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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 "trace.h"
12#ifdef CONFIG_CIFS_DFS_UPCALL
13#include "dfs_cache.h"
14#endif
15
16struct statfs;
17struct smb_rqst;
18struct smb3_fs_context;
19
20/*
21 *****************************************************************
22 * All Prototypes
23 *****************************************************************
24 */
25
26extern struct smb_hdr *cifs_buf_get(void);
27extern void cifs_buf_release(void *);
28extern struct smb_hdr *cifs_small_buf_get(void);
29extern void cifs_small_buf_release(void *);
30extern void free_rsp_buf(int, void *);
31extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
32 unsigned int /* length */);
33extern unsigned int _get_xid(void);
34extern void _free_xid(unsigned int);
35#define get_xid() \
36({ \
37 unsigned int __xid = _get_xid(); \
38 cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \
39 __func__, __xid, \
40 from_kuid(&init_user_ns, current_fsuid())); \
41 trace_smb3_enter(__xid, __func__); \
42 __xid; \
43})
44
45#define free_xid(curr_xid) \
46do { \
47 _free_xid(curr_xid); \
48 cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \
49 __func__, curr_xid, (int)rc); \
50 if (rc) \
51 trace_smb3_exit_err(curr_xid, __func__, (int)rc); \
52 else \
53 trace_smb3_exit_done(curr_xid, __func__); \
54} while (0)
55extern int init_cifs_idmap(void);
56extern void exit_cifs_idmap(void);
57extern int init_cifs_spnego(void);
58extern void exit_cifs_spnego(void);
59extern const char *build_path_from_dentry(struct dentry *, void *);
60char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
61 const char *tree, int tree_len,
62 bool prefix);
63extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
64 void *page, bool prefix);
65static inline void *alloc_dentry_path(void)
66{
67 return __getname();
68}
69
70static inline void free_dentry_path(void *page)
71{
72 if (page)
73 __putname(page);
74}
75
76extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
77 struct cifs_sb_info *cifs_sb,
78 struct cifs_tcon *tcon,
79 int add_treename);
80extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
81char *cifs_build_devname(char *nodename, const char *prepath);
82extern void delete_mid(struct mid_q_entry *mid);
83extern void release_mid(struct mid_q_entry *mid);
84extern void cifs_wake_up_task(struct mid_q_entry *mid);
85extern int cifs_handle_standard(struct TCP_Server_Info *server,
86 struct mid_q_entry *mid);
87extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
88extern int smb3_parse_opt(const char *options, const char *key, char **val);
89extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
90extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
91extern int cifs_call_async(struct TCP_Server_Info *server,
92 struct smb_rqst *rqst,
93 mid_receive_t *receive, mid_callback_t *callback,
94 mid_handle_t *handle, void *cbdata, const int flags,
95 const struct cifs_credits *exist_credits);
96extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
97extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
98 struct TCP_Server_Info *server,
99 struct smb_rqst *rqst, int *resp_buf_type,
100 const int flags, struct kvec *resp_iov);
101extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
102 struct TCP_Server_Info *server,
103 const int flags, const int num_rqst,
104 struct smb_rqst *rqst, int *resp_buf_type,
105 struct kvec *resp_iov);
106extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
107 struct smb_hdr * /* input */ ,
108 struct smb_hdr * /* out */ ,
109 int * /* bytes returned */ , const int);
110extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
111 char *in_buf, int flags);
112extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
113 struct TCP_Server_Info *,
114 struct smb_rqst *);
115extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
116 struct smb_rqst *);
117extern int cifs_check_receive(struct mid_q_entry *mid,
118 struct TCP_Server_Info *server, bool log_error);
119extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
120 unsigned int size, unsigned int *num,
121 struct cifs_credits *credits);
122extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
123 struct kvec *, int /* nvec to send */,
124 int * /* type of buf returned */, const int flags,
125 struct kvec * /* resp vec */);
126extern int SendReceiveBlockingLock(const unsigned int xid,
127 struct cifs_tcon *ptcon,
128 struct smb_hdr *in_buf,
129 struct smb_hdr *out_buf,
130 int *bytes_returned);
131void
132cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
133 bool all_channels);
134void
135cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
136 bool mark_smb_session);
137extern int cifs_reconnect(struct TCP_Server_Info *server,
138 bool mark_smb_session);
139extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
140extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
141extern bool backup_cred(struct cifs_sb_info *);
142extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
143extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
144 unsigned int bytes_written);
145extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
146extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
147 int flags,
148 struct cifsFileInfo **ret_file);
149extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
150 int flags,
151 struct cifsFileInfo **ret_file);
152extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
153extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
154 struct cifsFileInfo **ret_file);
155extern unsigned int smbCalcSize(void *buf);
156extern int decode_negTokenInit(unsigned char *security_blob, int length,
157 struct TCP_Server_Info *server);
158extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
159extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
160extern int map_smb_to_linux_error(char *buf, bool logErr);
161extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
162extern void header_assemble(struct smb_hdr *, char /* command */ ,
163 const struct cifs_tcon *, int /* length of
164 fixed section (word count) in two byte units */);
165extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
166 struct cifs_ses *ses,
167 void **request_buf);
168extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
169 enum securityEnum requested);
170extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
171 struct TCP_Server_Info *server,
172 const struct nls_table *nls_cp);
173extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
174extern u64 cifs_UnixTimeToNT(struct timespec64);
175extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
176 int offset);
177extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
178extern int cifs_get_writer(struct cifsInodeInfo *cinode);
179extern void cifs_put_writer(struct cifsInodeInfo *cinode);
180extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
181extern int cifs_unlock_range(struct cifsFileInfo *cfile,
182 struct file_lock *flock, const unsigned int xid);
183extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
184
185extern void cifs_down_write(struct rw_semaphore *sem);
186struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
187 struct tcon_link *tlink, __u32 oplock,
188 const char *symlink_target);
189extern int cifs_posix_open(const char *full_path, struct inode **inode,
190 struct super_block *sb, int mode,
191 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
192 unsigned int xid);
193void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
194extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
195 FILE_UNIX_BASIC_INFO *info,
196 struct cifs_sb_info *cifs_sb);
197extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
198 struct cifs_sb_info *);
199extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
200extern struct inode *cifs_iget(struct super_block *sb,
201 struct cifs_fattr *fattr);
202
203int cifs_get_inode_info(struct inode **inode, const char *full_path,
204 struct cifs_open_info_data *data, struct super_block *sb, int xid,
205 const struct cifs_fid *fid);
206extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
207 struct super_block *sb, unsigned int xid);
208extern int cifs_get_inode_info_unix(struct inode **pinode,
209 const unsigned char *search_path,
210 struct super_block *sb, unsigned int xid);
211extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
212 unsigned int xid, const char *full_path, __u32 dosattr);
213extern int cifs_rename_pending_delete(const char *full_path,
214 struct dentry *dentry,
215 const unsigned int xid);
216extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
217 struct cifs_fattr *fattr, uint sidtype);
218extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
219 struct cifs_fattr *fattr, struct inode *inode,
220 bool get_mode_from_special_sid,
221 const char *path, const struct cifs_fid *pfid);
222extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
223 kuid_t uid, kgid_t gid);
224extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
225 const char *, u32 *, u32);
226extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
227 const struct cifs_fid *, u32 *, u32);
228extern struct posix_acl *cifs_get_acl(struct user_namespace *mnt_userns,
229 struct dentry *dentry, int type);
230extern int cifs_set_acl(struct user_namespace *mnt_userns,
231 struct dentry *dentry, struct posix_acl *acl, int type);
232extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
233 const char *, int);
234extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
235extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
236extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
237
238extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
239extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
240 unsigned int to_read);
241extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
242 size_t to_read);
243extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
244 struct page *page,
245 unsigned int page_offset,
246 unsigned int to_read);
247extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
248void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
249int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
250int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
251int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
252extern int cifs_match_super(struct super_block *, void *);
253extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
254extern void cifs_umount(struct cifs_sb_info *);
255extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
256extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
257
258extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
259 __u64 length, __u8 type, __u16 flags,
260 struct cifsLockInfo **conf_lock,
261 int rw_check);
262extern void cifs_add_pending_open(struct cifs_fid *fid,
263 struct tcon_link *tlink,
264 struct cifs_pending_open *open);
265extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
266 struct tcon_link *tlink,
267 struct cifs_pending_open *open);
268extern void cifs_del_pending_open(struct cifs_pending_open *open);
269
270extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
271 struct cifs_deferred_close **dclose);
272
273extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
274 struct cifs_deferred_close *dclose);
275
276extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
277
278extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
279
280extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
281
282extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
283 const char *path);
284extern struct TCP_Server_Info *
285cifs_get_tcp_session(struct smb3_fs_context *ctx,
286 struct TCP_Server_Info *primary_server);
287extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
288 int from_reconnect);
289extern void cifs_put_tcon(struct cifs_tcon *tcon);
290
291#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
292extern void cifs_dfs_release_automount_timer(void);
293#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
294#define cifs_dfs_release_automount_timer() do { } while (0)
295#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
296
297void cifs_proc_init(void);
298void cifs_proc_clean(void);
299
300extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
301extern void cifs_free_llist(struct list_head *llist);
302extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
303
304extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
305 const struct nls_table *nlsc);
306
307extern int cifs_negotiate_protocol(const unsigned int xid,
308 struct cifs_ses *ses,
309 struct TCP_Server_Info *server);
310extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
311 struct TCP_Server_Info *server,
312 struct nls_table *nls_info);
313extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
314extern int CIFSSMBNegotiate(const unsigned int xid,
315 struct cifs_ses *ses,
316 struct TCP_Server_Info *server);
317
318extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
319 const char *tree, struct cifs_tcon *tcon,
320 const struct nls_table *);
321
322extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
323 const char *searchName, struct cifs_sb_info *cifs_sb,
324 __u16 *searchHandle, __u16 search_flags,
325 struct cifs_search_info *psrch_inf,
326 bool msearch);
327
328extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
329 __u16 searchHandle, __u16 search_flags,
330 struct cifs_search_info *psrch_inf);
331
332extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
333 const __u16 search_handle);
334
335extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
336 u16 netfid, FILE_ALL_INFO *pFindData);
337extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
338 const char *search_Name, FILE_ALL_INFO *data,
339 int legacy /* whether to use old info level */,
340 const struct nls_table *nls_codepage, int remap);
341extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
342 const char *search_name, FILE_ALL_INFO *data,
343 const struct nls_table *nls_codepage, int remap);
344
345extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
346 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
347extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
348 struct cifs_tcon *tcon,
349 const unsigned char *searchName,
350 FILE_UNIX_BASIC_INFO *pFindData,
351 const struct nls_table *nls_codepage, int remap);
352
353extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
354 const char *search_name,
355 struct dfs_info3_param **target_nodes,
356 unsigned int *num_of_nodes,
357 const struct nls_table *nls_codepage, int remap);
358
359extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
360 unsigned int *num_of_nodes,
361 struct dfs_info3_param **target_nodes,
362 const struct nls_table *nls_codepage, int remap,
363 const char *searchName, bool is_unicode);
364extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
365 struct cifs_sb_info *cifs_sb,
366 struct smb3_fs_context *ctx);
367extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
368 struct kstatfs *FSData);
369extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
370 struct kstatfs *FSData);
371extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
372 __u64 cap);
373
374extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
375 struct cifs_tcon *tcon);
376extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
377extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
378extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
379 struct kstatfs *FSData);
380
381extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
382 const char *fileName, const FILE_BASIC_INFO *data,
383 const struct nls_table *nls_codepage,
384 struct cifs_sb_info *cifs_sb);
385extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
386 const FILE_BASIC_INFO *data, __u16 fid,
387 __u32 pid_of_opener);
388extern int CIFSSMBSetFileDisposition(const unsigned int xid,
389 struct cifs_tcon *tcon,
390 bool delete_file, __u16 fid,
391 __u32 pid_of_opener);
392extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
393 const char *file_name, __u64 size,
394 struct cifs_sb_info *cifs_sb, bool set_allocation);
395extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
396 struct cifsFileInfo *cfile, __u64 size,
397 bool set_allocation);
398
399struct cifs_unix_set_info_args {
400 __u64 ctime;
401 __u64 atime;
402 __u64 mtime;
403 __u64 mode;
404 kuid_t uid;
405 kgid_t gid;
406 dev_t device;
407};
408
409extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
410 struct cifs_tcon *tcon,
411 const struct cifs_unix_set_info_args *args,
412 u16 fid, u32 pid_of_opener);
413
414extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
415 struct cifs_tcon *tcon, const char *file_name,
416 const struct cifs_unix_set_info_args *args,
417 const struct nls_table *nls_codepage,
418 int remap);
419
420extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
421 umode_t mode, struct cifs_tcon *tcon,
422 const char *name, struct cifs_sb_info *cifs_sb);
423extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
424 const char *name, struct cifs_sb_info *cifs_sb);
425extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
426 const char *name, __u16 type,
427 const struct nls_table *nls_codepage,
428 int remap_special_chars);
429extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
430 const char *name, struct cifs_sb_info *cifs_sb);
431extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
432 const char *from_name, const char *to_name,
433 struct cifs_sb_info *cifs_sb);
434extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
435 int netfid, const char *target_name,
436 const struct nls_table *nls_codepage,
437 int remap_special_chars);
438extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
439 const char *from_name, const char *to_name,
440 struct cifs_sb_info *cifs_sb);
441extern int CIFSUnixCreateHardLink(const unsigned int xid,
442 struct cifs_tcon *tcon,
443 const char *fromName, const char *toName,
444 const struct nls_table *nls_codepage,
445 int remap_special_chars);
446extern int CIFSUnixCreateSymLink(const unsigned int xid,
447 struct cifs_tcon *tcon,
448 const char *fromName, const char *toName,
449 const struct nls_table *nls_codepage, int remap);
450extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
451 struct cifs_tcon *tcon,
452 const unsigned char *searchName, char **syminfo,
453 const struct nls_table *nls_codepage, int remap);
454extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
455 __u16 fid, char **symlinkinfo,
456 const struct nls_table *nls_codepage);
457extern int CIFSSMB_set_compression(const unsigned int xid,
458 struct cifs_tcon *tcon, __u16 fid);
459extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
460 int *oplock, FILE_ALL_INFO *buf);
461extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
462 const char *fileName, const int disposition,
463 const int access_flags, const int omode,
464 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
465 const struct nls_table *nls_codepage, int remap);
466extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
467 u32 posix_flags, __u64 mode, __u16 *netfid,
468 FILE_UNIX_BASIC_INFO *pRetData,
469 __u32 *pOplock, const char *name,
470 const struct nls_table *nls_codepage, int remap);
471extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
472 const int smb_file_id);
473
474extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
