2 Unix SMB/Netbios implementation.
4 VFS initialisation and support functions
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002
7 Copyright (C) James Peach 2006
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program 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 the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 This work was sponsored by Optifacio Software Services, Inc.
29 #define DBGC_CLASS DBGC_VFS
33 struct vfs_init_function_entry {
35 vfs_op_tuple *vfs_op_tuples;
36 struct vfs_init_function_entry *prev, *next;
39 static struct vfs_init_function_entry *backends = NULL;
41 /****************************************************************************
42 maintain the list of available backends
43 ****************************************************************************/
45 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
47 struct vfs_init_function_entry *entry = backends;
50 if (strcmp(entry->name, name)==0) return entry;
57 NTSTATUS smb_register_vfs(int version, const char *name, vfs_op_tuple *vfs_op_tuples)
59 struct vfs_init_function_entry *entry = backends;
61 if ((version != SMB_VFS_INTERFACE_VERSION)) {
62 DEBUG(0, ("Failed to register vfs module.\n"
63 "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
64 "current SMB_VFS_INTERFACE_VERSION is %d.\n"
65 "Please recompile against the current Samba Version!\n",
66 version, SMB_VFS_INTERFACE_VERSION));
67 return NT_STATUS_OBJECT_TYPE_MISMATCH;
70 if (!name || !name[0] || !vfs_op_tuples) {
71 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
72 return NT_STATUS_INVALID_PARAMETER;
75 if (vfs_find_backend_entry(name)) {
76 DEBUG(0,("VFS module %s already loaded!\n", name));
77 return NT_STATUS_OBJECT_NAME_COLLISION;
80 entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
81 entry->name = smb_xstrdup(name);
82 entry->vfs_op_tuples = vfs_op_tuples;
84 DLIST_ADD(backends, entry);
85 DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
89 /****************************************************************************
90 initialise default vfs hooks
91 ****************************************************************************/
93 static void vfs_init_default(connection_struct *conn)
95 DEBUG(3, ("Initialising default vfs hooks\n"));
96 vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
99 /****************************************************************************
100 initialise custom vfs hooks
101 ****************************************************************************/
103 static inline void vfs_set_operation(struct vfs_ops * vfs, vfs_op_type which,
104 struct vfs_handle_struct * handle, void * op)
106 ((struct vfs_handle_struct **)&vfs->handles)[which] = handle;
107 ((void**)&vfs->ops)[which] = op;
110 BOOL vfs_init_custom(connection_struct *conn, const char *vfs_object)
113 char *module_name = NULL;
114 char *module_param = NULL, *p;
116 vfs_handle_struct *handle;
117 struct vfs_init_function_entry *entry;
119 if (!conn||!vfs_object||!vfs_object[0]) {
120 DEBUG(0,("vfs_init_custon() called with NULL pointer or emtpy vfs_object!\n"));
128 DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
130 module_name = smb_xstrdup(vfs_object);
132 p = strchr_m(module_name, ':');
137 trim_char(module_param, ' ', ' ');
140 trim_char(module_name, ' ', ' ');
142 /* First, try to load the module with the new module system */
143 if((entry = vfs_find_backend_entry(module_name)) ||
144 (NT_STATUS_IS_OK(smb_probe_module("vfs", module_name)) &&
145 (entry = vfs_find_backend_entry(module_name)))) {
147 DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
149 if ((ops = entry->vfs_op_tuples) == NULL) {
150 DEBUG(0, ("entry->vfs_op_tuples==NULL for [%s] failed\n", vfs_object));
151 SAFE_FREE(module_name);
155 DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
156 SAFE_FREE(module_name);
160 handle = TALLOC_ZERO_P(conn->mem_ctx,vfs_handle_struct);
162 DEBUG(0,("talloc_zero() failed!\n"));
163 SAFE_FREE(module_name);
166 memcpy(&handle->vfs_next, &conn->vfs, sizeof(struct vfs_ops));
169 handle->param = talloc_strdup(conn->mem_ctx, module_param);
171 DLIST_ADD(conn->vfs_handles, handle);
173 for(i=0; ops[i].op != NULL; i++) {
174 DEBUG(5, ("Checking operation #%d (type %d, layer %d)\n", i, ops[i].type, ops[i].layer));
175 if(ops[i].layer == SMB_VFS_LAYER_OPAQUE) {
176 /* If this operation was already made opaque by different module, it
177 * will be overridded here.
