fixing file descriptor errors, and respawn the listener on /dev/console when stdin...

[mkinit] / src / mkinit

diff --git a/src/mkinit b/src/mkinit
index 05424314e5a4a2c57d72ecb95d500ed623addb04..e9948d1228d26c60f5756fdf14504db5f747bb62 100755 (executable)
--- a/src/mkinit
+++ b/src/mkinit
@@ -16,6 +16,7 @@ usage: $0 [options] [command]
 
 Options:
   -h,--help    Print usage information
+  -r,--relaod  Prevent spawning listeners when reloading
   -t,--test    Fake all commands
 
 Command:
@@ -116,16 +117,28 @@ fi
 
 if [ ! "$RELOAD" ]; then
        # Fork /dev/initctl listener
+       ( exec 0<&- 1<&- 2<&-
        initctld $INITCTL |
        while read line; do
                echo $line > $CMD
-       done &
+       done ) &
 
        # Fork console listener
-       while read -e -p "mkinit> " line; do
-               echo $line > $CMD
-               history -s $line
-       done <&0 &
+       # Readline uses stdin,stderr
+       ( exec 1<&-;
+       while true; do
+               while read -e -p "mkinit> " line; do
+                       echo $line > $CMD
+                       history -s $line
+               done
+               [ "$TEST" ] && break
+               exec 0</dev/console 2>/dev/console
+               echo "Respawning on /dev/console.." >&2
+               sleep 1
+       done) <&0 &
+
+       # Close stdin, stderr
+       exec 0<&- 2<&-
 fi
 
 # Kill listeners on exit
@@ -133,7 +146,7 @@ trap "pkill -HUP -P $$ initctld" EXIT
 
 # Main loop
 while true; do
-while line=$(line); do
+while read line; do
        process $line
 done < $CMD
 done