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* implementation of an Shadow Copy module
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* Copyright (C) Stefan Metzmacher 2003-2004
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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Please read the VFS module Samba-HowTo-Collection.
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there's a chapter about this module
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the ShadowCopies are in this directories
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Z:\@GMT-2003.08.05-12.00.00\
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Z:\@GMT-2003.08.05-12.01.00\
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Z:\@GMT-2003.08.05-12.02.00\
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Z:\@GMT-2003.08.05-12.02.00\testfile.txt
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Z:\testdir\testfile.txt
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Z:\@GMT-2003.08.05-12.02.00\testdir\testfile.txt
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Note: Files must differ to be displayed via Windows Explorer!
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Directories are always displayed...
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static int vfs_shadow_copy_debug_level = DBGC_VFS;
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#define DBGC_CLASS vfs_shadow_copy_debug_level
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#define SHADOW_COPY_PREFIX "@GMT-"
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#define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
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SMB_STRUCT_DIRENT *dirs;
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static BOOL shadow_copy_match_name(const char *name)
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if (strncmp(SHADOW_COPY_PREFIX,name, sizeof(SHADOW_COPY_PREFIX)-1)==0 &&
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(strlen(SHADOW_COPY_SAMPLE) == strlen(name))) {
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static SMB_STRUCT_DIR *shadow_copy_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
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shadow_copy_Dir *dirp;
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SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fname,mask,attr);
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DEBUG(0,("shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fname));
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dirp = SMB_MALLOC_P(shadow_copy_Dir);
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DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
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SMB_VFS_NEXT_CLOSEDIR(handle,p);
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d = SMB_VFS_NEXT_READDIR(handle, p);
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if (shadow_copy_match_name(d->d_name)) {
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DEBUG(8,("shadow_copy_opendir: hide [%s]\n",d->d_name));
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DEBUG(10,("shadow_copy_opendir: not hide [%s]\n",d->d_name));
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dirp->dirs = SMB_REALLOC_ARRAY(dirp->dirs,SMB_STRUCT_DIRENT, dirp->num+1);
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DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
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dirp->dirs[dirp->num++] = *d;
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SMB_VFS_NEXT_CLOSEDIR(handle,p);
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return((SMB_STRUCT_DIR *)dirp);
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SMB_STRUCT_DIRENT *shadow_copy_readdir(vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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if (dirp->pos < dirp->num) {
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return &(dirp->dirs[dirp->pos++]);
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static void shadow_copy_seekdir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp, long offset)
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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if (offset < dirp->num) {
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static long shadow_copy_telldir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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return( dirp->pos ) ;
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static void shadow_copy_rewinddir(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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int shadow_copy_closedir(vfs_handle_struct *handle, SMB_STRUCT_DIR *_dirp)
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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SAFE_FREE(dirp->dirs);
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static int shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle, files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, BOOL labels)
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SMB_STRUCT_DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fsp->conn->connectpath,NULL,0);
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shadow_copy_data->num_volumes = 0;
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shadow_copy_data->labels = NULL;
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DEBUG(0,("shadow_copy_get_shadow_copy_data: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fsp->conn->connectpath));
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SHADOW_COPY_LABEL *tlabels;
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SMB_STRUCT_DIRENT *d;
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d = SMB_VFS_NEXT_READDIR(handle, p);
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if (!shadow_copy_match_name(d->d_name)) {
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DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore [%s]\n",d->d_name));
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DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore [%s]\n",d->d_name));
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shadow_copy_data->num_volumes++;
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tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(shadow_copy_data->mem_ctx,
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shadow_copy_data->labels,
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(shadow_copy_data->num_volumes+1)*sizeof(SHADOW_COPY_LABEL));
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if (tlabels == NULL) {
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DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of memory\n"));
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SMB_VFS_NEXT_CLOSEDIR(handle,p);
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snprintf(tlabels[shadow_copy_data->num_volumes++], sizeof(*tlabels), "%s",d->d_name);
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shadow_copy_data->labels = tlabels;
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SMB_VFS_NEXT_CLOSEDIR(handle,p);
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/* VFS operations structure */
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static vfs_op_tuple shadow_copy_ops[] = {
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{SMB_VFS_OP(shadow_copy_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_readdir), SMB_VFS_OP_READDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_seekdir), SMB_VFS_OP_SEEKDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_telldir), SMB_VFS_OP_TELLDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_rewinddir), SMB_VFS_OP_REWINDDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_closedir), SMB_VFS_OP_CLOSEDIR, SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(shadow_copy_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,SMB_VFS_LAYER_OPAQUE},
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{SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
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NTSTATUS vfs_shadow_copy_init(void)
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NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "shadow_copy", shadow_copy_ops);
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if (!NT_STATUS_IS_OK(ret))
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vfs_shadow_copy_debug_level = debug_add_class("shadow_copy");
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if (vfs_shadow_copy_debug_level == -1) {
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vfs_shadow_copy_debug_level = DBGC_VFS;
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DEBUG(0, ("%s: Couldn't register custom debugging class!\n",
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"vfs_shadow_copy_init"));
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DEBUG(10, ("%s: Debug class number of '%s': %d\n",
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"vfs_shadow_copy_init","shadow_copy",vfs_shadow_copy_debug_level));