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1 /*
2  *   fs/cifs/cifsproto.h
3  *
4  *   Copyright (c) International Business Machines  Corp., 2002,2008
5  *   Author(s): Steve French (sfrench@us.ibm.com)
6  *
7  *   This library is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU Lesser General Public License as published
9  *   by the Free Software Foundation; either version 2.1 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This library is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
15  *   the GNU Lesser General Public License for more details.
16  *
17  *   You should have received a copy of the GNU Lesser General Public License
18  *   along with this library; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 #ifndef _CIFSPROTO_H
22 #define _CIFSPROTO_H
23 #include <linux/nls.h>
24 #include "trace.h"
25 #ifdef CONFIG_CIFS_DFS_UPCALL
26 #include "dfs_cache.h"
27 #endif
28 
29 struct statfs;
30 struct smb_vol;
31 struct smb_rqst;
32 
33 /*
34  *****************************************************************
35  * All Prototypes
36  *****************************************************************
37  */
38 
39 extern struct smb_hdr *cifs_buf_get(void);
40 extern void cifs_buf_release(void *);
41 extern struct smb_hdr *cifs_small_buf_get(void);
42 extern void cifs_small_buf_release(void *);
43 extern void free_rsp_buf(int, void *);
44 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
45 			unsigned int /* length */);
46 extern unsigned int _get_xid(void);
47 extern void _free_xid(unsigned int);
48 #define get_xid()							\
49 ({									\
50 	unsigned int __xid = _get_xid();				\
51 	cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n",		\
52 		 __func__, __xid,					\
53 		 from_kuid(&init_user_ns, current_fsuid()));		\
54 	trace_smb3_enter(__xid, __func__);				\
55 	__xid;								\
56 })
57 
58 #define free_xid(curr_xid)						\
59 do {									\
60 	_free_xid(curr_xid);						\
61 	cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n",		\
62 		 __func__, curr_xid, (int)rc);				\
63 	if (rc)								\
64 		trace_smb3_exit_err(curr_xid, __func__, (int)rc);	\
65 	else								\
66 		trace_smb3_exit_done(curr_xid, __func__);		\
67 } while (0)
68 extern int init_cifs_idmap(void);
69 extern void exit_cifs_idmap(void);
70 extern int init_cifs_spnego(void);
71 extern void exit_cifs_spnego(void);
72 extern char *build_path_from_dentry(struct dentry *);
73 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
74 						    bool prefix);
75 extern char *cifs_build_path_to_root(struct smb_vol *vol,
76 				     struct cifs_sb_info *cifs_sb,
77 				     struct cifs_tcon *tcon,
78 				     int add_treename);
79 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
80 extern char *cifs_compose_mount_options(const char *sb_mountdata,
81 		const char *fullpath, const struct dfs_info3_param *ref,
82 		char **devname);
83 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
84 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
85 					struct TCP_Server_Info *server);
86 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
87 extern void cifs_delete_mid(struct mid_q_entry *mid);
88 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
89 extern void cifs_wake_up_task(struct mid_q_entry *mid);
90 extern int cifs_handle_standard(struct TCP_Server_Info *server,
91 				struct mid_q_entry *mid);
92 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
93 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
94 extern int cifs_call_async(struct TCP_Server_Info *server,
95 			struct smb_rqst *rqst,
96 			mid_receive_t *receive, mid_callback_t *callback,
97 			mid_handle_t *handle, void *cbdata, const int flags,
98 			const struct cifs_credits *exist_credits);
99 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
100 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
101 			  struct TCP_Server_Info *server,
102 			  struct smb_rqst *rqst, int *resp_buf_type,
103 			  const int flags, struct kvec *resp_iov);
104 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
105 			      struct TCP_Server_Info *server,
106 			      const int flags, const int num_rqst,
107 			      struct smb_rqst *rqst, int *resp_buf_type,
108 			      struct kvec *resp_iov);
109 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
110 			struct smb_hdr * /* input */ ,
111 			struct smb_hdr * /* out */ ,
112 			int * /* bytes returned */ , const int);
113 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
114 			    char *in_buf, int flags);
115 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
116 				struct TCP_Server_Info *,
117 				struct smb_rqst *);
118 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
119 						struct smb_rqst *);
120 extern int cifs_check_receive(struct mid_q_entry *mid,
121 			struct TCP_Server_Info *server, bool log_error);
122 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
123 				 unsigned int size, unsigned int *num,
124 				 struct cifs_credits *credits);
125 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
126 			struct kvec *, int /* nvec to send */,
127 			int * /* type of buf returned */, const int flags,
128 			struct kvec * /* resp vec */);
129 extern int SendReceiveBlockingLock(const unsigned int xid,
130 			struct cifs_tcon *ptcon,
131 			struct smb_hdr *in_buf ,
132 			struct smb_hdr *out_buf,
133 			int *bytes_returned);
134 extern int cifs_reconnect(struct TCP_Server_Info *server);
135 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
136 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
137 extern bool backup_cred(struct cifs_sb_info *);
138 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
139 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
