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