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proc.h revision 1.7 
      1 /*	$NetBSD: proc.h,v 1.7 1995/04/29 23:21:35 mycroft Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)proc.h	8.1 (Berkeley) 5/31/93
     36  */
     37 
     38 /*
     39  * Structure for each process the shell knows about:
     40  *	allocated and filled by pcreate.
     41  *	flushed by pflush; freeing always happens at top level
     42  *	    so the interrupt level has less to worry about.
     43  *	processes are related to "friends" when in a pipeline;
     44  *	    p_friends links makes a circular list of such jobs
     45  */
     46 struct process {
     47     struct process *p_next;	/* next in global "proclist" */
     48     struct process *p_friends;	/* next in job list (or self) */
     49     struct directory *p_cwd;	/* cwd of the job (only in head) */
     50     short unsigned p_flags;	/* various job status flags */
     51     char    p_reason;		/* reason for entering this state */
     52     int     p_index;		/* shorthand job index */
     53     pid_t   p_pid;
     54     pid_t   p_jobid;		/* pid of job leader */
     55     /* if a job is stopped/background p_jobid gives its pgrp */
     56     struct timeval p_btime;	/* begin time */
     57     struct timeval p_etime;	/* end time */
     58     struct rusage p_rusage;
     59     Char   *p_command;		/* first PMAXLEN chars of command */
     60 };
     61 
     62 /* flag values for p_flags */
     63 #define	PRUNNING	(1<<0)	/* running */
     64 #define	PSTOPPED	(1<<1)	/* stopped */
     65 #define	PNEXITED	(1<<2)	/* normally exited */
     66 #define	PAEXITED	(1<<3)	/* abnormally exited */
     67 #define	PSIGNALED	(1<<4)	/* terminated by a signal != SIGINT */
     68 
     69 #define	PALLSTATES	(PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
     70 #define	PNOTIFY		(1<<5)	/* notify async when done */
     71 #define	PTIME		(1<<6)	/* job times should be printed */
     72 #define	PAWAITED	(1<<7)	/* top level is waiting for it */
     73 #define	PFOREGND	(1<<8)	/* started in shells pgrp */
     74 #define	PDUMPED		(1<<9)	/* process dumped core */
     75 #define	PERR		(1<<10)	/* diagnostic output also piped out */
     76 #define	PPOU		(1<<11)	/* piped output */
     77 #define	PREPORTED	(1<<12)	/* status has been reported */
     78 #define	PINTERRUPTED	(1<<13)	/* job stopped via interrupt signal */
     79 #define	PPTIME		(1<<14)	/* time individual process */
     80 #define	PNEEDNOTE	(1<<15)	/* notify as soon as practical */
     81 
     82 #define	PMAXLEN		80
     83 
     84 /* defines for arguments to pprint */
     85 #define	NUMBER		01
     86 #define	NAME		02
     87 #define	REASON		04
     88 #define	AMPERSAND	010
     89 #define	FANCY		020
     90 #define	SHELLDIR	040	/* print shell's dir if not the same */
     91 #define	JOBDIR		0100	/* print job's dir if not the same */
     92 #define	AREASON		0200
     93 
     94 struct process proclist;	/* list head of all processes */
     95 bool    pnoprocesses;		/* pchild found nothing to wait for */
     96 
     97 struct process *pholdjob;	/* one level stack of current jobs */
     98 
     99 struct process *pcurrjob;	/* current job */
    100 struct process *pcurrent;	/* current job in table */
    101 struct process *pprevious;	/* previous job in table */
    102 
    103 int    pmaxindex;		/* current maximum job index */
    104