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 unsigned int size, unsigned int *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 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
155 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
156 int flags,
157 struct cifsFileInfo **ret_file);
158 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
159 int flags,
160 struct cifsFileInfo **ret_file);
161 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
162 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
163 struct cifsFileInfo **ret_file);
164 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode,
165 struct file *file);
166 extern unsigned int smbCalcSize(void *buf);
167 extern int decode_negTokenInit(unsigned char *security_blob, int length,
168 struct TCP_Server_Info *server);
169 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
170 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
171 extern int map_smb_to_linux_error(char *buf, bool logErr);
172 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
173 extern void header_assemble(struct smb_hdr *, char /* command */ ,
174 const struct cifs_tcon *, int /* length of
175 fixed section (word count) in two byte units */);
176 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
177 struct cifs_ses *ses,
178 void **request_buf);
179 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
180 enum securityEnum requested);
181 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
182 struct TCP_Server_Info *server,
183 const struct nls_table *nls_cp);
184 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
185 extern u64 cifs_UnixTimeToNT(struct timespec64);
186 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
187 int offset);
188 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
189 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
190 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
191 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
192 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
193 struct file_lock *flock, const unsigned int xid);
194 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
195
196 extern void cifs_down_write(struct rw_semaphore *sem);
197 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
198 struct tcon_link *tlink, __u32 oplock,
199 const char *symlink_target);
200 extern int cifs_posix_open(const char *full_path, struct inode **inode,
201 struct super_block *sb, int mode,
202 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
203 unsigned int xid);
204 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
205 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
206 FILE_UNIX_BASIC_INFO *info,
207 struct cifs_sb_info *cifs_sb);
208 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
209 struct cifs_sb_info *);
210 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
211 bool from_readdir);
212 extern struct inode *cifs_iget(struct super_block *sb,
213 struct cifs_fattr *fattr);
214
215 int cifs_get_inode_info(struct inode **inode, const char *full_path,
216 struct cifs_open_info_data *data, struct super_block *sb, int xid,
217 const struct cifs_fid *fid);
218 extern int smb311_posix_get_inode_info(struct inode **inode,
219 const char *full_path,
220 struct cifs_open_info_data *data,
221 struct super_block *sb,
222 const unsigned int xid);
223 extern int cifs_get_inode_info_unix(struct inode **pinode,
224 const unsigned char *search_path,
225 struct super_block *sb, unsigned int xid);
226 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
227 unsigned int xid, const char *full_path, __u32 dosattr);
228 extern int cifs_rename_pending_delete(const char *full_path,
229 struct dentry *dentry,
230 const unsigned int xid);
231 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
232 struct cifs_fattr *fattr, uint sidtype);
233 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
234 struct cifs_fattr *fattr, struct inode *inode,
235 bool get_mode_from_special_sid,
236 const char *path, const struct cifs_fid *pfid);
237 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
238 kuid_t uid, kgid_t gid);
239 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
240 const char *path, u32 *plen, u32 info);
241 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
242 const struct cifs_fid *pfid, u32 *plen, u32 info);
243 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
244 struct dentry *dentry, int type);
245 extern int cifs_set_acl(struct mnt_idmap *idmap,
246 struct dentry *dentry, struct posix_acl *acl, int type);
247 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
248 const char *path, int flag);
249 extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
250 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
251 bool posix,
252 __u64 nmode);
253 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
254
255 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
256 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
257 unsigned int to_read);
258 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
259 size_t to_read);
260 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
261 struct page *page,
262 unsigned int page_offset,
