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/* Copyright (C) 2007-2013 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
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <sysdep-cancel.h>
extern int __call_fallocate (int fd, int mode, __off64_t offset, __off64_t len)
attribute_hidden;
/* Reserve storage for the data of the file associated with FD. */
int
fallocate (int fd, int mode, __off_t offset, __off_t len)
{
#ifdef __NR_fallocate
int err;
if (SINGLE_THREAD_P)
err = __call_fallocate (fd, mode, offset, len);
else
{
int oldtype = LIBC_CANCEL_ASYNC ();
err = __call_fallocate (fd, mode, offset, len);
LIBC_CANCEL_RESET (oldtype);
}
if (__builtin_expect (err, 0))
{
__set_errno (err);
err = -1;
}
return err;
#else
__set_errno (ENOSYS);
return -1;
#endif
}
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