1 /* $NetBSD: jobs.h,v 1.26 2023/04/07 10:34:13 kre Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Kenneth Almquist. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)jobs.h 8.2 (Berkeley) 5/4/95 35 */ 36 37 #include "output.h" 38 39 /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 40 #define FORK_FG 0 41 #define FORK_BG 1 42 #define FORK_NOJOB 2 43 44 /* mode flags for showjob(s) */ 45 #define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ 46 #define SHOW_MULTILINE 0x02 /* one line per process */ 47 #define SHOW_PID 0x04 /* include process pid */ 48 #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ 49 #define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */ 50 #define SHOW_ISSIG 0x20 /* job was signalled */ 51 #define SHOW_NO_FREE 0x40 /* do not free job */ 52 #define SHOW_PROCTITLE 0x80 /* set the process title */ 53 54 55 /* 56 * A job structure contains information about a job. A job is either a 57 * single process or a set of processes contained in a pipeline. In the 58 * latter case, pidlist will be non-NULL, and will point to a -1 terminated 59 * array of pids. 60 */ 61 #define MAXCMDTEXT 200 62 63 struct procstat { 64 pid_t pid; /* process id */ 65 int status; /* last process status from wait() */ 66 char cmd[MAXCMDTEXT];/* text of command being run */ 67 }; 68 69 struct job { 70 struct procstat ps0; /* status of process */ 71 struct procstat *ps; /* status or processes when more than one */ 72 void *ref; /* temporary reference, used variously */ 73 int nprocs; /* number of processes */ 74 pid_t pgrp; /* process group of this job */ 75 char state; 76 #define JOBRUNNING 0 /* at least one proc running */ 77 #define JOBSTOPPED 1 /* all procs are stopped */ 78 #define JOBDONE 2 /* all procs are completed */ 79 char used; /* true if this entry is in used */ 80 char flags; 81 #define JOBCHANGED 1 /* set if status has changed */ 82 #define JOBWANTED 2 /* set if this is a job being sought */ 83 #define JPIPEFAIL 4 /* set if -o pipefail when job created */ 84 #if JOBS 85 char jobctl; /* job running under job control */ 86 int prev_job; /* previous job index */ 87 #endif 88 }; 89 90 extern pid_t backgndpid; /* pid of last background process */ 91 extern int job_warning; /* user was warned about stopped jobs */ 92 93 void setjobctl(int); 94 void showjobs(struct output *, int); 95 struct job *makejob(union node *, int); 96 int forkshell(struct job *, union node *, int); 97 void forkchild(struct job *, union node *, int, int); 98 int forkparent(struct job *, union node *, int, pid_t); 99 int waitforjob(struct job *); 100 int stoppedjobs(void); 101 void commandtext(struct procstat *, union node *); 102 int getjobpgrp(const char *); 103 int anyjobs(void); 104 105 #if ! JOBS 106 #define setjobctl(on) /* do nothing */ 107 #endif 108