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      1 /* $NetBSD: proc.h,v 1.15 2020/04/03 18:11:29 joerg 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)proc.h	8.1 (Berkeley) 5/31/93
     32  */
     33 
     34 #ifndef _PROC_H_
     35 #define _PROC_H_
     36 
     37 /*
     38  * Structure for each process the shell knows about:
     39  *	allocated and filled by pcreate.
     40  *	flushed by pflush; freeing always happens at top level
     41  *	    so the interrupt level has less to worry about.
     42  *	processes are related to "friends" when in a pipeline;
     43  *	    p_friends links makes a circular list of such jobs
     44  */
     45 struct process {
     46     struct process *p_next;	/* next in global "proclist" */
     47     struct process *p_friends;	/* next in job list (or self) */
     48     struct directory *p_cwd;	/* cwd of the job (only in head) */
     49     int p_flags;		/* various job status flags */
     50     int p_reason;		/* reason for entering this state */
     51     int p_index;		/* shorthand job index */
     52     pid_t p_pid;
     53     pid_t p_jobid;		/* pid of job leader */
     54     /* if a job is stopped/background p_jobid gives its pgrp */
     55     struct timespec p_btime;	/* begin time */
     56     struct timespec p_etime;	/* end time */
     57     struct rusage p_rusage;
     58     Char *p_command;		/* first PMAXLEN chars of command */
     59 };
     60 
     61 /* flag values for p_flags */
     62 #define	PRUNNING	(1<<0)	/* running */
     63 #define	PSTOPPED	(1<<1)	/* stopped */
     64 #define	PNEXITED	(1<<2)	/* normally exited */
     65 #define	PAEXITED	(1<<3)	/* abnormally exited */
     66 #define	PSIGNALED	(1<<4)	/* terminated by a signal != SIGINT */
     67 #define	PNOTIFY		(1<<5)	/* notify async when done */
     68 #define	PTIME		(1<<6)	/* job times should be printed */
     69 #define	PAWAITED	(1<<7)	/* top level is waiting for it */
     70 #define	PFOREGND	(1<<8)	/* started in shells pgrp */
     71 #define	PDUMPED		(1<<9)	/* process dumped core */
     72 #define	PERR		(1<<10)	/* diagnostic output also piped out */
     73 #define	PPOU		(1<<11)	/* piped output */
     74 #define	PREPORTED	(1<<12)	/* status has been reported */
     75 #define	PINTERRUPTED	(1<<13)	/* job stopped via interrupt signal */
     76 #define	PPTIME		(1<<14)	/* time individual process */
     77 #define	PNEEDNOTE	(1<<15)	/* notify as soon as practical */
     78 
     79 #define	PALLSTATES	(PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
     80 
     81 #define	PMAXLEN		80
     82 
     83 /* defines for arguments to pprint */
     84 #define	NUMBER		01
     85 #define	NAME		02
     86 #define	REASON		04
     87 #define	AMPERSAND	010
     88 #define	FANCY		020
     89 #define	SHELLDIR	040	/* print shell's dir if not the same */
     90 #define	JOBDIR		0100	/* print job's dir if not the same */
     91 #define	AREASON		0200
     92 
     93 extern struct process proclist;	/* list head of all processes */
     94 extern int pnoprocesses;	/* pchild found nothing to wait for */
     95 
     96 extern struct process *pholdjob; /* one level stack of current jobs */
     97 
     98 extern struct process *pcurrjob; /* current job */
     99 extern struct process *pcurrent; /* current job in table */
    100 extern struct process *pprevious; /* previous job in table */
    101 
    102 extern int pmaxindex;		/* current maximum job index */
    103 
    104 #endif /* !_PROC_H_ */
    105