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 delete_mid(struct mid_q_entry *mid);
82 extern void release_mid(struct mid_q_entry *mid);
83 extern void cifs_wake_up_task(struct mid_q_entry *mid);
84 extern int cifs_handle_standard(struct TCP_Server_Info *server,
85 struct mid_q_entry *mid);
86 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
87 extern int smb3_parse_opt(const char *options, const char *key, char **val);
88 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
89 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
90 extern int cifs_call_async(struct TCP_Server_Info *server,
91 struct smb_rqst *rqst,
92 mid_receive_t *receive, mid_callback_t *callback,
93 mid_handle_t *handle, void *cbdata, const int flags,
94 const struct cifs_credits *exist_credits);
95 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
96 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
97 struct TCP_Server_Info *server,
98 struct smb_rqst *rqst, int *resp_buf_type,
99 const int flags, struct kvec *resp_iov);
100 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
101 struct TCP_Server_Info *server,
102 const int flags, const int num_rqst,
103 struct smb_rqst *rqst, int *resp_buf_type,
104 struct kvec *resp_iov);
105 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
106 struct smb_hdr * /* input */ ,
107 struct smb_hdr * /* out */ ,
108 int * /* bytes returned */ , const int);
109 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
110 char *in_buf, int flags);
111 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
112 struct TCP_Server_Info *,
113 struct smb_rqst *);
114 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
115 struct smb_rqst *);
116 extern int cifs_check_receive(struct mid_q_entry *mid,
117 struct TCP_Server_Info *server, bool log_error);
118 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
119 unsigned int size, unsigned int *num,
120 struct cifs_credits *credits);
121 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
122 struct kvec *, int /* nvec to send */,
123 int * /* type of buf returned */, const int flags,
124 struct kvec * /* resp vec */);
125 extern int SendReceiveBlockingLock(const unsigned int xid,
126 struct cifs_tcon *ptcon,
127 struct smb_hdr *in_buf ,
128 struct smb_hdr *out_buf,
129 int *bytes_returned);
130 void
131 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
132 bool all_channels);
133 void
134 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
135 bool mark_smb_session);
136 extern int cifs_reconnect(struct TCP_Server_Info *server,
137 bool mark_smb_session);
138 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
139 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
140 extern bool backup_cred(struct cifs_sb_info *);
141 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
142 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
143 unsigned int bytes_written);
144 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
145 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
146 int flags,
147 struct cifsFileInfo **ret_file);
148 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
149 int flags,
150 struct cifsFileInfo **ret_file);
151 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
152 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
153 struct cifsFileInfo **ret_file);
154 extern unsigned int smbCalcSize(void *buf);
155 extern int decode_negTokenInit(unsigned char *security_blob, int length,
156 struct TCP_Server_Info *server);
157 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
158 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
159 extern int map_smb_to_linux_error(char *buf, bool logErr);
160 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
161 extern void header_assemble(struct smb_hdr *, char /* command */ ,
162 const struct cifs_tcon *, int /* length of
163 fixed section (word count) in two byte units */);
164 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
165 struct cifs_ses *ses,
166 void **request_buf);
167 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
168 enum securityEnum requested);
169 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
170 struct TCP_Server_Info *server,
171 const struct nls_table *nls_cp);
172 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
173 extern u64 cifs_UnixTimeToNT(struct timespec64);
174 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
175 int offset);
176 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
177 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
178 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
179 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
180 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
181 struct file_lock *flock, const unsigned int xid);
182 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
183
184 extern void cifs_down_write(struct rw_semaphore *sem);
185 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
186 struct tcon_link *tlink, __u32 oplock,
187 const char *symlink_target);
188 extern int cifs_posix_open(const char *full_path, struct inode **inode,
