1 /* SPDX-License-Identifier: LGPL-2.1 */ 2 /* 3 * 4 * Copyright (c) International Business Machines Corp., 2002,2008 5 * Author(s): Steve French (sfrench@us.ibm.com) 6 * 7 */ 8 #ifndef _CIFSPROTO_H 9 #define _CIFSPROTO_H 10 #include <linux/nls.h> 11 #include <linux/ctype.h> 12 #include "trace.h" 13 #ifdef CONFIG_CIFS_DFS_UPCALL 14 #include "dfs_cache.h" 15 #endif 16 17 struct statfs; 18 struct smb_rqst; 19 struct smb3_fs_context; 20 21 /* 22 ***************************************************************** 23 * All Prototypes 24 ***************************************************************** 25 */ 26 27 extern struct smb_hdr *cifs_buf_get(void); 28 extern void cifs_buf_release(void *); 29 extern struct smb_hdr *cifs_small_buf_get(void); 30 extern void cifs_small_buf_release(void *); 31 extern void free_rsp_buf(int, void *); 32 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *, 33 unsigned int /* length */); 34 extern unsigned int _get_xid(void); 35 extern void _free_xid(unsigned int); 36 #define get_xid() \ 37 ({ \ 38 unsigned int __xid = _get_xid(); \ 39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \ 40 __func__, __xid, \ 41 from_kuid(&init_user_ns, current_fsuid())); \ 42 trace_smb3_enter(__xid, __func__); \ 43 __xid; \ 44 }) 45 46 #define free_xid(curr_xid) \ 47 do { \ 48 _free_xid(curr_xid); \ 49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \ 50 __func__, curr_xid, (int)rc); \ 51 if (rc) \ 52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \ 53 else \ 54 trace_smb3_exit_done(curr_xid, __func__); \ 55 } while (0) 56 extern int init_cifs_idmap(void); 57 extern void exit_cifs_idmap(void); 58 extern int init_cifs_spnego(void); 59 extern void exit_cifs_spnego(void); 60 extern const char *build_path_from_dentry(struct dentry *, void *); 61 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, 62 const char *tree, int tree_len, 63 bool prefix); 64 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry, 65 void *page, bool prefix); 66 static inline void *alloc_dentry_path(void) 67 { 68 return __getname(); 69 } 70 71 static inline void free_dentry_path(void *page) 72 { 73 if (page) 74 __putname(page); 75 } 76 77 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx, 78 struct cifs_sb_info *cifs_sb, 79 struct cifs_tcon *tcon, 80 int add_treename); 81 extern char *build_wildcard_path_from_dentry(struct dentry *direntry); 82 char *cifs_build_devname(char *nodename, const char *prepath); 83 extern void delete_mid(struct mid_q_entry *mid); 84 void __release_mid(struct kref *refcount); 85 extern void cifs_wake_up_task(struct mid_q_entry *mid); 86 extern int cifs_handle_standard(struct TCP_Server_Info *server, 87 struct mid_q_entry *mid); 88 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx, 89 char dirsep); 90 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx); 91 extern int smb3_parse_opt(const char *options, const char *key, char **val); 92 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs); 93 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs); 94 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); 95 extern int cifs_call_async(struct TCP_Server_Info *server, 96 struct smb_rqst *rqst, 97 mid_receive_t *receive, mid_callback_t *callback, 98 mid_handle_t *handle, void *cbdata, const int flags, 99 const struct cifs_credits *exist_credits); 100 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses); 101 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, 102 struct TCP_Server_Info *server, 103 struct smb_rqst *rqst, int *resp_buf_type, 104 const int flags, struct kvec *resp_iov); 105 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses, 106 struct TCP_Server_Info *server, 107 const int flags, const int num_rqst, 108 struct smb_rqst *rqst, int *resp_buf_type, 109 struct kvec *resp_iov); 110 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, 111 struct smb_hdr * /* input */ , 112 struct smb_hdr * /* out */ , 113 int * /* bytes returned */ , const int); 114 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, 115 char *in_buf, int flags); 116 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *, 117 struct TCP_Server_Info *, 118 struct smb_rqst *); 119 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *, 120 struct smb_rqst *); 121 extern int cifs_check_receive(struct mid_q_entry *mid, 122 struct TCP_Server_Info *server, bool log_error); 123 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, 124 unsigned int size, unsigned int *num, 125 struct cifs_credits *credits); 126 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, 127 struct kvec *, int /* nvec to send */, 128 int * /* type of buf returned */, const int flags, 129 struct kvec * /* resp vec */); 130 extern int SendReceiveBlockingLock(const unsigned int xid, 131 struct cifs_tcon *ptcon, 132 struct smb_hdr *in_buf, 133 struct smb_hdr *out_buf, 134 int *bytes_returned); 135 136 void 137 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, 