4 * Directory search handling
6 * Copyright (C) International Business Machines Corp., 2004
7 * Author(s): Steve French (sfrench@us.ibm.com)
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.
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.
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
24 #include <linux/stat.h>
25 #include <linux/smp_lock.h>
28 #include "cifsproto.h"
29 #include "cifs_unicode.h"
30 #include "cifs_debug.h"
31 #include "cifs_fs_sb.h"
34 /* BB fixme - add debug wrappers around this function to disable it fixme BB */
35 /* static void dump_cifs_file_struct(struct file *file, char *label)
37 struct cifsFileInfo * cf;
40 cf = file->private_data;
42 cFYI(1,("empty cifs private file data"));
45 if(cf->invalidHandle) {
46 cFYI(1,("invalid handle"));
48 if(cf->srch_inf.endOfSearch) {
49 cFYI(1,("end of search"));
51 if(cf->srch_inf.emptyDir) {
52 cFYI(1,("empty dir"));
58 /* Returns one if new inode created (which therefore needs to be hashed) */
59 /* Might check in the future if inode number changed so we can rehash inode */
60 static int construct_dentry(struct qstr
*qstring
, struct file
*file
,
61 struct inode
**ptmp_inode
, struct dentry
**pnew_dentry
)
63 struct dentry
*tmp_dentry
;
64 struct cifs_sb_info
*cifs_sb
;
65 struct cifsTconInfo
*pTcon
;
68 cFYI(1, ("For %s ", qstring
->name
));
69 cifs_sb
= CIFS_SB(file
->f_dentry
->d_sb
);
70 pTcon
= cifs_sb
->tcon
;
72 qstring
->hash
= full_name_hash(qstring
->name
, qstring
->len
);
73 tmp_dentry
= d_lookup(file
->f_dentry
, qstring
);
75 cFYI(0, (" existing dentry with inode 0x%p", tmp_dentry
->d_inode
));
76 *ptmp_inode
= tmp_dentry
->d_inode
;
77 /* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
78 if(*ptmp_inode
== NULL
) {
79 *ptmp_inode
= new_inode(file
->f_dentry
->d_sb
);
80 if(*ptmp_inode
== NULL
)
83 d_instantiate(tmp_dentry
, *ptmp_inode
);
86 tmp_dentry
= d_alloc(file
->f_dentry
, qstring
);
87 if(tmp_dentry
== NULL
) {
88 cERROR(1,("Failed allocating dentry"));
93 *ptmp_inode
= new_inode(file
->f_dentry
->d_sb
);
94 tmp_dentry
->d_op
= &cifs_dentry_ops
;
95 if(*ptmp_inode
== NULL
)
98 d_instantiate(tmp_dentry
, *ptmp_inode
);
102 tmp_dentry
->d_time
= jiffies
;
103 *pnew_dentry
= tmp_dentry
;
107 static void fill_in_inode(struct inode
*tmp_inode
,
108 FILE_DIRECTORY_INFO
*pfindData
, int *pobject_type
)
110 struct cifsInodeInfo
*cifsInfo
= CIFS_I(tmp_inode
);
111 struct cifs_sb_info
*cifs_sb
= CIFS_SB(tmp_inode
->i_sb
);
112 __u32 attr
= le32_to_cpu(pfindData
->ExtFileAttributes
);
113 __u64 allocation_size
= le64_to_cpu(pfindData
->AllocationSize
);
114 __u64 end_of_file
= le64_to_cpu(pfindData
->EndOfFile
);
116 cifsInfo
->cifsAttrs
= attr
;
117 cifsInfo
->time
= jiffies
;
119 /* Linux can not store file creation time unfortunately so ignore it */
121 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->LastAccessTime
));
123 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->LastWriteTime
));
125 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->ChangeTime
));
126 /* treat dos attribute of read-only as read-only mode bit e.g. 555? */
127 /* 2767 perms - indicate mandatory locking */
128 /* BB fill in uid and gid here? with help from winbind?
