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 "cifsglob.h" 13 #include "trace.h" 14 #ifdef CONFIG_CIFS_DFS_UPCALL 15 #include "dfs_cache.h" 16 #endif 17 18 struct statfs; 19 struct smb_rqst; 20 struct smb3_fs_context; 21 22 /* 23 ***************************************************************** 24 * All Prototypes 25 ***************************************************************** 26 */ 27 28 extern struct smb_hdr *cifs_buf_get(void); 29 extern void cifs_buf_release(void *); 30 extern struct smb_hdr *cifs_small_buf_get(void); 31 extern void cifs_small_buf_release(void *); 32 extern void free_rsp_buf(int, void *); 33 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *, 34 unsigned int /* length */); 35 extern int smb_send_kvec(struct TCP_Server_Info *server, 36 struct msghdr *msg, 37 size_t *sent); 38 extern unsigned int _get_xid(void); 39 extern void _free_xid(unsigned int); 40 #define get_xid() \ 41 ({ \ 42 unsigned int __xid = _get_xid(); \ 43 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \ 44 __func__, __xid, \ 45 from_kuid(&init_user_ns, current_fsuid())); \ 46 trace_smb3_enter(__xid, __func__); \ 47 __xid; \ 48 }) 49 50 #define free_xid(curr_xid) \ 51 do { \ 52 _free_xid(curr_xid); \ 53 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \ 54 __func__, curr_xid, (int)rc); \ 55 if (rc) \ 56 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \ 57 else \ 58 trace_smb3_exit_done(curr_xid, __func__); \ 59 } while (0) 60 extern int init_cifs_idmap(void); 61 extern void exit_cifs_idmap(void); 62 extern int init_cifs_spnego(void); 63 extern void exit_cifs_spnego(void); 64 extern const char *build_path_from_dentry(struct dentry *, void *); 65 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, 66 const char *tree, int tree_len, 67 bool prefix); 68 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry, 69 void *page, bool prefix); 70 static inline void *alloc_dentry_path(void) 71 { 72 return __getname(); 73 } 74 75 static inline void free_dentry_path(void *page) 76 { 77 if (page) 78 __putname(page); 79 } 80 81 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx, 82 struct cifs_sb_info *cifs_sb, 83 struct cifs_tcon *tcon, 84 int add_treename); 85 extern char *build_wildcard_path_from_dentry(struct dentry *direntry); 86 char *cifs_build_devname(char *nodename, const char *prepath); 87 extern void delete_mid(struct mid_q_entry *mid); 88 void __release_mid(struct kref *refcount); 89 extern void cifs_wake_up_task(struct mid_q_entry *mid); 90 extern int cifs_handle_standard(struct TCP_Server_Info *server, 91 struct mid_q_entry *mid); 92 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx, 93 char dirsep); 94 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx); 95 extern int smb3_parse_opt(const char *options, const char *key, char **val); 96 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs); 97 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs); 98 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); 99 extern int cifs_call_async(struct TCP_Server_Info *server, 100 struct smb_rqst *rqst, 101 mid_receive_t *receive, mid_callback_t *callback, 102 mid_handle_t *handle, void *cbdata, const int flags, 103 const struct cifs_credits *exist_credits); 104 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses); 105 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, 106 struct TCP_Server_Info *server, 107 struct smb_rqst *rqst, int *resp_buf_type, 108 const int flags, struct kvec *resp_iov); 109 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses, 110 struct TCP_Server_Info *server, 111 const int flags, const int num_rqst, 112 struct smb_rqst *rqst, int *resp_buf_type, 113 struct kvec *resp_iov); 114 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, 115 struct smb_hdr * /* input */ , 116 struct smb_hdr * /* out */ , 117 int * /* bytes returned */ , const int); 118 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, 119 char *in_buf, int flags); 120 int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server); 121 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *, 122 struct TCP_Server_Info *, 123 struct smb_rqst *); 124 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *, 125 struct smb_rqst *); 126 int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, 127 struct smb_rqst *rqst); 128 extern int cifs_check_receive(struct mid_q_entry *mid, 129 struct TCP_Server_Info *server, bool log_error); 130 int wait_for_free_request(struct TCP_Server_Info *server, const int flags, 131 unsigned int *instance); 132 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, 133 size_t size, size_t *num, 134 struct cifs_credits *credits); 135 136 static inline int 137 send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, 138 struct mid_q_entry *mid) 139 { 140 return server->ops->send_cancel ? 