/*
   *   fs/cifs/cifsproto.h
   *

   *   Copyright (c) International Business Machines  Corp., 2002,2008

   *   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

   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

   */
  #ifndef _CIFSPROTO_H
  #define _CIFSPROTO_H
  #include <linux/nls.h>
  
  struct statfs;

  struct smb_vol;

  
  /*
   *****************************************************************
   * 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 *);

  extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  			unsigned int /* length */);

  extern unsigned int _GetXid(void);
  extern void _FreeXid(unsigned int);

  #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)

  extern int init_cifs_idmap(void);
  extern void exit_cifs_idmap(void);
  extern void cifs_destroy_idmaptrees(void);

  extern char *build_path_from_dentry(struct dentry *);

  extern char *cifs_build_path_to_root(struct smb_vol *vol,
  				     struct cifs_sb_info *cifs_sb,

  				     struct cifs_tcon *tcon);

  extern char *build_wildcard_path_from_dentry(struct dentry *direntry);

  extern char *cifs_compose_mount_options(const char *sb_mountdata,
  		const char *fullpath, const struct dfs_info3_param *ref,
  		char **devname);

  /* extern void renew_parental_timestamps(struct dentry *direntry);*/

  extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  					struct TCP_Server_Info *server);

  extern void DeleteMidQEntry(struct mid_q_entry *midEntry);

  extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,

  			   unsigned int nvec, mid_receive_t *receive,
  			   mid_callback_t *callback, void *cbdata,
  			   bool ignore_pend);

  extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,

  			struct smb_hdr * /* input */ ,
  			struct smb_hdr * /* out */ ,
  			int * /* bytes returned */ , const int long_op);

  extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,

  			struct smb_hdr *in_buf, int flags);

  extern int cifs_check_receive(struct mid_q_entry *mid,
  			struct TCP_Server_Info *server, bool log_error);

  extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,

  			struct kvec *, int /* nvec to send */,

  			int * /* type of buf returned */ , const int flags);

  extern int SendReceiveBlockingLock(const unsigned int xid,

  			struct cifs_tcon *ptcon,

  			struct smb_hdr *in_buf ,
  			struct smb_hdr *out_buf,
  			int *bytes_returned);

  extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);

  extern bool is_valid_oplock_break(struct smb_hdr *smb,
  				  struct TCP_Server_Info *);

  extern bool backup_cred(struct cifs_sb_info *);

  extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);

  extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
  			    unsigned int bytes_written);

  extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);

  extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);

  extern unsigned int smbCalcSize(struct smb_hdr *ptr);
  extern int decode_negTokenInit(unsigned char *security_blob, int length,

  			struct TCP_Server_Info *server);

  extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);

  extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);

  extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,

  				const unsigned short int port);

  extern int map_smb_to_linux_error(struct smb_hdr *smb, bool logErr);

  extern void header_assemble(struct smb_hdr *, char /* command */ ,

  			    const struct cifs_tcon *, int /* length of

  			    fixed section (word count) in two byte units */);

  extern int small_smb_init_no_tc(const int smb_cmd, const int wct,

  				struct cifs_ses *ses,

  				void **request_buf);

  extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,

  			     const struct nls_table *nls_cp);

  extern __u16 GetNextMid(struct TCP_Server_Info *server);

  extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);

  extern u64 cifs_UnixTimeToNT(struct timespec);

  extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
  				      int offset);

  extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);

  extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
  				struct file *file, struct tcon_link *tlink,
  				__u32 oplock);

  extern int cifs_posix_open(char *full_path, struct inode **pinode,

  				struct super_block *sb,

  				int mode, unsigned int f_flags,

  				__u32 *poplock, __u16 *pnetfid, int xid);

  void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);

  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);

  extern int cifs_get_file_info(struct file *filp);

  extern int cifs_get_inode_info(struct inode **pinode,

  			const unsigned char *search_path,

  			FILE_ALL_INFO *pfile_info,

  			struct super_block *sb, int xid, const __u16 *pfid);

  extern int cifs_get_file_info_unix(struct file *filp);

  extern int cifs_get_inode_info_unix(struct inode **pinode,
  			const unsigned char *search_path,

  			struct super_block *sb, int xid);

  extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,

  			      struct cifs_fattr *fattr, struct inode *inode,
  			      const char *path, const __u16 *pfid);

  extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
  					uid_t, gid_t);

  extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
  					const char *, u32 *);

  extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,

  				const char *, int);

  extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
  extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
  		     unsigned int to_read);
  extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
  		struct kvec *iov_orig, unsigned int nr_segs,
  		unsigned int to_read);

  extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
  			       struct cifs_sb_info *cifs_sb);
  extern int cifs_match_super(struct super_block *, void *);

  extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);

