1 /* SPDX-License-Identifier: LGPL-2.1 */ 2 /* 3 * 4 * Copyright (c) International Business Machines Corp., 2002,2008 5 * Author(s): Steve French (sfrench@us.ibm.com) 6 * 7 */ 8 #ifndef _CIFSPROTO_H 9 #define _CIFSPROTO_H 10 #include <linux/nls.h> 11 #include <linux/ctype.h> 12 #include "trace.h" 13 #ifdef CONFIG_CIFS_DFS_UPCALL 14 #include "dfs_cache.h" 15 #endif 16 17 struct statfs; 18 struct smb_rqst; 19 struct smb3_fs_context; 20 21 /* 22 ***************************************************************** 23 * All Prototypes 24 ***************************************************************** 25 */ 26 27 extern struct smb_hdr *cifs_buf_get(void); 28 extern void cifs_buf_release(void *); 29 extern struct smb_hdr *cifs_small_buf_get(void); 30 extern void cifs_small_buf_release(void *); 31 extern void free_rsp_buf(int, void *); 32 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *, 33 unsigned int /* length */); 34 extern unsigned int _get_xid(void); 35 extern void _free_xid(unsigned int); 36 #define get_xid() \ 37 ({ \ 38 unsigned int __xid = _get_xid(); \ 39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \ 40 __func__, __xid, \ 41 from_kuid(&init_user_ns, current_fsuid())); \ 42 trace_smb3_enter(__xid, __func__); \ 43 __xid; \ 44 }) 45 46 #define free_xid(curr_xid) \ 47 do { \ 48 _free_xid(curr_xid); \ 49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \ 50 __func__, curr_xid, (int)rc); \ 51 if (rc) \ 52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \ 53 else \ 54 trace_smb3_exit_done(curr_xid, __func__); \ 55 } while (0) 56 extern int init_cifs_idmap(void); 57 extern void exit_cifs_idmap(void); 58 extern int init_cifs_spnego(void); 59 extern void exit_cifs_spnego(void); 60 extern const char *build_path_from_dentry(struct dentry *, void *); 61 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, 62 const char *tree, int tree_len, 63 bool prefix); 64 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry, 65 void *page, bool prefix); 66 static inline void *alloc_dentry_path(void) 67 { 68 return __getname(); 69 } 70 71 static inline void free_dentry_path(void *page) 72 { 73 if (page) 74 __putname(page); 75 } 76 77 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx, 78 struct cifs_sb_info *cifs_sb, 79 struct cifs_tcon *tcon, 80 int add_treename); 81 extern char *build_wildcard_path_from_dentry(struct dentry *direntry); 82 char *cifs_build_devname(char *nodename, const char *prepath); 83 extern void delete_mid(struct mid_q_entry *mid); 84 void __release_mid(struct kref *refcount); 85 extern void cifs_wake_up_task(struct mid_q_entry *mid); 86 extern int cifs_handle_standard(struct TCP_Server_Info *server, 87 struct mid_q_entry *mid); 88 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx, 89 char dirsep); 90 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx); 91 extern int smb3_parse_opt(const char *options, const char *key, char **val); 92 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs); 93 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs); 94 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); 95 extern int cifs_call_async(struct TCP_Server_Info *server, 96 struct smb_rqst *rqst, 97 mid_receive_t *receive, mid_callback_t *callback, 98 mid_handle_t *handle, void *cbdata, const int flags, 99 const struct cifs_credits *exist_credits); 100 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses); 101 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, 102 struct TCP_Server_Info *server, 103 struct smb_rqst *rqst, int *resp_buf_type, 104 const int flags, struct kvec *resp_iov); 105 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses, 106 struct TCP_Server_Info *server, 107 const int flags, const int num_rqst, 108 struct smb_rqst *rqst, int *resp_buf_type, 109 struct kvec *resp_iov); 110 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, 111 struct smb_hdr * /* input */ , 112 struct smb_hdr * /* out */ , 113 int * /* bytes returned */ , const int); 114 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, 115 char *in_buf, int flags); 116 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *, 117 struct TCP_Server_Info *, 118 struct smb_rqst *); 119 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *, 120 struct smb_rqst *); 121 extern int cifs_check_receive(struct mid_q_entry *mid, 122 struct TCP_Server_Info *server, bool log_error); 123 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, 124 unsigned int size, unsigned int *num, 125 struct cifs_credits *credits); 126 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, 127 struct kvec *, int /* nvec to send */, 128 int * /* type of buf returned */, const int flags, 129 struct kvec * /* resp vec */); 130 extern int SendReceiveBlockingLock(const unsigned int xid, 131 struct cifs_tcon *ptcon, 132 struct smb_hdr *in_buf, 133 struct smb_hdr *out_buf, 134 int *bytes_returned); 135 void 136 