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 (const char *device)
35 char *p, *pend, *colon;
37 int size = 0, alloc = 0;
39 r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
41 reply_with_error ("tune2fs: %s", err);
50 /* Discard the first line if it contains "tune2fs ...". */
51 if (strncmp (p, "tune2fs ", 8) == 0) {
55 reply_with_error ("tune2fs: truncated output");
61 /* Read the lines and split into "key: value". */
63 pend = strchrnul (p, '\n');
71 colon = strchr (p, ':');
75 do { colon++; } while (*colon && isspace (*colon));
77 if (add_string (&ret, &size, &alloc, p) == -1) {
81 if (strcmp (colon, "<none>") == 0 ||
82 strcmp (colon, "<not available>") == 0 ||
83 strcmp (colon, "(none)") == 0) {
84 if (add_string (&ret, &size, &alloc, "") == -1) {
89 if (add_string (&ret, &size, &alloc, colon) == -1) {
96 if (add_string (&ret, &size, &alloc, p) == -1) {
100 if (add_string (&ret, &size, &alloc, "") == -1) {
111 if (add_string (&ret, &size, &alloc, NULL) == -1)
118 do_set_e2label (const char *device, const char *label)
123 r = command (NULL, &err, "/sbin/e2label", device, label, NULL);
125 reply_with_error ("e2label: %s", err);
135 do_get_e2label (const char *device)
140 r = command (&out, &err, "/sbin/e2label", device, NULL);
142 reply_with_error ("e2label: %s", err);
150 /* Remove any trailing \n from the label. */
152 if (len > 0 && out[len-1] == '\n')
155 return out; /* caller frees */
159 do_set_e2uuid (const char *device, const char *uuid)
164 r = command (NULL, &err, "/sbin/tune2fs", "-U", uuid, device, NULL);
166 reply_with_error ("tune2fs -U: %s", err);
176 do_get_e2uuid (const char *device)
179 char *out, *err, *p, *q;
181 /* It's not so straightforward to get the volume UUID. We have
182 * to use tune2fs -l and then look for a particular string in
186 r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
188 reply_with_error ("tune2fs -l: %s", err);
196 /* Look for /\nFilesystem UUID:\s+/ in the output. */
197 p = strstr (out, "\nFilesystem UUID:");
199 reply_with_error ("no Filesystem UUID in the output of tune2fs -l");
205 while (*p && isspace (*p))
208 reply_with_error ("malformed Filesystem UUID in the output of tune2fs -l");
213 /* Now 'p' hopefully points to the start of the UUID. */
215 while (*q && (isxdigit (*q) || *q == '-'))
218 reply_with_error ("malformed Filesystem UUID in the output of tune2fs -l");
227 reply_with_perror ("strdup");
233 return p; /* caller frees */
237 do_resize2fs (const char *device)
242 r = command (NULL, &err, "/sbin/resize2fs", device, NULL);
244 reply_with_error ("resize2fs: %s", err);
254 do_e2fsck_f (const char *device)
259 r = command (NULL, &err, "/sbin/e2fsck", "-p", "-f", device, NULL);
261 reply_with_error ("e2fsck: %s", err);