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name: snapd type: snapd summary: Daemon and tooling that enable snap packages description: | Install, configure, refresh and remove snap packages. Snaps are 'universal' packages that work across many different Linux systems, enabling secure distribution of the latest apps and utilities for cloud, servers, desktops and the internet of things. Start with 'snap list' to see installed snaps. adopt-info: snapd # build-base is needed here for snapcraft to build this snap as with "modern" # snapcraft build-base: core22 package-repositories: - type: apt ppa: snappy-dev/image grade: stable license: GPL-3.0 confinement: strict # Note that this snap is unusual in that it has no "apps" section. # # It is started via re-exec on classic systems and via special # handling in the core18 snap on Ubuntu Core Systems. # # Because snapd itself manages snaps it must currently run totally # unconfined (even devmode is not enough). # # See the comments from jdstrand in # https://forum.snapcraft.io/t/5547/10 # There is no explicit mechanism for passing parameters/configuration through # snapcraft at snap build time, so instead the build process looks for (or # creates) the following stamp files, which influence the build process: # # - test-build - created by the CI (or the in-repo test build script), indicates # a test build with version override to 1337.* # - fips-build - created by the CI or snapd part 'pull' stage to indicate a # build with FIPS support # - fips-build-lp - only created by snapd part 'pull' stage, when the build # environment has been identified to be LP within the FIPS-CC-STIG project, # where the snapd snap recipe is named snapd-fips # parts: dynamic-linker: plugin: nil build-packages: - gawk - bison - quilt - python3-pyelftools source: https://git.launchpad.net/ubuntu/+source/glibc source-branch: ubuntu/jammy-updates source-type: git <<: - &dynamic-linker build-environment: - to amd64: - DYNAMIC_LINKER: ld-linux-x86-64.so.2 - to s390x: - DYNAMIC_LINKER: ld64.so.1 - to arm64: - DYNAMIC_LINKER: ld-linux-aarch64.so.1 - to armhf: - DYNAMIC_LINKER: ld-linux-armhf.so.3 - to riscv64: - DYNAMIC_LINKER: ld-linux-riscv64-lp64d.so.1 - to ppc64el: - DYNAMIC_LINKER: ld64.so.2 override-pull: | craftctl default QUILT_PATCHES=debian/patches quilt push -a patch -p1 <"${CRAFT_PROJECT_DIR}/build-aux/snap/local/rename-dynamic-loader-variables.patch" override-build: | rm -rf build mkdir -p build cd build unset LDFLAGS unset CPPFLAGS export CFLAGS="-pipe -O2 -g" cat <<EOF >configparms libdir=/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR} slibdir=/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR} rtldir=/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR} EOF "${CRAFT_PART_SRC_WORK}/configure" --prefix=/snap/snapd/current/usr make -j"${CRAFT_PARALLEL_BUILD_COUNT}" -C .. objdir="${PWD}" "${PWD}/linkobj/libc_pic.a" make elf/ldso_install DESTDIR="${CRAFT_PART_INSTALL}" strip "${CRAFT_PART_INSTALL}/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" install -Dm755 -t "${CRAFT_PART_INSTALL}/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}" "${CRAFT_PART_INSTALL}/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" stage: - usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR/ld*.so* runtime: plugin: nil stage-packages: - libblkid1 - libbrotli1 - libc6 - libcap2 - libexpat1 - libfreetype6 - libgcc-s1 - liblz4-1 - liblzma5 - liblzo2-2 - libpng16-16 - libseccomp2 - libudev1 - libzstd1 - squashfs-tools - xdelta3 - zlib1g - on armhf: - libteec1 - on arm64: - libteec1 stage: - -usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR/ld*.so* - -lib32 - -lib64 - -usr/lib32 - -usr/lib64 - -etc/ld.so.conf.d - -usr/share/man - -usr/share/lintian - -usr/share/lintian/** - -usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR/libnss_*.so.2 override-build: | craftctl default cp -avT "${CRAFT_PART_INSTALL}/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}" "${CRAFT_PART_INSTALL}/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}" rm -rf "${CRAFT_PART_INSTALL}/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}" rm -f "${CRAFT_PART_INSTALL}/lib/${DYNAMIC_LINKER}" find "${CRAFT_PART_INSTALL}/usr/share/doc" \( -not -type d -not -name "copyright" -delete \) -o \( -type d -empty -delete \) <<: - *dynamic-linker # FIXME: uncomment when https://bugs.launchpad.net/snapcraft/+bug/2097440 is fixed # override-prime: | # craftctl default # python3 "${CRAFT_PROJECT_DIR}/build-aux/snap/local/patch-dl.py" "/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" # FIXME: remove when https://bugs.launchpad.net/snapcraft/+bug/2097440 is fixed prime-runtime: plugin: nil after: - runtime <<: - *dynamic-linker override-prime: | craftctl default CRAFT_PART_INSTALL="${CRAFT_PART_INSTALL}/../../runtime/install" \ python3 "${CRAFT_PROJECT_DIR}/build-aux/snap/local/patch-dl.py" "/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" apparmor: plugin: autotools build-packages: - autoconf-archive - bison - flex - gettext - g++ - pkg-config - wget source: https://gitlab.com/apparmor/apparmor/-/archive/v4.0.2/apparmor-v4.0.2.tar.gz source-checksum: sha256/0b847751b8c0e2344169ec2065cad6251063c5c5ff311953e194bbf25686d981 override-build: | # For some reason, some snapcraft version remove the "build-aux" folder # and move the contents up when the data is uploaded; this conditional # manages it. LOCAL_APPARMOR_DIR="${CRAFT_PROJECT_DIR}"/build-aux/snap/local/apparmor/ if [ ! -d $LOCAL_APPARMOR_DIR ]; then LOCAL_APPARMOR_DIR="${CRAFT_PROJECT_DIR}"/snap/local/apparmor/ fi # apply prompting patch from the build-aux folder - this is the same as # what is used in the Ubuntu 24.10 (oracular) version patch -p1 < "${LOCAL_APPARMOR_DIR}"/parser-add-support-for-prompting.patch # apply compatibility fix for older kernels patch -p1 < "${LOCAL_APPARMOR_DIR}"/apparmor-parser-fix-protocol-error-on-older-kernels-caused-by.patch cd "${CRAFT_PART_BUILD}"/libraries/libapparmor ./autogen.sh ./configure --prefix=/usr --libdir="/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}" --disable-man-pages --disable-perl --disable-python --disable-ruby make -j"${CRAFT_PARALLEL_BUILD_COUNT}" make -C src install DESTDIR="${CRAFT_PART_INSTALL}" make -C include install DESTDIR="${CRAFT_PART_INSTALL}" cd ${CRAFT_PART_BUILD}/parser # copy in a pregenerated list of network address families so that the # parser gets built to support as many as possible even if glibc in # the current build environment does not support them cp -a "${LOCAL_APPARMOR_DIR}"/af_names.h . make -j"${CRAFT_PARALLEL_BUILD_COUNT}" install -Dm755 -t "${CRAFT_PART_INSTALL}/usr/lib/snapd" apparmor_parser install -Dm644 -t "${CRAFT_PART_INSTALL}/usr/lib/snapd/apparmor" parser.conf cd "${CRAFT_PART_BUILD}/profiles" make -j"${CRAFT_PARALLEL_BUILD_COUNT}" mkdir -p "${CRAFT_PART_INSTALL}/usr/lib/snapd/apparmor.d" cp -a apparmor.d/abi "${CRAFT_PART_INSTALL}/usr/lib/snapd/apparmor.d" cp -a apparmor.d/abstractions "${CRAFT_PART_INSTALL}/usr/lib/snapd/apparmor.d" cp -a apparmor.d/tunables "${CRAFT_PART_INSTALL}/usr/lib/snapd/apparmor.d" prime: # We are statically linked - -usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR/** - -usr/include <<: - *dynamic-linker override-prime: | craftctl default python3 "${CRAFT_PROJECT_DIR}/build-aux/snap/local/patch-dl.py" "/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" patchelf: plugin: autotools build-packages: - autoconf-archive # as of 0.18.0-1.1build1 