263 unsigned int to_read);
264 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
265 struct iov_iter *iter,
266 unsigned int to_read);
267 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
268 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
269 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
270 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
271 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
272 extern int cifs_match_super(struct super_block *, void *);
273 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
274 extern void cifs_umount(struct cifs_sb_info *);
275 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
276 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
277
278 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
279 __u64 length, __u8 type, __u16 flags,
280 struct cifsLockInfo **conf_lock,
281 int rw_check);
282 extern void cifs_add_pending_open(struct cifs_fid *fid,
283 struct tcon_link *tlink,
284 struct cifs_pending_open *open);
285 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
286 struct tcon_link *tlink,
287 struct cifs_pending_open *open);
288 extern void cifs_del_pending_open(struct cifs_pending_open *open);
289
290 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
291 struct cifs_deferred_close **dclose);
292
293 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
294 struct cifs_deferred_close *dclose);
295
296 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
297
298 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
299
300 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
301
302 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
303 const char *path);
304
305 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
306 const char *path);
307
308 extern struct TCP_Server_Info *
309 cifs_get_tcp_session(struct smb3_fs_context *ctx,
310 struct TCP_Server_Info *primary_server);
311 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
312 int from_reconnect);
313 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
314
315 extern void cifs_release_automount_timer(void);
316
317 void cifs_proc_init(void);
318 void cifs_proc_clean(void);
319
320 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
321 extern void cifs_free_llist(struct list_head *llist);
322 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
323
324 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
325 const struct nls_table *nlsc);
326
327 extern int cifs_negotiate_protocol(const unsigned int xid,
328 struct cifs_ses *ses,
329 struct TCP_Server_Info *server);
330 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
331 struct TCP_Server_Info *server,
332 struct nls_table *nls_info);
333 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
334 extern int CIFSSMBNegotiate(const unsigned int xid,
335 struct cifs_ses *ses,
336 struct TCP_Server_Info *server);
337
338 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
339 const char *tree, struct cifs_tcon *tcon,
340 const struct nls_table *);
341
342 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
343 const char *searchName, struct cifs_sb_info *cifs_sb,
344 __u16 *searchHandle, __u16 search_flags,
345 struct cifs_search_info *psrch_inf,
346 bool msearch);
347
348 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
349 __u16 searchHandle, __u16 search_flags,
350 struct cifs_search_info *psrch_inf);
351
352 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
353 const __u16 search_handle);
354
355 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
356 u16 netfid, FILE_ALL_INFO *pFindData);
357 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
358 const char *search_Name, FILE_ALL_INFO *data,
359 int legacy /* whether to use old info level */,
360 const struct nls_table *nls_codepage, int remap);
361 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
362 const char *search_name, FILE_ALL_INFO *data,
363 const struct nls_table *nls_codepage, int remap);
364
365 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
366 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
367 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
368 struct cifs_tcon *tcon,
369 const unsigned char *searchName,
370 FILE_UNIX_BASIC_INFO *pFindData,
371 const struct nls_table *nls_codepage, int remap);
372
373 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
374 const char *search_name,
375 struct dfs_info3_param **target_nodes,
376 unsigned int *num_of_nodes,
377 const struct nls_table *nls_codepage, int remap);
378
379 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
380 unsigned int *num_of_nodes,
381 struct dfs_info3_param **target_nodes,
382 const struct nls_table *nls_codepage, int remap,
383 const char *searchName, bool is_unicode);
384 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
385 struct cifs_sb_info *cifs_sb,
386 struct smb3_fs_context *ctx);
387 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
388 struct kstatfs *FSData);
389 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
390 struct kstatfs *FSData);
391 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
392 __u64 cap);
393
394 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
395 struct cifs_tcon *tcon);
