4 * Copyright (C) International Business Machines Corp., 2002,2008
5 * Author(s): Steve French (sfrench@us.ibm.com)
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/slab.h>
23 #include <linux/ctype.h>
24 #include <linux/mempool.h>
27 #include "cifsproto.h"
28 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
33 extern mempool_t
*cifs_sm_req_poolp
;
34 extern mempool_t
*cifs_req_poolp
;
35 extern struct task_struct
*oplockThread
;
37 /* The xid serves as a useful identifier for each incoming vfs request,
38 in a similar way to the mid which is useful to track each sent smb,
39 and CurrentXid can also provide a running counter (although it
40 will eventually wrap past zero) of the total vfs operations handled
41 since the cifs fs was mounted */
48 spin_lock(&GlobalMid_Lock
);
49 GlobalTotalActiveXid
++;
51 /* keep high water mark for number of simultaneous ops in filesystem */
52 if (GlobalTotalActiveXid
> GlobalMaxActiveXid
)
53 GlobalMaxActiveXid
= GlobalTotalActiveXid
;
54 if (GlobalTotalActiveXid
> 65000)
55 cFYI(1, ("warning: more than 65000 requests active"));
56 xid
= GlobalCurrentXid
++;
57 spin_unlock(&GlobalMid_Lock
);
62 _FreeXid(unsigned int xid
)
64 spin_lock(&GlobalMid_Lock
);
65 /* if (GlobalTotalActiveXid == 0)
67 GlobalTotalActiveXid
--;
68 spin_unlock(&GlobalMid_Lock
);
74 struct cifsSesInfo
*ret_buf
;
76 ret_buf
= kzalloc(sizeof(struct cifsSesInfo
), GFP_KERNEL
);
78 atomic_inc(&sesInfoAllocCount
);
79 ret_buf
->status
= CifsNew
;
81 INIT_LIST_HEAD(&ret_buf
->smb_ses_list
);
82 INIT_LIST_HEAD(&ret_buf
->tcon_list
);
83 init_MUTEX(&ret_buf
->sesSem
);
89 sesInfoFree(struct cifsSesInfo
*buf_to_free
)
91 if (buf_to_free
== NULL
) {
92 cFYI(1, ("Null buffer passed to sesInfoFree"));
96 atomic_dec(&sesInfoAllocCount
);
97 kfree(buf_to_free
->serverOS
);
98 kfree(buf_to_free
->serverDomain
);
99 kfree(buf_to_free
->serverNOS
);
100 kfree(buf_to_free
->password
);
101 kfree(buf_to_free
->domainName
);
105 struct cifsTconInfo
*
108 struct cifsTconInfo
*ret_buf
;
109 ret_buf
= kzalloc(sizeof(struct cifsTconInfo
), GFP_KERNEL
);
111 atomic_inc(&tconInfoAllocCount
);
112 ret_buf
->tidStatus
= CifsNew
;
114 INIT_LIST_HEAD(&ret_buf
->openFileList
);
115 INIT_LIST_HEAD(&ret_buf
->tcon_list
);
116 #ifdef CONFIG_CIFS_STATS
117 spin_lock_init(&ret_buf
->stat_lock
);
124 tconInfoFree(struct cifsTconInfo
*buf_to_free
)
126 if (buf_to_free
== NULL
) {
127 cFYI(1, ("Null buffer passed to tconInfoFree"));
130 atomic_dec(&tconInfoAllocCount
);
131 kfree(buf_to_free
->nativeFileSystem
);
138 struct smb_hdr
*ret_buf
= NULL
;
140 /* We could use negotiated size instead of max_msgsize -
141 but it may be more efficient to always alloc same size
142 albeit slightly larger than necessary and maxbuffersize
143 defaults to this and can not be bigger */
144 ret_buf
= (struct smb_hdr
*) mempool_alloc(cifs_req_poolp
,
145 GFP_KERNEL
| GFP_NOFS
);
147 /* clear the first few header bytes */
148 /* for most paths, more is cleared in header_assemble */
150 memset(ret_buf
, 0, sizeof(struct smb_hdr
) + 3);
151 atomic_inc(&bufAllocCount
);
152 #ifdef CONFIG_CIFS_STATS2
153 atomic_inc(&totBufAllocCount
);
154 #endif /* CONFIG_CIFS_STATS2 */
161 cifs_buf_release(void *buf_to_free
)
163 if (buf_to_free
== NULL
) {
164 /* cFYI(1, ("Null buffer passed to cifs_buf_release"));*/
167 mempool_free(buf_to_free
, cifs_req_poolp
);
169 atomic_dec(&bufAllocCount
);
