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 unsigned int size, unsigned int *num,
125 struct cifs_credits *credits);
126 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
127 struct kvec *, int /* nvec to send */,
128 int * /* type of buf returned */, const int flags,
129 struct kvec * /* resp vec */);
130 extern int SendReceiveBlockingLock(const unsigned int xid,
131 struct cifs_tcon *ptcon,
132 struct smb_hdr *in_buf,
133 struct smb_hdr *out_buf,
134 int *bytes_returned);
135
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 *, __u64 eof);
148 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
149 unsigned int bytes_written);
150 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
151 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
152 int flags,
153 struct cifsFileInfo **ret_file);
154 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
155 int flags,
156 struct cifsFileInfo **ret_file);
157 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
158 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
159 struct cifsFileInfo **ret_file);
160 extern unsigned int smbCalcSize(void *buf);
161 extern int decode_negTokenInit(unsigned char *security_blob, int length,
162 struct TCP_Server_Info *server);
163 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
164 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
165 extern int map_smb_to_linux_error(char *buf, bool logErr);
166 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
167 extern void header_assemble(struct smb_hdr *, char /* command */ ,
168 const struct cifs_tcon *, int /* length of
169 fixed section (word count) in two byte units */);
170 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
171 struct cifs_ses *ses,
172 void **request_buf);
173 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
174 enum securityEnum requested);
175 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
176 struct TCP_Server_Info *server,
177 const struct nls_table *nls_cp);
178 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
179 extern u64 cifs_UnixTimeToNT(struct timespec64);
180 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
181 int offset);
182 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
183 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
184 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
185 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
186 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
187 struct file_lock *flock, const unsigned int xid);
188 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
189
190 extern void cifs_down_write(struct rw_semaphore *sem);
191 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
192 struct tcon_link *tlink, __u32 oplock,
193 const char *symlink_target);
194 extern int cifs_posix_open(const char *full_path, struct inode **inode,
195 struct super_block *sb, int mode,
196 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
197 unsigned int xid);
198 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
199 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
200 FILE_UNIX_BASIC_INFO *info,
201 struct cifs_sb_info *cifs_sb);
202 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
203 struct cifs_sb_info *);
204 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
205 extern struct inode *cifs_iget(struct super_block *sb,
206 struct cifs_fattr *fattr);
207
208 int cifs_get_inode_info(struct inode **inode, const char *full_path,
209 struct cifs_open_info_data *data, struct super_block *sb, int xid,
210 const struct cifs_fid *fid);
211 bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
212 struct cifs_fattr *fattr,
213 struct cifs_open_info_data *data);
214 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
215 struct super_block *sb, unsigned int xid);
216 extern int cifs_get_inode_info_unix(struct inode **pinode,
217 const unsigned char *search_path,
218 struct super_block *sb, unsigned int xid);
219 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
220 unsigned int xid, const char *full_path, __u32 dosattr);
221 extern int cifs_rename_pending_delete(const char *full_path,
222 struct dentry *dentry,
223 const unsigned int xid);
224 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
225 struct cifs_fattr *fattr, uint sidtype);
226 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
227 struct cifs_fattr *fattr, struct inode *inode,
228 bool get_mode_from_special_sid,
229 const char *path, const struct cifs_fid *pfid);
230 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
231 kuid_t uid, kgid_t gid);
232 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
233 const char *, u32 *, u32);
234 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
235 const struct cifs_fid *, u32 *, u32);
236 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
237 struct dentry *dentry, int type);
238 extern int cifs_set_acl(struct mnt_idmap *idmap,
239 struct dentry *dentry, struct posix_acl *acl, int type);
240 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
241 const char *, int);
