libexplain  1.4.D001
libexplain/symloopmax.c
Go to the documentation of this file.
00001 /*
00002  * libexplain - Explain errno values returned by libc functions
00003  * Copyright (C) 2008, 2009, 2013 Peter Miller
00004  * Written by Peter Miller <pmiller@opensource.org.au>
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU Lesser General Public License as
00008  * published by the Free Software Foundation; either version 3 of the
00009  * License, or (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public License
00017  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00018  */
00019 
00020 #include <libexplain/ac/sys/param.h>
00021 #include <libexplain/ac/unistd.h>
00022 
00023 #include <libexplain/symloopmax.h>
00024 
00025 
00026 int
00027 explain_symloopmax(void)
00028 {
00029     int             result;
00030 
00031     result = -1;
00032 #ifdef _SC_SYMLOOP_MAX
00033     /* <unistd.h> */
00034     result = sysconf(_SC_SYMLOOP_MAX);
00035 #endif
00036 #ifdef SYMLOOP_MAX
00037     /* sys/param.h> */
00038     if (result <= 0)
00039         result = SYMLOOP_MAX;
00040 #endif
00041 #ifdef _POSIX_SYMLOOP_MAX
00042     /* sys/param.h> */
00043     if (result <= 0)
00044         result = _POSIX_SYMLOOP_MAX;
00045 #endif
00046 
00047     /* if all else fails, fake it */
00048     if (result <= 0)
00049         result = 8;
00050     return result;
00051 }
00052 
00053 
00054 /* vim: set ts=8 sw=4 et : */