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linux: posix_fadvise: support __NR_fadvise64_64

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Some arches do not have a __NR_fadvise64 but do have __NR_fadvise64_64.
If the former is unavailable, fallback to the latter.

Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2012-12-06 15:01:35 -05:00
parent 270a72ed73
commit e933a9432c
2 changed files with 17 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2012-12-06 Carlos O'Donell <carlos@systemhalted.org>
Mike Frysinger <vapier@gentoo.org>
* sysdeps/unix/sysv/linux/posix_fadvise.c (posix_fadvise): Also
check for __NR_fadvise64_64.
2012-12-06 Chris Metcalf <cmetcalf@tilera.com>
* sysdeps/generic/fpu_control.h (_FPU_GETCW): Define to set cw to

13
sysdeps/unix/sysv/linux/posix_fadvise.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2003 Free Software Foundation, Inc.
/* Copyright (C) 2003-2012 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
@ -25,11 +25,20 @@
int
posix_fadvise (int fd, off_t offset, off_t len, int advise)
{
#ifdef __NR_fadvise64
#if defined(__NR_fadvise64) || defined(__NR_fadvise64_64)
INTERNAL_SYSCALL_DECL (err);
# ifdef __NR_fadvise64
int ret = INTERNAL_SYSCALL (fadvise64, err, 5, fd,
__LONG_LONG_PAIR (offset >> 31, offset), len,
advise);
# else
int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd,
__LONG_LONG_PAIR ((long) (offset >> 31),
(long) offset),
__LONG_LONG_PAIR ((long) (len >> 31),
(long) len),
advise);
# endif
if (INTERNAL_SYSCALL_ERROR_P (ret, err))
return INTERNAL_SYSCALL_ERRNO (ret, err);
return 0;