129 or retrieve from NTFS stream extended attribute */
130 if (atomic_read(&cifsInfo
->inUse
) == 0) {
131 tmp_inode
->i_uid
= cifs_sb
->mnt_uid
;
132 tmp_inode
->i_gid
= cifs_sb
->mnt_gid
;
133 /* set default mode. will override for dirs below */
134 tmp_inode
->i_mode
= cifs_sb
->mnt_file_mode
;
137 cFYI(0,("CIFS FFIRST: Attributes came in as 0x%x",attr
));
138 if (attr
& ATTR_DIRECTORY
) {
139 *pobject_type
= DT_DIR
;
140 /* override default perms since we do not lock dirs */
141 if(atomic_read(&cifsInfo
->inUse
) == 0) {
142 tmp_inode
->i_mode
= cifs_sb
->mnt_dir_mode
;
144 tmp_inode
->i_mode
|= S_IFDIR
;
145 /* we no longer mark these because we could not follow them */
146 /* } else if (attr & ATTR_REPARSE) {
147 *pobject_type = DT_LNK;
148 tmp_inode->i_mode |= S_IFLNK; */
150 *pobject_type
= DT_REG
;
151 tmp_inode
->i_mode
|= S_IFREG
;
152 if (attr
& ATTR_READONLY
)
153 tmp_inode
->i_mode
&= ~(S_IWUGO
);
154 } /* could add code here - to validate if device or weird share type? */
156 /* can not fill in nlink here as in qpathinfo version and Unx search */
157 if (atomic_read(&cifsInfo
->inUse
) == 0) {
158 atomic_set(&cifsInfo
->inUse
, 1);
161 if (is_size_safe_to_change(cifsInfo
)) {
162 /* can not safely change the file size here if the
163 client is writing to it due to potential races */
164 i_size_write(tmp_inode
, end_of_file
);
166 /* 512 bytes (2**9) is the fake blocksize that must be used */
167 /* for this calculation, even though the reported blocksize is larger */
168 tmp_inode
->i_blocks
= (512 - 1 + allocation_size
) >> 9;
171 if (allocation_size
< end_of_file
)
172 cFYI(1, ("May be sparse file, allocation less than file size"));
174 ("File Size %ld and blocks %ld and blocksize %ld",
175 (unsigned long)tmp_inode
->i_size
, tmp_inode
->i_blocks
,
176 tmp_inode
->i_blksize
));
177 if (S_ISREG(tmp_inode
->i_mode
)) {
178 cFYI(1, (" File inode "));
179 tmp_inode
->i_op
= &cifs_file_inode_ops
;
180 if(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DIRECT_IO
)
181 tmp_inode
->i_fop
= &cifs_file_direct_ops
;
183 tmp_inode
->i_fop
= &cifs_file_ops
;
184 tmp_inode
->i_data
.a_ops
= &cifs_addr_ops
;
185 } else if (S_ISDIR(tmp_inode
->i_mode
)) {
186 cFYI(1, (" Directory inode"));
187 tmp_inode
->i_op
= &cifs_dir_inode_ops
;
188 tmp_inode
->i_fop
= &cifs_dir_ops
;
189 } else if (S_ISLNK(tmp_inode
->i_mode
)) {
190 cFYI(1, (" Symbolic Link inode "));
191 tmp_inode
->i_op
= &cifs_symlink_inode_ops
;
193 cFYI(1, (" Init special inode "));
194 init_special_inode(tmp_inode
, tmp_inode
->i_mode
,
199 static void unix_fill_in_inode(struct inode
*tmp_inode
,
200 FILE_UNIX_INFO
*pfindData
, int *pobject_type
)
202 struct cifsInodeInfo
*cifsInfo
= CIFS_I(tmp_inode
);
203 struct cifs_sb_info
*cifs_sb
= CIFS_SB(tmp_inode
->i_sb
);
205 __u32 type
= le32_to_cpu(pfindData
->Type
);
206 __u64 num_of_bytes
= le64_to_cpu(pfindData
->NumOfBytes
);
207 __u64 end_of_file
= le64_to_cpu(pfindData
->EndOfFile
);
208 cifsInfo
->time
= jiffies
;
209 atomic_inc(&cifsInfo
->inUse
);
212 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->LastAccessTime
));
214 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->LastModificationTime
));
