| /* Copyright (C) 1991,92,93,94,95,97,2000 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 <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 () |
| { |
| 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) |