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, 137 bool all_channels); 138 void 139 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, 140 bool mark_smb_session); 141 extern int cifs_reconnect(struct TCP_Server_Info *server, 142 bool mark_smb_session); 143 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr); 144 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *); 145 extern bool backup_cred(struct cifs_sb_info *); 146 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof); 147 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset, 148 unsigned int bytes_written); 149 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); 150 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, 151 int flags, 152 struct cifsFileInfo **ret_file); 153 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, 154 int flags, 155 struct cifsFileInfo **ret_file); 156 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); 157 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, 158 struct cifsFileInfo **ret_file); 159 extern unsigned int smbCalcSize(void *buf); 160 extern int decode_negTokenInit(unsigned char *security_blob, int length, 161 struct TCP_Server_Info *server); 162 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); 163 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); 164 extern int map_smb_to_linux_error(char *buf, bool logErr); 165 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr); 166 extern void header_assemble(struct smb_hdr *, char /* command */ , 167 const struct cifs_tcon *, int /* length of 168 fixed section (word count) in two byte units */); 169 extern int small_smb_init_no_tc(const int smb_cmd, const int wct, 170 struct cifs_ses *ses, 171 void **request_buf); 172 extern enum securityEnum select_sectype(struct TCP_Server_Info *server, 173 enum securityEnum requested); 174 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, 175 struct TCP_Server_Info *server, 176 const struct nls_table *nls_cp); 177 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); 178 extern u64 cifs_UnixTimeToNT(struct timespec64); 179 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, 180 int offset); 181 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); 182 extern int cifs_get_writer(struct cifsInodeInfo *cinode); 183 extern void cifs_put_writer(struct cifsInodeInfo *cinode); 184 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); 185 extern int cifs_unlock_range(struct cifsFileInfo *cfile, 186 struct file_lock *flock, const unsigned int xid); 187 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); 188 189 extern void cifs_down_write(struct rw_semaphore *sem); 190 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, 191 struct tcon_link *tlink, __u32 oplock, 192 const char *symlink_target); 193 extern int cifs_posix_open(const char *full_path, struct inode **inode, 194 struct super_block *sb, int mode, 195 unsigned int f_flags, __u32 *oplock, __u16 *netfid, 196 unsigned int xid); 197 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); 198 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, 199 FILE_UNIX_BASIC_INFO *info, 200 struct cifs_sb_info *cifs_sb); 201 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, 202 struct cifs_sb_info *); 203 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr); 204 extern struct inode *cifs_iget(struct super_block *sb, 205 struct cifs_fattr *fattr); 206 207 int cifs_get_inode_info(struct inode **inode, const char *full_path, 208 struct cifs_open_info_data *data, struct super_block *sb, int xid, 209 const struct cifs_fid *fid); 210 bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb, 211 struct cifs_fattr *fattr, 212 struct cifs_open_info_data *data); 213 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path, 214 struct super_block *sb, unsigned int xid); 215 extern int cifs_get_inode_info_unix(struct inode **pinode, 216 const unsigned char *search_path, 217 struct super_block *sb, unsigned int xid); 218 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, 219 unsigned int xid, const char *full_path, __u32 dosattr); 220 extern int cifs_rename_pending_delete(const char *full_path, 221 struct dentry *dentry, 222 const unsigned int xid); 223 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid, 224 struct cifs_fattr *fattr, uint sidtype); 225 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, 226 struct cifs_fattr *fattr, struct inode *inode, 227 bool get_mode_from_special_sid, 228 const char *path, const struct cifs_fid *pfid); 229 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, 230 kuid_t uid, kgid_t gid); 231 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, 232 const char *, u32 *, u32); 233 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *, 234 const struct cifs_fid *, u32 *, u32); 235 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, 236 struct dentry *dentry, int type); 237 extern int cifs_set_acl(struct mnt_idmap *idmap, 