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 extern void release_mid(struct mid_q_entry *mid);
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 void
136 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
137 bool all_channels);
138 void
139 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
140 bool mark_smb_session);
141 extern int cifs_reconnect(struct TCP_Server_Info *server,
142 bool mark_smb_session);
143 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
144 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
145 extern bool backup_cred(struct cifs_sb_info *);
146 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
147 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
148 unsigned int bytes_written);
149 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
150 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
151 int flags,
152 struct cifsFileInfo **ret_file);
153 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
154 int flags,
155 struct cifsFileInfo **ret_file);
156 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
157 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
158 struct cifsFileInfo **ret_file);
159 extern unsigned int smbCalcSize(void *buf);
160 extern int decode_negTokenInit(unsigned char *security_blob, int length,
161 struct TCP_Server_Info *server);
162 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
163 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
164 extern int map_smb_to_linux_error(char *buf, bool logErr);
165 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
166 extern void header_assemble(struct smb_hdr *, char /* command */ ,
167 const struct cifs_tcon *, int /* length of
168 fixed section (word count) in two byte units */);
169 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
170 struct cifs_ses *ses,
171 void **request_buf);
172 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
173 enum securityEnum requested);
174 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
175 struct TCP_Server_Info *server,
176 const struct nls_table *nls_cp);
177 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
178 extern u64 cifs_UnixTimeToNT(struct timespec64);
179 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
180 int offset);
181 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
182 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
183 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
184 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
185 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
186 struct file_lock *flock, const unsigned int xid);
187 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
188
189 extern void cifs_down_write(struct rw_semaphore *sem);
190 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
191 struct tcon_link *tlink, __u32 oplock,
192 const char *symlink_target);
193 extern int cifs_posix_open(const char *full_path, struct inode **inode,
194 struct super_block *sb, int mode,
195 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
196 unsigned int xid);
197 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
198 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
199 FILE_UNIX_BASIC_INFO *info,
200 struct cifs_sb_info *cifs_sb);
201 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
202 struct cifs_sb_info *);
203 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
204 extern struct inode *cifs_iget(struct super_block *sb,
205 struct cifs_fattr *fattr);
206
207 int cifs_get_inode_info(struct inode **inode, const char *full_path,
208 struct cifs_open_info_data *data, struct super_block *sb, int xid,
209 const struct cifs_fid *fid);
210 bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
211 struct cifs_fattr *fattr,
212 u32 tag);
213 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
214 struct super_block *sb, unsigned int xid);
215 extern int cifs_get_inode_info_unix(struct inode **pinode,
216 const unsigned char *search_path,
217 struct super_block *sb, unsigned int xid);
218 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
219 unsigned int xid, const char *full_path, __u32 dosattr);
220 extern int cifs_rename_pending_delete(const char *full_path,
221 struct dentry *dentry,
222 const unsigned int xid);
223 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
224 struct cifs_fattr *fattr, uint sidtype);
225 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
226 struct cifs_fattr *fattr, struct inode *inode,
227 bool get_mode_from_special_sid,
228 const char *path, const struct cifs_fid *pfid);
229 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
230 kuid_t uid, kgid_t gid);
231 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
232 const char *, u32 *, u32);
233 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
234 const struct cifs_fid *, u32 *, u32);
235 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
236 struct dentry *dentry, int type);
237 extern int cifs_set_acl(struct mnt_idmap *idmap,
238 struct dentry *dentry, struct posix_acl *acl, int type);
239 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
240 const char *, int);
241 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
242 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
243 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
244
245 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
246 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
247 unsigned int to_read);
248 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
249 size_t to_read);
250 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
251 struct page *page,
252 unsigned int page_offset,
253 unsigned int to_read);
254 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
255 struct iov_iter *iter,
256 unsigned int to_read);
257 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
258 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
259 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
260 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
261 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
262 extern int cifs_match_super(struct super_block *, void *);
263 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
264 extern void cifs_umount(struct cifs_sb_info *);
