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