rcorder(8): add support for /etc/rc.resume, so it calls "rcorder -k resume"

and runs scripts containing "KEYWORD: resume" with single "resume" argument.

Working example is the port sysutils/cpupdate that defines
extra_commands="resume" to reload CPU microcode cleared
by suspend/resume sequence.

This change does nothing for a system having no scripts with KEYWORD: resume.

MFC after:		1 month
Differential Revision:	https://reviews.freebsd.org/D15247

1 files changed, 26 insertions, 4 deletions

diff --git a/usr.sbin/acpi/acpiconf/acpiconf.8 b/usr.sbin/acpi/acpiconf/acpiconf.8
index 07862d7efa2a..2116dd19a943 100644
--- a/usr.sbin/acpi/acpiconf/acpiconf.8
+++ b/usr.sbin/acpi/acpiconf/acpiconf.8
@@ -27,7 +27,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 22, 2015
+.Dd October 27, 2018
 .Dt ACPICONF 8
 .Os
 .Sh NAME
@@ -72,13 +72,35 @@ If the
 .Pa /etc/rc.suspend
 and
 .Pa /etc/rc.resume
-scripts are executable, they will be run before and after entering
-the given sleep state.
+scripts are executable, they will be run by
+.Xr devd 8
+or
+.Xr apmd 8
+before and after entering the given sleep state.
+.Pp
+The
+.Pa /etc/rc.resume
+script uses the
+.Xr rcorder 8
+utility to call scripts in
+.Pa /etc/rc.d/
+and the
+.Va $local_startup
+directories that have a "resume" KEYWORD.
+Called scripts are supplied with single "resume"
+command line argument. See
+.Xr rc.conf 5
+for more information about
+.Va $local_startup .
 .El
 .Sh SEE ALSO
 .Xr acpi 4 ,
 .Xr acpidump 8 ,
-.Xr apm 8
+.Xr apm 8 ,
+.Xr apmd 8 ,
+.Xr devd 8 ,
+.Xr rc.conf 5 ,
+.Xr rcorder 8
 .Sh HISTORY
 The
 .Nm