From 947ec32efe5d33ed908855c94075e83986e85b49 Mon Sep 17 00:00:00 2001 From: "bernard.xiong@gmail.com" Date: Sat, 8 Oct 2011 13:25:21 +0000 Subject: [PATCH] fixed statfs issue in elmfs porting git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1744 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- components/dfs/filesystems/elmfat/dfs_elm.c | 1557 ++-- components/dfs/filesystems/elmfat/ff.c | 8004 +++++++++---------- 2 files changed, 4790 insertions(+), 4771 deletions(-) diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c index 603399c203..0489a0a814 100644 --- a/components/dfs/filesystems/elmfat/dfs_elm.c +++ b/components/dfs/filesystems/elmfat/dfs_elm.c @@ -1,769 +1,788 @@ -#include -#include "ffconf.h" -#include "ff.h" - -/* ELM FatFs provide a DIR struct */ -#define HAVE_DIR_STRUCTURE - -#include -#include - -static rt_device_t disk[_VOLUMES] = {0}; - -static int elm_result_to_dfs(FRESULT result) -{ - int status = DFS_STATUS_OK; - - switch (result) - { - case FR_OK: - break; - - case FR_NO_FILE: - case FR_NO_PATH: - case FR_NO_FILESYSTEM: - status = -DFS_STATUS_ENOENT; - break; - - case FR_INVALID_NAME: - status = -DFS_STATUS_EINVAL; - break; - - case FR_EXIST: - case FR_INVALID_OBJECT: - status = -DFS_STATUS_EEXIST; - break; - - case FR_DISK_ERR: - case FR_NOT_READY: - case FR_INT_ERR: - status = -DFS_STATUS_EIO; - break; - - case FR_WRITE_PROTECTED: - case FR_DENIED: - status = -DFS_STATUS_EROFS; - break; - - case FR_MKFS_ABORTED: - status = -DFS_STATUS_EINVAL; - break; - - default: - status = -1; - break; - } - - return status; -} - -int dfs_elm_mount(struct dfs_filesystem* fs, unsigned long rwflag, const void* data) -{ - FATFS *fat; - FRESULT result; - rt_uint32_t index; - - /* handle RT-Thread device routine */ - for (index = 0; index < _VOLUMES; index ++) - { - if (disk[index] == RT_NULL) - { - break; - } - } - if (index == _VOLUMES) return -DFS_STATUS_ENOSPC; - - /* get device */ - disk[index] = fs->dev_id; - - fat = (FATFS *) rt_malloc(sizeof(FATFS)); - if (fat == RT_NULL) - { - return -1; - } - - /* mount fatfs, always 0 logic driver */ - result = f_mount(index, fat); - if (result == FR_OK) - fs->data = fat; - else - { - rt_free(fat); - return elm_result_to_dfs(result); - } - - return 0; -} - -int dfs_elm_unmount(struct dfs_filesystem* fs) -{ - FATFS *fat; - FRESULT result; - rt_uint32_t index; - - fat = (FATFS*) fs->data; - - RT_ASSERT(fat != RT_NULL); - - /* find the device index and then umount it */ - for (index = 0; index < _VOLUMES; index ++) - { - if (disk[index] == fs->dev_id) - { - result = f_mount(index, RT_NULL); - - if (result == FR_OK) - { - fs->data = RT_NULL; - disk[index] = RT_NULL; - rt_free(fat); - return DFS_STATUS_OK; - } - } - } - - return -DFS_STATUS_ENOENT; -} - -int dfs_elm_mkfs(const char* device_name) -{ - BYTE drv; - rt_device_t dev; - FRESULT result; - - /* find device name */ - for (drv = 0; drv < _VOLUMES; drv ++) - { - dev = disk[drv]; - if (rt_strncmp(dev->parent.name, device_name, RT_NAME_MAX) == 0) - { - /* 1: no partition table */ - /* 0: auto selection of cluster size */ - result = f_mkfs(drv, 1, 0); - if ( result != FR_OK) - { - rt_kprintf("format error\n"); - return elm_result_to_dfs(result); - } - - return DFS_STATUS_OK; - } - } - - /* can't find device driver */ - rt_kprintf("can not find device driver: %s\n", device_name); - return -DFS_STATUS_EIO; -} - -int dfs_elm_statfs(struct dfs_filesystem* fs, struct statfs *buf) -{ - FATFS *f; - FRESULT res; - char driver[4]; - DWORD fre_clust, fre_sect, tot_sect; - - RT_ASSERT(fs != RT_NULL); - RT_ASSERT(buf != RT_NULL); - - f = (FATFS*) fs->data; - - rt_snprintf(driver, sizeof(driver), "%d:", f->drv); - res = f_getfree(driver, &fre_clust, &f); - if (res) return elm_result_to_dfs(res); - - /* Get total sectors and free sectors */ - tot_sect = (f->n_fatent - 2) * f->csize; - fre_sect = fre_clust * f->csize; - - buf->f_bfree = fre_sect; - buf->f_blocks = tot_sect; - buf->f_bsize = 512; - - return 0; -} - -int dfs_elm_open(struct dfs_fd* file) -{ - FIL* fd; - BYTE mode; - FRESULT result; - char *drivers_fn; - -#if (_VOLUMES > 1) - int vol; - extern int elm_get_vol(FATFS *fat); - - /* add path for ELM FatFS driver support */ - vol = elm_get_vol((FATFS *)file->fs->data); - if (vol < 0) return -DFS_STATUS_ENOENT; - drivers_fn = rt_malloc(256); - if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; - - rt_snprintf(drivers_fn, 256, "%d:%s", vol, file->path); -#else - drivers_fn = file->path; -#endif - - if (file->flags & DFS_O_DIRECTORY) - { - DIR *dir; - - if (file->flags & DFS_O_CREAT) - { - result = f_mkdir(drivers_fn); - if (result != FR_OK) - { -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - return elm_result_to_dfs(result); - } - } - - /* open directory */ - dir = (DIR *)rt_malloc(sizeof(DIR)); - if (dir == RT_NULL) - { -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - return -DFS_STATUS_ENOMEM; - } - - result = f_opendir(dir, drivers_fn); -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - if (result != FR_OK) - { - rt_free(dir); - return elm_result_to_dfs(result); - } - - file->data = dir; - return DFS_STATUS_OK; - } - else - { - mode = FA_READ; - - if (file->flags & DFS_O_WRONLY) mode |= FA_WRITE; - if ((file->flags & DFS_O_ACCMODE) & DFS_O_RDWR) mode |= FA_WRITE; - /* Opens the file, if it is existing. If not, a new file is created. */ - if (file->flags & DFS_O_CREAT) mode |= FA_OPEN_ALWAYS; - /* Creates a new file. If the file is existing, it is truncated and overwritten. */ - if (file->flags & DFS_O_TRUNC) mode |= FA_CREATE_ALWAYS; - /* Creates a new file. The function fails if the file is already existing. */ - if (file->flags & DFS_O_EXCL) mode |= FA_CREATE_NEW; - - /* allocate a fd */ - fd = (FIL*)rt_malloc(sizeof(FIL)); - if (fd == RT_NULL) - { - return -DFS_STATUS_ENOMEM; - } - - result = f_open(fd, drivers_fn, mode); -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - if (result == FR_OK) - { - file->pos = fd->fptr; - file->size = fd->fsize; - file->data = fd; - - if (file->flags & DFS_O_APPEND) - { - file->pos = f_lseek(fd, fd->fsize); - } - } - else - { - /* open failed, return */ - rt_free(fd); - return elm_result_to_dfs(result); - } - } - - return DFS_STATUS_OK; -} - -int dfs_elm_close(struct dfs_fd* file) -{ - FRESULT result; - - result = FR_OK; - if (file->type == FT_DIRECTORY) - { - DIR* dir; - - dir = (DIR*)(file->data); - RT_ASSERT(dir != RT_NULL); - - /* release memory */ - rt_free(dir); - } - else if (file->type == FT_REGULAR) - { - FIL* fd; - fd = (FIL*)(file->data); - RT_ASSERT(fd != RT_NULL); - - result = f_close(fd); - if (result == FR_OK) - { - /* release memory */ - rt_free(fd); - } - } - - return elm_result_to_dfs(result); -} - -int dfs_elm_ioctl(struct dfs_fd* file, int cmd, void* args) -{ - return -DFS_STATUS_ENOSYS; -} - -int dfs_elm_read(struct dfs_fd* file, void* buf, rt_size_t len) -{ - FIL* fd; - FRESULT result; - UINT byte_read; - - if (file->type == FT_DIRECTORY) - { - return -DFS_STATUS_EISDIR; - } - - fd = (FIL*)(file->data); - RT_ASSERT(fd != RT_NULL); - - result = f_read(fd, buf, len, &byte_read); - /* update position */ - file->pos = fd->fptr; - if (result == FR_OK) return byte_read; - - return elm_result_to_dfs(result); -} - -int dfs_elm_write(struct dfs_fd* file, const void* buf, rt_size_t len) -{ - FIL* fd; - FRESULT result; - UINT byte_write; - - if (file->type == FT_DIRECTORY) - { - return -DFS_STATUS_EISDIR; - } - - fd = (FIL*)(file->data); - RT_ASSERT(fd != RT_NULL); - - result = f_write(fd, buf, len, &byte_write); - /* update position and file size */ - file->pos = fd->fptr; - file->size = fd->fsize; - if (result == FR_OK) return byte_write; - - return elm_result_to_dfs(result); -} - -int dfs_elm_flush(struct dfs_fd* file) -{ - FIL* fd; - FRESULT result; - - fd = (FIL*)(file->data); - RT_ASSERT(fd != RT_NULL); - - result = f_sync(fd); - return elm_result_to_dfs(result); -} - -int dfs_elm_lseek(struct dfs_fd* file, rt_off_t offset) -{ - FRESULT result; - if (file->type == FT_REGULAR) - { - FIL* fd; - - /* regular file type */ - fd = (FIL*)(file->data); - RT_ASSERT(fd != RT_NULL); - - result = f_lseek(fd, offset); - if (result == FR_OK) - { - /* return current position */ - return fd->fptr; - } - } - else if (file->type == FT_DIRECTORY) - { - /* which is a directory */ - DIR* dir; - - dir = (DIR*)(file->data); - RT_ASSERT(dir != RT_NULL); - - result = f_seekdir(dir, offset / sizeof(struct dirent)); - if (result == FR_OK) - { - /* update file position */ - file->pos = offset; - return file->pos; - } - } - - return elm_result_to_dfs(result); -} - -int dfs_elm_getdents(struct dfs_fd* file, struct dirent* dirp, rt_uint32_t count) -{ - DIR* dir; - FILINFO fno; - FRESULT result; - rt_uint32_t index; - struct dirent* d; - - dir = (DIR*)(file->data); - RT_ASSERT(dir != RT_NULL); - - /* make integer count */ - count = (count / sizeof(struct dirent)) * sizeof(struct dirent); - if ( count == 0 ) return -DFS_STATUS_EINVAL; - -#if _USE_LFN - /* allocate long file name */ - fno.lfname = rt_malloc(256); - fno.lfsize = 256; -#endif - - index = 0; - while (1) - { - char *fn; - - d = dirp + index; - - result = f_readdir(dir, &fno); - if (result != FR_OK || fno.fname[0] == 0) break; - -#if _USE_LFN - fn = *fno.lfname? fno.lfname : fno.fname; -#else - fn = fno.fname; -#endif - - d->d_type = DFS_DT_UNKNOWN; - if (fno.fattrib & AM_DIR) d->d_type = DFS_DT_DIR; - else d->d_type = DFS_DT_REG; - - d->d_namlen = rt_strlen(fn); - d->d_reclen = (rt_uint16_t)sizeof(struct dirent); - rt_strncpy(d->d_name, fn, rt_strlen(fn) + 1); - - index ++; - if ( index * sizeof(struct dirent) >= count ) - break; - } - -#if _USE_LFN - rt_free(fno.lfname); -#endif - - if (index == 0) - return elm_result_to_dfs(result); - - file->pos += index * sizeof(struct dirent); - - return index * sizeof(struct dirent); -} - -int dfs_elm_unlink(struct dfs_filesystem* fs, const char* path) -{ - FRESULT result; - -#if _VOLUMES > 1 - int vol; - char *drivers_fn; - extern int elm_get_vol(FATFS *fat); - - /* add path for ELM FatFS driver support */ - vol = elm_get_vol((FATFS *)fs->data); - if (vol < 0) return -DFS_STATUS_ENOENT; - drivers_fn = rt_malloc(256); - if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; - - rt_snprintf(drivers_fn, 256, "%d:%s", vol, path); -#else - const char *drivers_fn; - drivers_fn = path; -#endif - - result = f_unlink(drivers_fn); -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - return elm_result_to_dfs(result); -} - -int dfs_elm_rename(struct dfs_filesystem* fs, const char* oldpath, const char* newpath) -{ - FRESULT result; - -#if _VOLUMES > 1 - char *drivers_oldfn, *drivers_newfn; - int vol; - extern int elm_get_vol(FATFS *fat); - - /* add path for ELM FatFS driver support */ - vol = elm_get_vol((FATFS *)fs->data); - if (vol < 0) return -DFS_STATUS_ENOENT; - - drivers_oldfn = rt_malloc(256); - if (drivers_oldfn == RT_NULL) return -DFS_STATUS_ENOMEM; - drivers_newfn = rt_malloc(256); - if (drivers_newfn == RT_NULL) - { - rt_free(drivers_oldfn); - return -DFS_STATUS_ENOMEM; - } - - rt_snprintf(drivers_oldfn, 256, "%d:%s", vol, oldpath); - rt_snprintf(drivers_newfn, 256, "%d:%s", vol, newpath); -#else - const char *drivers_oldfn, *drivers_newfn; - - drivers_oldfn = oldpath; - drivers_newfn = newpath; -#endif - - result = f_rename(drivers_oldfn, drivers_newfn); -#if _VOLUMES > 1 - rt_free(drivers_oldfn); - rt_free(drivers_newfn); -#endif - return elm_result_to_dfs(result); -} - -int dfs_elm_stat(struct dfs_filesystem* fs, const char *path, struct stat *st) -{ - FILINFO file_info; - FRESULT result; - - -#if _VOLUMES > 1 - int vol; - char *drivers_fn; - extern int elm_get_vol(FATFS *fat); - - /* add path for ELM FatFS driver support */ - vol = elm_get_vol((FATFS *)fs->data); - if (vol < 0) return -DFS_STATUS_ENOENT; - drivers_fn = rt_malloc(256); - if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; - - rt_snprintf(drivers_fn, 256, "%d:%s", vol, path); -#else - const char *drivers_fn; - drivers_fn = path; -#endif - -#if _USE_LFN - /* allocate long file name */ - file_info.lfname = rt_malloc(256); - file_info.lfsize = 256; -#endif - - result = f_stat(drivers_fn, &file_info); -#if _VOLUMES > 1 - rt_free(drivers_fn); -#endif - if (result == FR_OK) - { - /* convert to dfs stat structure */ - st->st_dev = 0; - - st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH | - DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH; - if (file_info.fattrib & AM_DIR) - { - st->st_mode &= ~DFS_S_IFREG; - st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH; - } - if (file_info.fattrib & AM_RDO) - st->st_mode &= ~(DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH); - - st->st_size = file_info.fsize; - st->st_mtime = file_info.ftime; - st->st_blksize = 512; - } - -#if _USE_LFN - rt_free(file_info.lfname); -#endif - - return elm_result_to_dfs(result); -} - -static const struct dfs_filesystem_operation dfs_elm = -{ - "elm", - dfs_elm_mount, - dfs_elm_unmount, - dfs_elm_mkfs, - dfs_elm_statfs, - - dfs_elm_open, - dfs_elm_close, - dfs_elm_ioctl, - dfs_elm_read, - dfs_elm_write, - dfs_elm_flush, - dfs_elm_lseek, - dfs_elm_getdents, - dfs_elm_unlink, - dfs_elm_stat, - dfs_elm_rename, -}; - -int elm_init(void) -{ - /* register fatfs file system */ - dfs_register(&dfs_elm); - - return 0; -} - -/* - * RT-Thread Device Interface for ELM FatFs - */ -#include "diskio.h" - -/* Inidialize a Drive */ -DSTATUS disk_initialize (BYTE drv) -{ - return 0; -} - -/* Return Disk Status */ -DSTATUS disk_status (BYTE drv) -{ - return 0; -} - -/* Read Sector(s) */ -DRESULT disk_read (BYTE drv, BYTE *buff, DWORD sector, BYTE count) -{ - rt_size_t result; - rt_device_t device = disk[drv]; - - result = rt_device_read(device, sector, buff, count); - if (result == count) - { - return RES_OK; - } - - return RES_ERROR; -} - -/* Write Sector(s) */ -DRESULT disk_write (BYTE drv, const BYTE *buff, DWORD sector, BYTE count) -{ - rt_size_t result; - rt_device_t device = disk[drv]; - - result = rt_device_write(device, sector, buff, count); - if (result == count) - { - return RES_OK; - } - - return RES_ERROR; -} - -/* Miscellaneous Functions */ -DRESULT disk_ioctl (BYTE drv, BYTE ctrl, void *buff) -{ - rt_device_t device = disk[drv]; - - if (device == RT_NULL) return RES_ERROR; - - if (ctrl == GET_SECTOR_COUNT) - { - struct rt_device_blk_geometry geometry; - - rt_memset(&geometry, 0, sizeof(geometry)); - rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); - - *(DWORD*)buff = geometry.sector_count; - if (geometry.sector_count == 0) return RES_ERROR; - } - else if (ctrl == GET_SECTOR_SIZE) - { - struct rt_device_blk_geometry geometry; - - rt_memset(&geometry, 0, sizeof(geometry)); - rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); - - *(WORD*)buff = geometry.bytes_per_sector; - } - else if (ctrl == GET_BLOCK_SIZE) /* Get erase block size in unit of sectors (DWORD) */ - { - struct rt_device_blk_geometry geometry; - - rt_memset(&geometry, 0, sizeof(geometry)); - rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); - - *(DWORD*)buff = geometry.block_size/geometry.bytes_per_sector; - } - - return RES_OK; -} - -rt_time_t get_fattime() -{ - return 0; -} - -#if _FS_REENTRANT -int ff_cre_syncobj(BYTE drv, _SYNC_t* m) -{ - char name[8]; - rt_mutex_t mutex; - - rt_snprintf(name, sizeof(name), "fat%d", drv); - mutex = rt_mutex_create(name, RT_IPC_FLAG_FIFO); - if (mutex != RT_NULL) - { - *m = mutex; - return RT_TRUE; - } - - return RT_FALSE; -} - -int ff_del_syncobj(_SYNC_t m) -{ - rt_mutex_delete(m); - - return RT_TRUE; -} - -int ff_req_grant(_SYNC_t m) -{ - if (rt_mutex_take(m, _FS_TIMEOUT) == RT_EOK) return RT_TRUE; - - return RT_FALSE; -} - -void ff_rel_grant(_SYNC_t m) -{ - rt_mutex_release(m); -} - -#endif +/* + * File : dfs_elm.c + * This file is part of Device File System in RT-Thread RTOS + * COPYRIGHT (C) 2008-2011, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE. + * + * Change Logs: + * Date Author Notes + * 2008-02-22 QiuYi The first version. + * 2011-10-08 Bernard fixed the block size in statfs. + */ + +#include +#include "ffconf.h" +#include "ff.h" + +/* ELM FatFs provide a DIR struct */ +#define HAVE_DIR_STRUCTURE + +#include +#include + +static rt_device_t disk[_VOLUMES] = {0}; + +static int elm_result_to_dfs(FRESULT result) +{ + int status = DFS_STATUS_OK; + + switch (result) + { + case FR_OK: + break; + + case FR_NO_FILE: + case FR_NO_PATH: + case FR_NO_FILESYSTEM: + status = -DFS_STATUS_ENOENT; + break; + + case FR_INVALID_NAME: + status = -DFS_STATUS_EINVAL; + break; + + case FR_EXIST: + case FR_INVALID_OBJECT: + status = -DFS_STATUS_EEXIST; + break; + + case FR_DISK_ERR: + case FR_NOT_READY: + case FR_INT_ERR: + status = -DFS_STATUS_EIO; + break; + + case FR_WRITE_PROTECTED: + case FR_DENIED: + status = -DFS_STATUS_EROFS; + break; + + case FR_MKFS_ABORTED: + status = -DFS_STATUS_EINVAL; + break; + + default: + status = -1; + break; + } + + return status; +} + +int dfs_elm_mount(struct dfs_filesystem* fs, unsigned long rwflag, const void* data) +{ + FATFS *fat; + FRESULT result; + rt_uint32_t index; + + /* handle RT-Thread device routine */ + for (index = 0; index < _VOLUMES; index ++) + { + if (disk[index] == RT_NULL) + { + break; + } + } + if (index == _VOLUMES) return -DFS_STATUS_ENOSPC; + + /* get device */ + disk[index] = fs->dev_id; + + fat = (FATFS *) rt_malloc(sizeof(FATFS)); + if (fat == RT_NULL) + { + return -1; + } + + /* mount fatfs, always 0 logic driver */ + result = f_mount(index, fat); + if (result == FR_OK) + fs->data = fat; + else + { + rt_free(fat); + return elm_result_to_dfs(result); + } + + return 0; +} + +int dfs_elm_unmount(struct dfs_filesystem* fs) +{ + FATFS *fat; + FRESULT result; + rt_uint32_t index; + + fat = (FATFS*) fs->data; + + RT_ASSERT(fat != RT_NULL); + + /* find the device index and then umount it */ + for (index = 0; index < _VOLUMES; index ++) + { + if (disk[index] == fs->dev_id) + { + result = f_mount(index, RT_NULL); + + if (result == FR_OK) + { + fs->data = RT_NULL; + disk[index] = RT_NULL; + rt_free(fat); + return DFS_STATUS_OK; + } + } + } + + return -DFS_STATUS_ENOENT; +} + +int dfs_elm_mkfs(const char* device_name) +{ + BYTE drv; + rt_device_t dev; + FRESULT result; + + /* find device name */ + for (drv = 0; drv < _VOLUMES; drv ++) + { + dev = disk[drv]; + if (rt_strncmp(dev->parent.name, device_name, RT_NAME_MAX) == 0) + { + /* 1: no partition table */ + /* 0: auto selection of cluster size */ + result = f_mkfs(drv, 1, 0); + if ( result != FR_OK) + { + rt_kprintf("format error\n"); + return elm_result_to_dfs(result); + } + + return DFS_STATUS_OK; + } + } + + /* can't find device driver */ + rt_kprintf("can not find device driver: %s\n", device_name); + return -DFS_STATUS_EIO; +} + +int dfs_elm_statfs(struct dfs_filesystem* fs, struct statfs *buf) +{ + FATFS *f; + FRESULT res; + char driver[4]; + DWORD fre_clust, fre_sect, tot_sect; + + RT_ASSERT(fs != RT_NULL); + RT_ASSERT(buf != RT_NULL); + + f = (FATFS*) fs->data; + + rt_snprintf(driver, sizeof(driver), "%d:", f->drv); + res = f_getfree(driver, &fre_clust, &f); + if (res) return elm_result_to_dfs(res); + + /* Get total sectors and free sectors */ + tot_sect = (f->n_fatent - 2) * f->csize; + fre_sect = fre_clust * f->csize; + + buf->f_bfree = fre_sect; + buf->f_blocks = tot_sect; +#if _MAX_SS != 512 + buf->f_bsize = f->ssize; +#else + buf->f_bsize = 512; +#endif + + return 0; +} + +int dfs_elm_open(struct dfs_fd* file) +{ + FIL* fd; + BYTE mode; + FRESULT result; + char *drivers_fn; + +#if (_VOLUMES > 1) + int vol; + extern int elm_get_vol(FATFS *fat); + + /* add path for ELM FatFS driver support */ + vol = elm_get_vol((FATFS *)file->fs->data); + if (vol < 0) return -DFS_STATUS_ENOENT; + drivers_fn = rt_malloc(256); + if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; + + rt_snprintf(drivers_fn, 256, "%d:%s", vol, file->path); +#else + drivers_fn = file->path; +#endif + + if (file->flags & DFS_O_DIRECTORY) + { + DIR *dir; + + if (file->flags & DFS_O_CREAT) + { + result = f_mkdir(drivers_fn); + if (result != FR_OK) + { +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + return elm_result_to_dfs(result); + } + } + + /* open directory */ + dir = (DIR *)rt_malloc(sizeof(DIR)); + if (dir == RT_NULL) + { +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + return -DFS_STATUS_ENOMEM; + } + + result = f_opendir(dir, drivers_fn); +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + if (result != FR_OK) + { + rt_free(dir); + return elm_result_to_dfs(result); + } + + file->data = dir; + return DFS_STATUS_OK; + } + else + { + mode = FA_READ; + + if (file->flags & DFS_O_WRONLY) mode |= FA_WRITE; + if ((file->flags & DFS_O_ACCMODE) & DFS_O_RDWR) mode |= FA_WRITE; + /* Opens the file, if it is existing. If not, a new file is created. */ + if (file->flags & DFS_O_CREAT) mode |= FA_OPEN_ALWAYS; + /* Creates a new file. If the file is existing, it is truncated and overwritten. */ + if (file->flags & DFS_O_TRUNC) mode |= FA_CREATE_ALWAYS; + /* Creates a new file. The function fails if the file is already existing. */ + if (file->flags & DFS_O_EXCL) mode |= FA_CREATE_NEW; + + /* allocate a fd */ + fd = (FIL*)rt_malloc(sizeof(FIL)); + if (fd == RT_NULL) + { + return -DFS_STATUS_ENOMEM; + } + + result = f_open(fd, drivers_fn, mode); +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + if (result == FR_OK) + { + file->pos = fd->fptr; + file->size = fd->fsize; + file->data = fd; + + if (file->flags & DFS_O_APPEND) + { + file->pos = f_lseek(fd, fd->fsize); + } + } + else + { + /* open failed, return */ + rt_free(fd); + return elm_result_to_dfs(result); + } + } + + return DFS_STATUS_OK; +} + +int dfs_elm_close(struct dfs_fd* file) +{ + FRESULT result; + + result = FR_OK; + if (file->type == FT_DIRECTORY) + { + DIR* dir; + + dir = (DIR*)(file->data); + RT_ASSERT(dir != RT_NULL); + + /* release memory */ + rt_free(dir); + } + else if (file->type == FT_REGULAR) + { + FIL* fd; + fd = (FIL*)(file->data); + RT_ASSERT(fd != RT_NULL); + + result = f_close(fd); + if (result == FR_OK) + { + /* release memory */ + rt_free(fd); + } + } + + return elm_result_to_dfs(result); +} + +int dfs_elm_ioctl(struct dfs_fd* file, int cmd, void* args) +{ + return -DFS_STATUS_ENOSYS; +} + +int dfs_elm_read(struct dfs_fd* file, void* buf, rt_size_t len) +{ + FIL* fd; + FRESULT result; + UINT byte_read; + + if (file->type == FT_DIRECTORY) + { + return -DFS_STATUS_EISDIR; + } + + fd = (FIL*)(file->data); + RT_ASSERT(fd != RT_NULL); + + result = f_read(fd, buf, len, &byte_read); + /* update position */ + file->pos = fd->fptr; + if (result == FR_OK) return byte_read; + + return elm_result_to_dfs(result); +} + +int dfs_elm_write(struct dfs_fd* file, const void* buf, rt_size_t len) +{ + FIL* fd; + FRESULT result; + UINT byte_write; + + if (file->type == FT_DIRECTORY) + { + return -DFS_STATUS_EISDIR; + } + + fd = (FIL*)(file->data); + RT_ASSERT(fd != RT_NULL); + + result = f_write(fd, buf, len, &byte_write); + /* update position and file size */ + file->pos = fd->fptr; + file->size = fd->fsize; + if (result == FR_OK) return byte_write; + + return elm_result_to_dfs(result); +} + +int dfs_elm_flush(struct dfs_fd* file) +{ + FIL* fd; + FRESULT result; + + fd = (FIL*)(file->data); + RT_ASSERT(fd != RT_NULL); + + result = f_sync(fd); + return elm_result_to_dfs(result); +} + +int dfs_elm_lseek(struct dfs_fd* file, rt_off_t offset) +{ + FRESULT result; + if (file->type == FT_REGULAR) + { + FIL* fd; + + /* regular file type */ + fd = (FIL*)(file->data); + RT_ASSERT(fd != RT_NULL); + + result = f_lseek(fd, offset); + if (result == FR_OK) + { + /* return current position */ + return fd->fptr; + } + } + else if (file->type == FT_DIRECTORY) + { + /* which is a directory */ + DIR* dir; + + dir = (DIR*)(file->data); + RT_ASSERT(dir != RT_NULL); + + result = f_seekdir(dir, offset / sizeof(struct dirent)); + if (result == FR_OK) + { + /* update file position */ + file->pos = offset; + return file->pos; + } + } + + return elm_result_to_dfs(result); +} + +int dfs_elm_getdents(struct dfs_fd* file, struct dirent* dirp, rt_uint32_t count) +{ + DIR* dir; + FILINFO fno; + FRESULT result; + rt_uint32_t index; + struct dirent* d; + + dir = (DIR*)(file->data); + RT_ASSERT(dir != RT_NULL); + + /* make integer count */ + count = (count / sizeof(struct dirent)) * sizeof(struct dirent); + if ( count == 0 ) return -DFS_STATUS_EINVAL; + +#if _USE_LFN + /* allocate long file name */ + fno.lfname = rt_malloc(256); + fno.lfsize = 256; +#endif + + index = 0; + while (1) + { + char *fn; + + d = dirp + index; + + result = f_readdir(dir, &fno); + if (result != FR_OK || fno.fname[0] == 0) break; + +#if _USE_LFN + fn = *fno.lfname? fno.lfname : fno.fname; +#else + fn = fno.fname; +#endif + + d->d_type = DFS_DT_UNKNOWN; + if (fno.fattrib & AM_DIR) d->d_type = DFS_DT_DIR; + else d->d_type = DFS_DT_REG; + + d->d_namlen = rt_strlen(fn); + d->d_reclen = (rt_uint16_t)sizeof(struct dirent); + rt_strncpy(d->d_name, fn, rt_strlen(fn) + 1); + + index ++; + if ( index * sizeof(struct dirent) >= count ) + break; + } + +#if _USE_LFN + rt_free(fno.lfname); +#endif + + if (index == 0) + return elm_result_to_dfs(result); + + file->pos += index * sizeof(struct dirent); + + return index * sizeof(struct dirent); +} + +int dfs_elm_unlink(struct dfs_filesystem* fs, const char* path) +{ + FRESULT result; + +#if _VOLUMES > 1 + int vol; + char *drivers_fn; + extern int elm_get_vol(FATFS *fat); + + /* add path for ELM FatFS driver support */ + vol = elm_get_vol((FATFS *)fs->data); + if (vol < 0) return -DFS_STATUS_ENOENT; + drivers_fn = rt_malloc(256); + if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; + + rt_snprintf(drivers_fn, 256, "%d:%s", vol, path); +#else + const char *drivers_fn; + drivers_fn = path; +#endif + + result = f_unlink(drivers_fn); +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + return elm_result_to_dfs(result); +} + +int dfs_elm_rename(struct dfs_filesystem* fs, const char* oldpath, const char* newpath) +{ + FRESULT result; + +#if _VOLUMES > 1 + char *drivers_oldfn, *drivers_newfn; + int vol; + extern int elm_get_vol(FATFS *fat); + + /* add path for ELM FatFS driver support */ + vol = elm_get_vol((FATFS *)fs->data); + if (vol < 0) return -DFS_STATUS_ENOENT; + + drivers_oldfn = rt_malloc(256); + if (drivers_oldfn == RT_NULL) return -DFS_STATUS_ENOMEM; + drivers_newfn = rt_malloc(256); + if (drivers_newfn == RT_NULL) + { + rt_free(drivers_oldfn); + return -DFS_STATUS_ENOMEM; + } + + rt_snprintf(drivers_oldfn, 256, "%d:%s", vol, oldpath); + rt_snprintf(drivers_newfn, 256, "%d:%s", vol, newpath); +#else + const char *drivers_oldfn, *drivers_newfn; + + drivers_oldfn = oldpath; + drivers_newfn = newpath; +#endif + + result = f_rename(drivers_oldfn, drivers_newfn); +#if _VOLUMES > 1 + rt_free(drivers_oldfn); + rt_free(drivers_newfn); +#endif + return elm_result_to_dfs(result); +} + +int dfs_elm_stat(struct dfs_filesystem* fs, const char *path, struct stat *st) +{ + FILINFO file_info; + FRESULT result; + + +#if _VOLUMES > 1 + int vol; + char *drivers_fn; + extern int elm_get_vol(FATFS *fat); + + /* add path for ELM FatFS driver support */ + vol = elm_get_vol((FATFS *)fs->data); + if (vol < 0) return -DFS_STATUS_ENOENT; + drivers_fn = rt_malloc(256); + if (drivers_fn == RT_NULL) return -DFS_STATUS_ENOMEM; + + rt_snprintf(drivers_fn, 256, "%d:%s", vol, path); +#else + const char *drivers_fn; + drivers_fn = path; +#endif + +#if _USE_LFN + /* allocate long file name */ + file_info.lfname = rt_malloc(256); + file_info.lfsize = 256; +#endif + + result = f_stat(drivers_fn, &file_info); +#if _VOLUMES > 1 + rt_free(drivers_fn); +#endif + if (result == FR_OK) + { + /* convert to dfs stat structure */ + st->st_dev = 0; + + st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH | + DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH; + if (file_info.fattrib & AM_DIR) + { + st->st_mode &= ~DFS_S_IFREG; + st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH; + } + if (file_info.fattrib & AM_RDO) + st->st_mode &= ~(DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH); + + st->st_size = file_info.fsize; + st->st_mtime = file_info.ftime; + st->st_blksize = 512; + } + +#if _USE_LFN + rt_free(file_info.lfname); +#endif + + return elm_result_to_dfs(result); +} + +static const struct dfs_filesystem_operation dfs_elm = +{ + "elm", + dfs_elm_mount, + dfs_elm_unmount, + dfs_elm_mkfs, + dfs_elm_statfs, + + dfs_elm_open, + dfs_elm_close, + dfs_elm_ioctl, + dfs_elm_read, + dfs_elm_write, + dfs_elm_flush, + dfs_elm_lseek, + dfs_elm_getdents, + dfs_elm_unlink, + dfs_elm_stat, + dfs_elm_rename, +}; + +int elm_init(void) +{ + /* register fatfs file system */ + dfs_register(&dfs_elm); + + return 0; +} + +/* + * RT-Thread Device Interface for ELM FatFs + */ +#include "diskio.h" + +/* Inidialize a Drive */ +DSTATUS disk_initialize (BYTE drv) +{ + return 0; +} + +/* Return Disk Status */ +DSTATUS disk_status (BYTE drv) +{ + return 0; +} + +/* Read Sector(s) */ +DRESULT disk_read (BYTE drv, BYTE *buff, DWORD sector, BYTE count) +{ + rt_size_t result; + rt_device_t device = disk[drv]; + + result = rt_device_read(device, sector, buff, count); + if (result == count) + { + return RES_OK; + } + + return RES_ERROR; +} + +/* Write Sector(s) */ +DRESULT disk_write (BYTE drv, const BYTE *buff, DWORD sector, BYTE count) +{ + rt_size_t result; + rt_device_t device = disk[drv]; + + result = rt_device_write(device, sector, buff, count); + if (result == count) + { + return RES_OK; + } + + return RES_ERROR; +} + +/* Miscellaneous Functions */ +DRESULT disk_ioctl (BYTE drv, BYTE ctrl, void *buff) +{ + rt_device_t device = disk[drv]; + + if (device == RT_NULL) return RES_ERROR; + + if (ctrl == GET_SECTOR_COUNT) + { + struct rt_device_blk_geometry geometry; + + rt_memset(&geometry, 0, sizeof(geometry)); + rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); + + *(DWORD*)buff = geometry.sector_count; + if (geometry.sector_count == 0) return RES_ERROR; + } + else if (ctrl == GET_SECTOR_SIZE) + { + struct rt_device_blk_geometry geometry; + + rt_memset(&geometry, 0, sizeof(geometry)); + rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); + + *(WORD*)buff = geometry.bytes_per_sector; + } + else if (ctrl == GET_BLOCK_SIZE) /* Get erase block size in unit of sectors (DWORD) */ + { + struct rt_device_blk_geometry geometry; + + rt_memset(&geometry, 0, sizeof(geometry)); + rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry); + + *(DWORD*)buff = geometry.block_size/geometry.bytes_per_sector; + } + + return RES_OK; +} + +rt_time_t