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 *cifsInode, __u64 eof, 148 bool from_readdir); 149 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 150 unsigned int bytes_written); 151 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 152 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 153 int flags, 154 struct cifsFileInfo **ret_file); 155 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 156 int flags, 157 struct cifsFileInfo **ret_file); 158 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 159 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 160 struct cifsFileInfo **ret_file); 161 extern unsigned int smbCalcSize(void *buf); 162 extern int decode_negTokenInit(unsigned char *security_blob, int length, 163 struct TCP_Server_Info *server); 164 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 165 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 166 extern int map_smb_to_linux_error(char *buf, bool logErr); 167 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 168 extern void header_assemble(struct smb_hdr *, char /* command */ , 169 const struct cifs_tcon *, int /* length of 170 fixed section (word count) in two byte units */); 171 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 172 struct cifs_ses *ses, 173 void **request_buf); 174 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 175 enum securityEnum requested); 176 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 177 struct TCP_Server_Info *server, 178 const struct nls_table *nls_cp); 179 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 180 extern u64 cifs_UnixTimeToNT(struct timespec64); 181 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 182 int offset); 183 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 184 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 185 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 186 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 187 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 188 struct file_lock *flock, const unsigned int xid); 189 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 190 191 extern void cifs_down_write(struct rw_semaphore *sem); 192 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 193 struct tcon_link *tlink, __u32 oplock, 194 const char *symlink_target); 195 extern int cifs_posix_open(const char *full_path, struct inode **inode, 196 struct super_block *sb, int mode, 197 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 198 unsigned int xid); 199 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 200 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 201 FILE_UNIX_BASIC_INFO *info, 202 struct cifs_sb_info *cifs_sb); 203 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 204 struct cifs_sb_info *); 205 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr, 206 bool from_readdir); 207 extern struct inode *cifs_iget(struct super_block *sb, 208 struct cifs_fattr *fattr); 209 210 int cifs_get_inode_info(struct inode **inode, const char *full_path, 211 struct cifs_open_info_data *data, struct super_block *sb, int xid, 212 const struct cifs_fid *fid); 213 extern int smb311_posix_get_inode_info(struct inode **inode, 214 const char *full_path, 215 struct cifs_open_info_data *data, 216 struct super_block *sb, 217 const unsigned int xid); 218 extern int cifs_get_inode_info_unix(struct inode **pinode, 219 const unsigned char *search_path, 220 struct super_block *sb, unsigned int xid); 221 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 222 unsigned int xid, const char *full_path, __u32 dosattr); 223 extern int cifs_rename_pending_delete(const char *full_path, 224 struct dentry *dentry, 225 const unsigned int xid); 226 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid, 227 struct cifs_fattr *fattr, uint sidtype); 228 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 229 struct cifs_fattr *fattr, struct inode *inode, 230 bool get_mode_from_special_sid, 231 const char *path, const struct cifs_fid *pfid); 232 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 233 kuid_t uid, kgid_t gid); 234 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, 235 const char *, u32 *, u32); 236 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *, 237 const struct cifs_fid *, u32 *, u32); 238 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 239 struct dentry *dentry, int type); 240 extern int cifs_set_acl(struct mnt_idmap *idmap, 241 struct dentry *dentry, struct posix_acl *acl, int type); 242 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, 243 const char *, int); 244 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace); 245 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode); 246 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace); 247 248 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 249 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 250 unsigned int to_read); 251 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 252 size_t to_read); 253 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server, 