mirror of
https://github.com/samba-team/samba.git
synced 2025-07-30 19:42:05 +03:00
r329: add the shadow_copy vfs module
I'll add documentation to the Samba-Howto-Collection
metze
(This used to be commit 2bef5d2741)
This commit is contained in:
Stefan Metzmacher
committed by
Gerald (Jerry) Carter
Gerald (Jerry) Carter
parent
c271c86180
commit
6f3fe3a85a
@ -320,6 +320,7 @@ VFS_DEFAULT_QUOTA_OBJ = modules/vfs_default_quota.o
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VFS_READONLY_OBJ = modules/vfs_readonly.o modules/getdate.o
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VFS_CAP_OBJ = modules/vfs_cap.o
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VFS_EXPAND_MSDFS_OBJ = modules/vfs_expand_msdfs.o
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VFS_SHADOW_COPY_OBJ = modules/vfs_shadow_copy.o
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PLAINTEXT_AUTH_OBJ = auth/pampass.o auth/pass_check.o
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@ -1169,6 +1170,11 @@ bin/readonly.@SHLIBEXT@: $(VFS_READONLY_OBJ:.o=.@PICSUFFIX@)
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@$(SHLD) $(LDSHFLAGS) -o $@ $(VFS_READONLY_OBJ:.o=.@PICSUFFIX@) \
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@SONAMEFLAG@`basename $@`
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bin/shadow_copy.@SHLIBEXT@: $(VFS_SHADOW_COPY_OBJ:.o=.@PICSUFFIX@)
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@echo "Building plugin $@"
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@$(SHLD) $(LDSHFLAGS) -o $@ $(VFS_SHADOW_COPY_OBJ:.o=.@PICSUFFIX@) \
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@SONAMEFLAG@`basename $@`
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bin/cap.@SHLIBEXT@: $(VFS_CAP_OBJ:.o=.@PICSUFFIX@)
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@echo "Building plugin $@"
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@$(SHLD) $(LDSHFLAGS) -o $@ $(VFS_CAP_OBJ:.o=.@PICSUFFIX@) \
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@ -360,7 +360,7 @@ dnl These have to be built static:
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default_static_modules="pdb_smbpasswd pdb_tdbsam rpc_lsa rpc_samr rpc_reg rpc_lsa_ds rpc_wks rpc_net rpc_dfs rpc_srv rpc_spoolss auth_rhosts auth_sam auth_unix auth_winbind auth_server auth_domain auth_builtin"
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dnl These are preferably build shared, and static if dlopen() is not available
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default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs charset_CP850 charset_CP437"
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default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs vfs_shadow_copy charset_CP850 charset_CP437"
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if test "x$developer" = xyes; then
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default_static_modules="$default_static_modules rpc_echo"
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@ -4333,6 +4333,7 @@ SMB_MODULE(vfs_default_quota, \$(VFS_DEFAULT_QUOTA_OBJ), "bin/default_quota.$SHL
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SMB_MODULE(vfs_readonly, \$(VFS_READONLY_OBJ), "bin/readonly.$SHLIBEXT", VFS)
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SMB_MODULE(vfs_cap, \$(VFS_CAP_OBJ), "bin/cap.$SHLIBEXT", VFS)
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SMB_MODULE(vfs_expand_msdfs, \$(VFS_EXPAND_MSDFS_OBJ), "bin/expand_msdfs.$SHLIBEXT", VFS)
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SMB_MODULE(vfs_shadow_copy, \$(VFS_SHADOW_COPY_OBJ), "bin/shadow_copy.$SHLIBEXT", VFS)
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SMB_SUBSYSTEM(VFS,smbd/vfs.o)
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AC_DEFINE_UNQUOTED(STRING_STATIC_MODULES, "$string_static_modules", [String list of builtin modules])
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227
source3/modules/vfs_shadow_copy.c
Normal file
227
source3/modules/vfs_shadow_copy.c
Normal file
@ -0,0 +1,227 @@
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/*
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* implementation of an Shadow Copy module
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*
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* Copyright (C) Stefan Metzmacher 2003-2004
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*
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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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*
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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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*
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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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*/
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#include "includes.h"
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/*
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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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For this share
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Z:\
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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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e.g.
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Z:\testfile.txt
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Z:\@GMT-2003.08.05-12.02.00\testfile.txt
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or:
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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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*/
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static int vfs_shadow_copy_debug_level = DBGC_VFS;
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#undef DBGC_CLASS
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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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typedef struct {
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int pos;
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int num;
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struct dirent *dirs;
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} shadow_copy_Dir;
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static BOOL shadow_copy_match_name(const char *name)
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{
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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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return True;
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}
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return False;
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}
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static DIR *shadow_copy_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname)
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{
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shadow_copy_Dir *dirp;
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DIR *p = SMB_VFS_NEXT_OPENDIR(handle,conn,fname);
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if (!p) {
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DEBUG(0,("shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [%s]\n",fname));
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return NULL;
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}
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dirp = (shadow_copy_Dir *)malloc(sizeof(shadow_copy_Dir));
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if (!dirp) {
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DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
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SMB_VFS_NEXT_CLOSEDIR(handle,conn,p);
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return NULL;
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}
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ZERO_STRUCTP(dirp);
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while (True) {
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struct dirent *d;
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struct dirent *r;
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d = SMB_VFS_NEXT_READDIR(handle, conn, p);
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if (d == NULL) {
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break;
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}
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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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continue;
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}
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DEBUG(10,("shadow_copy_opendir: not hide [%s]\n",d->d_name));
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r = (struct dirent *)Realloc(dirp->dirs,(dirp->num+1)*sizeof(struct dirent));
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if (!r) {
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DEBUG(0,("shadow_copy_opendir: Out of memory\n"));
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break;
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}
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dirp->dirs = r;
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dirp->dirs[dirp->num++] = *d;
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}
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SMB_VFS_NEXT_CLOSEDIR(handle,conn,p);
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return((DIR *)dirp);
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}
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struct dirent *shadow_copy_readdir(vfs_handle_struct *handle, connection_struct *conn, DIR *_dirp)
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{
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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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}
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return NULL;
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}
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int shadow_copy_closedir(vfs_handle_struct *handle, connection_struct *conn, DIR *_dirp)
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{
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shadow_copy_Dir *dirp = (shadow_copy_Dir *)_dirp;
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SAFE_FREE(dirp);
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return 0;
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}
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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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{
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DIR *p = SMB_VFS_NEXT_OPENDIR(handle,fsp->conn,fsp->conn->connectpath);
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shadow_copy_data->num_volumes = 0;
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shadow_copy_data->labels = NULL;
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if (!p) {
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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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return -1;
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}
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while (True) {
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SHADOW_COPY_LABEL *tlabels;
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struct dirent *d;
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d = SMB_VFS_NEXT_READDIR(handle, fsp->conn, p);
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if (d == NULL) {
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break;
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}
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/* */
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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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continue;
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}
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DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore [%s]\n",d->d_name));
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if (!labels) {
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shadow_copy_data->num_volumes++;
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continue;
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}
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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,fsp->conn,p);
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return -1;
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}
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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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}
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SMB_VFS_NEXT_CLOSEDIR(handle,fsp->conn,p);
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return 0;
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}
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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_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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};
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NTSTATUS vfs_shadow_copy_init(void)
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{
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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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return 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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} else {
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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));
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}
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return ret;
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}
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