2 Unix SMB/CIFS implementation.
3 Directory handling routines
4 Copyright (C) Andrew Tridgell 1992-1998
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 This module implements directory related functions for Samba.
27 extern struct current_user current_user;
29 /* Make directory handle internals available. */
31 #define NAME_CACHE_SIZE 100
33 struct name_cache_entry {
39 connection_struct *conn;
43 struct name_cache_entry *name_cache;
44 unsigned int name_cache_index;
45 unsigned int file_number;
49 struct dptr_struct *next, *prev;
52 struct connection_struct *conn;
53 struct smb_Dir *dir_hnd;
58 BOOL has_wild; /* Set to true if the wcard entry has MS wildcard characters in it. */
61 static struct bitmap *dptr_bmap;
62 static struct dptr_struct *dirptrs;
63 static int dirhandles_open = 0;
65 #define INVALID_DPTR_KEY (-3)
67 /****************************************************************************
69 ****************************************************************************/
71 void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,uint32 mode,time_t date, BOOL uc)
78 if ((mode & aDIR) != 0)
82 if ((p = strchr_m(mask2,'.')) != NULL) {
84 push_ascii(buf+1,mask2,8, 0);
85 push_ascii(buf+9,p+1,3, 0);
88 push_ascii(buf+1,mask2,11, 0);
90 memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
92 put_dos_date(buf,22,date);
93 SSVAL(buf,26,size & 0xFFFF);
94 SSVAL(buf,28,(size >> 16)&0xFFFF);
95 /* We only uppercase if FLAGS2_LONG_PATH_COMPONENTS is zero in the input buf.
96 Strange, but verified on W2K3. Needed for OS/2. JRA. */
97 push_ascii(buf+30,fname,12, uc ? STR_UPPER : 0);
98 DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
101 /****************************************************************************
102 Initialise the dir bitmap.
103 ****************************************************************************/
105 void init_dptrs(void)
107 static BOOL dptrs_init=False;
112 dptr_bmap = bitmap_allocate(MAX_DIRECTORY_HANDLES);
115 exit_server("out of memory in init_dptrs");
120 /****************************************************************************
121 Idle a dptr - the directory is closed but the control info is kept.
122 ****************************************************************************/
124 static void dptr_idle(struct dptr_struct *dptr)
127 DEBUG(4,("Idling dptr dnum %d\n",dptr->dnum));
128 CloseDir(dptr->dir_hnd);
129 dptr->dir_hnd = NULL;
133 /****************************************************************************
134 Idle the oldest dptr.
135 ****************************************************************************/
137 static void dptr_idleoldest(void)
139 struct dptr_struct *dptr;
142 * Go to the end of the list.
144 for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
148 DEBUG(0,("No dptrs available to idle ?\n"));
153 * Idle the oldest pointer.
156 for(; dptr; dptr = dptr->prev) {
164 /****************************************************************************
165 Get the struct dptr_struct for a dir index.
166 ****************************************************************************/
168 static struct dptr_struct *dptr_get(int key, BOOL forclose)
170 struct dptr_struct *dptr;
172 for(dptr = dirptrs; dptr; dptr = dptr->next) {
173 if(dptr->dnum == key) {
174 if (!forclose && !dptr->dir_hnd) {
175 if (dirhandles_open >= MAX_OPEN_DIRECTORIES)
177 DEBUG(4,("dptr_get: Reopening dptr key %d\n",key));
178 if (!(dptr->dir_hnd = OpenDir(dptr->conn, dptr->path, dptr->wcard, dptr->attr))) {
179 DEBUG(4,("dptr_get: Failed to open %s (%s)\n",dptr->path,
184 DLIST_PROMOTE(dirptrs,dptr);
191 /****************************************************************************
192 Get the dir path for a dir index.
193 ****************************************************************************/
195 char *dptr_path(int key)
197 struct dptr_struct *dptr = dptr_get(key, False);
203 /****************************************************************************
204 Get the dir wcard for a dir index.
205 ****************************************************************************/
207 char *dptr_wcard(int key)
209 struct dptr_struct *dptr = dptr_get(key, False);
215 /****************************************************************************
216 Get the dir attrib for a dir index.
217 ****************************************************************************/
219 uint16 dptr_attr(int key)
221 struct dptr_struct *dptr = dptr_get(key, False);
227 /****************************************************************************
228 Close a dptr (internal func).
229 ****************************************************************************/
231 static void dptr_close_internal(struct dptr_struct *dptr)
233 DEBUG(4,("closing dptr key %d\n",dptr->dnum));
235 DLIST_REMOVE(dirptrs, dptr);
238 * Free the dnum in the bitmap. Remember the dnum value is always
239 * biased by one with respect to the bitmap.
