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04277e02 | 1 | /* Copyright (C) 1991-2019 Free Software Foundation, Inc. |
478b92f0 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
478b92f0 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
478b92f0 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
23396375 | 18 | #include <limits.h> |
28f540f4 | 19 | #include <unistd.h> |
23396375 | 20 | #include <sys/resource.h> |
28f540f4 RM |
21 | |
22 | /* Return the maximum number of file descriptors | |
23 | the current process could possibly have. */ | |
24 | int | |
23396375 | 25 | __getdtablesize (void) |
28f540f4 | 26 | { |
23396375 UD |
27 | struct rlimit ru; |
28 | ||
29 | /* This should even work if `getrlimit' is not implemented. POSIX.1 | |
30 | does not define this function but we will generate a stub which | |
31 | returns -1. */ | |
32 | return __getrlimit (RLIMIT_NOFILE, &ru) < 0 ? OPEN_MAX : ru.rlim_cur; | |
28f540f4 RM |
33 | } |
34 | ||
35 | weak_alias (__getdtablesize, getdtablesize) |