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Diffstat (limited to 'bin/sh/jobs.h')
-rw-r--r-- | bin/sh/jobs.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/bin/sh/jobs.h b/bin/sh/jobs.h new file mode 100644 index 000000000000..888d6042a3f5 --- /dev/null +++ b/bin/sh/jobs.h @@ -0,0 +1,100 @@ +/*- + * 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 + * $FreeBSD$ + */ + +/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ +#define FORK_FG 0 +#define FORK_BG 1 +#define FORK_NOJOB 2 + +#include <signal.h> /* for sig_atomic_t */ + +/* + * 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. + */ + +struct procstat { + pid_t pid; /* process id */ + int status; /* status flags (defined above) */ + char *cmd; /* text of command being run */ +}; + + +/* states */ +#define JOBSTOPPED 1 /* all procs are stopped */ +#define JOBDONE 2 /* all procs are completed */ + + +struct job { + struct procstat ps0; /* status of process */ + struct procstat *ps; /* status or processes when more than one */ + short nprocs; /* number of processes */ + pid_t pgrp; /* process group of this job */ + char state; /* true if job is finished */ + char used; /* true if this entry is in used */ + char changed; /* true if status has changed */ + char foreground; /* true if running in the foreground */ + char remembered; /* true if $! referenced */ +#if JOBS + char jobctl; /* job running under job control */ + struct job *next; /* job used after this one */ +#endif +}; + +enum { + SHOWJOBS_DEFAULT, /* job number, status, command */ + SHOWJOBS_VERBOSE, /* job number, PID, status, command */ + SHOWJOBS_PIDS, /* PID only */ + SHOWJOBS_PGIDS /* PID of the group leader only */ +}; + +extern int job_warning; /* user was warned about stopped jobs */ + +void setjobctl(int); +void showjobs(int, int); +struct job *makejob(union node *, int); +pid_t forkshell(struct job *, union node *, int); +pid_t vforkexecshell(struct job *, char **, char **, const char *, int, int []); +int waitforjob(struct job *, int *); +int stoppedjobs(void); +int backgndpidset(void); +pid_t backgndpidval(void); +char *commandtext(union node *); + +#if ! JOBS +#define setjobctl(on) /* do nothing */ +#endif |