1 /* SPDX-License-Identifier: LGPL-2.1 */
2 /*
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2008
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 */
8 #ifndef _CIFSPROTO_H
9 #define _CIFSPROTO_H
10 #include <linux/nls.h>
11 #include <linux/ctype.h>
12 #include "trace.h"
13 #ifdef CONFIG_CIFS_DFS_UPCALL
14 #include "dfs_cache.h"
15 #endif
16
17 struct statfs;
18 struct smb_rqst;
19 struct smb3_fs_context;
20
21 /*
22 *****************************************************************
23 * All Prototypes
24 *****************************************************************
25 */
26
27 extern struct smb_hdr *cifs_buf_get(void);
28 extern void cifs_buf_release(void *);
29 extern struct smb_hdr *cifs_small_buf_get(void);
30 extern void cifs_small_buf_release(void *);
31 extern void free_rsp_buf(int, void *);
32 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
33 unsigned int /* length */);
34 extern unsigned int _get_xid(void);
35 extern void _free_xid(unsigned int);
36 #define get_xid() \
37 ({ \
38 unsigned int __xid = _get_xid(); \
39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
40 __func__, __xid, \
41 from_kuid(&init_user_ns, current_fsuid())); \
42 trace_smb3_enter(__xid, __func__); \
43 __xid; \
44 })
45
46 #define free_xid(curr_xid) \
47 do { \
48 _free_xid(curr_xid); \
49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
50 __func__, curr_xid, (int)rc); \
51 if (rc) \
52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
53 else \
54 trace_smb3_exit_done(curr_xid, __func__); \
55 } while (0)
56 extern int init_cifs_idmap(void);
57 extern void exit_cifs_idmap(void);
58 extern int init_cifs_spnego(void);
59 extern void exit_cifs_spnego(void);
60 extern const char *build_path_from_dentry(struct dentry *, void *);
61 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
62 const char *tree, int tree_len,
63 bool prefix);
64 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
65 void *page, bool prefix);
alloc_dentry_path(void)66 static inline void *alloc_dentry_path(void)
67 {
68 return __getname();
69 }
70
free_dentry_path(void * page)71 static inline void free_dentry_path(void *page)
72 {
73 if (page)
74 __putname(page);
75 }
76
77 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
78 struct cifs_sb_info *cifs_sb,
79 struct cifs_tcon *tcon,
80 int add_treename);
81 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
82 char *cifs_build_devname(char *nodename, const char *prepath);
83 extern void delete_mid(struct mid_q_entry *mid);
84 void __release_mid(struct kref *refcount);
85 extern void cifs_wake_up_task(struct mid_q_entry *mid);
86 extern int cifs_handle_standard(struct TCP_Server_Info *server,
87 struct mid_q_entry *mid);
88 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
89 char dirsep);
90 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
91 extern int smb3_parse_opt(const char *options, const char *key, char **val);
92 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
93 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
94 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
95 extern int cifs_call_async(struct TCP_Server_Info *server,
96 struct smb_rqst *rqst,
97 mid_receive_t *receive, mid_callback_t *callback,
98 mid_handle_t *handle, void *cbdata, const int flags,
99 const struct cifs_credits *exist_credits);
100 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
101 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
102 struct TCP_Server_Info *server,
103 struct smb_rqst *rqst, int *resp_buf_type,
104 const int flags, struct kvec *resp_iov);
105 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
106 struct TCP_Server_Info *server,
107 const int flags, const int num_rqst,
108 struct smb_rqst *rqst, int *resp_buf_type,
109 struct kvec *resp_iov);
110 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
111 struct smb_hdr * /* input */ ,
112 struct smb_hdr * /* out */ ,
113 int * /* bytes returned */ , const int);
114 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
115 char *in_buf, int flags);
116 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
117 struct TCP_Server_Info *,
118 struct smb_rqst *);
119 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
120 struct smb_rqst *);
121 extern int cifs_check_receive(struct mid_q_entry *mid,
122 struct TCP_Server_Info *server, bool log_error);
123 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
124 unsigned int size, unsigned int *num,
125 struct cifs_credits *credits);
126 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
127 struct kvec *, int /* nvec to send */,
128 int * /* type of buf returned */, const int flags,
129 struct kvec * /* resp vec */);
130 extern int SendReceiveBlockingLock(const unsigned int xid,
131 struct cifs_tcon *ptcon,
132 struct smb_hdr *in_buf,
133 struct smb_hdr *out_buf,
134 int *bytes_returned);
135
136 void
137 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
138 bool all_channels);
139 void
140 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
141 bool mark_smb_session);
142 extern int cifs_reconnect(struct TCP_Server_Info *server,
143 bool mark_smb_session);
