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/* libguestfs - the guestfsd daemon
* Copyright (C) 2015 Maxim Perevedentsev mperevedentsev@virtuozzo.com
*
* 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 <unistd.h>
#include "daemon.h"
#include "actions.h"
static char*
get_mount_point (const char *device)
{
CLEANUP_FREE_STRING_LIST char **mountpoints = do_mountpoints();
size_t i;
char *path;
if (mountpoints == NULL) {
reply_with_error ("cannot get mountpoints");
return NULL;
}
for (i = 0; mountpoints[i] != NULL; i += 2) {
if (STREQ (mountpoints[i], device)) {
path = strdup (mountpoints[i + 1]);
if (path == NULL)
reply_with_perror ("strdup");
return path;
}
}
reply_with_error ("device not mounted: %s", device);
return NULL;
}
int64_t
do_vfs_minimum_size (const mountable_t *mountable)
{
int64_t r;
/* How we get minimum size depends on the filesystem type. */
CLEANUP_FREE char *vfs_type = do_vfs_type (mountable);
if (vfs_type == NULL)
return -1;
else if (fstype_is_extfs (vfs_type))
r = ext_minimum_size (mountable->device);
else if (STREQ (vfs_type, "ntfs"))
r = ntfs_minimum_size (mountable->device);
else if (STREQ (vfs_type, "btrfs")) {
CLEANUP_FREE char *path = get_mount_point (mountable->device);
if (path == NULL)
return -1;
r = btrfs_minimum_size (path);
}
else if (STREQ (vfs_type, "xfs")) {
CLEANUP_FREE char *path = get_mount_point (mountable->device);
if (path == NULL)
return -1;
r = xfs_minimum_size (path);
}
else
NOT_SUPPORTED (-1, "don't know how to get minimum size of '%s' filesystems",
vfs_type);
return r;
}
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