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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/readdir.c | |
3 | * | |
4 | * Directory search handling | |
6dc0f87e | 5 | * |
ad7a2926 | 6 | * Copyright (C) International Business Machines Corp., 2004, 2008 |
1da177e4 LT |
7 | * Author(s): Steve French (sfrench@us.ibm.com) |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | #include <linux/fs.h> | |
273d81d6 | 24 | #include <linux/pagemap.h> |
1da177e4 | 25 | #include <linux/stat.h> |
1da177e4 LT |
26 | #include "cifspdu.h" |
27 | #include "cifsglob.h" | |
28 | #include "cifsproto.h" | |
29 | #include "cifs_unicode.h" | |
30 | #include "cifs_debug.h" | |
31 | #include "cifs_fs_sb.h" | |
32 | #include "cifsfs.h" | |
33 | ||
f5884166 JL |
34 | /* |
35 | * To be safe - for UCS to UTF-8 with strings loaded with the rare long | |
36 | * characters alloc more to account for such multibyte target UTF-8 | |
37 | * characters. | |
38 | */ | |
39 | #define UNICODE_NAME_MAX ((4 * NAME_MAX) + 2) | |
40 | ||
3979877e SF |
41 | #ifdef CONFIG_CIFS_DEBUG2 |
42 | static void dump_cifs_file_struct(struct file *file, char *label) | |
1da177e4 | 43 | { |
6dc0f87e | 44 | struct cifsFileInfo *cf; |
1da177e4 | 45 | |
4523cc30 | 46 | if (file) { |
1da177e4 | 47 | cf = file->private_data; |
4523cc30 | 48 | if (cf == NULL) { |
6dc0f87e | 49 | cFYI(1, ("empty cifs private file data")); |
1da177e4 LT |
50 | return; |
51 | } | |
ad7a2926 | 52 | if (cf->invalidHandle) |
6dc0f87e | 53 | cFYI(1, ("invalid handle")); |
ad7a2926 | 54 | if (cf->srch_inf.endOfSearch) |
6dc0f87e | 55 | cFYI(1, ("end of search")); |
ad7a2926 | 56 | if (cf->srch_inf.emptyDir) |
6dc0f87e | 57 | cFYI(1, ("empty dir")); |
1da177e4 | 58 | } |
3979877e | 59 | } |
90c81e0b SF |
60 | #else |
61 | static inline void dump_cifs_file_struct(struct file *file, char *label) | |
62 | { | |
63 | } | |
3979877e | 64 | #endif /* DEBUG2 */ |
1da177e4 | 65 | |
cc0bad75 JL |
66 | /* |
67 | * Find the dentry that matches "name". If there isn't one, create one. If it's | |
68 | * a negative dentry or the uniqueid changed, then drop it and recreate it. | |
69 | */ | |
70 | static struct dentry * | |
71 | cifs_readdir_lookup(struct dentry *parent, struct qstr *name, | |
72 | struct cifs_fattr *fattr) | |
73 | { | |
74 | struct dentry *dentry, *alias; | |
75 | struct inode *inode; | |
76 | struct super_block *sb = parent->d_inode->i_sb; | |
77 | ||
78 | cFYI(1, ("For %s", name->name)); | |
79 | ||
80 | dentry = d_lookup(parent, name); | |
81 | if (dentry) { | |
82 | /* FIXME: check for inode number changes? */ | |
83 | if (dentry->d_inode != NULL) | |
84 | return dentry; | |
85 | d_drop(dentry); | |
86 | dput(dentry); | |
87 | } | |
88 | ||
89 | dentry = d_alloc(parent, name); | |
90 | if (dentry == NULL) | |
91 | return NULL; | |
92 | ||
93 | inode = cifs_iget(sb, fattr); | |
94 | if (!inode) { | |
95 | dput(dentry); | |
96 | return NULL; | |
97 | } | |
98 | ||
99 | if (CIFS_SB(sb)->tcon->nocase) | |
100 | dentry->d_op = &cifs_ci_dentry_ops; | |
101 | else | |
102 | dentry->d_op = &cifs_dentry_ops; | |
103 | ||
104 | alias = d_materialise_unique(dentry, inode); | |
105 | if (alias != NULL) { | |
106 | dput(dentry); | |
107 | if (IS_ERR(alias)) | |
108 | return NULL; | |
109 | dentry = alias; | |
110 | } | |
111 | ||
112 | return dentry; | |
113 | } | |
114 | ||
0b8f18e3 JL |
115 | static void |
116 | cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb) | |
1da177e4 | 117 | { |
0b8f18e3 JL |
118 | fattr->cf_uid = cifs_sb->mnt_uid; |
119 | fattr->cf_gid = cifs_sb->mnt_gid; | |
1da177e4 | 120 | |
0b8f18e3 JL |
121 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { |
122 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; | |
123 | fattr->cf_dtype = DT_DIR; | |
1da177e4 | 124 | } else { |
0b8f18e3 JL |
125 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; |
126 | fattr->cf_dtype = DT_REG; | |
1da177e4 LT |
127 | } |
128 | ||
0b8f18e3 JL |
129 | if (fattr->cf_cifsattrs & ATTR_READONLY) |
130 | fattr->cf_mode &= ~S_IWUGO; | |
5bafd765 | 131 | |
0b8f18e3 JL |
132 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL && |
133 | fattr->cf_cifsattrs & ATTR_SYSTEM) { | |
134 | if (fattr->cf_eof == 0) { | |
135 | fattr->cf_mode &= ~S_IFMT; | |
136 | fattr->cf_mode |= S_IFIFO; | |
137 | fattr->cf_dtype = DT_FIFO; | |
3020a1f5 | 138 | } else { |
4468eb3f | 139 | /* |
0b8f18e3 JL |
140 | * trying to get the type and mode via SFU can be slow, |
141 | * so just call those regular files for now, and mark | |
142 | * for reval | |
4468eb3f | 143 | */ |
