sysvinit-inittab: use ttyrun to run getty only if the terminal exists

Wrap calls to start_getty with ttyrun, so that getty isn't started if
the device doesn't exist.  As we know start_getty is only called when
the device exists we can remove the partial workaround for this problem
in that scripts too.

This neatly obsoletes SERIAL_CONSOLES_CHECK, whose sole purpose was to
check what terminals are present at boot and rewrite inittab.  Notably,
this meant that SERIAL_CONSOLES_CHECK made using a read-only rootfs
impossible.

(From OE-Core rev: f4fd17d5a5e4eaa31995d3ca52c871cfbdc0df68)

(From OE-Core rev: 8e48297621311116d3edd7e3aa0de1b8ef2431b1)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
index f60409eae3..f5671ee53d 100644
--- a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
+++ b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty
@@ -1,5 +1,9 @@
 #!/bin/sh
 
+SPEED=$1
+DEVICE=$2
+TERM=$3
+
 # busybox' getty does this itself, util-linux' agetty needs extra help
 getty="/sbin/getty"
 case $(readlink -f "${getty}") in
@@ -13,9 +17,4 @@ case $(readlink -f "${getty}") in
         ;;
 esac
 
-if [ -e /sys/class/tty/$2 -a -c /dev/$2 ]; then
-        ${setsid:-} ${getty} ${options:-} -L $1 $2 $3
-else
-    # Prevent respawning to fast error if /dev entry does not exist
-    sleep 1000
-fi
+${setsid:-} ${getty} ${options:-} -L $SPEED $DEVICE $TERM