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119 lines
3.1 KiB
119 lines
3.1 KiB
#!/bin/bash |
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# |
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# Licensed under the GPLv2 |
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# |
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# Copyright 2008, Red Hat, Inc. |
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# Jeremy Katz <katzj@redhat.com> |
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emergency_shell() |
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{ |
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[ -x /bin/plymouth ] && /bin/plymouth --hide-splash |
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echo ; echo |
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echo "Bug in initramfs /init detected. Dropping to a shell. Good luck!" |
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echo |
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bash < /dev/console |
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} |
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trap "emergency_shell" 0 2 |
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echo "Starting initrd..." |
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export PATH=/sbin:/bin:/usr/sbin:/usr/bin |
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export TERM=linux |
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# /dev/console comes from the built-in initramfs crud in the kernel |
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# someday, we may need to mkdir /dev first here |
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exec > /dev/console 2>&1 < /dev/console |
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# mount some important things |
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mount -t proc /proc /proc |
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mount -t sysfs /sys /sys |
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mount -t tmpfs -omode=0755 udev /dev |
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# FIXME: what device nodes does plymouth really _need_ ? |
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mknod /dev/ptmx c 5 2 |
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mknod /dev/fb c 29 0 |
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mkdir /dev/pts |
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mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts |
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mknod /dev/tty0 c 4 0 |
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mknod /dev/tty1 c 4 1 |
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# start plymouth if it's available |
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# arguably we need some of udev run first for fbmods and above devnodes :/ |
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[ -x /bin/plymouthd ] && /bin/plymouthd --attach-to-session |
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[ -x /bin/plymouth ] && /bin/plymouth --show-splash |
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# start up udev and trigger cold plugs |
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/sbin/udevd --daemon |
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/sbin/udevadm trigger |
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# mount the rootfs |
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NEWROOT="/sysroot" |
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# FIXME: there's got to be a better way ... |
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# it'd be nice if we had a udev rule that just did all of the bits for |
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# figuring out what the specified root is and linking it /dev/root |
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for o in `cat /proc/cmdline` ; do |
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case $o in |
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root=*) |
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root=${o#root=} |
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;; |
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esac |
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done |
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echo -n "Going to mount rootfs ($root)" |
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if [ -z "$root" ]; then |
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echo "Warning: no root specified" |
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root="/dev/sda1" |
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elif [ "${root#LABEL=}" != $root ]; then |
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# FIXME: may need to do more escaping here |
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l=${root#LABEL=} |
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label=${l//\//\\x2f} |
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root="/dev/disk/by-label/${label}" |
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elif [ "${root#UUID=}" != $root ]; then |
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root="/dev/disk/by-uuid/${root#UUID=}" |
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fi |
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# should we have a timeout? |
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tries=0 |
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while [ ! -e $root ]; do |
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echo -n "." |
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sleep 1 |
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tries=$(($tries + 1)) |
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if [ $tries -gt 300 ]; then |
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emergency_shell |
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fi |
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done |
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echo -e "\n\nMounting rootfs after $tries seconds" |
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ln -s "$root" /dev/root |
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mount -o ro /dev/root $NEWROOT |
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# now we need to prepare to switchroot |
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mount --bind /dev $NEWROOT/dev |
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# FIXME: now for a bunch of boiler-plate mounts. really, we should have |
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# some like /etc/fstab.sys that's provided by filesystem/initscripts |
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# and then do mount -f /etc/fstab.sys -a |
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mount -t proc /proc $NEWROOT/proc |
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mount -t sysfs /sys $NEWROOT/sys |
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# FIXME: load selinux policy. this should really be done after we switchroot |
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if [ -x $NEWROOT/usr/sbin/load_policy ]; then |
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chroot $NEWROOT /usr/sbin/load_policy -i |
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if [ $? -eq 3 ]; then |
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echo "Initial SELinux policy load failed and enforcing mode requested." |
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echo "Not continuing" |
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sleep 100d |
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exit 1 |
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fi |
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fi |
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# kill off udev |
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kill `pidof udevd` |
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[ -x /bin/plymouth ] && /bin/plymouth --newroot=$NEWROOT |
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# FIXME: nash die die die |
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exec /sbin/switch_root |
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# davej doesn't like initrd bugs |
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echo "Something went very badly wrong in the initrd. Please " |
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echo "file a bug against mkinitrd." |
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sleep 100d |
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exit 1
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