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);
alloc_dentry_path(void)66 static inline void *alloc_dentry_path(void)
67 {
68 return __getname();
69 }
70
free_dentry_path(void * page)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 size_t size, size_t *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
136 void
137 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
138 bool all_channels);
139 void
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,
148 bool from_readdir);
149 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
150 unsigned int bytes_written);
151 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result,
152 bool was_async);
153 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
154 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
155 int flags,
156 struct cifsFileInfo **ret_file);
157 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
158 int flags,
159 struct cifsFileInfo **ret_file);
160 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
161 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
162 struct cifsFileInfo **ret_file);
163 extern unsigned int smbCalcSize(void *buf);
164 extern int decode_negTokenInit(unsigned char *security_blob, int length,
165 struct TCP_Server_Info *server);
166 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
167 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
168 extern int map_smb_to_linux_error(char *buf, bool logErr);
169 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
170 extern void header_assemble(struct smb_hdr *, char /* command */ ,
171 const struct cifs_tcon *, int /* length of
172 fixed section (word count) in two byte units */);
173 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
174 struct cifs_ses *ses,
175 void **request_buf);
176 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
177 enum securityEnum requested);
178 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
179 struct TCP_Server_Info *server,
180 const struct nls_table *nls_cp);
181 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
182 extern u64 cifs_UnixTimeToNT(struct timespec64);
183 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
184 int offset);
185 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
186 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
187 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
188 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
189 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
190 struct file_lock *flock, const unsigned int xid);
191 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
192
193 extern void cifs_down_write(struct rw_semaphore *sem);
194 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
195 struct tcon_link *tlink, __u32 oplock,
196 const char *symlink_target);
197 extern int cifs_posix_open(const char *full_path, struct inode **inode,
198 struct super_block *sb, int mode,
199 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
200 unsigned int xid);
201 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
202 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
203 FILE_UNIX_BASIC_INFO *info,
204 struct cifs_sb_info *cifs_sb);
205 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
206 struct cifs_sb_info *);
207 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
208 bool from_readdir);
209 extern struct inode *cifs_iget(struct super_block *sb,
210 struct cifs_fattr *fattr);
211
212 int cifs_get_inode_info(struct inode **inode, const char *full_path,
213 struct cifs_open_info_data *data, struct super_block *sb, int xid,
214 const struct cifs_fid *fid);
215 extern int smb311_posix_get_inode_info(struct inode **inode,
216 const char *full_path,
217 struct cifs_open_info_data *data,
218 struct super_block *sb,
219 const unsigned int xid);
220 extern int cifs_get_inode_info_unix(struct inode **pinode,
221 const unsigned char *search_path,
222 struct super_block *sb, unsigned int xid);
223 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
224 unsigned int xid, const char *full_path, __u32 dosattr);
225 extern int cifs_rename_pending_delete(const char *full_path,
226 struct dentry *dentry,
227 const unsigned int xid);
228 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
229 struct cifs_fattr *fattr, uint sidtype);
230 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
231 struct cifs_fattr *fattr, struct inode *inode,
232 bool get_mode_from_special_sid,
233 const char *path, const struct cifs_fid *pfid);
234 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
235 kuid_t uid, kgid_t gid);
236 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
237 const char *, u32 *, u32);
238 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
239 const struct cifs_fid *, u32 *, u32);
240 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
241 struct dentry *dentry, int type);
242 extern int cifs_set_acl(struct mnt_idmap *idmap,
243 struct dentry *dentry, struct posix_acl *acl, int type);
244 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
245 const char *, int);