254 struct page *page, 255 unsigned int page_offset, 256 unsigned int to_read); 257 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 258 struct iov_iter *iter, 259 unsigned int to_read); 260 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 261 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 262 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 263 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 264 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 265 extern int cifs_match_super(struct super_block *, void *); 266 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 267 extern void cifs_umount(struct cifs_sb_info *); 268 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 269 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 270 271 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 272 __u64 length, __u8 type, __u16 flags, 273 struct cifsLockInfo **conf_lock, 274 int rw_check); 275 extern void cifs_add_pending_open(struct cifs_fid *fid, 276 struct tcon_link *tlink, 277 struct cifs_pending_open *open); 278 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 279 struct tcon_link *tlink, 280 struct cifs_pending_open *open); 281 extern void cifs_del_pending_open(struct cifs_pending_open *open); 282 283 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 284 struct cifs_deferred_close **dclose); 285 286 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 287 struct cifs_deferred_close *dclose); 288 289 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 290 291 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 292 293 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 294 295 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 296 const char *path); 297 298 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode, 299 const char *path); 300 301 extern struct TCP_Server_Info * 302 cifs_get_tcp_session(struct smb3_fs_context *ctx, 303 struct TCP_Server_Info *primary_server); 304 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 305 int from_reconnect); 306 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 307 308 extern void cifs_release_automount_timer(void); 309 310 void cifs_proc_init(void); 311 void cifs_proc_clean(void); 312 313 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 314 extern void cifs_free_llist(struct list_head *llist); 315 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 316 317 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, 318 const struct nls_table *nlsc); 319 320 extern int cifs_negotiate_protocol(const unsigned int xid, 321 struct cifs_ses *ses, 322 struct TCP_Server_Info *server); 323 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 324 struct TCP_Server_Info *server, 325 struct nls_table *nls_info); 326 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 327 extern int CIFSSMBNegotiate(const unsigned int xid, 328 struct cifs_ses *ses, 329 struct TCP_Server_Info *server); 330 331 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 332 const char *tree, struct cifs_tcon *tcon, 333 const struct nls_table *); 334 335 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 336 const char *searchName, struct cifs_sb_info *cifs_sb, 337 __u16 *searchHandle, __u16 search_flags, 338 struct cifs_search_info *psrch_inf, 339 bool msearch); 340 341 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 342 __u16 searchHandle, __u16 search_flags, 343 struct cifs_search_info *psrch_inf); 344 345 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 346 const __u16 search_handle); 347 348 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 349 u16 netfid, FILE_ALL_INFO *pFindData); 350 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 351 const char *search_Name, FILE_ALL_INFO *data, 352 int legacy /* whether to use old info level */, 353 const struct nls_table *nls_codepage, int remap); 354 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 355 const char *search_name, FILE_ALL_INFO *data, 356 const struct nls_table *nls_codepage, int remap); 357 358 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 359 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 360 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 361 struct cifs_tcon *tcon, 362 const unsigned char *searchName, 363 FILE_UNIX_BASIC_INFO *pFindData, 364 const struct nls_table *nls_codepage, int remap); 365 366 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 367 const char *search_name, 368 struct dfs_info3_param **target_nodes, 369 unsigned int *num_of_nodes, 370 const struct nls_table *nls_codepage, int remap); 371 372 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 373 unsigned int *num_of_nodes, 374 struct dfs_info3_param **target_nodes, 375 const struct nls_table *nls_codepage, int remap, 376 const char *searchName, bool is_unicode); 377 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 378 struct cifs_sb_info *cifs_sb, 379 struct smb3_fs_context *ctx); 380 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 381 struct kstatfs *FSData); 