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 "trace.h"
12 #ifdef CONFIG_CIFS_DFS_UPCALL
13 #include "dfs_cache.h"
14 #endif
15
16 struct statfs;
17 struct smb_rqst;
18 struct smb3_fs_context;
19
20 /*
21 *****************************************************************
22 * All Prototypes
23 *****************************************************************
24 */
25
26 extern struct smb_hdr *cifs_buf_get(void);
27 extern void cifs_buf_release(void *);
28 extern struct smb_hdr *cifs_small_buf_get(void);
29 extern void cifs_small_buf_release(void *);
30 extern void free_rsp_buf(int, void *);
31 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
32 unsigned int /* length */);
33 extern unsigned int _get_xid(void);
34 extern void _free_xid(unsigned int);
35 #define get_xid() \
36 ({ \
37 unsigned int __xid = _get_xid(); \
38 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
39 __func__, __xid, \
40 from_kuid(&init_user_ns, current_fsuid())); \
41 trace_smb3_enter(__xid, __func__); \
42 __xid; \
43 })
44
45 #define free_xid(curr_xid) \
46 do { \
47 _free_xid(curr_xid); \
48 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
49 __func__, curr_xid, (int)rc); \
50 if (rc) \
51 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
52 else \
53 trace_smb3_exit_done(curr_xid, __func__); \
54 } while (0)
55 extern int init_cifs_idmap(void);
56 extern void exit_cifs_idmap(void);
57 extern int init_cifs_spnego(void);
58 extern void exit_cifs_spnego(void);
59 extern const char *build_path_from_dentry(struct dentry *, void *);
60 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
61 void *page, bool prefix);
alloc_dentry_path(void)62 static inline void *alloc_dentry_path(void)
63 {
64 return __getname();
65 }
66
free_dentry_path(void * page)67 static inline void free_dentry_path(void *page)
68 {
69 if (page)
70 __putname(page);
71 }
72
73 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
74 struct cifs_sb_info *cifs_sb,
75 struct cifs_tcon *tcon,
76 int add_treename);
77 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
78 extern char *cifs_compose_mount_options(const char *sb_mountdata,
79 const char *fullpath, const struct dfs_info3_param *ref,
80 char **devname);
81 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
82 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
83 struct TCP_Server_Info *server);
84 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
85 extern void cifs_delete_mid(struct mid_q_entry *mid);
86 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
87 extern void cifs_wake_up_task(struct mid_q_entry *mid);
88 extern int cifs_handle_standard(struct TCP_Server_Info *server,
89 struct mid_q_entry *mid);
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 bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
93 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
94 extern int cifs_call_async(struct TCP_Server_Info *server,
95 struct smb_rqst *rqst,
96 mid_receive_t *receive, mid_callback_t *callback,
97 mid_handle_t *handle, void *cbdata, const int flags,
98 const struct cifs_credits *exist_credits);
99 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
100 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
101 struct TCP_Server_Info *server,
102 struct smb_rqst *rqst, int *resp_buf_type,
103 const int flags, struct kvec *resp_iov);
104 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
105 struct TCP_Server_Info *server,
106 const int flags, const int num_rqst,
107 struct smb_rqst *rqst, int *resp_buf_type,
108 struct kvec *resp_iov);
109 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
110 struct smb_hdr * /* input */ ,
111 struct smb_hdr * /* out */ ,
112 int * /* bytes returned */ , const int);
113 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
114 char *in_buf, int flags);
115 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
116 struct TCP_Server_Info *,
117 struct smb_rqst *);
118 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
119 struct smb_rqst *);
120 extern int cifs_check_receive(struct mid_q_entry *mid,
121 struct TCP_Server_Info *server, bool log_error);
122 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
123 unsigned int size, unsigned int *num,
124 struct cifs_credits *credits);
125 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
126 struct kvec *, int /* nvec to send */,
127 int * /* type of buf returned */, const int flags,
128 struct kvec * /* resp vec */);
129 extern int SendReceiveBlockingLock(const unsigned int xid,
130 struct cifs_tcon *ptcon,
131 struct smb_hdr *in_buf ,
132 struct smb_hdr *out_buf,
133 int *bytes_returned);
134 extern int cifs_reconnect(struct TCP_Server_Info *server);
135 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
136 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
137 extern bool backup_cred(struct cifs_sb_info *);
138 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
139 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
140 unsigned int bytes_written);
141 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
142 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
143 int flags,
144 struct cifsFileInfo **ret_file);
145 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
