2 Unix SMB/CIFS implementation.
3 Directory handling routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2007
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program 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 the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "smbd/globals.h"
25 This module implements directory related functions for Samba.
28 /* "Special" directory offsets. */
29 #define END_OF_DIRECTORY_OFFSET ((long)-1)
30 #define START_OF_DIRECTORY_OFFSET ((long)0)
31 #define DOT_DOT_DIRECTORY_OFFSET ((long)0x80000000)
33 /* Make directory handle internals available. */
35 struct name_cache_entry {
41 connection_struct *conn;
45 size_t name_cache_size;
46 struct name_cache_entry *name_cache;
47 unsigned int name_cache_index;
48 unsigned int file_number;
52 struct dptr_struct *next, *prev;
55 struct connection_struct *conn;
56 struct smb_Dir *dir_hnd;
61 bool has_wild; /* Set to true if the wcard entry has MS wildcard characters in it. */
62 bool did_stat; /* Optimisation for non-wcard searches. */
66 #define INVALID_DPTR_KEY (-3)
68 /****************************************************************************
70 ****************************************************************************/
72 bool make_dir_struct(TALLOC_CTX *ctx,
82 char *mask2 = talloc_strdup(ctx, mask);
88 if ((mode & aDIR) != 0) {
93 if ((p = strchr_m(mask2,'.')) != NULL) {
95 push_ascii(buf+1,mask2,8, 0);
96 push_ascii(buf+9,p+1,3, 0);
99 push_ascii(buf+1,mask2,11, 0);
102 memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
104 srv_put_dos_date(buf,22,date);
105 SSVAL(buf,26,size & 0xFFFF);
106 SSVAL(buf,28,(size >> 16)&0xFFFF);
107 /* We only uppercase if FLAGS2_LONG_PATH_COMPONENTS is zero in the input buf.
108 Strange, but verified on W2K3. Needed for OS/2. JRA. */
109 push_ascii(buf+30,fname,12, uc ? STR_UPPER : 0);
110 DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
114 /****************************************************************************
115 Initialise the dir bitmap.
116 ****************************************************************************/
118 void init_dptrs(void)
123 dptr_bmap = bitmap_allocate(MAX_DIRECTORY_HANDLES);
126 exit_server("out of memory in init_dptrs");
129 /****************************************************************************
130 Idle a dptr - the directory is closed but the control info is kept.
131 ****************************************************************************/
133 static void dptr_idle(struct dptr_struct *dptr)
136 DEBUG(4,("Idling dptr dnum %d\n",dptr->dnum));
137 TALLOC_FREE(dptr->dir_hnd);
141 /****************************************************************************
142 Idle the oldest dptr.
143 ****************************************************************************/
145 static void dptr_idleoldest(void)
147 struct dptr_struct *dptr;
150 * Go to the end of the list.
152 for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
156 DEBUG(0,("No dptrs available to idle ?\n"));
161 * Idle the oldest pointer.
164 for(; dptr; dptr = dptr->prev) {
172 /****************************************************************************
173 Get the struct dptr_struct for a dir index.
174 ****************************************************************************/
176 static struct dptr_struct *dptr_get(int key, bool forclose)
178 struct dptr_struct *dptr;
180 for(dptr = dirptrs; dptr; dptr = dptr->next) {
181 if(dptr->dnum == key) {
182 if (!forclose && !dptr->dir_hnd) {
183 if (dirhandles_open >= MAX_OPEN_DIRECTORIES)
185 DEBUG(4,("dptr_get: Reopening dptr key %d\n",key));
186 if (!(dptr->dir_hnd = OpenDir(
187 NULL, dptr->conn, dptr->path,
188 dptr->wcard, dptr->attr))) {
189 DEBUG(4,("dptr_get: Failed to open %s (%s)\n",dptr->path,
194 DLIST_PROMOTE(dirptrs,dptr);
201 /****************************************************************************
202 Get the dir path for a dir index.
203 ****************************************************************************/
205 char *dptr_path(int key)
207 struct dptr_struct *dptr = dptr_get(key, False);
213 /****************************************************************************
