jobs.h revision 209600
1251881Speter/*- 2251881Speter * Copyright (c) 1991, 1993 3251881Speter * The Regents of the University of California. All rights reserved. 4251881Speter * 5251881Speter * This code is derived from software contributed to Berkeley by 6251881Speter * Kenneth Almquist. 7251881Speter * 8251881Speter * Redistribution and use in source and binary forms, with or without 9251881Speter * modification, are permitted provided that the following conditions 10251881Speter * are met: 11251881Speter * 1. Redistributions of source code must retain the above copyright 12251881Speter * notice, this list of conditions and the following disclaimer. 13251881Speter * 2. Redistributions in binary form must reproduce the above copyright 14251881Speter * notice, this list of conditions and the following disclaimer in the 15251881Speter * documentation and/or other materials provided with the distribution. 16251881Speter * 4. Neither the name of the University nor the names of its contributors 17251881Speter * may be used to endorse or promote products derived from this software 18251881Speter * without specific prior written permission. 19251881Speter * 20251881Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21251881Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22251881Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23251881Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24251881Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25251881Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26251881Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27251881Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28251881Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29251881Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30251881Speter * SUCH DAMAGE. 31251881Speter * 32251881Speter * @(#)jobs.h 8.2 (Berkeley) 5/4/95 33251881Speter * $FreeBSD: head/bin/sh/jobs.h 209600 2010-06-29 22:37:45Z jilles $ 34251881Speter */ 35251881Speter 36251881Speter/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 37251881Speter#define FORK_FG 0 38251881Speter#define FORK_BG 1 39251881Speter#define FORK_NOJOB 2 40251881Speter 41251881Speter#include <signal.h> /* for sig_atomic_t */ 42251881Speter 43251881Speter/* 44251881Speter * A job structure contains information about a job. A job is either a 45251881Speter * single process or a set of processes contained in a pipeline. In the 46251881Speter * latter case, pidlist will be non-NULL, and will point to a -1 terminated 47251881Speter * array of pids. 48251881Speter */ 49251881Speter 50251881Speterstruct procstat { 51251881Speter pid_t pid; /* process id */ 52251881Speter int status; /* status flags (defined above) */ 53251881Speter char *cmd; /* text of command being run */ 54251881Speter}; 55251881Speter 56251881Speter 57251881Speter/* states */ 58251881Speter#define JOBSTOPPED 1 /* all procs are stopped */ 59251881Speter#define JOBDONE 2 /* all procs are completed */ 60251881Speter 61251881Speter 62251881Speterstruct job { 63251881Speter struct procstat ps0; /* status of process */ 64251881Speter struct procstat *ps; /* status or processes when more than one */ 65251881Speter short nprocs; /* number of processes */ 66251881Speter pid_t pgrp; /* process group of this job */ 67251881Speter char state; /* true if job is finished */ 68251881Speter char used; /* true if this entry is in used */ 69251881Speter char changed; /* true if status has changed */ 70251881Speter char foreground; /* true if running in the foreground */ 71251881Speter char remembered; /* true if $! referenced */ 72251881Speter#if JOBS 73251881Speter char jobctl; /* job running under job control */ 74251881Speter struct job *next; /* job used after this one */ 75251881Speter#endif 76251881Speter}; 77251881Speter 78251881Speterenum { 79251881Speter SHOWJOBS_DEFAULT, /* job number, status, command */ 80251881Speter SHOWJOBS_VERBOSE, /* job number, PID, status, command */ 81251881Speter SHOWJOBS_PIDS, /* PID only */ 82251881Speter SHOWJOBS_PGIDS /* PID of the group leader only */ 83251881Speter}; 84251881Speter 85251881Speterextern int job_warning; /* user was warned about stopped jobs */ 86251881Speterextern int in_waitcmd; /* are we in waitcmd()? */ 87251881Speterextern int in_dowait; /* are we in dowait()? */ 88251881Speterextern volatile sig_atomic_t breakwaitcmd; /* break wait to process traps? */ 89251881Speter 90251881Spetervoid setjobctl(int); 91251881Speterint fgcmd(int, char **); 92251881Speterint bgcmd(int, char **); 93251881Speterint jobscmd(int, char **); 94251881Spetervoid showjobs(int, int); 95251881Speterint waitcmd(int, char **); 96251881Speterint jobidcmd(int, char **); 97251881Speterstruct job *makejob(union node *, int); 98251881Speterpid_t forkshell(struct job *, union node *, int); 99251881Speterint waitforjob(struct job *, int *); 100251881Speterint stoppedjobs(void); 101251881Speterint backgndpidset(void); 102251881Speterpid_t backgndpidval(void); 103251881Speterchar *commandtext(union node *); 104251881Speter 105251881Speter#if ! JOBS 106251881Speter#define setjobctl(on) /* do nothing */ 107251881Speter#endif 108251881Speter