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 "$pdir"
  44         fi
  45         # a+rX in case we are in a restrictive umask environment like 0077
  46         # ug-s in case we build in a setuid/setgid directory
  47         chmod -R go-w,a+rX,ug-s "$pdir"
  48
  49         # Create the package
  50         dpkg-gencontrol -p$pname -P"$pdir"
  51         dpkg-deb $dpkg_deb_opts ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..
  52 }
  53
  54 install_linux_image () {
  55         pdir=$1
  56         pname=$2
  57
  58         rm -rf ${pdir}
  59
  60         # Only some architectures with OF support have this target
  61         if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
  62                 ${MAKE} -f ${srctree}/Makefile INSTALL_DTBS_PATH="${pdir}/usr/lib/linux-image-${KERNELRELEASE}" dtbs_install
  63         fi
  64
  65         if is_enabled CONFIG_MODULES; then
  66                 ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" modules_install
  67                 rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build"
  68                 rm -f "${pdir}/lib/modules/${KERNELRELEASE}/source"
  69                 if [ "${SRCARCH}" = um ] ; then
  70                         mkdir -p "${pdir}/usr/lib/uml/modules"
  71                         mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"
  72                 fi
  73         fi
  74
  75         # Install the kernel
  76         if [ "${ARCH}" = um ] ; then
  77                 mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"
  78                 cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"
  79                 cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"
  80                 gzip "${pdir}/usr/share/doc/${pname}/config"
  81         else
  82                 mkdir -p "${pdir}/boot"
  83                 cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"
  84                 cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"
  85         fi
  86
  87         # Not all arches have the same installed path in debian
  88         # XXX: have each arch Makefile export a variable of the canonical image install
  89         # path instead
  90         case "${SRCARCH}" in
  91         um)
  92                 installed_image_path="usr/bin/linux-${KERNELRELEASE}";;
  93         parisc|mips|powerpc)
  94                 installed_image_path="boot/vmlinux-${KERNELRELEASE}";;
  95         *)
  96                 installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;
  97         esac
  98         cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}"
  99
 100         # Install the maintainer scripts
 101         # Note: hook scripts under /etc/kernel are also executed by official Debian
 102         # kernel packages, as well as kernel packages built using make-kpkg.
 103         # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 104         # so do we; recent versions of dracut and initramfs-tools will obey this.
 105         debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 106         for script in postinst postrm preinst prerm; do
 107                 mkdir -p "${pdir}${debhookdir}/${script}.d"
 108
 109                 mkdir -p "${pdir}/DEBIAN"
 110                 cat <<-EOF > "${pdir}/DEBIAN/${script}"
 111
 112                 #!/bin/sh
 113
 114                 set -e
 115
 116                 # Pass maintainer script parameters to hook scripts
 117                 export DEB_MAINT_PARAMS="\$*"
 118
 119                 # Tell initramfs builder whether it's wanted
 120                 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
 121
 122                 test -d ${debhookdir}/${script}.d && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" ${debhookdir}/${script}.d
 123                 exit 0
 124                 EOF
 125                 chmod 755 "${pdir}/DEBIAN/${script}"
 126         done
 127 }
 128
 129 install_linux_image_dbg () {
 130         pdir=$1
 131         image_pdir=$2
 132
 133         rm -rf ${pdir}
 134
 135         for module in $(find ${image_pdir}/lib/modules/ -name *.ko -printf '%P\n'); do
 136                 module=lib/modules/${module}
 137                 mkdir -p $(dirname ${pdir}/usr/lib/debug/${module})
 138                 # only keep debug symbols in the debug file
 139                 ${OBJCOPY} --only-keep-debug ${image_pdir}/${module} ${pdir}/usr/lib/debug/${module}
 140                 # strip original module from debug symbols
 141                 ${OBJCOPY} --strip-debug ${image_pdir}/${module}
 142                 # then add a link to those
 143                 ${OBJCOPY} --add-gnu-debuglink=${pdir}/usr/lib/debug/${module} ${image_pdir}/${module}
 144         done
 145
 146         # re-sign stripped modules
 147         if is_enabled CONFIG_MODULE_SIG_ALL; then
 148                 ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${image_pdir}" modules_sign
 149         fi
 150
 151         # Build debug package
 152         # Different tools want the image in different locations
 153         # perf
 154         mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 155         cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 156         # systemtap
 157         mkdir -p ${pdir}/usr/lib/debug/boot/
 158         ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}
 159         # kdump-tools
 160         ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
 161 }
 162
 163 deploy_kernel_headers () {
 164         pdir=$1
 165
 166         rm -rf $pdir
 167
 168         (
 169                 cd $srctree
 170                 find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
 171                 find include scripts -type f -o -type l
 172                 find arch/$SRCARCH -name Kbuild.platforms -o -name Platform
 173                 find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
 174         ) > debian/hdrsrcfiles
 175
 176         {
 177                 if is_enabled CONFIG_OBJTOOL; then
 178                         echo tools/objtool/objtool
 179                 fi
 180
 181                 find arch/$SRCARCH/include Module.symvers include scripts -type f
 182
 183                 if is_enabled CONFIG_GCC_PLUGINS; then
 184                         find scripts/gcc-plugins -name \*.so
 185                 fi
 186         } > debian/hdrobjfiles
 187
 188         destdir=$pdir/usr/src/linux-headers-$version
 189         mkdir -p $destdir
 190         tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
 191         tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
 192         rm -f debian/hdrsrcfiles debian/hdrobjfiles
 193
 194         # copy .config manually to be where it's expected to be
 195         cp $KCONFIG_CONFIG $destdir/.config
 196
 197         mkdir -p $pdir/lib/modules/$version/
 198         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 199 }
 200
 201 deploy_libc_headers () {
 202         pdir=$1
 203
 204         rm -rf $pdir
 205
 206         $MAKE -f $srctree/Makefile headers
 207         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
 208
 209         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
 210         # used by Debian-based distros (to support multi-arch)
 211         host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
 212         mkdir $pdir/usr/include/$host_arch
 213         mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 214 }
 215
 216 version=$KERNELRELEASE
 217 packagename=linux-image-$version
 218 dbg_packagename=$packagename-dbg
 219
 220 if [ "$ARCH" = "um" ] ; then
 221         packagename=user-mode-linux-$version
 222 fi
 223
 224 rm -f debian/files
 225
 226 if [ "$ARCH" != "um" ]; then
 227         if is_enabled CONFIG_MODULES; then
 228                 deploy_kernel_headers debian/linux-headers
 229                 create_package linux-headers-$version debian/linux-headers
 230         fi
 231
 232         deploy_libc_headers debian/linux-libc-dev
 233         create_package linux-libc-dev debian/linux-libc-dev
 234 fi
 235
 236 install_linux_image debian/linux-image "$packagename"
 237
 238 if is_enabled CONFIG_DEBUG_INFO; then
 239         install_linux_image_dbg debian/linux-image-dbg debian/linux-image
 240         create_package "$dbg_packagename" debian/linux-image-dbg
 241 fi
 242
 243 create_package "$packagename" debian/linux-image
 244
 245 exit 0