179 DEBUGADD(5, ("Making operation type %d opaque [module %s]\n", ops[i].type, vfs_object));
180 vfs_set_operation(&conn->vfs_opaque, ops[i].type, handle, ops[i].op);
182 /* Change current VFS disposition*/
183 DEBUGADD(5, ("Accepting operation type %d from module %s\n", ops[i].type, vfs_object));
184 vfs_set_operation(&conn->vfs, ops[i].type, handle, ops[i].op);
187 SAFE_FREE(module_name);
191 /*****************************************************************
192 Allow VFS modules to extend files_struct with VFS-specific state.
193 This will be ok for small numbers of extensions, but might need to
194 be refactored if it becomes more widely used.
195 ******************************************************************/
197 #define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))
199 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle, files_struct *fsp, size_t ext_size)
201 struct vfs_fsp_data *ext;
204 /* Prevent VFS modules adding multiple extensions. */
205 if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
209 ext = TALLOC_ZERO(handle->conn->mem_ctx,
210 sizeof(struct vfs_fsp_data) + ext_size);
216 ext->next = fsp->vfs_extension;
217 fsp->vfs_extension = ext;
218 return EXT_DATA_AREA(ext);
221 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
223 struct vfs_fsp_data *curr;
224 struct vfs_fsp_data *prev;
226 for (curr = fsp->vfs_extension, prev = NULL;
228 prev = curr, curr = curr->next) {
229 if (curr->owner == handle) {
231 prev->next = curr->next;
233 fsp->vfs_extension = curr->next;
241 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
243 struct vfs_fsp_data *head;
245 for (head = fsp->vfs_extension; head; head = head->next) {
246 if (head->owner == handle) {
247 return EXT_DATA_AREA(head);
256 /*****************************************************************
258 ******************************************************************/
260 BOOL smbd_vfs_init(connection_struct *conn)
262 const char **vfs_objects;
266 /* Normal share - initialise with disk access functions */
267 vfs_init_default(conn);
268 vfs_objects = lp_vfs_objects(SNUM(conn));
270 /* Override VFS functions if 'vfs object' was not specified*/
271 if (!vfs_objects || !vfs_objects[0])
274 for (i=0; vfs_objects[i] ;) {
278 for (j=i-1; j >= 0; j--) {
279 if (!vfs_init_custom(conn, vfs_objects[j])) {
280 DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
287 /*******************************************************************
288 Check if directory exists.
289 ********************************************************************/
291 BOOL vfs_directory_exist(connection_struct *conn, const char *dname, SMB_STRUCT_STAT *st)
299 if (SMB_VFS_STAT(conn,dname,st) != 0)
302 ret = S_ISDIR(st->st_mode);
309 /*******************************************************************
311 ********************************************************************/
313 int vfs_MkDir(connection_struct *conn, const char *name, mode_t mode)
316 SMB_STRUCT_STAT sbuf;
318 if(!(ret=SMB_VFS_MKDIR(conn, name, mode))) {
320 inherit_access_acl(conn, name, mode);
323 * Check if high bits should have been set,
324 * then (if bits are missing): add them.
325 * Consider bits automagically set by UNIX, i.e. SGID bit from parent dir.