get_fattime() +{ + return 0; +} + +#if _FS_REENTRANT +int ff_cre_syncobj(BYTE drv, _SYNC_t* m) +{ + char name[8]; + rt_mutex_t mutex; + + rt_snprintf(name, sizeof(name), "fat%d", drv); + mutex = rt_mutex_create(name, RT_IPC_FLAG_FIFO); + if (mutex != RT_NULL) + { + *m = mutex; + return RT_TRUE; + } + + return RT_FALSE; +} + +int ff_del_syncobj(_SYNC_t m) +{ + rt_mutex_delete(m); + + return RT_TRUE; +} + +int ff_req_grant(_SYNC_t m) +{ + if (rt_mutex_take(m, _FS_TIMEOUT) == RT_EOK) return RT_TRUE; + + return RT_FALSE; +} + +void ff_rel_grant(_SYNC_t m) +{ + rt_mutex_release(m); +} + +#endif diff --git a/components/dfs/filesystems/elmfat/ff.c b/components/dfs/filesystems/elmfat/ff.c index fc759a38d7..1896bf2051 100644 --- a/components/dfs/filesystems/elmfat/ff.c +++ b/components/dfs/filesystems/elmfat/ff.c @@ -1,4002 +1,4002 @@ -/*----------------------------------------------------------------------------/ -/ FatFs - FAT file system module R0.08b (C)ChaN, 2011 -/-----------------------------------------------------------------------------/ -/ FatFs module is a generic FAT file system module for small embedded systems. -/ This is a free software that opened for education, research and commercial -/ developments under license policy of following terms. -/ -/ Copyright (C) 2011, ChaN, all right reserved. -/ -/ * The FatFs module is a free software and there is NO WARRANTY. -/ * No restriction on use. You can use, modify and redistribute it for -/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY. -/ * Redistributions of source code must retain the above copyright notice. -/ -/-----------------------------------------------------------------------------/ -/ Feb 26,'06 R0.00 Prototype. -/ -/ Apr 29,'06 R0.01 First stable version. -/ -/ Jun 01,'06 R0.02 Added FAT12 support. -/ Removed unbuffered mode. -/ Fixed a problem on small (<32M) partition. -/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). -/ -/ Sep 22,'06 R0.03 Added f_rename(). -/ Changed option _FS_MINIMUM to _FS_MINIMIZE. -/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast. -/ Fixed f_mkdir() creates incorrect directory on FAT32. -/ -/ Feb 04,'07 R0.04 Supported multiple drive system. -/ Changed some interfaces for multiple drive system. -/ Changed f_mountdrv() to f_mount(). -/ Added f_mkfs(). -/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive. -/ Added a capability of extending file size to f_lseek(). -/ Added minimization level 3. -/ Fixed an endian sensitive code in f_mkfs(). -/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. -/ Added FSInfo support. -/ Fixed DBCS name can result FR_INVALID_NAME. -/ Fixed short seek (<= csize) collapses the file object. -/ -/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). -/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo. -/ Fixed f_mkdir() on FAT32 creates incorrect directory. -/ Feb 03,'08 R0.05a Added f_truncate() and f_utime(). -/ Fixed off by one error at FAT sub-type determination. -/ Fixed btr in f_read() can be mistruncated. -/ Fixed cached sector is not flushed when create and close without write. -/ -/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). -/ Improved performance of f_lseek() on moving to the same or following cluster. -/ -/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY) -/ Added long file name feature. -/ Added multiple code page feature. -/ Added re-entrancy for multitask operation. -/ Added auto cluster size selection to f_mkfs(). -/ Added rewind option to f_readdir(). -/ Changed result code of critical errors. -/ Renamed string functions to avoid name collision. -/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg. -/ Added multiple sector size feature. -/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error. -/ Fixed wrong cache control in f_lseek(). -/ Added relative path feature. -/ Added f_chdir() and f_chdrive(). -/ Added proper case conversion to extended char. -/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h. -/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH. -/ Fixed name matching error on the 13 char boundary. -/ Added a configuration option, _LFN_UNICODE. -/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg. -/ -/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3) -/ Added file lock feature. (_FS_SHARE) -/ Added fast seek feature. (_USE_FASTSEEK) -/ Changed some types on the API, XCHAR->TCHAR. -/ Changed fname member in the FILINFO structure on Unicode cfg. -/ String functions support UTF-8 encoding files on Unicode cfg. -/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2) -/ Added sector erase feature. (_USE_ERASE) -/ Moved file lock semaphore table from fs object to the bss. -/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'. -/ Fixed f_mkfs() creates wrong FAT32 volume. -/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write(). -/ f_lseek() reports required table size on creating CLMP. -/ Extended format syntax of f_printf function. -/ Ignores duplicated directory separators in given path names. -/---------------------------------------------------------------------------*/ - -#include "ff.h" /* FatFs configurations and declarations */ -#include "diskio.h" /* Declarations of low level disk I/O functions */ - - -/*-------------------------------------------------------------------------- - - Module Private Definitions - ----------------------------------------------------------------------------*/ - -#if _FATFS != 8237 -#error Wrong include file (ff.h). -#endif - - -/* Definitions on sector size */ -#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096 -#error Wrong sector size. -#endif -#if _MAX_SS != 512 -#define SS(fs) ((fs)->ssize) /* Multiple sector size */ -#else -#define SS(fs) 512U /* Fixed sector size */ -#endif - - -/* Reentrancy related */ -#if _FS_REENTRANT -#if _USE_LFN == 1 -#error Static LFN work area must not be used in re-entrant configuration. -#endif -#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; } -#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; } -#else -#define ENTER_FF(fs) -#define LEAVE_FF(fs, res) return res -#endif - -#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); } - - -/* File shareing feature */ -#if _FS_SHARE -#if _FS_READONLY -#error _FS_SHARE must be 0 on read-only cfg. -#endif -typedef struct { - FATFS *fs; /* File ID 1, volume (NULL:blank entry) */ - DWORD clu; /* File ID 2, directory */ - WORD idx; /* File ID 3, directory index */ - WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */ -} FILESEM; -#endif - - -/* Misc definitions */ -#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO)) -#define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);} - - -/* DBCS code ranges and SBCS extend char conversion table */ - -#if _CODE_PAGE == 932 /* Japanese Shift-JIS */ -#define _DF1S 0x81 /* DBC 1st byte range 1 start */ -#define _DF1E 0x9F /* DBC 1st byte range 1 end */ -#define _DF2S 0xE0 /* DBC 1st byte range 2 start */ -#define _DF2E 0xFC /* DBC 1st byte range 2 end */ -#define _DS1S 0x40 /* DBC 2nd byte range 1 start */ -#define _DS1E 0x7E /* DBC 2nd byte range 1 end */ -#define _DS2S 0x80 /* DBC 2nd byte range 2 start */ -#define _DS2E 0xFC /* DBC 2nd byte range 2 end */ - -#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ -#define _DF1S 0x81 -#define _DF1E 0xFE -#define _DS1S 0x40 -#define _DS1E 0x7E -#define _DS2S 0x80 -#define _DS2E 0xFE - -#elif _CODE_PAGE == 949 /* Korean */ -#define _DF1S 0x81 -#define _DF1E 0xFE -#define _DS1S 0x41 -#define _DS1E 0x5A -#define _DS2S 0x61 -#define _DS2E 0x7A -#define _DS3S 0x81 -#define _DS3E 0xFE - -#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ -#define _DF1S 0x81 -#define _DF1E 0xFE -#define _DS1S 0x40 -#define _DS1E 0x7E -#define _DS2S 0xA1 -#define _DS2E 0xFE - -#elif _CODE_PAGE == 437 /* U.S. (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 720 /* Arabic (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 737 /* Greek (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \ - 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 775 /* Baltic (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ - 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \ - 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF} - -#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \ - 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \ - 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 857 /* Turkish (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \ - 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ - 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 862 /* Hebrew (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 866 /* Russian (OEM) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} - -#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ - 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF} - -#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \ - 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} - -#elif _CODE_PAGE == 1253 /* Greek (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \ - 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF} - -#elif _CODE_PAGE == 1254 /* Turkish (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \ - 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} - -#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 1256 /* Arabic (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF} - -#elif _CODE_PAGE == 1257 /* Baltic (Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} - -#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */ -#define _DF1S 0 -#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \ - 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F} - -#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */ -#if _USE_LFN -#error Cannot use LFN feature without valid code page. -#endif -#define _DF1S 0 - -#else -#error Unknown code page - -#endif - - -/* Character code support macros */ -#define IsUpper(c) (((c)>='A')&&((c)<='Z')) -#define IsLower(c) (((c)>='a')&&((c)<='z')) -#define IsDigit(c) (((c)>='0')&&((c)<='9')) - -#if _DF1S /* Code page is DBCS */ - -#ifdef _DF2S /* Two 1st byte areas */ -#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E)) -#else /* One 1st byte area */ -#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) -#endif - -#ifdef _DS3S /* Three 2nd byte areas */ -#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E)) -#else /* Two 2nd byte areas */ -#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E)) -#endif - -#else /* Code page is SBCS */ - -#define IsDBCS1(c) 0 -#define IsDBCS2(c) 0 - -#endif /* _DF1S */ - - -/* Name status flags */ -#define NS 11 /* Index of name status byte in fn[] */ -#define NS_LOSS 0x01 /* Out of 8.3 format */ -#define NS_LFN 0x02 /* Force to create LFN entry */ -#define NS_LAST 0x04 /* Last segment */ -#define NS_BODY 0x08 /* Lower case flag (body) */ -#define NS_EXT 0x10 /* Lower case flag (ext) */ -#define NS_DOT 0x20 /* Dot entry */ - - -/* FAT sub-type boundaries */ -/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */ -#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */ -#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */ - - -/* FatFs refers the members in the FAT structures as byte array instead of -/ structure member because the structure is not binary compatible between -/ different platforms */ - -#define BS_jmpBoot 0 /* Jump instruction (3) */ -#define BS_OEMName 3 /* OEM name (8) */ -#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */ -#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */ -#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */ -#define BPB_NumFATs 16 /* Number of FAT copies (1) */ -#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */ -#define BPB_TotSec16 19 /* Volume size [sector] (2) */ -#define BPB_Media 21 /* Media descriptor (1) */ -#define BPB_FATSz16 22 /* FAT size [sector] (2) */ -#define BPB_SecPerTrk 24 /* Track size [sector] (2) */ -#define BPB_NumHeads 26 /* Number of heads (2) */ -#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */ -#define BPB_TotSec32 32 /* Volume size [sector] (4) */ -#define BS_DrvNum 36 /* Physical drive number (2) */ -#define BS_BootSig 38 /* Extended boot signature (1) */ -#define BS_VolID 39 /* Volume serial number (4) */ -#define BS_VolLab 43 /* Volume label (8) */ -#define BS_FilSysType 54 /* File system type (1) */ -#define BPB_FATSz32 36 /* FAT size [sector] (4) */ -#define BPB_ExtFlags 40 /* Extended flags (2) */ -#define BPB_FSVer 42 /* File system version (2) */ -#define BPB_RootClus 44 /* Root dir first cluster (4) */ -#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */ -#define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */ -#define BS_DrvNum32 64 /* Physical drive number (2) */ -#define BS_BootSig32 66 /* Extended boot signature (1) */ -#define BS_VolID32 67 /* Volume serial number (4) */ -#define BS_VolLab32 71 /* Volume label (8) */ -#define BS_FilSysType32 82 /* File system type (1) */ -#define FSI_LeadSig 0 /* FSI: Leading signature (4) */ -#define FSI_StrucSig 484 /* FSI: Structure signature (4) */ -#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */ -#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */ -#define MBR_Table 446 /* MBR: Partition table offset (2) */ -#define SZ_PTE 16 /* MBR: Size of a partition table entry */ -#define BS_55AA 510 /* Boot sector signature (2) */ - -#define DIR_Name 0 /* Short file name (11) */ -#define DIR_Attr 11 /* Attribute (1) */ -#define DIR_NTres 12 /* NT flag (1) */ -#define DIR_CrtTime 14 /* Created time (2) */ -#define DIR_CrtDate 16 /* Created date (2) */ -#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */ -#define DIR_WrtTime 22 /* Modified time (2) */ -#define DIR_WrtDate 24 /* Modified date (2) */ -#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */ -#define DIR_FileSize 28 /* File size (4) */ -#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */ -#define LDIR_Attr 11 /* LFN attribute (1) */ -#define LDIR_Type 12 /* LFN type (1) */ -#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */ -#define LDIR_FstClusLO 26 /* Filled by zero (0) */ -#define SZ_DIR 32 /* Size of a directory entry */ -#define LLE 0x40 /* Last long entry flag in LDIR_Ord */ -#define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */ -#define NDDE 0x05 /* Replacement of a character collides with DDE */ - - -/*------------------------------------------------------------*/ -/* Work area */ - -#if _VOLUMES -static -FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */ -#else -#error Number of drives must not be 0. -#endif - -static -WORD Fsid; /* File system mount ID */ - -#if _FS_RPATH -static -BYTE CurrVol; /* Current drive */ -#endif - -#if _FS_SHARE -static -FILESEM Files[_FS_SHARE]; /* File lock semaphores */ -#endif - -#if _USE_LFN == 0 /* No LFN */ -#define DEF_NAMEBUF BYTE sfn[12] -#define INIT_BUF(dobj) (dobj).fn = sfn -#define FREE_BUF() - -#elif _USE_LFN == 1 /* LFN with static LFN working buffer */ -static WCHAR LfnBuf[_MAX_LFN+1]; -#define DEF_NAMEBUF BYTE sfn[12] -#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; } -#define FREE_BUF() - -#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */ -#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1] -#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; } -#define FREE_BUF() - -#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */ -#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn -#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \ - if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \ - (dobj).lfn = lfn; (dobj).fn = sfn; } -#define FREE_BUF() ff_memfree(lfn) - -#else -#error Wrong LFN configuration. -#endif - - - - -/*-------------------------------------------------------------------------- - - Module Private Functions - ----------------------------------------------------------------------------*/ - - -/*-----------------------------------------------------------------------*/ -/* String functions */ -/*-----------------------------------------------------------------------*/ - -/* Copy memory to memory */ -static -void mem_cpy (void* dst, const void* src, UINT cnt) { - BYTE *d = (BYTE*)dst; - const BYTE *s = (const BYTE*)src; - -#if _WORD_ACCESS == 1 - while (cnt >= sizeof(int)) { - *(int*)d = *(int*)s; - d += sizeof(int); s += sizeof(int); - cnt -= sizeof(int); - } -#endif - while (cnt--) - *d++ = *s++; -} - -/* Fill memory */ -static -void mem_set (void* dst, int val, UINT cnt) { - BYTE *d = (BYTE*)dst; - - while (cnt--) - *d++ = (BYTE)val; -} - -/* Compare memory to memory */ -static -int mem_cmp (const void* dst, const void* src, UINT cnt) { - const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; - int r = 0; - - while (cnt-- && (r = *d++ - *s++) == 0) ; - return r; -} - -/* Check if chr is contained in the string */ -static -int chk_chr (const char* str, int chr) { - while (*str && *str != chr) str++; - return *str; -} - - - -/*-----------------------------------------------------------------------*/ -/* Request/Release grant to access the volume */ -/*-----------------------------------------------------------------------*/ -#if _FS_REENTRANT - -static -int lock_fs ( - FATFS *fs /* File system object */ -) -{ - return ff_req_grant(fs->sobj); -} - - -static -void unlock_fs ( - FATFS *fs, /* File system object */ - FRESULT res /* Result code to be returned */ -) -{ - if (res != FR_NOT_ENABLED && - res != FR_INVALID_DRIVE && - res != FR_INVALID_OBJECT && - res != FR_TIMEOUT) { - ff_rel_grant(fs->sobj); - } -} -#endif - - - -/*-----------------------------------------------------------------------*/ -/* File shareing control functions */ -/*-----------------------------------------------------------------------*/ -#if _FS_SHARE - -static -FRESULT chk_lock ( /* Check if the file can be accessed */ - DIR* dj, /* Directory object pointing the file to be checked */ - int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ -) -{ - UINT i, be; - - /* Search file semaphore table */ - for (i = be = 0; i < _FS_SHARE; i++) { - if (Files[i].fs) { /* Existing entry */ - if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */ - Files[i].clu == dj->sclust && - Files[i].idx == dj->index) break; - } else { /* Blank entry */ - be++; - } - } - if (i == _FS_SHARE) /* The file is not opened */ - return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */ - - /* The file has been opened. Reject any open against writing file and all write mode open */ - return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK; -} - - -static -int enq_lock ( /* Check if an entry is available for a new file */ - FATFS* fs /* File system object */ -) -{ - UINT i; - - for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; - return (i == _FS_SHARE) ? 0 : 1; -} - - -static -UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */ - DIR* dj, /* Directory object pointing the file to register or increment */ - int acc /* Desired access mode (0:Read, !0:Write) */ -) -{ - UINT i; - - - for (i = 0; i < _FS_SHARE; i++) { /* Find the file */ - if (Files[i].fs == dj->fs && - Files[i].clu == dj->sclust && - Files[i].idx == dj->index) break; - } - - if (i == _FS_SHARE) { /* Not opened. Register it as new. */ - for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; - if (i == _FS_SHARE) return 0; /* No space to register (int err) */ - Files[i].fs = dj->fs; - Files[i].clu = dj->sclust; - Files[i].idx = dj->index; - Files[i].ctr = 0; - } - - if (acc && Files[i].ctr) return 0; /* Access violation (int err) */ - - Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */ - - return i + 1; -} - - -static -FRESULT dec_lock ( /* Decrement file open counter */ - UINT i /* Semaphore index */ -) -{ - WORD n; - FRESULT res; - - - if (--i < _FS_SHARE) { - n = Files[i].ctr; - if (n == 0x100) n = 0; - if (n) n--; - Files[i].ctr = n; - if (!n) Files[i].fs = 0; - res = FR_OK; - } else { - res = FR_INT_ERR; - } - return res; -} - - -static -void clear_lock ( /* Clear lock entries of the volume */ - FATFS *fs -) -{ - UINT i; - - for (i = 0; i < _FS_SHARE; i++) { - if (Files[i].fs == fs) Files[i].fs = 0; - } -} -#endif - - - -/*-----------------------------------------------------------------------*/ -/* Change window offset */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT move_window ( - FATFS *fs, /* File system object */ - DWORD sector /* Sector number to make appearance in the fs->win[] */ -) /* Move to zero only writes back dirty window */ -{ - DWORD wsect; - - - wsect = fs->winsect; - if (wsect != sector) { /* Changed current window */ -#if !_FS_READONLY - if (fs->wflag) { /* Write back dirty window if needed */ - if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) - return FR_DISK_ERR; - fs->wflag = 0; - if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */ - BYTE nf; - for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */ - wsect += fs->fsize; - disk_write(fs->drv, fs->win, wsect, 1); - } - } - } -#endif - if (sector) { - if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) - return FR_DISK_ERR; - fs->winsect = sector; - } - } - - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Clean-up cached data */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY -static -FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */ - FATFS *fs /* File system object */ -) -{ - FRESULT res; - - - res = move_window(fs, 0); - if (res == FR_OK) { - /* Update FSInfo sector if needed */ - if (fs->fs_type == FS_FAT32 && fs->fsi_flag) { - fs->winsect = 0; - /* Create FSInfo structure */ - mem_set(fs->win, 0, 512); - ST_WORD(fs->win+BS_55AA, 0xAA55); - ST_DWORD(fs->win+FSI_LeadSig, 0x41615252); - ST_DWORD(fs->win+FSI_StrucSig, 0x61417272); - ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust); - ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust); - /* Write it into the FSInfo sector */ - disk_write(fs->drv, fs->win, fs->fsi_sector, 1); - fs->fsi_flag = 0; - } - /* Make sure that no pending write process in the physical drive */ - if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK) - res = FR_DISK_ERR; - } - - return res; -} -#endif - - - - -/*-----------------------------------------------------------------------*/ -/* Get sector# from cluster# */ -/*-----------------------------------------------------------------------*/ - - -DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ - FATFS *fs, /* File system object */ - DWORD clst /* Cluster# to be converted */ -) -{ - clst -= 2; - if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ - return clst * fs->csize + fs->database; -} - - - - -/*-----------------------------------------------------------------------*/ -/* FAT access - Read value of a FAT entry */ -/*-----------------------------------------------------------------------*/ - - -DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */ - FATFS *fs, /* File system object */ - DWORD clst /* Cluster# to get the link information */ -) -{ - UINT wc, bc; - BYTE *p; - - - if (clst < 2 || clst >= fs->n_fatent) /* Chack range */ - return 1; - - switch (fs->fs_type) { - case FS_FAT12 : - bc = (UINT)clst; bc += bc / 2; - if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; - wc = fs->win[bc % SS(fs)]; bc++; - if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; - wc |= fs->win[bc % SS(fs)] << 8; - return (clst & 1) ? (wc >> 4) : (wc & 0xFFF); - - case FS_FAT16 : - if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break; - p = &fs->win[clst * 2 % SS(fs)]; - return LD_WORD(p); - - case FS_FAT32 : - if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break; - p = &fs->win[clst * 4 % SS(fs)]; - return LD_DWORD(p) & 0x0FFFFFFF; - } - - return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* FAT access - Change value of a FAT entry */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY - -FRESULT put_fat ( - FATFS *fs, /* File system object */ - DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */ - DWORD val /* New value to mark the cluster */ -) -{ - UINT bc; - BYTE *p; - FRESULT res; - - - if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ - res = FR_INT_ERR; - - } else { - switch (fs->fs_type) { - case FS_FAT12 : - bc = clst; bc += bc / 2; - res = move_window(fs, fs->fatbase + (bc / SS(fs))); - if (res != FR_OK) break; - p = &fs->win[bc % SS(fs)]; - *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; - bc++; - fs->wflag = 1; - res = move_window(fs, fs->fatbase + (bc / SS(fs))); - if (res != FR_OK) break; - p = &fs->win[bc % SS(fs)]; - *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); - break; - - case FS_FAT16 : - res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); - if (res != FR_OK) break; - p = &fs->win[clst * 2 % SS(fs)]; - ST_WORD(p, (WORD)val); - break; - - case FS_FAT32 : - res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); - if (res != FR_OK) break; - p = &fs->win[clst * 4 % SS(fs)]; - val |= LD_DWORD(p) & 0xF0000000; - ST_DWORD(p, val); - break; - - default : - res = FR_INT_ERR; - } - fs->wflag = 1; - } - - return res; -} -#endif /* !_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* FAT handling - Remove a cluster chain */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY -static -FRESULT remove_chain ( - FATFS *fs, /* File system object */ - DWORD clst /* Cluster# to remove a chain from */ -) -{ - FRESULT res; - DWORD nxt; -#if _USE_ERASE - DWORD scl = clst, ecl = clst, resion[2]; -#endif - - if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ - res = FR_INT_ERR; - - } else { - res = FR_OK; - while (clst < fs->n_fatent) { /* Not a last link? */ - nxt = get_fat(fs, clst); /* Get cluster status */ - if (nxt == 0) break; /* Empty cluster? */ - if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */ - if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */ - res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */ - if (res != FR_OK) break; - if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */ - fs->free_clust++; - fs->fsi_flag = 1; - } -#if _USE_ERASE - if (ecl + 1 == nxt) { /* Next cluster is contiguous */ - ecl = nxt; - } else { /* End of contiguous clusters */ - resion[0] = clust2sect(fs, scl); /* Start sector */ - resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */ - disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */ - scl = ecl = nxt; - } -#endif - clst = nxt; /* Next cluster */ - } - } - - return res; -} -#endif - - - - -/*-----------------------------------------------------------------------*/ -/* FAT handling - Stretch or Create a cluster chain */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY -static -DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ - FATFS *fs, /* File system object */ - DWORD clst /* Cluster# to stretch. 0 means create a new chain. */ -) -{ - DWORD cs, ncl, scl; - FRESULT res; - - - if (clst == 0) { /* Create a new chain */ - scl = fs->last_clust; /* Get suggested start point */ - if (!scl || scl >= fs->n_fatent) scl = 1; - } - else { /* Stretch the current chain */ - cs = get_fat(fs, clst); /* Check the cluster status */ - if (cs < 2) return 1; /* It is an invalid cluster */ - if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */ - scl = clst; - } - - ncl = scl; /* Start cluster */ - for (;;) { - ncl++; /* Next cluster */ - if (ncl >= fs->n_fatent) { /* Wrap around */ - ncl = 2; - if (ncl > scl) return 0; /* No free cluster */ - } - cs = get_fat(fs, ncl); /* Get the cluster status */ - if (cs == 0) break; /* Found a free cluster */ - if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */ - return cs; - if (ncl == scl) return 0; /* No free cluster */ - } - - res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */ - if (res == FR_OK && clst != 0) { - res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */ - } - if (res == FR_OK) { - fs->last_clust = ncl; /* Update FSINFO */ - if (fs->free_clust != 0xFFFFFFFF) { - fs->free_clust--; - fs->fsi_flag = 1; - } - } else { - ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; - } - - return ncl; /* Return new cluster number or error code */ -} -#endif /* !_FS_READONLY */ - - - -/*-----------------------------------------------------------------------*/ -/* FAT handling - Convert offset into cluster with link map table */ -/*-----------------------------------------------------------------------*/ - -#if _USE_FASTSEEK -static -DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */ - FIL* fp, /* Pointer to the file object */ - DWORD ofs /* File offset to be converted to cluster# */ -) -{ - DWORD cl, ncl, *tbl; - - - tbl = fp->cltbl + 1; /* Top of CLMT */ - cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */ - for (;;) { - ncl = *tbl++; /* Number of cluters in the fragment */ - if (!ncl) return 0; /* End of table? (error) */ - if (cl < ncl) break; /* In this fragment? */ - cl -= ncl; tbl++; /* Next fragment */ - } - return cl + *tbl; /* Return the cluster number */ -} -#endif /* _USE_FASTSEEK */ - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Set directory index */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_sdi ( - DIR *dj, /* Pointer to directory object */ - WORD idx /* Directory index number */ -) -{ - DWORD clst; - WORD ic; - - - dj->index = idx; - clst = dj->sclust; - if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */ - return FR_INT_ERR; - if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */ - clst = dj->fs->dirbase; - - if (clst == 0) { /* Static table (root-dir in FAT12/16) */ - dj->clust = clst; - if (idx >= dj->fs->n_rootdir) /* Index is out of range */ - return FR_INT_ERR; - dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ - } - else { /* Dynamic table (sub-dirs or root-dir in FAT32) */ - ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */ - while (idx >= ic) { /* Follow cluster chain */ - clst = get_fat(dj->fs, clst); /* Get next cluster */ - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ - if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */ - return FR_INT_ERR; - idx -= ic; - } - dj->clust = clst; - dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ - } - - dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */ - - return FR_OK; /* Seek succeeded */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Move directory index next */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */ - DIR *dj, /* Pointer to directory object */ - int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ -) -{ - DWORD clst; - WORD i; - - - i = dj->index + 1; - if (!i || !dj->sect) /* Report EOT when index has reached 65535 */ - return FR_NO_FILE; - - if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */ - dj->sect++; /* Next sector */ - - if (dj->clust == 0) { /* Static table */ - if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */ - return FR_NO_FILE; - } - else { /* Dynamic table */ - if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */ - clst = get_fat(dj->fs, dj->clust); /* Get next cluster */ - if (clst <= 1) return FR_INT_ERR; - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; - if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */ -#if !