189 struct super_block *sb, int mode,
190 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
191 unsigned int xid);
192 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
193 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
194 FILE_UNIX_BASIC_INFO *info,
195 struct cifs_sb_info *cifs_sb);
196 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
197 struct cifs_sb_info *);
198 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
199 extern struct inode *cifs_iget(struct super_block *sb,
200 struct cifs_fattr *fattr);
201
202 int cifs_get_inode_info(struct inode **inode, const char *full_path,
203 struct cifs_open_info_data *data, struct super_block *sb, int xid,
204 const struct cifs_fid *fid);
205 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
206 struct super_block *sb, unsigned int xid);
207 extern int cifs_get_inode_info_unix(struct inode **pinode,
208 const unsigned char *search_path,
209 struct super_block *sb, unsigned int xid);
210 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
211 unsigned int xid, const char *full_path, __u32 dosattr);
212 extern int cifs_rename_pending_delete(const char *full_path,
213 struct dentry *dentry,
214 const unsigned int xid);
215 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
216 struct cifs_fattr *fattr, uint sidtype);
217 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
218 struct cifs_fattr *fattr, struct inode *inode,
219 bool get_mode_from_special_sid,
220 const char *path, const struct cifs_fid *pfid);
221 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
222 kuid_t uid, kgid_t gid);
223 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
224 const char *, u32 *, u32);
225 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
226 const struct cifs_fid *, u32 *, u32);
227 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
228 const char *, int);
229 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
230 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
231 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
232
233 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
234 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
235 unsigned int to_read);
236 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
237 size_t to_read);
238 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
239 struct page *page,
240 unsigned int page_offset,
241 unsigned int to_read);
242 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
243 extern int cifs_match_super(struct super_block *, void *);
244 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
245 extern void cifs_umount(struct cifs_sb_info *);
246 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
247 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
248
249 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
250 __u64 length, __u8 type, __u16 flags,
251 struct cifsLockInfo **conf_lock,
252 int rw_check);
253 extern void cifs_add_pending_open(struct cifs_fid *fid,
254 struct tcon_link *tlink,
255 struct cifs_pending_open *open);
256 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
257 struct tcon_link *tlink,
258 struct cifs_pending_open *open);
259 extern void cifs_del_pending_open(struct cifs_pending_open *open);
260
261 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
262 struct cifs_deferred_close **dclose);
263
264 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
265 struct cifs_deferred_close *dclose);
266
267 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
268
269 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
270
271 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
272
273 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
274 const char *path);
275 extern struct TCP_Server_Info *
276 cifs_get_tcp_session(struct smb3_fs_context *ctx,
277 struct TCP_Server_Info *primary_server);
278 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
279 int from_reconnect);
280 extern void cifs_put_tcon(struct cifs_tcon *tcon);
281
282 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
283 extern void cifs_dfs_release_automount_timer(void);
284 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
285 #define cifs_dfs_release_automount_timer() do { } while (0)
286 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
287
288 void cifs_proc_init(void);
289 void cifs_proc_clean(void);
290
291 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
292 extern void cifs_free_llist(struct list_head *llist);
293 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
294
295 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
296 const struct nls_table *nlsc);
297
298 extern int cifs_negotiate_protocol(const unsigned int xid,
299 struct cifs_ses *ses,
300 struct TCP_Server_Info *server);
301 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
302 struct TCP_Server_Info *server,
303 struct nls_table *nls_info);
304 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
305 extern int CIFSSMBNegotiate(const unsigned int xid,
306 struct cifs_ses *ses,
307 struct TCP_Server_Info *server);
308
309 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
