github.com/rish1988/moby@v25.0.2+incompatible/daemon/daemon_linux_test.go (about) 1 //go:build linux 2 3 package daemon // import "github.com/docker/docker/daemon" 4 5 import ( 6 "net" 7 "os" 8 "path/filepath" 9 "strings" 10 "testing" 11 12 containertypes "github.com/docker/docker/api/types/container" 13 "github.com/docker/docker/internal/testutils/netnsutils" 14 "github.com/docker/docker/libnetwork/types" 15 "github.com/google/go-cmp/cmp/cmpopts" 16 "github.com/moby/sys/mount" 17 "github.com/moby/sys/mountinfo" 18 "github.com/vishvananda/netlink" 19 "gotest.tools/v3/assert" 20 is "gotest.tools/v3/assert/cmp" 21 ) 22 23 const mountsFixture = `142 78 0:38 / / rw,relatime - aufs none rw,si=573b861da0b3a05b,dio 24 143 142 0:60 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw 25 144 142 0:67 / /dev rw,nosuid - tmpfs tmpfs rw,mode=755 26 145 144 0:78 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666 27 146 144 0:49 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw 28 147 142 0:84 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw 29 148 147 0:86 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755 30 149 148 0:22 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset 31 150 148 0:25 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpu rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu 32 151 148 0:27 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuacct 33 152 148 0:28 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory 34 153 148 0:29 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices 35 154 148 0:30 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer 36 155 148 0:31 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio 37 156 148 0:32 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,perf_event 38 157 148 0:33 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,hugetlb 39 158 148 0:35 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup systemd rw,name=systemd 40 159 142 8:4 /home/mlaventure/gopath /home/mlaventure/gopath rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 41 160 142 8:4 /var/lib/docker/volumes/9a428b651ee4c538130143cad8d87f603a4bf31b928afe7ff3ecd65480692b35/_data /var/lib/docker rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 42 164 142 8:4 /home/mlaventure/gopath/src/github.com/docker/docker /go/src/github.com/docker/docker rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 43 165 142 8:4 /var/lib/docker/containers/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a/resolv.conf /etc/resolv.conf rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 44 166 142 8:4 /var/lib/docker/containers/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a/hostname /etc/hostname rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 45 167 142 8:4 /var/lib/docker/containers/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a/hosts /etc/hosts rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 46 168 144 0:39 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k 47 169 144 0:12 /14 /dev/console rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000 48 83 147 0:10 / /sys/kernel/security rw,relatime - securityfs none rw 49 89 142 0:87 / /tmp rw,relatime - tmpfs none rw 50 97 142 0:60 / /run/docker/netns/default rw,nosuid,nodev,noexec,relatime - proc proc rw 51 100 160 8:4 /var/lib/docker/volumes/9a428b651ee4c538130143cad8d87f603a4bf31b928afe7ff3ecd65480692b35/_data/aufs /var/lib/docker/aufs rw,relatime - ext4 /dev/disk/by-uuid/d99e196c-1fc4-4b4f-bab9-9962b2b34e99 rw,errors=remount-ro,data=ordered 52 115 100 0:102 / /var/lib/docker/aufs/mnt/0ecda1c63e5b58b3d89ff380bf646c95cc980252cf0b52466d43619aec7c8432 