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 #include <linux/fs.h>
9 #include <linux/stat.h>
10 #include <linux/slab.h>
11 #include <linux/namei.h>
12 #include "cifsfs.h"
13 #include "cifspdu.h"
14 #include "cifsglob.h"
15 #include "cifsproto.h"
16 #include "cifs_debug.h"
17 #include "cifs_fs_sb.h"
18 #include "cifs_unicode.h"
19 #include "smb2proto.h"
20 #include "cifs_ioctl.h"
21
22 /*
23 * M-F Symlink Functions - Begin
24 */
25
26 #define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
27 #define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
28 #define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
29 #define CIFS_MF_SYMLINK_LINK_MAXLEN (1024)
30 #define CIFS_MF_SYMLINK_FILE_SIZE \
31 (CIFS_MF_SYMLINK_LINK_OFFSET + CIFS_MF_SYMLINK_LINK_MAXLEN)
32
33 #define CIFS_MF_SYMLINK_LEN_FORMAT "XSym\n%04u\n"
34 #define CIFS_MF_SYMLINK_MD5_FORMAT "%16phN\n"
35 #define CIFS_MF_SYMLINK_MD5_ARGS(md5_hash) md5_hash
36
37 static int
symlink_hash(unsigned int link_len,const char * link_str,u8 * md5_hash)38 symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
39 {
40 int rc;
41 struct shash_desc *md5 = NULL;
42
43 rc = cifs_alloc_hash("md5", &md5);
44 if (rc)
45 goto symlink_hash_err;
46
47 rc = crypto_shash_init(md5);
48 if (rc) {
49 cifs_dbg(VFS, "%s: Could not init md5 shash\n", __func__);
50 goto symlink_hash_err;
51 }
52 rc = crypto_shash_update(md5, link_str, link_len);
53 if (rc) {
54 cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__);
55 goto symlink_hash_err;
56 }
57 rc = crypto_shash_final(md5, md5_hash);
58 if (rc)
59 cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
60
61 symlink_hash_err:
62 cifs_free_hash(&md5);
63 return rc;
64 }
65
66 static int
parse_mf_symlink(const u8 * buf,unsigned int buf_len,unsigned int * _link_len,char ** _link_str)67 parse_mf_symlink(const u8 *buf, unsigned int buf_len, unsigned int *_link_len,
68 char **_link_str)
69 {
70 int rc;
71 unsigned int link_len;
72 const char *md5_str1;
73 const char *link_str;
74 u8 md5_hash[16];
75 char md5_str2[34];
76
77 if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
78 return -EINVAL;
79
80 md5_str1 = (const char *)&buf[CIFS_MF_SYMLINK_MD5_OFFSET];
81 link_str = (const char *)&buf[CIFS_MF_SYMLINK_LINK_OFFSET];
82
83 rc = sscanf(buf, CIFS_MF_SYMLINK_LEN_FORMAT, &link_len);
84 if (rc != 1)
85 return -EINVAL;
86
87 if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
88 return -EINVAL;
89
90 rc = symlink_hash(link_len, link_str, md5_hash);
91 if (rc) {
92 cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
93 return rc;
94 }
95
96 scnprintf(md5_str2, sizeof(md5_str2),
97 CIFS_MF_SYMLINK_MD5_FORMAT,
98 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
99
100 if (strncmp(md5_str1, md5_str2, 17) != 0)
101 return -EINVAL;
102
103 if (_link_str) {
104 *_link_str = kstrndup(link_str, link_len, GFP_KERNEL);
105 if (!*_link_str)
106 return -ENOMEM;
107 }
108
109 *_link_len = link_len;
110 return 0;
111 }
112
113 static int
format_mf_symlink(u8 * buf,unsigned int buf_len,const char * link_str)114 format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
115 {
116 int rc;
117 unsigned int link_len;
118 unsigned int ofs;
119 u8 md5_hash[16];
120
121 if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
122 return -EINVAL;
123
124 link_len = strlen(link_str);
125
126 if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
127 return -ENAMETOOLONG;
128
129 rc = symlink_hash(link_len, link_str, md5_hash);
130 if (rc) {
131 cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
132 return rc;
133 }
134
135 scnprintf(buf, buf_len,
136 CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
137 link_len,
138 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
139
140 ofs = CIFS_MF_SYMLINK_LINK_OFFSET;
141 memcpy(buf + ofs, link_str, link_len);
142
143 ofs += link_len;
