62 lines
2.0 KiB
Bash
Executable File
62 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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# Nimux pre-systemd boot
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export ROOT_DEV=/dev/ram0
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export RUN_NIMUX=/run/nimux
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export ROOTFS_ORIG=$RUN_NIMUX/rootfs.orig
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export NIMUX_OVERLAY=$RUN_NIMUX/overlay
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# create the minimal required mount
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/bin/echo "[init] Cmdline:" "$@"
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/bin/echo "[init] perform early mounts"
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/bin/mount -t proc proc /proc
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/bin/mount -t sysfs sysfs /sys
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/bin/mount -t devtmpfs devtmpfs /dev
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/bin/mount -t tmpfs tmpfs /run
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/bin/mount -t tmpfs tmpfs /mnt
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# mount root on a future accesable place
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/bin/echo "[init] re-mount rootfs"
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/bin/mkdir -p $ROOTFS_ORIG
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/bin/mount -t squashfs -o ro $ROOT_DEV $ROOTFS_ORIG
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/bin/mount --make-rprivate $ROOTFS_ORIG
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# overlay the /var directory with a volatile tmpfs
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/bin/echo "[init] overlay /var"
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export VAR_LOWER=$ROOTFS_ORIG/var
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export VAR_UPPER=$NIMUX_OVERLAY/var/upper
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export VAR_WORK=$NIMUX_OVERLAY/var/work
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/bin/mkdir -p $VAR_UPPER $VAR_WORK
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/bin/mount -t overlay overlay-var -o lowerdir=$VAR_LOWER,upperdir=$VAR_UPPER,workdir=$VAR_WORK /var
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# ovelay /etc and patch with persistant storage
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# we don´t overlay on persistent storage, because this will cause bootfailures
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# when the lower dir (rootfs.squashfs) is updated by a future release of Numix
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/bin/echo "[init] overlay /etc"
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export ETC_LOWER=$ROOTFS_ORIG/etc
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export ETC_UPPER=$NIMUX_OVERLAY/etc/upper
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export ETC_WORK=$NIMUX_OVERLAY/etc/work
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/bin/mkdir -p $ETC_UPPER $ETC_WORK
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/bin/mount -t overlay overlay-etc -o lowerdir=$ETC_LOWER,upperdir=$ETC_UPPER,workdir=$ETC_WORK /etc
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# import zpool (this will also mount etc & home)
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/bin/echo "[init] import zpool"
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/sbin/zpool import nimux-zfs
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# update etc dir with persitent data
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export ETC_PERSIST=$NIMUX_OVERLAY/etc/persist
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/bin/echo "[init] update /etc with persistant data"
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/bin/echo "[init] /etc persist dir: " $ETC_PERSIST
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/bin/cp -R $ETC_PERSIST/* /etc
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# hand over to systemd
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/bin/echo "[init] handover control to systemd"
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exec /usr/lib/systemd/systemd
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# we shouldn´t get to here
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echo "[init] ERROR: switch_root failed!" >&2
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export PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] (init-rescue)# "
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exec sh
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