cifsproto.h 19.0 KB
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/*
 *   fs/cifs/cifsproto.h
 *
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 *   Copyright (c) International Business Machines  Corp., 2002,2008
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 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
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 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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 */
#ifndef _CIFSPROTO_H
#define _CIFSPROTO_H
#include <linux/nls.h>

struct statfs;
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struct smb_vol;
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/*
 *****************************************************************
 * All Prototypes
 *****************************************************************
 */

extern struct smb_hdr *cifs_buf_get(void);
extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
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extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
			unsigned int /* length */);
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extern unsigned int _GetXid(void);
extern void _FreeXid(unsigned int);
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#define GetXid()						\
({								\
	int __xid = (int)_GetXid();				\
	cFYI(1, "CIFS VFS: in %s as Xid: %d with uid: %d",	\
	     __func__, __xid, current_fsuid());			\
	__xid;							\
})

#define FreeXid(curr_xid)					\
do {								\
	_FreeXid(curr_xid);					\
	cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d",	\
	     __func__, curr_xid, (int)rc);			\
} while (0)
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extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
extern void cifs_destroy_idmaptrees(void);
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extern char *build_path_from_dentry(struct dentry *);
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extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb,
					struct cifsTconInfo *tcon);
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extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
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extern char *cifs_compose_mount_options(const char *sb_mountdata,
		const char *fullpath, const struct dfs_info3_param *ref,
		char **devname);
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/* extern void renew_parental_timestamps(struct dentry *direntry);*/
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extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
					struct TCP_Server_Info *server);
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extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
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extern int cifs_call_async(struct TCP_Server_Info *server,
			   struct smb_hdr *in_buf, mid_callback_t *callback,
			   void *cbdata);
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extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
			struct smb_hdr * /* input */ ,
			struct smb_hdr * /* out */ ,
			int * /* bytes returned */ , const int long_op);
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extern int SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
			struct smb_hdr *in_buf, int flags);
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extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
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			struct kvec *, int /* nvec to send */,
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			int * /* type of buf returned */ , const int flags);
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extern int SendReceiveBlockingLock(const unsigned int xid,
			struct cifsTconInfo *ptcon,
			struct smb_hdr *in_buf ,
			struct smb_hdr *out_buf,
			int *bytes_returned);
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extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
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extern bool is_valid_oplock_break(struct smb_hdr *smb,
				  struct TCP_Server_Info *);
extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
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extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
			    unsigned int bytes_written);
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extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
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extern unsigned int smbCalcSize(struct smb_hdr *ptr);
extern int decode_negTokenInit(unsigned char *security_blob, int length,
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			struct TCP_Server_Info *server);
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extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
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extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
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extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
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				const unsigned short int port);
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extern int map_smb_to_linux_error(struct smb_hdr *smb, int logErr);
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extern void header_assemble(struct smb_hdr *, char /* command */ ,
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			    const struct cifsTconInfo *, int /* length of
			    fixed section (word count) in two byte units */);
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extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
				struct cifsSesInfo *ses,
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				void **request_buf);
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extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
			     const struct nls_table *nls_cp);
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extern __u16 GetNextMid(struct TCP_Server_Info *server);
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extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
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extern u64 cifs_UnixTimeToNT(struct timespec);
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extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
				      int offset);
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extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
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extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
				struct file *file, struct tcon_link *tlink,
				__u32 oplock);
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extern int cifs_posix_open(char *full_path, struct inode **pinode,
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				struct super_block *sb,
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				int mode, unsigned int f_flags,
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				__u32 *poplock, __u16 *pnetfid, int xid);
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void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
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extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
				     FILE_UNIX_BASIC_INFO *info,
				     struct cifs_sb_info *cifs_sb);
extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
extern struct inode *cifs_iget(struct super_block *sb,
			       struct cifs_fattr *fattr);

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extern int cifs_get_file_info(struct file *filp);
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extern int cifs_get_inode_info(struct inode **pinode,
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			const unsigned char *search_path,
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			FILE_ALL_INFO *pfile_info,
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			struct super_block *sb, int xid, const __u16 *pfid);
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extern int cifs_get_file_info_unix(struct file *filp);
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extern int cifs_get_inode_info_unix(struct inode **pinode,
			const unsigned char *search_path,
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			struct super_block *sb, int xid);
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extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
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			      struct cifs_fattr *fattr, struct inode *inode,
			      const char *path, const __u16 *pfid);
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extern int mode_to_cifs_acl(struct inode *inode, const char *path, __u64);
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extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
					const char *, u32 *);
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extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
				const char *);
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extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
			const char *);
extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
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extern void cifs_dfs_release_automount_timer(void);
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void cifs_proc_init(void);
void cifs_proc_clean(void);