144 if (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
145 buf[ofs] = '\n';
146 ofs++;
147 }
148
149 while (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
150 buf[ofs] = ' ';
151 ofs++;
152 }
153
154 return 0;
155 }
156
157 bool
couldbe_mf_symlink(const struct cifs_fattr * fattr)158 couldbe_mf_symlink(const struct cifs_fattr *fattr)
159 {
160 if (!S_ISREG(fattr->cf_mode))
161 /* it's not a symlink */
162 return false;
163
164 if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
165 /* it's not a symlink */
166 return false;
167
168 return true;
169 }
170
171 static int
create_mf_symlink(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * fromName,const char * toName)172 create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
173 struct cifs_sb_info *cifs_sb, const char *fromName,
174 const char *toName)
175 {
176 int rc;
177 u8 *buf;
178 unsigned int bytes_written = 0;
179
180 buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
181 if (!buf)
182 return -ENOMEM;
183
184 rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
185 if (rc)
186 goto out;
187
188 if (tcon->ses->server->ops->create_mf_symlink)
189 rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon,
190 cifs_sb, fromName, buf, &bytes_written);
191 else
192 rc = -EOPNOTSUPP;
193
194 if (rc)
195 goto out;
196
197 if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
198 rc = -EIO;
199 out:
200 kfree(buf);
201 return rc;
202 }
203
204 int
check_mf_symlink(unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,struct cifs_fattr * fattr,const unsigned char * path)205 check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
206 struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
207 const unsigned char *path)
208 {
209 int rc;
210 u8 *buf = NULL;
211 unsigned int link_len = 0;
212 unsigned int bytes_read = 0;
213 char *symlink = NULL;
214
215 if (!couldbe_mf_symlink(fattr))
216 /* it's not a symlink */
217 return 0;
218
219 buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
220 if (!buf)
221 return -ENOMEM;
222
223 if (tcon->ses->server->ops->query_mf_symlink)
224 rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
225 cifs_sb, path, buf, &bytes_read);
226 else
227 rc = -ENOSYS;
228
229 if (rc)
230 goto out;
231
232 if (bytes_read == 0) /* not a symlink */
233 goto out;
234
235 rc = parse_mf_symlink(buf, bytes_read, &link_len, &symlink);
236 if (rc == -EINVAL) {
237 /* it's not a symlink */
238 rc = 0;
239 goto out;
240 }
241
242 if (rc != 0)
243 goto out;
244
245 /* it is a symlink */
246 fattr->cf_eof = link_len;
247 fattr->cf_mode &= ~S_IFMT;
248 fattr->cf_mode |= S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
249 fattr->cf_dtype = DT_LNK;
250 fattr->cf_symlink_target = symlink;
251 out:
252 kfree(buf);
253 return rc;
254 }
255
256 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
257 /*
258 * SMB 1.0 Protocol specific functions
259 */
260
261 int
cifs_query_mf_symlink(unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const unsigned char * path,char * pbuf,unsigned int * pbytes_read)262 cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
263 struct cifs_sb_info *cifs_sb, const unsigned char *path,
264 char *pbuf, unsigned int *pbytes_read)
265 {
266 int rc;
267 int oplock = 0;
268 struct cifs_fid fid;
269 struct cifs_open_parms oparms;
270 struct cifs_io_parms io_parms = {0};
271 int buf_type = CIFS_NO_BUFFER;
272 FILE_ALL_INFO file_info;
273
274 oparms.tcon = tcon;
275 oparms.cifs_sb = cifs_sb;
276 oparms.desired_access = GENERIC_READ;
277 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
278 oparms.disposition = FILE_OPEN;
279 oparms.path = path;
280 oparms.fid = &fid;
281 oparms.reconnect = false;
282
283 rc = CIFS_open(xid, &oparms, &oplock, &file_info);
284 if (rc)
285 return rc;
286
287 if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
288 rc = -ENOENT;
289 /* it's not a symlink */
