File: task.yaml

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snapd 2.71-3
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summary: Verify snap debug execution command

details: |
    This test checks that the command `snap debug execution` shows right
    outputs, but also verifies their correctness on the target systems

debug: |
    grep -n '' snap-*.out || true

execute: |
    # TODO: remove this check once snapd 2.65 is released
    if tests.info is-snapd-from-archive; then
        exit 0
    fi

    snap debug execution snap > snap-default.out
    SNAP_REEXEC=0 snap debug execution snap > snap-no-reexec.out
    SNAP_REEXEC=1 snap debug execution snap > snap-yes-reexec.out

    # this may fail when apparmor isn't found at all
    (snap debug execution apparmor || true) > snap-apparmor-default.out
    (SNAP_REEXEC=0 snap debug execution apparmor || true) > snap-apparmor-no-reexec.out

    snap debug execution internal-tool snap-update-ns > snap-uns-default.out

    case "$SPREAD_SYSTEM" in
        ubuntu-core-*)
            echo "Checking Ubuntu Core default scenario"
            MATCH 'distro-supports-reexec: false' < snap-default.out
            MATCH 'is-reexec-enabled: true' < snap-default.out
            MATCH 'is-reexec-explicitly-enabled: false' < snap-default.out
            if os.query is-core16; then
                # snap is part of the core snap
                MATCH 'is-reexecd: false' < snap-default.out
                MATCH 'self-exe: /usr/bin/snap' < snap-default.out
            else
                # UC18+ with snapd snap
                MATCH 'is-reexecd: true' < snap-default.out
                MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-default.out
            fi

            echo "Checking Ubuntu Core with reexec scenario"
            MATCH 'distro-supports-reexec: false' < snap-yes-reexec.out
            MATCH 'is-reexec-enabled: true' < snap-yes-reexec.out
            MATCH 'is-reexec-explicitly-enabled: true' < snap-yes-reexec.out
            MATCH 'is-reexecd: true' < snap-yes-reexec.out
            if os.query is-core16; then
                MATCH 'self-exe: /snap/core/.*/usr/bin/snap' < snap-yes-reexec.out
            else
                MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-yes-reexec.out
            fi

            echo "Checking Ubuntu Core without reexec scenario"
            MATCH 'distro-supports-reexec: false' < snap-no-reexec.out
            MATCH 'is-reexec-explicitly-enabled: false' < snap-no-reexec.out
            if os.query is-core16; then
                MATCH 'is-reexec-enabled: false' < snap-no-reexec.out
                MATCH 'is-reexecd: false' < snap-no-reexec.out
                MATCH 'self-exe: /usr/bin/snap' < snap-no-reexec.out
            else
                MATCH 'is-reexec-enabled: true' < snap-no-reexec.out
                MATCH 'is-reexecd: true' < snap-no-reexec.out
                MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-no-reexec.out
            fi

            echo "Checking Ubuntu Core AppArmor"
            if os.query is-core16; then
                MATCH 'apparmor-parser: /sbin/apparmor_parser' < snap-apparmor-default.out
                MATCH 'internal: false' < snap-apparmor-default.out
            else
                MATCH 'apparmor-parser: /snap/snapd/.*/usr/lib/snapd/apparmor_parser' < snap-apparmor-default.out
                MATCH 'apparmor-parser-command: /snap/snapd/.*/apparmor_parser --config-file /snap/snapd/.*/usr/lib/snapd/apparmor/parser.conf --base /snap/snapd/.*/usr/lib/snapd/apparmor\.d --policy-features /snap/snapd/.*/usr/lib/snapd/apparmor\.d/abi/4\.0' < snap-apparmor-default.out
                MATCH 'internal: true' < snap-apparmor-default.out
            fi
            ;;
        ubuntu-*|debian-*)
            echo "Checking default scenario"
            MATCH 'distro-supports-reexec: true' < snap-default.out
            MATCH 'is-reexec-enabled: true' < snap-default.out
            MATCH 'is-reexec-explicitly-enabled: false' < snap-default.out
            MATCH 'is-reexecd: true' < snap-default.out
            MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-default.out