138 bool all_channels); 139 void 140 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, 141 bool mark_smb_session); 142 extern int cifs_reconnect(struct TCP_Server_Info *server, 143 bool mark_smb_session); 144 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr); 145 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *); 146 extern bool backup_cred(struct cifs_sb_info *); 147 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof); 148 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 149 unsigned int bytes_written); 150 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 151 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 152 int flags, 153 struct cifsFileInfo **ret_file); 154 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 155 int flags, 156 struct cifsFileInfo **ret_file); 157 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 158 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 159 struct cifsFileInfo **ret_file); 160 extern unsigned int smbCalcSize(void *buf); 161 extern int decode_negTokenInit(unsigned char *security_blob, int length, 162 struct TCP_Server_Info *server); 163 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 164 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 165 extern int map_smb_to_linux_error(char *buf, bool logErr); 166 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 167 extern void header_assemble(struct smb_hdr *, char /* command */ , 168 const struct cifs_tcon *, int /* length of 169 fixed section (word count) in two byte units */); 170 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 171 struct cifs_ses *ses, 172 void **request_buf); 173 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 174 enum securityEnum requested); 175 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 176 struct TCP_Server_Info *server, 177 const struct nls_table *nls_cp); 178 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 179 extern u64 cifs_UnixTimeToNT(struct timespec64); 180 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 181 int offset); 182 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 183 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 184 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 185 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 186 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 187 struct file_lock *flock, const unsigned int xid); 188 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 189 190 extern void cifs_down_write(struct rw_semaphore *sem); 191 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 192 struct tcon_link *tlink, __u32 oplock, 193 const char *symlink_target); 194 extern int cifs_posix_open(const char *full_path, struct inode **inode, 195 struct super_block *sb, int mode, 196 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 197 unsigned int xid); 198 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 199 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 200 FILE_UNIX_BASIC_INFO *info, 201 struct cifs_sb_info *cifs_sb); 202 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 203 struct cifs_sb_info *); 204 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr); 205 extern struct inode *cifs_iget(struct super_block *sb, 206 struct cifs_fattr *fattr); 207 208 int cifs_get_inode_info(struct inode **inode, const char *full_path, 209 struct cifs_open_info_data *data, struct super_block *sb, int xid, 210 const struct cifs_fid *fid); 211 bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb, 212 struct cifs_fattr *fattr, 213 u32 tag); 214 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path, 215 struct super_block *sb, unsigned int xid); 216 extern int cifs_get_inode_info_unix(struct inode **pinode, 217 const unsigned char *search_path, 218 struct super_block *sb, unsigned int xid); 219 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 220 unsigned int xid, const char *full_path, __u32 dosattr); 221 extern int cifs_rename_pending_delete(const char *full_path, 222 struct dentry *dentry, 223 const unsigned int xid); 224 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid, 225 struct cifs_fattr *fattr, uint sidtype); 226 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 227 struct cifs_fattr *fattr, struct inode *inode, 228 bool get_mode_from_special_sid, 229 const char *path, const struct cifs_fid *pfid); 230 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 231 kuid_t uid, kgid_t gid); 232 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, 233 const char *, u32 *, u32); 234 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *, 235 const struct cifs_fid *, u32 *, u32); 236 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 237 struct dentry *dentry, int type); 238 extern int cifs_set_acl(struct mnt_idmap *idmap, 239 struct dentry *dentry, struct posix_acl *acl, int type); 240 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, 241 const char *, int); 242 