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/* libguestfs - the guestfsd daemon
* Copyright (C) 2011 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#include "daemon.h"
#include "actions.h"
#include "optgroups.h"
int
optgroup_btrfs_available (void)
{
return prog_exists ("btrfs");
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_btrfs_filesystem_resize (const char *filesystem, int64_t size)
{
char *buf;
char *err;
int r;
const char *argv[16];
size_t i = 0;
char size_str[32];
argv[i++] = "btrfs";
argv[i++] = "filesystem";
argv[i++] = "resize";
if (optargs_bitmask & GUESTFS_BTRFS_FILESYSTEM_RESIZE_SIZE_BITMASK) {
if (size <= 0) {
reply_with_error ("size is zero or negative");
return -1;
}
snprintf (size_str, sizeof size_str, "%" PRIi64, size);
argv[i++] = size_str;
}
else
argv[i++] = "max";
buf = sysroot_path (filesystem);
if (!buf) {
reply_with_error ("malloc");
return -1;
}
argv[i++] = buf;
argv[i++] = NULL;
r = commandv (NULL, &err, argv);
free (buf);
if (r == -1) {
reply_with_error ("%s: %s", filesystem, err);
free (err);
return -1;
}
free (err);
return 0;
}
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