mirror of
https://github.com/kata-containers/kata-containers.git
synced 2025-06-29 00:37:24 +00:00
Merge pull request #94 from Pennyzct/qemu
ci: refine qemu-options for arm64
This commit is contained in:
James O. D. Hunt
GitHub
commit
5d2a95b515
@ -16,6 +16,22 @@
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script_name=${0##*/}
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arch=$(arch)
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# Array of configure options.
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#
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# Each element is comprised of two parts in the form:
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#
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# tags:option
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#
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# Where,
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#
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# - 'tags' is a comma-separated list of values which denote why
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# the option is being specified.
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#
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# - 'option' is the hypervisor configuration option.
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typeset -a qemu_options
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typeset -A recognised_tags
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recognised_tags=(
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@ -183,26 +199,220 @@ show_array()
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[ "$one_line" = yes ] && echo
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}
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generate_qemu_options()
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{
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#---------------------------------------------------------------------
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# Disabled options
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# bluetooth support not required
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qemu_options+=(size:--disable-bluez)
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# braille support not required
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qemu_options+=(size:--disable-brlapi)
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# Don't build documentation
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qemu_options+=(minimal:--disable-docs)
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# Disable GUI (graphics)
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qemu_options+=(size:--disable-curses)
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qemu_options+=(size:--disable-gtk)
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qemu_options+=(size:--disable-opengl)
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qemu_options+=(size:--disable-sdl)
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qemu_options+=(size:--disable-spice)
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qemu_options+=(size:--disable-vte)
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# Disable graphical network access
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qemu_options+=(size:--disable-vnc)
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qemu_options+=(size:--disable-vnc-jpeg)
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qemu_options+=(size:--disable-vnc-png)
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qemu_options+=(size:--disable-vnc-sasl)
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# Disable unused filesystem support
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[ "$arch" == x86_64 ] && qemu_options+=(size:--disable-fdt)
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qemu_options+=(size:--disable-glusterfs)
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qemu_options+=(size:--disable-libiscsi)
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qemu_options+=(size:--disable-libnfs)
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qemu_options+=(size:--disable-libssh2)
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# Disable unused compression support
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qemu_options+=(size:--disable-bzip2)
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qemu_options+=(size:--disable-lzo)
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qemu_options+=(size:--disable-snappy)
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# Disable unused security options
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qemu_options+=(security:--disable-seccomp)
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qemu_options+=(security:--disable-tpm)
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# Disable userspace network access ("-net user")
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qemu_options+=(size:--disable-slirp)
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# Disable USB
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qemu_options+=(size:--disable-libusb)
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qemu_options+=(size:--disable-usb-redir)
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# Disable TCG support
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case "$arch" in
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aarch64) ;;
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x86_64) qemu_options+=(size:--disable-tcg);;
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ppc64le) qemu_options+=(size:--disable-tcg);;
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esac
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# SECURITY: Don't build a static binary (lowers security)
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# needed if qemu version is less than 2.7
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if [ "${qemu_version_major}" -eq 2 ] && [ "${qemu_version_minor}" -lt 7 ]; then
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qemu_options+=(security:--disable-static)
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fi
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if [ "${static}" == "true" ]; then
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qemu_options+=(misc:--static)
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fi
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# Not required as "-uuid ..." is always passed to the qemu binary
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qemu_options+=(size:--disable-uuid)
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# Disable debug
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case "$arch" in
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aarch64) ;;
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x86_64)
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qemu_options+=(size:--disable-debug-tcg)
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qemu_options+=(size:--disable-tcg-interpreter)
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;;
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ppc64le)
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qemu_options+=(size:--disable-debug-tcg)
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qemu_options+=(size:--disable-tcg-interpreter)
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;;
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esac
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qemu_options+=(size:--disable-qom-cast-debug)
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qemu_options+=(size:--disable-tcmalloc)
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# Disallow network downloads
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qemu_options+=(security:--disable-curl)
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# Disable Remote Direct Memory Access (Live Migration)
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# https://wiki.qemu.org/index.php/Features/RDMALiveMigration
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qemu_options+=(size:--disable-rdma)
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# Don't build the qemu-io, qemu-nbd and qemu-image tools
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qemu_options+=(size:--disable-tools)
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# Disable XEN driver
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case "$arch" in
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aarch64) ;;
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x86_64) qemu_options+=(size:--disable-xen);;
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ppc64le) qemu_options+=(size:--disable-xen);;
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esac
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# FIXME: why is this disabled?
