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