| /*- |
| * Copyright (c) 1991, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * Copyright (c) 1997-2005 |
| * Herbert Xu <herbert@gondor.apana.org.au>. 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 <inttypes.h> |
| #include <sys/types.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_PID 0x04 /* include process pid */ |
| #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ |
| |
| |
| /* |
| * 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; /* last process status from wait() */ |
| char *cmd; /* text of command being run */ |
| }; |
| |
| struct job { |
| struct procstat ps0; /* status of process */ |
| struct procstat *ps; /* status or processes when more than one */ |
| #if JOBS |
| int stopstatus; /* status of a stopped job */ |
| #endif |
| uint32_t |
| nprocs: 16, /* number of processes */ |
| state: 8, |
| #define JOBRUNNING 0 /* at least one proc running */ |
| #define JOBSTOPPED 1 /* all procs are stopped */ |
| #define JOBDONE 2 /* all procs are completed */ |
| #if JOBS |
| sigint: 1, /* job was killed by SIGINT */ |
| jobctl: 1, /* job running under job control */ |
| #endif |
| waited: 1, /* true if this entry has been waited for */ |
| used: 1, /* true if this entry is in used */ |
| changed: 1; /* true if status has changed */ |
| struct job *prev_job; /* previous job */ |
| }; |
| |
| union node; |
| |
| extern pid_t backgndpid; /* pid of last background process */ |
| extern int job_warning; /* user was warned about stopped jobs */ |
| #if JOBS |
| extern int jobctl; /* true if doing job control */ |
| #else |
| #define jobctl 0 |
| #endif |
| extern int vforked; /* Set if we are in the vforked child */ |
| |
| void setjobctl(int); |
| int killcmd(int, char **); |
| int fgcmd(int, char **); |
| int bgcmd(int, char **); |
| int jobscmd(int, char **); |
| struct output; |
| void showjobs(struct output *, int); |
| int waitcmd(int, char **); |
| struct job *makejob(int); |
| int forkshell(struct job *, union node *, int); |
| struct job *vforkexec(union node *n, char **argv, const char *path, int idx); |
| int waitforjob(struct job *); |
| int stoppedjobs(void); |
| |
| #if ! JOBS |
| #define setjobctl(on) ((void)(on)) /* do nothing */ |
| #endif |