327 if(mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) &&
328 !SMB_VFS_STAT(conn,name,&sbuf) && (mode & ~sbuf.st_mode))
329 SMB_VFS_CHMOD(conn,name,sbuf.st_mode | (mode & ~sbuf.st_mode));
334 /*******************************************************************
335 Check if an object exists in the vfs.
336 ********************************************************************/
338 BOOL vfs_object_exist(connection_struct *conn,const char *fname,SMB_STRUCT_STAT *sbuf)
347 if (SMB_VFS_STAT(conn,fname,sbuf) == -1)
352 /*******************************************************************
353 Check if a file exists in the vfs.
354 ********************************************************************/
356 BOOL vfs_file_exist(connection_struct *conn, const char *fname,SMB_STRUCT_STAT *sbuf)
365 if (SMB_VFS_STAT(conn,fname,sbuf) == -1)
367 return(S_ISREG(sbuf->st_mode));
370 /****************************************************************************
371 Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
372 ****************************************************************************/
374 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
378 while (total < byte_count)
380 ssize_t ret = SMB_VFS_READ(fsp, fsp->fh->fd, buf + total,
383 if (ret == 0) return total;
392 return (ssize_t)total;
395 ssize_t vfs_pread_data(files_struct *fsp, char *buf,
396 size_t byte_count, SMB_OFF_T offset)
400 while (total < byte_count)
402 ssize_t ret = SMB_VFS_PREAD(fsp, fsp->fh->fd, buf + total,
403 byte_count - total, offset + total);
405 if (ret == 0) return total;
414 return (ssize_t)total;
417 /****************************************************************************
418 Write data to a fd on the vfs.
419 ****************************************************************************/
421 ssize_t vfs_write_data(files_struct *fsp,const char *buffer,size_t N)
427 ret = SMB_VFS_WRITE(fsp,fsp->fh->fd,buffer + total,N - total);
436 return (ssize_t)total;
439 ssize_t vfs_pwrite_data(files_struct *fsp,const char *buffer,
440 size_t N, SMB_OFF_T offset)
446 ret = SMB_VFS_PWRITE(fsp, fsp->fh->fd, buffer + total,
447 N - total, offset + total);
456 return (ssize_t)total;
458 /****************************************************************************
459 An allocate file space call using the vfs interface.
460 Allocates space for a file from a filedescriptor.
461 Returns 0 on success, -1 on failure.
462 ****************************************************************************/
464 int vfs_allocate_file_space(files_struct *fsp, SMB_BIG_UINT len)
468 connection_struct *conn = fsp->conn;
469 SMB_BIG_UINT space_avail;
470 SMB_BIG_UINT bsize,dfree,dsize;
472 release_level_2_oplocks_on_change(fsp);
475 * Actually try and commit the space on disk....
478 DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n", fsp->fsp_name, (double)len ));
480 if (((SMB_OFF_T)len) < 0) {
481 DEBUG(0,("vfs_allocate_file_space: %s negative len requested.\n", fsp->fsp_name ));
485 ret = SMB_VFS_FSTAT(fsp,fsp->fh->fd,&st);
489 if (len == (SMB_BIG_UINT)st.st_size)
492 if (len < (SMB_BIG_UINT)st.st_size) {
493 /* Shrink - use ftruncate. */
495 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current size %.0f\n",
496 fsp->fsp_name, (double)st.st_size ));
498 flush_write_cache(fsp, SIZECHANGE_FLUSH);
499 if ((ret = SMB_VFS_FTRUNCATE(fsp, fsp->fh->fd, (SMB_OFF_T)len)) != -1) {
500 set_filelen_write_cache(fsp, len);
505 /* Grow - we need to test if we have enough space. */
507 if (!lp_strict_allocate(SNUM(fsp->conn)))
511 len /= 1024; /* Len is now number of 1k blocks needed. */
512 space_avail = get_dfree_info(conn,fsp->fsp_name,False,&bsize,&dfree,&dsize);
513 if (space_avail == (SMB_BIG_UINT)-1) {
517 DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, needed blocks = %.0f, space avail = %.0f\n",
518 fsp->fsp_name, (double)st.st_size, (double)len, (double)space_avail ));
520 if (len > space_avail) {
528 /****************************************************************************
529 A vfs set_filelen call.
530 set the length of a file from a filedescriptor.
