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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 "includes.h" | |
24 | ||
25 | #ifndef HAVE_WAITPID | |
26 | #include <errno.h> | |
27 | #include <sys/wait.h> | |
28 | #include "bsd-waitpid.h" | |
29 | ||
30 | pid_t | |
31 | waitpid(int pid, int *stat_loc, int options) | |
32 | { | |
33 | union wait statusp; | |
34 | pid_t wait_pid; | |
35 | ||
36 | if (pid <= 0) { | |
37 | if (pid != -1) { | |
38 | errno = EINVAL; | |
39 | return -1; | |
40 | } | |
41 | pid = 0; /* wait4() wants pid=0 for indiscriminate wait. */ | |
42 | } | |
43 | wait_pid = wait4(pid, &statusp, options, NULL); | |
44 | stat_loc = (int *)statusp.w_status; | |
45 | return wait_pid; | |
46 | } | |
47 | ||
48 | #endif /* !HAVE_WAITPID */ |