summaryrefslogtreecommitdiff
path: root/fs/cifs/cifsproto.h
blob: 83e83d8beabba3aff6813c8c6860a26d0fcde061 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
/* SPDX-License-Identifier: LGPL-2.1 */
/*
 *
 *   Copyright (c) International Business Machines  Corp., 2002,2008
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 */
#ifndef _CIFSPROTO_H
#define _CIFSPROTO_H
#include <linux/nls.h>
#include "trace.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif

struct statfs;
struct smb_rqst;
struct smb3_fs_context;

/*
 *****************************************************************
 * All Prototypes
 *****************************************************************
 */

extern struct smb_hdr *cifs_buf_get(void);
extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
extern void free_rsp_buf(int, void *);
extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
			unsigned int /* length */);
extern unsigned int _get_xid(void);
extern void _free_xid(unsigned int);
#define get_xid()							\
({									\
	unsigned int __xid = _get_xid();				\
	cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n",		\
		 __func__, __xid,					\
		 from_kuid(&init_user_ns, current_fsuid()));		\
	trace_smb3_enter(__xid, __func__);				\
	__xid;								\
})

#define free_xid(curr_xid)						\
do {									\
	_free_xid(curr_xid);						\
	cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n",		\
		 __func__, curr_xid, (int)rc);				\
	if (rc)								\
		trace_smb3_exit_err(curr_xid, __func__, (int)rc);	\
	else								\
		trace_smb3_exit_done(curr_xid, __func__);		\
} while (0)
extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
extern int init_cifs_spnego(void);
extern void exit_cifs_spnego(void);
extern const char *build_path_from_dentry(struct dentry *, void *);
extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
						    void *page, bool prefix);
static inline void *alloc_dentry_path(void)
{
	return __getname();
}

static inline void free_dentry_path(void *page)
{
	if (page)
		__putname(page);
}

extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
				     struct cifs_sb_info *cifs_sb,
				     struct cifs_tcon *tcon,
				     int add_treename);
extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
extern char *cifs_compose_mount_options(const char *sb_mountdata,
		const char *fullpath, const struct dfs_info3_param *ref,
		char **devname);
extern void delete_mid(struct mid_q_entry *mid);
extern void release_mid(struct mid_q_entry *mid);
extern void cifs_wake_up_task(struct mid_q_entry *mid);
extern int cifs_handle_standard(struct TCP_Server_Info *server,
				struct mid_q_entry *mid);
extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
extern int smb3_parse_opt(const char *options, const char *key, char **val);
extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
extern int cifs_call_async(struct TCP_Server_Info *server,
			struct smb_rqst *rqst,
			mid_receive_t *receive, mid_callback_t *callback,
			mid_handle_t *handle, void *cbdata, const int flags,
			const struct cifs_credits *exist_credits);
extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
			  struct TCP_Server_Info *server,
			  struct smb_rqst *rqst, int *resp_buf_type,
			  const int flags, struct kvec *resp_iov);
extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
			      struct TCP_Server_Info *server,
			      const int flags, const int num_rqst,
			      struct smb_rqst *rqst, int *resp_buf_type,
			      struct kvec *resp_iov);
extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
			struct smb_hdr * /* input */ ,
			struct smb_hdr * /* out */ ,
			int * /* bytes returned */ , const int);
extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
			    char *in_buf, int flags);
extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
				struct TCP_Server_Info *,
				struct smb_rqst *);
extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
						struct smb_rqst *);
extern int cifs_check_receive(struct mid_q_entry *mid,
			struct TCP_Server_Info *server, bool log_error);
extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
				 unsigned int size, unsigned int *num,
				 struct cifs_credits *credits);
extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
			struct kvec *, int /* nvec to send */,
			int * /* type of buf returned */, const int flags,
			struct kvec * /* resp vec */);
extern int SendReceiveBlockingLock(const unsigned int xid,
			struct cifs_tcon *ptcon,
			struct smb_hdr *in_buf ,
			struct smb_hdr *out_buf,
			int *bytes_returned);
void
cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
				      bool all_channels);
void
cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
				      bool mark_smb_session);
extern int cifs_reconnect(struct TCP_Server_Info *server,
			  bool mark_smb_session);
extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
extern bool backup_cred(struct cifs_sb_info *);
extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
			    unsigned int bytes_written);
extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
				  int flags,
				  struct cifsFileInfo **ret_file);
extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
				  int flags,
				  struct cifsFileInfo **ret_file);
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
				  struct cifsFileInfo **ret_file);
extern unsigned int smbCalcSize(void *buf);
extern int decode_negTokenInit(unsigned char *security_blob, int length,
			struct TCP_Server_Info *server);
extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
extern int map_smb_to_linux_error(char *buf, bool logErr);
extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
extern void header_assemble(struct smb_hdr *, char /* command */ ,
			    const struct cifs_tcon *, int /* length of
			    fixed section (word count) in two byte units */);
extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
				struct cifs_ses *ses,
				void **request_buf);
extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
				enum securityEnum requested);
extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
			  struct TCP_Server_Info *server,
			  const struct nls_table *nls_cp);
extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec64);
extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
				      int offset);
extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
extern int cifs_get_writer(struct cifsInodeInfo *cinode);
extern void cifs_put_writer(struct cifsInodeInfo *cinode);
extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
extern int cifs_unlock_range(struct cifsFileInfo *cfile,
			     struct file_lock *flock, const unsigned int xid);
extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);

