nixpkgs/boot/boot-stage-2-init.sh
Eelco Dolstra b25ee09ceb * Remove /var/lock on startup.
* Remove /etc/mtab on startup.  This fixes the warning on
  startup when catting /proc/mount to /etc/mtab.

svn path=/nixos/trunk/; revision=13986
2009-02-05 16:19:59 +00:00

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#! @shell@
# !!! copied from stage 1; remove duplication
# Print a greeting.
echo
echo "<<< NixOS Stage 2 >>>"
echo
# Set the PATH.
setPath() {
local dirs="$1"
export PATH=/empty
for i in $dirs; do
PATH=$PATH:$i/bin
if test -e $i/sbin; then
PATH=$PATH:$i/sbin
fi
done
}
setPath "@path@"
# Mount special file systems.
mkdir -m 0755 -p /etc
test -e /etc/fstab || touch /etc/fstab # to shut up mount
mkdir -m 0755 -p /proc
mount -n -t proc none /proc
[ -s /etc/mtab ] && rm /etc/mtab # while installing a symlink is created (see man mount), if it's still there for whateever reason remove it
rm -f /etc/mtab
cat /proc/mounts > /etc/mtab
# Process the kernel command line.
for o in $(cat /proc/cmdline); do
case $o in
debugtrace)
# Show each command.
set -x
;;
debug2)
echo "Debug shell called from @out@"
exec @shell@
;;
S|s|single)
# !!! argh, can't pass a startup event to Upstart yet.
exec @shell@
;;
safemode)
safeMode=1
;;
systemConfig=*)
set -- $(IFS==; echo $o)
systemConfig=$2
;;
resume=*)
set -- $(IFS==; echo $o)
resumeDevice=$2
;;
esac
done
# More special file systems, initialise required directories.
mkdir -m 0755 -p /sys
mount -t sysfs none /sys
mkdir -m 0755 -p /dev
mount -t tmpfs -o "mode=0755" none /dev
mkdir -m 0777 /dev/shm
mount -t tmpfs -o "rw,nosuid,nodev" tmpfs /dev/shm
mkdir -m 0755 -p /dev/pts
mount -t devpts none /dev/pts
[ -e /proc/bus/usb ] && mount -t usbfs none /proc/bus/usb # uml doesn't have usb by default
mkdir -m 01777 -p /tmp
mkdir -m 0755 -p /var
mkdir -m 0755 -p /nix/var
mkdir -m 0700 -p /root
mkdir -m 0755 -p /bin # for the /bin/sh symlink
mkdir -m 0755 -p /home
mkdir -m 0755 -p /etc/nixos
# Miscellaneous boot time cleanup.
rm -rf /var/run
rm -rf /var/lock
#echo -n "cleaning \`/tmp'..."
#rm -rf --one-file-system /tmp/*
#echo " done"
# This is a good time to clean up /nix/var/nix/chroots. Doing an `rm
# -rf' on it isn't safe in general because it can contain bind mounts
# to /nix/store and other places. But after rebooting these are all
# gone, of course.
rm -rf /nix/var/nix/chroots # recreated in activate-configuration.sh
if test -n "$safeMode"; then
mkdir -m 0755 -p /var/run
touch /var/run/safemode
fi
# Create the minimal device nodes needed before we run udev.
mknod -m 0666 /dev/null c 1 3
mknod -m 0644 /dev/urandom c 1 9 # needed for passwd
# Clear the resume device.
if test -n "$resumeDevice"; then
mkswap "$resumeDevice" || echo 'Failed to clear saved image.'
fi
# Run the script that performs all configuration activation that does
# not have to be done at boot time.
@activateConfiguration@ "$systemConfig"
# Record the boot configuration. !!! Should this be a GC root?
if test -n "$systemConfig"; then
ln -sfn "$systemConfig" /var/run/booted-system
fi
# Ensure that the module tools can find the kernel modules.
export MODULE_DIR=@kernel@/lib/modules/
# Run any user-specified commands.
@shell@ @bootLocal@
# Start Upstart's init. We start it through the
# /var/run/current-system symlink indirection so that we can upgrade
# init in a running system by changing the symlink and sending init a
# HUP signal.
export UPSTART_CFG_DIR=/etc/event.d
setPath "@upstartPath@"
exec /var/run/current-system/upstart/sbin/init