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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
static char *_expand_filename(const char *template, const char *vg_name,
char **last_filename)
{
char *filename;
if (security_level()) {
if (!(filename = strdup(template))) {
log_error("Failed to allocate filename.");
return NULL;
}
goto out;
}
if (!(filename = malloc(PATH_MAX))) {
log_error("Failed to allocate filename.");
return NULL;
}
if (dm_snprintf(filename, PATH_MAX, template, vg_name) < 0) {
log_error("Error processing filename template %s",
template);
free(filename);
return NULL;
}
if (*last_filename && !strncmp(*last_filename, filename, PATH_MAX)) {
log_error("VGs must be backed up into different files. "
"Use %%s in filename for VG name.");
free(filename);
return NULL;
}
out:
free(*last_filename);
*last_filename = filename;
return filename;
}
static int _vg_backup_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg,
struct processing_handle *handle)
{
char **last_filename = (char **)handle->custom_handle;
char *filename;
if (arg_is_set(cmd, file_ARG)) {
if (!(filename = _expand_filename(arg_value(cmd, file_ARG),
vg->name, last_filename)))
return_ECMD_FAILED;
if (!backup_to_file(filename, vg->cmd->cmd_line, vg))
return_ECMD_FAILED;
} else {
if (vg_missing_pv_count(vg)) {
log_error("No backup taken: specify filename with -f to backup with missing PVs.");
return ECMD_FAILED;
}
if (vg_has_unknown_segments(vg)) {
log_error("No backup taken: specify filename with -f to backup with unknown segments.");
return ECMD_FAILED;
}
/* just use the normal backup code */
backup_enable(cmd, 1); /* force a backup */
if (!backup(vg))
return_ECMD_FAILED;
}
log_print_unless_silent("Volume group \"%s\" successfully backed up.", vg_name);
return ECMD_PROCESSED;
}
int vgcfgbackup(struct cmd_context *cmd, int argc, char **argv)
{
int ret;
char *last_filename = NULL;
struct processing_handle *handle = NULL;
if (!(handle = init_processing_handle(cmd, NULL))) {
log_error("Failed to initialize processing handle.");
return ECMD_FAILED;
}
handle->custom_handle = &last_filename;
/*
* Just set so that we can do the check ourselves above and
* report a helpful error message in place of the error message
* that would be generated from vg_read.
*/
cmd->handles_missing_pvs = 1;
cmd->handles_unknown_segments = 1;
init_pvmove(1);
ret = process_each_vg(cmd, argc, argv, NULL, NULL, 0, 0,
handle, &_vg_backup_single);
free(last_filename);
init_pvmove(0);
destroy_processing_handle(cmd, handle);
return ret;
}
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