mirror of
git://sourceware.org/git/lvm2.git
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227 lines
5.1 KiB
C
227 lines
5.1 KiB
C
/*
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* Copyright (C) 2001 Sistina Software
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*
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* This LVM library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This LVM library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this LVM library; if not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA
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*
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*/
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#include "tools.h"
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#include <ctype.h>
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static int _autobackup = 1;
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int autobackup_set()
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{
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return _autobackup;
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}
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int init_autobackup()
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{
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char *lvm_autobackup;
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if (arg_count(autobackup_ARG)) {
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_autobackup = strcmp(arg_str_value(autobackup_ARG, "y"), "n");
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return 0;
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}
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_autobackup = 1; /* default */
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lvm_autobackup = getenv("LVM_AUTOBACKUP");
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if (!lvm_autobackup)
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return 0;
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log_print("using environment variable LVM_AUTOBACKUP "
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"to set option A");
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if (!strcasecmp(lvm_autobackup, "no"))
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_autobackup = 0;
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else if (strcasecmp(lvm_autobackup, "yes")) {
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log_error("environment variable LVM_AUTOBACKUP has "
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"invalid value \"%s\"!", lvm_autobackup);
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return -1;
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}
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return 0;
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}
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int do_autobackup(struct volume_group *vg)
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{
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/***************
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log_verbose("Changing lvmtab");
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if ((vg_cfgbackup(vg_name, LVMTAB_DIR, vg))) {
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log_error("\"%s\" writing \"%s\"", lvm_error(ret), LVMTAB);
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return LVM_E_VG_CFGBACKUP;
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}
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**************/
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if (!autobackup_set()) {
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log_print
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("WARNING: You don't have an automatic backup of %s",
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vg->name);
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return 0;
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}
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/***************
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log_print("Creating automatic backup of volume group \"%s\"", vg_name);
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if ((vg_cfgbackup(vg_name, VG_BACKUP_DIR, vg))) {
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log_error("\"%s\" writing VG backup of \"%s\"", lvm_error(ret),
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vg_name);
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return LVM_E_VG_CFGBACKUP;
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}
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***************/
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return 0;
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}
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int process_each_vg(int argc, char **argv,
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int (*process_single) (const char *vg_name))
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{
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int opt = 0;
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int ret_max = 0;
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int ret = 0;
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struct list *vgh;
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struct list *vgs_list;
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if (argc) {
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log_verbose("Using volume group(s) on command line");
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for (; opt < argc; opt++)
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if ((ret = process_single(argv[opt])) > ret_max)
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ret_max = ret;
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} else {
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log_verbose("Finding all volume group(s)");
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if (!(vgs_list = ios->get_vgs(ios))) {
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log_error("No volume groups found");
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return ECMD_FAILED;
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}
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list_iterate(vgh, vgs_list) {
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ret = process_single(
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list_item(vgh, struct name_list)->name);
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if (ret > ret_max)
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ret_max = ret;
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}
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}
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return ret_max;
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}
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int process_each_pv(int argc, char **argv, struct volume_group *vg,
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int (*process_single) (struct volume_group * vg,
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struct physical_volume * pv))
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{
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int opt = 0;
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int ret_max = 0;
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int ret = 0;
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struct list *pvh;
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if (argc) {
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log_verbose("Using physical volume(s) on command line");
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for (; opt < argc; opt++) {
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if (!(pvh = find_pv_in_vg(vg, argv[opt]))) {
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log_error("Physical Volume %s not found in "
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"Volume Group %s", argv[opt],
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vg->name);
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continue;
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}
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ret = process_single(vg,
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&list_item(pvh, struct pv_list)->pv);
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if (ret > ret_max)
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ret_max = ret;
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}
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} else {
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log_verbose("Using all physical volume(s) in volume group");
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list_iterate(pvh, &vg->pvs) {
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ret = process_single(vg,
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&list_item(pvh, struct pv_list)->pv);
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if (ret > ret_max)
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ret_max = ret;
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}
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}
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return ret_max;
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}
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int is_valid_chars(char *n)
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{
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register char c;
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while ((c = *n++))
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if (!isalnum(c) && c != '.' && c != '_' && c != '-' && c != '+')
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return 0;
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return 1;
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}
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char *extract_vgname(struct io_space *ios, char *lv_name)
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{
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char *vg_name = lv_name;
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char *st;
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/* Path supplied? */
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if (vg_name && strchr(vg_name, '/')) {
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/* Strip prefix (optional) */
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if (!strncmp(vg_name, ios->prefix, strlen(ios->prefix)))
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vg_name += strlen(ios->prefix);
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/* Require exactly one slash */
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/* FIXME But allow for consecutive slashes */
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if (!(st = strchr(vg_name, '/')) || (strchr(st + 1, '/'))) {
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log_error("%s: Invalid path for Logical Volume", lv_name);
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return 0;
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}
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vg_name = pool_strdup(ios->mem, vg_name);
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if (!vg_name) {
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log_error("Allocation of vg_name failed");
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return 0;
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}
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*strchr(vg_name, '/') = '\0';
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return vg_name;
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}
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if (!(vg_name = default_vgname(ios))) {
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if (lv_name)
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log_error("Path required for Logical Volume %s", lv_name);
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return 0;
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}
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return vg_name;
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}
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char *default_vgname(struct io_space *ios)
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{
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char *vg_path;
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/* Take default VG from environment? */
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vg_path = getenv("LVM_VG_NAME");
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if (!vg_path)
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return 0;
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/* Strip prefix (optional) */
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if (!strncmp(vg_path, ios->prefix, strlen(ios->prefix)))
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vg_path += strlen(ios->prefix);
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if (strchr(vg_path, '/')) {
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log_error("Environment Volume Group in LVM_VG_NAME invalid: %s",
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vg_path);
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return 0;
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}
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return pool_strdup(ios->mem, vg_path);
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}
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