33 	int pid = os_getpid(), ppid = getppid();  in ptrace_child()  local
39 		kill(pid, SIGKILL);  in ptrace_child()
41 	kill(pid, SIGSTOP);  in ptrace_child()
49 	if (sc_result == pid)  in ptrace_child()
96 	int pid, n, status;  in start_ptraced_child()  local
98 	pid = fork();  in start_ptraced_child()
99 	if (pid == 0)  in start_ptraced_child()
101 	else if (pid < 0)  in start_ptraced_child()
104 	CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in start_ptraced_child()
111 	return pid;  in start_ptraced_child()
120 static int stop_ptraced_child(int pid, int exitcode, int mustexit)  in stop_ptraced_child()  argument
124 	if (ptrace(PTRACE_CONT, pid, 0, 0) < 0) {  in stop_ptraced_child()
128 	CATCH_EINTR(n = waitpid(pid, &status, 0));  in stop_ptraced_child()
204 	int pid, n, status, count=0;  in check_sysemu()  local
208 	pid = start_ptraced_child();  in check_sysemu()
210 	if (ptrace(PTRACE_SYSEMU, pid, 0, 0) < 0)  in check_sysemu()
213 	CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_sysemu()
220 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in check_sysemu()
228 	n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET, os_getpid());  in check_sysemu()
235 	if (stop_ptraced_child(pid, 0, 0) < 0)  in check_sysemu()
243 	pid = start_ptraced_child();  in check_sysemu()
245 	if ((ptrace(PTRACE_OLDSETOPTIONS, pid, 0,  in check_sysemu()
251 		if (ptrace(PTRACE_SYSEMU_SINGLESTEP, pid, 0, 0) < 0)  in check_sysemu()
253 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_sysemu()
264 			n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET,  in check_sysemu()
280 	if (stop_ptraced_child(pid, 0, 0) < 0)  in check_sysemu()
291 	stop_ptraced_child(pid, 1, 0);  in check_sysemu()
298 	int pid, syscall, n, status;  in check_ptrace()  local
301 	pid = start_ptraced_child();  in check_ptrace()
303 	if ((ptrace(PTRACE_OLDSETOPTIONS, pid, 0,  in check_ptrace()
308 		if (ptrace(PTRACE_SYSCALL, pid, 0, 0) < 0)  in check_ptrace()
311 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));  in check_ptrace()
320 		syscall = ptrace(PTRACE_PEEKUSER, pid, PT_SYSCALL_NR_OFFSET,  in check_ptrace()
323 			n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,  in check_ptrace()
331 	stop_ptraced_child(pid, 0, 1);  in check_ptrace()
361 	int pid;  in os_early_checks()  local
373 	pid = start_ptraced_child();  in os_early_checks()
374 	if (init_registers(pid))  in os_early_checks()
376 	stop_ptraced_child(pid, 1, 1);  in os_early_checks()
418 	int pid, n;  in check_skas3_ptrace_faultinfo()  local
421 	pid = start_ptraced_child();  in check_skas3_ptrace_faultinfo()
423 	n = ptrace(PTRACE_FAULTINFO, pid, 0, &fi);  in check_skas3_ptrace_faultinfo()
436 	stop_ptraced_child(pid, 1, 1);  in check_skas3_ptrace_faultinfo()
442 	int pid, n;  in check_skas3_ptrace_ldt()  local
450 	pid = start_ptraced_child();  in check_skas3_ptrace_ldt()
452 	n = ptrace(PTRACE_LDT, pid, 0, (unsigned long) &ldt_op);  in check_skas3_ptrace_ldt()
465 	stop_ptraced_child(pid, 1, 1);  in check_skas3_ptrace_ldt()