214 Get the dir wcard for a dir index.
215 ****************************************************************************/
217 char *dptr_wcard(int key)
219 struct dptr_struct *dptr = dptr_get(key, False);
225 /****************************************************************************
226 Get the dir attrib for a dir index.
227 ****************************************************************************/
229 uint16 dptr_attr(int key)
231 struct dptr_struct *dptr = dptr_get(key, False);
237 /****************************************************************************
238 Close a dptr (internal func).
239 ****************************************************************************/
241 static void dptr_close_internal(struct dptr_struct *dptr)
243 DEBUG(4,("closing dptr key %d\n",dptr->dnum));
245 DLIST_REMOVE(dirptrs, dptr);
248 * Free the dnum in the bitmap. Remember the dnum value is always
249 * biased by one with respect to the bitmap.
252 if(bitmap_query( dptr_bmap, dptr->dnum - 1) != True) {
253 DEBUG(0,("dptr_close_internal : Error - closing dnum = %d and bitmap not set !\n",
257 bitmap_clear(dptr_bmap, dptr->dnum - 1);
259 TALLOC_FREE(dptr->dir_hnd);
261 /* Lanman 2 specific code */
262 SAFE_FREE(dptr->wcard);
263 string_set(&dptr->path,"");
267 /****************************************************************************
268 Close a dptr given a key.
269 ****************************************************************************/
271 void dptr_close(int *key)
273 struct dptr_struct *dptr;
275 if(*key == INVALID_DPTR_KEY)
278 /* OS/2 seems to use -1 to indicate "close all directories" */
280 struct dptr_struct *next;
281 for(dptr = dirptrs; dptr; dptr = next) {
283 dptr_close_internal(dptr);
285 *key = INVALID_DPTR_KEY;
289 dptr = dptr_get(*key, True);
292 DEBUG(0,("Invalid key %d given to dptr_close\n", *key));
296 dptr_close_internal(dptr);
298 *key = INVALID_DPTR_KEY;
301 /****************************************************************************
302 Close all dptrs for a cnum.
303 ****************************************************************************/
305 void dptr_closecnum(connection_struct *conn)
307 struct dptr_struct *dptr, *next;
308 for(dptr = dirptrs; dptr; dptr = next) {
310 if (dptr->conn == conn)
311 dptr_close_internal(dptr);
315 /****************************************************************************
316 Idle all dptrs for a cnum.
317 ****************************************************************************/
319 void dptr_idlecnum(connection_struct *conn)
321 struct dptr_struct *dptr;
322 for(dptr = dirptrs; dptr; dptr = dptr->next) {
323 if (dptr->conn == conn && dptr->dir_hnd)
328 /****************************************************************************
329 Close a dptr that matches a given path, only if it matches the spid also.
330 ****************************************************************************/
332 void dptr_closepath(char *path,uint16 spid)
334 struct dptr_struct *dptr, *next;
335 for(dptr = dirptrs; dptr; dptr = next) {
337 if (spid == dptr->spid && strequal(dptr->path,path))
338 dptr_close_internal(dptr);
342 /****************************************************************************
343 Try and close the oldest handle not marked for
344 expect close in the hope that the client has
345 finished with that one.
346 ****************************************************************************/
348 static void dptr_close_oldest(bool old)
350 struct dptr_struct *dptr;
353 * Go to the end of the list.
355 for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
359 DEBUG(0,("No old dptrs available to close oldest ?\n"));
364 * If 'old' is true, close the oldest oldhandle dnum (ie. 1 < dnum < 256) that
365 * does not have expect_close set. If 'old' is false, close
366 * one of the new dnum handles.
369 for(; dptr; dptr = dptr->prev) {
370 if ((old && (dptr->dnum < 256) && !dptr->expect_close) ||
371 (!old && (dptr->dnum > 255))) {
372 dptr_close_internal(dptr);
378 /****************************************************************************
379 Create a new dir ptr. If the flag old_handle is true then we must allocate
380 from the bitmap range 0 - 255 as old SMBsearch directory handles are only
381 one byte long. If old_handle is false we allocate from the range
382 256 - MAX_DIRECTORY_HANDLES. We bias the number we return by 1 to ensure
383 a directory handle is never zero.
384 wcard must not be zero.
