17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
59a70fc3bSMark J. Nelson * Common Development and Distribution License (the "License").
69a70fc3bSMark J. Nelson * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate
227c478bd9Sstevel@tonic-gate /*
23*794f0adbSRoger A. Faulkner * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
26*794f0adbSRoger A. Faulkner #include "lint.h"
27*794f0adbSRoger A. Faulkner #include <sys/syscall.h>
28*794f0adbSRoger A. Faulkner #include <sys/unistd.h>
29*794f0adbSRoger A. Faulkner #include <sys/fcntl.h>
30*794f0adbSRoger A. Faulkner
31*794f0adbSRoger A. Faulkner ssize_t
readlinkat(int fd,const char * path,char * buf,size_t bufsize)32*794f0adbSRoger A. Faulkner readlinkat(int fd, const char *path, char *buf, size_t bufsize)
33*794f0adbSRoger A. Faulkner {
34*794f0adbSRoger A. Faulkner sysret_t rval;
35*794f0adbSRoger A. Faulkner int error;
36*794f0adbSRoger A. Faulkner
37*794f0adbSRoger A. Faulkner error = __systemcall(&rval, SYS_readlinkat, fd, path, buf, bufsize);
38*794f0adbSRoger A. Faulkner if (error)
39*794f0adbSRoger A. Faulkner (void) __set_errno(error);
40*794f0adbSRoger A. Faulkner return ((ssize_t)rval.sys_rval1);
41*794f0adbSRoger A. Faulkner }
42*794f0adbSRoger A. Faulkner
43*794f0adbSRoger A. Faulkner #pragma weak _readlink = readlink
44*794f0adbSRoger A. Faulkner ssize_t
readlink(const char * path,char * buf,size_t bufsize)45*794f0adbSRoger A. Faulkner readlink(const char *path, char *buf, size_t bufsize)
46*794f0adbSRoger A. Faulkner {
47*794f0adbSRoger A. Faulkner #if defined(_RETAIN_OLD_SYSCALLS)
48*794f0adbSRoger A. Faulkner sysret_t rval;
49*794f0adbSRoger A. Faulkner int error;
50*794f0adbSRoger A. Faulkner
51*794f0adbSRoger A. Faulkner error = __systemcall(&rval, SYS_readlink, path, buf, bufsize);
52*794f0adbSRoger A. Faulkner if (error)
53*794f0adbSRoger A. Faulkner (void) __set_errno(error);
54*794f0adbSRoger A. Faulkner return ((ssize_t)rval.sys_rval1);
55*794f0adbSRoger A. Faulkner #else
56*794f0adbSRoger A. Faulkner return (readlinkat(AT_FDCWD, path, buf, bufsize));
57*794f0adbSRoger A. Faulkner #endif
58*794f0adbSRoger A. Faulkner }
59