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); alloc_dentry_path(void)66 static inline void *alloc_dentry_path(void) 67 { 68 return __getname(); 69 } 70 free_dentry_path(void * page)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 size_t size, size_t *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 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result, 152 bool was_async); 153 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 154 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 155 int flags, 156 struct cifsFileInfo **ret_file); 157 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 158 int flags, 159 struct cifsFileInfo **ret_file); 160 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 161 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 162 struct cifsFileInfo **ret_file); 163 extern unsigned int smbCalcSize(void *buf); 164 extern int decode_negTokenInit(unsigned char *security_blob, int length, 165 struct TCP_Server_Info *server); 166 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 167 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 168 extern int map_smb_to_linux_error(char *buf, bool logErr); 169 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 170 extern void header_assemble(struct smb_hdr *, char /* command */ , 171 const struct cifs_tcon *, int /* length of 172 fixed section (word count) in two byte units */); 173 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 174 struct cifs_ses *ses, 175 void **request_buf); 176 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 177 enum securityEnum requested); 178 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 179 struct TCP_Server_Info *server, 180 const struct nls_table *nls_cp); 181 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 182 extern u64 cifs_UnixTimeToNT(struct timespec64); 183 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 184 int offset); 185 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 186 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 187 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 188 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 189 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 190 struct file_lock *flock, const unsigned int xid); 191 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 192 193 extern void cifs_down_write(struct rw_semaphore *sem); 194 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 195 struct tcon_link *tlink, __u32 oplock, 196 const char *symlink_target); 197 extern int cifs_posix_open(const char *full_path, struct inode **inode, 198 struct super_block *sb, int mode, 199 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 200 unsigned int xid); 201 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 202 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 203 FILE_UNIX_BASIC_INFO *info, 204 struct cifs_sb_info *cifs_sb); 205 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 206 struct cifs_sb_info *); 207 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr, 208 bool from_readdir); 209 extern struct inode *cifs_iget(struct super_block *sb, 210 struct cifs_fattr *fattr); 211 212 int cifs_get_inode_info(struct inode **inode, const char *full_path, 213 struct cifs_open_info_data *data, struct super_block *sb, int xid, 214 const struct cifs_fid *fid); 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 smb_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 smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino, 237 const char *path, u32 *plen, u32 info); 238 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb, 239 const struct cifs_fid *pfid, u32 *plen, u32 info); 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 smb_ntsd *pntsd, __u32 len, struct inode *ino, 245 const char *path, int flag); 246 extern unsigned int setup_authusers_ACE(struct smb_ace *pace); 247 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace, __u64 nmode); 248 extern unsigned int setup_special_user_owner_ACE(struct smb_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 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); 295 296 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode, 297 const char *path); 298 299 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, enum smb3_tcon_ref_trace trace); 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 struct dentry *dentry); 407 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 408 struct cifsFileInfo *cfile, __u64 size, 409 bool set_allocation); 410 411 struct cifs_unix_set_info_args { 412 __u64 ctime; 413 __u64 atime; 414 __u64 mtime; 415 __u64 mode; 416 kuid_t uid; 417 kgid_t gid; 418 dev_t device; 419 }; 420 421 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 422 struct cifs_tcon *tcon, 423 const struct cifs_unix_set_info_args *args, 424 u16 fid, u32 pid_of_opener); 425 426 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 427 struct cifs_tcon *tcon, const char *file_name, 428 const struct cifs_unix_set_info_args *args, 429 const struct nls_table *nls_codepage, 430 int remap); 431 432 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 433 umode_t mode, struct cifs_tcon *tcon, 434 const char *name, struct cifs_sb_info *cifs_sb); 435 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 436 const char *name, struct cifs_sb_info *cifs_sb); 437 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 438 const char *name, __u16 type, 439 const struct nls_table *nls_codepage, 440 int remap_special_chars); 441 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 442 const char *name, struct cifs_sb_info *cifs_sb, 443 struct dentry *dentry); 444 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 445 struct dentry *source_dentry, 446 const char *from_name, const char *to_name, 447 struct cifs_sb_info *cifs_sb); 448 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 449 int netfid, const char *target_name, 450 const struct nls_table *nls_codepage, 451 int remap_special_chars); 452 int CIFSCreateHardLink(const unsigned int xid, 453 struct cifs_tcon *tcon, 454 struct dentry *source_dentry, 455 const char *from_name, const char *to_name, 456 struct cifs_sb_info *cifs_sb); 457 