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Linux kernel mirror (for testing)
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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
17struct statfs;
18struct smb_rqst;
19struct smb3_fs_context;
20
21/*
22 *****************************************************************
23 * All Prototypes
24 *****************************************************************
25 */
26
27extern struct smb_hdr *cifs_buf_get(void);
28extern void cifs_buf_release(void *);
29extern struct smb_hdr *cifs_small_buf_get(void);
30extern void cifs_small_buf_release(void *);
31extern void free_rsp_buf(int, void *);
32extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
33 unsigned int /* length */);
34extern unsigned int _get_xid(void);
35extern void _free_xid(unsigned int);
36#define get_xid() \
37({ \
38 unsigned int __xid = _get_xid(); \
39 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
40 __func__, __xid, \
41 from_kuid(&init_user_ns, current_fsuid())); \
42 trace_smb3_enter(__xid, __func__); \
43 __xid; \
44})
45
46#define free_xid(curr_xid) \
47do { \
48 _free_xid(curr_xid); \
49 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
50 __func__, curr_xid, (int)rc); \
51 if (rc) \
52 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
53 else \
54 trace_smb3_exit_done(curr_xid, __func__); \
55} while (0)
56extern int init_cifs_idmap(void);
57extern void exit_cifs_idmap(void);
58extern int init_cifs_spnego(void);
59extern void exit_cifs_spnego(void);
60extern const char *build_path_from_dentry(struct dentry *, void *);
61char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
62 const char *tree, int tree_len,
63 bool prefix);
64extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
65 void *page, bool prefix);
66static inline void *alloc_dentry_path(void)
67{
68 return __getname();
69}
70
71static inline void free_dentry_path(void *page)
72{
73 if (page)
74 __putname(page);
75}
76
77extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
78 struct cifs_sb_info *cifs_sb,
79 struct cifs_tcon *tcon,
80 int add_treename);
81extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
82char *cifs_build_devname(char *nodename, const char *prepath);
83extern void delete_mid(struct mid_q_entry *mid);
84void __release_mid(struct kref *refcount);
85extern void cifs_wake_up_task(struct mid_q_entry *mid);
86extern int cifs_handle_standard(struct TCP_Server_Info *server,
87 struct mid_q_entry *mid);
88extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
89 char dirsep);
90extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
91extern int smb3_parse_opt(const char *options, const char *key, char **val);
92extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
93extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
94extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
95extern int cifs_call_async(struct TCP_Server_Info *server,
96 struct smb_rqst *rqst,
97 mid_receive_t *receive, mid_callback_t *callback,
98 mid_handle_t *handle, void *cbdata, const int flags,
99 const struct cifs_credits *exist_credits);
100extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
101extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
102 struct TCP_Server_Info *server,
103 struct smb_rqst *rqst, int *resp_buf_type,
104 const int flags, struct kvec *resp_iov);
105extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
106 struct TCP_Server_Info *server,
107 const int flags, const int num_rqst,
108 struct smb_rqst *rqst, int *resp_buf_type,
109 struct kvec *resp_iov);
110extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
111 struct smb_hdr * /* input */ ,
112 struct smb_hdr * /* out */ ,
113 int * /* bytes returned */ , const int);
114extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
115 char *in_buf, int flags);
116extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
117 struct TCP_Server_Info *,
118 struct smb_rqst *);
119extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
120 struct smb_rqst *);
121extern int cifs_check_receive(struct mid_q_entry *mid,
122 struct TCP_Server_Info *server, bool log_error);
123extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
124 size_t size, size_t *num,
125 struct cifs_credits *credits);
126extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
127 struct kvec *, int /* nvec to send */,
128 int * /* type of buf returned */, const int flags,
129 struct kvec * /* resp vec */);
130extern int SendReceiveBlockingLock(const unsigned int xid,
131 struct cifs_tcon *ptcon,
132 struct smb_hdr *in_buf,
133 struct smb_hdr *out_buf,
134 int *bytes_returned);
135
136void
137cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
138 bool all_channels);
139void
140cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
141 bool mark_smb_session);
142extern int cifs_reconnect(struct TCP_Server_Info *server,
143 bool mark_smb_session);
144extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
145extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
146extern bool backup_cred(struct cifs_sb_info *);
147extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
148 bool from_readdir);
149extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
150 unsigned int bytes_written);
151void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result,
152 bool was_async);
153extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
154extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
155 int flags,
156 struct cifsFileInfo **ret_file);
157extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
158 int flags,
159 struct cifsFileInfo **ret_file);
160extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
161extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
162 struct cifsFileInfo **ret_file);
163extern unsigned int smbCalcSize(void *buf);
164extern int decode_negTokenInit(unsigned char *security_blob, int length,
165 struct TCP_Server_Info *server);
166extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
167extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
168extern int map_smb_to_linux_error(char *buf, bool logErr);
169extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
170extern void header_assemble(struct smb_hdr *, char /* command */ ,
171 const struct cifs_tcon *, int /* length of
172 fixed section (word count) in two byte units */);
173extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
174 struct cifs_ses *ses,
175 void **request_buf);
176extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
177 enum securityEnum requested);
178extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
179 struct TCP_Server_Info *server,
180 const struct nls_table *nls_cp);
181extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
182extern u64 cifs_UnixTimeToNT(struct timespec64);
183extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
184 int offset);
185extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
186extern int cifs_get_writer(struct cifsInodeInfo *cinode);
187extern void cifs_put_writer(struct cifsInodeInfo *cinode);
188extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
189extern int cifs_unlock_range(struct cifsFileInfo *cfile,
190 struct file_lock *flock, const unsigned int xid);
191extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
192
193extern void cifs_down_write(struct rw_semaphore *sem);
194struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
195 struct tcon_link *tlink, __u32 oplock,
196 const char *symlink_target);
197extern int cifs_posix_open(const char *full_path, struct inode **inode,
198 struct super_block *sb, int mode,
199 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
200 unsigned int xid);
201void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
202extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
203 FILE_UNIX_BASIC_INFO *info,
204 struct cifs_sb_info *cifs_sb);
205extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
206 struct cifs_sb_info *);
207extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
208 bool from_readdir);
209extern struct inode *cifs_iget(struct super_block *sb,
210 struct cifs_fattr *fattr);
211
212int cifs_get_inode_info(struct inode **inode, const char *full_path,
213 struct cifs_open_info_data *data, struct super_block *sb, int xid,
214 const struct cifs_fid *fid);
215extern int smb311_posix_get_inode_info(struct inode **inode,
216 const char *full_path,
217 struct cifs_open_info_data *data,
218 struct super_block *sb,
219 const unsigned int xid);
220extern int cifs_get_inode_info_unix(struct inode **pinode,
221 const unsigned char *search_path,
222 struct super_block *sb, unsigned int xid);
223extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
224 unsigned int xid, const char *full_path, __u32 dosattr);
225extern int cifs_rename_pending_delete(const char *full_path,
226 struct dentry *dentry,
227 const unsigned int xid);
228extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
229 struct cifs_fattr *fattr, uint sidtype);
230extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
231 struct cifs_fattr *fattr, struct inode *inode,
232 bool get_mode_from_special_sid,
233 const char *path, const struct cifs_fid *pfid);
234extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
235 kuid_t uid, kgid_t gid);
236extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
237 const char *path, u32 *plen, u32 info);
238extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
239 const struct cifs_fid *pfid, u32 *plen, u32 info);
240extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
241 struct dentry *dentry, int type);
242extern int cifs_set_acl(struct mnt_idmap *idmap,
243 struct dentry *dentry, struct posix_acl *acl, int type);
244extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
245 const char *path, int flag);
246extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
247extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
248 bool posix,
249 __u64 nmode);
250extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
251
252extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
253extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
254 unsigned int to_read);
255extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
256 size_t to_read);
257int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
258 struct iov_iter *iter,
259 unsigned int to_read);
260extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
261void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
262int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
263int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
264int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
265extern int cifs_match_super(struct super_block *, void *);
266extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
267extern void cifs_umount(struct cifs_sb_info *);
268extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
269extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
270
271extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
272 __u64 length, __u8 type, __u16 flags,
273 struct cifsLockInfo **conf_lock,
274 int rw_check);
275extern void cifs_add_pending_open(struct cifs_fid *fid,
276 struct tcon_link *tlink,
277 struct cifs_pending_open *open);
278extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
279 struct tcon_link *tlink,
280 struct cifs_pending_open *open);
281extern void cifs_del_pending_open(struct cifs_pending_open *open);
282
283extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
284 struct cifs_deferred_close **dclose);
285
286extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
287 struct cifs_deferred_close *dclose);
288
289extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
290
291extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
292
293extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
294
295extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
296 const char *path);
297
298extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
299 const char *path);
300
301extern struct TCP_Server_Info *
302cifs_get_tcp_session(struct smb3_fs_context *ctx,
303 struct TCP_Server_Info *primary_server);
304extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
305 int from_reconnect);
306extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
307
308extern void cifs_release_automount_timer(void);
309
310void cifs_proc_init(void);
311void cifs_proc_clean(void);
312
313extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
314extern void cifs_free_llist(struct list_head *llist);
315extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
316
317int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon);
318
319extern int cifs_negotiate_protocol(const unsigned int xid,
320 struct cifs_ses *ses,
321 struct TCP_Server_Info *server);
322extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
323 struct TCP_Server_Info *server,
324 struct nls_table *nls_info);
325extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
326extern int CIFSSMBNegotiate(const unsigned int xid,
327 struct cifs_ses *ses,
328 struct TCP_Server_Info *server);
329
330extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
331 const char *tree, struct cifs_tcon *tcon,
332 const struct nls_table *);
333
334extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
335 const char *searchName, struct cifs_sb_info *cifs_sb,
336 __u16 *searchHandle, __u16 search_flags,
337 struct cifs_search_info *psrch_inf,
338 bool msearch);
339
340extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
341 __u16 searchHandle, __u16 search_flags,
342 struct cifs_search_info *psrch_inf);
343
344extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
345 const __u16 search_handle);
346
347extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
348 u16 netfid, FILE_ALL_INFO *pFindData);
349extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
350 const char *search_Name, FILE_ALL_INFO *data,
351 int legacy /* whether to use old info level */,
352 const struct nls_table *nls_codepage, int remap);
353extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
354 const char *search_name, FILE_ALL_INFO *data,
355 const struct nls_table *nls_codepage, int remap);
356
357extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
358 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
359extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
360 struct cifs_tcon *tcon,
361 const unsigned char *searchName,
362 FILE_UNIX_BASIC_INFO *pFindData,
363 const struct nls_table *nls_codepage, int remap);
364
365extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
366 const char *search_name,
367 struct dfs_info3_param **target_nodes,
368 unsigned int *num_of_nodes,
369 const struct nls_table *nls_codepage, int remap);
370
371extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
372 unsigned int *num_of_nodes,
373 struct dfs_info3_param **target_nodes,
374 const struct nls_table *nls_codepage, int remap,
375 const char *searchName, bool is_unicode);
376extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
377 struct cifs_sb_info *cifs_sb,
378 struct smb3_fs_context *ctx);
379extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
380 struct kstatfs *FSData);
381extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
382 struct kstatfs *FSData);
383extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
384 __u64 cap);
385
386extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
387 struct cifs_tcon *tcon);
388extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
389extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
390extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
391 struct kstatfs *FSData);
392
393extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
394 const char *fileName, const FILE_BASIC_INFO *data,
395 const struct nls_table *nls_codepage,
396 struct cifs_sb_info *cifs_sb);
397extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
398 const FILE_BASIC_INFO *data, __u16 fid,
399 __u32 pid_of_opener);
400extern int CIFSSMBSetFileDisposition(const unsigned int xid,
401 struct cifs_tcon *tcon,
402 bool delete_file, __u16 fid,
403 __u32 pid_of_opener);
404extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
405 const char *file_name, __u64 size,
406 struct cifs_sb_info *cifs_sb, bool set_allocation,
407 struct dentry *dentry);
408extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
409 struct cifsFileInfo *cfile, __u64 size,
410 bool set_allocation);
411
412struct cifs_unix_set_info_args {
413 __u64 ctime;
414 __u64 atime;
415 __u64 mtime;
416 __u64 mode;
417 kuid_t uid;
418 kgid_t gid;
419 dev_t device;
420};
421
422extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
423 struct cifs_tcon *tcon,
424 const struct cifs_unix_set_info_args *args,
425 u16 fid, u32 pid_of_opener);
426
427extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
428 struct cifs_tcon *tcon, const char *file_name,
429 const struct cifs_unix_set_info_args *args,
430 const struct nls_table *nls_codepage,
431 int remap);
432
433extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
434 umode_t mode, struct cifs_tcon *tcon,
435 const char *name, struct cifs_sb_info *cifs_sb);
436extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
437 const char *name, struct cifs_sb_info *cifs_sb);
438extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
439 const char *name, __u16 type,
440 const struct nls_table *nls_codepage,
441 int remap_special_chars);
442extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
443 const char *name, struct cifs_sb_info *cifs_sb,
444 struct dentry *dentry);
445int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
446 struct dentry *source_dentry,
447 const char *from_name, const char *to_name,
448 struct cifs_sb_info *cifs_sb);
449extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
450 int netfid, const char *target_name,
451 const struct nls_table *nls_codepage,
452 int remap_special_chars);
453int CIFSCreateHardLink(const unsigned int xid,
454 struct cifs_tcon *tcon,
455 struct dentry *source_dentry,
456 const char *from_name, const char *to_name,
457 struct cifs_sb_info *cifs_sb);
458extern int CIFSUnixCreateHardLink(const unsigned int xid,
459 struct cifs_tcon *tcon,
460 const char *fromName, const char *toName,
461 const struct nls_table *nls_codepage,
462 int remap_special_chars);
463extern int CIFSUnixCreateSymLink(const unsigned int xid,
464 struct cifs_tcon *tcon,
465 const char *fromName, const char *toName,
466 const struct nls_table *nls_codepage, int remap);
467extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
468 struct cifs_tcon *tcon,
469 const unsigned char *searchName, char **syminfo,
470 const struct nls_table *nls_codepage, int remap);
471extern int cifs_query_reparse_point(const unsigned int xid,
472 struct cifs_tcon *tcon,
473 struct cifs_sb_info *cifs_sb,
474 const char *full_path,
475 u32 *tag, struct kvec *rsp,
476 int *rsp_buftype);
477extern int CIFSSMB_set_compression(const unsigned int xid,
478 struct cifs_tcon *tcon, __u16 fid);
479extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
480 int *oplock, FILE_ALL_INFO *buf);
481extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
482 const char *fileName, const int disposition,
483 const int access_flags, const int omode,
484 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
485 const struct nls_table *nls_codepage, int remap);
486extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
487 u32 posix_flags, __u64 mode, __u16 *netfid,
488 FILE_UNIX_BASIC_INFO *pRetData,
489 __u32 *pOplock, const char *name,
490 const struct nls_table *nls_codepage, int remap);
491extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
