1 /* SPDX-License-Identifier: LGPL-2.1 */
4 * Copyright (c) International Business Machines Corp., 2002,2008
5 * Author(s): Steve French (sfrench@us.ibm.com)
10 #include <linux/nls.h>
11 #include <linux/ctype.h>
13 #ifdef CONFIG_CIFS_DFS_UPCALL
14 #include "dfs_cache.h"
19 struct smb3_fs_context;
22 *****************************************************************
24 *****************************************************************
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);
38 unsigned int __xid = _get_xid(); \
39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
41 from_kuid(&init_user_ns, current_fsuid())); \
42 trace_smb3_enter(__xid, __func__); \
46 #define free_xid(curr_xid) \
48 _free_xid(curr_xid); \
49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
50 __func__, curr_xid, (int)rc); \
52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
54 trace_smb3_exit_done(curr_xid, __func__); \
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,
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)
71 static inline void free_dentry_path(void *page)
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,
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,
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 *,
119 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
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);
137 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
140 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
141 bool mark_smb_session);
142 extern int cifs_reconnect(struct TCP_Server_Info *server,
143 bool mark_smb_session);
144 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
145 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
146 extern bool backup_cred(struct cifs_sb_info *);
147 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
149 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
150 unsigned int bytes_written);
151 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
152 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
154 struct cifsFileInfo **ret_file);
155 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
157 struct cifsFileInfo **ret_file);
158 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
159 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
160 struct cifsFileInfo **ret_file);
161 extern unsigned int smbCalcSize(void *buf);
162 extern int decode_negTokenInit(unsigned char *security_blob, int length,
163 struct TCP_Server_Info *server);
164 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
165 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
166 extern int map_smb_to_linux_error(char *buf, bool logErr);
167 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
168 extern void header_assemble(struct smb_hdr *, char /* command */ ,
169 const struct cifs_tcon *, int /* length of
170 fixed section (word count) in two byte units */);
171 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
172 struct cifs_ses *ses,
174 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
175 enum securityEnum requested);
176 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
177 struct TCP_Server_Info *server,
178 const struct nls_table *nls_cp);
179 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
180 extern u64 cifs_UnixTimeToNT(struct timespec64);
181 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
183 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
184 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
185 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
186 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
187 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
188 struct file_lock *flock, const unsigned int xid);
189 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
191 extern void cifs_down_write(struct rw_semaphore *sem);
192 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
193 struct tcon_link *tlink, __u32 oplock,
194 const char *symlink_target);
195 extern int cifs_posix_open(const char *full_path, struct inode **inode,
196 struct super_block *sb, int mode,
197 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
199 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
200 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
201 FILE_UNIX_BASIC_INFO *info,
202 struct cifs_sb_info *cifs_sb);
203 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
204 struct cifs_sb_info *);
205 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
207 extern struct inode *cifs_iget(struct super_block *sb,
208 struct cifs_fattr *fattr);
210 int cifs_get_inode_info(struct inode **inode, const char *full_path,
211 struct cifs_open_info_data *data, struct super_block *sb, int xid,
212 const struct cifs_fid *fid);
213 bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
214 struct cifs_fattr *fattr,
215 struct cifs_open_info_data *data);
217 extern int smb311_posix_get_inode_info(struct inode **inode,
218 const char *full_path,
219 struct cifs_open_info_data *data,
220 struct super_block *sb,
221 const unsigned int xid);
222 extern int cifs_get_inode_info_unix(struct inode **pinode,
223 const unsigned char *search_path,
224 struct super_block *sb, unsigned int xid);
225 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
226 unsigned int xid, const char *full_path, __u32 dosattr);
227 extern int cifs_rename_pending_delete(const char *full_path,
228 struct dentry *dentry,
229 const unsigned int xid);
230 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
231 struct cifs_fattr *fattr, uint sidtype);
232 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
233 struct cifs_fattr *fattr, struct inode *inode,
234 bool get_mode_from_special_sid,
235 const char *path, const struct cifs_fid *pfid);
236 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
