1 /* libguestfs - the guestfsd daemon
2 * Copyright (C) 2009 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include "../src/guestfs_protocol.h"
31 do_tune2fs_l (char *device)
35 char *p, *pend, *colon;
37 int size = 0, alloc = 0;
39 IS_DEVICE (device, NULL);
41 r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
43 reply_with_error ("tune2fs: %s", err);
52 /* Discard the first line if it contains "tune2fs ...". */
53 if (strncmp (p, "tune2fs ", 8) == 0) {
57 reply_with_error ("tune2fs: truncated output");
63 /* Read the lines and split into "key: value". */
65 pend = strchrnul (p, '\n');
73 colon = strchr (p, ':');
77 do { colon++; } while (*colon && isspace (*colon));
79 if (add_string (&ret, &size, &alloc, p) == -1) {
83 if (strcmp (colon, "<none>") == 0 ||
84 strcmp (colon, "<not available>") == 0 ||
85 strcmp (colon, "(none)") == 0) {
86 if (add_string (&ret, &size, &alloc, "") == -1) {
91 if (add_string (&ret, &size, &alloc, colon) == -1) {
98 if (add_string (&ret, &size, &alloc, p) == -1) {
102 if (add_string (&ret, &size, &alloc, "") == -1) {
113 if (add_string (&ret, &size, &alloc, NULL) == -1)
120 do_set_e2label (char *device, char *label)
125 IS_DEVICE (device, -1);
127 r = command (NULL, &err, "/sbin/e2label", device, label, NULL);
129 reply_with_error ("e2label: %s", err);
139 do_get_e2label (char *device)
144 IS_DEVICE (device, NULL);
146 r = command (&out, &err, "/sbin/e2label", device, NULL);
148 reply_with_error ("e2label: %s", err);
156 /* Remove any trailing \n from the label. */
158 if (len > 0 && out[len-1] == '\n')
161 return out; /* caller frees */
165 do_set_e2uuid (char *device, char *uuid)
170 IS_DEVICE (device, -1);
172 r = command (NULL, &err, "/sbin/tune2fs", "-U", uuid, device, NULL);
174 reply_with_error ("tune2fs -U: %s", err);
184 do_get_e2uuid (char *device)
187 char *out, *err, *p, *q;
189 IS_DEVICE (device, NULL);
191 /* It's not so straightforward to get the volume UUID. We have
192 * to use tune2fs -l and then look for a particular string in
196 r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
198 reply_with_error ("tune2fs -l: %s", err);
206 /* Look for /\nFilesystem UUID:\s+/ in the output. */
207 p = strstr (out, "\nFilesystem UUID:");
209 reply_with_error ("no Filesystem UUID in the output of tune2fs -l");
215 while (*p && isspace (*p))
218 reply_with_error ("malformed Filesystem UUID in the output of tune2fs -l");
223 /* Now 'p' hopefully points to the start of the UUID. */
225 while (*q && (isxdigit (*q) || *q == '-'))
228 reply_with_error ("malformed Filesystem UUID in the output of tune2fs -l");
237 reply_with_perror ("strdup");
243 return p; /* caller frees */
247 do_resize2fs (char *device)
252 IS_DEVICE (device, -1);
254 r = command (NULL, &err, "/sbin/resize2fs", device, NULL);
256 reply_with_error ("resize2fs: %s", err);
266 do_e2fsck_f (char *device)
271 IS_DEVICE (device, -1);
273 r = command (NULL, &err, "/sbin/e2fsck", "-p", "-f", device, NULL);
275 reply_with_error ("e2fsck: %s", err);