xref: /src/sys/compat/linux/common/linux_fadvise64.c

/*	$NetBSD: linux_fadvise64.c,v 1.1 2011/05/30 17:50:32 alnsn Exp $	*/

/*-
 * Copyright (c) 2011 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_fadvise64.c,v 1.1 2011/05/30 17:50:32 alnsn Exp $");

#include <sys/param.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/mount.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/tty.h>
#include <sys/socketvar.h>
#include <sys/conf.h>
#include <sys/pipe.h>

#include <machine/limits.h>

#include <sys/syscall.h>
#include <sys/syscallargs.h>

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_machdep.h>
#include <compat/linux/common/linux_misc.h>

#include <compat/linux/linux_syscallargs.h>


int
linux_sys_fadvise64(struct lwp *l,
    const struct linux_sys_fadvise64_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) fd;
		syscallarg(linux_off_t) offset;
		syscallarg(size_t) len;
		syscallarg(int) advice;
	} */

	size_t len = SCARG(uap, len);

	if (sizeof(len) == sizeof(linux_off_t) && len > SSIZE_MAX)
		return (EINVAL);

	return do_posix_fadvise(SCARG(uap, fd),
	    SCARG(uap, offset), len, linux_to_bsd_posix_fadv(SCARG(uap, advice)));
}