144 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
145 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
146 extern bool backup_cred(struct cifs_sb_info *);
147 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
148 bool from_readdir);
149 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
150 unsigned int bytes_written);
151 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
152 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
153 int flags,
154 struct cifsFileInfo **ret_file);
155 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
156 int flags,
157 struct cifsFileInfo **ret_file);
158 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
159 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
160 struct cifsFileInfo **ret_file);
161 extern unsigned int smbCalcSize(void *buf);
162 extern int decode_negTokenInit(unsigned char *security_blob, int length,
163 struct TCP_Server_Info *server);
164 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
165 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
166 extern int map_smb_to_linux_error(char *buf, bool logErr);
167 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
168 extern void header_assemble(struct smb_hdr *, char /* command */ ,
169 const struct cifs_tcon *, int /* length of
170 fixed section (word count) in two byte units */);
171 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
172 struct cifs_ses *ses,
173 void **request_buf);
174 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
175 enum securityEnum requested);
176 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
177 struct TCP_Server_Info *server,
178 const struct nls_table *nls_cp);
179 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
180 extern u64 cifs_UnixTimeToNT(struct timespec64);
181 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
182 int offset);
183 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
184 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
185 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
186 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
187 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
188 struct file_lock *flock, const unsigned int xid);
189 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
190
191 extern void cifs_down_write(struct rw_semaphore *sem);
192 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
193 struct tcon_link *tlink, __u32 oplock,
194 const char *symlink_target);
195 extern int cifs_posix_open(const char *full_path, struct inode **inode,
196 struct super_block *sb, int mode,
197 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
198 unsigned int xid);
199 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
200 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
201 FILE_UNIX_BASIC_INFO *info,
202 struct cifs_sb_info *cifs_sb);
203 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
204 struct cifs_sb_info *);
205 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
206 bool from_readdir);
207 extern struct inode *cifs_iget(struct super_block *sb,
208 struct cifs_fattr *fattr);
209
210 int cifs_get_inode_info(struct inode **inode, const char *full_path,
211 struct cifs_open_info_data *data, struct super_block *sb, int xid,
212 const struct cifs_fid *fid);
213 extern int smb311_posix_get_inode_info(struct inode **inode,
214 const char *full_path,
215 struct cifs_open_info_data *data,
216 struct super_block *sb,
217 const unsigned int xid);
218 extern int cifs_get_inode_info_unix(struct inode **pinode,
219 const unsigned char *search_path,
220 struct super_block *sb, unsigned int xid);
221 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
222 unsigned int xid, const char *full_path, __u32 dosattr);
223 extern int cifs_rename_pending_delete(const char *full_path,
224 struct dentry *dentry,
225 const unsigned int xid);
226 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
227 struct cifs_fattr *fattr, uint sidtype);
228 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
229 struct cifs_fattr *fattr, struct inode *inode,
230 bool get_mode_from_special_sid,
231 const char *path, const struct cifs_fid *pfid);
232 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
233 kuid_t uid, kgid_t gid);
234 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
235 const char *, u32 *, u32);
236 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
237 const struct cifs_fid *, u32 *, u32);
238 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
239 struct dentry *dentry, int type);
240 extern int cifs_set_acl(struct mnt_idmap *idmap,
241 struct dentry *dentry, struct posix_acl *acl, int type);
242 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
243 const char *, int);
244 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
245 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
246 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
247
248 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
249 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
250 unsigned int to_read);
251 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
252 size_t to_read);
253 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
