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 -e 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 rm -rf ${pdir} 32 33 # Only some architectures with OF support have this target 34 if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${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 # Install the maintainer scripts 69 # Note: hook scripts under /etc/kernel are also executed by official Debian 70 # kernel packages, as well as kernel packages built using make-kpkg. 71 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and 72 # so do we; recent versions of dracut and initramfs-tools will obey this. 73 debhookdir=${KDEB_HOOKDIR:-/etc/kernel} 74 for script in postinst postrm preinst prerm; do 75 mkdir -p "${pdir}${debhookdir}/${script}.d" 76 77 mkdir -p "${pdir}/DEBIAN" 78 cat <<-EOF > "${pdir}/DEBIAN/${script}" 79 80 #!/bin/sh 81 82 set -e 83 84 # Pass maintainer script parameters to hook scripts 85 export DEB_MAINT_PARAMS="\$*" 86 87 # Tell initramfs builder whether it's wanted 88 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No) 89 90 test -d ${debhookdir}/${script}.d && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" ${debhookdir}/${script}.d 91 exit 0 92 EOF 93 chmod 755 "${pdir}/DEBIAN/${script}" 94 done 95} 96 97install_linux_image_dbg () { 98 pdir=debian/$1 99 100 rm -rf ${pdir} 101 102 # Parse modules.order directly because 'make modules_install' may sign, 103 # compress modules, and then run unneeded depmod. 104 while read -r mod; do 105 mod="${mod%.o}.ko" 106 dbg="${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/kernel/${mod}" 107 buildid=$("${READELF}" -n "${mod}" | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p') 108 link="${pdir}/usr/lib/debug/.build-id/${buildid}.debug" 109 110 mkdir -p "${dbg%/*}" "${link%/*}" 111 "${OBJCOPY}" --only-keep-debug "${mod}" "${dbg}" 112 ln -sf --relative "${dbg}" "${link}" 113 done < modules.order 114 115 # Build debug package 116 # Different tools want the image in different locations 117 # perf 118 mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/ 119 cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/ 120 # systemtap 121 mkdir -p ${pdir}/usr/lib/debug/boot/ 122 ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE} 123 # kdump-tools 124 ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE} 125} 126 127install_kernel_headers () { 128 pdir=debian/$1 129 version=${1#linux-headers-} 130 131 rm -rf $pdir 132 133 "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}" 134 135 mkdir -p $pdir/lib/modules/$version/ 136 ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build 137} 138 139install_libc_headers () { 140 pdir=debian/$1 141 142 rm -rf $pdir 143 144 $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr 145 146 # move asm headers to /usr/include/<libc-machine>/asm to match the structure 147 # used by Debian-based distros (to support multi-arch) 148 mkdir "$pdir/usr/include/${DEB_HOST_MULTIARCH}" 149 mv "$pdir/usr/include/asm" "$pdir/usr/include/${DEB_HOST_MULTIARCH}" 150} 151 152package=$1 153 154case "${package}" in 155*-dbg) 156 install_linux_image_dbg "${package}";; 157linux-image-*|user-mode-linux-*) 158 install_linux_image "${package}";; 159linux-libc-dev) 160 install_libc_headers "${package}";; 161linux-headers-*) 162 install_kernel_headers "${package}";; 163esac 164