1 /* 2 * fs/cifs/cifsproto.h 3 * 4 * Copyright (c) International Business Machines Corp., 2002,2008 5 * Author(s): Steve French (sfrench@us.ibm.com) 6 * 7 * This library is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU Lesser General Public License as published 9 * by the Free Software Foundation; either version 2.1 of the License, or 10 * (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 15 * the GNU Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public License 18 * along with this library; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 #ifndef _CIFSPROTO_H 22 #define _CIFSPROTO_H 23 #include <linux/nls.h> 24 25 struct statfs; 26 struct smb_vol; 27 28 /* 29 ***************************************************************** 30 * All Prototypes 31 ***************************************************************** 32 */ 33 34 extern struct smb_hdr *cifs_buf_get(void); 35 extern void cifs_buf_release(void *); 36 extern struct smb_hdr *cifs_small_buf_get(void); 37 extern void cifs_small_buf_release(void *); 38 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *, 39 unsigned int /* length */); 40 extern unsigned int _GetXid(void); 41 extern void _FreeXid(unsigned int); 42 #define GetXid() \ 43 ({ \ 44 int __xid = (int)_GetXid(); \ 45 cFYI(1, "CIFS VFS: in %s as Xid: %d with uid: %d", \ 46 __func__, __xid, current_fsuid()); \ 47 __xid; \ 48 }) 49 50 #define FreeXid(curr_xid) \ 51 do { \ 52 _FreeXid(curr_xid); \ 53 cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d", \ 54 __func__, curr_xid, (int)rc); \ 55 } while (0) 56 extern int init_cifs_idmap(void); 57 extern void exit_cifs_idmap(void); 58 extern void cifs_destroy_idmaptrees(void); 59 extern char *build_path_from_dentry(struct dentry *); 60 extern char *cifs_build_path_to_root(struct smb_vol *vol, 61 struct cifs_sb_info *cifs_sb, 62 struct cifs_tcon *tcon); 63 extern char *build_wildcard_path_from_dentry(struct dentry *direntry); 64 extern char *cifs_compose_mount_options(const char *sb_mountdata, 65 const char *fullpath, const struct dfs_info3_param *ref, 66 char **devname); 67 /* extern void renew_parental_timestamps(struct dentry *direntry);*/ 68 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer, 69 struct TCP_Server_Info *server); 70 extern void DeleteMidQEntry(struct mid_q_entry *midEntry); 71 extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov, 72 unsigned int nvec, mid_receive_t *receive, 73 mid_callback_t *callback, void *cbdata, 74 bool ignore_pend); 75 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, 76 struct smb_hdr * /* input */ , 77 struct smb_hdr * /* out */ , 78 int * /* bytes returned */ , const int long_op); 79 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, 80 struct smb_hdr *in_buf, int flags); 81 extern int cifs_check_receive(struct mid_q_entry *mid, 82 struct TCP_Server_Info *server, bool log_error); 83 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, 84 struct kvec *, int /* nvec to send */, 85 int * /* type of buf returned */ , const int flags); 86 extern int SendReceiveBlockingLock(const unsigned int xid, 87 struct cifs_tcon *ptcon, 88 struct smb_hdr *in_buf , 89 struct smb_hdr *out_buf, 90 int *bytes_returned); 91 extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length); 92 extern bool is_valid_oplock_break(struct smb_hdr *smb, 93 struct TCP_Server_Info *); 94 extern bool backup_cred(struct cifs_sb_info *); 95 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof); 96 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 97 unsigned int bytes_written); 98 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool); 99 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 100 extern unsigned int smbCalcSize(struct smb_hdr *ptr); 101 extern int decode_negTokenInit(unsigned char *security_blob, int length, 102 struct TCP_Server_Info *server); 103 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 104 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port); 105 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len, 106 const unsigned short int port); 107 extern int map_smb_to_linux_error(struct smb_hdr *smb, bool logErr); 108 extern void header_assemble(struct smb_hdr *, char /* command */ , 109 const struct cifs_tcon *, int /* length of 110 fixed section (word count) in two byte units */); 111 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 112 struct cifs_ses *ses, 113 void **request_buf); 114 extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses, 115 const struct nls_table *nls_cp); 116 extern __u16 GetNextMid(struct TCP_Server_Info *server); 117 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 118 extern u64 cifs_UnixTimeToNT(struct timespec); 119 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 120 int offset); 121 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 122 123 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle, 124 struct file *file, struct tcon_link *tlink, 125 __u32 oplock); 126 extern int cifs_posix_open(char *full_path, struct inode **pinode, 127 struct super_block *sb, 128 int mode, unsigned int f_flags, 129 __u32 *poplock, __u16 *pnetfid, int xid); 130 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 131 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 132 FILE_UNIX_BASIC_INFO *info, 133 struct cifs_sb_info *cifs_sb); 134 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr); 135 extern struct inode *cifs_iget(struct super_block *sb, 136 struct cifs_fattr *fattr); 137 138 extern int cifs_get_file_info(struct file *filp); 139 extern int cifs_get_inode_info(struct inode **pinode, 140 const unsigned char *search_path, 141 FILE_ALL_INFO *pfile_info, 142 struct super_block *sb, int xid, const __u16 *pfid); 143 extern int cifs_get_file_info_unix(struct file *filp); 144 extern int cifs_get_inode_info_unix(struct inode **pinode, 145 const unsigned char *search_path, 146 struct super_block *sb, int xid); 147 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 148 struct cifs_fattr *fattr, struct inode *inode, 149 const char *path, const __u16 *pfid); 150 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64, 151 uid_t, gid_t); 152 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, 153 const char *, u32 *); 154 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, 155 const char *, int); 156 157 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 158 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 159 unsigned int to_read); 160 extern int cifs_readv_from_socket(struct TCP_Server_Info *server, 161 struct kvec *iov_orig, unsigned int nr_segs, 162 unsigned int to_read); 163 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, 164 struct cifs_sb_info *cifs_sb); 165 extern int cifs_match_super(struct super_block *, void *); 166 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info); 167 extern struct smb_vol *cifs_get_volume_info(char *mount_data, 168 const char *devname); 169 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *); 170 extern void cifs_umount(struct cifs_sb_info *); 171 extern void cifs_dfs_release_automount_timer(void); 172 void cifs_proc_init(void); 173 void cifs_proc_clean(void); 174 175 extern int cifs_negotiate_protocol(unsigned int xid, 176 struct cifs_ses *ses); 177 extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses, 178 struct nls_table *nls_info); 179 extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses); 180 181 extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses, 182 const char *tree, struct cifs_tcon *tcon, 183 const struct nls_table *); 184 185 extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon, 186 const char *searchName, const struct nls_table *nls_codepage, 187 __u16 *searchHandle, struct cifs_search_info *psrch_inf, 188 int map, const char dirsep); 189 190 extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon, 191 __u16 searchHandle, struct cifs_search_info *psrch_inf); 192 193 extern int CIFSFindClose(const int, struct cifs_tcon *tcon, 194 const __u16 search_handle); 195 196 extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, 197 u16 netfid, FILE_ALL_INFO *pFindData); 198 extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, 199 const unsigned char *searchName, 200 FILE_ALL_INFO *findData, 201 int legacy /* whether to use old info level */, 202 const struct nls_table *nls_codepage, int remap); 203 extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, 204 const unsigned char *searchName, 205 FILE_ALL_INFO *findData, 206 const struct nls_table *nls_codepage, int remap); 207 208 extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, 209 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 210 extern int CIFSSMBUnixQPathInfo(const int xid, 211 struct cifs_tcon *tcon, 212 const unsigned char *searchName, 213 FILE_UNIX_BASIC_INFO *pFindData, 214 const struct nls_table *nls_codepage, int remap); 215 216 extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, 217 const unsigned char *searchName, 218 struct dfs_info3_param **target_nodes, 219 unsigned int *number_of_nodes_in_array, 220 const struct nls_table *nls_codepage, int remap); 221 222 extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo, 223 const char *old_path, 224 const struct nls_table *nls_codepage, 225 unsigned int *pnum_referrals, 226 struct dfs_info3_param **preferrals, 227 int remap); 228 extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, 229 struct cifs_sb_info *cifs_sb, 230 struct smb_vol *vol); 231 extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, 232 struct kstatfs *FSData); 233 extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, 234 struct kstatfs *FSData); 235 extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, 236 __u64 cap); 237 238 extern int CIFSSMBQFSAttributeInfo(const int xid, 239 struct cifs_tcon *tcon); 240 extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon); 241 extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon); 242 extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, 243 struct kstatfs *FSData); 244 245 extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, 246 const char *fileName, const FILE_BASIC_INFO *data, 247 const struct nls_table *nls_codepage, 248 int remap_special_chars); 249 extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, 250 const FILE_BASIC_INFO *data, __u16 fid, 251 __u32 pid_of_opener); 252 extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, 253 bool delete_file, __u16 fid, __u32 pid_of_opener); 254 #if 0 255 extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, 256 char *fileName, __u16 dos_attributes, 257 const struct nls_table *nls_codepage); 258 #endif /* possibly unneeded function */ 259 extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, 260 const char *fileName, __u64 size, 261 bool setAllocationSizeFlag, 262 const struct nls_table *nls_codepage, 263 int remap_special_chars); 264 extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, 265 __u64 size, __u16 fileHandle, __u32 opener_pid, 266 bool AllocSizeFlag); 267 268 struct cifs_unix_set_info_args { 269 __u64 ctime; 270 __u64 atime; 271 __u64 mtime; 272 __u64 mode; 273 __u64 uid; 274 __u64 gid; 275 dev_t device; 276 }; 277 278 extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, 279 const struct cifs_unix_set_info_args *args, 280 u16 fid, u32 pid_of_opener); 281 282 extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon, 283 char *fileName, 284 const struct cifs_unix_set_info_args *args, 285 const struct nls_table *nls_codepage, 286 int remap_special_chars); 287 288 extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, 289 const char *newName, 290 const struct nls_table *nls_codepage, 291 int remap_special_chars); 292 extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, 293 const char *name, const struct nls_table *nls_codepage, 294 int remap_special_chars); 295 extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, 296 const char *name, __u16 type, 297 const struct nls_table *nls_codepage, 298 int remap_special_chars); 299 extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, 300 const char *name, 301 const struct nls_table *nls_codepage, 302 int remap_special_chars); 303 extern int CIFSSMBRename(const int xid, struct cifs_tcon *tcon, 304 const char *fromName, const char *toName, 305 const struct nls_table *nls_codepage, 306 int remap_special_chars); 307 extern int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, 308 int netfid, const char *target_name, 309 const struct nls_table *nls_codepage, 310 int remap_special_chars); 311 extern int CIFSCreateHardLink(const int xid, 312 struct cifs_tcon *tcon, 313 const char *fromName, const char *toName, 314 const struct nls_table *nls_codepage, 315 int remap_special_chars); 316 extern int CIFSUnixCreateHardLink(const int xid, 317 struct cifs_tcon *tcon, 318 const char *fromName, const char *toName, 319 const struct nls_table *nls_codepage, 320 int remap_special_chars); 321 extern int CIFSUnixCreateSymLink(const int xid, 322 struct cifs_tcon *tcon, 323 const char *fromName, const char *toName, 324 const struct nls_table *nls_codepage); 325 extern int CIFSSMBUnixQuerySymLink(const int xid, 326 struct cifs_tcon *tcon, 327 const unsigned char *searchName, char **syminfo, 328 const struct nls_table *nls_codepage); 329 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL 330 extern int CIFSSMBQueryReparseLinkInfo(const int xid, 331 struct cifs_tcon *tcon, 332 const unsigned char *searchName, 333 char *symlinkinfo, const int buflen, __u16 fid, 334 const struct nls_table *nls_codepage); 335 #endif /* temporarily unused until cifs_symlink fixed */ 336 extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, 337 const char *fileName, const int disposition, 338 const int access_flags, const int omode, 339 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 340 const struct nls_table *nls_codepage, int remap); 341 extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, 342 const char *fileName, const int disposition, 343 const int access_flags, const int omode, 344 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 345 const struct nls_table *nls_codepage, int remap); 346 extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, 347 u32 posix_flags, __u64 mode, __u16 *netfid, 348 FILE_UNIX_BASIC_INFO *pRetData, 349 __u32 *pOplock, const char *name, 350 const struct nls_table *nls_codepage, int remap); 351 extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon, 352 const int smb_file_id); 353 354 extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, 355 const int smb_file_id); 356 357 extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, 358 unsigned int *nbytes, char **buf, 359 int *return_buf_type); 360 extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, 361 unsigned int *nbytes, const char *buf, 362 const char __user *ubuf, const int long_op); 363 extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, 364 unsigned int *nbytes, struct kvec *iov, const int nvec, 365 const int long_op); 366 extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, 367 const unsigned char *searchName, __u64 *inode_number, 368 const struct nls_table *nls_codepage, 369 int remap_special_chars); 370 371 extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid, 372 const __u8 lock_type, const __u32 num_unlock, 373 const __u32 