0b8f18e3 | 144 | fattr->cf_flags |= CIFS_FATTR_NEED_REVAL; |
4468eb3f JL |
145 | } |
146 | } | |
0b8f18e3 | 147 | } |
1da177e4 | 148 | |
0b8f18e3 JL |
149 | void |
150 | cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info, | |
151 | struct cifs_sb_info *cifs_sb) | |
152 | { | |
153 | memset(fattr, 0, sizeof(*fattr)); | |
154 | fattr->cf_cifsattrs = le32_to_cpu(info->ExtFileAttributes); | |
155 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
156 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); | |
157 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
158 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); | |
159 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); | |
160 | ||
161 | cifs_fill_common_info(fattr, cifs_sb); | |
162 | } | |
1da177e4 | 163 | |
0b8f18e3 JL |
164 | void |
165 | cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info, | |
166 | struct cifs_sb_info *cifs_sb) | |
167 | { | |
168 | int offset = cifs_sb->tcon->ses->server->timeAdj; | |
1da177e4 | 169 | |
0b8f18e3 JL |
170 | memset(fattr, 0, sizeof(*fattr)); |
171 | fattr->cf_atime = cnvrtDosUnixTm(info->LastAccessDate, | |
172 | info->LastAccessTime, offset); | |
173 | fattr->cf_ctime = cnvrtDosUnixTm(info->LastWriteDate, | |
174 | info->LastWriteTime, offset); | |
175 | fattr->cf_mtime = cnvrtDosUnixTm(info->LastWriteDate, | |
176 | info->LastWriteTime, offset); | |
177 | ||
178 | fattr->cf_cifsattrs = le16_to_cpu(info->Attributes); | |
179 | fattr->cf_bytes = le32_to_cpu(info->AllocationSize); | |
180 | fattr->cf_eof = le32_to_cpu(info->DataSize); | |
181 | ||
182 | cifs_fill_common_info(fattr, cifs_sb); | |
1da177e4 LT |
183 | } |
184 | ||
0e0d2cf3 SF |
185 | /* BB eventually need to add the following helper function to |
186 | resolve NT_STATUS_STOPPED_ON_SYMLINK return code when | |
187 | we try to do FindFirst on (NTFS) directory symlinks */ | |
188 | /* | |
189 | int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb, | |
190 | int xid) | |
191 | { | |
192 | __u16 fid; | |
193 | int len; | |
194 | int oplock = 0; | |
195 | int rc; | |
196 | struct cifsTconInfo *ptcon = cifs_sb->tcon; | |
197 | char *tmpbuffer; | |
198 | ||
199 | rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ, | |
200 | OPEN_REPARSE_POINT, &fid, &oplock, NULL, | |
201 | cifs_sb->local_nls, | |
202 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
203 | if (!rc) { | |
204 | tmpbuffer = kmalloc(maxpath); | |
205 | rc = CIFSSMBQueryReparseLinkInfo(xid, ptcon, full_path, | |
206 | tmpbuffer, | |
207 | maxpath -1, | |
208 | fid, | |
209 | cifs_sb->local_nls); | |
210 | if (CIFSSMBClose(xid, ptcon, fid)) { | |
211 | cFYI(1, ("Error closing temporary reparsepoint open)")); | |
212 | } | |
213 | } | |
214 | } | |
215 | */ | |
216 | ||
1da177e4 LT |
217 | static int initiate_cifs_search(const int xid, struct file *file) |
218 | { | |
219 | int rc = 0; | |
3870253e SF |
220 | char *full_path; |
221 | struct cifsFileInfo *cifsFile; | |
1da177e4 LT |
222 | struct cifs_sb_info *cifs_sb; |
223 | struct cifsTconInfo *pTcon; | |
224 | ||
4523cc30 | 225 | if (file->private_data == NULL) { |
3870253e SF |
226 | file->private_data = |
227 | kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL); | |
1da177e4 LT |
228 | } |
229 | ||
4523cc30 | 230 | if (file->private_data == NULL) |
1da177e4 | 231 | return -ENOMEM; |
1da177e4 | 232 | cifsFile = file->private_data; |
4b18f2a9 SF |
233 | cifsFile->invalidHandle = true; |
234 | cifsFile->srch_inf.endOfSearch = false; | |
1da177e4 | 235 | |
e6a00296 | 236 | cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); |
4523cc30 | 237 | if (cifs_sb == NULL) |
1da177e4 LT |
238 | return -EINVAL; |
239 | ||
240 | pTcon = cifs_sb->tcon; | |
4523cc30 | 241 | if (pTcon == NULL) |
1da177e4 LT |
242 | return -EINVAL; |
243 | ||
e6a00296 | 244 | full_path = build_path_from_dentry(file->f_path.dentry); |
1da177e4 | 245 | |
ad7a2926 | 246 | if (full_path == NULL) |
1da177e4 | 247 | return -ENOMEM; |
1da177e4 | 248 | |
966ca923 | 249 | cFYI(1, ("Full path: %s start at: %lld", full_path, file->f_pos)); |
1da177e4 | 250 | |
75cf6bdc | 251 | ffirst_retry: |
1da177e4 | 252 | /* test for Unix extensions */ |
c18c842b SF |
253 | /* but now check for them on the share/mount not on the SMB session */ |
254 | /* if (pTcon->ses->capabilities & CAP_UNIX) { */ | |
ad7a2926 | 255 | if (pTcon->unix_ext) |
5bafd765 | 256 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX; |
ad7a2926 | 257 | else if ((pTcon->ses->capabilities & |
5bafd765 SF |
258 | (CAP_NT_SMBS | CAP_NT_FIND)) == 0) { |