475 const int smb_file_id);
476
477extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
478 unsigned int *nbytes, char **buf,
479 int *return_buf_type);
480extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
481 unsigned int *nbytes, const char *buf);
482extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
483 unsigned int *nbytes, struct kvec *iov, const int nvec);
484extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
485 const char *search_name, __u64 *inode_number,
486 const struct nls_table *nls_codepage,
487 int remap);
488
489extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
490 const __u16 netfid, const __u8 lock_type,
491 const __u32 num_unlock, const __u32 num_lock,
492 LOCKING_ANDX_RANGE *buf);
493extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
494 const __u16 netfid, const __u32 netpid, const __u64 len,
495 const __u64 offset, const __u32 numUnlock,
496 const __u32 numLock, const __u8 lockType,
497 const bool waitFlag, const __u8 oplock_level);
498extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
499 const __u16 smb_file_id, const __u32 netpid,
500 const loff_t start_offset, const __u64 len,
501 struct file_lock *, const __u16 lock_type,
502 const bool waitFlag);
503extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
504extern int CIFSSMBEcho(struct TCP_Server_Info *server);
505extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
506
507extern struct cifs_ses *sesInfoAlloc(void);
508extern void sesInfoFree(struct cifs_ses *);
509extern struct cifs_tcon *tconInfoAlloc(void);
510extern void tconInfoFree(struct cifs_tcon *);
511
512extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
513 __u32 *pexpected_response_sequence_number);
514extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
515 __u32 *);
516extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
517extern int cifs_verify_signature(struct smb_rqst *rqst,
518 struct TCP_Server_Info *server,
519 __u32 expected_sequence_number);
520extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
521extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
522extern int calc_seckey(struct cifs_ses *);
523extern int generate_smb30signingkey(struct cifs_ses *ses,
524 struct TCP_Server_Info *server);
525extern int generate_smb311signingkey(struct cifs_ses *ses,
526 struct TCP_Server_Info *server);
527
528#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
529extern int CIFSSMBCopy(unsigned int xid,
530 struct cifs_tcon *source_tcon,
531 const char *fromName,
532 const __u16 target_tid,
533 const char *toName, const int flags,
534 const struct nls_table *nls_codepage,
535 int remap_special_chars);
536extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
537 const unsigned char *searchName,
538 const unsigned char *ea_name, char *EAData,
539 size_t bufsize, struct cifs_sb_info *cifs_sb);
540extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
541 const char *fileName, const char *ea_name,
542 const void *ea_value, const __u16 ea_value_len,
543 const struct nls_table *nls_codepage,
544 struct cifs_sb_info *cifs_sb);
545extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
546 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
547extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
548 struct cifs_ntsd *, __u32, int);
549extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
550 const unsigned char *searchName,
551 struct posix_acl **acl, const int acl_type,
552 const struct nls_table *nls_codepage, int remap);
553extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
554 const unsigned char *fileName,
555 const struct posix_acl *acl, const int acl_type,
556 const struct nls_table *nls_codepage, int remap);
557extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
558 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
559#endif /* CIFS_ALLOW_INSECURE_LEGACY */
560extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
561extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
562extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
563 struct cifs_sb_info *cifs_sb,
564 struct cifs_fattr *fattr,
565 const unsigned char *path);
566extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
567 const struct nls_table *codepage);
568
569extern struct TCP_Server_Info *
570cifs_find_tcp_session(struct smb3_fs_context *ctx);
571
572extern void cifs_put_smb_ses(struct cifs_ses *ses);
573
574extern struct cifs_ses *
575cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
576
577void cifs_readdata_release(struct kref *refcount);
578int cifs_async_readv(struct cifs_readdata *rdata);
579int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
580
581int cifs_async_writev(struct cifs_writedata *wdata,
582 void (*release)(struct kref *kref));
583void cifs_writev_complete(struct work_struct *work);
584struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
585 work_func_t complete);
586struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
587 work_func_t complete);
588void cifs_writedata_release(struct kref *refcount);
589int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
590 struct cifs_sb_info *cifs_sb,
591 const unsigned char *path, char *pbuf,
592 unsigned int *pbytes_read);
593int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
594 struct cifs_sb_info *cifs_sb,
595 const unsigned char *path, char *pbuf,
596 unsigned int *pbytes_written);
597int __cifs_calc_signature(struct smb_rqst *rqst,
598 struct TCP_Server_Info *server, char *signature,
599 struct shash_desc *shash);
600enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
601 enum securityEnum);
602struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
603void cifs_aio_ctx_release(struct kref *refcount);
604int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
605
606int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
607void cifs_free_hash(struct shash_desc **sdesc);
608
609void rqst_page_get_length(const struct smb_rqst *rqst, unsigned int page,
610 unsigned int *len, unsigned int *offset);
611struct cifs_chan *
612cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
613int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
614bool is_server_using_iface(struct TCP_Server_Info *server,
615 struct cifs_server_iface *iface);
616bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
617void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
618
619unsigned int
620cifs_ses_get_chan_index(struct cifs_ses *ses,
621 struct TCP_Server_Info *server);