254 struct page *page,
255 unsigned int page_offset,
256 unsigned int to_read);
257 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
258 struct iov_iter *iter,
259 unsigned int to_read);
260 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
261 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
262 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
263 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
264 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
265 extern int cifs_match_super(struct super_block *, void *);
266 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
267 extern void cifs_umount(struct cifs_sb_info *);
268 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
269 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
270
271 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
272 __u64 length, __u8 type, __u16 flags,
273 struct cifsLockInfo **conf_lock,
274 int rw_check);
275 extern void cifs_add_pending_open(struct cifs_fid *fid,
276 struct tcon_link *tlink,
277 struct cifs_pending_open *open);
278 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
279 struct tcon_link *tlink,
280 struct cifs_pending_open *open);
281 extern void cifs_del_pending_open(struct cifs_pending_open *open);
282
283 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
284 struct cifs_deferred_close **dclose);
285
286 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
287 struct cifs_deferred_close *dclose);
288
289 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
290
291 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
292
293 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
294
295 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
296 const char *path);
297
298 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
299 const char *path);
300
301 extern struct TCP_Server_Info *
302 cifs_get_tcp_session(struct smb3_fs_context *ctx,
303 struct TCP_Server_Info *primary_server);
304 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
305 int from_reconnect);
306 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
307
308 extern void cifs_release_automount_timer(void);
309
310 void cifs_proc_init(void);
311 void cifs_proc_clean(void);
312
313 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
314 extern void cifs_free_llist(struct list_head *llist);
315 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
316
317 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
318 const struct nls_table *nlsc);
319
320 extern int cifs_negotiate_protocol(const unsigned int xid,
321 struct cifs_ses *ses,
322 struct TCP_Server_Info *server);
323 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
324 struct TCP_Server_Info *server,
325 struct nls_table *nls_info);
326 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
327 extern int CIFSSMBNegotiate(const unsigned int xid,
328 struct cifs_ses *ses,
329 struct TCP_Server_Info *server);
330
331 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
332 const char *tree, struct cifs_tcon *tcon,
333 const struct nls_table *);
334
335 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
336 const char *searchName, struct cifs_sb_info *cifs_sb,
337 __u16 *searchHandle, __u16 search_flags,
338 struct cifs_search_info *psrch_inf,
339 bool msearch);
340
341 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
342 __u16 searchHandle, __u16 search_flags,
343 struct cifs_search_info *psrch_inf);
344
345 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
346 const __u16 search_handle);
347
348 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
349 u16 netfid, FILE_ALL_INFO *pFindData);
350 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 const char *search_Name, FILE_ALL_INFO *data,
352 int legacy /* whether to use old info level */,
353 const struct nls_table *nls_codepage, int remap);
354 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
355 const char *search_name, FILE_ALL_INFO *data,
356 const struct nls_table *nls_codepage, int remap);
357
358 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
359 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
360 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
361 struct cifs_tcon *tcon,
362 const unsigned char *searchName,
363 FILE_UNIX_BASIC_INFO *pFindData,
364 const struct nls_table *nls_codepage, int remap);
365
366 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
367 const char *search_name,
368 struct dfs_info3_param **target_nodes,
369 unsigned int *num_of_nodes,
370 const struct nls_table *nls_codepage, int remap);
371
372 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
373 unsigned int *num_of_nodes,
374 struct dfs_info3_param **target_nodes,
375 const struct nls_table *nls_codepage, int remap,
376 const char *searchName, bool is_unicode);
377 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
378 struct cifs_sb_info *cifs_sb,
379 struct smb3_fs_context *ctx);
380 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
381 struct kstatfs *FSData);
382 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
383 struct kstatfs *FSData);
384 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
