Clear up problems with /etc/rc.d/{abi|cleanvar|cleartmp} brought

to light by the PR.  Specifically, convert these three scripts
into good rc.d citizens, making sure that their functionality
is preserved, but the rc.d framework rules are not broken.

Add support for cleanvar as a regular rc.d script in the
default rc.conf, and document this in the man page.

Add a descriptive comment to rc.conf that regarding the
three emulation/compatibility services provided by abi
so users will not be confused by these services not having
their own startup scripts.

PR:		conf/84574
Submitted by:	Alexander Botero-Lowry

1 files changed, 19 insertions, 20 deletions

diff --git a/etc/rc.d/abi b/etc/rc.d/abi
index 53c5447..a60fd68 100644
--- a/etc/rc.d/abi
+++ b/etc/rc.d/abi
@@ -10,12 +10,9 @@
 
 . /etc/rc.subr
 
-echo -n 'Additional ABI support:'
-
-name="sysvipc"
-rcvar=`set_rcvar`
-start_cmd="sysv_start"
-stop_cmd=":"
+name="abi"
+start_precmd="${name}_prestart"
+start_cmd=":"
 
 sysv_start()
 {
@@ -24,12 +21,6 @@ sysv_start()
 	kldload sysvsem >/dev/null 2>&1
 	kldload sysvshm >/dev/null 2>&1
 }
-load_rc_config $name
-run_rc_command "$1"
-
-name="linux"
-rcvar=`set_rcvar`
-start_cmd="linux_start"
 
 linux_start()
 {
@@ -41,15 +32,23 @@ linux_start()
 		/compat/linux/sbin/ldconfig
 	fi
 }
-load_rc_config $name
-run_rc_command "$1"
 
-name="svr4"
-rcvar=`set_rcvar`
-start_precmd="echo -n ' svr4'"
-start_cmd="kldload svr4 > /dev/null 2>&1"
+svr4_start()
+{
+	echo -n ' svr4'
+	kldload svr4 > /dev/null 2>&1
+}
+
+abi_prestart()
+{
+	echo -n 'Additional ABI support:'
+
+	checkyesno sysvipc_enable && sysv_start
+	checkyesno linux_enable && linux_start
+	checkyesno svr4_enable && svr4_start
+
+	echo '.'
+}
 
 load_rc_config $name
 run_rc_command "$1"
-
-echo '.'