Home | History | Annotate | Download | only in csh
      1     0    stevel /*
      2   200       raf  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
      3     0    stevel  * Use is subject to license terms.
      4   200       raf  */
      5   200       raf 
      6   200       raf /*
      7     0    stevel  *
      8     0    stevel  *	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
      9     0    stevel  *	  All Rights Reserved
     10     0    stevel  *
     11     0    stevel  * Copyright (c) 1980 Regents of the University of California.
     12     0    stevel  * All rights reserved.  The Berkeley Software License Agreement
     13     0    stevel  * specifies the terms and conditions for redistribution.
     14     0    stevel  */
     15     0    stevel 
     16     0    stevel #pragma ident	"%Z%%M%	%I%	%E% SMI"
     17     0    stevel 
     18     0    stevel /*
     19  3517  mp204432  * This file holds definitions relevant to the wait system call.
     20     0    stevel  * Some of the options here are available only through the ``wait3''
     21     0    stevel  * entry point; the old entry point with one argument has more fixed
     22     0    stevel  * semantics, never returning status of unstopped children, hanging until
     23     0    stevel  * a process terminates if any are outstanding, and never returns
     24     0    stevel  * detailed information about process resource utilization (<vtimes.h>).
     25     0    stevel  */
     26     0    stevel 
     27     0    stevel #ifndef _sys_wait_h
     28   200       raf #define	_sys_wait_h
     29     0    stevel 
     30   200       raf #include <sys/isa_defs.h>	/* included for _LITTLE_ENDIAN define	*/
     31     0    stevel 
     32     0    stevel /*
     33     0    stevel  * Structure of the information in the first word returned by both
     34     0    stevel  * wait and wait3.  If w_stopval==WSTOPPED, then the second structure
     35     0    stevel  * describes the information returned, else the first.  See WUNTRACED below.
     36     0    stevel  */
     37     0    stevel union wait	{
     38     0    stevel 	int	w_status;		/* used in syscall */
     39     0    stevel 	/*
     40     0    stevel 	 * Terminated process status.
     41     0    stevel 	 */
     42     0    stevel 	struct {
     43     0    stevel #if	defined(_LITTLE_ENDIAN)
     44     0    stevel 		unsigned short	w_Termsig:7;	/* termination signal */
     45     0    stevel 		unsigned short	w_Coredump:1;	/* core dump indicator */
     46     0    stevel 		unsigned short	w_Retcode:8;	/* exit code if w_termsig==0 */
     47     0    stevel #elif	defined(_BIG_ENDIAN)
     48     0    stevel 		unsigned short	w_Fill1:16;	/* high 16 bits unused */
     49     0    stevel 		unsigned short	w_Retcode:8;	/* exit code if w_termsig==0 */
     50     0    stevel 		unsigned short	w_Coredump:1;	/* core dump indicator */
     51     0    stevel 		unsigned short	w_Termsig:7;	/* termination signal */
     52     0    stevel #else
     53     0    stevel #error	NO ENDIAN defined.
     54     0    stevel #endif
     55     0    stevel 	} w_T;
     56     0    stevel 	/*
     57     0    stevel 	 * Stopped process status.  Returned
     58     0    stevel 	 * only for traced children unless requested
     59     0    stevel 	 * with the WUNTRACED option bit.
     60     0    stevel 	 */
     61     0    stevel 	struct {
     62     0    stevel #if	defined(_LITTLE_ENDIAN)
     63     0    stevel 		unsigned short	w_Stopval:8;	/* == W_STOPPED if stopped */
     64     0    stevel 		unsigned short	w_Stopsig:8;	/* signal that stopped us */
     65     0    stevel #elif	defined(_BIG_ENDIAN)
     66     0    stevel 		unsigned short	w_Fill2:16;	/* high 16 bits unused */
     67     0    stevel 		unsigned short	w_Stopsig:8;	/* signal that stopped us */
     68     0    stevel 		unsigned short	w_Stopval:8;	/* == W_STOPPED if stopped */
     69     0    stevel #else
     70     0    stevel #error	NO ENDIAN defined.
     71     0    stevel #endif
     72     0    stevel 	} w_S;
     73     0    stevel };
     74     0    stevel #define	w_termsig	w_T.w_Termsig
     75   200       raf #define	w_coredump	w_T.w_Coredump
     76   200       raf #define	w_retcode	w_T.w_Retcode
     77   200       raf #define	w_stopval	w_S.w_Stopval
     78   200       raf #define	w_stopsig	w_S.w_Stopsig
     79     0    stevel 
     80     0    stevel 
     81     0    stevel #define	WSTOPPED	0177	/* value of s.stopval if process is stopped */
     82   200       raf #define	WCONTFLG	0177777	/* value of w.w_status due to SIGCONT, sysV */
     83     0    stevel 
     84     0    stevel /*
     85     0    stevel  * Option bits for the second argument of wait3.  WNOHANG causes the
     86     0    stevel  * wait to not hang if there are no stopped or terminated processes, rather
     87     0    stevel  * returning an error indication in this case (pid==0).  WUNTRACED
     88     0    stevel  * indicates that the caller should receive status about untraced children
     89     0    stevel  * which stop due to signals.  If children are stopped and a wait without
     90     0    stevel  * this option is done, it is as though they were still running... nothing
     91     0    stevel  * about them is returned.
     92     0    stevel  */
     93   200       raf #define	WNOHANG		1	/* dont hang in wait */
     94   200       raf #define	WUNTRACED	2	/* tell about stopped, untraced children */
     95     0    stevel 
     96   200       raf #define	WIFSTOPPED(x)	((x).w_stopval == WSTOPPED)
     97   200       raf #define	WIFSIGNALED(x)	((x).w_stopval != WSTOPPED && (x).w_termsig != 0)
     98   200       raf #define	WIFEXITED(x)	((x).w_stopval != WSTOPPED && (x).w_termsig == 0)
     99     0    stevel 
    100   200       raf extern pid_t csh_wait3(union wait *w, int options, struct rusage *rp);
    101   200       raf extern pid_t csh_wait_noreap(void);
    102     0    stevel 
    103   200       raf #endif /* _sys_wait_h */
    104