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- /*-
- * 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.
- *
- * @(#)jobs.h 5.1 (Berkeley) 3/7/91
- */
-
- /* 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
-