62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* Copyright (C) 1992 Free Software Foundation, Inc.
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Contributed by Ian Lance Taylor (ian@airs.com).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* On Ultrix we can use the getsysinfo call to get the right return
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value for _SC_CHILD_MAX. Everything else is from <sys/param.h>,
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which the default sysconf already knows how to handle. */
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#include <ansidecl.h>
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#include <unistd.h>
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#include <errno.h>
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/* This is an Ultrix header file. */
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#include <sys/sysinfo.h>
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extern int EXFUN(__getsysinfo, (unsigned int op, void *buffer,
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size_t nbytes, int *start,
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void *arg));
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extern long int EXFUN(__default_sysconf, (int name));
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long int
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DEFUN(__sysconf, (name), int name)
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{
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if (name == _SC_CHILD_MAX)
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{
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int save = errno;
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int start = 0;
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int ret;
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/* getsysinfo returns the number of values it put into the
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buffer, or 0 if not available, or -1 on error. */
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if (__getsysinfo (GSI_MAX_UPROCS, &ret, sizeof (ret), &start,
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(void *) 0) > 0)
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{
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errno = save;
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return ret;
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}
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errno = save;
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}
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return __default_sysconf (name);
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}
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#define __sysconf __default_sysconf
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#include <sysdeps/posix/__sysconf.c>
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