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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2016 Joyent, Inc.
*/
#include <sys/types.h>
#include <sys/filio.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/lx_fcntl.h>
#include <sys/lx_misc.h>
/* From usr/src/uts/common/syscall/fcntl.c */
extern int fcntl(int, int, intptr_t);
long
lx_dup(int fd)
{
return (fcntl(fd, F_DUPFD, 0));
}
long
lx_dup2(int oldfd, int newfd)
{
return (fcntl(oldfd, F_DUP2FD, newfd));
}
long
lx_dup3(int oldfd, int newfd, int flags)
{
int rc;
/* The only valid flag is O_CLOEXEC. */
if (flags & ~LX_O_CLOEXEC)
return (set_errno(EINVAL));
/* Only DUP2FD_CLOEXEC returns EINVAL on the same fd's */
if (oldfd == newfd)
return (set_errno(EINVAL));
rc = fcntl(oldfd, (flags == 0) ? F_DUP2FD : F_DUP2FD_CLOEXEC, newfd);
return (rc);
}
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