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