Unverified Commit 15845cbc authored by Christian Brauner's avatar Christian Brauner
Browse files

test: add openat2() test for invalid upper 32 bit flag value 

Test that openat2() rejects unknown flags in the upper 32 bit range.

Link: https://lore.kernel.org/r/20210528092417.3942079-4-brauner@kernel.org


Cc: Richard Guy Briggs <rgb@redhat.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: default avatarRichard Guy Briggs <rgb@redhat.com>
Signed-off-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
parent cfe80306

tools/testing/selftests/openat2/openat2_test.c

+6 −1
Original line number Diff line number Diff line
@@ -155,7 +155,7 @@ struct flag_test { 
	int err;

};



#define NUM_OPENAT2_FLAG_TESTS 24

#define NUM_OPENAT2_FLAG_TESTS 25



void test_openat2_flags(void)

{
@@ -229,6 +229,11 @@ void test_openat2_flags(void) 
		{ .name = "invalid how.resolve and O_PATH",

		  .how.flags = O_PATH,

		  .how.resolve = 0x1337, .err = -EINVAL },



		/* currently unknown upper 32 bit rejected. */

		{ .name = "currently unknown bit (1 << 63)",

		  .how.flags = O_RDONLY | (1ULL << 63),

		  .how.resolve = 0, .err = -EINVAL },

	};



	BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_FLAG_TESTS);