rw,relatime - aufs none rw,si=573b861dbc01905b,dio 53 116 160 0:107 / /var/lib/docker/containers/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k 54 118 142 0:102 / /run/docker/libcontainerd/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/rootfs rw,relatime - aufs none rw,si=573b861dbc01905b,dio 55 242 142 0:60 / /run/docker/netns/c3664df2a0f7 rw,nosuid,nodev,noexec,relatime - proc proc rw 56 120 100 0:122 / /var/lib/docker/aufs/mnt/03ca4b49e71f1e49a41108829f4d5c70ac95934526e2af8984a1f65f1de0715d rw,relatime - aufs none rw,si=573b861eb147805b,dio 57 171 142 0:122 / /run/docker/libcontainerd/e406ff6f3e18516d50e03dbca4de54767a69a403a6f7ec1edc2762812824521e/rootfs rw,relatime - aufs none rw,si=573b861eb147805b,dio 58 310 142 0:60 / /run/docker/netns/71a18572176b rw,nosuid,nodev,noexec,relatime - proc proc rw 59 ` 60 61 const mountsFixtureOverlay2 = `23 28 0:22 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw 62 24 28 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:13 - proc proc rw 63 25 28 0:6 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=491380k,nr_inodes=122845,mode=755 64 26 25 0:23 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000 65 27 28 0:24 / /run rw,nosuid,noexec,relatime shared:5 - tmpfs tmpfs rw,size=100884k,mode=755 66 28 0 252:1 / / rw,relatime shared:1 - ext4 /dev/vda1 rw,data=ordered 67 29 23 0:7 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw 68 30 25 0:25 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw 69 31 27 0:26 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k 70 32 23 0:27 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755 71 33 32 0:28 / /sys/fs/cgroup/unified rw,nosuid,nodev,noexec,relatime shared:10 - cgroup2 cgroup rw 72 34 32 0:29 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:11 - cgroup cgroup rw,xattr,name=systemd 73 35 23 0:30 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:12 - pstore pstore rw 74 36 32 0:31 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,blkio 75 37 32 0:32 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,memory 76 38 32 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,hugetlb 77 39 32 0:34 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,freezer 78 40 32 0:35 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event 79 41 32 0:36 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,pids 80 42 32 0:37 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpuset 81 43 32 0:38 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,cpu,cpuacct 82 44 32 0:39 / /sys/fs/cgroup/rdma rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,rdma 83 45 32 0:40 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:23 - cgroup cgroup rw,devices 84 46 32 0:41 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:24 - cgroup cgroup rw,net_cls,net_prio 85 47 24 0:42 / /proc/sys/fs/binfmt_misc rw,relatime shared:25 - autofs systemd-1 rw,fd=33,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=11725 86 48 23 0:8 / /sys/kernel/debug rw,relatime shared:26 - debugfs debugfs rw 87 49 25 0:19 / /dev/mqueue rw,relatime shared:27 - mqueue mqueue rw 88 50 25 0:43 / /dev/hugepages rw,relatime shared:28 - hugetlbfs hugetlbfs rw,pagesize=2M 89 80 23 0:20 / /sys/kernel/config rw,relatime shared:29 - configfs configfs rw 90 82 23 0:44 / /sys/fs/fuse/connections rw,relatime shared:30 - fusectl fusectl rw 91 84 28 252:15 / /boot/efi rw,relatime shared:31 - vfat /dev/vda15 rw,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 92 391 28 0:49 / /var/lib/lxcfs rw,nosuid,nodev,relatime shared:208 - fuse.lxcfs lxcfs rw,user_id=0,group_id=0,allow_other 93 401 48 0:11 / /sys/kernel/debug/tracing rw,relatime shared:213 - tracefs tracefs rw 94 421 47 0:93 / /proc/sys/fs/binfmt_misc rw,relatime shared:223 - binfmt_misc binfmt_misc rw 95 510 27 0:3 net:[4026531993] /run/docker/netns/default rw shared:255 - nsfs nsfs rw 96 60 27 0:3 net:[4026532265] /run/docker/netns/ingress_sbox rw shared:40 - nsfs nsfs rw 97 162 27 0:3 net:[4026532331] /run/docker/netns/1-bj0aarwy1n rw shared:41 - nsfs nsfs rw 98 450 28 0:51 / /var/lib/docker/overlay2/3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67/merged rw,relatime shared:231 - overlay overlay rw,lowerdir=/var/lib/docker/overlay2/l/E6KNVZ2QUCIXY5VT7E5LO3PVCA:/var/lib/docker/overlay2/l/64XI57TRGG6QS4K6DCSREZXBN2:/var/lib/docker/overlay2/l/TWXZ4ANJR6BDLDZMWZ4Y6AICAR:/var/lib/docker/overlay2/l/VRLSNSG3PKZELC5O66TVTQ7EH5:/var/lib/docker/overlay2/l/HOLV4F57X56TRLVACMRLFVW7YD:/var/lib/docker/overlay2/l/JJQFBBBT6LWLQS35XBADV6BLAM:/var/lib/docker/overlay2/l/FZTPKHZGP2Z6DBPFEEL2IK3I5Y,upperdir=/var/lib/docker/overlay2/3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67/diff,workdir=/var/lib/docker/overlay2/3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67/work 99 569 27 0:3 net:[4026532353] /run/docker/netns/7de1071d0d8b rw shared:245 - nsfs nsfs rw 100 245 27 0:50 / /run/user/0 rw,nosuid,nodev,relatime shared:160 - tmpfs tmpfs rw,size=100880k,mode=700 101 482 28 0:69 / /var/lib/docker/overlay2/df4ee7b0bac7bda30e6e3d24a1153b288ebda50ffe68aae7ae0f38bc9286a01a/merged rw,relatime shared:250 - overlay overlay rw,lowerdir=/var/lib/docker/overlay2/l/CNZ3ATGGHMUTPPJBBU2OL4GLL6:/var/lib/docker/overlay2/l/64XI57TRGG6QS4K6DCSREZXBN2:/var/lib/docker/overlay2/l/TWXZ4ANJR6BDLDZMWZ4Y6AICAR:/var/lib/docker/overlay2/l/VRLSNSG3PKZELC5O66TVTQ7EH5:/var/lib/docker/overlay2/l/HOLV4F57X56TRLVACMRLFVW7YD:/var/lib/docker/overlay2/l/JJQFBBBT6LWLQS35XBADV6BLAM:/var/lib/docker/overlay2/l/FZTPKHZGP2Z6DBPFEEL2IK3I5Y,upperdir=/var/lib/docker/overlay2/df4ee7b0bac7bda30e6e3d24a1153b288ebda50ffe68aae7ae0f38bc9286a01a/diff,workdir=/var/lib/docker/overlay2/df4ee7b0bac7bda30e6e3d24a1153b288ebda50ffe68aae7ae0f38bc9286a01a/work 102 528 28 0:77 / /var/lib/docker/containers/404a7f860e600bfc144f7b5d9140d80bf3072fbb97659f98bc47039fd73d2695/mounts/shm rw,nosuid,nodev,noexec,relatime shared:260 - tmpfs shm rw,size=65536k 103 649 27 0:3 net:[4026532429] /run/docker/netns/7f85bc5ef3ba rw shared:265 - nsfs nsfs rw 104 ` 105 106 func TestCleanupMounts(t *testing.T) { 107 d := &Daemon{ 108 root: "/var/lib/docker/", 109 } 110 111 t.Run("aufs", func(t *testing.T) { 112 expected := "/var/lib/docker/containers/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/shm" 113 var unmounted int 114 unmount := func(target string) error { 115 if target == expected { 116 unmounted++ 117 } 118 return nil 119 } 120 121 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixture), "", unmount) 122 assert.NilError(t, err) 123 assert.Equal(t, unmounted, 1, "Expected to unmount the shm (and the shm only)") 124 }) 125 126 t.Run("overlay2", func(t *testing.T) { 127 expected := "/var/lib/docker/containers/404a7f860e600bfc144f7b5d9140d80bf3072fbb97659f98bc47039fd73d2695/mounts/shm" 128 var unmounted int 129 unmount := func(target string) error { 130 if target == expected { 131 unmounted++ 132 } 133 return nil 134 } 135 136 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixtureOverlay2), "", unmount) 137 assert.NilError(t, err) 138 assert.Equal(t, unmounted, 1, "Expected to unmount the shm (and the shm only)") 139 }) 140 } 141 142 func TestCleanupMountsByID(t *testing.T) { 