| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "encoding/json" |
| 8 | "os" |
| 9 | "os/exec" |
| 10 | "path/filepath" |
| 11 | "strings" |
| 12 | "testing" |
| 13 | ) |
| 14 | |
| 15 | const rebootPredecessorUnit = "plan14-e51-predecessor.service" |
| 16 | |
| 17 | func rebootPredecessorCtl(ctx context.Context, args ...string) (string, error) { |
| 18 | raw, err := exec.CommandContext(ctx, "systemctl", args...).CombinedOutput() |
| 19 | return strings.TrimSpace(string(raw)), err |
| 20 | } |
| 21 | |
| 22 | func claimRebootPredecessorPhase1(t *testing.T) { |
| 23 | path := "/etc/systemd/system/" + rebootPredecessorUnit |
| 24 | file, err := os.OpenFile(path, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644) |
| 25 | if err != nil { |
| 26 | t.Fatal(err) |
| 27 | } |
| 28 | _, err = file.WriteString("[Service]\nType=simple\nExecStart=/bin/sleep infinity\nKillMode=control-group\n") |
| 29 | file.Close() |
| 30 | if err != nil { |
| 31 | t.Fatal(err) |
| 32 | } |
| 33 | if out, err := rebootPredecessorCtl(t.Context(), "daemon-reload"); err != nil { |
| 34 | t.Fatal(out, err) |
| 35 | } |
| 36 | if out, err := rebootPredecessorCtl(t.Context(), "start", rebootPredecessorUnit); err != nil { |
| 37 | t.Fatal(out, err) |
| 38 | } |
| 39 | _, in, shape := plan14UnitBindingFixture(t, rebootPredecessorUnit, "", "") |
| 40 | binding := claimUnitBinding{Schema: 1, Owner: unitBindingOwner(in), Shape: shape} |
| 41 | kernel := claimPredecessorKernel{ctl: rebootPredecessorCtl, group: claimPredecessorGroup, boot: claimUnitBoot} |
| 42 | predecessor, err := kernel.capture(t.Context(), binding) |
| 43 | if err != nil { |
| 44 | t.Fatal(err) |
| 45 | } |
| 46 | raw, _ := json.Marshal(predecessor) |
| 47 | if err := os.WriteFile(filepath.Join(claimUnitRebootDir, "predecessor.json"), raw, 0600); err != nil { |
| 48 | t.Fatal(err) |
| 49 | } |
| 50 | t.Logf("predecessor before boot=%s device=%d inode=%d", predecessor.Boot, predecessor.GroupIdentity.Device, predecessor.GroupIdentity.Inode) |
| 51 | } |
| 52 | |
| 53 | func claimRebootPredecessorPhase2(t *testing.T) { |
| 54 | t.Cleanup(func() { |
| 55 | rebootPredecessorCtl(context.Background(), "stop", rebootPredecessorUnit) |
| 56 | os.Remove("/etc/systemd/system/" + rebootPredecessorUnit) |
| 57 | rebootPredecessorCtl(context.Background(), "daemon-reload") |
| 58 | }) |
| 59 | var predecessor claimUnitPredecessor |
| 60 | raw, err := os.ReadFile(filepath.Join(claimUnitRebootDir, "predecessor.json")) |
| 61 | if err != nil || json.Unmarshal(raw, &predecessor) != nil { |
| 62 | t.Fatal(err) |
| 63 | } |
| 64 | boot, err := claimUnitBoot() |
| 65 | if err != nil || boot == predecessor.Boot { |
| 66 | t.Fatal("actual reboot required", err) |
| 67 | } |
| 68 | stops := 0 |
| 69 | kernel := claimPredecessorKernel{group: claimPredecessorGroup, boot: claimUnitBoot, ctl: func(ctx context.Context, args ...string) (string, error) { |
| 70 | if args[0] == "stop" { |
| 71 | stops++ |
| 72 | } |
| 73 | return rebootPredecessorCtl(ctx, args...) |
| 74 | }} |
| 75 | if err = kernel.stop(t.Context(), predecessor); err != nil { |
| 76 | t.Fatal("old boot empty predecessor", err) |
| 77 | } |
| 78 | if out, err := rebootPredecessorCtl(t.Context(), "start", rebootPredecessorUnit); err != nil { |
| 79 | t.Fatal(out, err) |
| 80 | } |
| 81 | invocation, err := rebootPredecessorCtl(t.Context(), "show", "-p", "InvocationID", "--value", rebootPredecessorUnit) |
| 82 | if err != nil { |
| 83 | t.Fatal(err) |
| 84 | } |
| 85 | if err = kernel.stop(t.Context(), predecessor); err == nil { |
| 86 | t.Fatal("old boot stopped replacement") |
| 87 | } |
| 88 | after, err := rebootPredecessorCtl(t.Context(), "show", "-p", "InvocationID", "--value", rebootPredecessorUnit) |
| 89 | if err != nil || invocation == "" || invocation != after || stops != 0 { |
| 90 | t.Fatal("replacement touched", invocation, after, stops, err) |
| 91 | } |
| 92 | } |
| 93 | |
amadan