github.com/adityamillind98/moby@v23.0.0-rc.4+incompatible/daemon/daemon_linux_test.go (about) 1 //go:build linux 2 // +build linux 3 4 package daemon // import "github.com/docker/docker/daemon" 5 6 import ( 7 "os" 8 "path/filepath" 9 "strings" 10 "testing" 11 12 containertypes "github.com/docker/docker/api/types/container" 13 "github.com/docker/docker/daemon/config" 14 "github.com/moby/sys/mount" 15 "github.com/moby/sys/mountinfo" 16 "gotest.tools/v3/assert" 17 is "gotest.tools/v3/assert/cmp" 18 ) 19 20 const mountsFixture = `142 78 0:38 / / rw,relatime - aufs none rw,si=573b861da0b3a05b,dio 21 143 142 0:60 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw 22 144 142 0:67 / /dev rw,nosuid - tmpfs tmpfs rw,mode=755 23 145 144 0:78 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666 24 146 144 0:49 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw 25 147 142 0:84 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw 26 148 147 0:86 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755 27 149 148 0:22 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset 28 150 148 0:25 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpu rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu 29 151 148 0:27 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuacct 30 152 148 0:28 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory 31 153 148 0:29 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices 32 154 148 0:30 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer 33 155 148 0:31 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio 34 156 148 0:32 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,perf_event 35 157 148 0:33 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,hugetlb 36 158 148 0:35 /docker/5425782a95e643181d8a485a2bab3c0bb21f51d7dfc03511f0e6fbf3f3aa356a /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup systemd rw,name=systemd 37 159 142 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 38 160 142 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 39 164 142 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 40 165 142 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 41 166 142 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 42 167 142 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 43 168 144 0:39 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k 44 169 144 0:12 /14 /dev/console rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000 45 83 147 0:10 / /sys/kernel/security rw,relatime - securityfs none rw 46 89 142 0:87 / /tmp rw,relatime - tmpfs none rw 47 97 142 0:60 / /run/docker/netns/default rw,nosuid,nodev,noexec,relatime - proc proc rw 48 100 160 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 49 115 100 0:102 / /var/lib/docker/aufs/mnt/0ecda1c63e5b58b3d89ff380bf646c95cc980252cf0b52466d43619aec7c8432 rw,relatime - aufs none rw,si=573b861dbc01905b,dio 50 116 160 0:107 / /var/lib/docker/containers/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k 51 118 142 0:102 / /run/docker/libcontainerd/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/rootfs rw,relatime - aufs none rw,si=573b861dbc01905b,dio 52 242 142 0:60 / /run/docker/netns/c3664df2a0f7 rw,nosuid,nodev,noexec,relatime - proc proc rw 53 120 100 0:122 / /var/lib/docker/aufs/mnt/03ca4b49e71f1e49a41108829f4d5c70ac95934526e2af8984a1f65f1de0715d rw,relatime - aufs none rw,si=573b861eb147805b,dio 54 171 142 0:122 / /run/docker/libcontainerd/e406ff6f3e18516d50e03dbca4de54767a69a403a6f7ec1edc2762812824521e/rootfs rw,relatime - aufs none rw,si=573b861eb147805b,dio 55 310 142 0:60 / /run/docker/netns/71a18572176b rw,nosuid,nodev,noexec,relatime - proc proc rw 