492 const int smb_file_id);
493
494extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
495 const int smb_file_id);
496
497extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
498 unsigned int *nbytes, char **buf,
499 int *return_buf_type);
500extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
501 unsigned int *nbytes, const char *buf);
502extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
503 unsigned int *nbytes, struct kvec *iov, const int nvec);
504extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
505 const char *search_name, __u64 *inode_number,
506 const struct nls_table *nls_codepage,
507 int remap);
508
509extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
510 const __u16 netfid, const __u8 lock_type,
511 const __u32 num_unlock, const __u32 num_lock,
512 LOCKING_ANDX_RANGE *buf);
513extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
514 const __u16 netfid, const __u32 netpid, const __u64 len,
515 const __u64 offset, const __u32 numUnlock,
516 const __u32 numLock, const __u8 lockType,
517 const bool waitFlag, const __u8 oplock_level);
518extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
519 const __u16 smb_file_id, const __u32 netpid,
520 const loff_t start_offset, const __u64 len,
521 struct file_lock *, const __u16 lock_type,
522 const bool waitFlag);
523extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
524extern int CIFSSMBEcho(struct TCP_Server_Info *server);
525extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
526
527extern struct cifs_ses *sesInfoAlloc(void);
528extern void sesInfoFree(struct cifs_ses *);
529extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
530 enum smb3_tcon_ref_trace trace);
531extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
532
533extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
534 __u32 *pexpected_response_sequence_number);
535extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
536 __u32 *);
537extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
538extern int cifs_verify_signature(struct smb_rqst *rqst,
539 struct TCP_Server_Info *server,
540 __u32 expected_sequence_number);
541extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
542extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
543extern int calc_seckey(struct cifs_ses *);
544extern int generate_smb30signingkey(struct cifs_ses *ses,
545 struct TCP_Server_Info *server);
546extern int generate_smb311signingkey(struct cifs_ses *ses,
547 struct TCP_Server_Info *server);
548
549#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
550extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
551 const unsigned char *searchName,
552 const unsigned char *ea_name, char *EAData,
553 size_t bufsize, struct cifs_sb_info *cifs_sb);
554extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
555 const char *fileName, const char *ea_name,
556 const void *ea_value, const __u16 ea_value_len,
557 const struct nls_table *nls_codepage,
558 struct cifs_sb_info *cifs_sb);
559extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
560 __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info);
561extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
562 struct smb_ntsd *pntsd, __u32 len, int aclflag);
563extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
564 const unsigned char *searchName,
565 struct posix_acl **acl, const int acl_type,
566 const struct nls_table *nls_codepage, int remap);
567extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
568 const unsigned char *fileName,
569 const struct posix_acl *acl, const int acl_type,
570 const struct nls_table *nls_codepage, int remap);
571extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
572 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
573#endif /* CIFS_ALLOW_INSECURE_LEGACY */
574extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
575extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
576extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
577 struct cifs_sb_info *cifs_sb,
578 struct cifs_fattr *fattr,
579 const unsigned char *path);
580extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
581 const struct nls_table *codepage);
582
583extern struct TCP_Server_Info *
584cifs_find_tcp_session(struct smb3_fs_context *ctx);
585
586void __cifs_put_smb_ses(struct cifs_ses *ses);
587
588extern struct cifs_ses *
589cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
590
591int cifs_async_readv(struct cifs_io_subrequest *rdata);
592int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
593
594void cifs_async_writev(struct cifs_io_subrequest *wdata);
595void cifs_writev_complete(struct work_struct *work);
596int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
597 struct cifs_sb_info *cifs_sb,
598 const unsigned char *path, char *pbuf,
599 unsigned int *pbytes_read);
600int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
601 struct cifs_sb_info *cifs_sb,
602 const unsigned char *path, char *pbuf,
