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                         # If the live media location is given via command line and access to it
  84                         # involves LVM volumes, the corresponding volumes need to be activated.
  85                         IFS=','
  86                         for dev in $(echo "$LIVE_MEDIA")
  87                         do
  88                                 case "$dev" in
  89                                 /dev/mapper/*)
  90                                         eval $(dmsetup splitname --nameprefixes --noheadings --rows "${dev#/dev/mapper/}")
  91                                         if [ "$DM_VG_NAME" ] && [ "$DM_LV_NAME" ]
  92                                         then
  93                                                 lvm lvchange -aay -y --sysinit --ignoreskippedcluster "$DM_VG_NAME/$DM_LV_NAME"
  94                                         fi
  95                                         ;;
  96                                 /dev/*/*)
  97                                         # Could be /dev/VG/LV; use lvs to check
  98                                         if lvm lvs -- "$dev" >/dev/null 2>&1
  99                                         then
 100                                                 lvm lvchange -aay -y --sysinit --ignoreskippedcluster "$dev"
 101                                         fi
 102                                         ;;
 103                                 esac
 104                         done
 105                         unset IFS
 106
 107                         # Scan local devices for the image
 108                         i=0
 109                         while [ "$i" -lt 60 ]
 110                         do
 111                                 livefs_root=$(find_livefs ${i})
 112
 113                                 if [ -n "${livefs_root}" ]
 114                                 then
 115                                         break
 116                                 fi
 117
 118                                 sleep 1
 119                                 i=$((i + 1))
 120                         done
 121                 fi
 122         fi
 123
 124         if [ -z "${livefs_root}" ]
 125         then
 126                 panic "Unable to find a medium containing a live file system"
 127         fi
 128
 129         Verify_checksums "${livefs_root}"
 130
 131         if [ "${TORAM}" ]
 132         then
 133                 live_dest="ram"
 134         elif [ "${TODISK}" ]
 135         then
 136                 live_dest="${TODISK}"
 137         fi
 138
 139         if [ "${live_dest}" ]
 140         then
 141                 log_begin_msg "Copying live media to ${live_dest}"
 142                 copy_live_to "${livefs_root}" "${live_dest}"
 143                 log_end_msg
 144         fi
 145
 146         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 147         # because the mountpoint is left behind in /proc/mounts, so let's get
 148         # rid of it when running from RAM
 149         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
 150         then
 151                 losetup -d /dev/loop0
 152
 153                 if is_mountpoint /run/live/fromiso
 154                 then
 155                         umount /run/live/fromiso
 156                         rmdir --ignore-fail-on-non-empty /run/live/fromiso \
 157                                 >/dev/null 2>&1 || true
 158                 fi
 159         fi
 160
 161         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
 162         then
 163                 setup_unionfs "${livefs_root}" "${rootmnt?}"
 164         else
 165                 mac="$(get_mac)"
 166                 mac="$(echo "${mac}" | sed 's/-//g')"
 167                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
 168         fi
 169
 170         if [ -n "${ROOT_PID}" ]
 171         then
 172                 echo "${ROOT_PID}" > "${rootmnt}"/lib/live/root.pid
 173         fi
 174
 175         log_end_msg
 176
 177         # aufs2 in kernel versions around 2.6.33 has a regression:
 178         # directories can't be accessed when read for the first the time,
 179         # causing a failure for example when accessing /var/lib/fai
 180         # when booting FAI, this simple workaround solves it
 181         ls /root/* >/dev/null 2>&1
 182
 183         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
 184         # because the mountpoint is left behind in /proc/mounts, so let's get
 185         # rid of it when running from RAM
 186         if [ -n "$FINDISO" ] && [ "${TORAM}" ]
 187         then
 188                 losetup -d /dev/loop0
 189
 190                 if is_mountpoint /run/live/findiso
 191                 then
 192                         umount /run/live/findiso
 193                         rmdir --ignore-fail-on-non-empty /run/live/findiso \
 194                                 >/dev/null 2>&1 || true
 195                 fi
 196         fi
 197
 198         if [ -f /etc/hostname ] && ! grep -E -q -v '^[[:space:]]*(#|$)' "${rootmnt}/etc/hostname"
 199         then
 200                 log_begin_msg "Copying /etc/hostname to ${rootmnt}/etc/hostname"
 201                 cp -v /etc/hostname "${rootmnt}/etc/hostname"
 202                 log_end_msg
 203         fi
 204
 205         if [ -f /etc/hosts ] && ! grep -E -q -v '^[[:space:]]*(#|$|(127.0.0.1|::1|ff02::[12])[[:space:]])' "${rootmnt}/etc/hosts"
 206         then
 207                 log_begin_msg "Copying /etc/hosts to ${rootmnt}/etc/hosts"
 208                 cp -v /etc/hosts "${rootmnt}/etc/hosts"
 209                 log_end_msg
 210         fi
 211
 212         if [ -L /root/etc/resolv.conf ] ; then
 213                 # assume we have resolvconf
 214                 DNSFILE="${rootmnt}/etc/resolvconf/resolv.conf.d/base"
 215         else
 216                 DNSFILE="${rootmnt}/etc/resolv.conf"
 217         fi
 218         if [ -f /etc/resolv.conf ] && ! grep -E -q -v '^[[:space:]]*(#|$)' "${DNSFILE}"
 219         then
 220                 log_begin_msg "Copying /etc/resolv.conf to ${DNSFILE}"
 221                 cp -v /etc/resolv.conf "${DNSFILE}"
 222                 log_end_msg
 223         fi
 224
 225         if ! [ -d "/lib/live/boot" ]
 226         then
 227                 panic "A wrong rootfs was mounted."
 228         fi
 229
 230         # avoid breaking existing user scripts that rely on the old path
 231         # this includes code that checks what is mounted on /lib/live/mount/*
 232         # (eg: grep /lib/live /proc/mount)
 233         # XXX: to be removed before the bullseye release
 234         mkdir -p "${rootmnt}/lib/live/mount"
 235         mount --rbind /run/live "${rootmnt}/lib/live/mount"
 236
 237         Fstab
 238
 239         Swap
 240
 241         if grep -q debian_networking /proc/cmdline ; then
 242                 Netbase
 243         else
 244                 Grml_Networking
 245         fi
 246
 247         exec 1>&6 6>&-
 248         exec 2>&7 7>&-
 249         kill ${tailpid}
 250         [ -w "${rootmnt}/var/log/" ] && mkdir -p "${rootmnt}/var/log/live" && ( \
 251                                 cp boot.log "${rootmnt}/var/log/live" 2>/dev/null; \
 252                                 cp fsck.log "${rootmnt}/var/log/live" 2>/dev/null )
 253 }