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Expose the kernel's boothowto(9) variable through the sysctl

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kern.boothowto variable.

Part of the /etc/rc silent changes requested in PR 41946
and proposed in tech-userlevel.
This commit is contained in:
apb 2009-09-11 18:14:58 +00:00
parent e553df3559
commit 7ab65de0a9
4 changed files with 22 additions and 5 deletions
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3
doc/CHANGES
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@ -1,4 +1,4 @@
# LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.1286 $>
# LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.1287 $>
#
#
# [Note: This file does not mention every change made to the NetBSD source tree.
@ -388,3 +388,4 @@ Changes from NetBSD 5.0 to NetBSD 6.0:
sysinst(8): Install the new modules.tgz set. [jnemeth 20090907]
build.sh: Add a modules operation which builds kernel modules and
installs them into DESTDIR. [jnemeth 20090907]
sysctl(7): Add kern.boothowto variable. [apb 20090911]

6
share/man/man7/sysctl.7
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@ -1,4 +1,4 @@
.\" $NetBSD: sysctl.7,v 1.22 2009/05/18 00:41:53 snj Exp $
.\" $NetBSD: sysctl.7,v 1.23 2009/09/11 18:14:58 apb Exp $
.\"
.\" Copyright (c) 1993
.\" The Regents of the University of California. All rights reserved.
@ -341,6 +341,10 @@ If set to 0, automatic lowering of priority is not performed, and if set to \-1
all non-root processes are immediately lowered.
.It Li kern.autoniceval ( KERN_AUTONICEVAL )
The priority assigned for automatically niced processes.
.It Li kern.boothowto
Flags passed from the boot loader; see
.Xr reboot 2
for the meanings of the flags.
.It Li kern.boottime ( KERN_BOOTTIME )
A
.Va struct timeval

8
share/man/man9/boothowto.9
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@ -1,4 +1,4 @@
.\" $NetBSD: boothowto.9,v 1.2 2009/09/05 11:32:36 wiz Exp $
.\" $NetBSD: boothowto.9,v 1.3 2009/09/11 18:14:58 apb Exp $
.\"
.\" Copyright (c) 2009 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -51,6 +51,10 @@ and
.Dq Sy AB_ Ns No *
symbols in
.In sys/reboot.h .
The value is made available via the
.Xr sysctl 7
variable
.Va kern.boothowto .
.Pp
The
.Dv BOOT_FLAG
@ -254,6 +258,8 @@ This flag is currently not used by any ports.
.Xr ddb 4 ,
.\" RB_USERCONF
.Xr userconf 4 ,
.\" sysctl kern.boothowto
.Xr sysctl 7
.\" sets boothowto
.Xr boot 8 ,
.\" .Xr crash 8 ,

10
sys/kern/init_sysctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: init_sysctl.c,v 1.165 2009/08/16 20:28:19 christos Exp $ */
/* $NetBSD: init_sysctl.c,v 1.166 2009/09/11 18:14:58 apb Exp $ */
/*-
* Copyright (c) 2003, 2007, 2008, 2009 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.165 2009/08/16 20:28:19 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.166 2009/09/11 18:14:58 apb Exp $");
#include "opt_sysv.h"
#include "opt_compat_netbsd32.h"
@ -445,6 +445,12 @@ SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup")
0,
#endif /* _POSIX_SAVED_IDS */
NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_HEX,
CTLTYPE_INT, "boothowto",
SYSCTL_DESCR("Flags from boot loader"),
NULL, 0, &boothowto, sizeof(boothowto),
CTL_KERN, CTL_CREATE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "boottime",