622void
623cifs_chan_set_in_reconnect(struct cifs_ses *ses,
624 struct TCP_Server_Info *server);
625void
626cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
627 struct TCP_Server_Info *server);
628bool
629cifs_chan_in_reconnect(struct cifs_ses *ses,
630 struct TCP_Server_Info *server);
631void
632cifs_chan_set_need_reconnect(struct cifs_ses *ses,
633 struct TCP_Server_Info *server);
634void
635cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
636 struct TCP_Server_Info *server);
637bool
638cifs_chan_needs_reconnect(struct cifs_ses *ses,
639 struct TCP_Server_Info *server);
640bool
641cifs_chan_is_iface_active(struct cifs_ses *ses,
642 struct TCP_Server_Info *server);
643int
644cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
645int
646SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
647
648void extract_unc_hostname(const char *unc, const char **h, size_t *len);
649int copy_path_name(char *dst, const char *src);
650int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
651 int resp_buftype,
652 struct cifs_search_info *srch_inf);
653
654struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
655void cifs_put_tcp_super(struct super_block *sb);
656int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
657char *extract_hostname(const char *unc);
658char *extract_sharename(const char *unc);
659
660#ifdef CONFIG_CIFS_DFS_UPCALL
661static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
662 const char *old_path,
663 const struct nls_table *nls_codepage,
664 struct dfs_info3_param *referral, int remap)
665{
666 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
667 referral, NULL);
668}
669
670int match_target_ip(struct TCP_Server_Info *server,
671 const char *share, size_t share_len,
672 bool *result);
673
674int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid,
675 struct cifs_tcon *tcon,
676 struct cifs_sb_info *cifs_sb,
677 const char *dfs_link_path);
678#endif
679
680static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
681{
682 if (cifs_sb && (backup_cred(cifs_sb)))
683 return options | CREATE_OPEN_BACKUP_INTENT;
684 else
685 return options;
686}
687
688struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
689void cifs_put_tcon_super(struct super_block *sb);
690
691#endif /* _CIFSPROTO_H */
1/* SPDX-License-Identifier: LGPL-2.1 */
2/*
3 * fs/cifs/cifsproto.h
4 *
5 * Copyright (c) International Business Machines Corp., 2002,2008
6 * Author(s): Steve French (sfrench@us.ibm.com)
7 *
8 */
9#ifndef _CIFSPROTO_H
10#define _CIFSPROTO_H
11#include <linux/nls.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 *);
61extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
62 void *page, bool prefix);
63static inline void *alloc_dentry_path(void)
64{
65 return __getname();
66}
67
68static inline void free_dentry_path(void *page)
69{
70 if (page)
71 __putname(page);
72}
73
74extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
75 struct cifs_sb_info *cifs_sb,
76 struct cifs_tcon *tcon,
77 int add_treename);
78extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
79extern char *cifs_compose_mount_options(const char *sb_mountdata,
80 const char *fullpath, const struct dfs_info3_param *ref,
81 char **devname);
82/* extern void renew_parental_timestamps(struct dentry *direntry);*/
83extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
84 struct TCP_Server_Info *server);
85extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
86extern void cifs_delete_mid(struct mid_q_entry *mid);
87extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
88extern void cifs_wake_up_task(struct mid_q_entry *mid);
89extern int cifs_handle_standard(struct TCP_Server_Info *server,
90 struct mid_q_entry *mid);
91extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
92extern int smb3_parse_opt(const char *options, const char *key, char **val);
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 unsigned int size, unsigned int *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);
135extern int cifs_reconnect(struct TCP_Server_Info *server);
136extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
137extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
138extern bool backup_cred(struct cifs_sb_info *);
139extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
140extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
141 unsigned int bytes_written);
142extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
143extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
144 int flags,
145 struct cifsFileInfo **ret_file);
146extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
147 int flags,
148 struct cifsFileInfo **ret_file);
149extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
150extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
151 struct cifsFileInfo **ret_file);
152extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
153extern int decode_negTokenInit(unsigned char *security_blob, int length,
154 struct TCP_Server_Info *server);
155extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
156extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
157extern int map_smb_to_linux_error(char *buf, bool logErr);
158extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
159extern void header_assemble(struct smb_hdr *, char /* command */ ,
160 const struct cifs_tcon *, int /* length of
161 fixed section (word count) in two byte units */);
162extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
163 struct cifs_ses *ses,
164 void **request_buf);
165extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
166 enum securityEnum requested);
167extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
168 const struct nls_table *nls_cp);
169extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
170extern u64 cifs_UnixTimeToNT(struct timespec64);
171extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
172 int offset);
173extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
174extern int cifs_get_writer(struct cifsInodeInfo *cinode);
175extern void cifs_put_writer(struct cifsInodeInfo *cinode);
176extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
177extern int cifs_unlock_range(struct cifsFileInfo *cfile,
178 struct file_lock *flock, const unsigned int xid);
179extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
180
181extern void cifs_down_write(struct rw_semaphore *sem);
182extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
183 struct file *file,
184 struct tcon_link *tlink,
