add sysupgrade script for config preserving system upgrades. only implemented for...

[openwrt.git] / package / base-files / files / etc / preinit

diff --git a/package/base-files/files/etc/preinit b/package/base-files/files/etc/preinit
index 85dbf31..452209f 100755 (executable)
--- a/package/base-files/files/etc/preinit
+++ b/package/base-files/files/etc/preinit
@@ -3,7 +3,16 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 . /etc/diag.sh
 
+failsafe_ip() {
+       ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
+}
+
 failsafe() {
+       [ -n "$ifname" ] && grep "$ifname" /proc/net/dev >/dev/null && {
+               failsafe_ip
+               netmsg 192.168.1.255 "Entering Failsafe!"
+               telnetd -l /bin/login <> /dev/null 2>&1
+       }
        lock /tmp/.failsafe
        ash --login
 }
@@ -23,7 +32,8 @@ else
        mount -t tmpfs tmpfs /dev -o size=512K
        mknod /dev/console c 5 1
        mkdir /dev/shm
-       /sbin/hotplug2 --no-persistent --coldplug --set-rules-file /etc/hotplug2-init.rules
+       /sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules
+       /sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules &
        M0=/dev/ptmx
        M1=/dev/ptmx
        HOTPLUG=
@@ -42,19 +52,24 @@ dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
 
 exec <$M0 >$M1 2>&0
 
-{
-       echo "- preinit -"
-       [ -e /etc/preinit.arch ] && . /etc/preinit.arch
-       set_state preinit
-
-       echo "$HOTPLUG" > /proc/sys/kernel/hotplug
-
-       eval ${FAILSAFE:+failsafe}
-       lock -w /tmp/.failsafe
-
-       mount_root
-
-       echo "- init -"
-} | tee /tmp/preinit.log
+echo "- preinit -"
+trap 'FAILSAFE=true' USR1
+[ -e /etc/preinit.arch ] && . /etc/preinit.arch
+set_state preinit
+echo "$HOTPLUG" > /proc/sys/kernel/hotplug
+eval ${FAILSAFE:+failsafe}
+lock -w /tmp/.failsafe
+mount_root
+[ -f /sysupgrade.tgz ] && {
+       echo "- config restore -"
+       cd /
+       mv sysupgrade.tgz /tmp
+       tar xzf /tmp/sysupgrade.tgz
+       rm -f /tmp/sysupgrade.tgz
+       sync
+}
 
+echo "- init -"
+       
+killall hotplug2
 exec /sbin/init