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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: LGPL-2.1 */
2/*
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2008
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 */
8#ifndef _CIFSPROTO_H
9#define _CIFSPROTO_H
10#include <linux/nls.h>
11#include <linux/ctype.h>
12#include "trace.h"
13#ifdef CONFIG_CIFS_DFS_UPCALL
14#include "dfs_cache.h"
15#endif
16
17struct statfs;
18struct smb_rqst;
19struct smb3_fs_context;
20
21/*
22 *****************************************************************
23 * All Prototypes
24 *****************************************************************
25 */
26
27extern struct smb_hdr *cifs_buf_get(void);
28extern void cifs_buf_release(void *);
29extern struct smb_hdr *cifs_small_buf_get(void);
30extern void cifs_small_buf_release(void *);
31extern void free_rsp_buf(int, void *);
32extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
33 unsigned int /* length */);
34extern unsigned int _get_xid(void);
35extern void _free_xid(unsigned int);
36#define get_xid() \
37({ \
38 unsigned int __xid = _get_xid(); \
39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
40 __func__, __xid, \
41 from_kuid(&init_user_ns, current_fsuid())); \
42 trace_smb3_enter(__xid, __func__); \
43 __xid; \
44})
45
46#define free_xid(curr_xid) \
47do { \
48 _free_xid(curr_xid); \
49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
50 __func__, curr_xid, (int)rc); \
51 if (rc) \
52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
53 else \
54 trace_smb3_exit_done(curr_xid, __func__); \
55} while (0)
56extern int init_cifs_idmap(void);
57extern void exit_cifs_idmap(void);
58extern int init_cifs_spnego(void);
59extern void exit_cifs_spnego(void);
60extern const char *build_path_from_dentry(struct dentry *, void *);
61char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
62 const char *tree, int tree_len,
63 bool prefix);
64extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
65 void *page, bool prefix);
66static inline void *alloc_dentry_path(void)
67{
68 return __getname();
69}
70
71static inline void free_dentry_path(void *page)
72{
73 if (page)
74 __putname(page);
75}
76
77extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
78 struct cifs_sb_info *cifs_sb,
79 struct cifs_tcon *tcon,
80 int add_treename);
81extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
82char *cifs_build_devname(char *nodename, const char *prepath);
83extern void delete_mid(struct mid_q_entry *mid);
84void __release_mid(struct kref *refcount);
85extern void cifs_wake_up_task(struct mid_q_entry *mid);
86extern int cifs_handle_standard(struct TCP_Server_Info *server,
87 struct mid_q_entry *mid);
88extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
89 char dirsep);
90extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
91extern int smb3_parse_opt(const char *options, const char *key, char **val);
92extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
93extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
94extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
95extern int cifs_call_async(struct TCP_Server_Info *server,
96 struct smb_rqst *rqst,
97 mid_receive_t *receive, mid_callback_t *callback,
98 mid_handle_t *handle, void *cbdata, const int flags,
99 const struct cifs_credits *exist_credits);
100extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
101extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
102 struct TCP_Server_Info *server,
103 struct smb_rqst *rqst, int *resp_buf_type,
104 const int flags, struct kvec *resp_iov);
105extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
106 struct TCP_Server_Info *server,
107 const int flags, const int num_rqst,
108 struct smb_rqst *rqst, int *resp_buf_type,
109 struct kvec *resp_iov);
110extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
111 struct smb_hdr * /* input */ ,
112 struct smb_hdr * /* out */ ,
113 int * /* bytes returned */ , const int);
114extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
115 char *in_buf, int flags);
116extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
117 struct TCP_Server_Info *,
118 struct smb_rqst *);
119extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
120 struct smb_rqst *);
121extern int cifs_check_receive(struct mid_q_entry *mid,
122 struct TCP_Server_Info *server, bool log_error);
123extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
124 unsigned int size, unsigned int *num,
125 struct cifs_credits *credits);
126extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
127 struct kvec *, int /* nvec to send */,
128 int * /* type of buf returned */, const int flags,
129 struct kvec * /* resp vec */);
130extern int SendReceiveBlockingLock(const unsigned int xid,
131 struct cifs_tcon *ptcon,
132 struct smb_hdr *in_buf,
133 struct smb_hdr *out_buf,
134 int *bytes_returned);
135
136void
137cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
138 bool all_channels);
139void
140cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
141 bool mark_smb_session);
