| /* Copyright (C) 1991-2018 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 <limits.h> |
| #include <unistd.h> |
| #include <sys/resource.h> |
| |
| /* Return the maximum number of file descriptors |
| the current process could possibly have. */ |
| int |
| __getdtablesize (void) |
| { |
| struct rlimit ru; |
| |
| /* This should even work if `getrlimit' is not implemented. POSIX.1 |
| does not define this function but we will generate a stub which |
| returns -1. */ |
| return __getrlimit (RLIMIT_NOFILE, &ru) < 0 ? OPEN_MAX : ru.rlim_cur; |
| } |
| |
| weak_alias (__getdtablesize, getdtablesize) |