140 			    unsigned int bytes_written);
141 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
142 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
143 				  int flags,
144 				  struct cifsFileInfo **ret_file);
145 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
146 				  int flags,
147 				  struct cifsFileInfo **ret_file);
148 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
149 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
150 				  struct cifsFileInfo **ret_file);
151 extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
152 extern int decode_negTokenInit(unsigned char *security_blob, int length,
153 			struct TCP_Server_Info *server);
154 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
155 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
156 extern int map_smb_to_linux_error(char *buf, bool logErr);
157 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
158 extern void header_assemble(struct smb_hdr *, char /* command */ ,
159 			    const struct cifs_tcon *, int /* length of
160 			    fixed section (word count) in two byte units */);
161 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
162 				struct cifs_ses *ses,
163 				void **request_buf);
164 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
165 				enum securityEnum requested);
166 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
167 			  const struct nls_table *nls_cp);
168 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
169 extern u64 cifs_UnixTimeToNT(struct timespec64);
170 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
171 				      int offset);
172 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
173 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
174 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
175 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
176 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
177 			     struct file_lock *flock, const unsigned int xid);
178 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
179 
180 extern void cifs_down_write(struct rw_semaphore *sem);
181 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
182 					      struct file *file,
183 					      struct tcon_link *tlink,
184 					      __u32 oplock);
185 extern int cifs_posix_open(char *full_path, struct inode **inode,
186 			   struct super_block *sb, int mode,
187 			   unsigned int f_flags, __u32 *oplock, __u16 *netfid,
188 			   unsigned int xid);
189 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
190 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
191 				     FILE_UNIX_BASIC_INFO *info,
192 				     struct cifs_sb_info *cifs_sb);
193 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
194 					struct cifs_sb_info *);
195 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
196 extern struct inode *cifs_iget(struct super_block *sb,
197 			       struct cifs_fattr *fattr);
198 
199 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
200 			       FILE_ALL_INFO *data, struct super_block *sb,
201 			       int xid, const struct cifs_fid *fid);
202 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
203 			struct super_block *sb, unsigned int xid);
204 extern int cifs_get_inode_info_unix(struct inode **pinode,
205 			const unsigned char *search_path,
206 			struct super_block *sb, unsigned int xid);
207 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
208 			      unsigned int xid, char *full_path, __u32 dosattr);
209 extern int cifs_rename_pending_delete(const char *full_path,
210 				      struct dentry *dentry,
211 				      const unsigned int xid);
212 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
213 				struct cifs_fattr *fattr, uint sidtype);
214 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
215 			      struct cifs_fattr *fattr, struct inode *inode,
216 			      bool get_mode_from_special_sid,
217 			      const char *path, const struct cifs_fid *pfid);
218 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
219 					kuid_t, kgid_t);
220 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
221 					const char *, u32 *);
222 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
223 						const struct cifs_fid *, u32 *);
224 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
225 				const char *, int);
226 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
227 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
228 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
229 
230 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
231 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
232 			         unsigned int to_read);
233 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
234 					struct page *page,
235 					unsigned int page_offset,
236 					unsigned int to_read);
237 extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
238 			       struct cifs_sb_info *cifs_sb);
239 extern int cifs_match_super(struct super_block *, void *);
240 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
241 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
242 					    const char *devname, bool is_smb3);
243 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol);
244 extern void cifs_umount(struct cifs_sb_info *);
245 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
246 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
247 
248 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
249 				    __u64 length, __u8 type, __u16 flags,
250 				    struct cifsLockInfo **conf_lock,
251 				    int rw_check);
252 extern void cifs_add_pending_open(struct cifs_fid *fid,
253 				  struct tcon_link *tlink,
254 				  struct cifs_pending_open *open);
255 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
256 					 struct tcon_link *tlink,
