From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Mon, 15 May 2023 16:57:55 +0000 (+0200)
Subject: test: add a couple of tests for nspawn's OCI stuff
X-Git-Tag: v254-rc1~464^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d5896a949b28d3b7743ee39a412b24d5d858178;p=thirdparty%2Fsystemd.git

test: add a couple of tests for nspawn's OCI stuff
---

diff --git a/test/units/testsuite-13.nspawn-oci.sh b/test/units/testsuite-13.nspawn-oci.sh
new file mode 100755
index 00000000000..cbfdb18290c
--- /dev/null
+++ b/test/units/testsuite-13.nspawn-oci.sh
@@ -0,0 +1,383 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# shellcheck disable=SC2016
+set -eux
+set -o pipefail
+
+export SYSTEMD_LOG_LEVEL=debug
+export SYSTEMD_LOG_TARGET=journal
+CREATE_BB_CONTAINER="/usr/lib/systemd/tests/testdata/create-busybox-container"
+
+# shellcheck disable=SC2317
+at_exit() {
+    set +e
+
+    mountpoint -q /var/lib/machines && umount /var/lib/machines
+    [[ -n "${DEV:-}" ]] && rm -f "$DEV"
+    [[ -n "${NETNS:-}" ]] && umount "$NETNS" && rm -f "$NETNS"
+    [[ -n "${TMPDIR:-}" ]] && rm -fr "$TMPDIR"
+}
+
+trap at_exit EXIT
+
+# Mount tmpfs over /var/lib/machines to not pollute the image
+mkdir -p /var/lib/machines
+mount -t tmpfs tmpfs /var/lib/machines
+
+# Setup a couple of dirs/devices for the OCI containers
+DEV="$(mktemp -u /dev/oci-dev-XXX)"
+mknod -m 666 "$DEV" b 42 42
+NETNS="$(mktemp /var/tmp/netns.XXX)"
+mount --bind /proc/self/ns/net "$NETNS"
+TMPDIR="$(mktemp -d)"
+touch "$TMPDIR/hello"
+OCI="$(mktemp -d /var/lib/machines/testsuite-13.oci-bundle.XXX)"
+"$CREATE_BB_CONTAINER" "$OCI/rootfs"
+mkdir -p "$OCI/rootfs/opt/var"
+mkdir -p "$OCI/rootfs/opt/readonly"
+
+# Let's start with a simple config
+cat >"$OCI/config.json" <<EOF
+{
+    "ociVersion" : "1.0.0",
+    "root" : {
+            "path" : "rootfs"
+    },
+    "mounts" : [
+        {
+            "destination" : "/root",
+            "type" : "tmpfs",
+            "source" : "tmpfs"
+        }
+    ]
+}
+EOF
+systemd-nspawn --oci-bundle="$OCI" sh -xec 'mountpoint /root'
+
+# And now for something a bit more involved
+# Notes:
+#   - the hooks are parsed & processed, but never executed
+#   - set sysctl's are parsed but never used?
+#       - same goes for arg_sysctl in nspawn.c
+cat >"$OCI/config.json" <<EOF
+{
+    "ociVersion" : "1.0.0",
+    "hostname" : "my-oci-container",
+    "root" : {
+            "path" : "rootfs",
+            "readonly" : false
+    },
+    "mounts" : [
+        {
+            "destination" : "/root",
+            "type" : "tmpfs",
+            "source" : "tmpfs"
+        },
+        {
+            "destination" : "/var",
+            "type" : "none",
+            "source" : "$TMPDIR",
+            "options" : ["rbind", "rw"]
+        }
+    ],
+    "process" : {
+        "terminal" : false,
+        "consoleSize" : {
+            "height" : 25,
+            "width" : 80
+        },
+        "user" : {
+            "uid" : 0,
+            "gid" : 0,
+            "additionalGids" : [5, 6]
+        },
+        "env" : [
+            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+            "FOO=bar"
+        ],
+        "cwd" : "/root",
+        "args" : [
+            "sh",
+            "-xe",
+            "/entrypoint.sh"
+        ],
+        "noNewPrivileges" : true,
+        "oomScoreAdj" : 20,
+        "capabilities" : {
+            "bounding" : [
+                "CAP_AUDIT_WRITE",
+                "CAP_KILL",
+                "CAP_NET_BIND_SERVICE"
+            ],
+            "permitted" : [
+                "CAP_AUDIT_WRITE",
+                "CAP_KILL",
+                "CAP_NET_BIND_SERVICE"
+            ],
+            "inheritable" : [
+                "CAP_AUDIT_WRITE",
+                "CAP_KILL",
+                "CAP_NET_BIND_SERVICE"
+            ],
+            "effective" : [
+                "CAP_AUDIT_WRITE",
+                "CAP_KILL"
+            ],
+            "ambient" : [
+                "CAP_NET_BIND_SERVICE"
+            ]
+        },
+        "rlimits" : [
+            {
+                "type" : "RLIMIT_NOFILE",
+                "soft" : 1024,
+                "hard" : 1024
+            },
+            {
+                "type" : "RLIMIT_RTPRIO",
+                "soft" : 5,
+                "hard" : 10
+            }
+        ]
+    },
+    "linux" : {
+        "namespaces" : [
+            {
+                "type" : "mount"
+            },
+            {
+                "type" : "network",
+                "path" : "$NETNS"
+            },
+            {
+                "type" : "pid"
+            },
+            {
+                "type" : "uts"
+            }
+        ],
+        "uidMappings" : [
+            {
+                "containerID" : 0,
+                "hostID" : 1000,
+                "size" : 100
+            }
+        ],
+        "gidMappings" : [
+            {
+                "containerID" : 0,
+                "hostID" : 1000,
+                "size" : 100
+            }
+        ],
+        "devices" : [
+            {
+                "type" : "c",
+                "path" : "/dev/zero",
+                "major" : 1,
+                "minor" : 5,
+                "fileMode" : 444
+            },
+            {
+                "type" : "b",
+                "path" : "$DEV",
+                "major" : 4,
+                "minor" : 2,
+                "fileMode" : 666,
+                "uid" : 0,
+                "gid" : 0
+            }
+        ],
+        "resources" : {