in Oracular, here are no relevant patches to apply source: http://archive.ubuntu.com/ubuntu/pool/universe/p/patchelf/patchelf_0.18.0.orig.tar.gz source-checksum: sha256/1451d01ee3a21100340aed867d0b799f46f0b1749680028d38c3f5d0128fb8a7 # nothing to prime prime: [-*] snapd: plugin: nil source: . build-snaps: - go/1.23/stable # the default Go toolchain after: - apparmor - patchelf build-packages: - git - dpkg-dev - autoconf - autoconf-archive - automake - xfslibs-dev - libblkid-dev - libudev-dev - libcap-dev - libseccomp-dev - libselinux1-dev - pkg-config - libcap2-bin - on armhf: - optee-client-dev - on arm64: - optee-client-dev override-pull: | craftctl default # set version, this needs dpkg-parsechangelog (from dpkg-dev) and git VERSION="$(./mkversion.sh --output-only)" if [ -f fips-build ]; then # CI can set a build stamp for enabling the FIPS build mode echo "-- detected FIPS build from CI build stamp" fi if [ "${VERSION/+fips/}" != "$VERSION" ] ; then # we have a '+fips' element in the version, which may be coming from # debian/changelog or git tag echo "-- detected FIPS build from version $VERSION" touch fips-build fi # check for triggers that indicate a build on LP of the snapd-fips snap # recipe https://launchpad.net/~fips-cc-stig/fips-cc-stig/+snap/snapd-fips is_lp_fips_build="$(./release-tools/is-lp-fips-build.sh)" if [ "$is_lp_fips_build" = "true" ]; then echo "-- detected FIPS build from LP location" touch fips-build touch fips-build-lp fi if [ -f fips-build ]; then if [ "${VERSION/+fips/}" = "$VERSION" ] ; then # we have a fips-build marker, but fips tag isn't yet part of the # snap version, let's add it echo "-- appending FIPS tag to version $VERSION" VERSION="$VERSION+fips" fi fi if [ -f test-build ]; then VERSION="1337.${VERSION}" fi craftctl set version="$VERSION" ./get-deps.sh --skip-unused-check override-build: | # this should be passed through build environment, but we're already # anchoring dynamic linker env variables GO_TOOLCHAIN_FIPS_CHANNEL="1.21-fips/stable" VERSION="$(craftctl get version)" if [ -f fips-build ] ; then # use the fips channel of Go snap refresh --channel "$GO_TOOLCHAIN_FIPS_CHANNEL" go # make sure it is really the Go FIPS toolchain if ! test -f /snap/go/current/src/crypto/internal/backend/openssl_linux.go; then echo "Go FIPS toolschain verification failed: cannot find /snap/go/current/src/crypto/internal/backend/openssl_linux.go" exit 1 fi fi # make sure to set the version we declared in pull ./mkversion.sh "$VERSION" # double check the toolchain echo "--- go version $(go version)" echo "--- go is at $(which go)" cd "${CRAFT_PART_BUILD}/cmd" autoreconf -fvi ./configure \ --prefix=/usr \ --libexec=/usr/lib/snapd \ --sysconfdir=/etc \ --localstatedir=/var \ --without-unit-tests \ --enable-apparmor \ --enable-static-libapparmor \ --enable-selinux \ --enable-static-libselinux \ --disable-host-binaries \ --enable-nvidia-multiarch \ --with-host-arch-triplet=$(dpkg-architecture -qDEB_HOST_MULTIARCH) \ $(test "$(uname -m)" = x86_64 && echo --with-host-arch-32bit-triplet=$(dpkg-architecture -ai386 -qDEB_HOST_MULTIARCH)) make -j"${CRAFT_PARALLEL_BUILD_COUNT}" make DESTDIR="${CRAFT_PART_INSTALL}" install cd "${CRAFT_PART_BUILD}" # Disable buildvcs: # * We do not use it # * When building in a git worktree, snapcraft does not share # the main directory, and it fails. EXTRA_GO_FLAGS="-buildvcs=false" CMDS=(bin/snap lib/snapd/snapd # core-initrd for UC20 still depends on snap-bootstrap # being started from snap because of broken re-execution # and fixes that were not yet backported lib/snapd/snap-bootstrap lib/snapd/snap-exec lib/snapd/snap-failure lib/snapd/snap-fde-keymgr lib/snapd/snap-preseed lib/snapd/snap-recovery-chooser lib/snapd/snap-repair