142extern int cifs_reconnect(struct TCP_Server_Info *server,
143 bool mark_smb_session);
144extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
145extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
146extern bool backup_cred(struct cifs_sb_info *);
147extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
148extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
149 unsigned int bytes_written);
150extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
151extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
152 int flags,
153 struct cifsFileInfo **ret_file);
154extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
155 int flags,
156 struct cifsFileInfo **ret_file);
157extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
158extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
159 struct cifsFileInfo **ret_file);
160extern unsigned int smbCalcSize(void *buf);
161extern int decode_negTokenInit(unsigned char *security_blob, int length,
162 struct TCP_Server_Info *server);
163extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
164extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
165extern int map_smb_to_linux_error(char *buf, bool logErr);
166extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
167extern void header_assemble(struct smb_hdr *, char /* command */ ,
168 const struct cifs_tcon *, int /* length of
169 fixed section (word count) in two byte units */);
170extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
171 struct cifs_ses *ses,
172 void **request_buf);
173extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
174 enum securityEnum requested);
175extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
176 struct TCP_Server_Info *server,
177 const struct nls_table *nls_cp);
178extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
179extern u64 cifs_UnixTimeToNT(struct timespec64);
180extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
181 int offset);
182extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
183extern int cifs_get_writer(struct cifsInodeInfo *cinode);
184extern void cifs_put_writer(struct cifsInodeInfo *cinode);
185extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
186extern int cifs_unlock_range(struct cifsFileInfo *cfile,
187 struct file_lock *flock, const unsigned int xid);
188extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
189
190extern void cifs_down_write(struct rw_semaphore *sem);
191struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
192 struct tcon_link *tlink, __u32 oplock,
193 const char *symlink_target);
194extern int cifs_posix_open(const char *full_path, struct inode **inode,
195 struct super_block *sb, int mode,
196 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
197 unsigned int xid);
198void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
199extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
200 FILE_UNIX_BASIC_INFO *info,
201 struct cifs_sb_info *cifs_sb);
202extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
203 struct cifs_sb_info *);
204extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
205extern struct inode *cifs_iget(struct super_block *sb,
206 struct cifs_fattr *fattr);
207
208int cifs_get_inode_info(struct inode **inode, const char *full_path,
209 struct cifs_open_info_data *data, struct super_block *sb, int xid,
210 const struct cifs_fid *fid);
211bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
212 struct cifs_fattr *fattr,
213 struct cifs_open_info_data *data);
214extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
215 struct super_block *sb, unsigned int xid);
216extern int cifs_get_inode_info_unix(struct inode **pinode,
217 const unsigned char *search_path,
218 struct super_block *sb, unsigned int xid);
219extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
220 unsigned int xid, const char *full_path, __u32 dosattr);
221extern int cifs_rename_pending_delete(const char *full_path,
222 struct dentry *dentry,
223 const unsigned int xid);
224extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
225 struct cifs_fattr *fattr, uint sidtype);
226extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
227 struct cifs_fattr *fattr, struct inode *inode,
228 bool get_mode_from_special_sid,
229 const char *path, const struct cifs_fid *pfid);
230extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
231 kuid_t uid, kgid_t gid);
232extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
233 const char *, u32 *, u32);
234extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
235 const struct cifs_fid *, u32 *, u32);
236extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
237 struct dentry *dentry, int type);
238extern int cifs_set_acl(struct mnt_idmap *idmap,
239 struct dentry *dentry, struct posix_acl *acl, int type);
240extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
241 const char *, int);
242extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
243extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
244extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
245
246extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
247extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
248 unsigned int to_read);
249extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
250 size_t to_read);
251extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
252 struct page *page,
253 unsigned int page_offset,
254 unsigned int to_read);
255int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
256 struct iov_iter *iter,
257 unsigned int to_read);
258extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
259void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
260int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
261int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
262int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
263extern int cifs_match_super(struct super_block *, void *);
264extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
265extern void cifs_umount(struct cifs_sb_info *);
266extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
267extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
268
269extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
270 __u64 length, __u8 type, __u16 flags,
271 struct cifsLockInfo **conf_lock,
272 int rw_check);
273extern void cifs_add_pending_open(struct cifs_fid *fid,
274 struct tcon_link *tlink,
275 struct cifs_pending_open *open);
276extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
277 struct tcon_link *tlink,
278 struct cifs_pending_open *open);
279extern void cifs_del_pending_open(struct cifs_pending_open *open);
280
281extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
282 struct cifs_deferred_close **dclose);
283
284extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
285 struct cifs_deferred_close *dclose);
286
287extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
288
289extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
290
291extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
292
293extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
294 const char *path);
295extern struct TCP_Server_Info *
296cifs_get_tcp_session(struct smb3_fs_context *ctx,
297 struct TCP_Server_Info *primary_server);
298extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
299 int from_reconnect);
300extern void cifs_put_tcon(struct cifs_tcon *tcon);
301
302extern void cifs_release_automount_timer(void);
303
304void cifs_proc_init(void);
305void cifs_proc_clean(void);
306
307extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
308extern void cifs_free_llist(struct list_head *llist);
309extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
310
311extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
312 const struct nls_table *nlsc);
313
314extern int cifs_negotiate_protocol(const unsigned int xid,
315 struct cifs_ses *ses,
316 struct TCP_Server_Info *server);
317extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
318 struct TCP_Server_Info *server,
319 struct nls_table *nls_info);
320extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
321extern int CIFSSMBNegotiate(const unsigned int xid,
322 struct cifs_ses *ses,
323 struct TCP_Server_Info *server);
324
325extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
326 const char *tree, struct cifs_tcon *tcon,
327 const struct nls_table *);
328
329extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
330 const char *searchName, struct cifs_sb_info *cifs_sb,
331 __u16 *searchHandle, __u16 search_flags,
332 struct cifs_search_info *psrch_inf,
333 bool msearch);
334
335extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
336 __u16 searchHandle, __u16 search_flags,
337 struct cifs_search_info *psrch_inf);
338
339extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
340 const __u16 search_handle);
341
342extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
343 u16 netfid, FILE_ALL_INFO *pFindData);
344extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
345 const char *search_Name, FILE_ALL_INFO *data,
346 int legacy /* whether to use old info level */,
347 const struct nls_table *nls_codepage, int remap);
348extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
349 const char *search_name, FILE_ALL_INFO *data,
350 const struct nls_table *nls_codepage, int remap);
351
352extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
353 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
354extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
355 struct cifs_tcon *tcon,
356 const unsigned char *searchName,
357 FILE_UNIX_BASIC_INFO *pFindData,
358 const struct nls_table *nls_codepage, int remap);
359
360extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
361 const char *search_name,
362 struct dfs_info3_param **target_nodes,
363 unsigned int *num_of_nodes,
364 const struct nls_table *nls_codepage, int remap);
365
366extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
367 unsigned int *num_of_nodes,
368 struct dfs_info3_param **target_nodes,
369 const struct nls_table *nls_codepage, int remap,
370 const char *searchName, bool is_unicode);
371extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
372 struct cifs_sb_info *cifs_sb,
373 struct smb3_fs_context *ctx);
374extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
375 struct kstatfs *FSData);
376extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
377 struct kstatfs *FSData);
378extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
379 __u64 cap);
380
381extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
382 struct cifs_tcon *tcon);
383extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
384extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
385extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
386 struct kstatfs *FSData);
387
388extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
389 const char *fileName, const FILE_BASIC_INFO *data,
390 const struct nls_table *nls_codepage,
391 struct cifs_sb_info *cifs_sb);
392extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
393 const FILE_BASIC_INFO *data, __u16 fid,
394 __u32 pid_of_opener);
395extern int CIFSSMBSetFileDisposition(const unsigned int xid,
396 struct cifs_tcon *tcon,
397 bool delete_file, __u16 fid,
398 __u32 pid_of_opener);
399extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
400 const char *file_name, __u64 size,
401 struct cifs_sb_info *cifs_sb, bool set_allocation);
402extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
403 struct cifsFileInfo *cfile, __u64 size,
404 bool set_allocation);
405
406struct cifs_unix_set_info_args {
407 __u64 ctime;
408 __u64 atime;
409 __u64 mtime;
410 __u64 mode;
411 kuid_t uid;
412 kgid_t gid;
413 dev_t device;
414};
415
416extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
417 struct cifs_tcon *tcon,
418 const struct cifs_unix_set_info_args *args,
419 u16 fid, u32 pid_of_opener);
420
421extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
422 struct cifs_tcon *tcon, const char *file_name,
423 const struct cifs_unix_set_info_args *args,
424 const struct nls_table *nls_codepage,
425 int remap);
426
427extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
428 umode_t mode, struct cifs_tcon *tcon,
429 const char *name, struct cifs_sb_info *cifs_sb);
430extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
431 const char *name, struct cifs_sb_info *cifs_sb);
432extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
433 const char *name, __u16 type,
434 const struct nls_table *nls_codepage,
435 int remap_special_chars);
436extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
437 const char *name, struct cifs_sb_info *cifs_sb);
438extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
439 const char *from_name, const char *to_name,
440 struct cifs_sb_info *cifs_sb);
441extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
442 int netfid, const char *target_name,
443 const struct nls_table *nls_codepage,
444 int remap_special_chars);
445extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
446 const char *from_name, const char *to_name,
447 struct cifs_sb_info *cifs_sb);
448extern int CIFSUnixCreateHardLink(const unsigned int xid,
449 struct cifs_tcon *tcon,
450 const char *fromName, const char *toName,
451 const struct nls_table *nls_codepage,
452 int remap_special_chars);
453extern int CIFSUnixCreateSymLink(const unsigned int xid,
454 struct cifs_tcon *tcon,
455 const char *fromName, const char *toName,
456 const struct nls_table *nls_codepage, int remap);
457extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
458 struct cifs_tcon *tcon,
459 const unsigned char *searchName, char **syminfo,
460 const struct nls_table *nls_codepage, int remap);
461extern int cifs_query_reparse_point(const unsigned int xid,
462 struct cifs_tcon *tcon,
463 struct cifs_sb_info *cifs_sb,
464 const char *full_path,
465 u32 *tag, struct kvec *rsp,
466 int *rsp_buftype);
467extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
468 __u16 fid, char **symlinkinfo,
469 const struct nls_table *nls_codepage);
470extern int CIFSSMB_set_compression(const unsigned int xid,
471 struct cifs_tcon *tcon, __u16 fid);
472extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
473 int *oplock, FILE_ALL_INFO *buf);
474extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
475 const char *fileName, const int disposition,
476 const int access_flags, const int omode,
477 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
478 const struct nls_table *nls_codepage, int remap);
479extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
480 u32 posix_flags, __u64 mode, __u16 *netfid,
481 FILE_UNIX_BASIC_INFO *pRetData,
482 __u32 *pOplock, const char *name,
483 const struct nls_table *nls_codepage, int remap);
484extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
485 const int smb_file_id);
486
487extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
488 const int smb_file_id);
489
490extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
491 unsigned int *nbytes, char **buf,
492 int *return_buf_type);
493extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
494 unsigned int *nbytes, const char *buf);
495extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
496 unsigned int *nbytes, struct kvec *iov, const int nvec);
497extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
498 const char *search_name, __u64 *inode_number,
499 const struct nls_table *nls_codepage,
500 int remap);
501
502extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
503 const __u16 netfid, const __u8 lock_type,
504 const __u32 num_unlock, const __u32 num_lock,
505 LOCKING_ANDX_RANGE *buf);
506extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
507 const __u16 netfid, const __u32 netpid, const __u64 len,
508 const __u64 offset, const __u32 numUnlock,
509 const __u32 numLock, const __u8 lockType,
510 const bool waitFlag, const __u8 oplock_level);
511extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
512 const __u16 smb_file_id, const __u32 netpid,
513 const loff_t start_offset, const __u64 len,
514 struct file_lock *, const __u16 lock_type,
515 const bool waitFlag);
516extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
517extern int CIFSSMBEcho(struct TCP_Server_Info *server);
518extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
519
520extern struct cifs_ses *sesInfoAlloc(void);
521extern void sesInfoFree(struct cifs_ses *);
522extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled);
523extern void tconInfoFree(struct cifs_tcon *);
524
525extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
526 __u32 *pexpected_response_sequence_number);
527extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
528 __u32 *);
529extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
530extern int cifs_verify_signature(struct smb_rqst *rqst,
531 struct TCP_Server_Info *server,
532 __u32 expected_sequence_number);
533extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
534extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
535extern int calc_seckey(struct cifs_ses *);
536extern int generate_smb30signingkey(struct cifs_ses *ses,
537 struct TCP_Server_Info *server);
538extern int generate_smb311signingkey(struct cifs_ses *ses,
539 struct TCP_Server_Info *server);
540
541#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
542extern int CIFSSMBCopy(unsigned int xid,
543 struct cifs_tcon *source_tcon,
544 const char *fromName,
545 const __u16 target_tid,
546 const char *toName, const int flags,
547 const struct nls_table *nls_codepage,
548 int remap_special_chars);
549extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
550 const unsigned char *searchName,
551 const unsigned char *ea_name, char *EAData,
552 size_t bufsize, struct cifs_sb_info *cifs_sb);
553extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
554 const char *fileName, const char *ea_name,
555 const void *ea_value, const __u16 ea_value_len,
556 const struct nls_table *nls_codepage,
557 struct cifs_sb_info *cifs_sb);
558extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
559 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
560extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
561 struct cifs_ntsd *, __u32, int);
562extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
563 const unsigned char *searchName,
564 struct posix_acl **acl, const int acl_type,
565 const struct nls_table *nls_codepage, int remap);
566extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
567 const unsigned char *fileName,
568 const struct posix_acl *acl, const int acl_type,
569 const struct nls_table *nls_codepage, int remap);
570extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
571 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
572#endif /* CIFS_ALLOW_INSECURE_LEGACY */
573extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
574extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
575extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
576 struct cifs_sb_info *cifs_sb,
577 struct cifs_fattr *fattr,
578 const unsigned char *path);
579extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
580 const struct nls_table *codepage);
581
582extern struct TCP_Server_Info *
583cifs_find_tcp_session(struct smb3_fs_context *ctx);
584
585void __cifs_put_smb_ses(struct cifs_ses *ses);
586
587extern struct cifs_ses *
588cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
589
590void cifs_readdata_release(struct kref *refcount);
591int cifs_async_readv(struct cifs_readdata *rdata);
592int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
593
594int cifs_async_writev(struct cifs_writedata *wdata,
595 void (*release)(struct kref *kref));
596void cifs_writev_complete(struct work_struct *work);
597struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
598void cifs_writedata_release(struct kref *refcount);
599int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
600 struct cifs_sb_info *cifs_sb,
601 const unsigned char *path, char *pbuf,
602 unsigned int *pbytes_read);
603int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
604 struct cifs_sb_info *cifs_sb,
605 const unsigned char *path, char *pbuf,
606 unsigned int *pbytes_written);
607int __cifs_calc_signature(struct smb_rqst *rqst,
