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Clarify the behavior of the @machine and @machine_arch magic links 

relative to uname output when running in emulations: the magic links
are *not* affected even though uname output changes.

(This means @machine magic links can be used for e.g. amd64 vs. i386
device nodes. There's also an @emul magic link for emulation.)

Noted by apb.
This commit is contained in:
dholland 2014-01-09 18:55:41 +00:00
parent 9a75aee207
commit b510fd7487
1 changed files with 16 additions and 10 deletions
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26
share/man/man7/symlink.7
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@ -1,4 +1,4 @@
.\" $NetBSD: symlink.7,v 1.21 2011/06/02 09:02:39 jruoho Exp $
.\" $NetBSD: symlink.7,v 1.22 2014/01/09 18:55:41 dholland Exp $
.\"
.\" Copyright (c) 1992, 1993, 1994
.\" The Regents of the University of California. All rights reserved.
@ -29,7 +29,7 @@
.\"
.\" @(#)symlink.7 8.3 (Berkeley) 3/31/94
.\"
.Dd June 2, 2011
.Dd January 9, 2014
.Dt SYMLINK 7
.Os
.Sh NAME
@ -513,25 +513,31 @@ For example
.It @machine
Expands to the value of
.Li MACHINE
for the system
.Po
for the system.
For native binaries, this is
equivalent to the output of
.Dq uname -m
or
.Xr sysctl 3
.Dq hw.machine
.Pc .
.Dq hw.machine .
.Po
For non-native binaries, the values returned by uname and sysctl
typically vary to match the emulation environment.
.Pc
.It @machine_arch
Expands to the value of
.Li MACHINE_ARCH
for the system
.Po
for the system.
For native binaries, this is
equivalent to the output of
.Dq uname -p
or
.Xr sysctl 3
.Dq hw.machine_arch
.Pc .
.Dq hw.machine_arch .
.Po
For non-native binaries, the values returned by uname and sysctl
typically vary to match the emulation environment.
.Pc
.It @osrelease
Expands to the operating system release of the running kernel
.Po