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 struct cifs_open_info_data *data); 214 215 extern int smb311_posix_get_inode_info(struct inode **inode, 216 const char *full_path, 217 struct cifs_open_info_data *data, 218 struct super_block *sb, 219 const unsigned int xid); 220 extern int cifs_get_inode_info_unix(struct inode **pinode, 221 const unsigned char *search_path, 222 struct super_block *sb, unsigned int xid); 223 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 224 unsigned int xid, const char *full_path, __u32 dosattr); 225 extern int cifs_rename_pending_delete(const char *full_path, 226 struct dentry *dentry, 227 const unsigned int xid); 228 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid, 229 struct cifs_fattr *fattr, uint sidtype); 230 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 231 struct cifs_fattr *fattr, struct inode *inode, 232 bool get_mode_from_special_sid, 233 const char *path, const struct cifs_fid *pfid); 234 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 235 kuid_t uid, kgid_t gid); 236 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, 237 const char *, u32 *, u32); 238 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *, 239 const struct cifs_fid *, u32 *, u32); 240 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 241 struct dentry *dentry, int type); 242 extern int cifs_set_acl(struct mnt_idmap *idmap, 243 struct dentry *dentry, struct posix_acl *acl, int type); 244 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, 245 const char *, int); 246 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace); 247 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode); 248 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace); 249 250 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 251 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 252 unsigned int to_read); 253 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 254 size_t to_read); 255 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server, 256 struct page *page, 257 unsigned int page_offset, 258 unsigned int to_read); 259 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 260 struct iov_iter *iter, 261 unsigned int to_read); 262 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 263 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 264 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 265 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 266 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 267 extern int cifs_match_super(struct super_block *, void *); 268 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 269 extern void cifs_umount(struct cifs_sb_info *); 270 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 271 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 272 273 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 274 __u64 length, __u8 type, __u16 flags, 275 struct cifsLockInfo **conf_lock, 276 int rw_check); 277 extern void cifs_add_pending_open(struct cifs_fid *fid, 278 struct tcon_link *tlink, 279 struct cifs_pending_open *open); 280 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 281 struct tcon_link *tlink, 282 struct cifs_pending_open *open); 283 extern void cifs_del_pending_open(struct cifs_pending_open *open); 284 285 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 286 struct cifs_deferred_close **dclose); 287 288 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 289 struct cifs_deferred_close *dclose); 290 291 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 292 293 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 294 295 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 296 297 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 298 const char *path); 299 extern struct TCP_Server_Info * 300 cifs_get_tcp_session(struct smb3_fs_context *ctx, 301 struct TCP_Server_Info *primary_server); 302 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 303 int from_reconnect); 304 extern void cifs_put_tcon(struct cifs_tcon *tcon); 305 306 extern void cifs_release_automount_timer(void); 307 308 void cifs_proc_init(void); 309 void cifs_proc_clean(void); 310 311 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 312 extern void cifs_free_llist(struct list_head *llist); 313 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 314 315 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, 316 const struct nls_table *nlsc); 317 318 extern int cifs_negotiate_protocol(const unsigned int xid, 319 struct cifs_ses *ses, 320 struct TCP_Server_Info *server); 321 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 322 struct TCP_Server_Info *server, 323 struct nls_table *nls_info); 324 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 325 extern int CIFSSMBNegotiate(const unsigned int xid, 326 struct cifs_ses *ses, 327 struct TCP_Server_Info *server); 328 329 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 330 const char *tree, struct cifs_tcon *tcon, 331 const struct nls_table *); 332 333 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 334 const char *searchName, struct cifs_sb_info *cifs_sb, 335 __u16 *searchHandle, __u16 search_flags, 336 struct cifs_search_info *psrch_inf, 337 bool msearch); 338 339 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 340 __u16 searchHandle, __u16 search_flags, 341 struct cifs_search_info *psrch_inf); 342 343 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 344 const __u16 search_handle); 345 346 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 347 u16 netfid, FILE_ALL_INFO *pFindData); 348 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 349 const char *search_Name, FILE_ALL_INFO *data, 350 int legacy /* whether to use old info level */, 351 const struct nls_table *nls_codepage, int remap); 352 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 353 const char *search_name, FILE_ALL_INFO *data, 354 const struct nls_table *nls_codepage, int remap); 355 356 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 357 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 358 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 359 struct cifs_tcon *tcon, 360 const unsigned char *searchName, 361 FILE_UNIX_BASIC_INFO *pFindData, 362 const struct nls_table *nls_codepage, int remap); 363 364 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 365 const char *search_name, 366 struct dfs_info3_param **target_nodes, 367 unsigned int *num_of_nodes, 368 const struct nls_table *nls_codepage, int remap); 369 370 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 371 unsigned int *num_of_nodes, 372 struct dfs_info3_param **target_nodes, 373 const struct nls_table *nls_codepage, int remap, 374 const char *searchName, bool is_unicode); 375 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 376 struct cifs_sb_info *cifs_sb, 377 struct smb3_fs_context *ctx); 378 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 379 struct kstatfs *FSData); 380 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 381 struct kstatfs *FSData); 382 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 383 __u64 cap); 384 385 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 386 struct cifs_tcon *tcon); 387 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 388 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 389 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 390 struct kstatfs *FSData); 391 392 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 393 const char *fileName, const FILE_BASIC_INFO *data, 394 const struct nls_table *nls_codepage, 395 struct cifs_sb_info *cifs_sb); 396 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 397 const FILE_BASIC_INFO *data, __u16 fid, 398 __u32 pid_of_opener); 399 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 400 struct cifs_tcon *tcon, 401 bool delete_file, __u16 fid, 402 __u32 pid_of_opener); 403 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 404 const char *file_name, __u64 size, 405 struct cifs_sb_info *cifs_sb, bool set_allocation); 406 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 407 struct cifsFileInfo *cfile, __u64 size, 408 bool set_allocation); 409 410 struct cifs_unix_set_info_args { 411 __u64 ctime; 412 __u64 atime; 413 __u64 mtime; 414 __u64 mode; 415 kuid_t uid; 416 kgid_t gid; 417 dev_t device; 418 }; 419 420 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 421 struct cifs_tcon *tcon, 422 const struct cifs_unix_set_info_args *args, 423 u16 fid, u32 pid_of_opener); 424 425 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 426 struct cifs_tcon *tcon, const char *file_name, 427 const struct cifs_unix_set_info_args *args, 428 const struct nls_table *nls_codepage, 429 int remap); 430 431 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 432 umode_t mode, struct cifs_tcon *tcon, 433 const char *name, struct cifs_sb_info *cifs_sb); 434 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 435 const char *name, struct cifs_sb_info *cifs_sb); 436 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 437 const char *name, __u16 type, 438 const struct nls_table *nls_codepage, 439 int remap_special_chars); 440 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 441 const char *name, struct cifs_sb_info *cifs_sb); 442 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 443 struct dentry *source_dentry, 444 const char *from_name, const char *to_name, 445 struct cifs_sb_info *cifs_sb); 446 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 447 int netfid, const char *target_name, 448 const struct nls_table *nls_codepage, 449 int remap_special_chars); 450 int CIFSCreateHardLink(const unsigned int xid, 451 struct cifs_tcon *tcon, 452 struct dentry *source_dentry, 453 const char *from_name, const char *to_name, 454 struct cifs_sb_info *cifs_sb); 455 extern int CIFSUnixCreateHardLink(const unsigned int xid, 456 struct cifs_tcon *tcon, 457 const char *fromName, const char *toName, 458 const struct nls_table *nls_codepage, 459 int remap_special_chars); 460 extern int CIFSUnixCreateSymLink(const unsigned int xid, 461 struct cifs_tcon *tcon, 462 const char *fromName, const char *toName, 463 const struct nls_table *nls_codepage, int remap); 464 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 465 struct cifs_tcon *tcon, 466 const unsigned char *searchName, char **syminfo, 467 const struct nls_table *nls_codepage, int remap); 468 extern int cifs_query_reparse_point(const unsigned int xid, 469 struct cifs_tcon *tcon, 470 struct cifs_sb_info *cifs_sb, 471 const char *full_path, 472 u32 *tag, struct kvec *rsp, 473 int *rsp_buftype); 474 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 475 __u16 fid, char **symlinkinfo, 476 const struct nls_table *nls_codepage); 477 extern int CIFSSMB_set_compression(const unsigned int xid, 478 struct cifs_tcon *tcon, __u16 fid); 479 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 480 int *oplock, FILE_ALL_INFO *buf); 481 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 482 const char *fileName, const int disposition, 483 const int access_flags, const int omode, 484 