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 int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server);
120 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
121 struct TCP_Server_Info *,
122 struct smb_rqst *);
123 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
124 struct smb_rqst *);
125 int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
126 struct smb_rqst *rqst);
127 extern int cifs_check_receive(struct mid_q_entry *mid,
128 struct TCP_Server_Info *server, bool log_error);
129 int wait_for_free_request(struct TCP_Server_Info *server, const int flags,
130 unsigned int *instance);
131 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
132 size_t size, size_t *num,
133 struct cifs_credits *credits);
134
135 static inline int
send_cancel(struct TCP_Server_Info * server,struct smb_rqst * rqst,struct mid_q_entry * mid)136 send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
137 struct mid_q_entry *mid)
138 {
139 return server->ops->send_cancel ?
140 server->ops->send_cancel(server, rqst, mid) : 0;
141 }
142
143 int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ);
144 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
145 struct kvec *, int /* nvec to send */,
146 int * /* type of buf returned */, const int flags,
147 struct kvec * /* resp vec */);
148 extern int SendReceiveBlockingLock(const unsigned int xid,
149 struct cifs_tcon *ptcon,
150 struct smb_hdr *in_buf,
151 struct smb_hdr *out_buf,
152 int *bytes_returned);
153
154 void smb2_query_server_interfaces(struct work_struct *work);
155 void
156 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
157 bool all_channels);
158 void
159 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
160 bool mark_smb_session);
161 extern int cifs_reconnect(struct TCP_Server_Info *server,
162 bool mark_smb_session);
163 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
164 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
165 extern bool backup_cred(struct cifs_sb_info *);
166 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
167 bool from_readdir);
168 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
169 unsigned int bytes_written);
170 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result);
171 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
172 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
173 int flags,
174 struct cifsFileInfo **ret_file);
175 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
176 int flags,
177 struct cifsFileInfo **ret_file);
178 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
179 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
180 struct cifsFileInfo **ret_file);
181 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode,
182 struct file *file);
183 extern unsigned int smbCalcSize(void *buf);
184 extern int decode_negTokenInit(unsigned char *security_blob, int length,
185 struct TCP_Server_Info *server);
186 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
187 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
188 extern int map_smb_to_linux_error(char *buf, bool logErr);
189 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
190 extern void header_assemble(struct smb_hdr *, char /* command */ ,
191 const struct cifs_tcon *, int /* length of
192 fixed section (word count) in two byte units */);
193 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
194 struct cifs_ses *ses,
195 void **request_buf);
196 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
197 enum securityEnum requested);
198 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
199 struct TCP_Server_Info *server,
200 const struct nls_table *nls_cp);
201 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
202 extern u64 cifs_UnixTimeToNT(struct timespec64);
203 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
204 int offset);
205 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
206 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
207 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
208 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
209 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
210 struct file_lock *flock, const unsigned int xid);
211 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
212
213 extern void cifs_down_write(struct rw_semaphore *sem);
214 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
215 struct tcon_link *tlink, __u32 oplock,
216 const char *symlink_target);
217 extern int cifs_posix_open(const char *full_path, struct inode **inode,
218 struct super_block *sb, int mode,
219 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
220 unsigned int xid);
221 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
222 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
223 FILE_UNIX_BASIC_INFO *info,
224 struct cifs_sb_info *cifs_sb);
225 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
226 struct cifs_sb_info *);
227 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
228 bool from_readdir);
229 extern struct inode *cifs_iget(struct super_block *sb,
230 struct cifs_fattr *fattr);
231
232 int cifs_get_inode_info(struct inode **inode, const char *full_path,