_FS_READONLY - BYTE c; - if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */ - clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */ - if (clst == 0) return FR_DENIED; /* No free cluster */ - if (clst == 1) return FR_INT_ERR; - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; - /* Clean-up stretched table */ - if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */ - mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */ - dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */ - for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */ - dj->fs->wflag = 1; - if (move_window(dj->fs, 0)) return FR_DISK_ERR; - dj->fs->winsect++; - } - dj->fs->winsect -= c; /* Rewind window address */ -#else - return FR_NO_FILE; /* Report EOT */ -#endif - } - dj->clust = clst; /* Initialize data for new cluster */ - dj->sect = clust2sect(dj->fs, clst); - } - } - } - - dj->index = i; - dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; - - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */ -/*-----------------------------------------------------------------------*/ -#if _USE_LFN -static -const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */ - - -static -int cmp_lfn ( /* 1:Matched, 0:Not matched */ - WCHAR *lfnbuf, /* Pointer to the LFN to be compared */ - BYTE *dir /* Pointer to the directory entry containing a part of LFN */ -) -{ - UINT i, s; - WCHAR wc, uc; - - - i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */ - s = 0; wc = 1; - do { - uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ - if (wc) { /* Last char has not been processed */ - wc = ff_wtoupper(uc); /* Convert it to upper case */ - if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */ - return 0; /* Not matched */ - } else { - if (uc != 0xFFFF) return 0; /* Check filler */ - } - } while (++s < 13); /* Repeat until all chars in the entry are checked */ - - if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */ - return 0; - - return 1; /* The part of LFN matched */ -} - - - -static -int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */ - WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */ - BYTE *dir /* Pointer to the directory entry */ -) -{ - UINT i, s; - WCHAR wc, uc; - - - i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ - - s = 0; wc = 1; - do { - uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ - if (wc) { /* Last char has not been processed */ - if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ - lfnbuf[i++] = wc = uc; /* Store it */ - } else { - if (uc != 0xFFFF) return 0; /* Check filler */ - } - } while (++s < 13); /* Read all character in the entry */ - - if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */ - if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ - lfnbuf[i] = 0; - } - - return 1; -} - - -#if !_FS_READONLY -static -void fit_lfn ( - const WCHAR *lfnbuf, /* Pointer to the LFN buffer */ - BYTE *dir, /* Pointer to the directory entry */ - BYTE ord, /* LFN order (1-20) */ - BYTE sum /* SFN sum */ -) -{ - UINT i, s; - WCHAR wc; - - - dir[LDIR_Chksum] = sum; /* Set check sum */ - dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ - dir[LDIR_Type] = 0; - ST_WORD(dir+LDIR_FstClusLO, 0); - - i = (ord - 1) * 13; /* Get offset in the LFN buffer */ - s = wc = 0; - do { - if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */ - ST_WORD(dir+LfnOfs[s], wc); /* Put it */ - if (!wc) wc = 0xFFFF; /* Padding chars following last char */ - } while (++s < 13); - if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */ - dir[LDIR_Ord] = ord; /* Set the LFN order */ -} - -#endif -#endif - - - -/*-----------------------------------------------------------------------*/ -/* Create numbered name */ -/*-----------------------------------------------------------------------*/ -#if _USE_LFN -void gen_numname ( - BYTE *dst, /* Pointer to generated SFN */ - const BYTE *src, /* Pointer to source SFN to be modified */ - const WCHAR *lfn, /* Pointer to LFN */ - WORD seq /* Sequence number */ -) -{ - BYTE ns[8], c; - UINT i, j; - - - mem_cpy(dst, src, 11); - - if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */ - do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn); - } - - /* itoa (hexdecimal) */ - i = 7; - do { - c = (seq % 16) + '0'; - if (c > '9') c += 7; - ns[i--] = c; - seq /= 16; - } while (seq); - ns[i] = '~'; - - /* Append the number */ - for (j = 0; j < i && dst[j] != ' '; j++) { - if (IsDBCS1(dst[j])) { - if (j == i - 1) break; - j++; - } - } - do { - dst[j++] = (i < 8) ? ns[i++] : ' '; - } while (j < 8); -} -#endif - - - - -/*-----------------------------------------------------------------------*/ -/* Calculate sum of an SFN */ -/*-----------------------------------------------------------------------*/ -#if _USE_LFN -static -BYTE sum_sfn ( - const BYTE *dir /* Ptr to directory entry */ -) -{ - BYTE sum = 0; - UINT n = 11; - - do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n); - return sum; -} -#endif - - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Find an object in the directory */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_find ( - DIR *dj /* Pointer to the directory object linked to the file name */ -) -{ - FRESULT res; - BYTE c, *dir; -#if _USE_LFN - BYTE a, ord, sum; -#endif - - res = dir_sdi(dj, 0); /* Rewind directory object */ - if (res != FR_OK) return res; - -#if _USE_LFN - ord = sum = 0xFF; -#endif - do { - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - dir = dj->dir; /* Ptr to the directory entry of current index */ - c = dir[DIR_Name]; - if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ -#if _USE_LFN /* LFN configuration */ - a = dir[DIR_Attr] & AM_MASK; - if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ - ord = 0xFF; - } else { - if (a == AM_LFN) { /* An LFN entry is found */ - if (dj->lfn) { - if (c & LLE) { /* Is it start of LFN sequence? */ - sum = dir[LDIR_Chksum]; - c &= ~LLE; ord = c; /* LFN start order */ - dj->lfn_idx = dj->index; - } - /* Check validity of the LFN entry and compare it with given name */ - ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; - } - } else { /* An SFN entry is found */ - if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */ - ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */ - if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */ - } - } -#else /* Non LFN configuration */ - if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */ - break; -#endif - res = dir_next(dj, 0); /* Next entry */ - } while (res == FR_OK); - - return res; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Read an object from the directory */ -/*-----------------------------------------------------------------------*/ -#if _FS_MINIMIZE <= 1 -static -FRESULT dir_read ( - DIR *dj /* Pointer to the directory object that pointing the entry to be read */ -) -{ - FRESULT res; - BYTE c, *dir; -#if _USE_LFN - BYTE a, ord = 0xFF, sum = 0xFF; -#endif - - res = FR_NO_FILE; - while (dj->sect) { - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - dir = dj->dir; /* Ptr to the directory entry of current index */ - c = dir[DIR_Name]; - if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ -#if _USE_LFN /* LFN configuration */ - a = dir[DIR_Attr] & AM_MASK; - if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ - ord = 0xFF; - } else { - if (a == AM_LFN) { /* An LFN entry is found */ - if (c & LLE) { /* Is it start of LFN sequence? */ - sum = dir[LDIR_Chksum]; - c &= ~LLE; ord = c; - dj->lfn_idx = dj->index; - } - /* Check LFN validity and capture it */ - ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; - } else { /* An SFN entry is found */ - if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */ - dj->lfn_idx = 0xFFFF; /* It has no LFN. */ - break; - } - } -#else /* Non LFN configuration */ - if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */ - break; -#endif - res = dir_next(dj, 0); /* Next entry */ - if (res != FR_OK) break; - } - - if (res != FR_OK) dj->sect = 0; - - return res; -} -#endif - - - -/*-----------------------------------------------------------------------*/ -/* Register an object to the directory */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY -static -FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */ - DIR *dj /* Target directory with object name to be created */ -) -{ - FRESULT res; - BYTE c, *dir; -#if _USE_LFN /* LFN configuration */ - WORD n, ne, is; - BYTE sn[12], *fn, sum; - WCHAR *lfn; - - - fn = dj->fn; lfn = dj->lfn; - mem_cpy(sn, fn, 12); - - if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */ - return FR_INVALID_NAME; - - if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ - fn[NS] = 0; dj->lfn = 0; /* Find only SFN */ - for (n = 1; n < 100; n++) { - gen_numname(fn, sn, lfn, n); /* Generate a numbered name */ - res = dir_find(dj); /* Check if the name collides with existing SFN */ - if (res != FR_OK) break; - } - if (n == 100) return FR_DENIED; /* Abort if too many collisions */ - if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */ - fn[NS] = sn[NS]; dj->lfn = lfn; - } - - if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */ - for (ne = 0; lfn[ne]; ne++) ; - ne = (ne + 25) / 13; - } else { /* Otherwise reserve only an SFN entry. */ - ne = 1; - } - - /* Reserve contiguous entries */ - res = dir_sdi(dj, 0); - if (res != FR_OK) return res; - n = is = 0; - do { - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - c = *dj->dir; /* Check the entry status */ - if (c == DDE || c == 0) { /* Is it a blank entry? */ - if (n == 0) is = dj->index; /* First index of the contiguous entry */ - if (++n == ne) break; /* A contiguous entry that required count is found */ - } else { - n = 0; /* Not a blank entry. Restart to search */ - } - res = dir_next(dj, 1); /* Next entry with table stretch */ - } while (res == FR_OK); - - if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */ - res = dir_sdi(dj, is); - if (res == FR_OK) { - sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */ - ne--; - do { /* Store LFN entries in bottom first */ - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum); - dj->fs->wflag = 1; - res = dir_next(dj, 0); /* Next entry */ - } while (res == FR_OK && --ne); - } - } - -#else /* Non LFN configuration */ - res = dir_sdi(dj, 0); - if (res == FR_OK) { - do { /* Find a blank entry for the SFN */ - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - c = *dj->dir; - if (c == DDE || c == 0) break; /* Is it a blank entry? */ - res = dir_next(dj, 1); /* Next entry with table stretch */ - } while (res == FR_OK); - } -#endif - - if (res == FR_OK) { /* Initialize the SFN entry */ - res = move_window(dj->fs, dj->sect); - if (res == FR_OK) { - dir = dj->dir; - mem_set(dir, 0, SZ_DIR); /* Clean the entry */ - mem_cpy(dir, dj->fn, 11); /* Put SFN */ -#if _USE_LFN - dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */ -#endif - dj->fs->wflag = 1; - } - } - - return res; -} -#endif /* !_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* Remove an object from the directory */ -/*-----------------------------------------------------------------------*/ -#if !_FS_READONLY && !_FS_MINIMIZE -static -FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ - DIR *dj /* Directory object pointing the entry to be removed */ -) -{ - FRESULT res; -#if _USE_LFN /* LFN configuration */ - WORD i; - - i = dj->index; /* SFN index */ - res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */ - if (res == FR_OK) { - do { - res = move_window(dj->fs, dj->sect); - if (res != FR_OK) break; - *dj->dir = DDE; /* Mark the entry "deleted" */ - dj->fs->wflag = 1; - if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */ - res = dir_next(dj, 0); /* Next entry */ - } while (res == FR_OK); - if (res == FR_NO_FILE) res = FR_INT_ERR; - } - -#else /* Non LFN configuration */ - res = dir_sdi(dj, dj->index); - if (res == FR_OK) { - res = move_window(dj->fs, dj->sect); - if (res == FR_OK) { - *dj->dir = DDE; /* Mark the entry "deleted" */ - dj->fs->wflag = 1; - } - } -#endif - - return res; -} -#endif /* !_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* Pick a segment and create the object name in directory form */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT create_name ( - DIR *dj, /* Pointer to the directory object */ - const TCHAR **path /* Pointer to pointer to the segment in the path string */ -) -{ -#ifdef _EXCVT - static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */ -#endif - -#if _USE_LFN /* LFN configuration */ - BYTE b, cf; - WCHAR w, *lfn; - UINT i, ni, si, di; - const TCHAR *p; - - /* Create LFN in Unicode */ - for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ - lfn = dj->lfn; - si = di = 0; - for (;;) { - w = p[si++]; /* Get a character */ - if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */ - if (di >= _MAX_LFN) /* Reject too long name */ - return FR_INVALID_NAME; -#if !_LFN_UNICODE - w &= 0xFF; - if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ - b = (BYTE)p[si++]; /* Get 2nd byte */ - if (!IsDBCS2(b)) - return FR_INVALID_NAME; /* Reject invalid sequence */ - w = (w << 8) + b; /* Create a DBC */ - } - w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */ - if (!w) return FR_INVALID_NAME; /* Reject invalid code */ -#endif - if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */ - return FR_INVALID_NAME; - lfn[di++] = w; /* Store the Unicode char */ - } - *path = &p[si]; /* Return pointer to the next segment */ - cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ -#if _FS_RPATH - if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */ - (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) { - lfn[di] = 0; - for (i = 0; i < 11; i++) - dj->fn[i] = (i < di) ? '.' : ' '; - dj->fn[i] = cf | NS_DOT; /* This is a dot entry */ - return FR_OK; - } -#endif - while (di) { /* Strip trailing spaces and dots */ - w = lfn[di-1]; - if (w != ' ' && w != '.') break; - di--; - } - if (!di) return FR_INVALID_NAME; /* Reject nul string */ - - lfn[di] = 0; /* LFN is created */ - - /* Create SFN in directory form */ - mem_set(dj->fn, ' ', 11); - for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */ - if (si) cf |= NS_LOSS | NS_LFN; - while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */ - - b = i = 0; ni = 8; - for (;;) { - w = lfn[si++]; /* Get an LFN char */ - if (!w) break; /* Break on end of the LFN */ - if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */ - cf |= NS_LOSS | NS_LFN; continue; - } - - if (i >= ni || si == di) { /* Extension or end of SFN */ - if (ni == 11) { /* Long extension */ - cf |= NS_LOSS | NS_LFN; break; - } - if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */ - if (si > di) break; /* No extension */ - si = di; i = 8; ni = 11; /* Enter extension section */ - b <<= 2; continue; - } - - if (w >= 0x80) { /* Non ASCII char */ -#ifdef _EXCVT - w = ff_convert(w, 0); /* Unicode -> OEM code */ - if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */ -#else - w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */ -#endif - cf |= NS_LFN; /* Force create LFN entry */ - } - - if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */ - if (i >= ni - 1) { - cf |= NS_LOSS | NS_LFN; i = ni; continue; - } - dj->fn[i++] = (BYTE)(w >> 8); - } else { /* Single byte char */ - if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */ - w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */ - } else { - if (IsUpper(w)) { /* ASCII large capital */ - b |= 2; - } else { - if (IsLower(w)) { /* ASCII small capital */ - b |= 1; w -= 0x20; - } - } - } - } - dj->fn[i++] = (BYTE)w; - } - - if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */ - - if (ni == 8) b <<= 2; - if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */ - cf |= NS_LFN; - if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */ - if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */ - if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */ - } - - dj->fn[NS] = cf; /* SFN is created */ - - return FR_OK; - - -#else /* Non-LFN configuration */ - BYTE b, c, d, *sfn; - UINT ni, si, i; - const char *p; - - /* Create file name in directory form */ - for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ - sfn = dj->fn; - mem_set(sfn, ' ', 11); - si = i = b = 0; ni = 8; -#if _FS_RPATH - if (p[si] == '.') { /* Is this a dot entry? */ - for (;;) { - c = (BYTE)p[si++]; - if (c != '.' || si >= 3) break; - sfn[i++] = c; - } - if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME; - *path = &p[si]; /* Return pointer to the next segment */ - sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */ - return FR_OK; - } -#endif - for (;;) { - c = (BYTE)p[si++]; - if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */ - if (c == '.' || i >= ni) { - if (ni != 8 || c != '.') return FR_INVALID_NAME; - i = 8; ni = 11; - b <<= 2; continue; - } - if (c >= 0x80) { /* Extended char? */ - b |= 3; /* Eliminate NT flag */ -#ifdef _EXCVT - c = excvt[c-0x80]; /* Upper conversion (SBCS) */ -#else -#if !_DF1S /* ASCII only cfg */ - return FR_INVALID_NAME; -#endif -#endif - } - if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ - d = (BYTE)p[si++]; /* Get 2nd byte */ - if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */ - return FR_INVALID_NAME; - sfn[i++] = c; - sfn[i++] = d; - } else { /* Single byte code */ - if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */ - return FR_INVALID_NAME; - if (IsUpper(c)) { /* ASCII large capital? */ - b |= 2; - } else { - if (IsLower(c)) { /* ASCII small capital? */ - b |= 1; c -= 0x20; - } - } - sfn[i++] = c; - } - } - *path = &p[si]; /* Return pointer to the next segment */ - c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ - - if (!i) return FR_INVALID_NAME; /* Reject nul string */ - if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */ - - if (ni == 8) b <<= 2; - if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */ - if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */ - - sfn[NS] = c; /* Store NT flag, File name is created */ - - return FR_OK; -#endif -} - - - - -/*-----------------------------------------------------------------------*/ -/* Get file information from directory entry */ -/*-----------------------------------------------------------------------*/ -#if _FS_MINIMIZE <= 1 -static -void get_fileinfo ( /* No return code */ - DIR *dj, /* Pointer to the directory object */ - FILINFO *fno /* Pointer to the file information to be filled */ -) -{ - UINT i; - BYTE nt, *dir; - TCHAR *p, c; - - - p = fno->fname; - if (dj->sect) { - dir = dj->dir; - nt = dir[DIR_NTres]; /* NT flag */ - for (i = 0; i < 8; i++) { /* Copy name body */ - c = dir[i]; - if (c == ' ') break; - if (c == NDDE) c = (TCHAR)DDE; - if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20; -#if _LFN_UNICODE - if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1])) - c = (c << 8) | dir[++i]; - c = ff_convert(c, 1); - if (!c) c = '?'; -#endif - *p++ = c; - } - if (dir[8] != ' ') { /* Copy name extension */ - *p++ = '.'; - for (i = 8; i < 11; i++) { - c = dir[i]; - if (c == ' ') break; - if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20; -#if _LFN_UNICODE - if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1])) - c = (c << 8) | dir[++i]; - c = ff_convert(c, 1); - if (!c) c = '?'; -#endif - *p++ = c; - } - } - fno->fattrib = dir[DIR_Attr]; /* Attribute */ - fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ - fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ - fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ - } - *p = 0; /* Terminate SFN str by a \0 */ - -#if _USE_LFN - if (fno->lfname && fno->lfsize) { - TCHAR *tp = fno->lfname; - WCHAR w, *lfn; - - i = 0; - if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */ - lfn = dj->lfn; - while ((w = *lfn++) != 0) { /* Get an LFN char */ -#if !_LFN_UNICODE - w = ff_convert(w, 0); /* Unicode -> OEM conversion */ - if (!w) { i = 0; break; } /* Could not convert, no LFN */ - if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */ - tp[i++] = (TCHAR)(w >> 8); -#endif - if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */ - tp[i++] = (TCHAR)w; - } - } - tp[i] = 0; /* Terminate the LFN str by a \0 */ - } -#endif -} -#endif /* _FS_MINIMIZE <= 1 */ - - - - -/*-----------------------------------------------------------------------*/ -/* Follow a file path */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ - DIR *dj, /* Directory object to return last directory and found object */ - const TCHAR *path /* Full-path string to find a file or directory */ -) -{ - FRESULT res; - BYTE *dir, ns; - - -#if _FS_RPATH - if (*path == '/' || *path == '\\') { /* There is a heading separator */ - path++; dj->sclust = 0; /* Strip it and start from the root dir */ - } else { /* No heading separator */ - dj->sclust = dj->fs->cdir; /* Start from the current dir */ - } -#else - if (*path == '/' || *path == '\\') /* Strip heading separator if exist */ - path++; - dj->sclust = 0; /* Start from the root dir */ -#endif - - if ((UINT)*path < ' ') { /* Nul path means the start directory itself */ - res = dir_sdi(dj, 0); - dj->dir = 0; - - } else { /* Follow path */ - for (;;) { - res = create_name(dj, &path); /* Get a segment */ - if (res != FR_OK) break; - res = dir_find(dj); /* Find it */ - ns = *(dj->fn+NS); - if (res != FR_OK) { /* Failed to find the object */ - if (res != FR_NO_FILE) break; /* Abort if any hard error occured */ - /* Object not found */ - if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */ - dj->sclust = 0; dj->dir = 0; /* It is the root dir */ - res = FR_OK; - if (!(ns & NS_LAST)) continue; - } else { /* Could not find the object */ - if (!(ns & NS_LAST)) res = FR_NO_PATH; - } - break; - } - if (ns & NS_LAST) break; /* Last segment match. Function completed. */ - dir = dj->dir; /* There is next segment. Follow the sub directory */ - if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */ - res = FR_NO_PATH; break; - } - dj->sclust = LD_CLUST(dir); - } - } - - return res; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Load boot record and check if it is an FAT boot record */ -/*-----------------------------------------------------------------------*/ - -static -BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */ - FATFS *fs, /* File system object */ - DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ -) -{ - if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */ - return 3; - if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */ - return 2; - - if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ - return 0; - if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) - return 0; - - return 1; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Check if the file system object is valid or not */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */ - const TCHAR **path, /* Pointer to pointer to the path name (drive number) */ - FATFS **rfs, /* Pointer to pointer to the found file system object */ - BYTE chk_wp /* !=0: Check media write protection for write access */ -) -{ - BYTE fmt, b, *tbl; - UINT vol; - DSTATUS stat; - DWORD bsect, fasize, tsect, sysect, nclst, szbfat; - WORD nrsv; - const TCHAR *p = *path; - FATFS *fs; - - /* Get logical drive number from the path name */ - vol = p[0] - '0'; /* Is there a drive number? */ - if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */ - p += 2; *path = p; /* Return pointer to the path name */ - } else { /* No drive number is given */ -#if _FS_RPATH - vol = CurrVol; /* Use current drive */ -#else - vol = 0; /* Use drive 0 */ -#endif - } - - /* Check if the logical drive is valid or not */ - if (vol >= _VOLUMES) /* Is the drive number valid? */ - return FR_INVALID_DRIVE; - *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */ - if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */ - - ENTER_FF(fs); /* Lock file system */ - - if (fs->fs_type) { /* If the logical drive has been mounted */ - stat = disk_status(fs->drv); - if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */ -#if !_FS_READONLY - if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ - return FR_WRITE_PROTECTED; -#endif - return FR_OK; /* The file system object is valid */ - } - } - - /* The logical drive must be mounted. */ - /* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */ - - fs->fs_type = 0; /* Clear the file system object */ - fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */ - stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */ - if (stat & STA_NOINIT) /* Check if the initialization succeeded */ - return FR_NOT_READY; /* Failed to initialize due to no media or hard error */ -#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */ - if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK) - return FR_DISK_ERR; -#endif -#if !_FS_READONLY - if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */ - return FR_WRITE_PROTECTED; -#endif - /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */ - fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */ - if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */ - /* Check the partition listed in top of the partition table */ - tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */ - if (tbl[4]) { /* Is the partition existing? */ - bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */ - fmt = check_fs(fs, bsect); /* Check the partition */ - } - } - if (fmt == 3) return FR_DISK_ERR; - if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */ - - /* Following code initializes the file system object */ - - if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */ - return FR_NO_FILESYSTEM; - - fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */ - if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32); - fs->fsize = fasize; - - fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */ - if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ - fasize *= b; /* Number of sectors for FAT area */ - - fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ - if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */ - - fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */ - if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */ - - tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */ - if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32); - - nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ - if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */ - - /* Determine the FAT sub type */ - sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */ - if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ - nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ - if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ - fmt = FS_FAT12; - if (nclst >= MIN_FAT16) fmt = FS_FAT16; - if (nclst >= MIN_FAT32) fmt = FS_FAT32; - - /* Boundaries and Limits */ - fs->n_fatent = nclst + 2; /* Number of FAT entries */ - fs->database = bsect + sysect; /* Data start sector */ - fs->fatbase = bsect + nrsv; /* FAT start sector */ - if (fmt == FS_FAT32) { - if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ - fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */ - szbfat = fs->n_fatent * 4; /* (Required FAT size) */ - } else { - if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ - fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ - szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */ - fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); - } - if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */ - return FR_NO_FILESYSTEM; - -#if !_FS_READONLY - /* Initialize cluster allocation information */ - fs->free_clust = 0xFFFFFFFF; - fs->last_clust = 0; - - /* Get fsinfo if available */ - if (fmt == FS_FAT32) { - fs->fsi_flag = 0; - fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo); - if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK && - LD_WORD(fs->win+BS_55AA) == 0xAA55 && - LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 && - LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) { - fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free); - fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count); - } - } -#endif - fs->fs_type = fmt; /* FAT sub-type */ - fs->id = ++Fsid; /* File system mount ID */ - fs->winsect = 0; /* Invalidate sector cache */ - fs->wflag = 0; -#if _FS_RPATH - fs->cdir = 0; /* Current directory (root dir) */ -#endif -#if _FS_SHARE /* Clear file lock semaphores */ - clear_lock(fs); -#endif - - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Check if the file/dir object is valid or not */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ - FATFS *fs, /* Pointer to the file system object */ - WORD id /* Member id of the target object to be checked */ -) -{ - if (!fs || !fs->fs_type || fs->id != id) - return FR_INVALID_OBJECT; - - ENTER_FF(fs); /* Lock file system */ - - if (disk_status(fs->drv) & STA_NOINIT) - return FR_NOT_READY; - - return FR_OK; -} - - - - -/*-------------------------------------------------------------------------- - - Public Functions - ---------------------------------------------------------------------------*/ - - - -/*-----------------------------------------------------------------------*/ -/* Mount/Unmount a Logical Drive */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_mount ( - BYTE vol, /* Logical drive number to be mounted/unmounted */ - FATFS *fs /* Pointer to new file system object (NULL for unmount)*/ -) -{ - FATFS *rfs; - - - if (vol >= _VOLUMES) /* Check if the drive number is valid */ - return FR_INVALID_DRIVE; - rfs = FatFs[vol]; /* Get current fs object */ - - if (rfs) { -#if _FS_SHARE - clear_lock(rfs); -#endif -#if _FS_REENTRANT /* Discard sync object of the current volume */ - if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR; -#endif - rfs->fs_type = 0; /* Clear old fs object */ - } - - if (fs) { - fs->fs_type = 0; /* Clear new fs object */ -#if _FS_REENTRANT /* Create sync object for the new volume */ - if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR; -#endif - } - FatFs[vol] = fs; /* Register new fs object */ - - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Open or Create a File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_open ( - FIL *fp, /* Pointer to the blank file object */ - const TCHAR *path, /* Pointer to the file name */ - BYTE mode /* Access mode and file open mode flags */ -) -{ - FRESULT res; - DIR dj; - BYTE *dir; - DEF_NAMEBUF; - - - fp->fs = 0; /* Clear file object */ - -#if !