1/*
2 *  Part of the execve tests. This program should not be compiled fat. xnu_quick_test
3 * will call the various single-architecture builds of this program as helpers to test
4 * the exec() transitions it cannot test itself.
5 *
6 * When running on a 64-bit machine (x86_64 or PPC64), the 32-bit version of
7 * xnu_quick_test will fork and exec a 64-bit helper process that performs
8 * the following tests.
9 * 1. 64 bit process forking() 64-bit child, child execing() 64-bit file(4GB pagezero)
10 * 2. 64 bit process forking() 64-bit child, child execing() 64-bit file (4KB pagezero)
11 * 3. 64 bit process forking() 64-bit child, child execing() 32-bit file
12 *
13 *  The 64-bit version of xnu_quick_test will fork and exec a 32-bit process
14 * that performs the following tests.
15 * 4. 32 bit process forking() 32-bit child, child execing() 32-bit file
16 * 5. 32 bit process forking() 32-bit child, child execing() 64 bit file (4GB pagezero)
17 * 6. 32 bit process forking() 32-bit child, child execing() 64 bit file (4KB pagezero)
18 */
19
20#include <stdio.h>
21#include <unistd.h>
22#include <sys/types.h>
23#include <sys/syscall.h>
24
25extern int do_execve_test(char * path, char * argv[], void * envp, int killwait);
26extern int get_bits(void);
27
28int g_testbots_active = 0;
29int main(int argc, const char * argv[])
30{
31	int	my_err, my_status;
32	pid_t	my_pid, my_wait_pid;
33	char *	errmsg = NULL;
34	char *	argvs[2] = {"", NULL};
35	int 	bits = get_bits();		/* Gets actual processor bit-ness. */
36
37#if defined(__i386__)
38	/*
39	 * This is the helper binary for the x86_64 version of  xnu_quick_test. xnu_quick_test
40	 * forks and execs this code to test exec()ing from a 32-bit binary.
41	 */
42	errmsg = "execve failed: from i386 forking and exec()ing i386 process.\n";
43	argvs[0] = "sleep-i386";
44	if (do_execve_test("helpers/sleep-i386", argvs, NULL, 0))	goto test_failed_exit;
45
46	errmsg = "execve failed: from i386 forking and exec()ing x86_64 process w/ 4G pagezero.\n";
47	argvs[0] = "sleep-x86_64-4G";
48	if (do_execve_test("helpers/sleep-x86_64-4G", argvs, NULL, 0))	goto test_failed_exit;
49
50	errmsg = "execve failed: from i386 forking and exec()ing x86_64 process w/ 4K pagezero.\n";
51	argvs[0] = "sleep-x86_64-4K";
52	if (do_execve_test("helpers/sleep-x86_64-4K", argvs, NULL, 0))	goto test_failed_exit;
53#endif
54
55
56#if defined(__x86_64__)
57	/*
58	 * This is the helper binary for the i386 version of xnu_quick_test. xnu_quick_test
59	 * forks and execs this code to test exec()ing from a 64-bit binary.
60	 */
61	errmsg = "execve failed: from x86_64 forking and exec()ing 64-bit x86_64 process w/ 4G pagezero.\n";
62	argvs[0] = "sleep-x86_64-4G";
63	if (do_execve_test("helpers/sleep-x86_64-4G", argvs, NULL, 1))		goto test_failed_exit;
64
65	errmsg = "execve failed: from x86_64 forking and exec()ing 64-bit x86_64 process w/ 4K Pagezero.\n";
66	argvs[0] = "sleep-x86_64-4K";
67	if (do_execve_test("helpers/sleep-x86_64-4K", argvs, NULL, 1))		goto test_failed_exit;
68
69	errmsg = "execve failed: from x64_64 forking and exec()ing 32-bit i386 process.\n";
70	argvs[0] = "sleep-i386";
71	if (do_execve_test("helpers/sleep-i386", argvs, NULL, 1))		goto test_failed_exit;
72#endif
73
74
75	/*
76	 * We are ourselves launched with do_execve_test, which wants a chance to
77	 * send a SIGKILL
78	 */
79	sleep(4);
80	return 0;
81
82test_failed_exit:
83	if (errmsg)
84		printf("%s", errmsg);
85	return -1;
86}
87
88