From dd47c5d857f749662d9c025244d4df72aba0c67b Mon Sep 17 00:00:00 2001
From: Hasso Tepper <hasso@dragonflybsd.org>
Date: Thu, 21 Feb 2008 12:47:54 +0000
Subject: [PATCH] Add _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN variables
 to the sysconf(3). These are nonstandard, but implemented in many systems.

---
 lib/libc/gen/sysconf.3 | 11 +++++++++--
 lib/libc/gen/sysconf.c |  7 ++++++-
 sys/sys/unistd.h       |  5 ++++-
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/lib/libc/gen/sysconf.3 b/lib/libc/gen/sysconf.3
index f3268155af..7838f7cd2c 100644
--- a/lib/libc/gen/sysconf.3
+++ b/lib/libc/gen/sysconf.3
@@ -31,9 +31,9 @@
 .\"
 .\"	@(#)sysconf.3	8.3 (Berkeley) 4/19/94
 .\" $FreeBSD: src/lib/libc/gen/sysconf.3,v 1.8.2.6 2001/12/14 18:33:51 ru Exp $
-.\" $DragonFly: src/lib/libc/gen/sysconf.3,v 1.5 2006/05/26 19:39:36 swildner Exp $
+.\" $DragonFly: src/lib/libc/gen/sysconf.3,v 1.6 2008/02/21 12:47:54 hasso Exp $
 .\"
-.Dd April 19, 1994
+.Dd February 21, 2008
 .Dt SYSCONF 3
 .Os
 .Sh NAME
@@ -158,6 +158,10 @@ otherwise \-1.
 .It Li _SC_2_UPE
 Return 1 if the system supports the User Portability Utilities Option,
 otherwise \-1.
+.It Li _SC_NPROCESSORS_CONF
+The number of processors configured.
+.It Li _SC_NPROCESSORS_ONLN
+The number of processors online.
 .El
 .Sh RETURN VALUES
 If the call to
@@ -192,6 +196,9 @@ Except for the fact that values returned by
 may change over the lifetime of the calling process,
 this function conforms to
 .St -p1003.1-88 .
+.Pp
+_SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN are nonstandard, but implemented
+in many systems.
 .Sh HISTORY
 The
 .Fn sysconf
diff --git a/lib/libc/gen/sysconf.c b/lib/libc/gen/sysconf.c
index 876be4adb8..9c35c676d4 100644
--- a/lib/libc/gen/sysconf.c
+++ b/lib/libc/gen/sysconf.c
@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  * @(#)sysconf.c	8.2 (Berkeley) 3/20/94
- * $DragonFly: src/lib/libc/gen/sysconf.c,v 1.4 2005/11/13 00:07:42 swildner Exp $
+ * $DragonFly: src/lib/libc/gen/sysconf.c,v 1.5 2008/02/21 12:47:54 hasso Exp $
  */
 
 #include <sys/_posix.h>
@@ -286,6 +286,11 @@ sysconf(int name)
 		mib[1] = CTL_P1003_1B_TIMER_MAX;
 		goto yesno;
 #endif /* _P1003_1B_VISIBLE */
+	case _SC_NPROCESSORS_CONF:
+	case _SC_NPROCESSORS_ONLN:
+		mib[0] = CTL_HW;
+		mib[1] = HW_NCPU;
+		goto yesno;
 
 yesno:		if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
 			return (-1);
diff --git a/sys/sys/unistd.h b/sys/sys/unistd.h
index e41779e2df..1646fd259e 100644
--- a/sys/sys/unistd.h
+++ b/sys/sys/unistd.h
@@ -32,7 +32,7 @@
  *
  *	@(#)unistd.h	8.2 (Berkeley) 1/7/94
  * $FreeBSD: src/sys/sys/unistd.h,v 1.22.2.2 2000/08/22 01:46:30 jhb Exp $
- * $DragonFly: src/sys/sys/unistd.h,v 1.8 2007/03/01 01:46:53 corecode Exp $
+ * $DragonFly: src/sys/sys/unistd.h,v 1.9 2008/02/21 12:47:54 hasso Exp $
  */
 
 #ifndef _SYS_UNISTD_H_
@@ -201,6 +201,9 @@
 
 #endif /* _P1003_1B_VISIBLE */
 
+#define _SC_NPROCESSORS_CONF	57
+#define _SC_NPROCESSORS_ONLN	58
+
 #ifndef _POSIX_SOURCE
 /*
  * rfork() options.
-- 
2.11.4.GIT