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bsd-waitpid.h
1 /*
2  * Copyright (c) 2000 Ben Lindstrom. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  *
24  */
25 
26 #ifndef _BSD_WAITPID_H
27 #define _BSD_WAITPID_H
28 
29 #ifndef HAVE_WAITPID
30 /* Clean out any potential issues */
31 #undef WIFEXITED
32 #undef WIFSTOPPED
33 #undef WIFSIGNALED
34 
35 /* Define required functions to mimic a POSIX look and feel */
36 #define _W_INT(w) (*(int*)&(w)) /* convert union wait to int */
37 #define WIFEXITED(w) (!((_W_INT(w)) & 0377))
38 #define WIFSTOPPED(w) ((_W_INT(w)) & 0100)
39 #define WIFSIGNALED(w) (!WIFEXITED(w) && !WIFSTOPPED(w))
40 #define WEXITSTATUS(w) (int)(WIFEXITED(w) ? ((_W_INT(w) >> 8) & 0377) : -1)
41 #define WTERMSIG(w) (int)(WIFSIGNALED(w) ? (_W_INT(w) & 0177) : -1)
42 #define WCOREFLAG 0x80
43 #define WCOREDUMP(w) ((_W_INT(w)) & WCOREFLAG)
44 
45 /* Prototype */
46 pid_t waitpid(int, int *, int);
47 
48 #endif /* !HAVE_WAITPID */
49 #endif /* _BSD_WAITPID_H */