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