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         ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" modules_install
  66         rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build"
  67         rm -f "${pdir}/lib/modules/${KERNELRELEASE}/source"
  68
  69         # Install the kernel
  70         if [ "${ARCH}" = um ] ; then
  71                 mkdir -p "${pdir}/usr/lib/uml/modules"
  72                 mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"
  73                 mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"
  74                 cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"
  75                 cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"
  76                 gzip "${pdir}/usr/share/doc/${pname}/config"
  77         else
  78                 mkdir -p "${pdir}/boot"
  79                 cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"
  80                 cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"
  81         fi
  82
  83         # Not all arches have the same installed path in debian
  84         # XXX: have each arch Makefile export a variable of the canonical image install
  85         # path instead
  86         case "${SRCARCH}" in
  87         um)
  88                 installed_image_path="usr/bin/linux-${KERNELRELEASE}";;
  89         parisc|mips|powerpc)
  90                 installed_image_path="boot/vmlinux-${KERNELRELEASE}";;
  91         *)
  92                 installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;
  93         esac
  94         cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}"
  95
  96         # Install the maintainer scripts
  97         # Note: hook scripts under /etc/kernel are also executed by official Debian
  98         # kernel packages, as well as kernel packages built using make-kpkg.
  99         # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
 100         # so do we; recent versions of dracut and initramfs-tools will obey this.
 101         debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
 102         for script in postinst postrm preinst prerm; do
 103                 mkdir -p "${pdir}${debhookdir}/${script}.d"
 104
 105                 mkdir -p "${pdir}/DEBIAN"
 106                 cat <<-EOF > "${pdir}/DEBIAN/${script}"
 107
 108                 #!/bin/sh
 109
 110                 set -e
 111
 112                 # Pass maintainer script parameters to hook scripts
 113                 export DEB_MAINT_PARAMS="\$*"
 114
 115                 # Tell initramfs builder whether it's wanted
 116                 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
 117
 118                 test -d ${debhookdir}/${script}.d && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" ${debhookdir}/${script}.d
 119                 exit 0
 120                 EOF
 121                 chmod 755 "${pdir}/DEBIAN/${script}"
 122         done
 123 }
 124
 125 install_linux_image_dbg () {
 126         pdir=$1
 127         image_pdir=$2
 128
 129         rm -rf ${pdir}
 130
 131         for module in $(find ${image_pdir}/lib/modules/ -name *.ko -printf '%P\n'); do
 132                 module=lib/modules/${module}
 133                 mkdir -p $(dirname ${pdir}/usr/lib/debug/${module})
 134                 # only keep debug symbols in the debug file
 135                 ${OBJCOPY} --only-keep-debug ${image_pdir}/${module} ${pdir}/usr/lib/debug/${module}
 136                 # strip original module from debug symbols
 137                 ${OBJCOPY} --strip-debug ${image_pdir}/${module}
 138                 # then add a link to those
 139                 ${OBJCOPY} --add-gnu-debuglink=${pdir}/usr/lib/debug/${module} ${image_pdir}/${module}
 140         done
 141
 142         # re-sign stripped modules
 143         if is_enabled CONFIG_MODULE_SIG_ALL; then
 144                 ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${image_pdir}" modules_sign
 145         fi
 146
 147         # Build debug package
 148         # Different tools want the image in different locations
 149         # perf
 150         mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 151         cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 152         # systemtap
 153         mkdir -p ${pdir}/usr/lib/debug/boot/
 154         ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}
 155         # kdump-tools
 156         ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
 157 }
 158
 159 install_kernel_headers () {
 160         pdir=$1
 161         version=$2
 162
 163         rm -rf $pdir
 164
 165         (
 166                 cd $srctree
 167                 find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
 168                 find include scripts -type f -o -type l
 169                 find arch/$SRCARCH -name Kbuild.platforms -o -name Platform
 170                 find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
 171         ) > debian/hdrsrcfiles
 172
 173         {
 174                 if is_enabled CONFIG_OBJTOOL; then
 175                         echo tools/objtool/objtool
 176                 fi
 177
 178                 find arch/$SRCARCH/include Module.symvers include scripts -type f
 179
 180                 if is_enabled CONFIG_GCC_PLUGINS; then
 181                         find scripts/gcc-plugins -name \*.so
 182                 fi
 183         } > debian/hdrobjfiles
 184
 185         destdir=$pdir/usr/src/linux-headers-$version
 186         mkdir -p $destdir
 187         tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
 188         tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
 189         rm -f debian/hdrsrcfiles debian/hdrobjfiles
 190
 191         # copy .config manually to be where it's expected to be
 192         cp $KCONFIG_CONFIG $destdir/.config
 193
 194         mkdir -p $pdir/lib/modules/$version/
 195         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 196 }
 197
 198 install_libc_headers () {
 199         pdir=$1
 200
 201         rm -rf $pdir
 202
 203         $MAKE -f $srctree/Makefile headers
 204         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
 205
 206         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
 207         # used by Debian-based distros (to support multi-arch)
 208         host_arch=$(dpkg-architecture -a$DEB_HOST_ARCH -qDEB_HOST_MULTIARCH)
 209         mkdir $pdir/usr/include/$host_arch
 210         mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 211 }
 212
 213 rm -f debian/files
 214
 215 packages_enabled=$(dh_listpackages)
 216
 217 for package in ${packages_enabled}
 218 do
 219         case ${package} in
 220         *-dbg)
 221                 # This must be done after linux-image, that is, we expect the
 222                 # debug package appears after linux-image in debian/control.
 223                 install_linux_image_dbg debian/linux-image-dbg debian/linux-image;;
 224         linux-image-*|user-mode-linux-*)
 225                 install_linux_image debian/linux-image ${package};;
 226         linux-libc-dev)
 227                 install_libc_headers debian/linux-libc-dev;;
 228         linux-headers-*)
 229                 install_kernel_headers debian/linux-headers ${package#linux-headers-};;
 230         esac
 231 done
 232
 233 for package in ${packages_enabled}
 234 do
 235         case ${package} in
 236         *-dbg)
 237                 create_package ${package} debian/linux-image-dbg;;
 238         linux-image-*|user-mode-linux-*)
 239                 create_package ${package} debian/linux-image;;
 240         linux-libc-dev)
 241                 create_package ${package} debian/linux-libc-dev;;
 242         linux-headers-*)
 243                 create_package ${package} debian/linux-headers;;
 244         esac
 245 done
 246
 247 exit 0