259 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_INFO_STANDARD; | |
1da177e4 LT |
260 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
261 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO; | |
262 | } else /* not srvinos - BB fixme add check for backlevel? */ { | |
263 | cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO; | |
264 | } | |
265 | ||
3870253e | 266 | rc = CIFSFindFirst(xid, pTcon, full_path, cifs_sb->local_nls, |
737b758c | 267 | &cifsFile->netfid, &cifsFile->srch_inf, |
3870253e | 268 | cifs_sb->mnt_cifs_flags & |
eafe8701 | 269 | CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb)); |
4523cc30 | 270 | if (rc == 0) |
4b18f2a9 | 271 | cifsFile->invalidHandle = false; |
e836f015 | 272 | /* BB add following call to handle readdir on new NTFS symlink errors |
0e0d2cf3 SF |
273 | else if STATUS_STOPPED_ON_SYMLINK |
274 | call get_symlink_reparse_path and retry with new path */ | |
275 | else if ((rc == -EOPNOTSUPP) && | |
75cf6bdc SF |
276 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) { |
277 | cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM; | |
278 | goto ffirst_retry; | |
279 | } | |
1da177e4 LT |
280 | kfree(full_path); |
281 | return rc; | |
282 | } | |
283 | ||
284 | /* return length of unicode string in bytes */ | |
285 | static int cifs_unicode_bytelen(char *str) | |
286 | { | |
287 | int len; | |
63d2583f | 288 | __le16 *ustr = (__le16 *)str; |
1da177e4 | 289 | |
3870253e | 290 | for (len = 0; len <= PATH_MAX; len++) { |
4523cc30 | 291 | if (ustr[len] == 0) |
1da177e4 LT |
292 | return len << 1; |
293 | } | |
790fe579 | 294 | cFYI(1, ("Unicode string longer than PATH_MAX found")); |
1da177e4 LT |
295 | return len << 1; |
296 | } | |
297 | ||
5bafd765 | 298 | static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level) |
1da177e4 | 299 | { |
3870253e | 300 | char *new_entry; |
ad7a2926 | 301 | FILE_DIRECTORY_INFO *pDirInfo = (FILE_DIRECTORY_INFO *)old_entry; |
1da177e4 | 302 | |
4523cc30 | 303 | if (level == SMB_FIND_FILE_INFO_STANDARD) { |
ad7a2926 | 304 | FIND_FILE_STANDARD_INFO *pfData; |
5bafd765 SF |
305 | pfData = (FIND_FILE_STANDARD_INFO *)pDirInfo; |
306 | ||
307 | new_entry = old_entry + sizeof(FIND_FILE_STANDARD_INFO) + | |
308 | pfData->FileNameLength; | |
309 | } else | |
310 | new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset); | |
790fe579 | 311 | cFYI(1, ("new entry %p old entry %p", new_entry, old_entry)); |
1da177e4 | 312 | /* validate that new_entry is not past end of SMB */ |
4523cc30 | 313 | if (new_entry >= end_of_smb) { |
09d1db5c SF |
314 | cERROR(1, |
315 | ("search entry %p began after end of SMB %p old entry %p", | |
3870253e | 316 | new_entry, end_of_smb, old_entry)); |
1da177e4 | 317 | return NULL; |
4523cc30 | 318 | } else if (((level == SMB_FIND_FILE_INFO_STANDARD) && |
3870253e SF |
319 | (new_entry + sizeof(FIND_FILE_STANDARD_INFO) > end_of_smb)) |
320 | || ((level != SMB_FIND_FILE_INFO_STANDARD) && | |
5bafd765 | 321 | (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb))) { |
3870253e | 322 | cERROR(1, ("search entry %p extends after end of SMB %p", |
09d1db5c SF |
323 | new_entry, end_of_smb)); |
324 | return NULL; | |
3870253e | 325 | } else |
1da177e4 LT |
326 | return new_entry; |
327 | ||
328 | } | |
329 | ||
330 | #define UNICODE_DOT cpu_to_le16(0x2e) | |
331 | ||
332 | /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */ | |
333 | static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile) | |
334 | { | |
335 | int rc = 0; | |
3870253e SF |
336 | char *filename = NULL; |
337 | int len = 0; | |
1da177e4 | 338 | |
4523cc30 | 339 | if (cfile->srch_inf.info_level == SMB_FIND_FILE_UNIX) { |
ad7a2926 | 340 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; |
1da177e4 | 341 | filename = &pFindData->FileName[0]; |
4523cc30 | 342 | if (cfile->srch_inf.unicode) { |
1da177e4 LT |
343 | len = cifs_unicode_bytelen(filename); |
344 | } else { | |
345 | /* BB should we make this strnlen of PATH_MAX? */ | |
346 | len = strnlen(filename, 5); | |
347 | } | |
4523cc30 | 348 | } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_DIRECTORY_INFO) { |
ad7a2926 | 349 | FILE_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
350 | (FILE_DIRECTORY_INFO *)current_entry; |
351 | filename = &pFindData->FileName[0]; | |
352 | len = le32_to_cpu(pFindData->FileNameLength); | |
3870253e | 353 | } else if (cfile->srch_inf.info_level == |
5bafd765 | 354 | SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
ad7a2926 | 355 | FILE_FULL_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