146 int flags,
147 struct cifsFileInfo **ret_file);
148 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
149 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
150 struct cifsFileInfo **ret_file);
151 extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
152 extern int decode_negTokenInit(unsigned char *security_blob, int length,
153 struct TCP_Server_Info *server);
154 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
155 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
156 extern int map_smb_to_linux_error(char *buf, bool logErr);
157 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
158 extern void header_assemble(struct smb_hdr *, char /* command */ ,
159 const struct cifs_tcon *, int /* length of
160 fixed section (word count) in two byte units */);
161 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
162 struct cifs_ses *ses,
163 void **request_buf);
164 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
165 enum securityEnum requested);
166 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
167 const struct nls_table *nls_cp);
168 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
169 extern u64 cifs_UnixTimeToNT(struct timespec64);
170 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
171 int offset);
172 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
173 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
174 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
175 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
176 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
177 struct file_lock *flock, const unsigned int xid);
178 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
179
180 extern void cifs_down_write(struct rw_semaphore *sem);
181 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
182 struct file *file,
183 struct tcon_link *tlink,
184 __u32 oplock);
185 extern int cifs_posix_open(const char *full_path, struct inode **inode,
186 struct super_block *sb, int mode,
187 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
188 unsigned int xid);
189 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
190 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
191 FILE_UNIX_BASIC_INFO *info,
192 struct cifs_sb_info *cifs_sb);
193 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
194 struct cifs_sb_info *);
195 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
196 extern struct inode *cifs_iget(struct super_block *sb,
197 struct cifs_fattr *fattr);
198
199 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
200 FILE_ALL_INFO *data, struct super_block *sb,
201 int xid, const struct cifs_fid *fid);
202 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
203 struct super_block *sb, unsigned int xid);
204 extern int cifs_get_inode_info_unix(struct inode **pinode,
205 const unsigned char *search_path,
206 struct super_block *sb, unsigned int xid);
207 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
208 unsigned int xid, const char *full_path, __u32 dosattr);
209 extern int cifs_rename_pending_delete(const char *full_path,
210 struct dentry *dentry,
211 const unsigned int xid);
212 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
213 struct cifs_fattr *fattr, uint sidtype);
214 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
215 struct cifs_fattr *fattr, struct inode *inode,
216 bool get_mode_from_special_sid,
217 const char *path, const struct cifs_fid *pfid);
218 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
219 kuid_t uid, kgid_t gid);
220 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
221 const char *, u32 *, u32);
222 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
223 const struct cifs_fid *, u32 *, u32);
224 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
225 const char *, int);
226 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
227 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
228 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
229
230 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
231 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
232 unsigned int to_read);
233 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
234 size_t to_read);
235 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
236 struct page *page,
237 unsigned int page_offset,
238 unsigned int to_read);
239 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
240 extern int cifs_match_super(struct super_block *, void *);
241 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
242 extern void cifs_umount(struct cifs_sb_info *);
243 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
244 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
245
246 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
247 __u64 length, __u8 type, __u16 flags,
248 struct cifsLockInfo **conf_lock,
249 int rw_check);
250 extern void cifs_add_pending_open(struct cifs_fid *fid,
251 struct tcon_link *tlink,
252 struct cifs_pending_open *open);
253 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
254 struct tcon_link *tlink,
255 struct cifs_pending_open *open);
256 extern void cifs_del_pending_open(struct cifs_pending_open *open);
257
258 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