extern void cifs_down_write(struct rw_semaphore *sem);
struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
				       struct tcon_link *tlink, __u32 oplock,
				       const char *symlink_target);
extern int cifs_posix_open(const char *full_path, struct inode **inode,
			   struct super_block *sb, int mode,
			   unsigned int f_flags, __u32 *oplock, __u16 *netfid,
			   unsigned int xid);
void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
				     FILE_UNIX_BASIC_INFO *info,
				     struct cifs_sb_info *cifs_sb);
extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
					struct cifs_sb_info *);
extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
extern struct inode *cifs_iget(struct super_block *sb,
			       struct cifs_fattr *fattr);

int cifs_get_inode_info(struct inode **inode, const char *full_path,
			struct cifs_open_info_data *data, struct super_block *sb, int xid,
			const struct cifs_fid *fid);
extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
			struct super_block *sb, unsigned int xid);
extern int cifs_get_inode_info_unix(struct inode **pinode,
			const unsigned char *search_path,
			struct super_block *sb, unsigned int xid);
extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
			      unsigned int xid, const char *full_path, __u32 dosattr);
extern int cifs_rename_pending_delete(const char *full_path,
				      struct dentry *dentry,
				      const unsigned int xid);
extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
				struct cifs_fattr *fattr, uint sidtype);
extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
			      struct cifs_fattr *fattr, struct inode *inode,
			      bool get_mode_from_special_sid,
			      const char *path, const struct cifs_fid *pfid);
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
					kuid_t uid, kgid_t gid);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
				      const char *, u32 *, u32);
extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
				const struct cifs_fid *, u32 *, u32);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
				const char *, int);
extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);

extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
			         unsigned int to_read);
extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
					size_t to_read);
extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
					struct page *page,
					unsigned int page_offset,
					unsigned int to_read);
extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
extern int cifs_match_super(struct super_block *, void *);
extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
extern void cifs_umount(struct cifs_sb_info *);
extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);

extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
				    __u64 length, __u8 type, __u16 flags,
				    struct cifsLockInfo **conf_lock,
				    int rw_check);
extern void cifs_add_pending_open(struct cifs_fid *fid,
				  struct tcon_link *tlink,
				  struct cifs_pending_open *open);
extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
					 struct tcon_link *tlink,
					 struct cifs_pending_open *open);
extern void cifs_del_pending_open(struct cifs_pending_open *open);

extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
				struct cifs_deferred_close **dclose);

extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
				struct cifs_deferred_close *dclose);

extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);

extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);

extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);

extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
				const char *path);
extern struct TCP_Server_Info *
cifs_get_tcp_session(struct smb3_fs_context *ctx,
		     struct TCP_Server_Info *primary_server);
extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
				 int from_reconnect);
extern void cifs_put_tcon(struct cifs_tcon *tcon);

