/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include "lint.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/syscall.h>
extern int __xpg4; /* defined in port/gen/xpg4.c; 0 if not xpg4/xpg4v2 */
int
linkat(int fd1, const char *path1, int fd2, const char *path2, int flag)
{
return (syscall(SYS_linkat, fd1, path1, fd2, path2, flag));
}
#pragma weak _link = link
int
link(const char *path1, const char *path2)
{
/*
* XPG4v2 link() requires that the link count of a symbolic
* link target be updated rather than the link itself. This
* matches SunOS 4.x and other BSD based implementations.
* However, the SVR4 merge apparently introduced the change
* that allowed link(src, dest) when "src" was a symbolic link,
* to create "dest" as a hard link to "src". Hence, the link
* count of the symbolic link is updated rather than the target
* of the symbolic link. This latter behavior remains for
* non-XPG4 based environments. For a more detailed discussion,
* see bug 1256170.
*/
if (__xpg4 != 0)
return (linkat(AT_FDCWD, path1, AT_FDCWD, path2,
AT_SYMLINK_FOLLOW));
#if defined(_RETAIN_OLD_SYSCALLS)
return (syscall(SYS_link, path1, path2));
#else
return (linkat(AT_FDCWD, path1, AT_FDCWD, path2, 0));
#endif
}