257 					 struct cifs_pending_open *open);
258 extern void cifs_del_pending_open(struct cifs_pending_open *open);
259 extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb_vol *vol);
260 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
261 				 int from_reconnect);
262 extern void cifs_put_tcon(struct cifs_tcon *tcon);
263 
264 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
265 extern void cifs_dfs_release_automount_timer(void);
266 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
267 #define cifs_dfs_release_automount_timer()	do { } while (0)
268 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
269 
270 void cifs_proc_init(void);
271 void cifs_proc_clean(void);
272 
273 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
274 extern void cifs_free_llist(struct list_head *llist);
275 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
276 
277 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
278 			     const struct nls_table *nlsc);
279 
280 extern int cifs_negotiate_protocol(const unsigned int xid,
281 				   struct cifs_ses *ses);
282 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
283 			      struct nls_table *nls_info);
284 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
285 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
286 
287 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
288 		    const char *tree, struct cifs_tcon *tcon,
289 		    const struct nls_table *);
290 
291 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
292 		const char *searchName, struct cifs_sb_info *cifs_sb,
293 		__u16 *searchHandle, __u16 search_flags,
294 		struct cifs_search_info *psrch_inf,
295 		bool msearch);
296 
297 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
298 		__u16 searchHandle, __u16 search_flags,
299 		struct cifs_search_info *psrch_inf);
300 
301 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
302 			const __u16 search_handle);
303 
304 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
305 			u16 netfid, FILE_ALL_INFO *pFindData);
306 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
307 			    const char *search_Name, FILE_ALL_INFO *data,
308 			    int legacy /* whether to use old info level */,
309 			    const struct nls_table *nls_codepage, int remap);
310 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
311 			       const char *search_name, FILE_ALL_INFO *data,
312 			       const struct nls_table *nls_codepage, int remap);
313 
314 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
315 			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
316 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
317 			struct cifs_tcon *tcon,
318 			const unsigned char *searchName,
319 			FILE_UNIX_BASIC_INFO *pFindData,
320 			const struct nls_table *nls_codepage, int remap);
321 
322 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
323 			   const char *search_name,
324 			   struct dfs_info3_param **target_nodes,
325 			   unsigned int *num_of_nodes,
326 			   const struct nls_table *nls_codepage, int remap);
327 
328 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
329 			       unsigned int *num_of_nodes,
330 			       struct dfs_info3_param **target_nodes,
331 			       const struct nls_table *nls_codepage, int remap,
332 			       const char *searchName, bool is_unicode);
333 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
334 				 struct cifs_sb_info *cifs_sb,
335 				 struct smb_vol *vol);
336 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
337 			struct kstatfs *FSData);
338 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
339 			struct kstatfs *FSData);
340 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
341 			__u64 cap);
342 
343 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
344 			struct cifs_tcon *tcon);
345 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
346 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
347 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
348 			struct kstatfs *FSData);
349 
350 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 			const char *fileName, const FILE_BASIC_INFO *data,
352 			const struct nls_table *nls_codepage,
353 			struct cifs_sb_info *cifs_sb);
354 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
355 			const FILE_BASIC_INFO *data, __u16 fid,
356 			__u32 pid_of_opener);
357 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
358 				     struct cifs_tcon *tcon,
359 				     bool delete_file, __u16 fid,
360 				     __u32 pid_of_opener);
361 #if 0
362 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
363 			char *fileName, __u16 dos_attributes,
364 			const struct nls_table *nls_codepage);
365 #endif /* possibly unneeded function */
366 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
367 			 const char *file_name, __u64 size,
368 			 struct cifs_sb_info *cifs_sb, bool set_allocation);
369 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
370 			      struct cifsFileInfo *cfile, __u64 size,
371 			      bool set_allocation);
372 
373 struct cifs_unix_set_info_args {
374 	__u64	ctime;
375 	__u64	atime;
376 	__u64	mtime;
377 	__u64	mode;
378 	kuid_t	uid;
379 	kgid_t	gid;
380 	dev_t	device;
381 };
382 
383 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
384 				  struct cifs_tcon *tcon,
385 				  const struct cifs_unix_set_info_args *args,
386 				  u16 fid, u32 pid_of_opener);
387 
388 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
389 				  struct cifs_tcon *tcon, const char *file_name,
390 				  const struct cifs_unix_set_info_args *args,
391 				  const struct nls_table *nls_codepage,
392 				  int remap);
393 
394 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
395 			umode_t mode, struct cifs_tcon *tcon,