238 struct dentry *dentry, struct posix_acl *acl, int type); 239 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, 240 const char *, int); 241 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace); 242 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode); 243 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace); 244 245 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed); 246 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, 247 unsigned int to_read); 248 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, 249 size_t to_read); 250 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server, 251 struct page *page, 252 unsigned int page_offset, 253 unsigned int to_read); 254 int cifs_read_iter_from_socket(struct TCP_Server_Info *server, 255 struct iov_iter *iter, 256 unsigned int to_read); 257 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); 258 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); 259 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); 260 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); 261 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); 262 extern int cifs_match_super(struct super_block *, void *); 263 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); 264 extern void cifs_umount(struct cifs_sb_info *); 265 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); 266 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); 267 268 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, 269 __u64 length, __u8 type, __u16 flags, 270 struct cifsLockInfo **conf_lock, 271 int rw_check); 272 extern void cifs_add_pending_open(struct cifs_fid *fid, 273 struct tcon_link *tlink, 274 struct cifs_pending_open *open); 275 extern void cifs_add_pending_open_locked(struct cifs_fid *fid, 276 struct tcon_link *tlink, 277 struct cifs_pending_open *open); 278 extern void cifs_del_pending_open(struct cifs_pending_open *open); 279 280 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, 281 struct cifs_deferred_close **dclose); 282 283 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, 284 struct cifs_deferred_close *dclose); 285 286 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); 287 288 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); 289 290 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); 291 292 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, 293 const char *path); 294 extern struct TCP_Server_Info * 295 cifs_get_tcp_session(struct smb3_fs_context *ctx, 296 struct TCP_Server_Info *primary_server); 297 extern void cifs_put_tcp_session(struct TCP_Server_Info *server, 298 int from_reconnect); 299 extern void cifs_put_tcon(struct cifs_tcon *tcon); 300 301 extern void cifs_release_automount_timer(void); 302 303 void cifs_proc_init(void); 304 void cifs_proc_clean(void); 305 306 extern void cifs_move_llist(struct list_head *source, struct list_head *dest); 307 extern void cifs_free_llist(struct list_head *llist); 308 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); 309 310 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, 311 const struct nls_table *nlsc); 312 313 extern int cifs_negotiate_protocol(const unsigned int xid, 314 struct cifs_ses *ses, 315 struct TCP_Server_Info *server); 316 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, 317 struct TCP_Server_Info *server, 318 struct nls_table *nls_info); 319 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); 320 extern int CIFSSMBNegotiate(const unsigned int xid, 321 struct cifs_ses *ses, 322 struct TCP_Server_Info *server); 323 324 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, 325 const char *tree, struct cifs_tcon *tcon, 326 const struct nls_table *); 327 328 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, 329 const char *searchName, struct cifs_sb_info *cifs_sb, 330 __u16 *searchHandle, __u16 search_flags, 331 struct cifs_search_info *psrch_inf, 332 bool msearch); 333 334 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, 335 __u16 searchHandle, __u16 search_flags, 336 struct cifs_search_info *psrch_inf); 337 338 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, 339 const __u16 search_handle); 340 341 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 342 u16 netfid, FILE_ALL_INFO *pFindData); 343 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 344 const char *search_Name, FILE_ALL_INFO *data, 345 int legacy /* whether to use old info level */, 346 const struct nls_table *nls_codepage, int remap); 347 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, 348 const char *search_name, FILE_ALL_INFO *data, 349 const struct nls_table *nls_codepage, int remap); 350 351 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 352 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); 353 extern int CIFSSMBUnixQPathInfo(const unsigned int xid, 354 struct cifs_tcon *tcon, 355 const unsigned char *searchName, 356 FILE_UNIX_BASIC_INFO *pFindData, 357 const struct nls_table *nls_codepage, int remap); 358 359 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, 360 const char *search_name, 361 struct dfs_info3_param **target_nodes, 362 unsigned int *num_of_nodes, 363 const struct nls_table *nls_codepage, int remap); 364 365 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, 366 unsigned int *num_of_nodes, 367 struct dfs_info3_param **target_nodes, 368 const struct nls_table *nls_codepage, int remap, 369 const char *searchName, bool is_unicode); 370 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, 371 struct cifs_sb_info *cifs_sb, 372 struct smb3_fs_context *ctx); 373 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 374 struct kstatfs *FSData); 375 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, 376 struct kstatfs *FSData); 377 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, 378 __u64 cap); 379 380 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, 381 struct cifs_tcon *tcon); 382 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); 383 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); 384 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, 385 struct kstatfs *FSData); 386 387 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, 388 const char *fileName, const FILE_BASIC_INFO *data, 389 const struct nls_table *nls_codepage, 390 struct cifs_sb_info *cifs_sb); 391 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, 392 const FILE_BASIC_INFO *data, __u16 fid, 393 __u32 pid_of_opener); 394 extern int CIFSSMBSetFileDisposition(const unsigned int xid, 395 struct cifs_tcon *tcon, 396 bool delete_file, __u16 fid, 397 __u32 pid_of_opener); 398 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, 399 const char *file_name, __u64 size, 400 struct cifs_sb_info *cifs_sb, bool set_allocation); 401 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, 402 struct cifsFileInfo *cfile, __u64 size, 403 bool set_allocation); 404 405 struct cifs_unix_set_info_args { 406 __u64 ctime; 407 __u64 atime; 408 __u64 mtime; 409 __u64 mode; 410 kuid_t uid; 411 kgid_t gid; 412 dev_t device; 413 }; 414 415 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, 416 struct cifs_tcon *tcon, 417 const struct cifs_unix_set_info_args *args, 418 u16 fid, u32 pid_of_opener); 419 420 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, 421 struct cifs_tcon *tcon, const char *file_name, 422 const struct cifs_unix_set_info_args *args, 423 const struct nls_table *nls_codepage, 424 int remap); 425 426 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, 427 umode_t mode, struct cifs_tcon *tcon, 428 const char *name, struct cifs_sb_info *cifs_sb); 429 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, 430 const char *name, struct cifs_sb_info *cifs_sb); 431 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, 432 const char *name, __u16 type, 433 const struct nls_table *nls_codepage, 434 int remap_special_chars); 435 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, 436 const char *name, struct cifs_sb_info *cifs_sb); 437 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, 438 const char *from_name, const char *to_name, 439 struct cifs_sb_info *cifs_sb); 440 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, 441 int netfid, const char *target_name, 442 const struct nls_table *nls_codepage, 443 int remap_special_chars); 444 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, 445 const char *from_name, const char *to_name, 446 struct cifs_sb_info *cifs_sb); 447 extern int CIFSUnixCreateHardLink(const unsigned int xid, 448 struct cifs_tcon *tcon, 449 const char *fromName, const char *toName, 450 const struct nls_table *nls_codepage, 451 int remap_special_chars); 452 extern int CIFSUnixCreateSymLink(const unsigned int xid, 453 struct cifs_tcon *tcon, 454 const char *fromName, const char *toName, 455 const struct nls_table *nls_codepage, int remap); 456 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, 457 struct cifs_tcon *tcon, 458 const unsigned char *searchName, char **syminfo, 459 const struct nls_table *nls_codepage, int remap); 460 extern int cifs_query_reparse_point(const unsigned int xid, 461 struct cifs_tcon *tcon, 462 struct cifs_sb_info *cifs_sb, 463 const char *full_path, 464 u32 *tag, struct kvec *rsp, 465 int *rsp_buftype); 466 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 467 __u16 fid, char **symlinkinfo, 468 const struct nls_table *nls_codepage); 469 extern int CIFSSMB_set_compression(const unsigned int xid, 470 struct cifs_tcon *tcon, __u16 fid); 471 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, 472 int *oplock, FILE_ALL_INFO *buf); 473 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, 474 const char *fileName, const int disposition, 475 const int access_flags, const int omode, 476 __u16 *netfid, int *pOplock, FILE_ALL_INFO *, 477 const struct nls_table *nls_codepage, int remap); 478 