4 * Directory search handling
6 * Copyright (C) International Business Machines Corp., 2004, 2005
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);
95 tmp_dentry->d_op = &cifs_ci_dentry_ops;
97 tmp_dentry->d_op = &cifs_dentry_ops;
98 if(*ptmp_inode == NULL)
101 d_instantiate(tmp_dentry, *ptmp_inode);
102 d_rehash(tmp_dentry);
105 tmp_dentry->d_time = jiffies;
106 *pnew_dentry = tmp_dentry;
110 static void fill_in_inode(struct inode *tmp_inode,
111 FILE_DIRECTORY_INFO *pfindData, int *pobject_type, int isNewInode)
114 struct timespec local_mtime;
116 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
117 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
118 __u32 attr = le32_to_cpu(pfindData->ExtFileAttributes);
119 __u64 allocation_size = le64_to_cpu(pfindData->AllocationSize);
120 __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
122 cifsInfo->cifsAttrs = attr;
123 cifsInfo->time = jiffies;
125 /* save mtime and size */
126 local_mtime = tmp_inode->i_mtime;
127 local_size = tmp_inode->i_size;
129 /* Linux can not store file creation time unfortunately so ignore it */
131 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
133 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
135 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
136 /* treat dos attribute of read-only as read-only mode bit e.g. 555? */
137 /* 2767 perms - indicate mandatory locking */
138 /* BB fill in uid and gid here? with help from winbind?
139 or retrieve from NTFS stream extended attribute */
140 if (atomic_read(&cifsInfo->inUse) == 0) {
141 tmp_inode->i_uid = cifs_sb->mnt_uid;
142 tmp_inode->i_gid = cifs_sb->mnt_gid;
143 /* set default mode. will override for dirs below */
144 tmp_inode->i_mode = cifs_sb->mnt_file_mode;
147 if (attr & ATTR_DIRECTORY) {
148 *pobject_type = DT_DIR;
149 /* override default perms since we do not lock dirs */
150 if(atomic_read(&cifsInfo->inUse) == 0) {
151 tmp_inode->i_mode = cifs_sb->mnt_dir_mode;
153 tmp_inode->i_mode |= S_IFDIR;
154 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
155 (attr & ATTR_SYSTEM) && (end_of_file == 0)) {
156 *pobject_type = DT_FIFO;
157 tmp_inode->i_mode |= S_IFIFO;
158 /* BB Finish for SFU style symlinks and devies */
159 /* } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
160 (attr & ATTR_SYSTEM) && ) { */
161 /* we no longer mark these because we could not follow them */
162 /* } else if (attr & ATTR_REPARSE) {
163 *pobject_type = DT_LNK;
164 tmp_inode->i_mode |= S_IFLNK; */
166 *pobject_type = DT_REG;
167 tmp_inode->i_mode |= S_IFREG;
168 if (attr & ATTR_READONLY)
169 tmp_inode->i_mode &= ~(S_IWUGO);
170 } /* could add code here - to validate if device or weird share type? */
172 /* can not fill in nlink here as in qpathinfo version and Unx search */
173 if (atomic_read(&cifsInfo->inUse) == 0) {
174 atomic_set(&cifsInfo->inUse, 1);
177 if (is_size_safe_to_change(cifsInfo)) {
178 /* can not safely change the file size here if the
179 client is writing to it due to potential races */
180 i_size_write(tmp_inode, end_of_file);
182 /* 512 bytes (2**9) is the fake blocksize that must be used */
183 /* for this calculation, even though the reported blocksize is larger */
184 tmp_inode->i_blocks = (512 - 1 + allocation_size) >> 9;
187 if (allocation_size < end_of_file)
188 cFYI(1, ("May be sparse file, allocation less than file size"));
190 ("File Size %ld and blocks %ld and blocksize %ld",
191 (unsigned long)tmp_inode->i_size, tmp_inode->i_blocks,
