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/* Copyright (C) 1992 Free Software Foundation, Inc.
Contributed by Ian Lance Taylor (ian@airs.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/* On Ultrix we can use the getsysinfo call to get the right return
value for _SC_CHILD_MAX. Everything else is from <sys/param.h>,
which the default sysconf already knows how to handle. */
#include <ansidecl.h>
#include <unistd.h>
#include <errno.h>
/* This is an Ultrix header file. */
#include <sys/sysinfo.h>
extern int EXFUN(__getsysinfo, (unsigned int op, void *buffer,
size_t nbytes, int *start,
void *arg));
extern long int EXFUN(__default_sysconf, (int name));
long int
DEFUN(__sysconf, (name), int name)
{
if (name == _SC_CHILD_MAX)
{
int save = errno;
int start = 0;
int ret;
/* getsysinfo returns the number of values it put into the
buffer, or 0 if not available, or -1 on error. */
if (__getsysinfo (GSI_MAX_UPROCS, &ret, sizeof (ret), &start,
(void *) 0) > 0)
{
errno = save;
return ret;
}
errno = save;
}
return __default_sysconf (name);
}
#define __sysconf __default_sysconf
#include <sysdeps/posix/__sysconf.c>
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