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace); 243 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode); 244 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace); 245 246 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 247 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 248 unsigned int to_read); 249 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 250 size_t to_read); 251 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server, 252 struct page *page, 253 unsigned int page_offset, 254 unsigned int to_read); 255 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 256 struct iov_iter *iter, 257 unsigned int to_read); 258 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 259 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 260 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 261 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 262 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 263 extern int cifs_match_super(struct super_block *, void *); 264 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 265 extern void cifs_umount(struct cifs_sb_info *); 266 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 267 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 268 269 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 270 __u64 length, __u8 type, __u16 flags, 271 struct cifsLockInfo **conf_lock, 272 int rw_check); 273 extern void cifs_add_pending_open(struct cifs_fid *fid, 274 struct tcon_link *tlink, 275 struct cifs_pending_open *open); 276 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 277 struct tcon_link *tlink, 278 struct cifs_pending_open *open); 279 extern void cifs_del_pending_open(struct cifs_pending_open *open); 280 281 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 282 struct cifs_deferred_close **dclose); 283 284 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 285 struct cifs_deferred_close *dclose); 286 287 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 288 289 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 290 291 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 292 293 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 294 const char *path); 295 extern struct TCP_Server_Info * 296 cifs_get_tcp_session(struct smb3_fs_context *ctx, 297 struct TCP_Server_Info *primary_server); 298 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 299 int from_reconnect); 300 extern void cifs_put_tcon(struct cifs_tcon *tcon); 301 302 extern void cifs_release_automount_timer(void); 303 304 void cifs_proc_init(void); 305 void cifs_proc_clean(void); 306 307 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 308 extern void cifs_free_llist(struct list_head *llist); 309 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 310 311 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, 312 const struct nls_table *nlsc); 313 314 extern int cifs_negotiate_protocol(const unsigned int xid, 315 struct cifs_ses *ses, 316 struct TCP_Server_Info *server); 317 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 318 struct TCP_Server_Info *server, 319 struct nls_table *nls_info); 320 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 321 extern int CIFSSMBNegotiate(const unsigned int xid, 322 struct cifs_ses *ses, 323 struct TCP_Server_Info *server); 324 325 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 326 const char *tree, struct cifs_tcon *tcon, 327 const struct nls_table *); 328 329 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 330 const char *searchName, struct cifs_sb_info *cifs_sb, 331 __u16 *searchHandle, __u16 search_flags, 332 struct cifs_search_info *psrch_inf, 333 bool msearch); 334 335 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 336 __u16 searchHandle, __u16 search_flags, 337 struct cifs_search_info *psrch_inf); 338 339 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 340 const __u16 search_handle); 341 342 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 343 u16 netfid, FILE_ALL_INFO *pFindData); 344 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 345 const char *search_Name, FILE_ALL_INFO *data, 346 int legacy /* whether to use old info level */, 347 const struct nls_table *nls_codepage, int remap); 348 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 349 const char *search_name, FILE_ALL_INFO *data, 350 const struct nls_table *nls_codepage, int remap); 351 352 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 353 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 354 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 355 struct cifs_tcon *tcon, 356 const unsigned char *searchName, 357 FILE_UNIX_BASIC_INFO *pFindData, 358 const struct nls_table *nls_codepage, int remap); 359 360 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 361 const char *search_name, 362 struct dfs_info3_param **target_nodes, 363 unsigned int *num_of_nodes, 364 const struct nls_table *nls_codepage, int remap); 365 366 