scripts/package/builddeb

   1 #!/bin/sh
   2 #
   3 # builddeb 1.3
   4 # Copyright 2003 Wichert Akkerman <[email protected]>
   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. Scripts can be placed into the
   9 # preinst, postinst, prerm and postrm directories in /etc/kernel or
  10 # /usr/share/kernel. A different list of search directories can be given
  11 # via KDEB_HOOKDIR. Scripts in directories earlier in the list will
  12 # override scripts of the same name in later directories.  The script will
  13 # be called on package installation and removal.
  14
  15 set -eu
  16
  17 is_enabled() {
  18         grep -q "^$1=y" include/config/auto.conf
  19 }
  20
  21 if_enabled_echo() {
  22         if is_enabled "$1"; then
  23                 echo -n "$2"
  24         elif [ $# -ge 3 ]; then
  25                 echo -n "$3"
  26         fi
  27 }
  28
  29 install_linux_image () {
  30         pname=$1
  31         pdir=debian/$1
  32
  33         # Only some architectures with OF support have this target
  34         if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
  35                 ${MAKE} -f ${srctree}/Makefile INSTALL_DTBS_PATH="${pdir}/usr/lib/linux-image-${KERNELRELEASE}" dtbs_install
  36         fi
  37
  38         ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" INSTALL_MOD_STRIP=1 modules_install
  39         rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build"
  40
  41         # Install the kernel
  42         if [ "${ARCH}" = um ] ; then
  43                 mkdir -p "${pdir}/usr/lib/uml/modules"
  44                 mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"
  45                 mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"
  46                 cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"
  47                 cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"
  48                 gzip "${pdir}/usr/share/doc/${pname}/config"
  49         else
  50                 mkdir -p "${pdir}/boot"
  51                 cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"
  52                 cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"
  53         fi
  54
  55         # Not all arches have the same installed path in debian
  56         # XXX: have each arch Makefile export a variable of the canonical image install
  57         # path instead
  58         case "${SRCARCH}" in
  59         um)
  60                 installed_image_path="usr/bin/linux-${KERNELRELEASE}";;
  61         parisc|mips|powerpc)
  62                 installed_image_path="boot/vmlinux-${KERNELRELEASE}";;
  63         *)
  64                 installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;
  65         esac
  66         cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}"
  67
  68         if [ "${ARCH}" != um ]; then
  69                 install_maint_scripts "${pdir}"
  70         fi
  71 }
  72
  73 install_maint_scripts () {
  74         # Install the maintainer scripts
  75         # Note: hook scripts under /etc/kernel are also executed by official Debian
  76         # kernel packages, as well as kernel packages built using make-kpkg.
  77         # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
  78         # so do we; recent versions of dracut and initramfs-tools will obey this.
  79         debhookdir=${KDEB_HOOKDIR:-/etc/kernel /usr/share/kernel}
  80         for script in postinst postrm preinst prerm; do
  81                 mkdir -p "${pdir}/DEBIAN"
  82                 cat <<-EOF > "${pdir}/DEBIAN/${script}"
  83                 #!/bin/sh
  84
  85                 set -e
  86
  87                 # Pass maintainer script parameters to hook scripts
  88                 export DEB_MAINT_PARAMS="\$*"
  89
  90                 # Tell initramfs builder whether it's wanted
  91                 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
  92
  93                 # run-parts will error out if one of its directory arguments does not
  94                 # exist, so filter the list of hook directories accordingly.
  95                 hookdirs=
  96                 for dir in ${debhookdir}; do
  97                         test -d "\$dir/${script}.d" || continue
  98                         hookdirs="\$hookdirs \$dir/${script}.d"
  99                 done
 100                 hookdirs="\${hookdirs# }"
 101                 test -n "\$hookdirs" && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" \$hookdirs
 102                 exit 0
 103                 EOF
 104                 chmod 755 "${pdir}/DEBIAN/${script}"
 105         done
 106 }
 107
 108 install_linux_image_dbg () {
 109         pdir=debian/$1
 110
 111         # Parse modules.order directly because 'make modules_install' may sign,
 112         # compress modules, and then run unneeded depmod.
 113         if is_enabled CONFIG_MODULES; then
 114                 while read -r mod; do
 115                         mod="${mod%.o}.ko"
 116                         dbg="${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/kernel/${mod}"
 117                         buildid=$("${READELF}" -n "${mod}" | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p')
 118                         link="${pdir}/usr/lib/debug/.build-id/${buildid}.debug"
 119
 120                         mkdir -p "${dbg%/*}" "${link%/*}"
 121                         "${OBJCOPY}" --only-keep-debug "${mod}" "${dbg}"
 122                         ln -sf --relative "${dbg}" "${link}"
 123                 done < modules.order
 124         fi
 125
 126         # Build debug package
 127         # Different tools want the image in different locations
 128         # perf
 129         mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 130         cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 131         # systemtap
 132         mkdir -p ${pdir}/usr/lib/debug/boot/
 133         ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}
 134         # kdump-tools
 135         ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
 136 }
 137
 138 install_kernel_headers () {
 139         pdir=debian/$1
 140         version=${1#linux-headers-}
 141
 142         CC="${DEB_HOST_GNU_TYPE}-gcc" "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}"
 143
 144         mkdir -p $pdir/lib/modules/$version/
 145         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 146 }
 147
 148 install_libc_headers () {
 149         pdir=debian/$1
 150
 151         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
 152
 153         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
 154         # used by Debian-based distros (to support multi-arch)
 155         mkdir "$pdir/usr/include/${DEB_HOST_MULTIARCH}"
 156         mv "$pdir/usr/include/asm" "$pdir/usr/include/${DEB_HOST_MULTIARCH}"
 157 }
 158
 159 package=$1
 160
 161 case "${package}" in
 162 *-dbg)
 163         install_linux_image_dbg "${package}";;
 164 linux-image-*|user-mode-linux-*)
 165         install_linux_image "${package}";;
 166 linux-libc-dev)
 167         install_libc_headers "${package}";;
 168 linux-headers-*)
 169         install_kernel_headers "${package}";;
 170 esac