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 smb2_query_server_interfaces(struct work_struct *work);
140 void
141 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
142 bool all_channels);
143 void
144 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
145 bool mark_smb_session);
146 extern int cifs_reconnect(struct TCP_Server_Info *server,
147 bool mark_smb_session);
148 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
149 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
150 extern bool backup_cred(struct cifs_sb_info *);
151 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
152 bool from_readdir);
153 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
154 unsigned int bytes_written);
155 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
156 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
157 int flags,
158 struct cifsFileInfo **ret_file);
159 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
160 int flags,
161 struct cifsFileInfo **ret_file);
162 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
163 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
164 struct cifsFileInfo **ret_file);
165 extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode,
166 struct file *file);
167 extern unsigned int smbCalcSize(void *buf);
168 extern int decode_negTokenInit(unsigned char *security_blob, int length,
169 struct TCP_Server_Info *server);
170 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
171 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
172 extern int map_smb_to_linux_error(char *buf, bool logErr);
173 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
174 extern void header_assemble(struct smb_hdr *, char /* command */ ,
175 const struct cifs_tcon *, int /* length of
176 fixed section (word count) in two byte units */);
177 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
178 struct cifs_ses *ses,
179 void **request_buf);
180 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
181 enum securityEnum requested);
182 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
183 struct TCP_Server_Info *server,
184 const struct nls_table *nls_cp);
185 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
186 extern u64 cifs_UnixTimeToNT(struct timespec64);
187 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
188 int offset);
189 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
190 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
191 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
192 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
193 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
194 struct file_lock *flock, const unsigned int xid);
195 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
196
197 extern void cifs_down_write(struct rw_semaphore *sem);
198 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
199 struct tcon_link *tlink, __u32 oplock,
200 const char *symlink_target);
201 extern int cifs_posix_open(const char *full_path, struct inode **inode,
202 struct super_block *sb, int mode,
203 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
204 unsigned int xid);
205 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
206 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
207 FILE_UNIX_BASIC_INFO *info,
208 struct cifs_sb_info *cifs_sb);
209 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
210 struct cifs_sb_info *);
211 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
212 bool from_readdir);
213 extern struct inode *cifs_iget(struct super_block *sb,
214 struct cifs_fattr *fattr);
215
216 int cifs_get_inode_info(struct inode **inode, const char *full_path,
217 struct cifs_open_info_data *data, struct super_block *sb, int xid,
218 const struct cifs_fid *fid);
219 extern int smb311_posix_get_inode_info(struct inode **inode,
220 const char *full_path,
221 struct cifs_open_info_data *data,
222 struct super_block *sb,
223 const unsigned int xid);
224 extern int cifs_get_inode_info_unix(struct inode **pinode,
225 const unsigned char *search_path,
226 struct super_block *sb, unsigned int xid);
227 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
228 unsigned int xid, const char *full_path, __u32 dosattr);
229 extern int cifs_rename_pending_delete(const char *full_path,
230 struct dentry *dentry,
231 const unsigned int xid);
232 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
233 struct cifs_fattr *fattr, uint sidtype);
234 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
235 struct cifs_fattr *fattr, struct inode *inode,
236 bool get_mode_from_special_sid,
237 const char *path, const struct cifs_fid *pfid);
238 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
239 kuid_t uid, kgid_t gid);
240 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
241 const char *path, u32 *plen, u32 info);
242 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
243 const struct cifs_fid *pfid, u32 *plen, u32 info);
244 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
245 struct dentry *dentry, int type);
246 extern int cifs_set_acl(struct mnt_idmap *idmap,
247 struct dentry *dentry, struct posix_acl *acl, int type);
248 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
249 const char *path, int flag);