+            "devices" : [
+                {
+                    "allow" : false,
+                    "access" : "m"
+                },
+                {
+                    "allow" : true,
+                    "type" : "b",
+                    "major" : 4,
+                    "minor" : 2,
+                    "access" : "rwm"
+                }
+            ],
+            "memory" : {
+                "limit" : 134217728,
+                "reservation" : 33554432,
+                "swap" : 268435456
+            },
+            "cpu" : {
+                "shares" : 1024,
+                "quota" : 1000000,
+                "period" : 500000,
+                "cpus" : "0-7"
+            },
+            "blockIO" : {
+                "weight" : 10,
+                "weightDevice" : [
+                    {
+                        "major" : 4,
+                        "minor" : 2,
+                        "weight" : 500
+                    }
+                ],
+                "throttleReadBpsDevice" : [
+                    {
+                        "major" : 4,
+                        "minor" : 2,
+                        "rate" : 500
+                    }
+                ],
+                "throttleWriteBpsDevice" : [
+                    {
+                        "major" : 4,
+                        "minor" : 2,
+                        "rate" : 500
+                    }
+                ],
+                "throttleReadIOPSDevice" : [
+                    {
+                        "major" : 4,
+                        "minor" : 2,
+                        "rate" : 500
+                    }
+                ],
+                "throttleWriteIOPSDevice" : [
+                    {
+                        "major" : 4,
+                        "minor" : 2,
+                        "rate" : 500
+                    }
+                ]
+            },
+            "pids" : {
+                "limit" : 1024
+            }
+        },
+        "sysctl" : {
+            "kernel.domainname" : "foo.bar",
+            "vm.swappiness" : "60"
+        },
+        "seccomp" : {
+            "defaultAction" : "SCMP_ACT_ALLOW",
+            "architectures" : [
+                "SCMP_ARCH_ARM",
+                "SCMP_ARCH_X86_64"
+            ],
+            "syscalls" : [
+                {
+                    "names" : [
+                        "lchown",
+                        "chmod"
+                    ],
+                    "action" : "SCMP_ACT_ERRNO",
+                    "args" : [
+                        {
+                            "index" : 0,
+                            "value" : 1,
+                            "op" : "SCMP_CMP_NE"
+                        },
+                        {
+                            "index" : 1,
+                            "value" : 2,
+                            "valueTwo" : 3,
+                            "op" : "SCMP_CMP_MASKED_EQ"
+                        }
+                    ]
+                }
+            ]
+        },
+        "rootfsPropagation" : "shared",
+        "maskedPaths" : [
+            "/proc/kcore",
+            "/root/nonexistent"
+        ],
+        "readonlyPaths" : [
+            "/proc/sys",
+            "/opt/readonly"
+        ]
+    },
+    "hooks" : {
+        "prestart" : [
+            {
+                "path" : "/bin/sh",
+                "args" : [
+                    "-xec",
+                    "echo \$PRESTART_FOO >/prestart"
+                ],
+                "env" : [
+                    "PRESTART_FOO=prestart_bar",
+                    "ALSO_FOO=also_bar"
+                ],
+                "timeout" : 666
+            },
+            {
+                "path" : "/bin/touch",
+                "args" : [
+                    "/tmp/also-prestart"
+                ]
+            }
+        ],
+        "poststart" : [
+            {
+                "path" : "/bin/sh",
+                "args" : [
+                    "touch",
+                    "/poststart"
+                ]
+            }
+        ],
+        "poststop" : [
+            {
+                "path" : "/bin/sh",
+                "args" : [
+                    "touch",
+                    "/poststop"
+                ]
+            }
+        ]
+    },
+    "annotations" : {
+        "hello.world" : "1",
+        "foo" : "bar"
+    }
+}
+EOF
+# Create a simple "entrypoint" script that validates that the container
+# is created correctly according to the OCI config
+cat >"$OCI/rootfs/entrypoint.sh" <<EOF
+#!/bin/sh -e
+
+# Mounts
+mountpoint /root
+mountpoint /var
+test -e /var/hello
+
+# Process
+[[ "\$PWD" == /root ]]
+[[ "\$FOO" == bar ]]
+
+# Process - rlimits
+[[ "\$(ulimit -S -n)" -eq 1024 ]]
+[[ "\$(ulimit -H -n)" -eq 1024 ]]
+[[ "\$(ulimit -S -r)" -eq 5 ]]
+[[ "\$(ulimit -H -r)" -eq 10 ]]
+[[ "\$(hostname)" == my-oci-container ]]
+
+# Linux - devices
+test -c /dev/zero
+test -b "$DEV"
+[[ "\$(stat -c '%t:%T' "$DEV")" == 4:2 ]]
+
+# Linux - maskedPaths
+test -e /proc/kcore
+cat /proc/kcore && exit 1
+test ! -e /root/nonexistent
+
+# Linux - readonlyPaths
+touch /opt/readonly/foo && exit 1
+
+exit 0
+EOF
+systemd-nspawn --oci-bundle="$OCI"
diff --git a/test/units/testsuite-13.nspawn.sh b/test/units/testsuite-13.nspawn.sh
index 76ba143751d..8f8daf05cca 100755
--- a/test/units/testsuite-13.nspawn.sh
+++ b/test/units/testsuite-13.nspawn.sh
@@ -46,7 +46,7 @@ mkdir -p /var/lib/machines
 mount -t tmpfs tmpfs /var/lib/machines
 