603 unsigned int *pbytes_written);
604int __cifs_calc_signature(struct smb_rqst *rqst,
605 struct TCP_Server_Info *server, char *signature,
606 struct shash_desc *shash);
607enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
608 enum securityEnum);
609
610int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
611void cifs_free_hash(struct shash_desc **sdesc);
612
613int cifs_try_adding_channels(struct cifs_ses *ses);
614bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
615void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
616
617int
618cifs_ses_get_chan_index(struct cifs_ses *ses,
619 struct TCP_Server_Info *server);
620void
621cifs_chan_set_in_reconnect(struct cifs_ses *ses,
622 struct TCP_Server_Info *server);
623void
624cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
625 struct TCP_Server_Info *server);
626void
627cifs_chan_set_need_reconnect(struct cifs_ses *ses,
628 struct TCP_Server_Info *server);
629void
630cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
631 struct TCP_Server_Info *server);
632bool
633cifs_chan_needs_reconnect(struct cifs_ses *ses,
634 struct TCP_Server_Info *server);
635bool
636cifs_chan_is_iface_active(struct cifs_ses *ses,
637 struct TCP_Server_Info *server);
638void
639cifs_disable_secondary_channels(struct cifs_ses *ses);
640void
641cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
642int
643SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
644
645void extract_unc_hostname(const char *unc, const char **h, size_t *len);
646int copy_path_name(char *dst, const char *src);
647int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
648 int resp_buftype,
649 struct cifs_search_info *srch_inf);
650
651struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
652void cifs_put_tcp_super(struct super_block *sb);
653int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
654char *extract_hostname(const char *unc);
655char *extract_sharename(const char *unc);
656int parse_reparse_point(struct reparse_data_buffer *buf,
657 u32 plen, struct cifs_sb_info *cifs_sb,
658 const char *full_path,
659 struct cifs_open_info_data *data);
660int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
661 struct dentry *dentry, struct cifs_tcon *tcon,
662 const char *full_path, umode_t mode, dev_t dev,
663 const char *symname);
664int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
665 struct dentry *dentry, struct cifs_tcon *tcon,
666 const char *full_path, umode_t mode, dev_t dev);
667umode_t wire_mode_to_posix(u32 wire, bool is_dir);
668
669#ifdef CONFIG_CIFS_DFS_UPCALL
670static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
671 const char *old_path,
672 const struct nls_table *nls_codepage,
673 struct dfs_info3_param *referral, int remap)
674{
675 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
676 referral, NULL);
677}
678
679int match_target_ip(struct TCP_Server_Info *server,
680 const char *host, size_t hostlen,
681 bool *result);
682int cifs_inval_name_dfs_link_error(const unsigned int xid,
683 struct cifs_tcon *tcon,
684 struct cifs_sb_info *cifs_sb,
685 const char *full_path,
686 bool *islink);
687#else
688static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
689 struct cifs_tcon *tcon,
690 struct cifs_sb_info *cifs_sb,
691 const char *full_path,
692 bool *islink)
693{
694 *islink = false;
695 return 0;
696}
697#endif
698
699static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
700{
701 if (cifs_sb && (backup_cred(cifs_sb)))
702 return options | CREATE_OPEN_BACKUP_INTENT;
703 else
704 return options;
705}
706
707int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
708
709static inline void cifs_put_smb_ses(struct cifs_ses *ses)
710{
711 __cifs_put_smb_ses(ses);
712}
713
714/* Get an active reference of @ses and its children.
715 *
716 * NOTE: make sure to call this function when incrementing reference count of
717 * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
718 * will also get its reference count incremented.
719 *
720 * cifs_put_smb_ses() will put all references, so call it when you're done.
721 */
722static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
723{
724 lockdep_assert_held(&cifs_tcp_ses_lock);
725 ses->ses_count++;
726}
727
728static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
729{
730 if (strlen(s1) != strlen(s2))
731 return false;
732 for (; *s1; s1++, s2++) {
733 if (*s1 == '/' || *s1 == '\\') {
734 if (*s2 != '/' && *s2 != '\\')
735 return false;
736 } else if (tolower(*s1) != tolower(*s2))
737 return false;
738 }
739 return true;
740}
741
742static inline void release_mid(struct mid_q_entry *mid)
743{
744 kref_put(&mid->refcount, __release_mid);
745}
746
747static inline void cifs_free_open_info(struct cifs_open_info_data *data)
748{
749 kfree(data->symlink_target);
750 free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
751 memset(data, 0, sizeof(*data));
752}
753
754#endif /* _CIFSPROTO_H */