242 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
243 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
244 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
245
246 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
247 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
248 unsigned int to_read);
249 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
250 size_t to_read);
251 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
252 struct page *page,
253 unsigned int page_offset,
254 unsigned int to_read);
255 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
256 struct iov_iter *iter,
257 unsigned int to_read);
258 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
259 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
260 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
261 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
262 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
263 extern int cifs_match_super(struct super_block *, void *);
264 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
265 extern void cifs_umount(struct cifs_sb_info *);
266 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
267 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
268
269 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
270 __u64 length, __u8 type, __u16 flags,
271 struct cifsLockInfo **conf_lock,
272 int rw_check);
273 extern void cifs_add_pending_open(struct cifs_fid *fid,
274 struct tcon_link *tlink,
275 struct cifs_pending_open *open);
276 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
277 struct tcon_link *tlink,
278 struct cifs_pending_open *open);
279 extern void cifs_del_pending_open(struct cifs_pending_open *open);
280
281 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
282 struct cifs_deferred_close **dclose);
283
284 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
285 struct cifs_deferred_close *dclose);
286
287 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
288
289 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
290
291 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
292
293 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
294 const char *path);
295 extern struct TCP_Server_Info *
296 cifs_get_tcp_session(struct smb3_fs_context *ctx,
297 struct TCP_Server_Info *primary_server);
298 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
299 int from_reconnect);
300 extern void cifs_put_tcon(struct cifs_tcon *tcon);
301
302 extern void cifs_release_automount_timer(void);
303
304 void cifs_proc_init(void);
305 void cifs_proc_clean(void);
306
307 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
308 extern void cifs_free_llist(struct list_head *llist);
309 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
310
311 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
312 const struct nls_table *nlsc);
313
314 extern int cifs_negotiate_protocol(const unsigned int xid,
315 struct cifs_ses *ses,
316 struct TCP_Server_Info *server);
317 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
318 struct TCP_Server_Info *server,
319 struct nls_table *nls_info);
320 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
321 extern int CIFSSMBNegotiate(const unsigned int xid,
322 struct cifs_ses *ses,
323 struct TCP_Server_Info *server);
324
325 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
326 const char *tree, struct cifs_tcon *tcon,
327 const struct nls_table *);
328
329 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
330 const char *searchName, struct cifs_sb_info *cifs_sb,
331 __u16 *searchHandle, __u16 search_flags,
332 struct cifs_search_info *psrch_inf,
333 bool msearch);
334
335 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
336 __u16 searchHandle, __u16 search_flags,
337 struct cifs_search_info *psrch_inf);
338
339 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
340 const __u16 search_handle);
341
342 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
343 u16 netfid, FILE_ALL_INFO *pFindData);
344 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
345 const char *search_Name, FILE_ALL_INFO *data,
346 int legacy /* whether to use old info level */,
347 const struct nls_table *nls_codepage, int remap);
348 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
349 const char *search_name, FILE_ALL_INFO *data,
350 const struct nls_table *nls_codepage, int remap);
351
352 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
353 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
354 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
355 struct cifs_tcon *tcon,
356 const unsigned char *searchName,
357 FILE_UNIX_BASIC_INFO *pFindData,
358 const struct nls_table *nls_codepage, int remap);
359
360 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
361 const char *search_name,
362 struct dfs_info3_param **target_nodes,
363 unsigned int *num_of_nodes,
364 const struct nls_table *nls_codepage, int remap);
365
366 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
367 unsigned int *num_of_nodes,
368 struct dfs_info3_param **target_nodes,