  extern struct smb_vol *cifs_get_volume_info(char *mount_data,
  					    const char *devname);

  extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);

  extern void cifs_umount(struct cifs_sb_info *);

  extern void cifs_dfs_release_automount_timer(void);

  void cifs_proc_init(void);
  void cifs_proc_clean(void);

  extern int cifs_negotiate_protocol(unsigned int xid,

  				  struct cifs_ses *ses);
  extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,

  			struct nls_table *nls_info);

  extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);

  extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
  			const char *tree, struct cifs_tcon *tcon,

  			const struct nls_table *);

  extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,

  		const char *searchName, const struct nls_table *nls_codepage,

  		__u16 *searchHandle, struct cifs_search_info *psrch_inf,

  		int map, const char dirsep);

  extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,

  		__u16 searchHandle, struct cifs_search_info *psrch_inf);

  extern int CIFSFindClose(const int, struct cifs_tcon *tcon,

  			const __u16 search_handle);

  extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,

  			u16 netfid, FILE_ALL_INFO *pFindData);

  extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,

  			const unsigned char *searchName,

  			FILE_ALL_INFO *findData,

  			int legacy /* whether to use old info level */,

  			const struct nls_table *nls_codepage, int remap);

  extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,

  			const unsigned char *searchName,
  			FILE_ALL_INFO *findData,
  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,

  			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);

  extern int CIFSSMBUnixQPathInfo(const int xid,

  			struct cifs_tcon *tcon,

  			const unsigned char *searchName,

  			FILE_UNIX_BASIC_INFO *pFindData,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,

  			const unsigned char *searchName,

  			struct dfs_info3_param **target_nodes,
  			unsigned int *number_of_nodes_in_array,

  			const struct nls_table *nls_codepage, int remap);

  extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,

  			const char *old_path,

  			const struct nls_table *nls_codepage,

  			unsigned int *pnum_referrals,

  			struct dfs_info3_param **preferrals,

  			int remap);

  extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,

  				 struct cifs_sb_info *cifs_sb,
  				 struct smb_vol *vol);

  extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,

  			__u64 cap);

  extern int CIFSSMBQFSAttributeInfo(const int xid,

  			struct cifs_tcon *tcon);
  extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
  extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
  extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,

  			struct kstatfs *FSData);

  extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,

  			const char *fileName, const FILE_BASIC_INFO *data,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,

  			const FILE_BASIC_INFO *data, __u16 fid,
  			__u32 pid_of_opener);

  extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,

  			bool delete_file, __u16 fid, __u32 pid_of_opener);

  #if 0

  extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,

  			char *fileName, __u16 dos_attributes,
  			const struct nls_table *nls_codepage);
  #endif /* possibly unneeded function */

  extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,

  			const char *fileName, __u64 size,

  			bool setAllocationSizeFlag,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,

  			 __u64 size, __u16 fileHandle, __u32 opener_pid,

  			bool AllocSizeFlag);

  
  struct cifs_unix_set_info_args {
  	__u64	ctime;
  	__u64	atime;
  	__u64	mtime;
  	__u64	mode;
  	__u64	uid;
  	__u64	gid;
  	dev_t	device;
  };

  extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,

  				  const struct cifs_unix_set_info_args *args,
  				  u16 fid, u32 pid_of_opener);

  extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,

  			char *fileName,
  			const struct cifs_unix_set_info_args *args,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,

  			const char *newName,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,

  			const char *name, const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,

  			const char *name, __u16 type,
  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,

  			const char *name,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBRename(const int xid, struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,

  			int netfid, const char *target_name,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSCreateHardLink(const int xid,

  			struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,

  			const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSUnixCreateHardLink(const int xid,

  			struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,

  			const struct nls_table *nls_codepage,

  			int remap_special_chars);

  extern int CIFSUnixCreateSymLink(const int xid,

  			struct cifs_tcon *tcon,

  			const char *fromName, const char *toName,
  			const struct nls_table *nls_codepage);
  extern int CIFSSMBUnixQuerySymLink(const int xid,

  			struct cifs_tcon *tcon,

  			const unsigned char *searchName, char **syminfo,

  			const struct nls_table *nls_codepage);

  #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL

  extern int CIFSSMBQueryReparseLinkInfo(const int xid,

  			struct cifs_tcon *tcon,

  			const unsigned char *searchName,
  			char *symlinkinfo, const int buflen, __u16 fid,
  			const struct nls_table *nls_codepage);

  #endif /* temporarily unused until cifs_symlink fixed */

  extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,

  			const char *fileName, const int disposition,
  			const int access_flags, const int omode,

  			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,

  			const struct nls_table *nls_codepage, int remap);

  extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,

  			const char *fileName, const int disposition,
  			const int access_flags, const int omode,