141 server->ops->send_cancel(server, rqst, mid) : 0; 142 } 143 144 int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ); 145 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, 146 struct kvec *, int /* nvec to send */, 147 int * /* type of buf returned */, const int flags, 148 struct kvec * /* resp vec */); 149 extern int SendReceiveBlockingLock(const unsigned int xid, 150 struct cifs_tcon *ptcon, 151 struct smb_hdr *in_buf, 152 struct smb_hdr *out_buf, 153 int *bytes_returned); 154 155 void smb2_query_server_interfaces(struct work_struct *work); 156 void 157 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, 158 bool all_channels); 159 void 160 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, 161 bool mark_smb_session); 162 extern int cifs_reconnect(struct TCP_Server_Info *server, 163 bool mark_smb_session); 164 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr); 165 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *); 166 extern bool backup_cred(struct cifs_sb_info *); 167 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof, 168 bool from_readdir); 169 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 170 unsigned int bytes_written); 171 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result); 172 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 173 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 174 int flags, 175 struct cifsFileInfo **ret_file); 176 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 177 int flags, 178 struct cifsFileInfo **ret_file); 179 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 180 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 181 struct cifsFileInfo **ret_file); 182 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode, 183 struct file *file); 184 extern unsigned int smbCalcSize(void *buf); 185 extern int decode_negTokenInit(unsigned char *security_blob, int length, 186 struct TCP_Server_Info *server); 187 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 188 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 189 extern int map_smb_to_linux_error(char *buf, bool logErr); 190 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 191 extern void header_assemble(struct smb_hdr *, char /* command */ , 192 const struct cifs_tcon *, int /* length of 193 fixed section (word count) in two byte units */); 194 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 195 struct cifs_ses *ses, 196 void **request_buf); 197 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 198 enum securityEnum requested); 199 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 200 struct TCP_Server_Info *server, 201 const struct nls_table *nls_cp); 202 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 203 extern u64 cifs_UnixTimeToNT(struct timespec64); 204 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 205 int offset); 206 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 207 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 208 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 209 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 210 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 211 struct file_lock *flock, const unsigned int xid); 212 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 213 214 extern void cifs_down_write(struct rw_semaphore *sem); 215 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 216 struct tcon_link *tlink, __u32 oplock, 217 const char *symlink_target); 218 extern int cifs_posix_open(const char *full_path, struct inode **inode, 219 struct super_block *sb, int mode, 220 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 221 unsigned int xid); 222 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 223 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 224 FILE_UNIX_BASIC_INFO *info, 225 struct cifs_sb_info *cifs_sb); 226 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 227 struct cifs_sb_info *); 228 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr, 229 bool from_readdir); 230 extern struct inode *cifs_iget(struct super_block *sb, 231 struct cifs_fattr *fattr); 232 233 int cifs_get_inode_info(struct inode **inode, const char *full_path, 234 struct cifs_open_info_data *data, struct super_block *sb, int xid, 235 const struct cifs_fid *fid); 236 extern int smb311_posix_get_inode_info(struct inode **inode, 237 const char *full_path, 238 struct cifs_open_info_data *data, 239 struct super_block *sb, 240 const unsigned int xid); 241 extern int cifs_get_inode_info_unix(struct inode **pinode, 242 const unsigned char *search_path, 243 struct super_block *sb, unsigned int xid); 244 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 245 unsigned int xid, const char *full_path, __u32 dosattr); 246 extern int cifs_rename_pending_delete(const char *full_path, 247 struct dentry *dentry, 248 const unsigned int xid); 249 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid, 250 struct cifs_fattr *fattr, uint sidtype); 251 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 252 struct cifs_fattr *fattr, struct inode *inode, 253 bool get_mode_from_special_sid, 254 const char *path, const struct cifs_fid *pfid); 255 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 256 kuid_t uid, kgid_t gid); 257 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino, 258 const char *path, u32 *plen, u32 info); 259 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb, 260 const struct cifs_fid *pfid, u32 *plen, u32 info); 