396 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
397 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
398 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
399 struct kstatfs *FSData);
400
401 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon,
402 const char *fileName, __le32 attributes, __le64 write_time,
403 const struct nls_table *nls_codepage,
404 struct cifs_sb_info *cifs_sb);
405 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
406 const char *fileName, const FILE_BASIC_INFO *data,
407 const struct nls_table *nls_codepage,
408 struct cifs_sb_info *cifs_sb);
409 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
410 const FILE_BASIC_INFO *data, __u16 fid,
411 __u32 pid_of_opener);
412 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
413 struct cifs_tcon *tcon,
414 bool delete_file, __u16 fid,
415 __u32 pid_of_opener);
416 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
417 const char *file_name, __u64 size,
418 struct cifs_sb_info *cifs_sb, bool set_allocation,
419 struct dentry *dentry);
420 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
421 struct cifsFileInfo *cfile, __u64 size,
422 bool set_allocation);
423
424 struct cifs_unix_set_info_args {
425 __u64 ctime;
426 __u64 atime;
427 __u64 mtime;
428 __u64 mode;
429 kuid_t uid;
430 kgid_t gid;
431 dev_t device;
432 };
433
434 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
435 struct cifs_tcon *tcon,
436 const struct cifs_unix_set_info_args *args,
437 u16 fid, u32 pid_of_opener);
438
439 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
440 struct cifs_tcon *tcon, const char *file_name,
441 const struct cifs_unix_set_info_args *args,
442 const struct nls_table *nls_codepage,
443 int remap);
444
445 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
446 umode_t mode, struct cifs_tcon *tcon,
447 const char *name, struct cifs_sb_info *cifs_sb);
448 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
449 const char *name, struct cifs_sb_info *cifs_sb);
450 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
451 const char *name, __u16 type,
452 const struct nls_table *nls_codepage,
453 int remap_special_chars);
454 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
455 const char *name, struct cifs_sb_info *cifs_sb,
456 struct dentry *dentry);
457 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
458 struct dentry *source_dentry,
459 const char *from_name, const char *to_name,
460 struct cifs_sb_info *cifs_sb);
461 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
462 int netfid, const char *target_name,
463 const struct nls_table *nls_codepage,
464 int remap_special_chars);
465 int CIFSCreateHardLink(const unsigned int xid,
466 struct cifs_tcon *tcon,
467 struct dentry *source_dentry,
468 const char *from_name, const char *to_name,
469 struct cifs_sb_info *cifs_sb);
470 extern int CIFSUnixCreateHardLink(const unsigned int xid,
471 struct cifs_tcon *tcon,
472 const char *fromName, const char *toName,
473 const struct nls_table *nls_codepage,
474 int remap_special_chars);
475 extern int CIFSUnixCreateSymLink(const unsigned int xid,
476 struct cifs_tcon *tcon,
477 const char *fromName, const char *toName,
478 const struct nls_table *nls_codepage, int remap);
479 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
480 struct cifs_tcon *tcon,
481 const unsigned char *searchName, char **syminfo,
482 const struct nls_table *nls_codepage, int remap);
483 extern int cifs_query_reparse_point(const unsigned int xid,
484 struct cifs_tcon *tcon,
485 struct cifs_sb_info *cifs_sb,
486 const char *full_path,
487 u32 *tag, struct kvec *rsp,
488 int *rsp_buftype);
489 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
490 __u16 fid, char **symlinkinfo,
491 const struct nls_table *nls_codepage);
492 extern int CIFSSMB_set_compression(const unsigned int xid,
493 struct cifs_tcon *tcon, __u16 fid);
494 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
495 int *oplock, FILE_ALL_INFO *buf);
496 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
497 const char *fileName, const int disposition,
498 const int access_flags, const int omode,
499 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
500 const struct nls_table *nls_codepage, int remap);
501 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
502 u32 posix_flags, __u64 mode, __u16 *netfid,
503 FILE_UNIX_BASIC_INFO *pRetData,
504 __u32 *pOplock, const char *name,
505 const struct nls_table *nls_codepage, int remap);
506 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
507 const int smb_file_id);
508
509 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
510 const int smb_file_id);
511
512 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
513 unsigned int *nbytes, char **buf,
514 int *return_buf_type);
515 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
516 unsigned int *nbytes, const char *buf);
517 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
518 unsigned int *nbytes, struct kvec *iov, const int nvec);
519 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
520 const char *search_name, __u64 *inode_number,
521 const struct nls_table *nls_codepage,
522 int remap);
523