            echo "Checking without reeexec scenario"
            MATCH 'distro-supports-reexec: true' < snap-no-reexec.out
            MATCH 'is-reexec-enabled: false' < snap-no-reexec.out
            MATCH 'is-reexec-explicitly-enabled: false' < snap-no-reexec.out
            MATCH 'is-reexecd: false' < snap-no-reexec.out
            MATCH 'self-exe: /usr/bin/snap' < snap-no-reexec.out

            echo "Checking AppArmor"
            MATCH 'apparmor-parser: /snap/snapd/.*/usr/lib/snapd/apparmor_parser' < snap-apparmor-default.out
            MATCH 'apparmor-parser-command: /snap/snapd/.*/apparmor_parser --config-file /snap/snapd/.*/usr/lib/snapd/apparmor/parser.conf --base /snap/snapd/.*/usr/lib/snapd/apparmor\.d --policy-features /snap/snapd/.*/usr/lib/snapd/apparmor\.d/abi/4\.0' < snap-apparmor-default.out
            MATCH 'internal: true' < snap-apparmor-default.out

            if os.query is-xenial || os.query is-bionic; then
                # Ubuntu < 20.04 does not have usr-merge
                MATCH 'apparmor-parser: /sbin/apparmor_parser' < snap-apparmor-no-reexec.out
                MATCH 'internal: false' < snap-apparmor-no-reexec.out
            else
                MATCH 'apparmor-parser: /usr/sbin/apparmor_parser' < snap-apparmor-no-reexec.out
                MATCH 'internal: false' < snap-apparmor-no-reexec.out
            fi

            MATCH 'snap-update-ns: /snap/snapd/.*/usr/lib/snapd/snap-update-ns' < snap-uns-default.out
            ;;
        *)
            echo "Checking default scenario"
            MATCH 'distro-supports-reexec: false' < snap-default.out
            MATCH 'is-reexec-enabled: true' < snap-default.out
            MATCH 'is-reexec-explicitly-enabled: false' < snap-default.out
            MATCH 'is-reexecd: false' < snap-default.out
            MATCH 'self-exe: /usr/bin/snap' < snap-default.out

            echo "Checking with reexec scenario"
            MATCH 'distro-supports-reexec: false' < snap-yes-reexec.out
            MATCH 'is-reexec-enabled: true' < snap-yes-reexec.out
            MATCH 'is-reexec-explicitly-enabled: true' < snap-yes-reexec.out
            # actual outcome depends on whether there is a /snap ->
            # /var/lib/snapd/snap symlink on systems where snaps are not mounted
            # under /snap

            # TODO: once snapd snap lands the output wlll be different:
            # MATCH 'is-reexecd: false' < snap-yes-reexec.out
            # MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-yes-reexec.out
            case "$SPREAD_SYSTEM" in
                arch-linux-*|fedora-*|centos-*)
                    # no /snap -> /var/lib/snapd/snap symlink by default
                    MATCH 'is-reexecd: false' < snap-yes-reexec.out
                    MATCH 'self-exe: /usr/bin/snap' < snap-yes-reexec.out
                    ;;
                opensuse-*)
                    # snap mount dir is /snap
                    MATCH 'is-reexecd: true' < snap-yes-reexec.out
                    MATCH 'self-exe: /snap/snapd/.*/usr/bin/snap' < snap-yes-reexec.out
                    ;;
                amazon-linux-*)
                    # has /snap -> /var/lib/snapd symlink
                    MATCH 'is-reexecd: true' < snap-yes-reexec.out
                    MATCH 'self-exe: /var/lib/snapd/snap/snapd/.*/usr/bin/snap' < snap-yes-reexec.out
                    ;;
                *)
                    echo "unexpected distro $SPREAD_SYSTEM"
                    exit 1
                    ;;
            esac

            echo "Checking AppArmor"
            case "$SPREAD_SYSTEM" in
                fedora-*|centos-*|amazon-linux-*)
                    MATCH 'apparmor-parser: error:file does not exist' < snap-apparmor-default.out
                    ;;
                *)
                    MATCH 'apparmor-parser: (/usr)?/sbin/apparmor_parser' < snap-apparmor-default.out
                    ;;
            esac
            MATCH 'internal: false' < snap-apparmor-default.out

            MATCH 'snap-update-ns: /usr/lib(exec)?/snapd/snap-update-ns' < snap-uns-default.out
            ;;
    esac