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 int smb_send_kvec(struct TCP_Server_Info *server,
35 struct msghdr *msg,
36 size_t *sent);
37 extern unsigned int _get_xid(void);
38 extern void _free_xid(unsigned int);
39 #define get_xid() \
40 ({ \
41 unsigned int __xid = _get_xid(); \
42 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
43 __func__, __xid, \
44 from_kuid(&init_user_ns, current_fsuid())); \
45 trace_smb3_enter(__xid, __func__); \
46 __xid; \
47 })
48
49 #define free_xid(curr_xid) \
50 do { \
51 _free_xid(curr_xid); \
52 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
53 __func__, curr_xid, (int)rc); \
54 if (rc) \
55 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
56 else \
57 trace_smb3_exit_done(curr_xid, __func__); \
58 } while (0)
59 extern int init_cifs_idmap(void);
60 extern void exit_cifs_idmap(void);
61 extern int init_cifs_spnego(void);
62 extern void exit_cifs_spnego(void);
63 extern const char *build_path_from_dentry(struct dentry *, void *);
64 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
65 const char *tree, int tree_len,
66 bool prefix);
67 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
68 void *page, bool prefix);
alloc_dentry_path(void)69 static inline void *alloc_dentry_path(void)
70 {
71 return __getname();
72 }
73
free_dentry_path(void * page)74 static inline void free_dentry_path(void *page)
75 {
76 if (page)
77 __putname(page);
78 }
79
80 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
81 struct cifs_sb_info *cifs_sb,
82 struct cifs_tcon *tcon,
83 int add_treename);
84 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
85 char *cifs_build_devname(char *nodename, const char *prepath);
86 extern void delete_mid(struct mid_q_entry *mid);
87 void __release_mid(struct kref *refcount);
88 extern void cifs_wake_up_task(struct mid_q_entry *mid);
89 extern int cifs_handle_standard(struct TCP_Server_Info *server,
90 struct mid_q_entry *mid);
91 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
92 char dirsep);
93 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
94 extern int smb3_parse_opt(const char *options, const char *key, char **val);
95 extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
96 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
97 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
98 extern int cifs_call_async(struct TCP_Server_Info *server,
99 struct smb_rqst *rqst,
100 mid_receive_t *receive, mid_callback_t *callback,
101 mid_handle_t *handle, void *cbdata, const int flags,
102 const struct cifs_credits *exist_credits);
103 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
104 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
105 struct TCP_Server_Info *server,
106 struct smb_rqst *rqst, int *resp_buf_type,
107 const int flags, struct kvec *resp_iov);
108 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
109 struct TCP_Server_Info *server,
110 const int flags, const int num_rqst,
111 struct smb_rqst *rqst, int *resp_buf_type,
112 struct kvec *resp_iov);
113 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
114 struct smb_hdr * /* input */ ,
115 struct smb_hdr * /* out */ ,
116 int * /* bytes returned */ , const int);
117 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
118 char *in_buf, int flags);
119 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
120 struct TCP_Server_Info *,
121 struct smb_rqst *);
122 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
123 struct smb_rqst *);
124 extern int cifs_check_receive(struct mid_q_entry *mid,
125 struct TCP_Server_Info *server, bool log_error);
126 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
127 size_t size, size_t *num,
128 struct cifs_credits *credits);
129 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
130 struct kvec *, int /* nvec to send */,
131 int * /* type of buf returned */, const int flags,
132 struct kvec * /* resp vec */);
133 extern int SendReceiveBlockingLock(const unsigned int xid,
134 struct cifs_tcon *ptcon,
135 struct smb_hdr *in_buf,
136 struct smb_hdr *out_buf,
137 int *bytes_returned);
138
139 void
140 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
141 bool all_channels);
142 void
143 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
144 bool mark_smb_session);
145 extern int cifs_reconnect(struct TCP_Server_Info *server,
146 bool mark_smb_session);
147 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
148 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
149 extern bool backup_cred(struct cifs_sb_info *);
150 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
151 bool from_readdir);
152 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
153 unsigned int bytes_written);
154 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result);
155 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
156 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
157 int flags,
158 struct cifsFileInfo **ret_file);
159 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
160 int flags,
161 struct cifsFileInfo **ret_file);
162 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
163 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
164 struct cifsFileInfo **ret_file);
165 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode,
166 struct file *file);
167 extern unsigned int smbCalcSize(void *buf);
168 extern int decode_negTokenInit(unsigned char *security_blob, int length,
169 struct TCP_Server_Info *server);
170 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
171 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
172 extern int map_smb_to_linux_error(char *buf, bool logErr);
173 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
174 extern void header_assemble(struct smb_hdr *, char /* command */ ,
175 const struct cifs_tcon *, int /* length of
176 fixed section (word count) in two byte units */);
