1 files changed, 38 insertions, 0 deletions

diff --git a/meta/recipes-core/udev/udev/udev-cache b/meta/recipes-core/udev/udev/udev-cache
new file mode 100644
index 0000000000..497d257397
--- /dev/null
+++ b/meta/recipes-core/udev/udev/udev-cache
@@ -0,0 +1,38 @@
+#!/bin/sh -e
+
+### BEGIN INIT INFO
+# Provides:          udev-cache
+# Required-Start:    mountall
+# Required-Stop:
+# Default-Start:     S
+# Default-Stop:
+# Short-Description: cache /dev to speedup the udev next boot
+### END INIT INFO
+
+export TZ=/etc/localtime
+
+[ -r /proc/mounts ] || exit 1
+[ -x @UDEVD@ ] || exit 1
+[ -d /sys/class ] || exit 1
+
+[ -f /etc/default/rcS ] && . /etc/default/rcS
+DEVCACHE_TMP="/dev/shm/udev-cache-tmp.tar"
+SYSCONF_CACHED="/etc/udev/cache.data"
+SYSCONF_TMP="/dev/shm/udev.cache"
+[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
+
+if [ "$ROOTFS_READ_ONLY" = "yes" ]; then
+    [ "$VERBOSE" != "no" ] && echo "udev-cache: read-only rootfs, skip generating udev-cache"
+    exit 0
+fi
+
+if [ "$DEVCACHE" != "" -a -e "$SYSCONF_TMP" ]; then
+        echo "Populating dev cache"
+        find /dev -xdev \( -type b -o -type c -o -type l \) | cut -c 2- \
+                | xargs tar cf "${DEVCACHE_TMP}" -T-
+        gzip < "${DEVCACHE_TMP}" > "$DEVCACHE"
+        rm -f "${DEVCACHE_TMP}"
+        mv "$SYSCONF_TMP" "$SYSCONF_CACHED"
+fi
+
+exit 0