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. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/* Mode argument to forkshell.  Don't change FORK_FG or FORK_BG. */
34#define FORK_FG 0
35#define FORK_BG 1
36#define FORK_NOJOB 2
37
38#include <signal.h>		/* for sig_atomic_t */
39
40struct job;
41
42enum {
43	SHOWJOBS_DEFAULT,	/* job number, status, command */
44	SHOWJOBS_VERBOSE,	/* job number, PID, status, command */
45	SHOWJOBS_PIDS,		/* PID only */
46	SHOWJOBS_PGIDS		/* PID of the group leader only */
47};
48
49extern int job_warning;		/* user was warned about stopped jobs */
50
51void setjobctl(int);
52void showjobs(int, int);
53struct job *makejob(union node *, int);
54pid_t forkshell(struct job *, union node *, int);
55pid_t vforkexecshell(struct job *, char **, char **, const char *, int, int [2]);
56int waitforjob(struct job *, int *);
57int stoppedjobs(void);
58int backgndpidset(void);
59pid_t backgndpidval(void);
60char *commandtext(union node *);
61
62#if ! JOBS
63#define setjobctl(on)	/* do nothing */
64#endif
65