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/* libguestfs - the guestfsd daemon
* Copyright (C) 2012 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "daemon.h"
#include "actions.h"
#include "optgroups.h"
static int
e2label (const char *device, const char *label)
{
int r;
char *err;
char prog[] = "e2label";
if (e2prog (prog) == -1)
return -1;
if (strlen (label) > EXT2_LABEL_MAX) {
reply_with_error ("%s: ext2 labels are limited to %d bytes",
label, EXT2_LABEL_MAX);
return -1;
}
r = command (NULL, &err, prog, device, label, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
return -1;
}
free (err);
return 0;
}
static int
ntfslabel (const char *device, const char *label)
{
int r;
char *err;
/* XXX We should check if the label is longer than 128 unicode
* characters and return an error. This is not so easy since we
* don't have the required libraries.
*/
r = command (NULL, &err, "ntfslabel", device, label, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
return -1;
}
free (err);
return 0;
}
int
do_set_label (const char *device, const char *label)
{
char *vfs_type;
int r;
/* How we set the label depends on the filesystem type. */
vfs_type = do_vfs_type (device);
if (vfs_type == NULL)
return -1;
if (STREQ (vfs_type, "ext2") || STREQ (vfs_type, "ext3")
|| STREQ (vfs_type, "ext4"))
r = e2label (device, label);
else if (STREQ (vfs_type, "ntfs"))
r = ntfslabel (device, label);
else {
reply_with_error ("don't know how to set the label for '%s' filesystems",
vfs_type);
r = -1;
}
free (vfs_type);
return r;
}
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