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-rw-r--r--sysdeps/posix/sysconf.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c
new file mode 100644
index 0000000000..7f4fbb7261
--- /dev/null
+++ b/sysdeps/posix/sysconf.c
@@ -0,0 +1,183 @@
+/* Copyright (C) 1991, 1993, 1995 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
+ }
+}
+
+weak_alias (__sysconf, sysconf)