2 * implementation of an Shadow Copy module
4 * Copyright (C) Stefan Metzmacher 2003-2004
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 3 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, see <http://www.gnu.org/licenses/>.
21 #include "smbd/smbd.h"
25 Please read the VFS module Samba-HowTo-Collection.
26 there's a chapter about this module
31 the ShadowCopies are in this directories
33 Z:\@GMT-2003.08.05-12.00.00\
34 Z:\@GMT-2003.08.05-12.01.00\
35 Z:\@GMT-2003.08.05-12.02.00\
40 Z:\@GMT-2003.08.05-12.02.00\testfile.txt
44 Z:\testdir\testfile.txt
45 Z:\@GMT-2003.08.05-12.02.00\testdir\testfile.txt
48 Note: Files must differ to be displayed via Windows Explorer!
49 Directories are always displayed...
52 static int vfs_shadow_copy_debug_level = DBGC_VFS;
55 #define DBGC_CLASS vfs_shadow_copy_debug_level
57 #define SHADOW_COPY_PREFIX "@GMT-"
58 #define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
66 static bool shadow_copy_match_name(const char *name)
68 if (strncmp(SHADOW_COPY_PREFIX,name, sizeof(SHADOW_COPY_PREFIX)-1)==0 &&
69 (strlen(SHADOW_COPY_SAMPLE) == strlen(name))) {
76 static DIR *shadow_copy_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
78 shadow_copy_Dir *dirp;
79 DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fname,mask,attr);
82 DEBUG(0,("shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fname));
86 dirp = SMB_MALLOC_P(shadow_copy_Dir);
88 DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
89 SMB_VFS_NEXT_CLOSEDIR(handle,p);
98 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
103 if (shadow_copy_match_name(d->d_name)) {
104 DEBUG(8,("shadow_copy_opendir: hide [%s]\n",d->d_name));
108 DEBUG(10,("shadow_copy_opendir: not hide [%s]\n",d->d_name));
110 dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,struct dirent, dirp->num+1);
112 DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
116 dirp->dirs[dirp->num++] = *d;
119 SMB_VFS_NEXT_CLOSEDIR(handle,p);
123 static DIR *shadow_copy_fdopendir(vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attr)
125 shadow_copy_Dir *dirp;
126 DIR *p = SMB_VFS_NEXT_FDOPENDIR(handle,fsp,mask,attr);
129 DEBUG(10,("shadow_copy_opendir: SMB_VFS_NEXT_FDOPENDIR() failed for [%s]\n",
130 smb_fname_str_dbg(fsp->fsp_name)));
134 dirp = SMB_MALLOC_P(shadow_copy_Dir);
136 DEBUG(0,("shadow_copy_fdopendir: Out of memory\n"));
137 SMB_VFS_NEXT_CLOSEDIR(handle,p);
138 /* We have now closed the fd in fsp. */
148 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
153 if (shadow_copy_match_name(d->d_name)) {
154 DEBUG(8,("shadow_copy_fdopendir: hide [%s]\n",d->d_name));
158 DEBUG(10,("shadow_copy_fdopendir: not hide [%s]\n",d->d_name));
160 dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,struct dirent, dirp->num+1);
162 DEBUG(0,("shadow_copy_fdopendir: Out of memory\n"));
166 dirp->dirs[dirp->num++] = *d;
169 SMB_VFS_NEXT_CLOSEDIR(handle,p);
170 /* We have now closed the fd in fsp. */
175 static struct dirent *shadow_copy_readdir(vfs_handle_struct *handle,
177 SMB_STRUCT_STAT *sbuf)
179 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
181 if (dirp->pos < dirp->num) {
182 return &(dirp->dirs[dirp->pos++]);
188 static void shadow_copy_seekdir(struct vfs_handle_struct *handle, DIR *_dirp, long offset)
190 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
192 if (offset < dirp->num) {
197 static long shadow_copy_telldir(struct vfs_handle_struct *handle, DIR *_dirp)
199 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
200 return( dirp->pos ) ;
203 static void shadow_copy_rewinddir(struct vfs_handle_struct *handle, DIR *_dirp)
205 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
209 static int shadow_copy_closedir(vfs_handle_struct *handle, DIR *_dirp)
211 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
213 SAFE_FREE(dirp->dirs);
219 static int shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle,
221 struct shadow_copy_data *shadow_copy_data,
224 DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fsp->conn->connectpath,NULL,0);
226 shadow_copy_data->num_volumes = 0;
227 shadow_copy_data->labels = NULL;
230 DEBUG(0,("shadow_copy_get_shadow_copy_data: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fsp->conn->connectpath));
235 SHADOW_COPY_LABEL *tlabels;
238 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
244 if (!shadow_copy_match_name(d->d_name)) {
245 DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore [%s]\n",d->d_name));
249 DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore [%s]\n",d->d_name));
252 shadow_copy_data->num_volumes++;
256 tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(shadow_copy_data,
257 shadow_copy_data->labels,
258 (shadow_copy_data->num_volumes+1)*sizeof(SHADOW_COPY_LABEL));
259 if (tlabels == NULL) {
260 DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of memory\n"));
261 SMB_VFS_NEXT_CLOSEDIR(handle,p);
265 snprintf(tlabels[shadow_copy_data->num_volumes++], sizeof(*tlabels), "%s",d->d_name);
267 shadow_copy_data->labels = tlabels;
270 SMB_VFS_NEXT_CLOSEDIR(handle,p);
274 static struct vfs_fn_pointers vfs_shadow_copy_fns = {
275 .opendir_fn = shadow_copy_opendir,
276 .fdopendir_fn = shadow_copy_fdopendir,
277 .readdir_fn = shadow_copy_readdir,
278 .seekdir_fn = shadow_copy_seekdir,
279 .telldir_fn = shadow_copy_telldir,
280 .rewind_dir_fn = shadow_copy_rewinddir,
281 .closedir_fn = shadow_copy_closedir,
282 .get_shadow_copy_data_fn = shadow_copy_get_shadow_copy_data,
285 NTSTATUS vfs_shadow_copy_init(void);
286 NTSTATUS vfs_shadow_copy_init(void)
288 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
289 "shadow_copy", &vfs_shadow_copy_fns);
291 if (!NT_STATUS_IS_OK(ret))
294 vfs_shadow_copy_debug_level = debug_add_class("shadow_copy");
295 if (vfs_shadow_copy_debug_level == -1) {
296 vfs_shadow_copy_debug_level = DBGC_VFS;
297 DEBUG(0, ("%s: Couldn't register custom debugging class!\n",
298 "vfs_shadow_copy_init"));
300 DEBUG(10, ("%s: Debug class number of '%s': %d\n",
301 "vfs_shadow_copy_init","shadow_copy",vfs_shadow_copy_debug_level));