1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Kenneth Almquist. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)jobs.h 8.2 (Berkeley) 5/4/95 33 * $FreeBSD$ 34 */ 35 36 /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ 37 #define FORK_FG 0 38 #define FORK_BG 1 39 #define FORK_NOJOB 2 40 41 #include <signal.h> /* for sig_atomic_t */ 42 43 /* 44 * A job structure contains information about a job. A job is either a 45 * single process or a set of processes contained in a pipeline. In the 46 * latter case, pidlist will be non-NULL, and will point to a -1 terminated 47 * array of pids. 48 */ 49 50 struct procstat { 51 pid_t pid; /* process id */ 52 int status; /* status flags (defined above) */ 53 char *cmd; /* text of command being run */ 54 }; 55 56 57 /* states */ 58 #define JOBSTOPPED 1 /* all procs are stopped */ 59 #define JOBDONE 2 /* all procs are completed */ 60 61 62 struct job { 63 struct procstat ps0; /* status of process */ 64 struct procstat *ps; /* status or processes when more than one */ 65 short nprocs; /* number of processes */ 66 pid_t pgrp; /* process group of this job */ 67 char state; /* true if job is finished */ 68 char used; /* true if this entry is in used */ 69 char changed; /* true if status has changed */ 70 char foreground; /* true if running in the foreground */ 71 #if JOBS 72 char jobctl; /* job running under job control */ 73 struct job *next; /* job used after this one */ 74 #endif 75 }; 76 77 enum { 78 SHOWJOBS_DEFAULT, /* job number, status, command */ 79 SHOWJOBS_VERBOSE, /* job number, PID, status, command */ 80 SHOWJOBS_PIDS, /* PID only */ 81 SHOWJOBS_PGIDS /* PID of the group leader only */ 82 }; 83 84 extern pid_t backgndpid; /* pid of last background process */ 85 extern int job_warning; /* user was warned about stopped jobs */ 86 extern int in_waitcmd; /* are we in waitcmd()? */ 87 extern int in_dowait; /* are we in dowait()? */ 88 extern volatile sig_atomic_t breakwaitcmd; /* break wait to process traps? */ 89 90 void setjobctl(int); 91 int fgcmd(int, char **); 92 int bgcmd(int, char **); 93 int jobscmd(int, char **); 94 void showjobs(int, int); 95 int waitcmd(int, char **); 96 int jobidcmd(int, char **); 97 struct job *makejob(union node *, int); 98 pid_t forkshell(struct job *, union node *, int); 99 int waitforjob(struct job *, int *); 100 int stoppedjobs(void); 101 char *commandtext(union node *); 102 103 #if ! JOBS 104 #define setjobctl(on) /* do nothing */ 105 #endif 106