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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)jobs.h 8.2 (Berkeley) 5/4/95 37 * $Id: jobs.h,v 1.5 1997/02/22 13:58:29 peter Exp $ 38 */ 39 40 /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 41 #define FORK_FG 0 42 #define FORK_BG 1 43 #define FORK_NOJOB 2 44 45 46 /* 47 * A job structure contains information about a job. A job is either a 48 * single process or a set of processes contained in a pipeline. In the 49 * latter case, pidlist will be non-NULL, and will point to a -1 terminated 50 * array of pids. 51 */ 52 53 struct procstat { 54 pid_t pid; /* process id */ 55 int status; /* status flags (defined above) */ 56 char *cmd; /* text of command being run */ 57 }; 58 59 60 /* states */ 61 #define JOBSTOPPED 1 /* all procs are stopped */ 62 #define JOBDONE 2 /* all procs are completed */ 63 64 65 struct job { 66 struct procstat ps0; /* status of process */ 67 struct procstat *ps; /* status or processes when more than one */ 68 short nprocs; /* number of processes */ 69 short pgrp; /* process group of this job */ 70 char state; /* true if job is finished */ 71 char used; /* true if this entry is in used */ 72 char changed; /* true if status has changed */ 73 #if JOBS 74 char jobctl; /* job running under job control */ 75 #endif 76 }; 77 78 extern pid_t backgndpid; /* pid of last background process */ 79 extern int job_warning; /* user was warned about stopped jobs */ 80 81 void setjobctl __P((int)); 82 int fgcmd __P((int, char **)); 83 int bgcmd __P((int, char **)); 84 int jobscmd __P((int, char **)); 85 void showjobs __P((int)); 86 int waitcmd __P((int, char **)); 87 int jobidcmd __P((int, char **)); 88 struct job *makejob __P((union node *, int)); 89 int forkshell __P((struct job *, union node *, int)); 90 int waitforjob __P((struct job *)); 91 int stoppedjobs __P((void)); 92 char *commandtext __P((union node *)); 93 94 #if ! JOBS 95 #define setjobctl(on) /* do nothing */ 96 #endif 97