237 kuid_t uid, kgid_t gid);
238 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
239 const char *, u32 *, u32);
240 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
241 const struct cifs_fid *, u32 *, u32);
242 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
243 struct dentry *dentry, int type);
244 extern int cifs_set_acl(struct mnt_idmap *idmap,
245 struct dentry *dentry, struct posix_acl *acl, int type);
246 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
248 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
249 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
250 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
252 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
253 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
254 unsigned int to_read);
255 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
257 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
259 unsigned int page_offset,
260 unsigned int 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);
275 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
276 __u64 length, __u8 type, __u16 flags,
277 struct cifsLockInfo **conf_lock,
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);
287 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
288 struct cifs_deferred_close **dclose);
290 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
291 struct cifs_deferred_close *dclose);
293 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
295 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
297 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
299 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
301 extern struct TCP_Server_Info *
302 cifs_get_tcp_session(struct smb3_fs_context *ctx,
303 struct TCP_Server_Info *primary_server);
304 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
306 extern void cifs_put_tcon(struct cifs_tcon *tcon);
308 extern void cifs_release_automount_timer(void);
310 void cifs_proc_init(void);
311 void cifs_proc_clean(void);
313 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
314 extern void cifs_free_llist(struct list_head *llist);
315 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
317 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
318 const struct nls_table *nlsc);
320 extern int cifs_negotiate_protocol(const unsigned int xid,
321 struct cifs_ses *ses,
322 struct TCP_Server_Info *server);
323 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
324 struct TCP_Server_Info *server,
325 struct nls_table *nls_info);
326 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
327 extern int CIFSSMBNegotiate(const unsigned int xid,
328 struct cifs_ses *ses,
329 struct TCP_Server_Info *server);
331 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
332 const char *tree, struct cifs_tcon *tcon,
333 const struct nls_table *);
335 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
336 const char *searchName, struct cifs_sb_info *cifs_sb,
337 __u16 *searchHandle, __u16 search_flags,
338 struct cifs_search_info *psrch_inf,
341 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
342 __u16 searchHandle, __u16 search_flags,
343 struct cifs_search_info *psrch_inf);
345 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
346 const __u16 search_handle);
348 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
349 u16 netfid, FILE_ALL_INFO *pFindData);
350 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 const char *search_Name, FILE_ALL_INFO *data,
352 int legacy /* whether to use old info level */,
353 const struct nls_table *nls_codepage, int remap);
354 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
355 const char *search_name, FILE_ALL_INFO *data,
356 const struct nls_table *nls_codepage, int remap);
358 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
359 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
360 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
361 struct cifs_tcon *tcon,
362 const unsigned char *searchName,
363 FILE_UNIX_BASIC_INFO *pFindData,
364 const struct nls_table *nls_codepage, int remap);
366 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
367 const char *search_name,
368 struct dfs_info3_param **target_nodes,
369 unsigned int *num_of_nodes,
370 const struct nls_table *nls_codepage, int remap);
372 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
373 unsigned int *num_of_nodes,
374 struct dfs_info3_param **target_nodes,
375 const struct nls_table *nls_codepage, int remap,
376 const char *searchName, bool is_unicode);
377 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
378 struct cifs_sb_info *cifs_sb,
379 struct smb3_fs_context *ctx);
380 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
381 struct kstatfs *FSData);
382 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
383 struct kstatfs *FSData);
384 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
387 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
388 struct cifs_tcon *tcon);
389 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
390 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
391 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
392 struct kstatfs *FSData);
394 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
395 const char *fileName, const FILE_BASIC_INFO *data,
396 const struct nls_table *nls_codepage,
397 struct cifs_sb_info *cifs_sb);
398 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
399 const FILE_BASIC_INFO *data, __u16 fid,
400 __u32 pid_of_opener);
401 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
402 struct cifs_tcon *tcon,
403 bool delete_file, __u16 fid,
404 __u32 pid_of_opener);
405 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
406 const char *file_name, __u64 size,
407 struct cifs_sb_info *cifs_sb, bool set_allocation);