242 if(bitmap_query( dptr_bmap, dptr->dnum - 1) != True) {
243 DEBUG(0,("dptr_close_internal : Error - closing dnum = %d and bitmap not set !\n",
247 bitmap_clear(dptr_bmap, dptr->dnum - 1);
250 CloseDir(dptr->dir_hnd);
253 /* Lanman 2 specific code */
254 SAFE_FREE(dptr->wcard);
255 string_set(&dptr->path,"");
259 /****************************************************************************
260 Close a dptr given a key.
261 ****************************************************************************/
263 void dptr_close(int *key)
265 struct dptr_struct *dptr;
267 if(*key == INVALID_DPTR_KEY)
270 /* OS/2 seems to use -1 to indicate "close all directories" */
272 struct dptr_struct *next;
273 for(dptr = dirptrs; dptr; dptr = next) {
275 dptr_close_internal(dptr);
277 *key = INVALID_DPTR_KEY;
281 dptr = dptr_get(*key, True);
284 DEBUG(0,("Invalid key %d given to dptr_close\n", *key));
288 dptr_close_internal(dptr);
290 *key = INVALID_DPTR_KEY;
293 /****************************************************************************
294 Close all dptrs for a cnum.
295 ****************************************************************************/
297 void dptr_closecnum(connection_struct *conn)
299 struct dptr_struct *dptr, *next;
300 for(dptr = dirptrs; dptr; dptr = next) {
302 if (dptr->conn == conn)
303 dptr_close_internal(dptr);
307 /****************************************************************************
308 Idle all dptrs for a cnum.
309 ****************************************************************************/
311 void dptr_idlecnum(connection_struct *conn)
313 struct dptr_struct *dptr;
314 for(dptr = dirptrs; dptr; dptr = dptr->next) {
315 if (dptr->conn == conn && dptr->dir_hnd)
320 /****************************************************************************
321 Close a dptr that matches a given path, only if it matches the spid also.
322 ****************************************************************************/
324 void dptr_closepath(char *path,uint16 spid)
326 struct dptr_struct *dptr, *next;
327 for(dptr = dirptrs; dptr; dptr = next) {
329 if (spid == dptr->spid && strequal(dptr->path,path))
330 dptr_close_internal(dptr);
334 /****************************************************************************
335 Try and close the oldest handle not marked for
336 expect close in the hope that the client has
337 finished with that one.
338 ****************************************************************************/
340 static void dptr_close_oldest(BOOL old)
342 struct dptr_struct *dptr;
345 * Go to the end of the list.
347 for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
351 DEBUG(0,("No old dptrs available to close oldest ?\n"));
356 * If 'old' is true, close the oldest oldhandle dnum (ie. 1 < dnum < 256) that
357 * does not have expect_close set. If 'old' is false, close
358 * one of the new dnum handles.
361 for(; dptr; dptr = dptr->prev) {
362 if ((old && (dptr->dnum < 256) && !dptr->expect_close) ||
363 (!old && (dptr->dnum > 255))) {
364 dptr_close_internal(dptr);
370 /****************************************************************************
371 Create a new dir ptr. If the flag old_handle is true then we must allocate
372 from the bitmap range 0 - 255 as old SMBsearch directory handles are only
373 one byte long. If old_handle is false we allocate from the range
374 256 - MAX_DIRECTORY_HANDLES. We bias the number we return by 1 to ensure
375 a directory handle is never zero.
