1 /* vi: set sw=4 ts=4: */
3 * posix_fadvise() for ARM uClibc
4 * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html
6 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
8 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
10 #include <sys/syscall.h>
13 #if defined __NR_arm_fadvise64_64
15 #define HIGH_BITS(x) (sizeof(x) > 4 ? (x) >> 32 : 0)
17 /* Was named __libc_posix_fadvise for some inexplicable reason.
18 ** google says only uclibc has *__libc*_posix_fadviseXXX,
19 ** so it cannot be compat with anything.
21 ** Remove this comment and one at the end after 0.9.31
24 /* This is for the ARM version of fadvise64_64 which swaps the params
25 * * about to avoid having ABI compat issues
27 #define __NR___syscall_arm_fadvise64_64 __NR_arm_fadvise64_64
28 int posix_fadvise(int fd, off_t offset, off_t len, int advise)
30 INTERNAL_SYSCALL_DECL (err);
31 int ret = INTERNAL_SYSCALL (arm_fadvise64_64, err, 6, fd, advise,
32 __LONG_LONG_PAIR (HIGH_BITS(offset), (long)offset),
33 __LONG_LONG_PAIR (HIGH_BITS(len), (long)len));
35 if (INTERNAL_SYSCALL_ERROR_P (ret, err))
36 return INTERNAL_SYSCALL_ERRNO (ret, err);
40 /* weak_alias(__libc_posix_fadvise, posix_fadvise); */
44 int posix_fadvise(int fd attribute_unused, off_t offset attribute_unused, off_t len attribute_unused, int advice attribute_unused)