143 d := &Daemon{ 144 root: "/var/lib/docker/", 145 } 146 t.Run("overlay2", func(t *testing.T) { 147 expected := "/var/lib/docker/overlay2/3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67/merged" 148 var unmounted int 149 unmount := func(target string) error { 150 if target == expected { 151 unmounted++ 152 } 153 return nil 154 } 155 156 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixtureOverlay2), "3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67", unmount) 157 assert.NilError(t, err) 158 assert.Equal(t, unmounted, 1, "Expected to unmount the root (and that only)") 159 }) 160 } 161 162 func TestNotCleanupMounts(t *testing.T) { 163 d := &Daemon{ 164 repository: "", 165 } 166 var unmounted bool 167 unmount := func(target string) error { 168 unmounted = true 169 return nil 170 } 171 mountInfo := `234 232 0:59 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k` 172 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountInfo), "", unmount) 173 assert.NilError(t, err) 174 assert.Equal(t, unmounted, false, "Expected not to clean up /dev/shm") 175 } 176 177 func TestValidateContainerIsolationLinux(t *testing.T) { 178 d := Daemon{} 179 180 _, err := d.verifyContainerSettings(&configStore{}, &containertypes.HostConfig{Isolation: containertypes.IsolationHyperV}, nil, false) 181 assert.Check(t, is.Error(err, "invalid isolation 'hyperv' on linux")) 182 } 183 184 func TestShouldUnmountRoot(t *testing.T) { 185 for _, test := range []struct { 186 desc string 187 root string 188 info *mountinfo.Info 189 expect bool 190 }{ 191 { 192 desc: "root is at /", 193 root: "/docker", 194 info: &mountinfo.Info{Root: "/docker", Mountpoint: "/docker"}, 195 expect: true, 196 }, 197 { 198 desc: "root is at in a submount from `/`", 199 root: "/foo/docker", 200 info: &mountinfo.Info{Root: "/docker", Mountpoint: "/foo/docker"}, 201 expect: true, 202 }, 203 { 204 desc: "root is mounted in from a parent mount namespace same root dir", // dind is an example of this 205 root: "/docker", 206 info: &mountinfo.Info{Root: "/docker/volumes/1234657/_data", Mountpoint: "/docker"}, 207 expect: false, 208 }, 209 } { 210 t.Run(test.desc, func(t *testing.T) { 211 for _, options := range []struct { 212 desc string 213 Optional string 214 expect bool 215 }{ 216 {desc: "shared", Optional: "shared:", expect: true}, 217 {desc: "slave", Optional: "slave:", expect: false}, 218 {desc: "private", Optional: "private:", expect: false}, 219 } { 220 t.Run(options.desc, func(t *testing.T) { 221 expect := options.expect 222 if expect { 223 expect = test.expect 224 } 225 if test.info != nil { 226 test.info.Optional = options.Optional 227 } 228 assert.Check(t, is.Equal(expect, shouldUnmountRoot(test.root, test.info))) 229 }) 230 } 231 }) 232 } 233 } 234 235 func checkMounted(t *testing.T, p string, expect bool) { 236 t.Helper() 237 mounted, err := mountinfo.Mounted(p) 238 assert.Check(t, err) 239 assert.Check(t, mounted == expect, "expected %v, actual %v", expect, mounted) 240 } 241 242 func TestRootMountCleanup(t *testing.T) { 243 if os.Getuid() != 0 { 244 t.Skip("root required") 245 } 246 247 t.Parallel() 248 249 testRoot, err := os.MkdirTemp("", t.Name()) 250 assert.NilError(t, err) 251 defer os.RemoveAll(testRoot) 252 cfg := &configStore{} 253 254 err = mount.MakePrivate(testRoot) 255 assert.NilError(t, err) 256 defer mount.Unmount(testRoot) 257 258 cfg.ExecRoot = filepath.Join(testRoot, "exec") 259 cfg.Root = filepath.Join(testRoot, "daemon") 260 261 err = os.Mkdir(cfg.ExecRoot, 0o755) 262 assert.NilError(t, err) 263 err = os.Mkdir(cfg.Root, 0o755) 264 assert.NilError(t, err) 265 