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