233 struct cifs_open_info_data *data, struct super_block *sb, int xid,
234 const struct cifs_fid *fid);
235 extern int smb311_posix_get_inode_info(struct inode **inode,
236 const char *full_path,
237 struct cifs_open_info_data *data,
238 struct super_block *sb,
239 const unsigned int xid);
240 extern int cifs_get_inode_info_unix(struct inode **pinode,
241 const unsigned char *search_path,
242 struct super_block *sb, unsigned int xid);
243 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
244 unsigned int xid, const char *full_path, __u32 dosattr);
245 extern int cifs_rename_pending_delete(const char *full_path,
246 struct dentry *dentry,
247 const unsigned int xid);
248 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
249 struct cifs_fattr *fattr, uint sidtype);
250 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
251 struct cifs_fattr *fattr, struct inode *inode,
252 bool get_mode_from_special_sid,
253 const char *path, const struct cifs_fid *pfid);
254 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
255 kuid_t uid, kgid_t gid);
256 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
257 const char *path, u32 *plen, u32 info);
258 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
259 const struct cifs_fid *pfid, u32 *plen, u32 info);
260 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
261 struct dentry *dentry, int type);
262 extern int cifs_set_acl(struct mnt_idmap *idmap,
263 struct dentry *dentry, struct posix_acl *acl, int type);
264 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
265 const char *path, int flag);
266 extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
267 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
268 bool posix,
269 __u64 nmode);
270 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
271
272 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
273 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
274 unsigned int to_read);
275 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
276 size_t to_read);
277 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
278 struct iov_iter *iter,
279 unsigned int to_read);
280 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
281 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
282 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
283 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
284 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
285 extern int cifs_match_super(struct super_block *, void *);
286 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
287 extern void cifs_umount(struct cifs_sb_info *);
288 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
289 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
290
291 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
292 __u64 length, __u8 type, __u16 flags,
293 struct cifsLockInfo **conf_lock,
294 int rw_check);
295 extern void cifs_add_pending_open(struct cifs_fid *fid,
296 struct tcon_link *tlink,
297 struct cifs_pending_open *open);
298 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
299 struct tcon_link *tlink,
300 struct cifs_pending_open *open);
301 extern void cifs_del_pending_open(struct cifs_pending_open *open);
302
303 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
304 struct cifs_deferred_close **dclose);
305
306 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
307 struct cifs_deferred_close *dclose);
308
309 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
310
311 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
312
313 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
314
315 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
316 const char *path);
317
318 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
319 const char *path);
320
321 extern struct TCP_Server_Info *
322 cifs_get_tcp_session(struct smb3_fs_context *ctx,
323 struct TCP_Server_Info *primary_server);
324 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
325 int from_reconnect);
326 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
327
328 extern void cifs_release_automount_timer(void);
329
330 void cifs_proc_init(void);
331 void cifs_proc_clean(void);
332
333 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
334 extern void cifs_free_llist(struct list_head *llist);
335 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
336
337 int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon);
338
339 extern int cifs_negotiate_protocol(const unsigned int xid,
340 struct cifs_ses *ses,
341 struct TCP_Server_Info *server);
342 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
343 struct TCP_Server_Info *server,
344 struct nls_table *nls_info);
345 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
346 extern int CIFSSMBNegotiate(const unsigned int xid,
347 struct cifs_ses *ses,
348 struct TCP_Server_Info *server);
349
350 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
351 const char *tree, struct cifs_tcon *tcon,
352 const struct nls_table *);
353
354 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
355 const char *searchName, struct cifs_sb_info *cifs_sb,
356 __u16 *searchHandle, __u16 search_flags,
357 struct cifs_search_info *psrch_inf,
