root/include/uapi/linux/wait.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_WAIT_H
#define _UAPI_LINUX_WAIT_H

#define WNOHANG         0x00000001
#define WUNTRACED       0x00000002
#define WSTOPPED        WUNTRACED
#define WEXITED         0x00000004
#define WCONTINUED      0x00000008
#define WNOWAIT         0x01000000      /* Don't reap, just poll status.  */

#define __WNOTHREAD     0x20000000      /* Don't wait on children of other threads in this group */
#define __WALL          0x40000000      /* Wait on all children, regardless of type */
#define __WCLONE        0x80000000      /* Wait only on non-SIGCHLD children */

/* First argument to waitid: */
#define P_ALL           0
#define P_PID           1
#define P_PGID          2
#define P_PIDFD         3


#endif /* _UAPI_LINUX_WAIT_H */