package/base/mkinitrd/mkinitrd.sh

   1 #!/bin/bash
   2 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   3 # T2 SDE: package/*/mkinitrd/mkinitrd.sh
   4 # Copyright (C) 2005 - 2021 The T2 SDE Project
   5 # Copyright (C) 2005 - 2021 René Rebe <rene@exactcode.de>
   6 #
   7 # This Copyright note is generated by scripts/Create-CopyPatch,
   8 # more information can be found in the files COPYING and README.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License version 2.
  12 # --- T2-COPYRIGHT-NOTE-END ---
  13
  14 set -e
  15
  16 map=`mktemp`
  17 firmware=
  18 minimal=
  19 network=1
  20 archprefix=
  21 outfile=
  22
  23 declare -A vitalmods
  24 vitalmods[qla1280.ko]=1 # Sgi Octane
  25 vitalmods[qla2xxx.ko]=1 # Sun Blade
  26 vitalmods[tg3.ko]=1 # Sun Fire
  27 vitalmods[xhci-pci.ko]=1 # probably every modern machine
  28
  29 filter="-e ext4 -e isofs -e pata_legacy -e sym53c8xx -e s[rd]_mod"
  30
  31 declare -A added
  32
  33 if [ $UID != 0 ]; then
  34         echo "Non root - exiting ..."
  35         exit 1
  36 fi
  37
  38 while [ "$1" ]; do
  39   case $1 in
  40         [0-9]*) kernelver="$1" ;;
  41         -R) root="$2" ; shift ;;
  42         -a) archprefix="$2" ; shift ;;
  43         --firmware) firmware=1 ;;
  44         --minimal) minimal=1 ;;
  45         --network) network=0 ;;
  46         -e) filter="$filter $2" ; shift ;;
  47         -o) outfile="$2" ; shift ;;
  48         *) echo "Usage: mkinitrd [ --firmware ] [ --minimal ] [ --network ] [ -R root ] [ -e filter ] [ -o filename ] [ kernelver ]"
  49            exit 1 ;;
  50   esac
  51   shift
  52 done
  53
  54 [ "$minimal" != 1 ] && filter="$filter -e reiserfs -e btrfs -e /jfs -e /xfs
  55 -e /udf -e /unionfs -e ntfs -e /fat -e /hfs -e floppy
  56 -e /ata/ -e /scsi/ -e /fusion/ -e /sdhci/ -e nvme/host -e /mmc/ -e ps3fb -e ps3disk
  57 -e dm-mod -e dm-raid -e md/raid -e dm/mirror -e dm/linear -e dm-crypt -e dm-cache
  58 -e /aes -e /sha -e /blake -e /cbc
  59 -e cciss -e ips -e virtio -e nls_cp437 -e nls_iso8859-1 -e nls_utf8
  60 -e /.hci -e usb-common -e usb-storage -e sbp2 -e uas
  61 -e usbhid -e i2c-hid -e hid-generic -e hid-multitouch
  62 -e hid-apple -e hid-microsoft -e hyperv-keyboard"
  63
  64 [ "$network" = 1 ] && filter="$filter -e /ipv4/ -e '/ipv6\.' -e ethernet -e nfsv4"
  65
  66 [ "$kernelver" ] || kernelver=`uname -r`
  67 [ "$moddir" ] || moddir="$root/lib/modules/$kernelver"
  68
  69 modinfo="${archprefix}modinfo -b $moddir -k $kernelver"
  70 depmod=${archprefix}depmod
  71
  72 echo "Kernel: $kernelver, module dir: $moddir"
  73
  74 if [ ! -d $moddir ]; then
  75         echo "Warning: $moddir does not exist!"
  76         moddir=""
  77 fi
  78
  79 sysmap=""
  80 [ -f "$root/boot/System.map-$kernelver" ] && sysmap="$root/boot/System.map-$kernelver"
  81
  82 if [ -z "$sysmap" ]; then
  83         echo "System.map-$kernelver not found!"
  84         exit 2
  85 fi
  86
  87 echo "System.map: $sysmap"
  88
  89 # check needed tools
  90 for x in cpio gzip; do
  91         if ! type -p $x >/dev/null; then
  92                 echo "$x not found!"
  93                 exit 2
  94         fi
  95 done
  96
  97 tmpdir="$map.d"
  98 cd ${tmpdir%/*}
  99 mkdir ${tmpdir##*/}
 100 cd $tmpdir
 101
 102 # create basic structure
 103 #
 104 echo "Create dirtree ..."
