static int exec(int argc, char **argv) {
pid_t pid;
int r;
int bg = 0;
if (argc < 2 || (argc > 2 && argv[2][0] != '&')) {
printf("Usage: exec filename [&]\n");
return 1;
}
if ((argc > 2) && (argv[2][0] == '&')) {
bg = 1;
}
if (bg == 0) {
r = close(in);
assert(r == 0);
}
pid = sos_process_create(argv[1]);
if (pid >= 0) {
printf("Child pid=%d\n", pid);
if (bg == 0) {
sos_process_wait(pid);
}
} else {
printf("Failed!\n");
}
if (bg == 0) {
in = open("console", O_RDONLY);
assert(in >= 0);
}
return 0;
}
int main() {
/* Implementation defined. Set this to your initial id. */
if (sos_my_id() != 0) {
printf("I am a child with pid: %d.\n", sos_my_id());
/* Try to delete our parent. Once again this is implementation defined.*/
assert(sos_process_delete(sos_my_id() - 1) == -1);
assert(sos_process_wait(sos_my_id() - 1) == -1);
printf("Child test exited successfully.\n");
return 0;
}
printf("Running timer error tests.\n");
timer_errors();
printf("Timer error tests passed.\n");
printf("Running file error tests.\n");
file_errors();
printf("File error tests passed.\n");
printf("Running memory error tests.\n");
printf("Warning: Here be implementation specific dragons.\n");
memory_errors();
printf("Memory error tests passed.\n");
printf("Running process error tests.\n");
process_errors();
printf("Process error tests passed.\n");
// TODO(karl): Write share vm tests.
printf("Running crash tests. You need to manually comment out individual lines.\n");
crash_errors();
assert(!"Crash tests failed you should never get here!\n");
return 0;
}
void process_errors() {
char path[2 * MAX_PATH_LENGTH];
for (int i = 0; i < 2 * MAX_PATH_LENGTH; i++) {
path[i] = 'a';
}
assert(sos_process_create(NULL) == -1);
assert(sos_process_create((char *)1000) == -1);
assert(sos_process_create((char *)~0) == -1);
assert(sos_process_create("") == -1);
assert(sos_process_create("non_existant_process") == -1);
assert(sos_process_create(path) == -1);
path[MAX_PATH_LENGTH] = '\0';
assert(sos_process_create(path) == -1);
assert(sos_process_delete(-1) == -1);
assert(sos_process_delete(INT_MIN) == -1);
assert(sos_process_delete(INT_MAX) == -1);
assert(sos_process_delete(sos_my_id() + 1) == -1);
sos_process_t process_buff[100];
/* Not an error but a corner case. */
assert(sos_process_status(process_buff, 0) == 0);
assert(sos_process_status(process_buff, 100) == 1);
assert(sos_process_status(NULL, 100) == 0);
assert(sos_process_status((void *)1000, 100) == 0);
assert(sos_process_status((void *)~0, 100) == 0);
assert(sos_process_status(sbrk(0), 1) == 0);
assert(sos_process_status((void *)"read only string", 1) == 0);
assert(sos_process_wait(sos_my_id() + 1) == -1);
assert(sos_process_wait(INT_MIN) == -1);
assert(sos_process_wait(INT_MAX) == -1);
/* Implementation defined this might be allowed behaviour. */
assert(sos_process_wait(sos_my_id()) == -1);
pid_t pid = sos_process_create("error_test");
assert(pid != -1);
assert(sos_process_wait(pid) == pid);
assert(sos_process_wait(pid) == -1);
pid = sos_process_create("error_test");
assert(pid != -1);
assert(sos_process_delete(pid) == 0);
assert(sos_process_delete(pid) == -1);
pid = sos_process_create("error_test");
assert(pid != -1);
assert(sos_process_delete(pid) == 0);
assert(sos_process_wait(pid) == -1);
pid = sos_process_create("error_test");
assert(pid != -1);
assert(sos_process_wait(pid) == pid);
assert(sos_process_delete(pid) == -1);
pid = sos_process_create("error_test");
assert(pid != -1);
sos_sys_usleep(10000);
assert(sos_process_create("error_test") != pid);
assert(sos_process_wait(pid) == pid);
}
