/*      $NetBSD: jobs.h,v 1.28 2026/05/18 16:40:00 kre 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 */
#define SHOW_PROCTITLE  0x80    /* set the process title */


/*
 * 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, sigset_t *);
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);
void jobstarted(struct job *);

#if ! JOBS
#define setjobctl(on)   /* do nothing */
#endif