Tidy up appliance rescue code.

[libguestfs.git] / appliance / init

diff --git a/appliance/init b/appliance/init
index 41ce916..8b97590 100755 (executable)
--- a/appliance/init
+++ b/appliance/init
@@ -1,28 +1,71 @@
 #!/bin/sh
+
 echo Starting /init script ...
+
 PATH=/sbin:/usr/sbin:$PATH
-mount -t tmpfs none /dev
-mkdir /dev/pts /dev/shm /dev/mapper
-MAKEDEV mem null port zero core full ram tty console fd \
-  hda hdb hdc hdd sda sdb sdc sdd loop sd
-mknod /dev/ptmx c 5 2; chmod 0666 /dev/ptmx
-mknod /dev/random c 1 8;  chmod 0666 /dev/random
-mknod /dev/urandom c 1 9; chmod 0444 /dev/urandom
+
 mount -t proc /proc /proc
 mount -t sysfs /sys /sys
-mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
-ln -sf /proc/self/fd/0 /dev/stdin
-ln -sf /proc/self/fd/1 /dev/stdout
-ln -sf /proc/self/fd/2 /dev/stderr
-modprobe virtio_pci
-modprobe virtio_net
+
+if [ -x /etc/init.d/udev ]; then
+  /etc/init.d/udev start
+elif [ -x /sbin/start_udev ]; then
+  /sbin/start_udev
+else
+  echo No udev, creating /dev manually
+  mount -t tmpfs none /dev
+  mkdir /dev/pts /dev/shm /dev/mapper
+  mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
+  # Must do each MAKEDEV individually, because if one device fails,
+  # MAKEDEV will quit without creating the rest (RHBZ#507374).
+  for dev in mem null port zero core full ram tty console fd \
+    hda hdb hdc hdd sda sdb sdc sdd loop sd; do
+    MAKEDEV $dev ||:
+  done
+  mknod /dev/ptmx c 5 2;    chmod 0666 /dev/ptmx
+  mknod /dev/random c 1 8;  chmod 0666 /dev/random
+  mknod /dev/urandom c 1 9; chmod 0444 /dev/urandom
+  ln -sf /proc/self/fd/0 /dev/stdin
+  ln -sf /proc/self/fd/1 /dev/stdout
+  ln -sf /proc/self/fd/2 /dev/stderr
+
+  modprobe virtio_pci
+  modprobe virtio_net
+fi
+
+if grep -sq selinux=1 /proc/cmdline; then
+  mount -t selinuxfs none /selinux
+fi
+
 modprobe dm_mod ||:
-/sbin/ifconfig lo 127.0.0.1
-/sbin/ifconfig eth0 10.0.2.10
-/sbin/route add default gw 10.0.2.2
+
+ifconfig lo 127.0.0.1
+ifconfig eth0 10.0.2.10
+route add default gw 10.0.2.2
+
 lvm vgscan --ignorelockingfailure
 lvm vgchange -ay --ignorelockingfailure
-if grep -sq guestfs_rescue=1 /proc/cmdline; then
-  bash -i
+
+# Keep these to enhance the usefulness of debug output.
+ls -l /dev
+cat /proc/mounts
+lvm pvs
+lvm vgs
+lvm lvs
+ifconfig
+netstat -rn
+lsmod
+#ping -n -v -c 5 10.0.2.2
+#ping -n -v -c 5 10.0.2.4
+
+# Improve virtio-blk performance (RHBZ#509383).
+for f in /sys/block/vd*/queue/rotational; do echo 1 > $f; done
+
+if ! grep -sq guestfs_rescue=1 /proc/cmdline; then
+  exec guestfsd -f
 fi
-exec guestfsd -f
+
+TERM=linux ;# XXX library should pass this from library's environment
+PS1='><rescue> '
+export TERM PS1
+exec bash -i