_FS_READONLY - mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW; - res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ)); -#else - mode &= FA_READ; - res = chk_mounted(&path, &dj.fs, 0); -#endif - INIT_BUF(dj); - if (res == FR_OK) - res = follow_path(&dj, path); /* Follow the file path */ - dir = dj.dir; - -#if !_FS_READONLY /* R/W configuration */ - if (res == FR_OK) { - if (!dir) /* Current dir itself */ - res = FR_INVALID_NAME; -#if _FS_SHARE - else - res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); -#endif - } - /* Create or Open a file */ - if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) { - DWORD dw, cl; - - if (res != FR_OK) { /* No file, create new */ - if (res == FR_NO_FILE) /* There is no file to open, create a new entry */ -#if _FS_SHARE - res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; -#else - res = dir_register(&dj); -#endif - mode |= FA_CREATE_ALWAYS; /* File is created */ - dir = dj.dir; /* New entry */ - } - else { /* Any object is already existing */ - if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */ - res = FR_DENIED; - } else { - if (mode & FA_CREATE_NEW) /* Cannot create as new file */ - res = FR_EXIST; - } - } - if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ - dw = get_fattime(); /* Created time */ - ST_DWORD(dir+DIR_CrtTime, dw); - dir[DIR_Attr] = 0; /* Reset attribute */ - ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ - cl = LD_CLUST(dir); /* Get start cluster */ - ST_CLUST(dir, 0); /* cluster = 0 */ - dj.fs->wflag = 1; - if (cl) { /* Remove the cluster chain if exist */ - dw = dj.fs->winsect; - res = remove_chain(dj.fs, cl); - if (res == FR_OK) { - dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */ - res = move_window(dj.fs, dw); - } - } - } - } - else { /* Open an existing file */ - if (res == FR_OK) { /* Follow succeeded */ - if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */ - res = FR_NO_FILE; - } else { - if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ - res = FR_DENIED; - } - } - } - if (res == FR_OK) { - if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */ - mode |= FA__WRITTEN; - fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ - fp->dir_ptr = dir; -#if _FS_SHARE - fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); - if (!fp->lockid) res = FR_INT_ERR; -#endif - } - -#else /* R/O configuration */ - if (res == FR_OK) { /* Follow succeeded */ - if (!dir) { /* Current dir itself */ - res = FR_INVALID_NAME; - } else { - if (dir[DIR_Attr] & AM_DIR) /* It is a directory */ - res = FR_NO_FILE; - } - } -#endif - FREE_BUF(); - - if (res == FR_OK) { - fp->flag = mode; /* File access mode */ - fp->sclust = LD_CLUST(dir); /* File start cluster */ - fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ - fp->fptr = 0; /* File pointer */ - fp->dsect = 0; -#if _USE_FASTSEEK - fp->cltbl = 0; /* Normal seek mode */ -#endif - fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */ - } - - LEAVE_FF(dj.fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Read File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_read ( - FIL *fp, /* Pointer to the file object */ - void *buff, /* Pointer to data buffer */ - UINT btr, /* Number of bytes to read */ - UINT *br /* Pointer to number of bytes read */ -) -{ - FRESULT res; - DWORD clst, sect, remain; - UINT rcnt, cc; - BYTE csect, *rbuff = buff; - - - *br = 0; /* Initialize byte counter */ - - res = validate(fp->fs, fp->id); /* Check validity */ - if (res != FR_OK) LEAVE_FF(fp->fs, res); - if (fp->flag & FA__ERROR) /* Aborted file? */ - LEAVE_FF(fp->fs, FR_INT_ERR); - if (!(fp->flag & FA_READ)) /* Check access mode */ - LEAVE_FF(fp->fs, FR_DENIED); - remain = fp->fsize - fp->fptr; - if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ - - for ( ; btr; /* Repeat until all data read */ - rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { - if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ - csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ - if (!csect) { /* On the cluster boundary? */ - if (fp->fptr == 0) { /* On the top of the file? */ - clst = fp->sclust; /* Follow from the origin */ - } else { /* Middle or end of the file */ -#if _USE_FASTSEEK - if (fp->cltbl) - clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ - else -#endif - clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */ - } - if (clst < 2) ABORT(fp->fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - } - sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ - if (!sect) ABORT(fp->fs, FR_INT_ERR); - sect += csect; - cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ - if (cc) { /* Read maximum contiguous sectors directly */ - if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ - cc = fp->fs->csize - csect; - if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); -#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */ -#if _FS_TINY - if (fp->fs->wflag && fp->fs->winsect - sect < cc) - mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); -#else - if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) - mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs)); -#endif -#endif - rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ - continue; - } -#if !_FS_TINY - if (fp->dsect != sect) { /* Load data sector if not in cache */ -#if !_FS_READONLY - if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); - fp->flag &= ~FA__DIRTY; - } -#endif - if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */ - ABORT(fp->fs, FR_DISK_ERR); - } -#endif - fp->dsect = sect; - } - rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */ - if (rcnt > btr) rcnt = btr; -#if _FS_TINY - if (move_window(fp->fs, fp->dsect)) /* Move sector window */ - ABORT(fp->fs, FR_DISK_ERR); - mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ -#else - mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ -#endif - } - - LEAVE_FF(fp->fs, FR_OK); -} - - - - -#if !_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Write File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_write ( - FIL *fp, /* Pointer to the file object */ - const void *buff, /* Pointer to the data to be written */ - UINT btw, /* Number of bytes to write */ - UINT *bw /* Pointer to number of bytes written */ -) -{ - FRESULT res; - DWORD clst, sect; - UINT wcnt, cc; - const BYTE *wbuff = buff; - BYTE csect; - - - *bw = 0; /* Initialize byte counter */ - - res = validate(fp->fs, fp->id); /* Check validity */ - if (res != FR_OK) LEAVE_FF(fp->fs, res); - if (fp->flag & FA__ERROR) /* Aborted file? */ - LEAVE_FF(fp->fs, FR_INT_ERR); - if (!(fp->flag & FA_WRITE)) /* Check access mode */ - LEAVE_FF(fp->fs, FR_DENIED); - if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */ - - for ( ; btw; /* Repeat until all data written */ - wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { - if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ - csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ - if (!csect) { /* On the cluster boundary? */ - if (fp->fptr == 0) { /* On the top of the file? */ - clst = fp->sclust; /* Follow from the origin */ - if (clst == 0) /* When no cluster is allocated, */ - fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */ - } else { /* Middle or end of the file */ -#if _USE_FASTSEEK - if (fp->cltbl) - clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ - else -#endif - clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */ - } - if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ - if (clst == 1) ABORT(fp->fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - } -#if _FS_TINY - if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */ - ABORT(fp->fs, FR_DISK_ERR); -#else - if (fp->flag & FA__DIRTY) { /* Write-back sector cache */ - if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); - fp->flag &= ~FA__DIRTY; - } -#endif - sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ - if (!sect) ABORT(fp->fs, FR_INT_ERR); - sect += csect; - cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ - if (cc) { /* Write maximum contiguous sectors directly */ - if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ - cc = fp->fs->csize - csect; - if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); -#if _FS_TINY - if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ - mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs)); - fp->fs->wflag = 0; - } -#else - if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ - mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs)); - fp->flag &= ~FA__DIRTY; - } -#endif - wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ - continue; - } -#if _FS_TINY - if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */ - if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR); - fp->fs->winsect = sect; - } -#else - if (fp->dsect != sect) { /* Fill sector cache with file data */ - if (fp->fptr < fp->fsize && - disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); - } -#endif - fp->dsect = sect; - } - wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */ - if (wcnt > btw) wcnt = btw; -#if _FS_TINY - if (move_window(fp->fs, fp->dsect)) /* Move sector window */ - ABORT(fp->fs, FR_DISK_ERR); - mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ - fp->fs->wflag = 1; -#else - mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ - fp->flag |= FA__DIRTY; -#endif - } - - if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ - fp->flag |= FA__WRITTEN; /* Set file change flag */ - - LEAVE_FF(fp->fs, FR_OK); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Synchronize the File Object */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_sync ( - FIL *fp /* Pointer to the file object */ -) -{ - FRESULT res; - DWORD tim; - BYTE *dir; - - - res = validate(fp->fs, fp->id); /* Check validity of the object */ - if (res == FR_OK) { - if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ -#if !_FS_TINY /* Write-back dirty buffer */ - if (fp->flag & FA__DIRTY) { - if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) - LEAVE_FF(fp->fs, FR_DISK_ERR); - fp->flag &= ~FA__DIRTY; - } -#endif - /* Update the directory entry */ - res = move_window(fp->fs, fp->dir_sect); - if (res == FR_OK) { - dir = fp->dir_ptr; - dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ - ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */ - ST_CLUST(dir, fp->sclust); /* Update start cluster */ - tim = get_fattime(); /* Update updated time */ - ST_DWORD(dir+DIR_WrtTime, tim); - fp->flag &= ~FA__WRITTEN; - fp->fs->wflag = 1; - res = sync(fp->fs); - } - } - } - - LEAVE_FF(fp->fs, res); -} - -#endif /* !_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* Close File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_close ( - FIL *fp /* Pointer to the file object to be closed */ -) -{ - FRESULT res; - -#if _FS_READONLY - FATFS *fs = fp->fs; - res = validate(fs, fp->id); - if (res == FR_OK) fp->fs = 0; /* Discard file object */ - LEAVE_FF(fs, res); - -#else - res = f_sync(fp); /* Flush cached data */ -#if _FS_SHARE - if (res == FR_OK) { /* Decrement open counter */ -#if _FS_REENTRANT - res = validate(fp->fs, fp->id); - if (res == FR_OK) { - res = dec_lock(fp->lockid); - unlock_fs(fp->fs, FR_OK); - } -#else - res = dec_lock(fp->lockid); -#endif - } -#endif - if (res == FR_OK) fp->fs = 0; /* Discard file object */ - return res; -#endif -} - - - - -/*-----------------------------------------------------------------------*/ -/* Current Drive/Directory Handlings */ -/*-----------------------------------------------------------------------*/ - -#if _FS_RPATH >= 1 - -FRESULT f_chdrive ( - BYTE drv /* Drive number */ -) -{ - if (drv >= _VOLUMES) return FR_INVALID_DRIVE; - - CurrVol = drv; - - return FR_OK; -} - - - -FRESULT f_chdir ( - const TCHAR *path /* Pointer to the directory path */ -) -{ - FRESULT res; - DIR dj; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 0); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the path */ - FREE_BUF(); - if (res == FR_OK) { /* Follow completed */ - if (!dj.dir) { - dj.fs->cdir = dj.sclust; /* Start directory itself */ - } else { - if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */ - dj.fs->cdir = LD_CLUST(dj.dir); - else - res = FR_NO_PATH; /* Reached but a file */ - } - } - if (res == FR_NO_FILE) res = FR_NO_PATH; - } - - LEAVE_FF(dj.fs, res); -} - - -#if _FS_RPATH >= 2 -FRESULT f_getcwd ( - TCHAR *path, /* Pointer to the directory path */ - UINT sz_path /* Size of path */ -) -{ - FRESULT res; - DIR dj; - UINT i, n; - DWORD ccl; - TCHAR *tp; - FILINFO fno; - DEF_NAMEBUF; - - - *path = 0; - res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */ - if (res == FR_OK) { - INIT_BUF(dj); - i = sz_path; /* Bottom of buffer (dir stack base) */ - dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */ - while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */ - res = dir_sdi(&dj, 1); /* Get parent dir */ - if (res != FR_OK) break; - res = dir_read(&dj); - if (res != FR_OK) break; - dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */ - res = dir_sdi(&dj, 0); - if (res != FR_OK) break; - do { /* Find the entry links to the child dir */ - res = dir_read(&dj); - if (res != FR_OK) break; - if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */ - res = dir_next(&dj, 0); - } while (res == FR_OK); - if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */ - if (res != FR_OK) break; -#if _USE_LFN - fno.lfname = path; - fno.lfsize = i; -#endif - get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */ - tp = fno.fname; - if (_USE_LFN && *path) tp = path; - for (n = 0; tp[n]; n++) ; - if (i < n + 3) { - res = FR_NOT_ENOUGH_CORE; break; - } - while (n) path[--i] = tp[--n]; - path[--i] = '/'; - } - tp = path; - if (res == FR_OK) { - *tp++ = '0' + CurrVol; /* Put drive number */ - *tp++ = ':'; - if (i == sz_path) { /* Root-dir */ - *tp++ = '/'; - } else { /* Sub-dir */ - do /* Add stacked path str */ - *tp++ = path[i++]; - while (i < sz_path); - } - } - *tp = 0; - FREE_BUF(); - } - - LEAVE_FF(dj.fs, res); -} -#endif /* _FS_RPATH >= 2 */ -#endif /* _FS_RPATH >= 1 */ - - - -#if _FS_MINIMIZE <= 2 -/*-----------------------------------------------------------------------*/ -/* Seek File R/W Pointer */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_lseek ( - FIL *fp, /* Pointer to the file object */ - DWORD ofs /* File pointer from top of file */ -) -{ - FRESULT res; - - - res = validate(fp->fs, fp->id); /* Check validity of the object */ - if (res != FR_OK) LEAVE_FF(fp->fs, res); - if (fp->flag & FA__ERROR) /* Check abort flag */ - LEAVE_FF(fp->fs, FR_INT_ERR); - -#if _USE_FASTSEEK - if (fp->cltbl) { /* Fast seek */ - DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; - - if (ofs == CREATE_LINKMAP) { /* Create CLMT */ - tbl = fp->cltbl; - tlen = *tbl++; ulen = 2; /* Given table size and required table size */ - cl = fp->sclust; /* Top of the chain */ - if (cl) { - do { - /* Get a fragment */ - tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */ - do { - pcl = cl; ncl++; - cl = get_fat(fp->fs, cl); - if (cl <= 1) ABORT(fp->fs, FR_INT_ERR); - if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - } while (cl == pcl + 1); - if (ulen <= tlen) { /* Store the length and top of the fragment */ - *tbl++ = ncl; *tbl++ = tcl; - } - } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */ - } - *fp->cltbl = ulen; /* Number of items used */ - if (ulen <= tlen) - *tbl = 0; /* Terminate table */ - else - res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */ - - } else { /* Fast seek */ - if (ofs > fp->fsize) /* Clip offset at the file size */ - ofs = fp->fsize; - fp->fptr = ofs; /* Set file pointer */ - if (ofs) { - fp->clust = clmt_clust(fp, ofs - 1); - dsc = clust2sect(fp->fs, fp->clust); - if (!dsc) ABORT(fp->fs, FR_INT_ERR); - dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1); - if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */ -#if !_FS_TINY -#if !_FS_READONLY - if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); - fp->flag &= ~FA__DIRTY; - } -#endif - if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */ - ABORT(fp->fs, FR_DISK_ERR); -#endif - fp->dsect = dsc; - } - } - } - } else -#endif - - /* Normal Seek */ - { - DWORD clst, bcs, nsect, ifptr; - - if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ -#if !_FS_READONLY - && !(fp->flag & FA_WRITE) -#endif - ) ofs = fp->fsize; - - ifptr = fp->fptr; - fp->fptr = nsect = 0; - if (ofs) { - bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ - if (ifptr > 0 && - (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ - fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ - ofs -= fp->fptr; - clst = fp->clust; - } else { /* When seek to back cluster, */ - clst = fp->sclust; /* start from the first cluster */ -#if !_FS_READONLY - if (clst == 0) { /* If no cluster chain, create a new chain */ - clst = create_chain(fp->fs, 0); - if (clst == 1) ABORT(fp->fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - fp->sclust = clst; - } -#endif - fp->clust = clst; - } - if (clst != 0) { - while (ofs > bcs) { /* Cluster following loop */ -#if !_FS_READONLY - if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ - clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ - if (clst == 0) { /* When disk gets full, clip file size */ - ofs = bcs; break; - } - } else -#endif - clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ - if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR); - fp->clust = clst; - fp->fptr += bcs; - ofs -= bcs; - } - fp->fptr += ofs; - if (ofs % SS(fp->fs)) { - nsect = clust2sect(fp->fs, clst); /* Current sector */ - if (!nsect) ABORT(fp->fs, FR_INT_ERR); - nsect += ofs / SS(fp->fs); - } - } - } - if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */ -#if !_FS_TINY -#if !_FS_READONLY - if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) - ABORT(fp->fs, FR_DISK_ERR); - fp->flag &= ~FA__DIRTY; - } -#endif - if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */ - ABORT(fp->fs, FR_DISK_ERR); -#endif - fp->dsect = nsect; - } -#if !_FS_READONLY - if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */ - fp->fsize = fp->fptr; - fp->flag |= FA__WRITTEN; - } -#endif - } - - LEAVE_FF(fp->fs, res); -} - - - -#if _FS_MINIMIZE <= 1 -/*-----------------------------------------------------------------------*/ -/* Create a Directroy Object */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_opendir ( - DIR *dj, /* Pointer to directory object to create */ - const TCHAR *path /* Pointer to the directory path */ -) -{ - FRESULT res; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj->fs, 0); - if (res == FR_OK) { - INIT_BUF(*dj); - res = follow_path(dj, path); /* Follow the path to the directory */ - FREE_BUF(); - if (res == FR_OK) { /* Follow completed */ - if (dj->dir) { /* It is not the root dir */ - if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */ - dj->sclust = LD_CLUST(dj->dir); - } else { /* The object is not a directory */ - res = FR_NO_PATH; - } - } - if (res == FR_OK) { - dj->id = dj->fs->id; - res = dir_sdi(dj, 0); /* Rewind dir */ - } - } - if (res == FR_NO_FILE) res = FR_NO_PATH; - } - - LEAVE_FF(dj->fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Read Directory Entry in Sequense */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_readdir ( - DIR *dj, /* Pointer to the open directory object */ - FILINFO *fno /* Pointer to file information to return */ -) -{ - FRESULT res; - DEF_NAMEBUF; - - - res = validate(dj->fs, dj->id); /* Check validity of the object */ - if (res == FR_OK) { - if (!fno) { - res = dir_sdi(dj, 0); /* Rewind the directory object */ - } else { - INIT_BUF(*dj); - res = dir_read(dj); /* Read an directory item */ - if (res == FR_NO_FILE) { /* Reached end of dir */ - dj->sect = 0; - res = FR_OK; - } - if (res == FR_OK) { /* A valid entry is found */ - get_fileinfo(dj, fno); /* Get the object information */ - res = dir_next(dj, 0); /* Increment index for next */ - if (res == FR_NO_FILE) { - dj->sect = 0; - res = FR_OK; - } - } - FREE_BUF(); - } - } - - LEAVE_FF(dj->fs, res); -} - -FRESULT f_seekdir( - DIR *dj, /* Pointer to the open directory object */ - int offset /* the seek offset */ -) -{ - return dir_sdi(dj, offset); /* seek directory index to offset */ -} - - -#if _FS_MINIMIZE == 0 -/*-----------------------------------------------------------------------*/ -/* Get File Status */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_stat ( - const TCHAR *path, /* Pointer to the file path */ - FILINFO *fno /* Pointer to file information to return */ -) -{ - FRESULT res; - DIR dj; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 0); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK) { /* Follow completed */ - if (dj.dir) /* Found an object */ - get_fileinfo(&dj, fno); - else /* It is root dir */ - res = FR_INVALID_NAME; - } - FREE_BUF(); - } - - LEAVE_FF(dj.fs, res); -} - - - -#if !_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Get Number of Free Clusters */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_getfree ( - const TCHAR *path, /* Pointer to the logical drive number (root dir) */ - DWORD *nclst, /* Pointer to the variable to return number of free clusters */ - FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */ -) -{ - FRESULT res; - DWORD n, clst, sect, stat; - UINT i; - BYTE fat, *p; - - - /* Get drive number */ - res = chk_mounted(&path, fatfs, 0); - if (res == FR_OK) { - /* If free_clust is valid, return it without full cluster scan */ - if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) { - *nclst = (*fatfs)->free_clust; - } else { - /* Get number of free clusters */ - fat = (*fatfs)->fs_type; - n = 0; - if (fat == FS_FAT12) { - clst = 2; - do { - stat = get_fat(*fatfs, clst); - if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } - if (stat == 1) { res = FR_INT_ERR; break; } - if (stat == 0) n++; - } while (++clst < (*fatfs)->n_fatent); - } else { - clst = (*fatfs)->n_fatent; - sect = (*fatfs)->fatbase; - i = 0; p = 0; - do { - if (!i) { - res = move_window(*fatfs, sect++); - if (res != FR_OK) break; - p = (*fatfs)->win; - i = SS(*fatfs); - } - if (fat == FS_FAT16) { - if (LD_WORD(p) == 0) n++; - p += 2; i -= 2; - } else { - if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++; - p += 4; i -= 4; - } - } while (--clst); - } - (*fatfs)->free_clust = n; - if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1; - *nclst = n; - } - } - LEAVE_FF(*fatfs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Truncate File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_truncate ( - FIL *fp /* Pointer to the file object */ -) -{ - FRESULT res; - DWORD ncl; - - - res = validate(fp->fs, fp->id); /* Check validity of the object */ - if (res == FR_OK) { - if (fp->flag & FA__ERROR) { /* Check abort flag */ - res = FR_INT_ERR; - } else { - if (!(fp->flag & FA_WRITE)) /* Check access mode */ - res = FR_DENIED; - } - } - if (res == FR_OK) { - if (fp->fsize > fp->fptr) { - fp->fsize = fp->fptr; /* Set file size to current R/W point */ - fp->flag |= FA__WRITTEN; - if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ - res = remove_chain(fp->fs, fp->sclust); - fp->sclust = 0; - } else { /* When truncate a part of the file, remove remaining clusters */ - ncl = get_fat(fp->fs, fp->clust); - res = FR_OK; - if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; - if (ncl == 1) res = FR_INT_ERR; - if (res == FR_OK && ncl < fp->fs->n_fatent) { - res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF); - if (res == FR_OK) res = remove_chain(fp->fs, ncl); - } - } - } - if (res != FR_OK) fp->flag |= FA__ERROR; - } - - LEAVE_FF(fp->fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Delete a File or Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_unlink ( - const TCHAR *path /* Pointer to the file or directory path */ -) -{ - FRESULT res; - DIR dj, sdj; - BYTE *dir; - DWORD dclst; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 1); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the file path */ - if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) - res = FR_INVALID_NAME; /* Cannot remove dot entry */ -#if _FS_SHARE - if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */ -#endif - if (res == FR_OK) { /* The object is accessible */ - dir = dj.dir; - if (!dir) { - res = FR_INVALID_NAME; /* Cannot remove the start directory */ - } else { - if (dir[DIR_Attr] & AM_RDO) - res = FR_DENIED; /* Cannot remove R/O object */ - } - dclst = LD_CLUST(dir); - if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */ - if (dclst < 2) { - res = FR_INT_ERR; - } else { - mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */ - sdj.sclust = dclst; - res = dir_sdi(&sdj, 2); /* Exclude dot entries */ - if (res == FR_OK) { - res = dir_read(&sdj); - if (res == FR_OK /* Not empty dir */ -#if _FS_RPATH - || dclst == sdj.fs->cdir /* Current dir */ -#endif - ) res = FR_DENIED; - if (res == FR_NO_FILE) res = FR_OK; /* Empty */ - } - } - } - if (res == FR_OK) { - res = dir_remove(&dj); /* Remove the directory entry */ - if (res == FR_OK) { - if (dclst) /* Remove the cluster chain if exist */ - res = remove_chain(dj.fs, dclst); - if (res == FR_OK) res = sync(dj.fs); - } - } - } - FREE_BUF(); - } - LEAVE_FF(dj.fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Create a Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_mkdir ( - const TCHAR *path /* Pointer to the directory path */ -) -{ - FRESULT res; - DIR dj; - BYTE *dir, n; - DWORD dsc, dcl, pcl, tim = get_fattime(); - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 1); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */ - if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT)) - res = FR_INVALID_NAME; - if (res == FR_NO_FILE) { /* Can create a new directory */ - dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */ - res = FR_OK; - if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ - if (dcl == 1) res = FR_INT_ERR; - if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; - if (res == FR_OK) /* Flush FAT */ - res = move_window(dj.fs, 0); - if (res == FR_OK) { /* Initialize the new directory table */ - dsc = clust2sect(dj.fs, dcl); - dir = dj.fs->win; - mem_set(dir, 0, SS(dj.fs)); - mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */ - dir[DIR_Name] = '.'; - dir[DIR_Attr] = AM_DIR; - ST_DWORD(dir+DIR_WrtTime, tim); - ST_CLUST(dir, dcl); - mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */ - dir[33] = '.'; pcl = dj.sclust; - if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase) - pcl = 0; - ST_CLUST(dir+SZ_DIR, pcl); - for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */ - dj.fs->winsect = dsc++; - dj.fs->wflag = 1; - res = move_window(dj.fs, 0); - if (res != FR_OK) break; - mem_set(dir, 0, SS(dj.fs)); - } - } - if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */ - if (res != FR_OK) { - remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */ - } else { - dir = dj.dir; - dir[DIR_Attr] = AM_DIR; /* Attribute */ - ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */ - ST_CLUST(dir, dcl); /* Table start cluster */ - dj.fs->wflag = 1; - res = sync(dj.fs); - } - } - FREE_BUF(); - } - - LEAVE_FF(dj.fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Change Attribute */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_chmod ( - const TCHAR *path, /* Pointer to the file path */ - BYTE value, /* Attribute bits */ - BYTE mask /* Attribute mask to change */ -) -{ - FRESULT res; - DIR dj; - BYTE *dir; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 1); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the file path */ - FREE_BUF(); - if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) - res = FR_INVALID_NAME; - if (res == FR_OK) { - dir = dj.dir; - if (!dir) { /* Is it a root directory? */ - res = FR_INVALID_NAME; - } else { /* File or sub directory */ - mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ - dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ - dj.fs->wflag = 1; - res = sync(dj.fs); - } - } - } - - LEAVE_FF(dj.fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Change Timestamp */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_utime ( - const TCHAR *path, /* Pointer to the file/directory name */ - const FILINFO *fno /* Pointer to the time stamp to be set */ -) -{ - FRESULT res; - DIR dj; - BYTE *dir; - DEF_NAMEBUF; - - - res = chk_mounted(&path, &dj.fs, 1); - if (res == FR_OK) { - INIT_BUF(dj); - res = follow_path(&dj, path); /* Follow the file path */ - FREE_BUF(); - if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) - res = FR_INVALID_NAME; - if (res == FR_OK) { - dir = dj.dir; - if (!dir) { /* Root directory */ - res = FR_INVALID_NAME; - } else { /* File or sub-directory */ - ST_WORD(dir+DIR_WrtTime, fno->ftime); - ST_WORD(dir+DIR_WrtDate, fno->fdate); - dj.fs->wflag = 1; - res = sync(dj.fs); - } - } - } - - LEAVE_FF(dj.fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Rename File/Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_rename ( - const TCHAR *path_old, /* Pointer to the old name */ - const TCHAR *path_new /* Pointer to the new name */ -) -{ - FRESULT res; - DIR djo, djn; - BYTE buf[21], *dir; - DWORD dw; - DEF_NAMEBUF; - - - res = chk_mounted(&path_old, &djo.fs, 1); - if (res == FR_OK) { - djn.fs = djo.fs; - INIT_BUF(djo); - res = follow_path(&djo, path_old); /* Check old object */ - if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT)) - res = FR_INVALID_NAME; -#if _FS_SHARE - if (res == FR_OK) res = chk_lock(&djo, 2); -#endif - if (res == FR_OK) { /* Old object is found */ - if (!djo.dir) { /* Is root dir? */ - res = FR_NO_FILE; - } else { - mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */ - mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */ - res = follow_path(&djn, path_new); - if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */ - if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */ -/* Start critical section that any interruption or error can cause cross-link */ - res = dir_register(&djn); /* Register the new entry */ - if (res == FR_OK) { - dir = djn.dir; /* Copy object information except for name */ - mem_cpy(dir+13, buf+2, 19); - dir[DIR_Attr] = buf[0] | AM_ARC; - djo.fs->wflag = 1; - if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */ - dw = clust2sect(djn.fs, LD_CLUST(dir)); - if (!dw) { - res = FR_INT_ERR; - } else { - res = move_window(djn.fs, dw); - dir = djn.fs->win+SZ_DIR; /* .. entry */ - if (res == FR_OK && dir[1] == '.') { - dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust; - ST_CLUST(dir, dw); - djn.fs->wflag = 1; - } - } - } - if (res == FR_OK) { - res = dir_remove(&djo); /* Remove old entry */ - if (res == FR_OK) - res = sync(djo.fs); - } - } -/* End critical section */ - } - } - } - FREE_BUF(); - } - LEAVE_FF(djo.fs, res); -} - -#endif /* !