261 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 262 struct dentry *dentry, int type); 263 extern int cifs_set_acl(struct mnt_idmap *idmap, 264 struct dentry *dentry, struct posix_acl *acl, int type); 265 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino, 266 const char *path, int flag); 267 extern unsigned int setup_authusers_ACE(struct smb_ace *pace); 268 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace, 269 bool posix, 270 __u64 nmode); 271 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace); 272 273 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 274 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 275 unsigned int to_read); 276 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 277 size_t to_read); 278 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 279 struct iov_iter *iter, 280 unsigned int to_read); 281 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 282 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 283 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 284 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 285 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 286 extern int cifs_match_super(struct super_block *, void *); 287 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 288 extern void cifs_umount(struct cifs_sb_info *); 289 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 290 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 291 292 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 293 __u64 length, __u8 type, __u16 flags, 294 struct cifsLockInfo **conf_lock, 295 int rw_check); 296 extern void cifs_add_pending_open(struct cifs_fid *fid, 297 struct tcon_link *tlink, 298 struct cifs_pending_open *open); 299 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 300 struct tcon_link *tlink, 301 struct cifs_pending_open *open); 302 extern void cifs_del_pending_open(struct cifs_pending_open *open); 303 304 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 305 struct cifs_deferred_close **dclose); 306 307 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 308 struct cifs_deferred_close *dclose); 309 310 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 311 312 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 313 314 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 315 316 void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 317 struct dentry *dentry); 318 319 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode, 320 const char *path); 321 322 extern struct TCP_Server_Info * 323 cifs_get_tcp_session(struct smb3_fs_context *ctx, 324 struct TCP_Server_Info *primary_server); 325 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 326 int from_reconnect); 327 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 328 329 extern void cifs_release_automount_timer(void); 330 331 void cifs_proc_init(void); 332 void cifs_proc_clean(void); 333 334 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 335 extern void cifs_free_llist(struct list_head *llist); 336 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 337 338 int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon); 339 340 extern int cifs_negotiate_protocol(const unsigned int xid, 341 struct cifs_ses *ses, 342 struct TCP_Server_Info *server); 343 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 344 struct TCP_Server_Info *server, 345 struct nls_table *nls_info); 346 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 347 extern int CIFSSMBNegotiate(const unsigned int xid, 348 struct cifs_ses *ses, 349 struct TCP_Server_Info *server); 350 351 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 352 const char *tree, struct cifs_tcon *tcon, 353 const struct nls_table *); 354 355 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 356 const char *searchName, struct cifs_sb_info *cifs_sb, 357 __u16 *searchHandle, __u16 search_flags, 358 struct cifs_search_info *psrch_inf, 359 bool msearch); 360 361 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 362 __u16 searchHandle, __u16 search_flags, 363 struct cifs_search_info *psrch_inf); 364 365 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 366 const __u16 search_handle); 367 368 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 369 u16 netfid, FILE_ALL_INFO *pFindData); 370 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 371 const char *search_Name, FILE_ALL_INFO *data, 372 int legacy /* whether to use old info level */, 373 const struct nls_table *nls_codepage, int remap); 374 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 375 const char *search_name, FILE_ALL_INFO *data, 376 const struct nls_table *nls_codepage, int remap); 377 378 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 379 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 380 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 381 struct cifs_tcon *tcon, 382 const unsigned char *searchName, 383 FILE_UNIX_BASIC_INFO *pFindData, 384 const struct nls_table *nls_codepage, int remap); 385 386 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 387 const char *search_name, 388 struct dfs_info3_param **target_nodes, 389 