lib/snapd/snap-seccomp lib/snapd/snap-update-ns lib/snapd/snapctl lib/snapd/snapd-apparmor lib/snapd/snap-gpio-helper) for cmd in "${CMDS[@]}"; do case "${cmd}" in # FIXME: some binaries need to be run confined in apps. But # instead we should allow apps to access dynamic linkers # and libraries from snapd. lib/snapd/snap-exec|lib/snapd/snapctl) export CGO_ENABLED=0 GO_LD_FLAGS=() CHECK_STATIC=1 ;; lib/snapd/snap-update-ns) export CGO_ENABLED=1 GO_LD_FLAGS=(-ldflags '-extldflags "-static"') CHECK_STATIC=1 ;; *) export CGO_ENABLED=1 GO_LD_FLAGS=() case "${CRAFT_ARCH_BUILD_FOR}" in arm64|armhf) GO_LD_FLAGS+=(-ldflags "-extldflags \"-L/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}"\") ;; esac case "${CRAFT_ARCH_BUILD_FOR}" in armhf) # https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1822738 ;; *) GO_LD_FLAGS+=(-buildmode=pie) ;; esac unset CHECK_STATIC ;; esac TAGS=(snapdusergo osusergo) # general build tags, note that version 1337 is used only in CI and # triggers testing specific build tags which produce binaries that are # insecure for use in production systems case "${cmd}" in bin/snap) TAGS+=(nomanagers) ;; lib/snapd/snap-bootstrap) TAGS+=(nomanagers) case "${CRAFT_ARCH_BUILD_FOR}" in arm64|armhf) TAGS+=(withoptee) ;; esac ;; lib/snapd/snapd) case "${CRAFT_ARCH_BUILD_FOR}" in arm64|armhf) TAGS+=(withoptee) ;; esac ;; esac case "${VERSION}" in 1337.*) case "${cmd}" in bin/snap) TAGS+=(withtestkeys faultinject statelocktrace structuredlogging) ;; *) TAGS+=(withtestkeys withbootassetstesting faultinject statelocktrace structuredlogging) ;; esac ;; esac # FIPS specific build tags if [ -f fips-build ]; then case "${cmd}" in # per snapd FIPS spec, FIPS build tags are only relevant for snapd, # snap, snap-repair and snap-bootstrap, tags: # - goexperiment.opensslcrypto - enable openssl crypto backend # - snapdfips - enable additional FIPS support (enforce FIPS compliant TLS) bin/snap|lib/snapd/snapd|lib/snapd/snap-repair|lib/snapd/snap-bootstrap) TAGS+=(goexperiment.opensslcrypto snapdfips) ;; esac fi output="${CRAFT_PART_INSTALL}/usr/${cmd}" go build -mod=vendor -tags "${TAGS[*]}" "${GO_LD_FLAGS[@]}" ${EXTRA_GO_FLAGS-} -o "${output}" "github.com/snapcore/snapd/cmd/$(basename ${cmd})" if [ "${CHECK_STATIC-}" = 1 ]; then if objdump -p "${output}" | grep INTERP; then echo "${output} is not static!" 1>&2 exit 1 fi fi unset CGO_ENABLED done make -C data -j"${CRAFT_PARALLEL_BUILD_COUNT}" all # wrappers/core18.go expects units in fixed paths so even when # systemd package will those, they have to continue to match our # paths. We force the value here in case we change the default. make -C data install DESTDIR="${CRAFT_PART_INSTALL}" SYSTEMDUSERUNITDIR=/usr/lib/systemd/user SYSTEMDSYSTEMUNITDIR=/lib/systemd/system # UC depends on this name (symlink) mv "${CRAFT_PART_INSTALL}/etc/profile.d/snapd.sh" "${CRAFT_PART_INSTALL}/etc/profile.d/apps-bin-path.sh" install -Dm644 data/info "${CRAFT_PART_INSTALL}/usr/lib/snapd/info" install -Dm644 data/preseed.json "${CRAFT_PART_INSTALL}/usr/lib/snapd/preseed.json" install -Dm644 -t "${CRAFT_PART_INSTALL}/usr/lib/snapd" data/completion/bash/complete.sh data/completion/bash/etelpmoc.sh install -Dm644 -t "${CRAFT_PART_INSTALL}/usr/share/bash-completion/completions" ./data/completion/bash/snap # TODO: For now snapd expects a renamed apparmor profile to # work-around LP#1673247. We should fix that since the snapd # should not need that work-around. mv "${CRAFT_PART_INSTALL}/etc/apparmor.d/usr.lib.snapd.snap-confine" "${CRAFT_PART_INSTALL}/etc/apparmor.d/usr.lib.snapd.snap-confine.real" # copy helper for collecting debug output cp -av debug-tools/snap-debug-info.sh ${CRAFT_PART_INSTALL}/usr/lib/snapd/ if sh -x ./mkversion.sh --output-only | grep "dirty"; then mkdir -p "${CRAFT_PART_INSTALL}/usr/lib/snapd" ( echo "dirty git tree during build detected:" git status git diff ) > "${CRAFT_PART_INSTALL}/usr/lib/snapd/dirty-git-tree-info.txt" fi find "${CRAFT_PART_INSTALL}/usr/lib/snapd" "${CRAFT_PART_INSTALL}/usr/bin" -type f -exec strip {} ";" if [ -f fips-build ]; then touch "${CRAFT_PART_INSTALL}/fips-build" fi if [ -f fips-build-lp ]; then touch "${CRAFT_PART_INSTALL}/fips-build-lp" fi # ensure capabilities are set setcap -q - "${CRAFT_PART_INSTALL}/usr/lib/snapd/snap-confine" \ < "${CRAFT_PART_INSTALL}/usr/lib/snapd/snap-confine.caps" getcap "${CRAFT_PART_INSTALL}/usr/lib/snapd/snap-confine" <<: - *dynamic-linker prime: # drop FIPS build stamps - -fips-build - -fips-build-lp override-prime: | craftctl default # use patchelf built in earlier step PATH="${CRAFT_STAGE}"/usr/local/bin:$PATH \ "${CRAFT_PROJECT_DIR}/build-aux/snap/local/patch-dl.py" \ "/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}" # verify file capabilities caps="$(getcap "${CRAFT_PART_INSTALL}/usr/lib/snapd/snap-confine" | awk '{print $2}')" expected_caps="$(cat "${CRAFT_PART_INSTALL}/usr/lib/snapd/snap-confine.caps")" echo "-- expecting caps: $expected_caps" echo "-- actual caps: $caps" test "$caps" = "$expected_caps" libcrypto-fips: plugin: nil after: - snapd override-build: | # XXX this should be done in pull, but apparently ordering is not honored # for 'pull' step of parts # FIPS stamp files were created in the 'snap' part build if [ -f "${CRAFT_STAGE}/fips-build-lp" ]; then mkdir -p etc/apt/preferences.d/ # need to up the priority of the repository # TODO what if we need to choose between FIPS and FIPS preview? cat <<-'EOF' > /etc/apt/preferences.d/fips.pref Package: * Pin: release o=LP-PPA-ubuntu-advantage-pro-fips-updates Pin-Priority: 1010 EOF apt update # FIPS libraries required by snapd mkdir fips-debs ( cd fips-debs apt download openssl libssl3 openssl-fips-module-3 ) elif [ -f "${CRAFT_STAGE}/fips-build" ]; then # grab the core22 from fips-updates channel snap download --channel fips-updates/stable --basename core22-fips core22 fi # TODO this is really a hack as we should likely be using on LP; The snapd # snap should include the information about a particular openssl version # which was included in the build but the core22 FIPS variant snap has # been stripped off of the manifest. if [ -f "${CRAFT_STAGE}/fips-build-lp" ]; then mkdir fips-libs-from-debs mkdir fips-libs-from-debs-stage # extract for f in fips-debs/*.deb; do dpkg -x "$f" fips-libs-from-debs done # and cherry pick the files we want ( cd fips-libs-from-debs # XXX note with -print0 only the last match is printed find . \ \( \ -wholename './usr/lib/*-linux-gnu*/engines-3' \ -o -wholename './usr/lib/*-linux-gnu*/ossl-modules-3' \ -o -wholename './usr/lib/*-linux-gnu*/libssl.so.3' \ -o -wholename './usr/lib/*-linux-gnu*/libcrypto.so.3' \ \) -print0 | \ xargs -0 -- cp -av --parents --target ../fips-libs-from-debs-stage/ ) cp -av fips-libs-from-debs-stage/* "${CRAFT_PART_INSTALL}" elif [ -f "${CRAFT_STAGE}/fips-build" ]; then unsquashfs -d core22-fips-squashfs-root core22-fips.snap \ 'usr/lib/*-linux-gnu*/engines-3' \ 'usr/lib/*-linux-gnu*/ossl-modules-3' \ 'usr/lib/*-linux-gnu*/libssl.so.3' \ 'usr/lib/*-linux-gnu*/libcrypto.so.3' cp -av core22-fips-squashfs-root/* "${CRAFT_PART_INSTALL}" fi find "${CRAFT_PART_INSTALL}/" -ls check-linker: plugin: nil build-packages: - patchelf after: # Must run after everything else - snapd - runtime - prime-runtime - apparmor - dynamic-linker <<: - *dynamic-linker override-prime: | craftctl default "${CRAFT_PROJECT_DIR}/build-aux/snap/local/verify-dl.py" \ "/snap/snapd/current/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/${DYNAMIC_LINKER}"