531 Returns 0 on success, -1 on failure.
532 ****************************************************************************/
534 int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
538 release_level_2_oplocks_on_change(fsp);
539 DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n", fsp->fsp_name, (double)len));
540 flush_write_cache(fsp, SIZECHANGE_FLUSH);
541 if ((ret = SMB_VFS_FTRUNCATE(fsp, fsp->fh->fd, len)) != -1)
542 set_filelen_write_cache(fsp, len);
547 /****************************************************************************
548 A vfs fill sparse call.
549 Writes zeros from the end of file to len, if len is greater than EOF.
550 Used only by strict_sync.
551 Returns 0 on success, -1 on failure.
552 ****************************************************************************/
554 static char *sparse_buf;
555 #define SPARSE_BUF_WRITE_SIZE (32*1024)
557 int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
566 release_level_2_oplocks_on_change(fsp);
567 ret = SMB_VFS_FSTAT(fsp,fsp->fh->fd,&st);
572 if (len <= st.st_size) {
576 DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to len %.0f (%.0f bytes)\n",
577 fsp->fsp_name, (double)st.st_size, (double)len, (double)(len - st.st_size)));
579 flush_write_cache(fsp, SIZECHANGE_FLUSH);
582 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
590 num_to_write = len - st.st_size;
593 while (total < num_to_write) {
594 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (num_to_write - total));
596 pwrite_ret = SMB_VFS_PWRITE(fsp, fsp->fh->fd, sparse_buf, curr_write_size, offset + total);
597 if (pwrite_ret == -1) {
598 DEBUG(10,("vfs_fill_sparse: SMB_VFS_PWRITE for file %s failed with error %s\n",
599 fsp->fsp_name, strerror(errno) ));
602 if (pwrite_ret == 0) {
609 set_filelen_write_cache(fsp, len);
613 /****************************************************************************
614 Transfer some data (n bytes) between two file_struct's.
615 ****************************************************************************/
617 static files_struct *in_fsp;
618 static files_struct *out_fsp;
620 static ssize_t read_fn(int fd, void *buf, size_t len)
622 return SMB_VFS_READ(in_fsp, fd, buf, len);
625 static ssize_t write_fn(int fd, const void *buf, size_t len)
627 return SMB_VFS_WRITE(out_fsp, fd, buf, len);
630 SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
635 return transfer_file_internal(in_fsp->fh->fd, out_fsp->fh->fd, n, read_fn, write_fn);
638 /*******************************************************************
639 A vfs_readdir wrapper which just returns the file name.
640 ********************************************************************/
642 char *vfs_readdirname(connection_struct *conn, void *p)
644 SMB_STRUCT_DIRENT *ptr= NULL;
650 ptr = SMB_VFS_READDIR(conn,p);
661 #ifdef HAVE_BROKEN_READDIR_NAME
662 /* using /usr/ucb/cc is BAD */
669 /*******************************************************************
670 A wrapper for vfs_chdir().
671 ********************************************************************/
673 int vfs_ChDir(connection_struct *conn, const char *path)
676 static pstring LastDir="";
678 if (strcsequal(path,"."))
681 if (*path == '/' && strcsequal(LastDir,path))
684 DEBUG(4,("vfs_ChDir to %s\n",path));
686 res = SMB_VFS_CHDIR(conn,path);
688 pstrcpy(LastDir,path);
692 /* number of list structures for a caching GetWd function. */
693 #define MAX_GETWDCACHE (50)
696 SMB_DEV_T dev; /* These *must* be compatible with the types returned in a stat() call. */
697 SMB_INO_T inode; /* These *must* be compatible with the types returned in a stat() call. */
698 char *dos_path; /* The pathname in DOS format. */
700 } ino_list[MAX_GETWDCACHE];
702 extern BOOL use_getwd_cache;
704 /****************************************************************************
705 Prompte a ptr (to make it recently used)
706 ****************************************************************************/
708 static void array_promote(char *array,int elsize,int element)
714 p = (char *)SMB_MALLOC(elsize);
717 DEBUG(5,("array_promote: malloc fail\n"));
721 memcpy(p,array + element * elsize, elsize);
722 memmove(array + elsize,array,elsize*element);
723 memcpy(array,p,elsize);
727 /*******************************************************************
728 Return the absolute current directory path - given a UNIX pathname.
729 Note that this path is returned in DOS format, not UNIX
730 format. Note this can be called with conn == NULL.