216 cifs_NTtimeToUnix(le64_to_cpu(pfindData
->LastStatusChange
));
218 tmp_inode
->i_mode
= le64_to_cpu(pfindData
->Permissions
);
219 if (type
== UNIX_FILE
) {
220 *pobject_type
= DT_REG
;
221 tmp_inode
->i_mode
|= S_IFREG
;
222 } else if (type
== UNIX_SYMLINK
) {
223 *pobject_type
= DT_LNK
;
224 tmp_inode
->i_mode
|= S_IFLNK
;
225 } else if (type
== UNIX_DIR
) {
226 *pobject_type
= DT_DIR
;
227 tmp_inode
->i_mode
|= S_IFDIR
;
228 } else if (type
== UNIX_CHARDEV
) {
229 *pobject_type
= DT_CHR
;
230 tmp_inode
->i_mode
|= S_IFCHR
;
231 tmp_inode
->i_rdev
= MKDEV(le64_to_cpu(pfindData
->DevMajor
),
232 le64_to_cpu(pfindData
->DevMinor
) & MINORMASK
);
233 } else if (type
== UNIX_BLOCKDEV
) {
234 *pobject_type
= DT_BLK
;
235 tmp_inode
->i_mode
|= S_IFBLK
;
236 tmp_inode
->i_rdev
= MKDEV(le64_to_cpu(pfindData
->DevMajor
),
237 le64_to_cpu(pfindData
->DevMinor
) & MINORMASK
);
238 } else if (type
== UNIX_FIFO
) {
239 *pobject_type
= DT_FIFO
;
240 tmp_inode
->i_mode
|= S_IFIFO
;
241 } else if (type
== UNIX_SOCKET
) {
242 *pobject_type
= DT_SOCK
;
243 tmp_inode
->i_mode
|= S_IFSOCK
;
246 tmp_inode
->i_uid
= le64_to_cpu(pfindData
->Uid
);
247 tmp_inode
->i_gid
= le64_to_cpu(pfindData
->Gid
);
248 tmp_inode
->i_nlink
= le64_to_cpu(pfindData
->Nlinks
);
250 if (is_size_safe_to_change(cifsInfo
)) {
251 /* can not safely change the file size here if the
252 client is writing to it due to potential races */
253 i_size_write(tmp_inode
,end_of_file
);
255 /* 512 bytes (2**9) is the fake blocksize that must be used */
256 /* for this calculation, not the real blocksize */
257 tmp_inode
->i_blocks
= (512 - 1 + num_of_bytes
) >> 9;
260 if (S_ISREG(tmp_inode
->i_mode
)) {
261 cFYI(1, ("File inode"));
262 tmp_inode
->i_op
= &cifs_file_inode_ops
;
263 if(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DIRECT_IO
)
264 tmp_inode
->i_fop
= &cifs_file_direct_ops
;
266 tmp_inode
->i_fop
= &cifs_file_ops
;
267 tmp_inode
->i_data
.a_ops
= &cifs_addr_ops
;
268 } else if (S_ISDIR(tmp_inode
->i_mode
)) {
269 cFYI(1, ("Directory inode"));
270 tmp_inode
->i_op
= &cifs_dir_inode_ops
;
271 tmp_inode
->i_fop
= &cifs_dir_ops
;
272 } else if (S_ISLNK(tmp_inode
->i_mode
)) {
273 cFYI(1, ("Symbolic Link inode"));
274 tmp_inode
->i_op
= &cifs_symlink_inode_ops
;
275 /* tmp_inode->i_fop = *//* do not need to set to anything */
277 cFYI(1, ("Special inode"));
278 init_special_inode(tmp_inode
, tmp_inode
->i_mode
,
283 static int initiate_cifs_search(const int xid
, struct file
*file
)
287 struct cifsFileInfo
* cifsFile
;
288 struct cifs_sb_info
*cifs_sb
;
289 struct cifsTconInfo
*pTcon
;
291 if(file
->private_data
== NULL
) {
293 kmalloc(sizeof(struct cifsFileInfo
),GFP_KERNEL
);
296 if(file
->private_data
== NULL
) {
299 memset(file
->private_data
,0,sizeof(struct cifsFileInfo
));
301 cifsFile
= file
->private_data
;
302 cifsFile
->invalidHandle
= TRUE
;
303 cifsFile
->srch_inf
.endOfSearch
= FALSE
;
305 if(file
->f_dentry
== NULL
)
308 cifs_sb
= CIFS_SB(file
->f_dentry
->d_sb
);
312 pTcon
= cifs_sb
->tcon
;
316 down(&file
->f_dentry
->d_sb
->s_vfs_rename_sem
);
317 full_path
= build_wildcard_path_from_dentry(file
->f_dentry
);
318 up(&file
->f_dentry
->d_sb
->s_vfs_rename_sem
);
320 if(full_path
