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