_FS_READONLY */ -#endif /* _FS_MINIMIZE == 0 */ -#endif /* _FS_MINIMIZE <= 1 */ -#endif /* _FS_MINIMIZE <= 2 */ - - - -/*-----------------------------------------------------------------------*/ -/* Forward data to the stream directly (available on only tiny cfg) */ -/*-----------------------------------------------------------------------*/ -#if _USE_FORWARD && _FS_TINY - -FRESULT f_forward ( - FIL *fp, /* Pointer to the file object */ - UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ - UINT btr, /* Number of bytes to forward */ - UINT *bf /* Pointer to number of bytes forwarded */ -) -{ - FRESULT res; - DWORD remain, clst, sect; - UINT rcnt; - BYTE csect; - - - *bf = 0; /* Initialize byte counter */ - - res = validate(fp->fs, fp->id); /* Check validity of the object */ - if (res != FR_OK) LEAVE_FF(fp->fs, res); - if (fp->flag & FA__ERROR) /* Check error flag */ - LEAVE_FF(fp->fs, FR_INT_ERR); - if (!(fp->flag & FA_READ)) /* Check access mode */ - LEAVE_FF(fp->fs, FR_DENIED); - - remain = fp->fsize - fp->fptr; - if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ - - for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */ - fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) { - csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ - if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ - if (!csect) { /* On the cluster boundary? */ - clst = (fp->fptr == 0) ? /* On the top of the file? */ - fp->sclust : get_fat(fp->fs, fp->clust); - if (clst <= 1) ABORT(fp->fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - } - } - sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */ - if (!sect) ABORT(fp->fs, FR_INT_ERR); - sect += csect; - if (move_window(fp->fs, sect)) /* Move sector window */ - ABORT(fp->fs, FR_DISK_ERR); - fp->dsect = sect; - rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */ - if (rcnt > btr) rcnt = btr; - rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt); - if (!rcnt) ABORT(fp->fs, FR_INT_ERR); - } - - LEAVE_FF(fp->fs, FR_OK); -} -#endif /* _USE_FORWARD */ - - - -#if _USE_MKFS && !_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Create File System on the Drive */ -/*-----------------------------------------------------------------------*/ -#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */ -#define N_FATS 1 /* Number of FAT copies (1 or 2) */ - - -FRESULT f_mkfs ( - BYTE drv, /* Logical drive number */ - BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */ - UINT au /* Allocation unit size [bytes] */ -) -{ - static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0}; - static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512}; - BYTE fmt, md, *tbl; - DWORD n_clst, vs, n, wsect; - UINT i; - DWORD b_vol, b_fat, b_dir, b_data; /* Offset (LBA) */ - DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */ - FATFS *fs; - DSTATUS stat; - - - /* Check mounted drive and clear work area */ - if (drv >= _VOLUMES) return FR_INVALID_DRIVE; - fs = FatFs[drv]; - if (!fs) return FR_NOT_ENABLED; - fs->fs_type = 0; - drv = LD2PD(drv); - - /* Get disk statics */ - stat = disk_initialize(drv); - if (stat & STA_NOINIT) return FR_NOT_READY; - if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; -#if _MAX_SS != 512 /* Get disk sector size */ - if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) - return FR_DISK_ERR; -#endif - if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128) - return FR_DISK_ERR; - b_vol = (sfd) ? 0 : 63; /* Volume start sector */ - n_vol -= b_vol; - if (au & (au - 1)) au = 0; /* Check validity of the AU size */ - if (!au) { /* AU auto selection */ - vs = n_vol / (2000 / (SS(fs) / 512)); - for (i = 0; vs < vst[i]; i++) ; - au = cst[i]; - } - au /= SS(fs); /* Number of sectors per cluster */ - if (au == 0) au = 1; - if (au > 128) au = 128; - - /* Pre-compute number of clusters and FAT syb-type */ - n_clst = n_vol / au; - fmt = FS_FAT12; - if (n_clst >= MIN_FAT16) fmt = FS_FAT16; - if (n_clst >= MIN_FAT32) fmt = FS_FAT32; - - /* Determine offset and size of FAT structure */ - if (fmt == FS_FAT32) { - n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs); - n_rsv = 32; - n_dir = 0; - } else { - n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4; - n_fat = (n_fat + SS(fs) - 1) / SS(fs); - n_rsv = 1; - n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs); - } - b_fat = b_vol + n_rsv; /* FAT area start sector */ - b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */ - b_data = b_dir + n_dir; /* Data area start sector */ - if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */ - - /* Align data start sector to erase block boundary (for flash memory media) */ - if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1; - n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */ - n = (n - b_data) / N_FATS; - if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */ - n_rsv += n; - b_fat += n; - } else { /* FAT12/16: Expand FAT size */ - n_fat += n; - } - - /* Determine number of clusters and final check of validity of the FAT sub-type */ - n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au; - if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16) - || (fmt == FS_FAT32 && n_clst < MIN_FAT32)) - return FR_MKFS_ABORTED; - - /* Create partition table if required */ - if (sfd) { /* No patition table (SFD) */ - md = 0xF0; - } else { /* With patition table (FDISK) */ - DWORD n_disk = b_vol + n_vol; - - mem_set(fs->win, 0, SS(fs)); - tbl = fs->win+MBR_Table; - ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */ - if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */ - n_disk = n_disk / 63 / 255; - tbl[7] = (BYTE)n_disk; - tbl[6] = (BYTE)((n_disk >> 2) | 63); - } else { - ST_WORD(&tbl[6], 0xFFFF); /* CHS saturated */ - } - tbl[5] = 254; - if (fmt != FS_FAT32) /* System ID */ - tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06; - else - tbl[4] = 0x0c; - ST_DWORD(tbl+8, 63); /* Partition start in LBA */ - ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */ - ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */ - if (disk_write(drv, fs->win, 0, 1) != RES_OK) /* Put the MBR into first physical sector */ - return FR_DISK_ERR; - md = 0xF8; - } - - /* Create volume boot record */ - tbl = fs->win; /* Clear sector */ - mem_set(tbl, 0, SS(fs)); - mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */ - i = SS(fs); /* Sector size */ - ST_WORD(tbl+BPB_BytsPerSec, i); - tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */ - ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */ - tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */ - i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */ - ST_WORD(tbl+BPB_RootEntCnt, i); - if (n_vol < 0x10000) { /* Number of total sectors */ - ST_WORD(tbl+BPB_TotSec16, n_vol); - } else { - ST_DWORD(tbl+BPB_TotSec32, n_vol); - } - tbl[BPB_Media] = md; /* Media descriptor */ - ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */ - ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */ - ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */ - n = get_fattime(); /* Use current time as VSN */ - if (fmt == FS_FAT32) { - ST_DWORD(tbl+BS_VolID32, n); /* VSN */ - ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */ - ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */ - ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */ - ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */ - tbl[BS_DrvNum32] = 0x80; /* Drive number */ - tbl[BS_BootSig32] = 0x29; /* Extended boot signature */ - mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */ - } else { - ST_DWORD(tbl+BS_VolID, n); /* VSN */ - ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */ - tbl[BS_DrvNum] = 0x80; /* Drive number */ - tbl[BS_BootSig] = 0x29; /* Extended boot signature */ - mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */ - } - ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */ - if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Write VBR */ - return FR_DISK_ERR; - if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */ - disk_write(drv, tbl, b_vol + 6, 1); - - /* Initialize FAT area */ - wsect = b_fat; - for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */ - mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */ - n = md; /* Media descriptor byte */ - if (fmt != FS_FAT32) { - n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00; - ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */ - } else { - n |= 0xFFFFFF00; - ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */ - ST_DWORD(tbl+4, 0xFFFFFFFF); - ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */ - } - if (disk_write(drv, tbl, wsect++, 1) != RES_OK) - return FR_DISK_ERR; - mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */ - for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */ - if (disk_write(drv, tbl, wsect++, 1) != RES_OK) - return FR_DISK_ERR; - } - } - - /* Initialize root directory */ - i = (fmt == FS_FAT32) ? au : n_dir; - do { - if (disk_write(drv, tbl, wsect++, 1) != RES_OK) - return FR_DISK_ERR; - } while (--i); - -#if _USE_ERASE /* Erase data area if needed */ - { - DWORD eb[2]; - - eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1; - disk_ioctl(drv, CTRL_ERASE_SECTOR, eb); - } -#endif - - /* Create FSInfo if needed */ - if (fmt == FS_FAT32) { - ST_DWORD(tbl+FSI_LeadSig, 0x41615252); - ST_DWORD(tbl+FSI_StrucSig, 0x61417272); - ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */ - ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */ - ST_WORD(tbl+BS_55AA, 0xAA55); - disk_write(drv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */ - disk_write(drv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */ - } - - return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR; -} - -#endif /* _USE_MKFS && !_FS_READONLY */ - - - - -#if _USE_STRFUNC -/*-----------------------------------------------------------------------*/ -/* Get a string from the file */ -/*-----------------------------------------------------------------------*/ -TCHAR* f_gets ( - TCHAR* buff, /* Pointer to the string buffer to read */ - int len, /* Size of string buffer (characters) */ - FIL* fil /* Pointer to the file object */ -) -{ - int n = 0; - TCHAR c, *p = buff; - BYTE s[2]; - UINT rc; - - - while (n < len - 1) { /* Read bytes until buffer gets filled */ - f_read(fil, s, 1, &rc); - if (rc != 1) break; /* Break on EOF or error */ - c = s[0]; -#if _LFN_UNICODE /* Read a character in UTF-8 encoding */ - if (c >= 0x80) { - if (c < 0xC0) continue; /* Skip stray trailer */ - if (c < 0xE0) { /* Two-byte sequense */ - f_read(fil, s, 1, &rc); - if (rc != 1) break; - c = ((c & 0x1F) << 6) | (s[0] & 0x3F); - if (c < 0x80) c = '?'; - } else { - if (c < 0xF0) { /* Three-byte sequense */ - f_read(fil, s, 2, &rc); - if (rc != 2) break; - c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F); - if (c < 0x800) c = '?'; - } else { /* Reject four-byte sequense */ - c = '?'; - } - } - } -#endif -#if _USE_STRFUNC >= 2 - if (c == '\r') continue; /* Strip '\r' */ -#endif - *p++ = c; - n++; - if (c == '\n') break; /* Break on EOL */ - } - *p = 0; - return n ? buff : 0; /* When no data read (eof or error), return with error. */ -} - - - -#if !_FS_READONLY -#include -/*-----------------------------------------------------------------------*/ -/* Put a character to the file */ -/*-----------------------------------------------------------------------*/ -int f_putc ( - TCHAR c, /* A character to be output */ - FIL* fil /* Pointer to the file object */ -) -{ - UINT bw, btw; - BYTE s[3]; - - -#if _USE_STRFUNC >= 2 - if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */ -#endif - -#if _LFN_UNICODE /* Write the character in UTF-8 encoding */ - if (c < 0x80) { /* 7-bit */ - s[0] = (BYTE)c; - btw = 1; - } else { - if (c < 0x800) { /* 11-bit */ - s[0] = (BYTE)(0xC0 | (c >> 6)); - s[1] = (BYTE)(0x80 | (c & 0x3F)); - btw = 2; - } else { /* 16-bit */ - s[0] = (BYTE)(0xE0 | (c >> 12)); - s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F)); - s[2] = (BYTE)(0x80 | (c & 0x3F)); - btw = 3; - } - } -#else /* Write the character without conversion */ - s[0] = (BYTE)c; - btw = 1; -#endif - f_write(fil, s, btw, &bw); /* Write the char to the file */ - return (bw == btw) ? 1 : EOF; /* Return the result */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* Put a string to the file */ -/*-----------------------------------------------------------------------*/ -int f_puts ( - const TCHAR* str, /* Pointer to the string to be output */ - FIL* fil /* Pointer to the file object */ -) -{ - int n; - - - for (n = 0; *str; str++, n++) { - if (f_putc(*str, fil) == EOF) return EOF; - } - return n; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Put a formatted string to the file */ -/*-----------------------------------------------------------------------*/ -int f_printf ( - FIL* fil, /* Pointer to the file object */ - const TCHAR* str, /* Pointer to the format string */ - ... /* Optional arguments... */ -) -{ - va_list arp; - BYTE f, r; - UINT i, j, w; - ULONG v; - TCHAR c, d, s[16], *p; - int res, cc; - - - va_start(arp, str); - - for (cc = res = 0; cc != EOF; res += cc) { - c = *str++; - if (c == 0) break; /* End of string */ - if (c != '%') { /* Non escape character */ - cc = f_putc(c, fil); - if (cc != EOF) cc = 1; - continue; - } - w = f = 0; - c = *str++; - if (c == '0') { /* Flag: '0' padding */ - f = 1; c = *str++; - } else { - if (c == '-') { /* Flag: left justified */ - f = 2; c = *str++; - } - } - while (IsDigit(c)) { /* Precision */ - w = w * 10 + c - '0'; - c = *str++; - } - if (c == 'l' || c == 'L') { /* Prefix: Size is long int */ - f |= 4; c = *str++; - } - if (!c) break; - d = c; - if (IsLower(d)) d -= 0x20; - switch (d) { /* Type is... */ - case 'S' : /* String */ - p = va_arg(arp, TCHAR*); - for (j = 0; p[j]; j++) ; - res = 0; - while (!(f & 2) && j++ < w) res += (cc = f_putc(' ', fil)); - res += (cc = f_puts(p, fil)); - while (j++ < w) res += (cc = f_putc(' ', fil)); - if (cc != EOF) cc = res; - continue; - case 'C' : /* Character */ - cc = f_putc((TCHAR)va_arg(arp, int), fil); continue; - case 'B' : /* Binary */ - r = 2; break; - case 'O' : /* Octal */ - r = 8; break; - case 'D' : /* Signed decimal */ - case 'U' : /* Unsigned decimal */ - r = 10; break; - case 'X' : /* Hexdecimal */ - r = 16; break; - default: /* Unknown type (passthrough) */ - cc = f_putc(c, fil); continue; - } - - /* Get an argument and put it in numeral */ - v = (f & 4) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int)); - if (d == 'D' && (v & 0x80000000)) { - v = 0 - v; - f |= 8; - } - i = 0; - do { - d = (TCHAR)(v % r); v /= r; - if (d > 9) d += (c == 'x') ? 0x27 : 0x07; - s[i++] = d + '0'; - } while (v && i < sizeof(s) / sizeof(s[0])); - if (f & 8) s[i++] = '-'; - j = i; d = (f & 1) ? '0' : ' '; - res = 0; - while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil)); - do res += (cc = f_putc(s[--i], fil)); while(i); - while (j++ < w) res += (cc = f_putc(' ', fil)); - if (cc != EOF) cc = res; - } - - va_end(arp); - return (cc == EOF) ? cc : res; -} - -#endif /* !_FS_READONLY */ -#endif /* _USE_STRFUNC */ - -#include -#if _VOLUMES > 1 -int elm_get_vol(FATFS *fat) -{ - int vol; - - for (vol = 0; vol < _VOLUMES; vol ++) - { - if (FatFs[vol] == fat) return vol; - } - - return -1; -} -#endif +/*----------------------------------------------------------------------------/ +/ FatFs - FAT file system module R0.08b (C)ChaN, 2011 +/-----------------------------------------------------------------------------/ +/ FatFs module is a generic FAT file system module for small embedded systems. +/ This is a free software that opened for education, research and commercial +/ developments under license policy of following terms. +/ +/ Copyright (C) 2011, ChaN, all right reserved. +/ +/ * The FatFs module is a free software and there is NO WARRANTY. +/ * No restriction on use. You can use, modify and redistribute it for +/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY. +/ * Redistributions of source code must retain the above copyright notice. +/ +/-----------------------------------------------------------------------------/ +/ Feb 26,'06 R0.00 Prototype. +/ +/ Apr 29,'06 R0.01 First stable version. +/ +/ Jun 01,'06 R0.02 Added FAT12 support. +/ Removed unbuffered mode. +/ Fixed a problem on small (<32M) partition. +/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). +/ +/ Sep 22,'06 R0.03 Added f_rename(). +/ Changed option _FS_MINIMUM to _FS_MINIMIZE. +/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast. +/ Fixed f_mkdir() creates incorrect directory on FAT32. +/ +/ Feb 04,'07 R0.04 Supported multiple drive system. +/ Changed some interfaces for multiple drive system. +/ Changed f_mountdrv() to f_mount(). +/ Added f_mkfs(). +/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive. +/ Added a capability of extending file size to f_lseek(). +/ Added minimization level 3. +/ Fixed an endian sensitive code in f_mkfs(). +/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. +/ Added FSInfo support. +/ Fixed DBCS name can result FR_INVALID_NAME. +/ Fixed short seek (<= csize) collapses the file object. +/ +/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). +/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo. +/ Fixed f_mkdir() on FAT32 creates incorrect directory. +/ Feb 03,'08 R0.05a Added f_truncate() and f_utime(). +/ Fixed off by one error at FAT sub-type determination. +/ Fixed btr in f_read() can be mistruncated. +/ Fixed cached sector is not flushed when create and close without write. +/ +/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). +/ Improved performance of f_lseek() on moving to the same or following cluster. +/ +/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY) +/ Added long file name feature. +/ Added multiple code page feature. +/ Added re-entrancy for multitask operation. +/ Added auto cluster size selection to f_mkfs(). +/ Added rewind option to f_readdir(). +/ Changed result code of critical errors. +/ Renamed string functions to avoid name collision. +/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg. +/ Added multiple sector size feature. +/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error. +/ Fixed wrong cache control in f_lseek(). +/ Added relative path feature. +/ Added f_chdir() and f_chdrive(). +/ Added proper case conversion to extended char. +/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h. +/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH. +/ Fixed name matching error on the 13 char boundary. +/ Added a configuration option, _LFN_UNICODE. +/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg. +/ +/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3) +/ Added file lock feature. (_FS_SHARE) +/ Added fast seek feature. (_USE_FASTSEEK) +/ Changed some types on the API, XCHAR->TCHAR. +/ Changed fname member in the FILINFO structure on Unicode cfg. +/ String functions support UTF-8 encoding files on Unicode cfg. +/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2) +/ Added sector erase feature. (_USE_ERASE) +/ Moved file lock semaphore table from fs object to the bss. +/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'. +/ Fixed f_mkfs() creates wrong FAT32 volume. +/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write(). +/ f_lseek() reports required table size on creating CLMP. +/ Extended format syntax of f_printf function. +/ Ignores duplicated directory separators in given path names. +/---------------------------------------------------------------------------*/ + +#include "ff.h" /* FatFs configurations and declarations */ +#include "diskio.h" /* Declarations of low level disk I/O functions */ + + +/*-------------------------------------------------------------------------- + + Module Private Definitions + +---------------------------------------------------------------------------*/ + +#if _FATFS != 8237 +#error Wrong include file (ff.h). +#endif + + +/* Definitions on sector size */ +#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096 +#error Wrong sector size. +#endif +#if _MAX_SS != 512 +#define SS(fs) ((fs)->ssize) /* Multiple sector size */ +#else +#define SS(fs) 512U /* Fixed sector size */ +#endif + + +/* Reentrancy related */ +#if _FS_REENTRANT +#if _USE_LFN == 1 +#error Static LFN work area must not be used in re-entrant configuration. +#endif +#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; } +#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; } +#else +#define ENTER_FF(fs) +#define LEAVE_FF(fs, res) return res +#endif + +#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); } + + +/* File shareing feature */ +#if _FS_SHARE +#if _FS_READONLY +#error _FS_SHARE must be 0 on read-only cfg. +#endif +typedef struct { + FATFS *fs; /* File ID 1, volume (NULL:blank entry) */ + DWORD clu; /* File ID 2, directory */ + WORD idx; /* File ID 3, directory index */ + WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */ +} FILESEM; +#endif + + +/* Misc definitions */ +#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO)) +#define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);} + + +/* DBCS code ranges and SBCS extend char conversion table */ + +#if _CODE_PAGE == 932 /* Japanese Shift-JIS */ +#define _DF1S 0x81 /* DBC 1st byte range 1 start */ +#define _DF1E 0x9F /* DBC 1st byte range 1 end */ +#define _DF2S 0xE0 /* DBC 1st byte range 2 start */ +#define _DF2E 0xFC /* DBC 1st byte range 2 end */ +#define _DS1S 0x40 /* DBC 2nd byte range 1 start */ +#define _DS1E 0x7E /* DBC 2nd byte range 1 end */ +#define _DS2S 0x80 /* DBC 2nd byte range 2 start */ +#define _DS2E 0xFC /* DBC 2nd byte range 2 end */ + +#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0x80 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 949 /* Korean */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x41 +#define _DS1E 0x5A +#define _DS2S 0x61 +#define _DS2E 0x7A +#define _DS3S 0x81 +#define _DS3E 0xFE + +#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0xA1 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 437 /* U.S. (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 720 /* Arabic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 737 /* Greek (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \ + 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 775 /* Baltic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF} + +#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \ + 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \ + 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 857 /* Turkish (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 862 /* Hebrew (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 866 /* Russian (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} + +#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ + 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF} + +#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} + +#elif _CODE_PAGE == 1253 /* Greek (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \ + 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF} + +#elif _CODE_PAGE == 1254 /* Turkish (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} + +#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1256 /* Arabic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1257 /* Baltic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} + +#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F} + +#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */ +#if _USE_LFN +#error Cannot use LFN feature without valid code page. +#endif +#define _DF1S 0 + +#else +#error Unknown code page + +#endif + + +/* Character code support macros */ +#define IsUpper(c) (((c)>='A')&&((c)<='Z')) +#define IsLower(c) (((c)>='a')&&((c)<='z')) +#define IsDigit(c) (((c)>='0')&&((c)<='9')) + +#if _DF1S /* Code page is DBCS */ + +#ifdef _DF2S /* Two 1st byte areas */ +#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E)) +#else /* One 1st byte area */ +#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) +#endif + +#ifdef _DS3S /* Three 2nd byte areas */ +#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E)) +#else /* Two 2nd byte areas */ +#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E)) +#endif + +#else /* Code page is SBCS */ + +#define IsDBCS1(c) 0 +#define IsDBCS2(c) 0 + +#endif /* _DF1S */ + + +/* Name status flags */ +#define NS 11 /* Index of name status byte in fn[] */ +#define NS_LOSS 0x01 /* Out of 8.3 format */ +#define NS_LFN 0x02 /* Force to create LFN entry */ +#define NS_LAST 0x04 /* Last segment */ +#define NS_BODY 0x08 /* Lower case flag (body) */ +#define NS_EXT 0x10 /* Lower case flag (ext) */ +#define NS_DOT 0x20 /* Dot entry */ + + +/* FAT sub-type boundaries */ +/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */ +#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */ +#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */ + + +/* FatFs refers the members in the FAT structures as byte array instead of +/ structure member because the structure is not binary compatible between +/ different platforms */ + +#define BS_jmpBoot 0 /* Jump instruction (3) */ +#define BS_OEMName 3 /* OEM name (8) */ +#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */ +#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */ +#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */ +#define BPB_NumFATs 16 /* Number of FAT copies (1) */ +#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */ +#define BPB_TotSec16 19 /* Volume size [sector] (2) */ +#define BPB_Media 21 /* Media descriptor (1) */ +#define BPB_FATSz16 22 /* FAT size [sector] (2) */ +#define BPB_SecPerTrk 24 /* Track size [sector] (2) */ +#define BPB_NumHeads 26 /* Number of heads (2) */ +#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */ +#define BPB_TotSec32 32 /* Volume size [sector] (4) */ +#define BS_DrvNum 36 /* Physical drive number (2) */ +#define BS_BootSig 38 /* Extended boot signature (1) */ +#define BS_VolID 39 /* Volume serial number (4) */ +#define BS_VolLab 43 /* Volume label (8) */ +#define BS_FilSysType 54 /* File system type (1) */ +#define BPB_FATSz32 36 /* FAT size [sector] (4) */ +#define BPB_ExtFlags 40 /* Extended flags (2) */ +#define BPB_FSVer 42 /* File system version (2) */ +#define BPB_RootClus 44 /* Root dir first cluster (4) */ +#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */ +#define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */ +#define BS_DrvNum32 64 /* Physical drive number (2) */ +#define BS_BootSig32 66 /* Extended boot signature (1) */ +#define BS_VolID32 67 /* Volume serial number (4) */ +#define BS_VolLab32 71 /* Volume label (8) */ +#define BS_FilSysType32 82 /* File system type (1) */ +#define FSI_LeadSig 0 /* FSI: Leading signature (4) */ +#define FSI_StrucSig 484 /* FSI: Structure signature (4) */ +#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */ +#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */ +#define MBR_Table 446 /* MBR: Partition table offset (2) */ +#define SZ_PTE 16 /* MBR: Size of a partition table entry */ +#define BS_55AA 510 /* Boot sector signature (2) */ + +#define DIR_Name 0 /* Short file name (11) */ +#define DIR_Attr 11 /* Attribute (1) */ +#define DIR_NTres 12 /* NT flag (1) */ +#define DIR_CrtTime 14 /* Created time (2) */ +#define DIR_CrtDate 16 /* Created date (2) */ +#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */ +#define DIR_WrtTime 22 /* Modified time (2) */ +#define DIR_WrtDate 24 /* Modified date (2) */ +#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */ +#define DIR_FileSize 28 /* File size (4) */ +#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */ +#define LDIR_Attr 11 /* LFN attribute (1) */ +#define LDIR_Type 12 /* LFN type (1) */ +#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */ +#define LDIR_FstClusLO 26 /* Filled by zero (0) */ +#define SZ_DIR 32 /* Size of a directory entry */ +#define LLE 0x40 /* Last long entry flag in LDIR_Ord */ +#define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */ +#define NDDE 0x05 /* Replacement of a character collides with DDE */ + + +/*------------------------------------------------------------*/ +/* Work area */ + +#if _VOLUMES +static +FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */ +#else +#error Number of drives must not be 0. +#endif + +static +WORD Fsid; /* File system mount ID */ + +#if _FS_RPATH +static +BYTE CurrVol; /* Current drive */ +#endif + +#if _FS_SHARE +static +FILESEM Files[_FS_SHARE]; /* File lock semaphores */ +#endif + +#if _USE_LFN == 0 /* No LFN */ +#define DEF_NAMEBUF BYTE sfn[12] +#define INIT_BUF(dobj) (dobj).fn = sfn +#define FREE_BUF() + +#elif _USE_LFN == 1 /* LFN with static LFN working buffer */ +static WCHAR LfnBuf[_MAX_LFN+1]; +#define DEF_NAMEBUF BYTE sfn[12] +#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; } +#define FREE_BUF() + +#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */ +#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1] +#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; } +#define FREE_BUF() + +#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */ +#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn +#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \ + if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \ + (dobj).lfn = lfn; (dobj).fn = sfn; } +#define FREE_BUF() ff_memfree(lfn) + +#else +#error Wrong LFN configuration. +#endif + + + + +/*-------------------------------------------------------------------------- + + Module Private Functions + +---------------------------------------------------------------------------*/ + + +/*-----------------------------------------------------------------------*/ +/* String functions */ +/*-----------------------------------------------------------------------*/ + +/* Copy memory to memory */ +static +void mem_cpy (void* dst, const void* src, UINT cnt) { + BYTE *d = (BYTE*)dst; + const BYTE *s = (const BYTE*)src; + +#if _WORD_ACCESS == 1 + while (cnt >= sizeof(int)) { + *(int*)d = *(int*)s; + d += sizeof(int); s += sizeof(int); + cnt -= sizeof(int); + } +#endif + while (cnt--) + *d++ = *s++; +} + +/* Fill memory */ +static +void mem_set (void* dst, int val, UINT cnt) { + BYTE *d = (BYTE*)dst; + + while (cnt--) + *d++ = (BYTE)val; +} + +/* Compare memory to memory */ +static +int mem_cmp (const void* dst, const void* src, UINT cnt) { + const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; + int r = 0; + + while (cnt-- && (r = *d++ - *s++) == 0) ; + return r; +} + +/* Check if chr is contained in the string */ +static +int chk_chr (const char* str, int chr) { + while (*str && *str != chr) str++; + return *str; +} + + + +/*-----------------------------------------------------------------------*/ +/* Request/Release grant to access the volume */ +/*-----------------------------------------------------------------------*/ +#if _FS_REENTRANT + +static +int lock_fs ( + FATFS *fs /* File system object */ +) +{ + return ff_req_grant(fs->sobj); +} + + +static +void unlock_fs ( + FATFS *fs, /* File system object */ + FRESULT res /* Result code to be returned */ +) +{ + if (res != FR_NOT_ENABLED && + res != FR_INVALID_DRIVE && + res != FR_INVALID_OBJECT && + res != FR_TIMEOUT) { + ff_rel_grant(fs->sobj); + } +} +#endif + + + +/*-----------------------------------------------------------------------*/ +/* File shareing control functions */ +/*-----------------------------------------------------------------------*/ +#if _FS_SHARE + +static +FRESULT chk_lock ( /* Check if the file can be accessed */ + DIR* dj, /* Directory object pointing the file to be checked */ + int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ +) +{ + UINT i, be; + + /* Search file semaphore table */ + for (i = be = 0; i < _FS_SHARE; i++) { + if (Files[i].fs) { /* Existing entry */ + if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */ + Files[i].clu == dj->sclust && + Files[i].idx == dj->index) break; + } else { /* Blank entry */ + be++; + } + } + if (i == _FS_SHARE) /* The file is not opened */ + return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */ + + /* The file has been opened. Reject any open against writing file and all write mode open */ + return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK; +} + + +static +int enq_lock ( /* Check if an entry is available for a new file */ + FATFS* fs /* File system object */ +) +{ + UINT i; + + for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; + return (i == _FS_SHARE) ? 