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 [ $? -eq 0 ]
  58                                 then
  59                                         # We found a memdisk, set up phram
  60                                         # Sometimes "modprobe phram" can not successfully create /dev/mtd0.
  61                                         # Have to try several times.
  62                                         max_try=20
  63                                         while [ ! -c /dev/mtd0 -a "$max_try" -gt 0 ]; do
  64                                           modprobe phram phram=memdisk,${MEMDISK}
  65                                           sleep 0.2
  66                                           if [ -c /dev/mtd0 ]; then
  67                                                 break
  68                                           else
  69                                                 rmmod phram
  70                                           fi
  71                                           max_try=$((max_try - 1))
  72                                         done
  73
  74                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
  75                                         modprobe mtdblock
  76                                 fi
  77                         fi
  78
  79                         # Scan local devices for the image
  80                         i=0
  81                         while [ "$i" -lt 60 ]
  82                         do
  83                                 livefs_root=$(find_livefs ${i})
  84
  85                                 if [ -n "${livefs_root}" ]
  86                                 then
  87                                         break
  88                                 fi
  89
  90                                 sleep 1
  91                                 i="$(($i + 1))"
  92                         done
  93                 fi
  94         fi
  95
  96         if [ -z "${livefs_root}" ]
  97         then
  98                 panic "Unable to find a medium containing a live file system"
  99         fi
 100
 101         Verify_checksums "${livefs_root}"
 102
 103         if [ "${TORAM}" ]
 104         then
 105                 live_dest="ram"
 106         elif [ "${TODISK}" ]
 107         then
 108                 live_dest="${TODISK}"
 109         fi
 110
 111         if [ "${live_dest}" ]
 112         then
 113                 log_begin_msg "Copying live media to ${live_dest}"
 114                 copy_live_to "${livefs_root}" "${live_dest}"
 115                 log_end_msg
 116         fi
 117
 118         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 119         # because the mountpoint is left behind in /proc/mounts, so let's get
 120         # rid of it when running from RAM
 121         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
 122         then
 123                 losetup -d /dev/loop0
 124
 125                 if is_mountpoint /run/live/fromiso
 126                 then
 127                         umount /run/live/fromiso
 128                         rmdir --ignore-fail-on-non-empty /run/live/fromiso \
 129                                 >/dev/null 2>&1 || true
 130                 fi
 131         fi
 132
 133         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
 134         then
 135                 setup_unionfs "${livefs_root}" "${rootmnt}"
 136         else
 137                 mac="$(get_mac)"
 138                 mac="$(echo ${mac} | sed 's/-//g')"
 139                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
 140         fi
 141
 142         if [ -n "${ROOT_PID}" ]
 143         then
 144                 echo "${ROOT_PID}" > "${rootmnt}"/lib/live/root.pid
 145         fi
 146
 147         log_end_msg
 148
 149         # aufs2 in kernel versions around 2.6.33 has a regression:
 150         # directories can't be accessed when read for the first the time,
 151         # causing a failure for example when accessing /var/lib/fai
 152         # when booting FAI, this simple workaround solves it
 153         ls /root/* >/dev/null 2>&1
 154
 155         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 156         # because the mountpoint is left behind in /proc/mounts, so let's get
 157         # rid of it when running from RAM
 158         if [ -n "$FINDISO" ] && [ "${TORAM}" ]
 159         then
 160                 losetup -d /dev/loop0
 161
 162                 if is_mountpoint /run/live/findiso
 163                 then
 164                         umount /run/live/findiso
 165                         rmdir --ignore-fail-on-non-empty /run/live/findiso \
 166                                 >/dev/null 2>&1 || true
 167                 fi
 168         fi
 169
 170         if [ -L /root/etc/resolv.conf ] ; then
 171                 # assume we have resolvconf
 172                 DNSFILE="${rootmnt}/etc/resolvconf/resolv.conf.d/base"
 173         else
 174                 DNSFILE="${rootmnt}/etc/resolv.conf"
 175         fi
 176         if [ -f /etc/resolv.conf ] && ! grep -E -q -v '^[[:space:]]*#|^[[:space:]]*$' ${DNSFILE}
 177         then
 178                 log_begin_msg "Copying /etc/resolv.conf to ${DNSFILE}"
 179                 cp -v /etc/resolv.conf ${DNSFILE}
 180                 log_end_msg
 181         fi
 182
 183         if ! [ -d "/lib/live/boot" ]
 184         then
 185                 panic "A wrong rootfs was mounted."
 186         fi
 187
 188         # avoid breaking existing user scripts that rely on the old path
 189         # this includes code that checks what is mounted on /lib/live/mount/*
 190         # (eg: grep /lib/live /proc/mount)
 191         # XXX: to be removed before the bullseye release
 192         mkdir -p ${rootmnt}/lib/live/mount
 193         mount --rbind /run/live ${rootmnt}/lib/live/mount
 194
 195         Fstab
 196         Netbase
 197
 198         Swap
 199
 200         exec 1>&6 6>&-
 201         exec 2>&7 7>&-
 202         kill ${tailpid}
 203         [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && ( \
 204                                 cp boot.log "${rootmnt}/var/log/live" 2>/dev/null; \
 205                                 cp fsck.log "${rootmnt}/var/log/live" 2>/dev/null )
 206 }