91d161857c
Use the --owner= and --group= options to make sure the entries in the built tar file are owned by root. Without this change, a careless sysadmin using the tar-pkg target can easily end up installing a kernel that is writable by the unprivileged user account used to build the kernel. Test that these options are understood before using them so that non-GNU versions of tar can still be used if the operator is appropriately cautious. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
115 lines
2.7 KiB
Bash
115 lines
2.7 KiB
Bash
#!/bin/sh
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#
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# buildtar 0.0.4
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#
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# (C) 2004-2006 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
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#
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# This script is used to compile a tarball from the currently
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# prepared kernel. Based upon the builddeb script from
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# Wichert Akkerman <wichert@wiggy.net>.
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#
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set -e
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#
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# Some variables and settings used throughout the script
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#
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tmpdir="${objtree}/tar-install"
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tarball="${objtree}/linux-${KERNELRELEASE}.tar"
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#
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# Figure out how to compress, if requested at all
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#
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case "${1}" in
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tar-pkg)
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compress="cat"
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file_ext=""
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;;
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targz-pkg)
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compress="gzip -c9"
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file_ext=".gz"
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;;
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tarbz2-pkg)
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compress="bzip2 -c9"
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file_ext=".bz2"
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;;
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*)
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echo "Unknown tarball target \"${1}\" requested, please add it to ${0}." >&2
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exit 1
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;;
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esac
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#
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# Clean-up and re-create the temporary directory
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#
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rm -rf -- "${tmpdir}"
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mkdir -p -- "${tmpdir}/boot"
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#
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# Try to install modules
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#
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if grep -q '^CONFIG_MODULES=y' "${objtree}/.config"; then
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make ARCH="${ARCH}" O="${objtree}" KBUILD_SRC= INSTALL_MOD_PATH="${tmpdir}" modules_install
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fi
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#
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# Install basic kernel files
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#
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cp -v -- "${objtree}/System.map" "${tmpdir}/boot/System.map-${KERNELRELEASE}"
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cp -v -- "${objtree}/.config" "${tmpdir}/boot/config-${KERNELRELEASE}"
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cp -v -- "${objtree}/vmlinux" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
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#
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# Install arch-specific kernel image(s)
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#
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case "${ARCH}" in
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x86|i386|x86_64)
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[ -f "${objtree}/arch/x86/boot/bzImage" ] && cp -v -- "${objtree}/arch/x86/boot/bzImage" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
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;;
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alpha)
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[ -f "${objtree}/arch/alpha/boot/vmlinux.gz" ] && cp -v -- "${objtree}/arch/alpha/boot/vmlinux.gz" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
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;;
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parisc*)
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[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
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[ -f "${objtree}/lifimage" ] && cp -v -- "${objtree}/lifimage" "${tmpdir}/boot/lifimage-${KERNELRELEASE}"
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;;
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vax)
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[ -f "${objtree}/vmlinux.SYS" ] && cp -v -- "${objtree}/vmlinux.SYS" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}.SYS"
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[ -f "${objtree}/vmlinux.dsk" ] && cp -v -- "${objtree}/vmlinux.dsk" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}.dsk"
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;;
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*)
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[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-kbuild-${KERNELRELEASE}"
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echo "" >&2
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echo '** ** ** WARNING ** ** **' >&2
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echo "" >&2
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echo "Your architecture did not define any architecture-dependant files" >&2
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echo "to be placed into the tarball. Please add those to ${0} ..." >&2
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echo "" >&2
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sleep 5
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;;
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esac
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#
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# Create the tarball
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#
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(
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cd "${tmpdir}"
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opts=
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if tar --owner=root --group=root --help >/dev/null 2>&1; then
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opts="--owner=root --group=root"
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fi
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tar cf - . $opts | ${compress} > "${tarball}${file_ext}"
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)
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echo "Tarball successfully created in ${tarball}${file_ext}"
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exit 0
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