0 : 1; +} + + +static +UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */ + DIR* dj, /* Directory object pointing the file to register or increment */ + int acc /* Desired access mode (0:Read, !0:Write) */ +) +{ + UINT i; + + + for (i = 0; i < _FS_SHARE; i++) { /* Find the file */ + if (Files[i].fs == dj->fs && + Files[i].clu == dj->sclust && + Files[i].idx == dj->index) break; + } + + if (i == _FS_SHARE) { /* Not opened. Register it as new. */ + for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; + if (i == _FS_SHARE) return 0; /* No space to register (int err) */ + Files[i].fs = dj->fs; + Files[i].clu = dj->sclust; + Files[i].idx = dj->index; + Files[i].ctr = 0; + } + + if (acc && Files[i].ctr) return 0; /* Access violation (int err) */ + + Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */ + + return i + 1; +} + + +static +FRESULT dec_lock ( /* Decrement file open counter */ + UINT i /* Semaphore index */ +) +{ + WORD n; + FRESULT res; + + + if (--i < _FS_SHARE) { + n = Files[i].ctr; + if (n == 0x100) n = 0; + if (n) n--; + Files[i].ctr = n; + if (!n) Files[i].fs = 0; + res = FR_OK; + } else { + res = FR_INT_ERR; + } + return res; +} + + +static +void clear_lock ( /* Clear lock entries of the volume */ + FATFS *fs +) +{ + UINT i; + + for (i = 0; i < _FS_SHARE; i++) { + if (Files[i].fs == fs) Files[i].fs = 0; + } +} +#endif + + + +/*-----------------------------------------------------------------------*/ +/* Change window offset */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT move_window ( + FATFS *fs, /* File system object */ + DWORD sector /* Sector number to make appearance in the fs->win[] */ +) /* Move to zero only writes back dirty window */ +{ + DWORD wsect; + + + wsect = fs->winsect; + if (wsect != sector) { /* Changed current window */ +#if !_FS_READONLY + if (fs->wflag) { /* Write back dirty window if needed */ + if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) + return FR_DISK_ERR; + fs->wflag = 0; + if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */ + BYTE nf; + for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */ + wsect += fs->fsize; + disk_write(fs->drv, fs->win, wsect, 1); + } + } + } +#endif + if (sector) { + if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) + return FR_DISK_ERR; + fs->winsect = sector; + } + } + + return FR_OK; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Clean-up cached data */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY +static +FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */ + FATFS *fs /* File system object */ +) +{ + FRESULT res; + + + res = move_window(fs, 0); + if (res == FR_OK) { + /* Update FSInfo sector if needed */ + if (fs->fs_type == FS_FAT32 && fs->fsi_flag) { + fs->winsect = 0; + /* Create FSInfo structure */ + mem_set(fs->win, 0, 512); + ST_WORD(fs->win+BS_55AA, 0xAA55); + ST_DWORD(fs->win+FSI_LeadSig, 0x41615252); + ST_DWORD(fs->win+FSI_StrucSig, 0x61417272); + ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust); + ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust); + /* Write it into the FSInfo sector */ + disk_write(fs->drv, fs->win, fs->fsi_sector, 1); + fs->fsi_flag = 0; + } + /* Make sure that no pending write process in the physical drive */ + if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK) + res = FR_DISK_ERR; + } + + return res; +} +#endif + + + + +/*-----------------------------------------------------------------------*/ +/* Get sector# from cluster# */ +/*-----------------------------------------------------------------------*/ + + +DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ + FATFS *fs, /* File system object */ + DWORD clst /* Cluster# to be converted */ +) +{ + clst -= 2; + if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ + return clst * fs->csize + fs->database; +} + + + + +/*-----------------------------------------------------------------------*/ +/* FAT access - Read value of a FAT entry */ +/*-----------------------------------------------------------------------*/ + + +DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */ + FATFS *fs, /* File system object */ + DWORD clst /* Cluster# to get the link information */ +) +{ + UINT wc, bc; + BYTE *p; + + + if (clst < 2 || clst >= fs->n_fatent) /* Chack range */ + return 1; + + switch (fs->fs_type) { + case FS_FAT12 : + bc = (UINT)clst; bc += bc / 2; + if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; + wc = fs->win[bc % SS(fs)]; bc++; + if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; + wc |= fs->win[bc % SS(fs)] << 8; + return (clst & 1) ? (wc >> 4) : (wc & 0xFFF); + + case FS_FAT16 : + if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break; + p = &fs->win[clst * 2 % SS(fs)]; + return LD_WORD(p); + + case FS_FAT32 : + if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break; + p = &fs->win[clst * 4 % SS(fs)]; + return LD_DWORD(p) & 0x0FFFFFFF; + } + + return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */ +} + + + + +/*-----------------------------------------------------------------------*/ +/* FAT access - Change value of a FAT entry */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY + +FRESULT put_fat ( + FATFS *fs, /* File system object */ + DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */ + DWORD val /* New value to mark the cluster */ +) +{ + UINT bc; + BYTE *p; + FRESULT res; + + + if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ + res = FR_INT_ERR; + + } else { + switch (fs->fs_type) { + case FS_FAT12 : + bc = clst; bc += bc / 2; + res = move_window(fs, fs->fatbase + (bc / SS(fs))); + if (res != FR_OK) break; + p = &fs->win[bc % SS(fs)]; + *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; + bc++; + fs->wflag = 1; + res = move_window(fs, fs->fatbase + (bc / SS(fs))); + if (res != FR_OK) break; + p = &fs->win[bc % SS(fs)]; + *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); + break; + + case FS_FAT16 : + res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); + if (res != FR_OK) break; + p = &fs->win[clst * 2 % SS(fs)]; + ST_WORD(p, (WORD)val); + break; + + case FS_FAT32 : + res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); + if (res != FR_OK) break; + p = &fs->win[clst * 4 % SS(fs)]; + val |= LD_DWORD(p) & 0xF0000000; + ST_DWORD(p, val); + break; + + default : + res = FR_INT_ERR; + } + fs->wflag = 1; + } + + return res; +} +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* FAT handling - Remove a cluster chain */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY +static +FRESULT remove_chain ( + FATFS *fs, /* File system object */ + DWORD clst /* Cluster# to remove a chain from */ +) +{ + FRESULT res; + DWORD nxt; +#if _USE_ERASE + DWORD scl = clst, ecl = clst, resion[2]; +#endif + + if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ + res = FR_INT_ERR; + + } else { + res = FR_OK; + while (clst < fs->n_fatent) { /* Not a last link? */ + nxt = get_fat(fs, clst); /* Get cluster status */ + if (nxt == 0) break; /* Empty cluster? */ + if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */ + if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */ + res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */ + if (res != FR_OK) break; + if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */ + fs->free_clust++; + fs->fsi_flag = 1; + } +#if _USE_ERASE + if (ecl + 1 == nxt) { /* Next cluster is contiguous */ + ecl = nxt; + } else { /* End of contiguous clusters */ + resion[0] = clust2sect(fs, scl); /* Start sector */ + resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */ + disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */ + scl = ecl = nxt; + } +#endif + clst = nxt; /* Next cluster */ + } + } + + return res; +} +#endif + + + + +/*-----------------------------------------------------------------------*/ +/* FAT handling - Stretch or Create a cluster chain */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY +static +DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ + FATFS *fs, /* File system object */ + DWORD clst /* Cluster# to stretch. 0 means create a new chain. */ +) +{ + DWORD cs, ncl, scl; + FRESULT res; + + + if (clst == 0) { /* Create a new chain */ + scl = fs->last_clust; /* Get suggested start point */ + if (!scl || scl >= fs->n_fatent) scl = 1; + } + else { /* Stretch the current chain */ + cs = get_fat(fs, clst); /* Check the cluster status */ + if (cs < 2) return 1; /* It is an invalid cluster */ + if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */ + scl = clst; + } + + ncl = scl; /* Start cluster */ + for (;;) { + ncl++; /* Next cluster */ + if (ncl >= fs->n_fatent) { /* Wrap around */ + ncl = 2; + if (ncl > scl) return 0; /* No free cluster */ + } + cs = get_fat(fs, ncl); /* Get the cluster status */ + if (cs == 0) break; /* Found a free cluster */ + if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */ + return cs; + if (ncl == scl) return 0; /* No free cluster */ + } + + res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */ + if (res == FR_OK && clst != 0) { + res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */ + } + if (res == FR_OK) { + fs->last_clust = ncl; /* Update FSINFO */ + if (fs->free_clust != 0xFFFFFFFF) { + fs->free_clust--; + fs->fsi_flag = 1; + } + } else { + ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; + } + + return ncl; /* Return new cluster number or error code */ +} +#endif /* !_FS_READONLY */ + + + +/*-----------------------------------------------------------------------*/ +/* FAT handling - Convert offset into cluster with link map table */ +/*-----------------------------------------------------------------------*/ + +#if _USE_FASTSEEK +static +DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */ + FIL* fp, /* Pointer to the file object */ + DWORD ofs /* File offset to be converted to cluster# */ +) +{ + DWORD cl, ncl, *tbl; + + + tbl = fp->cltbl + 1; /* Top of CLMT */ + cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */ + for (;;) { + ncl = *tbl++; /* Number of cluters in the fragment */ + if (!ncl) return 0; /* End of table? (error) */ + if (cl < ncl) break; /* In this fragment? */ + cl -= ncl; tbl++; /* Next fragment */ + } + return cl + *tbl; /* Return the cluster number */ +} +#endif /* _USE_FASTSEEK */ + + + +/*-----------------------------------------------------------------------*/ +/* Directory handling - Set directory index */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT dir_sdi ( + DIR *dj, /* Pointer to directory object */ + WORD idx /* Directory index number */ +) +{ + DWORD clst; + WORD ic; + + + dj->index = idx; + clst = dj->sclust; + if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */ + return FR_INT_ERR; + if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */ + clst = dj->fs->dirbase; + + if (clst == 0) { /* Static table (root-dir in FAT12/16) */ + dj->clust = clst; + if (idx >= dj->fs->n_rootdir) /* Index is out of range */ + return FR_INT_ERR; + dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ + } + else { /* Dynamic table (sub-dirs or root-dir in FAT32) */ + ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */ + while (idx >= ic) { /* Follow cluster chain */ + clst = get_fat(dj->fs, clst); /* Get next cluster */ + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ + if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */ + return FR_INT_ERR; + idx -= ic; + } + dj->clust = clst; + dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ + } + + dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */ + + return FR_OK; /* Seek succeeded */ +} + + + + +/*-----------------------------------------------------------------------*/ +/* Directory handling - Move directory index next */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */ + DIR *dj, /* Pointer to directory object */ + int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ +) +{ + DWORD clst; + WORD i; + + + i = dj->index + 1; + if (!i || !dj->sect) /* Report EOT when index has reached 65535 */ + return FR_NO_FILE; + + if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */ + dj->sect++; /* Next sector */ + + if (dj->clust == 0) { /* Static table */ + if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */ + return FR_NO_FILE; + } + else { /* Dynamic table */ + if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */ + clst = get_fat(dj->fs, dj->clust); /* Get next cluster */ + if (clst <= 1) return FR_INT_ERR; + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; + if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */ +#if !_FS_READONLY + BYTE c; + if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */ + clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */ + if (clst == 0) return FR_DENIED; /* No free cluster */ + if (clst == 1) return FR_INT_ERR; + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; + /* Clean-up stretched table */ + if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */ + mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */ + dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */ + for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */ + dj->fs->wflag = 1; + if (move_window(dj->fs, 0)) return FR_DISK_ERR; + dj->fs->winsect++; + } + dj->fs->winsect -= c; /* Rewind window address */ +#else + return FR_NO_FILE; /* Report EOT */ +#endif + } + dj->clust = clst; /* Initialize data for new cluster */ + dj->sect = clust2sect(dj->fs, clst); + } + } + } + + dj->index = i; + dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; + + return FR_OK; +} + + + + +/*-----------------------------------------------------------------------*/ +/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */ +/*-----------------------------------------------------------------------*/ +#if _USE_LFN +static +const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */ + + +static +int cmp_lfn ( /* 1:Matched, 0:Not matched */ + WCHAR *lfnbuf, /* Pointer to the LFN to be compared */ + BYTE *dir /* Pointer to the directory entry containing a part of LFN */ +) +{ + UINT i, s; + WCHAR wc, uc; + + + i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */ + s = 0; wc = 1; + do { + uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ + if (wc) { /* Last char has not been processed */ + wc = ff_wtoupper(uc); /* Convert it to upper case */ + if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */ + return 0; /* Not matched */ + } else { + if (uc != 0xFFFF) return 0; /* Check filler */ + } + } while (++s < 13); /* Repeat until all chars in the entry are checked */ + + if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */ + return 0; + + return 1; /* The part of LFN matched */ +} + + + +static +int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */ + WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */ + BYTE *dir /* Pointer to the directory entry */ +) +{ + UINT i, s; + WCHAR wc, uc; + + + i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ + + s = 0; wc = 1; + do { + uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ + if (wc) { /* Last char has not been processed */ + if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ + lfnbuf[i++] = wc = uc; /* Store it */ + } else { + if (uc != 0xFFFF) return 0; /* Check filler */ + } + } while (++s < 13); /* Read all character in the entry */ + + if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */ + if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ + lfnbuf[i] = 0; + } + + return 1; +} + + +#if !_FS_READONLY +static +void fit_lfn ( + const WCHAR *lfnbuf, /* Pointer to the LFN buffer */ + BYTE *dir, /* Pointer to the directory entry */ + BYTE ord, /* LFN order (1-20) */ + BYTE sum /* SFN sum */ +) +{ + UINT i, s; + WCHAR wc; + + + dir[LDIR_Chksum] = sum; /* Set check sum */ + dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ + dir[LDIR_Type] = 0; + ST_WORD(dir+LDIR_FstClusLO, 0); + + i = (ord - 1) * 13; /* Get offset in the LFN buffer */ + s = wc = 0; + do { + if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */ + ST_WORD(dir+LfnOfs[s], wc); /* Put it */ + if (!wc) wc = 0xFFFF; /* Padding chars following last char */ + } while (++s < 13); + if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */ + dir[LDIR_Ord] = ord; /* Set the LFN order */ +} + +#endif +#endif + + + +/*-----------------------------------------------------------------------*/ +/* Create numbered name */ +/*-----------------------------------------------------------------------*/ +#if _USE_LFN +void gen_numname ( + BYTE *dst, /* Pointer to generated SFN */ + const BYTE *src, /* Pointer to source SFN to be modified */ + const WCHAR *lfn, /* Pointer to LFN */ + WORD seq /* Sequence number */ +) +{ + BYTE ns[8], c; + UINT i, j; + + + mem_cpy(dst, src, 11); + + if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */ + do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn); + } + + /* itoa (hexdecimal) */ + i = 7; + do { + c = (seq % 16) + '0'; + if (c > '9') c += 7; + ns[i--] = c; + seq /= 16; + } while (seq); + ns[i] = '~'; + + /* Append the number */ + for (j = 0; j < i && dst[j] != ' '; j++) { + if (IsDBCS1(dst[j])) { + if (j == i - 1) break; + j++; + } + } + do { + dst[j++] = (i < 8) ? ns[i++] : ' '; + } while (j < 8); +} +#endif + + + + +/*-----------------------------------------------------------------------*/ +/* Calculate sum of an SFN */ +/*-----------------------------------------------------------------------*/ +#if _USE_LFN +static +BYTE sum_sfn ( + const BYTE *dir /* Ptr to directory entry */ +) +{ + BYTE sum = 0; + UINT n = 11; + + do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n); + return sum; +} +#endif + + + + +/*-----------------------------------------------------------------------*/ +/* Directory handling - Find an object in the directory */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT dir_find ( + DIR *dj /* Pointer to the directory object linked to the file name */ +) +{ + FRESULT res; + BYTE c, *dir; +#if _USE_LFN + BYTE a, ord, sum; +#endif + + res = dir_sdi(dj, 0); /* Rewind directory object */ + if (res != FR_OK) return res; + +#if _USE_LFN + ord = sum = 0xFF; +#endif + do { + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + dir = dj->dir; /* Ptr to the directory entry of current index */ + c = dir[DIR_Name]; + if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ +#if _USE_LFN /* LFN configuration */ + a = dir[DIR_Attr] & AM_MASK; + if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ + ord = 0xFF; + } else { + if (a == AM_LFN) { /* An LFN entry is found */ + if (dj->lfn) { + if (c & LLE) { /* Is it start of LFN sequence? */ + sum = dir[LDIR_Chksum]; + c &= ~LLE; ord = c; /* LFN start order */ + dj->lfn_idx = dj->index; + } + /* Check validity of the LFN entry and compare it with given name */ + ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; + } + } else { /* An SFN entry is found */ + if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */ + ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */ + if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */ + } + } +#else /* Non LFN configuration */ + if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */ + break; +#endif + res = dir_next(dj, 0); /* Next entry */ + } while (res == FR_OK); + + return res; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Read an object from the directory */ +/*-----------------------------------------------------------------------*/ +#if _FS_MINIMIZE <= 1 +static +FRESULT dir_read ( + DIR *dj /* Pointer to the directory object that pointing the entry to be read */ +) +{ + FRESULT res; + BYTE c, *dir; +#if _USE_LFN + BYTE a, ord = 0xFF, sum = 0xFF; +#endif + + res = FR_NO_FILE; + while (dj->sect) { + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + dir = dj->dir; /* Ptr to the directory entry of current index */ + c = dir[DIR_Name]; + if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ +#if _USE_LFN /* LFN configuration */ + a = dir[DIR_Attr] & AM_MASK; + if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ + ord = 0xFF; + } else { + if (a == AM_LFN) { /* An LFN entry is found */ + if (c & LLE) { /* Is it start of LFN sequence? */ + sum = dir[LDIR_Chksum]; + c &= ~LLE; ord = c; + dj->lfn_idx = dj->index; + } + /* Check LFN validity and capture it */ + ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; + } else { /* An SFN entry is found */ + if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */ + dj->lfn_idx = 0xFFFF; /* It has no LFN. */ + break; + } + } +#else /* Non LFN configuration */ + if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */ + break; +#endif + res = dir_next(dj, 0); /* Next entry */ + if (res != FR_OK) break; + } + + if (res != FR_OK) dj->sect = 0; + + return res; +} +#endif + + + +/*-----------------------------------------------------------------------*/ +/* Register an object to the directory */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY +static +FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */ + DIR *dj /* Target directory with object name to be created */ +) +{ + FRESULT res; + BYTE c, *dir; +#if _USE_LFN /* LFN configuration */ + WORD n, ne, is; + BYTE sn[12], *fn, sum; + WCHAR *lfn; + + + fn = dj->fn; lfn = dj->lfn; + mem_cpy(sn, fn, 12); + + if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */ + return FR_INVALID_NAME; + + if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ + fn[NS] = 0; dj->lfn = 0; /* Find only SFN */ + for (n = 1; n < 100; n++) { + gen_numname(fn, sn, lfn, n); /* Generate a numbered name */ + res = dir_find(dj); /* Check if the name collides with existing SFN */ + if (res != FR_OK) break; + } + if (n == 100) return FR_DENIED; /* Abort if too many collisions */ + if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */ + fn[NS] = sn[NS]; dj->lfn = lfn; + } + + if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */ + for (ne = 0; lfn[ne]; ne++) ; + ne = (ne + 25) / 13; + } else { /* Otherwise reserve only an SFN entry. */ + ne = 1; + } + + /* Reserve contiguous entries */ + res = dir_sdi(dj, 0); + if (res != FR_OK) return res; + n = is = 0; + do { + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + c = *dj->dir; /* Check the entry status */ + if (c == DDE || c == 0) { /* Is it a blank entry? */ + if (n == 0) is = dj->index; /* First index of the contiguous entry */ + if (++n == ne) break; /* A contiguous entry that required count is found */ + } else { + n = 0; /* Not a blank entry. Restart to search */ + } + res = dir_next(dj, 1); /* Next entry with table stretch */ + } while (res == FR_OK); + + if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */ + res = dir_sdi(dj, is); + if (res == FR_OK) { + sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */ + ne--; + do { /* Store LFN entries in bottom first */ + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum); + dj->fs->wflag = 1; + res = dir_next(dj, 0); /* Next entry */ + } while (res == FR_OK && --ne); + } + } + +#else /* Non LFN configuration */ + res = dir_sdi(dj, 0); + if (res == FR_OK) { + do { /* Find a blank entry for the SFN */ + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + c = *dj->dir; + if (c == DDE || c == 0) break; /* Is it a blank entry? */ + res = dir_next(dj, 1); /* Next entry with table stretch */ + } while (res == FR_OK); + } +#endif + + if (res == FR_OK) { /* Initialize the SFN entry */ + res = move_window(dj->fs, dj->sect); + if (res == FR_OK) { + dir = dj->dir; + mem_set(dir, 0, SZ_DIR); /* Clean the entry */ + mem_cpy(dir, dj->fn, 11); /* Put SFN */ +#if _USE_LFN + dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */ +#endif + dj->fs->wflag = 1; + } + } + + return res; +} +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* Remove an object from the directory */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY && !_FS_MINIMIZE +static +FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ + DIR *dj /* Directory object pointing the entry to be removed */ +) +{ + FRESULT res; +#if _USE_LFN /* LFN configuration */ + WORD i; + + i = dj->index; /* SFN index */ + res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */ + if (res == FR_OK) { + do { + res = move_window(dj->fs, dj->sect); + if (res != FR_OK) break; + *dj->dir = DDE; /* Mark the entry "deleted" */ + dj->fs->wflag = 1; + if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */ + res = dir_next(dj, 0); /* Next entry */ + } while (res == FR_OK); + if (res == FR_NO_FILE) res = FR_INT_ERR; + } + +#else /* Non LFN configuration */ + res = dir_sdi(dj, dj->index); + if (res == FR_OK) { + res = move_window(dj->fs, dj->sect); + if (res == FR_OK) { + *dj->dir = DDE; /* Mark the entry "deleted" */ + dj->fs->wflag = 1; + } + } +#endif + + return res; +} +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* Pick a segment and create the object name in directory form */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT create_name ( + DIR *dj, /* Pointer to the directory object */ + const TCHAR **path /* Pointer to pointer to the segment in the path string */ +) +{ +#ifdef _EXCVT + static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */ +#endif + +#if _USE_LFN /* LFN configuration */ + BYTE b, cf; + WCHAR w, *lfn; + UINT i, ni, si, di; + const TCHAR *p; + + /* Create LFN in Unicode */ + for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ + lfn = dj->lfn; + si = di = 0; + for (;;) { + w = p[si++]; /* Get a character */ + if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */ + if (di >= _MAX_LFN) /* Reject too long name */ + return FR_INVALID_NAME; +#if !_LFN_UNICODE + w &= 0xFF; + if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ + b = (BYTE)p[si++]; /* Get 2nd byte */ + if (!IsDBCS2(b)) + return FR_INVALID_NAME; /* Reject invalid sequence */ + w = (w << 8) + b; /* Create a DBC */ + } + w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */ + if (!w) return FR_INVALID_NAME; /* Reject invalid code */ +#endif + if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */ + return FR_INVALID_NAME; + lfn[di++] = w; /* Store the Unicode char */ + } + *path = &p[si]; /* Return pointer to the next segment */ + cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ +#if _FS_RPATH + if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */ + (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) { + lfn[di] = 0; + for (i = 0; i < 11; i++) + dj->fn[i] = (i < di) ? '.' : ' '; + dj->fn[i] = cf | NS_DOT; /* This is a dot entry */ + return FR_OK; + } +#endif + while (di) { /* Strip trailing spaces and dots */ + w = lfn[di-1]; + if (w != ' ' && w != '.') break; + di--; + } + if (!di) return FR_INVALID_NAME; /* Reject nul string */ + + lfn[di] = 0; /* LFN is created */ + + /* Create SFN in directory form */ + mem_set(dj->fn, ' ', 11); + for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */ + if (si) cf |= NS_LOSS | NS_LFN; + while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */ + + b = i = 0; ni = 8; + for (;;) { + w = lfn[si++]; /* Get an LFN char */ + if (!w) break; /* Break on end of the LFN */ + if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */ + cf |= NS_LOSS | NS_LFN; continue; + } + + if (i >= ni || si == di) { /* Extension or end of SFN */ + if (ni == 11) { /* Long extension */ + cf |= NS_LOSS | NS_LFN; break; + } + if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */ + if (si > di) break; /* No extension */ + si = di; i = 8; ni = 11; /* Enter extension section */ + b <<= 2; continue; + } + + if (w >= 0x80) { /* Non ASCII char */ +#ifdef _EXCVT + w = ff_convert(w, 0); /* Unicode -> OEM code */ + if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */ +#else + w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */ +#endif + cf |= NS_LFN; /* Force create LFN entry */ + } + + if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */ + if (i >= ni - 1) { + cf |= NS_LOSS | NS_LFN; i = ni; continue; + } + dj->fn[i++] = (BYTE)(w >> 8); + } else { /* Single byte char */ + if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */ + w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */ + } else { + if (IsUpper(w)) { /* ASCII large capital */ + b |= 2; + } else { + if (IsLower(w)) { /* ASCII small capital */ + b |= 1; w -= 0x20; + } + } + } + } + dj->fn[i++] = (BYTE)w; + } + + if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */ + + if (ni == 8) b <<= 2; + if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */ + cf |= NS_LFN; + if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */ + if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */ + if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */ + } + + dj->fn[NS] = cf; /* SFN is created */ + + return FR_OK; + + +#else /* Non-LFN configuration */ + BYTE b, c, d, *sfn; + UINT ni, si, i; + const char *p; + + /* Create file name in directory form */ + for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ + sfn = dj->fn; + mem_set(sfn, ' ', 11); + si = i = b = 0; ni = 8; +#if _FS_RPATH + if (p[si] == '.') { /* Is this a dot entry? */ + for (;;) { + c = (BYTE)p[si++]; + if (c != '.' || si >= 3) break; + sfn[i++] = c; + } + if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME; + *path = &p[si]; /* Return pointer to the next segment */ + sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */ + return FR_OK; + } +#endif + for (;;) { + c = (BYTE)p[si++]; + if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */ + if (c == '.' || i >= ni) { + if (ni != 8 || c != '.') return FR_INVALID_NAME; + i = 8; ni = 11; + b <<= 2; continue; + } + if (c >= 0x80) { /* Extended char? */ + b |= 3; /* Eliminate NT flag */ +#ifdef _EXCVT + c = excvt[c-0x80]; /* Upper conversion (SBCS) */ +#else +#if !