| 1 | // FUSE availability detection. go-fuse only builds on linux, darwin, and freebsd. |
| 2 | //go:build (linux || darwin || freebsd) && !nofuse |
| 3 | |
| 4 | package fusetest |
| 5 | |
| 6 | import ( |
| 7 | "os" |
| 8 | "os/exec" |
| 9 | "runtime" |
| 10 | "testing" |
| 11 | ) |
| 12 | |
| 13 | // fuseFlagFromEnv returns the value of TEST_FUSE if set, or empty string. |
| 14 | // Also checks the legacy TEST_NO_FUSE for backwards compatibility. |
| 15 | func fuseFlagFromEnv() string { |
| 16 | if v := os.Getenv("TEST_FUSE"); v != "" { |
| 17 | return v |
| 18 | } |
| 19 | // Legacy: TEST_NO_FUSE=1 is equivalent to TEST_FUSE=0 |
| 20 | if os.Getenv("TEST_NO_FUSE") == "1" { |
| 21 | return "0" |
| 22 | } |
| 23 | return "" |
| 24 | } |
| 25 | |
| 26 | // fuseAvailable checks whether FUSE is likely to work on this system |
| 27 | // and skips with a helpful message if not. |
| 28 | // |
| 29 | // hanwen/go-fuse supports Linux, macOS, and FreeBSD. NetBSD and OpenBSD |
| 30 | // are not supported: NetBSD uses PUFFS (a different protocol) and |
| 31 | // OpenBSD's FUSE support is not compatible with go-fuse's mount mechanism. |
| 32 | func fuseAvailable(t *testing.T) bool { |
| 33 | t.Helper() |
| 34 | |
| 35 | switch runtime.GOOS { |
| 36 | case "linux", "darwin", "freebsd": |
| 37 | default: |
| 38 | t.Skip("FUSE not supported on", runtime.GOOS) |
| 39 | return false |
| 40 | } |
| 41 | |
| 42 | if runtime.GOOS == "linux" { |
| 43 | // go-fuse tries fusermount3 first, then fusermount. |
| 44 | if _, err := exec.LookPath("fusermount"); err == nil { |
| 45 | return true |
| 46 | } |
| 47 | if _, err := exec.LookPath("fusermount3"); err == nil { |
| 48 | return true |
| 49 | } |
| 50 | t.Skip("neither fusermount nor fusermount3 found in PATH") |
| 51 | return false |
| 52 | } |
| 53 | |
| 54 | if _, err := exec.LookPath("umount"); err != nil { |
| 55 | t.Skip("umount not found in PATH") |
| 56 | } |
| 57 | return true |
| 58 | } |