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|
#! @shell@
systemConfig=@systemConfig@
# Print a greeting.
echo
echo -e "\e[1;32m<<< NixOS Stage 2 >>>\e[0m"
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@"
# Normally, stage 1 mounts the root filesystem read/writable.
# However, in some environments (such as Amazon EC2), stage 2 is
# executed directly, and the root is read-only. So make it writable
# here.
mount -n -o remount,rw none /
# Likewise, stage 1 mounts /proc, /dev and /sys, so if we don't have a
# stage 1, we need to do that here.
if [ ! -e /proc/1 ]; then
mkdir -m 0755 -p /proc
mount -n -t proc none /proc
mkdir -m 0755 -p /dev
mount -t devtmpfs none /dev
fi
# Provide a /etc/mtab.
mkdir -m 0755 -p /etc
test -e /etc/fstab || touch /etc/fstab # to shut up mount
rm -f /etc/mtab* # not that we care about stale locks
ln -s /proc/mounts /etc/mtab
# Process the kernel command line.
debug2=
for o in $(cat /proc/cmdline); do
case $o in
debugtrace)
# Show each command.
set -x
;;
debug2)
debug2=1
;;
S|s|single)
# !!! argh, can't pass a startup event to Upstart yet.
exec @shell@
;;
resume=*)
set -- $(IFS==; echo $o)
resumeDevice=$2
;;
esac
done
# More special file systems, initialise required directories.
mkdir -m 0755 /dev/shm
mount -t tmpfs -o "rw,nosuid,nodev,size=@devShmSize@" tmpfs /dev/shm
mkdir -m 0755 -p /dev/pts
[ -e /proc/bus/usb ] && mount -t usbfs none /proc/bus/usb # UML doesn't have USB by default
mkdir -m 01777 -p /tmp
mkdir -m 0755 -p /var /var/log
mkdir -m 0755 -p /nix/var
mkdir -m 0700 -p /root
mkdir -m 0755 -p /bin # for the /bin/sh symlink
mkdir -m 0755 -p /home
mkdir -m 0755 -p /etc/nixos
mkdir -m 0700 -p /var/log/journal
# Miscellaneous boot time cleanup.
rm -rf /var/run /var/lock /var/log/upstart
rm -f /etc/resolv.conf
if test -n "@cleanTmpDir@"; then
echo -n "cleaning \`/tmp'..."
find /tmp -maxdepth 1 -mindepth 1 -print0 | xargs -0r rm -rf --one-file-system
echo " done"
else
# Get rid of ICE locks...
rm -rf /tmp/.ICE-unix
fi
# ... and ensure that it's owned by root.
mkdir -m 1777 /tmp/.ICE-unix
# This is a good time to clean up /nix/var/nix/chroots. Doing an `rm
# -rf' on it isn't safe in general because it can contain bind mounts
# to /nix/store and other places. But after rebooting these are all
# gone, of course.
rm -rf /nix/var/nix/chroots # recreated in activate-configuration.sh
# Also get rid of temporary GC roots.
rm -rf /nix/var/nix/gcroots/tmp /nix/var/nix/temproots
# Create a tmpfs on /run to hold runtime state for programs such as
# udev (if stage 1 hasn't already done so).
if ! mountpoint -q /run; then
rm -rf /run
mkdir -m 0755 -p /run
mount -t tmpfs -o "mode=0755,size=@runSize@" none /run
fi
mkdir -m 0700 -p /run/lock
# For backwards compatibility, symlink /var/run to /run, and /var/lock
# to /run/lock.
ln -s /run /var/run
ln -s /run/lock /var/lock
# Clear the resume device.
if test -n "$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.
echo "running activation script..."
$systemConfig/activate
# Record the boot configuration.
ln -sfn "$systemConfig" /var/run/booted-system
# Prevent the booted system form being garbage-collected If it weren't
# a gcroot, if we were running a different kernel, switched system,
# and garbage collected all, we could not load kernel modules anymore.
ln -sfn /var/run/booted-system /nix/var/nix/gcroots/booted-system
# Run any user-specified commands.
@shell@ @postBootCommands@
# For debugging Upstart.
if [ -n "$debug2" ]; then
# Get the console from the kernel cmdline
console=tty1
for o in $(cat /proc/cmdline); do
case $o in
console=*)
set -- $(IFS==; echo $o)
params=$2
set -- $(IFS=,; echo $params)
console=$1
;;
esac
done
echo "Debug shell called from @out@"
setsid @shellDebug@ < /dev/$console >/dev/$console 2>/dev/$console
fi
# Start systemd.
echo "starting systemd..."
PATH=/var/run/current-system/systemd/lib/systemd \
MODULE_DIR=/var/run/current-system/kernel-modules/lib/modules \
exec systemd --log-target journal # --log-level debug --crash-shell
|