Reorganizing components in source tree.
[live-boot-grml.git] / components / 9990-main.sh
diff --git a/components/9990-main.sh b/components/9990-main.sh
new file mode 100755 (executable)
index 0000000..e67176e
--- /dev/null
@@ -0,0 +1,210 @@
+#!/bin/sh
+
+# set -e
+
+Live ()
+{
+       if [ -x /scripts/local-top/cryptroot ]
+       then
+               /scripts/local-top/cryptroot
+       fi
+
+       exec 6>&1
+       exec 7>&2
+       exec > boot.log
+       exec 2>&1
+       tail -f boot.log >&7 &
+       tailpid="${!}"
+
+       . /live.vars
+
+       LIVE_BOOT_CMDLINE="${LIVE_BOOT_CMDLINE:-$(cat /proc/cmdline)}"
+       Cmdline_old
+
+       Debug
+
+       Read_only
+
+       Select_eth_device
+
+       if [ -e /conf/param.conf ]
+       then
+               . /conf/param.conf
+       fi
+
+       # Needed here too because some things (*cough* udev *cough*)
+       # changes the timeout
+
+       if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
+       then
+               if do_netmount
+               then
+                       livefs_root="${mountpoint}"
+               else
+                       panic "Unable to find a live file system on the network"
+               fi
+       else
+               if [ -n "${ISCSI_PORTAL}" ]
+               then
+                       do_iscsi && livefs_root="${mountpoint}"
+               elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
+               then
+                       # Do a local boot from hd
+                       livefs_root=${ROOT}
+               else
+                       if [ -x /usr/bin/memdiskfind ]
+                       then
+                               MEMDISK=$(/usr/bin/memdiskfind)
+
+                               if [ $? -eq 0 ]
+                               then
+                                       # We found a memdisk, set up phram
+                                       modprobe phram phram=memdisk,${MEMDISK}
+
+                                       # Load mtdblock, the memdisk will be /dev/mtdblock0
+                                       modprobe mtdblock
+                               fi
+                       fi
+
+                       # Scan local devices for the image
+                       i=0
+                       while [ "$i" -lt 60 ]
+                       do
+                               livefs_root=$(find_livefs ${i})
+
+                               if [ -n "${livefs_root}" ]
+                               then
+                                       break
+                               fi
+
+                               sleep 1
+                               i="$(($i + 1))"
+                       done
+               fi
+       fi
+
+       if [ -z "${livefs_root}" ]
+       then
+               panic "Unable to find a medium containing a live file system"
+       fi
+
+       Verify_checksums "${livefs_root}"
+
+       if [ "${TORAM}" ]
+       then
+               live_dest="ram"
+       elif [ "${TODISK}" ]
+       then
+               live_dest="${TODISK}"
+       fi
+
+       if [ "${live_dest}" ]
+       then
+               log_begin_msg "Copying live media to ${live_dest}"
+               copy_live_to "${livefs_root}" "${live_dest}"
+               log_end_msg
+       fi
+
+       # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
+       # because the mountpoint is left behind in /proc/mounts, so let's get
+       # rid of it when running from RAM
+       if [ -n "$FROMISO" ] && [ "${TORAM}" ]
+       then
+               losetup -d /dev/loop0
+
+               if is_mountpoint /live/fromiso
+               then
+                       umount /live/fromiso
+                       rmdir --ignore-fail-on-non-empty /live/fromiso \
+                               >/dev/null 2>&1 || true
+               fi
+       fi
+
+       if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
+       then
+               setup_unionfs "${livefs_root}" "${rootmnt}"
+       else
+               mac="$(get_mac)"
+               mac="$(echo ${mac} | sed 's/-//g')"
+               mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
+       fi
+
+       # At this point /root should contain the final root filesystem.
+       # Move all mountpoints below /live into /root/lib/live/mount.
+       # This has to be done after mounting the root filesystem to /
+       # otherwise these mount points won't be accessible from the running system.
+       for _MOUNT in $(cat /proc/mounts | cut -f 2 -d " " | grep -e "^/live/")
+       do
+               local newmount
+               newmount="${rootmnt}/lib/live/mount/${_MOUNT#/live/}"
+               mkdir -p "${newmount}"
+               mount -o move "${_MOUNT}" "${newmount}" > /dev/null 2>&1 || \
+               mount -o bind "${_MOUNT}" "${newmount}" > /dev/null || \
+               log_warning_msg "W: failed to move or bindmount ${_MOUNT} to ${newmount}"
+       done
+
+       if [ -n "${ROOT_PID}" ]
+       then
+               echo "${ROOT_PID}" > "${rootmnt}"/lib/live/root.pid
+       fi
+
+       log_end_msg
+
+       # unionfs-fuse needs /dev to be bind-mounted for the duration of
+       # live-bottom; udev's init script will take care of things after that
+       case "${UNIONTYPE}" in
+               unionfs-fuse)
+                       mount -n -o bind /dev "${rootmnt}/dev"
+                       ;;
+       esac
+
+
+       # aufs2 in kernel versions around 2.6.33 has a regression:
+       # directories can't be accessed when read for the first the time,
+       # causing a failure for example when accessing /var/lib/fai
+       # when booting FAI, this simple workaround solves it
+       ls /root/* >/dev/null 2>&1
+
+       # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
+       # because the mountpoint is left behind in /proc/mounts, so let's get
+       # rid of it when running from RAM
+       if [ -n "$FINDISO" ] && [ "${TORAM}" ]
+       then
+               losetup -d /dev/loop0
+
+               if is_mountpoint /root/lib/live/mount/findiso
+               then
+                       umount /root/lib/live/mount/findiso
+                       rmdir --ignore-fail-on-non-empty /root/lib/live/mount/findiso \
+                               >/dev/null 2>&1 || true
+               fi
+       fi
+
+       if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
+       then
+               log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
+               cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
+               log_end_msg
+       fi
+
+       if ! [ -d "/lib/live/boot" ]
+       then
+               panic "A wrong rootfs was mounted."
+       fi
+
+       Fstab
+       Netbase
+
+       Swap
+
+       case "${UNIONFS}" in
+               unionfs-fuse)
+                       umount "${rootmnt}/dev"
+                       ;;
+       esac
+
+       exec 1>&6 6>&-
+       exec 2>&7 7>&-
+       kill ${tailpid}
+       [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && cp boot.log "${rootmnt}/var/log/live" 2>/dev/null
+}