56 ` 57 58 const mountsFixtureOverlay2 = `23 28 0:22 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw 59 24 28 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:13 - proc proc rw 60 25 28 0:6 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=491380k,nr_inodes=122845,mode=755 61 26 25 0:23 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000 62 27 28 0:24 / /run rw,nosuid,noexec,relatime shared:5 - tmpfs tmpfs rw,size=100884k,mode=755 63 28 0 252:1 / / rw,relatime shared:1 - ext4 /dev/vda1 rw,data=ordered 64 29 23 0:7 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw 65 30 25 0:25 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw 66 31 27 0:26 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k 67 32 23 0:27 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755 68 33 32 0:28 / /sys/fs/cgroup/unified rw,nosuid,nodev,noexec,relatime shared:10 - cgroup2 cgroup rw 69 34 32 0:29 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:11 - cgroup cgroup rw,xattr,name=systemd 70 35 23 0:30 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:12 - pstore pstore rw 71 36 32 0:31 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,blkio 72 37 32 0:32 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,memory 73 38 32 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,hugetlb 74 39 32 0:34 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,freezer 75 40 32 0:35 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event 76 41 32 0:36 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,pids 77 42 32 0:37 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpuset 78 43 32 0:38 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,cpu,cpuacct 79 44 32 0:39 / /sys/fs/cgroup/rdma rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,rdma 80 45 32 0:40 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:23 - cgroup cgroup rw,devices 81 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 82 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 83 48 23 0:8 / /sys/kernel/debug rw,relatime shared:26 - debugfs debugfs rw 84 49 25 0:19 / /dev/mqueue rw,relatime shared:27 - mqueue mqueue rw 85 50 25 0:43 / /dev/hugepages rw,relatime shared:28 - hugetlbfs hugetlbfs rw,pagesize=2M 86 80 23 0:20 / /sys/kernel/config rw,relatime shared:29 - configfs configfs rw 87 82 23 0:44 / /sys/fs/fuse/connections rw,relatime shared:30 - fusectl fusectl rw 88 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 89 391 28 0:49 / /var/lib/lxcfs rw,nosuid,nodev,relatime shared:208 - fuse.lxcfs lxcfs rw,user_id=0,group_id=0,allow_other 90 401 48 0:11 / /sys/kernel/debug/tracing rw,relatime shared:213 - tracefs tracefs rw 91 421 47 0:93 / /proc/sys/fs/binfmt_misc rw,relatime shared:223 - binfmt_misc binfmt_misc rw 92 510 27 0:3 net:[4026531993] /run/docker/netns/default rw shared:255 - nsfs nsfs rw 93 60 27 0:3 net:[4026532265] /run/docker/netns/ingress_sbox rw shared:40 - nsfs nsfs rw 94 162 27 0:3 net:[4026532331] /run/docker/netns/1-bj0aarwy1n rw shared:41 - nsfs nsfs rw 95 450 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 96 569 27 0:3 net:[4026532353] /run/docker/netns/7de1071d0d8b rw shared:245 - nsfs nsfs rw 97 245 27 0:50 / /run/user/0 rw,nosuid,nodev,relatime shared:160 - tmpfs tmpfs rw,size=100880k,mode=700 98 482 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 99 528 28 0:77 / /var/lib/docker/containers/404a7f860e600bfc144f7b5d9140d80bf3072fbb97659f98bc47039fd73d2695/mounts/shm rw,nosuid,nodev,noexec,relatime shared:260 - tmpfs shm rw,size=65536k 100 649 27 0:3 net:[4026532429] /run/docker/netns/7f85bc5ef3ba rw shared:265 - nsfs nsfs rw 101 ` 102 103 func TestCleanupMounts(t *testing.T) { 