266 d := &Daemon{root: cfg.Root} 267 d.configStore.Store(cfg) 268 unmountFile := getUnmountOnShutdownPath(&cfg.Config) 269 270 t.Run("regular dir no mountpoint", func(t *testing.T) { 271 err = setupDaemonRootPropagation(&cfg.Config) 272 assert.NilError(t, err) 273 _, err = os.Stat(unmountFile) 274 assert.NilError(t, err) 275 checkMounted(t, cfg.Root, true) 276 277 assert.Assert(t, d.cleanupMounts(&cfg.Config)) 278 checkMounted(t, cfg.Root, false) 279 280 _, err = os.Stat(unmountFile) 281 assert.Assert(t, os.IsNotExist(err)) 282 }) 283 284 t.Run("root is a private mountpoint", func(t *testing.T) { 285 err = mount.MakePrivate(cfg.Root) 286 assert.NilError(t, err) 287 defer mount.Unmount(cfg.Root) 288 289 err = setupDaemonRootPropagation(&cfg.Config) 290 assert.NilError(t, err) 291 assert.Check(t, ensureShared(cfg.Root)) 292 293 _, err = os.Stat(unmountFile) 294 assert.Assert(t, os.IsNotExist(err)) 295 assert.Assert(t, d.cleanupMounts(&cfg.Config)) 296 checkMounted(t, cfg.Root, true) 297 }) 298 299 // mount is pre-configured with a shared mount 300 t.Run("root is a shared mountpoint", func(t *testing.T) { 301 err = mount.MakeShared(cfg.Root) 302 assert.NilError(t, err) 303 defer mount.Unmount(cfg.Root) 304 305 err = setupDaemonRootPropagation(&cfg.Config) 306 assert.NilError(t, err) 307 308 if _, err := os.Stat(unmountFile); err == nil { 309 t.Fatal("unmount file should not exist") 310 } 311 312 assert.Assert(t, d.cleanupMounts(&cfg.Config)) 313 checkMounted(t, cfg.Root, true) 314 assert.Assert(t, mount.Unmount(cfg.Root)) 315 }) 316 317 // does not need mount but unmount file exists from previous run 318 t.Run("old mount file is cleaned up on setup if not needed", func(t *testing.T) { 319 err = mount.MakeShared(testRoot) 320 assert.NilError(t, err) 321 defer mount.MakePrivate(testRoot) 322 err = os.WriteFile(unmountFile, nil, 0o644) 323 assert.NilError(t, err) 324 325 err = setupDaemonRootPropagation(&cfg.Config) 326 assert.NilError(t, err) 327 328 _, err = os.Stat(unmountFile) 329 assert.Check(t, os.IsNotExist(err), err) 330 checkMounted(t, cfg.Root, false) 331 assert.Assert(t, d.cleanupMounts(&cfg.Config)) 332 }) 333 } 334 335 func TestIfaceAddrs(t *testing.T) { 336 CIDR := func(cidr string) *net.IPNet { 337 t.Helper() 338 nw, err := types.ParseCIDR(cidr) 339 assert.NilError(t, err) 340 return nw 341 } 342 343 for _, tt := range []struct { 344 name string 345 nws []*net.IPNet 346 }{ 347 { 348 name: "Single", 349 nws: []*net.IPNet{CIDR("172.101.202.254/16")}, 350 }, 351 { 352 name: "Multiple", 353 nws: []*net.IPNet{ 354 CIDR("172.101.202.254/16"), 355 CIDR("172.102.202.254/16"), 356 }, 357 }, 358 } { 359 t.Run(tt.name, func(t *testing.T) { 360 defer netnsutils.SetupTestOSContext(t)() 361 362 createBridge(t, "test", tt.nws...) 363 364 ipv4Nw, ipv6Nw, err := ifaceAddrs("test") 365 if err != nil { 366 t.Fatal(err) 367 } 368 369 assert.Check(t, is.DeepEqual(tt.nws, ipv4Nw, 370 cmpopts.SortSlices(func(a, b *net.IPNet) bool { return a.String() < b.String() }))) 371 // IPv6 link-local address 372 assert.Check(t, is.Len(ipv6Nw, 1)) 373 }) 374 } 375 } 376 377 func createBridge(t *testing.T, name string, bips ...*net.IPNet) { 378 t.Helper() 379 380 link := &netlink.Bridge{ 381 LinkAttrs: netlink.LinkAttrs{ 382 Name: name, 383 }, 384 } 385 if err := netlink.LinkAdd(link); err != nil { 386 t.Fatalf("Failed to create interface via netlink: %v", err) 387 } 388 for _, bip := range bips { 389 if err := netlink.AddrAdd(link, &netlink.Addr{IPNet: bip}); err != nil { 390 t.Fatal(err) 391 } 392 } 393 if err := netlink.LinkSetUp(link); err != nil { 394 t.Fatal(err) 395 } 396 }