369 const struct nls_table *nls_codepage, int remap,
370 const char *searchName, bool is_unicode);
371 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
372 struct cifs_sb_info *cifs_sb,
373 struct smb3_fs_context *ctx);
374 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
375 struct kstatfs *FSData);
376 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
377 struct kstatfs *FSData);
378 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
379 __u64 cap);
380
381 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
382 struct cifs_tcon *tcon);
383 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
384 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
385 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
386 struct kstatfs *FSData);
387
388 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
389 const char *fileName, const FILE_BASIC_INFO *data,
390 const struct nls_table *nls_codepage,
391 struct cifs_sb_info *cifs_sb);
392 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
393 const FILE_BASIC_INFO *data, __u16 fid,
394 __u32 pid_of_opener);
395 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
396 struct cifs_tcon *tcon,
397 bool delete_file, __u16 fid,
398 __u32 pid_of_opener);
399 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
400 const char *file_name, __u64 size,
401 struct cifs_sb_info *cifs_sb, bool set_allocation);
402 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
403 struct cifsFileInfo *cfile, __u64 size,
404 bool set_allocation);
405
406 struct cifs_unix_set_info_args {
407 __u64 ctime;
408 __u64 atime;
409 __u64 mtime;
410 __u64 mode;
411 kuid_t uid;
412 kgid_t gid;
413 dev_t device;
414 };
415
416 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
417 struct cifs_tcon *tcon,
418 const struct cifs_unix_set_info_args *args,
419 u16 fid, u32 pid_of_opener);
420
421 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
422 struct cifs_tcon *tcon, const char *file_name,
423 const struct cifs_unix_set_info_args *args,
424 const struct nls_table *nls_codepage,
425 int remap);
426
427 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
428 umode_t mode, struct cifs_tcon *tcon,
429 const char *name, struct cifs_sb_info *cifs_sb);
430 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
431 const char *name, struct cifs_sb_info *cifs_sb);
432 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
433 const char *name, __u16 type,
434 const struct nls_table *nls_codepage,
435 int remap_special_chars);
436 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
437 const char *name, struct cifs_sb_info *cifs_sb);
438 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
439 struct dentry *source_dentry,
440 const char *from_name, const char *to_name,
441 struct cifs_sb_info *cifs_sb);
442 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
443 int netfid, const char *target_name,
444 const struct nls_table *nls_codepage,
445 int remap_special_chars);
446 int CIFSCreateHardLink(const unsigned int xid,
447 struct cifs_tcon *tcon,
448 struct dentry *source_dentry,
449 const char *from_name, const char *to_name,
450 struct cifs_sb_info *cifs_sb);
451 extern int CIFSUnixCreateHardLink(const unsigned int xid,
452 struct cifs_tcon *tcon,
453 const char *fromName, const char *toName,
454 const struct nls_table *nls_codepage,
455 int remap_special_chars);
456 extern int CIFSUnixCreateSymLink(const unsigned int xid,
457 struct cifs_tcon *tcon,
458 const char *fromName, const char *toName,
459 const struct nls_table *nls_codepage, int remap);
460 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
461 struct cifs_tcon *tcon,
462 const unsigned char *searchName, char **syminfo,
463 const struct nls_table *nls_codepage, int remap);
464 extern int cifs_query_reparse_point(const unsigned int xid,
465 struct cifs_tcon *tcon,
466 struct cifs_sb_info *cifs_sb,
467 const char *full_path,
468 u32 *tag, struct kvec *rsp,
469 int *rsp_buftype);
470 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
471 __u16 fid, char **symlinkinfo,
472 const struct nls_table *nls_codepage);
473 extern int CIFSSMB_set_compression(const unsigned int xid,
474 struct cifs_tcon *tcon, __u16 fid);
475 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
476 int *oplock, FILE_ALL_INFO *buf);
477 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
478 const char *fileName, const int disposition,
479 const int access_flags, const int omode,
480 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
481 const struct nls_table *nls_codepage, int remap);
482 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
483 u32 posix_flags, __u64 mode, __u16 *netfid,
484 FILE_UNIX_BASIC_INFO *pRetData,
485 __u32 *pOplock, const char *name,
486 const struct nls_table *nls_codepage, int remap);
487 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
488 const int smb_file_id);
489
490 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
491 const int smb_file_id);
492
493 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
494 unsigned int *nbytes, char **buf,