 testcase_sanity_check() {
-    local template root image oci uuid tmpdir
+    local template root image uuid tmpdir
 
     tmpdir="$(mktemp -d)"
     template="$(mktemp -d /tmp/nspawn-template.XXX)"
@@ -59,24 +59,6 @@ testcase_sanity_check() {
     mount -o loop "$image" /mnt
     cp -r "$template"/* /mnt/
     umount /mnt
-    # Create a simple OCI bundle
-    oci="$(mktemp -d /var/lib/machines/testsuite-13.oci-bundle.XXX)"
-    "$CREATE_BB_CONTAINER" "$oci/rootfs"
-    cat >"$oci/config.json" <<EOF
-{
-    "ociVersion" : "1.0.0",
-    "root" : {
-            "path" : "rootfs"
-    },
-    "mounts" : [
-        {
-            "destination" : "/root",
-            "type" : "tmpfs",
-            "source" : "tmpfs"
-        }
-    ]
-}
-EOF
 
     systemd-nspawn --help --no-pager
     systemd-nspawn --version
@@ -101,7 +83,6 @@ EOF
                       sh -xec 'touch /nope')
     test ! -e "$root/nope"
     systemd-nspawn --image="$image" sh -xec 'echo hello'
-    systemd-nspawn --oci-bundle="$oci" sh -xec 'mountpoint /root'
 
     # --volatile=
     touch "$root/usr/has-usr"