mirror of
https://github.com/dracutdevs/dracut.git
synced 2024-10-27 00:55:34 +03:00
strip "init=" from INIT
This commit is contained in:
parent
54b4419653
commit
65381749c8
112
init
Executable file
112
init
Executable file
@ -0,0 +1,112 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# Licensed under the GPLv2
|
||||
#
|
||||
# Copyright 2008, Red Hat, Inc.
|
||||
# Jeremy Katz <katzj@redhat.com>
|
||||
|
||||
emergency_shell()
|
||||
{
|
||||
echo ; echo
|
||||
echo "Bug in initramfs /init detected. Dropping to a shell. Good luck!"
|
||||
echo
|
||||
sh -i
|
||||
}
|
||||
|
||||
getarg() {
|
||||
local o line
|
||||
for o in $CMDLINE; do
|
||||
[ "${o%%=*}" = "$1" ] && { echo $o; return 0; }
|
||||
done
|
||||
return 1
|
||||
}
|
||||
|
||||
source_all() {
|
||||
local f
|
||||
[ "$1" ] && [ -d "/$1" ] || return
|
||||
for f in "/$1"/*.sh; do [ -f "$f" ] && . "$f"; done
|
||||
}
|
||||
|
||||
echo "Starting initrd..."
|
||||
export PATH=/sbin:/bin:/usr/sbin:/usr/bin
|
||||
export TERM=linux
|
||||
CONSOLE=/dev/console
|
||||
[ -c $CONSOLE ] && exec >$CONSOLE 2>&1 <$CONSOLE
|
||||
trap "emergency_shell" 0
|
||||
# mount some important things
|
||||
mount -t proc /proc /proc
|
||||
mount -t sysfs /sys /sys
|
||||
mount -t tmpfs -omode=0755 udev /dev
|
||||
read CMDLINE </proc/cmdline;
|
||||
|
||||
|
||||
# FIXME: what device nodes does plymouth really _need_ ?
|
||||
mknod /dev/ptmx c 5 2
|
||||
mknod /dev/console c 5 0
|
||||
mknod /dev/fb c 29 0
|
||||
mkdir /dev/pts
|
||||
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
|
||||
mknod /dev/tty0 c 4 0
|
||||
mknod /dev/tty1 c 4 1
|
||||
mknod /dev/null c 1 3
|
||||
|
||||
source_all pre-udev
|
||||
|
||||
# start up udev and trigger cold plugs
|
||||
udevd --daemon
|
||||
udevadm trigger >/dev/null 2>&1
|
||||
|
||||
# mount the rootfs
|
||||
NEWROOT="/sysroot"
|
||||
|
||||
# FIXME: there's got to be a better way ...
|
||||
# it'd be nice if we had a udev rule that just did all of the bits for
|
||||
# figuring out what the specified root is and linking it /dev/root
|
||||
root=$(getarg root); root=${root#root=}
|
||||
case $root in
|
||||
LABEL=*) root=${root#LABEL=}
|
||||
root="$(echo $root |sed 's,/,\\x2f,g')"
|
||||
root="/dev/disk/by-label/${root}" ;;
|
||||
UUID=*) root="/dev/disk/by-uuid/${root#UUID=}" ;;
|
||||
'') echo "Warning: no root specified"
|
||||
root="/dev/sda1" ;;
|
||||
esac
|
||||
|
||||
# should we have a timeout?
|
||||
tries=0
|
||||
echo "Waiting up to 30 seconds for $root to become available"
|
||||
udevadm settle --timeout=30
|
||||
source_all pre-mount
|
||||
|
||||
echo "Trying to mount rootfs $root"
|
||||
if rflags="$(getarg rootflags)"; then
|
||||
rflags="${rflags#rootflags=}"
|
||||
getarg rw >/dev/null && rflags="${rflags},rw" || rflags="${rflags},ro"
|
||||
else
|
||||
getarg rw >/dev/null && rflags=rw || rflags=ro
|
||||
fi
|
||||
[ -e "$root" ] || emergency_shell
|
||||
ln -s "$root" /dev/root
|
||||
fstype="$(getarg rootfstype)" && fstype="-t ${fstype#rootfstype=}"
|
||||
mount $fstype -o $rflags /dev/root $NEWROOT || emergency_shell
|
||||
|
||||
INIT=$(getarg init); INIT=${INIT#init=}
|
||||
[ "$INIT" ] || {
|
||||
for i in /sbin/init /etc/init /init /bin/sh; do
|
||||
[ -x "$NEWROOT$i" ] && { INIT="$i"; break; }
|
||||
done
|
||||
[ "$INIT" ] || {
|
||||
echo "Cannot find init! Please check to make sure you passed"
|
||||
echo "a valid root filesystem! Dropping to a shell."
|
||||
emergency_shell
|
||||
}
|
||||
}
|
||||
|
||||
source_all pre-pivot
|
||||
echo "Switching to real root filesystem $root"
|
||||
exec switch_root "$NEWROOT" "$INIT" $CMDLINE || {
|
||||
# davej doesn't like initrd bugs
|
||||
echo "Something went very badly wrong in the initrd. Please "
|
||||
echo "file a bug against mkinitrd."
|
||||
emergency_shell
|
||||
}
|
Loading…
Reference in New Issue
Block a user