265 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
266 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
267
268 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
269 __u64 length, __u8 type, __u16 flags,
270 struct cifsLockInfo **conf_lock,
271 int rw_check);
272 extern void cifs_add_pending_open(struct cifs_fid *fid,
273 struct tcon_link *tlink,
274 struct cifs_pending_open *open);
275 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
276 struct tcon_link *tlink,
277 struct cifs_pending_open *open);
278 extern void cifs_del_pending_open(struct cifs_pending_open *open);
279
280 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
281 struct cifs_deferred_close **dclose);
282
283 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
284 struct cifs_deferred_close *dclose);
285
286 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
287
288 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
289
290 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
291
292 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
293 const char *path);
294 extern struct TCP_Server_Info *
295 cifs_get_tcp_session(struct smb3_fs_context *ctx,
296 struct TCP_Server_Info *primary_server);
297 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
298 int from_reconnect);
299 extern void cifs_put_tcon(struct cifs_tcon *tcon);
300
301 extern void cifs_release_automount_timer(void);
302
303 void cifs_proc_init(void);
304 void cifs_proc_clean(void);
305
306 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
307 extern void cifs_free_llist(struct list_head *llist);
308 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
309
310 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
311 const struct nls_table *nlsc);
312
313 extern int cifs_negotiate_protocol(const unsigned int xid,
314 struct cifs_ses *ses,
315 struct TCP_Server_Info *server);
316 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
317 struct TCP_Server_Info *server,
318 struct nls_table *nls_info);
319 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
320 extern int CIFSSMBNegotiate(const unsigned int xid,
321 struct cifs_ses *ses,
322 struct TCP_Server_Info *server);
323
324 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
325 const char *tree, struct cifs_tcon *tcon,
326 const struct nls_table *);
327
328 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
329 const char *searchName, struct cifs_sb_info *cifs_sb,
330 __u16 *searchHandle, __u16 search_flags,
331 struct cifs_search_info *psrch_inf,
332 bool msearch);
333
334 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
335 __u16 searchHandle, __u16 search_flags,
336 struct cifs_search_info *psrch_inf);
337
338 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
339 const __u16 search_handle);
340
341 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
342 u16 netfid, FILE_ALL_INFO *pFindData);
343 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
344 const char *search_Name, FILE_ALL_INFO *data,
345 int legacy /* whether to use old info level */,
346 const struct nls_table *nls_codepage, int remap);
347 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
348 const char *search_name, FILE_ALL_INFO *data,
349 const struct nls_table *nls_codepage, int remap);
350
351 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
352 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
353 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
354 struct cifs_tcon *tcon,
355 const unsigned char *searchName,
356 FILE_UNIX_BASIC_INFO *pFindData,
357 const struct nls_table *nls_codepage, int remap);
358
359 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
360 const char *search_name,
361 struct dfs_info3_param **target_nodes,
362 unsigned int *num_of_nodes,
363 const struct nls_table *nls_codepage, int remap);
364
365 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
366 unsigned int *num_of_nodes,
367 struct dfs_info3_param **target_nodes,
368 const struct nls_table *nls_codepage, int remap,
369 const char *searchName, bool is_unicode);
370 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
371 struct cifs_sb_info *cifs_sb,
372 struct smb3_fs_context *ctx);
373 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
374 struct kstatfs *FSData);
375 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
376 struct kstatfs *FSData);
377 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
378 __u64 cap);
379
380 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
381 struct cifs_tcon *tcon);
382 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
383 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
384 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
385 struct kstatfs *FSData);
386
387 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
388 const char *fileName, const FILE_BASIC_INFO *data,
389 const struct nls_table *nls_codepage,
390 struct cifs_sb_info *cifs_sb);
391 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
392 const FILE_BASIC_INFO *data, __u16 fid,
393 __u32 pid_of_opener);
394 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
395 struct cifs_tcon *tcon,
396 bool delete_file, __u16 fid,
397 __u32 pid_of_opener);
398 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
399 const char *file_name, __u64 size,
400 struct cifs_sb_info *cifs_sb, bool set_allocation);
401 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
402 struct cifsFileInfo *cfile, __u64 size,
403 bool set_allocation);
404
405 struct cifs_unix_set_info_args {
406 __u64 ctime;
407 __u64 atime;
408 __u64 mtime;
409 __u64 mode;
410 kuid_t uid;
411 kgid_t gid;
412 dev_t device;
413 };
414
415 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
416 struct cifs_tcon *tcon,
417 const struct cifs_unix_set_info_args *args,
418 u16 fid, u32 pid_of_opener);
419
420 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
421 struct cifs_tcon *tcon, const char *file_name,
422 const struct cifs_unix_set_info_args *args,
423 const struct nls_table *nls_codepage,
424 int remap);
425
426 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
427 umode_t mode, struct cifs_tcon *tcon,
428 const char *name, struct cifs_sb_info *cifs_sb);
429 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