310 const char *tree, struct cifs_tcon *tcon,
311 const struct nls_table *);
312
313 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
314 const char *searchName, struct cifs_sb_info *cifs_sb,
315 __u16 *searchHandle, __u16 search_flags,
316 struct cifs_search_info *psrch_inf,
317 bool msearch);
318
319 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
320 __u16 searchHandle, __u16 search_flags,
321 struct cifs_search_info *psrch_inf);
322
323 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
324 const __u16 search_handle);
325
326 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
327 u16 netfid, FILE_ALL_INFO *pFindData);
328 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
329 const char *search_Name, FILE_ALL_INFO *data,
330 int legacy /* whether to use old info level */,
331 const struct nls_table *nls_codepage, int remap);
332 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
333 const char *search_name, FILE_ALL_INFO *data,
334 const struct nls_table *nls_codepage, int remap);
335
336 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
337 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
338 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
339 struct cifs_tcon *tcon,
340 const unsigned char *searchName,
341 FILE_UNIX_BASIC_INFO *pFindData,
342 const struct nls_table *nls_codepage, int remap);
343
344 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
345 const char *search_name,
346 struct dfs_info3_param **target_nodes,
347 unsigned int *num_of_nodes,
348 const struct nls_table *nls_codepage, int remap);
349
350 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
351 unsigned int *num_of_nodes,
352 struct dfs_info3_param **target_nodes,
353 const struct nls_table *nls_codepage, int remap,
354 const char *searchName, bool is_unicode);
355 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
356 struct cifs_sb_info *cifs_sb,
357 struct smb3_fs_context *ctx);
358 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
359 struct kstatfs *FSData);
360 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
361 struct kstatfs *FSData);
362 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
363 __u64 cap);
364
365 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
366 struct cifs_tcon *tcon);
367 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
368 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
369 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
370 struct kstatfs *FSData);
371
372 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
373 const char *fileName, const FILE_BASIC_INFO *data,
374 const struct nls_table *nls_codepage,
375 struct cifs_sb_info *cifs_sb);
376 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
377 const FILE_BASIC_INFO *data, __u16 fid,
378 __u32 pid_of_opener);
379 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
380 struct cifs_tcon *tcon,
381 bool delete_file, __u16 fid,
382 __u32 pid_of_opener);
383 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
384 const char *file_name, __u64 size,
385 struct cifs_sb_info *cifs_sb, bool set_allocation);
386 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
387 struct cifsFileInfo *cfile, __u64 size,
388 bool set_allocation);
389
390 struct cifs_unix_set_info_args {
391 __u64 ctime;
392 __u64 atime;
393 __u64 mtime;
394 __u64 mode;
395 kuid_t uid;
396 kgid_t gid;
397 dev_t device;
398 };
399
400 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
401 struct cifs_tcon *tcon,
402 const struct cifs_unix_set_info_args *args,
403 u16 fid, u32 pid_of_opener);
404
405 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
406 struct cifs_tcon *tcon, const char *file_name,
407 const struct cifs_unix_set_info_args *args,
408 const struct nls_table *nls_codepage,
409 int remap);
410
411 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
412 umode_t mode, struct cifs_tcon *tcon,
413 const char *name, struct cifs_sb_info *cifs_sb);
414 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
415 const char *name, struct cifs_sb_info *cifs_sb);
416 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
417 const char *name, __u16 type,
418 const struct nls_table *nls_codepage,
419 int remap_special_chars);
420 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
421 const char *name, struct cifs_sb_info *cifs_sb);
422 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
423 const char *from_name, const char *to_name,
424 struct cifs_sb_info *cifs_sb);
425 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
426 int netfid, const char *target_name,
427 const struct nls_table *nls_codepage,
428 int remap_special_chars);
429 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
430 const char *from_name, const char *to_name,
431 struct cifs_sb_info *cifs_sb);
432 extern int CIFSUnixCreateHardLink(const unsigned int xid,
433 struct cifs_tcon *tcon,
434 const char *fromName, const char *toName,
435 const struct nls_table *nls_codepage,
436 int remap_special_chars);
437 extern int CIFSUnixCreateSymLink(const unsigned int xid,
438 struct cifs_tcon *tcon,
