/* $NetBSD: jobs.h,v 1.23.2.1 2021/04/28 09:58:42 martin Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kenneth Almquist.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)jobs.h 8.2 (Berkeley) 5/4/95
*/
#include "output.h"
/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
#define FORK_FG 0
#define FORK_BG 1
#define FORK_NOJOB 2
/* mode flags for showjob(s) */
#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */
#define SHOW_MULTILINE 0x02 /* one line per process */
#define SHOW_PID 0x04 /* include process pid */
#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */
#define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */
#define SHOW_ISSIG 0x20 /* job was signalled */
#define SHOW_NO_FREE 0x40 /* do not free job */
/*
* A job structure contains information about a job. A job is either a
* single process or a set of processes contained in a pipeline. In the
* latter case, pidlist will be non-NULL, and will point to a -1 terminated
* array of pids.
*/
#define MAXCMDTEXT 200
struct procstat {
pid_t pid; /* process id */
int status; /* last process status from wait() */
char cmd[MAXCMDTEXT];/* text of command being run */
};
struct job {
struct procstat ps0; /* status of process */
struct procstat *ps; /* status or processes when more than one */
void *ref; /* temporary reference, used variously */
int nprocs; /* number of processes */
pid_t pgrp; /* process group of this job */
char state;
#define JOBRUNNING 0 /* at least one proc running */
#define JOBSTOPPED 1 /* all procs are stopped */
#define JOBDONE 2 /* all procs are completed */
char used; /* true if this entry is in used */
char flags;
#define JOBCHANGED 1 /* set if status has changed */
#define JOBWANTED 2 /* set if this is a job being sought */
#define JPIPEFAIL 4 /* set if -o pipefail when job created */
#if JOBS
char jobctl; /* job running under job control */
int prev_job; /* previous job index */
#endif
};
extern pid_t backgndpid; /* pid of last background process */
extern int job_warning; /* user was warned about stopped jobs */
void setjobctl(int);
void showjobs(struct output *, int);
struct job *makejob(union node *, int);
int forkshell(struct job *, union node *, int);
void forkchild(struct job *, union node *, int, int);
int forkparent(struct job *, union node *, int, pid_t);
int waitforjob(struct job *);
int stoppedjobs(void);
void commandtext(struct procstat *, union node *);
int getjobpgrp(const char *);
int anyjobs(void);
#if ! JOBS
#define setjobctl(on) /* do nothing */
#endif