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 create_package() {
  16         local pname="$1" pdir="$2"
  17
  18         mkdir -m 755 -p "$pdir/DEBIAN"
  19         mkdir -p "$pdir/usr/share/doc/$pname"
  20         cp debian/copyright "$pdir/usr/share/doc/$pname/"
  21         cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
  22         gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
  23         sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
  24                 | xargs -r0 md5sum > DEBIAN/md5sums"
  25
  26         # Fix ownership and permissions
  27         chown -R root:root "$pdir"
  28         chmod -R go-w "$pdir"
  29         # in case we are in a restrictive umask environment like 0077
  30         chmod -R a+rX "$pdir"
  31
  32         # Create the package
  33         dpkg-gencontrol -p$pname -P"$pdir"
  34         dpkg --build "$pdir" ..
  35 }
  36
  37 version=$KERNELRELEASE
  38 tmpdir="$objtree/debian/tmp"
  39 kernel_headers_dir="$objtree/debian/hdrtmp"
  40 libc_headers_dir="$objtree/debian/headertmp"
  41 dbg_dir="$objtree/debian/dbgtmp"
  42 packagename=linux-image-$version
  43 kernel_headers_packagename=linux-headers-$version
  44 libc_headers_packagename=linux-libc-dev
  45 dbg_packagename=$packagename-dbg
  46
  47 if [ "$ARCH" = "um" ] ; then
  48         packagename=user-mode-linux-$version
  49 fi
  50
  51 # Not all arches have the same installed path in debian
  52 # XXX: have each arch Makefile export a variable of the canonical image install
  53 # path instead
  54 case $ARCH in
  55 um)
  56         installed_image_path="usr/bin/linux-$version"
  57         ;;
  58 parisc|mips|powerpc)
  59         installed_image_path="boot/vmlinux-$version"
  60         ;;
  61 *)
  62         installed_image_path="boot/vmlinuz-$version"
  63 esac
  64
  65 BUILD_DEBUG="$(grep -s '^CONFIG_DEBUG_INFO=y' $KCONFIG_CONFIG || true)"
  66
  67 # Setup the directory structure
  68 rm -rf "$tmpdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir" $objtree/debian/files
  69 mkdir -m 755 -p "$tmpdir/DEBIAN"
  70 mkdir -p "$tmpdir/lib" "$tmpdir/boot"
  71 mkdir -p "$kernel_headers_dir/lib/modules/$version/"
  72
  73 # Build and install the kernel
  74 if [ "$ARCH" = "um" ] ; then
  75         mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
  76         $MAKE linux
  77         cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
  78         cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
  79         gzip "$tmpdir/usr/share/doc/$packagename/config"
  80 else
  81         cp System.map "$tmpdir/boot/System.map-$version"
  82         cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
  83 fi
  84 cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path"
  85
  86 if grep -q "^CONFIG_OF_EARLY_FLATTREE=y" $KCONFIG_CONFIG ; then
  87         # Only some architectures with OF support have this target
  88         if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then
  89                 $MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
  90         fi
  91 fi
  92
  93 if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
  94         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_install
  95         rm -f "$tmpdir/lib/modules/$version/build"
  96         rm -f "$tmpdir/lib/modules/$version/source"
  97         if [ "$ARCH" = "um" ] ; then
  98                 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
  99                 rmdir "$tmpdir/lib/modules/$version"
 100         fi
 101         if [ -n "$BUILD_DEBUG" ] ; then
 102                 for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
 103                         module=lib/modules/$module
 104                         mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 105                         # only keep debug symbols in the debug file
 106                         $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module
 107                         # strip original module from debug symbols
 108                         $OBJCOPY --strip-debug $tmpdir/$module
 109                         # then add a link to those
 110                         $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module
 111                 done
 112
 113                 # resign stripped modules
 114                 MODULE_SIG_ALL="$(grep -s '^CONFIG_MODULE_SIG_ALL=y' $KCONFIG_CONFIG || true)"
 115                 if [ -n "$MODULE_SIG_ALL" ]; then
 116                         INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_sign
 117                 fi
 118         fi
 119 fi
 120
 121 if [ "$ARCH" != "um" ]; then
 122         $MAKE -f $srctree/Makefile headers_check
 123         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH="$libc_headers_dir/usr"
 124 fi
 125
 126 # Install the maintainer scripts
 127 # Note: hook scripts under /etc/kernel are also executed by official Debian
 128 # kernel packages, as well as kernel packages built using make-kpkg.
 129 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 130 # so do we; recent versions of dracut and initramfs-tools will obey this.
 131 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 132 if grep -q '^CONFIG_BLK_DEV_INITRD=y' $KCONFIG_CONFIG; then
 133         want_initrd=Yes
 134 else
 135         want_initrd=No
 136 fi
 137 for script in postinst postrm preinst prerm ; do
 138         mkdir -p "$tmpdir$debhookdir/$script.d"
 139         cat <<EOF > "$tmpdir/DEBIAN/$script"
 140 #!/bin/sh
 141
 142 set -e
 143
 144 # Pass maintainer script parameters to hook scripts
 145 export DEB_MAINT_PARAMS="\$*"
 146
 147 # Tell initramfs builder whether it's wanted
 148 export INITRD=$want_initrd
 149
 150 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
 151 exit 0
 152 EOF
 153         chmod 755 "$tmpdir/DEBIAN/$script"
 154 done
 155
 156 # Build kernel header package
 157 (cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl) > "$objtree/debian/hdrsrcfiles"
 158 (cd $srctree; find arch/*/include include scripts -type f -o -type l) >> "$objtree/debian/hdrsrcfiles"
 159 (cd $srctree; find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform) >> "$objtree/debian/hdrsrcfiles"
 160 (cd $srctree; find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f) >> "$objtree/debian/hdrsrcfiles"
 161 if grep -q '^CONFIG_STACK_VALIDATION=y' $KCONFIG_CONFIG ; then
 162         (cd $objtree; find tools/objtool -type f -executable) >> "$objtree/debian/hdrobjfiles"
 163 fi
 164 (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
 165 if grep -q '^CONFIG_GCC_PLUGINS=y' $KCONFIG_CONFIG ; then
 166         (cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
 167 fi
 168 destdir=$kernel_headers_dir/usr/src/linux-headers-$version
 169 mkdir -p "$destdir"
 170 (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
 171 (cd $objtree; tar -c -f - -T -) < "$objtree/debian/hdrobjfiles" | (cd $destdir; tar -xf -)
 172 (cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
 173 ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
 174 rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
 175
 176 if [ "$ARCH" != "um" ]; then
 177         create_package "$kernel_headers_packagename" "$kernel_headers_dir"
 178         create_package "$libc_headers_packagename" "$libc_headers_dir"
 179 fi
 180
 181 create_package "$packagename" "$tmpdir"
 182
 183 if [ -n "$BUILD_DEBUG" ] ; then
 184         # Build debug package
 185         # Different tools want the image in different locations
 186         # perf
 187         mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
 188         cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
 189         # systemtap
 190         mkdir -p $dbg_dir/usr/lib/debug/boot/
 191         ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
 192         # kdump-tools
 193         ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
 194         create_package "$dbg_packagename" "$dbg_dir"
 195 fi
 196
 197 exit 0