382 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 383 struct kstatfs *FSData); 384 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 385 __u64 cap); 386 387 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 388 struct cifs_tcon *tcon); 389 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 390 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 391 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 392 struct kstatfs *FSData); 393 394 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 395 const char *fileName, const FILE_BASIC_INFO *data, 396 const struct nls_table *nls_codepage, 397 struct cifs_sb_info *cifs_sb); 398 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 399 const FILE_BASIC_INFO *data, __u16 fid, 400 __u32 pid_of_opener); 401 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 402 struct cifs_tcon *tcon, 403 bool delete_file, __u16 fid, 404 __u32 pid_of_opener); 405 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 406 const char *file_name, __u64 size, 407 struct cifs_sb_info *cifs_sb, bool set_allocation, 408 struct dentry *dentry); 409 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 410 struct cifsFileInfo *cfile, __u64 size, 411 bool set_allocation); 412 413 struct cifs_unix_set_info_args { 414 __u64 ctime; 415 __u64 atime; 416 __u64 mtime; 417 __u64 mode; 418 kuid_t uid; 419 kgid_t gid; 420 dev_t device; 421 }; 422 423 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 424 struct cifs_tcon *tcon, 425 const struct cifs_unix_set_info_args *args, 426 u16 fid, u32 pid_of_opener); 427 428 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 429 struct cifs_tcon *tcon, const char *file_name, 430 const struct cifs_unix_set_info_args *args, 431 const struct nls_table *nls_codepage, 432 int remap); 433 434 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 435 umode_t mode, struct cifs_tcon *tcon, 436 const char *name, struct cifs_sb_info *cifs_sb); 437 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 438 const char *name, struct cifs_sb_info *cifs_sb); 439 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 440 const char *name, __u16 type, 441 const struct nls_table *nls_codepage, 442 int remap_special_chars); 443 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 444 const char *name, struct cifs_sb_info *cifs_sb, 445 struct dentry *dentry); 446 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 447 struct dentry *source_dentry, 448 const char *from_name, const char *to_name, 449 struct cifs_sb_info *cifs_sb); 450 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 451 int netfid, const char *target_name, 452 const struct nls_table *nls_codepage, 453 int remap_special_chars); 454 int CIFSCreateHardLink(const unsigned int xid, 455 struct cifs_tcon *tcon, 456 struct dentry *source_dentry, 457 const char *from_name, const char *to_name, 458 struct cifs_sb_info *cifs_sb); 459 extern int CIFSUnixCreateHardLink(const unsigned int xid, 460 struct cifs_tcon *tcon, 461 const char *fromName, const char *toName, 462 const struct nls_table *nls_codepage, 463 int remap_special_chars); 464 extern int CIFSUnixCreateSymLink(const unsigned int xid, 465 struct cifs_tcon *tcon, 466 const char *fromName, const char *toName, 467 const struct nls_table *nls_codepage, int remap); 468 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 469 struct cifs_tcon *tcon, 470 const unsigned char *searchName, char **syminfo, 471 const struct nls_table *nls_codepage, int remap); 472 extern int cifs_query_reparse_point(const unsigned int xid, 473 struct cifs_tcon *tcon, 474 struct cifs_sb_info *cifs_sb, 475 const char *full_path, 476 u32 *tag, struct kvec *rsp, 477 int *rsp_buftype); 478 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 479 __u16 fid, char **symlinkinfo, 480 const struct nls_table *nls_codepage); 481 extern int CIFSSMB_set_compression(const unsigned int xid, 482 struct cifs_tcon *tcon, __u16 fid); 483 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 484 int *oplock, FILE_ALL_INFO *buf); 485 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 486 const char *fileName, const int disposition, 487 const int access_flags, const int omode, 488 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 489 const struct nls_table *nls_codepage, int remap); 490 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 491 u32 posix_flags, __u64 mode, __u16 *netfid, 492 FILE_UNIX_BASIC_INFO *pRetData, 493 __u32 *pOplock, const char *name, 494 const struct nls_table *nls_codepage, int remap); 495 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 496 const int smb_file_id); 497 498 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 499 const int smb_file_id); 500 501 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 502 unsigned int *nbytes, char **buf, 503 int *return_buf_type); 504 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 505 unsigned int *nbytes, const char *buf); 506 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 507 unsigned int *nbytes, struct kvec *iov, const