32 	int pid = os_getpid(), ppid = getppid();  in ptrace_child()  local
38 		kill(pid, SIGKILL);  in ptrace_child()
40 	kill(pid, SIGSTOP);  in ptrace_child()
48 	if (sc_result == pid)  in ptrace_child()
95 	int pid, n, status;  in start_ptraced_child()  local
99 	pid = fork();  in start_ptraced_child()
100 	if (pid == 0)  in start_ptraced_child()
102 	else if (pid < 0)  in start_ptraced_child()
105 	CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in start_ptraced_child()
112 	return pid;  in start_ptraced_child()
121 static int stop_ptraced_child(int pid, int exitcode, int mustexit)  in stop_ptraced_child()  argument
125 	if (ptrace(PTRACE_CONT, pid, 0, 0) < 0) {  in stop_ptraced_child()
129 	CATCH_EINTR(n = waitpid(pid, &status, 0));  in stop_ptraced_child()
167 	int pid, n, status, count=0;  in check_sysemu()  local
171 	pid = start_ptraced_child();  in check_sysemu()
173 	if (ptrace(PTRACE_SYSEMU, pid, 0, 0) < 0)  in check_sysemu()
176 	CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_sysemu()
183 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in check_sysemu()
191 	n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET, os_getpid());  in check_sysemu()
198 	if (stop_ptraced_child(pid, 0, 0) < 0)  in check_sysemu()
206 	pid = start_ptraced_child();  in check_sysemu()
208 	if ((ptrace(PTRACE_OLDSETOPTIONS, pid, 0,  in check_sysemu()
214 		if (ptrace(PTRACE_SYSEMU_SINGLESTEP, pid, 0, 0) < 0)  in check_sysemu()
216 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_sysemu()
227 			n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET,  in check_sysemu()
243 	if (stop_ptraced_child(pid, 0, 0) < 0)  in check_sysemu()
254 	stop_ptraced_child(pid, 1, 0);  in check_sysemu()
261 	int pid, syscall, n, status;  in check_ptrace()  local
264 	pid = start_ptraced_child();  in check_ptrace()
266 	if ((ptrace(PTRACE_OLDSETOPTIONS, pid, 0,  in check_ptrace()
271 		if (ptrace(PTRACE_SYSCALL, pid, 0, 0) < 0)  in check_ptrace()
274 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_ptrace()
283 		syscall = ptrace(PTRACE_PEEKUSER, pid, PT_SYSCALL_NR_OFFSET,  in check_ptrace()
286 			n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,  in check_ptrace()
294 	stop_ptraced_child(pid, 0, 1);  in check_ptrace()
358 	int pid;  in os_early_checks()  local
370 	pid = start_ptraced_child();  in os_early_checks()
371 	if (init_pid_registers(pid))  in os_early_checks()
373 	stop_ptraced_child(pid, 1, 1);  in os_early_checks()