246 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
247 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
248 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
249
250 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
251 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
252 unsigned int to_read);
253 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
254 size_t to_read);
255 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
256 struct page *page,
257 unsigned int page_offset,
258 unsigned int to_read);
259 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
260 struct iov_iter *iter,
261 unsigned int to_read);
262 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
263 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
264 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
265 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
266 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
267 extern int cifs_match_super(struct super_block *, void *);
268 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
269 extern void cifs_umount(struct cifs_sb_info *);
270 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
271 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
272
273 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
274 __u64 length, __u8 type, __u16 flags,
275 struct cifsLockInfo **conf_lock,
276 int rw_check);
277 extern void cifs_add_pending_open(struct cifs_fid *fid,
278 struct tcon_link *tlink,
279 struct cifs_pending_open *open);
280 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
281 struct tcon_link *tlink,
282 struct cifs_pending_open *open);
283 extern void cifs_del_pending_open(struct cifs_pending_open *open);
284
285 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
286 struct cifs_deferred_close **dclose);
287
288 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
289 struct cifs_deferred_close *dclose);
290
291 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
292
293 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
294
295 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
296
297 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
298 const char *path);
299
300 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
301 const char *path);
302
303 extern struct TCP_Server_Info *
304 cifs_get_tcp_session(struct smb3_fs_context *ctx,
305 struct TCP_Server_Info *primary_server);
306 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
307 int from_reconnect);
308 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
309
310 extern void cifs_release_automount_timer(void);
311
312 void cifs_proc_init(void);
313 void cifs_proc_clean(void);
314
315 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
316 extern void cifs_free_llist(struct list_head *llist);
317 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
318
319 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
320 const struct nls_table *nlsc);
321
322 extern int cifs_negotiate_protocol(const unsigned int xid,
323 struct cifs_ses *ses,
324 struct TCP_Server_Info *server);
325 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
326 struct TCP_Server_Info *server,
327 struct nls_table *nls_info);
328 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
329 extern int CIFSSMBNegotiate(const unsigned int xid,
330 struct cifs_ses *ses,
331 struct TCP_Server_Info *server);
332
333 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
334 const char *tree, struct cifs_tcon *tcon,
335 const struct nls_table *);
336
337 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
338 const char *searchName, struct cifs_sb_info *cifs_sb,
339 __u16 *searchHandle, __u16 search_flags,
340 struct cifs_search_info *psrch_inf,
341 bool msearch);
342
343 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
344 __u16 searchHandle, __u16 search_flags,
345 struct cifs_search_info *psrch_inf);
346
347 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
348 const __u16 search_handle);
349
350 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 u16 netfid, FILE_ALL_INFO *pFindData);
352 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
353 const char *search_Name, FILE_ALL_INFO *data,
354 int legacy /* whether to use old info level */,
355 const struct nls_table *nls_codepage, int remap);
356 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
357 const char *search_name, FILE_ALL_INFO *data,
358 const struct nls_table *nls_codepage, int remap);
359
360 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
361 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
362 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
363 struct cifs_tcon *tcon,
364 const unsigned char *searchName,
365 FILE_UNIX_BASIC_INFO *pFindData,
366 const struct nls_table *nls_codepage, int remap);
367
368 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
369 const char *search_name,
370 struct dfs_info3_param **target_nodes,
371 unsigned int *num_of_nodes,
372 const struct nls_table *nls_codepage, int remap);
373