385 __u64 cap);
386
387 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
388 struct cifs_tcon *tcon);
389 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
390 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
391 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
392 struct kstatfs *FSData);
393
394 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
395 const char *fileName, const FILE_BASIC_INFO *data,
396 const struct nls_table *nls_codepage,
397 struct cifs_sb_info *cifs_sb);
398 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
399 const FILE_BASIC_INFO *data, __u16 fid,
400 __u32 pid_of_opener);
401 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
402 struct cifs_tcon *tcon,
403 bool delete_file, __u16 fid,
404 __u32 pid_of_opener);
405 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
406 const char *file_name, __u64 size,
407 struct cifs_sb_info *cifs_sb, bool set_allocation,
408 struct dentry *dentry);
409 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
410 struct cifsFileInfo *cfile, __u64 size,
411 bool set_allocation);
412
413 struct cifs_unix_set_info_args {
414 __u64 ctime;
415 __u64 atime;
416 __u64 mtime;
417 __u64 mode;
418 kuid_t uid;
419 kgid_t gid;
420 dev_t device;
421 };
422
423 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
424 struct cifs_tcon *tcon,
425 const struct cifs_unix_set_info_args *args,
426 u16 fid, u32 pid_of_opener);
427
428 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
429 struct cifs_tcon *tcon, const char *file_name,
430 const struct cifs_unix_set_info_args *args,
431 const struct nls_table *nls_codepage,
432 int remap);
433
434 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
435 umode_t mode, struct cifs_tcon *tcon,
436 const char *name, struct cifs_sb_info *cifs_sb);
437 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
438 const char *name, struct cifs_sb_info *cifs_sb);
439 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
440 const char *name, __u16 type,
441 const struct nls_table *nls_codepage,
442 int remap_special_chars);
443 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
444 const char *name, struct cifs_sb_info *cifs_sb,
445 struct dentry *dentry);
446 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
447 struct dentry *source_dentry,
448 const char *from_name, const char *to_name,
449 struct cifs_sb_info *cifs_sb);
450 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
451 int netfid, const char *target_name,
452 const struct nls_table *nls_codepage,
453 int remap_special_chars);
454 int CIFSCreateHardLink(const unsigned int xid,
455 struct cifs_tcon *tcon,
456 struct dentry *source_dentry,
457 const char *from_name, const char *to_name,
458 struct cifs_sb_info *cifs_sb);
459 extern int CIFSUnixCreateHardLink(const unsigned int xid,
460 struct cifs_tcon *tcon,
461 const char *fromName, const char *toName,
462 const struct nls_table *nls_codepage,
463 int remap_special_chars);
464 extern int CIFSUnixCreateSymLink(const unsigned int xid,
465 struct cifs_tcon *tcon,
466 const char *fromName, const char *toName,
467 const struct nls_table *nls_codepage, int remap);
468 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
469 struct cifs_tcon *tcon,
470 const unsigned char *searchName, char **syminfo,
471 const struct nls_table *nls_codepage, int remap);
472 extern int cifs_query_reparse_point(const unsigned int xid,
473 struct cifs_tcon *tcon,
474 struct cifs_sb_info *cifs_sb,
475 const char *full_path,
476 u32 *tag, struct kvec *rsp,
477 int *rsp_buftype);
478 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
479 __u16 fid, char **symlinkinfo,
480 const struct nls_table *nls_codepage);
481 extern int CIFSSMB_set_compression(const unsigned int xid,
482 struct cifs_tcon *tcon, __u16 fid);
483 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
484 int *oplock, FILE_ALL_INFO *buf);
485 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
486 const char *fileName, const int disposition,
487 const int access_flags, const int omode,
488 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
489 const struct nls_table *nls_codepage, int remap);
490 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
491 u32 posix_flags, __u64 mode, __u16 *netfid,
492 FILE_UNIX_BASIC_INFO *pRetData,
493 __u32 *pOplock, const char *name,
494 const struct nls_table *nls_codepage, int remap);
495 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
496 const int smb_file_id);
497
498 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
499 const int smb_file_id);
500
501 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
502 unsigned int *nbytes, char **buf,
503 int *return_buf_type);
504 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
505 unsigned int *nbytes, const char *buf);
506 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
507 unsigned int *nbytes, struct kvec *iov, const int nvec);
508 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
509 const char *search_name, __u64 *inode_number,
510 const struct nls_table *nls_codepage,
511 int remap);
512
513 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