_DF1S /* ASCII only cfg */ + return FR_INVALID_NAME; +#endif +#endif + } + if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ + d = (BYTE)p[si++]; /* Get 2nd byte */ + if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */ + return FR_INVALID_NAME; + sfn[i++] = c; + sfn[i++] = d; + } else { /* Single byte code */ + if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */ + return FR_INVALID_NAME; + if (IsUpper(c)) { /* ASCII large capital? */ + b |= 2; + } else { + if (IsLower(c)) { /* ASCII small capital? */ + b |= 1; c -= 0x20; + } + } + sfn[i++] = c; + } + } + *path = &p[si]; /* Return pointer to the next segment */ + c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ + + if (!i) return FR_INVALID_NAME; /* Reject nul string */ + if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */ + + if (ni == 8) b <<= 2; + if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */ + if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */ + + sfn[NS] = c; /* Store NT flag, File name is created */ + + return FR_OK; +#endif +} + + + + +/*-----------------------------------------------------------------------*/ +/* Get file information from directory entry */ +/*-----------------------------------------------------------------------*/ +#if _FS_MINIMIZE <= 1 +static +void get_fileinfo ( /* No return code */ + DIR *dj, /* Pointer to the directory object */ + FILINFO *fno /* Pointer to the file information to be filled */ +) +{ + UINT i; + BYTE nt, *dir; + TCHAR *p, c; + + + p = fno->fname; + if (dj->sect) { + dir = dj->dir; + nt = dir[DIR_NTres]; /* NT flag */ + for (i = 0; i < 8; i++) { /* Copy name body */ + c = dir[i]; + if (c == ' ') break; + if (c == NDDE) c = (TCHAR)DDE; + if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20; +#if _LFN_UNICODE + if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1])) + c = (c << 8) | dir[++i]; + c = ff_convert(c, 1); + if (!c) c = '?'; +#endif + *p++ = c; + } + if (dir[8] != ' ') { /* Copy name extension */ + *p++ = '.'; + for (i = 8; i < 11; i++) { + c = dir[i]; + if (c == ' ') break; + if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20; +#if _LFN_UNICODE + if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1])) + c = (c << 8) | dir[++i]; + c = ff_convert(c, 1); + if (!c) c = '?'; +#endif + *p++ = c; + } + } + fno->fattrib = dir[DIR_Attr]; /* Attribute */ + fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ + fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ + fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ + } + *p = 0; /* Terminate SFN str by a \0 */ + +#if _USE_LFN + if (fno->lfname && fno->lfsize) { + TCHAR *tp = fno->lfname; + WCHAR w, *lfn; + + i = 0; + if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */ + lfn = dj->lfn; + while ((w = *lfn++) != 0) { /* Get an LFN char */ +#if !_LFN_UNICODE + w = ff_convert(w, 0); /* Unicode -> OEM conversion */ + if (!w) { i = 0; break; } /* Could not convert, no LFN */ + if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */ + tp[i++] = (TCHAR)(w >> 8); +#endif + if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */ + tp[i++] = (TCHAR)w; + } + } + tp[i] = 0; /* Terminate the LFN str by a \0 */ + } +#endif +} +#endif /* _FS_MINIMIZE <= 1 */ + + + + +/*-----------------------------------------------------------------------*/ +/* Follow a file path */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ + DIR *dj, /* Directory object to return last directory and found object */ + const TCHAR *path /* Full-path string to find a file or directory */ +) +{ + FRESULT res; + BYTE *dir, ns; + + +#if _FS_RPATH + if (*path == '/' || *path == '\\') { /* There is a heading separator */ + path++; dj->sclust = 0; /* Strip it and start from the root dir */ + } else { /* No heading separator */ + dj->sclust = dj->fs->cdir; /* Start from the current dir */ + } +#else + if (*path == '/' || *path == '\\') /* Strip heading separator if exist */ + path++; + dj->sclust = 0; /* Start from the root dir */ +#endif + + if ((UINT)*path < ' ') { /* Nul path means the start directory itself */ + res = dir_sdi(dj, 0); + dj->dir = 0; + + } else { /* Follow path */ + for (;;) { + res = create_name(dj, &path); /* Get a segment */ + if (res != FR_OK) break; + res = dir_find(dj); /* Find it */ + ns = *(dj->fn+NS); + if (res != FR_OK) { /* Failed to find the object */ + if (res != FR_NO_FILE) break; /* Abort if any hard error occured */ + /* Object not found */ + if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */ + dj->sclust = 0; dj->dir = 0; /* It is the root dir */ + res = FR_OK; + if (!(ns & NS_LAST)) continue; + } else { /* Could not find the object */ + if (!(ns & NS_LAST)) res = FR_NO_PATH; + } + break; + } + if (ns & NS_LAST) break; /* Last segment match. Function completed. */ + dir = dj->dir; /* There is next segment. Follow the sub directory */ + if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */ + res = FR_NO_PATH; break; + } + dj->sclust = LD_CLUST(dir); + } + } + + return res; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Load boot record and check if it is an FAT boot record */ +/*-----------------------------------------------------------------------*/ + +static +BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */ + FATFS *fs, /* File system object */ + DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ +) +{ + if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */ + return 3; + if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */ + return 2; + + if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ + return 0; + if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) + return 0; + + return 1; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Check if the file system object is valid or not */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */ + const TCHAR **path, /* Pointer to pointer to the path name (drive number) */ + FATFS **rfs, /* Pointer to pointer to the found file system object */ + BYTE chk_wp /* !=0: Check media write protection for write access */ +) +{ + BYTE fmt, b, *tbl; + UINT vol; + DSTATUS stat; + DWORD bsect, fasize, tsect, sysect, nclst, szbfat; + WORD nrsv; + const TCHAR *p = *path; + FATFS *fs; + + /* Get logical drive number from the path name */ + vol = p[0] - '0'; /* Is there a drive number? */ + if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */ + p += 2; *path = p; /* Return pointer to the path name */ + } else { /* No drive number is given */ +#if _FS_RPATH + vol = CurrVol; /* Use current drive */ +#else + vol = 0; /* Use drive 0 */ +#endif + } + + /* Check if the logical drive is valid or not */ + if (vol >= _VOLUMES) /* Is the drive number valid? */ + return FR_INVALID_DRIVE; + *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */ + if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */ + + ENTER_FF(fs); /* Lock file system */ + + if (fs->fs_type) { /* If the logical drive has been mounted */ + stat = disk_status(fs->drv); + if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */ +#if !_FS_READONLY + if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ + return FR_WRITE_PROTECTED; +#endif + return FR_OK; /* The file system object is valid */ + } + } + + /* The logical drive must be mounted. */ + /* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */ + + fs->fs_type = 0; /* Clear the file system object */ + fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */ + stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */ + if (stat & STA_NOINIT) /* Check if the initialization succeeded */ + return FR_NOT_READY; /* Failed to initialize due to no media or hard error */ +#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */ + if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK) + return FR_DISK_ERR; +#endif +#if !_FS_READONLY + if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */ + return FR_WRITE_PROTECTED; +#endif + /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */ + fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */ + if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */ + /* Check the partition listed in top of the partition table */ + tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */ + if (tbl[4]) { /* Is the partition existing? */ + bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */ + fmt = check_fs(fs, bsect); /* Check the partition */ + } + } + if (fmt == 3) return FR_DISK_ERR; + if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */ + + /* Following code initializes the file system object */ + + if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */ + return FR_NO_FILESYSTEM; + + fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */ + if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32); + fs->fsize = fasize; + + fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */ + if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ + fasize *= b; /* Number of sectors for FAT area */ + + fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ + if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */ + + fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */ + if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */ + + tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */ + if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32); + + nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ + if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */ + + /* Determine the FAT sub type */ + sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */ + if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ + nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ + if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ + fmt = FS_FAT12; + if (nclst >= MIN_FAT16) fmt = FS_FAT16; + if (nclst >= MIN_FAT32) fmt = FS_FAT32; + + /* Boundaries and Limits */ + fs->n_fatent = nclst + 2; /* Number of FAT entries */ + fs->database = bsect + sysect; /* Data start sector */ + fs->fatbase = bsect + nrsv; /* FAT start sector */ + if (fmt == FS_FAT32) { + if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ + fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */ + szbfat = fs->n_fatent * 4; /* (Required FAT size) */ + } else { + if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ + fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ + szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */ + fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); + } + if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */ + return FR_NO_FILESYSTEM; + +#if !_FS_READONLY + /* Initialize cluster allocation information */ + fs->free_clust = 0xFFFFFFFF; + fs->last_clust = 0; + + /* Get fsinfo if available */ + if (fmt == FS_FAT32) { + fs->fsi_flag = 0; + fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo); + if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK && + LD_WORD(fs->win+BS_55AA) == 0xAA55 && + LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 && + LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) { + fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free); + fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count); + } + } +#endif + fs->fs_type = fmt; /* FAT sub-type */ + fs->id = ++Fsid; /* File system mount ID */ + fs->winsect = 0; /* Invalidate sector cache */ + fs->wflag = 0; +#if _FS_RPATH + fs->cdir = 0; /* Current directory (root dir) */ +#endif +#if _FS_SHARE /* Clear file lock semaphores */ + clear_lock(fs); +#endif + + return FR_OK; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Check if the file/dir object is valid or not */ +/*-----------------------------------------------------------------------*/ + +static +FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ + FATFS *fs, /* Pointer to the file system object */ + WORD id /* Member id of the target object to be checked */ +) +{ + if (!fs || !fs->fs_type || fs->id != id) + return FR_INVALID_OBJECT; + + ENTER_FF(fs); /* Lock file system */ + + if (disk_status(fs->drv) & STA_NOINIT) + return FR_NOT_READY; + + return FR_OK; +} + + + + +/*-------------------------------------------------------------------------- + + Public Functions + +--------------------------------------------------------------------------*/ + + + +/*-----------------------------------------------------------------------*/ +/* Mount/Unmount a Logical Drive */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_mount ( + BYTE vol, /* Logical drive number to be mounted/unmounted */ + FATFS *fs /* Pointer to new file system object (NULL for unmount)*/ +) +{ + FATFS *rfs; + + + if (vol >= _VOLUMES) /* Check if the drive number is valid */ + return FR_INVALID_DRIVE; + rfs = FatFs[vol]; /* Get current fs object */ + + if (rfs) { +#if _FS_SHARE + clear_lock(rfs); +#endif +#if _FS_REENTRANT /* Discard sync object of the current volume */ + if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR; +#endif + rfs->fs_type = 0; /* Clear old fs object */ + } + + if (fs) { + fs->fs_type = 0; /* Clear new fs object */ +#if _FS_REENTRANT /* Create sync object for the new volume */ + if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR; +#endif + } + FatFs[vol] = fs; /* Register new fs object */ + + return FR_OK; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Open or Create a File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_open ( + FIL *fp, /* Pointer to the blank file object */ + const TCHAR *path, /* Pointer to the file name */ + BYTE mode /* Access mode and file open mode flags */ +) +{ + FRESULT res; + DIR dj; + BYTE *dir; + DEF_NAMEBUF; + + + fp->fs = 0; /* Clear file object */ + +#if !_FS_READONLY + mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW; + res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ)); +#else + mode &= FA_READ; + res = chk_mounted(&path, &dj.fs, 0); +#endif + INIT_BUF(dj); + if (res == FR_OK) + res = follow_path(&dj, path); /* Follow the file path */ + dir = dj.dir; + +#if !_FS_READONLY /* R/W configuration */ + if (res == FR_OK) { + if (!dir) /* Current dir itself */ + res = FR_INVALID_NAME; +#if _FS_SHARE + else + res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); +#endif + } + /* Create or Open a file */ + if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) { + DWORD dw, cl; + + if (res != FR_OK) { /* No file, create new */ + if (res == FR_NO_FILE) /* There is no file to open, create a new entry */ +#if _FS_SHARE + res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; +#else + res = dir_register(&dj); +#endif + mode |= FA_CREATE_ALWAYS; /* File is created */ + dir = dj.dir; /* New entry */ + } + else { /* Any object is already existing */ + if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */ + res = FR_DENIED; + } else { + if (mode & FA_CREATE_NEW) /* Cannot create as new file */ + res = FR_EXIST; + } + } + if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ + dw = get_fattime(); /* Created time */ + ST_DWORD(dir+DIR_CrtTime, dw); + dir[DIR_Attr] = 0; /* Reset attribute */ + ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ + cl = LD_CLUST(dir); /* Get start cluster */ + ST_CLUST(dir, 0); /* cluster = 0 */ + dj.fs->wflag = 1; + if (cl) { /* Remove the cluster chain if exist */ + dw = dj.fs->winsect; + res = remove_chain(dj.fs, cl); + if (res == FR_OK) { + dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */ + res = move_window(dj.fs, dw); + } + } + } + } + else { /* Open an existing file */ + if (res == FR_OK) { /* Follow succeeded */ + if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */ + res = FR_NO_FILE; + } else { + if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ + res = FR_DENIED; + } + } + } + if (res == FR_OK) { + if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */ + mode |= FA__WRITTEN; + fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ + fp->dir_ptr = dir; +#if _FS_SHARE + fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); + if (!fp->lockid) res = FR_INT_ERR; +#endif + } + +#else /* R/O configuration */ + if (res == FR_OK) { /* Follow succeeded */ + if (!dir) { /* Current dir itself */ + res = FR_INVALID_NAME; + } else { + if (dir[DIR_Attr] & AM_DIR) /* It is a directory */ + res = FR_NO_FILE; + } + } +#endif + FREE_BUF(); + + if (res == FR_OK) { + fp->flag = mode; /* File access mode */ + fp->sclust = LD_CLUST(dir); /* File start cluster */ + fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ + fp->fptr = 0; /* File pointer */ + fp->dsect = 0; +#if _USE_FASTSEEK + fp->cltbl = 0; /* Normal seek mode */ +#endif + fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */ + } + + LEAVE_FF(dj.fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Read File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_read ( + FIL *fp, /* Pointer to the file object */ + void *buff, /* Pointer to data buffer */ + UINT btr, /* Number of bytes to read */ + UINT *br /* Pointer to number of bytes read */ +) +{ + FRESULT res; + DWORD clst, sect, remain; + UINT rcnt, cc; + BYTE csect, *rbuff = buff; + + + *br = 0; /* Initialize byte counter */ + + res = validate(fp->fs, fp->id); /* Check validity */ + if (res != FR_OK) LEAVE_FF(fp->fs, res); + if (fp->flag & FA__ERROR) /* Aborted file? */ + LEAVE_FF(fp->fs, FR_INT_ERR); + if (!(fp->flag & FA_READ)) /* Check access mode */ + LEAVE_FF(fp->fs, FR_DENIED); + remain = fp->fsize - fp->fptr; + if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ + + for ( ; btr; /* Repeat until all data read */ + rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { + if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ + csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ + if (!csect) { /* On the cluster boundary? */ + if (fp->fptr == 0) { /* On the top of the file? */ + clst = fp->sclust; /* Follow from the origin */ + } else { /* Middle or end of the file */ +#if _USE_FASTSEEK + if (fp->cltbl) + clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ + else +#endif + clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */ + } + if (clst < 2) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->clust = clst; /* Update current cluster */ + } + sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ + if (!sect) ABORT(fp->fs, FR_INT_ERR); + sect += csect; + cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ + if (cc) { /* Read maximum contiguous sectors directly */ + if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ + cc = fp->fs->csize - csect; + if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); +#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */ +#if _FS_TINY + if (fp->fs->wflag && fp->fs->winsect - sect < cc) + mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); +#else + if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) + mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs)); +#endif +#endif + rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ + continue; + } +#if !_FS_TINY + if (fp->dsect != sect) { /* Load data sector if not in cache */ +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */ + ABORT(fp->fs, FR_DISK_ERR); + } +#endif + fp->dsect = sect; + } + rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */ + if (rcnt > btr) rcnt = btr; +#if _FS_TINY + if (move_window(fp->fs, fp->dsect)) /* Move sector window */ + ABORT(fp->fs, FR_DISK_ERR); + mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ +#else + mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ +#endif + } + + LEAVE_FF(fp->fs, FR_OK); +} + + + + +#if !_FS_READONLY +/*-----------------------------------------------------------------------*/ +/* Write File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_write ( + FIL *fp, /* Pointer to the file object */ + const void *buff, /* Pointer to the data to be written */ + UINT btw, /* Number of bytes to write */ + UINT *bw /* Pointer to number of bytes written */ +) +{ + FRESULT res; + DWORD clst, sect; + UINT wcnt, cc; + const BYTE *wbuff = buff; + BYTE csect; + + + *bw = 0; /* Initialize byte counter */ + + res = validate(fp->fs, fp->id); /* Check validity */ + if (res != FR_OK) LEAVE_FF(fp->fs, res); + if (fp->flag & FA__ERROR) /* Aborted file? */ + LEAVE_FF(fp->fs, FR_INT_ERR); + if (!(fp->flag & FA_WRITE)) /* Check access mode */ + LEAVE_FF(fp->fs, FR_DENIED); + if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */ + + for ( ; btw; /* Repeat until all data written */ + wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { + if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ + csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ + if (!csect) { /* On the cluster boundary? */ + if (fp->fptr == 0) { /* On the top of the file? */ + clst = fp->sclust; /* Follow from the origin */ + if (clst == 0) /* When no cluster is allocated, */ + fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */ + } else { /* Middle or end of the file */ +#if _USE_FASTSEEK + if (fp->cltbl) + clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ + else +#endif + clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */ + } + if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ + if (clst == 1) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->clust = clst; /* Update current cluster */ + } +#if _FS_TINY + if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */ + ABORT(fp->fs, FR_DISK_ERR); +#else + if (fp->flag & FA__DIRTY) { /* Write-back sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ + if (!sect) ABORT(fp->fs, FR_INT_ERR); + sect += csect; + cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ + if (cc) { /* Write maximum contiguous sectors directly */ + if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ + cc = fp->fs->csize - csect; + if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); +#if _FS_TINY + if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ + mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs)); + fp->fs->wflag = 0; + } +#else + if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ + mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs)); + fp->flag &= ~FA__DIRTY; + } +#endif + wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ + continue; + } +#if _FS_TINY + if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */ + if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR); + fp->fs->winsect = sect; + } +#else + if (fp->dsect != sect) { /* Fill sector cache with file data */ + if (fp->fptr < fp->fsize && + disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); + } +#endif + fp->dsect = sect; + } + wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */ + if (wcnt > btw) wcnt = btw; +#if _FS_TINY + if (move_window(fp->fs, fp->dsect)) /* Move sector window */ + ABORT(fp->fs, FR_DISK_ERR); + mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ + fp->fs->wflag = 1; +#else + mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ + fp->flag |= FA__DIRTY; +#endif + } + + if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ + fp->flag |= FA__WRITTEN; /* Set file change flag */ + + LEAVE_FF(fp->fs, FR_OK); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Synchronize the File Object */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_sync ( + FIL *fp /* Pointer to the file object */ +) +{ + FRESULT res; + DWORD tim; + BYTE *dir; + + + res = validate(fp->fs, fp->id); /* Check validity of the object */ + if (res == FR_OK) { + if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ +#if !_FS_TINY /* Write-back dirty buffer */ + if (fp->flag & FA__DIRTY) { + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) + LEAVE_FF(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + /* Update the directory entry */ + res = move_window(fp->fs, fp->dir_sect); + if (res == FR_OK) { + dir = fp->dir_ptr; + dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ + ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */ + ST_CLUST(dir, fp->sclust); /* Update start cluster */ + tim = get_fattime(); /* Update updated time */ + ST_DWORD(dir+DIR_WrtTime, tim); + fp->flag &= ~FA__WRITTEN; + fp->fs->wflag = 1; + res = sync(fp->fs); + } + } + } + + LEAVE_FF(fp->fs, res); +} + +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* Close File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_close ( + FIL *fp /* Pointer to the file object to be closed */ +) +{ + FRESULT res; + +#if _FS_READONLY + FATFS *fs = fp->fs; + res = validate(fs, fp->id); + if (res == FR_OK) fp->fs = 0; /* Discard file object */ + LEAVE_FF(fs, res); + +#else + res = f_sync(fp); /* Flush cached data */ +#if _FS_SHARE + if (res == FR_OK) { /* Decrement open counter */ +#if _FS_REENTRANT + res = validate(fp->fs, fp->id); + if (res == FR_OK) { + res = dec_lock(fp->lockid); + unlock_fs(fp->fs, FR_OK); + } +#else + res = dec_lock(fp->lockid); +#endif + } +#endif + if (res == FR_OK) fp->fs = 0; /* Discard file object */ + return res; +#endif +} + + + + +/*-----------------------------------------------------------------------*/ +/* Current Drive/Directory Handlings */ +/*-----------------------------------------------------------------------*/ + +#if _FS_RPATH >= 1 + +FRESULT f_chdrive ( + BYTE drv /* Drive number */ +) +{ + if (drv >= _VOLUMES) return FR_INVALID_DRIVE; + + CurrVol = drv; + + return FR_OK; +} + + + +FRESULT f_chdir ( + const TCHAR *path /* Pointer to the directory path */ +) +{ + FRESULT res; + DIR dj; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 0); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the path */ + FREE_BUF(); + if (res == FR_OK) { /* Follow completed */ + if (!dj.dir) { + dj.fs->cdir = dj.sclust; /* Start directory itself */ + } else { + if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */ + dj.fs->cdir = LD_CLUST(dj.dir); + else + res = FR_NO_PATH; /* Reached but a file */ + } + } + if (res == FR_NO_FILE) res = FR_NO_PATH; + } + + LEAVE_FF(dj.fs, res); +} + + +#if _FS_RPATH >= 2 +FRESULT f_getcwd ( + TCHAR *path, /* Pointer to the directory path */ + UINT sz_path /* Size of path */ +) +{ + FRESULT res; + DIR dj; + UINT i, n; + DWORD ccl; + TCHAR *tp; + FILINFO fno; + DEF_NAMEBUF; + + + *path = 0; + res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */ + if (res == FR_OK) { + INIT_BUF(dj); + i = sz_path; /* Bottom of buffer (dir stack base) */ + dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */ + while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */ + res = dir_sdi(&dj, 1); /* Get parent dir */ + if (res != FR_OK) break; + res = dir_read(&dj); + if (res != FR_OK) break; + dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */ + res = dir_sdi(&dj, 0); + if (res != FR_OK) break; + do { /* Find the entry links to the child dir */ + res = dir_read(&dj); + if (res != FR_OK) break; + if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */ + res = dir_next(&dj, 0); + } while (res == FR_OK); + if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */ + if (res != FR_OK) break; +#if _USE_LFN + fno.lfname = path; + fno.lfsize = i; +#endif + get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */ + tp = fno.fname; + if (_USE_LFN && *path) tp = path; + for (n = 0; tp[n]; n++) ; + if (i < n + 3) { + res = FR_NOT_ENOUGH_CORE; break; + } + while (n) path[--i] = tp[--n]; + path[--i] = '/'; + } + tp = path; + if (res == FR_OK) { + *tp++ = '0' + CurrVol; /* Put drive number */ + *tp++ = ':'; + if (i == sz_path) { /* Root-dir */ + *tp++ = '/'; + } else { /* Sub-dir */ + do /* Add stacked path str */ + *tp++ = path[i++]; + while (i < sz_path); + } + } + *tp = 0; + FREE_BUF(); + } + + LEAVE_FF(dj.fs, res); +} +#endif /* _FS_RPATH >= 2 */ +#endif /* _FS_RPATH >= 1 */ + + + +#if _FS_MINIMIZE <= 2 +/*-----------------------------------------------------------------------*/ +/* Seek File R/W Pointer */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_lseek ( + FIL *fp, /* Pointer to the file object */ + DWORD ofs /* File pointer from top of file */ +) +{ + FRESULT res; + + + res = validate(fp->fs, fp->id); /* Check validity of the object */ + if (res != FR_OK) LEAVE_FF(fp->fs, res); + if (fp->flag & FA__ERROR) /* Check abort flag */ + LEAVE_FF(fp->fs, FR_INT_ERR); + +#if _USE_FASTSEEK + if (fp->cltbl) { /* Fast seek */ + DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; + + if (ofs == CREATE_LINKMAP) { /* Create CLMT */ + tbl = fp->cltbl; + tlen = *tbl++; ulen = 2; /* Given table size and required table size */ + cl = fp->sclust; /* Top of the chain */ + if (cl) { + do { + /* Get a fragment */ + tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */ + do { + pcl = cl; ncl++; + cl = get_fat(fp->fs, cl); + if (cl <= 1) ABORT(fp->fs, FR_INT_ERR); + if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + } while (cl == pcl + 1); + if (ulen <= tlen) { /* Store the length and top of the fragment */ + *tbl++ = ncl; *tbl++ = tcl; + } + } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */ + } + *fp->cltbl = ulen; /* Number of items used */ + if (ulen <= tlen) + *tbl = 0; /* Terminate table */ + else + res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */ + + } else { /* Fast seek */ + if (ofs > fp->fsize) /* Clip offset at the file size */ + ofs = fp->fsize; + fp->fptr = ofs; /* Set file pointer */ + if (ofs) { + fp->clust = clmt_clust(fp, ofs - 1); + dsc = clust2sect(fp->fs, fp->clust); + if (!dsc) ABORT(fp->fs, FR_INT_ERR); + dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1); + if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */ +#if !