192 tmp_inode->i_blksize));
193 if (S_ISREG(tmp_inode->i_mode)) {
194 cFYI(1, ("File inode"));
195 tmp_inode->i_op = &cifs_file_inode_ops;
196 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
197 tmp_inode->i_fop = &cifs_file_direct_ops;
199 tmp_inode->i_fop = &cifs_file_ops;
200 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
201 tmp_inode->i_fop->lock = NULL;
202 tmp_inode->i_data.a_ops = &cifs_addr_ops;
205 return; /* No sense invalidating pages for new inode
206 since have not started caching readahead file
209 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
210 (local_size == tmp_inode->i_size)) {
211 cFYI(1, ("inode exists but unchanged"));
213 /* file may have changed on server */
214 cFYI(1, ("invalidate inode, readdir detected change"));
215 invalidate_remote_inode(tmp_inode);
217 } else if (S_ISDIR(tmp_inode->i_mode)) {
218 cFYI(1, ("Directory inode"));
219 tmp_inode->i_op = &cifs_dir_inode_ops;
220 tmp_inode->i_fop = &cifs_dir_ops;
221 } else if (S_ISLNK(tmp_inode->i_mode)) {
222 cFYI(1, ("Symbolic Link inode"));
223 tmp_inode->i_op = &cifs_symlink_inode_ops;
225 cFYI(1, ("Init special inode"));
226 init_special_inode(tmp_inode, tmp_inode->i_mode,
231 static void unix_fill_in_inode(struct inode *tmp_inode,
232 FILE_UNIX_INFO *pfindData, int *pobject_type, int isNewInode)
235 struct timespec local_mtime;
237 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
238 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
240 __u32 type = le32_to_cpu(pfindData->Type);
241 __u64 num_of_bytes = le64_to_cpu(pfindData->NumOfBytes);
242 __u64 end_of_file = le64_to_cpu(pfindData->EndOfFile);
243 cifsInfo->time = jiffies;
244 atomic_inc(&cifsInfo->inUse);
246 /* save mtime and size */
247 local_mtime = tmp_inode->i_mtime;
248 local_size = tmp_inode->i_size;
251 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
253 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastModificationTime));
255 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastStatusChange));
257 tmp_inode->i_mode = le64_to_cpu(pfindData->Permissions);
258 if (type == UNIX_FILE) {
259 *pobject_type = DT_REG;
260 tmp_inode->i_mode |= S_IFREG;
261 } else if (type == UNIX_SYMLINK) {
262 *pobject_type = DT_LNK;
263 tmp_inode->i_mode |= S_IFLNK;
264 } else if (type == UNIX_DIR) {
265 *pobject_type = DT_DIR;
266 tmp_inode->i_mode |= S_IFDIR;
267 } else if (type == UNIX_CHARDEV) {
268 *pobject_type = DT_CHR;
269 tmp_inode->i_mode |= S_IFCHR;
270 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
271 le64_to_cpu(pfindData->DevMinor) & MINORMASK);
272 } else if (type == UNIX_BLOCKDEV) {
273 *pobject_type = DT_BLK;
274 tmp_inode->i_mode |= S_IFBLK;
275 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pfindData->DevMajor),
276 le64_to_cpu(pfindData->DevMinor) & MINORMASK);
277 } else if (type == UNIX_FIFO) {
278 *pobject_type = DT_FIFO;
279 tmp_inode->i_mode |= S_IFIFO;
280 } else if (type == UNIX_SOCKET) {
281 *pobject_type = DT_SOCK;
282 tmp_inode->i_mode |= S_IFSOCK;
285 tmp_inode->i_uid = le64_to_cpu(pfindData->Uid);
286 tmp_inode->i_gid = le64_to_cpu(pfindData->Gid);
287 tmp_inode->i_nlink = le64_to_cpu(pfindData->Nlinks);
289 if (is_size_safe_to_change(cifsInfo)) {
290 /* can not safely change the file size here if the
291 client is writing to it due to potential races */
292 i_size_write(tmp_inode,end_of_file);
294 /* 512 bytes (2**9) is the fake blocksize that must be used */
295 /* for this calculation, not the real blocksize */
