/* Copyright (C) 2007 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
. */
#include
#include
#include
#define posix_fallocate static internal_fallocate
#include
#undef posix_fallocate
#if !defined __ASSUME_FALLOCATE && defined __NR_fallocate
static int __have_fallocate;
#endif
/* Reserve storage for the data of the file associated with FD. */
int
posix_fallocate (int fd, __off_t offset, __off_t len)
{
#ifdef __NR_fallocate
# ifndef __ASSUME_FALLOCATE
if (__builtin_expect (__have_fallocate >= 0, 1))
# endif
{
INTERNAL_SYSCALL_DECL (err);
# ifdef INTERNAL_SYSCALL_TYPES
int res = INTERNAL_SYSCALL_TYPES (fallocate, err, 4, int, fd,
int, 0, off_t, offset,
off_t, len);
# else
int res = INTERNAL_SYSCALL (fallocate, err, 4, fd, 0, offset, len);
# endif
if (! INTERNAL_SYSCALL_ERROR_P (res, err))
return 0;
# ifndef __ASSUME_FALLOCATE
if (__builtin_expect (INTERNAL_SYSCALL_ERRNO (res, err) == ENOSYS, 0))
__have_fallocate = -1;
else
# endif
if (INTERNAL_SYSCALL_ERRNO (res, err) != EOPNOTSUPP)
return INTERNAL_SYSCALL_ERRNO (res, err);
}
#endif
return internal_fallocate (fd, offset, len);
}
strong_alias (posix_fallocate, posix_fallocate64)