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, 479 u32 posix_flags, __u64 mode, __u16 *netfid, 480 FILE_UNIX_BASIC_INFO *pRetData, 481 __u32 *pOplock, const char *name, 482 const struct nls_table *nls_codepage, int remap); 483 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, 484 const int smb_file_id); 485 486 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, 487 const int smb_file_id); 488 489 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, 490 unsigned int *nbytes, char **buf, 491 int *return_buf_type); 492 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, 493 unsigned int *nbytes, const char *buf); 494 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, 495 unsigned int *nbytes, struct kvec *iov, const int nvec); 496 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, 497 const char *search_name, __u64 *inode_number, 498 const struct nls_table *nls_codepage, 499 int remap); 500 501 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, 502 const __u16 netfid, const __u8 lock_type, 503 const __u32 num_unlock, const __u32 num_lock, 504 LOCKING_ANDX_RANGE *buf); 505 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, 506 const __u16 netfid, const __u32 netpid, const __u64 len, 507 const __u64 offset, const __u32 numUnlock, 508 const __u32 numLock, const __u8 lockType, 509 const bool waitFlag, const __u8 oplock_level); 510 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, 511 const __u16 smb_file_id, const __u32 netpid, 512 const loff_t start_offset, const __u64 len, 513 struct file_lock *, const __u16 lock_type, 514 const bool waitFlag); 515 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); 516 extern int CIFSSMBEcho(struct TCP_Server_Info *server); 517 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); 518 519 extern struct cifs_ses *sesInfoAlloc(void); 520 extern void sesInfoFree(struct cifs_ses *); 521 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled); 522 extern void tconInfoFree(struct cifs_tcon *); 523 524 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, 525 __u32 *pexpected_response_sequence_number); 526 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *, 527 __u32 *); 528 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *); 529 extern int cifs_verify_signature(struct smb_rqst *rqst, 530 struct TCP_Server_Info *server, 531 __u32 expected_sequence_number); 532 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); 533 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); 534 extern int calc_seckey(struct cifs_ses *); 535 extern int generate_smb30signingkey(struct cifs_ses *ses, 536 struct TCP_Server_Info *server); 537 extern int generate_smb311signingkey(struct cifs_ses *ses, 538 struct TCP_Server_Info *server); 539 540 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 541 extern int CIFSSMBCopy(unsigned int xid, 542 struct cifs_tcon *source_tcon, 543 const char *fromName, 544 const __u16 target_tid, 545 const char *toName, const int flags, 546 const struct nls_table *nls_codepage, 547 int remap_special_chars); 548 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, 549 const unsigned char *searchName, 550 const unsigned char *ea_name, char *EAData, 551 size_t bufsize, struct cifs_sb_info *cifs_sb); 552 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, 553 const char *fileName, const char *ea_name, 554 const void *ea_value, const __u16 ea_value_len, 555 const struct nls_table *nls_codepage, 556 struct cifs_sb_info *cifs_sb); 557 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, 558 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); 559 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, 560 struct cifs_ntsd *, __u32, int); 561 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, 562 const unsigned char *searchName, 563 struct posix_acl **acl, const int acl_type, 564 const struct nls_table *nls_codepage, int remap); 565 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, 566 const unsigned char *fileName, 567 const struct posix_acl *acl, const int acl_type, 568 const struct nls_table *nls_codepage, int remap); 569 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, 570 const int netfid, __u64 *pExtAttrBits, __u64 *pMask); 571 #endif /* CIFS_ALLOW_INSECURE_LEGACY */ 572 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); 573 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); 574 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, 575 struct cifs_sb_info *cifs_sb, 576 struct cifs_fattr *fattr, 577 const unsigned char *path); 578 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, 579 const struct nls_table *codepage); 580 581 extern struct TCP_Server_Info * 582 cifs_find_tcp_session(struct smb3_fs_context *ctx); 583 584 void __cifs_put_smb_ses(struct cifs_ses *ses); 585 586 extern struct cifs_ses * 587 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); 588 589 void cifs_readdata_release(struct