_FS_TINY +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */ + ABORT(fp->fs, FR_DISK_ERR); +#endif + fp->dsect = dsc; + } + } + } + } else +#endif + + /* Normal Seek */ + { + DWORD clst, bcs, nsect, ifptr; + + if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ +#if !_FS_READONLY + && !(fp->flag & FA_WRITE) +#endif + ) ofs = fp->fsize; + + ifptr = fp->fptr; + fp->fptr = nsect = 0; + if (ofs) { + bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ + if (ifptr > 0 && + (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ + fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ + ofs -= fp->fptr; + clst = fp->clust; + } else { /* When seek to back cluster, */ + clst = fp->sclust; /* start from the first cluster */ +#if !_FS_READONLY + if (clst == 0) { /* If no cluster chain, create a new chain */ + clst = create_chain(fp->fs, 0); + if (clst == 1) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->sclust = clst; + } +#endif + fp->clust = clst; + } + if (clst != 0) { + while (ofs > bcs) { /* Cluster following loop */ +#if !_FS_READONLY + if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ + clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ + if (clst == 0) { /* When disk gets full, clip file size */ + ofs = bcs; break; + } + } else +#endif + clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR); + fp->clust = clst; + fp->fptr += bcs; + ofs -= bcs; + } + fp->fptr += ofs; + if (ofs % SS(fp->fs)) { + nsect = clust2sect(fp->fs, clst); /* Current sector */ + if (!nsect) ABORT(fp->fs, FR_INT_ERR); + nsect += ofs / SS(fp->fs); + } + } + } + if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */ +#if !_FS_TINY +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */ + ABORT(fp->fs, FR_DISK_ERR); +#endif + fp->dsect = nsect; + } +#if !_FS_READONLY + if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */ + fp->fsize = fp->fptr; + fp->flag |= FA__WRITTEN; + } +#endif + } + + LEAVE_FF(fp->fs, res); +} + + + +#if _FS_MINIMIZE <= 1 +/*-----------------------------------------------------------------------*/ +/* Create a Directroy Object */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_opendir ( + DIR *dj, /* Pointer to directory object to create */ + const TCHAR *path /* Pointer to the directory path */ +) +{ + FRESULT res; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj->fs, 0); + if (res == FR_OK) { + INIT_BUF(*dj); + res = follow_path(dj, path); /* Follow the path to the directory */ + FREE_BUF(); + if (res == FR_OK) { /* Follow completed */ + if (dj->dir) { /* It is not the root dir */ + if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */ + dj->sclust = LD_CLUST(dj->dir); + } else { /* The object is not a directory */ + res = FR_NO_PATH; + } + } + if (res == FR_OK) { + dj->id = dj->fs->id; + res = dir_sdi(dj, 0); /* Rewind dir */ + } + } + if (res == FR_NO_FILE) res = FR_NO_PATH; + } + + LEAVE_FF(dj->fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Read Directory Entry in Sequense */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_readdir ( + DIR *dj, /* Pointer to the open directory object */ + FILINFO *fno /* Pointer to file information to return */ +) +{ + FRESULT res; + DEF_NAMEBUF; + + + res = validate(dj->fs, dj->id); /* Check validity of the object */ + if (res == FR_OK) { + if (!fno) { + res = dir_sdi(dj, 0); /* Rewind the directory object */ + } else { + INIT_BUF(*dj); + res = dir_read(dj); /* Read an directory item */ + if (res == FR_NO_FILE) { /* Reached end of dir */ + dj->sect = 0; + res = FR_OK; + } + if (res == FR_OK) { /* A valid entry is found */ + get_fileinfo(dj, fno); /* Get the object information */ + res = dir_next(dj, 0); /* Increment index for next */ + if (res == FR_NO_FILE) { + dj->sect = 0; + res = FR_OK; + } + } + FREE_BUF(); + } + } + + LEAVE_FF(dj->fs, res); +} + +FRESULT f_seekdir( + DIR *dj, /* Pointer to the open directory object */ + int offset /* the seek offset */ +) +{ + return dir_sdi(dj, offset); /* seek directory index to offset */ +} + + +#if _FS_MINIMIZE == 0 +/*-----------------------------------------------------------------------*/ +/* Get File Status */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_stat ( + const TCHAR *path, /* Pointer to the file path */ + FILINFO *fno /* Pointer to file information to return */ +) +{ + FRESULT res; + DIR dj; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 0); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the file path */ + if (res == FR_OK) { /* Follow completed */ + if (dj.dir) /* Found an object */ + get_fileinfo(&dj, fno); + else /* It is root dir */ + res = FR_INVALID_NAME; + } + FREE_BUF(); + } + + LEAVE_FF(dj.fs, res); +} + + + +#if !_FS_READONLY +/*-----------------------------------------------------------------------*/ +/* Get Number of Free Clusters */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_getfree ( + const TCHAR *path, /* Pointer to the logical drive number (root dir) */ + DWORD *nclst, /* Pointer to the variable to return number of free clusters */ + FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */ +) +{ + FRESULT res; + DWORD n, clst, sect, stat; + UINT i; + BYTE fat, *p; + + + /* Get drive number */ + res = chk_mounted(&path, fatfs, 0); + if (res == FR_OK) { + /* If free_clust is valid, return it without full cluster scan */ + if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) { + *nclst = (*fatfs)->free_clust; + } else { + /* Get number of free clusters */ + fat = (*fatfs)->fs_type; + n = 0; + if (fat == FS_FAT12) { + clst = 2; + do { + stat = get_fat(*fatfs, clst); + if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } + if (stat == 1) { res = FR_INT_ERR; break; } + if (stat == 0) n++; + } while (++clst < (*fatfs)->n_fatent); + } else { + clst = (*fatfs)->n_fatent; + sect = (*fatfs)->fatbase; + i = 0; p = 0; + do { + if (!i) { + res = move_window(*fatfs, sect++); + if (res != FR_OK) break; + p = (*fatfs)->win; + i = SS(*fatfs); + } + if (fat == FS_FAT16) { + if (LD_WORD(p) == 0) n++; + p += 2; i -= 2; + } else { + if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++; + p += 4; i -= 4; + } + } while (--clst); + } + (*fatfs)->free_clust = n; + if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1; + *nclst = n; + } + } + LEAVE_FF(*fatfs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Truncate File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_truncate ( + FIL *fp /* Pointer to the file object */ +) +{ + FRESULT res; + DWORD ncl; + + + res = validate(fp->fs, fp->id); /* Check validity of the object */ + if (res == FR_OK) { + if (fp->flag & FA__ERROR) { /* Check abort flag */ + res = FR_INT_ERR; + } else { + if (!(fp->flag & FA_WRITE)) /* Check access mode */ + res = FR_DENIED; + } + } + if (res == FR_OK) { + if (fp->fsize > fp->fptr) { + fp->fsize = fp->fptr; /* Set file size to current R/W point */ + fp->flag |= FA__WRITTEN; + if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ + res = remove_chain(fp->fs, fp->sclust); + fp->sclust = 0; + } else { /* When truncate a part of the file, remove remaining clusters */ + ncl = get_fat(fp->fs, fp->clust); + res = FR_OK; + if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; + if (ncl == 1) res = FR_INT_ERR; + if (res == FR_OK && ncl < fp->fs->n_fatent) { + res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF); + if (res == FR_OK) res = remove_chain(fp->fs, ncl); + } + } + } + if (res != FR_OK) fp->flag |= FA__ERROR; + } + + LEAVE_FF(fp->fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Delete a File or Directory */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_unlink ( + const TCHAR *path /* Pointer to the file or directory path */ +) +{ + FRESULT res; + DIR dj, sdj; + BYTE *dir; + DWORD dclst; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 1); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the file path */ + if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) + res = FR_INVALID_NAME; /* Cannot remove dot entry */ +#if _FS_SHARE + if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */ +#endif + if (res == FR_OK) { /* The object is accessible */ + dir = dj.dir; + if (!dir) { + res = FR_INVALID_NAME; /* Cannot remove the start directory */ + } else { + if (dir[DIR_Attr] & AM_RDO) + res = FR_DENIED; /* Cannot remove R/O object */ + } + dclst = LD_CLUST(dir); + if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */ + if (dclst < 2) { + res = FR_INT_ERR; + } else { + mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */ + sdj.sclust = dclst; + res = dir_sdi(&sdj, 2); /* Exclude dot entries */ + if (res == FR_OK) { + res = dir_read(&sdj); + if (res == FR_OK /* Not empty dir */ +#if _FS_RPATH + || dclst == sdj.fs->cdir /* Current dir */ +#endif + ) res = FR_DENIED; + if (res == FR_NO_FILE) res = FR_OK; /* Empty */ + } + } + } + if (res == FR_OK) { + res = dir_remove(&dj); /* Remove the directory entry */ + if (res == FR_OK) { + if (dclst) /* Remove the cluster chain if exist */ + res = remove_chain(dj.fs, dclst); + if (res == FR_OK) res = sync(dj.fs); + } + } + } + FREE_BUF(); + } + LEAVE_FF(dj.fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Create a Directory */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_mkdir ( + const TCHAR *path /* Pointer to the directory path */ +) +{ + FRESULT res; + DIR dj; + BYTE *dir, n; + DWORD dsc, dcl, pcl, tim = get_fattime(); + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 1); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the file path */ + if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */ + if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT)) + res = FR_INVALID_NAME; + if (res == FR_NO_FILE) { /* Can create a new directory */ + dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */ + res = FR_OK; + if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ + if (dcl == 1) res = FR_INT_ERR; + if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; + if (res == FR_OK) /* Flush FAT */ + res = move_window(dj.fs, 0); + if (res == FR_OK) { /* Initialize the new directory table */ + dsc = clust2sect(dj.fs, dcl); + dir = dj.fs->win; + mem_set(dir, 0, SS(dj.fs)); + mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */ + dir[DIR_Name] = '.'; + dir[DIR_Attr] = AM_DIR; + ST_DWORD(dir+DIR_WrtTime, tim); + ST_CLUST(dir, dcl); + mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */ + dir[33] = '.'; pcl = dj.sclust; + if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase) + pcl = 0; + ST_CLUST(dir+SZ_DIR, pcl); + for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */ + dj.fs->winsect = dsc++; + dj.fs->wflag = 1; + res = move_window(dj.fs, 0); + if (res != FR_OK) break; + mem_set(dir, 0, SS(dj.fs)); + } + } + if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */ + if (res != FR_OK) { + remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */ + } else { + dir = dj.dir; + dir[DIR_Attr] = AM_DIR; /* Attribute */ + ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */ + ST_CLUST(dir, dcl); /* Table start cluster */ + dj.fs->wflag = 1; + res = sync(dj.fs); + } + } + FREE_BUF(); + } + + LEAVE_FF(dj.fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Change Attribute */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_chmod ( + const TCHAR *path, /* Pointer to the file path */ + BYTE value, /* Attribute bits */ + BYTE mask /* Attribute mask to change */ +) +{ + FRESULT res; + DIR dj; + BYTE *dir; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 1); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the file path */ + FREE_BUF(); + if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) + res = FR_INVALID_NAME; + if (res == FR_OK) { + dir = dj.dir; + if (!dir) { /* Is it a root directory? */ + res = FR_INVALID_NAME; + } else { /* File or sub directory */ + mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ + dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ + dj.fs->wflag = 1; + res = sync(dj.fs); + } + } + } + + LEAVE_FF(dj.fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Change Timestamp */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_utime ( + const TCHAR *path, /* Pointer to the file/directory name */ + const FILINFO *fno /* Pointer to the time stamp to be set */ +) +{ + FRESULT res; + DIR dj; + BYTE *dir; + DEF_NAMEBUF; + + + res = chk_mounted(&path, &dj.fs, 1); + if (res == FR_OK) { + INIT_BUF(dj); + res = follow_path(&dj, path); /* Follow the file path */ + FREE_BUF(); + if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) + res = FR_INVALID_NAME; + if (res == FR_OK) { + dir = dj.dir; + if (!dir) { /* Root directory */ + res = FR_INVALID_NAME; + } else { /* File or sub-directory */ + ST_WORD(dir+DIR_WrtTime, fno->ftime); + ST_WORD(dir+DIR_WrtDate, fno->fdate); + dj.fs->wflag = 1; + res = sync(dj.fs); + } + } + } + + LEAVE_FF(dj.fs, res); +} + + + + +/*-----------------------------------------------------------------------*/ +/* Rename File/Directory */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_rename ( + const TCHAR *path_old, /* Pointer to the old name */ + const TCHAR *path_new /* Pointer to the new name */ +) +{ + FRESULT res; + DIR djo, djn; + BYTE buf[21], *dir; + DWORD dw; + DEF_NAMEBUF; + + + res = chk_mounted(&path_old, &djo.fs, 1); + if (res == FR_OK) { + djn.fs = djo.fs; + INIT_BUF(djo); + res = follow_path(&djo, path_old); /* Check old object */ + if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT)) + res = FR_INVALID_NAME; +#if _FS_SHARE + if (res == FR_OK) res = chk_lock(&djo, 2); +#endif + if (res == FR_OK) { /* Old object is found */ + if (!djo.dir) { /* Is root dir? */ + res = FR_NO_FILE; + } else { + mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */ + mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */ + res = follow_path(&djn, path_new); + if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */ + if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */ +/* Start critical section that any interruption or error can cause cross-link */ + res = dir_register(&djn); /* Register the new entry */ + if (res == FR_OK) { + dir = djn.dir; /* Copy object information except for name */ + mem_cpy(dir+13, buf+2, 19); + dir[DIR_Attr] = buf[0] | AM_ARC; + djo.fs->wflag = 1; + if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */ + dw = clust2sect(djn.fs, LD_CLUST(dir)); + if (!dw) { + res = FR_INT_ERR; + } else { + res = move_window(djn.fs, dw); + dir = djn.fs->win+SZ_DIR; /* .. entry */ + if (res == FR_OK && dir[1] == '.') { + dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust; + ST_CLUST(dir, dw); + djn.fs->wflag = 1; + } + } + } + if (res == FR_OK) { + res = dir_remove(&djo); /* Remove old entry */ + if (res == FR_OK) + res = sync(djo.fs); + } + } +/* End critical section */ + } + } + } + FREE_BUF(); + } + LEAVE_FF(djo.fs, res); +} + +#endif /* !_FS_READONLY */ +#endif /* _FS_MINIMIZE == 0 */ +#endif /* _FS_MINIMIZE <= 1 */ +#endif /* _FS_MINIMIZE <= 2 */ + + + +/*-----------------------------------------------------------------------*/ +/* Forward data to the stream directly (available on only tiny cfg) */ +/*-----------------------------------------------------------------------*/ +#if _USE_FORWARD && _FS_TINY + +FRESULT f_forward ( + FIL *fp, /* Pointer to the file object */ + UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ + UINT btr, /* Number of bytes to forward */ + UINT *bf /* Pointer to number of bytes forwarded */ +) +{ + FRESULT res; + DWORD remain, clst, sect; + UINT rcnt; + BYTE csect; + + + *bf = 0; /* Initialize byte counter */ + + res = validate(fp->fs, fp->id); /* Check validity of the object */ + if (res != FR_OK) LEAVE_FF(fp->fs, res); + if (fp->flag & FA__ERROR) /* Check error flag */ + LEAVE_FF(fp->fs, FR_INT_ERR); + if (!(fp->flag & FA_READ)) /* Check access mode */ + LEAVE_FF(fp->fs, FR_DENIED); + + remain = fp->fsize - fp->fptr; + if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ + + for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */ + fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) { + csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ + if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ + if (!csect) { /* On the cluster boundary? */ + clst = (fp->fptr == 0) ? /* On the top of the file? */ + fp->sclust : get_fat(fp->fs, fp->clust); + if (clst <= 1) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->clust = clst; /* Update current cluster */ + } + } + sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */ + if (!sect) ABORT(fp->fs, FR_INT_ERR); + sect += csect; + if (move_window(fp->fs, sect)) /* Move sector window */ + ABORT(fp->fs, FR_DISK_ERR); + fp->dsect = sect; + rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */ + if (rcnt > btr) rcnt = btr; + rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt); + if (!rcnt) ABORT(fp->fs, FR_INT_ERR); + } + + LEAVE_FF(fp->fs, FR_OK); +} +#endif /* _USE_FORWARD */ + + + +#if _USE_MKFS && !_FS_READONLY +/*-----------------------------------------------------------------------*/ +/* Create File System on the Drive */ +/*-----------------------------------------------------------------------*/ +#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */ +#define N_FATS 1 /* Number of FAT copies (1 or 2) */ + + +FRESULT f_mkfs ( + BYTE drv, /* Logical drive number */ + BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */ + UINT au /* Allocation unit size [bytes] */ +) +{ + static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0}; + static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512}; + BYTE fmt, md, *tbl; + DWORD n_clst, vs, n, wsect; + UINT i; + DWORD b_vol, b_fat, b_dir, b_data; /* Offset (LBA) */ + DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */ + FATFS *fs; + DSTATUS stat; + + + /* Check mounted drive and clear work area */ + if (drv >= _VOLUMES) return FR_INVALID_DRIVE; + fs = FatFs[drv]; + if (!fs) return FR_NOT_ENABLED; + fs->fs_type = 0; + drv = LD2PD(drv); + + /* Get disk statics */ + stat = disk_initialize(drv); + if (stat & STA_NOINIT) return FR_NOT_READY; + if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; +#if _MAX_SS != 512 /* Get disk sector size */ + if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) + return FR_DISK_ERR; +#endif + if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128) + return FR_DISK_ERR; + b_vol = (sfd) ? 0 : 63; /* Volume start sector */ + n_vol -= b_vol; + if (au & (au - 1)) au = 0; /* Check validity of the AU size */ + if (!au) { /* AU auto selection */ + vs = n_vol / (2000 / (SS(fs) / 512)); + for (i = 0; vs < vst[i]; i++) ; + au = cst[i]; + } + au /= SS(fs); /* Number of sectors per cluster */ + if (au == 0) au = 1; + if (au > 128) au = 128; + + /* Pre-compute number of clusters and FAT syb-type */ + n_clst = n_vol / au; + fmt = FS_FAT12; + if (n_clst >= MIN_FAT16) fmt = FS_FAT16; + if (n_clst >= MIN_FAT32) fmt = FS_FAT32; + + /* Determine offset and size of FAT structure */ + if (fmt == FS_FAT32) { + n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs); + n_rsv = 32; + n_dir = 0; + } else { + n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4; + n_fat = (n_fat + SS(fs) - 1) / SS(fs); + n_rsv = 1; + n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs); + } + b_fat = b_vol + n_rsv; /* FAT area start sector */ + b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */ + b_data = b_dir + n_dir; /* Data area start sector */ + if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */ + + /* Align data start sector to erase block boundary (for flash memory media) */ + if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1; + n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */ + n = (n - b_data) / N_FATS; + if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */ + n_rsv += n; + b_fat += n; + } else { /* FAT12/16: Expand FAT size */ + n_fat += n; + } + + /* Determine number of clusters and final check of validity of the FAT sub-type */ + n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au; + if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16) + || (fmt == FS_FAT32 && n_clst < MIN_FAT32)) + return FR_MKFS_ABORTED; + + /* Create partition table if required */ + if (sfd) { /* No patition table (SFD) */ + md = 0xF0; + } else { /* With patition table (FDISK) */ + DWORD n_disk = b_vol + n_vol; + + mem_set(fs->win, 0, SS(fs)); + tbl = fs->win+MBR_Table; + ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */ + if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */ + n_disk = n_disk / 63 / 255; + tbl[7] = (BYTE)n_disk; + tbl[6] = (BYTE)((n_disk >> 2) | 63); + } else { + ST_WORD(&tbl[6], 0xFFFF); /* CHS saturated */ + } + tbl[5] = 254; + if (fmt != FS_FAT32) /* System ID */ + tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06; + else + tbl[4] = 0x0c; + ST_DWORD(tbl+8, 63); /* Partition start in LBA */ + ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */ + ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */ + if (disk_write(drv, fs->win, 0, 1) != RES_OK) /* Put the MBR into first physical sector */ + return FR_DISK_ERR; + md = 0xF8; + } + + /* Create volume boot record */ + tbl = fs->win; /* Clear sector */ + mem_set(tbl, 0, SS(fs)); + mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */ + i = SS(fs); /* Sector size */ + ST_WORD(tbl+BPB_BytsPerSec, i); + tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */ + ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */ + tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */ + i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */ + ST_WORD(tbl+BPB_RootEntCnt, i); + if (n_vol < 0x10000) { /* Number of total sectors */ + ST_WORD(tbl+BPB_TotSec16, n_vol); + } else { + ST_DWORD(tbl+BPB_TotSec32, n_vol); + } + tbl[BPB_Media] = md; /* Media descriptor */ + ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */ + ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */ + ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */ + n = get_fattime(); /* Use current time as VSN */ + if (fmt == FS_FAT32) { + ST_DWORD(tbl+BS_VolID32, n); /* VSN */ + ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */ + ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */ + ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */ + ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */ + tbl[BS_DrvNum32] = 0x80; /* Drive number */ + tbl[BS_BootSig32] = 0x29; /* Extended boot signature */ + mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */ + } else { + ST_DWORD(tbl+BS_VolID, n); /* VSN */ + ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */ + tbl[BS_DrvNum] = 0x80; /* Drive number */ + tbl[BS_BootSig] = 0x29; /* Extended boot signature */ + mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */ + } + ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */ + if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Write VBR */ + return FR_DISK_ERR; + if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */ + disk_write(drv, tbl, b_vol + 6, 1); + + /* Initialize FAT area */ + wsect = b_fat; + for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */ + mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */ + n = md; /* Media descriptor byte */ + if (fmt != FS_FAT32) { + n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00; + ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */ + } else { + n |= 0xFFFFFF00; + ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */ + ST_DWORD(tbl+4, 0xFFFFFFFF); + ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */ + } + if (disk_write(drv, tbl, wsect++, 1) != RES_OK) + return FR_DISK_ERR; + mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */ + for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */ + if (disk_write(drv, tbl, wsect++, 1) != RES_OK) + return FR_DISK_ERR; + } + } + + /* Initialize root directory */ + i = (fmt == FS_FAT32) ? au : n_dir; + do { + if (disk_write(drv, tbl, wsect++, 1) != RES_OK) + return FR_DISK_ERR; + } while (--i); + +#if _USE_ERASE /* Erase data area if needed */ + { + DWORD eb[2]; + + eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1; + disk_ioctl(drv, CTRL_ERASE_SECTOR, eb); + } +#endif + + /* Create FSInfo if needed */ + if (fmt == FS_FAT32) { + ST_DWORD(tbl+FSI_LeadSig, 0x41615252); + ST_DWORD(tbl+FSI_StrucSig, 0x61417272); + ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */ + ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */ + ST_WORD(tbl+BS_55AA, 0xAA55); + disk_write(drv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */ + disk_write(drv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */ + } + + return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR; +} + +#endif /* _USE_MKFS && !_FS_READONLY */ + + + + +#if _USE_STRFUNC +/*-----------------------------------------------------------------------*/ +/* Get a string from the file */ +/*-----------------------------------------------------------------------*/ +TCHAR* f_gets ( + TCHAR* buff, /* Pointer to the string buffer to read */ + int len, /* Size of string buffer (characters) */ + FIL* fil /* Pointer to the file object */ +) +{ + int n = 0; + TCHAR c, *p = buff; + BYTE s[2]; + UINT rc; + + + while (n < len - 1) { /* Read bytes until buffer gets filled */ + f_read(fil, s, 1, &rc); + if (rc != 1) break; /* Break on EOF or error */ + c = s[0]; +#if _LFN_UNICODE /* Read a character in UTF-8 encoding */ + if (c >= 0x80) { + if (c < 0xC0) continue; /* Skip stray trailer */ + if (c < 0xE0) { /* Two-byte sequense */ + f_read(fil, s, 1, &rc); + if (rc != 1) break; + c = ((c & 0x1F) << 6) | (s[0] & 0x3F); + if (c < 0x80) c = '?'; + } else { + if (c < 0xF0) { /* Three-byte sequense */ + f_read(fil, s, 2, &rc); + if (rc != 2) break; + c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F); + if (c < 0x800) c = '?'; + } else { /* Reject four-byte sequense */ + c = '?'; + } + } + } +#endif +#if _USE_STRFUNC >= 2 + if (c == '\r') continue; /* Strip '\r' */ +#endif + *p++ = c; + n++; + if (c == '\n') break; /* Break on EOL */ + } + *p = 0; + return n ? buff : 0; /* When no data read (eof or error), return with error. */ +} + + + +#if !_FS_READONLY +#include +/*-----------------------------------------------------------------------*/ +/* Put a character to the file */ +/*-----------------------------------------------------------------------*/ +int f_putc ( + TCHAR c, /* A character to be output */ + FIL* fil /* Pointer to the file object */ +) +{ + UINT bw, btw; + BYTE s[3]; + + +#if _USE_STRFUNC >= 2 + if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */ +#endif + +#if _LFN_UNICODE /* Write the character in UTF-8 encoding */ + if (c < 0x80) { /* 7-bit */ + s[0] = (BYTE)c; + btw = 1; + } else { + if (c < 0x800) { /* 11-bit */ + s[0] = (BYTE)(0xC0 | (c >> 6)); + s[1] = (BYTE)(0x80 | (c & 0x3F)); + btw = 2; + } else { /* 16-bit */ + s[0] = (BYTE)(0xE0 | (c >> 12)); + s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F)); + s[2] = (BYTE)(0x80 | (c & 0x3F)); + btw = 3; + } + } +#else /* Write the character without conversion */ + s[0] = (BYTE)c; + btw = 1; +#endif + f_write(fil, s, btw, &bw); /* Write the char to the file */ + return (bw == btw) ? 1 : EOF; /* Return the result */ +} + + + + +/*-----------------------------------------------------------------------*/ +/* Put a string to the file */ +/*-----------------------------------------------------------------------*/ +int f_puts ( + const TCHAR* str, /* Pointer to the string to be output */ + FIL* fil /* Pointer to the file object */ +) +{ + int n; + + + for (n = 0; *str; str++, n++) { + if (f_putc(*str, fil) == EOF) return EOF; + } + return n; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Put a formatted string to the file */ +/*-----------------------------------------------------------------------*/ +int f_printf ( + FIL* fil, /* Pointer to the file object */ + const TCHAR* str, /* Pointer to the format string */ + ... /* Optional arguments... */ +) +{ + va_list arp; + BYTE f, r; + UINT i, j, w; + ULONG v; + TCHAR c, d, s[16], *p; + int res, cc; + + + va_start(arp, str); + + for (cc = res = 0; cc != EOF; res += cc) { + c = *str++; + if (c == 0) break; /* End of string */ + if (c != '%') { /* Non escape character */ + cc = f_putc(c, fil); + if (cc != EOF) cc = 1; + continue; + } + w = f = 0; + c = *str++; + if (c == '0') { /* Flag: '0' padding */ + f = 1; c = *str++; + } else { + if (c == '-') { /* Flag: left justified */ + f = 2; c = *str++; + } + } + while (IsDigit(c)) { /* Precision */ + w = w * 10 + c - '0'; + c = *str++; + } + if (c == 'l' || c == 'L') { /* Prefix: Size is long int */ + f |= 4; c = *str++; + } + if (!c) break; + d = c; + if (IsLower(d)) d -= 0x20; + switch (d) { /* Type is... */ + case 'S' : /* String */ + p = va_arg(arp, TCHAR*); + for (j = 0; p[j]; j++) ; + res = 0; + while (!(f & 2) && j++ < w) res += (cc = f_putc(' ', fil)); + res += (cc = f_puts(p, fil)); + while (j++ < w) res += (cc = f_putc(' ', fil)); + if (cc != EOF) cc = res; + continue; + case 'C' : /* Character */ + cc = f_putc((TCHAR)va_arg(arp, int), fil); continue; + case 'B' : /* Binary */ + r = 2; break; + case 'O' : /* Octal */ + r = 8; break; + case 'D' : /* Signed decimal */ + case 'U' : /* Unsigned decimal */ + r = 10; break; + case 'X' : /* Hexdecimal */ + r = 16; break; + default: /* Unknown type (passthrough) */ + cc = f_putc(c, fil); continue; + } + + /* Get an argument and put it in numeral */ + v = (f & 4) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int)); + if (d == 'D' && (v & 0x80000000)) { + v = 0 - v; + f |= 8; + } + i = 0; + do { + d = (TCHAR)(v % r); v /= r; + if (d > 9) d += (c == 'x') ? 0x27 : 0x07; + s[i++] = d + '0'; + } while (v && i < sizeof(s) / sizeof(s[0])); + if (f & 8) s[i++] = '-'; + j = i; d = (f & 1) ? '0' : ' '; + res = 0; + while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil)); + do res += (cc = f_putc(s[--i], fil)); while(i); + while (j++ < w) res += (cc = f_putc(' ', fil)); + if (cc != EOF) cc = res; + } + + va_end(arp); + return (cc == EOF) ? cc : res; +} + +#endif /* !_FS_READONLY */ +#endif /* _USE_STRFUNC */ + +#include +#if _VOLUMES > 1 +int elm_get_vol(FATFS *fat) +{ + int vol; + + for (vol = 0; vol < _VOLUMES; vol ++) + { + if (FatFs[vol] == fat) return vol; + } + + return -1; +} +#endif -- GitLab