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