104 d := &Daemon{ 105 root: "/var/lib/docker/", 106 } 107 108 t.Run("aufs", func(t *testing.T) { 109 expected := "/var/lib/docker/containers/d045dc441d2e2e1d5b3e328d47e5943811a40819fb47497c5f5a5df2d6d13c37/shm" 110 var unmounted int 111 unmount := func(target string) error { 112 if target == expected { 113 unmounted++ 114 } 115 return nil 116 } 117 118 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixture), "", unmount) 119 assert.NilError(t, err) 120 assert.Equal(t, unmounted, 1, "Expected to unmount the shm (and the shm only)") 121 }) 122 123 t.Run("overlay2", func(t *testing.T) { 124 expected := "/var/lib/docker/containers/404a7f860e600bfc144f7b5d9140d80bf3072fbb97659f98bc47039fd73d2695/mounts/shm" 125 var unmounted int 126 unmount := func(target string) error { 127 if target == expected { 128 unmounted++ 129 } 130 return nil 131 } 132 133 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixtureOverlay2), "", unmount) 134 assert.NilError(t, err) 135 assert.Equal(t, unmounted, 1, "Expected to unmount the shm (and the shm only)") 136 }) 137 } 138 139 func TestCleanupMountsByID(t *testing.T) { 140 d := &Daemon{ 141 root: "/var/lib/docker/", 142 } 143 144 t.Run("aufs", func(t *testing.T) { 145 expected := "/var/lib/docker/aufs/mnt/03ca4b49e71f1e49a41108829f4d5c70ac95934526e2af8984a1f65f1de0715d" 146 var unmounted int 147 unmount := func(target string) error { 148 if target == expected { 149 unmounted++ 150 } 151 return nil 152 } 153 154 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixture), "03ca4b49e71f1e49a41108829f4d5c70ac95934526e2af8984a1f65f1de0715d", unmount) 155 assert.NilError(t, err) 156 assert.Equal(t, unmounted, 1, "Expected to unmount the root (and that only)") 157 }) 158 159 t.Run("overlay2", func(t *testing.T) { 160 expected := "/var/lib/docker/overlay2/3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67/merged" 161 var unmounted int 162 unmount := func(target string) error { 163 if target == expected { 164 unmounted++ 165 } 166 return nil 167 } 168 169 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountsFixtureOverlay2), "3a4b807fcb98c208573f368c5654a6568545a7f92404a07d0045eb5c85acaf67", unmount) 170 assert.NilError(t, err) 171 assert.Equal(t, unmounted, 1, "Expected to unmount the root (and that only)") 172 }) 173 } 174 175 func TestNotCleanupMounts(t *testing.T) { 176 d := &Daemon{ 177 repository: "", 178 } 179 var unmounted bool 180 unmount := func(target string) error { 181 unmounted = true 182 return nil 183 } 184 mountInfo := `234 232 0:59 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k` 185 err := d.cleanupMountsFromReaderByID(strings.NewReader(mountInfo), "", unmount) 186 assert.NilError(t, err) 187 assert.Equal(t, unmounted, false, "Expected not to clean up /dev/shm") 188 } 189 190 func TestValidateContainerIsolationLinux(t *testing.T) { 191 d := Daemon{} 192 193 _, err := d.verifyContainerSettings(&containertypes.HostConfig{Isolation: containertypes.IsolationHyperV}, nil, false) 194 assert.Check(t, is.Error(err, "invalid isolation 'hyperv' on linux")) 195 } 196 197 func TestShouldUnmountRoot(t *testing.T) { 198 for _, test := range []struct { 199 desc string 200 root string 201 info *mountinfo.Info 202 expect bool 203 }{ 204 { 205 desc: "root is at /", 206 root: "/docker", 207 info: &mountinfo.Info{Root: "/docker", Mountpoint: "/docker"}, 208 expect: true, 209 }, 210 { 211 desc: "root is at in a submount from `/`", 212 root: "/foo/docker", 213 info: &mountinfo.Info{Root: "/docker", Mountpoint: "/foo/docker"}, 214 expect: true, 215 }, 216 { 217 desc: "root is mounted in from a parent mount namespace same root dir", // dind is an example of this 218 