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/* Copyright (C) 1991-2021 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <hurd/resource.h>
/* Return the maximum number of file descriptors the current process
could possibly have (until it raises the resource limit). */
int
__getdtablesize (void)
{
rlim_t limit;
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_rlimit_lock);
limit = _hurd_rlimits[RLIMIT_NOFILE].rlim_cur;
__mutex_unlock (&_hurd_rlimit_lock);
HURD_CRITICAL_END;
/* RLIM_INFINITY is not meaningful to our caller. -1 is a good choice
because `sysconf (_SC_OPEN_MAX)' calls us, and -1 from sysconf means
"no determinable limit". */
return limit == RLIM_INFINITY ? -1 : (int) limit;
}
weak_alias (__getdtablesize, getdtablesize)
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