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184 lines
3.5 KiB
C
184 lines
3.5 KiB
C
/* Copyright (C) 1993 Free Software Foundation, Inc.
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Contributed by Brendan Kehoe (brendan@cygnus.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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#include <ansidecl.h>
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#include <errno.h>
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#include <limits.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <time.h>
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#include <sysconfig.h>
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extern int EXFUN(__sysconfig, (int));
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/* Get the value of the system variable NAME. */
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long int
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DEFUN(__sysconf, (name), int name)
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{
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switch (name)
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{
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default:
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errno = EINVAL;
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return -1;
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case _SC_ARG_MAX:
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#ifdef ARG_MAX
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return ARG_MAX;
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#else
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return -1;
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#endif
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case _SC_CHILD_MAX:
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#ifdef CHILD_MAX
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return CHILD_MAX;
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#else
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return -1;
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#endif
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case _SC_CLK_TCK:
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return __sysconfig (_CONFIG_CLK_TCK);
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case _SC_NGROUPS_MAX:
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#ifdef NGROUPS_MAX
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return NGROUPS_MAX;
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#else
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return -1;
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#endif
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/* Both of these are looking for _CONFIG_OPEN_FILES. */
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case _SC_OPEN_MAX:
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case _SC_STREAM_MAX:
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return __sysconfig (_CONFIG_OPEN_FILES);
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case _SC_TZNAME_MAX:
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#ifdef TZNAME_MAX
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return __tzname_max > TZNAME_MAX ? __tzname_max : TZNAME_MAX;
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#else
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return __tzname_max;
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#endif
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case _SC_JOB_CONTROL:
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#ifdef _POSIX_JOB_CONTROL
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return 1;
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#else
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return -1;
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#endif
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case _SC_SAVED_IDS:
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#ifdef _POSIX_SAVED_IDS
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return 1;
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#else
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return -1;
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#endif
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case _SC_VERSION:
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return _POSIX_VERSION;
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case _SC_PAGESIZE:
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return __sysconfig (_CONFIG_PAGESIZE);
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case _SC_BC_BASE_MAX:
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#ifdef BC_BASE_MAX
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return BC_BASE_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_DIM_MAX:
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#ifdef BC_DIM_MAX
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return BC_DIM_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_SCALE_MAX:
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#ifdef BC_SCALE_MAX
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return BC_SCALE_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_STRING_MAX:
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#ifdef BC_STRING_MAX
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return BC_STRING_MAX;
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#else
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return -1;
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#endif
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case _SC_EQUIV_CLASS_MAX:
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#ifdef EQUIV_CLASS_MAX
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return EQUIV_CLASS_MAX;
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#else
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return -1;
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#endif
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case _SC_EXPR_NEST_MAX:
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#ifdef EXPR_NEST_MAX
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return EXPR_NEST_MAX;
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#else
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return -1;
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#endif
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case _SC_LINE_MAX:
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#ifdef LINE_MAX
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return LINE_MAX;
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#else
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return -1;
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#endif
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case _SC_RE_DUP_MAX:
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#ifdef RE_DUP_MAX
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return RE_DUP_MAX;
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#else
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return -1;
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#endif
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case _SC_2_VERSION:
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/* This is actually supposed to return the version
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of the 1003.2 utilities on the system {POSIX2_VERSION}. */
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return _POSIX2_C_VERSION;
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case _SC_2_C_BIND:
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#ifdef _POSIX2_C_BIND
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return _POSIX2_C_BIND;
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#else
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return -1;
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#endif
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case _SC_2_C_DEV:
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#ifdef _POSIX2_C_DEV
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return _POSIX2_C_DEV;
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#else
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return -1;
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#endif
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case _SC_2_FORT_DEV:
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#ifdef _POSIX2_FORT_DEV
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return _POSIX2_FORT_DEV;
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#else
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return -1;
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#endif
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case _SC_2_SW_DEV:
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#ifdef _POSIX2_SW_DEV
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return _POSIX2_SW_DEV;
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#else
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return -1;
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#endif
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}
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}
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