| 1 | //go:build linux |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "os" |
| 7 | "path/filepath" |
| 8 | "slices" |
| 9 | "strings" |
| 10 | "testing" |
| 11 | ) |
| 12 | |
| 13 | func plan11Rev4ReplaceRuntimeMask(t *testing.T) { |
| 14 | t.Helper() |
| 15 | replacement := filepath.Join(filepath.Dir(claimEdgeRuntimeMask), "operator-mask") |
| 16 | if err := os.Symlink("/dev/null", replacement); err != nil { |
| 17 | t.Fatal(err) |
| 18 | } |
| 19 | if err := os.Rename(replacement, claimEdgeRuntimeMask); err != nil { |
| 20 | t.Fatal(err) |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | // A same-boot boot-ID record can be an intent written before mask(2), not |
| 25 | // proof that the migration created the mask now at the unit path. Recovery |
| 26 | // must leave that ambiguous runtime mask in place. |
| 27 | func TestPlan11Rev4IntentBeforeMaskCrashKeepsLaterOperatorMask(t *testing.T) { |
| 28 | var calls []string |
| 29 | plan9Fix2Systemctl(t, "masked-runtime", &calls) |
| 30 | owner := plan9Fix2MaskOwner(t) |
| 31 | if err := os.WriteFile(owner, []byte(plan9Fix2Boot(t)), 0600); err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | if err := recoverLegacyClaimEdgeMask(t.Context()); err != nil { |
| 35 | t.Fatal(err) |
| 36 | } |
| 37 | for _, call := range calls { |
| 38 | if strings.HasPrefix(call, "unmask ") { |
| 39 | t.Fatalf("ambiguous operator mask was lifted: %v", calls) |
| 40 | } |
| 41 | } |
| 42 | if target, err := os.Readlink(claimEdgeRuntimeMask); err != nil || target != "/dev/null" { |
| 43 | t.Fatalf("operator mask changed: %q %v", target, err) |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | func TestPlan11Rev4IdentityIntentBeforeLinkKeepsLaterOperatorMask(t *testing.T) { |
| 48 | var calls []string |
| 49 | plan9Fix2Systemctl(t, "masked-runtime", &calls) |
| 50 | owner := plan9Fix2MaskOwner(t) |
| 51 | token := strings.Repeat("b", 32) |
| 52 | anchor := claimEdgeMaskAnchor(token) |
| 53 | if err := os.Symlink("/dev/null", anchor); err != nil { |
| 54 | t.Fatal(err) |
| 55 | } |
| 56 | record, err := currentClaimEdgeMask(anchor, plan9Fix2Boot(t), token) |
| 57 | if err != nil { |
| 58 | t.Fatal(err) |
| 59 | } |
| 60 | if err = writeClaimEdgeMaskRecord(record); err != nil { |
| 61 | t.Fatal(err) |
| 62 | } |
| 63 | if err = recoverLegacyClaimEdgeMask(t.Context()); err != nil { |
| 64 | t.Fatal(err) |
| 65 | } |
| 66 | if slices.Contains(calls, "unmask --runtime carlos-edge.service") { |
| 67 | t.Fatalf("intent authorised a later operator mask: %v", calls) |
| 68 | } |
| 69 | if target, err := os.Readlink(claimEdgeRuntimeMask); err != nil || target != "/dev/null" { |
| 70 | t.Fatalf("operator mask changed: %q %v", target, err) |
| 71 | } |
| 72 | if _, err = os.Stat(owner); !os.IsNotExist(err) { |
| 73 | t.Fatalf("stale intent remains: %v", err) |
| 74 | } |
| 75 | if _, err = os.Lstat(anchor); !os.IsNotExist(err) { |
| 76 | t.Fatalf("stale intent anchor remains: %v", err) |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | func TestPlan11Rev4ReleaseKeepsSameTargetOperatorReplacement(t *testing.T) { |
| 81 | var calls []string |
| 82 | plan9Fix2Systemctl(t, "enabled", &calls) |
| 83 | owner := plan9Fix2MaskOwner(t) |
| 84 | release, err := quiesceLegacyClaimJournals(t.Context()) |