358 bool msearch);
359
360 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
361 __u16 searchHandle, __u16 search_flags,
362 struct cifs_search_info *psrch_inf);
363
364 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
365 const __u16 search_handle);
366
367 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
368 u16 netfid, FILE_ALL_INFO *pFindData);
369 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
370 const char *search_Name, FILE_ALL_INFO *data,
371 int legacy /* whether to use old info level */,
372 const struct nls_table *nls_codepage, int remap);
373 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
374 const char *search_name, FILE_ALL_INFO *data,
375 const struct nls_table *nls_codepage, int remap);
376
377 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
378 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
379 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
380 struct cifs_tcon *tcon,
381 const unsigned char *searchName,
382 FILE_UNIX_BASIC_INFO *pFindData,
383 const struct nls_table *nls_codepage, int remap);
384
385 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
386 const char *search_name,
387 struct dfs_info3_param **target_nodes,
388 unsigned int *num_of_nodes,
389 const struct nls_table *nls_codepage, int remap);
390
391 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
392 unsigned int *num_of_nodes,
393 struct dfs_info3_param **target_nodes,
394 const struct nls_table *nls_codepage, int remap,
395 const char *searchName, bool is_unicode);
396 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
397 struct cifs_sb_info *cifs_sb,
398 struct smb3_fs_context *ctx);
399 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
400 struct kstatfs *FSData);
401 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
402 struct kstatfs *FSData);
403 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
404 __u64 cap);
405
406 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
407 struct cifs_tcon *tcon);
408 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
409 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
410 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
411 struct kstatfs *FSData);
412
413 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon,
414 const char *fileName, __le32 attributes, __le64 write_time,
415 const struct nls_table *nls_codepage,
416 struct cifs_sb_info *cifs_sb);
417 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
418 const char *fileName, const FILE_BASIC_INFO *data,
419 const struct nls_table *nls_codepage,
420 struct cifs_sb_info *cifs_sb);
421 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
422 const FILE_BASIC_INFO *data, __u16 fid,
423 __u32 pid_of_opener);
424 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
425 struct cifs_tcon *tcon,
426 bool delete_file, __u16 fid,
427 __u32 pid_of_opener);
428 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
429 const char *file_name, __u64 size,
430 struct cifs_sb_info *cifs_sb, bool set_allocation,
431 struct dentry *dentry);
432 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
433 struct cifsFileInfo *cfile, __u64 size,
434 bool set_allocation);
435
436 struct cifs_unix_set_info_args {
437 __u64 ctime;
438 __u64 atime;
439 __u64 mtime;
440 __u64 mode;
441 kuid_t uid;
442 kgid_t gid;
443 dev_t device;
444 };
445
446 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
447 struct cifs_tcon *tcon,
448 const struct cifs_unix_set_info_args *args,
449 u16 fid, u32 pid_of_opener);
450
451 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
452 struct cifs_tcon *tcon, const char *file_name,
453 const struct cifs_unix_set_info_args *args,
454 const struct nls_table *nls_codepage,
455 int remap);
456
457 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
458 umode_t mode, struct cifs_tcon *tcon,
459 const char *name, struct cifs_sb_info *cifs_sb);
460 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
461 const char *name, struct cifs_sb_info *cifs_sb);
462 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
463 const char *name, __u16 type,
464 const struct nls_table *nls_codepage,
465 int remap_special_chars);
466 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
467 const char *name, struct cifs_sb_info *cifs_sb,
468 struct dentry *dentry);
469 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
470 struct dentry *source_dentry,
471 const char *from_name, const char *to_name,
472 struct cifs_sb_info *cifs_sb);
473 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
474 int netfid, const char *target_name,
475 const struct nls_table *nls_codepage,
476 int remap_special_chars);
477 int CIFSCreateHardLink(const unsigned int xid,
478 struct cifs_tcon *tcon,
479 struct dentry *source_dentry,
480 const char *from_name, const char *to_name,
481 struct cifs_sb_info *cifs_sb);
482 extern int CIFSUnixCreateHardLink(const unsigned int xid,
483 struct cifs_tcon *tcon,
484 const char *fromName, const char *toName,
485 const struct nls_table *nls_codepage,
486 int remap_special_chars);
487 extern int CIFSUnixCreateSymLink(const unsigned int xid,
488 struct cifs_tcon *tcon,
