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 int smb_send_kvec(struct TCP_Server_Info *server, 35 struct msghdr *msg, 36 size_t *sent); 37 extern unsigned int _get_xid(void); 38 extern void _free_xid(unsigned int); 39 #define get_xid() \ 40 ({ \ 41 unsigned int __xid = _get_xid(); \ 42 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \ 43 __func__, __xid, \ 44 from_kuid(&init_user_ns, current_fsuid())); \ 45 trace_smb3_enter(__xid, __func__); \ 46 __xid; \ 47 }) 48 49 #define free_xid(curr_xid) \ 50 do { \ 51 _free_xid(curr_xid); \ 52 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \ 53 __func__, curr_xid, (int)rc); \ 54 if (rc) \ 55 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \ 56 else \ 57 trace_smb3_exit_done(curr_xid, __func__); \ 58 } while (0) 59 extern int init_cifs_idmap(void); 60 extern void exit_cifs_idmap(void); 61 extern int init_cifs_spnego(void); 62 extern void exit_cifs_spnego(void); 63 extern const char *build_path_from_dentry(struct dentry *, void *); 64 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, 65 const char *tree, int tree_len, 66 bool prefix); 67 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry, 68 void *page, bool prefix); 69 static inline void *alloc_dentry_path(void) 70 { 71 return __getname(); 72 } 73 74 static inline void free_dentry_path(void *page) 75 { 76 if (page) 77 __putname(page); 78 } 79 80 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx, 81 struct cifs_sb_info *cifs_sb, 82 struct cifs_tcon *tcon, 83 int add_treename); 84 extern char *build_wildcard_path_from_dentry(struct dentry *direntry); 85 char *cifs_build_devname(char *nodename, const char *prepath); 86 extern void delete_mid(struct mid_q_entry *mid); 87 void __release_mid(struct kref *refcount); 88 extern void cifs_wake_up_task(struct mid_q_entry *mid); 89 extern int cifs_handle_standard(struct TCP_Server_Info *server, 90 struct mid_q_entry *mid); 91 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx, 92 char dirsep); 93 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx); 94 extern int smb3_parse_opt(const char *options, const char *key, char **val); 95 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs); 96 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs); 97 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); 98 extern int cifs_call_async(struct TCP_Server_Info *server, 99 struct smb_rqst *rqst, 100 mid_receive_t *receive, mid_callback_t *callback, 101 mid_handle_t *handle, void *cbdata, const int flags, 102 const struct cifs_credits *exist_credits); 103 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses); 104 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, 105 struct TCP_Server_Info *server, 106 struct smb_rqst *rqst, int *resp_buf_type, 107 const int flags, struct kvec *resp_iov); 108 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses, 109 struct TCP_Server_Info *server, 110 const int flags, const int num_rqst, 111 struct smb_rqst *rqst, int *resp_buf_type, 112 struct kvec *resp_iov); 113 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, 114 struct smb_hdr * /* input */ , 115 struct smb_hdr * /* out */ , 116 int * /* bytes returned */ , const int); 117 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, 118 char *in_buf, int flags); 119 int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server); 120 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *, 121 struct TCP_Server_Info *, 122 struct smb_rqst *); 123 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *, 124 struct smb_rqst *); 125 int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, 126 struct smb_rqst *rqst); 127 extern int cifs_check_receive(struct mid_q_entry *mid, 128 struct TCP_Server_Info *server, bool log_error); 129 int wait_for_free_request(struct TCP_Server_Info *server, const int flags, 130 unsigned int *instance); 131 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, 132 size_t size, size_t *num, 133 struct cifs_credits *credits); 134 135 static inline int 136 send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, 137 struct mid_q_entry *mid) 138 { 139 return server->ops->send_cancel ? 140 server->ops->send_cancel(server, rqst, mid) : 0; 141 } 142 143 int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ); 144 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, 145 struct kvec *, int /* nvec to send */, 146 int * /* type of buf returned */, const int flags, 147 struct kvec * /* resp vec */); 148 extern int SendReceiveBlockingLock(const unsigned int xid, 149 struct cifs_tcon *ptcon, 150 struct smb_hdr *in_buf, 151 struct smb_hdr *out_buf, 152 int *bytes_returned); 153 154 void smb2_query_server_interfaces(struct work_struct *work); 155 void 156 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, 157 bool all_channels); 158 void 159 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, 160 bool mark_smb_session); 161 extern int cifs_reconnect(struct TCP_Server_Info *server, 162 bool mark_smb_session); 163 