[3.13] gh-116622: Don't expose FICLONE ioctl on Android (GH-122522) (#122539)

miss-islington · mhsmith · freakboy3742 · web-flow · commit 69cf92fbca9b · 2024-08-16T16:07:27.000+08:00
gh-116622: Don't expose `FICLONE` ioctl on Android (GH-122522) Don't expose `FICLONE` ioctl on Android (cherry picked from commit 06656e2) Co-authored-by: Malcolm Smith <smith@chaquo.com> Co-authored-by: Russell Keith-Magee <russell@keith-magee.com>
diff --git a/Misc/NEWS.d/next/Library/2024-07-31-15-08-42.gh-issue-116622.aKxIQA.rst b/Misc/NEWS.d/next/Library/2024-07-31-15-08-42.gh-issue-116622.aKxIQA.rst
@@ -0,0 +1,2 @@
+On Android, the ``FICLONE`` and ``FICLONERANGE`` constants are no longer
+exposed by :mod:`fcntl`, as these ioctls are blocked by SELinux.
diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
@@ -580,12 +580,17 @@ all_ins(PyObject* m)
 #ifdef F_GETPIPE_SZ
     if (PyModule_AddIntMacro(m, F_GETPIPE_SZ)) return -1;
 #endif
+
+/* On Android, FICLONE is blocked by SELinux. */
+#ifndef __ANDROID__
 #ifdef FICLONE
     if (PyModule_AddIntMacro(m, FICLONE)) return -1;
 #endif
 #ifdef FICLONERANGE
     if (PyModule_AddIntMacro(m, FICLONERANGE)) return -1;
 #endif
+#endif
+
 #ifdef F_GETOWN_EX
     // since Linux 2.6.32
     if (PyModule_AddIntMacro(m, F_GETOWN_EX)) return -1;

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+On Android, the ``FICLONE`` and ``FICLONERANGE`` constants are no longer
	`2`	+exposed by :mod:`fcntl`, as these ioctls are blocked by SELinux.