32 int is_skas_winch(int pid, int fd, void *data)  in is_skas_winch()  argument
34 	return pid == getpgrp();  in is_skas_winch()
85 static int ptrace_dump_regs(int pid)  in ptrace_dump_regs()  argument
90 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in ptrace_dump_regs()
112 void wait_stub_done(int pid)  in wait_stub_done()  argument
117 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in wait_stub_done()
124 		err = ptrace(PTRACE_CONT, pid, 0, 0);  in wait_stub_done()
136 	err = ptrace_dump_regs(pid);  in wait_stub_done()
141 	       __func__, pid, n, errno, status);  in wait_stub_done()
147 static void get_skas_faultinfo(int pid, struct faultinfo *fi)  in get_skas_faultinfo()  argument
151 	err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);  in get_skas_faultinfo()
154 		       "errno = %d\n", pid, errno);  in get_skas_faultinfo()
157 	wait_stub_done(pid);  in get_skas_faultinfo()
166 static void handle_segv(int pid, struct uml_pt_regs *regs)  in handle_segv()  argument
168 	get_skas_faultinfo(pid, &regs->faultinfo);  in handle_segv()
172 static void handle_trap(int pid, struct uml_pt_regs *regs)  in handle_trap()  argument
335 	int pid, status, n, err;  in start_userspace()  local
352 	pid = clone(userspace_tramp, (void *) sp,  in start_userspace()
355 	if (pid < 0) {  in start_userspace()
363 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in start_userspace()
379 	if (ptrace(PTRACE_SETOPTIONS, pid, NULL,  in start_userspace()
394 	return pid;  in start_userspace()
397 	os_kill_ptraced_process(pid, 1);  in start_userspace()
406 	int err, status, op, pid = userspace_pid[0];  in userspace()  local
459 		if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {  in userspace()
465 		if (put_fp_registers(pid, regs->fp)) {  in userspace()
476 		if (ptrace(op, pid, 0, 0)) {  in userspace()
482 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in userspace()
490 		if (ptrace(PTRACE_GETREGS, pid, 0, regs->gp)) {  in userspace()
496 		if (get_fp_registers(pid, regs->fp)) {  in userspace()
518 				ptrace(PTRACE_GETSIGINFO, pid, 0, (struct siginfo *)&si);  in userspace()
525 					get_skas_faultinfo(pid,  in userspace()
530 				else handle_segv(pid, regs);  in userspace()
533 				handle_trap(pid, regs);  in userspace()
554 			pid = userspace_pid[0];  in userspace()
682 	userspace_pid[0] = mm_idp->pid;  in __switch_mm()