 105
 106 mkdir -p {dev,bin,sbin,proc,sys,lib/modules,lib/udev,etc/hotplug.d/default}
 107 mknod dev/null c 1 3
 108 mknod dev/zero c 1 5
 109 mknod dev/tty c 5 0
 110 mknod dev/console c 5 1
 111
 112 # copy the basic / rootfs kernel modules
 113 #
 114
 115 if [ "$moddir" ]; then
 116  echo "Copying kernel modules ..."
 117  (
 118   add_depend() {
 119      local skipped=
 120      local x="$1"
 121
 122      # expand to full name if it was a depend
 123      [ $x = ${x##*/} ] && x=`sed -n "/\/$x\.ko.*/{p; q}" $map`
 124
 125      if [ "${added["$x"]}" != 1 ]; then
 126         added["$x"]=1
 127
 128         local module=${x##*/}
 129         echo -n "$module "
 130
 131         # strip $root prefix
 132         xt=${x##$root}
 133
 134         # does it need firmware?
 135         fw="`$modinfo -F firmware $x`"
 136         if [ "$fw" ]; then
 137              echo -e -n "\nWarning: $module needs firmware"
 138              if [ "$firmware" -o "${vitalmods[$module]}" ]; then
 139                 for fn in $fw; do
 140                     local fn="/lib/firmware/$fn"
 141                     local dir="./${fn%/*}"
 142                     if [ ! -e "$root$fn" ]; then
 143                         if [ "${vitalmods[$module]}" ]; then
 144                             echo ", not found, vital, including anyway"
 145                         else
 146                             echo ", not found, skipped"
 147                             skipped=1
 148                         fi
 149                     else
 150                         mkdir -p "$dir"
 151                         echo -n ", $fn"
 152                         cp -af "$root$fn" "$dir/"
 153                         # TODO: copy source if symlink
 154                         [ -f "$tmpdir$fn" ] && zstd -19 --rm -f --quiet "$tmpdir$fn"
 155                     fi
 156                 done
 157                 echo
 158              else
 159                 echo ", skipped"
 160                 skipped=1
 161              fi
 162         fi
 163
 164         if [ -z "$skipped" ]; then
 165             mkdir -p `dirname ./$xt` # TODO: use builtin?
 166             cp -af $x $tmpdir$xt
 167             zstd -19 --rm -f --quiet $tmpdir$xt
 168
 169             # add it's deps, too
 170             for fn in `$modinfo -F depends $x | sed 's/,/ /g'`; do
 171                 add_depend "$fn"
 172             done
 173         fi
 174      else
 175         #echo "already there"
 176         :
 177      fi
 178   }
 179
 180   find $moddir/kernel -type f > $map
 181   grep -v -e /wireless/ -e netfilter $map | grep $filter |
 182   while read fn; do
 183         add_depend "$fn"
 184   done
 185  ) | fold -s; echo
 186
 187  # generate map files
 188  #
 189  mkdir -p lib/modules/$kernelver
 190  cp -avf $moddir/modules.{order*,builtin*} lib/modules/$kernelver/
 191  $depmod -ae -b $tmpdir -F $sysmap $kernelver
 192  # only keep the .bin-ary files
 193  rm $tmpdir/lib/modules/$kernelver/modules.{alias,dep,symbols,builtin,order}
 194 fi
 195
 196 echo "Injecting programs and configuration ..."
 197
 198 # copying config
 199 #
 200 cp -ar $root/etc/{group,udev} $tmpdir/etc/
 201
 202 [ -e $root/lib/udev/rules.d ] && cp -ar $root/lib/udev/rules.d $tmpdir/lib/udev/
 203 [ -e $root/etc/mdadm.conf ] && cp -ar $root/etc/mdadm.conf $tmpdir/etc/
 204 cp -ar $root/etc/modprobe.* $root/etc/ld-* $tmpdir/etc/ 2>/dev/null || true
 205
 206 # in theory all, but fat and not all always needed ...
 207 cp -a $root/lib/udev/{ata,scsi,cdrom}_id $tmpdir/lib/udev/
 208
 209 elf_magic () {
 210         readelf -h "$1" | grep 'Machine\|Class'
 211 }
 212
 213 # copy dynamic libraries, and optional plugins, if any.
