1 /* $NetBSD: jobs.h,v 1.17 2003/01/22 20:36:04 dsl 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)jobs.h 8.2 (Berkeley) 5/4/95 39 */ 40 41 #include "output.h" 42 43 /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 44 #define FORK_FG 0 45 #define FORK_BG 1 46 #define FORK_NOJOB 2 47 48 /* mode flags for showjob(s) */ 49 #define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ 50 #define SHOW_MULTILINE 0x02 /* one line per process */ 51 #define SHOW_PID 0x04 /* include process pid */ 52 #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ 53 #define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */ 54 #define SHOW_ISSIG 0x20 /* job was signalled */ 55 #define SHOW_NO_FREE 0x40 /* do not free job */ 56 57 58 /* 59 * A job structure contains information about a job. A job is either a 60 * single process or a set of processes contained in a pipeline. In the 61 * latter case, pidlist will be non-NULL, and will point to a -1 terminated 62 * array of pids. 63 */ 64 #ifdef SMALL 65 #define MAXCMDTEXT 20 66 #else 67 #define MAXCMDTEXT 200 68 #endif 69 70 struct procstat { 71 pid_t pid; /* process id */ 72 int status; /* last process status from wait() */ 73 char cmd[MAXCMDTEXT];/* text of command being run */ 74 }; 75 76 struct job { 77 struct procstat ps0; /* status of process */ 78 struct procstat *ps; /* status or processes when more than one */ 79 int nprocs; /* number of processes */ 80 pid_t pgrp; /* process group of this job */ 81 char state; 82 #define JOBRUNNING 0 /* at least one proc running */ 83 #define JOBSTOPPED 1 /* all procs are stopped */ 84 #define JOBDONE 2 /* all procs are completed */ 85 char used; /* true if this entry is in used */ 86 char changed; /* true if status has changed */ 87 #if JOBS 88 char jobctl; /* job running under job control */ 89 int prev_job; /* previous job index */ 90 #endif 91 }; 92 93 extern pid_t backgndpid; /* pid of last background process */ 94 extern int job_warning; /* user was warned about stopped jobs */ 95 96 void setjobctl(int); 97 int fgcmd(int, char **); 98 int bgcmd(int, char **); 99 int jobscmd(int, char **); 100 void showjobs(struct output *, int); 101 int waitcmd(int, char **); 102 int jobidcmd(int, char **); 103 struct job *makejob(union node *, int); 104 int forkshell(struct job *, union node *, int); 105 void forkchild(struct job *, union node *, int, int); 106 int forkparent(struct job *, union node *, int, pid_t); 107 int waitforjob(struct job *); 108 int stoppedjobs(void); 109 void commandtext(struct procstat *, union node *); 110 int getjobpgrp(const char *); 111 112 #if ! JOBS 113 #define setjobctl(on) /* do nothing */ 114 #endif 115