430 const char *name, struct cifs_sb_info *cifs_sb);
431 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
432 const char *name, __u16 type,
433 const struct nls_table *nls_codepage,
434 int remap_special_chars);
435 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
436 const char *name, struct cifs_sb_info *cifs_sb);
437 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
438 const char *from_name, const char *to_name,
439 struct cifs_sb_info *cifs_sb);
440 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
441 int netfid, const char *target_name,
442 const struct nls_table *nls_codepage,
443 int remap_special_chars);
444 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
445 const char *from_name, const char *to_name,
446 struct cifs_sb_info *cifs_sb);
447 extern int CIFSUnixCreateHardLink(const unsigned int xid,
448 struct cifs_tcon *tcon,
449 const char *fromName, const char *toName,
450 const struct nls_table *nls_codepage,
451 int remap_special_chars);
452 extern int CIFSUnixCreateSymLink(const unsigned int xid,
453 struct cifs_tcon *tcon,
454 const char *fromName, const char *toName,
455 const struct nls_table *nls_codepage, int remap);
456 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
457 struct cifs_tcon *tcon,
458 const unsigned char *searchName, char **syminfo,
459 const struct nls_table *nls_codepage, int remap);
460 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
461 __u16 fid, char **symlinkinfo,
462 const struct nls_table *nls_codepage);
463 extern int CIFSSMB_set_compression(const unsigned int xid,
464 struct cifs_tcon *tcon, __u16 fid);
465 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
466 int *oplock, FILE_ALL_INFO *buf);
467 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
468 const char *fileName, const int disposition,
469 const int access_flags, const int omode,
470 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
471 const struct nls_table *nls_codepage, int remap);
472 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
473 u32 posix_flags, __u64 mode, __u16 *netfid,
474 FILE_UNIX_BASIC_INFO *pRetData,
475 __u32 *pOplock, const char *name,
476 const struct nls_table *nls_codepage, int remap);
477 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
478 const int smb_file_id);
479
480 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
481 const int smb_file_id);
482
483 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
484 unsigned int *nbytes, char **buf,
485 int *return_buf_type);
486 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
487 unsigned int *nbytes, const char *buf);
488 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
489 unsigned int *nbytes, struct kvec *iov, const int nvec);
490 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
491 const char *search_name, __u64 *inode_number,
492 const struct nls_table *nls_codepage,
493 int remap);
494
495 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
496 const __u16 netfid, const __u8 lock_type,
497 const __u32 num_unlock, const __u32 num_lock,
498 LOCKING_ANDX_RANGE *buf);
499 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
500 const __u16 netfid, const __u32 netpid, const __u64 len,
501 const __u64 offset, const __u32 numUnlock,
502 const __u32 numLock, const __u8 lockType,
503 const bool waitFlag, const __u8 oplock_level);
504 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
505 const __u16 smb_file_id, const __u32 netpid,
506 const loff_t start_offset, const __u64 len,
507 struct file_lock *, const __u16 lock_type,
508 const bool waitFlag);
509 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
510 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
511 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
512
513 extern struct cifs_ses *sesInfoAlloc(void);
514 extern void sesInfoFree(struct cifs_ses *);
515 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled);
516 extern void tconInfoFree(struct cifs_tcon *);
517
518 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
519 __u32 *pexpected_response_sequence_number);
520 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
521 __u32 *);
522 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
523 extern int cifs_verify_signature(struct smb_rqst *rqst,
524 struct TCP_Server_Info *server,
525 __u32 expected_sequence_number);
526 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
527 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
528 extern int calc_seckey(struct cifs_ses *);
529 extern int generate_smb30signingkey(struct cifs_ses *ses,
530 struct TCP_Server_Info *server);
531 extern int generate_smb311signingkey(struct cifs_ses *ses,
532 struct TCP_Server_Info *server);
533
534 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
535 extern int CIFSSMBCopy(unsigned int xid,
536 struct cifs_tcon *source_tcon,
537 const char *fromName,
538 const __u16 target_tid,
539 const char *toName, const int flags,
540 const struct nls_table *nls_codepage,
541 int remap_special_chars);
542 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
543 const unsigned char *searchName,
544 const unsigned char *ea_name, char *EAData,
545 size_t bufsize, struct cifs_sb_info *cifs_sb);
546 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
547 const char *fileName, const char *ea_name,
548 const void *ea_value, const __u16 ea_value_len,
549 const struct nls_table *nls_codepage,
550 struct cifs_sb_info *cifs_sb);
551 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
552 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
553 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
554 struct cifs_ntsd *, __u32, int);
555 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
556 const unsigned char *searchName,
557 struct posix_acl **acl, const int acl_type,
558 const struct nls_table *nls_codepage, int remap);
559 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
560 const unsigned char *fileName,
561 const struct posix_acl *acl, const int acl_type,
562 const struct nls_table *nls_codepage, int remap);
563 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
564 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
565 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
566 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