374 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
375 unsigned int *num_of_nodes,
376 struct dfs_info3_param **target_nodes,
377 const struct nls_table *nls_codepage, int remap,
378 const char *searchName, bool is_unicode);
379 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
380 struct cifs_sb_info *cifs_sb,
381 struct smb3_fs_context *ctx);
382 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
383 struct kstatfs *FSData);
384 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
385 struct kstatfs *FSData);
386 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
387 __u64 cap);
388
389 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
390 struct cifs_tcon *tcon);
391 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
392 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
393 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
394 struct kstatfs *FSData);
395
396 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
397 const char *fileName, const FILE_BASIC_INFO *data,
398 const struct nls_table *nls_codepage,
399 struct cifs_sb_info *cifs_sb);
400 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
401 const FILE_BASIC_INFO *data, __u16 fid,
402 __u32 pid_of_opener);
403 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
404 struct cifs_tcon *tcon,
405 bool delete_file, __u16 fid,
406 __u32 pid_of_opener);
407 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
408 const char *file_name, __u64 size,
409 struct cifs_sb_info *cifs_sb, bool set_allocation,
410 struct dentry *dentry);
411 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
412 struct cifsFileInfo *cfile, __u64 size,
413 bool set_allocation);
414
415 struct cifs_unix_set_info_args {
416 __u64 ctime;
417 __u64 atime;
418 __u64 mtime;
419 __u64 mode;
420 kuid_t uid;
421 kgid_t gid;
422 dev_t device;
423 };
424
425 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
426 struct cifs_tcon *tcon,
427 const struct cifs_unix_set_info_args *args,
428 u16 fid, u32 pid_of_opener);
429
430 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
431 struct cifs_tcon *tcon, const char *file_name,
432 const struct cifs_unix_set_info_args *args,
433 const struct nls_table *nls_codepage,
434 int remap);
435
436 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
437 umode_t mode, struct cifs_tcon *tcon,
438 const char *name, struct cifs_sb_info *cifs_sb);
439 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
440 const char *name, struct cifs_sb_info *cifs_sb);
441 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
442 const char *name, __u16 type,
443 const struct nls_table *nls_codepage,
444 int remap_special_chars);
445 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
446 const char *name, struct cifs_sb_info *cifs_sb,
447 struct dentry *dentry);
448 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
449 struct dentry *source_dentry,
450 const char *from_name, const char *to_name,
451 struct cifs_sb_info *cifs_sb);
452 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
453 int netfid, const char *target_name,
454 const struct nls_table *nls_codepage,
455 int remap_special_chars);
456 int CIFSCreateHardLink(const unsigned int xid,
457 struct cifs_tcon *tcon,
458 struct dentry *source_dentry,
459 const char *from_name, const char *to_name,
460 struct cifs_sb_info *cifs_sb);
461 extern int CIFSUnixCreateHardLink(const unsigned int xid,
462 struct cifs_tcon *tcon,
463 const char *fromName, const char *toName,
464 const struct nls_table *nls_codepage,
465 int remap_special_chars);
466 extern int CIFSUnixCreateSymLink(const unsigned int xid,
467 struct cifs_tcon *tcon,
468 const char *fromName, const char *toName,
469 const struct nls_table *nls_codepage, int remap);
470 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
471 struct cifs_tcon *tcon,
472 const unsigned char *searchName, char **syminfo,
473 const struct nls_table *nls_codepage, int remap);
474 extern int cifs_query_reparse_point(const unsigned int xid,
475 struct cifs_tcon *tcon,
476 struct cifs_sb_info *cifs_sb,
477 const char *full_path,
478 u32 *tag, struct kvec *rsp,
479 int *rsp_buftype);
480 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
481 __u16 fid, char **symlinkinfo,
482 const struct nls_table *nls_codepage);
483 extern int CIFSSMB_set_compression(const unsigned int xid,
484 struct cifs_tcon *tcon, __u16 fid);
485 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
486 int *oplock, FILE_ALL_INFO *buf);
487 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
488 const char *fileName, const int disposition,
489 const int access_flags, const int omode,
490 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
491 const struct nls_table *nls_codepage, int remap);
492 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
493 u32 posix_flags, __u64 mode, __u16 *netfid,
494 FILE_UNIX_BASIC_INFO *pRetData,
495 __u32 *pOplock, const char *name,
496 const struct nls_table *nls_codepage, int remap);
497 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
498 const int smb_file_id);