kref *refcount); 590 int cifs_async_readv(struct cifs_readdata *rdata); 591 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); 592 593 int cifs_async_writev(struct cifs_writedata *wdata, 594 void (*release)(struct kref *kref)); 595 void cifs_writev_complete(struct work_struct *work); 596 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete); 597 void cifs_writedata_release(struct kref *refcount); 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 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); 612 void cifs_aio_ctx_release(struct kref *refcount); 613 614 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); 615 void cifs_free_hash(struct shash_desc **sdesc); 616 617 struct cifs_chan * 618 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server); 619 int cifs_try_adding_channels(struct cifs_ses *ses); 620 bool is_server_using_iface(struct TCP_Server_Info *server, 621 struct cifs_server_iface *iface); 622 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); 623 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses); 624 625 unsigned int 626 cifs_ses_get_chan_index(struct cifs_ses *ses, 627 struct TCP_Server_Info *server); 628 void 629 cifs_chan_set_in_reconnect(struct cifs_ses *ses, 630 struct TCP_Server_Info *server); 631 void 632 cifs_chan_clear_in_reconnect(struct cifs_ses *ses, 633 struct TCP_Server_Info *server); 634 bool 635 cifs_chan_in_reconnect(struct cifs_ses *ses, 636 struct TCP_Server_Info *server); 637 void 638 cifs_chan_set_need_reconnect(struct cifs_ses *ses, 639 struct TCP_Server_Info *server); 640 void 641 cifs_chan_clear_need_reconnect(struct cifs_ses *ses, 642 struct TCP_Server_Info *server); 643 bool 644 cifs_chan_needs_reconnect(struct cifs_ses *ses, 645 struct TCP_Server_Info *server); 646 bool 647 cifs_chan_is_iface_active(struct cifs_ses *ses, 648 struct TCP_Server_Info *server); 649 int 650 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); 651 int 652 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); 653 654 void extract_unc_hostname(const char *unc, const char **h, size_t *len); 655 int copy_path_name(char *dst, const char *src); 656 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, 657 int resp_buftype, 658 struct cifs_search_info *srch_inf); 659 660 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); 661 void cifs_put_tcp_super(struct super_block *sb); 662 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); 663 char *extract_hostname(const char *unc); 664 char *extract_sharename(const char *unc); 665 int parse_reparse_point(struct reparse_data_buffer *buf, 666 u32 plen, struct cifs_sb_info *cifs_sb, 667 bool unicode, struct cifs_open_info_data *data); 668 669 #ifdef CONFIG_CIFS_DFS_UPCALL 670 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, 671 const char *old_path, 672 const struct nls_table *nls_codepage, 673 struct dfs_info3_param *referral, int remap) 674 { 675 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, 676 referral, NULL); 677 } 678 679 int match_target_ip(struct TCP_Server_Info *server, 680 const char *share, size_t share_len, 681 bool *result); 682 int cifs_inval_name_dfs_link_error(const unsigned int xid, 683 struct cifs_tcon *tcon, 684 struct cifs_sb_info *cifs_sb, 685 const char *full_path, 686 bool *islink); 687 #else 688 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, 689 struct cifs_tcon *tcon, 690 struct cifs_sb_info *cifs_sb, 691 const char *full_path, 692 bool *islink) 693 { 694 *islink = false; 695 return 0; 696 } 697 #endif 698 699 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) 700 { 701 if (cifs_sb && (backup_cred(cifs_sb))) 702 return options | CREATE_OPEN_BACKUP_INTENT; 703 else 704 return options; 705 } 706 707 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon); 708 void cifs_put_tcon_super(struct super_block *sb); 709 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); 710 711 /* Put references of @ses and @ses->dfs_root_ses */ 712 static inline void cifs_put_smb_ses(struct cifs_ses *ses) 713 { 714 struct cifs_ses *rses = ses->dfs_root_ses; 715 716 __cifs_put_smb_ses(ses); 717 if (rses) 718 __cifs_put_smb_ses(rses); 719 } 720 721 /* Get an active reference of @ses and @ses->dfs_root_ses. 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 both 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); 732 733 ses->ses_count++; 734 if (ses->dfs_root_ses) 735 ses->dfs_root_ses->ses_count++; 736 } 737 738 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) 739 { 740 if (strlen(s1) != strlen(s2)) 741 return false; 742 for (; *s1; s1++, s2++) { 743 if (*s1 == '/' || *s1 == '\\') { 744 if (*s2 != '/' && *s2 != '\\') 745 return false; 746 } else if (tolower(*s1) != tolower(*s2)) 747 return false; 748 } 749 return true; 750 } 751 752 static inline void release_mid(struct mid_q_entry *mid) 753 { 754 kref_put(&mid->refcount, __release_mid); 755 } 756 757 #endif /* _CIFSPROTO_H */ 758