376 ****************************************************************************/
378 int dptr_create(connection_struct *conn, pstring path, BOOL old_handle, BOOL expect_close,uint16 spid,
379 const char *wcard, uint32 attr)
381 struct dptr_struct *dptr = NULL;
382 struct smb_Dir *dir_hnd;
385 DEBUG(5,("dptr_create dir=%s\n", path));
387 if (!check_name(path,conn))
388 return(-2); /* Code to say use a unix error return code. */
390 /* use a const pointer from here on */
395 dir_hnd = OpenDir(conn, dir2, wcard, attr);
400 string_set(&conn->dirpath,dir2);
402 if (dirhandles_open >= MAX_OPEN_DIRECTORIES)
405 dptr = SMB_MALLOC_P(struct dptr_struct);
407 DEBUG(0,("malloc fail in dptr_create.\n"));
417 * This is an old-style SMBsearch request. Ensure the
418 * value we return will fit in the range 1-255.
421 dptr->dnum = bitmap_find(dptr_bmap, 0);
423 if(dptr->dnum == -1 || dptr->dnum > 254) {
426 * Try and close the oldest handle not marked for
427 * expect close in the hope that the client has
428 * finished with that one.
431 dptr_close_oldest(True);
433 /* Now try again... */
434 dptr->dnum = bitmap_find(dptr_bmap, 0);
435 if(dptr->dnum == -1 || dptr->dnum > 254) {
436 DEBUG(0,("dptr_create: returned %d: Error - all old dirptrs in use ?\n", dptr->dnum));
445 * This is a new-style trans2 request. Allocate from
446 * a range that will return 256 - MAX_DIRECTORY_HANDLES.
449 dptr->dnum = bitmap_find(dptr_bmap, 255);
451 if(dptr->dnum == -1 || dptr->dnum < 255) {
454 * Try and close the oldest handle close in the hope that
455 * the client has finished with that one. This will only
456 * happen in the case of the Win98 client bug where it leaks
460 dptr_close_oldest(False);
462 /* Now try again... */
463 dptr->dnum = bitmap_find(dptr_bmap, 255);
465 if(dptr->dnum == -1 || dptr->dnum < 255) {
466 DEBUG(0,("dptr_create: returned %d: Error - all new dirptrs in use ?\n", dptr->dnum));
474 bitmap_set(dptr_bmap, dptr->dnum);
476 dptr->dnum += 1; /* Always bias the dnum by one - no zero dnums allowed. */
478 string_set(&dptr->path,dir2);
480 dptr->dir_hnd = dir_hnd;
482 dptr->expect_close = expect_close;
484 dptr->wcard = SMB_STRDUP(wcard);
486 bitmap_clear(dptr_bmap, dptr->dnum - 1);
495 if (lp_posix_pathnames() || (wcard && (wcard[0] == '.' && wcard[1] == 0))) {
496 dptr->has_wild = True;
498 dptr->has_wild = ms_has_wild(wcard);
501 DLIST_ADD(dirptrs, dptr);
503 DEBUG(3,("creating new dirptr %d for path %s, expect_close = %d\n",
504 dptr->dnum,path,expect_close));
512 /****************************************************************************
513 Wrapper functions to access the lower level directory handles.
514 ****************************************************************************/
516 int dptr_CloseDir(struct dptr_struct *dptr)
518 return CloseDir(dptr->dir_hnd);
521 void dptr_SeekDir(struct dptr_struct *dptr, long offset)
523 SeekDir(dptr->dir_hnd, offset);
526 long dptr_TellDir(struct dptr_struct *dptr)
528 return TellDir(dptr->dir_hnd);
531 /****************************************************************************
532 Return the next visible file name, skipping veto'd and invisible files.
533 ****************************************************************************/
535 static const char *dptr_normal_ReadDirName(struct dptr_struct *dptr, long *poffset, SMB_STRUCT_STAT *pst)
537 /* Normal search for the next file. */
539 while ((name = ReadDirName(dptr->dir_hnd, poffset)) != NULL) {
540 if (is_visible_file(dptr->conn, dptr->path, name, pst, True)) {
547 /****************************************************************************
