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make-initrd

Unnamed repository; edit this file 'description' to name the repository. git clone https://anongit.hacktivis.me/git/make-initrd.git/

init (2206B)

    

  1. #!/bin/sh
  2. # Copyright 2017-2022 Haelwenn (lanodan) Monnier <contact@hacktivis.me>
  3. # SPDX-License-Identifier: ISC
  5. export PATH=/bin:/sbin:/usr/bin:/usr/sbin
  6. export init=/sbin/init newroot=/newroot root=ZFS=zroot/ROOT/gentoo sh=/bin/sh level=3\ -a dev_hotplug=mdev
  8. rescueshell() {
  9. 	export PS1='rsh:$(tty | cut -c6-):$PWD # '
  10. 	if command -v setsid >/dev/null; then
  11. 		# shellcheck disable=SC2094
  12. 		setsid "$sh" -i -0<"$console" 1>"$console" 2>&1
  13. 	else
  14. 		# shellcheck disable=SC2094
  15. 		"$sh" -i 0<"$console" 1>"$console" 2>&1
  16. 	fi
  17. }
  19. die() {
  20. 	echo "Dropping into a rescueshell..."
  21. 	rescueshell || exec $sh -i
  22. }
  24. getdev() {
  25. 	case "$1" in
  26. 		UUID=*|LABEL=*)
  27. 			findfs "$1"
  28. 		;;
  29. 		*-*-*-*)
  30. 			findfs "UUID=$1"
  31. 		;;
  32. 		*)
  33. 			echo "$1"
  34. 		;;
  35. 	esac
  36. }
  38. set -v
  40. /bin/busybox --install /usr/bin
  42. umask 0077
  43. mount -t proc proc /proc
  44. mount -t sysfs sysfs /sys
  45. if grep -q devtmpfs /proc/filesystems; then
  46. 	mount -t devtmpfs devtmpfs /dev
  47. else
  48. 	mount -t tmpfs tmpfs /dev
  49. fi
  51. # shellcheck disable=SC2013
  52. for arg in $(cat /proc/cmdline); do
  53. 	case $arg in
  54. 		rescue*)
  55. 			export rescue=1
  56. 		;;
  57. 		single)
  58. 			export level=2
  59. 		;;
  60. 		level*|init*|root*|crypt_root*|sh*|dev_hotplug*)
  61. 			# shellcheck disable=SC2163
  62. 			export "$arg"
  63. 		;;
  64. 	esac
  65. done
  67. root="${root/#ZFS=}"
  69. "$dev_hotplug" -s || die
  71. command -v "$dev_hotplug" > /proc/sys/kernel/hotplug
  73. [ -h /dev/fd     ] || ln -fs /proc/self/fd     /dev/fd
  74. [ -h /dev/stderr ] || ln -fs /proc/self/stderr /dev/stderr
  75. [ -h /dev/stdin  ] || ln -fs /proc/self/stdin  /dev/stdin
  76. [ -h /dev/stdout ] || ln -fs /proc/self/stdout /dev/stdout
  77. : "${console:=/dev/console}"
  78. # shellcheck disable=SC2094
  79. exec 0<"$console" 1>"$console" 2>&1
  81. test -n "$crypt_root" && {
  82. 	rootdev=$(getdev "$crypt_root")
  84. 	if test -f /keyfile; then
  85. 		cryptsetup --key-file /keyfile open "$rootdev" luks-"${rootdev##*/}" || \
  86. 		cryptsetup open "$rootdev" luks-"${rootdev##*/}" || die
  87. 	else
  88. 		cryptsetup open "$rootdev" luks-"${rootdev##*/}" || die
  89. 	fi
  90. }
  92. /load_modules.sh || die
  94. pool="${root%%/*}"
  96. zpool import -d /dev/mapper -d /dev -N "$pool" || die
  98. mount -t zfs -o rw,zfsutil "$root" "$newroot" || die
  100. for d in /proc /sys /dev; do umount -l "$d"; done
  102. exec switch_root "$newroot" "${init:-/sbin/init}" "$level" || die