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 'spl_config.h' ]
  22 then
  23         echo >&2
  24         echo "    $0: you did not run configure, or you're not in the SPL 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 "$KERNEL_DIR/include/spl" "$KERNEL_DIR/spl"
  33 cp --recursive include "$KERNEL_DIR/include/spl"
  34 cp --recursive module "$KERNEL_DIR/spl"
  35 cp spl_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 "$KERNEL_DIR/spl/$MODULE/Makefile"
  58 done
  59
  60 cat > "$KERNEL_DIR/spl/Kconfig" <<"EOF"
  61 config SPL
  62         tristate "Solaris Porting Layer (SPL)"
  63         help
  64           This is the SPL library from the ZFS On Linux project.
  65
  66           See http://zfsonlinux.org/
  67
  68           To compile this library as a module, choose M here.
  69
  70           If unsure, say N.
  71 EOF
  72
  73 {
  74         cat <<-"EOF"
  75         SPL_MODULE_CFLAGS  = -I$(srctree)/include/spl
  76         SPL_MODULE_CFLAGS += -include $(srctree)/spl_config.h
  77         export SPL_MODULE_CFLAGS
  78
  79         obj-$(CONFIG_SPL) :=
  80         EOF
  81
  82         for MODULE in "${MODULES[@]}"
  83         do
  84                 echo 'obj-$(CONFIG_SPL) += ' "$MODULE/"
  85         done
  86 } > "$KERNEL_DIR/spl/Kbuild"
  87
  88 add_after()
  89 {
  90         local FILE="$1"
  91         local MARKER="$2"
  92         local NEW="$3"
  93         local LINE
  94
  95         while IFS='' read -r LINE
  96         do
  97                 echo "$LINE"
  98
  99                 if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
 100                 then
 101                         echo "$NEW"
 102                         MARKER=''
 103                         if IFS='' read -r LINE
 104                         then
 105                                 [ "$LINE" != "$NEW" ] && echo "$LINE"
 106                         fi
 107                 fi
 108         done < "$FILE" > "$FILE.new"
 109
 110         mv "$FILE.new" "$FILE"
 111 }
 112
 113 add_after "$KERNEL_DIR/Kconfig" 'source "arch/$SRCARCH/Kconfig"' 'source "spl/Kconfig"'
 114 # We must take care to build SPL before ZFS, else module initialization order will be wrong
 115 sed -i 's#kernel/ mm/ fs/#kernel/ mm/ spl/ fs/#' "$KERNEL_DIR/Makefile"
 116
 117 echo >&2
 118 echo "    $0: done." >&2
 119 echo "    $0: now you can build the kernel with SPL support." >&2
 120 echo "    $0: make sure you enable SPL support (CONFIG_SPL) before building." >&2
 121 echo >&2
 122