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/* vi: set sw=4 ts=4: */
/*
* posix_fadvise64() for ARM uClibc
* http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html
*
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <features.h>
#include <unistd.h>
#include <errno.h>
#include <endian.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <fcntl.h>
#ifdef __UCLIBC_HAS_LFS__
#if defined __NR_arm_fadvise64_64
/* This is for the ARM version of fadvise64_64 which swaps the params
* about to avoid having ABI compat issues
*/
#define __NR___syscall_arm_fadvise64_64 __NR_arm_fadvise64_64
int __libc_posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advise)
{
INTERNAL_SYSCALL_DECL (err);
int ret = INTERNAL_SYSCALL (arm_fadvise64_64, err, 6, fd, advise,
__LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
__LONG_LONG_PAIR ((long)(len >> 32), (long)len));
if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
return 0;
if (INTERNAL_SYSCALL_ERRNO (ret, err) != ENOSYS)
return INTERNAL_SYSCALL_ERRNO (ret, err);
return 0;
}
weak_alias(__libc_posix_fadvise64, posix_fadvise64);
#else
int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advise)
{
__set_errno(ENOSYS);
return -1;
}
#endif
#endif
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