 214 #
 215 if [ "$minimal" = 1 ]; then
 216         extralibs="`ls $root/lib*/{libdl,libncurses.so}* 2>/dev/null || true`"
 217 else
 218         # glibc only
 219         extralibs="`ls $root/{lib*/libnss_files,usr/lib*/libgcc_s}.so* 2>/dev/null || true`"
 220 fi
 221
 222 copy_dyn_libs () {
 223         local magic
 224         # we can not use ldd(1) as it loads the object, which does not work on cross builds
 225         for lib in $extralibs `readelf -de $1 |
 226                 sed -n -e 's/.*Shared library.*\[\([^]\]*\)\]/\1/p' \
 227                        -e 's/.*Requesting program interpreter: \([^]]*\)\]/\1/p'`
 228         do
 229                 # remove $root prefix from extra libs
 230                 [ "$lib" != "${lib#$root/}" ] && lib="${lib##*/}"
 231
 232                 if [ -z "$magic" ]; then
 233                         magic="$(elf_magic $1)"
 234                         [[ $1 = *bin/* ]] && echo "Warning: $1 is dynamically linked!"
 235                 fi
 236                 for libdir in $root/lib*/ $root/usr/lib*/ "$root"; do
 237                         if [ -e $libdir$lib ]; then
 238                             [ ! -L $libdir$lib -a "$magic" != "$(elf_magic $libdir$lib)" ] && continue
 239                             xlibdir=${libdir#$root}
 240                             echo "      ${1#$root} NEEDS $xlibdir$lib"
 241
 242                             if [ "${added["$xlibdir$lib"]}" != 1 ]; then
 243                                 added["$xlibdir$lib"]=1
 244
 245                                 mkdir -p ./$xlibdir
 246                                 while local x=`readlink $libdir$lib`; [ "$x" ]; do
 247                                         echo "  $xlibdir$lib SYMLINKS to $x"
 248                                         local y=$tmpdir$xlibdir$lib
 249                                         mkdir -p ${y%/*}
 250                                         ln -sfv $x $tmpdir$xlibdir$lib
 251                                         if [ "${x#/}" == "$x" ]; then # relative?
 252                                                 # directory to prepend?
 253                                                 [ ${lib%/*} != "$lib" ] && x="${lib%/*}/$x"
 254                                         fi
 255                                         lib="$x"
 256                                 done
 257                                 local y=$tmpdir$xlibdir$lib
 258                                 mkdir -p ${y%/*}
 259                                 cp -af $libdir$lib $tmpdir$xlibdir$lib
 260
 261                                 copy_dyn_libs $libdir$lib
 262                             fi
 263                         fi
 264                 done
 265         done
 266 }
 267
 268 # setup programs
 269 #
 270 for x in $root/sbin/{udevd,udevadm,kmod,modprobe,insmod,blkid} \
 271          $root/usr/sbin/disktype
 272 do
 273         cp -av $x $tmpdir/sbin/
 274         copy_dyn_libs $x
 275 done
 276
 277 # setup optional programs
 278 #
 279 [ "$minimal" != 1 ] &&
 280 for x in $root/sbin/{vgchange,lvchange,lvm,mdadm} \
 281          $root/usr/sbin/{cryptsetup,ipconfig} $root/usr/embutils/{dmesg,swapon}
 282 do
 283   if [ ! -e $x ]; then
 284         echo "Warning: Skipped optional file ${x#$root}!"
 285   else
 286         cp -a $x $tmpdir/sbin/
 287         copy_dyn_libs $x
 288   fi
 289 done
 290
 291 # copy a small shell
 292 for sh in $root/bin/{pdksh,bash}; do
 293     if [ -e "$sh" ]; then
 294         cp $sh $tmpdir/bin/${sh##*/}
 295         ln -sf ${sh##*/} $tmpdir/bin/sh
 296         break
 297     fi
 298 done
 299
 300 # static, tiny embutils and friends
 301 #
 302 cp $root/usr/embutils/{mount,umount,rm,mv,mkdir,ln,ls,switch_root,chroot,sleep,losetup,chmod,cat,sed,mknod} \
 303    $tmpdir/bin/
 304 ln -s mv $tmpdir/bin/cp
 305
 306 cp $root/sbin/initrdinit $tmpdir/init
 307 chmod +x $tmpdir/init
 308
 309 # Custom ACPI DSDT table
 310 if test -f "$root/boot/DSDT.aml"; then
 311         echo "Adding local DSDT file: $dsdt"
 312         cp $root/boot/DSDT.aml $tmpdir/DSDT.aml
 313 fi
 314
 315 # create the cpio image
 316 #
 317 echo "Archiving ..."
 318 ( cd $tmpdir
 319   find . | cpio -o -H newc
 320 ) | zstd -19 -T0 > "${outfile:-$root/boot/initrd-$kernelver}"
 321 rm -rf $tmpdir $map