unsigned int *num_of_nodes, 390 const struct nls_table *nls_codepage, int remap); 391 392 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 393 unsigned int *num_of_nodes, 394 struct dfs_info3_param **target_nodes, 395 const struct nls_table *nls_codepage, int remap, 396 const char *searchName, bool is_unicode); 397 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 398 struct cifs_sb_info *cifs_sb, 399 struct smb3_fs_context *ctx); 400 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 401 struct kstatfs *FSData); 402 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 403 struct kstatfs *FSData); 404 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 405 __u64 cap); 406 407 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 408 struct cifs_tcon *tcon); 409 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 410 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 411 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 412 struct kstatfs *FSData); 413 414 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon, 415 const char *fileName, __le32 attributes, __le64 write_time, 416 const struct nls_table *nls_codepage, 417 struct cifs_sb_info *cifs_sb); 418 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 419 const char *fileName, const FILE_BASIC_INFO *data, 420 const struct nls_table *nls_codepage, 421 struct cifs_sb_info *cifs_sb); 422 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 423 const FILE_BASIC_INFO *data, __u16 fid, 424 __u32 pid_of_opener); 425 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 426 struct cifs_tcon *tcon, 427 bool delete_file, __u16 fid, 428 __u32 pid_of_opener); 429 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 430 const char *file_name, __u64 size, 431 struct cifs_sb_info *cifs_sb, bool set_allocation, 432 struct dentry *dentry); 433 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 434 struct cifsFileInfo *cfile, __u64 size, 435 bool set_allocation); 436 437 struct cifs_unix_set_info_args { 438 __u64 ctime; 439 __u64 atime; 440 __u64 mtime; 441 __u64 mode; 442 kuid_t uid; 443 kgid_t gid; 444 dev_t device; 445 }; 446 447 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 448 struct cifs_tcon *tcon, 449 const struct cifs_unix_set_info_args *args, 450 u16 fid, u32 pid_of_opener); 451 452 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 453 struct cifs_tcon *tcon, const char *file_name, 454 const struct cifs_unix_set_info_args *args, 455 const struct nls_table *nls_codepage, 456 int remap); 457 458 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 459 umode_t mode, struct cifs_tcon *tcon, 460 const char *name, struct cifs_sb_info *cifs_sb); 461 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 462 const char *name, struct cifs_sb_info *cifs_sb); 463 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 464 const char *name, __u16 type, 465 const struct nls_table *nls_codepage, 466 int remap_special_chars); 467 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 468 const char *name, struct cifs_sb_info *cifs_sb, 469 struct dentry *dentry); 470 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 471 struct dentry *source_dentry, 472 const char *from_name, const char *to_name, 473 struct cifs_sb_info *cifs_sb); 474 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 475 int netfid, const char *target_name, 476 const struct nls_table *nls_codepage, 477 int remap_special_chars); 478 int CIFSCreateHardLink(const unsigned int xid, 479 struct cifs_tcon *tcon, 480 struct dentry *source_dentry, 481 const char *from_name, const char *to_name, 482 struct cifs_sb_info *cifs_sb); 483 extern int CIFSUnixCreateHardLink(const unsigned int xid, 484 struct cifs_tcon *tcon, 485 const char *fromName, const char *toName, 486 const struct nls_table *nls_codepage, 487 int remap_special_chars); 488 extern int CIFSUnixCreateSymLink(const unsigned int xid, 489 struct cifs_tcon *tcon, 490 const char *fromName, const char *toName, 491 const struct nls_table *nls_codepage, int remap); 492 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 493 struct cifs_tcon *tcon, 494 const unsigned char *searchName, char **syminfo, 495 const struct nls_table *nls_codepage, int remap); 496 extern int cifs_query_reparse_point(const unsigned int xid, 497 struct cifs_tcon *tcon, 498 struct cifs_sb_info *cifs_sb, 499 const char *full_path, 500 u32 *tag, struct kvec *rsp, 501 int *rsp_buftype); 502 extern struct inode *cifs_create_reparse_inode(struct cifs_open_info_data *data, 503 struct super_block *sb, 504 const unsigned int xid, 505 struct cifs_tcon *tcon, 506 const char *full_path, 507 bool directory, 508 struct kvec *reparse_iov, 509 struct kvec *xattr_iov); 510 extern int CIFSSMB_set_compression(const unsigned int xid, 511 struct cifs_tcon *tcon, __u16 fid); 512 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 513 int *oplock, FILE_ALL_INFO *buf); 514 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 515 const char *fileName, const int disposition, 516 const int access_flags, const int omode, 517 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 518 const struct nls_table *nls_codepage, int