| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "os" |
| 7 | "os/exec" |
| 8 | "path/filepath" |
| 9 | "strconv" |
| 10 | "testing" |
| 11 | |
| 12 | "github.com/carlosframework/platform/internal/release" |
| 13 | "github.com/carlosframework/platform/internal/rootstate" |
| 14 | ) |
| 15 | |
| 16 | func TestPlan14GenerationKernelRetirementRootRunner(t *testing.T) { |
| 17 | dir := os.Getenv("PLAN14_E25_RETIRE_KERNEL_CHILD") |
| 18 | if dir == "" { |
| 19 | dir = generationRootRunnerDir(t) |
| 20 | cmd := exec.CommandContext(t.Context(), "unshare", "--mount", "--pid", "--fork", "--mount-proc", os.Args[0], "-test.run=^TestPlan14GenerationKernelRetirementRootRunner$", "-test.count=1") |
| 21 | cmd.Dir = dir |
| 22 | cmd.Env = append(os.Environ(), "PLAN14_E25_RETIRE_KERNEL_CHILD="+dir) |
| 23 | if out, err := cmd.CombinedOutput(); err != nil { |
| 24 | t.Fatalf("isolated root retirement: %v %s", err, out) |
| 25 | } |
| 26 | return |
| 27 | } |
| 28 | t.Setenv("CARLOS_OPT_DIR", dir) |
| 29 | path := release.VersionPath(dir, "bab", "v1", "shop") |
| 30 | if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil { |
| 31 | t.Fatal(err) |
| 32 | } |
| 33 | if err := os.WriteFile(path, []byte("retained generation"), 0644); err != nil { |
| 34 | t.Fatal(err) |
| 35 | } |
| 36 | identity := func(path string) rootstate.FileIdentity { |
| 37 | t.Helper() |
| 38 | file, err := os.Open(path) |
| 39 | if err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | defer file.Close() |
| 43 | id, err := rootstate.Identity(file) |
| 44 | if err != nil { |
| 45 | t.Fatal(err) |
| 46 | } |
| 47 | return id |
| 48 | } |
| 49 | k := generationKernel{proc: "/proc"} |
| 50 | boot, err := k.boot() |
| 51 | if err != nil { |
| 52 | t.Fatal(err) |
| 53 | } |
| 54 | controller := exec.CommandContext(t.Context(), "/bin/sleep", "60") |
| 55 | controller.Dir = dir |
| 56 | if err := controller.Start(); err != nil { |
| 57 | t.Fatal(err) |
| 58 | } |
| 59 | joined := false |
| 60 | t.Cleanup(func() { |
| 61 | if !joined { |
| 62 | _ = controller.Process.Kill() |
| 63 | _ = controller.Wait() |
| 64 | } |
| 65 | }) |
| 66 | raw, err := generationRead(filepath.Join("/proc", strconv.Itoa(controller.Process.Pid), "stat")) |
| 67 | if err != nil { |
| 68 | t.Fatal(err) |
| 69 | } |
| 70 | start, err := generationStart(raw) |
| 71 | if err != nil { |
| 72 | t.Fatal(err) |
| 73 | } |
| 74 | r := release.GenerationReservation{Binding: release.GenerationBinding{ |
| 75 | Binding: release.HistoryBinding{Host: filepath.Base(dir) + ".example", Account: "bab", App: "shop"}, |
| 76 | Target: release.GenerationOwner{BootID: boot}, Version: "v1", Path: path, Tree: filepath.Dir(path), |
| 77 | Executable: identity(path), TreeIdentity: identity(filepath.Dir(path)), |
| 78 | ControllerPID: controller.Process.Pid, ControllerStart: start, |
| 79 | }} |
| 80 | if _, err := productionGenerationAbsence(t.Context(), r); err == nil { |
| 81 | t.Fatal("live controller released") |
| 82 | } |
| 83 | if err := controller.Process.Kill(); err != nil { |
| 84 | t.Fatal(err) |
| 85 | } |
| 86 | _ = controller.Wait() |
| 87 | joined = true |
| 88 | if digest, err := productionGenerationAbsence(t.Context(), r); err != nil || len(digest) != 64 { |
| 89 | t.Fatalf("joined controller: %s %v", digest, err) |
| 90 | } |
| 91 | file, err := os.Open(path) |
| 92 | if err != nil { |
| 93 | t.Fatal(err) |
| 94 | } |
| 95 | if _, err := productionGenerationAbsence(t.Context(), r); err == nil { |
| 96 | file.Close() |
| 97 | t.Fatal("controller join erased an open reference") |
| 98 | } |
| 99 | file.Close() |
| 100 | if err := os.Rename(filepath.Dir(path), filepath.Dir(path)+".old"); err != nil { |
| 101 | t.Fatal(err) |
| 102 | } |
| 103 | if err := os.Mkdir(filepath.Dir(path), 0755); err != nil { |
| 104 | t.Fatal(err) |
| 105 | } |
| 106 | if err := os.WriteFile(path, []byte("replacement"), 0644); err != nil { |
| 107 | t.Fatal(err) |
| 108 | } |
| 109 | if _, err := productionGenerationAbsence(t.Context(), r); err == nil { |
| 110 | t.Fatal("replaced staged tree discharged the original identity") |
| 111 | } |
| 112 | } |
| 113 | |
amadan