356 | (FILE_FULL_DIRECTORY_INFO *)current_entry; |
357 | filename = &pFindData->FileName[0]; | |
358 | len = le32_to_cpu(pFindData->FileNameLength); | |
4523cc30 | 359 | } else if (cfile->srch_inf.info_level == |
5bafd765 | 360 | SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
ad7a2926 | 361 | SEARCH_ID_FULL_DIR_INFO *pFindData = |
1da177e4 LT |
362 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
363 | filename = &pFindData->FileName[0]; | |
364 | len = le32_to_cpu(pFindData->FileNameLength); | |
3870253e | 365 | } else if (cfile->srch_inf.info_level == |
5bafd765 | 366 | SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
ad7a2926 | 367 | FILE_BOTH_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
368 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
369 | filename = &pFindData->FileName[0]; | |
370 | len = le32_to_cpu(pFindData->FileNameLength); | |
4523cc30 | 371 | } else if (cfile->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) { |
ad7a2926 | 372 | FIND_FILE_STANDARD_INFO *pFindData = |
5bafd765 SF |
373 | (FIND_FILE_STANDARD_INFO *)current_entry; |
374 | filename = &pFindData->FileName[0]; | |
5ddaa683 | 375 | len = pFindData->FileNameLength; |
1da177e4 | 376 | } else { |
790fe579 SF |
377 | cFYI(1, ("Unknown findfirst level %d", |
378 | cfile->srch_inf.info_level)); | |
1da177e4 LT |
379 | } |
380 | ||
4523cc30 SF |
381 | if (filename) { |
382 | if (cfile->srch_inf.unicode) { | |
1da177e4 | 383 | __le16 *ufilename = (__le16 *)filename; |
4523cc30 | 384 | if (len == 2) { |
1da177e4 | 385 | /* check for . */ |
4523cc30 | 386 | if (ufilename[0] == UNICODE_DOT) |
1da177e4 | 387 | rc = 1; |
4523cc30 | 388 | } else if (len == 4) { |
1da177e4 | 389 | /* check for .. */ |
4523cc30 | 390 | if ((ufilename[0] == UNICODE_DOT) |
3870253e | 391 | && (ufilename[1] == UNICODE_DOT)) |
1da177e4 LT |
392 | rc = 2; |
393 | } | |
394 | } else /* ASCII */ { | |
4523cc30 | 395 | if (len == 1) { |
3870253e | 396 | if (filename[0] == '.') |
1da177e4 | 397 | rc = 1; |
4523cc30 | 398 | } else if (len == 2) { |
790fe579 | 399 | if ((filename[0] == '.') && (filename[1] == '.')) |
1da177e4 LT |
400 | rc = 2; |
401 | } | |
402 | } | |
403 | } | |
404 | ||
405 | return rc; | |
406 | } | |
407 | ||
eafe8701 SF |
408 | /* Check if directory that we are searching has changed so we can decide |
409 | whether we can use the cached search results from the previous search */ | |
3870253e | 410 | static int is_dir_changed(struct file *file) |
eafe8701 | 411 | { |
c33f8d32 CH |
412 | struct inode *inode = file->f_path.dentry->d_inode; |
413 | struct cifsInodeInfo *cifsInfo = CIFS_I(inode); | |
eafe8701 | 414 | |
c33f8d32 | 415 | if (cifsInfo->time == 0) |
eafe8701 SF |
416 | return 1; /* directory was changed, perhaps due to unlink */ |
417 | else | |
418 | return 0; | |
419 | ||
420 | } | |
421 | ||
0752f152 SF |
422 | static int cifs_save_resume_key(const char *current_entry, |
423 | struct cifsFileInfo *cifsFile) | |
424 | { | |
425 | int rc = 0; | |
426 | unsigned int len = 0; | |
427 | __u16 level; | |
428 | char *filename; | |
429 | ||
430 | if ((cifsFile == NULL) || (current_entry == NULL)) | |
431 | return -EINVAL; | |
432 | ||
433 | level = cifsFile->srch_inf.info_level; | |
434 | ||
435 | if (level == SMB_FIND_FILE_UNIX) { | |
436 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; | |
437 | ||
438 | filename = &pFindData->FileName[0]; | |
439 | if (cifsFile->srch_inf.unicode) { | |
440 | len = cifs_unicode_bytelen(filename); | |
441 | } else { | |
442 | /* BB should we make this strnlen of PATH_MAX? */ | |
443 | len = strnlen(filename, PATH_MAX); | |
444 | } | |
445 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | |
446 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { | |
447 | FILE_DIRECTORY_INFO *pFindData = | |
448 | (FILE_DIRECTORY_INFO *)current_entry; | |
449 | filename = &pFindData->FileName[0]; | |
450 | len = le32_to_cpu(pFindData->FileNameLength); | |
451 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | |
452 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { | |
453 | FILE_FULL_DIRECTORY_INFO *pFindData = | |
454 | (FILE_FULL_DIRECTORY_INFO *)current_entry; | |
455 | filename = &pFindData->FileName[0]; | |
456 | len = le32_to_cpu(pFindData->FileNameLength); | |
457 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | |
458 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { | |
459 | SEARCH_ID_FULL_DIR_INFO *pFindData = | |
460 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; | |
461 | filename = &pFindData->FileName[0]; | |
