scripts/boot/9990-main.sh

   1 #!/bin/sh
   2
   3 # set -e
   4
   5 Main ()
   6 {
   7         if [ -x /scripts/local-top/cryptroot ]
   8         then
   9                 /scripts/local-top/cryptroot
  10         fi
  11
  12         exec 6>&1
  13         exec 7>&2
  14         exec > boot.log
  15         exec 2>&1
  16         tail -f boot.log >&7 &
  17         tailpid="${!}"
  18
  19         . /live.vars
  20
  21         _CMDLINE="$(cat /proc/cmdline)"
  22         Cmdline_old
  23
  24         Debug
  25
  26         Read_only
  27
  28         Select_eth_device
  29
  30         if [ -e /conf/param.conf ]
  31         then
  32                 . /conf/param.conf
  33         fi
  34
  35         if [ -n "${FUSE_MOUNT}" ]
  36         then
  37                 # fuse does not work with klibc mount
  38                 ln -f /bin/mount.util-linux /bin/mount
  39         fi
  40
  41         # Needed here too because some things (*cough* udev *cough*)
  42         # changes the timeout
  43
  44         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
  45         then
  46                 if do_netmount
  47                 then
  48                         livefs_root="${mountpoint}"
  49                 else
  50                         panic "Unable to find a live file system on the network"
  51                 fi
  52         else
  53                 if [ -n "${ISCSI_PORTAL}" ]
  54                 then
  55                         do_iscsi && livefs_root="${mountpoint}"
  56                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
  57                 then
  58                         # Do a local boot from hd
  59                         livefs_root=${ROOT}
  60                 else
  61                         if [ -x /usr/bin/memdiskfind ]
  62                         then
  63                                 MEMDISK=$(/usr/bin/memdiskfind)
  64
  65                                 if [ $? -eq 0 ]
  66                                 then
  67                                         # We found a memdisk, set up phram
  68                                         modprobe phram phram=memdisk,${MEMDISK}
  69
  70                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
  71                                         modprobe mtdblock
  72                                 fi
  73                         fi
  74
  75                         # Scan local devices for the image
  76                         i=0
  77                         while [ "$i" -lt 60 ]
  78                         do
  79                                 livefs_root=$(find_livefs ${i})
  80
  81                                 if [ -n "${livefs_root}" ]
  82                                 then
  83                                         break
  84                                 fi
  85
  86                                 sleep 1
  87                                 i="$(($i + 1))"
  88                         done
  89                 fi
  90         fi
  91
  92         if [ -z "${livefs_root}" ]
  93         then
  94                 panic "Unable to find a medium containing a live file system"
  95         fi
  96
  97         Verify_checksums "${livefs_root}"
  98
  99         if [ "${TORAM}" ]
 100         then
 101                 live_dest="ram"
 102         elif [ "${TODISK}" ]
 103         then
 104                 live_dest="${TODISK}"
 105         fi
 106
 107         if [ "${live_dest}" ]
 108         then
 109                 log_begin_msg "Copying live media to ${live_dest}"
 110                 copy_live_to "${livefs_root}" "${live_dest}"
 111                 log_end_msg
 112         fi
 113
 114         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 115         # because the mountpoint is left behind in /proc/mounts, so let's get
 116         # rid of it when running from RAM
 117         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
 118         then
 119                 losetup -d /dev/loop0
 120
 121                 if is_mountpoint /live/fromiso
 122                 then
 123                         umount /live/fromiso
 124                         rmdir --ignore-fail-on-non-empty /live/fromiso \
 125                                 >/dev/null 2>&1 || true
 126                 fi
 127         fi
 128
 129         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
 130         then
 131                 setup_unionfs "${livefs_root}" "${rootmnt}"
 132         else
 133                 mac="$(get_mac)"
 134                 mac="$(echo ${mac} | sed 's/-//g')"
 135                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
 136         fi
 137
 138         # At this point /root should contain the final root filesystem.
 139         # Move all mountpoints below /live into /root/lib/live/mount.
 140         # This has to be done after mounting the root filesystem to /
 141         # otherwise these mount points won't be accessible from the running system.
 142         for _MOUNT in $(cat /proc/mounts | cut -f 2 -d " " | grep -e "^/live/")
 143         do
 144                 local newmount
 145                 newmount="${rootmnt}/lib/live/mount/${_MOUNT#/live/}"
 146                 mkdir -p "${newmount}"
 147                 mount -o move "${_MOUNT}" "${newmount}" > /dev/null 2>&1 || \
 148                 mount -o bind "${_MOUNT}" "${newmount}" > /dev/null || \
 149                 log_warning_msg "W: failed to move or bindmount ${_MOUNT} to ${newmount}"
 150         done
 151
 152         if [ -n "${ROOT_PID}" ]
 153         then
 154                 echo "${ROOT_PID}" > "${rootmnt}"/lib/live/root.pid
 155         fi
 156
 157         log_end_msg
 158
 159         # unionfs-fuse needs /dev to be bind-mounted for the duration of
 160         # live-bottom; udev's init script will take care of things after that
 161         case "${UNIONTYPE}" in
 162                 unionfs-fuse)
 163                         mount -n -o bind /dev "${rootmnt}/dev"
 164                         ;;
 165         esac
 166
 167
 168         # aufs2 in kernel versions around 2.6.33 has a regression:
 169         # directories can't be accessed when read for the first the time,
 170         # causing a failure for example when accessing /var/lib/fai
 171         # when booting FAI, this simple workaround solves it
 172         ls /root/* >/dev/null 2>&1
 173
 174         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 175         # because the mountpoint is left behind in /proc/mounts, so let's get
 176         # rid of it when running from RAM
 177         if [ -n "$FINDISO" ] && [ "${TORAM}" ]
 178         then
 179                 losetup -d /dev/loop0
 180
 181                 if is_mountpoint /root/lib/live/mount/findiso
 182                 then
 183                         umount /root/lib/live/mount/findiso
 184                         rmdir --ignore-fail-on-non-empty /root/lib/live/mount/findiso \
 185                                 >/dev/null 2>&1 || true
 186                 fi
 187         fi
 188
 189         if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
 190         then
 191                 log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
 192                 cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
 193                 log_end_msg
 194         fi
 195
 196         if ! [ -d "/lib/live/boot" ]
 197         then
 198                 panic "A wrong rootfs was mounted."
 199         fi
 200
 201         Fstab
 202         Netbase
 203
 204         Swap
 205
 206         case "${UNIONFS}" in
 207                 unionfs-fuse)
 208                         umount "${rootmnt}/dev"
 209                         ;;
 210         esac
 211
 212         exec 1>&6 6>&-
 213         exec 2>&7 7>&-
 214         kill ${tailpid}
 215         [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && cp boot.log "${rootmnt}/var/log/live" 2>/dev/null
 216 }