== NULL
) {
324 cFYI(1, ("Full path: %s start at: %lld ", full_path
, file
->f_pos
));
326 /* test for Unix extensions */
327 if (pTcon
->ses
->capabilities
& CAP_UNIX
) {
328 cifsFile
->srch_inf
.info_level
= SMB_FIND_FILE_UNIX
;
329 } else if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
) {
330 cifsFile
->srch_inf
.info_level
= SMB_FIND_FILE_ID_FULL_DIR_INFO
;
331 } else /* not srvinos - BB fixme add check for backlevel? */ {
332 cifsFile
->srch_inf
.info_level
= SMB_FIND_FILE_DIRECTORY_INFO
;
335 rc
= CIFSFindFirst(xid
, pTcon
,full_path
,cifs_sb
->local_nls
,
336 &cifsFile
->netfid
, &cifsFile
->srch_inf
);
338 cifsFile
->invalidHandle
= FALSE
;
343 /* return length of unicode string in bytes */
344 static int cifs_unicode_bytelen(char *str
)
347 __le16
* ustr
= (__le16
*)str
;
349 for(len
=0;len
<= PATH_MAX
;len
++) {
353 cFYI(1,("Unicode string longer than PATH_MAX found"));
357 static char *nxt_dir_entry(char *old_entry
, char *end_of_smb
)
360 FILE_DIRECTORY_INFO
* pDirInfo
= (FILE_DIRECTORY_INFO
*)old_entry
;
362 new_entry
= old_entry
+ le32_to_cpu(pDirInfo
->NextEntryOffset
);
363 cFYI(1,("new entry %p old entry %p",new_entry
,old_entry
));
364 /* validate that new_entry is not past end of SMB */
365 if(new_entry
>= end_of_smb
) {
366 cFYI(1,("search entry %p began after end of SMB %p old entry %p",
367 new_entry
,end_of_smb
,old_entry
));
374 #define UNICODE_DOT cpu_to_le16(0x2e)
376 /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */
377 static int cifs_entry_is_dot(char *current_entry
, struct cifsFileInfo
*cfile
)
380 char * filename
= NULL
;
383 if(cfile
->srch_inf
.info_level
== 0x202) {
384 FILE_UNIX_INFO
* pFindData
= (FILE_UNIX_INFO
*)current_entry
;
385 filename
= &pFindData
->FileName
[0];
386 if(cfile
->srch_inf
.unicode
) {
387 len
= cifs_unicode_bytelen(filename
);
389 /* BB should we make this strnlen of PATH_MAX? */
390 len
= strnlen(filename
, 5);
392 } else if(cfile
->srch_inf
.info_level
== 0x101) {
393 FILE_DIRECTORY_INFO
* pFindData
=
394 (FILE_DIRECTORY_INFO
*)current_entry
;
395 filename
= &pFindData
->FileName
[0];
396 len
= le32_to_cpu(pFindData
->FileNameLength
);
397 } else if(cfile
->srch_inf
.info_level
== 0x102) {
398 FILE_FULL_DIRECTORY_INFO
* pFindData
=
399 (FILE_FULL_DIRECTORY_INFO
*)current_entry
;
400 filename
= &pFindData
->FileName
[0];
401 len
= le32_to_cpu(pFindData
->FileNameLength
);
402 } else if(cfile
->srch_inf
.info_level
== 0x105) {
403 SEARCH_ID_FULL_DIR_INFO
* pFindData
=
404 (SEARCH_ID_FULL_DIR_INFO
*)current_entry
;
405 filename
= &pFindData
->FileName
[0];
406 len
= le32_to_cpu(pFindData
->FileNameLength
);
407 } else if(cfile
->srch_inf
.info_level
== 0x104) {
408 FILE_BOTH_DIRECTORY_INFO
* pFindData
=
409 (FILE_BOTH_DIRECTORY_INFO
*)current_entry
;
410 filename
= &pFindData
->FileName
[0];
411 len
= le32_to_cpu(pFindData
->FileNameLength
);
413 cFYI(1,("Unknown findfirst level %d",cfile
->srch_inf
.info_level
));
417 if(cfile
->srch_inf
.unicode
) {
418 __le16
*ufilename
= (__le16
*)filename
;
421 if(ufilename
[0] == UNICODE_DOT
)
423 } else if(len
== 4) {
425 if((ufilename
[0] == UNICODE_DOT
)
426 &&(ufilename
[1] == UNICODE_DOT
))
431 if(filename
[0] == '.')