250 extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
251 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
252 bool posix,
253 __u64 nmode);
254 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
255
256 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
257 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
258 unsigned int to_read);
259 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
260 size_t to_read);
261 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
262 struct page *page,
263 unsigned int page_offset,
264 unsigned int to_read);
265 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
266 struct iov_iter *iter,
267 unsigned int to_read);
268 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
269 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
270 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
271 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
272 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
273 extern int cifs_match_super(struct super_block *, void *);
274 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
275 extern void cifs_umount(struct cifs_sb_info *);
276 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
277 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
278
279 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
280 __u64 length, __u8 type, __u16 flags,
281 struct cifsLockInfo **conf_lock,
282 int rw_check);
283 extern void cifs_add_pending_open(struct cifs_fid *fid,
284 struct tcon_link *tlink,
285 struct cifs_pending_open *open);
286 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
287 struct tcon_link *tlink,
288 struct cifs_pending_open *open);
289 extern void cifs_del_pending_open(struct cifs_pending_open *open);
290
291 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
292 struct cifs_deferred_close **dclose);
293
294 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
295 struct cifs_deferred_close *dclose);
296
297 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
298
299 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
300
301 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
302
303 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
304 const char *path);
305
306 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
307 const char *path);
308
309 extern struct TCP_Server_Info *
310 cifs_get_tcp_session(struct smb3_fs_context *ctx,
311 struct TCP_Server_Info *primary_server);
312 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
313 int from_reconnect);
314 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
315
316 extern void cifs_release_automount_timer(void);
317
318 void cifs_proc_init(void);
319 void cifs_proc_clean(void);
320
321 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
322 extern void cifs_free_llist(struct list_head *llist);
323 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
324
325 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
326 const struct nls_table *nlsc);
327
328 extern int cifs_negotiate_protocol(const unsigned int xid,
329 struct cifs_ses *ses,
330 struct TCP_Server_Info *server);
331 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
332 struct TCP_Server_Info *server,
333 struct nls_table *nls_info);
334 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
335 extern int CIFSSMBNegotiate(const unsigned int xid,
336 struct cifs_ses *ses,
337 struct TCP_Server_Info *server);
338
339 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
340 const char *tree, struct cifs_tcon *tcon,
341 const struct nls_table *);
342
343 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
344 const char *searchName, struct cifs_sb_info *cifs_sb,
345 __u16 *searchHandle, __u16 search_flags,
346 struct cifs_search_info *psrch_inf,
347 bool msearch);
348
349 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
350 __u16 searchHandle, __u16 search_flags,
351 struct cifs_search_info *psrch_inf);
352
353 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
354 const __u16 search_handle);
355
356 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
357 u16 netfid, FILE_ALL_INFO *pFindData);
358 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
359 const char *search_Name, FILE_ALL_INFO *data,
360 int legacy /* whether to use old info level */,
361 const struct nls_table *nls_codepage, int remap);
362 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
363 const char *search_name, FILE_ALL_INFO *data,
364 const struct nls_table *nls_codepage, int remap);
365
366 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
367 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
368 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
369 struct cifs_tcon *tcon,
370 const unsigned char *searchName,
371 FILE_UNIX_BASIC_INFO *pFindData,
372 const struct nls_table *nls_codepage, int remap);
373
374 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
375 const char *search_name,
376 struct dfs_info3_param **target_nodes,
377 unsigned int *num_of_nodes,
378 const struct nls_table *nls_codepage, int remap);
379
380 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
381 unsigned int *num_of_nodes,
382 struct dfs_info3_param **target_nodes,
383 const struct nls_table *nls_codepage, int remap,
384 const char *searchName, bool is_unicode);