259 struct cifs_deferred_close **dclose);
260
261 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
262 struct cifs_deferred_close *dclose);
263
264 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
265
266 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
267
268 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
269
270 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
271 const char *path);
272
273 extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb3_fs_context *ctx);
274 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
275 int from_reconnect);
276 extern void cifs_put_tcon(struct cifs_tcon *tcon);
277
278 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
279 extern void cifs_dfs_release_automount_timer(void);
280 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
281 #define cifs_dfs_release_automount_timer() do { } while (0)
282 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
283
284 void cifs_proc_init(void);
285 void cifs_proc_clean(void);
286
287 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
288 extern void cifs_free_llist(struct list_head *llist);
289 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
290
291 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
292 const struct nls_table *nlsc);
293
294 extern int cifs_negotiate_protocol(const unsigned int xid,
295 struct cifs_ses *ses);
296 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
297 struct nls_table *nls_info);
298 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
299 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
300
301 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
302 const char *tree, struct cifs_tcon *tcon,
303 const struct nls_table *);
304
305 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
306 const char *searchName, struct cifs_sb_info *cifs_sb,
307 __u16 *searchHandle, __u16 search_flags,
308 struct cifs_search_info *psrch_inf,
309 bool msearch);
310
311 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
312 __u16 searchHandle, __u16 search_flags,
313 struct cifs_search_info *psrch_inf);
314
315 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
316 const __u16 search_handle);
317
318 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
319 u16 netfid, FILE_ALL_INFO *pFindData);
320 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
321 const char *search_Name, FILE_ALL_INFO *data,
322 int legacy /* whether to use old info level */,
323 const struct nls_table *nls_codepage, int remap);
324 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
325 const char *search_name, FILE_ALL_INFO *data,
326 const struct nls_table *nls_codepage, int remap);
327
328 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
329 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
330 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
331 struct cifs_tcon *tcon,
332 const unsigned char *searchName,
333 FILE_UNIX_BASIC_INFO *pFindData,
334 const struct nls_table *nls_codepage, int remap);
335
336 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
337 const char *search_name,
338 struct dfs_info3_param **target_nodes,
339 unsigned int *num_of_nodes,
340 const struct nls_table *nls_codepage, int remap);
341
342 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
343 unsigned int *num_of_nodes,
344 struct dfs_info3_param **target_nodes,
345 const struct nls_table *nls_codepage, int remap,
346 const char *searchName, bool is_unicode);
347 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
348 struct cifs_sb_info *cifs_sb,
349 struct smb3_fs_context *ctx);
350 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 struct kstatfs *FSData);
352 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
353 struct kstatfs *FSData);
354 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
355 __u64 cap);
356
357 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
358 struct cifs_tcon *tcon);
359 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
360 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
361 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
362 struct kstatfs *FSData);
363
364 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
365 const char *fileName, const FILE_BASIC_INFO *data,
366 const struct nls_table *nls_codepage,
367 struct cifs_sb_info *cifs_sb);
368 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
369 const FILE_BASIC_INFO *data, __u16 fid,
370 __u32 pid_of_opener);
371 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
372 struct cifs_tcon *tcon,
373 bool delete_file, __u16 fid,
374 __u32 pid_of_opener);
375 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
376 const char *file_name, __u64 size,
377 struct cifs_sb_info *cifs_sb, bool set_allocation);
378 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
379 struct cifsFileInfo *cfile, __u64 size,
380 bool set_allocation);
381
382 struct cifs_unix_set_info_args {
383 __u64 ctime;
384 __u64 atime;
385 __u64 mtime;
386 __u64 mode;
387 kuid_t uid;
388 kgid_t gid;
389 dev_t device;
390 };
391
392 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
393 struct cifs_tcon *tcon,
394 const struct cifs_unix_set_info_args *args,
395 u16 fid, u32 pid_of_opener);
396