548 Return the next visible file name, skipping veto'd and invisible files.
549 ****************************************************************************/
551 const char *dptr_ReadDirName(struct dptr_struct *dptr, long *poffset, SMB_STRUCT_STAT *pst)
555 SET_STAT_INVALID(*pst);
557 if (dptr->has_wild) {
558 return dptr_normal_ReadDirName(dptr, poffset, pst);
561 /* If poffset is -1 then we know we returned this name before and we have
562 no wildcards. We're at the end of the directory. */
563 if (*poffset == -1) {
567 /* We know the stored wcard contains no wildcard characters. See if we can match
568 with a stat call. If we can't, then set has_wild to true to
569 prevent us from doing this on every call. */
571 /* First check if it should be visible. */
572 if (!is_visible_file(dptr->conn, dptr->path, dptr->wcard, pst, True)) {
573 dptr->has_wild = True;
574 return dptr_normal_ReadDirName(dptr, poffset, pst);
577 if (VALID_STAT(*pst)) {
578 /* We need to set the underlying dir_hdn offset to -1 also as
579 this function is usually called with the output from TellDir. */
580 dptr->dir_hnd->offset = *poffset = -1;
584 pstrcpy(pathreal,dptr->path);
585 pstrcat(pathreal,"/");
586 pstrcat(pathreal,dptr->wcard);
588 if (SMB_VFS_STAT(dptr->conn,pathreal,pst) == 0) {
589 /* We need to set the underlying dir_hdn offset to -1 also as
590 this function is usually called with the output from TellDir. */
591 dptr->dir_hnd->offset = *poffset = -1;
594 /* If we get any other error than ENOENT or ENOTDIR
595 then the file exists we just can't stat it. */
596 if (errno != ENOENT && errno != ENOTDIR) {
597 /* We need to set the underlying dir_hdn offset to -1 also as
598 this function is usually called with the output from TellDir. */
599 dptr->dir_hnd->offset = *poffset = -1;
604 /* In case sensitive mode we don't search - we know if it doesn't exist
605 with a stat we will fail. */
607 if (dptr->conn->case_sensitive) {
608 /* We need to set the underlying dir_hdn offset to -1 also as
609 this function is usually called with the output from TellDir. */
610 dptr->dir_hnd->offset = *poffset = -1;
613 dptr->has_wild = True;
614 return dptr_normal_ReadDirName(dptr, poffset, pst);
618 /****************************************************************************
619 Search for a file by name, skipping veto'ed and not visible files.
620 ****************************************************************************/
622 BOOL dptr_SearchDir(struct dptr_struct *dptr, const char *name, long *poffset, SMB_STRUCT_STAT *pst)
624 SET_STAT_INVALID(*pst);
626 if (!dptr->has_wild && (dptr->dir_hnd->offset == -1)) {
627 /* This is a singleton directory and we're already at the end. */
632 if (SearchDir(dptr->dir_hnd, name, poffset)) {
633 if (is_visible_file(dptr->conn, dptr->path, name, pst, True)) {
640 /****************************************************************************
641 Fill the 5 byte server reserved dptr field.
642 ****************************************************************************/
644 #define DPTR_MASK ((uint32)(((uint32)1)<<31))
646 BOOL dptr_fill(char *buf1,unsigned int key)
648 unsigned char *buf = (unsigned char *)buf1;
649 struct dptr_struct *dptr = dptr_get(key, False);
652 DEBUG(1,("filling null dirptr %d\n",key));
655 offset = (uint32)TellDir(dptr->dir_hnd);
656 DEBUG(6,("fill on key %u dirptr 0x%lx now at %d\n",key,
657 (long)dptr->dir_hnd,(int)offset));
658 if (offset != (uint32)-1 && (offset & DPTR_MASK)) {
659 DEBUG(0,("dptr_fill: Error - offset 0x%x has bit 32 set. Can't use in server state.\n",
660 (unsigned int)offset ));
664 SIVAL(buf,1,offset | DPTR_MASK);
668 /****************************************************************************
669 Fetch the dir ptr and seek it given the 5 byte server field.
670 ****************************************************************************/
672 struct dptr_struct *dptr_fetch(char *buf,int *num)
674 unsigned int key = *(unsigned char *)buf;
675 struct dptr_struct *dptr = dptr_get(key, False);
680 DEBUG(3,("fetched null dirptr %d\n",key));
684 offset = IVAL(buf,1);
685 if (offset == (uint32)-1) {
688 seekoff = (long)(offset & ~DPTR_MASK);
690 SeekDir(dptr->dir_hnd,seekoff);
691 DEBUG(3,("fetching dirptr %d for path %s at offset %d\n",
692 key,dptr_path(key),(int)seekoff));
696 /****************************************************************************
698 ****************************************************************************/
700 struct dptr_struct *dptr_fetch_lanman2(int dptr_num)
702 struct dptr_struct *dptr = dptr_get(dptr_num, False);
705 DEBUG(3,("fetched null dirptr %d\n",dptr_num));
708 DEBUG(3,("fetching dirptr %d for path %s\n",dptr_num,dptr_path(dptr_num)));
712 /****************************************************************************