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 367 unsigned int *num_of_nodes, 368 struct dfs_info3_param **target_nodes, 369 const struct nls_table *nls_codepage, int remap, 370 const char *searchName, bool is_unicode); 371 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 372 struct cifs_sb_info *cifs_sb, 373 struct smb3_fs_context *ctx); 374 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 375 struct kstatfs *FSData); 376 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 377 struct kstatfs *FSData); 378 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 379 __u64 cap); 380 381 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 382 struct cifs_tcon *tcon); 383 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 384 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 385 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 386 struct kstatfs *FSData); 387 388 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 389 const char *fileName, const FILE_BASIC_INFO *data, 390 const struct nls_table *nls_codepage, 391 struct cifs_sb_info *cifs_sb); 392 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 393 const FILE_BASIC_INFO *data, __u16 fid, 394 __u32 pid_of_opener); 395 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 396 struct cifs_tcon *tcon, 397 bool delete_file, __u16 fid, 398 __u32 pid_of_opener); 399 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 400 const char *file_name, __u64 size, 401 struct cifs_sb_info *cifs_sb, bool set_allocation); 402 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 403 struct cifsFileInfo *cfile, __u64 size, 404 bool set_allocation); 405 406 struct cifs_unix_set_info_args { 407 __u64 ctime; 408 __u64 atime; 409 __u64 mtime; 410 __u64 mode; 411 kuid_t uid; 412 kgid_t gid; 413 dev_t device; 414 }; 415 416 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 417 struct cifs_tcon *tcon, 418 const struct cifs_unix_set_info_args *args, 419 u16 fid, u32 pid_of_opener); 420 421 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 422 struct cifs_tcon *tcon, const char *file_name, 423 const struct cifs_unix_set_info_args *args, 424 const struct nls_table *nls_codepage, 425 int remap); 426 427 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 428 umode_t mode, struct cifs_tcon *tcon, 429 const char *name, struct cifs_sb_info *cifs_sb); 430 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 431 const char *name, struct cifs_sb_info *cifs_sb); 432 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 433 const char *name, __u16 type, 434 const struct nls_table *nls_codepage, 435 int remap_special_chars); 436 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 437 const char *name, struct cifs_sb_info *cifs_sb); 438 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 439 const char *from_name, const char *to_name, 440 struct cifs_sb_info *cifs_sb); 441 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 442 int netfid, const char *target_name, 443 const struct nls_table *nls_codepage, 444 int remap_special_chars); 445 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, 446 const char *from_name, const char *to_name, 447 struct cifs_sb_info *cifs_sb); 448 extern int CIFSUnixCreateHardLink(const unsigned int xid, 449 struct cifs_tcon *tcon, 450 const char *fromName, const char *toName, 451 const struct nls_table *nls_codepage, 452 int remap_special_chars); 453 extern int CIFSUnixCreateSymLink(const unsigned int xid, 454 struct cifs_tcon *tcon, 455 const char *fromName, const char *toName, 456 const struct nls_table *nls_codepage, int remap); 457 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 458 struct cifs_tcon *tcon, 459 const unsigned char *searchName, char **syminfo, 460 const struct nls_table *nls_codepage, int remap); 461 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 462 __u16 fid, char **symlinkinfo, 463 const struct nls_table *nls_codepage); 464 extern int CIFSSMB_set_compression(const unsigned int xid, 465 struct cifs_tcon *tcon, __u16 fid); 466 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 467 int *oplock, FILE_ALL_INFO *buf); 468 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 469 const char *fileName, const int disposition, 470 const int access_flags, const int omode, 471 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 472 const struct nls_table *nls_codepage, int remap); 473 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 474 u32 posix_flags, __u64 mode, __u16 *netfid, 475 FILE_UNIX_BASIC_INFO *pRetData, 476 __u32 *pOplock, const char *name, 477 const struct nls_table *nls_codepage, int remap); 478 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 479 const int smb_file_id); 480 481 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 482 const int smb_file_id); 483 484 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 485 unsigned int *nbytes, char **buf, 486 int *return_buf_type); 487 