copy-builtin

   1 #!/bin/bash
   2
   3 set -e
   4
   5 usage()
   6 {
   7         echo "usage: $0 <kernel source tree>" >&2
   8         exit 1
   9 }
  10
  11 [ "$#" -eq 1 ] || usage
  12 KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
  13
  14 MODULES=()
  15 for MODULE_DIR in module/*
  16 do
  17         [ -d "$MODULE_DIR" ] || continue
  18         MODULES+=("${MODULE_DIR##*/}")
  19 done
  20
  21 if ! [ -e 'zfs_config.h' ]
  22 then
  23         echo >&2
  24         echo "    $0: you did not run configure, or you're not in the ZFS source directory." >&2
  25         echo "    $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
  26         echo >&2
  27         exit 1
  28 fi
  29
  30 make clean || true
  31
  32 rm -rf "$KERNEL_DIR/include/zfs" "$KERNEL_DIR/fs/zfs"
  33 cp --recursive include "$KERNEL_DIR/include/zfs"
  34 cp --recursive module "$KERNEL_DIR/fs/zfs"
  35 cp zfs_config.h "$KERNEL_DIR/"
  36
  37 adjust_obj_paths()
  38 {
  39         local FILE="$1"
  40         local LINE OBJPATH
  41
  42         while IFS='' read -r LINE
  43         do
  44                 OBJPATH="${LINE#\$(MODULE)-objs += }"
  45                 if [ "$OBJPATH" = "$LINE" ]
  46                 then
  47                         echo "$LINE"
  48                 else
  49                         echo "\$(MODULE)-objs += ${OBJPATH##*/}"
  50                 fi
  51         done < "$FILE" > "$FILE.new"
  52         mv "$FILE.new" "$FILE"
  53 }
  54
  55 for MODULE in "${MODULES[@]}"
  56 do
  57         adjust_obj_paths "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
  58 done
  59
  60 cat > "$KERNEL_DIR/fs/zfs/Kconfig" <<"EOF"
  61 config ZFS
  62         tristate "ZFS filesystem support"
  63         depends on SPL
  64         depends on EFI_PARTITION
  65         select ZLIB_INFLATE
  66         select ZLIB_DEFLATE
  67         help
  68           This is the ZFS filesystem from the ZFS On Linux project.
  69
  70           See http://zfsonlinux.org/
  71
  72           To compile this file system support as a module, choose M here.
  73
  74           If unsure, say N.
  75 EOF
  76
  77 {
  78         cat <<-"EOF"
  79         ZFS_MODULE_CFLAGS  = -I$(srctree)/include/zfs -I$(srctree)/include/spl
  80         ZFS_MODULE_CFLAGS += -include $(srctree)/spl_config.h -include $(srctree)/zfs_config.h
  81         export ZFS_MODULE_CFLAGS
  82
  83         obj-$(CONFIG_ZFS) :=
  84         EOF
  85
  86         for MODULE in "${MODULES[@]}"
  87         do
  88                 echo 'obj-$(CONFIG_ZFS) += ' "$MODULE/"
  89         done
  90 } > "$KERNEL_DIR/fs/zfs/Kbuild"
  91
  92 add_after()
  93 {
  94         local FILE="$1"
  95         local MARKER="$2"
  96         local NEW="$3"
  97         local LINE
  98
  99         while IFS='' read -r LINE
 100         do
 101                 echo "$LINE"
 102
 103                 if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
 104                 then
 105                         echo "$NEW"
 106                         MARKER=''
 107                         if IFS='' read -r LINE
 108                         then
 109                                 [ "$LINE" != "$NEW" ] && echo "$LINE"
 110                         fi
 111                 fi
 112         done < "$FILE" > "$FILE.new"
 113
 114         mv "$FILE.new" "$FILE"
 115 }
 116
 117 add_after "$KERNEL_DIR/fs/Kconfig" 'if BLOCK' 'source "fs/zfs/Kconfig"'
 118 add_after "$KERNEL_DIR/fs/Makefile" 'endif' 'obj-$(CONFIG_ZFS) += zfs/'
 119
 120 echo >&2
 121 echo "    $0: done." >&2
 122 echo "    $0: now you can build the kernel with ZFS support." >&2
 123 echo "    $0: make sure you enable ZFS support (CONFIG_ZFS) before building." >&2
 124 echo >&2