524 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
525 const __u16 netfid, const __u8 lock_type,
526 const __u32 num_unlock, const __u32 num_lock,
527 LOCKING_ANDX_RANGE *buf);
528 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
529 const __u16 netfid, const __u32 netpid, const __u64 len,
530 const __u64 offset, const __u32 numUnlock,
531 const __u32 numLock, const __u8 lockType,
532 const bool waitFlag, const __u8 oplock_level);
533 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
534 const __u16 smb_file_id, const __u32 netpid,
535 const loff_t start_offset, const __u64 len,
536 struct file_lock *, const __u16 lock_type,
537 const bool waitFlag);
538 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
539 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
540 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
541
542 extern struct cifs_ses *sesInfoAlloc(void);
543 extern void sesInfoFree(struct cifs_ses *);
544 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
545 enum smb3_tcon_ref_trace trace);
546 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
547
548 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
549 __u32 *pexpected_response_sequence_number);
550 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
551 __u32 *);
552 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
553 extern int cifs_verify_signature(struct smb_rqst *rqst,
554 struct TCP_Server_Info *server,
555 __u32 expected_sequence_number);
556 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
557 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
558 extern int calc_seckey(struct cifs_ses *);
559 extern int generate_smb30signingkey(struct cifs_ses *ses,
560 struct TCP_Server_Info *server);
561 extern int generate_smb311signingkey(struct cifs_ses *ses,
562 struct TCP_Server_Info *server);
563
564 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
565 extern int CIFSSMBCopy(unsigned int xid,
566 struct cifs_tcon *source_tcon,
567 const char *fromName,
568 const __u16 target_tid,
569 const char *toName, const int flags,
570 const struct nls_table *nls_codepage,
571 int remap_special_chars);
572 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
573 const unsigned char *searchName,
574 const unsigned char *ea_name, char *EAData,
575 size_t bufsize, struct cifs_sb_info *cifs_sb);
576 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
577 const char *fileName, const char *ea_name,
578 const void *ea_value, const __u16 ea_value_len,
579 const struct nls_table *nls_codepage,
580 struct cifs_sb_info *cifs_sb);
581 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
582 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info);
583 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
584 struct smb_ntsd *pntsd, __u32 len, int aclflag);
585 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
586 const unsigned char *searchName,
587 struct posix_acl **acl, const int acl_type,
588 const struct nls_table *nls_codepage, int remap);
589 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
590 const unsigned char *fileName,
591 const struct posix_acl *acl, const int acl_type,
592 const struct nls_table *nls_codepage, int remap);
593 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
594 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
595 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
596 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
597 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
598 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
599 struct cifs_sb_info *cifs_sb,
600 struct cifs_fattr *fattr,
601 const unsigned char *path);
602 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
603 const struct nls_table *codepage);
604
605 extern struct TCP_Server_Info *
606 cifs_find_tcp_session(struct smb3_fs_context *ctx);
607
608 void __cifs_put_smb_ses(struct cifs_ses *ses);
609
610 extern struct cifs_ses *
611 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
612
613 void cifs_readdata_release(struct kref *refcount);
614 int cifs_async_readv(struct cifs_readdata *rdata);
615 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
616
617 int cifs_async_writev(struct cifs_writedata *wdata,
618 void (*release)(struct kref *kref));
619 void cifs_writev_complete(struct work_struct *work);
620 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
621 void cifs_writedata_release(struct kref *refcount);
622 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
623 struct cifs_sb_info *cifs_sb,
624 const unsigned char *path, char *pbuf,
625 unsigned int *pbytes_read);
626 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
627 struct cifs_sb_info *cifs_sb,
628 const unsigned char *path, char *pbuf,
629 unsigned int *pbytes_written);
630 int __cifs_calc_signature(struct smb_rqst *rqst,
631 struct TCP_Server_Info *server, char *signature,
632 struct shash_desc *shash);
633 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
634 enum securityEnum);
635 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
636 void cifs_aio_ctx_release(struct kref *refcount);
637
638 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
639 void cifs_free_hash(struct shash_desc **sdesc);