489 const char *fromName, const char *toName,
490 const struct nls_table *nls_codepage, int remap);
491 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
492 struct cifs_tcon *tcon,
493 const unsigned char *searchName, char **syminfo,
494 const struct nls_table *nls_codepage, int remap);
495 extern int cifs_query_reparse_point(const unsigned int xid,
496 struct cifs_tcon *tcon,
497 struct cifs_sb_info *cifs_sb,
498 const char *full_path,
499 u32 *tag, struct kvec *rsp,
500 int *rsp_buftype);
501 extern struct inode *cifs_create_reparse_inode(struct cifs_open_info_data *data,
502 struct super_block *sb,
503 const unsigned int xid,
504 struct cifs_tcon *tcon,
505 const char *full_path,
506 bool directory,
507 struct kvec *reparse_iov,
508 struct kvec *xattr_iov);
509 extern int CIFSSMB_set_compression(const unsigned int xid,
510 struct cifs_tcon *tcon, __u16 fid);
511 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
512 int *oplock, FILE_ALL_INFO *buf);
513 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
514 const char *fileName, const int disposition,
515 const int access_flags, const int omode,
516 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
517 const struct nls_table *nls_codepage, int remap);
518 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
519 u32 posix_flags, __u64 mode, __u16 *netfid,
520 FILE_UNIX_BASIC_INFO *pRetData,
521 __u32 *pOplock, const char *name,
522 const struct nls_table *nls_codepage, int remap);
523 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
524 const int smb_file_id);
525
526 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
527 const int smb_file_id);
528
529 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
530 unsigned int *nbytes, char **buf,
531 int *return_buf_type);
532 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
533 unsigned int *nbytes, const char *buf);
534 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
535 unsigned int *nbytes, struct kvec *iov, const int nvec);
536 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
537 const char *search_name, __u64 *inode_number,
538 const struct nls_table *nls_codepage,
539 int remap);
540
541 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
542 const __u16 netfid, const __u8 lock_type,
543 const __u32 num_unlock, const __u32 num_lock,
544 LOCKING_ANDX_RANGE *buf);
545 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
546 const __u16 netfid, const __u32 netpid, const __u64 len,
547 const __u64 offset, const __u32 numUnlock,
548 const __u32 numLock, const __u8 lockType,
549 const bool waitFlag, const __u8 oplock_level);
550 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
551 const __u16 smb_file_id, const __u32 netpid,
552 const loff_t start_offset, const __u64 len,
553 struct file_lock *, const __u16 lock_type,
554 const bool waitFlag);
555 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
556 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
557 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
558
559 extern struct cifs_ses *sesInfoAlloc(void);
560 extern void sesInfoFree(struct cifs_ses *);
561 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
562 enum smb3_tcon_ref_trace trace);
563 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
564
565 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
566 __u32 *pexpected_response_sequence_number);
567 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
568 __u32 *);
569 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
570 extern int cifs_verify_signature(struct smb_rqst *rqst,
571 struct TCP_Server_Info *server,
572 __u32 expected_sequence_number);
573 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
574 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
575 extern int calc_seckey(struct cifs_ses *);
576 extern int generate_smb30signingkey(struct cifs_ses *ses,
577 struct TCP_Server_Info *server);
578 extern int generate_smb311signingkey(struct cifs_ses *ses,
579 struct TCP_Server_Info *server);
580
581 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
582 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
583 const unsigned char *searchName,
584 const unsigned char *ea_name, char *EAData,
585 size_t bufsize, struct cifs_sb_info *cifs_sb);
586 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
587 const char *fileName, const char *ea_name,
588 const void *ea_value, const __u16 ea_value_len,
589 const struct nls_table *nls_codepage,
590 struct cifs_sb_info *cifs_sb);
591 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
592 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info);
593 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
594 struct smb_ntsd *pntsd, __u32 len, int aclflag);
595 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
596 const unsigned char *searchName,
597 struct posix_acl **acl, const int acl_type,
598 const struct nls_table *nls_codepage, int remap);
599 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
600 const unsigned char *fileName,
601 const struct posix_acl *acl, const int acl_type,
602 const struct nls_table *nls_codepage, int remap);
603 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