495 int *return_buf_type);
496 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
497 unsigned int *nbytes, const char *buf);
498 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
499 unsigned int *nbytes, struct kvec *iov, const int nvec);
500 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
501 const char *search_name, __u64 *inode_number,
502 const struct nls_table *nls_codepage,
503 int remap);
504
505 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
506 const __u16 netfid, const __u8 lock_type,
507 const __u32 num_unlock, const __u32 num_lock,
508 LOCKING_ANDX_RANGE *buf);
509 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
510 const __u16 netfid, const __u32 netpid, const __u64 len,
511 const __u64 offset, const __u32 numUnlock,
512 const __u32 numLock, const __u8 lockType,
513 const bool waitFlag, const __u8 oplock_level);
514 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
515 const __u16 smb_file_id, const __u32 netpid,
516 const loff_t start_offset, const __u64 len,
517 struct file_lock *, const __u16 lock_type,
518 const bool waitFlag);
519 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
520 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
521 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
522
523 extern struct cifs_ses *sesInfoAlloc(void);
524 extern void sesInfoFree(struct cifs_ses *);
525 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled);
526 extern void tconInfoFree(struct cifs_tcon *);
527
528 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
529 __u32 *pexpected_response_sequence_number);
530 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
531 __u32 *);
532 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
533 extern int cifs_verify_signature(struct smb_rqst *rqst,
534 struct TCP_Server_Info *server,
535 __u32 expected_sequence_number);
536 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
537 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
538 extern int calc_seckey(struct cifs_ses *);
539 extern int generate_smb30signingkey(struct cifs_ses *ses,
540 struct TCP_Server_Info *server);
541 extern int generate_smb311signingkey(struct cifs_ses *ses,
542 struct TCP_Server_Info *server);
543
544 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
545 extern int CIFSSMBCopy(unsigned int xid,
546 struct cifs_tcon *source_tcon,
547 const char *fromName,
548 const __u16 target_tid,
549 const char *toName, const int flags,
550 const struct nls_table *nls_codepage,
551 int remap_special_chars);
552 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
553 const unsigned char *searchName,
554 const unsigned char *ea_name, char *EAData,
555 size_t bufsize, struct cifs_sb_info *cifs_sb);
556 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
557 const char *fileName, const char *ea_name,
558 const void *ea_value, const __u16 ea_value_len,
559 const struct nls_table *nls_codepage,
560 struct cifs_sb_info *cifs_sb);
561 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
562 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
563 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
564 struct cifs_ntsd *, __u32, int);
565 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
566 const unsigned char *searchName,
567 struct posix_acl **acl, const int acl_type,
568 const struct nls_table *nls_codepage, int remap);
569 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
570 const unsigned char *fileName,
571 const struct posix_acl *acl, const int acl_type,
572 const struct nls_table *nls_codepage, int remap);
573 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
574 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
575 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
576 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
577 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
578 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
579 struct cifs_sb_info *cifs_sb,
580 struct cifs_fattr *fattr,
581 const unsigned char *path);
582 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
583 const struct nls_table *codepage);
584
585 extern struct TCP_Server_Info *
586 cifs_find_tcp_session(struct smb3_fs_context *ctx);
587
588 void __cifs_put_smb_ses(struct cifs_ses *ses);
589
590 extern struct cifs_ses *
591 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
592
593 void cifs_readdata_release(struct kref *refcount);
594 int cifs_async_readv(struct cifs_readdata *rdata);
595 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
596
597 int cifs_async_writev(struct cifs_writedata *wdata,
598 void (*release)(struct kref *kref));
599 void cifs_writev_complete(struct work_struct *work);
600 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
601 void cifs_writedata_release(struct kref *refcount);
602 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
603 struct cifs_sb_info *cifs_sb,
604 const unsigned char *path, char *pbuf,
605 unsigned int *pbytes_read);
606 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
607 struct cifs_sb_info *cifs_sb,