296 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
299 if (S_ISREG(tmp_inode->i_mode)) {
300 cFYI(1, ("File inode"));
301 tmp_inode->i_op = &cifs_file_inode_ops;
302 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
303 tmp_inode->i_fop = &cifs_file_direct_ops;
305 tmp_inode->i_fop = &cifs_file_ops;
306 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
307 tmp_inode->i_fop->lock = NULL;
308 tmp_inode->i_data.a_ops = &cifs_addr_ops;
311 return; /* No sense invalidating pages for new inode since we
312 have not started caching readahead file data yet */
314 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
315 (local_size == tmp_inode->i_size)) {
316 cFYI(1, ("inode exists but unchanged"));
318 /* file may have changed on server */
319 cFYI(1, ("invalidate inode, readdir detected change"));
320 invalidate_remote_inode(tmp_inode);
322 } else if (S_ISDIR(tmp_inode->i_mode)) {
323 cFYI(1, ("Directory inode"));
324 tmp_inode->i_op = &cifs_dir_inode_ops;
325 tmp_inode->i_fop = &cifs_dir_ops;
326 } else if (S_ISLNK(tmp_inode->i_mode)) {
327 cFYI(1, ("Symbolic Link inode"));
328 tmp_inode->i_op = &cifs_symlink_inode_ops;
329 /* tmp_inode->i_fop = *//* do not need to set to anything */
331 cFYI(1, ("Special inode"));
332 init_special_inode(tmp_inode, tmp_inode->i_mode,
337 static int initiate_cifs_search(const int xid, struct file *file)
341 struct cifsFileInfo * cifsFile;
342 struct cifs_sb_info *cifs_sb;
343 struct cifsTconInfo *pTcon;
345 if(file->private_data == NULL) {
347 kmalloc(sizeof(struct cifsFileInfo),GFP_KERNEL);
350 if(file->private_data == NULL) {
353 memset(file->private_data,0,sizeof(struct cifsFileInfo));
355 cifsFile = file->private_data;
356 cifsFile->invalidHandle = TRUE;
357 cifsFile->srch_inf.endOfSearch = FALSE;
359 if(file->f_dentry == NULL)
362 cifs_sb = CIFS_SB(file->f_dentry->d_sb);
366 pTcon = cifs_sb->tcon;
370 down(&file->f_dentry->d_sb->s_vfs_rename_sem);
371 full_path = build_path_from_dentry(file->f_dentry);
372 up(&file->f_dentry->d_sb->s_vfs_rename_sem);
374 if(full_path == NULL) {
378 cFYI(1, ("Full path: %s start at: %lld", full_path, file->f_pos));
381 /* test for Unix extensions */
382 if (pTcon->ses->capabilities & CAP_UNIX) {
383 cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
384 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
385 cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
386 } else /* not srvinos - BB fixme add check for backlevel? */ {
387 cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
390 rc = CIFSFindFirst(xid, pTcon,full_path,cifs_sb->local_nls,
391 &cifsFile->netfid, &cifsFile->srch_inf,
392 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb));
394 cifsFile->invalidHandle = FALSE;
395 if((rc == -EOPNOTSUPP) &&
396 (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
397 cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
404 /* return length of unicode string in bytes */
405 static int cifs_unicode_bytelen(char *str)
408 __le16 * ustr = (__le16 *)str;
410 for(len=0;len <= PATH_MAX;len++) {
414 cFYI(1,("Unicode string longer than PATH_MAX found"));
418 static char *nxt_dir_entry(char *old_entry, char *end_of_smb)
421 FILE_DIRECTORY_INFO * pDirInfo = (FILE_DIRECTORY_INFO *)old_entry;
423 new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset);
424 cFYI(1,("new entry %p old entry %p",new_entry,old_entry));
425 /* validate that new_entry is not past end of SMB */
426 if(new_entry >= end_of_smb) {