  			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,

  			u32 posix_flags, __u64 mode, __u16 *netfid,

  			FILE_UNIX_BASIC_INFO *pRetData,
  			__u32 *pOplock, const char *name,

  			const struct nls_table *nls_codepage, int remap);

  extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,

  			const int smb_file_id);

  extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,

  			const int smb_file_id);

  extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
  			unsigned int *nbytes, char **buf,

  			int *return_buf_type);

  extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
  			unsigned int *nbytes, const char *buf,
  			const char __user *ubuf, const int long_op);
  extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
  			unsigned int *nbytes, struct kvec *iov, const int nvec,

  			const int long_op);

  extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,

  			const unsigned char *searchName, __u64 *inode_number,

  			const struct nls_table *nls_codepage,

  			int remap_special_chars);

  extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
  		      const __u8 lock_type, const __u32 num_unlock,
  		      const __u32 num_lock, LOCKING_ANDX_RANGE *buf);

  extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,

  			const __u16 netfid, const __u32 netpid, const __u64 len,

  			const __u64 offset, const __u32 numUnlock,
  			const __u32 numLock, const __u8 lockType,

  			const bool waitFlag, const __u8 oplock_level);

  extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,

  			const __u16 smb_file_id, const __u32 netpid,
  			const int get_flag, const __u64 len, struct file_lock *,

  			const __u16 lock_type, const bool waitFlag);

  extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);

  extern int CIFSSMBEcho(struct TCP_Server_Info *server);

  extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);

  extern struct cifs_ses *sesInfoAlloc(void);
  extern void sesInfoFree(struct cifs_ses *);
  extern struct cifs_tcon *tconInfoAlloc(void);
  extern void tconInfoFree(struct cifs_tcon *);

  extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);

  extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
  			  __u32 *);

  extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,

  				 struct TCP_Server_Info *server,

  				__u32 expected_sequence_number);

  extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
  			const struct nls_table *);
  extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);

  extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);

  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 cifs_ses *);

  #ifdef CONFIG_CIFS_WEAK_PW_HASH

  extern int calc_lanman_hash(const char *password, const char *cryptkey,

  				bool encrypt, char *lnm_session_key);

  #endif /* CIFS_WEAK_PW_HASH */

  #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */

  extern int CIFSSMBNotify(const int xid, struct cifs_tcon *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 */

  extern int CIFSSMBCopy(int xid,

  			struct cifs_tcon *source_tcon,

  			const char *fromName,
  			const __u16 target_tid,
  			const char *toName, const int flags,

  			const struct nls_table *nls_codepage,

  			int remap_special_chars);

  extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,

  			const unsigned char *searchName,
  			const unsigned char *ea_name, char *EAData,

  			size_t bufsize, const struct nls_table *nls_codepage,
  			int remap_special_chars);

  extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,

  		const char *fileName, const char *ea_name,
  		const void *ea_value, const __u16 ea_value_len,

  		const struct nls_table *nls_codepage, int remap_special_chars);

  extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,

  			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);

  extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,

  			struct cifs_ntsd *, __u32, int);

  extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,

  		const unsigned char *searchName,

  		char *acl_inf, const int buflen, const int acl_type,

  		const struct nls_table *nls_codepage, int remap_special_chars);

  extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,

  		const unsigned char *fileName,
  		const char *local_acl, const int buflen, const int acl_type,

  		const struct nls_table *nls_codepage, int remap_special_chars);

  extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,

  			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);

  extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);

  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);

  extern int mdfour(unsigned char *, unsigned char *, int);

  extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
  			const struct nls_table *codepage);

  extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,

  			unsigned char *p24);

  /* asynchronous read support */
  struct cifs_readdata {
  	struct cifsFileInfo		*cfile;
  	struct address_space		*mapping;
  	__u64				offset;
  	unsigned int			bytes;
  	pid_t				pid;
  	int				result;
  	struct list_head		pages;
  	struct work_struct		work;
  	unsigned int			nr_iov;
  	struct kvec			iov[1];
  };
  
  struct cifs_readdata *cifs_readdata_alloc(unsigned int nr_pages);
  void cifs_readdata_free(struct cifs_readdata *rdata);
  int cifs_async_readv(struct cifs_readdata *rdata);

  /* asynchronous write support */
  struct cifs_writedata {
  	struct kref			refcount;
  	enum writeback_sync_modes	sync_mode;
  	struct work_struct		work;
  	struct cifsFileInfo		*cfile;
  	__u64				offset;
  	unsigned int			bytes;
  	int				result;
  	unsigned int			nr_pages;
  	struct page			*pages[1];
  };
  
  int cifs_async_writev(struct cifs_writedata *wdata);
  struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages);
  void cifs_writedata_release(struct kref *refcount);

  #endif			/* _CIFSPROTO_H */