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/* vi: set sw=4 ts=4: */
/*
* posix_fadvise() for 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 <sys/syscall.h>
#ifdef __NR_fadvise64
# include <fcntl.h>
# include <endian.h>
# include <bits/wordsize.h>
int posix_fadvise(int fd, off_t offset, off_t len, int advice)
{
int ret;
INTERNAL_SYSCALL_DECL(err);
# if __WORDSIZE == 64
ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice);
# else
# ifdef __powerpc__
ret = INTERNAL_SYSCALL(fadvise64, err, 6, fd, /*unused*/0,
# else
ret = INTERNAL_SYSCALL(fadvise64, err, 5, fd,
# endif
__LONG_LONG_PAIR (offset >> 31, offset), len, advice);
# endif
if (INTERNAL_SYSCALL_ERROR_P (ret, err))
return INTERNAL_SYSCALL_ERRNO (ret, err);
return 0;
}
# if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || __WORDSIZE == 64)
strong_alias(posix_fadvise,posix_fadvise64)
# endif
#endif
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