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# (for reference, it's explicitly enabled in Ubuntu 17.10 and
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# implicitly enabled in Fedora 27).
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qemu_options+=(size:--disable-linux-aio)
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#---------------------------------------------------------------------
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# Enabled options
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# Enable kernel Virtual Machine support.
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# This is the default, but be explicit to avoid any future surprises
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qemu_options+=(speed:--enable-kvm)
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# Required for fast network access
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qemu_options+=(speed:--enable-vhost-net)
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# Always strip binaries
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# needed if qemu version is less than 2.7
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if [ "${qemu_version_major}" -eq 2 ] && [ "${qemu_version_minor}" -lt 7 ]; then
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qemu_options+=(size:--enable-strip)
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fi
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# Support Ceph RADOS Block Device (RBD)
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[ -z "${static}" ] && qemu_options+=(functionality:--enable-rbd)
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# In "passthrough" security mode
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# (-fsdev "...,security_model=passthrough,..."), qemu uses a helper
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# application called virtfs-proxy-helper(1) to make certain 9p
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# operations safer.
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qemu_options+=(functionality:--enable-virtfs)
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qemu_options+=(functionality:--enable-attr)
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qemu_options+=(functionality:--enable-cap-ng)
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#---------------------------------------------------------------------
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# Other options
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# 64-bit only
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qemu_options+=(arch:"--target-list=${arch}-softmmu")
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_qemu_cflags=""
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# compile with high level of optimisation
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_qemu_cflags+=" -O3"
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# Improve code quality by assuming identical semantics for interposed
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# synmbols.
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# Only enable if gcc is 5.3 or newer
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if [ "${gcc_version_major}" -ge 5 ] && [ "${gcc_version_minor}" -ge 3 ]; then
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_qemu_cflags+=" -fno-semantic-interposition"
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fi
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# Performance optimisation
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_qemu_cflags+=" -falign-functions=32"
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# SECURITY: make the compiler check for common security issues
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# (such as argument and buffer overflows checks).
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_qemu_cflags+=" -D_FORTIFY_SOURCE=2"
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# SECURITY: Create binary as a Position Independant Executable,
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# and take advantage of ASLR, making ROP attacks much harder to perform.
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# (https://wiki.debian.org/Hardening)
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case "$arch" in
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aarch64) _qemu_cflags+=" -fPIC";;
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x86_64) _qemu_cflags+=" -fPIE";;
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ppc64le) _qemu_cflags+=" -fPIE";;
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esac
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# Set compile options
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qemu_options+=(functionality,security,speed,size:"--extra-cflags=\"${_qemu_cflags}\"")
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unset _qemu_cflags
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_qemu_ldflags=""
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# SECURITY: Link binary as a Position Independant Executable,
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# and take advantage of ASLR, making ROP attacks much harder to perform.
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# (https://wiki.debian.org/Hardening)
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case "$arch" in
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aarch64) ;;
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x86_64) [ -z "${static}" ] && _qemu_ldflags+=" -pie";;
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ppc64le) [ -z "${static}" ] && _qemu_ldflags+=" -pie";;
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esac
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# SECURITY: Disallow executing code on the stack.
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_qemu_ldflags+=" -z noexecstack"
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# SECURITY: Make the linker set some program sections to read-only
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# before the program is run to stop certain attacks.
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_qemu_ldflags+=" -z relro"
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# SECURITY: Make the linker resolve all symbols immediately on program
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# load.
