C++ (Cpp) mfd_fail_shrink Examples

Example #1

File: memfd_test.c Project: shinsec/linux-parrot

/*
 * Test SEAL_SHRINK | SEAL_GROW
 * Test whether SEAL_SHRINK | SEAL_GROW actually prevents resizing
 */
static void test_seal_resize(void)
{
	int fd;

	fd = mfd_assert_new("kern_memfd_seal_resize",
			    MFD_DEF_SIZE,
			    MFD_CLOEXEC | MFD_ALLOW_SEALING);
	mfd_assert_has_seals(fd, 0);
	mfd_assert_add_seals(fd, F_SEAL_SHRINK | F_SEAL_GROW);
	mfd_assert_has_seals(fd, F_SEAL_SHRINK | F_SEAL_GROW);

	mfd_assert_read(fd);
	mfd_assert_write(fd);
	mfd_fail_shrink(fd);
	mfd_fail_grow(fd);
	mfd_fail_grow_write(fd);

	close(fd);
}

Example #2

File: memfd_test.c Project: Anjali05/linux

/*
 * Test SEAL_SHRINK
 * Test whether SEAL_SHRINK actually prevents shrinking
 */
static void test_seal_shrink(void)
{
	int fd;

	printf("%s SEAL-SHRINK\n", memfd_str);

	fd = mfd_assert_new("kern_memfd_seal_shrink",
			    mfd_def_size,
			    MFD_CLOEXEC | MFD_ALLOW_SEALING);
	mfd_assert_has_seals(fd, 0);
	mfd_assert_add_seals(fd, F_SEAL_SHRINK);
	mfd_assert_has_seals(fd, F_SEAL_SHRINK);

	mfd_assert_read(fd);
	mfd_assert_write(fd);
	mfd_fail_shrink(fd);
	mfd_assert_grow(fd);
	mfd_assert_grow_write(fd);

	close(fd);
}