scripts/package/builddeb

   1 #!/bin/sh
   2 #
   3 # builddeb 1.3
   4 # Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
   5 #
   6 # Simple script to generate a deb package for a Linux kernel. All the
   7 # complexity of what to do with a kernel after it is installed or removed
   8 # is left to other scripts and packages: they can install scripts in the
   9 # /etc/kernel/{pre,post}{inst,rm}.d/ directories (or an alternative location
  10 # specified in KDEB_HOOKDIR) that will be called on package install and
  11 # removal.
  12
  13 set -e
  14
  15 is_enabled() {
  16         grep -q "^$1=y" include/config/auto.conf
  17 }
  18
  19 if_enabled_echo() {
  20         if is_enabled "$1"; then
  21                 echo -n "$2"
  22         elif [ $# -ge 3 ]; then
  23                 echo -n "$3"
  24         fi
  25 }
  26
  27 create_package() {
  28         local pname="$1" pdir="$2"
  29
  30         mkdir -m 755 -p "$pdir/DEBIAN"
  31         mkdir -p "$pdir/usr/share/doc/$pname"
  32         cp debian/copyright "$pdir/usr/share/doc/$pname/"
  33         cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
  34         gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
  35         sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
  36                 | xargs -r0 md5sum > DEBIAN/md5sums"
  37
  38         # Fix ownership and permissions
  39         chown -R root:root "$pdir"
  40         chmod -R go-w "$pdir"
  41         # in case we are in a restrictive umask environment like 0077
  42         chmod -R a+rX "$pdir"
  43
  44         # Create the package
  45         dpkg-gencontrol -p$pname -P"$pdir"
  46         dpkg-deb ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..
  47 }
  48
  49 deploy_kernel_headers () {
  50         pdir=$1
  51
  52         rm -rf $pdir
  53
  54         (
  55                 cd $srctree
  56                 find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
  57                 find include scripts -type f -o -type l
  58                 find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform
  59                 find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
  60         ) > debian/hdrsrcfiles
  61
  62         {
  63                 if is_enabled CONFIG_STACK_VALIDATION; then
  64                         echo tools/objtool/objtool
  65                 fi
  66
  67                 find arch/$SRCARCH/include Module.symvers include scripts -type f
  68
  69                 if is_enabled CONFIG_GCC_PLUGINS; then
  70                         find scripts/gcc-plugins -name \*.so
  71                 fi
  72         } > debian/hdrobjfiles
  73
  74         destdir=$pdir/usr/src/linux-headers-$version
  75         mkdir -p $destdir
  76         tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
  77         tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
  78         rm -f debian/hdrsrcfiles debian/hdrobjfiles
  79
  80         # copy .config manually to be where it's expected to be
  81         cp $KCONFIG_CONFIG $destdir/.config
  82
  83         mkdir -p $pdir/lib/modules/$version/
  84         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
  85 }
  86
  87 deploy_libc_headers () {
  88         pdir=$1
  89
  90         rm -rf $pdir
  91
  92         $MAKE -f $srctree/Makefile headers
  93         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
  94
  95         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
  96         # used by Debian-based distros (to support multi-arch)
  97         host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
  98         mkdir $pdir/usr/include/$host_arch
  99         mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 100 }
 101
 102 version=$KERNELRELEASE
 103 tmpdir=debian/linux-image
 104 dbg_dir=debian/linux-image-dbg
 105 packagename=linux-image-$version
 106 dbg_packagename=$packagename-dbg
 107
 108 if [ "$ARCH" = "um" ] ; then
 109         packagename=user-mode-linux-$version
 110 fi
 111
 112 # Not all arches have the same installed path in debian
 113 # XXX: have each arch Makefile export a variable of the canonical image install
 114 # path instead
 115 case $ARCH in
 116 um)
 117         installed_image_path="usr/bin/linux-$version"
 118         ;;
 119 parisc|mips|powerpc)
 120         installed_image_path="boot/vmlinux-$version"
 121         ;;
 122 *)
 123         installed_image_path="boot/vmlinuz-$version"
 124 esac
 125
 126 BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes)
 127
 128 # Setup the directory structure
 129 rm -rf "$tmpdir" "$dbg_dir" debian/files
 130 mkdir -m 755 -p "$tmpdir/DEBIAN"
 131 mkdir -p "$tmpdir/lib" "$tmpdir/boot"
 132
 133 # Install the kernel
 134 if [ "$ARCH" = "um" ] ; then
 135         mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
 136         cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
 137         cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
 138         gzip "$tmpdir/usr/share/doc/$packagename/config"
 139 else
 140         cp System.map "$tmpdir/boot/System.map-$version"
 141         cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
 142 fi
 143 cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path"
 144
 145 if is_enabled CONFIG_OF_EARLY_FLATTREE; then
 146         # Only some architectures with OF support have this target
 147         if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then
 148                 $MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
 149         fi
 150 fi
 151
 152 if is_enabled CONFIG_MODULES; then
 153         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_install
 154         rm -f "$tmpdir/lib/modules/$version/build"
 155         rm -f "$tmpdir/lib/modules/$version/source"
 156         if [ "$ARCH" = "um" ] ; then
 157                 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
 158                 rmdir "$tmpdir/lib/modules/$version"
 159         fi
 160         if [ -n "$BUILD_DEBUG" ] ; then
 161                 for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
 162                         module=lib/modules/$module
 163                         mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 164                         # only keep debug symbols in the debug file
 165                         $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
 166                         # strip original module from debug symbols
 167                         $OBJCOPY --strip-debug $tmpdir/$module
 168                         # then add a link to those
 169                         $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
 170                 done
 171
 172                 # resign stripped modules
 173                 if is_enabled CONFIG_MODULE_SIG_ALL; then
 174                         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_sign
 175                 fi
 176         fi
 177 fi
 178
 179 # Install the maintainer scripts
 180 # Note: hook scripts under /etc/kernel are also executed by official Debian
 181 # kernel packages, as well as kernel packages built using make-kpkg.
 182 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 183 # so do we; recent versions of dracut and initramfs-tools will obey this.
 184 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 185 for script in postinst postrm preinst prerm ; do
 186         mkdir -p "$tmpdir$debhookdir/$script.d"
 187         cat <<EOF > "$tmpdir/DEBIAN/$script"
 188 #!/bin/sh
 189
 190 set -e
 191
 192 # Pass maintainer script parameters to hook scripts
 193 export DEB_MAINT_PARAMS="\$*"
 194
 195 # Tell initramfs builder whether it's wanted
 196 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
 197
 198 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
 199 exit 0
 200 EOF
 201         chmod 755 "$tmpdir/DEBIAN/$script"
 202 done
 203
 204 if [ "$ARCH" != "um" ]; then
 205         deploy_kernel_headers debian/linux-headers
 206         create_package linux-headers-$version debian/linux-headers
 207
 208         deploy_libc_headers debian/linux-libc-dev
 209         create_package linux-libc-dev debian/linux-libc-dev
 210 fi
 211
 212 create_package "$packagename" "$tmpdir"
 213
 214 if [ -n "$BUILD_DEBUG" ] ; then
 215         # Build debug package
 216         # Different tools want the image in different locations
 217         # perf
 218         mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
 219         cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
 220         # systemtap
 221         mkdir -p $dbg_dir/usr/lib/debug/boot/
 222         ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
 223         # kdump-tools
 224         ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
 225         create_package "$dbg_packagename" "$dbg_dir"
 226 fi
 227
 228 exit 0