177 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
178 struct cifs_ses *ses,
179 void **request_buf);
180 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
181 enum securityEnum requested);
182 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
183 struct TCP_Server_Info *server,
184 const struct nls_table *nls_cp);
185 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
186 extern u64 cifs_UnixTimeToNT(struct timespec64);
187 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
188 int offset);
189 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
190 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
191 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
192 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
193 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
194 struct file_lock *flock, const unsigned int xid);
195 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
196
197 extern void cifs_down_write(struct rw_semaphore *sem);
198 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
199 struct tcon_link *tlink, __u32 oplock,
200 const char *symlink_target);
201 extern int cifs_posix_open(const char *full_path, struct inode **inode,
202 struct super_block *sb, int mode,
203 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
204 unsigned int xid);
205 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
206 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
207 FILE_UNIX_BASIC_INFO *info,
208 struct cifs_sb_info *cifs_sb);
209 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
210 struct cifs_sb_info *);
211 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
212 bool from_readdir);
213 extern struct inode *cifs_iget(struct super_block *sb,
214 struct cifs_fattr *fattr);
215
216 int cifs_get_inode_info(struct inode **inode, const char *full_path,
217 struct cifs_open_info_data *data, struct super_block *sb, int xid,
218 const struct cifs_fid *fid);
219 extern int smb311_posix_get_inode_info(struct inode **inode,
220 const char *full_path,
221 struct cifs_open_info_data *data,
222 struct super_block *sb,
223 const unsigned int xid);
224 extern int cifs_get_inode_info_unix(struct inode **pinode,
225 const unsigned char *search_path,
226 struct super_block *sb, unsigned int xid);
227 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
228 unsigned int xid, const char *full_path, __u32 dosattr);
229 extern int cifs_rename_pending_delete(const char *full_path,
230 struct dentry *dentry,
231 const unsigned int xid);
232 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
233 struct cifs_fattr *fattr, uint sidtype);
234 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
235 struct cifs_fattr *fattr, struct inode *inode,
236 bool get_mode_from_special_sid,
237 const char *path, const struct cifs_fid *pfid);
238 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
239 kuid_t uid, kgid_t gid);
240 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
241 const char *path, u32 *plen, u32 info);
242 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
243 const struct cifs_fid *pfid, u32 *plen, u32 info);
244 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
245 struct dentry *dentry, int type);
246 extern int cifs_set_acl(struct mnt_idmap *idmap,
247 struct dentry *dentry, struct posix_acl *acl, int type);
248 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
249 const char *path, int flag);
250 extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
251 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
252 bool posix,
253 __u64 nmode);
254 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
255
256 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
257 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
258 unsigned int to_read);
259 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
260 size_t to_read);
261 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
262 struct iov_iter *iter,
263 unsigned int to_read);
264 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
265 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
266 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
267 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
268 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
269 extern int cifs_match_super(struct super_block *, void *);
270 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
271 extern void cifs_umount(struct cifs_sb_info *);
272 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
273 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
274
275 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
276 __u64 length, __u8 type, __u16 flags,
277 struct cifsLockInfo **conf_lock,
278 int rw_check);
279 extern void cifs_add_pending_open(struct cifs_fid *fid,
280 struct tcon_link *tlink,
281 struct cifs_pending_open *open);
282 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
283 struct tcon_link *tlink,
284 struct cifs_pending_open *open);
285 extern void cifs_del_pending_open(struct cifs_pending_open *open);
286
287 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
288 struct cifs_deferred_close **dclose);
289
290 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
291 struct cifs_deferred_close *dclose);
292
293 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
294
295 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
296
297 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
298
299 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
300 const char *path);
301
302 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
303 const char *path);
304
305 extern struct TCP_Server_Info *
306 cifs_get_tcp_session(struct smb3_fs_context *ctx,
307 struct TCP_Server_Info *primary_server);
308 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
309 int from_reconnect);
