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git://sourceware.org/git/lvm2.git
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d75c5f06f0
snprintf testing for negative is replaced with dm_snprintf where this test really works. Add missing test for result of dm_snprintf().
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "tools.h"
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static char *_expand_filename(const char *template, const char *vg_name,
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char **last_filename)
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{
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char *filename;
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if (security_level())
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return dm_strdup(template);
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if (!(filename = dm_malloc(PATH_MAX))) {
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log_error("Failed to allocate filename.");
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return NULL;
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}
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if (dm_snprintf(filename, PATH_MAX, template, vg_name) < 0) {
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log_error("Error processing filename template %s",
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template);
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dm_free(filename);
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return NULL;
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}
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if (*last_filename && !strncmp(*last_filename, filename, PATH_MAX)) {
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log_error("VGs must be backed up into different files. "
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"Use %%s in filename for VG name.");
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dm_free(filename);
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return NULL;
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}
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dm_free(*last_filename);
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*last_filename = filename;
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return filename;
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}
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static int vg_backup_single(struct cmd_context *cmd, const char *vg_name,
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struct volume_group *vg,
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void *handle)
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{
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char **last_filename = (char **)handle;
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char *filename;
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if (arg_count(cmd, file_ARG)) {
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if (!(filename = _expand_filename(arg_value(cmd, file_ARG),
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vg->name, last_filename))) {
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stack;
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return ECMD_FAILED;
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}
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if (!backup_to_file(filename, vg->cmd->cmd_line, vg)) {
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stack;
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return ECMD_FAILED;
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}
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} else {
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if (vg_read_error(vg) == FAILED_INCONSISTENT) {
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log_error("No backup taken: specify filename with -f "
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"to backup an inconsistent VG");
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stack;
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return ECMD_FAILED;
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}
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/* just use the normal backup code */
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backup_enable(cmd, 1); /* force a backup */
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if (!backup(vg)) {
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stack;
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return ECMD_FAILED;
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}
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}
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log_print("Volume group \"%s\" successfully backed up.", vg_name);
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return ECMD_PROCESSED;
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}
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int vgcfgbackup(struct cmd_context *cmd, int argc, char **argv)
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{
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int ret;
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char *last_filename = NULL;
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init_pvmove(1);
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ret = process_each_vg(cmd, argc, argv, READ_ALLOW_INCONSISTENT,
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&last_filename, &vg_backup_single);
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dm_free(last_filename);
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init_pvmove(0);
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return ret;
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}
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