38e8cf175f
initrd instead of a mix of dietlibc, klibc and static-glibc based binaries. This works by copying what we need from Glibc into the initrd and using patchelf to set the ELF interpreter and RPATH correctly. The resulting initrd is about 500 KB smaller, but more importantly, it's much easier to maintain - all those dietlibc/klibc/static-glibc builds frequently cause build problems. svn path=/nixos/branches/fix-style/; revision=14178
307 lines
7.3 KiB
Bash
307 lines
7.3 KiB
Bash
#! @shell@
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targetRoot=/mnt/root
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export LD_LIBRARY_PATH=@extraUtils@/lib
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errorDialog() {
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timeout=15
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echo
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echo "Press within $timeout seconds:"
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echo " i) to launch an interactive shell"
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echo " f) to start an interactive shell having pid 1"
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echo " (needed if you want to start Stage 2 manually)"
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echo " *) to continue immediately (ignoring the failing command)"
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read -t $timeout reply
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case $reply in
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f)
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exec @shell@;;
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i)
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echo
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echo "Quit interactive shell with exit status of"
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echo " 0 : to continue"
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echo " non-zero : to get this dialog again"
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@shell@ || fail
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;;
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*)
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echo continuing ignoring error;;
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esac
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}
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fail() {
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# If starting stage 2 failed, start an interactive shell.
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echo "error while running Stage 1"
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echo "Stage 1 should mount the root partition containing the nix store on \`$targetRoot'";
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echo
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errorDialog
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}
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trap 'fail' ERR;
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# Poor man's `basename'.
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basename() {
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local s="$1"
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set -- $(IFS=/; echo $s)
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local res
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while test $# != 0; do res=$1; shift; done
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echo $res
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}
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# Print a greeting.
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echo
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echo "<<< NixOS Stage 1 >>>"
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echo
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# Set the PATH.
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export PATH=/empty
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for i in @path@; do
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PATH=$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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# Mount special file systems.
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mkdir -p /etc # to shut up mount
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echo -n > /etc/fstab # idem
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mkdir -p /proc
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mount -t proc none /proc
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mkdir -p /sys
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mount -t sysfs none /sys
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# Process the kernel command line.
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stage2Init=/init
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for o in $(cat /proc/cmdline); do
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case $o in
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init=*)
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set -- $(IFS==; echo $o)
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stage2Init=$2
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;;
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debugtrace)
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# Show each command.
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set -x
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;;
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debug1) # stop right away
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fail
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;;
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debug1devices) # stop after loading modules and creating device nodes
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debug1devices=1
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;;
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debug1mounts) # stop after mounting file systems
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debug1mounts=1
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;;
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esac
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done
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# Load some kernel modules.
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for i in $(cat @modulesClosure@/insmod-list); do
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echo "loading module $(basename $i)..."
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insmod $i || true
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done
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# Create /dev/null.
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mknod /dev/null c 1 3
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# Try to resume - all modules are loaded now.
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if test -e /sys/power/tuxonice/resume; then
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if test -n "$(cat /sys/power/tuxonice/resume)"; then
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echo 0 > /sys/power/tuxonice/user_interface/enabled
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echo 1 > /sys/power/tuxonice/do_resume || echo "Failed to resume..."
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fi
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fi
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echo "@resumeDevice@" > /sys/power/resume 2> /dev/null || echo "Failed to resume..."
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echo shutdown > /sys/power/disk
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# Create device nodes in /dev.
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export UDEV_CONFIG_FILE=@udevConf@
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udevd --daemon
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udevadm trigger
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udevadm settle
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if type -p dmsetup > /dev/null; then
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echo "dmsetup found, starting device mapper and lvm"
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dmsetup mknodes
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lvm vgscan --ignorelockingfailure
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lvm vgchange -ay --ignorelockingfailure
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fi
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if test -n "$debug1devices"; then fail; fi
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# Return true if the machine is on AC power, or if we can't determine
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# whether it's on AC power.
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onACPower() {
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if test -d "/proc/acpi/battery"; then
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if ls /proc/acpi/battery/BAT[0-9]* > /dev/null 2>&1; then
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if cat /proc/acpi/battery/BAT*/state \
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| grep "^charging state" \
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| grep -q "discharg" ; then
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false
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else
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true
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fi
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else
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true
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fi
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else
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true
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fi
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}
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# Check the specified file system, if appropriate.
