sh: Fix duplicate prototypes for builtins.
[dragonfly.git] / bin / sh / jobs.h
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1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)jobs.h 8.2 (Berkeley) 5/4/95
c3e3bc7a 37 * $FreeBSD: src/bin/sh/jobs.h,v 1.21 2011/06/13 21:03:27 jilles Exp $
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38 */
39
40/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
41#define FORK_FG 0
42#define FORK_BG 1
43#define FORK_NOJOB 2
44
45#include <signal.h> /* for sig_atomic_t */
46
47/*
48 * A job structure contains information about a job. A job is either a
49 * single process or a set of processes contained in a pipeline. In the
50 * latter case, pidlist will be non-NULL, and will point to a -1 terminated
51 * array of pids.
52 */
53
54struct procstat {
55 pid_t pid; /* process id */
56 int status; /* status flags (defined above) */
57 char *cmd; /* text of command being run */
58};
59
60
61/* states */
62#define JOBSTOPPED 1 /* all procs are stopped */
63#define JOBDONE 2 /* all procs are completed */
64
65
66struct job {
67 struct procstat ps0; /* status of process */
68 struct procstat *ps; /* status or processes when more than one */
69 short nprocs; /* number of processes */
70 pid_t pgrp; /* process group of this job */
71 char state; /* true if job is finished */
72 char used; /* true if this entry is in used */
73 char changed; /* true if status has changed */
74 char foreground; /* true if running in the foreground */
99512ac4 75 char remembered; /* true if $! referenced */
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76#if JOBS
77 char jobctl; /* job running under job control */
78 struct job *next; /* job used after this one */
79#endif
80};
81
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82enum {
83 SHOWJOBS_DEFAULT, /* job number, status, command */
84 SHOWJOBS_VERBOSE, /* job number, PID, status, command */
85 SHOWJOBS_PIDS, /* PID only */
86 SHOWJOBS_PGIDS /* PID of the group leader only */
87};
88
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89extern int job_warning; /* user was warned about stopped jobs */
90extern int in_waitcmd; /* are we in waitcmd()? */
91extern int in_dowait; /* are we in dowait()? */
92extern volatile sig_atomic_t breakwaitcmd; /* break wait to process traps? */
93
94void setjobctl(int);
9d7989de 95void showjobs(int, int);
99512ac4 96pid_t getjobpgrp(char *);
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97struct job *makejob(union node *, int);
98pid_t forkshell(struct job *, union node *, int);
99int waitforjob(struct job *, int *);
100int stoppedjobs(void);
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101int backgndpidset(void);
102pid_t backgndpidval(void);
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103char *commandtext(union node *);
104
105#if ! JOBS
106#define setjobctl(on) /* do nothing */
107#endif