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651ff9b328
Make readonly locking available as locking type 4. Fix readonly locking to permit writeable global locks (for vgscan). (2.02.49)
129 lines
3.4 KiB
C
129 lines
3.4 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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#include "lvm-types.h"
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/*
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* lvrename command implementation.
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* Check arguments and call lv_rename() to execute the request.
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*/
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int lvrename(struct cmd_context *cmd, int argc, char **argv)
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{
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size_t maxlen;
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char *lv_name_old, *lv_name_new;
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const char *vg_name, *vg_name_new, *vg_name_old;
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char *st;
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int r = ECMD_FAILED;
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struct volume_group *vg = NULL;
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struct lv_list *lvl;
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if (argc == 3) {
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vg_name = skip_dev_dir(cmd, argv[0], NULL);
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lv_name_old = argv[1];
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lv_name_new = argv[2];
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if (strchr(lv_name_old, '/') &&
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(vg_name_old = extract_vgname(cmd, lv_name_old)) &&
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strcmp(vg_name_old, vg_name)) {
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log_error("Please use a single volume group name "
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"(\"%s\" or \"%s\")", vg_name, vg_name_old);
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return EINVALID_CMD_LINE;
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}
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} else if (argc == 2) {
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lv_name_old = argv[0];
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lv_name_new = argv[1];
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vg_name = extract_vgname(cmd, lv_name_old);
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} else {
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log_error("Old and new logical volume names required");
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return EINVALID_CMD_LINE;
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}
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if (!validate_name(vg_name)) {
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log_error("Please provide a valid volume group name");
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return EINVALID_CMD_LINE;
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}
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if (strchr(lv_name_new, '/') &&
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(vg_name_new = extract_vgname(cmd, lv_name_new)) &&
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strcmp(vg_name, vg_name_new)) {
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log_error("Logical volume names must "
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"have the same volume group (\"%s\" or \"%s\")",
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vg_name, vg_name_new);
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return EINVALID_CMD_LINE;
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}
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if ((st = strrchr(lv_name_old, '/')))
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lv_name_old = st + 1;
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if ((st = strrchr(lv_name_new, '/')))
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lv_name_new = st + 1;
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/* Check sanity of new name */
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maxlen = NAME_LEN - strlen(vg_name) - strlen(cmd->dev_dir) - 3;
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if (strlen(lv_name_new) > maxlen) {
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log_error("New logical volume path exceeds maximum length "
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"of %" PRIsize_t "!", maxlen);
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return ECMD_FAILED;
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}
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if (!*lv_name_new) {
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log_error("New logical volume name may not be blank");
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return ECMD_FAILED;
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}
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if (!apply_lvname_restrictions(lv_name_new)) {
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stack;
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return ECMD_FAILED;
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}
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if (!validate_name(lv_name_new)) {
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log_error("New logical volume name \"%s\" is invalid",
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lv_name_new);
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return EINVALID_CMD_LINE;
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}
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if (!strcmp(lv_name_old, lv_name_new)) {
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log_error("Old and new logical volume names must differ");
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return EINVALID_CMD_LINE;
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}
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log_verbose("Checking for existing volume group \"%s\"", vg_name);
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vg = vg_read_for_update(cmd, vg_name, NULL, 0);
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if (vg_read_error(vg)) {
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vg_release(vg);
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stack;
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return ECMD_FAILED;
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}
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if (!(lvl = find_lv_in_vg(vg, lv_name_old))) {
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log_error("Existing logical volume \"%s\" not found in "
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"volume group \"%s\"", lv_name_old, vg_name);
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goto error;
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}
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if (!lv_rename(cmd, lvl->lv, lv_name_new))
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goto error;
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log_print("Renamed \"%s\" to \"%s\" in volume group \"%s\"",
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lv_name_old, lv_name_new, vg_name);
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r = ECMD_PROCESSED;
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error:
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unlock_and_release_vg(cmd, vg, vg_name);
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return r;
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}
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