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_qemu_ldflags+=" -z now"
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qemu_options+=(security:"--extra-ldflags=\"${_qemu_ldflags}\"")
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unset _qemu_ldflags
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# Where to install qemu libraries
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qemu_options+=(arch:--libdir=/usr/lib64/${hypervisor})
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# Where to install qemu helper binaries
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qemu_options+=(misc:--libexecdir=/usr/libexec/${hypervisor})
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# Where to install data files
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qemu_options+=(misc:--datadir=/usr/share/${hypervisor})
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}
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# Entry point
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main()
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{
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arch=$(arch)
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# Array of configure options.
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#
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# Each element is comprised of two parts in the form:
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#
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# tags:option
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#
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# Where,
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#
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# - 'tags' is a comma-separated list of values which denote why
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# the option is being specified.
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#
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# - 'option' is the hypervisor configuration option.
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typeset -a qemu_options
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action=""
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while getopts "dhms" opt
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@ -250,187 +460,8 @@ main()
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[ -n "${gcc_version_minor}" ] \
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|| die "cannot determine gcc minor version, please ensure it is installed"
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#---------------------------------------------------------------------
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# Disabled options
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# bluetooth support not required
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qemu_options+=(size:--disable-bluez)
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# braille support not required
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qemu_options+=(size:--disable-brlapi)
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# Don't build documentation
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qemu_options+=(minimal:--disable-docs)
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# Disable GUI (graphics)
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qemu_options+=(size:--disable-curses)
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qemu_options+=(size:--disable-gtk)
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qemu_options+=(size:--disable-opengl)
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qemu_options+=(size:--disable-sdl)
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qemu_options+=(size:--disable-spice)
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qemu_options+=(size:--disable-vte)
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# Disable graphical network access
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qemu_options+=(size:--disable-vnc)
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qemu_options+=(size:--disable-vnc-jpeg)
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qemu_options+=(size:--disable-vnc-png)
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qemu_options+=(size:--disable-vnc-sasl)
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# Disable unused filesystem support
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qemu_options+=(size:--disable-fdt)
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qemu_options+=(size:--disable-glusterfs)
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qemu_options+=(size:--disable-libiscsi)
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qemu_options+=(size:--disable-libnfs)
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qemu_options+=(size:--disable-libssh2)
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# Disable unused compression support
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qemu_options+=(size:--disable-bzip2)
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qemu_options+=(size:--disable-lzo)
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qemu_options+=(size:--disable-snappy)
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# Disable unused security options
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qemu_options+=(security:--disable-seccomp)
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qemu_options+=(security:--disable-tpm)
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# Disable userspace network access ("-net user")
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qemu_options+=(size:--disable-slirp)
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# Disable USB
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qemu_options+=(size:--disable-libusb)
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qemu_options+=(size:--disable-usb-redir)
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# Disable TCG support
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qemu_options+=(size:--disable-tcg)
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# SECURITY: Don't build a static binary (lowers security)
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# needed if qemu version is less than 2.7
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if [ "${qemu_version_major}" -eq 2 ] && [ "${qemu_version_minor}" -lt 7 ]; then
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qemu_options+=(security:--disable-static)
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fi
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if [ "${static}" == "true" ]; then
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qemu_options+=(misc:--static)
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fi
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# Not required as "-uuid ..." is always passed to the qemu binary
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qemu_options+=(size:--disable-uuid)
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# Disable debug
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qemu_options+=(size:--disable-debug-tcg)
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qemu_options+=(size:--disable-qom-cast-debug)
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qemu_options+=(size:--disable-tcg-interpreter)
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qemu_options+=(size:--disable-tcmalloc)
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# Disallow network downloads
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qemu_options+=(security:--disable-curl)
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# Disable Remote Direct Memory Access (Live Migration)
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# https://wiki.qemu.org/index.php/Features/RDMALiveMigration
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qemu_options+=(size:--disable-rdma)
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# Don't build the qemu-io, qemu-nbd and qemu-image tools
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qemu_options+=(size:--disable-tools)
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# Disable XEN driver
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qemu_options+=(size:--disable-xen)
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# FIXME: why is this disabled?
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# (for reference, it's explicitly enabled in Ubuntu 17.10 and
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# implicitly enabled in Fedora 27).