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 488 unsigned int *nbytes, const char *buf); 489 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 490 unsigned int *nbytes, struct kvec *iov, const int nvec); 491 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 492 const char *search_name, __u64 *inode_number, 493 const struct nls_table *nls_codepage, 494 int remap); 495 496 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 497 const __u16 netfid, const __u8 lock_type, 498 const __u32 num_unlock, const __u32 num_lock, 499 LOCKING_ANDX_RANGE *buf); 500 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 501 const __u16 netfid, const __u32 netpid, const __u64 len, 502 const __u64 offset, const __u32 numUnlock, 503 const __u32 numLock, const __u8 lockType, 504 const bool waitFlag, const __u8 oplock_level); 505 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 506 const __u16 smb_file_id, const __u32 netpid, 507 const loff_t start_offset, const __u64 len, 508 struct file_lock *, const __u16 lock_type, 509 const bool waitFlag); 510 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 511 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 512 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 513 514 extern struct cifs_ses *sesInfoAlloc(void); 515 extern void sesInfoFree(struct cifs_ses *); 516 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled); 517 extern void tconInfoFree(struct cifs_tcon *); 518 519 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 520 __u32 *pexpected_response_sequence_number); 521 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 522 __u32 *); 523 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 524 extern int cifs_verify_signature(struct smb_rqst *rqst, 525 struct TCP_Server_Info *server, 526 __u32 expected_sequence_number); 527 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 528 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 529 extern int calc_seckey(struct cifs_ses *); 530 extern int generate_smb30signingkey(struct cifs_ses *ses, 531 struct TCP_Server_Info *server); 532 extern int generate_smb311signingkey(struct cifs_ses *ses, 533 struct TCP_Server_Info *server); 534 535 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 536 extern int CIFSSMBCopy(unsigned int xid, 537 struct cifs_tcon *source_tcon, 538 const char *fromName, 539 const __u16 target_tid, 540 const char *toName, const int flags, 541 const struct nls_table *nls_codepage, 542 int remap_special_chars); 543 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 544 const unsigned char *searchName, 545 const unsigned char *ea_name, char *EAData, 546 size_t bufsize, struct cifs_sb_info *cifs_sb); 547 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 548 const char *fileName, const char *ea_name, 549 const void *ea_value, const __u16 ea_value_len, 550 const struct nls_table *nls_codepage, 551 struct cifs_sb_info *cifs_sb); 552 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 553 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); 554 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 555 struct cifs_ntsd *, __u32, int); 556 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 557 const unsigned char *searchName, 558 struct posix_acl **acl, const int acl_type, 559 const struct nls_table *nls_codepage, int remap); 560 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 561 const unsigned char *fileName, 562 const struct posix_acl *acl, const int acl_type, 563 const struct nls_table *nls_codepage, int remap); 564 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 565 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 566 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 567 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 568 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 569 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 570 struct cifs_sb_info *cifs_sb, 571 struct cifs_fattr *fattr, 572 const unsigned char *path); 573 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 574 const struct nls_table *codepage); 575 576 extern struct TCP_Server_Info * 577 cifs_find_tcp_session(struct smb3_fs_context *ctx); 578 579 void __cifs_put_smb_ses(struct cifs_ses *ses); 580 581 extern struct cifs_ses * 582 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 583 584 void cifs_readdata_release(struct kref *refcount); 585 int cifs_async_readv(struct cifs_readdata *rdata); 586 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 587 588 int cifs_async_writev(struct cifs_writedata *wdata, 589 void (*release)(struct kref *kref)); 590 void cifs_writev_complete(struct work_struct *work); 591 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete); 592 void cifs_writedata_release(struct kref *refcount); 593 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 594 struct cifs_sb_info *cifs_sb, 595 const unsigned char *path, char *pbuf, 596 unsigned int *pbytes_read); 597 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 