290 goto out;
291 }
292
293 io_parms.netfid = fid.netfid;
294 io_parms.pid = current->tgid;
295 io_parms.tcon = tcon;
296 io_parms.offset = 0;
297 io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
298
299 rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
300 out:
301 CIFSSMBClose(xid, tcon, fid.netfid);
302 return rc;
303 }
304
305 int
cifs_create_mf_symlink(unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const unsigned char * path,char * pbuf,unsigned int * pbytes_written)306 cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
307 struct cifs_sb_info *cifs_sb, const unsigned char *path,
308 char *pbuf, unsigned int *pbytes_written)
309 {
310 int rc;
311 int oplock = 0;
312 struct cifs_fid fid;
313 struct cifs_open_parms oparms;
314 struct cifs_io_parms io_parms = {0};
315
316 oparms.tcon = tcon;
317 oparms.cifs_sb = cifs_sb;
318 oparms.desired_access = GENERIC_WRITE;
319 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
320 oparms.disposition = FILE_CREATE;
321 oparms.path = path;
322 oparms.fid = &fid;
323 oparms.reconnect = false;
324
325 rc = CIFS_open(xid, &oparms, &oplock, NULL);
326 if (rc)
327 return rc;
328
329 io_parms.netfid = fid.netfid;
330 io_parms.pid = current->tgid;
331 io_parms.tcon = tcon;
332 io_parms.offset = 0;
333 io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
334
335 rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf);
336 CIFSSMBClose(xid, tcon, fid.netfid);
337 return rc;
338 }
339 #endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
340
341 /*
342 * SMB 2.1/SMB3 Protocol specific functions
343 */
344 int
smb3_query_mf_symlink(unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const unsigned char * path,char * pbuf,unsigned int * pbytes_read)345 smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
346 struct cifs_sb_info *cifs_sb, const unsigned char *path,
347 char *pbuf, unsigned int *pbytes_read)
348 {
349 int rc;
350 struct cifs_fid fid;
351 struct cifs_open_parms oparms;
352 struct cifs_io_parms io_parms = {0};
353 int buf_type = CIFS_NO_BUFFER;
354 __le16 *utf16_path;
355 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
356 struct smb2_file_all_info *pfile_info = NULL;
357
358 oparms.tcon = tcon;
359 oparms.cifs_sb = cifs_sb;
360 oparms.desired_access = GENERIC_READ;
361 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
362 oparms.disposition = FILE_OPEN;
363 oparms.fid = &fid;
364 oparms.reconnect = false;
365
366 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
367 if (utf16_path == NULL)
368 return -ENOMEM;
369
370 pfile_info = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
371 GFP_KERNEL);
372
373 if (pfile_info == NULL) {
374 kfree(utf16_path);
375 return -ENOMEM;
376 }
377
378 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, pfile_info, NULL,
379 NULL, NULL);
380 if (rc)
381 goto qmf_out_open_fail;
382
383 if (pfile_info->EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
384 /* it's not a symlink */
385 rc = -ENOENT; /* Is there a better rc to return? */
386 goto qmf_out;
387 }
388
389 io_parms.netfid = fid.netfid;
390 io_parms.pid = current->tgid;
391 io_parms.tcon = tcon;
392 io_parms.offset = 0;
393 io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
394 io_parms.persistent_fid = fid.persistent_fid;
395 io_parms.volatile_fid = fid.volatile_fid;
396 rc = SMB2_read(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
397 qmf_out:
398 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
399 qmf_out_open_fail:
400 kfree(utf16_path);
401 kfree(pfile_info);
402 return rc;
403 }
404
405 int
smb3_create_mf_symlink(unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const unsigned char * path,char * pbuf,unsigned int * pbytes_written)406 smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
407 struct cifs_sb_info *cifs_sb, const unsigned char *path,