int nvec); 508 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 509 const char *search_name, __u64 *inode_number, 510 const struct nls_table *nls_codepage, 511 int remap); 512 513 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 514 const __u16 netfid, const __u8 lock_type, 515 const __u32 num_unlock, const __u32 num_lock, 516 LOCKING_ANDX_RANGE *buf); 517 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 518 const __u16 netfid, const __u32 netpid, const __u64 len, 519 const __u64 offset, const __u32 numUnlock, 520 const __u32 numLock, const __u8 lockType, 521 const bool waitFlag, const __u8 oplock_level); 522 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 523 const __u16 smb_file_id, const __u32 netpid, 524 const loff_t start_offset, const __u64 len, 525 struct file_lock *, const __u16 lock_type, 526 const bool waitFlag); 527 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 528 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 529 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 530 531 extern struct cifs_ses *sesInfoAlloc(void); 532 extern void sesInfoFree(struct cifs_ses *); 533 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled, 534 enum smb3_tcon_ref_trace trace); 535 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 536 537 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 538 __u32 *pexpected_response_sequence_number); 539 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 540 __u32 *); 541 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 542 extern int cifs_verify_signature(struct smb_rqst *rqst, 543 struct TCP_Server_Info *server, 544 __u32 expected_sequence_number); 545 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 546 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 547 extern int calc_seckey(struct cifs_ses *); 548 extern int generate_smb30signingkey(struct cifs_ses *ses, 549 struct TCP_Server_Info *server); 550 extern int generate_smb311signingkey(struct cifs_ses *ses, 551 struct TCP_Server_Info *server); 552 553 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 554 extern int CIFSSMBCopy(unsigned int xid, 555 struct cifs_tcon *source_tcon, 556 const char *fromName, 557 const __u16 target_tid, 558 const char *toName, const int flags, 559 const struct nls_table *nls_codepage, 560 int remap_special_chars); 561 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 562 const unsigned char *searchName, 563 const unsigned char *ea_name, char *EAData, 564 size_t bufsize, struct cifs_sb_info *cifs_sb); 565 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 566 const char *fileName, const char *ea_name, 567 const void *ea_value, const __u16 ea_value_len, 568 const struct nls_table *nls_codepage, 569 struct cifs_sb_info *cifs_sb); 570 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 571 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); 572 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 573 struct cifs_ntsd *, __u32, int); 574 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 575 const unsigned char *searchName, 576 struct posix_acl **acl, const int acl_type, 577 const struct nls_table *nls_codepage, int remap); 578 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 579 const unsigned char *fileName, 580 const struct posix_acl *acl, const int acl_type, 581 const struct nls_table *nls_codepage, int remap); 582 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 583 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 584 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 585 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 586 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 587 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 588 struct cifs_sb_info *cifs_sb, 589 struct cifs_fattr *fattr, 590 const unsigned char *path); 591 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 592 const struct nls_table *codepage); 593 594 extern struct TCP_Server_Info * 595 cifs_find_tcp_session(struct smb3_fs_context *ctx); 596 597 void __cifs_put_smb_ses(struct cifs_ses *ses); 598 599 extern struct cifs_ses * 600 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 601 602 void cifs_readdata_release(struct kref *refcount); 603 int cifs_async_readv(struct cifs_readdata *rdata); 604 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 605 606 int cifs_async_writev(struct cifs_writedata *wdata, 607 void (*release)(struct kref *kref)); 608 void cifs_writev_complete(struct work_struct *work); 609 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete); 610 void cifs_writedata_release(struct kref *refcount); 611 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 612 struct cifs_sb_info *cifs_sb, 613 const unsigned char *path, char *pbuf, 614 unsigned int *pbytes_read); 615 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 616 struct cifs_sb_info *cifs_sb, 617 const unsigned char *path, char *pbuf, 618 unsigned int *pbytes_written); 619 int __cifs_calc_signature(struct smb_rqst *rqst, 620 struct TCP_Server_Info *server, char *signature, 621 struct shash_desc *shash); 622 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 623 enum securityEnum); 624 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); 625 void cifs_aio_ctx_release(struct kref *refcount); 626 627 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 628 void cifs_free_hash(struct shash_desc **sdesc); 629 630 struct cifs_chan * 631 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server); 632 int cifs_try_adding_channels(struct cifs_ses *ses); 633 bool is_server_using_iface(struct TCP_Server_Info *server, 634 struct cifs_server_iface *iface); 635 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 636 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 637 638 int 639 cifs_ses_get_chan_index(struct cifs_ses *ses, 640 struct TCP_Server_Info *server); 641 void 642 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 643 struct TCP_Server_Info *server); 644 void 645 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 646 struct TCP_Server_Info *server); 647 bool 648 cifs_chan_in_reconnect(struct cifs_ses *ses, 649 struct TCP_Server_Info *server); 650 void 651 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 652 struct TCP_Server_Info *server); 653 void 654 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 655 struct TCP_Server_Info *server); 656 bool 657 cifs_chan_needs_reconnect(struct cifs_ses *ses, 658 struct TCP_Server_Info *server); 659 bool 660 cifs_chan_is_iface_active(struct cifs_ses *ses, 661 struct TCP_Server_Info *server); 662 void 663 cifs_disable_secondary_channels(struct cifs_ses *ses); 664 void 665 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 666 int 667 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 668 669 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 670 int copy_path_name(char *dst, const char *src); 671 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 672 int resp_buftype, 673 struct cifs_search_info *srch_inf); 674 675 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 676 void cifs_put_tcp_super(struct super_block *sb); 677 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 678 char *extract_hostname(const char *unc); 679 char *extract_sharename(const char *unc); 680 int parse_reparse_point(struct reparse_data_buffer *buf, 681 u32 plen, struct cifs_sb_info *cifs_sb, 682 const char *full_path, 683 bool unicode, struct cifs_open_info_data *data); 684 int cifs_sfu_make_node(unsigned int xid, struct inode *inode, 685 struct dentry *dentry, struct cifs_tcon *tcon, 686 const char *full_path, umode_t mode, dev_t dev); 687 688 #ifdef CONFIG_CIFS_DFS_UPCALL 689 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 690 const char *old_path, 691 const struct nls_table *nls_codepage, 692 struct dfs_info3_param *referral, int remap) 693 { 694 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 695 referral, NULL); 696 } 697 698 int match_target_ip(struct TCP_Server_Info *server, 699 const char *share, size_t share_len, 700 bool *result); 701 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 #else 707 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 708 struct cifs_tcon *tcon, 709 struct cifs_sb_info *cifs_sb, 710 const char *full_path, 711 bool *islink) 712 { 713 *islink = false; 714 return 0; 715 } 716 #endif 717 718 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 719 { 720 if (cifs_sb && (backup_cred(cifs_sb))) 721 return options | CREATE_OPEN_BACKUP_INTENT; 722 else 723 return options; 724 } 725 726 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 727 728 /* Put references of @ses and its children */ 729 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 730 { 731 struct cifs_ses *next; 732 733 do { 734 next = ses->dfs_root_ses; 735 __cifs_put_smb_ses(ses); 736 } while ((ses = next)); 737 } 738 739 /* Get an active reference of @ses and its children. 740 * 741 * NOTE: make sure to call this function when incrementing reference count of 742 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 743 * will also get its reference count incremented. 744 * 745 * cifs_put_smb_ses() will put all references, so call it when you're done. 746 */ 747 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 748 { 749 lockdep_assert_held(&cifs_tcp_ses_lock); 750 751 for (; ses; ses = ses->dfs_root_ses) 752 ses->ses_count++; 753 } 754 755 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 756 { 757 if (strlen(s1) != strlen(s2)) 758 return false; 759 for (; *s1; s1++, s2++) { 760 if (*s1 == '/' || *s1 == '\\') { 761 if (*s2 != '/' && *s2 != '\\') 762 return false; 763 } else if (tolower(*s1) != tolower(*s2)) 764 return false; 765 } 766 return true; 767 } 768 769 static inline void release_mid(struct mid_q_entry *mid) 770 { 771 kref_put(&mid->refcount, __release_mid); 772 } 773 774 static inline void cifs_free_open_info(struct cifs_open_info_data *data) 775 { 776 kfree(data->symlink_target); 777 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); 778 memset(data, 0, sizeof(*data)); 779 } 780 781 #endif /* _CIFSPROTO_H */ 782