3 # Provides: grml-udev-config
4 # Required-Start: mountkernfs
10 # Short-Description: wrapper around udev to support bootoptions noudev and blacklist
13 . /lib/lsb/init-functions
15 # are we running within init (non_interactive) or within shell (interactive)?
16 check_for_non_interactive() {
17 if [ "$RUNLEVEL" = "S" -a "$PREVLEVEL" = "N" ]; then
22 if [ -z "$TTY" -o "$TTY" = "/dev/console" -o "$TTY" = "/dev/null" ]; then
30 if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
38 # test whether udev is enabled in init's configuration
39 # if so do not execute our script but instead use original
40 # udev init script only
41 if update-rc.d -n udev start 3 S >/dev/null ; then
42 log_warning_msg "Original udev init script is configured for startup, ignoring request to start $0"
51 # do not flood console with kernel driver messages
52 # grep -q debug /proc/cmdline || echo 0 > /proc/sys/kernel/printk
54 # do not display anything when bootoption *splash is present:
55 # if grep -qe ' splash' -qe ' tsplash' -qe ' textsplash' /proc/cmdline ; then
56 # exec >/dev/null </dev/null
59 # support bootoption blacklist, must be executed *before* udev is present
60 if [ -r /etc/grml/autoconfig.functions ] ; then
61 ( zsh -c '. /etc/grml/autoconfig.functions && config_blacklist || printf "Error when trying to run config_blacklist.\n">&2' )
63 printf 'Warning: /etc/grml/autoconfig.functions could not be read.\n'>&2
66 # support bootoption noudev and inform user how to skip
67 # execution of udev (being bootoption noudev)
68 if ! grep -q noudev /proc/cmdline ; then
69 check_for_non_interactive && \
70 log_warning_msg "If your system hangs now skip execution of udev via bootoption noudev"
72 # - allow execution of initscript through FORCE=1 when booting with noudev
73 if [ -z "$FORCE" ] ; then
74 log_failure_msg "Bootoption noudev found. Skipping execution of udev init script."
75 if ! check_for_non_interactive ; then
76 printf "\nIt has been detected that the udev init script\n"
77 printf "has been run from an interactive shell.\n"
78 printf "You booted your system using bootoption noudev.\n"
79 printf "To force startup of udev please run:\n\n"
80 printf "\tFORCE=1 Start udev\n\n"
86 udev_init_check && exec_wrapper udev start
90 # in any other situation just directly invoke udev:
92 udev_init_check && exec_wrapper udev $1
98 ##############################################################################