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr); 164 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *); 165 extern bool backup_cred(struct cifs_sb_info *); 166 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof, 167 bool from_readdir); 168 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 169 unsigned int bytes_written); 170 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result); 171 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 172 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 173 int flags, 174 struct cifsFileInfo **ret_file); 175 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 176 int flags, 177 struct cifsFileInfo **ret_file); 178 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 179 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 180 struct cifsFileInfo **ret_file); 181 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode, 182 struct file *file); 183 extern unsigned int smbCalcSize(void *buf); 184 extern int decode_negTokenInit(unsigned char *security_blob, int length, 185 struct TCP_Server_Info *server); 186 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 187 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 188 extern int map_smb_to_linux_error(char *buf, bool logErr); 189 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 190 extern void header_assemble(struct smb_hdr *, char /* command */ , 191 const struct cifs_tcon *, int /* length of 192 fixed section (word count) in two byte units */); 193 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 194 struct cifs_ses *ses, 195 void **request_buf); 196 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 197 enum securityEnum requested); 198 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 199 struct TCP_Server_Info *server, 200 const struct nls_table *nls_cp); 201 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 202 extern u64 cifs_UnixTimeToNT(struct timespec64); 203 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 204 int offset); 205 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 206 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 207 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 208 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 209 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 210 struct file_lock *flock, const unsigned int xid); 211 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 212 213 extern void cifs_down_write(struct rw_semaphore *sem); 214 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 215 struct tcon_link *tlink, __u32 oplock, 216 const char *symlink_target); 217 extern int cifs_posix_open(const char *full_path, struct inode **inode, 218 struct super_block *sb, int mode, 219 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 220 unsigned int xid); 221 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 222 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 223 FILE_UNIX_BASIC_INFO *info, 224 struct cifs_sb_info *cifs_sb); 225 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 226 struct cifs_sb_info *); 227 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr, 228 bool from_readdir); 229 extern struct inode *cifs_iget(struct super_block *sb, 230 struct cifs_fattr *fattr); 231 232 int cifs_get_inode_info(struct inode **inode, const char *full_path, 233 struct cifs_open_info_data *data, struct super_block *sb, int xid, 234 const struct cifs_fid *fid); 235 extern int smb311_posix_get_inode_info(struct inode **inode, 236 const char *full_path, 237 struct cifs_open_info_data *data, 238 struct super_block *sb, 239 const unsigned int xid); 240 extern int cifs_get_inode_info_unix(struct inode **pinode, 241 const unsigned char *search_path, 242 struct super_block *sb, unsigned int xid); 243 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 244 unsigned int xid, const char *full_path, __u32 dosattr); 245 extern int cifs_rename_pending_delete(const char *full_path, 246 struct dentry *dentry, 247 const unsigned int xid); 248 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid, 249 struct cifs_fattr *fattr, uint sidtype); 250 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 251 struct cifs_fattr *fattr, struct inode *inode, 252 bool get_mode_from_special_sid, 253 const char *path, const struct cifs_fid *pfid); 254 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 255 kuid_t uid, kgid_t gid); 256 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino, 257 const char *path, u32 *plen, u32 info); 258 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb, 259 const struct cifs_fid *pfid, u32 *plen, u32 info); 260 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 261 struct dentry *dentry, int type); 262 extern int cifs_set_acl(struct mnt_idmap *idmap, 263 struct dentry *dentry, struct posix_acl *acl, int type); 264 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino, 265 const char *path, int flag); 266 extern unsigned int setup_authusers_ACE(struct smb_ace *pace); 267 