* Startup process 1 and do the essential works */
| 47 | * Startup process 1 and do the essential works |
| 48 | */ |
| 49 | static int lwp_startup(void) |
| 50 | { |
| 51 | int error; |
| 52 | |
| 53 | const char *init_path; |
| 54 | char *argv[] = {0, "&"}; |
| 55 | char *envp[] = {LWP_CONSOLE_PATH, 0}; |
| 56 | |
| 57 | #ifdef LWP_DEBUG_INIT |
| 58 | int command; |
| 59 | int countdown = LATENCY_TIMES; |
| 60 | while (countdown) |
| 61 | { |
| 62 | command = lwp_startup_debug_request(); |
| 63 | if (command) |
| 64 | { |
| 65 | return 0; |
| 66 | } |
| 67 | rt_kprintf("Press any key to stop init process startup ... %d\n", countdown); |
| 68 | countdown -= 1; |
| 69 | rt_thread_mdelay(LATENCY_IN_MSEC); |
| 70 | } |
| 71 | rt_kprintf("Starting init ...\n"); |
| 72 | #endif /* LWP_DEBUG_INIT */ |
| 73 | |
| 74 | for (size_t i = 0; i < sizeof(init_search_path)/sizeof(init_search_path[0]); i++) |
| 75 | { |
| 76 | struct stat s; |
| 77 | init_path = init_search_path[i]; |
| 78 | error = stat(init_path, &s); |
| 79 | if (error == 0) |
| 80 | { |
| 81 | argv[0] = (void *)init_path; |
| 82 | error = lwp_execve((void *)init_path, 0, sizeof(argv)/sizeof(argv[0]), argv, envp); |
| 83 | if (error < 0) |
| 84 | { |
| 85 | LOG_W("%s: failed to setup runtime environment\b" |
| 86 | "\tlwp_execve() failed with code %d", __func__, error); |
| 87 | } |
| 88 | else if (error != 1) |
| 89 | { |
| 90 | LOG_W("%s: pid 1 is already allocated", __func__); |
| 91 | error = -EBUSY; |
| 92 | } |
| 93 | else |
| 94 | { |
| 95 | rt_lwp_t p = lwp_from_pid_locked(1); |
| 96 | p->sig_protected = 1; |
| 97 | |
| 98 | error = 0; |
| 99 | } |
| 100 | break; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | if (error) |
| 105 | { |
| 106 | LOG_D("%s: failed to setup runtime environment\b" |
nothing calls this directly
no test coverage detected