1 /* $NetBSD: vgcfgbackup.c,v 1.1.1.2 2009/12/02 00:25:56 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 6 * 7 * This file is part of LVM2. 8 * 9 * This copyrighted material is made available to anyone wishing to use, 10 * modify, copy, or redistribute it subject to the terms and conditions 11 * of the GNU Lesser General Public License v.2.1. 12 * 13 * You should have received a copy of the GNU Lesser General Public License 14 * along with this program; if not, write to the Free Software Foundation, 15 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16 */ 17 18 #include "tools.h" 19 20 static char *_expand_filename(const char *template, const char *vg_name, 21 char **last_filename) 22 { 23 char *filename; 24 25 if (security_level()) 26 return dm_strdup(template); 27 28 if (!(filename = dm_malloc(PATH_MAX))) { 29 log_error("Failed to allocate filename."); 30 return NULL; 31 } 32 33 if (snprintf(filename, PATH_MAX, template, vg_name) < 0) { 34 log_error("Error processing filename template %s", 35 template); 36 dm_free(filename); 37 return NULL; 38 } 39 if (*last_filename && !strncmp(*last_filename, filename, PATH_MAX)) { 40 log_error("VGs must be backed up into different files. " 41 "Use %%s in filename for VG name."); 42 dm_free(filename); 43 return NULL; 44 } 45 46 dm_free(*last_filename); 47 *last_filename = filename; 48 49 return filename; 50 } 51 52 static int vg_backup_single(struct cmd_context *cmd, const char *vg_name, 53 struct volume_group *vg, 54 void *handle) 55 { 56 char **last_filename = (char **)handle; 57 char *filename; 58 59 if (arg_count(cmd, file_ARG)) { 60 if (!(filename = _expand_filename(arg_value(cmd, file_ARG), 61 vg->name, last_filename))) { 62 stack; 63 return ECMD_FAILED; 64 } 65 66 if (!backup_to_file(filename, vg->cmd->cmd_line, vg)) { 67 stack; 68 return ECMD_FAILED; 69 } 70 } else { 71 if (vg_read_error(vg) == FAILED_INCONSISTENT) { 72 log_error("No backup taken: specify filename with -f " 73 "to backup an inconsistent VG"); 74 stack; 75 return ECMD_FAILED; 76 } 77 78 /* just use the normal backup code */ 79 backup_enable(cmd, 1); /* force a backup */ 80 if (!backup(vg)) { 81 stack; 82 return ECMD_FAILED; 83 } 84 } 85 86 log_print("Volume group \"%s\" successfully backed up.", vg_name); 87 return ECMD_PROCESSED; 88 } 89 90 int vgcfgbackup(struct cmd_context *cmd, int argc, char **argv) 91 { 92 int ret; 93 char *last_filename = NULL; 94 95 init_pvmove(1); 96 97 ret = process_each_vg(cmd, argc, argv, READ_ALLOW_INCONSISTENT, 98 &last_filename, &vg_backup_single); 99 100 dm_free(last_filename); 101 102 init_pvmove(0); 103 104 return ret; 105 } 106