jobs.h revision 17987
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Kenneth Almquist. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 3. All advertising materials mentioning features or use of this software 171556Srgrimes * must display the following acknowledgement: 181556Srgrimes * This product includes software developed by the University of 191556Srgrimes * California, Berkeley and its contributors. 201556Srgrimes * 4. Neither the name of the University nor the names of its contributors 211556Srgrimes * may be used to endorse or promote products derived from this software 221556Srgrimes * without specific prior written permission. 231556Srgrimes * 241556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341556Srgrimes * SUCH DAMAGE. 351556Srgrimes * 3617987Speter * @(#)jobs.h 8.2 (Berkeley) 5/4/95 3717987Speter * $Id: jobs.h,v 1.2 1994/09/24 02:57:42 davidg Exp $ 381556Srgrimes */ 391556Srgrimes 401556Srgrimes/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 411556Srgrimes#define FORK_FG 0 421556Srgrimes#define FORK_BG 1 431556Srgrimes#define FORK_NOJOB 2 441556Srgrimes 451556Srgrimes 461556Srgrimes/* 471556Srgrimes * A job structure contains information about a job. A job is either a 481556Srgrimes * single process or a set of processes contained in a pipeline. In the 491556Srgrimes * latter case, pidlist will be non-NULL, and will point to a -1 terminated 501556Srgrimes * array of pids. 511556Srgrimes */ 521556Srgrimes 531556Srgrimesstruct procstat { 541556Srgrimes short pid; /* process id */ 551556Srgrimes short status; /* status flags (defined above) */ 561556Srgrimes char *cmd; /* text of command being run */ 571556Srgrimes}; 581556Srgrimes 591556Srgrimes 601556Srgrimes/* states */ 611556Srgrimes#define JOBSTOPPED 1 /* all procs are stopped */ 621556Srgrimes#define JOBDONE 2 /* all procs are completed */ 631556Srgrimes 641556Srgrimes 651556Srgrimesstruct job { 661556Srgrimes struct procstat ps0; /* status of process */ 671556Srgrimes struct procstat *ps; /* status or processes when more than one */ 681556Srgrimes short nprocs; /* number of processes */ 691556Srgrimes short pgrp; /* process group of this job */ 701556Srgrimes char state; /* true if job is finished */ 711556Srgrimes char used; /* true if this entry is in used */ 721556Srgrimes char changed; /* true if status has changed */ 731556Srgrimes#if JOBS 741556Srgrimes char jobctl; /* job running under job control */ 751556Srgrimes#endif 761556Srgrimes}; 771556Srgrimes 781556Srgrimesextern short backgndpid; /* pid of last background process */ 791556Srgrimesextern int job_warning; /* user was warned about stopped jobs */ 801556Srgrimes 8117987Spetervoid setjobctl __P((int)); 8217987Speterint fgcmd __P((int, char **)); 8317987Speterint bgcmd __P((int, char **)); 8417987Speterint jobscmd __P((int, char **)); 8517987Spetervoid showjobs __P((int)); 8617987Speterint waitcmd __P((int, char **)); 8717987Speterint jobidcmd __P((int, char **)); 8817987Speterstruct job *makejob __P((union node *, int)); 8917987Speterint forkshell __P((struct job *, union node *, int)); 9017987Speterint waitforjob __P((struct job *)); 9117987Speterint stoppedjobs __P((void)); 9217987Speterchar *commandtext __P((union node *)); 931556Srgrimes 941556Srgrimes#if ! JOBS 951556Srgrimes#define setjobctl(on) /* do nothing */ 961556Srgrimes#endif 97