internal.h 3.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11
/* fs/ internal definitions
 *
 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

N
Nick Piggin 已提交
12 13
#include <linux/lglock.h>

14
struct super_block;
15
struct file_system_type;
16
struct linux_binprm;
17
struct path;
18
struct mount;
19

20 21 22
/*
 * block_dev.c
 */
23
#ifdef CONFIG_BLOCK
24 25
extern void __init bdev_cache_init(void);

26 27
extern int __sync_blockdev(struct block_device *bdev, int wait);

28
#else
29 30 31
static inline void bdev_cache_init(void)
{
}
32

33 34 35 36
static inline int __sync_blockdev(struct block_device *bdev, int wait)
{
	return 0;
}
37
#endif
38

39 40 41 42 43
/*
 * char_dev.c
 */
extern void __init chrdev_init(void);

D
David Howells 已提交
44 45 46 47 48
/*
 * namei.c
 */
extern int __inode_permission(struct inode *, int);

49 50 51 52
/*
 * namespace.c
 */
extern int copy_mount_options(const void __user *, unsigned long *);
53
extern int copy_mount_string(const void __user *, char **);
54

55
extern struct vfsmount *lookup_mnt(struct path *);
56
extern int finish_automount(struct vfsmount *, struct path *);
57

58
extern int sb_prepare_remount_readonly(struct super_block *);
A
Al Viro 已提交
59

60
extern void __init mnt_init(void);
61

62
extern struct lglock vfsmount_lock;
N
Nick Piggin 已提交
63

64 65 66 67
extern int __mnt_want_write(struct vfsmount *);
extern int __mnt_want_write_file(struct file *);
extern void __mnt_drop_write(struct vfsmount *);
extern void __mnt_drop_write_file(struct file *);
A
Al Viro 已提交
68

69 70 71
/*
 * fs_struct.c
 */
72
extern void chroot_fs_refs(const struct path *, const struct path *);
73 74 75 76

/*
 * file_table.c
 */
N
Nick Piggin 已提交
77 78
extern void file_sb_list_add(struct file *f, struct super_block *sb);
extern void file_sb_list_del(struct file *f);
79
extern void mark_files_ro(struct super_block *);
80
extern struct file *get_empty_filp(void);
A
Al Viro 已提交
81 82 83 84 85

/*
 * super.c
 */
extern int do_remount_sb(struct super_block *, int, void *, int);
86
extern bool grab_super_passive(struct super_block *sb);
87 88
extern struct dentry *mount_fs(struct file_system_type *,
			       int, const char *, void *);
A
Al Viro 已提交
89
extern struct super_block *user_get_super(dev_t);
90 91 92 93

/*
 * open.c
 */
94 95
struct open_flags {
	int open_flag;
96
	umode_t mode;
97 98
	int acc_mode;
	int intent;
99
	int lookup_flags;
100
};
101
extern struct file *do_filp_open(int dfd, struct filename *pathname,
102
		const struct open_flags *op);
A
Al Viro 已提交
103
extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
104
		const char *, const struct open_flags *);
A
Al Viro 已提交
105

106 107
extern long do_handle_open(int mountdirfd,
			   struct file_handle __user *ufh, int open_flag);
M
Miklos Szeredi 已提交
108
extern int open_check_o_direct(struct file *f);
109

A
Al Viro 已提交
110 111 112
/*
 * inode.c
 */
113
extern spinlock_t inode_sb_list_lock;
114
extern void inode_add_lru(struct inode *inode);
115

116 117 118 119 120
/*
 * fs-writeback.c
 */
extern void inode_wb_list_del(struct inode *inode);

121
extern int get_nr_dirty_inodes(void);
A
Al Viro 已提交
122
extern void evict_inodes(struct super_block *);
123
extern int invalidate_inodes(struct super_block *, bool);
124 125 126 127 128

/*
 * dcache.c
 */
extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
129 130 131 132 133

/*
 * read_write.c
 */
extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
134

135 136 137 138 139 140
/*
 * splice.c
 */
extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
		loff_t *opos, size_t len, unsigned int flags);

141 142 143 144
/*
 * pipe.c
 */
extern const struct file_operations pipefifo_fops;