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace, 268 bool posix, 269 __u64 nmode); 270 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace); 271 272 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 273 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 274 unsigned int to_read); 275 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 276 size_t to_read); 277 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 278 struct iov_iter *iter, 279 unsigned int to_read); 280 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 281 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 282 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 283 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 284 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 285 extern int cifs_match_super(struct super_block *, void *); 286 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 287 extern void cifs_umount(struct cifs_sb_info *); 288 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 289 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 290 291 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 292 __u64 length, __u8 type, __u16 flags, 293 struct cifsLockInfo **conf_lock, 294 int rw_check); 295 extern void cifs_add_pending_open(struct cifs_fid *fid, 296 struct tcon_link *tlink, 297 struct cifs_pending_open *open); 298 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 299 struct tcon_link *tlink, 300 struct cifs_pending_open *open); 301 extern void cifs_del_pending_open(struct cifs_pending_open *open); 302 303 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 304 struct cifs_deferred_close **dclose); 305 306 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 307 struct cifs_deferred_close *dclose); 308 309 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 310 311 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 312 313 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 314 315 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 316 const char *path); 317 318 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode, 319 const char *path); 320 321 extern struct TCP_Server_Info * 322 cifs_get_tcp_session(struct smb3_fs_context *ctx, 323 struct TCP_Server_Info *primary_server); 324 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 325 int from_reconnect); 326 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 327 328 extern void cifs_release_automount_timer(void); 329 330 void cifs_proc_init(void); 331 void cifs_proc_clean(void); 332 333 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 334 extern void cifs_free_llist(struct list_head *llist); 335 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 336 337 int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon); 338 339 extern int cifs_negotiate_protocol(const unsigned int xid, 340 struct cifs_ses *ses, 341 struct TCP_Server_Info *server); 342 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 343 struct TCP_Server_Info *server, 344 struct nls_table *nls_info); 345 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 346 extern int CIFSSMBNegotiate(const unsigned int xid, 347 struct cifs_ses *ses, 348 struct TCP_Server_Info *server); 349 350 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 351 const char *tree, struct cifs_tcon *tcon, 352 const struct nls_table *); 353 354 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 355 const char *searchName, struct cifs_sb_info *cifs_sb, 356 __u16 *searchHandle, __u16 search_flags, 357 struct cifs_search_info *psrch_inf, 358 bool msearch); 359 360 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 361 __u16 searchHandle, __u16 search_flags, 362 struct cifs_search_info *psrch_inf); 363 364 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 365 const __u16 search_handle); 366 367 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 368 u16 netfid, FILE_ALL_INFO *pFindData); 369 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 370 const char *search_Name, FILE_ALL_INFO *data, 371 int legacy /* whether to use old info level */, 372 const struct nls_table *nls_codepage, int remap); 373 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 374 const char *search_name, FILE_ALL_INFO *data, 375 const struct nls_table *nls_codepage, int remap); 376 377 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 378 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 379 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 380 struct cifs_tcon *tcon, 381 const unsigned char *searchName, 382 FILE_UNIX_BASIC_INFO *pFindData, 383 const struct nls_table *nls_codepage, int remap); 384 385 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 386 const char *search_name, 387 struct dfs_info3_param **target_nodes, 388 unsigned int *num_of_nodes, 389 const struct nls_table *nls_codepage, int remap); 390 391 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 392 unsigned int *num_of_nodes, 393 struct dfs_info3_param **target_nodes, 394 const struct nls_table *nls_codepage, int remap, 395 const char *searchName, bool is_unicode); 396 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 397 struct cifs_sb_info *cifs_sb, 398 struct smb3_fs_context *ctx); 399 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 400 struct kstatfs *FSData); 401 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 402 struct kstatfs *FSData); 403 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 404 __u64 cap); 405 406 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 407 struct cifs_tcon *tcon); 408 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 409 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 410 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 411 struct kstatfs *FSData); 412 413 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon, 414 const char *fileName, __le32 attributes, __le64 write_time, 415 const struct nls_table *nls_codepage, 416 struct cifs_sb_info *cifs_sb); 417 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 418 const char *fileName, const FILE_BASIC_INFO *data, 419 const struct nls_table *nls_codepage, 420 struct cifs_sb_info *cifs_sb); 421 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 422 const FILE_BASIC_INFO *data, __u16 fid, 423 __u32 pid_of_opener); 424 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 425 struct cifs_tcon *tcon, 426 bool delete_file, __u16 fid, 427 __u32 pid_of_opener); 428 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 429 const char *file_name, __u64 size, 430 struct cifs_sb_info *cifs_sb, bool set_allocation, 431 struct dentry *dentry); 432 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 433 struct cifsFileInfo *cfile, __u64 size, 434 bool set_allocation); 435 436 struct cifs_unix_set_info_args { 437 __u64 ctime; 438 __u64 atime; 439 __u64 mtime; 440 __u64 mode; 441 kuid_t uid; 442 kgid_t gid; 443 dev_t device; 444 }; 445 446 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 447 struct cifs_tcon *tcon, 448 const struct cifs_unix_set_info_args *args, 449 u16 fid, u32 pid_of_opener); 450 451 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 452 struct cifs_tcon *tcon, const char *file_name, 453 const struct cifs_unix_set_info_args *args, 454 const struct nls_table *nls_codepage, 455 int remap); 456 457 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 458 umode_t mode, struct cifs_tcon *tcon, 459 const char *name, struct cifs_sb_info *cifs_sb); 460 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 461 const char *name, struct cifs_sb_info *cifs_sb); 462 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 463 const char *name, __u16 type, 464 const struct nls_table *nls_codepage, 465 int remap_special_chars); 466 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 467 const char *name, struct cifs_sb_info *cifs_sb, 468 struct dentry *dentry); 469 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 470 struct dentry *source_dentry, 471 const char *from_name, const char *to_name, 472 struct cifs_sb_info *cifs_sb); 473 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 474 int netfid, const char *target_name, 475 const struct nls_table *nls_codepage, 476 int remap_special_chars); 477 int CIFSCreateHardLink(const unsigned int xid, 478 struct cifs_tcon *tcon, 479 struct dentry *source_dentry, 480 const char *from_name, const char *to_name, 481 struct cifs_sb_info *cifs_sb); 482 extern int CIFSUnixCreateHardLink(const unsigned int xid, 483 struct cifs_tcon *tcon, 484 const char *fromName, const char *toName, 485 const struct nls_table *nls_codepage, 486 int remap_special_chars); 487 extern int CIFSUnixCreateSymLink(const unsigned int xid, 488 struct cifs_tcon *tcon, 489 const char *fromName, const char *toName, 490 const struct nls_table *nls_codepage, int remap); 491 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 492 struct cifs_tcon *tcon, 493 const unsigned char *searchName, char **syminfo, 494 const struct nls_table *nls_codepage, int remap); 495 extern int cifs_query_reparse_point(const unsigned int xid, 496 struct cifs_tcon *tcon, 497 struct cifs_sb_info *cifs_sb, 498 const char *full_path, 499 u32 *tag, struct kvec *rsp, 500 int *rsp_buftype); 501 extern struct inode *cifs_create_reparse_inode(struct cifs_open_info_data *data, 502 struct super_block *sb, 503 const unsigned int xid, 504 struct cifs_tcon *tcon, 505 const char *full_path, 506 bool directory, 507 struct kvec *reparse_iov, 508 struct kvec *xattr_iov); 509 extern int CIFSSMB_set_compression(const unsigned int xid, 510 struct cifs_tcon *tcon, __u16 fid); 511 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 512 int *oplock, FILE_ALL_INFO *buf); 513 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 514 const char *fileName, const int disposition, 515 const int access_flags, const int omode, 516 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 517 const struct nls_table *nls_codepage, int remap); 518 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 519 u32 posix_flags, __u64 