310 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
311
312 extern void cifs_release_automount_timer(void);
313
314 void cifs_proc_init(void);
315 void cifs_proc_clean(void);
316
317 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
318 extern void cifs_free_llist(struct list_head *llist);
319 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
320
321 int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon);
322
323 extern int cifs_negotiate_protocol(const unsigned int xid,
324 struct cifs_ses *ses,
325 struct TCP_Server_Info *server);
326 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
327 struct TCP_Server_Info *server,
328 struct nls_table *nls_info);
329 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
330 extern int CIFSSMBNegotiate(const unsigned int xid,
331 struct cifs_ses *ses,
332 struct TCP_Server_Info *server);
333
334 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
335 const char *tree, struct cifs_tcon *tcon,
336 const struct nls_table *);
337
338 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
339 const char *searchName, struct cifs_sb_info *cifs_sb,
340 __u16 *searchHandle, __u16 search_flags,
341 struct cifs_search_info *psrch_inf,
342 bool msearch);
343
344 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
345 __u16 searchHandle, __u16 search_flags,
346 struct cifs_search_info *psrch_inf);
347
348 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
349 const __u16 search_handle);
350
351 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
352 u16 netfid, FILE_ALL_INFO *pFindData);
353 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
354 const char *search_Name, FILE_ALL_INFO *data,
355 int legacy /* whether to use old info level */,
356 const struct nls_table *nls_codepage, int remap);
357 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
358 const char *search_name, FILE_ALL_INFO *data,
359 const struct nls_table *nls_codepage, int remap);
360
361 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
362 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
363 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
364 struct cifs_tcon *tcon,
365 const unsigned char *searchName,
366 FILE_UNIX_BASIC_INFO *pFindData,
367 const struct nls_table *nls_codepage, int remap);
368
369 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
370 const char *search_name,
371 struct dfs_info3_param **target_nodes,
372 unsigned int *num_of_nodes,
373 const struct nls_table *nls_codepage, int remap);
374
375 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
376 unsigned int *num_of_nodes,
377 struct dfs_info3_param **target_nodes,
378 const struct nls_table *nls_codepage, int remap,
379 const char *searchName, bool is_unicode);
380 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
381 struct cifs_sb_info *cifs_sb,
382 struct smb3_fs_context *ctx);
383 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
384 struct kstatfs *FSData);
385 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
386 struct kstatfs *FSData);
387 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
388 __u64 cap);
389
390 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
391 struct cifs_tcon *tcon);
392 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
393 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
394 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
395 struct kstatfs *FSData);
396
397 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon,
398 const char *fileName, __le32 attributes, __le64 write_time,
399 const struct nls_table *nls_codepage,
400 struct cifs_sb_info *cifs_sb);
401 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
402 const char *fileName, const FILE_BASIC_INFO *data,
403 const struct nls_table *nls_codepage,
404 struct cifs_sb_info *cifs_sb);
405 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
406 const FILE_BASIC_INFO *data, __u16 fid,
407 __u32 pid_of_opener);
408 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
409 struct cifs_tcon *tcon,
410 bool delete_file, __u16 fid,
411 __u32 pid_of_opener);
412 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
413 const char *file_name, __u64 size,
414 struct cifs_sb_info *cifs_sb, bool set_allocation,
415 struct dentry *dentry);
416 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
417 struct cifsFileInfo *cfile, __u64 size,
418 bool set_allocation);
419
420 struct cifs_unix_set_info_args {
421 __u64 ctime;
422 __u64 atime;
423 __u64 mtime;
424 __u64 mode;
425 kuid_t uid;
426 kgid_t gid;
427 dev_t device;
428 };
429
430 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
431 struct cifs_tcon *tcon,
432 const struct cifs_unix_set_info_args *args,
433 u16 fid, u32 pid_of_opener);
434
435 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
436 struct cifs_tcon *tcon, const char *file_name,
437 const struct cifs_unix_set_info_args *args,
438 const struct nls_table *nls_codepage,
439 int remap);
440
441 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
442 umode_t mode, struct cifs_tcon *tcon,
443 const char *name, struct cifs_sb_info *cifs_sb);
444 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
445 const char *name, struct cifs_sb_info *cifs_sb);
446 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
447 const char *name, __u16 type,
448 const struct nls_table *nls_codepage,
449 int remap_special_chars);
450 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
451 const char *name, struct cifs_sb_info *cifs_sb,
452 struct dentry *dentry);
453 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
454 struct dentry *source_dentry,
455 const char *from_name, const char *to_name,
456 struct cifs_sb_info *cifs_sb);
457 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
458 int netfid, const char *target_name,
459 const struct nls_table *nls_codepage,
460 int remap_special_chars);
