/* Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <fcntl.h>

#include <shlib-compat.h>

int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);

libc_hidden_proto (__posix_fadvise64_l64)

/* Both arm and powerpc implements fadvise64_64 with last 'advise' argument

   just after 'fd' to avoid the requirement of implementing 7-arg syscalls.

   ARM also defines __NR_fadvise64_64 as __NR_arm_fadvise64_64.

   s390 implements fadvice64_64 using a specific struct with arguments

   packed inside.  This is the only implementation handled in arch-specific

   code.  */

#ifndef __NR_fadvise64_64

# define __NR_fadvise64_64 __NR_fadvise64

#endif

/* Advice the system about the expected behaviour of the application with

   respect to the file associated with FD.  */

int

__posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)

{

  INTERNAL_SYSCALL_DECL (err);

#ifdef __ASSUME_FADVISE64_64_6ARG

  int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd, advise,

				   SYSCALL_LL64 (offset), SYSCALL_LL64 (len));

#else

  int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd,

				   __ALIGNMENT_ARG SYSCALL_LL64 (offset),

				   SYSCALL_LL64 (len), advise);

#endif

  if (!INTERNAL_SYSCALL_ERROR_P (ret, err))

    return 0;

  return INTERNAL_SYSCALL_ERRNO (ret, err);

}

/* The type of the len argument was changed from size_t to off_t in

   POSIX.1-2003 TC1.  */

#ifndef __OFF_T_MATCHES_OFF64_T

# if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)

int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);

int

attribute_compat_text_section

__posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)

{

  return __posix_fadvise64_l64 (fd, offset, len, advise);

}

versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);

compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);

# else

weak_alias (__posix_fadvise64_l64, posix_fadvise64);

# endif

#else

weak_alias (__posix_fadvise64_l64, posix_fadvise64);

strong_alias (__posix_fadvise64_l64, posix_fadvise);

#endif

libc_hidden_def (__posix_fadvise64_l64)