608 const unsigned char *path, char *pbuf,
609 unsigned int *pbytes_written);
610 int __cifs_calc_signature(struct smb_rqst *rqst,
611 struct TCP_Server_Info *server, char *signature,
612 struct shash_desc *shash);
613 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
614 enum securityEnum);
615 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
616 void cifs_aio_ctx_release(struct kref *refcount);
617
618 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
619 void cifs_free_hash(struct shash_desc **sdesc);
620
621 struct cifs_chan *
622 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
623 int cifs_try_adding_channels(struct cifs_ses *ses);
624 bool is_server_using_iface(struct TCP_Server_Info *server,
625 struct cifs_server_iface *iface);
626 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
627 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
628
629 int
630 cifs_ses_get_chan_index(struct cifs_ses *ses,
631 struct TCP_Server_Info *server);
632 void
633 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
634 struct TCP_Server_Info *server);
635 void
636 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
637 struct TCP_Server_Info *server);
638 bool
639 cifs_chan_in_reconnect(struct cifs_ses *ses,
640 struct TCP_Server_Info *server);
641 void
642 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
643 struct TCP_Server_Info *server);
644 void
645 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
646 struct TCP_Server_Info *server);
647 bool
648 cifs_chan_needs_reconnect(struct cifs_ses *ses,
649 struct TCP_Server_Info *server);
650 bool
651 cifs_chan_is_iface_active(struct cifs_ses *ses,
652 struct TCP_Server_Info *server);
653 void
654 cifs_disable_secondary_channels(struct cifs_ses *ses);
655 int
656 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
657 int
658 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
659
660 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
661 int copy_path_name(char *dst, const char *src);
662 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
663 int resp_buftype,
664 struct cifs_search_info *srch_inf);
665
666 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
667 void cifs_put_tcp_super(struct super_block *sb);
668 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
669 char *extract_hostname(const char *unc);
670 char *extract_sharename(const char *unc);
671 int parse_reparse_point(struct reparse_data_buffer *buf,
672 u32 plen, struct cifs_sb_info *cifs_sb,
673 bool unicode, struct cifs_open_info_data *data);
674
675 #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)676 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
677 const char *old_path,
678 const struct nls_table *nls_codepage,
679 struct dfs_info3_param *referral, int remap)
680 {
681 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
682 referral, NULL);
683 }
684
685 int match_target_ip(struct TCP_Server_Info *server,
686 const char *share, size_t share_len,
687 bool *result);
688 int cifs_inval_name_dfs_link_error(const unsigned int xid,
689 struct cifs_tcon *tcon,
690 struct cifs_sb_info *cifs_sb,
691 const char *full_path,
692 bool *islink);
693 #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)694 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
695 struct cifs_tcon *tcon,
696 struct cifs_sb_info *cifs_sb,
697 const char *full_path,
698 bool *islink)
699 {
700 *islink = false;
701 return 0;
702 }
703 #endif
704
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)705 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
706 {
707 if (cifs_sb && (backup_cred(cifs_sb)))
708 return options | CREATE_OPEN_BACKUP_INTENT;
709 else
710 return options;
711 }
712
713 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
714 void cifs_put_tcon_super(struct super_block *sb);
715 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
716
717 /* Put references of @ses and @ses->dfs_root_ses */
cifs_put_smb_ses(struct cifs_ses * ses)718 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
719 {
720 struct cifs_ses *rses = ses->dfs_root_ses;
721
722 __cifs_put_smb_ses(ses);
723 if (rses)
724 __cifs_put_smb_ses(rses);
725 }
726
727 /* Get an active reference of @ses and @ses->dfs_root_ses.
728 *
729 * NOTE: make sure to call this function when incrementing reference count of
730 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
731 * will also get its reference count incremented.
732 *
733 * cifs_put_smb_ses() will put both references, so call it when you're done.
734 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)735 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
736 {
737 lockdep_assert_held(&cifs_tcp_ses_lock);
738
739 ses->ses_count++;
740 if (ses->dfs_root_ses)
741 ses->dfs_root_ses->ses_count++;
742 }
743
dfs_src_pathname_equal(const char * s1,const char * s2)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
release_mid(struct mid_q_entry * mid)758 static inline void release_mid(struct mid_q_entry *mid)
759 {
760 kref_put(&mid->refcount, __release_mid);
761 }
762
763 #endif /* _CIFSPROTO_H */
764