/etc/event.d/rcS does not set RUNLEVEL properly

[Luis Mondesi]

Binary package hint: upstart-compat-sysv

Steps to reproduce:

1. put a script in /etc/init.d/foo and symlink it to /etc/rcS.d/S99foo
2. in said script, execute runlevel > /tmp/foo.log

To fix this bug all you need is:

--- /etc/event.d/rcS 2006-09-13 18:47:27.000000000 -0400
+++ rcS 2006-12-18 13:12:42.000000000 -0500
@@ -14,6 +14,12 @@
 # information (we enter rc1 not rcS for maintenance). Run /etc/init.d/rc
 # without information so that it defaults to previous=N runlevel=S.
 script
- runlevel --set S >/dev/null || true
+ set $(runlevel --set S || true)
+ if [ "$1" != "unknown" ]; then
+ PREVLEVEL=$1
+ RUNLEVEL=$2
+ export PREVLEVEL RUNLEVEL
+ fi
+
        exec /etc/init.d/rcS
 end script

[Scott James Remnant (Canonical) (canonical-scott)]

It can't set it this way since /var/run isn't mounted at this point, so we're pretty likely to have a bogus "previous" runlevel in there.

[Scott James Remnant (Canonical) (canonical-scott)]

This was fixed by force-setting RUNLEVEL=S and PREVLEVEL=N in rcS

[islet8 (islet8)]

I've done the modification, but it still does not work on my ubuntu.
my /etc/event.d/rcS is as follows:

# rcS - runlevel compatibility
#
# This task runs the old sysv-rc startup scripts.

start on startup

stop on runlevel

# Note: there can be no previous runlevel here, if we have one it's bad
# information (we enter rc1 not rcS for maintenance).
console output
script
#runlevel --set S >/dev/null || true
#PREVLEVEL=N
#RUNLEVEL=S
#export PREVLEVEL RUNLEVEL

set $(runlevel --set S || true)
if [ "$1" != "unknown" ]; then
PREVLEVEL=$1
RUNLEVEL=$2
export PREVLEVEL RUNLEVEL
fi

exec /etc/init.d/rcS
end script

what's wrong?

[ingo (rum-topf)]

Yes, I was not able to make any sense out of that patch either.

A more noob-friendly entry such as a proper working rcS file would help us all :)

Thanks in advance!

[ingo (rum-topf)]

OK, I've finally managed to work out that a "-" before the line means "delete" and a "+" insert. So now my rcS looks as follows:

# This task runs the old sysv-rc startup scripts.

start on startup

stop on runlevel

# Note: there can be no previous runlevel here, if we have one it's bad
# information (we enter rc1 not rcS for maintenance).
console output
script
        set $(runlevel --set S || true)
        if [ "$1" != "unknown" ]; then
        PREVLEVEL=$1
        RUNLEVEL=$2
        export PREVLEVEL RUNLEVEL
        fi

        PREVLEVEL=N
        RUNLEVEL=S
        export PREVLEVEL RUNLEVEL

        exec /etc/init.d/rcS
end script

[Luis Mondesi (lemsx1)]

Ingo,

why don't you just get the upstart-compat-sysv (upstart-* suite) package from Gutsy and do this (from a Terminal):

#!/bin/sh
# this is a script or you can do one command at a time:

  cd /tmp
  mkdir upstart

# now get (all) packages from the Gutsy archive:
  wget http://archive.ubuntu.com/ubuntu/pool/main/u/upstart/upstart-compat-sysv_0.3.8-2_i386.deb

# you need these for sanity
  wget http://archive.ubuntu.com/ubuntu/pool/main/u/upstart/system-services_0.3.8-2_i386.deb
  wget http://archive.ubuntu.com/ubuntu/pool/main/u/upstart/upstart_0.3.8-2_i386.deb
  wget http://archive.ubuntu.com/ubuntu/pool/main/u/upstart/upstart-logd_0.3.8-2_i386.deb

# extract to /tmp/upstart
  dpkg -x upstart-compat-sysv_0.3.8-2_i386.deb upstart

# again, this is just for sanity
  dpkg -x system-services_0.3.8-2_i386.deb upstart
  dpkg -x upstart_0.3.8-2_i386.deb upstart
  dpkg -x upstart-logd_0.3.8-2_i386.deb upstart

# override the files in /etc/event.d with the new ones:
  sudo cp upstart/etc/event.d/* /etc/event.d/

That will give you a working system again.
When prompted for a password, use your own password.

[ingo (rum-topf)]

Thank you very much Luis!