182518Sgallatin/* $OpenBSD: linux_getcwd.c,v 1.2 2001/05/16 12:50:21 ho Exp $ */ 282518Sgallatin/* $NetBSD: vfs_getcwd.c,v 1.3.2.3 1999/07/11 10:24:09 sommerfeld Exp $ */ 382518Sgallatin/*- 482518Sgallatin * Copyright (c) 1999 The NetBSD Foundation, Inc. 5281882Strasz * Copyright (c) 2015 The FreeBSD Foundation 682518Sgallatin * All rights reserved. 782518Sgallatin * 882518Sgallatin * This code is derived from software contributed to The NetBSD Foundation 982518Sgallatin * by Bill Sommerfeld. 1082518Sgallatin * 11281882Strasz * Portions of this software were developed by Edward Tomasz Napierala 12281882Strasz * under sponsorship from the FreeBSD Foundation. 13281882Strasz * 1482518Sgallatin * Redistribution and use in source and binary forms, with or without 1582518Sgallatin * modification, are permitted provided that the following conditions 1682518Sgallatin * are met: 1782518Sgallatin * 1. Redistributions of source code must retain the above copyright 1882518Sgallatin * notice, this list of conditions and the following disclaimer. 1982518Sgallatin * 2. Redistributions in binary form must reproduce the above copyright 2082518Sgallatin * notice, this list of conditions and the following disclaimer in the 2182518Sgallatin * documentation and/or other materials provided with the distribution. 2282518Sgallatin * 2382518Sgallatin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2482518Sgallatin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2582518Sgallatin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2682518Sgallatin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 2782518Sgallatin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2882518Sgallatin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2982518Sgallatin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3082518Sgallatin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 3182518Sgallatin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3282518Sgallatin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3382518Sgallatin * POSSIBILITY OF SUCH DAMAGE. 3482518Sgallatin */ 35116173Sobrien 36116173Sobrien#include <sys/cdefs.h> 37116173Sobrien__FBSDID("$FreeBSD$"); 38116173Sobrien 39156874Sru#include "opt_compat.h" 4082518Sgallatin 4182518Sgallatin#include <sys/param.h> 4282518Sgallatin#include <sys/systm.h> 43102872Siedowse#include <sys/syscallsubr.h> 4482518Sgallatin#include <sys/proc.h> 45112430Sphk#include <sys/malloc.h> 4682518Sgallatin 47140214Sobrien#ifdef COMPAT_LINUX32 48140214Sobrien#include <machine/../linux32/linux.h> 49140214Sobrien#include <machine/../linux32/linux32_proto.h> 50140214Sobrien#else 5182518Sgallatin#include <machine/../linux/linux.h> 5282518Sgallatin#include <machine/../linux/linux_proto.h> 53133816Stjr#endif 54281829Strasz#include <compat/linux/linux_misc.h> 55112430Sphk#include <compat/linux/linux_util.h> 5682518Sgallatin 5782518Sgallatin/* 5882518Sgallatin * Find pathname of process's current directory. 5982518Sgallatin */ 6082518Sgallatinint 6183366Sjulianlinux_getcwd(struct thread *td, struct linux_getcwd_args *args) 6282518Sgallatin{ 63281882Strasz char *path; 64281882Strasz int error, lenused; 65112430Sphk 66112430Sphk#ifdef DEBUG 67164379Skib if (ldebug(getcwd)) 68164383Skib printf(ARGS(getcwd, "%p, %ld"), args->buf, (long)args->bufsize); 69112430Sphk#endif 70112430Sphk 71281882Strasz /* 72281882Strasz * Linux returns ERANGE instead of EINVAL. 73281882Strasz */ 74281882Strasz if (args->bufsize < 2) 75281882Strasz return (ERANGE); 76112430Sphk 77283427Sdchagin path = malloc(LINUX_PATH_MAX, M_LINUX, M_WAITOK); 78112430Sphk 79281882Strasz error = kern___getcwd(td, path, UIO_SYSSPACE, args->bufsize, 80281882Strasz LINUX_PATH_MAX); 81281882Strasz if (error == 0) { 82112430Sphk lenused = strlen(path) + 1; 83281882Strasz error = copyout(path, args->buf, lenused); 84281882Strasz if (error == 0) 85112430Sphk td->td_retval[0] = lenused; 86281882Strasz } 87112430Sphk 88283427Sdchagin free(path, M_LINUX); 89112430Sphk return (error); 9082518Sgallatin} 91