2 files changed, 28 insertions, 2 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index 401b2ce..14e3766 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -532,24 +532,33 @@ else:
 is_emscripten = sys.platform == "emscripten"
 is_wasi = sys.platform == "wasi"
 
-# Apple mobile platforms (iOS/tvOS/watchOS) are POSIX-like but do not
-# have subprocess or fork support.
 is_apple_mobile = sys.platform in {"ios", "tvos", "watchos"}
 is_apple = is_apple_mobile or sys.platform == "darwin"
 
 has_fork_support = hasattr(os, "fork") and not (
+    # WASM and Apple mobile platforms do not support subprocesses.
     is_emscripten
     or is_wasi
     or is_apple_mobile
+
+    # Although Android supports fork, it's unsafe to call it from Python because
+    # all Android apps are multi-threaded.
+    or is_android
 )
 
 def requires_fork():
     return unittest.skipUnless(has_fork_support, "requires working os.fork()")
 
 has_subprocess_support = not (
+    # WASM and Apple mobile platforms do not support subprocesses.
     is_emscripten
     or is_wasi
     or is_apple_mobile
+
+    # Although Android supports subproceses, they're almost never useful in
+    # practice (see PEP 738). And most of the tests that use them are calling
+    # sys.executable, which won't work when Python is embedded in an Android app.
+    or is_android
 )
 
 def requires_subprocess():
diff --git a/Lib/test/support/os_helper.py b/Lib/test/support/os_helper.py
index 22787e3..ffa5fc5 100644
--- a/Lib/test/support/os_helper.py
+++ b/Lib/test/support/os_helper.py
@@ -198,6 +198,23 @@ def skip_unless_symlink(test):
     return test if ok else unittest.skip(msg)(test)
 
 
+_can_hardlink = None
+
+def can_hardlink():
+    global _can_hardlink
+    if _can_hardlink is None:
+        # Android blocks hard links using SELinux
+        # (https://stackoverflow.com/q/32365690).
+        _can_hardlink = hasattr(os, "link") and not support.is_android
+    return _can_hardlink
+
+
+def skip_unless_hardlink(test):
+    ok = can_hardlink()
+    msg = "requires hardlink support"
+    return test if ok else unittest.skip(msg)(test)
+
+
 _can_xattr = None