296 static int ptrace_attach(struct task_struct *task, long request,  in ptrace_attach()  argument
300 	bool seize = (request == PTRACE_SEIZE);  in ptrace_attach()
702 #define is_singlestep(request)		((request) == PTRACE_SINGLESTEP)  argument
704 #define is_singlestep(request)		0  argument
708 #define is_singleblock(request)		((request) == PTRACE_SINGLEBLOCK)  argument
710 #define is_singleblock(request)		0  argument
714 #define is_sysemu_singlestep(request)	((request) == PTRACE_SYSEMU_SINGLESTEP)  argument
716 #define is_sysemu_singlestep(request)	0  argument
719 static int ptrace_resume(struct task_struct *child, long request,  in ptrace_resume()  argument
727 	if (request == PTRACE_SYSCALL)  in ptrace_resume()
733 	if (request == PTRACE_SYSEMU || request == PTRACE_SYSEMU_SINGLESTEP)  in ptrace_resume()
739 	if (is_singleblock(request)) {  in ptrace_resume()
743 	} else if (is_singlestep(request) || is_sysemu_singlestep(request)) {  in ptrace_resume()
822 int ptrace_request(struct task_struct *child, long request,  in ptrace_request()  argument
832 	switch (request) {  in ptrace_request()
1003 		return ptrace_resume(child, request, data);  in ptrace_request()
1008 		return ptrace_resume(child, request, SIGKILL);  in ptrace_request()
1023 		ret = ptrace_regset(child, request, addr, &kiov);  in ptrace_request()
1055 SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr,  in SYSCALL_DEFINE4()  argument
1061 	if (request == PTRACE_TRACEME) {  in SYSCALL_DEFINE4()
1074 	if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {  in SYSCALL_DEFINE4()
1075 		ret = ptrace_attach(child, request, addr, data);  in SYSCALL_DEFINE4()
1085 	ret = ptrace_check_attach(child, request == PTRACE_KILL ||  in SYSCALL_DEFINE4()
1086 				  request == PTRACE_INTERRUPT);  in SYSCALL_DEFINE4()
1090 	ret = arch_ptrace(child, request, addr, data);  in SYSCALL_DEFINE4()
1091 	if (ret || request != PTRACE_DETACH)  in SYSCALL_DEFINE4()
1123 int compat_ptrace_request(struct task_struct *child, compat_long_t request,  in compat_ptrace_request()  argument
1131 	switch (request) {  in compat_ptrace_request()
1187 		ret = ptrace_regset(child, request, addr, &kiov);  in compat_ptrace_request()
1195 		ret = ptrace_request(child, request, addr, data);  in compat_ptrace_request()
1201 COMPAT_SYSCALL_DEFINE4(ptrace, compat_long_t, request, compat_long_t, pid,  in COMPAT_SYSCALL_DEFINE4()  argument
1207 	if (request == PTRACE_TRACEME) {  in COMPAT_SYSCALL_DEFINE4()
1218 	if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {  in COMPAT_SYSCALL_DEFINE4()
1219 		ret = ptrace_attach(child, request, addr, data);  in COMPAT_SYSCALL_DEFINE4()
1229 	ret = ptrace_check_attach(child, request == PTRACE_KILL ||  in COMPAT_SYSCALL_DEFINE4()
1230 				  request == PTRACE_INTERRUPT);  in COMPAT_SYSCALL_DEFINE4()
1232 		ret = compat_arch_ptrace(child, request, addr, data);  in COMPAT_SYSCALL_DEFINE4()
1233 		if (ret || request != PTRACE_DETACH)  in COMPAT_SYSCALL_DEFINE4()