462 | len = le32_to_cpu(pFindData->FileNameLength); | |
463 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | |
464 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { | |
465 | FILE_BOTH_DIRECTORY_INFO *pFindData = | |
466 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; | |
467 | filename = &pFindData->FileName[0]; | |
468 | len = le32_to_cpu(pFindData->FileNameLength); | |
469 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | |
470 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { | |
471 | FIND_FILE_STANDARD_INFO *pFindData = | |
472 | (FIND_FILE_STANDARD_INFO *)current_entry; | |
473 | filename = &pFindData->FileName[0]; | |
474 | /* one byte length, no name conversion */ | |
475 | len = (unsigned int)pFindData->FileNameLength; | |
476 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | |
477 | } else { | |
478 | cFYI(1, ("Unknown findfirst level %d", level)); | |
479 | return -EINVAL; | |
480 | } | |
481 | cifsFile->srch_inf.resume_name_len = len; | |
482 | cifsFile->srch_inf.presume_name = filename; | |
483 | return rc; | |
484 | } | |
485 | ||
1da177e4 LT |
486 | /* find the corresponding entry in the search */ |
487 | /* Note that the SMB server returns search entries for . and .. which | |
488 | complicates logic here if we choose to parse for them and we do not | |
489 | assume that they are located in the findfirst return buffer.*/ | |
490 | /* We start counting in the buffer with entry 2 and increment for every | |
491 | entry (do not increment for . or .. entry) */ | |
492 | static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon, | |
3870253e | 493 | struct file *file, char **ppCurrentEntry, int *num_to_ret) |
1da177e4 LT |
494 | { |
495 | int rc = 0; | |
496 | int pos_in_buf = 0; | |
497 | loff_t first_entry_in_buffer; | |
498 | loff_t index_to_find = file->f_pos; | |
3870253e | 499 | struct cifsFileInfo *cifsFile = file->private_data; |
1da177e4 | 500 | /* check if index in the buffer */ |
50c2f753 | 501 | |
3870253e | 502 | if ((cifsFile == NULL) || (ppCurrentEntry == NULL) || |
eafe8701 | 503 | (num_to_ret == NULL)) |
1da177e4 | 504 | return -ENOENT; |
50c2f753 | 505 | |
1da177e4 | 506 | *ppCurrentEntry = NULL; |
3870253e SF |
507 | first_entry_in_buffer = |
508 | cifsFile->srch_inf.index_of_last_entry - | |
1da177e4 | 509 | cifsFile->srch_inf.entries_in_buffer; |
60808233 SF |
510 | |
511 | /* if first entry in buf is zero then is first buffer | |
512 | in search response data which means it is likely . and .. | |
513 | will be in this buffer, although some servers do not return | |
514 | . and .. for the root of a drive and for those we need | |
515 | to start two entries earlier */ | |
516 | ||
3979877e | 517 | dump_cifs_file_struct(file, "In fce "); |
3870253e SF |
518 | if (((index_to_find < cifsFile->srch_inf.index_of_last_entry) && |
519 | is_dir_changed(file)) || | |
eafe8701 | 520 | (index_to_find < first_entry_in_buffer)) { |
1da177e4 | 521 | /* close and restart search */ |
790fe579 | 522 | cFYI(1, ("search backing up - close and restart search")); |
ddb4cbfc | 523 | write_lock(&GlobalSMBSeslock); |
77c57ec8 SF |
524 | if (!cifsFile->srch_inf.endOfSearch && |
525 | !cifsFile->invalidHandle) { | |
526 | cifsFile->invalidHandle = true; | |
ddb4cbfc | 527 | write_unlock(&GlobalSMBSeslock); |
77c57ec8 | 528 | CIFSFindClose(xid, pTcon, cifsFile->netfid); |
ddb4cbfc SF |
529 | } else |
530 | write_unlock(&GlobalSMBSeslock); | |
4523cc30 | 531 | if (cifsFile->srch_inf.ntwrk_buf_start) { |
790fe579 | 532 | cFYI(1, ("freeing SMB ff cache buf on search rewind")); |
4523cc30 | 533 | if (cifsFile->srch_inf.smallBuf) |
d47d7c1a SF |
534 | cifs_small_buf_release(cifsFile->srch_inf. |
535 | ntwrk_buf_start); | |
536 | else | |
537 | cifs_buf_release(cifsFile->srch_inf. | |
538 | ntwrk_buf_start); | |
76c510ad | 539 | cifsFile->srch_inf.ntwrk_buf_start = NULL; |
1da177e4 | 540 | } |
3870253e | 541 | rc = initiate_cifs_search(xid, file); |
4523cc30 | 542 | if (rc) { |
790fe579 SF |
543 | cFYI(1, ("error %d reinitiating a search on rewind", |
544 | rc)); | |
1da177e4 LT |
545 | return rc; |
546 | } | |
a364bc0b | 547 | cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile); |
1da177e4 LT |
548 | } |
549 | ||
3870253e | 550 | while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) && |
4b18f2a9 | 551 | (rc == 0) && !cifsFile->srch_inf.endOfSearch) { |
790fe579 | 552 | cFYI(1, ("calling findnext2")); |
3870253e | 553 | rc = CIFSFindNext(xid, pTcon, cifsFile->netfid, |
dfb7533b | 554 | &cifsFile->srch_inf); |
a364bc0b | 555 | cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile); |