385 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
386 struct cifs_sb_info *cifs_sb,
387 struct smb3_fs_context *ctx);
388 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
389 struct kstatfs *FSData);
390 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
391 struct kstatfs *FSData);
392 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
393 __u64 cap);
394
395 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
396 struct cifs_tcon *tcon);
397 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
398 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
399 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
400 struct kstatfs *FSData);
401
402 extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon,
403 const char *fileName, __le32 attributes, __le64 write_time,
404 const struct nls_table *nls_codepage,
405 struct cifs_sb_info *cifs_sb);
406 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
407 const char *fileName, const FILE_BASIC_INFO *data,
408 const struct nls_table *nls_codepage,
409 struct cifs_sb_info *cifs_sb);
410 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
411 const FILE_BASIC_INFO *data, __u16 fid,
412 __u32 pid_of_opener);
413 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
414 struct cifs_tcon *tcon,
415 bool delete_file, __u16 fid,
416 __u32 pid_of_opener);
417 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
418 const char *file_name, __u64 size,
419 struct cifs_sb_info *cifs_sb, bool set_allocation,
420 struct dentry *dentry);
421 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
422 struct cifsFileInfo *cfile, __u64 size,
423 bool set_allocation);
424
425 struct cifs_unix_set_info_args {
426 __u64 ctime;
427 __u64 atime;
428 __u64 mtime;
429 __u64 mode;
430 kuid_t uid;
431 kgid_t gid;
432 dev_t device;
433 };
434
435 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
436 struct cifs_tcon *tcon,
437 const struct cifs_unix_set_info_args *args,
438 u16 fid, u32 pid_of_opener);
439
440 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
441 struct cifs_tcon *tcon, const char *file_name,
442 const struct cifs_unix_set_info_args *args,
443 const struct nls_table *nls_codepage,
444 int remap);
445
446 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
447 umode_t mode, struct cifs_tcon *tcon,
448 const char *name, struct cifs_sb_info *cifs_sb);
449 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
450 const char *name, struct cifs_sb_info *cifs_sb);
451 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
452 const char *name, __u16 type,
453 const struct nls_table *nls_codepage,
454 int remap_special_chars);
455 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
456 const char *name, struct cifs_sb_info *cifs_sb,
457 struct dentry *dentry);
458 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
459 struct dentry *source_dentry,
460 const char *from_name, const char *to_name,
461 struct cifs_sb_info *cifs_sb);
462 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
463 int netfid, const char *target_name,
464 const struct nls_table *nls_codepage,
465 int remap_special_chars);
466 int CIFSCreateHardLink(const unsigned int xid,
467 struct cifs_tcon *tcon,
468 struct dentry *source_dentry,
469 const char *from_name, const char *to_name,
470 struct cifs_sb_info *cifs_sb);
471 extern int CIFSUnixCreateHardLink(const unsigned int xid,
472 struct cifs_tcon *tcon,
473 const char *fromName, const char *toName,
474 const struct nls_table *nls_codepage,
475 int remap_special_chars);
476 extern int CIFSUnixCreateSymLink(const unsigned int xid,
477 struct cifs_tcon *tcon,
478 const char *fromName, const char *toName,
479 const struct nls_table *nls_codepage, int remap);
480 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
481 struct cifs_tcon *tcon,
482 const unsigned char *searchName, char **syminfo,
483 const struct nls_table *nls_codepage, int remap);
484 extern int cifs_query_reparse_point(const unsigned int xid,
485 struct cifs_tcon *tcon,
486 struct cifs_sb_info *cifs_sb,
487 const char *full_path,
488 u32 *tag, struct kvec *rsp,
489 int *rsp_buftype);
490 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
491 __u16 fid, char **symlinkinfo,
492 const struct nls_table *nls_codepage);
493 extern int CIFSSMB_set_compression(const unsigned int xid,
494 struct cifs_tcon *tcon, __u16 fid);
495 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
496 int *oplock, FILE_ALL_INFO *buf);
497 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
498 const char *fileName, const int disposition,
499 const int access_flags, const int omode,
500 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
501 const struct nls_table *nls_codepage, int remap);
502 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
503 u32 posix_flags, __u64 mode, __u16 *netfid,
504 FILE_UNIX_BASIC_INFO *pRetData,
505 __u32 *pOplock, const char *name,
506 const struct nls_table *nls_codepage, int remap);
507 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
508 const int smb_file_id);
509
510 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
511 const int smb_file_id);
512
513 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
514 unsigned int *nbytes, char **buf,
515 int *return_buf_type);