185 __u32 oplock);
186extern int cifs_posix_open(const char *full_path, struct inode **inode,
187 struct super_block *sb, int mode,
188 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
189 unsigned int xid);
190void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
191extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
192 FILE_UNIX_BASIC_INFO *info,
193 struct cifs_sb_info *cifs_sb);
194extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
195 struct cifs_sb_info *);
196extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
197extern struct inode *cifs_iget(struct super_block *sb,
198 struct cifs_fattr *fattr);
199
200extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
201 FILE_ALL_INFO *data, struct super_block *sb,
202 int xid, const struct cifs_fid *fid);
203extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
204 struct super_block *sb, unsigned int xid);
205extern int cifs_get_inode_info_unix(struct inode **pinode,
206 const unsigned char *search_path,
207 struct super_block *sb, unsigned int xid);
208extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
209 unsigned int xid, const char *full_path, __u32 dosattr);
210extern int cifs_rename_pending_delete(const char *full_path,
211 struct dentry *dentry,
212 const unsigned int xid);
213extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
214 struct cifs_fattr *fattr, uint sidtype);
215extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
216 struct cifs_fattr *fattr, struct inode *inode,
217 bool get_mode_from_special_sid,
218 const char *path, const struct cifs_fid *pfid);
219extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
220 kuid_t uid, kgid_t gid);
221extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
222 const char *, u32 *, u32);
223extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
224 const struct cifs_fid *, u32 *, u32);
225extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
226 const char *, int);
227extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
228extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
229extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
230
231extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
232extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
233 unsigned int to_read);
234extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
235 size_t to_read);
236extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
237 struct page *page,
238 unsigned int page_offset,
239 unsigned int to_read);
240extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
241extern int cifs_match_super(struct super_block *, void *);
242extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
243extern void cifs_umount(struct cifs_sb_info *);
244extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
245extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
246
247extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
248 __u64 length, __u8 type, __u16 flags,
249 struct cifsLockInfo **conf_lock,
250 int rw_check);
251extern void cifs_add_pending_open(struct cifs_fid *fid,
252 struct tcon_link *tlink,
253 struct cifs_pending_open *open);
254extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
255 struct tcon_link *tlink,
256 struct cifs_pending_open *open);
257extern void cifs_del_pending_open(struct cifs_pending_open *open);
258
259extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
260 struct cifs_deferred_close **dclose);
261
262extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
263 struct cifs_deferred_close *dclose);
264
265extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
266
267extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
268
269extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
270
271extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb3_fs_context *ctx);
272extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
273 int from_reconnect);
274extern void cifs_put_tcon(struct cifs_tcon *tcon);
275
276#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
277extern void cifs_dfs_release_automount_timer(void);
278#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
279#define cifs_dfs_release_automount_timer() do { } while (0)
280#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
281
282void cifs_proc_init(void);
283void cifs_proc_clean(void);
284
285extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
286extern void cifs_free_llist(struct list_head *llist);
287extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
288
289extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
290 const struct nls_table *nlsc);
291
292extern int cifs_negotiate_protocol(const unsigned int xid,
293 struct cifs_ses *ses);
294extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
295 struct nls_table *nls_info);
296extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
297extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
298
299extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
300 const char *tree, struct cifs_tcon *tcon,
301 const struct nls_table *);
302
303extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
304 const char *searchName, struct cifs_sb_info *cifs_sb,
305 __u16 *searchHandle, __u16 search_flags,
306 struct cifs_search_info *psrch_inf,
307 bool msearch);
308
309extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
310 __u16 searchHandle, __u16 search_flags,
311 struct cifs_search_info *psrch_inf);
312
313extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
314 const __u16 search_handle);
315
316extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
317 u16 netfid, FILE_ALL_INFO *pFindData);
318extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
319 const char *search_Name, FILE_ALL_INFO *data,
320 int legacy /* whether to use old info level */,
321 const struct nls_table *nls_codepage, int remap);
322extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
323 const char *search_name, FILE_ALL_INFO *data,
324 const struct nls_table *nls_codepage, int remap);
325
326extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
327 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
328extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
329 struct cifs_tcon *tcon,
330 const unsigned char *searchName,
331 FILE_UNIX_BASIC_INFO *pFindData,
332 const struct nls_table *nls_codepage, int remap);
333
334extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
335 const char *search_name,
336 struct dfs_info3_param **target_nodes,
