rc: exit with error count, not error sum

cc199761f assumes that /etc/rc.d scripts will exit with a value of 0 or
1. Since this can't be guaranteed, clamp the return value to 0 or 1
before adding it to the exit value.

Note that a lot of /etc/rc.d scripts don't properly exit with 0 or 1, so
this is more of a forward looking change in the hope that these scripts
are cleaned up.

Signed-off-by: Tom Gundersen <teg@jklm.no>

1 files changed, 1 insertions, 1 deletions

diff --git a/rc b/rc
index 1e64119..54dc11c 100755
--- a/rc
+++ b/rc
@@ -45,7 +45,7 @@ case $1 in
 		shift
 		for i; do
 			[[ -x "/etc/rc.d/$i" ]] && "/etc/rc.d/$i" $action
-			(( ret += $? ))
+			(( ret += !! $? ))  # clamp exit value to 0/1
 		done
 esac