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extern int cifs_negotiate_protocol(unsigned int xid,
				  struct cifsSesInfo *ses);
extern int cifs_setup_session(unsigned int xid, struct cifsSesInfo *ses,
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			struct nls_table *nls_info);
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extern int CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses);

extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
			const char *tree, struct cifsTconInfo *tcon,
			const struct nls_table *);

extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
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		const char *searchName, const struct nls_table *nls_codepage,
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		__u16 *searchHandle, struct cifs_search_info *psrch_inf,
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		int map, const char dirsep);
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extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
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		__u16 searchHandle, struct cifs_search_info *psrch_inf);
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extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
			const __u16 search_handle);

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extern int CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon,
			u16 netfid, FILE_ALL_INFO *pFindData);
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extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
			const unsigned char *searchName,
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			FILE_ALL_INFO *findData,
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			int legacy /* whether to use old info level */,
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			const struct nls_table *nls_codepage, int remap);
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extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
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			const unsigned char *searchName,
			FILE_ALL_INFO *findData,
			const struct nls_table *nls_codepage, int remap);
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extern int CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
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extern int CIFSSMBUnixQPathInfo(const int xid,
			struct cifsTconInfo *tcon,
			const unsigned char *searchName,
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			FILE_UNIX_BASIC_INFO *pFindData,
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			const struct nls_table *nls_codepage, int remap);
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extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
			const unsigned char *searchName,
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			struct dfs_info3_param **target_nodes,
			unsigned int *number_of_nodes_in_array,
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			const struct nls_table *nls_codepage, int remap);
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extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
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			const char *old_path,
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			const struct nls_table *nls_codepage,
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			unsigned int *pnum_referrals,
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			struct dfs_info3_param **preferrals,
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			int remap);
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extern void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
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				 struct super_block *sb, struct smb_vol *vol);
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extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
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			struct kstatfs *FSData);
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extern int SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon,
			struct kstatfs *FSData);
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extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
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			__u64 cap);

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extern int CIFSSMBQFSAttributeInfo(const int xid,
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			struct cifsTconInfo *tcon);
extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);
extern int CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon);
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extern int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
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			struct kstatfs *FSData);
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extern int CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon,
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			const char *fileName, const FILE_BASIC_INFO *data,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
			const FILE_BASIC_INFO *data, __u16 fid,
			__u32 pid_of_opener);
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extern int CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
			bool delete_file, __u16 fid, __u32 pid_of_opener);
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#if 0
extern int CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon,
			char *fileName, __u16 dos_attributes,
			const struct nls_table *nls_codepage);
#endif /* possibly unneeded function */
extern int CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon,
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			const char *fileName, __u64 size,
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			bool setAllocationSizeFlag,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
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			 __u64 size, __u16 fileHandle, __u32 opener_pid,
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			bool AllocSizeFlag);
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struct cifs_unix_set_info_args {
	__u64	ctime;
	__u64	atime;
	__u64	mtime;
	__u64	mode;
	__u64	uid;
	__u64	gid;
	dev_t	device;
};

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extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon,
				  const struct cifs_unix_set_info_args *args,
				  u16 fid, u32 pid_of_opener);

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extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *pTcon,
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			char *fileName,
			const struct cifs_unix_set_info_args *args,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
			const char *newName,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
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			const char *name, const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon,
			const char *name, __u16 type,
			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
			const char *name,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
			const char *fromName, const char *toName,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
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			int netfid, const char *target_name,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSCreateHardLink(const int xid,
			struct cifsTconInfo *tcon,
			const char *fromName, const char *toName,
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			const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSUnixCreateHardLink(const int xid,
			struct cifsTconInfo *tcon,
			const char *fromName, const char *toName,
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			const struct nls_table *nls_codepage,
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			int remap_special_chars);
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extern int CIFSUnixCreateSymLink(const int xid,
			struct cifsTconInfo *tcon,
			const char *fromName, const char *toName,
			const struct nls_table *nls_codepage);
extern int CIFSSMBUnixQuerySymLink(const int xid,
			struct cifsTconInfo *tcon,
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			const unsigned char *searchName, char **syminfo,
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			const struct nls_table *nls_codepage);
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#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
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extern int CIFSSMBQueryReparseLinkInfo(const int xid,
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			struct cifsTconInfo *tcon,
			const unsigned char *searchName,
			char *symlinkinfo, const int buflen, __u16 fid,
			const struct nls_table *nls_codepage);
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#endif /* temporarily unused until cifs_symlink fixed */
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extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
			const char *fileName, const int disposition,
			const int access_flags, const int omode,
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			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
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			const struct nls_table *nls_codepage, int remap);
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extern int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
			const char *fileName, const int disposition,
			const int access_flags, const int omode,
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			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
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			const struct nls_table *nls_codepage, int remap);
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extern int CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon,
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			u32 posix_flags, __u64 mode, __u16 *netfid,
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			FILE_UNIX_BASIC_INFO *pRetData,
			__u32 *pOplock, const char *name,
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			const struct nls_table *nls_codepage, int remap);
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extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
			const int smb_file_id);