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checkFS() {
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# Only check block devices.
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if ! test -b "$device"; then return 0; fi
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# For unclean ext3 file systems, fsck.ext3 should just replay the
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# journal and exit, but in practice this takes *much* longer than
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# letting the kernel recover the FS. So, don't run fsck on
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# journalling file systems.
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eval $(fstype "$device")
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if test "$FSTYPE" = ext3 -o "$FSTYPE" = ext4 -o "$FSTYPE" = reiserfs -o "$FSTYPE" = xfs -o "$FSTYPE" = jfs; then
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return 0;
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fi
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# Don't run `fsck' if the machine is on battery power. !!! Is
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# this a good idea?
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if ! onACPower; then
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echo "on battery power, so \`fsck' not run on \`$device'"
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return 0
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fi
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FSTAB_FILE="/etc/mtab" fsck -V -v -C -a "$device"
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fsckResult=$?
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if test $(($fsckResult | 2)) = $fsckResult; then
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echo "fsck finished, rebooting..."
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sleep 3
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reboot
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fi
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if test $(($fsckResult | 4)) = $fsckResult; then
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echo "$device has unrepaired errors, please fix them manually."
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fail
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fi
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if test $fsckResult -ge 8; then
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echo "fsck on $device failed."
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fail
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fi
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return 0
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}
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# Function for mounting a file system.
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mountFS() {
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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="$4"
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checkFS "$device"
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# Mount read-writable.
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mount -t "$fsType" -o "$options" "$device" /mnt-root$mountPoint || fail
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}
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# Try to find and mount the root device.
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mkdir /mnt-root
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mountPoints=(@mountPoints@)
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devices=(@devices@)
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fsTypes=(@fsTypes@)
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optionss=(@optionss@)
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for ((n = 0; n < ${#mountPoints[*]}; n++)); do
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mountPoint=${mountPoints[$n]}
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device=${devices[$n]}
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fsType=${fsTypes[$n]}
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options=${optionss[$n]}
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# !!! Really quick hack to support bind mounts, i.e., where the
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# "device" should be taken relative to /mnt-root, not /. Assume
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# that every device that starts with / but doesn't start with /dev
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# is a bind mount.
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case $device in
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/dev/*)
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;;
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/*)
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device=/mnt-root$device
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;;
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esac
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# USB storage devices tend to appear with some delay. It would be
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# great if we had a way to synchronously wait for them, but
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# alas... So just wait for a few seconds for the device to
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# appear. If it doesn't appear, try to mount it anyway (and
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# probably fail). This is a fallback for non-device "devices"
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# that we don't properly recognise (like NFS mounts).
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if ! test -e $device; then
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echo -n "waiting for device $device to appear..."
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for ((try = 0; try < 10; try++)); do
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sleep 1
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if test -e $device; then break; fi
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echo -n "."
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done
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echo
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fi
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echo "mounting $device on $mountPoint..."
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mountFS "$device" "$mountPoint" "$options" "$fsType"
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done
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# If this is a live-CD/DVD, then union-mount a tmpfs on top of the
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# original root.
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targetRoot=/mnt-root
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if test -n "@isLiveCD@"; then
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mkdir /mnt-tmpfs
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mount -t tmpfs -o "mode=755" none /mnt-tmpfs
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mkdir /mnt-union
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mount -t aufs -o dirs=/mnt-tmpfs=rw:$targetRoot=ro none /mnt-union
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targetRoot=/mnt-union
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fi
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# Stop udevd.
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kill $(minips -C udevd -o pid=)
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if test -n "$debug1mounts"; then fail; fi
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# `run-init' needs a /dev/console on the target FS.
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if ! test -e $targetRoot/dev/console; then
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mkdir -p $targetRoot/dev
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mknod $targetRoot/dev/console c 5 1
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fi
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# Start stage 2. `run-init' deletes all files in the ramfs on the
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# current /.
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if test -z "$stage2Init"; then fail; fi
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umount /sys
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umount /proc
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exec run-init "$targetRoot" "$stage2Init"
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echo
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echo "$1: failed running $stage2Init"
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echo "Dropping into a root shell..."
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export $stage2Init; exec @shell@
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