731 ********************************************************************/
733 char *vfs_GetWd(connection_struct *conn, char *path)
736 static BOOL getwd_cache_init = False;
737 SMB_STRUCT_STAT st, st2;
742 if (!use_getwd_cache)
743 return(SMB_VFS_GETWD(conn,path));
746 if (!getwd_cache_init) {
747 getwd_cache_init = True;
748 for (i=0;i<MAX_GETWDCACHE;i++) {
749 string_set(&ino_list[i].dos_path,"");
750 ino_list[i].valid = False;
754 /* Get the inode of the current directory, if this doesn't work we're
757 if (SMB_VFS_STAT(conn, ".",&st) == -1) {
758 /* Known to fail for root: the directory may be
759 * NFS-mounted and exported with root_squash (so has no root access). */
760 DEBUG(1,("vfs_GetWd: couldn't stat \".\" path=%s error %s (NFS problem ?)\n", path, strerror(errno) ));
761 return(SMB_VFS_GETWD(conn,path));
765 for (i=0; i<MAX_GETWDCACHE; i++) {
766 if (ino_list[i].valid) {
768 /* If we have found an entry with a matching inode and dev number
769 then find the inode number for the directory in the cached string.
770 If this agrees with that returned by the stat for the current
771 directory then all is o.k. (but make sure it is a directory all
774 if (st.st_ino == ino_list[i].inode && st.st_dev == ino_list[i].dev) {
775 if (SMB_VFS_STAT(conn,ino_list[i].dos_path,&st2) == 0) {
776 if (st.st_ino == st2.st_ino && st.st_dev == st2.st_dev &&
777 (st2.st_mode & S_IFMT) == S_IFDIR) {
778 pstrcpy (path, ino_list[i].dos_path);
780 /* promote it for future use */
781 array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
784 /* If the inode is different then something's changed,
785 scrub the entry and start from scratch. */
786 ino_list[i].valid = False;
793 /* We don't have the information to hand so rely on traditional methods.
794 The very slow getcwd, which spawns a process on some systems, or the
795 not quite so bad getwd. */
797 if (!SMB_VFS_GETWD(conn,s)) {
798 DEBUG(0,("vfs_GetWd: SMB_VFS_GETWD call failed, errno %s\n",strerror(errno)));
804 DEBUG(5,("vfs_GetWd %s, inode %.0f, dev %.0f\n",s,(double)st.st_ino,(double)st.st_dev));
806 /* add it to the cache */
807 i = MAX_GETWDCACHE - 1;
808 string_set(&ino_list[i].dos_path,s);
809 ino_list[i].dev = st.st_dev;
810 ino_list[i].inode = st.st_ino;
811 ino_list[i].valid = True;
813 /* put it at the top of the list */
814 array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
819 BOOL canonicalize_path(connection_struct *conn, pstring path)
821 #ifdef REALPATH_TAKES_NULL
822 char *resolved_name = SMB_VFS_REALPATH(conn,path,NULL);
823 if (!resolved_name) {
826 pstrcpy(path, resolved_name);
827 SAFE_FREE(resolved_name);
831 char resolved_name_buf[PATH_MAX+1];
833 pstring resolved_name_buf;
835 char *resolved_name = SMB_VFS_REALPATH(conn,path,resolved_name_buf);
836 if (!resolved_name) {
839 pstrcpy(path, resolved_name);
841 #endif /* REALPATH_TAKES_NULL */
844 /*******************************************************************
845 Reduce a file name, removing .. elements and checking that
846 it is below dir in the heirachy. This uses realpath.