598 struct cifs_sb_info *cifs_sb, 599 const unsigned char *path, char *pbuf, 600 unsigned int *pbytes_written); 601 int __cifs_calc_signature(struct smb_rqst *rqst, 602 struct TCP_Server_Info *server, char *signature, 603 struct shash_desc *shash); 604 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 605 enum securityEnum); 606 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); 607 void cifs_aio_ctx_release(struct kref *refcount); 608 609 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 610 void cifs_free_hash(struct shash_desc **sdesc); 611 612 struct cifs_chan * 613 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server); 614 int cifs_try_adding_channels(struct cifs_ses *ses); 615 bool is_server_using_iface(struct TCP_Server_Info *server, 616 struct cifs_server_iface *iface); 617 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 618 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 619 620 int 621 cifs_ses_get_chan_index(struct cifs_ses *ses, 622 struct TCP_Server_Info *server); 623 void 624 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 625 struct TCP_Server_Info *server); 626 void 627 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 628 struct TCP_Server_Info *server); 629 bool 630 cifs_chan_in_reconnect(struct cifs_ses *ses, 631 struct TCP_Server_Info *server); 632 void 633 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 634 struct TCP_Server_Info *server); 635 void 636 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 637 struct TCP_Server_Info *server); 638 bool 639 cifs_chan_needs_reconnect(struct cifs_ses *ses, 640 struct TCP_Server_Info *server); 641 bool 642 cifs_chan_is_iface_active(struct cifs_ses *ses, 643 struct TCP_Server_Info *server); 644 void 645 cifs_disable_secondary_channels(struct cifs_ses *ses); 646 int 647 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 648 int 649 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 650 651 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 652 int copy_path_name(char *dst, const char *src); 653 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 654 int resp_buftype, 655 struct cifs_search_info *srch_inf); 656 657 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 658 void cifs_put_tcp_super(struct super_block *sb); 659 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 660 char *extract_hostname(const char *unc); 661 char *extract_sharename(const char *unc); 662 663 #ifdef CONFIG_CIFS_DFS_UPCALL 664 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 665 const char *old_path, 666 const struct nls_table *nls_codepage, 667 struct dfs_info3_param *referral, int remap) 668 { 669 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 670 referral, NULL); 671 } 672 673 int match_target_ip(struct TCP_Server_Info *server, 674 const char *share, size_t share_len, 675 bool *result); 676 int cifs_inval_name_dfs_link_error(const unsigned int xid, 677 struct cifs_tcon *tcon, 678 struct cifs_sb_info *cifs_sb, 679 const char *full_path, 680 bool *islink); 681 #else 682 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 683 struct cifs_tcon *tcon, 684 struct cifs_sb_info *cifs_sb, 685 const char *full_path, 686 bool *islink) 687 { 688 *islink = false; 689 return 0; 690 } 691 #endif 692 693 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 694 { 695 if (cifs_sb && (backup_cred(cifs_sb))) 696 return options | CREATE_OPEN_BACKUP_INTENT; 697 else 698 return options; 699 } 700 701 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon); 702 void cifs_put_tcon_super(struct super_block *sb); 703 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 704 705 /* Put references of @ses and @ses->dfs_root_ses */ 706 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 707 { 708 struct cifs_ses *rses = ses->dfs_root_ses; 709 710 __cifs_put_smb_ses(ses); 711 if (rses) 712 __cifs_put_smb_ses(rses); 713 } 714 715 /* Get an active reference of @ses and @ses->dfs_root_ses. 716 * 717 * NOTE: make sure to call this function when incrementing reference count of 718 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 719 * will also get its reference count incremented. 720 * 721 * cifs_put_smb_ses() will put both references, so call it when you're done. 722 */ 723 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 724 { 725 lockdep_assert_held(&cifs_tcp_ses_lock); 726 727 ses->ses_count++; 728 if (ses->dfs_root_ses) 729 ses->dfs_root_ses->ses_count++; 730 } 731 732 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 733 { 734 if (strlen(s1) != strlen(s2)) 735 return false; 736 for (; *s1; s1++, s2++) { 737 if (*s1 == '/' || *s1 == '\\') { 738 if (*s2 != '/' && *s2 != '\\') 739 return false; 740 } else if (tolower(*s1) != tolower(*s2)) 741 return false; 742 } 743 return true; 744 } 745 746 static inline void release_mid(struct mid_q_entry *mid) 747 { 748 kref_put(&mid->refcount, __release_mid); 749 } 750 751 #endif /* _CIFSPROTO_H */ 752