1 /*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions
4 * are met:
5 * 1. Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * 2. Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 *
11 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
12 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
13 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
14 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
15 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
16 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
17 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
18 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
19 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
20 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21 */
22
23 #include "config.h"
24
25 /*
26 RCSID("$Id: bsd-waitpid.c,v 1.3 2001/03/26 05:35:34 mouring Exp $");
27 */
28
29 #ifndef HAVE_WAITPID
30 #include <errno.h>
31 #include <sys/wait.h>
32 #include "waitpid.h"
33
34 pid_t
waitpid(int pid,int * stat_loc,int options)35 waitpid(int pid, int *stat_loc, int options)
36 {
37 union wait statusp;
38 pid_t wait_pid;
39
40 if (pid <= 0) {
41 if (pid != -1) {
42 errno = EINVAL;
43 return -1;
44 }
45 pid = 0; /* wait4() wants pid=0 for indiscriminate wait. */
46 }
47 wait_pid = wait4(pid, &statusp, options, NULL);
48 if (stat_loc)
49 *stat_loc = (int) statusp.w_status;
50
51 return wait_pid;
52 }
53
54 #endif /* !HAVE_WAITPID */
55
56
57
58