428 ("search entry %p began after end of SMB %p old entry %p",
429 new_entry, end_of_smb, old_entry));
431 } else if (new_entry + sizeof(FILE_DIRECTORY_INFO) > end_of_smb) {
432 cERROR(1,("search entry %p extends after end of SMB %p",
433 new_entry, end_of_smb));
440 #define UNICODE_DOT cpu_to_le16(0x2e)
442 /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */
443 static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
446 char * filename = NULL;
449 if(cfile->srch_inf.info_level == 0x202) {
450 FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
451 filename = &pFindData->FileName[0];
452 if(cfile->srch_inf.unicode) {
453 len = cifs_unicode_bytelen(filename);
455 /* BB should we make this strnlen of PATH_MAX? */
456 len = strnlen(filename, 5);
458 } else if(cfile->srch_inf.info_level == 0x101) {
459 FILE_DIRECTORY_INFO * pFindData =
460 (FILE_DIRECTORY_INFO *)current_entry;
461 filename = &pFindData->FileName[0];
462 len = le32_to_cpu(pFindData->FileNameLength);
463 } else if(cfile->srch_inf.info_level == 0x102) {
464 FILE_FULL_DIRECTORY_INFO * pFindData =
465 (FILE_FULL_DIRECTORY_INFO *)current_entry;
466 filename = &pFindData->FileName[0];
467 len = le32_to_cpu(pFindData->FileNameLength);
468 } else if(cfile->srch_inf.info_level == 0x105) {
469 SEARCH_ID_FULL_DIR_INFO * pFindData =
470 (SEARCH_ID_FULL_DIR_INFO *)current_entry;
471 filename = &pFindData->FileName[0];
472 len = le32_to_cpu(pFindData->FileNameLength);
473 } else if(cfile->srch_inf.info_level == 0x104) {
474 FILE_BOTH_DIRECTORY_INFO * pFindData =
475 (FILE_BOTH_DIRECTORY_INFO *)current_entry;
476 filename = &pFindData->FileName[0];
477 len = le32_to_cpu(pFindData->FileNameLength);
479 cFYI(1,("Unknown findfirst level %d",cfile->srch_inf.info_level));
483 if(cfile->srch_inf.unicode) {
484 __le16 *ufilename = (__le16 *)filename;
487 if(ufilename[0] == UNICODE_DOT)
489 } else if(len == 4) {
491 if((ufilename[0] == UNICODE_DOT)
492 &&(ufilename[1] == UNICODE_DOT))
497 if(filename[0] == '.')
499 } else if(len == 2) {
500 if((filename[0] == '.') && (filename[1] == '.'))
509 /* find the corresponding entry in the search */
510 /* Note that the SMB server returns search entries for . and .. which
511 complicates logic here if we choose to parse for them and we do not
512 assume that they are located in the findfirst return buffer.*/
513 /* We start counting in the buffer with entry 2 and increment for every
514 entry (do not increment for . or .. entry) */
515 static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
516 struct file *file, char **ppCurrentEntry, int *num_to_ret)
520 loff_t first_entry_in_buffer;
521 loff_t index_to_find = file->f_pos;
522 struct cifsFileInfo * cifsFile = file->private_data;
523 /* check if index in the buffer */
525 if((cifsFile == NULL) || (ppCurrentEntry == NULL) || (num_to_ret == NULL))
528 *ppCurrentEntry = NULL;
529 first_entry_in_buffer =
530 cifsFile->srch_inf.index_of_last_entry -
531 cifsFile->srch_inf.entries_in_buffer;
532 /* dump_cifs_file_struct(file, "In fce ");*/
533 if(index_to_find < first_entry_in_buffer) {
534 /* close and restart search */
535 cFYI(1,("search backing up - close and restart search"));
536 cifsFile->invalidHandle = TRUE;
537 CIFSFindClose(xid, pTcon, cifsFile->netfid);
538 kfree(cifsFile->search_resume_name);
539 cifsFile->search_resume_name = NULL;
540 if(cifsFile->srch_inf.ntwrk_buf_start) {
541 cFYI(1,("freeing SMB ff cache buf on search rewind"));
