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| 2714 | cejka | 1 | /* $NetBSD: jobs.h,v 1.12 2000/05/22 10:18:47 elric Exp $ */ |
| 2 | |||
| 3 | /*- |
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| 4 | * Copyright (c) 1991, 1993 |
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| 5 | * The Regents of the University of California. All rights reserved. |
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| 6 | * |
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| 7 | * This code is derived from software contributed to Berkeley by |
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| 8 | * Kenneth Almquist. |
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| 9 | * |
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| 10 | * Redistribution and use in source and binary forms, with or without |
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| 11 | * modification, are permitted provided that the following conditions |
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| 12 | * are met: |
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| 13 | * 1. Redistributions of source code must retain the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer. |
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 16 | * notice, this list of conditions and the following disclaimer in the |
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| 17 | * documentation and/or other materials provided with the distribution. |
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| 18 | * 3. All advertising materials mentioning features or use of this software |
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| 19 | * must display the following acknowledgement: |
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| 20 | * This product includes software developed by the University of |
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| 21 | * California, Berkeley and its contributors. |
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| 22 | * 4. Neither the name of the University nor the names of its contributors |
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| 23 | * may be used to endorse or promote products derived from this software |
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| 24 | * without specific prior written permission. |
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| 25 | * |
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| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 36 | * SUCH DAMAGE. |
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| 37 | * |
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| 38 | * @(#)jobs.h 8.2 (Berkeley) 5/4/95 |
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| 39 | */ |
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| 40 | |||
| 41 | /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ |
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| 42 | #define FORK_FG 0 |
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| 43 | #define FORK_BG 1 |
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| 44 | #define FORK_NOJOB 2 |
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| 45 | |||
| 46 | |||
| 47 | /* |
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| 48 | * A job structure contains information about a job. A job is either a |
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| 49 | * single process or a set of processes contained in a pipeline. In the |
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| 50 | * latter case, pidlist will be non-NULL, and will point to a -1 terminated |
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| 51 | * array of pids. |
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| 52 | */ |
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| 53 | |||
| 54 | struct procstat { |
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| 55 | pid_t pid; /* process id */ |
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| 56 | int status; /* status flags (defined above) */ |
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| 57 | char *cmd; /* text of command being run */ |
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| 58 | }; |
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| 59 | |||
| 60 | |||
| 61 | /* states */ |
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| 62 | #define JOBSTOPPED 1 /* all procs are stopped */ |
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| 63 | #define JOBDONE 2 /* all procs are completed */ |
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| 64 | |||
| 65 | |||
| 66 | struct job { |
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| 67 | struct procstat ps0; /* status of process */ |
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| 68 | struct procstat *ps; /* status or processes when more than one */ |
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| 69 | short nprocs; /* number of processes */ |
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| 70 | short pgrp; /* process group of this job */ |
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| 71 | char state; /* true if job is finished */ |
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| 72 | char used; /* true if this entry is in used */ |
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| 73 | char changed; /* true if status has changed */ |
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| 74 | #if JOBS |
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| 75 | char jobctl; /* job running under job control */ |
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| 76 | #endif |
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| 77 | }; |
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| 78 | |||
| 79 | extern short backgndpid; /* pid of last background process */ |
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| 80 | extern int job_warning; /* user was warned about stopped jobs */ |
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| 81 | |||
| 82 | void setjobctl (int); |
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| 83 | int killcmd (int, char **); |
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| 84 | int fgcmd (int, char **); |
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| 85 | int bgcmd (int, char **); |
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| 86 | int jobscmd (int, char **); |
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| 87 | void showjobs (int); |
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| 88 | int waitcmd (int, char **); |
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| 89 | int jobidcmd (int, char **); |
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| 90 | struct job *makejob (union node *, int); |
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| 91 | int forkshell (struct job *, union node *, int); |
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| 92 | int waitforjob (struct job *); |
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| 93 | int stoppedjobs (void); |
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| 94 | char *commandtext (union node *); |
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| 95 | |||
| 96 | #if ! JOBS |
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| 97 | #define setjobctl(on) /* do nothing */ |
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| 98 | #endif |