4523cc30 | 556 | if (rc) |
1da177e4 LT |
557 | return -ENOENT; |
558 | } | |
4523cc30 | 559 | if (index_to_find < cifsFile->srch_inf.index_of_last_entry) { |
1da177e4 LT |
560 | /* we found the buffer that contains the entry */ |
561 | /* scan and find it */ | |
562 | int i; | |
3870253e SF |
563 | char *current_entry; |
564 | char *end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + | |
1da177e4 LT |
565 | smbCalcSize((struct smb_hdr *) |
566 | cifsFile->srch_inf.ntwrk_buf_start); | |
60808233 SF |
567 | |
568 | current_entry = cifsFile->srch_inf.srch_entries_start; | |
1da177e4 LT |
569 | first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry |
570 | - cifsFile->srch_inf.entries_in_buffer; | |
571 | pos_in_buf = index_to_find - first_entry_in_buffer; | |
790fe579 | 572 | cFYI(1, ("found entry - pos_in_buf %d", pos_in_buf)); |
5bafd765 | 573 | |
ad7a2926 | 574 | for (i = 0; (i < (pos_in_buf)) && (current_entry != NULL); i++) { |
dfb7533b | 575 | /* go entry by entry figuring out which is first */ |
3870253e | 576 | current_entry = nxt_dir_entry(current_entry, end_of_smb, |
5bafd765 | 577 | cifsFile->srch_inf.info_level); |
1da177e4 | 578 | } |
790fe579 | 579 | if ((current_entry == NULL) && (i < pos_in_buf)) { |
1da177e4 | 580 | /* BB fixme - check if we should flag this error */ |
3870253e | 581 | cERROR(1, ("reached end of buf searching for pos in buf" |
1da177e4 | 582 | " %d index to find %lld rc %d", |
3870253e | 583 | pos_in_buf, index_to_find, rc)); |
1da177e4 LT |
584 | } |
585 | rc = 0; | |
586 | *ppCurrentEntry = current_entry; | |
587 | } else { | |
790fe579 | 588 | cFYI(1, ("index not in buffer - could not findnext into it")); |
1da177e4 LT |
589 | return 0; |
590 | } | |
591 | ||
790fe579 SF |
592 | if (pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) { |
593 | cFYI(1, ("can not return entries pos_in_buf beyond last")); | |
1da177e4 LT |
594 | *num_to_ret = 0; |
595 | } else | |
596 | *num_to_ret = cifsFile->srch_inf.entries_in_buffer - pos_in_buf; | |
1da177e4 LT |
597 | |
598 | return rc; | |
599 | } | |
600 | ||
601 | /* inode num, inode type and filename returned */ | |
602 | static int cifs_get_name_from_search_buf(struct qstr *pqst, | |
603 | char *current_entry, __u16 level, unsigned int unicode, | |
18295796 | 604 | struct cifs_sb_info *cifs_sb, unsigned int max_len, __u64 *pinum) |
1da177e4 LT |
605 | { |
606 | int rc = 0; | |
607 | unsigned int len = 0; | |
3870253e SF |
608 | char *filename; |
609 | struct nls_table *nlt = cifs_sb->local_nls; | |
1da177e4 LT |
610 | |
611 | *pinum = 0; | |
612 | ||
790fe579 | 613 | if (level == SMB_FIND_FILE_UNIX) { |
3870253e | 614 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; |
1da177e4 LT |
615 | |
616 | filename = &pFindData->FileName[0]; | |
790fe579 | 617 | if (unicode) { |
1da177e4 LT |
618 | len = cifs_unicode_bytelen(filename); |
619 | } else { | |
620 | /* BB should we make this strnlen of PATH_MAX? */ | |
621 | len = strnlen(filename, PATH_MAX); | |
622 | } | |
623 | ||
cc0bad75 | 624 | *pinum = le64_to_cpu(pFindData->basic.UniqueId); |
790fe579 | 625 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { |
3870253e | 626 | FILE_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
627 | (FILE_DIRECTORY_INFO *)current_entry; |
628 | filename = &pFindData->FileName[0]; | |
629 | len = le32_to_cpu(pFindData->FileNameLength); | |
790fe579 | 630 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { |
3870253e | 631 | FILE_FULL_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
632 | (FILE_FULL_DIRECTORY_INFO *)current_entry; |
633 | filename = &pFindData->FileName[0]; | |
634 | len = le32_to_cpu(pFindData->FileNameLength); | |
790fe579 | 635 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { |
3870253e | 636 | SEARCH_ID_FULL_DIR_INFO *pFindData = |
1da177e4 LT |
637 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; |
638 | filename = &pFindData->FileName[0]; | |
639 | len = le32_to_cpu(pFindData->FileNameLength); | |
85a6dac5 | 640 | *pinum = le64_to_cpu(pFindData->UniqueId); |
790fe579 | 641 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { |
3870253e | 642 | FILE_BOTH_DIRECTORY_INFO *pFindData = |
1da177e4 LT |
643 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; |
644 | filename = &pFindData->FileName[0]; | |
645 | len = le32_to_cpu(pFindData->FileNameLength); | |
790fe579 | 646 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { |
ad7a2926 | 647 | FIND_FILE_STANDARD_INFO *pFindData = |
5bafd765 SF |
648 | (FIND_FILE_STANDARD_INFO *)current_entry; |