174 cifs_small_buf_get(void)
176 struct smb_hdr
*ret_buf
= NULL
;
178 /* We could use negotiated size instead of max_msgsize -
179 but it may be more efficient to always alloc same size
180 albeit slightly larger than necessary and maxbuffersize
181 defaults to this and can not be bigger */
182 ret_buf
= (struct smb_hdr
*) mempool_alloc(cifs_sm_req_poolp
,
183 GFP_KERNEL
| GFP_NOFS
);
185 /* No need to clear memory here, cleared in header assemble */
186 /* memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/
187 atomic_inc(&smBufAllocCount
);
188 #ifdef CONFIG_CIFS_STATS2
189 atomic_inc(&totSmBufAllocCount
);
190 #endif /* CONFIG_CIFS_STATS2 */
197 cifs_small_buf_release(void *buf_to_free
)
200 if (buf_to_free
== NULL
) {
201 cFYI(1, ("Null buffer passed to cifs_small_buf_release"));
204 mempool_free(buf_to_free
, cifs_sm_req_poolp
);
206 atomic_dec(&smBufAllocCount
);
211 Find a free multiplex id (SMB mid). Otherwise there could be
212 mid collisions which might cause problems, demultiplexing the
213 wrong response to this request. Multiplex ids could collide if
214 one of a series requests takes much longer than the others, or
215 if a very large number of long lived requests (byte range
216 locks or FindNotify requests) are pending. No more than
217 64K-1 requests can be outstanding at one time. If no
218 mids are available, return zero. A future optimization
219 could make the combination of mids and uid the key we use
220 to demultiplex on (rather than mid alone).
221 In addition to the above check, the cifs demultiplex
222 code already used the command code as a secondary
223 check of the frame and if signing is negotiated the
224 response would be discarded if the mid were the same
225 but the signature was wrong. Since the mid is not put in the
226 pending queue until later (when it is about to be dispatched)
227 we do have to limit the number of outstanding requests
228 to somewhat less than 64K-1 although it is hard to imagine
229 so many threads being in the vfs at one time.
231 __u16
GetNextMid(struct TCP_Server_Info
*server
)
240 spin_lock(&GlobalMid_Lock
);
241 last_mid
= server
->CurrentMid
; /* we do not want to loop forever */
242 server
->CurrentMid
++;
243 /* This nested loop looks more expensive than it is.
244 In practice the list of pending requests is short,
245 fewer than 50, and the mids are likely to be unique
246 on the first pass through the loop unless some request
247 takes longer than the 64 thousand requests before it
248 (and it would also have to have been a request that
250 while (server
->CurrentMid
!= last_mid
) {
251 struct list_head
*tmp
;
252 struct mid_q_entry
*mid_entry
;
255 if (server
->CurrentMid
== 0)
256 server
->CurrentMid
++;
258 list_for_each(tmp
, &server
->pending_mid_q
) {
259 mid_entry
= list_entry(tmp
, struct mid_q_entry
, qhead
);
261 if ((mid_entry
->mid
== server
->CurrentMid
) &&
262 (mid_entry
->midState
== MID_REQUEST_SUBMITTED
)) {
263 /* This mid is in use, try a different one */
268 if (collision
== 0) {
269 mid
= server
->CurrentMid
;
272 server
->CurrentMid
++;
274 spin_unlock(&GlobalMid_Lock
);
278 /* NB: MID can not be set if treeCon not passed in, in that
279 case it is responsbility of caller to set the mid */
281 header_assemble(struct smb_hdr
*buffer
, char smb_command
/* command */ ,
282 const struct cifsTconInfo
*treeCon
, int word_count
