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"
24 Please read the VFS module Samba-HowTo-Collection.
25 there's a chapter about this module
30 the ShadowCopies are in this directories
32 Z:\@GMT-2003.08.05-12.00.00\
33 Z:\@GMT-2003.08.05-12.01.00\
34 Z:\@GMT-2003.08.05-12.02.00\
39 Z:\@GMT-2003.08.05-12.02.00\testfile.txt
43 Z:\testdir\testfile.txt
44 Z:\@GMT-2003.08.05-12.02.00\testdir\testfile.txt
47 Note: Files must differ to be displayed via Windows Explorer!
48 Directories are always displayed...
51 static int vfs_shadow_copy_debug_level = DBGC_VFS;
54 #define DBGC_CLASS vfs_shadow_copy_debug_level
56 #define SHADOW_COPY_PREFIX "@GMT-"
57 #define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
62 SMB_STRUCT_DIRENT *dirs;
65 static bool shadow_copy_match_name(const char *name)
67 if (strncmp(SHADOW_COPY_PREFIX,name, sizeof(SHADOW_COPY_PREFIX)-1)==0 &&
68 (strlen(SHADOW_COPY_SAMPLE) == strlen(name))) {
75 static SMB_STRUCT_DIR *shadow_copy_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
77 shadow_copy_Dir *dirp;
78 SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fname,mask,attr);
81 DEBUG(0,("shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fname));
85 dirp = SMB_MALLOC_P(shadow_copy_Dir);
87 DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
88 SMB_VFS_NEXT_CLOSEDIR(handle,p);
97 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
102 if (shadow_copy_match_name(d->d_name)) {
103 DEBUG(8,("shadow_copy_opendir: hide [%s]\n",d->d_name));
107 DEBUG(10,("shadow_copy_opendir: not hide [%s]\n",d->d_name));
109 dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,SMB_STRUCT_DIRENT, dirp->num+1);
111 DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
115 dirp->dirs[dirp->num++] = *d;
118 SMB_VFS_NEXT_CLOSEDIR(handle,p);
119 return((SMB_STRUCT_DIR *)dirp);
122 static SMB_STRUCT_DIR *shadow_copy_fdopendir(vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attr)
124 shadow_copy_Dir *dirp;
125 SMB_STRUCT_DIR *p = SMB_VFS_NEXT_FDOPENDIR(handle,fsp,mask,attr);
128 DEBUG(10,("shadow_copy_opendir: SMB_VFS_NEXT_FDOPENDIR() failed for [%s]\n",
129 smb_fname_str_dbg(fsp->fsp_name)));
133 dirp = SMB_MALLOC_P(shadow_copy_Dir);
135 DEBUG(0,("shadow_copy_fdopendir: Out of memory\n"));
136 SMB_VFS_NEXT_CLOSEDIR(handle,p);
137 /* We have now closed the fd in fsp. */
145 SMB_STRUCT_DIRENT *d;
147 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
152 if (shadow_copy_match_name(d->d_name)) {
153 DEBUG(8,("shadow_copy_fdopendir: hide [%s]\n",d->d_name));
157 DEBUG(10,("shadow_copy_fdopendir: not hide [%s]\n",d->d_name));
159 dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,SMB_STRUCT_DIRENT, dirp->num+1);
161 DEBUG(0,("shadow_copy_fdopendir: Out of memory\n"));
165 dirp->dirs[dirp->num++] = *d;
168 SMB_VFS_NEXT_CLOSEDIR(handle,p);
169 /* We have now closed the fd in fsp. */
171 return((SMB_STRUCT_DIR *)dirp);
174 static SMB_STRUCT_DIRENT *shadow_copy_readdir(vfs_handle_struct *handle,
175 SMB_STRUCT_DIR *_dirp,
176 SMB_STRUCT_STAT *sbuf)
178 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
180 if (dirp->pos < dirp->num) {
181 return &(dirp->dirs[dirp->pos++]);
187 static void shadow_copy_seekdir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp, long offset)
189 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
191 if (offset < dirp->num) {
196 static long shadow_copy_telldir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
198 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
199 return( dirp->pos ) ;
202 static void shadow_copy_rewinddir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
204 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
208 static int shadow_copy_closedir(vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
210 shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
212 SAFE_FREE(dirp->dirs);
218 static int shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle, files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels)
220 SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fsp->conn->connectpath,NULL,0);
222 shadow_copy_data->num_volumes = 0;
223 shadow_copy_data->labels = NULL;
226 DEBUG(0,("shadow_copy_get_shadow_copy_data: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fsp->conn->connectpath));
231 SHADOW_COPY_LABEL *tlabels;
232 SMB_STRUCT_DIRENT *d;
234 d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
240 if (!shadow_copy_match_name(d->d_name)) {
241 DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore [%s]\n",d->d_name));
245 DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore [%s]\n",d->d_name));
248 shadow_copy_data->num_volumes++;
252 tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(shadow_copy_data->mem_ctx,
253 shadow_copy_data->labels,
254 (shadow_copy_data->num_volumes+1)*sizeof(SHADOW_COPY_LABEL));
255 if (tlabels == NULL) {
256 DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of memory\n"));
257 SMB_VFS_NEXT_CLOSEDIR(handle,p);
261 snprintf(tlabels[shadow_copy_data->num_volumes++], sizeof(*tlabels), "%s",d->d_name);
263 shadow_copy_data->labels = tlabels;
266 SMB_VFS_NEXT_CLOSEDIR(handle,p);
270 static struct vfs_fn_pointers vfs_shadow_copy_fns = {
271 .opendir = shadow_copy_opendir,
272 .fdopendir = shadow_copy_fdopendir,
273 .readdir = shadow_copy_readdir,
274 .seekdir = shadow_copy_seekdir,
275 .telldir = shadow_copy_telldir,
276 .rewind_dir = shadow_copy_rewinddir,
277 .closedir = shadow_copy_closedir,
278 .get_shadow_copy_data = shadow_copy_get_shadow_copy_data,
281 NTSTATUS vfs_shadow_copy_init(void);
282 NTSTATUS vfs_shadow_copy_init(void)
284 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
285 "shadow_copy", &vfs_shadow_copy_fns);
287 if (!NT_STATUS_IS_OK(ret))
290 vfs_shadow_copy_debug_level = debug_add_class("shadow_copy");
291 if (vfs_shadow_copy_debug_level == -1) {
292 vfs_shadow_copy_debug_level = DBGC_VFS;
293 DEBUG(0, ("%s: Couldn't register custom debugging class!\n",
294 "vfs_shadow_copy_init"));
296 DEBUG(10, ("%s: Debug class number of '%s': %d\n",
297 "vfs_shadow_copy_init","shadow_copy",vfs_shadow_copy_debug_level));