433 } else if(len
== 2) {
434 if((filename
[0] == '.') && (filename
[1] == '.'))
443 /* find the corresponding entry in the search */
444 /* Note that the SMB server returns search entries for . and .. which
445 complicates logic here if we choose to parse for them and we do not
446 assume that they are located in the findfirst return buffer.*/
447 /* We start counting in the buffer with entry 2 and increment for every
448 entry (do not increment for . or .. entry) */
449 static int find_cifs_entry(const int xid
, struct cifsTconInfo
*pTcon
,
450 struct file
*file
, char **ppCurrentEntry
, int *num_to_ret
)
454 loff_t first_entry_in_buffer
;
455 loff_t index_to_find
= file
->f_pos
;
456 struct cifsFileInfo
* cifsFile
= file
->private_data
;
457 /* check if index in the buffer */
459 if((cifsFile
== NULL
) || (ppCurrentEntry
== NULL
) || (num_to_ret
== NULL
))
462 *ppCurrentEntry
= NULL
;
463 first_entry_in_buffer
=
464 cifsFile
->srch_inf
.index_of_last_entry
-
465 cifsFile
->srch_inf
.entries_in_buffer
;
466 /* dump_cifs_file_struct(file, "In fce ");*/
467 if(index_to_find
< first_entry_in_buffer
) {
468 /* close and restart search */
469 cFYI(1,("search backing up - close and restart search"));
470 cifsFile
->invalidHandle
= TRUE
;
471 CIFSFindClose(xid
, pTcon
, cifsFile
->netfid
);
472 kfree(cifsFile
->search_resume_name
);
473 cifsFile
->search_resume_name
= NULL
;
474 if(cifsFile
->srch_inf
.ntwrk_buf_start
) {
475 cFYI(1,("freeing SMB ff cache buf on search rewind"));
476 cifs_buf_release(cifsFile
->srch_inf
.ntwrk_buf_start
);
478 rc
= initiate_cifs_search(xid
,file
);
480 cFYI(1,("error %d reinitiating a search on rewind",rc
));
485 while((index_to_find
>= cifsFile
->srch_inf
.index_of_last_entry
) &&
486 (rc
== 0) && (cifsFile
->srch_inf
.endOfSearch
== FALSE
)){
487 cFYI(1,("calling findnext2"));
488 rc
= CIFSFindNext(xid
,pTcon
,cifsFile
->netfid
, &cifsFile
->srch_inf
);
492 if(index_to_find
< cifsFile
->srch_inf
.index_of_last_entry
) {
493 /* we found the buffer that contains the entry */
494 /* scan and find it */
496 char * current_entry
;
497 char * end_of_smb
= cifsFile
->srch_inf
.ntwrk_buf_start
+
498 smbCalcSize((struct smb_hdr
*)
499 cifsFile
->srch_inf
.ntwrk_buf_start
);
500 /* dump_cifs_file_struct(file,"found entry in fce "); */
501 first_entry_in_buffer
= cifsFile
->srch_inf
.index_of_last_entry
502 - cifsFile
->srch_inf
.entries_in_buffer
;
503 pos_in_buf
= index_to_find
- first_entry_in_buffer
;
504 cFYI(1,("found entry - pos_in_buf %d",pos_in_buf
));
505 current_entry
= cifsFile
->srch_inf
.srch_entries_start
;
506 for(i
=0;(i
<(pos_in_buf
)) && (current_entry
!= NULL
);i
++) {
507 /* go entry to next entry figuring out which we need to start with */
510 rc
= cifs_entry_is_dot(current_entry
,cifsFile
);
511 if(rc
== 1) /* is . or .. so skip */ {
512 cFYI(1,("Entry is .")); /* BB removeme BB */
514 } else if (rc
== 2 ) {
515 cFYI(1,("Entry is ..")); /* BB removeme BB */
518 current_entry
= nxt_dir_entry(current_entry
,end_of_smb
);
520 if((current_entry
== NULL
) && (i
< pos_in_buf
)) {