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 485 const struct nls_table *nls_codepage, int remap); 486 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 487 u32 posix_flags, __u64 mode, __u16 *netfid, 488 FILE_UNIX_BASIC_INFO *pRetData, 489 __u32 *pOplock, const char *name, 490 const struct nls_table *nls_codepage, int remap); 491 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 492 const int smb_file_id); 493 494 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 495 const int smb_file_id); 496 497 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 498 unsigned int *nbytes, char **buf, 499 int *return_buf_type); 500 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 501 unsigned int *nbytes, const char *buf); 502 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 503 unsigned int *nbytes, struct kvec *iov, const int nvec); 504 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 505 const char *search_name, __u64 *inode_number, 506 const struct nls_table *nls_codepage, 507 int remap); 508 509 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 510 const __u16 netfid, const __u8 lock_type, 511 const __u32 num_unlock, const __u32 num_lock, 512 LOCKING_ANDX_RANGE *buf); 513 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 514 const __u16 netfid, const __u32 netpid, const __u64 len, 515 const __u64 offset, const __u32 numUnlock, 516 const __u32 numLock, const __u8 lockType, 517 const bool waitFlag, const __u8 oplock_level); 518 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 519 const __u16 smb_file_id, const __u32 netpid, 520 const loff_t start_offset, const __u64 len, 521 struct file_lock *, const __u16 lock_type, 522 const bool waitFlag); 523 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 524 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 525 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 526 527 extern struct cifs_ses *sesInfoAlloc(void); 528 extern void sesInfoFree(struct cifs_ses *); 529 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled); 530 extern void tconInfoFree(struct cifs_tcon *); 531 532 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 533 __u32 *pexpected_response_sequence_number); 534 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 535 __u32 *); 536 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 537 extern int cifs_verify_signature(struct smb_rqst *rqst, 538 struct TCP_Server_Info *server, 539 __u32 expected_sequence_number); 540 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 541 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 542 extern int calc_seckey(struct cifs_ses *); 543 extern int generate_smb30signingkey(struct cifs_ses *ses, 544 struct TCP_Server_Info *server); 545 extern int generate_smb311signingkey(struct cifs_ses *ses, 546 struct TCP_Server_Info *server); 547 548 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 549 extern int CIFSSMBCopy(unsigned int xid, 550 struct cifs_tcon *source_tcon, 551 const char *fromName, 552 const __u16 target_tid, 553 const char *toName, const int flags, 554 const struct nls_table *nls_codepage, 555 int remap_special_chars); 556 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 557 const unsigned char *searchName, 558 const unsigned char *ea_name, char *EAData, 559 size_t bufsize, struct cifs_sb_info *cifs_sb); 560 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 561 const char *fileName, const char *ea_name, 562 const void *ea_value, const __u16 ea_value_len, 563 const struct nls_table *nls_codepage, 564 struct cifs_sb_info *cifs_sb); 565 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 566 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); 567 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 568 struct cifs_ntsd *, __u32, int); 569 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 570 const unsigned char *searchName, 571 struct posix_acl **acl, const int acl_type, 572 const struct nls_table *nls_codepage, int remap); 573 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 574 const unsigned char *fileName, 575 const struct posix_acl *acl, const int acl_type, 576 const struct nls_table *nls_codepage, int remap); 577 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 578 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 579 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 580 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 581 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 582 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 583 struct cifs_sb_info *cifs_sb, 584 struct cifs_fattr *fattr, 585 const unsigned char *path); 586 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 587 const struct nls_table *codepage); 588 589 extern struct TCP_Server_Info * 590 cifs_find_tcp_session(struct smb3_fs_context *ctx); 591 592 void __cifs_put_smb_ses(struct cifs_ses *ses); 593 594 extern struct cifs_ses * 595 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 596 597 void cifs_readdata_release(struct kref *refcount); 598 int cifs_async_readv(struct cifs_readdata *rdata); 599 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 600 601 int cifs_async_writev(struct cifs_writedata *wdata, 602 void (*release)(struct kref *kref)); 603 void cifs_writev_complete(struct work_struct *work); 604 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete); 605 void cifs_writedata_release(struct kref *refcount); 606 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 607 struct cifs_sb_info *cifs_sb, 608 const unsigned char *path, char *pbuf, 609 unsigned int *pbytes_read); 