Annotation of /trunk/mkinitrd-magellan/klibc/usr/dash/jobs.h
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Wed Aug 18 21:11:40 2010 UTC (13 years, 8 months ago) by niro
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Wed Aug 18 21:11:40 2010 UTC (13 years, 8 months ago) by niro
File MIME type: text/plain
File size: 3938 byte(s)
-updated to klibc-1.5.19
1 | niro | 532 | /*- |
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 | niro | 1122 | #define setjobctl(on) ((void)(on)) /* do nothing */ |
109 | niro | 532 | #endif |