461 int CIFSCreateHardLink(const unsigned int xid,
462 struct cifs_tcon *tcon,
463 struct dentry *source_dentry,
464 const char *from_name, const char *to_name,
465 struct cifs_sb_info *cifs_sb);
466 extern int CIFSUnixCreateHardLink(const unsigned int xid,
467 struct cifs_tcon *tcon,
468 const char *fromName, const char *toName,
469 const struct nls_table *nls_codepage,
470 int remap_special_chars);
471 extern int CIFSUnixCreateSymLink(const unsigned int xid,
472 struct cifs_tcon *tcon,
473 const char *fromName, const char *toName,
474 const struct nls_table *nls_codepage, int remap);
475 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
476 struct cifs_tcon *tcon,
477 const unsigned char *searchName, char **syminfo,
478 const struct nls_table *nls_codepage, int remap);
479 extern int cifs_query_reparse_point(const unsigned int xid,
480 struct cifs_tcon *tcon,
481 struct cifs_sb_info *cifs_sb,
482 const char *full_path,
483 u32 *tag, struct kvec *rsp,
484 int *rsp_buftype);
485 extern int CIFSSMB_set_compression(const unsigned int xid,
486 struct cifs_tcon *tcon, __u16 fid);
487 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
488 int *oplock, FILE_ALL_INFO *buf);
489 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
490 const char *fileName, const int disposition,
491 const int access_flags, const int omode,
492 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
493 const struct nls_table *nls_codepage, int remap);
494 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
495 u32 posix_flags, __u64 mode, __u16 *netfid,
496 FILE_UNIX_BASIC_INFO *pRetData,
497 __u32 *pOplock, const char *name,
498 const struct nls_table *nls_codepage, int remap);
499 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
500 const int smb_file_id);
501
502 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
503 const int smb_file_id);
504
505 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
506 unsigned int *nbytes, char **buf,
507 int *return_buf_type);
508 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
509 unsigned int *nbytes, const char *buf);
510 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
511 unsigned int *nbytes, struct kvec *iov, const int nvec);
512 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
513 const char *search_name, __u64 *inode_number,
514 const struct nls_table *nls_codepage,
515 int remap);
516
517 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
518 const __u16 netfid, const __u8 lock_type,
519 const __u32 num_unlock, const __u32 num_lock,
520 LOCKING_ANDX_RANGE *buf);
521 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
522 const __u16 netfid, const __u32 netpid, const __u64 len,
523 const __u64 offset, const __u32 numUnlock,
524 const __u32 numLock, const __u8 lockType,
525 const bool waitFlag, const __u8 oplock_level);
526 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
527 const __u16 smb_file_id, const __u32 netpid,
528 const loff_t start_offset, const __u64 len,
529 struct file_lock *, const __u16 lock_type,
530 const bool waitFlag);
531 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
532 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
533 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
534
535 extern struct cifs_ses *sesInfoAlloc(void);
536 extern void sesInfoFree(struct cifs_ses *);
537 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
538 enum smb3_tcon_ref_trace trace);
539 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
540
541 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
542 __u32 *pexpected_response_sequence_number);
543 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
544 __u32 *);
545 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
546 extern int cifs_verify_signature(struct smb_rqst *rqst,
547 struct TCP_Server_Info *server,
548 __u32 expected_sequence_number);
549 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
550 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
551 extern int calc_seckey(struct cifs_ses *);
552 extern int generate_smb30signingkey(struct cifs_ses *ses,
553 struct TCP_Server_Info *server);
554 extern int generate_smb311signingkey(struct cifs_ses *ses,
555 struct TCP_Server_Info *server);
556
557 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
558 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
559 const unsigned char *searchName,
560 const unsigned char *ea_name, char *EAData,
561 size_t bufsize, struct cifs_sb_info *cifs_sb);
562 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
563 const char *fileName, const char *ea_name,
564 const void *ea_value, const __u16 ea_value_len,
565 const struct nls_table *nls_codepage,
566 struct cifs_sb_info *cifs_sb);
567 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
568 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info);
569 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
570 struct smb_ntsd *pntsd, __u32 len, int aclflag);
571 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
572 const unsigned char *searchName,
573 struct posix_acl **acl, const int acl_type,
574 const struct nls_table *nls_codepage, int remap);
575 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
576 const unsigned char *fileName,
577 const struct posix_acl *acl, const int acl_type,
578 const struct nls_table *nls_codepage, int remap);
579 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
580 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
581 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
582 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
583 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
584 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
585 struct cifs_sb_info *cifs_sb,
586 struct cifs_fattr *fattr,
587 const unsigned char *path);
588 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
