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