mode, __u16 *netfid, 520 FILE_UNIX_BASIC_INFO *pRetData, 521 __u32 *pOplock, const char *name, 522 const struct nls_table *nls_codepage, int remap); 523 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 524 const int smb_file_id); 525 526 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 527 const int smb_file_id); 528 529 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 530 unsigned int *nbytes, char **buf, 531 int *return_buf_type); 532 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 533 unsigned int *nbytes, const char *buf); 534 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 535 unsigned int *nbytes, struct kvec *iov, const int nvec); 536 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 537 const char *search_name, __u64 *inode_number, 538 const struct nls_table *nls_codepage, 539 int remap); 540 541 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 542 const __u16 netfid, const __u8 lock_type, 543 const __u32 num_unlock, const __u32 num_lock, 544 LOCKING_ANDX_RANGE *buf); 545 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 546 const __u16 netfid, const __u32 netpid, const __u64 len, 547 const __u64 offset, const __u32 numUnlock, 548 const __u32 numLock, const __u8 lockType, 549 const bool waitFlag, const __u8 oplock_level); 550 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 551 const __u16 smb_file_id, const __u32 netpid, 552 const loff_t start_offset, const __u64 len, 553 struct file_lock *, const __u16 lock_type, 554 const bool waitFlag); 555 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 556 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 557 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 558 559 extern struct cifs_ses *sesInfoAlloc(void); 560 extern void sesInfoFree(struct cifs_ses *); 561 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled, 562 enum smb3_tcon_ref_trace trace); 563 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 564 565 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 566 __u32 *pexpected_response_sequence_number); 567 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 568 __u32 *); 569 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 570 extern int cifs_verify_signature(struct smb_rqst *rqst, 571 struct TCP_Server_Info *server, 572 __u32 expected_sequence_number); 573 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 574 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 575 extern int calc_seckey(struct cifs_ses *); 576 extern int generate_smb30signingkey(struct cifs_ses *ses, 577 struct TCP_Server_Info *server); 578 extern int generate_smb311signingkey(struct cifs_ses *ses, 579 struct TCP_Server_Info *server); 580 581 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 582 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 583 const unsigned char *searchName, 584 const unsigned char *ea_name, char *EAData, 585 size_t bufsize, struct cifs_sb_info *cifs_sb); 586 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 587 const char *fileName, const char *ea_name, 588 const void *ea_value, const __u16 ea_value_len, 589 const struct nls_table *nls_codepage, 590 struct cifs_sb_info *cifs_sb); 591 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 592 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info); 593 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 594 struct smb_ntsd *pntsd, __u32 len, int aclflag); 595 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 596 const unsigned char *searchName, 597 struct posix_acl **acl, const int acl_type, 598 const struct nls_table *nls_codepage, int remap); 599 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 600 const unsigned char *fileName, 601 const struct posix_acl *acl, const int acl_type, 602 const struct nls_table *nls_codepage, int remap); 603 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 604 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 605 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 606 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 607 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 608 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 609 struct cifs_sb_info *cifs_sb, 610 struct cifs_fattr *fattr, 611 const unsigned char *path); 612 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 613 const struct nls_table *codepage); 614 615 extern struct TCP_Server_Info * 616 cifs_find_tcp_session(struct smb3_fs_context *ctx); 617 618 void __cifs_put_smb_ses(struct cifs_ses *ses); 619 620 extern struct cifs_ses * 621 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 622 623 int cifs_async_readv(struct cifs_io_subrequest *rdata); 624 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 625 626 void cifs_async_writev(struct cifs_io_subrequest *wdata); 627 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 628 struct cifs_sb_info *cifs_sb, 629 const unsigned char *path, char *pbuf, 630 unsigned int *pbytes_read); 631 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 