589 const struct nls_table *codepage);
590
591 extern struct TCP_Server_Info *
592 cifs_find_tcp_session(struct smb3_fs_context *ctx);
593
594 void __cifs_put_smb_ses(struct cifs_ses *ses);
595
596 extern struct cifs_ses *
597 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
598
599 int cifs_async_readv(struct cifs_io_subrequest *rdata);
600 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
601
602 void cifs_async_writev(struct cifs_io_subrequest *wdata);
603 int cifs_query_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_read);
607 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
608 struct cifs_sb_info *cifs_sb,
609 const unsigned char *path, char *pbuf,
610 unsigned int *pbytes_written);
611 int __cifs_calc_signature(struct smb_rqst *rqst,
612 struct TCP_Server_Info *server, char *signature,
613 struct shash_desc *shash);
614 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
615 enum securityEnum);
616
617 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
618 void cifs_free_hash(struct shash_desc **sdesc);
619
620 int cifs_try_adding_channels(struct cifs_ses *ses);
621 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
622 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
623
624 int
625 cifs_ses_get_chan_index(struct cifs_ses *ses,
626 struct TCP_Server_Info *server);
627 void
628 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
629 struct TCP_Server_Info *server);
630 void
631 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
632 struct TCP_Server_Info *server);
633 void
634 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
635 struct TCP_Server_Info *server);
636 void
637 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
638 struct TCP_Server_Info *server);
639 bool
640 cifs_chan_needs_reconnect(struct cifs_ses *ses,
641 struct TCP_Server_Info *server);
642 bool
643 cifs_chan_is_iface_active(struct cifs_ses *ses,
644 struct TCP_Server_Info *server);
645 void
646 cifs_disable_secondary_channels(struct cifs_ses *ses);
647 void
648 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
649 int
650 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
651
652 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
653 int copy_path_name(char *dst, const char *src);
654 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
655 int resp_buftype,
656 struct cifs_search_info *srch_inf);
657
658 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
659 void cifs_put_tcp_super(struct super_block *sb);
660 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
661 char *extract_hostname(const char *unc);
662 char *extract_sharename(const char *unc);
663 int parse_reparse_point(struct reparse_data_buffer *buf,
664 u32 plen, struct cifs_sb_info *cifs_sb,
665 const char *full_path,
666 struct cifs_open_info_data *data);
667 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
668 struct dentry *dentry, struct cifs_tcon *tcon,
669 const char *full_path, umode_t mode, dev_t dev,
670 const char *symname);
671 int 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 umode_t wire_mode_to_posix(u32 wire, bool is_dir);
675
676 #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)677 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
678 const char *old_path,
679 const struct nls_table *nls_codepage,
680 struct dfs_info3_param *referral, int remap)
681 {
682 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
683 referral, NULL);
684 }
685
686 int match_target_ip(struct TCP_Server_Info *server,
687 const char *host, size_t hostlen,
688 bool *result);
689 int cifs_inval_name_dfs_link_error(const unsigned int xid,
690 struct cifs_tcon *tcon,
691 struct cifs_sb_info *cifs_sb,
692 const char *full_path,
693 bool *islink);
694 #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)695 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
696 struct cifs_tcon *tcon,
697 struct cifs_sb_info *cifs_sb,
698 const char *full_path,
699 bool *islink)
700 {
701 *islink = false;
702 return 0;
703 }
704 #endif
705
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)706 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
707 {
708 if (cifs_sb && (backup_cred(cifs_sb)))
709 return options | CREATE_OPEN_BACKUP_INTENT;
710 else
711 return options;
712 }
713
714 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
715
cifs_put_smb_ses(struct cifs_ses * ses)716 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
717 {
718 __cifs_put_smb_ses(ses);
719 }
720
721 /* Get an active reference of @ses and its children.
722 *
723 * NOTE: make sure to call this function when incrementing reference count of
724 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
725 * will also get its reference count incremented.
726 *
727 * cifs_put_smb_ses() will put all references, so call it when you're done.
728 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)729 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
730 {
731 lockdep_assert_held(&cifs_tcp_ses_lock);
732 ses->ses_count++;
733 }
734
dfs_src_pathname_equal(const char * s1,const char * s2)735 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
736 {
737 if (strlen(s1) != strlen(s2))
738 return false;
739 for (; *s1; s1++, s2++) {
740 if (*s1 == '/' || *s1 == '\\') {
741 if (*s2 != '/' && *s2 != '\\')
742 return false;
743 } else if (tolower(*s1) != tolower(*s2))
744 return false;
745 }
746 return true;
747 }
748
release_mid(struct mid_q_entry * mid)749 static inline void release_mid(struct mid_q_entry *mid)
750 {
751 kref_put(&mid->refcount, __release_mid);
752 }
753
cifs_free_open_info(struct cifs_open_info_data * data)754 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
755 {
756 kfree(data->symlink_target);
757 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
758 memset(data, 0, sizeof(*data));
759 }
760
761 #endif /* _CIFSPROTO_H */
762