408 char *pbuf, unsigned int *pbytes_written)
409 {
410 int rc;
411 struct cifs_fid fid;
412 struct cifs_open_parms oparms;
413 struct cifs_io_parms io_parms = {0};
414 __le16 *utf16_path;
415 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
416 struct kvec iov[2];
417
418 cifs_dbg(FYI, "%s: path: %s\n", __func__, path);
419
420 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
421 if (!utf16_path)
422 return -ENOMEM;
423
424 oparms.tcon = tcon;
425 oparms.cifs_sb = cifs_sb;
426 oparms.desired_access = GENERIC_WRITE;
427 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
428 oparms.disposition = FILE_CREATE;
429 oparms.fid = &fid;
430 oparms.reconnect = false;
431
432 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
433 NULL, NULL);
434 if (rc) {
435 kfree(utf16_path);
436 return rc;
437 }
438
439 io_parms.netfid = fid.netfid;
440 io_parms.pid = current->tgid;
441 io_parms.tcon = tcon;
442 io_parms.offset = 0;
443 io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
444 io_parms.persistent_fid = fid.persistent_fid;
445 io_parms.volatile_fid = fid.volatile_fid;
446
447 /* iov[0] is reserved for smb header */
448 iov[1].iov_base = pbuf;
449 iov[1].iov_len = CIFS_MF_SYMLINK_FILE_SIZE;
450
451 rc = SMB2_write(xid, &io_parms, pbytes_written, iov, 1);
452
453 /* Make sure we wrote all of the symlink data */
454 if ((rc == 0) && (*pbytes_written != CIFS_MF_SYMLINK_FILE_SIZE))
455 rc = -EIO;
456
457 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
458
459 kfree(utf16_path);
460 return rc;
461 }
462
463 /*
464 * M-F Symlink Functions - End
465 */
466
467 int
cifs_hardlink(struct dentry * old_file,struct inode * inode,struct dentry * direntry)468 cifs_hardlink(struct dentry *old_file, struct inode *inode,
469 struct dentry *direntry)
470 {
471 int rc = -EACCES;
472 unsigned int xid;
473 const char *from_name, *to_name;
474 void *page1, *page2;
475 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
476 struct tcon_link *tlink;
477 struct cifs_tcon *tcon;
478 struct TCP_Server_Info *server;
479 struct cifsInodeInfo *cifsInode;
480
481 if (unlikely(cifs_forced_shutdown(cifs_sb)))
482 return -EIO;
483
484 tlink = cifs_sb_tlink(cifs_sb);
485 if (IS_ERR(tlink))
486 return PTR_ERR(tlink);
487 tcon = tlink_tcon(tlink);
488
489 xid = get_xid();
490 page1 = alloc_dentry_path();
491 page2 = alloc_dentry_path();
492
493 from_name = build_path_from_dentry(old_file, page1);
494 if (IS_ERR(from_name)) {
495 rc = PTR_ERR(from_name);
496 goto cifs_hl_exit;
497 }
498 to_name = build_path_from_dentry(direntry, page2);
499 if (IS_ERR(to_name)) {
500 rc = PTR_ERR(to_name);
501 goto cifs_hl_exit;
502 }
503
504 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
505 if (tcon->unix_ext)
506 rc = CIFSUnixCreateHardLink(xid, tcon, from_name, to_name,
507 cifs_sb->local_nls,
508 cifs_remap(cifs_sb));
509 else {
510 #else
511 {
512 #endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
513 server = tcon->ses->server;
514 if (!server->ops->create_hardlink) {
515 rc = -ENOSYS;
516 goto cifs_hl_exit;
517 }
518 rc = server->ops->create_hardlink(xid, tcon, from_name, to_name,
519 cifs_sb);
520 if ((rc == -EIO) || (rc == -EINVAL))
521 rc = -EOPNOTSUPP;
522 }
523
524 d_drop(direntry); /* force new lookup from server of target */
525
526 /*
527 * if source file is cached (oplocked) revalidate will not go to server
528 * until the file is closed or oplock broken so update nlinks locally
529 */
530 if (d_really_is_positive(old_file)) {
531 cifsInode = CIFS_I(d_inode(old_file));
532 if (rc == 0) {
533 spin_lock(&d_inode(old_file)->i_lock);
534 inc_nlink(d_inode(old_file));
535 spin_unlock(&d_inode(old_file)->i_lock);
536
537 /*
538 * parent dir timestamps will update from srv within a
539 * second, would it really be worth it to set the parent
540 * dir cifs inode time to zero to force revalidate
541 * (faster) for it too?
