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- /* Copyright (C) 1991, 1993 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- 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. */
-
- #include <ansidecl.h>
- #include <errno.h>
- #include <limits.h>
- #include <unistd.h>
- #include <stddef.h>
- #include <stdio.h>
- #include <time.h>
-
- extern int EXFUN(__getdtablesize, (NOARGS));
- extern size_t EXFUN(__getpagesize, (NOARGS));
-
- /* Get the value of the system variable NAME. */
- long int
- DEFUN(__sysconf, (name), int name)
- {
- switch (name)
- {
- default:
- errno = EINVAL;
- return -1;
-
- case _SC_ARG_MAX:
- #ifdef ARG_MAX
- return ARG_MAX;
- #else
- return -1;
- #endif
-
- case _SC_CHILD_MAX:
- #ifdef CHILD_MAX
- return CHILD_MAX;
- #else
- return -1;
- #endif
-
- case _SC_CLK_TCK:
- return 60;
-
- case _SC_NGROUPS_MAX:
- #ifdef NGROUPS_MAX
- return NGROUPS_MAX;
- #else
- return -1;
- #endif
-
- case _SC_OPEN_MAX:
- return __getdtablesize ();
-
- case _SC_STREAM_MAX:
- return FOPEN_MAX;
-
- case _SC_TZNAME_MAX:
- return __tzname_max ();
-
- case _SC_JOB_CONTROL:
- #ifdef _POSIX_JOB_CONTROL
- return 1;
- #else
- return -1;
- #endif
- case _SC_SAVED_IDS:
- #ifdef _POSIX_SAVED_IDS
- return 1;
- #else
- return -1;
- #endif
- case _SC_VERSION:
- return _POSIX_VERSION;
-
- case _SC_PAGESIZE:
- return __getpagesize ();
-
- case _SC_BC_BASE_MAX:
- #ifdef BC_BASE_MAX
- return BC_BASE_MAX;
- #else
- return -1;
- #endif
-
- case _SC_BC_DIM_MAX:
- #ifdef BC_DIM_MAX
- return BC_DIM_MAX;
- #else
- return -1;
- #endif
-
- case _SC_BC_SCALE_MAX:
- #ifdef BC_SCALE_MAX
- return BC_SCALE_MAX;
- #else
- return -1;
- #endif
-
- case _SC_BC_STRING_MAX:
- #ifdef BC_STRING_MAX
- return BC_STRING_MAX;
- #else
- return -1;
- #endif
-
- case _SC_EQUIV_CLASS_MAX:
- #ifdef EQUIV_CLASS_MAX
- return EQUIV_CLASS_MAX;
- #else
- return -1;
- #endif
-
- case _SC_EXPR_NEST_MAX:
- #ifdef EXPR_NEST_MAX
- return EXPR_NEST_MAX;
- #else
- return -1;
- #endif
-
- case _SC_LINE_MAX:
- #ifdef LINE_MAX
- return LINE_MAX;
- #else
- return -1;
- #endif
-
- case _SC_RE_DUP_MAX:
- #ifdef RE_DUP_MAX
- return RE_DUP_MAX;
- #else
- return -1;
- #endif
-
-
- case _SC_2_VERSION:
- /* This is actually supposed to return the version
- of the 1003.2 utilities on the system {POSIX2_VERSION}. */
- return _POSIX2_C_VERSION;
-
- case _SC_2_C_BIND:
- #ifdef _POSIX2_C_BIND
- return _POSIX2_C_BIND;
- #else
- return -1;
- #endif
-
- case _SC_2_C_DEV:
- #ifdef _POSIX2_C_DEV
- return _POSIX2_C_DEV;
- #else
- return -1;
- #endif
-
- case _SC_2_FORT_DEV:
- #ifdef _POSIX2_FORT_DEV
- return _POSIX2_FORT_DEV;
- #else
- return -1;
- #endif
-
- case _SC_2_SW_DEV:
- #ifdef _POSIX2_SW_DEV
- return _POSIX2_SW_DEV;
- #else
- return -1;
- #endif
- }
- }
-