649 | filename = &pFindData->FileName[0]; | |
650 | /* one byte length, no name conversion */ | |
651 | len = (unsigned int)pFindData->FileNameLength; | |
1da177e4 | 652 | } else { |
790fe579 | 653 | cFYI(1, ("Unknown findfirst level %d", level)); |
1da177e4 LT |
654 | return -EINVAL; |
655 | } | |
5bafd765 | 656 | |
790fe579 | 657 | if (len > max_len) { |
3870253e | 658 | cERROR(1, ("bad search response length %d past smb end", len)); |
5bafd765 SF |
659 | return -EINVAL; |
660 | } | |
661 | ||
790fe579 | 662 | if (unicode) { |
f5884166 JL |
663 | pqst->len = cifs_from_ucs2((char *) pqst->name, |
664 | (__le16 *) filename, | |
18295796 JL |
665 | UNICODE_NAME_MAX, |
666 | min(len, max_len), nlt, | |
f5884166 JL |
667 | cifs_sb->mnt_cifs_flags & |
668 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
669 | } else { |
670 | pqst->name = filename; | |
671 | pqst->len = len; | |
672 | } | |
3870253e | 673 | pqst->hash = full_name_hash(pqst->name, pqst->len); |
790fe579 | 674 | /* cFYI(1, ("filldir on %s",pqst->name)); */ |
1da177e4 LT |
675 | return rc; |
676 | } | |
677 | ||
18295796 JL |
678 | static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir, |
679 | void *direntry, char *scratch_buf, unsigned int max_len) | |
1da177e4 LT |
680 | { |
681 | int rc = 0; | |
682 | struct qstr qstring; | |
3870253e | 683 | struct cifsFileInfo *pCifsF; |
0b8f18e3 | 684 | u64 inum; |
cc0bad75 | 685 | ino_t ino; |
0b8f18e3 | 686 | struct super_block *sb; |
3870253e | 687 | struct cifs_sb_info *cifs_sb; |
1da177e4 | 688 | struct dentry *tmp_dentry; |
cc0bad75 | 689 | struct cifs_fattr fattr; |
1da177e4 LT |
690 | |
691 | /* get filename and len into qstring */ | |
692 | /* get dentry */ | |
693 | /* decide whether to create and populate ionde */ | |
790fe579 | 694 | if ((direntry == NULL) || (file == NULL)) |
1da177e4 LT |
695 | return -EINVAL; |
696 | ||
697 | pCifsF = file->private_data; | |
50c2f753 | 698 | |
790fe579 | 699 | if ((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL)) |
1da177e4 LT |
700 | return -ENOENT; |
701 | ||
3870253e | 702 | rc = cifs_entry_is_dot(pfindEntry, pCifsF); |
60808233 | 703 | /* skip . and .. since we added them first */ |
790fe579 | 704 | if (rc != 0) |
60808233 SF |
705 | return 0; |
706 | ||
0b8f18e3 JL |
707 | sb = file->f_path.dentry->d_sb; |
708 | cifs_sb = CIFS_SB(sb); | |
1da177e4 LT |
709 | |
710 | qstring.name = scratch_buf; | |
3870253e | 711 | rc = cifs_get_name_from_search_buf(&qstring, pfindEntry, |
1da177e4 | 712 | pCifsF->srch_inf.info_level, |
3870253e | 713 | pCifsF->srch_inf.unicode, cifs_sb, |
0b8f18e3 | 714 | max_len, &inum /* returned */); |
1da177e4 | 715 | |
790fe579 | 716 | if (rc) |
1da177e4 LT |
717 | return rc; |
718 | ||
0b8f18e3 | 719 | if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) |
cc0bad75 JL |
720 | cifs_unix_basic_to_fattr(&fattr, |
721 | &((FILE_UNIX_INFO *) pfindEntry)->basic, | |
722 | cifs_sb); | |
0b8f18e3 JL |
723 | else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) |
724 | cifs_std_info_to_fattr(&fattr, (FIND_FILE_STANDARD_INFO *) | |
725 | pfindEntry, cifs_sb); | |
726 | else | |
727 | cifs_dir_info_to_fattr(&fattr, (FILE_DIRECTORY_INFO *) | |
728 | pfindEntry, cifs_sb); | |
b835bebe | 729 | |
0b8f18e3 JL |
730 | /* FIXME: make _to_fattr functions fill this out */ |
731 | if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO) | |
732 | fattr.cf_uniqueid = inum; | |
733 | else | |
734 | fattr.cf_uniqueid = iunique(sb, ROOT_I); | |
50c2f753 | 735 | |
0b8f18e3 JL |
736 | ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid); |
737 | tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring, &fattr); | |
3870253e SF |
738 | |
739 | rc = filldir(direntry, qstring.name, qstring.len, file->f_pos, | |
0b8f18e3 JL |
740 | ino, fattr.cf_dtype); |
741 | ||
742 | /* | |
743 | * we can not return filldir errors to the caller since they are | |
744 | * "normal" when the stat blocksize is too small - we return remapped | |
745 | * error instead | |
746 | * | |
747 | * FIXME: This looks bogus. filldir returns -EOVERFLOW in the above | |
748 | * case already. Why should we be clobbering other errors from it? | |
749 | */ | |
790fe579 SF |
750 | if (rc) { |
751 | cFYI(1, ("filldir rc = %d", rc)); | |
7ca85ba7 | 752 | rc = -EOVERFLOW; |
1da177e4 | 753 | } |
1da177e4 LT |
754 | dput(tmp_dentry); |
755 | return rc; | |
756 | } | |
757 | ||
1da177e4 LT |
758 | |
759 | int cifs_readdir(struct file *file, void *direntry, filldir_t filldir) | |
760 | { | |
761 | int rc = 0; | |
3870253e | 762 | int xid, i; |
