blob: 7a5a2341c7a9c8d90180d7e6df428f9c4fdcd44f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Knowledge Ventures *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include <ast.h>
#if _lib_setpgid
NoN(setpgid)
#else
#include <error.h>
#ifndef ENOSYS
#define ENOSYS EINVAL
#endif
#if _lib_setpgrp2
#define setpgrp setpgrp2
#else
#if _lib_BSDsetpgrp
#define _lib_setpgrp2 1
#define setpgrp BSDsetpgrp
#else
#if _lib_wait3
#define _lib_setpgrp2 1
#endif
#endif
#endif
#if _lib_setpgrp2
extern int setpgrp(int, int);
#else
extern int setpgrp(void);
#endif
/*
* set process group id
*/
int
setpgid(pid_t pid, pid_t pgid)
{
#if _lib_setpgrp2
return(setpgrp(pid, pgid));
#else
#if _lib_setpgrp
int caller = getpid();
if ((pid == 0 || pid == caller) && (pgid == 0 || pgid == caller))
return(setpgrp());
errno = EINVAL;
#else
errno = ENOSYS;
#endif
return(-1);
#endif
}
#endif
|