439 const char *fromName, const char *toName,
440 const struct nls_table *nls_codepage, int remap);
441 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
442 struct cifs_tcon *tcon,
443 const unsigned char *searchName, char **syminfo,
444 const struct nls_table *nls_codepage, int remap);
445 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
446 __u16 fid, char **symlinkinfo,
447 const struct nls_table *nls_codepage);
448 extern int CIFSSMB_set_compression(const unsigned int xid,
449 struct cifs_tcon *tcon, __u16 fid);
450 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
451 int *oplock, FILE_ALL_INFO *buf);
452 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
453 const char *fileName, const int disposition,
454 const int access_flags, const int omode,
455 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
456 const struct nls_table *nls_codepage, int remap);
457 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
458 u32 posix_flags, __u64 mode, __u16 *netfid,
459 FILE_UNIX_BASIC_INFO *pRetData,
460 __u32 *pOplock, const char *name,
461 const struct nls_table *nls_codepage, int remap);
462 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
463 const int smb_file_id);
464
465 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
466 const int smb_file_id);
467
468 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
469 unsigned int *nbytes, char **buf,
470 int *return_buf_type);
471 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
472 unsigned int *nbytes, const char *buf);
473 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
474 unsigned int *nbytes, struct kvec *iov, const int nvec);
475 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
476 const char *search_name, __u64 *inode_number,
477 const struct nls_table *nls_codepage,
478 int remap);
479
480 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
481 const __u16 netfid, const __u8 lock_type,
482 const __u32 num_unlock, const __u32 num_lock,
483 LOCKING_ANDX_RANGE *buf);
484 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
485 const __u16 netfid, const __u32 netpid, const __u64 len,
486 const __u64 offset, const __u32 numUnlock,
487 const __u32 numLock, const __u8 lockType,
488 const bool waitFlag, const __u8 oplock_level);
489 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
490 const __u16 smb_file_id, const __u32 netpid,
491 const loff_t start_offset, const __u64 len,
492 struct file_lock *, const __u16 lock_type,
493 const bool waitFlag);
494 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
495 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
496 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
497
498 extern struct cifs_ses *sesInfoAlloc(void);
499 extern void sesInfoFree(struct cifs_ses *);
500 extern struct cifs_tcon *tconInfoAlloc(void);
501 extern void tconInfoFree(struct cifs_tcon *);
502
503 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
504 __u32 *pexpected_response_sequence_number);
505 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
506 __u32 *);
507 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
508 extern int cifs_verify_signature(struct smb_rqst *rqst,
509 struct TCP_Server_Info *server,
510 __u32 expected_sequence_number);
511 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
512 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
513 extern int calc_seckey(struct cifs_ses *);
514 extern int generate_smb30signingkey(struct cifs_ses *ses,
515 struct TCP_Server_Info *server);
516 extern int generate_smb311signingkey(struct cifs_ses *ses,
517 struct TCP_Server_Info *server);
518
519 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
520 extern int CIFSSMBCopy(unsigned int xid,
521 struct cifs_tcon *source_tcon,
522 const char *fromName,
523 const __u16 target_tid,
524 const char *toName, const int flags,
525 const struct nls_table *nls_codepage,
526 int remap_special_chars);
527 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
528 const unsigned char *searchName,
529 const unsigned char *ea_name, char *EAData,
530 size_t bufsize, struct cifs_sb_info *cifs_sb);
531 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
532 const char *fileName, const char *ea_name,
533 const void *ea_value, const __u16 ea_value_len,
534 const struct nls_table *nls_codepage,
535 struct cifs_sb_info *cifs_sb);
536 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
537 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
538 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
539 struct cifs_ntsd *, __u32, int);
540 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
541 const unsigned char *searchName,
542 char *acl_inf, const int buflen, const int acl_type,
543 const struct nls_table *nls_codepage, int remap_special_chars);
544 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
545 const unsigned char *fileName,
546 const char *local_acl, const int buflen, const int acl_type,
547 const struct nls_table *nls_codepage, int remap_special_chars);
548 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
549 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
