mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
0306c98d31
guestfsd calls many different tools. Keeping track of all of them is error prone. This patch introduces a new helper macro to put the command string into its own ELF section: GUESTFSD_EXT_CMD(C_variable, command_name); This syntax makes it still possible to grep for used command names. The actual usage of the collected list could be like this: objcopy -j .guestfsd_ext_cmds -O binary daemon/guestfsd /dev/stdout | tr '\0' '\n' | sort -u The resulting output will be used to tell mkinitrd which programs to copy into the initrd. Signed-off-by: Olaf Hering <olaf@aepfle.de> RWMJ: - Move str_vgchange at request of author. - Fix snprintf call in daemon/debug.c
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/* 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"
|
|
|
|
GUESTFSD_EXT_CMD(str_e2label, e2label);
|
|
GUESTFSD_EXT_CMD(str_ntfslabel, ntfslabel);
|
|
|
|
static int
|
|
e2label (const char *device, const char *label)
|
|
{
|
|
int r;
|
|
char *err;
|
|
|
|
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, str_e2label, 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, str_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;
|
|
}
|