copy-builtin

   1 #!/usr/bin/env 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 "$1")"
  13
  14 MODULES=()
  15
  16 # When integrated in to a monolithic kernel the spl module must appear
  17 # first.  This ensures its module initialization function is run before
  18 # any of the other module initialization functions which depend on it.
  19 MODULES+="spl"
  20
  21 for MODULE_DIR in module/* module/os/linux/*
  22 do
  23         [ -d "$MODULE_DIR" ] || continue
  24         [ "spl" = "${MODULE_DIR##*/}" ] && continue
  25         [ "os" = "${MODULE_DIR#*/}" ] && continue
  26         MODULES+=("${MODULE_DIR#*/}")
  27 done
  28
  29 if ! [ -e 'zfs_config.h' ]
  30 then
  31         echo >&2
  32         echo "    $0: you did not run configure, or you're not in the ZFS source directory." >&2
  33         echo "    $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
  34         echo >&2
  35         exit 1
  36 fi
  37
  38 make clean || true
  39 scripts/make_gitrev.sh || true
  40
  41 rm -rf "$KERNEL_DIR/include/zfs" "$KERNEL_DIR/fs/zfs"
  42 cp --recursive include "$KERNEL_DIR/include/zfs"
  43 cp --recursive module "$KERNEL_DIR/fs/zfs"
  44 cp zfs_config.h "$KERNEL_DIR/include/zfs/"
  45
  46 for MODULE in "${MODULES[@]}"
  47 do
  48         sed -i.bak '/obj =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
  49         sed -i.bak '/src =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
  50 done
  51
  52 cat > "$KERNEL_DIR/fs/zfs/Kconfig" <<"EOF"
  53 config ZFS
  54         tristate "ZFS filesystem support"
  55         depends on EFI_PARTITION
  56         select ZLIB_INFLATE
  57         select ZLIB_DEFLATE
  58         help
  59           This is the ZFS filesystem from the ZFS On Linux project.
  60
  61           See https://zfsonlinux.org/
  62
  63           To compile this file system support as a module, choose M here.
  64
  65           If unsure, say N.
  66 EOF
  67
  68 {
  69         cat <<-"EOF"
  70         ZFS_MODULE_CFLAGS  = -I$(srctree)/include/zfs
  71         ZFS_MODULE_CFLAGS += -I$(srctree)/include/zfs/os/linux/spl
  72         ZFS_MODULE_CFLAGS += -I$(srctree)/include/zfs/os/linux/zfs
  73         ZFS_MODULE_CFLAGS += -I$(srctree)/include/zfs/os/linux/kernel
  74         ZFS_MODULE_CFLAGS += -include $(srctree)/include/zfs/zfs_config.h
  75         ZFS_MODULE_CFLAGS += -std=gnu99 -Wno-declaration-after-statement
  76         ZFS_MODULE_CPPFLAGS  = -D_KERNEL
  77         ZFS_MODULE_CPPFLAGS += -UDEBUG -DNDEBUG
  78         export ZFS_MODULE_CFLAGS ZFS_MODULE_CPPFLAGS
  79
  80         obj-$(CONFIG_ZFS) :=
  81         EOF
  82
  83         for MODULE in "${MODULES[@]}"
  84         do
  85                 echo 'obj-$(CONFIG_ZFS) += ' "$MODULE/"
  86         done
  87 } > "$KERNEL_DIR/fs/zfs/Kbuild"
  88
  89 add_after()
  90 {
  91         local FILE="$1"
  92         local MARKER="$2"
  93         local NEW="$3"
  94         local LINE
  95
  96         while IFS='' read -r LINE
  97         do
  98                 echo "$LINE"
  99
 100                 if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
 101                 then
 102                         echo "$NEW"
 103                         MARKER=''
 104                         if IFS='' read -r LINE
 105                         then
 106                                 [ "$LINE" != "$NEW" ] && echo "$LINE"
 107                         fi
 108                 fi
 109         done < "$FILE" > "$FILE.new"
 110
 111         mv "$FILE.new" "$FILE"
 112 }
 113
 114 add_after "$KERNEL_DIR/fs/Kconfig" 'if BLOCK' 'source "fs/zfs/Kconfig"'
 115 add_after "$KERNEL_DIR/fs/Makefile" 'endif' 'obj-$(CONFIG_ZFS) += zfs/'
 116
 117 echo >&2
 118 echo "    $0: done." >&2
 119 echo "    $0: now you can build the kernel with ZFS support." >&2
 120 echo "    $0: make sure you enable ZFS support (CONFIG_ZFS) before building." >&2
 121 echo >&2