550 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
551 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
552 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
553 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
554 struct cifs_sb_info *cifs_sb,
555 struct cifs_fattr *fattr,
556 const unsigned char *path);
557 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
558 const struct nls_table *codepage);
559
560 extern int
561 cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);
562
563 extern struct TCP_Server_Info *
564 cifs_find_tcp_session(struct smb3_fs_context *ctx);
565
566 extern void cifs_put_smb_ses(struct cifs_ses *ses);
567
568 extern struct cifs_ses *
569 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
570
571 void cifs_readdata_release(struct kref *refcount);
572 int cifs_async_readv(struct cifs_readdata *rdata);
573 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
574
575 int cifs_async_writev(struct cifs_writedata *wdata,
576 void (*release)(struct kref *kref));
577 void cifs_writev_complete(struct work_struct *work);
578 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
579 work_func_t complete);
580 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
581 work_func_t complete);
582 void cifs_writedata_release(struct kref *refcount);
583 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
584 struct cifs_sb_info *cifs_sb,
585 const unsigned char *path, char *pbuf,
586 unsigned int *pbytes_read);
587 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
588 struct cifs_sb_info *cifs_sb,
589 const unsigned char *path, char *pbuf,
590 unsigned int *pbytes_written);
591 int __cifs_calc_signature(struct smb_rqst *rqst,
592 struct TCP_Server_Info *server, char *signature,
593 struct shash_desc *shash);
594 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
595 enum securityEnum);
596 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
597 void cifs_aio_ctx_release(struct kref *refcount);
598 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
599
600 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
601 void cifs_free_hash(struct shash_desc **sdesc);
602
603 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
604 unsigned int *len, unsigned int *offset);
605 struct cifs_chan *
606 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
607 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
608 bool is_server_using_iface(struct TCP_Server_Info *server,
609 struct cifs_server_iface *iface);
610 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
611 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
612
613 unsigned int
614 cifs_ses_get_chan_index(struct cifs_ses *ses,
615 struct TCP_Server_Info *server);
616 void
617 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
618 struct TCP_Server_Info *server);
619 void
620 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
621 struct TCP_Server_Info *server);
622 bool
623 cifs_chan_in_reconnect(struct cifs_ses *ses,
624 struct TCP_Server_Info *server);
625 void
626 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
627 struct TCP_Server_Info *server);
628 void
629 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
630 struct TCP_Server_Info *server);
631 bool
632 cifs_chan_needs_reconnect(struct cifs_ses *ses,
633 struct TCP_Server_Info *server);
634 bool
635 cifs_chan_is_iface_active(struct cifs_ses *ses,
636 struct TCP_Server_Info *server);
637 int
638 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
639 int
640 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
641
642 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
643 int copy_path_name(char *dst, const char *src);
644 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
645 int resp_buftype,
646 struct cifs_search_info *srch_inf);
647
648 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
649 void cifs_put_tcp_super(struct super_block *sb);
650 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
651 char *extract_hostname(const char *unc);
652 char *extract_sharename(const char *unc);
653
654 #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)655 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
656 const char *old_path,
657 const struct nls_table *nls_codepage,
658 struct dfs_info3_param *referral, int remap)
659 {
660 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
661 referral, NULL);
662 }
663
664 int match_target_ip(struct TCP_Server_Info *server,
665 const char *share, size_t share_len,
666 bool *result);
667
668 int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid,
669 struct cifs_tcon *tcon,
670 struct cifs_sb_info *cifs_sb,
671 const char *dfs_link_path);
672 #endif
673
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)674 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
675 {
676 if (cifs_sb && (backup_cred(cifs_sb)))
677 return options | CREATE_OPEN_BACKUP_INTENT;
678 else
679 return options;
680 }
681
682 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
683 void cifs_put_tcon_super(struct super_block *sb);
684
685 #endif /* _CIFSPROTO_H */
686