408 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
409 struct cifsFileInfo *cfile, __u64 size,
410 bool set_allocation);
412 struct cifs_unix_set_info_args {
422 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
423 struct cifs_tcon *tcon,
424 const struct cifs_unix_set_info_args *args,
425 u16 fid, u32 pid_of_opener);
427 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
428 struct cifs_tcon *tcon, const char *file_name,
429 const struct cifs_unix_set_info_args *args,
430 const struct nls_table *nls_codepage,
433 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
434 umode_t mode, struct cifs_tcon *tcon,
435 const char *name, struct cifs_sb_info *cifs_sb);
436 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
437 const char *name, struct cifs_sb_info *cifs_sb);
438 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
439 const char *name, __u16 type,
440 const struct nls_table *nls_codepage,
441 int remap_special_chars);
442 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
443 const char *name, struct cifs_sb_info *cifs_sb);
444 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
445 struct dentry *source_dentry,
446 const char *from_name, const char *to_name,
447 struct cifs_sb_info *cifs_sb);
448 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
449 int netfid, const char *target_name,
450 const struct nls_table *nls_codepage,
451 int remap_special_chars);
452 int CIFSCreateHardLink(const unsigned int xid,
453 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 CIFSUnixCreateHardLink(const unsigned int xid,
458 struct cifs_tcon *tcon,
459 const char *fromName, const char *toName,
460 const struct nls_table *nls_codepage,
461 int remap_special_chars);
462 extern int CIFSUnixCreateSymLink(const unsigned int xid,
463 struct cifs_tcon *tcon,
464 const char *fromName, const char *toName,
465 const struct nls_table *nls_codepage, int remap);
466 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
467 struct cifs_tcon *tcon,
468 const unsigned char *searchName, char **syminfo,
469 const struct nls_table *nls_codepage, int remap);
470 extern int cifs_query_reparse_point(const unsigned int xid,
471 struct cifs_tcon *tcon,
472 struct cifs_sb_info *cifs_sb,
473 const char *full_path,
474 u32 *tag, struct kvec *rsp,
476 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
477 __u16 fid, char **symlinkinfo,
478 const struct nls_table *nls_codepage);
479 extern int CIFSSMB_set_compression(const unsigned int xid,
480 struct cifs_tcon *tcon, __u16 fid);
481 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
482 int *oplock, FILE_ALL_INFO *buf);
483 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
484 const char *fileName, const int disposition,
485 const int access_flags, const int omode,
486 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
487 const struct nls_table *nls_codepage, int remap);
488 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
489 u32 posix_flags, __u64 mode, __u16 *netfid,
490 FILE_UNIX_BASIC_INFO *pRetData,
491 __u32 *pOplock, const char *name,
492 const struct nls_table *nls_codepage, int remap);
493 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
494 const int smb_file_id);
496 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
497 const int smb_file_id);
499 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
500 unsigned int *nbytes, char **buf,
501 int *return_buf_type);
502 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
503 unsigned int *nbytes, const char *buf);
504 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
505 unsigned int *nbytes, struct kvec *iov, const int nvec);
506 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
507 const char *search_name, __u64 *inode_number,
508 const struct nls_table *nls_codepage,
511 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
512 const __u16 netfid, const __u8 lock_type,
513 const __u32 num_unlock, const __u32 num_lock,
514 LOCKING_ANDX_RANGE *buf);
515 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
516 const __u16 netfid, const __u32 netpid, const __u64 len,
517 const __u64 offset, const __u32 numUnlock,
518 const __u32 numLock, const __u8 lockType,
519 const bool waitFlag, const __u8 oplock_level);
520 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
521 const __u16 smb_file_id, const __u32 netpid,
522 const loff_t start_offset, const __u64 len,
523 struct file_lock *, const __u16 lock_type,
524 const bool waitFlag);
525 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
526 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
527 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
529 extern struct cifs_ses *sesInfoAlloc(void);
530 extern void sesInfoFree(struct cifs_ses *);
531 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled);
532 extern void tconInfoFree(struct cifs_tcon *);
534 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
535 __u32 *pexpected_response_sequence_number);
536 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
538 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
539 extern int cifs_verify_signature(struct smb_rqst *rqst,
540 struct TCP_Server_Info *server,
541 __u32 expected_sequence_number);
542 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
543 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
544 extern int calc_seckey(struct cifs_ses *);
545 extern int generate_smb30signingkey(struct cifs_ses *ses,
546 struct TCP_Server_Info *server);
547 extern int generate_smb311signingkey(struct cifs_ses *ses,
548 struct TCP_Server_Info *server);
550 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
551 extern int CIFSSMBCopy(unsigned int xid,
552 struct cifs_tcon *source_tcon,
553 const char *fromName,
554 const __u16 target_tid,
555 const char *toName, const int flags,