num_lock, LOCKING_ANDX_RANGE *buf); 374 extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon, 375 const __u16 netfid, const __u32 netpid, const __u64 len, 376 const __u64 offset, const __u32 numUnlock, 377 const __u32 numLock, const __u8 lockType, 378 const bool waitFlag, const __u8 oplock_level); 379 extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, 380 const __u16 smb_file_id, const __u32 netpid, 381 const int get_flag, const __u64 len, struct file_lock *, 382 const __u16 lock_type, const bool waitFlag); 383 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon); 384 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 385 extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses); 386 387 extern struct cifs_ses *sesInfoAlloc(void); 388 extern void sesInfoFree(struct cifs_ses *); 389 extern struct cifs_tcon *tconInfoAlloc(void); 390 extern void tconInfoFree(struct cifs_tcon *); 391 392 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 393 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 394 __u32 *); 395 extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov, 396 struct TCP_Server_Info *server, 397 __u32 expected_sequence_number); 398 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *, 399 const struct nls_table *); 400 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *); 401 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 402 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *); 403 extern void cifs_crypto_shash_release(struct TCP_Server_Info *); 404 extern int calc_seckey(struct cifs_ses *); 405 406 #ifdef CONFIG_CIFS_WEAK_PW_HASH 407 extern int calc_lanman_hash(const char *password, const char *cryptkey, 408 bool encrypt, char *lnm_session_key); 409 #endif /* CIFS_WEAK_PW_HASH */ 410 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ 411 extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, 412 const int notify_subdirs, const __u16 netfid, 413 __u32 filter, struct file *file, int multishot, 414 const struct nls_table *nls_codepage); 415 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ 416 extern int CIFSSMBCopy(int xid, 417 struct cifs_tcon *source_tcon, 418 const char *fromName, 419 const __u16 target_tid, 420 const char *toName, const int flags, 421 const struct nls_table *nls_codepage, 422 int remap_special_chars); 423 extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, 424 const unsigned char *searchName, 425 const unsigned char *ea_name, char *EAData, 426 size_t bufsize, const struct nls_table *nls_codepage, 427 int remap_special_chars); 428 extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, 429 const char *fileName, const char *ea_name, 430 const void *ea_value, const __u16 ea_value_len, 431 const struct nls_table *nls_codepage, int remap_special_chars); 432 extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, 433 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); 434 extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16, 435 struct cifs_ntsd *, __u32, int); 436 extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, 437 const unsigned char *searchName, 438 char *acl_inf, const int buflen, const int acl_type, 439 const struct nls_table *nls_codepage, int remap_special_chars); 440 extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, 441 const unsigned char *fileName, 442 const char *local_acl, const int buflen, const int acl_type, 443 const struct nls_table *nls_codepage, int remap_special_chars); 444 extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, 445 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 446 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 447 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr); 448 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr, 449 const unsigned char *path, 450 struct cifs_sb_info *cifs_sb, int xid); 451 extern int mdfour(unsigned char *, unsigned char *, int); 452 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 453 const struct nls_table *codepage); 454 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8, 455 unsigned char *p24); 456 457 /* asynchronous read support */ 458 struct cifs_readdata { 459 struct cifsFileInfo *cfile; 460 struct address_space *mapping; 461 __u64 offset; 462 unsigned int bytes; 463 pid_t pid; 464 int result; 465 struct list_head pages; 466 struct work_struct work; 467 unsigned int nr_iov; 468 struct kvec iov[1]; 469 }; 470 471 struct cifs_readdata *cifs_readdata_alloc(unsigned int nr_pages); 472 void cifs_readdata_free(struct cifs_readdata *rdata); 473 int cifs_async_readv(struct cifs_readdata *rdata); 474 475 /* asynchronous write support */ 476 struct cifs_writedata { 477 struct kref refcount; 478 enum writeback_sync_modes sync_mode; 479 struct work_struct work; 480 struct cifsFileInfo *cfile; 481 __u64 offset; 482 unsigned int bytes; 483 int result; 484 unsigned int nr_pages; 485 struct page *pages[1]; 486 }; 487 488 int cifs_async_writev(struct cifs_writedata *wdata); 489 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages); 490 void cifs_writedata_release(struct kref *refcount); 491 492 #endif /* _CIFSPROTO_H */ 493