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