521 /* BB fixme - check if we should flag this error */
522 cERROR(1,("reached end of buf searching for pos in buf"
523 " %d index to find %lld rc %d",
524 pos_in_buf
,index_to_find
,rc
));
527 *ppCurrentEntry
= current_entry
;
529 cFYI(1,("index not in buffer - could not findnext into it"));
533 if(pos_in_buf
>= cifsFile
->srch_inf
.entries_in_buffer
) {
534 cFYI(1,("can not return entries when pos_in_buf beyond last entry"));
537 *num_to_ret
= cifsFile
->srch_inf
.entries_in_buffer
- pos_in_buf
;
538 /* dump_cifs_file_struct(file, "end fce ");*/
543 /* inode num, inode type and filename returned */
544 static int cifs_get_name_from_search_buf(struct qstr
*pqst
,
545 char *current_entry
, __u16 level
, unsigned int unicode
,
546 struct cifs_sb_info
* cifs_sb
, ino_t
*pinum
)
549 unsigned int len
= 0;
551 struct nls_table
* nlt
= cifs_sb
->local_nls
;
555 if(level
== SMB_FIND_FILE_UNIX
) {
556 FILE_UNIX_INFO
* pFindData
= (FILE_UNIX_INFO
*)current_entry
;
558 filename
= &pFindData
->FileName
[0];
560 len
= cifs_unicode_bytelen(filename
);
562 /* BB should we make this strnlen of PATH_MAX? */
563 len
= strnlen(filename
, PATH_MAX
);
566 /* BB fixme - hash low and high 32 bits if not 64 bit arch BB fixme */
567 if(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
)
568 *pinum
= pFindData
->UniqueId
;
569 } else if(level
== SMB_FIND_FILE_DIRECTORY_INFO
) {
570 FILE_DIRECTORY_INFO
* pFindData
=
571 (FILE_DIRECTORY_INFO
*)current_entry
;
572 filename
= &pFindData
->FileName
[0];
573 len
= le32_to_cpu(pFindData
->FileNameLength
);
574 } else if(level
== SMB_FIND_FILE_FULL_DIRECTORY_INFO
) {
575 FILE_FULL_DIRECTORY_INFO
* pFindData
=
576 (FILE_FULL_DIRECTORY_INFO
*)current_entry
;
577 filename
= &pFindData
->FileName
[0];
578 len
= le32_to_cpu(pFindData
->FileNameLength
);
579 } else if(level
== SMB_FIND_FILE_ID_FULL_DIR_INFO
) {
580 SEARCH_ID_FULL_DIR_INFO
* pFindData
=
581 (SEARCH_ID_FULL_DIR_INFO
*)current_entry
;
582 filename
= &pFindData
->FileName
[0];
583 len
= le32_to_cpu(pFindData
->FileNameLength
);
584 *pinum
= pFindData
->UniqueId
;
585 } else if(level
== SMB_FIND_FILE_BOTH_DIRECTORY_INFO
) {
586 FILE_BOTH_DIRECTORY_INFO
* pFindData
=
587 (FILE_BOTH_DIRECTORY_INFO
*)current_entry
;
588 filename
= &pFindData
->FileName
[0];
589 len
= le32_to_cpu(pFindData
->FileNameLength
);
591 cFYI(1,("Unknown findfirst level %d",level
));
595 /* BB fixme - test with long names */
596 /* Note converted filename can be longer than in unicode */
597 pqst
->len
= cifs_strfromUCS_le((char *)pqst
->name
,(wchar_t *)filename
,len
/2,nlt
);
599 pqst
->name
= filename
;
602 pqst
->hash
= full_name_hash(pqst
->name
,pqst
->len
);
603 /* cFYI(1,("filldir on %s",pqst->name)); */
607 static int cifs_filldir(char *pfindEntry
, struct file
*file
,
608 filldir_t filldir
, void *direntry
, char *scratch_buf
)
612 struct cifsFileInfo
* pCifsF
;
615 struct cifs_sb_info
* cifs_sb
;
616 struct inode
*tmp_inode
;
617 struct dentry
*tmp_dentry
;
619 /* get filename and len into qstring */
621 /* decide whether to create and populate ionde */
622 if((direntry
== NULL
) || (file
== NULL
))
