1 #include <darwintest.h> 2 #include <mach-o/dyld.h> 3 #include <spawn.h> 4 #include <unistd.h> 5 #include <sys/wait.h> 6 #include <fcntl.h> 7 #include <stdlib.h> 8 9 #include <TargetConditionals.h> 10 11 T_DECL(posix_spawn_alt_rosetta, "verify posix_spawn_set_alt_rosetta_np switches to alternative rosetta runtime", 12 T_META_ASROOT(true), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) 13 { 14 #if TARGET_OS_OSX && defined(__arm64__) 15 int ret, pid; 16 posix_spawnattr_t spawnattr; 17 char path[1024]; 18 uint32_t size = sizeof(path); 19 cpu_type_t cpuprefs[] = { CPU_TYPE_X86_64 }; 20 cpu_type_t subcpuprefs[] = { CPU_SUBTYPE_ANY }; 21 int wait_ret = 0; 22 23 if (access("/Library/Apple/usr/libexec/oah/libRosettaRuntime", O_RDONLY) != 0) { 24 T_SKIP("Rosetta not installed"); 25 return; 26 } 27 28 if (access("/usr/local/libexec/rosetta/runtime_internal", O_RDONLY) != 0) { 29 system("mkdir -p /usr/local/libexec/oah"); 30 system("cp /Library/Apple/usr/libexec/rosetta/runtime /usr/local/libexec/rosetta/runtime_internal"); 31 } 32 33 T_QUIET; T_ASSERT_EQ(_NSGetExecutablePath(path, &size), 0, NULL); 34 T_QUIET; T_ASSERT_LT(strlcat(path, "_helper", size), (unsigned long)size, NULL); 35 36 ret = posix_spawnattr_init(&spawnattr); 37 T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "posix_spawnattr_init"); 38 39 // 1) Run natively 40 41 ret = posix_spawn(&pid, path, NULL, &spawnattr, NULL, NULL); 42 T_ASSERT_EQ(ret, 0, "posix_spawn should succeed"); 43 ret = waitpid(pid, &wait_ret, 0); 44 T_QUIET; T_ASSERT_EQ(ret, pid, "child pid"); 45 T_QUIET; T_ASSERT_EQ(WIFEXITED(wait_ret), 1, "child process should have called exit()"); 46 T_ASSERT_EQ(WEXITSTATUS(wait_ret), 0, "running natively should return 0"); 47 48 // 2) Set archpref to run under Rosetta 49 50 ret = posix_spawnattr_setarchpref_np(&spawnattr, sizeof(cpuprefs) / sizeof(cpuprefs[0]), cpuprefs, subcpuprefs, NULL); 51 T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "posix_spawnattr_setarchpref_np"); 52 53 ret = posix_spawn(&pid, path, NULL, &spawnattr, NULL, NULL); 54 T_ASSERT_EQ(ret, 0, "posix_spawn should succeed"); 55 ret = waitpid(pid, &wait_ret, 0); 56 T_QUIET; T_ASSERT_EQ(ret, pid, "child pid"); 57 T_QUIET; T_ASSERT_EQ(WIFEXITED(wait_ret), 1, "child process should have called exit()"); 58 T_ASSERT_EQ(WEXITSTATUS(wait_ret), 1, "running in rosetta should return 1"); 59 60 // 3) Request alternative Rosetta runtime 61 62 ret = posix_spawnattr_set_alt_rosetta_np(&spawnattr, 0); 63 T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "posix_spawnattr_setarchpref_np"); 64 65 ret = posix_spawn(&pid, path, NULL, &spawnattr, NULL, NULL); 66 T_ASSERT_EQ(ret, 0, "posix_spawn should succeed"); 67 ret = waitpid(pid, &wait_ret, 0); 68 T_QUIET; T_ASSERT_EQ(ret, pid, "child pid"); 69 T_QUIET; T_ASSERT_EQ(WIFEXITED(wait_ret), 1, "child process should have called exit()"); 70 T_ASSERT_EQ(WEXITSTATUS(wait_ret), 2, "running with alternative rosetta runtime should return 2"); 71 72 ret = posix_spawnattr_destroy(&spawnattr); 73 T_QUIET; T_ASSERT_EQ(ret, 0, "posix_spawnattr_destroy"); 74 #else 75 T_SKIP("Not arm64 macOS"); 76 #endif 77 } 78