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 -eu
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 install_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
94 install_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
122 install_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
132 install_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
143 package=$1
144
145 case "${package}" in
146 *-dbg)
147 install_linux_image_dbg "${package}";;
148 linux-image-*|user-mode-linux-*)
149 install_linux_image "${package}";;
150 linux-libc-dev)
151 install_libc_headers "${package}";;
152 linux-headers-*)
153 install_kernel_headers "${package}";;
154 esac
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