283 /* length of fixed section (word count) in two byte units */)
285 struct list_head
*temp_item
;
286 struct cifsSesInfo
*ses
;
287 char *temp
= (char *) buffer
;
289 memset(temp
, 0, 256); /* bigger than MAX_CIFS_HDR_SIZE */
291 buffer
->smb_buf_length
=
292 (2 * word_count
) + sizeof(struct smb_hdr
) -
293 4 /* RFC 1001 length field does not count */ +
294 2 /* for bcc field itself */ ;
295 /* Note that this is the only network field that has to be converted
296 to big endian and it is done just before we send it */
298 buffer
->Protocol
[0] = 0xFF;
299 buffer
->Protocol
[1] = 'S';
300 buffer
->Protocol
[2] = 'M';
301 buffer
->Protocol
[3] = 'B';
302 buffer
->Command
= smb_command
;
303 buffer
->Flags
= 0x00; /* case sensitive */
304 buffer
->Flags2
= SMBFLG2_KNOWS_LONG_NAMES
;
305 buffer
->Pid
= cpu_to_le16((__u16
)current
->tgid
);
306 buffer
->PidHigh
= cpu_to_le16((__u16
)(current
->tgid
>> 16));
307 spin_lock(&GlobalMid_Lock
);
308 spin_unlock(&GlobalMid_Lock
);
310 buffer
->Tid
= treeCon
->tid
;
312 if (treeCon
->ses
->capabilities
& CAP_UNICODE
)
313 buffer
->Flags2
|= SMBFLG2_UNICODE
;
314 if (treeCon
->ses
->capabilities
& CAP_STATUS32
)
315 buffer
->Flags2
|= SMBFLG2_ERR_STATUS
;
317 /* Uid is not converted */
318 buffer
->Uid
= treeCon
->ses
->Suid
;
319 buffer
->Mid
= GetNextMid(treeCon
->ses
->server
);
320 if (multiuser_mount
!= 0) {
321 /* For the multiuser case, there are few obvious technically */
322 /* possible mechanisms to match the local linux user (uid) */
323 /* to a valid remote smb user (smb_uid): */
324 /* 1) Query Winbind (or other local pam/nss daemon */
325 /* for userid/password/logon_domain or credential */
326 /* 2) Query Winbind for uid to sid to username mapping */
327 /* and see if we have a matching password for existing*/
328 /* session for that user perhas getting password by */
329 /* adding a new pam_cifs module that stores passwords */
330 /* so that the cifs vfs can get at that for all logged*/
332 /* 3) (Which is the mechanism we have chosen) */
333 /* Search through sessions to the same server for a */
334 /* a match on the uid that was passed in on mount */
335 /* with the current processes uid (or euid?) and use */
336 /* that smb uid. If no existing smb session for */
337 /* that uid found, use the default smb session ie */
338 /* the smb session for the volume mounted which is */
339 /* the same as would be used if the multiuser mount */
340 /* flag were disabled. */
342 /* BB Add support for establishing new tCon and SMB Session */
343 /* with userid/password pairs found on the smb session */
344 /* for other target tcp/ip addresses BB */
345 if (current
->fsuid
!= treeCon
->ses
->linux_uid
) {
346 cFYI(1, ("Multiuser mode and UID "
347 "did not match tcon uid"));
348 read_lock(&cifs_tcp_ses_lock
);
349 list_for_each(temp_item
, &treeCon
->ses
->server
->smb_ses_list
) {
350 ses
= list_entry(temp_item
, struct cifsSesInfo
, smb_ses_list
);
351 if (ses
->linux_uid
== current
->fsuid
) {
352 if (ses
->server
== treeCon
->ses
->server
) {
353 cFYI(1, ("found matching uid substitute right smb_uid"));
354 buffer
->Uid
= ses
->Suid
;
357 /* BB eventually call cifs_setup_session here */
358 cFYI(1, ("local UID found but no smb sess with this server exists"));
362 read_unlock(&cifs_tcp_ses_lock
);
366 if (treeCon
->Flags
& SMB_SHARE_IS_IN_DFS
)
367 buffer
->Flags2
|= SMBFLG2_DFS
;
369 buffer
->Flags
|= SMBFLG_CASELESS
;