397 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
398 struct cifs_tcon *tcon, const char *file_name,
399 const struct cifs_unix_set_info_args *args,
400 const struct nls_table *nls_codepage,
401 int remap);
402
403 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
404 umode_t mode, struct cifs_tcon *tcon,
405 const char *name, struct cifs_sb_info *cifs_sb);
406 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
407 const char *name, struct cifs_sb_info *cifs_sb);
408 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
409 const char *name, __u16 type,
410 const struct nls_table *nls_codepage,
411 int remap_special_chars);
412 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
413 const char *name, struct cifs_sb_info *cifs_sb);
414 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
415 const char *from_name, const char *to_name,
416 struct cifs_sb_info *cifs_sb);
417 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
418 int netfid, const char *target_name,
419 const struct nls_table *nls_codepage,
420 int remap_special_chars);
421 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
422 const char *from_name, const char *to_name,
423 struct cifs_sb_info *cifs_sb);
424 extern int CIFSUnixCreateHardLink(const unsigned int xid,
425 struct cifs_tcon *tcon,
426 const char *fromName, const char *toName,
427 const struct nls_table *nls_codepage,
428 int remap_special_chars);
429 extern int CIFSUnixCreateSymLink(const unsigned int xid,
430 struct cifs_tcon *tcon,
431 const char *fromName, const char *toName,
432 const struct nls_table *nls_codepage, int remap);
433 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
434 struct cifs_tcon *tcon,
435 const unsigned char *searchName, char **syminfo,
436 const struct nls_table *nls_codepage, int remap);
437 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
438 __u16 fid, char **symlinkinfo,
439 const struct nls_table *nls_codepage);
440 extern int CIFSSMB_set_compression(const unsigned int xid,
441 struct cifs_tcon *tcon, __u16 fid);
442 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
443 int *oplock, FILE_ALL_INFO *buf);
444 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
445 const char *fileName, const int disposition,
446 const int access_flags, const int omode,
447 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
448 const struct nls_table *nls_codepage, int remap);
449 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
450 u32 posix_flags, __u64 mode, __u16 *netfid,
451 FILE_UNIX_BASIC_INFO *pRetData,
452 __u32 *pOplock, const char *name,
453 const struct nls_table *nls_codepage, int remap);
454 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
455 const int smb_file_id);
456
457 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
458 const int smb_file_id);
459
460 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
461 unsigned int *nbytes, char **buf,
462 int *return_buf_type);
463 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
464 unsigned int *nbytes, const char *buf);
465 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
466 unsigned int *nbytes, struct kvec *iov, const int nvec);
467 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
468 const char *search_name, __u64 *inode_number,
469 const struct nls_table *nls_codepage,
470 int remap);
471
472 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
473 const __u16 netfid, const __u8 lock_type,
474 const __u32 num_unlock, const __u32 num_lock,
475 LOCKING_ANDX_RANGE *buf);
476 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
477 const __u16 netfid, const __u32 netpid, const __u64 len,
478 const __u64 offset, const __u32 numUnlock,
479 const __u32 numLock, const __u8 lockType,
480 const bool waitFlag, const __u8 oplock_level);
481 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
482 const __u16 smb_file_id, const __u32 netpid,
483 const loff_t start_offset, const __u64 len,
484 struct file_lock *, const __u16 lock_type,
485 const bool waitFlag);
486 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
487 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
488 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
489
490 extern struct cifs_ses *sesInfoAlloc(void);
491 extern void sesInfoFree(struct cifs_ses *);
492 extern struct cifs_tcon *tconInfoAlloc(void);
493 extern void tconInfoFree(struct cifs_tcon *);
494
495 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
496 __u32 *pexpected_response_sequence_number);
497 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
498 __u32 *);
499 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
500 extern int cifs_verify_signature(struct smb_rqst *rqst,
501 struct TCP_Server_Info *server,
502 __u32 expected_sequence_number);
503 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
504 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
505 extern int calc_seckey(struct cifs_ses *);
506 extern int generate_smb30signingkey(struct cifs_ses *);
507 extern int generate_smb311signingkey(struct cifs_ses *);
508
509 extern int CIFSSMBCopy(unsigned int xid,
510 struct cifs_tcon *source_tcon,
511 const char *fromName,
512 const __u16 target_tid,
513 const char *toName, const int flags,
514 const struct nls_table *nls_codepage,
