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2714 | cejka | 1 | /* $NetBSD: jobs.h,v 1.12 2000/05/22 10:18:47 elric Exp $ */ |
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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 |