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add hw.alignbytes sysctl mib. this gives you the value of ALIGNBYTES

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at the kernel compilation time (ALIGNBYTES that the kernel uses).
This commit is contained in:
itojun 2000-02-27 06:13:35 +00:00
parent b22af17c02
commit 959ca07b4b
4 changed files with 24 additions and 9 deletions
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18
lib/libc/gen/sysctl.3
View File

@ -1,4 +1,4 @@
.\" $NetBSD: sysctl.3,v 1.51 2000/02/26 08:48:21 itojun Exp $
.\" $NetBSD: sysctl.3,v 1.52 2000/02/27 06:13:35 itojun Exp $
.\"
.\" Copyright (c) 1993
.\" The Regents of the University of California. All rights reserved.
@ -213,9 +213,10 @@ privilege may change the value.
.It HW\_PHYSMEM integer no
.It HW\_USERMEM integer no
.It HW\_PAGESIZE integer no
.\".It HW\_DISKNAMES struct no
.\".It HW\_DISKSTATS struct no
.It HW\_MACHINE\_ARCH string no
.\".It HW\_DISKNAMES integer no
.\".It HW\_DISKSTATS integer no
.It HW\_ALIGNBYTES integer no
.El
.Pp
.Bl -tag -width "123456"
@ -234,10 +235,17 @@ The bytes of physical memory.
The bytes of non-kernel memory.
.It Li HW_PAGESIZE
The software page size.
.It Li HW_MACHINE_ARCH
The machine cpu class.
.\".It Fa HW_DISKNAMES
.\".It Fa HW_DISKSTATS
.It Li HW_MACHINE_ARCH
The machine cpu class.
.It Li HW_ALIGNBYTES
Alignment constraint for all possible data types.
This shows the value
.Dv ALIGNBYTES
in
.Pa /usr/include/machine/param.h ,
at the kernel compilation time.
.El
.Sh CTL_KERN
The string and integer information available for the CTL_KERN level

5
sbin/sysctl/sysctl.8
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@ -1,4 +1,4 @@
.\" $NetBSD: sysctl.8,v 1.43 2000/02/26 08:48:22 itojun Exp $
.\" $NetBSD: sysctl.8,v 1.44 2000/02/27 06:13:37 itojun Exp $
.\"
.\" Copyright (c) 1993
.\" The Regents of the University of California. All rights reserved.
@ -116,7 +116,10 @@ privilege can change the value.
.It ddb.onpanic integer yes
.It ddb.radix integer yes
.It ddb.tabstops integer yes
.It hw.alignbytes integer no
.It hw.byteorder integer no
.\".It hw.disknames struct no
.\".It hw.diskstats struct no
.It hw.machine string no
.It hw.machine_arch string no
.It hw.model string no

4
sys/kern/kern_sysctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sysctl.c,v 1.57 2000/02/06 07:29:58 fair Exp $ */
/* $NetBSD: kern_sysctl.c,v 1.58 2000/02/27 06:13:40 itojun Exp $ */
/*-
* Copyright (c) 1982, 1986, 1989, 1993
@ -468,6 +468,8 @@ hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
ctob(physmem - uvmexp.wired)));
case HW_PAGESIZE:
return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE));
case HW_ALIGNBYTES:
return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES));
default:
return (EOPNOTSUPP);
}

6
sys/sys/sysctl.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: sysctl.h,v 1.40 2000/02/06 07:29:59 fair Exp $ */
/* $NetBSD: sysctl.h,v 1.41 2000/02/27 06:13:40 itojun Exp $ */
/*
* Copyright (c) 1989, 1993
@ -266,7 +266,8 @@ struct kinfo_proc {
#define HW_DISKNAMES 8 /* strings: disk drive names */
#define HW_DISKSTATS 9 /* struct: diskstats[] */
#define HW_MACHINE_ARCH 10 /* string: machine architecture */
#define HW_MAXID 11 /* number of valid hw ids */
#define HW_ALIGNBYTES 11 /* int: ALIGNBYTES for the kernel */
#define HW_MAXID 12 /* number of valid hw ids */
#define CTL_HW_NAMES { \
{ 0, 0 }, \
@ -280,6 +281,7 @@ struct kinfo_proc {
{ "disknames", CTLTYPE_STRUCT }, \
{ "diskstats", CTLTYPE_STRUCT }, \
{ "machine_arch", CTLTYPE_STRING }, \
{ "alignbytes", CTLTYPE_INT }, \
}
/*