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="$2"
  29         local dpkg_deb_opts
  30
  31         mkdir -m 755 -p "$pdir/DEBIAN"
  32         mkdir -p "$pdir/usr/share/doc/$pname"
  33         cp debian/copyright "$pdir/usr/share/doc/$pname/"
  34         cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
  35         gzip -n -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
  36         sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
  37                 | xargs -r0 md5sum > DEBIAN/md5sums"
  38
  39         # Fix ownership and permissions
  40         if [ "$DEB_RULES_REQUIRES_ROOT" = "no" ]; then
  41                 dpkg_deb_opts="--root-owner-group"
  42         else
  43                 chown -R root:root "$pdir"
  44         fi
  45         chmod -R go-w "$pdir"
  46         # in case we are in a restrictive umask environment like 0077
  47         chmod -R a+rX "$pdir"
  48         # in case we build in a setuid/setgid directory
  49         chmod -R ug-s "$pdir"
  50
  51         # Create the package
  52         dpkg-gencontrol -p$pname -P"$pdir"
  53         dpkg-deb $dpkg_deb_opts ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..
  54 }
  55
  56 deploy_kernel_headers () {
  57         pdir=$1
  58
  59         rm -rf $pdir
  60
  61         (
  62                 cd $srctree
  63                 find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
  64                 find include scripts -type f -o -type l
  65                 find arch/$SRCARCH -name Kbuild.platforms -o -name Platform
  66                 find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
  67         ) > debian/hdrsrcfiles
  68
  69         {
  70                 if is_enabled CONFIG_STACK_VALIDATION; then
  71                         echo tools/objtool/objtool
  72                 fi
  73
  74                 find arch/$SRCARCH/include Module.symvers include scripts -type f
  75
  76                 if is_enabled CONFIG_GCC_PLUGINS; then
  77                         find scripts/gcc-plugins -name \*.so
  78                 fi
  79         } > debian/hdrobjfiles
  80
  81         destdir=$pdir/usr/src/linux-headers-$version
  82         mkdir -p $destdir
  83         tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
  84         tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
  85         rm -f debian/hdrsrcfiles debian/hdrobjfiles
  86
  87         # copy .config manually to be where it's expected to be
  88         cp $KCONFIG_CONFIG $destdir/.config
  89
  90         mkdir -p $pdir/lib/modules/$version/
  91         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
  92 }
  93
  94 deploy_libc_headers () {
  95         pdir=$1
  96
  97         rm -rf $pdir
  98
  99         $MAKE -f $srctree/Makefile headers
 100         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
 101
 102         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
 103         # used by Debian-based distros (to support multi-arch)
 104         host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
 105         mkdir $pdir/usr/include/$host_arch
 106         mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 107 }
 108
 109 version=$KERNELRELEASE
 110 tmpdir=debian/linux-image
 111 dbg_dir=debian/linux-image-dbg
 112 packagename=linux-image-$version
 113 dbg_packagename=$packagename-dbg
 114
 115 if [ "$ARCH" = "um" ] ; then
 116         packagename=user-mode-linux-$version
 117 fi
 118
 119 # Not all arches have the same installed path in debian
 120 # XXX: have each arch Makefile export a variable of the canonical image install
 121 # path instead
 122 case $ARCH in
 123 um)
 124         installed_image_path="usr/bin/linux-$version"
 125         ;;
 126 parisc|mips|powerpc)
 127         installed_image_path="boot/vmlinux-$version"
 128         ;;
 129 *)
 130         installed_image_path="boot/vmlinuz-$version"
 131 esac
 132
 133 BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes)
 134
 135 # Setup the directory structure
 136 rm -rf "$tmpdir" "$dbg_dir" debian/files
 137 mkdir -m 755 -p "$tmpdir/DEBIAN"
 138 mkdir -p "$tmpdir/lib" "$tmpdir/boot"
 139
 140 # Install the kernel
 141 if [ "$ARCH" = "um" ] ; then
 142         mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
 143         cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
 144         cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
 145         gzip "$tmpdir/usr/share/doc/$packagename/config"
 146 else
 147         cp System.map "$tmpdir/boot/System.map-$version"
 148         cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
 149 fi
 150 cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path"
 151
 152 if is_enabled CONFIG_OF_EARLY_FLATTREE; then
 153         # Only some architectures with OF support have this target
 154         if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then
 155                 $MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
 156         fi
 157 fi
 158
 159 if is_enabled CONFIG_MODULES; then
 160         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_install
 161         rm -f "$tmpdir/lib/modules/$version/build"
 162         rm -f "$tmpdir/lib/modules/$version/source"
 163         if [ "$ARCH" = "um" ] ; then
 164                 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
 165                 rmdir "$tmpdir/lib/modules/$version"
 166         fi
 167         if [ -n "$BUILD_DEBUG" ] ; then
 168                 for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
 169                         module=lib/modules/$module
 170                         mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 171                         # only keep debug symbols in the debug file
 172                         $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
 173                         # strip original module from debug symbols
 174                         $OBJCOPY --strip-debug $tmpdir/$module
 175                         # then add a link to those
 176                         $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
 177                 done
 178
 179                 # resign stripped modules
 180                 if is_enabled CONFIG_MODULE_SIG_ALL; then
 181                         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_sign
 182                 fi
 183         fi
 184 fi
 185
 186 # Install the maintainer scripts
 187 # Note: hook scripts under /etc/kernel are also executed by official Debian
 188 # kernel packages, as well as kernel packages built using make-kpkg.
 189 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 190 # so do we; recent versions of dracut and initramfs-tools will obey this.
 191 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 192 for script in postinst postrm preinst prerm ; do
 193         mkdir -p "$tmpdir$debhookdir/$script.d"
 194         cat <<EOF > "$tmpdir/DEBIAN/$script"
 195 #!/bin/sh
 196
 197 set -e
 198
 199 # Pass maintainer script parameters to hook scripts
 200 export DEB_MAINT_PARAMS="\$*"
 201
 202 # Tell initramfs builder whether it's wanted
 203 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
 204
 205 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
 206 exit 0
 207 EOF
 208         chmod 755 "$tmpdir/DEBIAN/$script"
 209 done
 210
 211 if [ "$ARCH" != "um" ]; then
 212         if is_enabled CONFIG_MODULES; then
 213                 deploy_kernel_headers debian/linux-headers
 214                 create_package linux-headers-$version debian/linux-headers
 215         fi
 216
 217         deploy_libc_headers debian/linux-libc-dev
 218         create_package linux-libc-dev debian/linux-libc-dev
 219 fi
 220
 221 create_package "$packagename" "$tmpdir"
 222
 223 if [ -n "$BUILD_DEBUG" ] ; then
 224         # Build debug package
 225         # Different tools want the image in different locations
 226         # perf
 227         mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
 228         cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
 229         # systemtap
 230         mkdir -p $dbg_dir/usr/lib/debug/boot/
 231         ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
 232         # kdump-tools
 233         ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
 234         create_package "$dbg_packagename" "$dbg_dir"
 235 fi
 236
 237 exit 0