Unverified Commit 25a6cc9a authored by Christian Brauner's avatar Christian Brauner
Browse files

selftests/filesystems: add open() test for anonymous inodes 

Test that anonymous inodes cannot be open()ed.

Link: https://lore.kernel.org/20250407-work-anon_inode-v1-9-53a44c20d44e@kernel.org


Reviewed-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent f8ca403a

tools/testing/selftests/filesystems/anon_inode_test.c

+17 −0
Original line number Diff line number Diff line
@@ -48,5 +48,22 @@ TEST(anon_inode_no_exec) 
	EXPECT_EQ(close(fd_context), 0);

}



TEST(anon_inode_no_open)

{

	int fd_context;



	fd_context = sys_fsopen("tmpfs", 0);

	ASSERT_GE(fd_context, 0);



	ASSERT_GE(dup2(fd_context, 500), 0);

	ASSERT_EQ(close(fd_context), 0);

	fd_context = 500;



	ASSERT_LT(open("/proc/self/fd/500", 0), 0);

	ASSERT_EQ(errno, ENXIO);



	EXPECT_EQ(close(fd_context), 0);

}



TEST_HARNESS_MAIN