From d86c11330da98ee0d6b061b338e165200d610381 Mon Sep 17 00:00:00 2001 From: dd Date: Sun, 10 Mar 2002 09:53:39 +0000 Subject: Document `sysctl variable=/dev/foo' syntax. PR: 34184 Submitted by: Thomas Quinot --- sbin/sysctl/sysctl.8 | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) (limited to 'sbin/sysctl/sysctl.8') diff --git a/sbin/sysctl/sysctl.8 b/sbin/sysctl/sysctl.8 index 3790c6d..538a74e 100644 --- a/sbin/sysctl/sysctl.8 +++ b/sbin/sysctl/sysctl.8 @@ -32,7 +32,7 @@ .\" From: @(#)sysctl.8 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd May 28, 2001 +.Dd March 10, 2002 .Dt SYSCTL 8 .Os .Sh NAME @@ -120,7 +120,9 @@ few bytes. .Pp The information available from .Nm -consists of integers, strings, and opaques. +consists of integers, strings, devices +.Pq Vt dev_t , +and opaque types. .Nm Sysctl only knows about a couple of opaque types, and will resort to hexdumps for the rest. @@ -136,6 +138,17 @@ For a detailed description of these variable see .Pp The changeable column indicates whether a process with appropriate privilege can change the value. +String, integer, and devices values can be set using +.Nm . +For device values, +.Ar value +can be specified as a character device special file name. +Special values +.Ar off +and +.Ar none +denote +.Dq no device . .Bl -column security.bsd.unprivileged_read_msgbuf integerxxx .It Sy "Name Type Changeable .It "kern.ostype string no @@ -164,6 +177,7 @@ privilege can change the value. .It "kern.osreldate string no .It "kern.bootfile string yes .It "kern.corefile string yes +.It "kern.dumpdev dev_t yes .It "kern.logsigexit integer yes .It "security.bsd.suser_enabled integer yes .It "security.bsd.see_other_uids integer yes @@ -214,6 +228,14 @@ per uid to 1000, one would use the following request: .Pp .Dl "sysctl kern.maxprocperuid=1000" .Pp +The device used for crash dumps can be specified using: +.Pp +.Dl "sysctl kern.dumpdev=/dev/somedev" +.Pp +which is equivalent to +.Pp +.Dl "dumpon /dev/somedev" +.Pp Information about the system clock rate may be obtained with: .Pp .Dl "sysctl kern.clockrate" -- cgit v1.1