567 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
568 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
569 struct cifs_sb_info *cifs_sb,
570 struct cifs_fattr *fattr,
571 const unsigned char *path);
572 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
573 const struct nls_table *codepage);
574
575 extern struct TCP_Server_Info *
576 cifs_find_tcp_session(struct smb3_fs_context *ctx);
577
578 void __cifs_put_smb_ses(struct cifs_ses *ses);
579
580 extern struct cifs_ses *
581 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
582
583 void cifs_readdata_release(struct kref *refcount);
584 int cifs_async_readv(struct cifs_readdata *rdata);
585 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
586
587 int cifs_async_writev(struct cifs_writedata *wdata,
588 void (*release)(struct kref *kref));
589 void cifs_writev_complete(struct work_struct *work);
590 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
591 void cifs_writedata_release(struct kref *refcount);
592 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
593 struct cifs_sb_info *cifs_sb,
594 const unsigned char *path, char *pbuf,
595 unsigned int *pbytes_read);
596 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
597 struct cifs_sb_info *cifs_sb,
598 const unsigned char *path, char *pbuf,
599 unsigned int *pbytes_written);
600 int __cifs_calc_signature(struct smb_rqst *rqst,
601 struct TCP_Server_Info *server, char *signature,
602 struct shash_desc *shash);
603 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
604 enum securityEnum);
605 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
606 void cifs_aio_ctx_release(struct kref *refcount);
607
608 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
609 void cifs_free_hash(struct shash_desc **sdesc);
610
611 struct cifs_chan *
612 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
613 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
614 bool is_server_using_iface(struct TCP_Server_Info *server,
615 struct cifs_server_iface *iface);
616 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
617 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
618
619 unsigned int
620 cifs_ses_get_chan_index(struct cifs_ses *ses,
621 struct TCP_Server_Info *server);
622 void
623 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
624 struct TCP_Server_Info *server);
625 void
626 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
627 struct TCP_Server_Info *server);
628 bool
629 cifs_chan_in_reconnect(struct cifs_ses *ses,
630 struct TCP_Server_Info *server);
631 void
632 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
633 struct TCP_Server_Info *server);
634 void
635 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
636 struct TCP_Server_Info *server);
637 bool
638 cifs_chan_needs_reconnect(struct cifs_ses *ses,
639 struct TCP_Server_Info *server);
640 bool
641 cifs_chan_is_iface_active(struct cifs_ses *ses,
642 struct TCP_Server_Info *server);
643 int
644 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
645 int
646 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
647
648 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
649 int copy_path_name(char *dst, const char *src);
650 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
651 int resp_buftype,
652 struct cifs_search_info *srch_inf);
653
654 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
655 void cifs_put_tcp_super(struct super_block *sb);
656 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
657 char *extract_hostname(const char *unc);
658 char *extract_sharename(const char *unc);
659
660 #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)661 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
662 const char *old_path,
663 const struct nls_table *nls_codepage,
664 struct dfs_info3_param *referral, int remap)
665 {
666 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
667 referral, NULL);
668 }
669
670 int match_target_ip(struct TCP_Server_Info *server,
671 const char *share, size_t share_len,
672 bool *result);
673 int cifs_inval_name_dfs_link_error(const unsigned int xid,
674 struct cifs_tcon *tcon,
675 struct cifs_sb_info *cifs_sb,
676 const char *full_path,
677 bool *islink);
678 #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)679 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
680 struct cifs_tcon *tcon,
681 struct cifs_sb_info *cifs_sb,
682 const char *full_path,
683 bool *islink)
684 {
685 *islink = false;
686 return 0;
687 }
688 #endif
689
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)690 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
691 {
692 if (cifs_sb && (backup_cred(cifs_sb)))
693 return options | CREATE_OPEN_BACKUP_INTENT;
694 else
695 return options;
696 }
697
698 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
699 void cifs_put_tcon_super(struct super_block *sb);
700 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
701
702 /* Put references of @ses and @ses->dfs_root_ses */
cifs_put_smb_ses(struct cifs_ses * ses)703 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
704 {
705 struct cifs_ses *rses = ses->dfs_root_ses;
706
707 __cifs_put_smb_ses(ses);
708 if (rses)
709 __cifs_put_smb_ses(rses);
710 }
711
712 /* Get an active reference of @ses and @ses->dfs_root_ses.
713 *
714 * NOTE: make sure to call this function when incrementing reference count of
715 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
716 * will also get its reference count incremented.
717 *
718 * cifs_put_smb_ses() will put both references, so call it when you're done.
719 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)720 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
721 {
722 lockdep_assert_held(&cifs_tcp_ses_lock);
723
724 ses->ses_count++;
725 if (ses->dfs_root_ses)
726 ses->dfs_root_ses->ses_count++;
727 }
728
dfs_src_pathname_equal(const char * s1,const char * s2)729 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
730 {
731 if (strlen(s1) != strlen(s2))
732 return false;
733 for (; *s1; s1++, s2++) {
734 if (*s1 == '/' || *s1 == '\\') {
735 if (*s2 != '/' && *s2 != '\\')
736 return false;
737 } else if (tolower(*s1) != tolower(*s2))
738 return false;
739 }
740 return true;
741 }
742
743 #endif /* _CIFSPROTO_H */
744
