e4fb2bb0c5
This reverts commit 712e62c260.
This commit broke NixOS containers. Systemd wouldn't detect if a container
started successfully and would kill it again after a grace period.
Additionally this prints mount errors due to already mounted filesystems
at boot.
186 lines
4.6 KiB
Bash
186 lines
4.6 KiB
Bash
#! @shell@
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systemConfig=@systemConfig@
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export HOME=/root
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# Print a greeting.
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echo
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echo -e "\e[1;32m<<< NixOS Stage 2 >>>\e[0m"
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echo
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# Set the PATH.
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setPath() {
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local dirs="$1"
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export PATH=/empty
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for i in $dirs; do
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PATH=$PATH:$i/bin
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if test -e $i/sbin; then
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PATH=$PATH:$i/sbin
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fi
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done
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}
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setPath "@path@"
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# Normally, stage 1 mounts the root filesystem read/writable.
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# However, in some environments, stage 2 is executed directly, and the
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# root is read-only. So make it writable here.
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if [ -z "$container" ]; then
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mount -n -o remount,rw none /
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fi
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# Likewise, stage 1 mounts /proc, /dev and /sys, so if we don't have a
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# stage 1, we need to do that here.
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if [ ! -e /proc/1 ]; then
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specialMount() {
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local device="$1"
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local mountPoint="$2"
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local options="$3"
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local fsType="$4"
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mkdir -m 0755 -p "$mountPoint"
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mount -n -t "$fsType" -o "$options" "$device" "$mountPoint"
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}
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source @earlyMountScript@
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fi
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echo "booting system configuration $systemConfig" > /dev/kmsg
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# Make /nix/store a read-only bind mount to enforce immutability of
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# the Nix store. Note that we can't use "chown root:nixbld" here
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# because users/groups might not exist yet.
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# Silence chown/chmod to fail gracefully on a readonly filesystem
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# like squashfs.
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chown -f 0:30000 /nix/store
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chmod -f 1775 /nix/store
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if [ -n "@readOnlyStore@" ]; then
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if ! readonly-mountpoint /nix/store; then
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mount --bind /nix/store /nix/store
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mount -o remount,ro,bind /nix/store
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fi
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fi
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# Provide a /etc/mtab.
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mkdir -m 0755 -p /etc
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test -e /etc/fstab || touch /etc/fstab # to shut up mount
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rm -f /etc/mtab* # not that we care about stale locks
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ln -s /proc/mounts /etc/mtab
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# Process the kernel command line.
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for o in $(cat /proc/cmdline); do
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case $o in
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boot.debugtrace)
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# Show each command.
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set -x
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;;
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resume=*)
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set -- $(IFS==; echo $o)
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resumeDevice=$2
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;;
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esac
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done
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# More special file systems, initialise required directories.
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[ -e /proc/bus/usb ] && mount -t usbfs usbfs /proc/bus/usb # UML doesn't have USB by default
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mkdir -m 01777 -p /tmp
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mkdir -m 0755 -p /var /var/log /var/lib /var/db
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mkdir -m 0755 -p /nix/var
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mkdir -m 0700 -p /root
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chmod 0700 /root
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mkdir -m 0755 -p /bin # for the /bin/sh symlink
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mkdir -m 0755 -p /home
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mkdir -m 0755 -p /etc/nixos
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# Miscellaneous boot time cleanup.
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rm -rf /var/run /var/lock
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rm -f /etc/{group,passwd,shadow}.lock
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# Also get rid of temporary GC roots.
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rm -rf /nix/var/nix/gcroots/tmp /nix/var/nix/temproots
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mkdir -m 0755 -p /run/lock
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# For backwards compatibility, symlink /var/run to /run, and /var/lock
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# to /run/lock.
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ln -s /run /var/run
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ln -s /run/lock /var/lock
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# Clear the resume device.
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if test -n "$resumeDevice"; then
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mkswap "$resumeDevice" || echo 'Failed to clear saved image.'
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fi
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# Use /etc/resolv.conf supplied by systemd-nspawn, if applicable.
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if [ -n "@useHostResolvConf@" -a -e /etc/resolv.conf ]; then
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cat /etc/resolv.conf | resolvconf -m 1000 -a host
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fi
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# Log the script output to /dev/kmsg or /run/log/stage-2-init.log.
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# Only at this point are all the necessary prerequisites ready for these commands.
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exec {logOutFd}>&1 {logErrFd}>&2
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if test -w /dev/kmsg; then
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exec > >(tee -i /proc/self/fd/"$logOutFd" | while read -r line; do
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if test -n "$line"; then
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echo "<7>stage-2-init: $line" > /dev/kmsg
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fi
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done) 2>&1
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else
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mkdir -p /run/log
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exec > >(tee -i /run/log/stage-2-init.log) 2>&1
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fi
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# Run the script that performs all configuration activation that does
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# not have to be done at boot time.
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echo "running activation script..."
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$systemConfig/activate
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# Restore the system time from the hardware clock. We do this after
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# running the activation script to be sure that /etc/localtime points
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# at the current time zone.
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if [ -e /dev/rtc ]; then
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hwclock --hctosys
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fi
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# Record the boot configuration.
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ln -sfn "$systemConfig" /run/booted-system
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# Prevent the booted system form being garbage-collected If it weren't
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# a gcroot, if we were running a different kernel, switched system,
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# and garbage collected all, we could not load kernel modules anymore.
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ln -sfn /run/booted-system /nix/var/nix/gcroots/booted-system
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# Run any user-specified commands.
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@shell@ @postBootCommands@
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# Reset the logging file descriptors.
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exec 1>&$logOutFd 2>&$logErrFd
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exec {logOutFd}>&- {logErrFd}>&-
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# Start systemd.
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echo "starting systemd..."
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PATH=/run/current-system/systemd/lib/systemd \
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LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive \
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exec systemd
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