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qemu_options+=(size:--disable-linux-aio)
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#---------------------------------------------------------------------
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# Enabled options
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# Enable kernel Virtual Machine support.
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# This is the default, but be explicit to avoid any future surprises
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qemu_options+=(speed:--enable-kvm)
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# Required for fast network access
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qemu_options+=(speed:--enable-vhost-net)
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# Always strip binaries
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# needed if qemu version is less than 2.7
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if [ "${qemu_version_major}" -eq 2 ] && [ "${qemu_version_minor}" -lt 7 ]; then
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qemu_options+=(size:--enable-strip)
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fi
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# Support Ceph RADOS Block Device (RBD)
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[ -z "${static}" ] && qemu_options+=(functionality:--enable-rbd)
|
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# In "passthrough" security mode
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# (-fsdev "...,security_model=passthrough,..."), qemu uses a helper
|
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# application called virtfs-proxy-helper(1) to make certain 9p
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# operations safer.
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qemu_options+=(functionality:--enable-virtfs)
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qemu_options+=(functionality:--enable-attr)
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qemu_options+=(functionality:--enable-cap-ng)
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#---------------------------------------------------------------------
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# Other options
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# 64-bit only
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[ "$arch" = x86_64 ] && qemu_options+=(arch:"--target-list=${arch}-softmmu")
|
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_qemu_cflags=""
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|
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# compile with high level of optimisation
|
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_qemu_cflags+=" -O3"
|
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|
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# Improve code quality by assuming identical semantics for interposed
|
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# synmbols.
|
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# Only enable if gcc is 5.3 or newer
|
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if [ "${gcc_version_major}" -ge 5 ] && [ "${gcc_version_minor}" -ge 3 ]; then
|
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_qemu_cflags+=" -fno-semantic-interposition"
|
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fi
|
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|
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# Performance optimisation
|
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_qemu_cflags+=" -falign-functions=32"
|
||||
|
||||
# SECURITY: make the compiler check for common security issues
|
||||
# (such as argument and buffer overflows checks).
|
||||
_qemu_cflags+=" -D_FORTIFY_SOURCE=2"
|
||||
|
||||
# SECURITY: Create binary as a Position Independant Executable,
|
||||
# and take advantage of ASLR, making ROP attacks much harder to perform.
|
||||
# (https://wiki.debian.org/Hardening)
|
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_qemu_cflags+=" -fPIE"
|
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|
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# Set compile options
|
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qemu_options+=(functionality,security,speed,size:"--extra-cflags=\"${_qemu_cflags}\"")
|
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|
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unset _qemu_cflags
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|
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_qemu_ldflags=""
|
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|
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# SECURITY: Link binary as a Position Independant Executable,
|
||||
# and take advantage of ASLR, making ROP attacks much harder to perform.
|
||||
# (https://wiki.debian.org/Hardening)
|
||||
[ -z "${static}" ] && _qemu_ldflags+=" -pie"
|
||||
|
||||
# SECURITY: Disallow executing code on the stack.
|
||||
_qemu_ldflags+=" -z noexecstack"
|
||||
|
||||
# SECURITY: Make the linker set some program sections to read-only
|
||||
# before the program is run to stop certain attacks.
|
||||
_qemu_ldflags+=" -z relro"
|
||||
|
||||
# SECURITY: Make the linker resolve all symbols immediately on program
|
||||
# load.
|
||||
_qemu_ldflags+=" -z now"
|
||||
|
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qemu_options+=(security:"--extra-ldflags=\"${_qemu_ldflags}\"")
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|
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unset _qemu_ldflags
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|
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# Where to install qemu libraries
|
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[ "$arch" = x86_64 ] && qemu_options+=(arch:--libdir=/usr/lib64/${hypervisor})
|
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|
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# Where to install qemu helper binaries
|
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qemu_options+=(misc:--libexecdir=/usr/libexec/${hypervisor})
|
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|
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# Where to install data files
|
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qemu_options+=(misc:--datadir=/usr/share/${hypervisor})
|
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# Generate qemu options
|
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generate_qemu_options
|
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|
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show_array "$action" "${qemu_options[@]}"
|
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|
||||
|
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