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/* Copyright (C) 2003-2017 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);
/* 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.
tile requires __ASSUME_ALIGNED_REGISTER_PAIRS but implements the 32-bit
fadvise64_64 without the padding 0 after fd.
s390 implements fadvice64_64 using a specific struct with arguments
packed inside. This is the only implementation handled in arch-specific
code. */
#ifdef __ASSUME_FADVISE64_64_NO_ALIGN
# undef __ALIGNMENT_ARG
# define __ALIGNMENT_ARG
#endif
#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
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