396 			const char *name, struct cifs_sb_info *cifs_sb);
397 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
398 			const char *name, struct cifs_sb_info *cifs_sb);
399 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
400 			const char *name, __u16 type,
401 			const struct nls_table *nls_codepage,
402 			int remap_special_chars);
403 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
404 			  const char *name, struct cifs_sb_info *cifs_sb);
405 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
406 			 const char *from_name, const char *to_name,
407 			 struct cifs_sb_info *cifs_sb);
408 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
409 				 int netfid, const char *target_name,
410 				 const struct nls_table *nls_codepage,
411 				 int remap_special_chars);
412 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
413 			      const char *from_name, const char *to_name,
414 			      struct cifs_sb_info *cifs_sb);
415 extern int CIFSUnixCreateHardLink(const unsigned int xid,
416 			struct cifs_tcon *tcon,
417 			const char *fromName, const char *toName,
418 			const struct nls_table *nls_codepage,
419 			int remap_special_chars);
420 extern int CIFSUnixCreateSymLink(const unsigned int xid,
421 			struct cifs_tcon *tcon,
422 			const char *fromName, const char *toName,
423 			const struct nls_table *nls_codepage, int remap);
424 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
425 			struct cifs_tcon *tcon,
426 			const unsigned char *searchName, char **syminfo,
427 			const struct nls_table *nls_codepage, int remap);
428 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
429 			       __u16 fid, char **symlinkinfo,
430 			       const struct nls_table *nls_codepage);
431 extern int CIFSSMB_set_compression(const unsigned int xid,
432 				   struct cifs_tcon *tcon, __u16 fid);
433 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
434 		     int *oplock, FILE_ALL_INFO *buf);
435 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
436 			const char *fileName, const int disposition,
437 			const int access_flags, const int omode,
438 			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
439 			const struct nls_table *nls_codepage, int remap);
440 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
441 			u32 posix_flags, __u64 mode, __u16 *netfid,
442 			FILE_UNIX_BASIC_INFO *pRetData,
443 			__u32 *pOplock, const char *name,
444 			const struct nls_table *nls_codepage, int remap);
445 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
446 			const int smb_file_id);
447 
448 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
449 			const int smb_file_id);
450 
451 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
452 			unsigned int *nbytes, char **buf,
453 			int *return_buf_type);
454 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
455 			unsigned int *nbytes, const char *buf);
456 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
457 			unsigned int *nbytes, struct kvec *iov, const int nvec);
458 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
459 				 const char *search_name, __u64 *inode_number,
460 				 const struct nls_table *nls_codepage,
461 				 int remap);
462 
463 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
464 		      const __u16 netfid, const __u8 lock_type,
465 		      const __u32 num_unlock, const __u32 num_lock,
466 		      LOCKING_ANDX_RANGE *buf);
467 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
468 			const __u16 netfid, const __u32 netpid, const __u64 len,
469 			const __u64 offset, const __u32 numUnlock,
470 			const __u32 numLock, const __u8 lockType,
471 			const bool waitFlag, const __u8 oplock_level);
472 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
473 			const __u16 smb_file_id, const __u32 netpid,
474 			const loff_t start_offset, const __u64 len,
475 			struct file_lock *, const __u16 lock_type,
476 			const bool waitFlag);
477 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
478 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
479 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
480 
481 extern struct cifs_ses *sesInfoAlloc(void);
482 extern void sesInfoFree(struct cifs_ses *);
483 extern struct cifs_tcon *tconInfoAlloc(void);
484 extern void tconInfoFree(struct cifs_tcon *);
485 
486 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
487 		   __u32 *pexpected_response_sequence_number);
488 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
489 			  __u32 *);
490 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
491 extern int cifs_verify_signature(struct smb_rqst *rqst,
492 				 struct TCP_Server_Info *server,
493 				__u32 expected_sequence_number);
494 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
495 			const struct nls_table *);
496 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
497 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
498 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
499 extern int calc_seckey(struct cifs_ses *);
500 extern int generate_smb30signingkey(struct cifs_ses *);
501 extern int generate_smb311signingkey(struct cifs_ses *);
502 
503 #ifdef CONFIG_CIFS_WEAK_PW_HASH
504 extern int calc_lanman_hash(const char *password, const char *cryptkey,
505 				bool encrypt, char *lnm_session_key);
506 #endif /* CIFS_WEAK_PW_HASH */
507 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
508 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
509 			const int notify_subdirs, const __u16 netfid,
510 			__u32 filter, struct file *file, int multishot,
511 			const struct nls_table *nls_codepage);
512 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
513 extern int CIFSSMBCopy(unsigned int xid,
514 			struct cifs_tcon *source_tcon,