542 cifs_buf_release(cifsFile->srch_inf.ntwrk_buf_start);
544 rc = initiate_cifs_search(xid,file);
546 cFYI(1,("error %d reinitiating a search on rewind",rc));
551 while((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
552 (rc == 0) && (cifsFile->srch_inf.endOfSearch == FALSE)){
553 cFYI(1,("calling findnext2"));
554 rc = CIFSFindNext(xid,pTcon,cifsFile->netfid,
555 &cifsFile->srch_inf);
559 if(index_to_find < cifsFile->srch_inf.index_of_last_entry) {
560 /* we found the buffer that contains the entry */
561 /* scan and find it */
563 char * current_entry;
564 char * end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
565 smbCalcSize((struct smb_hdr *)
566 cifsFile->srch_inf.ntwrk_buf_start);
567 first_entry_in_buffer = cifsFile->srch_inf.index_of_last_entry
568 - cifsFile->srch_inf.entries_in_buffer;
569 pos_in_buf = index_to_find - first_entry_in_buffer;
570 cFYI(1,("found entry - pos_in_buf %d",pos_in_buf));
571 current_entry = cifsFile->srch_inf.srch_entries_start;
572 for(i=0;(i<(pos_in_buf)) && (current_entry != NULL);i++) {
573 /* go entry by entry figuring out which is first */
576 rc = cifs_entry_is_dot(current_entry,cifsFile);
577 if(rc == 1) /* is . or .. so skip */ {
578 cFYI(1,("Entry is .")); /* BB removeme BB */
580 } else if (rc == 2 ) {
581 cFYI(1,("Entry is ..")); /* BB removeme BB */
584 current_entry = nxt_dir_entry(current_entry,end_of_smb);
586 if((current_entry == NULL) && (i < pos_in_buf)) {
587 /* BB fixme - check if we should flag this error */
588 cERROR(1,("reached end of buf searching for pos in buf"
589 " %d index to find %lld rc %d",
590 pos_in_buf,index_to_find,rc));
593 *ppCurrentEntry = current_entry;
595 cFYI(1,("index not in buffer - could not findnext into it"));
599 if(pos_in_buf >= cifsFile->srch_inf.entries_in_buffer) {
600 cFYI(1,("can not return entries when pos_in_buf beyond last entry"));
603 *num_to_ret = cifsFile->srch_inf.entries_in_buffer - pos_in_buf;
608 /* inode num, inode type and filename returned */
609 static int cifs_get_name_from_search_buf(struct qstr *pqst,
610 char *current_entry, __u16 level, unsigned int unicode,
611 struct cifs_sb_info * cifs_sb, ino_t *pinum)
614 unsigned int len = 0;
616 struct nls_table * nlt = cifs_sb->local_nls;
620 if(level == SMB_FIND_FILE_UNIX) {
621 FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
623 filename = &pFindData->FileName[0];
625 len = cifs_unicode_bytelen(filename);
627 /* BB should we make this strnlen of PATH_MAX? */
628 len = strnlen(filename, PATH_MAX);
631 /* BB fixme - hash low and high 32 bits if not 64 bit arch BB fixme */
632 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
633 *pinum = pFindData->UniqueId;
634 } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) {
635 FILE_DIRECTORY_INFO * pFindData =
636 (FILE_DIRECTORY_INFO *)current_entry;
637 filename = &pFindData->FileName[0];
638 len = le32_to_cpu(pFindData->FileNameLength);
639 } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
640 FILE_FULL_DIRECTORY_INFO * pFindData =
641 (FILE_FULL_DIRECTORY_INFO *)current_entry;
642 filename = &pFindData->FileName[0];
643 len = le32_to_cpu(pFindData->FileNameLength);
644 } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
645 SEARCH_ID_FULL_DIR_INFO * pFindData =
646 (SEARCH_ID_FULL_DIR_INFO *)current_entry;
647 filename = &pFindData->FileName[0];
648 len = le32_to_cpu(pFindData->FileNameLength);
649 *pinum = pFindData->UniqueId;
650 } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
