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