556 const struct nls_table *nls_codepage,
557 int remap_special_chars);
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 cifs_ntsd **acl_inf, __u32 *buflen);
569 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
570 struct cifs_ntsd *, __u32, int);
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);
591 extern struct TCP_Server_Info *
592 cifs_find_tcp_session(struct smb3_fs_context *ctx);
594 void __cifs_put_smb_ses(struct cifs_ses *ses);
596 extern struct cifs_ses *
597 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
599 void cifs_readdata_release(struct kref *refcount);
600 int cifs_async_readv(struct cifs_readdata *rdata);
601 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
603 int cifs_async_writev(struct cifs_writedata *wdata,
604 void (*release)(struct kref *kref));
605 void cifs_writev_complete(struct work_struct *work);
606 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
607 void cifs_writedata_release(struct kref *refcount);
608 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
609 struct cifs_sb_info *cifs_sb,
610 const unsigned char *path, char *pbuf,
611 unsigned int *pbytes_read);
612 int cifs_create_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_written);
616 int __cifs_calc_signature(struct smb_rqst *rqst,
617 struct TCP_Server_Info *server, char *signature,
618 struct shash_desc *shash);
619 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
621 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
622 void cifs_aio_ctx_release(struct kref *refcount);
624 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
625 void cifs_free_hash(struct shash_desc **sdesc);
628 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
629 int cifs_try_adding_channels(struct cifs_ses *ses);
630 bool is_server_using_iface(struct TCP_Server_Info *server,
631 struct cifs_server_iface *iface);
632 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
633 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
636 cifs_ses_get_chan_index(struct cifs_ses *ses,
637 struct TCP_Server_Info *server);
639 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
640 struct TCP_Server_Info *server);
642 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
643 struct TCP_Server_Info *server);
645 cifs_chan_in_reconnect(struct cifs_ses *ses,
646 struct TCP_Server_Info *server);
648 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
649 struct TCP_Server_Info *server);
651 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
652 struct TCP_Server_Info *server);
654 cifs_chan_needs_reconnect(struct cifs_ses *ses,
655 struct TCP_Server_Info *server);
657 cifs_chan_is_iface_active(struct cifs_ses *ses,
658 struct TCP_Server_Info *server);
660 cifs_disable_secondary_channels(struct cifs_ses *ses);
662 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
664 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
666 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
667 int copy_path_name(char *dst, const char *src);
668 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
670 struct cifs_search_info *srch_inf);
672 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
673 void cifs_put_tcp_super(struct super_block *sb);
674 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
675 char *extract_hostname(const char *unc);
676 char *extract_sharename(const char *unc);
677 int parse_reparse_point(struct reparse_data_buffer *buf,
678 u32 plen, struct cifs_sb_info *cifs_sb,
679 bool unicode, struct cifs_open_info_data *data);
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);
684 #ifdef CONFIG_CIFS_DFS_UPCALL
685 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
686 const char *old_path,
687 const struct nls_table *nls_codepage,
688 struct dfs_info3_param *referral, int remap)
690 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
694 int match_target_ip(struct TCP_Server_Info *server,
695 const char *share, size_t share_len,
697 int cifs_inval_name_dfs_link_error(const unsigned int xid,
698 struct cifs_tcon *tcon,
699 struct cifs_sb_info *cifs_sb,
700 const char *full_path,
703 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
704 struct cifs_tcon *tcon,
705 struct cifs_sb_info *cifs_sb,
706 const char *full_path,
714 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
716 if (cifs_sb && (backup_cred(cifs_sb)))
717 return options | CREATE_OPEN_BACKUP_INTENT;
722 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
723 void cifs_put_tcon_super(struct super_block *sb);
724 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
726 /* Put references of @ses and its children */
727 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
729 struct cifs_ses *next;
732 next = ses->dfs_root_ses;
733 __cifs_put_smb_ses(ses);
734 } while ((ses = next));
737 /* Get an active reference of @ses and its children.
739 * NOTE: make sure to call this function when incrementing reference count of
740 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
741 * will also get its reference count incremented.
743 * cifs_put_smb_ses() will put all references, so call it when you're done.
745 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
747 lockdep_assert_held(&cifs_tcp_ses_lock);
749 for (; ses; ses = ses->dfs_root_ses)
753 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
755 if (strlen(s1) != strlen(s2))
757 for (; *s1; s1++, s2++) {
758 if (*s1 == '/' || *s1 == '\\') {
759 if (*s2 != '/' && *s2 != '\\')
761 } else if (tolower(*s1) != tolower(*s2))
767 static inline void release_mid(struct mid_q_entry *mid)
769 kref_put(&mid->refcount, __release_mid);
772 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
774 kfree(data->symlink_target);
775 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
776 memset(data, 0, sizeof(*data));
779 #endif /* _CIFSPROTO_H */