/* SPDX-License-Identifier: LGPL-2.1 OR MIT *//* * wait definitions for NOLIBC * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu> */ /* make sure to include all global symbols */#include "../nolibc.h" #ifndef _NOLIBC_SYS_WAIT_H#define _NOLIBC_SYS_WAIT_H #include "../arch.h"#include "../std.h"#include "../types.h" /* * pid_t wait(int *status); * pid_t waitpid(pid_t pid, int *status, int options); * int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options); */ static __attribute__((unused))int _sys_waitid(int which, pid_t pid, siginfo_t *infop, int options, struct rusage *rusage){	return __nolibc_syscall5(__NR_waitid, which, pid, infop, options, rusage);} static __attribute__((unused))int waitid(int which, pid_t pid, siginfo_t *infop, int options){	return __sysret(_sys_waitid(which, pid, infop, options, NULL));}  static __attribute__((unused))pid_t waitpid(pid_t pid, int *status, int options){	int idtype, ret;	siginfo_t info;	pid_t id; 	if (pid == INT_MIN) {		SET_ERRNO(ESRCH);		return -1;	} else if (pid < -1) {		idtype = P_PGID;		id = -pid;	} else if (pid == -1) {		idtype = P_ALL;		id = 0;	} else if (pid == 0) {		idtype = P_PGID;		id = 0;	} else {		idtype = P_PID;		id = pid;	} 	options |= WEXITED; 	ret = waitid(idtype, id, &info, options);	if (ret)		return -1; 	switch (info.si_code) {	case 0:		if (status)			*status = 0;		break;	case CLD_EXITED:		if (status)			*status = (info.si_status & 0xff) << 8;		break;	case CLD_KILLED:		if (status)			*status = info.si_status & 0x7f;		break;	case CLD_DUMPED:		if (status)			*status = (info.si_status & 0x7f) | 0x80;		break;	case CLD_STOPPED:	case CLD_TRAPPED:		if (status)			*status = (info.si_status << 8) + 0x7f;		break;	case CLD_CONTINUED:		if (status)			*status = 0xffff;		break;	default:		return -1;	} 	return info.si_pid;} static __attribute__((unused))pid_t wait(int *status){	return waitpid(-1, status, 0);} #endif /* _NOLIBC_SYS_WAIT_H */