1 /* $NetBSD: lvrename.c,v 1.1.1.2 2009/12/02 00:25:52 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 #include "lvm-types.h"
20
21
22 /*
23 * lvrename command implementation.
24 * Check arguments and call lv_rename() to execute the request.
25 */
lvrename(struct cmd_context * cmd,int argc,char ** argv)26 int lvrename(struct cmd_context *cmd, int argc, char **argv)
27 {
28 size_t maxlen;
29 char *lv_name_old, *lv_name_new;
30 const char *vg_name, *vg_name_new, *vg_name_old;
31 char *st;
32 int r = ECMD_FAILED;
33
34 struct volume_group *vg = NULL;
35 struct lv_list *lvl;
36
37 if (argc == 3) {
38 vg_name = skip_dev_dir(cmd, argv[0], NULL);
39 lv_name_old = argv[1];
40 lv_name_new = argv[2];
41 if (strchr(lv_name_old, '/') &&
42 (vg_name_old = extract_vgname(cmd, lv_name_old)) &&
43 strcmp(vg_name_old, vg_name)) {
44 log_error("Please use a single volume group name "
45 "(\"%s\" or \"%s\")", vg_name, vg_name_old);
46 return EINVALID_CMD_LINE;
47 }
48 } else if (argc == 2) {
49 lv_name_old = argv[0];
50 lv_name_new = argv[1];
51 vg_name = extract_vgname(cmd, lv_name_old);
52 } else {
53 log_error("Old and new logical volume names required");
54 return EINVALID_CMD_LINE;
55 }
56
57 if (!validate_name(vg_name)) {
58 log_error("Please provide a valid volume group name");
59 return EINVALID_CMD_LINE;
60 }
61
62 if (strchr(lv_name_new, '/') &&
63 (vg_name_new = extract_vgname(cmd, lv_name_new)) &&
64 strcmp(vg_name, vg_name_new)) {
65 log_error("Logical volume names must "
66 "have the same volume group (\"%s\" or \"%s\")",
67 vg_name, vg_name_new);
68 return EINVALID_CMD_LINE;
69 }
70
71 if ((st = strrchr(lv_name_old, '/')))
72 lv_name_old = st + 1;
73
74 if ((st = strrchr(lv_name_new, '/')))
75 lv_name_new = st + 1;
76
77 /* Check sanity of new name */
78 maxlen = NAME_LEN - strlen(vg_name) - strlen(cmd->dev_dir) - 3;
79 if (strlen(lv_name_new) > maxlen) {
80 log_error("New logical volume path exceeds maximum length "
81 "of %" PRIsize_t "!", maxlen);
82 return ECMD_FAILED;
83 }
84
85 if (!*lv_name_new) {
86 log_error("New logical volume name may not be blank");
87 return ECMD_FAILED;
88 }
89
90 if (!apply_lvname_restrictions(lv_name_new)) {
91 stack;
92 return ECMD_FAILED;
93 }
94
95 if (!validate_name(lv_name_new)) {
96 log_error("New logical volume name \"%s\" is invalid",
97 lv_name_new);
98 return EINVALID_CMD_LINE;
99 }
100
101 if (!strcmp(lv_name_old, lv_name_new)) {
102 log_error("Old and new logical volume names must differ");
103 return EINVALID_CMD_LINE;
104 }
105
106 log_verbose("Checking for existing volume group \"%s\"", vg_name);
107 vg = vg_read_for_update(cmd, vg_name, NULL, 0);
108 if (vg_read_error(vg)) {
109 vg_release(vg);
110 stack;
111 return ECMD_FAILED;
112 }
113
114 if (!(lvl = find_lv_in_vg(vg, lv_name_old))) {
115 log_error("Existing logical volume \"%s\" not found in "
116 "volume group \"%s\"", lv_name_old, vg_name);
117 goto error;
118 }
119
120 if (!lv_rename(cmd, lvl->lv, lv_name_new))
121 goto error;
122
123 log_print("Renamed \"%s\" to \"%s\" in volume group \"%s\"",
124 lv_name_old, lv_name_new, vg_name);
125
126 r = ECMD_PROCESSED;
127 error:
128 unlock_and_release_vg(cmd, vg, vg_name);
129 return r;
130 }
131