385 ****************************************************************************/
387 NTSTATUS dptr_create(connection_struct *conn, const char *path, bool old_handle, bool expect_close,uint16 spid,
388 const char *wcard, bool wcard_has_wild, uint32 attr, struct dptr_struct **dptr_ret)
390 struct dptr_struct *dptr = NULL;
391 struct smb_Dir *dir_hnd;
394 DEBUG(5,("dptr_create dir=%s\n", path));
397 return NT_STATUS_INVALID_PARAMETER;
400 status = check_name(conn,path);
401 if (!NT_STATUS_IS_OK(status)) {
405 dir_hnd = OpenDir(NULL, conn, path, wcard, attr);
407 return map_nt_error_from_unix(errno);
410 string_set(&conn->dirpath,path);
412 if (dirhandles_open >= MAX_OPEN_DIRECTORIES) {
416 dptr = SMB_MALLOC_P(struct dptr_struct);
418 DEBUG(0,("malloc fail in dptr_create.\n"));
419 TALLOC_FREE(dir_hnd);
420 return NT_STATUS_NO_MEMORY;
428 * This is an old-style SMBsearch request. Ensure the
429 * value we return will fit in the range 1-255.
432 dptr->dnum = bitmap_find(dptr_bmap, 0);
434 if(dptr->dnum == -1 || dptr->dnum > 254) {
437 * Try and close the oldest handle not marked for
438 * expect close in the hope that the client has
439 * finished with that one.
442 dptr_close_oldest(True);
444 /* Now try again... */
445 dptr->dnum = bitmap_find(dptr_bmap, 0);
446 if(dptr->dnum == -1 || dptr->dnum > 254) {
447 DEBUG(0,("dptr_create: returned %d: Error - all old dirptrs in use ?\n", dptr->dnum));
449 TALLOC_FREE(dir_hnd);
450 return NT_STATUS_TOO_MANY_OPENED_FILES;
456 * This is a new-style trans2 request. Allocate from
457 * a range that will return 256 - MAX_DIRECTORY_HANDLES.
460 dptr->dnum = bitmap_find(dptr_bmap, 255);
462 if(dptr->dnum == -1 || dptr->dnum < 255) {
465 * Try and close the oldest handle close in the hope that
466 * the client has finished with that one. This will only
467 * happen in the case of the Win98 client bug where it leaks
471 dptr_close_oldest(False);
473 /* Now try again... */
474 dptr->dnum = bitmap_find(dptr_bmap, 255);
476 if(dptr->dnum == -1 || dptr->dnum < 255) {
477 DEBUG(0,("dptr_create: returned %d: Error - all new dirptrs in use ?\n", dptr->dnum));
479 TALLOC_FREE(dir_hnd);
480 return NT_STATUS_TOO_MANY_OPENED_FILES;
485 bitmap_set(dptr_bmap, dptr->dnum);
487 dptr->dnum += 1; /* Always bias the dnum by one - no zero dnums allowed. */
489 string_set(&dptr->path,path);
491 dptr->dir_hnd = dir_hnd;
493 dptr->expect_close = expect_close;
494 dptr->wcard = SMB_STRDUP(wcard);
496 bitmap_clear(dptr_bmap, dptr->dnum - 1);
498 TALLOC_FREE(dir_hnd);
499 return NT_STATUS_NO_MEMORY;
501 if (lp_posix_pathnames() || (wcard[0] == '.' && wcard[1] == 0)) {
502 dptr->has_wild = True;
504 dptr->has_wild = wcard_has_wild;
509 DLIST_ADD(dirptrs, dptr);
511 DEBUG(3,("creating new dirptr %d for path %s, expect_close = %d\n",
512 dptr->dnum,path,expect_close));
520 /****************************************************************************
521 Wrapper functions to access the lower level directory handles.
522 ****************************************************************************/
524 int dptr_CloseDir(struct dptr_struct *dptr)
526 DLIST_REMOVE(dirptrs, dptr);
527 TALLOC_FREE(dptr->dir_hnd);
531 void dptr_SeekDir(struct dptr_struct *dptr, long offset)
533 SeekDir(dptr->dir_hnd, offset);
536 long dptr_TellDir(struct dptr_struct *dptr)
538 return TellDir(dptr->dir_hnd);
541 bool dptr_has_wild(struct dptr_struct *dptr)
543 return dptr->has_wild;
546 int dptr_dnum(struct dptr_struct *dptr)
551 /****************************************************************************
