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:-$(cat /proc/cmdline)}"
  20         Cmdline_old
  21
  22         Debug
  23
  24         Read_only
  25
  26         Select_eth_device
  27
  28         if [ -e /conf/param.conf ]
  29         then
  30                 . /conf/param.conf
  31         fi
  32
  33         # Needed here too because some things (*cough* udev *cough*)
  34         # changes the timeout
  35
  36         if [ -n "${NETBOOT}" ] || [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ]
  37         then
  38                 if do_netmount
  39                 then
  40                         livefs_root="${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=${ROOT}
  52                 else
  53                         if [ -x /usr/bin/memdiskfind ]
  54                         then
  55                                 if ! dd if=/dev/mem of=/dev/zero bs=1 count=1 >/dev/null 2>&1
  56                                 then
  57                                         log_begin_msg "access to /dev/mem is restriced, skipping memdiskfind"
  58                                         log_end_msg
  59                                 else
  60                                         if MEMDISK=$(/usr/bin/memdiskfind)
  61                                         then
  62                                                 # We found a memdisk, set up phram
  63                                                 # Sometimes "modprobe phram" can not successfully create /dev/mtd0.
  64                                                 # Have to try several times.
  65                                                 max_try=20
  66                                                 while [ ! -c /dev/mtd0 ] && [ "$max_try" -gt 0 ]; do
  67                                                   modprobe phram "phram=memdisk,${MEMDISK}"
  68                                                   sleep 0.2
  69                                                   if [ -c /dev/mtd0 ]; then
  70                                                         break
  71                                                   else
  72                                                         rmmod phram
  73                                                   fi
  74                                                   max_try=$((max_try - 1))
  75                                                 done
  76
  77                                                 # Load mtdblock, the memdisk will be /dev/mtdblock0
  78                                                 modprobe mtdblock
  79                                         fi
  80                                 fi
  81                         fi
  82
  83                         # Scan local devices for the image
  84                         i=0
  85                         while [ "$i" -lt 60 ]
  86                         do
  87                                 livefs_root=$(find_livefs ${i})
  88
  89                                 if [ -n "${livefs_root}" ]
  90                                 then
  91                                         break
  92                                 fi
  93
  94                                 sleep 1
  95                                 i=$((i + 1))
  96                         done
  97                 fi
  98         fi
  99
 100         if [ -z "${livefs_root}" ]
 101         then
 102                 panic "Unable to find a medium containing a live file system"
 103         fi
 104
 105         Verify_checksums "${livefs_root}"
 106
 107         if [ "${TORAM}" ]
 108         then
 109                 live_dest="ram"
 110         elif [ "${TODISK}" ]
 111         then
 112                 live_dest="${TODISK}"
 113         fi
 114
 115         if [ "${live_dest}" ]
 116         then
 117                 log_begin_msg "Copying live media to ${live_dest}"
 118                 copy_live_to "${livefs_root}" "${live_dest}"
 119                 log_end_msg
 120         fi
 121
 122         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 123         # because the mountpoint is left behind in /proc/mounts, so let's get
 124         # rid of it when running from RAM
 125         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
 126         then
 127                 losetup -d /dev/loop0
 128
 129                 if is_mountpoint /run/live/fromiso
 130                 then
 131                         umount /run/live/fromiso
 132                         rmdir --ignore-fail-on-non-empty /run/live/fromiso \
 133                                 >/dev/null 2>&1 || true
 134                 fi
 135         fi
 136
 137         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
 138         then
 139                 setup_unionfs "${livefs_root}" "${rootmnt?}"
 140         else
 141                 mac="$(get_mac)"
 142                 mac="$(echo "${mac}" | sed 's/-//g')"
 143                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
 144         fi
 145
 146         if [ -n "${ROOT_PID}" ]
 147         then
 148                 echo "${ROOT_PID}" > "${rootmnt}"/lib/live/root.pid
 149         fi
 150
 151         log_end_msg
 152
 153         # aufs2 in kernel versions around 2.6.33 has a regression:
 154         # directories can't be accessed when read for the first the time,
 155         # causing a failure for example when accessing /var/lib/fai
 156         # when booting FAI, this simple workaround solves it
 157         ls /root/* >/dev/null 2>&1
 158
 159         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 160         # because the mountpoint is left behind in /proc/mounts, so let's get
 161         # rid of it when running from RAM
 162         if [ -n "$FINDISO" ] && [ "${TORAM}" ]
 163         then
 164                 losetup -d /dev/loop0
 165
 166                 if is_mountpoint /run/live/findiso
 167                 then
 168                         umount /run/live/findiso
 169                         rmdir --ignore-fail-on-non-empty /run/live/findiso \
 170                                 >/dev/null 2>&1 || true
 171                 fi
 172         fi
 173
 174         if [ -f /etc/hostname ] && ! grep -E -q -v '^[[:space:]]*(#|$)' "${rootmnt}/etc/hostname"
 175         then
 176                 log_begin_msg "Copying /etc/hostname to ${rootmnt}/etc/hostname"
 177                 cp -v /etc/hostname "${rootmnt}/etc/hostname"
 178                 log_end_msg
 179         fi
 180
 181         if [ -f /etc/hosts ] && ! grep -E -q -v '^[[:space:]]*(#|$|(127.0.0.1|::1|ff02::[12])[[:space:]])' "${rootmnt}/etc/hosts"
 182         then
 183                 log_begin_msg "Copying /etc/hosts to ${rootmnt}/etc/hosts"
 184                 cp -v /etc/hosts "${rootmnt}/etc/hosts"
 185                 log_end_msg
 186         fi
 187
 188         if [ -L /root/etc/resolv.conf ] ; then
 189                 # assume we have resolvconf
 190                 DNSFILE="${rootmnt}/etc/resolvconf/resolv.conf.d/base"
 191         else
 192                 DNSFILE="${rootmnt}/etc/resolv.conf"
 193         fi
 194         if [ -f /etc/resolv.conf ] && ! grep -E -q -v '^[[:space:]]*(#|$)' "${DNSFILE}"
 195         then
 196                 log_begin_msg "Copying /etc/resolv.conf to ${DNSFILE}"
 197                 cp -v /etc/resolv.conf "${DNSFILE}"
 198                 log_end_msg
 199         fi
 200
 201         if ! [ -d "/lib/live/boot" ]
 202         then
 203                 panic "A wrong rootfs was mounted."
 204         fi
 205
 206         # avoid breaking existing user scripts that rely on the old path
 207         # this includes code that checks what is mounted on /lib/live/mount/*
 208         # (eg: grep /lib/live /proc/mount)
 209         # XXX: to be removed before the bullseye release
 210         mkdir -p "${rootmnt}/lib/live/mount"
 211         mount --rbind /run/live "${rootmnt}/lib/live/mount"
 212
 213         Fstab
 214
 215         Swap
 216
 217         if grep -q debian_networking /proc/cmdline ; then
 218                 Netbase
 219         else
 220                 Grml_Networking
 221         fi
 222
 223         exec 1>&6 6>&-
 224         exec 2>&7 7>&-
 225         kill ${tailpid}
 226         [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && ( \
 227                                 cp boot.log "${rootmnt}/var/log/live" 2>/dev/null; \
 228                                 cp fsck.log "${rootmnt}/var/log/live" 2>/dev/null )
 229 }