640
641 struct cifs_chan *
642 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
643 int cifs_try_adding_channels(struct cifs_ses *ses);
644 bool is_server_using_iface(struct TCP_Server_Info *server,
645 struct cifs_server_iface *iface);
646 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
647 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
648
649 int
650 cifs_ses_get_chan_index(struct cifs_ses *ses,
651 struct TCP_Server_Info *server);
652 void
653 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
654 struct TCP_Server_Info *server);
655 void
656 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
657 struct TCP_Server_Info *server);
658 bool
659 cifs_chan_in_reconnect(struct cifs_ses *ses,
660 struct TCP_Server_Info *server);
661 void
662 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
663 struct TCP_Server_Info *server);
664 void
665 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
666 struct TCP_Server_Info *server);
667 bool
668 cifs_chan_needs_reconnect(struct cifs_ses *ses,
669 struct TCP_Server_Info *server);
670 bool
671 cifs_chan_is_iface_active(struct cifs_ses *ses,
672 struct TCP_Server_Info *server);
673 void
674 cifs_disable_secondary_channels(struct cifs_ses *ses);
675 void
676 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
677 int
678 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
679
680 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
681 int copy_path_name(char *dst, const char *src);
682 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
683 int resp_buftype,
684 struct cifs_search_info *srch_inf);
685
686 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
687 void cifs_put_tcp_super(struct super_block *sb);
688 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
689 char *extract_hostname(const char *unc);
690 char *extract_sharename(const char *unc);
691 int parse_reparse_point(struct reparse_data_buffer *buf,
692 u32 plen, struct cifs_sb_info *cifs_sb,
693 const char *full_path,
694 bool unicode, struct cifs_open_info_data *data);
695 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
696 struct dentry *dentry, struct cifs_tcon *tcon,
697 const char *full_path, umode_t mode, dev_t dev);
698 umode_t wire_mode_to_posix(u32 wire, bool is_dir);
699
700 #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)701 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
702 const char *old_path,
703 const struct nls_table *nls_codepage,
704 struct dfs_info3_param *referral, int remap)
705 {
706 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
707 referral, NULL);
708 }
709
710 int match_target_ip(struct TCP_Server_Info *server,
711 const char *share, size_t share_len,
712 bool *result);
713 int cifs_inval_name_dfs_link_error(const unsigned int xid,
714 struct cifs_tcon *tcon,
715 struct cifs_sb_info *cifs_sb,
716 const char *full_path,
717 bool *islink);
718 #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)719 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
720 struct cifs_tcon *tcon,
721 struct cifs_sb_info *cifs_sb,
722 const char *full_path,
723 bool *islink)
724 {
725 *islink = false;
726 return 0;
727 }
728 #endif
729
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)730 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
731 {
732 if (cifs_sb && (backup_cred(cifs_sb)))
733 return options | CREATE_OPEN_BACKUP_INTENT;
734 else
735 return options;
736 }
737
738 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
739
740 /* Put references of @ses and its children */
cifs_put_smb_ses(struct cifs_ses * ses)741 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
742 {
743 struct cifs_ses *next;
744
745 do {
746 next = ses->dfs_root_ses;
747 __cifs_put_smb_ses(ses);
748 } while ((ses = next));
749 }
750
751 /* Get an active reference of @ses and its children.
752 *
753 * NOTE: make sure to call this function when incrementing reference count of
754 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
755 * will also get its reference count incremented.
756 *
757 * cifs_put_smb_ses() will put all references, so call it when you're done.
758 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)759 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
760 {
761 lockdep_assert_held(&cifs_tcp_ses_lock);
762
763 for (; ses; ses = ses->dfs_root_ses)
764 ses->ses_count++;
765 }
766
dfs_src_pathname_equal(const char * s1,const char * s2)767 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
768 {
769 if (strlen(s1) != strlen(s2))
770 return false;
771 for (; *s1; s1++, s2++) {
772 if (*s1 == '/' || *s1 == '\\') {
773 if (*s2 != '/' && *s2 != '\\')
774 return false;
775 } else if (tolower(*s1) != tolower(*s2))
776 return false;
777 }
778 return true;
779 }
780
release_mid(struct mid_q_entry * mid)781 static inline void release_mid(struct mid_q_entry *mid)
782 {
783 kref_put(&mid->refcount, __release_mid);
784 }
785
cifs_free_open_info(struct cifs_open_info_data * data)786 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
787 {
788 kfree(data->symlink_target);
789 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
790 memset(data, 0, sizeof(*data));
791 }
792
793 #endif /* _CIFSPROTO_H */
794