remap); 519 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 520 u32 posix_flags, __u64 mode, __u16 *netfid, 521 FILE_UNIX_BASIC_INFO *pRetData, 522 __u32 *pOplock, const char *name, 523 const struct nls_table *nls_codepage, int remap); 524 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 525 const int smb_file_id); 526 527 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 528 const int smb_file_id); 529 530 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 531 unsigned int *nbytes, char **buf, 532 int *return_buf_type); 533 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 534 unsigned int *nbytes, const char *buf); 535 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 536 unsigned int *nbytes, struct kvec *iov, const int nvec); 537 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 538 const char *search_name, __u64 *inode_number, 539 const struct nls_table *nls_codepage, 540 int remap); 541 542 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 543 const __u16 netfid, const __u8 lock_type, 544 const __u32 num_unlock, const __u32 num_lock, 545 LOCKING_ANDX_RANGE *buf); 546 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 547 const __u16 netfid, const __u32 netpid, const __u64 len, 548 const __u64 offset, const __u32 numUnlock, 549 const __u32 numLock, const __u8 lockType, 550 const bool waitFlag, const __u8 oplock_level); 551 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 552 const __u16 smb_file_id, const __u32 netpid, 553 const loff_t start_offset, const __u64 len, 554 struct file_lock *, const __u16 lock_type, 555 const bool waitFlag); 556 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 557 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 558 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 559 560 extern struct cifs_ses *sesInfoAlloc(void); 561 extern void sesInfoFree(struct cifs_ses *); 562 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled, 563 enum smb3_tcon_ref_trace trace); 564 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); 565 566 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 567 __u32 *pexpected_response_sequence_number); 568 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 569 __u32 *); 570 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 571 extern int cifs_verify_signature(struct smb_rqst *rqst, 572 struct TCP_Server_Info *server, 573 __u32 expected_sequence_number); 574 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 575 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 576 extern int calc_seckey(struct cifs_ses *); 577 extern int generate_smb30signingkey(struct cifs_ses *ses, 578 struct TCP_Server_Info *server); 579 extern int generate_smb311signingkey(struct cifs_ses *ses, 580 struct TCP_Server_Info *server); 581 582 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 583 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 584 const unsigned char *searchName, 585 const unsigned char *ea_name, char *EAData, 586 size_t bufsize, struct cifs_sb_info *cifs_sb); 587 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 588 const char *fileName, const char *ea_name, 589 const void *ea_value, const __u16 ea_value_len, 590 const struct nls_table *nls_codepage, 591 struct cifs_sb_info *cifs_sb); 592 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 593 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info); 594 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 595 struct smb_ntsd *pntsd, __u32 len, int aclflag); 596 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 597 const unsigned char *searchName, 598 struct posix_acl **acl, const int acl_type, 599 const struct nls_table *nls_codepage, int remap); 600 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 601 const unsigned char *fileName, 602 const struct posix_acl *acl, const int acl_type, 603 const struct nls_table *nls_codepage, int remap); 604 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 605 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 606 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 607 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 608 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 609 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 610 struct cifs_sb_info *cifs_sb, 611 struct cifs_fattr *fattr, 612 const unsigned char *path); 613 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 614 const struct nls_table *codepage); 615 616 extern struct TCP_Server_Info * 617 cifs_find_tcp_session(struct smb3_fs_context *ctx); 618 619 struct cifs_tcon *cifs_setup_ipc(struct cifs_ses *ses, bool seal); 620 621 void __cifs_put_smb_ses(struct cifs_ses *ses); 622 623 extern struct cifs_ses * 624 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 625 626 int cifs_async_readv(struct cifs_io_subrequest *rdata); 627 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 628 629 void cifs_async_writev(struct cifs_io_subrequest *wdata); 630 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 631 struct cifs_sb_info *cifs_sb, 632 const unsigned char *path, char *pbuf, 633 unsigned int *pbytes_read); 634 