542 */
543 }
544 /*
545 * if not oplocked will force revalidate to get info on source
546 * file from srv. Note Samba server prior to 4.2 has bug -
547 * not updating src file ctime on hardlinks but Windows servers
548 * handle it properly
549 */
550 cifsInode->time = 0;
551
552 /*
553 * Will update parent dir timestamps from srv within a second.
554 * Would it really be worth it to set the parent dir (cifs
555 * inode) time field to zero to force revalidate on parent
556 * directory faster ie
557 *
558 * CIFS_I(inode)->time = 0;
559 */
560 }
561
562 cifs_hl_exit:
563 free_dentry_path(page1);
564 free_dentry_path(page2);
565 free_xid(xid);
566 cifs_put_tlink(tlink);
567 return rc;
568 }
569
570 int
571 cifs_symlink(struct user_namespace *mnt_userns, struct inode *inode,
572 struct dentry *direntry, const char *symname)
573 {
574 int rc = -EOPNOTSUPP;
575 unsigned int xid;
576 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
577 struct tcon_link *tlink;
578 struct cifs_tcon *pTcon;
579 const char *full_path;
580 void *page;
581 struct inode *newinode = NULL;
582
583 if (unlikely(cifs_forced_shutdown(cifs_sb)))
584 return -EIO;
585
586 page = alloc_dentry_path();
587 if (!page)
588 return -ENOMEM;
589
590 xid = get_xid();
591
592 tlink = cifs_sb_tlink(cifs_sb);
593 if (IS_ERR(tlink)) {
594 rc = PTR_ERR(tlink);
595 goto symlink_exit;
596 }
597 pTcon = tlink_tcon(tlink);
598
599 full_path = build_path_from_dentry(direntry, page);
600 if (IS_ERR(full_path)) {
601 rc = PTR_ERR(full_path);
602 goto symlink_exit;
603 }
604
605 cifs_dbg(FYI, "Full path: %s\n", full_path);
606 cifs_dbg(FYI, "symname is %s\n", symname);
607
608 /* BB what if DFS and this volume is on different share? BB */
609 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
610 rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname);
611 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
612 else if (pTcon->unix_ext)
613 rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
614 cifs_sb->local_nls,
615 cifs_remap(cifs_sb));
616 #endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
617 /* else
618 rc = CIFSCreateReparseSymLink(xid, pTcon, fromName, toName,
619 cifs_sb_target->local_nls); */
620
621 if (rc == 0) {
622 if (pTcon->posix_extensions)
623 rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
624 else if (pTcon->unix_ext)
625 rc = cifs_get_inode_info_unix(&newinode, full_path,
626 inode->i_sb, xid);
627 else
628 rc = cifs_get_inode_info(&newinode, full_path, NULL,
629 inode->i_sb, xid, NULL);
630
631 if (rc != 0) {
632 cifs_dbg(FYI, "Create symlink ok, getinodeinfo fail rc = %d\n",
633 rc);
634 } else {
635 d_instantiate(direntry, newinode);
636 }
637 }
638 symlink_exit:
639 free_dentry_path(page);
640 cifs_put_tlink(tlink);
641 free_xid(xid);
642 return rc;
643 }
644