514 const __u16 netfid, const __u8 lock_type,
515 const __u32 num_unlock, const __u32 num_lock,
516 LOCKING_ANDX_RANGE *buf);
517 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
518 const __u16 netfid, const __u32 netpid, const __u64 len,
519 const __u64 offset, const __u32 numUnlock,
520 const __u32 numLock, const __u8 lockType,
521 const bool waitFlag, const __u8 oplock_level);
522 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
523 const __u16 smb_file_id, const __u32 netpid,
524 const loff_t start_offset, const __u64 len,
525 struct file_lock *, const __u16 lock_type,
526 const bool waitFlag);
527 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
528 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
529 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
530
531 extern struct cifs_ses *sesInfoAlloc(void);
532 extern void sesInfoFree(struct cifs_ses *);
533 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
534 enum smb3_tcon_ref_trace trace);
535 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
536
537 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
538 __u32 *pexpected_response_sequence_number);
539 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
540 __u32 *);
541 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
542 extern int cifs_verify_signature(struct smb_rqst *rqst,
543 struct TCP_Server_Info *server,
544 __u32 expected_sequence_number);
545 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
546 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
547 extern int calc_seckey(struct cifs_ses *);
548 extern int generate_smb30signingkey(struct cifs_ses *ses,
549 struct TCP_Server_Info *server);
550 extern int generate_smb311signingkey(struct cifs_ses *ses,
551 struct TCP_Server_Info *server);
552
553 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
554 extern int CIFSSMBCopy(unsigned int xid,
555 struct cifs_tcon *source_tcon,
556 const char *fromName,
557 const __u16 target_tid,
558 const char *toName, const int flags,
559 const struct nls_table *nls_codepage,
560 int remap_special_chars);
561 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
562 const unsigned char *searchName,
563 const unsigned char *ea_name, char *EAData,
564 size_t bufsize, struct cifs_sb_info *cifs_sb);
565 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
566 const char *fileName, const char *ea_name,
567 const void *ea_value, const __u16 ea_value_len,
568 const struct nls_table *nls_codepage,
569 struct cifs_sb_info *cifs_sb);
570 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
571 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
572 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
573 struct cifs_ntsd *, __u32, int);
574 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
575 const unsigned char *searchName,
576 struct posix_acl **acl, const int acl_type,
577 const struct nls_table *nls_codepage, int remap);
578 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
579 const unsigned char *fileName,
580 const struct posix_acl *acl, const int acl_type,
581 const struct nls_table *nls_codepage, int remap);
582 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
583 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
584 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
585 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
586 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
587 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
588 struct cifs_sb_info *cifs_sb,
589 struct cifs_fattr *fattr,
590 const unsigned char *path);
591 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
592 const struct nls_table *codepage);
593
594 extern struct TCP_Server_Info *
595 cifs_find_tcp_session(struct smb3_fs_context *ctx);
596
597 void __cifs_put_smb_ses(struct cifs_ses *ses);
598
599 extern struct cifs_ses *
600 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
601
602 void cifs_readdata_release(struct kref *refcount);
603 int cifs_async_readv(struct cifs_readdata *rdata);
604 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
605
606 int cifs_async_writev(struct cifs_writedata *wdata,
607 void (*release)(struct kref *kref));
608 void cifs_writev_complete(struct work_struct *work);
609 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
610 void cifs_writedata_release(struct kref *refcount);
611 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
612 struct cifs_sb_info *cifs_sb,
613 const unsigned char *path, char *pbuf,
614 unsigned int *pbytes_read);
615 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
616 struct cifs_sb_info *cifs_sb,
617 const unsigned char *path, char *pbuf,
618 unsigned int *pbytes_written);
619 int __cifs_calc_signature(struct smb_rqst *rqst,
620 struct TCP_Server_Info *server, char *signature,
621 struct shash_desc *shash);
622 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
623 enum securityEnum);
624 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
625 void cifs_aio_ctx_release(struct kref *refcount);
626
627 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
628 void cifs_free_hash(struct shash_desc **sdesc);
629
