1 /* $OpenBSD: linux_getcwd.c,v 1.2 2001/05/16 12:50:21 ho Exp $ */
2 /* $NetBSD: vfs_getcwd.c,v 1.3.2.3 1999/07/11 10:24:09 sommerfeld Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1999 The NetBSD Foundation, Inc.
7 * Copyright (c) 2015 The FreeBSD Foundation
10 * This code is derived from software contributed to The NetBSD Foundation
13 * Portions of this software were developed by Edward Tomasz Napierala
14 * under sponsorship from the FreeBSD Foundation.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include "opt_compat.h"
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/vnode.h>
47 #include <sys/malloc.h>
50 #include <machine/../linux32/linux.h>
51 #include <machine/../linux32/linux32_proto.h>
53 #include <machine/../linux/linux.h>
54 #include <machine/../linux/linux_proto.h>
56 #include <compat/linux/linux_misc.h>
57 #include <compat/linux/linux_util.h>
60 * Find pathname of process's current directory.
63 linux_getcwd(struct thread *td, struct linux_getcwd_args *uap)
69 buflen = uap->bufsize;
70 if (__predict_false(buflen < 2))
72 if (buflen > LINUX_PATH_MAX)
73 buflen = LINUX_PATH_MAX;
75 buf = malloc(buflen, M_TEMP, M_WAITOK);
76 error = vn_getcwd(buf, &retbuf, &buflen);
80 error = copyout(retbuf, uap->buf, buflen);
82 td->td_retval[0] = buflen;