632 struct cifs_sb_info *cifs_sb, 633 const unsigned char *path, char *pbuf, 634 unsigned int *pbytes_written); 635 int __cifs_calc_signature(struct smb_rqst *rqst, 636 struct TCP_Server_Info *server, char *signature, 637 struct shash_desc *shash); 638 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 639 enum securityEnum); 640 641 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 642 void cifs_free_hash(struct shash_desc **sdesc); 643 644 int cifs_try_adding_channels(struct cifs_ses *ses); 645 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 646 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 647 648 int 649 cifs_ses_get_chan_index(struct cifs_ses *ses, 650 struct TCP_Server_Info *server); 651 void 652 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 653 struct TCP_Server_Info *server); 654 void 655 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 656 struct TCP_Server_Info *server); 657 void 658 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 659 struct TCP_Server_Info *server); 660 void 661 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 662 struct TCP_Server_Info *server); 663 bool 664 cifs_chan_needs_reconnect(struct cifs_ses *ses, 665 struct TCP_Server_Info *server); 666 bool 667 cifs_chan_is_iface_active(struct cifs_ses *ses, 668 struct TCP_Server_Info *server); 669 void 670 cifs_disable_secondary_channels(struct cifs_ses *ses); 671 void 672 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 673 int 674 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 675 676 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 677 int copy_path_name(char *dst, const char *src); 678 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 679 int resp_buftype, 680 struct cifs_search_info *srch_inf); 681 682 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 683 void cifs_put_tcp_super(struct super_block *sb); 684 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 685 char *extract_hostname(const char *unc); 686 char *extract_sharename(const char *unc); 687 int parse_reparse_point(struct reparse_data_buffer *buf, 688 u32 plen, struct cifs_sb_info *cifs_sb, 689 const char *full_path, 690 struct cifs_open_info_data *data); 691 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode, 692 struct dentry *dentry, struct cifs_tcon *tcon, 693 const char *full_path, umode_t mode, dev_t dev, 694 const char *symname); 695 int cifs_sfu_make_node(unsigned int xid, struct inode *inode, 696 struct dentry *dentry, struct cifs_tcon *tcon, 697 const char *full_path, umode_t mode, dev_t dev); 698 umode_t wire_mode_to_posix(u32 wire, bool is_dir); 699 700 #ifdef CONFIG_CIFS_DFS_UPCALL 701 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 702 const char *old_path, 703 const struct nls_table *nls_codepage, 704 struct dfs_info3_param *referral, int remap) 705 { 706 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 707 referral, NULL); 708 } 709 710 int match_target_ip(struct TCP_Server_Info *server, 711 const char *host, size_t hostlen, 712 bool *result); 713 int cifs_inval_name_dfs_link_error(const unsigned int xid, 714 struct cifs_tcon *tcon, 715 struct cifs_sb_info *cifs_sb, 716 const char *full_path, 717 bool *islink); 718 #else 719 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 720 struct cifs_tcon *tcon, 721 struct cifs_sb_info *cifs_sb, 722 const char *full_path, 723 bool *islink) 724 { 725 *islink = false; 726 return 0; 727 } 728 #endif 729 730 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 731 { 732 if (cifs_sb && (backup_cred(cifs_sb))) 733 return options | CREATE_OPEN_BACKUP_INTENT; 734 else 735 return options; 736 } 737 738 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 739 740 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 741 { 742 __cifs_put_smb_ses(ses); 743 } 744 745 /* Get an active reference of @ses and its children. 746 * 747 * NOTE: make sure to call this function when incrementing reference count of 748 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 749 * will also get its reference count incremented. 750 * 751 * cifs_put_smb_ses() will put all references, so call it when you're done. 752 */ 753 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 754 { 755 lockdep_assert_held(&cifs_tcp_ses_lock); 756 ses->ses_count++; 757 } 758 759 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 760 { 761 if (strlen(s1) != strlen(s2)) 762 return false; 763 for (; *s1; s1++, s2++) { 764 if (*s1 == '/' || *s1 == '\\') { 765 if (*s2 != '/' && *s2 != '\\') 766 return false; 767 } else if (tolower(*s1) != tolower(*s2)) 768 return false; 769 } 770 return true; 771 } 772 773 static inline void release_mid(struct mid_q_entry *mid) 774 { 775 kref_put(&mid->refcount, __release_mid); 776 } 777 778 static inline void cifs_free_open_info(struct cifs_open_info_data *data) 779 { 780 kfree(data->symlink_target); 781 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); 782 memset(data, 0, sizeof(*data)); 783 } 784 785 #endif /* _CIFSPROTO_H */ 786