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 635 struct cifs_sb_info *cifs_sb, 636 const unsigned char *path, char *pbuf, 637 unsigned int *pbytes_written); 638 struct cifs_calc_sig_ctx { 639 struct md5_ctx *md5; 640 struct hmac_sha256_ctx *hmac; 641 struct shash_desc *shash; 642 }; 643 int __cifs_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, 644 char *signature, struct cifs_calc_sig_ctx *ctx); 645 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, 646 enum securityEnum); 647 648 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 649 void cifs_free_hash(struct shash_desc **sdesc); 650 651 int cifs_try_adding_channels(struct cifs_ses *ses); 652 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 653 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 654 655 int 656 cifs_ses_get_chan_index(struct cifs_ses *ses, 657 struct TCP_Server_Info *server); 658 void 659 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 660 struct TCP_Server_Info *server); 661 void 662 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 663 struct TCP_Server_Info *server); 664 void 665 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 666 struct TCP_Server_Info *server); 667 void 668 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 669 struct TCP_Server_Info *server); 670 bool 671 cifs_chan_needs_reconnect(struct cifs_ses *ses, 672 struct TCP_Server_Info *server); 673 bool 674 cifs_chan_is_iface_active(struct cifs_ses *ses, 675 struct TCP_Server_Info *server); 676 void 677 cifs_disable_secondary_channels(struct cifs_ses *ses); 678 void 679 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 680 int 681 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 682 683 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 684 int copy_path_name(char *dst, const char *src); 685 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 686 int resp_buftype, 687 struct cifs_search_info *srch_inf); 688 689 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 690 void cifs_put_tcp_super(struct super_block *sb); 691 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 692 char *extract_hostname(const char *unc); 693 char *extract_sharename(const char *unc); 694 int parse_reparse_point(struct reparse_data_buffer *buf, 695 u32 plen, struct cifs_sb_info *cifs_sb, 696 const char *full_path, 697 struct cifs_open_info_data *data); 698 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode, 699 struct dentry *dentry, struct cifs_tcon *tcon, 700 const char *full_path, umode_t mode, dev_t dev, 701 const char *symname); 702 int cifs_sfu_make_node(unsigned int xid, struct inode *inode, 703 struct dentry *dentry, struct cifs_tcon *tcon, 704 const char *full_path, umode_t mode, dev_t dev); 705 umode_t wire_mode_to_posix(u32 wire, bool is_dir); 706 707 #ifdef CONFIG_CIFS_DFS_UPCALL 708 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 709 const char *old_path, 710 const struct nls_table *nls_codepage, 711 struct dfs_info3_param *referral, int remap) 712 { 713 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 714 referral, NULL); 715 } 716 717 int match_target_ip(struct TCP_Server_Info *server, 718 const char *host, size_t hostlen, 719 bool *result); 720 int cifs_inval_name_dfs_link_error(const unsigned int xid, 721 struct cifs_tcon *tcon, 722 struct cifs_sb_info *cifs_sb, 723 const char *full_path, 724 bool *islink); 725 #else 726 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 727 struct cifs_tcon *tcon, 728 struct cifs_sb_info *cifs_sb, 729 const char *full_path, 730 bool *islink) 731 { 732 *islink = false; 733 return 0; 734 } 735 #endif 736 737 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 738 { 739 if (cifs_sb && (backup_cred(cifs_sb))) 740 return options | CREATE_OPEN_BACKUP_INTENT; 741 else 742 return options; 743 } 744 745 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 746 747 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 748 { 749 __cifs_put_smb_ses(ses); 750 } 751 752 /* Get an active reference of @ses and its children. 753 * 754 * NOTE: make sure to call this function when incrementing reference count of 755 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) 756 * will also get its reference count incremented. 757 * 758 * cifs_put_smb_ses() will put all references, so call it when you're done. 759 */ 760 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) 761 { 762 lockdep_assert_held(&cifs_tcp_ses_lock); 763 ses->ses_count++; 764 } 765 766 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 767 { 768 if (strlen(s1) != strlen(s2)) 769 return false; 770 for (; *s1; s1++, s2++) { 771 if (*s1 == '/' || *s1 == '\\') { 772 if (*s2 != '/' && *s2 != '\\') 773 return false; 774 } else if (tolower(*s1) != tolower(*s2)) 775 return false; 776 } 777 return true; 778 } 779 780 static inline void release_mid(struct mid_q_entry *mid) 781 { 782 kref_put(&mid->refcount, __release_mid); 783 } 784 785 static inline void cifs_free_open_info(struct cifs_open_info_data *data) 786 { 787 kfree(data->symlink_target); 788 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); 789 memset(data, 0, sizeof(*data)); 790 } 791 792 #endif /* _CIFSPROTO_H */ 793