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/* libguestfs - the guestfsd daemon
* Copyright (C) 2010-2020 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 <sys/types.h>
#include <sys/stat.h>
#include "guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
static int get_mode (const char *path, mode_t *mode, int followsymlinks);
int
do_exists (const char *path)
{
return get_mode (path, NULL, 0);
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_is_chardev (const char *path, int followsymlinks)
{
mode_t mode;
int r;
if (!(optargs_bitmask & GUESTFS_IS_CHARDEV_FOLLOWSYMLINKS_BITMASK))
followsymlinks = 0;
r = get_mode (path, &mode, followsymlinks);
if (r <= 0) return r;
return S_ISCHR (mode);
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_is_blockdev (const char *path, int followsymlinks)
{
mode_t mode;
int r;
if (!(optargs_bitmask & GUESTFS_IS_BLOCKDEV_FOLLOWSYMLINKS_BITMASK))
followsymlinks = 0;
r = get_mode (path, &mode, followsymlinks);
if (r <= 0) return r;
return S_ISBLK (mode);
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_is_fifo (const char *path, int followsymlinks)
{
mode_t mode;
int r;
if (!(optargs_bitmask & GUESTFS_IS_FIFO_FOLLOWSYMLINKS_BITMASK))
followsymlinks = 0;
r = get_mode (path, &mode, followsymlinks);
if (r <= 0) return r;
return S_ISFIFO (mode);
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_is_socket (const char *path, int followsymlinks)
{
mode_t mode;
int r;
if (!(optargs_bitmask & GUESTFS_IS_SOCKET_FOLLOWSYMLINKS_BITMASK))
followsymlinks = 0;
r = get_mode (path, &mode, followsymlinks);
if (r <= 0) return r;
return S_ISSOCK (mode);
}
static int
get_mode (const char *path, mode_t *mode, int followsymlinks)
{
int r;
struct stat buf;
CHROOT_IN;
r = (!followsymlinks ? lstat : stat) (path, &buf);
CHROOT_OUT;
if (r == -1) {
if (errno != ENOENT && errno != ENOTDIR) {
reply_with_perror ("stat: %s", path);
return -1;
}
else
return 0; /* Doesn't exist, means return false. */
}
if (mode)
*mode = buf.st_mode;
return 1;
}
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