713 Check a filetype for being valid.
714 ****************************************************************************/
716 BOOL dir_check_ftype(connection_struct *conn, uint32 mode, uint32 dirtype)
720 /* Check the "may have" search bits. */
721 if (((mode & ~dirtype) & (aHIDDEN | aSYSTEM | aDIR)) != 0)
724 /* Check the "must have" bits, which are the may have bits shifted eight */
725 /* If must have bit is set, the file/dir can not be returned in search unless the matching
726 file attribute is set */
727 mask = ((dirtype >> 8) & (aDIR|aARCH|aRONLY|aHIDDEN|aSYSTEM)); /* & 0x37 */
729 if((mask & (mode & (aDIR|aARCH|aRONLY|aHIDDEN|aSYSTEM))) == mask) /* check if matching attribute present */
738 static BOOL mangle_mask_match(connection_struct *conn, fstring filename, char *mask)
740 mangle_map(filename,True,False,SNUM(conn));
741 return mask_match_search(filename,mask,False);
744 /****************************************************************************
745 Get an 8.3 directory entry.
746 ****************************************************************************/
748 BOOL get_dir_entry(connection_struct *conn,char *mask,uint32 dirtype, pstring fname,
749 SMB_OFF_T *size,uint32 *mode,time_t *date,BOOL check_descend)
753 SMB_STRUCT_STAT sbuf;
759 *path = *pathreal = *filename = 0;
761 needslash = ( conn->dirpath[strlen(conn->dirpath) -1] != '/');
767 long curoff = dptr_TellDir(conn->dirptr);
768 dname = dptr_ReadDirName(conn->dirptr, &curoff, &sbuf);
770 DEBUG(6,("readdir on dirptr 0x%lx now at offset %ld\n",
771 (long)conn->dirptr,TellDir(conn->dirptr->dir_hnd)));
776 pstrcpy(filename,dname);
778 /* notice the special *.* handling. This appears to be the only difference
779 between the wildcard handling in this routine and in the trans2 routines.
780 see masktest for a demo
782 if ((strcmp(mask,"*.*") == 0) ||
783 mask_match_search(filename,mask,False) ||
784 mangle_mask_match(conn,filename,mask)) {
786 if (!mangle_is_8_3(filename, False, SNUM(conn)))
787 mangle_map(filename,True,False,SNUM(conn));
789 pstrcpy(fname,filename);
791 pstrcpy(path,conn->dirpath);
794 pstrcpy(pathreal,path);
796 pstrcat(pathreal,dname);
797 if (!VALID_STAT(sbuf) && (SMB_VFS_STAT(conn, pathreal, &sbuf)) != 0) {
798 DEBUG(5,("Couldn't stat 1 [%s]. Error = %s\n",path, strerror(errno) ));
802 *mode = dos_mode(conn,pathreal,&sbuf);
804 if (!dir_check_ftype(conn,*mode,dirtype)) {
805 DEBUG(5,("[%s] attribs didn't match %x\n",filename,(unsigned int)dirtype));
809 *size = sbuf.st_size;
810 *date = sbuf.st_mtime;
812 DEBUG(3,("get_dir_entry mask=[%s] found %s fname=%s\n",mask, pathreal,fname));
821 /*******************************************************************
822 Check to see if a user can read a file. This is only approximate,
823 it is used as part of the "hide unreadable" option. Don't
824 use it for anything security sensitive.
825 ********************************************************************/
827 static BOOL user_can_read_file(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
829 SEC_DESC *psd = NULL;
833 uint32 access_granted;
836 * If user is a member of the Admin group
837 * we never hide files from them.
