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| 1 | //go:build linux |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "os" |
| 8 | "path/filepath" |
| 9 | "testing" |
| 10 | |
| 11 | "golang.org/x/sys/unix" |
| 12 | ) |
| 13 | |
| 14 | // On a kernel without openat2 the removal refuses and leaves the tree: there |
| 15 | // is no path-based fallback. |
| 16 | func TestInstallChannelRemovalRefusesWithoutOpenat2(t *testing.T) { |
| 17 | f := newChannelFixture(t, "v1.2.0") |
| 18 | entry := filepath.Join(f.a.dataDir, "system", "router", "v1.4.0") |
| 19 | if err := os.MkdirAll(entry, 0o755); err != nil { |
| 20 | t.Fatal(err) |
| 21 | } |
| 22 | if err := os.WriteFile(filepath.Join(entry, "carlos"), []byte("x"), 0o755); err != nil { |
| 23 | t.Fatal(err) |
| 24 | } |
| 25 | real := openat2 |
| 26 | defer func() { openat2 = real }() |
| 27 | for _, refuse := range []error{unix.ENOSYS, unix.EPERM, unix.EXDEV} { |
| 28 | openat2 = func(int, string, *unix.OpenHow) (int, error) { return -1, refuse } |
| 29 | if err := removeCacheEntry(f.a.dataDir, "v1.4.0"); !errors.Is(err, refuse) { |
| 30 | t.Fatalf("removal with openat2 failing %v: %v", refuse, err) |
| 31 | } |
| 32 | if _, err := os.Stat(filepath.Join(entry, "carlos")); err != nil { |
| 33 | t.Fatalf("the tree was removed without openat2: %v", err) |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
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