847 ********************************************************************/
849 BOOL reduce_name(connection_struct *conn, const pstring fname)
851 #ifdef REALPATH_TAKES_NULL
852 BOOL free_resolved_name = True;
855 char resolved_name_buf[PATH_MAX+1];
857 pstring resolved_name_buf;
859 BOOL free_resolved_name = False;
861 char *resolved_name = NULL;
862 size_t con_path_len = strlen(conn->connectpath);
864 int saved_errno = errno;
866 DEBUG(3,("reduce_name [%s] [%s]\n", fname, conn->connectpath));
868 #ifdef REALPATH_TAKES_NULL
869 resolved_name = SMB_VFS_REALPATH(conn,fname,NULL);
871 resolved_name = SMB_VFS_REALPATH(conn,fname,resolved_name_buf);
874 if (!resolved_name) {
877 DEBUG(3,("reduce_name: Component not a directory in getting realpath for %s\n", fname));
883 fstring last_component;
884 /* Last component didn't exist. Remove it and try and canonicalise the directory. */
886 pstrcpy(tmp_fname, fname);
887 p = strrchr_m(tmp_fname, '/');
890 fstrcpy(last_component, p);
892 fstrcpy(last_component, tmp_fname);
893 pstrcpy(tmp_fname, ".");
896 #ifdef REALPATH_TAKES_NULL
897 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,NULL);
899 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,resolved_name_buf);
901 if (!resolved_name) {
902 DEBUG(3,("reduce_name: couldn't get realpath for %s\n", fname));
906 pstrcpy(tmp_fname, resolved_name);
907 pstrcat(tmp_fname, "/");
908 pstrcat(tmp_fname, last_component);
909 #ifdef REALPATH_TAKES_NULL
910 SAFE_FREE(resolved_name);
911 resolved_name = SMB_STRDUP(tmp_fname);
912 if (!resolved_name) {
913 DEBUG(0,("reduce_name: malloc fail for %s\n", tmp_fname));
919 safe_strcpy(resolved_name_buf, tmp_fname, PATH_MAX);
921 pstrcpy(resolved_name_buf, tmp_fname);
923 resolved_name = resolved_name_buf;
928 DEBUG(1,("reduce_name: couldn't get realpath for %s\n", fname));
929 /* Don't restore the saved errno. We need to return the error that
930 realpath caused here as it was not one of the cases we handle. JRA. */
935 DEBUG(10,("reduce_name realpath [%s] -> [%s]\n", fname, resolved_name));
937 if (*resolved_name != '/') {
938 DEBUG(0,("reduce_name: realpath doesn't return absolute paths !\n"));
939 if (free_resolved_name)
940 SAFE_FREE(resolved_name);
945 /* Check for widelinks allowed. */
946 if (!lp_widelinks(SNUM(conn)) && (strncmp(conn->connectpath, resolved_name, con_path_len) != 0)) {
947 DEBUG(2, ("reduce_name: Bad access attempt: %s is a symlink outside the share path", fname));
948 if (free_resolved_name)
949 SAFE_FREE(resolved_name);
954 /* Check if we are allowing users to follow symlinks */
955 /* Patch from David Clerc <David.Clerc@cui.unige.ch>
956 University of Geneva */
959 if (!lp_symlinks(SNUM(conn))) {
960 SMB_STRUCT_STAT statbuf;
961 if ( (SMB_VFS_LSTAT(conn,fname,&statbuf) != -1) &&
962 (S_ISLNK(statbuf.st_mode)) ) {
963 if (free_resolved_name)
964 SAFE_FREE(resolved_name);
965 DEBUG(3,("reduce_name: denied: file path name %s is a symlink\n",resolved_name));
972 DEBUG(3,("reduce_name: %s reduced to %s\n", fname, resolved_name));
973 if (free_resolved_name)
974 SAFE_FREE(resolved_name);