552 Return the next visible file name, skipping veto'd and invisible files.
553 ****************************************************************************/
555 static const char *dptr_normal_ReadDirName(struct dptr_struct *dptr,
556 long *poffset, SMB_STRUCT_STAT *pst)
558 /* Normal search for the next file. */
560 while ((name = ReadDirName(dptr->dir_hnd, poffset, pst)) != NULL) {
561 if (is_visible_file(dptr->conn, dptr->path, name, pst, True)) {
568 /****************************************************************************
569 Return the next visible file name, skipping veto'd and invisible files.
570 ****************************************************************************/
572 const char *dptr_ReadDirName(TALLOC_CTX *ctx,
573 struct dptr_struct *dptr,
575 SMB_STRUCT_STAT *pst)
578 char *pathreal = NULL;
579 char *found_name = NULL;
582 SET_STAT_INVALID(*pst);
584 if (dptr->has_wild || dptr->did_stat) {
585 return dptr_normal_ReadDirName(dptr, poffset, pst);
588 /* If poffset is -1 then we know we returned this name before and we
589 * have no wildcards. We're at the end of the directory. */
590 if (*poffset == END_OF_DIRECTORY_OFFSET) {
594 /* We know the stored wcard contains no wildcard characters.
595 * See if we can match with a stat call. If we can't, then set
596 * did_stat to true to ensure we only do this once and keep
599 dptr->did_stat = true;
601 /* First check if it should be visible. */
602 if (!is_visible_file(dptr->conn, dptr->path, dptr->wcard,
605 /* This only returns false if the file was found, but
606 is explicitly not visible. Set us to end of
607 directory, but return NULL as we know we can't ever
612 if (VALID_STAT(*pst)) {
617 pathreal = talloc_asprintf(ctx,
624 if (SMB_VFS_STAT(dptr->conn, pathreal, pst) == 0) {
628 /* If we get any other error than ENOENT or ENOTDIR
629 then the file exists we just can't stat it. */
630 if (errno != ENOENT && errno != ENOTDIR) {
636 /* Stat failed. We know this is authoratiative if we are
637 * providing case sensitive semantics or the underlying
638 * filesystem is case sensitive.
640 if (dptr->conn->case_sensitive ||
641 !(dptr->conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH))
647 * Try case-insensitive stat if the fs has the ability. This avoids
648 * scanning the whole directory.
650 ret = SMB_VFS_GET_REAL_FILENAME(dptr->conn, dptr->path, dptr->wcard,
655 } else if (errno == ENOENT) {
656 /* The case-insensitive lookup was authoritative. */
660 TALLOC_FREE(pathreal);
662 return dptr_normal_ReadDirName(dptr, poffset, pst);
665 TALLOC_FREE(pathreal);
667 /* We need to set the underlying dir_hnd offset to -1
668 * also as this function is usually called with the
669 * output from TellDir. */
670 dptr->dir_hnd->offset = *poffset = END_OF_DIRECTORY_OFFSET;
674 /****************************************************************************
675 Search for a file by name, skipping veto'ed and not visible files.
676 ****************************************************************************/
678 bool dptr_SearchDir(struct dptr_struct *dptr, const char *name, long *poffset, SMB_STRUCT_STAT *pst)
680 SET_STAT_INVALID(*pst);
682 if (!dptr->has_wild && (dptr->dir_hnd->offset == END_OF_DIRECTORY_OFFSET)) {
683 /* This is a singleton directory and we're already at the end. */
684 *poffset = END_OF_DIRECTORY_OFFSET;
688 return SearchDir(dptr->dir_hnd, name, poffset);
691 /****************************************************************************
692 Add the name we're returning into the underlying cache.
693 ****************************************************************************/
695 void dptr_DirCacheAdd(struct dptr_struct *dptr, const char *name, long offset)
697 DirCacheAdd(dptr->dir_hnd, name, offset);
700 /****************************************************************************
