diff options
Diffstat (limited to 'sys-boot/myinitramfs/files/init')
-rwxr-xr-x | sys-boot/myinitramfs/files/init | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/sys-boot/myinitramfs/files/init b/sys-boot/myinitramfs/files/init deleted file mode 100755 index 134d85c..0000000 --- a/sys-boot/myinitramfs/files/init +++ /dev/null @@ -1,99 +0,0 @@ -#!/bin/busybox sh -# vim:ft=sh - -# Init must have pid 1 otherwise switch_root won't work. -if [ $$ -ne 1 ]; then - echo "init must have pid 1!" - exit 1 -fi - -# Predefice colors -C_NO="\e[0m" -C_GRAY="\e[1;30m" -C_RED="\e[1;31m" -C_GREEN="\e[1;32m" -C_YELLOW="\e[1;33m" - -PATH="$PATH:/bin:/sbin" - -# disable kernel message from terminal and clear screen -echo 0 > /proc/sys/kernel/printk -clear - -# TODO print some welcome ascii art :-) - -# Function called if we fail. Argument is error message. -fail() { - echo -e "${C_RED}$@${C_NO}" - echo -e "${C_YELLOW}Dropping to interactive shell${C_NO}" - busybox --install -s - while true; do - echo -e "${C_GRAY}Mount root to /mnt/root and exit shell to switch root.${C_NO}" - # Note: this is hack to enable job control - setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1' - echo - exec switch_root /mnt/root /sbin/init || echo -e "${C_RED}Root switch failed!${C_NO}" - done -} - -# Preliminary mounts -busybox mount -t proc none /proc || fail "/proc mount failed!" -busybox mount -t sysfs none /sys || fail "/sys mount failed!" -busybox mount -t devtmpfs none /dev || fail "/dev mount failed!" - -# Now open and mount root -root="" -rootflags="" -recovery=false - -for opt in $(cat /proc/cmdline); do - case "$opt" in - root=*) - root=${opt:5} - ;; - rootflags=*) - rootflags=${opt:10} - ;; - recovery) - recovery=true - ;; - BOOT_IMAGE=*|initrd=*) - # Ignore those - ;; - *) - echo -e "${C_YELLOW}Unknown kernel argument: $opt${C_NO}" - ;; - esac -done - -$recovery && fail "Requested recovery." - -[ -z "$root" ] && fail "Missing root argument!" - -echo -ne "${C_GRAY}Waiting for root ($root)..." -CNT=10 -while [ ! -e "$root" ] && [ $CNT -gt 0 ]; do - CNT=$(expr $CNT - 1) - sleep 1 - echo -n " $CNT" -done -echo -e "${C_NO}" -[ -e "$root" ] || fail "Root not located!" - -# TODO mount boot parition and look for key saved there (on unlock remove it) - -echo -e "${C_GREEN}Unlocking root...${C_NO}" -cryptsetup open "$root" encroot || fail "Unlocking root failed! /proc/cmdline=$(cat /proc/cmdline)" - -echo -e "${C_GREEN}Mounting root...${C_NO}" -mount -t btrfs -o "$rootflags" /dev/mapper/encroot /mnt/root \ - || fail "Mounting root failed! /proc/cmdline=$(cat /proc/cmdline)" - - -echo -e "${C_GREEN}Switching to real root${C_NO}" - -# First clean up. The init process will remount proc, sys and dev later on -busybox umount /dev /sys /proc || fail "Unmouns failed!" - -# Now do switch -exec switch_root /mnt/root /sbin/init || fail "Root switch failed!" |