extern int CIFSUnixCreateHardLink(const unsigned int xid, 458 struct cifs_tcon *tcon, 459 const char *fromName, const char *toName, 460 const struct nls_table *nls_codepage, 461 int remap_special_chars); 462 extern int CIFSUnixCreateSymLink(const unsigned int xid, 463 struct cifs_tcon *tcon, 464 const char *fromName, const char *toName, 465 const struct nls_table *nls_codepage, int remap); 466 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 467 struct cifs_tcon *tcon, 468 const unsigned char *searchName, char **syminfo, 469 const struct nls_table *nls_codepage, int remap); 470 extern int cifs_query_reparse_point(const unsigned int xid, 471 struct cifs_tcon *tcon, 472 struct cifs_sb_info *cifs_sb, 473 const char *full_path, 474 u32 *tag, struct kvec *rsp, 475 int *rsp_buftype); 476 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 477 __u16 fid, char **symlinkinfo, 478 const struct nls_table *nls_codepage); 479 extern int CIFSSMB_set_compression(const unsigned int xid, 480 struct cifs_tcon *tcon, __u16 fid); 481 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 482 int *oplock, FILE_ALL_INFO *buf); 483 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 484 const char *fileName, const int disposition, 485 const int access_flags, const int omode, 486 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 487 const struct nls_table *nls_codepage, int remap); 488 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 489 u32 posix_flags, __u64 mode, __u16 *netfid, 490 FILE_UNIX_BASIC_INFO *pRetData, 491 __u32 *pOplock, const char *name, 492 const struct nls_table *nls_codepage, int remap); 493 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 494 const int smb_file_id); 495 496 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 497 const int smb_file_id); 498 499 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 500 unsigned int *nbytes, char **buf, 501 int *return_buf_type); 502 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 503 unsigned int *nbytes, const char *buf); 504 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 505 unsigned int *nbytes, struct kvec *iov, const int nvec); 506 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 507 const char *search_name, __u64 *inode_number, 508 const struct nls_table *nls_codepage, 509 int remap); 510 511 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 512 const __u16 netfid, const __u8 lock_type, 513 const __u32 num_unlock, const __u32 num_lock, 514 LOCKING_ANDX_RANGE *buf); 515 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 516 const __u16 netfid, const __u32 netpid, const __u64 len, 517 const __u64 offset, const __u32 numUnlock, 518 const __u32 numLock, const __u8 lockType, 519 const bool waitFlag, const __u8 oplock_level); 520 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 521 const __u16 smb_file_id, const __u32 netpid, 522 const loff_t start_offset, const __u64 len, 523 struct file_lock *, const __u16 lock_type, 524 const bool waitFlag); 525 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 526 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 527 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 528 529 extern struct cifs_ses *sesInfoAlloc(void); 530 extern void sesInfoFree(struct cifs_ses *); 531 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled, 532 enum smb3_tcon_ref_trace trace); 533 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 534 535 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 536 __u32 *pexpected_response_sequence_number); 537 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 538 __u32 *); 539 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 540 extern int cifs_verify_signature(struct smb_rqst *rqst, 541 struct TCP_Server_Info *server, 542 __u32 expected_sequence_number); 543 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 544 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 545 extern int calc_seckey(struct cifs_ses *); 546 extern int generate_smb30signingkey(struct cifs_ses *ses, 547 struct TCP_Server_Info *server); 548 extern int generate_smb311signingkey(struct cifs_ses *ses, 549 struct TCP_Server_Info *server); 550 551 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 552 extern int CIFSSMBCopy(unsigned int xid, 553 struct cifs_tcon *source_tcon, 554 const char *fromName, 555 const __u16 target_tid, 556 const char *toName, const int flags, 557 const struct nls_table *nls_codepage, 558 int remap_special_chars); 559 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 560 const unsigned char *searchName, 561 const unsigned char *ea_name, char *EAData, 562 size_t bufsize, struct cifs_sb_info *cifs_sb); 563 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 564 const char *fileName, const char *ea_name, 565 const void *ea_value, const __u16 ea_value_len, 566 const struct nls_table *nls_codepage, 567 struct cifs_sb_info *cifs_sb); 568 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 569 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen); 570 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 571 struct smb_ntsd *pntsd, __u32 len, int aclflag); 572 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 573 const unsigned char *searchName, 574 struct posix_acl **acl, const int acl_type, 575 const struct nls_table *nls_codepage, int remap); 576 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 577 const unsigned char *fileName, 578 const struct posix_acl *acl, const int acl_type, 579 const struct nls_table *nls_codepage, int remap); 580 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 581 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 582 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 583 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 584 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 585 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 586 struct cifs_sb_info *cifs_sb, 587 struct cifs_fattr *fattr, 588 const unsigned char *path); 589 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 590 const struct nls_table *codepage); 591 592 extern struct TCP_Server_Info * 593 cifs_find_tcp_session(struct smb3_fs_context *ctx); 594 595 void __cifs_put_smb_ses(struct cifs_ses *ses); 596 597 extern struct cifs_ses * 598 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 599 600 int cifs_async_readv(struct cifs_io_subrequest *rdata); 601 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 602 603 void cifs_async_writev(struct cifs_io_subrequest *wdata); 604 void cifs_writev_complete(struct work_struct *work); 605 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 606 struct cifs_sb_info *cifs_sb, 607 const unsigned char *path, char *pbuf, 608 unsigned int *pbytes_read); 609 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 610 struct cifs_sb_info *cifs_sb, 611 const unsigned char *path, char *pbuf, 612 unsigned int *pbytes_written); 613 int __cifs_calc_signature(struct smb_rqst *rqst, 614 struct TCP_Server_Info *server, char *signature, 615 struct shash_desc *shash); 616 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 617 enum securityEnum); 618 619 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 620 void cifs_free_hash(struct shash_desc **sdesc); 621 622 int cifs_try_adding_channels(struct cifs_ses *ses); 623 bool is_server_using_iface(struct TCP_Server_Info *server, 624 struct cifs_server_iface *iface); 625 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 626 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 627 628 int 629 cifs_ses_get_chan_index(struct cifs_ses *ses, 630 struct TCP_Server_Info *server); 631 void 632 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 633 struct TCP_Server_Info *server); 634 void 635 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 636 struct TCP_Server_Info *server); 637 void 638 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 639 struct TCP_Server_Info *server); 640 void 641 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 642 struct TCP_Server_Info *server); 643 bool 644 cifs_chan_needs_reconnect(struct cifs_ses *ses, 645 struct TCP_Server_Info *server); 646 bool 647 cifs_chan_is_iface_active(struct cifs_ses *ses, 648 struct TCP_Server_Info *server); 649 void 650 cifs_disable_secondary_channels(struct cifs_ses *ses); 651 void 652 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 653 int 654 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 655 656 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 657 int copy_path_name(char *dst, const char *src); 658 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 659 int resp_buftype, 660 struct cifs_search_info *srch_inf); 661 662 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 663 void cifs_put_tcp_super(struct super_block *sb); 664 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 665 char *extract_hostname(const char *unc); 666 char *extract_sharename(const char *unc); 667 int parse_reparse_point(struct reparse_data_buffer *buf, 668 u32 plen, struct cifs_sb_info *cifs_sb, 669 bool unicode, struct cifs_open_info_data *data); 670 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode, 671 struct dentry *dentry, struct cifs_tcon *tcon, 672 const char *full_path, umode_t mode, dev_t dev, 673 const char *symname); 674 int cifs_sfu_make_node(unsigned int xid, struct inode *inode, 675 struct dentry *dentry, struct cifs_tcon *tcon, 676 const char *full_path, umode_t mode, dev_t dev); 677 678 #ifdef CONFIG_CIFS_DFS_UPCALL get_dfs_path(const unsigned int xid,struct cifs_ses * ses,const char * old_path,const struct nls_table * nls_codepage,struct dfs_info3_param * referral,int remap)679 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 680 const char *old_path, 681 const struct nls_table *nls_codepage, 682 struct dfs_info3_param *referral, int remap) 683 { 684 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 685 referral, NULL); 686 } 687 688 int match_target_ip(struct TCP_Server_Info *server, 689 const char *share, size_t share_len, 690 bool *result); 691 int cifs_inval_name_dfs_link_error(const unsigned int xid, 692 struct cifs_tcon *tcon, 693 struct cifs_sb_info *cifs_sb, 694 const char *full_path, 695 bool *islink); 696 #else cifs_inval_name_dfs_link_error(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,bool * islink)697 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 698 struct cifs_tcon *tcon, 699 struct cifs_sb_info *cifs_sb, 700 const char *full_path, 701 bool *islink) 702 { 703 *islink = false; 704 return 0; 705 } 706 #endif 707 cifs_create_options(struct cifs_sb_info * cifs_sb,int options)708 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 709 { 710 if (cifs_sb && (backup_cred(cifs_sb))) 711 return options | CREATE_OPEN_BACKUP_INTENT; 712 else 713 return options; 714 } 715 716 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 717 cifs_put_smb_ses(struct cifs_ses * ses)718 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 719 { 720 __cifs_put_smb_ses(ses); 721 } 722 723 /* Get an active reference of @ses and its children. 724 * 725 * NOTE: make sure to call this function when incrementing reference count of 726 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 727 * will also get its reference count incremented. 728 * 729 * cifs_put_smb_ses() will put all references, so call it when you're done. 730 */ cifs_smb_ses_inc_refcount(struct cifs_ses * ses)731 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 732 { 733 lockdep_assert_held(&cifs_tcp_ses_lock); 734 ses->ses_count++; 735 } 736 dfs_src_pathname_equal(const char * s1,const char * s2)737 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 738 { 739 if (strlen(s1) != strlen(s2)) 740 return false; 741 for (; *s1; s1++, s2++) { 742 if (*s1 == '/' || *s1 == '\\') { 743 if (*s2 != '/' && *s2 != '\\') 744 return false; 745 } else if (tolower(*s1) != tolower(*s2)) 746 return false; 747 } 748 return true; 749 } 750 release_mid(struct mid_q_entry * mid)751 static inline void release_mid(struct mid_q_entry *mid) 752 { 753 kref_put(&mid->refcount, __release_mid); 754 } 755 cifs_free_open_info(struct cifs_open_info_data * data)756 static inline void cifs_free_open_info(struct cifs_open_info_data *data) 757 { 758 kfree(data->symlink_target); 759 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); 760 memset(data, 0, sizeof(*data)); 761 } 762 763 #endif /* _CIFSPROTO_H */ 764