515 int remap_special_chars);
516 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
517 const unsigned char *searchName,
518 const unsigned char *ea_name, char *EAData,
519 size_t bufsize, struct cifs_sb_info *cifs_sb);
520 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
521 const char *fileName, const char *ea_name,
522 const void *ea_value, const __u16 ea_value_len,
523 const struct nls_table *nls_codepage,
524 struct cifs_sb_info *cifs_sb);
525 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
526 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
527 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
528 struct cifs_ntsd *, __u32, int);
529 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
530 const unsigned char *searchName,
531 char *acl_inf, const int buflen, const int acl_type,
532 const struct nls_table *nls_codepage, int remap_special_chars);
533 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
534 const unsigned char *fileName,
535 const char *local_acl, const int buflen, const int acl_type,
536 const struct nls_table *nls_codepage, int remap_special_chars);
537 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
538 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
539 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
540 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
541 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
542 struct cifs_sb_info *cifs_sb,
543 struct cifs_fattr *fattr,
544 const unsigned char *path);
545 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
546 const struct nls_table *codepage);
547
548 extern int
549 cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);
550
551 extern struct TCP_Server_Info *
552 cifs_find_tcp_session(struct smb3_fs_context *ctx);
553
554 extern void cifs_put_smb_ses(struct cifs_ses *ses);
555
556 extern struct cifs_ses *
557 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
558
559 void cifs_readdata_release(struct kref *refcount);
560 int cifs_async_readv(struct cifs_readdata *rdata);
561 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
562
563 int cifs_async_writev(struct cifs_writedata *wdata,
564 void (*release)(struct kref *kref));
565 void cifs_writev_complete(struct work_struct *work);
566 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
567 work_func_t complete);
568 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
569 work_func_t complete);
570 void cifs_writedata_release(struct kref *refcount);
571 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
572 struct cifs_sb_info *cifs_sb,
573 const unsigned char *path, char *pbuf,
574 unsigned int *pbytes_read);
575 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
576 struct cifs_sb_info *cifs_sb,
577 const unsigned char *path, char *pbuf,
578 unsigned int *pbytes_written);
579 int __cifs_calc_signature(struct smb_rqst *rqst,
580 struct TCP_Server_Info *server, char *signature,
581 struct shash_desc *shash);
582 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
583 enum securityEnum);
584 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
585 void cifs_aio_ctx_release(struct kref *refcount);
586 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
587 void smb2_cached_lease_break(struct work_struct *work);
588
589 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
590 struct sdesc **sdesc);
591 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
592
593 void rqst_page_get_length(const struct smb_rqst *rqst, unsigned int page,
594 unsigned int *len, unsigned int *offset);
595 struct cifs_chan *
596 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
597 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
598 bool is_server_using_iface(struct TCP_Server_Info *server,
599 struct cifs_server_iface *iface);
600 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
601
602 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
603 int copy_path_name(char *dst, const char *src);
604 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
605 int resp_buftype,
606 struct cifs_search_info *srch_inf);
607
608 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
609 void cifs_put_tcp_super(struct super_block *sb);
610 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
611 char *extract_hostname(const char *unc);
612 char *extract_sharename(const char *unc);
613
614 #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)615 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
616 const char *old_path,
617 const struct nls_table *nls_codepage,
618 struct dfs_info3_param *referral, int remap)
619 {
620 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
621 referral, NULL);
622 }
623
624 int match_target_ip(struct TCP_Server_Info *server,
625 const char *share, size_t share_len,
626 bool *result);
627 #endif
628
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)629 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
630 {
631 if (cifs_sb && (backup_cred(cifs_sb)))
632 return options | CREATE_OPEN_BACKUP_INTENT;
633 else
634 return options;
635 }
636
637 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
638 void cifs_put_tcon_super(struct super_block *sb);
639
640 #endif /* _CIFSPROTO_H */
641