701 Initialize variables & state data at the beginning of all search SMB requests.
702 ****************************************************************************/
703 void dptr_init_search_op(struct dptr_struct *dptr)
705 SMB_VFS_INIT_SEARCH_OP(dptr->conn, dptr->dir_hnd->dir);
708 /****************************************************************************
709 Fill the 5 byte server reserved dptr field.
710 ****************************************************************************/
712 bool dptr_fill(char *buf1,unsigned int key)
714 unsigned char *buf = (unsigned char *)buf1;
715 struct dptr_struct *dptr = dptr_get(key, False);
718 DEBUG(1,("filling null dirptr %d\n",key));
721 offset = (uint32)TellDir(dptr->dir_hnd);
722 DEBUG(6,("fill on key %u dirptr 0x%lx now at %d\n",key,
723 (long)dptr->dir_hnd,(int)offset));
729 /****************************************************************************
730 Fetch the dir ptr and seek it given the 5 byte server field.
731 ****************************************************************************/
733 struct dptr_struct *dptr_fetch(char *buf,int *num)
735 unsigned int key = *(unsigned char *)buf;
736 struct dptr_struct *dptr = dptr_get(key, False);
741 DEBUG(3,("fetched null dirptr %d\n",key));
745 offset = IVAL(buf,1);
746 if (offset == (uint32)-1) {
747 seekoff = END_OF_DIRECTORY_OFFSET;
749 seekoff = (long)offset;
751 SeekDir(dptr->dir_hnd,seekoff);
752 DEBUG(3,("fetching dirptr %d for path %s at offset %d\n",
753 key,dptr_path(key),(int)seekoff));
757 /****************************************************************************
759 ****************************************************************************/
761 struct dptr_struct *dptr_fetch_lanman2(int dptr_num)
763 struct dptr_struct *dptr = dptr_get(dptr_num, False);
766 DEBUG(3,("fetched null dirptr %d\n",dptr_num));
769 DEBUG(3,("fetching dirptr %d for path %s\n",dptr_num,dptr_path(dptr_num)));
773 /****************************************************************************
774 Check that a file matches a particular file type.
775 ****************************************************************************/
777 bool dir_check_ftype(connection_struct *conn, uint32 mode, uint32 dirtype)
781 /* Check the "may have" search bits. */
782 if (((mode & ~dirtype) & (aHIDDEN | aSYSTEM | aDIR)) != 0)
785 /* Check the "must have" bits, which are the may have bits shifted eight */
786 /* If must have bit is set, the file/dir can not be returned in search unless the matching
787 file attribute is set */
788 mask = ((dirtype >> 8) & (aDIR|aARCH|aRONLY|aHIDDEN|aSYSTEM)); /* & 0x37 */
790 if((mask & (mode & (aDIR|aARCH|aRONLY|aHIDDEN|aSYSTEM))) == mask) /* check if matching attribute present */
799 static bool mangle_mask_match(connection_struct *conn,
800 const char *filename,
805 if (!name_to_8_3(filename,mname,False,conn->params)) {
808 return mask_match_search(mname,mask,False);
811 /****************************************************************************
812 Get an 8.3 directory entry.
813 ****************************************************************************/
815 bool get_dir_entry(TALLOC_CTX *ctx,
816 connection_struct *conn,
826 const char *dname = NULL;
828 SMB_STRUCT_STAT sbuf;
829 char *pathreal = NULL;
830 const char *filename = NULL;
833 *pp_fname_out = NULL;
835 needslash = ( conn->dirpath[strlen(conn->dirpath) -1] != '/');
842 long curoff = dptr_TellDir(conn->dirptr);
843 dname = dptr_ReadDirName(ctx, conn->dirptr, &curoff, &sbuf);
845 DEBUG(6,("readdir on dirptr 0x%lx now at offset %ld\n",
846 (long)conn->dirptr,TellDir(conn->dirptr->dir_hnd)));
854 /* notice the special *.* handling. This appears to be the only difference
855 between the wildcard handling in this routine and in the trans2 routines.