#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
extern void cifs_dfs_release_automount_timer(void);
#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
#define cifs_dfs_release_automount_timer()	do { } while (0)
#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */

void cifs_proc_init(void);
void cifs_proc_clean(void);

extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
extern void cifs_free_llist(struct list_head *llist);
extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);

extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
			     const struct nls_table *nlsc);

extern int cifs_negotiate_protocol(const unsigned int xid,
				   struct cifs_ses *ses,
				   struct TCP_Server_Info *server);
extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
			      struct TCP_Server_Info *server,
			      struct nls_table *nls_info);
extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
extern int CIFSSMBNegotiate(const unsigned int xid,
			    struct cifs_ses *ses,
			    struct TCP_Server_Info *server);

extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
		    const char *tree, struct cifs_tcon *tcon,
		    const struct nls_table *);

extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
		const char *searchName, struct cifs_sb_info *cifs_sb,
		__u16 *searchHandle, __u16 search_flags,
		struct cifs_search_info *psrch_inf,
		bool msearch);

extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
		__u16 searchHandle, __u16 search_flags,
		struct cifs_search_info *psrch_inf);

extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
			const __u16 search_handle);

extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
			u16 netfid, FILE_ALL_INFO *pFindData);
extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
			    const char *search_Name, FILE_ALL_INFO *data,
			    int legacy /* whether to use old info level */,
			    const struct nls_table *nls_codepage, int remap);
extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
			       const char *search_name, FILE_ALL_INFO *data,
			       const struct nls_table *nls_codepage, int remap);

extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
			struct cifs_tcon *tcon,
			const unsigned char *searchName,
			FILE_UNIX_BASIC_INFO *pFindData,
			const struct nls_table *nls_codepage, int remap);

extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
			   const char *search_name,
			   struct dfs_info3_param **target_nodes,
			   unsigned int *num_of_nodes,
			   const struct nls_table *nls_codepage, int remap);

extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
			       unsigned int *num_of_nodes,
			       struct dfs_info3_param **target_nodes,
			       const struct nls_table *nls_codepage, int remap,
			       const char *searchName, bool is_unicode);
extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
				 struct cifs_sb_info *cifs_sb,
				 struct smb3_fs_context *ctx);
extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
			struct kstatfs *FSData);
extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
			struct kstatfs *FSData);
extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
			__u64 cap);

extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
			struct cifs_tcon *tcon);
extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
			struct kstatfs *FSData);

extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
			const char *fileName, const FILE_BASIC_INFO *data,
			const struct nls_table *nls_codepage,
			struct cifs_sb_info *cifs_sb);
extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
			const FILE_BASIC_INFO *data, __u16 fid,
			__u32 pid_of_opener);
extern int CIFSSMBSetFileDisposition(const unsigned int xid,
				     struct cifs_tcon *tcon,
				     bool delete_file, __u16 fid,
				     __u32 pid_of_opener);
extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
			 const char *file_name, __u64 size,
			 struct cifs_sb_info *cifs_sb, bool set_allocation);
extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
			      struct cifsFileInfo *cfile, __u64 size,
			      bool set_allocation);

struct cifs_unix_set_info_args {
	__u64	ctime;
	__u64	atime;
	__u64	mtime;
	__u64	mode;
	kuid_t	uid;
	kgid_t	gid;
	dev_t	device;
};

extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
				  struct cifs_tcon *tcon,
				  const struct cifs_unix_set_info_args *args,
				  u16 fid, u32 pid_of_opener);

extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
				  struct cifs_tcon *tcon, const char *file_name,
				  const struct cifs_unix_set_info_args *args,
				  const struct nls_table *nls_codepage,
				  int remap);

extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
			umode_t mode, struct cifs_tcon *tcon,
			const char *name, struct cifs_sb_info *cifs_sb);
extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
			const char *name, struct cifs_sb_info *cifs_sb);
extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
			const char *name, __u16 type,
			const struct nls_table *nls_codepage,
			int remap_special_chars);
extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
			  const char *name, struct cifs_sb_info *cifs_sb);
extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
			 const char *from_name, const char *to_name,
			 struct cifs_sb_info *cifs_sb);
extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
				 int netfid, const char *target_name,
				 const struct nls_table *nls_codepage,
				 int remap_special_chars);
extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
			      const char *from_name, const char *to_name,
			      struct cifs_sb_info *cifs_sb);
extern int CIFSUnixCreateHardLink(const unsigned int xid,
			struct cifs_tcon *tcon,
			const char *fromName, const char *toName,
			const struct nls_table *nls_codepage,
			int remap_special_chars);
extern int CIFSUnixCreateSymLink(const unsigned int xid,
			struct cifs_tcon *tcon,
			const char *fromName, const char *toName,
			const struct nls_table *nls_codepage, int remap);
extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
			struct cifs_tcon *tcon,
			const unsigned char *searchName, char **syminfo,
			const struct nls_table *nls_codepage, int remap);
extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
			       __u16 fid, char **symlinkinfo,
			       const struct nls_table *nls_codepage);
extern int CIFSSMB_set_compression(const unsigned int xid,
				   struct cifs_tcon *tcon, __u16 fid);
extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
		     int *oplock, FILE_ALL_INFO *buf);
extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
			const char *fileName, const int disposition,
			const int access_flags, const int omode,
			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
			const struct nls_table *nls_codepage, int remap);
extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
			u32 posix_flags, __u64 mode, __u16 *netfid,
			FILE_UNIX_BASIC_INFO *pRetData,
			__u32 *pOplock, const char *name,
			const struct nls_table *nls_codepage, int remap);
extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
			const int smb_file_id);

extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
			const int smb_file_id);

extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
			unsigned int *nbytes, char **buf,
			int *return_buf_type);
extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
			unsigned int *nbytes, const char *buf);
extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
			unsigned int *nbytes, struct kvec *iov, const int nvec);
extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
				 const char *search_name, __u64 *inode_number,
				 const struct nls_table *nls_codepage,
				 int remap);

extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
		      const __u16 netfid, const __u8 lock_type,
		      const __u32 num_unlock, const __u32 num_lock,
		      LOCKING_ANDX_RANGE *buf);
extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
			const __u16 netfid, const __u32 netpid, const __u64 len,
			const __u64 offset, const __u32 numUnlock,
			const __u32 numLock, const __u8 lockType,
			const bool waitFlag, const __u8 oplock_level);
extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
			const __u16 smb_file_id, const __u32 netpid,
			const loff_t start_offset, const __u64 len,
			struct file_lock *, const __u16 lock_type,
			const bool waitFlag);
extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
extern int CIFSSMBEcho(struct TCP_Server_Info *server);
extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);

extern struct cifs_ses *sesInfoAlloc(void);
extern void sesInfoFree(struct cifs_ses *);
extern struct cifs_tcon *tconInfoAlloc(void);
extern void tconInfoFree(struct cifs_tcon *);

extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
		   __u32 *pexpected_response_sequence_number);
extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
			  __u32 *);
extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
extern int cifs_verify_signature(struct smb_rqst *rqst,
				 struct TCP_Server_Info *server,
				__u32 expected_sequence_number);
extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
extern int calc_seckey(struct cifs_ses *);
extern int generate_smb30signingkey(struct cifs_ses *ses,
				    struct TCP_Server_Info *server);
extern int generate_smb311signingkey(struct cifs_ses *ses,
				     struct TCP_Server_Info *server);