337 unsigned int *num_of_nodes,
338 const struct nls_table *nls_codepage, int remap);
339
340extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
341 unsigned int *num_of_nodes,
342 struct dfs_info3_param **target_nodes,
343 const struct nls_table *nls_codepage, int remap,
344 const char *searchName, bool is_unicode);
345extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
346 struct cifs_sb_info *cifs_sb,
347 struct smb3_fs_context *ctx);
348extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
349 struct kstatfs *FSData);
350extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
351 struct kstatfs *FSData);
352extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
353 __u64 cap);
354
355extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
356 struct cifs_tcon *tcon);
357extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
358extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
359extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
360 struct kstatfs *FSData);
361
362extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
363 const char *fileName, const FILE_BASIC_INFO *data,
364 const struct nls_table *nls_codepage,
365 struct cifs_sb_info *cifs_sb);
366extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
367 const FILE_BASIC_INFO *data, __u16 fid,
368 __u32 pid_of_opener);
369extern int CIFSSMBSetFileDisposition(const unsigned int xid,
370 struct cifs_tcon *tcon,
371 bool delete_file, __u16 fid,
372 __u32 pid_of_opener);
373extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
374 const char *file_name, __u64 size,
375 struct cifs_sb_info *cifs_sb, bool set_allocation);
376extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
377 struct cifsFileInfo *cfile, __u64 size,
378 bool set_allocation);
379
380struct cifs_unix_set_info_args {
381 __u64 ctime;
382 __u64 atime;
383 __u64 mtime;
384 __u64 mode;
385 kuid_t uid;
386 kgid_t gid;
387 dev_t device;
388};
389
390extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
391 struct cifs_tcon *tcon,
392 const struct cifs_unix_set_info_args *args,
393 u16 fid, u32 pid_of_opener);
394
395extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
396 struct cifs_tcon *tcon, const char *file_name,
397 const struct cifs_unix_set_info_args *args,
398 const struct nls_table *nls_codepage,
399 int remap);
400
401extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
402 umode_t mode, struct cifs_tcon *tcon,
403 const char *name, struct cifs_sb_info *cifs_sb);
404extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
405 const char *name, struct cifs_sb_info *cifs_sb);
406extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
407 const char *name, __u16 type,
408 const struct nls_table *nls_codepage,
409 int remap_special_chars);
410extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
411 const char *name, struct cifs_sb_info *cifs_sb);
412extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
413 const char *from_name, const char *to_name,
414 struct cifs_sb_info *cifs_sb);
415extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
416 int netfid, const char *target_name,
417 const struct nls_table *nls_codepage,
418 int remap_special_chars);
419extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
420 const char *from_name, const char *to_name,
421 struct cifs_sb_info *cifs_sb);
422extern int CIFSUnixCreateHardLink(const unsigned int xid,
423 struct cifs_tcon *tcon,
424 const char *fromName, const char *toName,
425 const struct nls_table *nls_codepage,
426 int remap_special_chars);
427extern int CIFSUnixCreateSymLink(const unsigned int xid,
428 struct cifs_tcon *tcon,
429 const char *fromName, const char *toName,
430 const struct nls_table *nls_codepage, int remap);
431extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
432 struct cifs_tcon *tcon,
433 const unsigned char *searchName, char **syminfo,
434 const struct nls_table *nls_codepage, int remap);
435extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
436 __u16 fid, char **symlinkinfo,
437 const struct nls_table *nls_codepage);
438extern int CIFSSMB_set_compression(const unsigned int xid,
439 struct cifs_tcon *tcon, __u16 fid);
440extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
441 int *oplock, FILE_ALL_INFO *buf);
442extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
443 const char *fileName, const int disposition,
444 const int access_flags, const int omode,
445 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
446 const struct nls_table *nls_codepage, int remap);
447extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
448 u32 posix_flags, __u64 mode, __u16 *netfid,
449 FILE_UNIX_BASIC_INFO *pRetData,
450 __u32 *pOplock, const char *name,
451 const struct nls_table *nls_codepage, int remap);
452extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
453 const int smb_file_id);
454
455extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
456 const int smb_file_id);
457
458extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
459 unsigned int *nbytes, char **buf,
460 int *return_buf_type);
461extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
462 unsigned int *nbytes, const char *buf);
463extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
464 unsigned int *nbytes, struct kvec *iov, const int nvec);
465extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
466 const char *search_name, __u64 *inode_number,
467 const struct nls_table *nls_codepage,
468 int remap);
469
470extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
471 const __u16 netfid, const __u8 lock_type,
472 const __u32 num_unlock, const __u32 num_lock,
473 LOCKING_ANDX_RANGE *buf);
474extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
475 const __u16 netfid, const __u32 netpid, const __u64 len,
476 const __u64 offset, const __u32 numUnlock,
477 const __u32 numLock, const __u8 lockType,
478 const bool waitFlag, const __u8 oplock_level);
479extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
480 const __u16 smb_file_id, const __u32 netpid,
481 const loff_t start_offset, const __u64 len,
482 struct file_lock *, const __u16 lock_type,
483 const bool waitFlag);
484extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
485extern int CIFSSMBEcho(struct TCP_Server_Info *server);
486extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
487
488extern struct cifs_ses *sesInfoAlloc(void);
489extern void sesInfoFree(struct cifs_ses *);
490extern struct cifs_tcon *tconInfoAlloc(void);
