| 1 | /* $NetBSD: jobs.h,v 1.19 2003/11/27 21:16:14 dsl Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*-
|
|---|
| 4 | * Copyright (c) 1991, 1993
|
|---|
| 5 | * The Regents of the University of California. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * This code is derived from software contributed to Berkeley by
|
|---|
| 8 | * Kenneth Almquist.
|
|---|
| 9 | *
|
|---|
| 10 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 11 | * modification, are permitted provided that the following conditions
|
|---|
| 12 | * are met:
|
|---|
| 13 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 14 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 15 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 16 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 17 | * documentation and/or other materials provided with the distribution.
|
|---|
| 18 | * 3. Neither the name of the University nor the names of its contributors
|
|---|
| 19 | * may be used to endorse or promote products derived from this software
|
|---|
| 20 | * without specific prior written permission.
|
|---|
| 21 | *
|
|---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 32 | * SUCH DAMAGE.
|
|---|
| 33 | *
|
|---|
| 34 | * @(#)jobs.h 8.2 (Berkeley) 5/4/95
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | #include "output.h"
|
|---|
| 38 |
|
|---|
| 39 | /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
|
|---|
| 40 | #define FORK_FG 0
|
|---|
| 41 | #define FORK_BG 1
|
|---|
| 42 | #define FORK_NOJOB 2
|
|---|
| 43 |
|
|---|
| 44 | /* mode flags for showjob(s) */
|
|---|
| 45 | #define SHOW_PGID 0x01 /* only show pgid - for jobs -p */
|
|---|
| 46 | #define SHOW_MULTILINE 0x02 /* one line per process */
|
|---|
| 47 | #define SHOW_PID 0x04 /* include process pid */
|
|---|
| 48 | #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */
|
|---|
| 49 | #define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */
|
|---|
| 50 | #define SHOW_ISSIG 0x20 /* job was signalled */
|
|---|
| 51 | #define SHOW_NO_FREE 0x40 /* do not free job */
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 | /*
|
|---|
| 55 | * A job structure contains information about a job. A job is either a
|
|---|
| 56 | * single process or a set of processes contained in a pipeline. In the
|
|---|
| 57 | * latter case, pidlist will be non-NULL, and will point to a -1 terminated
|
|---|
| 58 | * array of pids.
|
|---|
| 59 | */
|
|---|
| 60 | #define MAXCMDTEXT 200
|
|---|
| 61 |
|
|---|
| 62 | struct procstat {
|
|---|
| 63 | pid_t pid; /* process id */
|
|---|
| 64 | int status; /* last process status from wait() */
|
|---|
| 65 | char cmd[MAXCMDTEXT];/* text of command being run */
|
|---|
| 66 | };
|
|---|
| 67 |
|
|---|
| 68 | struct job {
|
|---|
| 69 | struct procstat ps0; /* status of process */
|
|---|
| 70 | struct procstat *ps; /* status or processes when more than one */
|
|---|
| 71 | int nprocs; /* number of processes */
|
|---|
| 72 | pid_t pgrp; /* process group of this job */
|
|---|
| 73 | char state;
|
|---|
| 74 | #define JOBRUNNING 0 /* at least one proc running */
|
|---|
| 75 | #define JOBSTOPPED 1 /* all procs are stopped */
|
|---|
| 76 | #define JOBDONE 2 /* all procs are completed */
|
|---|
| 77 | char used; /* true if this entry is in used */
|
|---|
| 78 | char changed; /* true if status has changed */
|
|---|
| 79 | #if JOBS
|
|---|
| 80 | char jobctl; /* job running under job control */
|
|---|
| 81 | int prev_job; /* previous job index */
|
|---|
| 82 | #endif
|
|---|
| 83 | };
|
|---|
| 84 |
|
|---|
| 85 | /*extern pid_t backgndpid;*/ /* pid of last background process */
|
|---|
| 86 | /*extern int job_warning;*/ /* user was warned about stopped jobs */
|
|---|
| 87 |
|
|---|
| 88 | void setjobctl(struct shinstance *, int);
|
|---|
| 89 | int fgcmd(struct shinstance *, int, char **);
|
|---|
| 90 | int bgcmd(struct shinstance *, int, char **);
|
|---|
| 91 | int jobscmd(struct shinstance *, int, char **);
|
|---|
| 92 | void showjobs(struct shinstance *, struct output *, int);
|
|---|
| 93 | int waitcmd(struct shinstance *, int, char **);
|
|---|
| 94 | int jobidcmd(struct shinstance *, int, char **);
|
|---|
| 95 | union node;
|
|---|
| 96 | struct job *makejob(struct shinstance *, union node *, int);
|
|---|
| 97 | int forkshell(struct shinstance *, struct job *, union node *, int);
|
|---|
| 98 | void forkchild(struct shinstance *, struct job *, union node *, int, int);
|
|---|
| 99 | int forkparent(struct shinstance *, struct job *, union node *, int, pid_t);
|
|---|
| 100 | int waitforjob(struct shinstance *, struct job *);
|
|---|
| 101 | int stoppedjobs(struct shinstance *);
|
|---|
| 102 | void commandtext(struct shinstance *, struct procstat *, union node *);
|
|---|
| 103 | int getjobpgrp(struct shinstance *, const char *);
|
|---|
| 104 |
|
|---|
| 105 | #if ! JOBS
|
|---|
| 106 | #define setjobctl(psh, on) /* do nothing */
|
|---|
| 107 | #endif
|
|---|