608 struct TCP_Server_Info *server, char *signature,
609 struct shash_desc *shash);
610enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
611 enum securityEnum);
612struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
613void cifs_aio_ctx_release(struct kref *refcount);
614
615int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
616void cifs_free_hash(struct shash_desc **sdesc);
617
618struct cifs_chan *
619cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
620int cifs_try_adding_channels(struct cifs_ses *ses);
621bool is_server_using_iface(struct TCP_Server_Info *server,
622 struct cifs_server_iface *iface);
623bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
624void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
625
626int
627cifs_ses_get_chan_index(struct cifs_ses *ses,
628 struct TCP_Server_Info *server);
629void
630cifs_chan_set_in_reconnect(struct cifs_ses *ses,
631 struct TCP_Server_Info *server);
632void
633cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
634 struct TCP_Server_Info *server);
635bool
636cifs_chan_in_reconnect(struct cifs_ses *ses,
637 struct TCP_Server_Info *server);
638void
639cifs_chan_set_need_reconnect(struct cifs_ses *ses,
640 struct TCP_Server_Info *server);
641void
642cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
643 struct TCP_Server_Info *server);
644bool
645cifs_chan_needs_reconnect(struct cifs_ses *ses,
646 struct TCP_Server_Info *server);
647bool
648cifs_chan_is_iface_active(struct cifs_ses *ses,
649 struct TCP_Server_Info *server);
650void
651cifs_disable_secondary_channels(struct cifs_ses *ses);
652int
653cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
654int
655SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
656
657void extract_unc_hostname(const char *unc, const char **h, size_t *len);
658int copy_path_name(char *dst, const char *src);
659int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
660 int resp_buftype,
661 struct cifs_search_info *srch_inf);
662
663struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
664void cifs_put_tcp_super(struct super_block *sb);
665int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
666char *extract_hostname(const char *unc);
667char *extract_sharename(const char *unc);
668int parse_reparse_point(struct reparse_data_buffer *buf,
669 u32 plen, struct cifs_sb_info *cifs_sb,
670 bool unicode, struct cifs_open_info_data *data);
671int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
672 struct dentry *dentry, struct cifs_tcon *tcon,
673 const char *full_path, umode_t mode, dev_t dev);
674
675#ifdef CONFIG_CIFS_DFS_UPCALL
676static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
677 const char *old_path,
678 const struct nls_table *nls_codepage,
679 struct dfs_info3_param *referral, int remap)
680{
681 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
682 referral, NULL);
683}
684
685int match_target_ip(struct TCP_Server_Info *server,
686 const char *share, size_t share_len,
687 bool *result);
688int cifs_inval_name_dfs_link_error(const unsigned int xid,
689 struct cifs_tcon *tcon,
690 struct cifs_sb_info *cifs_sb,
691 const char *full_path,
692 bool *islink);
693#else
694static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
695 struct cifs_tcon *tcon,
696 struct cifs_sb_info *cifs_sb,
697 const char *full_path,
698 bool *islink)
699{
700 *islink = false;
701 return 0;
702}
703#endif
704
705static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
706{
707 if (cifs_sb && (backup_cred(cifs_sb)))
708 return options | CREATE_OPEN_BACKUP_INTENT;
709 else
710 return options;
711}
712
713struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
714void cifs_put_tcon_super(struct super_block *sb);
715int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
716
717/* Put references of @ses and @ses->dfs_root_ses */
718static inline void cifs_put_smb_ses(struct cifs_ses *ses)
719{
720 struct cifs_ses *rses = ses->dfs_root_ses;
721
722 __cifs_put_smb_ses(ses);
723 if (rses)
724 __cifs_put_smb_ses(rses);
725}
726
727/* Get an active reference of @ses and @ses->dfs_root_ses.
728 *
729 * NOTE: make sure to call this function when incrementing reference count of
730 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
731 * will also get its reference count incremented.
732 *
733 * cifs_put_smb_ses() will put both references, so call it when you're done.
734 */
735static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
736{
737 lockdep_assert_held(&cifs_tcp_ses_lock);
738
739 ses->ses_count++;
740 if (ses->dfs_root_ses)
741 ses->dfs_root_ses->ses_count++;
742}
743
744static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
745{
746 if (strlen(s1) != strlen(s2))
747 return false;
748 for (; *s1; s1++, s2++) {
749 if (*s1 == '/' || *s1 == '\\') {
750 if (*s2 != '/' && *s2 != '\\')
751 return false;
752 } else if (tolower(*s1) != tolower(*s2))
753 return false;
754 }
755 return true;
756}
757
758static inline void release_mid(struct mid_q_entry *mid)
759{
760 kref_put(&mid->refcount, __release_mid);
761}
762
763#endif /* _CIFSPROTO_H */