From 3e5e540513665105b963262c2eaf33f197a0a36c Mon Sep 17 00:00:00 2001
From: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
Date: Tue, 1 Mar 2016 02:52:47 +0000
Subject: eudev: Replaces udev with eudev for compatibility when using sysvinit
 on newer kernels

udev has started to fail on new kernels (4.4), due to being deprecated in favor
of systemd's udev implementation. To maintain a sysvinit alternative we also
need to provide an alternative to udev. Eudev is a fork of systemds udev,
this new eudev recipe provides upstream udev 220 funcitonality.

  - Removes patches that dont apply anymore
  - ToDo: eudev-ptest?

[YOCTO #8998]

(From OE-Core rev: a22797f7c37a865420837b5c29b270f73ee4c6ce)

Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/recipes-core/udev/eudev/udev-cache | 75 +++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 meta/recipes-core/udev/eudev/udev-cache

(limited to 'meta/recipes-core/udev/eudev/udev-cache')

diff --git a/meta/recipes-core/udev/eudev/udev-cache b/meta/recipes-core/udev/eudev/udev-cache
new file mode 100644
index 0000000000..dcfff1cb45
--- /dev/null
+++ b/meta/recipes-core/udev/eudev/udev-cache
@@ -0,0 +1,75 @@
+#!/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"
+DEVCACHE_REGEN="/dev/shm/udev-regen" # create to request cache regen
+
+# A list of files which are used as a criteria to judge whether the udev cache could be reused.
+CMP_FILE_LIST="/proc/version /proc/cmdline /proc/devices"
+[ -f /proc/atags ] && CMP_FILE_LIST="$CMP_FILE_LIST /proc/atags"
+
+# List of files whose metadata (size/mtime/name) will be included in cached
+# system state.
+META_FILE_LIST="lib/udev/rules.d/* etc/udev/rules.d/*"
+
+# Command to compute system configuration.
+sysconf_cmd () {
+	cat -- $CMP_FILE_LIST
+	stat -c '%s %Y %n' -- $META_FILE_LIST | awk -F/ '{print $1 " " $NF;}'
+}
+
+[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
+
+if [ "$ROOTFS_READ_ONLY" = "yes" ]; then
+    [ "$VERBOSE" != "no" ] && echo "udev-cache: read-only rootfs, skip generating udev-cache"
+    exit 0
+fi
+
+[ "$DEVCACHE" != "" ] || exit 0
+[ "${VERBOSE}" == "no" ] || echo -n "udev-cache: checking for ${DEVCACHE_REGEN}... "
+if ! [ -e "$DEVCACHE_REGEN" ]; then
+	[ "${VERBOSE}" == "no" ] || echo "not found."
+	exit 0
+fi
+[ "${VERBOSE}" == "no" ] || echo "found."
+echo "Populating dev cache"
+
+err_cleanup () {
+        echo "udev-cache: update failed!"
+        udevadm control --start-exec-queue
+	rm -f -- "$SYSCONF_TMP" "$DEVCACHE_TMP" "$DEVCACHE" "$SYSCONF_CACHED"
+}
+
+(
+	set -e
+	trap 'err_cleanup' EXIT
+	udevadm control --stop-exec-queue
+	sysconf_cmd > "$SYSCONF_TMP"
+	find /dev -xdev \( -type b -o -type c -o -type l \) | cut -c 2- \
+		| xargs tar cf "${DEVCACHE_TMP}"
+	gzip < "${DEVCACHE_TMP}" > "$DEVCACHE"
+	rm -f "${DEVCACHE_TMP}"
+	mv "$SYSCONF_TMP" "$SYSCONF_CACHED"
+	udevadm control --start-exec-queue
+	rm -f "$DEVCACHE_REGEN"
+	trap - EXIT
+) &
+
+exit 0
-- 
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