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Document the ability to override compiled-in env and hints using variables

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in the bootloader-provided env.
This commit is contained in:
Ian Lepore 2016-02-21 18:58:05 +00:00
parent c39f3bac71
commit 8be85b352b
1 changed files with 6 additions and 3 deletions
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9
usr.sbin/config/config.5
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@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd December 3, 2005
.Dd February 21, 2016
.Dt CONFIG 5
.Os
.Sh NAME
@ -118,7 +118,8 @@ The kernel normally uses an environment prepared for it at boot time
by
.Xr loader 8 .
This directive makes the kernel ignore the boot environment and use
the compiled-in environment instead.
the compiled-in environment instead, unless the boot environment contains
.Va static_env.disabled=1 .
.Pp
This directive is useful for setting kernel tunables in
embedded environments that do not start from
@ -141,7 +142,9 @@ time (see
.Xr device.hints 5 ) .
This directive configures the kernel to use the static device configuration
listed in
.Ar filename .
.Ar filename ,
unless the boot environment contains
.Va static_hints.disabled=1 .
The file
.Ar filename
must conform to the syntax specified by