499
500 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
501 const int smb_file_id);
502
503 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
504 unsigned int *nbytes, char **buf,
505 int *return_buf_type);
506 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
507 unsigned int *nbytes, const char *buf);
508 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
509 unsigned int *nbytes, struct kvec *iov, const int nvec);
510 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
511 const char *search_name, __u64 *inode_number,
512 const struct nls_table *nls_codepage,
513 int remap);
514
515 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
516 const __u16 netfid, const __u8 lock_type,
517 const __u32 num_unlock, const __u32 num_lock,
518 LOCKING_ANDX_RANGE *buf);
519 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
520 const __u16 netfid, const __u32 netpid, const __u64 len,
521 const __u64 offset, const __u32 numUnlock,
522 const __u32 numLock, const __u8 lockType,
523 const bool waitFlag, const __u8 oplock_level);
524 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
525 const __u16 smb_file_id, const __u32 netpid,
526 const loff_t start_offset, const __u64 len,
527 struct file_lock *, const __u16 lock_type,
528 const bool waitFlag);
529 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
530 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
531 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
532
533 extern struct cifs_ses *sesInfoAlloc(void);
534 extern void sesInfoFree(struct cifs_ses *);
535 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
536 enum smb3_tcon_ref_trace trace);
537 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
538
539 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
540 __u32 *pexpected_response_sequence_number);
541 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
542 __u32 *);
543 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
544 extern int cifs_verify_signature(struct smb_rqst *rqst,
545 struct TCP_Server_Info *server,
546 __u32 expected_sequence_number);
547 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
548 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
549 extern int calc_seckey(struct cifs_ses *);
550 extern int generate_smb30signingkey(struct cifs_ses *ses,
551 struct TCP_Server_Info *server);
552 extern int generate_smb311signingkey(struct cifs_ses *ses,
553 struct TCP_Server_Info *server);
554
555 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
556 extern int CIFSSMBCopy(unsigned int xid,
557 struct cifs_tcon *source_tcon,
558 const char *fromName,
559 const __u16 target_tid,
560 const char *toName, const int flags,
561 const struct nls_table *nls_codepage,
562 int remap_special_chars);
563 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
564 const unsigned char *searchName,
565 const unsigned char *ea_name, char *EAData,
566 size_t bufsize, struct cifs_sb_info *cifs_sb);
567 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
568 const char *fileName, const char *ea_name,
569 const void *ea_value, const __u16 ea_value_len,
570 const struct nls_table *nls_codepage,
571 struct cifs_sb_info *cifs_sb);
572 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
573 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
574 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
575 struct cifs_ntsd *, __u32, int);
576 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
577 const unsigned char *searchName,
578 struct posix_acl **acl, const int acl_type,
579 const struct nls_table *nls_codepage, int remap);
580 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
581 const unsigned char *fileName,
582 const struct posix_acl *acl, const int acl_type,
583 const struct nls_table *nls_codepage, int remap);
584 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
585 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
586 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
587 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
588 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
589 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
590 struct cifs_sb_info *cifs_sb,
591 struct cifs_fattr *fattr,
592 const unsigned char *path);
593 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
594 const struct nls_table *codepage);
595
596 extern struct TCP_Server_Info *
597 cifs_find_tcp_session(struct smb3_fs_context *ctx);
598
599 void __cifs_put_smb_ses(struct cifs_ses *ses);
600
601 extern struct cifs_ses *
602 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
603
604 int cifs_async_readv(struct cifs_io_subrequest *rdata);
605 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
606
607 void cifs_async_writev(struct cifs_io_subrequest *wdata);
608 void cifs_writev_complete(struct work_struct *work);
609 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
610 struct cifs_sb_info *cifs_sb,
611 const unsigned char *path, char *pbuf,
612 unsigned int *pbytes_read);
613 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
