int main(int argc, char *argv[]) {
pid_t child = 0;
siginfo_t sig;
if (argc != 3) {
errx(EXIT_FAILURE, "usage: %s pid tracer_buff_address\n", argv[0]);
}
dump_prefix = getenv("CERE_WORKING_PATH");
if(!dump_prefix) {
debug_print("%s\n", "CERE_WORKING_PATH not defined, using defaut cere dir.\n");
dump_prefix = ".cere";
}
char * ft = getenv("CERE_FIRSTTOUCH");
if (ft && strcmp("TRUE", ft) == 0) {
firsttouch_active = true;
debug_print("%s\n", "First touch capture is active");
}
child = atoi(argv[1]);
sscanf(argv[2], "%p", &tracer_buff);
tracer_init(child);
/* Wait for lock_mem trap */
pid_t tid = handle_events_until_dump_trap(-1);
register_t ret = get_arg_from_regs(tid);
assert(ret == TRAP_LOCK_MEM);
stop_all_except(tid);
tracer_lock_mem(tid);
debug_print("%s\n", "******* TRACER_LOCKED");
tracer_state = TRACER_LOCKED;
continue_all();
/* Dump arguments */
tracer_dump(tid);
debug_print("%s\n", "******* TRACER_DUMPING");
tracer_state = TRACER_DUMPING;
ptrace_syscall(tid);
while (1) {
handle_events_until_dump_trap(-1);
}
}
static void tracer_init(pid_t pid) {
PAGESIZE = sysconf(_SC_PAGESIZE);
event_t e = wait_event(pid);
assert(e.signo == SIGSTOP);
follow_threads(pid);
create_dump_dir();
debug_print("%s\n", "Tracer initialized");
if (firsttouch_active) {
htable_init(&firsttouch, rehash, NULL);
stop_all_except(pid);
tracer_lock_mem(pid);
debug_print("%s\n", "******* TRACER_FIRSTTOUCH");
tracer_state = TRACER_FIRSTTOUCH;
} else {
debug_print("%s\n", "******* TRACER_UNLOCKED");
tracer_state = TRACER_UNLOCKED;
}
continue_all();
}
static void stop_application()
{
continue_all(screen);
g_main_loop_unref(loop);
exit(0);
}