651 FILE_BOTH_DIRECTORY_INFO * pFindData =
652 (FILE_BOTH_DIRECTORY_INFO *)current_entry;
653 filename = &pFindData->FileName[0];
654 len = le32_to_cpu(pFindData->FileNameLength);
656 cFYI(1,("Unknown findfirst level %d",level));
660 /* BB fixme - test with long names */
661 /* Note converted filename can be longer than in unicode */
662 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
663 pqst->len = cifs_convertUCSpath((char *)pqst->name,
664 (__le16 *)filename, len/2, nlt);
666 pqst->len = cifs_strfromUCS_le((char *)pqst->name,
667 (wchar_t *)filename,len/2,nlt);
669 pqst->name = filename;
672 pqst->hash = full_name_hash(pqst->name,pqst->len);
673 /* cFYI(1,("filldir on %s",pqst->name)); */
677 static int cifs_filldir(char *pfindEntry, struct file *file,
678 filldir_t filldir, void *direntry, char *scratch_buf)
682 struct cifsFileInfo * pCifsF;
685 struct cifs_sb_info * cifs_sb;
686 struct inode *tmp_inode;
687 struct dentry *tmp_dentry;
689 /* get filename and len into qstring */
691 /* decide whether to create and populate ionde */
692 if((direntry == NULL) || (file == NULL))
695 pCifsF = file->private_data;
697 if((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL))
700 if(file->f_dentry == NULL)
703 cifs_sb = CIFS_SB(file->f_dentry->d_sb);
705 qstring.name = scratch_buf;
706 rc = cifs_get_name_from_search_buf(&qstring,pfindEntry,
707 pCifsF->srch_inf.info_level,
708 pCifsF->srch_inf.unicode,cifs_sb,
709 &inum /* returned */);
714 rc = construct_dentry(&qstring,file,&tmp_inode, &tmp_dentry);
715 if((tmp_inode == NULL) || (tmp_dentry == NULL))
719 /* inode created, we need to hash it with right inode number */
721 /* BB fixme - hash the 2 32 quantities bits together if necessary BB */
722 tmp_inode->i_ino = inum;
724 insert_inode_hash(tmp_inode);
727 /* we pass in rc below, indicating whether it is a new inode,
728 so we can figure out whether to invalidate the inode cached
729 data if the file has changed */
730 if(pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
731 unix_fill_in_inode(tmp_inode,
732 (FILE_UNIX_INFO *)pfindEntry,&obj_type, rc);
734 fill_in_inode(tmp_inode,
735 (FILE_DIRECTORY_INFO *)pfindEntry,&obj_type, rc);
738 rc = filldir(direntry,qstring.name,qstring.len,file->f_pos,
739 tmp_inode->i_ino,obj_type);
741 cFYI(1,("filldir rc = %d",rc));
748 static int cifs_save_resume_key(const char *current_entry,
749 struct cifsFileInfo *cifsFile)
752 unsigned int len = 0;
756 if((cifsFile == NULL) || (current_entry == NULL))
759 level = cifsFile->srch_inf.info_level;
761 if(level == SMB_FIND_FILE_UNIX) {
762 FILE_UNIX_INFO * pFindData = (FILE_UNIX_INFO *)current_entry;
764 filename = &pFindData->FileName[0];
765 if(cifsFile->srch_inf.unicode) {
766 len = cifs_unicode_bytelen(filename);
768 /* BB should we make this strnlen of PATH_MAX? */
769 len = strnlen(filename, PATH_MAX);
771 cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
772 } else if(level == SMB_FIND_FILE_DIRECTORY_INFO) {
773 FILE_DIRECTORY_INFO * pFindData =
774 (FILE_DIRECTORY_INFO *)current_entry;
775 filename = &pFindData->FileName[0];
776 len = le32_to_cpu(pFindData->FileNameLength);
777 cifsFile->srch_inf.resume_key = pFindData->FileIndex;
778 } else if(level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
779 FILE_FULL_DIRECTORY_INFO * pFindData =
780 (FILE_FULL_DIRECTORY_INFO *)current_entry;
781 filename = &pFindData->FileName[0];
782 len = le32_to_cpu(pFindData->FileNameLength);
