glibc/sysdeps/unix/sysv/linux/fallocate.c

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/* Copyright (C) 2007, 2009 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <fcntl.h>
#include <sysdep.h>
/* Reserve storage for the data of the file associated with FD. */
int
fallocate (int fd, int mode, __off_t offset, __off_t len)
{
return INLINE_SYSCALL (fallocate, err, 6, fd, mode,
__LONG_LONG_PAIR (offset >> 31, offset),
__LONG_LONG_PAIR (len >> 31, len));
}