#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
extern int CIFSSMBCopy(unsigned int xid,
			struct cifs_tcon *source_tcon,
			const char *fromName,
			const __u16 target_tid,
			const char *toName, const int flags,
			const struct nls_table *nls_codepage,
			int remap_special_chars);
extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
			const unsigned char *searchName,
			const unsigned char *ea_name, char *EAData,
			size_t bufsize, struct cifs_sb_info *cifs_sb);
extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
		const char *fileName, const char *ea_name,
		const void *ea_value, const __u16 ea_value_len,
		const struct nls_table *nls_codepage,
		struct cifs_sb_info *cifs_sb);
extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
			struct cifs_ntsd *, __u32, int);
extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
		const unsigned char *searchName,
		char *acl_inf, const int buflen, const int acl_type,
		const struct nls_table *nls_codepage, int remap_special_chars);
extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
		const unsigned char *fileName,
		const char *local_acl, const int buflen, const int acl_type,
		const struct nls_table *nls_codepage, int remap_special_chars);
extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
#endif /* CIFS_ALLOW_INSECURE_LEGACY */
extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
			      struct cifs_sb_info *cifs_sb,
			      struct cifs_fattr *fattr,
			      const unsigned char *path);
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
			const struct nls_table *codepage);

extern int
cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);

extern struct TCP_Server_Info *
cifs_find_tcp_session(struct smb3_fs_context *ctx);

extern void cifs_put_smb_ses(struct cifs_ses *ses);

extern struct cifs_ses *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);

void cifs_readdata_release(struct kref *refcount);
int cifs_async_readv(struct cifs_readdata *rdata);
int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);

int cifs_async_writev(struct cifs_writedata *wdata,
		      void (*release)(struct kref *kref));
void cifs_writev_complete(struct work_struct *work);
struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
						work_func_t complete);
struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
						work_func_t complete);
void cifs_writedata_release(struct kref *refcount);
int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
			  struct cifs_sb_info *cifs_sb,
			  const unsigned char *path, char *pbuf,
			  unsigned int *pbytes_read);
int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
			   struct cifs_sb_info *cifs_sb,
			   const unsigned char *path, char *pbuf,
			   unsigned int *pbytes_written);
int __cifs_calc_signature(struct smb_rqst *rqst,
			struct TCP_Server_Info *server, char *signature,
			struct shash_desc *shash);
enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
					enum securityEnum);
struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
void cifs_aio_ctx_release(struct kref *refcount);
int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);

int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
void cifs_free_hash(struct shash_desc **sdesc);

extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
				unsigned int *len, unsigned int *offset);
struct cifs_chan *
cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
bool is_server_using_iface(struct TCP_Server_Info *server,
			   struct cifs_server_iface *iface);
bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);

unsigned int
cifs_ses_get_chan_index(struct cifs_ses *ses,
			struct TCP_Server_Info *server);
void
cifs_chan_set_in_reconnect(struct cifs_ses *ses,
			     struct TCP_Server_Info *server);
void
cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
			       struct TCP_Server_Info *server);
bool
cifs_chan_in_reconnect(struct cifs_ses *ses,
			  struct TCP_Server_Info *server);
void
cifs_chan_set_need_reconnect(struct cifs_ses *ses,
			     struct TCP_Server_Info *server);
void
cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
			       struct TCP_Server_Info *server);
bool
cifs_chan_needs_reconnect(struct cifs_ses *ses,
			  struct TCP_Server_Info *server);
bool
cifs_chan_is_iface_active(struct cifs_ses *ses,
			  struct TCP_Server_Info *server);
int
cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
int
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);

void extract_unc_hostname(const char *unc, const char **h, size_t *len);
int copy_path_name(char *dst, const char *src);
int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
			       int resp_buftype,
			       struct cifs_search_info *srch_inf);

struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
void cifs_put_tcp_super(struct super_block *sb);
int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
char *extract_hostname(const char *unc);
char *extract_sharename(const char *unc);

#ifdef CONFIG_CIFS_DFS_UPCALL
static inline int 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)
{
	return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
			      referral, NULL);
}

int match_target_ip(struct TCP_Server_Info *server,
		    const char *share, size_t share_len,
		    bool *result);

int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid,
				       struct cifs_tcon *tcon,
				       struct cifs_sb_info *cifs_sb,
				       const char *dfs_link_path);
#endif

static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
{
	if (cifs_sb && (backup_cred(cifs_sb)))
		return options | CREATE_OPEN_BACKUP_INTENT;
	else
		return options;
}

struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
void cifs_put_tcon_super(struct super_block *sb);

#endif			/* _CIFSPROTO_H */