| /*- |
| * Copyright (c) 1991 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Kenneth Almquist. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * from: @(#)jobs.h 5.1 (Berkeley) 3/7/91 |
| * jobs.h,v 1.4 1993/08/01 18:58:26 mycroft Exp |
| */ |
| |
| /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ |
| #define FORK_FG 0 |
| #define FORK_BG 1 |
| #define FORK_NOJOB 2 |
| |
| |
| /* |
| * A job structure contains information about a job. A job is either a |
| * single process or a set of processes contained in a pipeline. In the |
| * latter case, pidlist will be non-NULL, and will point to a -1 terminated |
| * array of pids. |
| */ |
| |
| struct procstat { |
| short pid; /* process id */ |
| short status; /* status flags (defined above) */ |
| char *cmd; /* text of command being run */ |
| }; |
| |
| |
| /* states */ |
| #define JOBSTOPPED 1 /* all procs are stopped */ |
| #define JOBDONE 2 /* all procs are completed */ |
| |
| |
| struct job { |
| struct procstat ps0; /* status of process */ |
| struct procstat *ps; /* status or processes when more than one */ |
| short nprocs; /* number of processes */ |
| short pgrp; /* process group of this job */ |
| char state; /* true if job is finished */ |
| char used; /* true if this entry is in used */ |
| char changed; /* true if status has changed */ |
| #if JOBS |
| char jobctl; /* job running under job control */ |
| #endif |
| }; |
| |
| extern short backgndpid; /* pid of last background process */ |
| |
| |
| #ifdef __STDC__ |
| void setjobctl(int); |
| void showjobs(int); |
| struct job *makejob(union node *, int); |
| int forkshell(struct job *, union node *, int); |
| int waitforjob(struct job *); |
| #else |
| void setjobctl(); |
| void showjobs(); |
| struct job *makejob(); |
| int forkshell(); |
| int waitforjob(); |
| #endif |
| |
| #if ! JOBS |
| #define setjobctl(on) /* do nothing */ |
| #endif |