610 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 611 struct cifs_sb_info *cifs_sb, 612 const unsigned char *path, char *pbuf, 613 unsigned int *pbytes_written); 614 int __cifs_calc_signature(struct smb_rqst *rqst, 615 struct TCP_Server_Info *server, char *signature, 616 struct shash_desc *shash); 617 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 618 enum securityEnum); 619 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); 620 void cifs_aio_ctx_release(struct kref *refcount); 621 622 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 623 void cifs_free_hash(struct shash_desc **sdesc); 624 625 struct cifs_chan * 626 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server); 627 int cifs_try_adding_channels(struct cifs_ses *ses); 628 bool is_server_using_iface(struct TCP_Server_Info *server, 629 struct cifs_server_iface *iface); 630 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 631 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 632 633 int 634 cifs_ses_get_chan_index(struct cifs_ses *ses, 635 struct TCP_Server_Info *server); 636 void 637 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 638 struct TCP_Server_Info *server); 639 void 640 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 641 struct TCP_Server_Info *server); 642 bool 643 cifs_chan_in_reconnect(struct cifs_ses *ses, 644 struct TCP_Server_Info *server); 645 void 646 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 647 struct TCP_Server_Info *server); 648 void 649 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 650 struct TCP_Server_Info *server); 651 bool 652 cifs_chan_needs_reconnect(struct cifs_ses *ses, 653 struct TCP_Server_Info *server); 654 bool 655 cifs_chan_is_iface_active(struct cifs_ses *ses, 656 struct TCP_Server_Info *server); 657 void 658 cifs_disable_secondary_channels(struct cifs_ses *ses); 659 void 660 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 661 int 662 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 663 664 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 665 int copy_path_name(char *dst, const char *src); 666 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 667 int resp_buftype, 668 struct cifs_search_info *srch_inf); 669 670 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 671 void cifs_put_tcp_super(struct super_block *sb); 672 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 673 char *extract_hostname(const char *unc); 674 char *extract_sharename(const char *unc); 675 int parse_reparse_point(struct reparse_data_buffer *buf, 676 u32 plen, struct cifs_sb_info *cifs_sb, 677 bool unicode, struct cifs_open_info_data *data); 678 int cifs_sfu_make_node(unsigned int xid, struct inode *inode, 679 struct dentry *dentry, struct cifs_tcon *tcon, 680 const char *full_path, umode_t mode, dev_t dev); 681 682 #ifdef CONFIG_CIFS_DFS_UPCALL 683 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 684 const char *old_path, 685 const struct nls_table *nls_codepage, 686 struct dfs_info3_param *referral, int remap) 687 { 688 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 689 referral, NULL); 690 } 691 692 int match_target_ip(struct TCP_Server_Info *server, 693 const char *share, size_t share_len, 694 bool *result); 695 int cifs_inval_name_dfs_link_error(const unsigned int xid, 696 struct cifs_tcon *tcon, 697 struct cifs_sb_info *cifs_sb, 698 const char *full_path, 699 bool *islink); 700 #else 701 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 702 struct cifs_tcon *tcon, 703 struct cifs_sb_info *cifs_sb, 704 const char *full_path, 705 bool *islink) 706 { 707 *islink = false; 708 return 0; 709 } 710 #endif 711 712 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 713 { 714 if (cifs_sb && (backup_cred(cifs_sb))) 715 return options | CREATE_OPEN_BACKUP_INTENT; 716 else 717 return options; 718 } 719 720 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon); 721 void cifs_put_tcon_super(struct super_block *sb); 722 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 723 724 /* Put references of @ses and @ses->dfs_root_ses */ 725 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 726 { 727 struct cifs_ses *rses = ses->dfs_root_ses; 728 729 __cifs_put_smb_ses(ses); 730 if (rses) 731 __cifs_put_smb_ses(rses); 732 } 733 734 /* Get an active reference of @ses and @ses->dfs_root_ses. 735 * 736 * NOTE: make sure to call this function when incrementing reference count of 737 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 738 * will also get its reference count incremented. 739 * 740 * cifs_put_smb_ses() will put both references, so call it when you're done. 741 */ 742 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 743 { 744 lockdep_assert_held(&cifs_tcp_ses_lock); 745 746 ses->ses_count++; 747 if (ses->dfs_root_ses) 748 ses->dfs_root_ses->ses_count++; 749 } 750 751 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 752 { 753 if (strlen(s1) != strlen(s2)) 754 return false; 755 for (; *s1; s1++, s2++) { 756 if (*s1 == '/' || *s1 == '\\') { 757 if (*s2 != '/' && *s2 != '\\') 758 return false; 759 } else if (tolower(*s1) != tolower(*s2)) 760 return false; 761 } 762 return true; 763 } 764 765 static inline void release_mid(struct mid_q_entry *mid) 766 { 767 kref_put(&mid->refcount, __release_mid); 768 } 769 770 static inline void cifs_free_open_info(struct cifs_open_info_data *data) 771 { 772 kfree(data->symlink_target); 773 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); 774 memset(data, 0, sizeof(*data)); 775 } 776 777 #endif /* _CIFSPROTO_H */ 778