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extern int CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon,
			const int smb_file_id);

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extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
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			const int netfid, unsigned int count,
			const __u64 lseek, unsigned int *nbytes, char **buf,
			int *return_buf_type);
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extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
			const int netfid, const unsigned int count,
			const __u64 lseek, unsigned int *nbytes,
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			const char *buf, const char __user *ubuf,
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			const int long_op);
extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
			const int netfid, const unsigned int count,
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			const __u64 offset, unsigned int *nbytes,
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			struct kvec *iov, const int nvec, const int long_op);
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extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
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			const unsigned char *searchName, __u64 *inode_number,
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			const struct nls_table *nls_codepage,
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			int remap_special_chars);
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extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
			const struct nls_table *cp, int mapChars);
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extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
			const __u16 netfid, const __u64 len,
			const __u64 offset, const __u32 numUnlock,
			const __u32 numLock, const __u8 lockType,
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			const bool waitFlag, const __u8 oplock_level);
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extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
			const __u16 smb_file_id, const int get_flag,
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			const __u64 len, struct file_lock *,
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			const __u16 lock_type, const bool waitFlag);
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extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
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extern int CIFSSMBEcho(struct TCP_Server_Info *server);
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extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);

extern struct cifsSesInfo *sesInfoAlloc(void);
extern void sesInfoFree(struct cifsSesInfo *);
extern struct cifsTconInfo *tconInfoAlloc(void);
extern void tconInfoFree(struct cifsTconInfo *);

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extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
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extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
			  __u32 *);
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extern int cifs_verify_signature(struct smb_hdr *,
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				 struct TCP_Server_Info *server,
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				__u32 expected_sequence_number);
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extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
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extern int setup_ntlm_response(struct cifsSesInfo *);
extern int setup_ntlmv2_rsp(struct cifsSesInfo *, const struct nls_table *);
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extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
extern int calc_seckey(struct cifsSesInfo *);

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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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extern int calc_lanman_hash(const char *password, const char *cryptkey,
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				bool encrypt, char *lnm_session_key);
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#endif /* CIFS_WEAK_PW_HASH */
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#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
			const int notify_subdirs, const __u16 netfid,
			__u32 filter, struct file *file, int multishot,
			const struct nls_table *nls_codepage);
#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
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extern int CIFSSMBCopy(int xid,
			struct cifsTconInfo *source_tcon,
			const char *fromName,
			const __u16 target_tid,
			const char *toName, const int flags,
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			const struct nls_table *nls_codepage,
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			int remap_special_chars);
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extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
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			const unsigned char *searchName,
			const unsigned char *ea_name, char *EAData,
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			size_t bufsize, const struct nls_table *nls_codepage,
			int remap_special_chars);
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extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
		const char *fileName, const char *ea_name,
		const void *ea_value, const __u16 ea_value_len,
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		const struct nls_table *nls_codepage, int remap_special_chars);
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extern int CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon,
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			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
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extern int CIFSSMBSetCIFSACL(const int, struct cifsTconInfo *, __u16,
			struct cifs_ntsd *, __u32);
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extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
		const unsigned char *searchName,
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		char *acl_inf, const int buflen, const int acl_type,
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		const struct nls_table *nls_codepage, int remap_special_chars);
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extern int CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
		const unsigned char *fileName,
		const char *local_acl, const int buflen, const int acl_type,
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		const struct nls_table *nls_codepage, int remap_special_chars);
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extern int CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
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			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
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extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
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extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
		const unsigned char *path,
		struct cifs_sb_info *cifs_sb, int xid);
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extern int mdfour(unsigned char *, unsigned char *, int);
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
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extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
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			unsigned char *p24);
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#endif			/* _CIFSPROTO_H */