516 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
517 unsigned int *nbytes, const char *buf);
518 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
519 unsigned int *nbytes, struct kvec *iov, const int nvec);
520 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
521 const char *search_name, __u64 *inode_number,
522 const struct nls_table *nls_codepage,
523 int remap);
524
525 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
526 const __u16 netfid, const __u8 lock_type,
527 const __u32 num_unlock, const __u32 num_lock,
528 LOCKING_ANDX_RANGE *buf);
529 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
530 const __u16 netfid, const __u32 netpid, const __u64 len,
531 const __u64 offset, const __u32 numUnlock,
532 const __u32 numLock, const __u8 lockType,
533 const bool waitFlag, const __u8 oplock_level);
534 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
535 const __u16 smb_file_id, const __u32 netpid,
536 const loff_t start_offset, const __u64 len,
537 struct file_lock *, const __u16 lock_type,
538 const bool waitFlag);
539 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
540 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
541 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
542
543 extern struct cifs_ses *sesInfoAlloc(void);
544 extern void sesInfoFree(struct cifs_ses *);
545 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
546 enum smb3_tcon_ref_trace trace);
547 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
548
549 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
550 __u32 *pexpected_response_sequence_number);
551 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
552 __u32 *);
553 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
554 extern int cifs_verify_signature(struct smb_rqst *rqst,
555 struct TCP_Server_Info *server,
556 __u32 expected_sequence_number);
557 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
558 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
559 extern int calc_seckey(struct cifs_ses *);
560 extern int generate_smb30signingkey(struct cifs_ses *ses,
561 struct TCP_Server_Info *server);
562 extern int generate_smb311signingkey(struct cifs_ses *ses,
563 struct TCP_Server_Info *server);
564
565 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
566 extern int CIFSSMBCopy(unsigned int xid,
567 struct cifs_tcon *source_tcon,
568 const char *fromName,
569 const __u16 target_tid,
570 const char *toName, const int flags,
571 const struct nls_table *nls_codepage,
572 int remap_special_chars);
573 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
574 const unsigned char *searchName,
575 const unsigned char *ea_name, char *EAData,
576 size_t bufsize, struct cifs_sb_info *cifs_sb);
577 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
578 const char *fileName, const char *ea_name,
579 const void *ea_value, const __u16 ea_value_len,
580 const struct nls_table *nls_codepage,
581 struct cifs_sb_info *cifs_sb);
582 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
583 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info);
584 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
585 struct smb_ntsd *pntsd, __u32 len, int aclflag);
586 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
587 const unsigned char *searchName,
588 struct posix_acl **acl, const int acl_type,
589 const struct nls_table *nls_codepage, int remap);
590 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
591 const unsigned char *fileName,
592 const struct posix_acl *acl, const int acl_type,
593 const struct nls_table *nls_codepage, int remap);
594 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
595 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
596 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
597 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
598 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
599 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
600 struct cifs_sb_info *cifs_sb,
601 struct cifs_fattr *fattr,
602 const unsigned char *path);
603 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
604 const struct nls_table *codepage);
605
606 extern struct TCP_Server_Info *
607 cifs_find_tcp_session(struct smb3_fs_context *ctx);
608
609 void __cifs_put_smb_ses(struct cifs_ses *ses);
610
611 extern struct cifs_ses *
612 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
613
614 void cifs_readdata_release(struct kref *refcount);
615 int cifs_async_readv(struct cifs_readdata *rdata);
616 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
617
618 int cifs_async_writev(struct cifs_writedata *wdata,
619 void (*release)(struct kref *kref));
620 void cifs_writev_complete(struct work_struct *work);
621 struct cifs_writedata *cifs_writedata_alloc(work_func_t complete);
622 void cifs_writedata_release(struct kref *refcount);
623 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
624 struct cifs_sb_info *cifs_sb,
625 const unsigned char *path, char *pbuf,
626 unsigned int *pbytes_read);
627 int cifs_create_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_written);
631 int __cifs_calc_signature(struct smb_rqst *rqst,
632 struct TCP_Server_Info *server, char *signature,
633 struct shash_desc *shash);
634 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