625 pCifsF
= file
->private_data
;
627 if((scratch_buf
== NULL
) || (pfindEntry
== NULL
) || (pCifsF
== NULL
))
630 if(file
->f_dentry
== NULL
)
633 cifs_sb
= CIFS_SB(file
->f_dentry
->d_sb
);
635 qstring
.name
= scratch_buf
;
636 rc
= cifs_get_name_from_search_buf(&qstring
,pfindEntry
,
637 pCifsF
->srch_inf
.info_level
,
638 pCifsF
->srch_inf
.unicode
,cifs_sb
,
639 &inum
/* returned */);
644 rc
= construct_dentry(&qstring
,file
,&tmp_inode
, &tmp_dentry
);
645 if((tmp_inode
== NULL
) || (tmp_dentry
== NULL
))
649 /* inode created, we need to hash it with right inode number */
651 /* BB fixme - hash the 2 32 quantities bits together if necessary BB */
652 tmp_inode
->i_ino
= inum
;
654 insert_inode_hash(tmp_inode
);
657 if(pCifsF
->srch_inf
.info_level
== SMB_FIND_FILE_UNIX
) {
658 unix_fill_in_inode(tmp_inode
,(FILE_UNIX_INFO
*)pfindEntry
,&obj_type
);
660 fill_in_inode(tmp_inode
,(FILE_DIRECTORY_INFO
*)pfindEntry
,&obj_type
);
663 rc
= filldir(direntry
,qstring
.name
,qstring
.len
,file
->f_pos
,tmp_inode
->i_ino
,obj_type
);
665 cFYI(1,("filldir rc = %d",rc
));
672 static int cifs_save_resume_key(const char *current_entry
,
673 struct cifsFileInfo
*cifsFile
)
676 unsigned int len
= 0;
680 if((cifsFile
== NULL
) || (current_entry
== NULL
))
683 level
= cifsFile
->srch_inf
.info_level
;
685 if(level
== SMB_FIND_FILE_UNIX
) {
686 FILE_UNIX_INFO
* pFindData
= (FILE_UNIX_INFO
*)current_entry
;
688 filename
= &pFindData
->FileName
[0];
689 if(cifsFile
->srch_inf
.unicode
) {
690 len
= cifs_unicode_bytelen(filename
);
692 /* BB should we make this strnlen of PATH_MAX? */
693 len
= strnlen(filename
, PATH_MAX
);
695 cifsFile
->srch_inf
.resume_key
= pFindData
->ResumeKey
;
696 } else if(level
== SMB_FIND_FILE_DIRECTORY_INFO
) {
697 FILE_DIRECTORY_INFO
* pFindData
=
698 (FILE_DIRECTORY_INFO
*)current_entry
;
699 filename
= &pFindData
->FileName
[0];
700 len
= le32_to_cpu(pFindData
->FileNameLength
);
701 cifsFile
->srch_inf
.resume_key
= pFindData
->FileIndex
;
702 } else if(level
== SMB_FIND_FILE_FULL_DIRECTORY_INFO
) {
703 FILE_FULL_DIRECTORY_INFO
* pFindData
=
704 (FILE_FULL_DIRECTORY_INFO
*)current_entry
;
705 filename
= &pFindData
->FileName
[0];
706 len
= le32_to_cpu(pFindData
->FileNameLength
);
707 cifsFile
->srch_inf
.resume_key
= pFindData
->FileIndex
;
708 } else if(level
== SMB_FIND_FILE_ID_FULL_DIR_INFO
) {
709 SEARCH_ID_FULL_DIR_INFO
* pFindData
=
710 (SEARCH_ID_FULL_DIR_INFO
*)current_entry
;
711 filename
= &pFindData
->FileName
[0];
712 len
= le32_to_cpu(pFindData
->FileNameLength
);
713 cifsFile
->srch_inf
.resume_key
= pFindData
->FileIndex
;
714 } else if(level
== SMB_FIND_FILE_BOTH_DIRECTORY_INFO
) {
715 FILE_BOTH_DIRECTORY_INFO
* pFindData
=
716 (FILE_BOTH_DIRECTORY_INFO
*)current_entry
;
717 filename
= &pFindData
->FileName
[0];
718 len
= le32_to_cpu(pFindData
->FileNameLength
);
719 cifsFile
->srch_inf
.resume_key
= pFindData
->FileIndex
;
721 cFYI(1,("Unknown findfirst level %d",level
));
724 cifsFile
->srch_inf
.resume_name_len
= len
;
725 cifsFile
->srch_inf
.presume_name
= filename
;
729 int cifs_readdir(struct file
*file