515 			const char *fromName,
516 			const __u16 target_tid,
517 			const char *toName, const int flags,
518 			const struct nls_table *nls_codepage,
519 			int remap_special_chars);
520 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
521 			const unsigned char *searchName,
522 			const unsigned char *ea_name, char *EAData,
523 			size_t bufsize, struct cifs_sb_info *cifs_sb);
524 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
525 		const char *fileName, const char *ea_name,
526 		const void *ea_value, const __u16 ea_value_len,
527 		const struct nls_table *nls_codepage,
528 		struct cifs_sb_info *cifs_sb);
529 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
530 			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
531 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
532 			struct cifs_ntsd *, __u32, int);
533 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
534 		const unsigned char *searchName,
535 		char *acl_inf, const int buflen, const int acl_type,
536 		const struct nls_table *nls_codepage, int remap_special_chars);
537 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
538 		const unsigned char *fileName,
539 		const char *local_acl, const int buflen, const int acl_type,
540 		const struct nls_table *nls_codepage, int remap_special_chars);
541 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
542 			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
543 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
544 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
545 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
546 			      struct cifs_sb_info *cifs_sb,
547 			      struct cifs_fattr *fattr,
548 			      const unsigned char *path);
549 extern int mdfour(unsigned char *, unsigned char *, int);
550 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
551 			const struct nls_table *codepage);
552 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
553 			unsigned char *p24);
554 
555 extern int
556 cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
557 		       const char *devname, bool is_smb3);
558 extern void
559 cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);
560 
561 extern struct TCP_Server_Info *
562 cifs_find_tcp_session(struct smb_vol *vol);
563 
564 extern void cifs_put_smb_ses(struct cifs_ses *ses);
565 
566 extern struct cifs_ses *
567 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info);
568 
569 void cifs_readdata_release(struct kref *refcount);
570 int cifs_async_readv(struct cifs_readdata *rdata);
571 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
572 
573 int cifs_async_writev(struct cifs_writedata *wdata,
574 		      void (*release)(struct kref *kref));
575 void cifs_writev_complete(struct work_struct *work);
576 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
577 						work_func_t complete);
578 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
579 						work_func_t complete);
580 void cifs_writedata_release(struct kref *refcount);
581 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
582 			  struct cifs_sb_info *cifs_sb,
583 			  const unsigned char *path, char *pbuf,
584 			  unsigned int *pbytes_read);
585 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
586 			   struct cifs_sb_info *cifs_sb,
587 			   const unsigned char *path, char *pbuf,
588 			   unsigned int *pbytes_written);
589 int __cifs_calc_signature(struct smb_rqst *rqst,
590 			struct TCP_Server_Info *server, char *signature,
591 			struct shash_desc *shash);
592 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
593 					enum securityEnum);
594 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
595 void cifs_aio_ctx_release(struct kref *refcount);
596 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
597 void smb2_cached_lease_break(struct work_struct *work);
598 
599 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
600 		    struct sdesc **sdesc);
601 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
602 
603 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
604 				unsigned int *len, unsigned int *offset);
605 struct cifs_chan *
606 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
607 int cifs_try_adding_channels(struct cifs_ses *ses);
608 int cifs_ses_add_channel(struct cifs_ses *ses,
609 				struct cifs_server_iface *iface);
610 bool is_server_using_iface(struct TCP_Server_Info *server,
611 			   struct cifs_server_iface *iface);
612 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
613 
614 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
615 int copy_path_name(char *dst, const char *src);
616 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
617 			       int resp_buftype,
618 			       struct cifs_search_info *srch_inf);
619 
620 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
621 void cifs_put_tcp_super(struct super_block *sb);
622 int update_super_prepath(struct cifs_tcon *tcon, char *prefix);
623 
624 #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)625 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
626 			       const char *old_path,
627 			       const struct nls_table *nls_codepage,
628 			       struct dfs_info3_param *referral, int remap)
629 {
630 	return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
631 			      referral, NULL);
632 }
633 
634 int match_target_ip(struct TCP_Server_Info *server,
635 		    const char *share, size_t share_len,
636 		    bool *result);
637 #endif
638 
cifs_create_options(struct cifs_sb_info * cifs_sb,int options)639 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
640 {
641 	if (cifs_sb && (backup_cred(cifs_sb)))
642 		return options | CREATE_OPEN_BACKUP_INTENT;
643 	else
644 		return options;
645 }
646 
647 #endif			/* _CIFSPROTO_H */
648