856 see masktest for a demo
858 if ((strcmp(mask,"*.*") == 0) ||
859 mask_match_search(filename,mask,False) ||
860 mangle_mask_match(conn,filename,mask)) {
863 if (!mangle_is_8_3(filename, False, conn->params)) {
864 if (!name_to_8_3(filename,mname,False,
872 pathreal = talloc_asprintf(ctx,
877 pathreal = talloc_asprintf(ctx,
886 if (!VALID_STAT(sbuf) && (SMB_VFS_STAT(conn, pathreal, &sbuf)) != 0) {
887 DEBUG(5,("Couldn't stat 1 [%s]. Error = %s\n",
888 pathreal, strerror(errno) ));
889 TALLOC_FREE(pathreal);
893 *mode = dos_mode(conn,pathreal,&sbuf);
895 if (!dir_check_ftype(conn,*mode,dirtype)) {
896 DEBUG(5,("[%s] attribs 0x%x didn't match 0x%x\n",filename,(unsigned int)*mode,(unsigned int)dirtype));
897 TALLOC_FREE(pathreal);
901 *size = sbuf.st_size;
902 *date = sbuf.st_mtime;
905 struct timespec write_time_ts;
906 struct file_id fileid;
908 fileid = vfs_file_id_from_sbuf(conn, &sbuf);
909 get_file_infos(fileid, NULL, &write_time_ts);
910 if (!null_timespec(write_time_ts)) {
911 *date = convert_timespec_to_time_t(write_time_ts);
915 DEBUG(3,("get_dir_entry mask=[%s] found %s "
924 *pp_fname_out = talloc_strdup(ctx, filename);
925 if (!*pp_fname_out) {
929 DirCacheAdd(conn->dirptr->dir_hnd, dname, curoff);
930 TALLOC_FREE(pathreal);
937 /*******************************************************************
938 Check to see if a user can read a file. This is only approximate,
939 it is used as part of the "hide unreadable" option. Don't
940 use it for anything security sensitive.
941 ********************************************************************/
943 static bool user_can_read_file(connection_struct *conn, char *name)
946 * If user is a member of the Admin group
947 * we never hide files from them.
950 if (conn->admin_user) {
954 return can_access_file_acl(conn, name, FILE_READ_DATA);
957 /*******************************************************************
958 Check to see if a user can write a file (and only files, we do not
959 check dirs on this one). This is only approximate,
960 it is used as part of the "hide unwriteable" option. Don't
961 use it for anything security sensitive.
962 ********************************************************************/
964 static bool user_can_write_file(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
967 * If user is a member of the Admin group
968 * we never hide files from them.
971 if (conn->admin_user) {
975 SMB_ASSERT(VALID_STAT(*pst));
977 /* Pseudo-open the file */
979 if(S_ISDIR(pst->st_mode)) {
983 return can_write_to_file(conn, name, pst);
986 /*******************************************************************
987 Is a file a "special" type ?
988 ********************************************************************/
990 static bool file_is_special(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
993 * If user is a member of the Admin group
994 * we never hide files from them.
997 if (conn->admin_user)
1000 SMB_ASSERT(VALID_STAT(*pst));
1002 if (S_ISREG(pst->st_mode) || S_ISDIR(pst->st_mode) || S_ISLNK(pst->st_mode))
1008 /*******************************************************************
1009 Should the file be seen by the client?
1010 NOTE: A successful return is no guarantee of the file's existence.
1011 ********************************************************************/
1013 bool is_visible_file(connection_struct *conn, const char *dir_path,
1014 const char *name, SMB_STRUCT_STAT *pst, bool use_veto)
1016 bool hide_unreadable = lp_hideunreadable(SNUM(conn));
1017 bool hide_unwriteable = lp_hideunwriteable_files(SNUM(conn));
1018 bool hide_special = lp_hide_special_files(SNUM(conn));
1020 if ((strcmp(".",name) == 0) || (strcmp("..",name) == 0)) {
1021 return True; /* . and .. are always visible. */
1024 /* If it's a vetoed file, pretend it doesn't even exist */
1025 if (use_veto && IS_VETO_PATH(conn, name)) {
1026 DEBUG(10,("is_visible_file: file %s is vetoed.\n", name ));
1030 if (hide_unreadable || hide_unwriteable || hide_special) {
1033 if (asprintf(&entry, "%s/%s", dir_path, name) == -1) {
1037 /* If it's a dfs symlink, ignore _hide xxxx_ options */
1038 if (lp_host_msdfs() &&
1039 lp_msdfs_root(SNUM(conn)) &&
1040 is_msdfs_link(conn, entry, NULL)) {
1045 /* If the file name does not exist, there's no point checking
1046 * the configuration options. We succeed, on the basis that the
1047 * checks *might* have passed if the file was present.