, void *direntry
, filldir_t filldir
)
733 struct cifs_sb_info
*cifs_sb
;
734 struct cifsTconInfo
*pTcon
;
735 struct cifsFileInfo
*cifsFile
= NULL
;
736 char * current_entry
;
738 char * tmp_buf
= NULL
;
743 if(file
->f_dentry
== NULL
) {
747 /* dump_cifs_file_struct(file, "Begin rdir "); */
749 cifs_sb
= CIFS_SB(file
->f_dentry
->d_sb
);
750 pTcon
= cifs_sb
->tcon
;
754 /* cFYI(1,("readdir2 pos: %lld",file->f_pos)); */
756 switch ((int) file
->f_pos
) {
758 /*if (filldir(direntry, ".", 1, file->f_pos,
759 file->f_dentry->d_inode->i_ino, DT_DIR) < 0) {
760 cERROR(1, ("Filldir for current dir failed "));
766 /* if (filldir(direntry, "..", 2, file->f_pos,
767 file->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
768 cERROR(1, ("Filldir for parent dir failed "));
774 /* 1) If search is active,
775 is in current search buffer?
776 if it before then restart search
777 if after then keep searching till find it */
779 if(file
->private_data
== NULL
) {
780 rc
= initiate_cifs_search(xid
,file
);
781 cFYI(1,("initiate cifs search rc %d",rc
));
788 if(file
->private_data
== NULL
) {
793 cifsFile
= file
->private_data
;
794 if (cifsFile
->srch_inf
.endOfSearch
) {
795 if(cifsFile
->srch_inf
.emptyDir
) {
796 cFYI(1, ("End of search, empty dir"));
801 cifsFile->invalidHandle = TRUE;
802 CIFSFindClose(xid, pTcon, cifsFile->netfid);
804 kfree(cifsFile->search_resume_name);
805 cifsFile->search_resume_name = NULL; */
807 /* BB account for . and .. in f_pos as special case */
808 /* dump_cifs_file_struct(file, "rdir after default ");*/
810 rc
= find_cifs_entry(xid
,pTcon
, file
,
811 ¤t_entry
,&num_to_fill
);
813 cFYI(1,("fce error %d",rc
));
815 } else if (current_entry
!= NULL
) {
816 cFYI(1,("entry %lld found",file
->f_pos
));
818 cFYI(1,("could not find entry"));
821 cFYI(1,("loop through %d times filling dir for net buf %p",
822 num_to_fill
,cifsFile
->srch_inf
.ntwrk_buf_start
));
823 end_of_smb
= cifsFile
->srch_inf
.ntwrk_buf_start
+
824 smbCalcSize((struct smb_hdr
*)
825 cifsFile
->srch_inf
.ntwrk_buf_start
);
826 tmp_buf
= kmalloc(NAME_MAX
+1,GFP_KERNEL
);
827 for(i
=0;(i
<num_to_fill
) && (rc
== 0);i
++) {
828 if(current_entry
== NULL
) {
829 /* evaluate whether this case is an error */
830 cERROR(1,("past end of SMB num to fill %d i %d",
835 /* BB FIXME - need to enable the below code BB */
837 /* if((!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) ||
838 (cifsFile->srch_inf.info_level !=
839 something that supports server inodes)) {
842 fill in inode new_inode (getting local i_ino)
844 also create local inode for performance reasons (so we
845 have a cache of inode metadata) unless this new mount
846 parm says otherwise */
848 rc
= cifs_filldir(current_entry
, file
,
849 filldir
, direntry
,tmp_buf
);
851 if(file
->f_pos
== cifsFile
->srch_inf
.index_of_last_entry
) {
852 cFYI(1,("last entry in buf at pos %lld %s",
853 file
->f_pos
,tmp_buf
)); /* BB removeme BB */
854 cifs_save_resume_key(current_entry
,cifsFile
);
857 current_entry
= nxt_dir_entry(current_entry
,end_of_smb
);
864 /* dump_cifs_file_struct(file, "end rdir "); */