components/9990-main.sh

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