/* $OpenBSD: linux_getcwd.c,v 1.2 2001/05/16 12:50:21 ho Exp $ */ /* $NetBSD: vfs_getcwd.c,v 1.3.2.3 1999/07/11 10:24:09 sommerfeld Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1999 The NetBSD Foundation, Inc. * Copyright (c) 2015 The FreeBSD Foundation * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Bill Sommerfeld. * * Portions of this software were developed by Edward Tomasz Napierala * under sponsorship from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #ifdef COMPAT_LINUX32 #include #include #else #include #include #endif #include /* * Find pathname of process's current directory. */ int linux_getcwd(struct thread *td, struct linux_getcwd_args *uap) { char *buf, *retbuf; size_t buflen; int error; buflen = uap->bufsize; if (__predict_false(buflen < 2)) return (ERANGE); if (buflen > LINUX_PATH_MAX) buflen = LINUX_PATH_MAX; buf = malloc(buflen, M_TEMP, M_WAITOK); error = vn_getcwd(buf, &retbuf, &buflen); if (error == ENOMEM) error = ERANGE; if (error == 0) { error = copyout(retbuf, uap->buf, buflen); if (error == 0) td->td_retval[0] = buflen; } free(buf, M_TEMP); return (error); }