mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-01 17:30:07 +00:00
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/* 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
|