xref: /freebsd/bin/sh/jobs.h (revision b97ee269eae3cbaf35c18f51a459aea581c2a7dc)
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  *	@(#)jobs.h	8.2 (Berkeley) 5/4/95
33  * $FreeBSD$
34  */
35 
36 /* Mode argument to forkshell.  Don't change FORK_FG or FORK_BG. */
37 #define FORK_FG 0
38 #define FORK_BG 1
39 #define FORK_NOJOB 2
40 
41 #include <signal.h>		/* for sig_atomic_t */
42 
43 struct job;
44 
45 enum {
46 	SHOWJOBS_DEFAULT,	/* job number, status, command */
47 	SHOWJOBS_VERBOSE,	/* job number, PID, status, command */
48 	SHOWJOBS_PIDS,		/* PID only */
49 	SHOWJOBS_PGIDS		/* PID of the group leader only */
50 };
51 
52 extern int job_warning;		/* user was warned about stopped jobs */
53 
54 void setjobctl(int);
55 void showjobs(int, int);
56 struct job *makejob(union node *, int);
57 pid_t forkshell(struct job *, union node *, int);
58 pid_t vforkexecshell(struct job *, char **, char **, const char *, int, int [2]);
59 int waitforjob(struct job *, int *);
60 int stoppedjobs(void);
61 int backgndpidset(void);
62 pid_t backgndpidval(void);
63 char *commandtext(union node *);
64 
65 #if ! JOBS
66 #define setjobctl(on)	/* do nothing */
67 #endif
68