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/>.
23
Please read the VFS module Samba-HowTo-Collection.
24
there's a chapter about this module
29
the ShadowCopies are in this directories
31
Z:\@GMT-2003.08.05-12.00.00\
32
Z:\@GMT-2003.08.05-12.01.00\
33
Z:\@GMT-2003.08.05-12.02.00\
38
Z:\@GMT-2003.08.05-12.02.00\testfile.txt
42
Z:\testdir\testfile.txt
43
Z:\@GMT-2003.08.05-12.02.00\testdir\testfile.txt
46
Note: Files must differ to be displayed via Windows Explorer!
47
Directories are always displayed...
50
static int vfs_shadow_copy_debug_level = DBGC_VFS;
53
#define DBGC_CLASS vfs_shadow_copy_debug_level
55
#define SHADOW_COPY_PREFIX "@GMT-"
56
#define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
61
SMB_STRUCT_DIRENT *dirs;
64
static bool shadow_copy_match_name(const char *name)
66
if (strncmp(SHADOW_COPY_PREFIX,name, sizeof(SHADOW_COPY_PREFIX)-1)==0 &&
67
(strlen(SHADOW_COPY_SAMPLE) == strlen(name))) {
74
static SMB_STRUCT_DIR *shadow_copy_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
76
shadow_copy_Dir *dirp;
77
SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fname,mask,attr);
80
DEBUG(0,("shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fname));
84
dirp = SMB_MALLOC_P(shadow_copy_Dir);
86
DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
87
SMB_VFS_NEXT_CLOSEDIR(handle,p);
96
d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
101
if (shadow_copy_match_name(d->d_name)) {
102
DEBUG(8,("shadow_copy_opendir: hide [%s]\n",d->d_name));
106
DEBUG(10,("shadow_copy_opendir: not hide [%s]\n",d->d_name));
108
dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,SMB_STRUCT_DIRENT, dirp->num+1);
110
DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
114
dirp->dirs[dirp->num++] = *d;
117
SMB_VFS_NEXT_CLOSEDIR(handle,p);
118
return((SMB_STRUCT_DIR *)dirp);
121
static SMB_STRUCT_DIRENT *shadow_copy_readdir(vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
123
shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
125
if (dirp->pos < dirp->num) {
126
return &(dirp->dirs[dirp->pos++]);
132
static void shadow_copy_seekdir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp, long offset)
134
shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
136
if (offset < dirp->num) {
141
static long shadow_copy_telldir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
143
shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
144
return( dirp->pos ) ;
147
static void shadow_copy_rewinddir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
149
shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
153
static int shadow_copy_closedir(vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
155
shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
157
SAFE_FREE(dirp->dirs);
163
static int shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle, files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels)
165
SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fsp->conn->connectpath,NULL,0);
167
shadow_copy_data->num_volumes = 0;
168
shadow_copy_data->labels = NULL;
171
DEBUG(0,("shadow_copy_get_shadow_copy_data: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fsp->conn->connectpath));
176
SHADOW_COPY_LABEL *tlabels;
177
SMB_STRUCT_DIRENT *d;
179
d = SMB_VFS_NEXT_READDIR(handle, p, NULL);
185
if (!shadow_copy_match_name(d->d_name)) {
186
DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore [%s]\n",d->d_name));
190
DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore [%s]\n",d->d_name));
193
shadow_copy_data->num_volumes++;
197
tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(shadow_copy_data->mem_ctx,
198
shadow_copy_data->labels,
199
(shadow_copy_data->num_volumes+1)*sizeof(SHADOW_COPY_LABEL));
200
if (tlabels == NULL) {
201
DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of memory\n"));
202
SMB_VFS_NEXT_CLOSEDIR(handle,p);
206
snprintf(tlabels[shadow_copy_data->num_volumes++], sizeof(*tlabels), "%s",d->d_name);
208
shadow_copy_data->labels = tlabels;
211
SMB_VFS_NEXT_CLOSEDIR(handle,p);
215
/* VFS operations structure */
217
static vfs_op_tuple shadow_copy_ops[] = {
218
{SMB_VFS_OP(shadow_copy_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_TRANSPARENT},
219
{SMB_VFS_OP(shadow_copy_readdir), SMB_VFS_OP_READDIR, SMB_VFS_LAYER_TRANSPARENT},
220
{SMB_VFS_OP(shadow_copy_seekdir), SMB_VFS_OP_SEEKDIR, SMB_VFS_LAYER_TRANSPARENT},
221
{SMB_VFS_OP(shadow_copy_telldir), SMB_VFS_OP_TELLDIR, SMB_VFS_LAYER_TRANSPARENT},
222
{SMB_VFS_OP(shadow_copy_rewinddir), SMB_VFS_OP_REWINDDIR, SMB_VFS_LAYER_TRANSPARENT},
223
{SMB_VFS_OP(shadow_copy_closedir), SMB_VFS_OP_CLOSEDIR, SMB_VFS_LAYER_TRANSPARENT},
225
{SMB_VFS_OP(shadow_copy_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,SMB_VFS_LAYER_OPAQUE},
227
{SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
230
NTSTATUS vfs_shadow_copy_init(void);
231
NTSTATUS vfs_shadow_copy_init(void)
233
NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "shadow_copy", shadow_copy_ops);
235
if (!NT_STATUS_IS_OK(ret))
238
vfs_shadow_copy_debug_level = debug_add_class("shadow_copy");
239
if (vfs_shadow_copy_debug_level == -1) {
240
vfs_shadow_copy_debug_level = DBGC_VFS;
241
DEBUG(0, ("%s: Couldn't register custom debugging class!\n",
242
"vfs_shadow_copy_init"));
244
DEBUG(10, ("%s: Debug class number of '%s': %d\n",
245
"vfs_shadow_copy_init","shadow_copy",vfs_shadow_copy_debug_level));