[apple/xnu.git] / tests / jumbo_va_spaces_28530648.c

#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>

#include <darwintest.h>
#include <darwintest_utils.h>

T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));

#define GB (1ULL * 1024 * 1024 * 1024)

/*
 * This test expects the entitlement to be the enabling factor for a process to
 * allocate at least this many GB of VA space. i.e. with the entitlement, n GB
 * must be allocatable; whereas without it, it must be less.
 * This value was determined experimentally to fit on applicable devices and to
 * be clearly distinguishable from the default VA limit.
 */
#define ALLOC_TEST_GB 53

T_DECL(TESTNAME,
	"Verify that a required entitlement is present in order to be granted an extra-large "
	"VA space on arm64",
	T_META_NAMESPACE("xnu.vm"),
	T_META_CHECK_LEAKS(false))
{
	int	i;
	void	*res;

	if (!dt_64_bit_kernel()) {
		T_SKIP("This test is only applicable to arm64");
	}

	T_LOG("Attemping to allocate VA space in 1 GB chunks.");

	for (i = 0; i < (ALLOC_TEST_GB * 2); i++) {
		res = mmap(NULL, 1 * GB, PROT_NONE, MAP_PRIVATE | MAP_ANON, 0, 0);
		if (res == MAP_FAILED) {
			if (errno != ENOMEM) {
				T_WITH_ERRNO;
				T_LOG("mmap failed: stopped at %d of %d GB allocated", i, ALLOC_TEST_GB);
			}
			break;
		} else {
			T_LOG("%d: %p\n", i, res);
		}
	}

#if defined(ENTITLED)
	T_EXPECT_GE_INT(i, ALLOC_TEST_GB, "Allocate at least %d GB of VA space", ALLOC_TEST_GB);
#else
	T_EXPECT_LT_INT(i, ALLOC_TEST_GB, "Not permitted to allocate %d GB of VA space", ALLOC_TEST_GB);
#endif
}
Commit	Line	Data
813fb2f6 A	1	#include <stdio.h>
	2	#include <errno.h>
	3	#include <string.h>
	4	#include <unistd.h>
	5	#include <sys/mman.h>
	6
	7	#include <darwintest.h>
	8	#include <darwintest_utils.h>
	9
cb323159	10	T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));
813fb2f6 A	11
	12	#define GB (1ULL * 1024 * 1024 * 1024)
	13
	14	/*
	15	* This test expects the entitlement to be the enabling factor for a process to
	16	* allocate at least this many GB of VA space. i.e. with the entitlement, n GB
	17	* must be allocatable; whereas without it, it must be less.
f427ee49 A	18	* This value was determined experimentally to fit on applicable devices and to
f427ee49 A	19	* be clearly distinguishable from the default VA limit.
813fb2f6	20	*/
f427ee49	21	#define ALLOC_TEST_GB 53
813fb2f6	22
f427ee49 A	23	T_DECL(TESTNAME,
f427ee49 A	24	"Verify that a required entitlement is present in order to be granted an extra-large "
813fb2f6 A	25	"VA space on arm64",
	26	T_META_NAMESPACE("xnu.vm"),
	27	T_META_CHECK_LEAKS(false))
	28	{
	29	int i;
	30	void *res;
	31
	32	if (!dt_64_bit_kernel()) {
	33	T_SKIP("This test is only applicable to arm64");
	34	}
	35
	36	T_LOG("Attemping to allocate VA space in 1 GB chunks.");
	37
	38	for (i = 0; i < (ALLOC_TEST_GB * 2); i++) {
	39	res = mmap(NULL, 1 * GB, PROT_NONE, MAP_PRIVATE \| MAP_ANON, 0, 0);
	40	if (res == MAP_FAILED) {
	41	if (errno != ENOMEM) {
	42	T_WITH_ERRNO;
	43	T_LOG("mmap failed: stopped at %d of %d GB allocated", i, ALLOC_TEST_GB);
	44	}
	45	break;
	46	} else {
	47	T_LOG("%d: %p\n", i, res);
	48	}
	49	}
	50
	51	#if defined(ENTITLED)
	52	T_EXPECT_GE_INT(i, ALLOC_TEST_GB, "Allocate at least %d GB of VA space", ALLOC_TEST_GB);
	53	#else
	54	T_EXPECT_LT_INT(i, ALLOC_TEST_GB, "Not permitted to allocate %d GB of VA space", ALLOC_TEST_GB);
	55	#endif
	56	}