Contents of /trunk/mkinitrd-magellan/klibc/usr/dash/jobs.h
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
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-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /*- |
2 | * Copyright (c) 1991, 1993 |
3 | * The Regents of the University of California. All rights reserved. |
4 | * Copyright (c) 1997-2005 |
5 | * Herbert Xu <herbert@gondor.apana.org.au>. 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 <stdint.h> |
38 | #include <sys/types.h> |
39 | |
40 | /* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ |
41 | #define FORK_FG 0 |
42 | #define FORK_BG 1 |
43 | #define FORK_NOJOB 2 |
44 | |
45 | /* mode flags for showjob(s) */ |
46 | #define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ |
47 | #define SHOW_PID 0x04 /* include process pid */ |
48 | #define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ |
49 | |
50 | |
51 | /* |
52 | * A job structure contains information about a job. A job is either a |
53 | * single process or a set of processes contained in a pipeline. In the |
54 | * latter case, pidlist will be non-NULL, and will point to a -1 terminated |
55 | * array of pids. |
56 | */ |
57 | |
58 | struct procstat { |
59 | pid_t pid; /* process id */ |
60 | int status; /* last process status from wait() */ |
61 | char *cmd; /* text of command being run */ |
62 | }; |
63 | |
64 | struct job { |
65 | struct procstat ps0; /* status of process */ |
66 | struct procstat *ps; /* status or processes when more than one */ |
67 | #if JOBS |
68 | int stopstatus; /* status of a stopped job */ |
69 | #endif |
70 | uint32_t |
71 | nprocs: 16, /* number of processes */ |
72 | state: 8, |
73 | #define JOBRUNNING 0 /* at least one proc running */ |
74 | #define JOBSTOPPED 1 /* all procs are stopped */ |
75 | #define JOBDONE 2 /* all procs are completed */ |
76 | #if JOBS |
77 | sigint: 1, /* job was killed by SIGINT */ |
78 | jobctl: 1, /* job running under job control */ |
79 | #endif |
80 | waited: 1, /* true if this entry has been waited for */ |
81 | used: 1, /* true if this entry is in used */ |
82 | changed: 1; /* true if status has changed */ |
83 | struct job *prev_job; /* previous job */ |
84 | }; |
85 | |
86 | extern pid_t backgndpid; /* pid of last background process */ |
87 | extern int job_warning; /* user was warned about stopped jobs */ |
88 | #if JOBS |
89 | extern int jobctl; /* true if doing job control */ |
90 | #else |
91 | #define jobctl 0 |
92 | #endif |
93 | |
94 | void setjobctl(int); |
95 | int killcmd(int, char **); |
96 | int fgcmd(int, char **); |
97 | int bgcmd(int, char **); |
98 | int jobscmd(int, char **); |
99 | struct output; |
100 | void showjobs(struct output *, int); |
101 | int waitcmd(int, char **); |
102 | struct job *makejob(union node *, int); |
103 | int forkshell(struct job *, union node *, int); |
104 | int waitforjob(struct job *); |
105 | int stoppedjobs(void); |
106 | |
107 | #if ! JOBS |
108 | #define setjobctl(on) /* do nothing */ |
109 | #endif |