From 5c07cc94205d347625397ea0dec09414dc6a2c6b Mon Sep 17 00:00:00 2001
From: millert <millert@openbsd.org>
Date: Fri, 7 May 2004 18:39:19 +0000
Subject: Implement _SC_SEM_NSEMS_MAX and _SC_SEM_VALUE_MAX. Based on a diff
 from Jean-Gérard Pailloncy.
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---
 lib/libc/gen/sysconf.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'lib/libc/gen/sysconf.c')

diff --git a/lib/libc/gen/sysconf.c b/lib/libc/gen/sysconf.c
index b19485e1911..399690c2b54 100644
--- a/lib/libc/gen/sysconf.c
+++ b/lib/libc/gen/sysconf.c
@@ -31,10 +31,11 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: sysconf.c,v 1.5 2003/06/02 20:18:35 millert Exp $";
+static char rcsid[] = "$OpenBSD: sysconf.c,v 1.6 2004/05/07 18:39:19 millert Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
+#include <sys/sem.h>
 #include <sys/sysctl.h>
 #include <sys/time.h>
 #include <sys/resource.h>
@@ -60,9 +61,10 @@ sysconf(name)
 {
 	struct rlimit rl;
 	size_t len;
-	int mib[2], value;
+	int mib[3], value, namelen;
 
 	len = sizeof(value);
+	namelen = 2;
 
 	switch (name) {
 /* 1003.1 */
@@ -186,15 +188,23 @@ sysconf(name)
 		mib[0] = CTL_KERN;
 		mib[1] = KERN_SYSVSHM;
 
-yesno:		if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
+yesno:		if (sysctl(mib, namelen, &value, &len, NULL, 0) == -1)
 			return (-1);
 		if (value == 0)
 			return (-1);
 		return (value);
 		break;
+	case _SC_SEM_NSEMS_MAX:
+	case _SC_SEM_VALUE_MAX:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_SEMINFO;
+		mib[2] = name = _SC_SEM_NSEMS_MAX ?
+		    KERN_SEMINFO_SEMMNS : KERN_SEMINFO_SEMVMX;
+		namelen = 3;
+		break;
 	default:
 		errno = EINVAL;
 		return (-1);
 	}
-	return (sysctl(mib, 2, &value, &len, NULL, 0) == -1 ? -1 : value); 
+	return (sysctl(mib, namelen, &value, &len, NULL, 0) == -1 ? -1 : value); 
 }
-- 
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