370 if ((treeCon
->ses
) && (treeCon
->ses
->server
))
371 if (treeCon
->ses
->server
->secMode
&
372 (SECMODE_SIGN_REQUIRED
| SECMODE_SIGN_ENABLED
))
373 buffer
->Flags2
|= SMBFLG2_SECURITY_SIGNATURE
;
376 /* endian conversion of flags is now done just before sending */
377 buffer
->WordCount
= (char) word_count
;
382 checkSMBhdr(struct smb_hdr
*smb
, __u16 mid
)
384 /* Make sure that this really is an SMB, that it is a response,
385 and that the message ids match */
386 if ((*(__le32
*) smb
->Protocol
== cpu_to_le32(0x424d53ff)) &&
388 if (smb
->Flags
& SMBFLG_RESPONSE
)
391 /* only one valid case where server sends us request */
392 if (smb
->Command
== SMB_COM_LOCKING_ANDX
)
395 cERROR(1, ("Received Request not response"));
397 } else { /* bad signature or mid */
398 if (*(__le32
*) smb
->Protocol
!= cpu_to_le32(0x424d53ff))
400 ("Bad protocol string signature header %x",
401 *(unsigned int *) smb
->Protocol
));
403 cERROR(1, ("Mids do not match"));
405 cERROR(1, ("bad smb detected. The Mid=%d", smb
->Mid
));
410 checkSMB(struct smb_hdr
*smb
, __u16 mid
, unsigned int length
)
412 __u32 len
= smb
->smb_buf_length
;
413 __u32 clc_len
; /* calculated length */
414 cFYI(0, ("checkSMB Length: 0x%x, smb_buf_length: 0x%x", length
, len
));
416 if (length
< 2 + sizeof(struct smb_hdr
)) {
417 if ((length
>= sizeof(struct smb_hdr
) - 1)
418 && (smb
->Status
.CifsError
!= 0)) {
420 /* some error cases do not return wct and bcc */
422 } else if ((length
== sizeof(struct smb_hdr
) + 1) &&
423 (smb
->WordCount
== 0)) {
424 char *tmp
= (char *)smb
;
425 /* Need to work around a bug in two servers here */
426 /* First, check if the part of bcc they sent was zero */
427 if (tmp
[sizeof(struct smb_hdr
)] == 0) {
428 /* some servers return only half of bcc
429 * on simple responses (wct, bcc both zero)
430 * in particular have seen this on
431 * ulogoffX and FindClose. This leaves
432 * one byte of bcc potentially unitialized
434 /* zero rest of bcc */
435 tmp
[sizeof(struct smb_hdr
)+1] = 0;
438 cERROR(1, ("rcvd invalid byte count (bcc)"));
440 cERROR(1, ("Length less than smb header size"));
444 if (len
> CIFSMaxBufSize
+ MAX_CIFS_HDR_SIZE
- 4) {
445 cERROR(1, ("smb length greater than MaxBufSize, mid=%d",
450 if (checkSMBhdr(smb
, mid
))
452 clc_len
= smbCalcSize_LE(smb
);
454 if (4 + len
!= length
) {
455 cERROR(1, ("Length read does not match RFC1001 length %d",
460 if (4 + len
!= clc_len
) {
461 /* check if bcc wrapped around for large read responses */
462 if ((len
> 64 * 1024) && (len
> clc_len
)) {
463 /* check if lengths match mod 64K */
464 if (((4 + len
) & 0xFFFF) == (clc_len
& 0xFFFF))
465 return 0; /* bcc wrapped */
467 cFYI(1, ("Calculated size %d vs length %d mismatch for mid %d",
468 clc_len
, 4 + len
, smb
->Mid
));
469 /* Windows XP can return a few bytes too much, presumably
470 an illegal pad, at the end of byte range lock responses
471 so we allow for that three byte pad, as long as actual
472 received length is as long or longer than calculated length */
473 /* We have now had to extend this more, since there is a
474 case in which it needs to be bigger still to handle a
475 malformed response to transact2 findfirst from WinXP when
476 access denied is returned and thus bcc and wct are zero
477 but server says length is 0x21 bytes too long as if the server
478 forget to reset the smb rfc1001 length when it reset the
