1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
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. |
8 | |
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 |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <unistd.h> |
19 | #include <sys/param.h> |
20 | |
21 | /* Return the system page size. */ |
22 | int |
23 | __getpagesize (void) |
24 | { |
25 | #ifdef EXEC_PAGESIZE |
26 | return EXEC_PAGESIZE; |
27 | #else /* No EXEC_PAGESIZE. */ |
28 | #ifdef NBPG |
29 | #ifndef CLSIZE |
30 | #define CLSIZE 1 |
31 | #endif /* No CLSIZE. */ |
32 | return NBPG * CLSIZE; |
33 | #else /* No NBPG. */ |
34 | return NBPC; |
35 | #endif /* NBPG. */ |
36 | #endif /* EXEC_PAGESIZE. */ |
37 | } |
38 | libc_hidden_def (__getpagesize) |
39 | weak_alias (__getpagesize, getpagesize) |
40 | |