783 cifsFile->srch_inf.resume_key = pFindData->FileIndex;
784 } else if(level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
785 SEARCH_ID_FULL_DIR_INFO * pFindData =
786 (SEARCH_ID_FULL_DIR_INFO *)current_entry;
787 filename = &pFindData->FileName[0];
788 len = le32_to_cpu(pFindData->FileNameLength);
789 cifsFile->srch_inf.resume_key = pFindData->FileIndex;
790 } else if(level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
791 FILE_BOTH_DIRECTORY_INFO * pFindData =
792 (FILE_BOTH_DIRECTORY_INFO *)current_entry;
793 filename = &pFindData->FileName[0];
794 len = le32_to_cpu(pFindData->FileNameLength);
795 cifsFile->srch_inf.resume_key = pFindData->FileIndex;
797 cFYI(1,("Unknown findfirst level %d",level));
800 cifsFile->srch_inf.resume_name_len = len;
801 cifsFile->srch_inf.presume_name = filename;
805 int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
809 struct cifs_sb_info *cifs_sb;
810 struct cifsTconInfo *pTcon;
811 struct cifsFileInfo *cifsFile = NULL;
812 char * current_entry;
814 char * tmp_buf = NULL;
819 if(file->f_dentry == NULL) {
824 cifs_sb = CIFS_SB(file->f_dentry->d_sb);
825 pTcon = cifs_sb->tcon;
830 switch ((int) file->f_pos) {
832 /*if (filldir(direntry, ".", 1, file->f_pos,
833 file->f_dentry->d_inode->i_ino, DT_DIR) < 0) {
834 cERROR(1, ("Filldir for current dir failed "));
840 /* if (filldir(direntry, "..", 2, file->f_pos,
841 file->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
842 cERROR(1, ("Filldir for parent dir failed "));
848 /* 1) If search is active,
849 is in current search buffer?
850 if it before then restart search
851 if after then keep searching till find it */
853 if(file->private_data == NULL) {
854 rc = initiate_cifs_search(xid,file);
855 cFYI(1,("initiate cifs search rc %d",rc));
862 if(file->private_data == NULL) {
867 cifsFile = file->private_data;
868 if (cifsFile->srch_inf.endOfSearch) {
869 if(cifsFile->srch_inf.emptyDir) {
870 cFYI(1, ("End of search, empty dir"));
875 cifsFile->invalidHandle = TRUE;
876 CIFSFindClose(xid, pTcon, cifsFile->netfid);
878 kfree(cifsFile->search_resume_name);
879 cifsFile->search_resume_name = NULL; */
881 /* BB account for . and .. in f_pos as special case */
883 rc = find_cifs_entry(xid,pTcon, file,
884 ¤t_entry,&num_to_fill);
886 cFYI(1,("fce error %d",rc));
888 } else if (current_entry != NULL) {
889 cFYI(1,("entry %lld found",file->f_pos));
891 cFYI(1,("could not find entry"));
894 cFYI(1,("loop through %d times filling dir for net buf %p",
895 num_to_fill,cifsFile->srch_inf.ntwrk_buf_start));
896 end_of_smb = cifsFile->srch_inf.ntwrk_buf_start +
897 smbCalcSize((struct smb_hdr *)
898 cifsFile->srch_inf.ntwrk_buf_start);
899 /* To be safe - for UCS to UTF-8 with strings loaded
900 with the rare long characters alloc more to account for
901 such multibyte target UTF-8 characters. cifs_unicode.c,
902 which actually does the conversion, has the same limit */
903 tmp_buf = kmalloc((2 * NAME_MAX) + 4, GFP_KERNEL);
904 for(i=0;(i<num_to_fill) && (rc == 0);i++) {
905 if(current_entry == NULL) {
906 /* evaluate whether this case is an error */
907 cERROR(1,("past end of SMB num to fill %d i %d",
912 rc = cifs_filldir(current_entry, file,
913 filldir, direntry,tmp_buf);
915 if(file->f_pos == cifsFile->srch_inf.index_of_last_entry) {
916 cFYI(1,("last entry in buf at pos %lld %s",
917 file->f_pos,tmp_buf)); /* BB removeme BB */
918 cifs_save_resume_key(current_entry,cifsFile);
921 current_entry = nxt_dir_entry(current_entry,