491extern void tconInfoFree(struct cifs_tcon *);
492
493extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
494 __u32 *pexpected_response_sequence_number);
495extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
496 __u32 *);
497extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
498extern int cifs_verify_signature(struct smb_rqst *rqst,
499 struct TCP_Server_Info *server,
500 __u32 expected_sequence_number);
501extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
502 const struct nls_table *);
503extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
504extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
505extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
506extern int calc_seckey(struct cifs_ses *);
507extern int generate_smb30signingkey(struct cifs_ses *);
508extern int generate_smb311signingkey(struct cifs_ses *);
509
510#ifdef CONFIG_CIFS_WEAK_PW_HASH
511extern int calc_lanman_hash(const char *password, const char *cryptkey,
512 bool encrypt, char *lnm_session_key);
513#endif /* CIFS_WEAK_PW_HASH */
514extern int CIFSSMBCopy(unsigned int xid,
515 struct cifs_tcon *source_tcon,
516 const char *fromName,
517 const __u16 target_tid,
518 const char *toName, const int flags,
519 const struct nls_table *nls_codepage,
520 int remap_special_chars);
521extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
522 const unsigned char *searchName,
523 const unsigned char *ea_name, char *EAData,
524 size_t bufsize, struct cifs_sb_info *cifs_sb);
525extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
526 const char *fileName, const char *ea_name,
527 const void *ea_value, const __u16 ea_value_len,
528 const struct nls_table *nls_codepage,
529 struct cifs_sb_info *cifs_sb);
530extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
531 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
532extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
533 struct cifs_ntsd *, __u32, int);
534extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
535 const unsigned char *searchName,
536 char *acl_inf, const int buflen, const int acl_type,
537 const struct nls_table *nls_codepage, int remap_special_chars);
538extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
539 const unsigned char *fileName,
540 const char *local_acl, const int buflen, const int acl_type,
541 const struct nls_table *nls_codepage, int remap_special_chars);
542extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
543 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
544extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
545extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
546extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
547 struct cifs_sb_info *cifs_sb,
548 struct cifs_fattr *fattr,
549 const unsigned char *path);
550extern int mdfour(unsigned char *, unsigned char *, int);
551extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
552 const struct nls_table *codepage);
553extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
554 unsigned char *p24);
555
556extern int
557cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);
558
559extern struct TCP_Server_Info *
560cifs_find_tcp_session(struct smb3_fs_context *ctx);
561
562extern void cifs_put_smb_ses(struct cifs_ses *ses);
563
564extern struct cifs_ses *
565cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
566
567void cifs_readdata_release(struct kref *refcount);
568int cifs_async_readv(struct cifs_readdata *rdata);
569int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
570
571int cifs_async_writev(struct cifs_writedata *wdata,
572 void (*release)(struct kref *kref));
573void cifs_writev_complete(struct work_struct *work);
574struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
575 work_func_t complete);
576struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
577 work_func_t complete);
578void cifs_writedata_release(struct kref *refcount);
579int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
580 struct cifs_sb_info *cifs_sb,
581 const unsigned char *path, char *pbuf,
582 unsigned int *pbytes_read);
583int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
584 struct cifs_sb_info *cifs_sb,
585 const unsigned char *path, char *pbuf,
586 unsigned int *pbytes_written);
587int __cifs_calc_signature(struct smb_rqst *rqst,
588 struct TCP_Server_Info *server, char *signature,
589 struct shash_desc *shash);
590enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
591 enum securityEnum);
592struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
593void cifs_aio_ctx_release(struct kref *refcount);
594int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
595void smb2_cached_lease_break(struct work_struct *work);
596
597int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
598 struct sdesc **sdesc);
599void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
600
601extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
602 unsigned int *len, unsigned int *offset);
603struct cifs_chan *
604cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
605int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
606bool is_server_using_iface(struct TCP_Server_Info *server,
607 struct cifs_server_iface *iface);
608bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
609
610void extract_unc_hostname(const char *unc, const char **h, size_t *len);
611int copy_path_name(char *dst, const char *src);
612int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
613 int resp_buftype,
614 struct cifs_search_info *srch_inf);
615
616struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
617void cifs_put_tcp_super(struct super_block *sb);
618int update_super_prepath(struct cifs_tcon *tcon, char *prefix);
619char *extract_hostname(const char *unc);
620char *extract_sharename(const char *unc);
621
622#ifdef CONFIG_CIFS_DFS_UPCALL
623static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
624 const char *old_path,
625 const struct nls_table *nls_codepage,
626 struct dfs_info3_param *referral, int remap)
627{
628 return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
629 referral, NULL);
630}
631
632int match_target_ip(struct TCP_Server_Info *server,
633 const char *share, size_t share_len,
634 bool *result);
635#endif
636
637static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
638{
639 if (cifs_sb && (backup_cred(cifs_sb)))
640 return options | CREATE_OPEN_BACKUP_INTENT;
641 else
642 return options;
643}
644
645#endif /* _CIFSPROTO_H */