1da177e4 LT |
763 | struct cifs_sb_info *cifs_sb; |
764 | struct cifsTconInfo *pTcon; | |
765 | struct cifsFileInfo *cifsFile = NULL; | |
3870253e | 766 | char *current_entry; |
1da177e4 | 767 | int num_to_fill = 0; |
3870253e | 768 | char *tmp_buf = NULL; |
50c2f753 | 769 | char *end_of_smb; |
18295796 | 770 | unsigned int max_len; |
1da177e4 LT |
771 | |
772 | xid = GetXid(); | |
773 | ||
e6a00296 | 774 | cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); |
1da177e4 | 775 | pTcon = cifs_sb->tcon; |
790fe579 | 776 | if (pTcon == NULL) |
1da177e4 LT |
777 | return -EINVAL; |
778 | ||
1da177e4 LT |
779 | switch ((int) file->f_pos) { |
780 | case 0: | |
60808233 | 781 | if (filldir(direntry, ".", 1, file->f_pos, |
e6a00296 | 782 | file->f_path.dentry->d_inode->i_ino, DT_DIR) < 0) { |
60808233 | 783 | cERROR(1, ("Filldir for current dir failed")); |
1da177e4 LT |
784 | rc = -ENOMEM; |
785 | break; | |
786 | } | |
60808233 | 787 | file->f_pos++; |
1da177e4 | 788 | case 1: |
60808233 | 789 | if (filldir(direntry, "..", 2, file->f_pos, |
e6a00296 | 790 | file->f_path.dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) { |
26a21b98 | 791 | cERROR(1, ("Filldir for parent dir failed")); |
1da177e4 LT |
792 | rc = -ENOMEM; |
793 | break; | |
794 | } | |
60808233 SF |
795 | file->f_pos++; |
796 | default: | |
3870253e SF |
797 | /* 1) If search is active, |
798 | is in current search buffer? | |
1da177e4 LT |
799 | if it before then restart search |
800 | if after then keep searching till find it */ | |
801 | ||
790fe579 | 802 | if (file->private_data == NULL) { |
3870253e | 803 | rc = initiate_cifs_search(xid, file); |
790fe579 SF |
804 | cFYI(1, ("initiate cifs search rc %d", rc)); |
805 | if (rc) { | |
1da177e4 LT |
806 | FreeXid(xid); |
807 | return rc; | |
808 | } | |
809 | } | |
790fe579 | 810 | if (file->private_data == NULL) { |
1da177e4 LT |
811 | rc = -EINVAL; |
812 | FreeXid(xid); | |
813 | return rc; | |
814 | } | |
815 | cifsFile = file->private_data; | |
816 | if (cifsFile->srch_inf.endOfSearch) { | |
790fe579 | 817 | if (cifsFile->srch_inf.emptyDir) { |
1da177e4 LT |
818 | cFYI(1, ("End of search, empty dir")); |
819 | rc = 0; | |
820 | break; | |
821 | } | |
822 | } /* else { | |
4b18f2a9 | 823 | cifsFile->invalidHandle = true; |
1da177e4 | 824 | CIFSFindClose(xid, pTcon, cifsFile->netfid); |
aaa9bbe0 | 825 | } */ |
1da177e4 | 826 | |
3870253e SF |
827 | rc = find_cifs_entry(xid, pTcon, file, |
828 | ¤t_entry, &num_to_fill); | |
790fe579 SF |
829 | if (rc) { |
830 | cFYI(1, ("fce error %d", rc)); | |
1da177e4 LT |
831 | goto rddir2_exit; |
832 | } else if (current_entry != NULL) { | |
790fe579 | 833 | cFYI(1, ("entry %lld found", file->f_pos)); |
1da177e4 | 834 | } else { |
790fe579 | 835 | cFYI(1, ("could not find entry")); |
1da177e4 LT |
836 | goto rddir2_exit; |
837 | } | |
790fe579 SF |
838 | cFYI(1, ("loop through %d times filling dir for net buf %p", |
839 | num_to_fill, cifsFile->srch_inf.ntwrk_buf_start)); | |
5bafd765 SF |
840 | max_len = smbCalcSize((struct smb_hdr *) |
841 | cifsFile->srch_inf.ntwrk_buf_start); | |
842 | end_of_smb = cifsFile->srch_inf.ntwrk_buf_start + max_len; | |
843 | ||
f5884166 | 844 | tmp_buf = kmalloc(UNICODE_NAME_MAX, GFP_KERNEL); |
790fe579 SF |
845 | for (i = 0; (i < num_to_fill) && (rc == 0); i++) { |
846 | if (current_entry == NULL) { | |
1da177e4 | 847 | /* evaluate whether this case is an error */ |
26f57364 | 848 | cERROR(1, ("past SMB end, num to fill %d i %d", |
1da177e4 LT |
849 | num_to_fill, i)); |
850 | break; | |
851 | } | |
60808233 SF |
852 | /* if buggy server returns . and .. late do |
853 | we want to check for that here? */ | |
5bafd765 SF |
854 | rc = cifs_filldir(current_entry, file, |
855 | filldir, direntry, tmp_buf, max_len); | |
790fe579 | 856 | if (rc == -EOVERFLOW) { |
7ca85ba7 SF |
857 | rc = 0; |
858 | break; | |
859 | } | |
860 | ||
1da177e4 | 861 | file->f_pos++; |
790fe579 | 862 | if (file->f_pos == |
3979877e | 863 | cifsFile->srch_inf.index_of_last_entry) { |
790fe579 SF |
864 | cFYI(1, ("last entry in buf at pos %lld %s", |
865 | file->f_pos, tmp_buf)); | |
866 | cifs_save_resume_key(current_entry, cifsFile); | |
1da177e4 | 867 | break; |
790fe579 SF |
868 | } else |
869 | current_entry = | |
5bafd765 SF |
870 | nxt_dir_entry(current_entry, end_of_smb, |
871 | cifsFile->srch_inf.info_level); | |
1da177e4 LT |
872 | } |
873 | kfree(tmp_buf); | |
874 | break; | |
875 | } /* end switch */ | |
876 | ||
877 | rddir2_exit: | |
1da177e4 LT |
878 | FreeXid(xid); |
879 | return rc; | |
880 | } |