604 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
605 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
606 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
607 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
608 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
609 struct cifs_sb_info *cifs_sb,
610 struct cifs_fattr *fattr,
611 const unsigned char *path);
612 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
613 const struct nls_table *codepage);
614
615 extern struct TCP_Server_Info *
616 cifs_find_tcp_session(struct smb3_fs_context *ctx);
617
618 void __cifs_put_smb_ses(struct cifs_ses *ses);
619
620 extern struct cifs_ses *
621 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
622
623 int cifs_async_readv(struct cifs_io_subrequest *rdata);
624 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
625
626 void cifs_async_writev(struct cifs_io_subrequest *wdata);
627 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
628 struct cifs_sb_info *cifs_sb,
629 const unsigned char *path, char *pbuf,
630 unsigned int *pbytes_read);
631 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
632 struct cifs_sb_info *cifs_sb,
633 const unsigned char *path, char *pbuf,
634 unsigned int *pbytes_written);
635 int __cifs_calc_signature(struct smb_rqst *rqst,
636 struct TCP_Server_Info *server, char *signature,
637 struct shash_desc *shash);
638 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
639 enum securityEnum);
640
641 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
642 void cifs_free_hash(struct shash_desc **sdesc);
643
644 int cifs_try_adding_channels(struct cifs_ses *ses);
645 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
646 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
647
648 int
649 cifs_ses_get_chan_index(struct cifs_ses *ses,
650 struct TCP_Server_Info *server);
651 void
652 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
653 struct TCP_Server_Info *server);
654 void
655 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
656 struct TCP_Server_Info *server);
657 void
658 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
659 struct TCP_Server_Info *server);
660 void
661 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
662 struct TCP_Server_Info *server);
663 bool
664 cifs_chan_needs_reconnect(struct cifs_ses *ses,
665 struct TCP_Server_Info *server);
666 bool
667 cifs_chan_is_iface_active(struct cifs_ses *ses,
668 struct TCP_Server_Info *server);
669 void
670 cifs_disable_secondary_channels(struct cifs_ses *ses);
671 void
672 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
673 int
674 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
675
676 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
677 int copy_path_name(char *dst, const char *src);
678 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
679 int resp_buftype,
680 struct cifs_search_info *srch_inf);
681
682 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
683 void cifs_put_tcp_super(struct super_block *sb);
684 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
685 char *extract_hostname(const char *unc);
686 char *extract_sharename(const char *unc);
687 int parse_reparse_point(struct reparse_data_buffer *buf,
688 u32 plen, struct cifs_sb_info *cifs_sb,
689 const char *full_path,
690 struct cifs_open_info_data *data);
691 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
692 struct dentry *dentry, struct cifs_tcon *tcon,
693 const char *full_path, umode_t mode, dev_t dev,
694 const char *symname);
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 *host, size_t hostlen,
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
cifs_put_smb_ses(struct cifs_ses * ses)740 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
741 {
742 __cifs_put_smb_ses(ses);
743 }
744
745 /* Get an active reference of @ses and its children.
746 *
747 * NOTE: make sure to call this function when incrementing reference count of
748 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
749 * will also get its reference count incremented.
750 *
751 * cifs_put_smb_ses() will put all references, so call it when you're done.
752 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)753 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
754 {
755 lockdep_assert_held(&cifs_tcp_ses_lock);
756 ses->ses_count++;
757 }
758
dfs_src_pathname_equal(const char * s1,const char * s2)759 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
760 {
761 if (strlen(s1) != strlen(s2))
762 return false;
763 for (; *s1; s1++, s2++) {
764 if (*s1 == '/' || *s1 == '\\') {
765 if (*s2 != '/' && *s2 != '\\')
766 return false;
767 } else if (tolower(*s1) != tolower(*s2))
768 return false;
769 }
770 return true;
771 }
772
release_mid(struct mid_q_entry * mid)773 static inline void release_mid(struct mid_q_entry *mid)
774 {
775 kref_put(&mid->refcount, __release_mid);
776 }
777
cifs_free_open_info(struct cifs_open_info_data * data)778 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
779 {
780 kfree(data->symlink_target);
781 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
782 memset(data, 0, sizeof(*data));
783 }
784
785 #endif /* _CIFSPROTO_H */
786