Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtksh/ksh93/src/lib/libast/comp/sysconf.c

@@ -0,0 +1,159 @@
+/* $XConsortium: sysconf.c /main/3 1995/11/01 17:20:18 rswiston $ */
+/***************************************************************
+*                                                              *
+*                      AT&T - PROPRIETARY                      *
+*                                                              *
+*        THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF        *
+*                    AT&T BELL LABORATORIES                    *
+*         AND IS NOT TO BE DISCLOSED OR USED EXCEPT IN         *
+*            ACCORDANCE WITH APPLICABLE AGREEMENTS             *
+*                                                              *
+*          Copyright (c) 1994 AT&T Bell Laboratories           *
+*              Unpublished & Not for Publication               *
+*                     All Rights Reserved                      *
+*                                                              *
+*       The copyright notice above does not evidence any       *
+*      actual or intended publication of such source code      *
+*                                                              *
+*               This software was created by the               *
+*           Software Engineering Research Department           *
+*                    AT&T Bell Laboratories                    *
+*                                                              *
+*               For further information contact                *
+*                   advsoft@research.att.com                   *
+*                 Randy Hackbarth 908-582-5245                 *
+*                  Dave Belanger 908-582-7427                  *
+*                                                              *
+***************************************************************/
+
+/* : : generated by proto : : */
+
+#line 1
+
+#if !defined(__PROTO__)
+#if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
+#if defined(__cplusplus)
+#define __MANGLE__	"C"
+#else
+#define __MANGLE__
+#endif
+#define __STDARG__
+#define __PROTO__(x)	x
+#define __OTORP__(x)
+#define __PARAM__(n,o)	n
+#if !defined(__STDC__) && !defined(__cplusplus)
+#if !defined(c_plusplus)
+#define const
+#endif
+#define signed
+#define void		int
+#define volatile
+#define __V_		char
+#else
+#define __V_		void
+#endif
+#else
+#define __PROTO__(x)	()
+#define __OTORP__(x)	x
+#define __PARAM__(n,o)	o
+#define __MANGLE__
+#define __V_		char
+#define const
+#define signed
+#define void		int
+#define volatile
+#endif
+#if defined(__cplusplus) || defined(c_plusplus)
+#define __VARARG__	...
+#else
+#define __VARARG__
+#endif
+#if defined(__STDARG__)
+#define __VA_START__(p,a)	va_start(p,a)
+#else
+#define __VA_START__(p,a)	va_start(p)
+#endif
+#endif
+
+#line 3
+#include <ast.h>
+
+#ifdef _lib_sysconf
+
+NoN(sysconf)
+
+#else
+
+#include <errno.h>
+
+#ifndef errno
+extern __MANGLE__ int		errno;
+#endif
+
+#if _lib_getdtablesize
+extern __MANGLE__ int		getdtablesize __PROTO__((void));
+#else
+#if _lib_getrlimit && _sys_resource
+#include <sys/time.h>
+#include <sys/resource.h>
+extern __MANGLE__ int		getrlimit __PROTO__((int, struct rlimit*));
+#endif
+#endif
+
+long
+sysconf __PARAM__((int op), (op)) __OTORP__(int op;)
+#line 29
+{
+	int	n;
+
+	switch (op)
+	{
+	case _SC_ARG_MAX:
+		return(ARG_MAX);
+	case _SC_CHILD_MAX:
+		return(CHILD_MAX);
+	case _SC_CLK_TCK:
+		return(_AST_CLK_TCK);
+	case _SC_NGROUPS_MAX:
+		if ((n = getgroups(0, (gid_t*)&n)) <= 0) n = NGROUPS_MAX;
+		return(n);
+	case _SC_OPEN_MAX:
+#if _lib_getdtablesize
+		return(getdtablesize());
+#else
+#ifdef RLIMIT_NOFILE
+		{
+			struct rlimit	rlim;
+
+			return(getrlimit(RLIMIT_NOFILE, &rlim) ? OPEN_MAX_CEIL : rlim.rlim_cur);
+		}
+#else
+		return(OPEN_MAX_CEIL);
+#endif
+#endif
+	case _SC_JOB_CONTROL:
+#ifdef _POSIX_JOB_CONTROL
+		return(_POSIX_JOB_CONTROL);
+#else
+		return(-1);
+#endif
+	case _SC_SAVED_IDS:
+#ifdef _POSIX_SAVED_IDS
+		return(_POSIX_SAVED_IDS);
+#else
+		return(-1);
+#endif
+	case _SC_TZNAME_MAX:
+		return(3);
+	case _SC_VERSION:
+#ifdef _POSIX_VERSION
+		return(_POSIX_VERSION);
+#else
+		return(-1);
+#endif
+	}
+	errno = EINVAL;
+	return(-1);
+}
+
+#endif