479 wct and bcc to minimum size and drop the t2 parms and data */
480 if ((4+len
> clc_len
) && (len
<= clc_len
+ 512))
483 cERROR(1, ("RFC1001 size %d bigger than SMB for Mid=%d",
492 is_valid_oplock_break(struct smb_hdr
*buf
, struct TCP_Server_Info
*srv
)
494 struct smb_com_lock_req
*pSMB
= (struct smb_com_lock_req
*)buf
;
495 struct list_head
*tmp
, *tmp1
, *tmp2
;
496 struct cifsSesInfo
*ses
;
497 struct cifsTconInfo
*tcon
;
498 struct cifsInodeInfo
*pCifsInode
;
499 struct cifsFileInfo
*netfile
;
501 cFYI(1, ("Checking for oplock break or dnotify response"));
502 if ((pSMB
->hdr
.Command
== SMB_COM_NT_TRANSACT
) &&
503 (pSMB
->hdr
.Flags
& SMBFLG_RESPONSE
)) {
504 struct smb_com_transaction_change_notify_rsp
*pSMBr
=
505 (struct smb_com_transaction_change_notify_rsp
*)buf
;
506 struct file_notify_information
*pnotify
;
507 __u32 data_offset
= 0;
508 if (pSMBr
->ByteCount
> sizeof(struct file_notify_information
)) {
509 data_offset
= le32_to_cpu(pSMBr
->DataOffset
);
511 pnotify
= (struct file_notify_information
*)
512 ((char *)&pSMBr
->hdr
.Protocol
+ data_offset
);
513 cFYI(1, ("dnotify on %s Action: 0x%x",
514 pnotify
->FileName
, pnotify
->Action
));
515 /* cifs_dump_mem("Rcvd notify Data: ",buf,
516 sizeof(struct smb_hdr)+60); */
519 if (pSMBr
->hdr
.Status
.CifsError
) {
520 cFYI(1, ("notify err 0x%d",
521 pSMBr
->hdr
.Status
.CifsError
));
526 if (pSMB
->hdr
.Command
!= SMB_COM_LOCKING_ANDX
)
528 if (pSMB
->hdr
.Flags
& SMBFLG_RESPONSE
) {
529 /* no sense logging error on invalid handle on oplock
530 break - harmless race between close request and oplock
531 break response is expected from time to time writing out
532 large dirty files cached on the client */
533 if ((NT_STATUS_INVALID_HANDLE
) ==
534 le32_to_cpu(pSMB
->hdr
.Status
.CifsError
)) {
535 cFYI(1, ("invalid handle on oplock break"));
537 } else if (ERRbadfid
==
538 le16_to_cpu(pSMB
->hdr
.Status
.DosError
.Error
)) {
541 return false; /* on valid oplock brk we get "request" */
544 if (pSMB
->hdr
.WordCount
!= 8)
547 cFYI(1, ("oplock type 0x%d level 0x%d",
548 pSMB
->LockType
, pSMB
->OplockLevel
));
549 if (!(pSMB
->LockType
& LOCKING_ANDX_OPLOCK_RELEASE
))
552 /* look up tcon based on tid & uid */
553 read_lock(&cifs_tcp_ses_lock
);
554 list_for_each(tmp
, &srv
->smb_ses_list
) {
555 ses
= list_entry(tmp
, struct cifsSesInfo
, smb_ses_list
);
556 list_for_each(tmp1
, &ses
->tcon_list
) {
557 tcon
= list_entry(tmp1
, struct cifsTconInfo
, tcon_list
);
558 if (tcon
->tid
!= buf
->Tid
)
561 cifs_stats_inc(&tcon
->num_oplock_brks
);
562 list_for_each(tmp2
, &tcon
->openFileList
) {
563 netfile
= list_entry(tmp2
, struct cifsFileInfo
,
565 if (pSMB
->Fid
!= netfile
->netfid
)
568 read_unlock(&cifs_tcp_ses_lock
);
569 cFYI(1, ("file id match, oplock break"));
570 pCifsInode
= CIFS_I(netfile
->pInode
);
571 pCifsInode
->clientCanCacheAll
= false;
572 if (pSMB
->OplockLevel
== 0)
573 pCifsInode
->clientCanCacheRead
= false;
574 pCifsInode
->oplockPending
= true;
575 AllocOplockQEntry(netfile
->pInode
,
576 netfile
->netfid
, tcon
);
577 cFYI(1, ("about to wake up oplock thread"));
579 wake_up_process(oplockThread
);
583 read_unlock(&cifs_tcp_ses_lock
);
584 cFYI(1, ("No matching file for oplock break"));
588 read_unlock(&cifs_tcp_ses_lock
);
589 cFYI(1, ("Can not process oplock break for non-existent connection"));
594 dump_smb(struct smb_hdr
*smb_buf
, int smb_buf_length
)
598 unsigned char *buffer
