The list of tcp/udp ports not to allocate dynamically is now

a bitmask configurable via sysctl([38]).  The default values
have not changed.  If one wants to change the list it should
be done early on in /etc/rc.

1 files changed, 15 insertions, 3 deletions

diff --git a/lib/libc/gen/sysctl.3 b/lib/libc/gen/sysctl.3
index e16417eef24..b3520d9e92f 100644
--- a/lib/libc/gen/sysctl.3
+++ b/lib/libc/gen/sysctl.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sysctl.3,v 1.6 1997/06/13 13:30:51 deraadt Exp $
+.\"	$OpenBSD: sysctl.3,v 1.7 1997/08/09 23:36:30 millert Exp $
 .\"
 .\" Copyright (c) 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -320,7 +320,7 @@ Return 1 if file names longer than KERN_NAME_MAX are truncated.
 .It Li KERN_OSRELEASE
 The system release string.
 .It Li KERN_OSREV
-The system revision string.
+The system revision number.
 .It Li KERN_OSTYPE
 The system type string.
 .It Li KERN_PATH_MAX
@@ -450,8 +450,10 @@ The currently defined protocols and names are:
 .It ip	redirect	integer	yes
 .It ip	ttl	integer	yes
 .It icmp	maskrepl	integer	yes
-.It tcp rfc1323	integer	yes
+.It tcp	rfc1323	integer	yes
+.It tcp	baddynamic	array	yes
 .It udp	checksum	integer	yes
+.It udp	baddynamic	array	yes
 .El
 .Pp
 The variables are as follows:
@@ -471,9 +473,19 @@ This value applies to normal transport protocols, not to ICMP.
 Returns 1 if ICMP network mask requests are to be answered.
 .It Li tcp.rfc1323
 Returns 1 if RFC1323 extensions to TCP are enabled.
+.It Li tcp.baddynamic
+An array of
+.Va in_port_t
+is returned specifying the bitmask of TCP ports between 512
+and 1023 inclusive that should not be allocated dynamically
+by the kernel (ie: they must be bound specifically by port number).
 .It Li udp.checksum
 Returns 1 when UDP checksums are being computed and checked.
 Disabling UDP checksums is strongly discouraged.
+.It Li udp.baddynamic
+Analogous to
+.Va tcp.baddynamic
+but for UDP sockets.
 .El
 .Sh CTL_USER
 The string and integer information available for the CTL_USER level