840 if (conn->admin_user) {
844 /* If we can't stat it does not show it */
845 if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0)) {
849 /* Pseudo-open the file (note - no fd's created). */
851 if(S_ISDIR(pst->st_mode)) {
852 fsp = open_directory(conn, name, pst,
854 FILE_SHARE_READ|FILE_SHARE_WRITE,
856 0, /* no create options. */
859 fsp = open_file_stat(conn, name, pst);
866 /* Get NT ACL -allocated in main loop talloc context. No free needed here. */
867 sd_size = SMB_VFS_FGET_NT_ACL(fsp, fsp->fh->fd,
868 (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|DACL_SECURITY_INFORMATION), &psd);
869 close_file(fsp, True);
871 /* No access if SD get failed. */
876 return se_access_check(psd, current_user.nt_user_token, FILE_READ_DATA,
877 &access_granted, &status);
880 /*******************************************************************
881 Check to see if a user can write a file (and only files, we do not
882 check dirs on this one). This is only approximate,
883 it is used as part of the "hide unwriteable" option. Don't
884 use it for anything security sensitive.
885 ********************************************************************/
887 static BOOL user_can_write_file(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
889 SEC_DESC *psd = NULL;
894 uint32 access_granted;
897 * If user is a member of the Admin group
898 * we never hide files from them.
901 if (conn->admin_user) {
905 /* If we can't stat it does not show it */
906 if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0)) {
910 /* Pseudo-open the file */
912 if(S_ISDIR(pst->st_mode)) {
915 fsp = open_file_ntcreate(conn, name, pst,
916 FILE_WRITE_ATTRIBUTES,
917 FILE_SHARE_READ|FILE_SHARE_WRITE,
920 FILE_ATTRIBUTE_NORMAL,
929 /* Get NT ACL -allocated in main loop talloc context. No free needed here. */
930 sd_size = SMB_VFS_FGET_NT_ACL(fsp, fsp->fh->fd,
931 (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|DACL_SECURITY_INFORMATION), &psd);
932 close_file(fsp, False);
934 /* No access if SD get failed. */
938 return se_access_check(psd, current_user.nt_user_token, FILE_WRITE_DATA,
939 &access_granted, &status);
942 /*******************************************************************
943 Is a file a "special" type ?
944 ********************************************************************/
946 static BOOL file_is_special(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
949 * If user is a member of the Admin group
950 * we never hide files from them.
953 if (conn->admin_user)
956 /* If we can't stat it does not show it */
957 if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0))
960 if (S_ISREG(pst->st_mode) || S_ISDIR(pst->st_mode) || S_ISLNK(pst->st_mode))
966 /*******************************************************************
967 Should the file be seen by the client ?
968 ********************************************************************/
970 BOOL is_visible_file(connection_struct *conn, const char *dir_path, const char *name, SMB_STRUCT_STAT *pst, BOOL use_veto)
972 BOOL hide_unreadable = lp_hideunreadable(SNUM(conn));
973 BOOL hide_unwriteable = lp_hideunwriteable_files(SNUM(conn));
974 BOOL hide_special = lp_hide_special_files(SNUM(conn));
976 SET_STAT_INVALID(*pst);
978 if ((strcmp(".",name) == 0) || (strcmp("..",name) == 0)) {
979 return True; /* . and .. are always visible. */
982 /* If it's a vetoed file, pretend it doesn't even exist */
983 if (use_veto && IS_VETO_PATH(conn, name)) {
987 if (hide_unreadable || hide_unwriteable || hide_special) {
990 if (asprintf(&entry, "%s/%s", dir_path, name) == -1) {
993 /* Honour _hide unreadable_ option */
994 if (hide_unreadable && !user_can_read_file(conn, entry, pst)) {
998 /* Honour _hide unwriteable_ option */
999 if (hide_unwriteable && !user_can_write_file(conn, entry, pst)) {
1003 /* Honour _hide_special_ option */
1004 if (hide_special && file_is_special(conn, entry, pst)) {
1013 /*******************************************************************
1015 ********************************************************************/
1017 struct smb_Dir *OpenDir(connection_struct *conn, const char *name, const char *mask, uint32 attr)
1019 struct smb_Dir *dirp = SMB_MALLOC_P(struct smb_Dir);
1027 dirp->dir_path = SMB_STRDUP(name);
1028 if (!dirp->dir_path) {
1031 dirp->dir = SMB_VFS_OPENDIR(conn, dirp->dir_path, mask, attr);
1033 DEBUG(5,("OpenDir: Can't open %s. %s\n", dirp->dir_path, strerror(errno) ));
1037 dirp->name_cache = SMB_CALLOC_ARRAY(struct name_cache_entry, NAME_CACHE_SIZE);
1038 if (!dirp->name_cache) {
1049 SMB_VFS_CLOSEDIR(conn,dirp->dir);
1051 SAFE_FREE(dirp->dir_path);
1052 SAFE_FREE(dirp->name_cache);
1059 /*******************************************************************
1061 ********************************************************************/
1063 int CloseDir(struct smb_Dir *dirp)
1068 ret = SMB_VFS_CLOSEDIR(dirp->conn,dirp->dir);