| 85 | if err != nil { |
| 86 | t.Fatal(err) |
| 87 | } |
| 88 | plan11Rev4ReplaceRuntimeMask(t) |
| 89 | calls = nil |
| 90 | release() |
| 91 | if slices.Contains(calls, "unmask --runtime carlos-edge.service") { |
| 92 | t.Fatalf("replacement mask was lifted: %v", calls) |
| 93 | } |
| 94 | if target, err := os.Readlink(claimEdgeRuntimeMask); err != nil || target != "/dev/null" { |
| 95 | t.Fatalf("replacement mask changed: %q %v", target, err) |
| 96 | } |
| 97 | if _, err = os.Stat(owner); !os.IsNotExist(err) { |
| 98 | t.Fatalf("stale ownership record remains: %v", err) |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | func TestPlan11Rev4CompletedRecoveryKeepsSameTargetReplacement(t *testing.T) { |
| 103 | var calls []string |
| 104 | plan9Fix2Systemctl(t, "masked-runtime", &calls) |
| 105 | owner := plan9Fix2MaskOwner(t) |
| 106 | plan11Rev4WriteOwnedMask(t, owner) |
| 107 | plan11Rev4ReplaceRuntimeMask(t) |
| 108 | calls = nil |
| 109 | if err := recoverLegacyClaimEdgeMask(t.Context()); err != nil { |
| 110 | t.Fatal(err) |
| 111 | } |
| 112 | if slices.Contains(calls, "unmask --runtime carlos-edge.service") { |
| 113 | t.Fatalf("completed recovery lifted replacement mask: %v", calls) |
| 114 | } |
| 115 | if target, err := os.Readlink(claimEdgeRuntimeMask); err != nil || target != "/dev/null" { |
| 116 | t.Fatalf("replacement mask changed: %q %v", target, err) |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | func TestPlan11Rev4OwnedIdentityIsDurableAndCleansUp(t *testing.T) { |
| 121 | var calls []string |
| 122 | plan9Fix2Systemctl(t, "enabled", &calls) |
| 123 | owner := plan9Fix2MaskOwner(t) |
| 124 | release, err := quiesceLegacyClaimJournals(t.Context()) |
| 125 | if err != nil { |
| 126 | t.Fatal(err) |
| 127 | } |
| 128 | raw, err := os.ReadFile(owner) |
| 129 | if err != nil { |
| 130 | t.Fatal(err) |
| 131 | } |
| 132 | record, recorded := decodeClaimEdgeMaskRecord(raw, plan9Fix2Boot(t)) |
| 133 | if !recorded { |
| 134 | t.Fatalf("ownership record is not a concrete identity: %q", raw) |
| 135 | } |
| 136 | if ours, identityErr := claimEdgeMaskStillOwned(record); identityErr != nil || !ours { |
| 137 | t.Fatalf("ownership does not name the live mask: %v %v", ours, identityErr) |
| 138 | } |
| 139 | info, err := os.Stat(owner) |
| 140 | if err != nil { |
| 141 | t.Fatal(err) |
| 142 | } |
| 143 | if info.Mode().Perm() != 0600 { |
| 144 | t.Fatalf("ownership mode = %o, want 0600", info.Mode().Perm()) |
| 145 | } |
| 146 | if _, err = os.Stat(owner + ".tmp"); !os.IsNotExist(err) { |
| 147 | t.Fatalf("durable-write temporary remains: %v", err) |
| 148 | } |
| 149 | release() |
| 150 | if !slices.Contains(calls, "unmask --runtime carlos-edge.service") { |
| 151 | t.Fatalf("owned mask was not lifted: %v", calls) |
| 152 | } |
| 153 | if _, err = os.Lstat(claimEdgeRuntimeMask); !os.IsNotExist(err) { |
| 154 | t.Fatalf("owned runtime mask remains: %v", err) |
| 155 | } |
| 156 | if _, err = os.Stat(owner); !os.IsNotExist(err) { |
| 157 | t.Fatalf("owned mask record remains: %v", err) |
| 158 | } |
| 159 | if _, err = os.Lstat(claimEdgeMaskAnchor(record.Token)); !os.IsNotExist(err) { |
| 160 | t.Fatalf("owned mask anchor remains: %v", err) |
| 161 | } |
| 162 | } |
| 163 | |
amadan