1049 if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, entry, pst) != 0))
1055 /* Honour _hide unreadable_ option */
1056 if (hide_unreadable && !user_can_read_file(conn, entry)) {
1057 DEBUG(10,("is_visible_file: file %s is unreadable.\n",
1062 /* Honour _hide unwriteable_ option */
1063 if (hide_unwriteable && !user_can_write_file(conn, entry, pst)) {
1064 DEBUG(10,("is_visible_file: file %s is unwritable.\n",
1069 /* Honour _hide_special_ option */
1070 if (hide_special && file_is_special(conn, entry, pst)) {
1071 DEBUG(10,("is_visible_file: file %s is special.\n",
1081 static int smb_Dir_destructor(struct smb_Dir *dirp)
1084 SMB_VFS_CLOSEDIR(dirp->conn,dirp->dir);
1090 /*******************************************************************
1092 ********************************************************************/
1094 struct smb_Dir *OpenDir(TALLOC_CTX *mem_ctx, connection_struct *conn,
1095 const char *name, const char *mask, uint32 attr)
1097 struct smb_Dir *dirp = TALLOC_ZERO_P(mem_ctx, struct smb_Dir);
1104 dirp->name_cache_size = lp_directory_name_cache_size(SNUM(conn));
1106 dirp->dir_path = talloc_strdup(dirp, name);
1107 if (!dirp->dir_path) {
1113 talloc_set_destructor(dirp, smb_Dir_destructor);
1115 dirp->dir = SMB_VFS_OPENDIR(conn, dirp->dir_path, mask, attr);
1117 DEBUG(5,("OpenDir: Can't open %s. %s\n", dirp->dir_path,
1129 /*******************************************************************
1130 Read from a directory.
1131 Return directory entry, current offset, and optional stat information.
1132 Don't check for veto or invisible files.
1133 ********************************************************************/
1135 const char *ReadDirName(struct smb_Dir *dirp, long *poffset,
1136 SMB_STRUCT_STAT *sbuf)
1139 connection_struct *conn = dirp->conn;
1141 /* Cheat to allow . and .. to be the first entries returned. */
1142 if (((*poffset == START_OF_DIRECTORY_OFFSET) ||
1143 (*poffset == DOT_DOT_DIRECTORY_OFFSET)) && (dirp->file_number < 2))
1145 if (dirp->file_number == 0) {
1147 *poffset = dirp->offset = START_OF_DIRECTORY_OFFSET;
1149 *poffset = dirp->offset = DOT_DOT_DIRECTORY_OFFSET;
1152 dirp->file_number++;
1154 } else if (*poffset == END_OF_DIRECTORY_OFFSET) {
1155 *poffset = dirp->offset = END_OF_DIRECTORY_OFFSET;
1158 /* A real offset, seek to it. */
1159 SeekDir(dirp, *poffset);
1162 while ((n = vfs_readdirname(conn, dirp->dir, sbuf))) {
1163 /* Ignore . and .. - we've already returned them. */
1165 if ((n[1] == '\0') || (n[1] == '.' && n[2] == '\0')) {
1169 *poffset = dirp->offset = SMB_VFS_TELLDIR(conn, dirp->dir);
1170 dirp->file_number++;
1173 *poffset = dirp->offset = END_OF_DIRECTORY_OFFSET;
1177 /*******************************************************************
1178 Rewind to the start.
1179 ********************************************************************/
1181 void RewindDir(struct smb_Dir *dirp, long *poffset)
1183 SMB_VFS_REWINDDIR(dirp->conn, dirp->dir);
1184 dirp->file_number = 0;
1185 dirp->offset = START_OF_DIRECTORY_OFFSET;
1186 *poffset = START_OF_DIRECTORY_OFFSET;
1189 /*******************************************************************
1191 ********************************************************************/
1193 void SeekDir(struct smb_Dir *dirp, long offset)
1195 if (offset != dirp->offset) {
1196 if (offset == START_OF_DIRECTORY_OFFSET) {
1197 RewindDir(dirp, &offset);
1199 * Ok we should really set the file number here
1200 * to 1 to enable ".." to be returned next. Trouble
1201 * is I'm worried about callers using SeekDir(dirp,0)
1202 * as equivalent to RewindDir(). So leave this alone
1205 } else if (offset == DOT_DOT_DIRECTORY_OFFSET) {
1206 RewindDir(dirp, &offset);
1208 * Set the file number to 2 - we want to get the first
1209 * real file entry (the one we return after "..")
