/* $NetBSD: jobs.h,v 1.23.2.1 2021/04/28 09:58:42 martin Exp $ */ /*- * Copyright (c) 1991, 1993 * 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. 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 8.2 (Berkeley) 5/4/95 */ #include "output.h" /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ #define FORK_FG 0 #define FORK_BG 1 #define FORK_NOJOB 2 /* mode flags for showjob(s) */ #define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ #define SHOW_MULTILINE 0x02 /* one line per process */ #define SHOW_PID 0x04 /* include process pid */ #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ #define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */ #define SHOW_ISSIG 0x20 /* job was signalled */ #define SHOW_NO_FREE 0x40 /* do not free job */ /* * 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. */ #define MAXCMDTEXT 200 struct procstat { pid_t pid; /* process id */ int status; /* last process status from wait() */ char cmd[MAXCMDTEXT];/* text of command being run */ }; struct job { struct procstat ps0; /* status of process */ struct procstat *ps; /* status or processes when more than one */ void *ref; /* temporary reference, used variously */ int nprocs; /* number of processes */ pid_t pgrp; /* process group of this job */ char state; #define JOBRUNNING 0 /* at least one proc running */ #define JOBSTOPPED 1 /* all procs are stopped */ #define JOBDONE 2 /* all procs are completed */ char used; /* true if this entry is in used */ char flags; #define JOBCHANGED 1 /* set if status has changed */ #define JOBWANTED 2 /* set if this is a job being sought */ #define JPIPEFAIL 4 /* set if -o pipefail when job created */ #if JOBS char jobctl; /* job running under job control */ int prev_job; /* previous job index */ #endif }; extern pid_t backgndpid; /* pid of last background process */ extern int job_warning; /* user was warned about stopped jobs */ void setjobctl(int); void showjobs(struct output *, int); struct job *makejob(union node *, int); int forkshell(struct job *, union node *, int); void forkchild(struct job *, union node *, int, int); int forkparent(struct job *, union node *, int, pid_t); int waitforjob(struct job *); int stoppedjobs(void); void commandtext(struct procstat *, union node *); int getjobpgrp(const char *); int anyjobs(void); #if ! JOBS #define setjobctl(on) /* do nothing */ #endif