630 struct cifs_chan *
631 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
632 int cifs_try_adding_channels(struct cifs_ses *ses);
633 bool is_server_using_iface(struct TCP_Server_Info *server,
634 struct cifs_server_iface *iface);
635 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
636 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
637
638 int
639 cifs_ses_get_chan_index(struct cifs_ses *ses,
640 struct TCP_Server_Info *server);
641 void
642 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
643 struct TCP_Server_Info *server);
644 void
645 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
646 struct TCP_Server_Info *server);
647 bool
648 cifs_chan_in_reconnect(struct cifs_ses *ses,
649 struct TCP_Server_Info *server);
650 void
651 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
652 struct TCP_Server_Info *server);
653 void
654 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
655 struct TCP_Server_Info *server);
656 bool
657 cifs_chan_needs_reconnect(struct cifs_ses *ses,
658 struct TCP_Server_Info *server);
659 bool
660 cifs_chan_is_iface_active(struct cifs_ses *ses,
661 struct TCP_Server_Info *server);
662 void
663 cifs_disable_secondary_channels(struct cifs_ses *ses);
664 void
665 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
666 int
667 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
668
669 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
670 int copy_path_name(char *dst, const char *src);
671 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
672 int resp_buftype,
673 struct cifs_search_info *srch_inf);
674
675 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
676 void cifs_put_tcp_super(struct super_block *sb);
677 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
678 char *extract_hostname(const char *unc);
679 char *extract_sharename(const char *unc);
680 int parse_reparse_point(struct reparse_data_buffer *buf,
681 u32 plen, struct cifs_sb_info *cifs_sb,
682 bool unicode, struct cifs_open_info_data *data);
683 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
684 struct dentry *dentry, struct cifs_tcon *tcon,
685 const char *full_path, umode_t mode, dev_t dev);
686
687 #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)688 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
689 const char *old_path,
690 const struct nls_table *nls_codepage,
691 struct dfs_info3_param *referral, int remap)
692 {
693 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
694 referral, NULL);
695 }
696
697 int match_target_ip(struct TCP_Server_Info *server,
698 const char *share, size_t share_len,
699 bool *result);
700 int cifs_inval_name_dfs_link_error(const unsigned int xid,
701 struct cifs_tcon *tcon,
702 struct cifs_sb_info *cifs_sb,
703 const char *full_path,
704 bool *islink);
705 #else
cifs_inval_name_dfs_link_error(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,bool * islink)706 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
707 struct cifs_tcon *tcon,
708 struct cifs_sb_info *cifs_sb,
709 const char *full_path,
710 bool *islink)
711 {
712 *islink = false;
713 return 0;
714 }
715 #endif
716
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)717 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
718 {
719 if (cifs_sb && (backup_cred(cifs_sb)))
720 return options | CREATE_OPEN_BACKUP_INTENT;
721 else
722 return options;
723 }
724
725 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
726
727 /* Put references of @ses and its children */
cifs_put_smb_ses(struct cifs_ses * ses)728 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
729 {
730 struct cifs_ses *next;
731
732 do {
733 next = ses->dfs_root_ses;
734 __cifs_put_smb_ses(ses);
735 } while ((ses = next));
736 }
737
738 /* Get an active reference of @ses and its children.
739 *
740 * NOTE: make sure to call this function when incrementing reference count of
741 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
742 * will also get its reference count incremented.
743 *
744 * cifs_put_smb_ses() will put all references, so call it when you're done.
745 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)746 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
747 {
748 lockdep_assert_held(&cifs_tcp_ses_lock);
749
750 for (; ses; ses = ses->dfs_root_ses)
751 ses->ses_count++;
752 }
753
dfs_src_pathname_equal(const char * s1,const char * s2)754 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
755 {
756 if (strlen(s1) != strlen(s2))
757 return false;
758 for (; *s1; s1++, s2++) {
759 if (*s1 == '/' || *s1 == '\\') {
760 if (*s2 != '/' && *s2 != '\\')
761 return false;
762 } else if (tolower(*s1) != tolower(*s2))
763 return false;
764 }
765 return true;
766 }
767
release_mid(struct mid_q_entry * mid)768 static inline void release_mid(struct mid_q_entry *mid)
769 {
770 kref_put(&mid->refcount, __release_mid);
771 }
772
cifs_free_open_info(struct cifs_open_info_data * data)773 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
774 {
775 kfree(data->symlink_target);
776 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
777 memset(data, 0, sizeof(*data));
778 }
779
780 #endif /* _CIFSPROTO_H */
781