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 13set -e 14 15is_enabled() { 16 grep -q "^$1=y" include/config/auto.conf 17} 18 19if_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 27create_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 49deploy_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 87deploy_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 102version=$KERNELRELEASE 103tmpdir=debian/linux-image 104dbg_dir=debian/linux-image-dbg 105packagename=linux-image-$version 106dbg_packagename=$packagename-dbg 107 108if [ "$ARCH" = "um" ] ; then 109 packagename=user-mode-linux-$version 110fi 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 115case $ARCH in 116um) 117 installed_image_path="usr/bin/linux-$version" 118 ;; 119parisc|mips|powerpc) 120 installed_image_path="boot/vmlinux-$version" 121 ;; 122*) 123 installed_image_path="boot/vmlinuz-$version" 124esac 125 126BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes) 127 128# Setup the directory structure 129rm -rf "$tmpdir" "$dbg_dir" debian/files 130mkdir -m 755 -p "$tmpdir/DEBIAN" 131mkdir -p "$tmpdir/lib" "$tmpdir/boot" 132 133# Install the kernel 134if [ "$ARCH" = "um" ] ; then 135 mkdir -p "$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/$packagename/config" 139else 140 cp System.map "$tmpdir/boot/System.map-$version" 141 cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version" 142fi 143cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path" 144 145if is_enabled CONFIG_OF_EARLY_FLATTREE; then 146 # Only some architectures with OF support have this target 147 if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then 148 $MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install 149 fi 150fi 151 152if is_enabled CONFIG_MODULES; then 153 INSTALL_MOD_PATH="$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 177fi 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 $INITRD to indicate whether an initramfs is wanted, and 183# so do we; recent versions of dracut and initramfs-tools will obey this. 184debhookdir=${KDEB_HOOKDIR:-/etc/kernel} 185for script in postinst postrm preinst prerm ; do 186 mkdir -p "$tmpdir$debhookdir/$script.d" 187 cat <<EOF > "$tmpdir/DEBIAN/$script" 188#!/bin/sh 189 190set -e 191 192# Pass maintainer script parameters to hook scripts 193export DEB_MAINT_PARAMS="\$*" 194 195# Tell initramfs builder whether it's wanted 196export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No) 197 198test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d 199exit 0 200EOF 201 chmod 755 "$tmpdir/DEBIAN/$script" 202done 203 204if [ "$ARCH" != "um" ]; then 205 deploy_kernel_headers debian/linux-headers 206 create_package linux-headers-$version debian/linux-headers 207 208 deploy_libc_headers debian/linux-libc-dev 209 create_package linux-libc-dev debian/linux-libc-dev 210fi 211 212create_package "$packagename" "$tmpdir" 213 214if [ -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" 226fi 227 228exit 0 229