614 struct cifs_sb_info *cifs_sb,
615 const unsigned char *path, char *pbuf,
616 unsigned int *pbytes_written);
617 int __cifs_calc_signature(struct smb_rqst *rqst,
618 struct TCP_Server_Info *server, char *signature,
619 struct shash_desc *shash);
620 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
621 enum securityEnum);
622 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
623 void cifs_aio_ctx_release(struct kref *refcount);
624
625 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
626 void cifs_free_hash(struct shash_desc **sdesc);
627
628 struct cifs_chan *
629 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
630 int cifs_try_adding_channels(struct cifs_ses *ses);
631 bool is_server_using_iface(struct TCP_Server_Info *server,
632 struct cifs_server_iface *iface);
633 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
634 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
635
636 int
637 cifs_ses_get_chan_index(struct cifs_ses *ses,
638 struct TCP_Server_Info *server);
639 void
640 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
641 struct TCP_Server_Info *server);
642 void
643 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
644 struct TCP_Server_Info *server);
645 bool
646 cifs_chan_in_reconnect(struct cifs_ses *ses,
647 struct TCP_Server_Info *server);
648 void
649 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
650 struct TCP_Server_Info *server);
651 void
652 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
653 struct TCP_Server_Info *server);
654 bool
655 cifs_chan_needs_reconnect(struct cifs_ses *ses,
656 struct TCP_Server_Info *server);
657 bool
658 cifs_chan_is_iface_active(struct cifs_ses *ses,
659 struct TCP_Server_Info *server);
660 void
661 cifs_disable_secondary_channels(struct cifs_ses *ses);
662 void
663 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
664 int
665 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
666
667 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
668 int copy_path_name(char *dst, const char *src);
669 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
670 int resp_buftype,
671 struct cifs_search_info *srch_inf);
672
673 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
674 void cifs_put_tcp_super(struct super_block *sb);
675 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
676 char *extract_hostname(const char *unc);
677 char *extract_sharename(const char *unc);
678 int parse_reparse_point(struct reparse_data_buffer *buf,
679 u32 plen, struct cifs_sb_info *cifs_sb,
680 bool unicode, struct cifs_open_info_data *data);
681 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
682 struct dentry *dentry, struct cifs_tcon *tcon,
683 const char *full_path, umode_t mode, dev_t dev);
684
685 #ifdef CONFIG_CIFS_DFS_UPCALL
get_dfs_path(const unsigned int xid,struct cifs_ses * ses,const char * old_path,const struct nls_table * nls_codepage,struct dfs_info3_param * referral,int remap)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 *share, size_t share_len,
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
cifs_inval_name_dfs_link_error(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,bool * islink)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
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)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 /* Put references of @ses and its children */
cifs_put_smb_ses(struct cifs_ses * ses)726 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
727 {
728 struct cifs_ses *next;
729
730 do {
731 next = ses->dfs_root_ses;
732 __cifs_put_smb_ses(ses);
733 } while ((ses = next));
734 }
735
736 /* Get an active reference of @ses and its children.
737 *
738 * NOTE: make sure to call this function when incrementing reference count of
739 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
740 * will also get its reference count incremented.
741 *
742 * cifs_put_smb_ses() will put all references, so call it when you're done.
743 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)744 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
745 {
746 lockdep_assert_held(&cifs_tcp_ses_lock);
747
748 for (; ses; ses = ses->dfs_root_ses)
749 ses->ses_count++;
750 }
751
dfs_src_pathname_equal(const char * s1,const char * s2)752 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
753 {
754 if (strlen(s1) != strlen(s2))
755 return false;
756 for (; *s1; s1++, s2++) {
757 if (*s1 == '/' || *s1 == '\\') {
758 if (*s2 != '/' && *s2 != '\\')
759 return false;
760 } else if (tolower(*s1) != tolower(*s2))
761 return false;
762 }
763 return true;
764 }
765
release_mid(struct mid_q_entry * mid)766 static inline void release_mid(struct mid_q_entry *mid)
767 {
768 kref_put(&mid->refcount, __release_mid);
769 }
770
cifs_free_open_info(struct cifs_open_info_data * data)771 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
772 {
773 kfree(data->symlink_target);
774 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
775 memset(data, 0, sizeof(*data));
776 }
777
778 #endif /* _CIFSPROTO_H */
779