;
603 buffer
= (unsigned char *) smb_buf
;
604 for (i
= 0, j
= 0; i
< smb_buf_length
; i
++, j
++) {
606 /* have reached the beginning of line */
607 printk(KERN_DEBUG
"| ");
610 printk("%0#4x ", buffer
[i
]);
611 debug_line
[2 * j
] = ' ';
612 if (isprint(buffer
[i
]))
613 debug_line
[1 + (2 * j
)] = buffer
[i
];
615 debug_line
[1 + (2 * j
)] = '_';
618 /* reached end of line, time to print ascii */
620 printk(" | %s\n", debug_line
);
625 debug_line
[2 * j
] = ' ';
626 debug_line
[1 + (2 * j
)] = ' ';
628 printk(" | %s\n", debug_line
);
632 /* Windows maps these to the user defined 16 bit Unicode range since they are
633 reserved symbols (along with \ and /), otherwise illegal to store
634 in filenames in NTFS */
635 #define UNI_ASTERIK (__u16) ('*' + 0xF000)
636 #define UNI_QUESTION (__u16) ('?' + 0xF000)
637 #define UNI_COLON (__u16) (':' + 0xF000)
638 #define UNI_GRTRTHAN (__u16) ('>' + 0xF000)
639 #define UNI_LESSTHAN (__u16) ('<' + 0xF000)
640 #define UNI_PIPE (__u16) ('|' + 0xF000)
641 #define UNI_SLASH (__u16) ('\\' + 0xF000)
643 /* Convert 16 bit Unicode pathname from wire format to string in current code
644 page. Conversion may involve remapping up the seven characters that are
645 only legal in POSIX-like OS (if they are present in the string). Path
646 names are little endian 16 bit Unicode on the wire */
648 cifs_convertUCSpath(char *target
, const __le16
*source
, int maxlen
,
649 const struct nls_table
*cp
)
654 for (i
= 0, j
= 0; i
< maxlen
; i
++) {
655 src_char
= le16_to_cpu(source
[i
]);
658 goto cUCS_out
; /* BB check this BB */
668 /* BB We can not handle remapping slash until
669 all the calls to build_path_from_dentry
670 are modified, as they use slash as separator BB */
684 len
= cp
->uni2char(src_char
, &target
[j
],
685 NLS_MAX_CHARSET_SIZE
);
694 /* make sure we do not overrun callers allocated temp buffer */
696 if (j
>= UNICODE_NAME_MAX
)
704 /* Convert 16 bit Unicode pathname to wire format from string in current code
705 page. Conversion may involve remapping up the seven characters that are
706 only legal in POSIX-like OS (if they are present in the string). Path
707 names are little endian 16 bit Unicode on the wire */
709 cifsConvertToUCS(__le16
*target
, const char *source
, int maxlen
,
710 const struct nls_table
*cp
, int mapChars
)
713 int len_remaining
= maxlen
;
718 return cifs_strtoUCS(target
, source
, PATH_MAX
, cp
);
720 for (i
= 0, j
= 0; i
< maxlen
; j
++) {
721 src_char
= source
[i
];
727 target
[j
] = cpu_to_le16(UNI_COLON
);
730 target
[j
] = cpu_to_le16(UNI_ASTERIK
);
733 target
[j
] = cpu_to_le16(UNI_QUESTION
);
736 target
[j
] = cpu_to_le16(UNI_LESSTHAN
);
739 target
[j
] = cpu_to_le16(UNI_GRTRTHAN
);
742 target
[j
] = cpu_to_le16(UNI_PIPE
);
744 /* BB We can not handle remapping slash until
745 all the calls to build_path_from_dentry
746 are modified, as they use slash as separator BB */
748 target[j] = cpu_to_le16(UNI_SLASH);
751 charlen
= cp
->char2uni(source
+i
,
752 len_remaining
, &temp
);
753 /* if no match, use question mark, which
754 at least in some cases servers as wild card */
756 target
[j
] = cpu_to_le16(0x003f);
759 target
[j
] = cpu_to_le16(temp
);
760 len_remaining
-= charlen
;
761 /* character may take more than one byte in the
762 the source string, but will take exactly two
763 bytes in the target string */
767 i
++; /* move to next char in source string */