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 "${LIVE_DEBUG}" in
  26                 true)
  27                         set -x
  28                         ;;
  29         esac
  30
  31         case "${LIVE_READ_ONLY}" in
  32                 true)
  33                         Read_only
  34                         ;;
  35         esac
  36
  37         Select_eth_device
  38
  39         # Needed here too because some things (*cough* udev *cough*)
  40         # changes the timeout
  41
  42         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
  43         then
  44                 if do_netmount
  45                 then
  46                         livefs_root="${mountpoint}"
  47                 else
  48                         panic "Unable to find a live file system on the network"
  49                 fi
  50         else
  51                 if [ -n "${ISCSI_PORTAL}" ]
  52                 then
  53                         do_iscsi && livefs_root="${mountpoint}"
  54                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
  55                 then
  56                         # Do a local boot from hd
  57                         livefs_root=${ROOT}
  58                 else
  59                         if [ -x /usr/bin/memdiskfind ]
  60                         then
  61                                 MEMDISK=$(/usr/bin/memdiskfind)
  62
  63                                 if [ $? -eq 0 ]
  64                                 then
  65                                         # We found a memdisk, set up phram
  66                                         modprobe phram phram=memdisk,${MEMDISK}
  67
  68                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
  69                                         modprobe mtdblock
  70                                 fi
  71                         fi
  72
  73                         # Scan local devices for the image
  74                         i=0
  75                         while [ "$i" -lt 60 ]
  76                         do
  77                                 livefs_root=$(find_livefs ${i})
  78
  79                                 if [ -n "${livefs_root}" ]
  80                                 then
  81                                         break
  82                                 fi
  83
  84                                 sleep 1
  85                                 i="$(($i + 1))"
  86                         done
  87                 fi
  88         fi
  89
  90         if [ -z "${livefs_root}" ]
  91         then
  92                 panic "Unable to find a medium containing a live file system"
  93         fi
  94
  95         case "${LIVE_VERIFY_CHECKSUMS}" in
  96                 true)
  97                         Verify_checksums "${livefs_root}"
  98                         ;;
  99         esac
 100
 101         if [ "${TORAM}" ]
 102         then
 103                 live_dest="ram"
 104         elif [ "${TODISK}" ]
 105         then
 106                 live_dest="${TODISK}"
 107         fi
 108
 109         if [ "${live_dest}" ]
 110         then
 111                 log_begin_msg "Copying live media to ${live_dest}"
 112                 copy_live_to "${livefs_root}" "${live_dest}"
 113                 log_end_msg
 114         fi
 115
 116         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 117         # because the mountpoint is left behind in /proc/mounts, so let's get
 118         # rid of it when running from RAM
 119         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
 120         then
 121                 losetup -d /dev/loop0
 122
 123                 if is_mountpoint /live/fromiso
 124                 then
 125                         umount /live/fromiso
 126                         rmdir --ignore-fail-on-non-empty /live/fromiso \
 127                                 >/dev/null 2>&1 || true
 128                 fi
 129         fi
 130
 131         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
 132         then
 133                 setup_unionfs "${livefs_root}" "${rootmnt}"
 134         else
 135                 mac="$(get_mac)"
 136                 mac="$(echo ${mac} | sed 's/-//g')"
 137                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
 138         fi
 139
 140
 141         if [ -n "${ROOT_PID}" ]
 142         then
 143                 echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
 144         fi
 145
 146         log_end_msg
 147
 148         # unionfs-fuse needs /dev to be bind-mounted for the duration of
 149         # live-bottom; udev's init script will take care of things after that
 150         case "${UNIONTYPE}" in
 151                 unionfs-fuse)
 152                         mount -n -o bind /dev "${rootmnt}/dev"
 153                         ;;
 154         esac
 155
 156         # Move to the new root filesystem so that programs there can get at it.
 157         if [ ! -d /root/live/image ]
 158         then
 159                 mkdir -p /root/live/image
 160                 mount --move /live/image /root/live/image
 161         fi
 162
 163         # aufs2 in kernel versions around 2.6.33 has a regression:
 164         # directories can't be accessed when read for the first the time,
 165         # causing a failure for example when accessing /var/lib/fai
 166         # when booting FAI, this simple workaround solves it
 167         ls /root/* >/dev/null 2>&1
 168
 169         # Move findiso directory to the new root filesystem so that programs there can get at it.
 170         if [ -d /live/findiso ] && [ ! -d /root/live/findiso ]
 171         then
 172                 mkdir -p /root/live/findiso
 173                 mount -n --move /live/findiso /root/live/findiso
 174         fi
 175
 176         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 177         # because the mountpoint is left behind in /proc/mounts, so let's get
 178         # rid of it when running from RAM
 179         if [ -n "$FINDISO" ] && [ "${TORAM}" ]
 180         then
 181                 losetup -d /dev/loop0
 182
 183                 if is_mountpoint /root/live/findiso
 184                 then
 185                         umount /root/live/findiso
 186                         rmdir --ignore-fail-on-non-empty /root/live/findiso \
 187                                 >/dev/null 2>&1 || true
 188                 fi
 189         fi
 190
 191         if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
 192         then
 193                 log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
 194                 cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
 195                 log_end_msg
 196         fi
 197
 198         if ! [ -d "/lib/live/boot" ]
 199         then
 200                 panic "A wrong rootfs was mounted."
 201         fi
 202
 203         Fstab
 204         Netbase
 205
 206         case "${LIVE_SWAPON}" in
 207                 true)
 208                         Swapon
 209                         ;;
 210         esac
 211
 212         case "${UNIONFS}" in
 213                 unionfs-fuse)
 214                         umount "${rootmnt}/dev"
 215                         ;;
 216         esac
 217
 218         exec 1>&6 6>&-
 219         exec 2>&7 7>&-
 220         kill ${tailpid}
 221         [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && cp boot.log "${rootmnt}/var/log/live" 2>/dev/null
 222 }