635 enum securityEnum);
636 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
637 void cifs_aio_ctx_release(struct kref *refcount);
638
639 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
640 void cifs_free_hash(struct shash_desc **sdesc);
641
642 struct cifs_chan *
643 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
644 int cifs_try_adding_channels(struct cifs_ses *ses);
645 bool is_server_using_iface(struct TCP_Server_Info *server,
646 struct cifs_server_iface *iface);
647 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
648 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
649
650 int
651 cifs_ses_get_chan_index(struct cifs_ses *ses,
652 struct TCP_Server_Info *server);
653 void
654 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
655 struct TCP_Server_Info *server);
656 void
657 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
658 struct TCP_Server_Info *server);
659 bool
660 cifs_chan_in_reconnect(struct cifs_ses *ses,
661 struct TCP_Server_Info *server);
662 void
663 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
664 struct TCP_Server_Info *server);
665 void
666 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
667 struct TCP_Server_Info *server);
668 bool
669 cifs_chan_needs_reconnect(struct cifs_ses *ses,
670 struct TCP_Server_Info *server);
671 bool
672 cifs_chan_is_iface_active(struct cifs_ses *ses,
673 struct TCP_Server_Info *server);
674 void
675 cifs_disable_secondary_channels(struct cifs_ses *ses);
676 void
677 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
678 int
679 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
680
681 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
682 int copy_path_name(char *dst, const char *src);
683 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
684 int resp_buftype,
685 struct cifs_search_info *srch_inf);
686
687 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
688 void cifs_put_tcp_super(struct super_block *sb);
689 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
690 char *extract_hostname(const char *unc);
691 char *extract_sharename(const char *unc);
692 int parse_reparse_point(struct reparse_data_buffer *buf,
693 u32 plen, struct cifs_sb_info *cifs_sb,
694 const char *full_path,
695 bool unicode, struct cifs_open_info_data *data);
696 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
697 struct dentry *dentry, struct cifs_tcon *tcon,
698 const char *full_path, umode_t mode, dev_t dev);
699 umode_t wire_mode_to_posix(u32 wire, bool is_dir);
700
701 #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)702 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
703 const char *old_path,
704 const struct nls_table *nls_codepage,
705 struct dfs_info3_param *referral, int remap)
706 {
707 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
708 referral, NULL);
709 }
710
711 int match_target_ip(struct TCP_Server_Info *server,
712 const char *share, size_t share_len,
713 bool *result);
714 int cifs_inval_name_dfs_link_error(const unsigned int xid,
715 struct cifs_tcon *tcon,
716 struct cifs_sb_info *cifs_sb,
717 const char *full_path,
718 bool *islink);
719 #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)720 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
721 struct cifs_tcon *tcon,
722 struct cifs_sb_info *cifs_sb,
723 const char *full_path,
724 bool *islink)
725 {
726 *islink = false;
727 return 0;
728 }
729 #endif
730
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)731 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
732 {
733 if (cifs_sb && (backup_cred(cifs_sb)))
734 return options | CREATE_OPEN_BACKUP_INTENT;
735 else
736 return options;
737 }
738
739 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
740
cifs_put_smb_ses(struct cifs_ses * ses)741 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
742 {
743 __cifs_put_smb_ses(ses);
744 }
745
746 /* Get an active reference of @ses and its children.
747 *
748 * NOTE: make sure to call this function when incrementing reference count of
749 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
750 * will also get its reference count incremented.
751 *
752 * cifs_put_smb_ses() will put all references, so call it when you're done.
753 */
cifs_smb_ses_inc_refcount(struct cifs_ses * ses)754 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
755 {
756 lockdep_assert_held(&cifs_tcp_ses_lock);
757 ses->ses_count++;
758 }
759
dfs_src_pathname_equal(const char * s1,const char * s2)760 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
761 {
762 if (strlen(s1) != strlen(s2))
763 return false;
764 for (; *s1; s1++, s2++) {
765 if (*s1 == '/' || *s1 == '\\') {
766 if (*s2 != '/' && *s2 != '\\')
767 return false;
768 } else if (tolower(*s1) != tolower(*s2))
769 return false;
770 }
771 return true;
772 }
773
release_mid(struct mid_q_entry * mid)774 static inline void release_mid(struct mid_q_entry *mid)
775 {
776 kref_put(&mid->refcount, __release_mid);
777 }
778
cifs_free_open_info(struct cifs_open_info_data * data)779 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
780 {
781 kfree(data->symlink_target);
782 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
783 memset(data, 0, sizeof(*data));
784 }
785
786 #endif /* _CIFSPROTO_H */
787