1070 SAFE_FREE(dirp->dir_path);
1071 if (dirp->name_cache) {
1072 for (i = 0; i < NAME_CACHE_SIZE; i++) {
1073 SAFE_FREE(dirp->name_cache[i].name);
1076 SAFE_FREE(dirp->name_cache);
1082 /*******************************************************************
1083 Read from a directory. Also return current offset.
1084 Don't check for veto or invisible files.
1085 ********************************************************************/
1087 const char *ReadDirName(struct smb_Dir *dirp, long *poffset)
1090 connection_struct *conn = dirp->conn;
1092 /* Cheat to allow . and .. to be the first entries returned. */
1093 if ((*poffset == 0) && (dirp->file_number < 2)) {
1094 if (dirp->file_number == 0) {
1099 dirp->file_number++;
1102 /* A real offset, seek to it. */
1103 SeekDir(dirp, *poffset);
1106 while ((n = vfs_readdirname(conn, dirp->dir))) {
1107 struct name_cache_entry *e;
1108 /* Ignore . and .. - we've already returned them. */
1110 if ((n[1] == '\0') || (n[1] == '.' && n[2] == '\0')) {
1114 dirp->offset = SMB_VFS_TELLDIR(conn, dirp->dir);
1115 dirp->name_cache_index = (dirp->name_cache_index+1) % NAME_CACHE_SIZE;
1116 e = &dirp->name_cache[dirp->name_cache_index];
1118 e->name = SMB_STRDUP(n);
1119 *poffset = e->offset= dirp->offset;
1120 dirp->file_number++;
1127 /*******************************************************************
1128 Rewind to the start.
1129 ********************************************************************/
1131 void RewindDir(struct smb_Dir *dirp, long *poffset)
1133 SMB_VFS_REWINDDIR(dirp->conn, dirp->dir);
1134 dirp->file_number = 0;
1139 /*******************************************************************
1141 ********************************************************************/
1143 void SeekDir(struct smb_Dir *dirp, long offset)
1145 if (offset != dirp->offset) {
1147 RewindDir(dirp, &offset);
1149 SMB_VFS_SEEKDIR(dirp->conn, dirp->dir, offset);
1151 dirp->offset = offset;
1155 /*******************************************************************
1156 Tell a dir position.
1157 ********************************************************************/
1159 long TellDir(struct smb_Dir *dirp)
1161 return(dirp->offset);
1164 /*******************************************************************
1165 Find an entry by name. Leave us at the offset after it.
1166 Don't check for veto or invisible files.
1167 ********************************************************************/
1169 BOOL SearchDir(struct smb_Dir *dirp, const char *name, long *poffset)
1173 connection_struct *conn = dirp->conn;
1175 /* Search back in the name cache. */
1176 for (i = dirp->name_cache_index; i >= 0; i--) {
1177 struct name_cache_entry *e = &dirp->name_cache[i];
1178 if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
1179 *poffset = e->offset;
1180 SeekDir(dirp, e->offset);
1184 for (i = NAME_CACHE_SIZE-1; i > dirp->name_cache_index; i--) {
1185 struct name_cache_entry *e = &dirp->name_cache[i];
1186 if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
1187 *poffset = e->offset;
1188 SeekDir(dirp, e->offset);
1193 /* Not found in the name cache. Rewind directory and start from scratch. */
1194 SMB_VFS_REWINDDIR(conn, dirp->dir);
1195 dirp->file_number = 0;
1197 while ((entry = ReadDirName(dirp, poffset))) {
1198 if (conn->case_sensitive ? (strcmp(entry, name) == 0) : strequal(entry, name)) {