root: "/docker", 219 info: &mountinfo.Info{Root: "/docker/volumes/1234657/_data", Mountpoint: "/docker"}, 220 expect: false, 221 }, 222 } { 223 t.Run(test.desc, func(t *testing.T) { 224 for _, options := range []struct { 225 desc string 226 Optional string 227 expect bool 228 }{ 229 {desc: "shared", Optional: "shared:", expect: true}, 230 {desc: "slave", Optional: "slave:", expect: false}, 231 {desc: "private", Optional: "private:", expect: false}, 232 } { 233 t.Run(options.desc, func(t *testing.T) { 234 expect := options.expect 235 if expect { 236 expect = test.expect 237 } 238 if test.info != nil { 239 test.info.Optional = options.Optional 240 } 241 assert.Check(t, is.Equal(expect, shouldUnmountRoot(test.root, test.info))) 242 }) 243 } 244 }) 245 } 246 } 247 248 func checkMounted(t *testing.T, p string, expect bool) { 249 t.Helper() 250 mounted, err := mountinfo.Mounted(p) 251 assert.Check(t, err) 252 assert.Check(t, mounted == expect, "expected %v, actual %v", expect, mounted) 253 } 254 255 func TestRootMountCleanup(t *testing.T) { 256 if os.Getuid() != 0 { 257 t.Skip("root required") 258 } 259 260 t.Parallel() 261 262 testRoot, err := os.MkdirTemp("", t.Name()) 263 assert.NilError(t, err) 264 defer os.RemoveAll(testRoot) 265 cfg := &config.Config{} 266 267 err = mount.MakePrivate(testRoot) 268 assert.NilError(t, err) 269 defer mount.Unmount(testRoot) 270 271 cfg.ExecRoot = filepath.Join(testRoot, "exec") 272 cfg.Root = filepath.Join(testRoot, "daemon") 273 274 err = os.Mkdir(cfg.ExecRoot, 0755) 275 assert.NilError(t, err) 276 err = os.Mkdir(cfg.Root, 0755) 277 assert.NilError(t, err) 278 279 d := &Daemon{configStore: cfg, root: cfg.Root} 280 unmountFile := getUnmountOnShutdownPath(cfg) 281 282 t.Run("regular dir no mountpoint", func(t *testing.T) { 283 err = setupDaemonRootPropagation(cfg) 284 assert.NilError(t, err) 285 _, err = os.Stat(unmountFile) 286 assert.NilError(t, err) 287 checkMounted(t, cfg.Root, true) 288 289 assert.Assert(t, d.cleanupMounts()) 290 checkMounted(t, cfg.Root, false) 291 292 _, err = os.Stat(unmountFile) 293 assert.Assert(t, os.IsNotExist(err)) 294 }) 295 296 t.Run("root is a private mountpoint", func(t *testing.T) { 297 err = mount.MakePrivate(cfg.Root) 298 assert.NilError(t, err) 299 defer mount.Unmount(cfg.Root) 300 301 err = setupDaemonRootPropagation(cfg) 302 assert.NilError(t, err) 303 assert.Check(t, ensureShared(cfg.Root)) 304 305 _, err = os.Stat(unmountFile) 306 assert.Assert(t, os.IsNotExist(err)) 307 assert.Assert(t, d.cleanupMounts()) 308 checkMounted(t, cfg.Root, true) 309 }) 310 311 // mount is pre-configured with a shared mount 312 t.Run("root is a shared mountpoint", func(t *testing.T) { 313 err = mount.MakeShared(cfg.Root) 314 assert.NilError(t, err) 315 defer mount.Unmount(cfg.Root) 316 317 err = setupDaemonRootPropagation(cfg) 318 assert.NilError(t, err) 319 320 if _, err := os.Stat(unmountFile); err == nil { 321 t.Fatal("unmount file should not exist") 322 } 323 324 assert.Assert(t, d.cleanupMounts()) 325 checkMounted(t, cfg.Root, true) 326 assert.Assert(t, mount.Unmount(cfg.Root)) 327 }) 328 329 // does not need mount but unmount file exists from previous run 330 t.Run("old mount file is cleaned up on setup if not needed", func(t *testing.T) { 331 err = mount.MakeShared(testRoot) 332 assert.NilError(t, err) 333 defer mount.MakePrivate(testRoot) 334 err = os.WriteFile(unmountFile, nil, 0644) 335 assert.NilError(t, err) 336 337 err = setupDaemonRootPropagation(cfg) 338 assert.NilError(t, err) 339 340 _, err = os.Stat(unmountFile) 341 assert.Check(t, os.IsNotExist(err), err) 342 checkMounted(t, cfg.Root, false) 343 assert.Assert(t, d.cleanupMounts()) 344 }) 345 }