1210 * on the next ReadDir.
1212 dirp->file_number = 2;
1213 } else if (offset == END_OF_DIRECTORY_OFFSET) {
1214 ; /* Don't seek in this case. */
1216 SMB_VFS_SEEKDIR(dirp->conn, dirp->dir, offset);
1218 dirp->offset = offset;
1222 /*******************************************************************
1223 Tell a dir position.
1224 ********************************************************************/
1226 long TellDir(struct smb_Dir *dirp)
1228 return(dirp->offset);
1231 /*******************************************************************
1232 Add an entry into the dcache.
1233 ********************************************************************/
1235 void DirCacheAdd(struct smb_Dir *dirp, const char *name, long offset)
1237 struct name_cache_entry *e;
1239 if (dirp->name_cache_size == 0) {
1243 if (dirp->name_cache == NULL) {
1244 dirp->name_cache = TALLOC_ZERO_ARRAY(
1245 dirp, struct name_cache_entry, dirp->name_cache_size);
1247 if (dirp->name_cache == NULL) {
1252 dirp->name_cache_index = (dirp->name_cache_index+1) %
1253 dirp->name_cache_size;
1254 e = &dirp->name_cache[dirp->name_cache_index];
1255 TALLOC_FREE(e->name);
1256 e->name = talloc_strdup(dirp, name);
1260 /*******************************************************************
1261 Find an entry by name. Leave us at the offset after it.
1262 Don't check for veto or invisible files.
1263 ********************************************************************/
1265 bool SearchDir(struct smb_Dir *dirp, const char *name, long *poffset)
1269 connection_struct *conn = dirp->conn;
1271 /* Search back in the name cache. */
1272 if (dirp->name_cache_size && dirp->name_cache) {
1273 for (i = dirp->name_cache_index; i >= 0; i--) {
1274 struct name_cache_entry *e = &dirp->name_cache[i];
1275 if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
1276 *poffset = e->offset;
1277 SeekDir(dirp, e->offset);
1281 for (i = dirp->name_cache_size - 1; i > dirp->name_cache_index; i--) {
1282 struct name_cache_entry *e = &dirp->name_cache[i];
1283 if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
1284 *poffset = e->offset;
1285 SeekDir(dirp, e->offset);
1291 /* Not found in the name cache. Rewind directory and start from scratch. */
1292 SMB_VFS_REWINDDIR(conn, dirp->dir);
1293 dirp->file_number = 0;
1294 *poffset = START_OF_DIRECTORY_OFFSET;
1295 while ((entry = ReadDirName(dirp, poffset, NULL))) {
1296 if (conn->case_sensitive ? (strcmp(entry, name) == 0) : strequal(entry, name)) {
1303 /*****************************************************************
1304 Is this directory empty ?
1305 *****************************************************************/
1307 NTSTATUS can_delete_directory(struct connection_struct *conn,
1308 const char *dirname)
1310 NTSTATUS status = NT_STATUS_OK;
1314 struct smb_Dir *dir_hnd = OpenDir(talloc_tos(), conn, dirname,
1318 return map_nt_error_from_unix(errno);
1321 while ((dname = ReadDirName(dir_hnd, &dirpos, &st))) {
1322 /* Quick check for "." and ".." */
1323 if (dname[0] == '.') {
1324 if (!dname[1] || (dname[1] == '.' && !dname[2])) {
1329 if (!is_visible_file(conn, dirname, dname, &st, True)) {
1333 DEBUG(10,("can_delete_directory: got name %s - can't delete\n",
1335 status = NT_STATUS_DIRECTORY_NOT_EMPTY;
1338 TALLOC_FREE(dir_hnd);