1d7847a8dSBrooks Davis /*-
2d7847a8dSBrooks Davis * SPDX-License-Identifier: BSD-2-Clause
3d7847a8dSBrooks Davis *
4d7847a8dSBrooks Davis * Copyright (c) 2012 Jukka A. Ukkonen
5d7847a8dSBrooks Davis * All rights reserved.
6d7847a8dSBrooks Davis *
7d7847a8dSBrooks Davis * This software was developed by Jukka Ukkonen for FreeBSD.
8d7847a8dSBrooks Davis *
9d7847a8dSBrooks Davis * Redistribution and use in source and binary forms, with or without
10d7847a8dSBrooks Davis * modification, are permitted provided that the following conditions
11d7847a8dSBrooks Davis * are met:
12d7847a8dSBrooks Davis * 1. Redistributions of source code must retain the above copyright
13d7847a8dSBrooks Davis * notice, this list of conditions and the following disclaimer.
14d7847a8dSBrooks Davis * 2. Redistributions in binary form must reproduce the above copyright
15d7847a8dSBrooks Davis * notice, this list of conditions and the following disclaimer in the
16d7847a8dSBrooks Davis * documentation and/or other materials provided with the distribution.
17d7847a8dSBrooks Davis *
18d7847a8dSBrooks Davis * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19d7847a8dSBrooks Davis * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20d7847a8dSBrooks Davis * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21d7847a8dSBrooks Davis * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22d7847a8dSBrooks Davis * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23d7847a8dSBrooks Davis * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24d7847a8dSBrooks Davis * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25d7847a8dSBrooks Davis * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26d7847a8dSBrooks Davis * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27d7847a8dSBrooks Davis * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28d7847a8dSBrooks Davis * SUCH DAMAGE.
29d7847a8dSBrooks Davis */
30d7847a8dSBrooks Davis
31d7847a8dSBrooks Davis #include "namespace.h"
32d7847a8dSBrooks Davis #include <sys/types.h>
33d7847a8dSBrooks Davis #include <sys/wait.h>
34d7847a8dSBrooks Davis #include <stddef.h>
35d7847a8dSBrooks Davis #include <string.h>
36d7847a8dSBrooks Davis #include <signal.h>
37d7847a8dSBrooks Davis #include <errno.h>
38d7847a8dSBrooks Davis #include "un-namespace.h"
39d7847a8dSBrooks Davis #include "libc_private.h"
40d7847a8dSBrooks Davis
41d7847a8dSBrooks Davis int __waitid(idtype_t, id_t, siginfo_t *, int);
42d7847a8dSBrooks Davis
43d7847a8dSBrooks Davis int
__waitid(idtype_t idtype,id_t id,siginfo_t * info,int flags)44d7847a8dSBrooks Davis __waitid(idtype_t idtype, id_t id, siginfo_t *info, int flags)
45d7847a8dSBrooks Davis {
46d7847a8dSBrooks Davis int status;
47d7847a8dSBrooks Davis pid_t ret;
48d7847a8dSBrooks Davis
497dd9070eSBrooks Davis ret = INTERPOS_SYS(wait6, idtype, id, &status, flags, NULL, info);
50d7847a8dSBrooks Davis
51d7847a8dSBrooks Davis /*
52d7847a8dSBrooks Davis * According to SUSv4, waitid() shall not return a PID when a
53d7847a8dSBrooks Davis * process is found, but only 0. If a process was actually
54d7847a8dSBrooks Davis * found, siginfo_t fields si_signo and si_pid will be
55d7847a8dSBrooks Davis * non-zero. In case WNOHANG was set in the flags and no
56d7847a8dSBrooks Davis * process was found those fields are set to zero using
57d7847a8dSBrooks Davis * memset() below.
58d7847a8dSBrooks Davis */
59d7847a8dSBrooks Davis if (ret == 0 && info != NULL)
60d7847a8dSBrooks Davis memset(info, 0, sizeof(*info));
61d7847a8dSBrooks Davis else if (ret > 0)
62d7847a8dSBrooks Davis ret = 0;
63d7847a8dSBrooks Davis return (ret);
64d7847a8dSBrooks Davis }
65d7847a8dSBrooks Davis
66d7847a8dSBrooks Davis __weak_reference(__waitid, waitid);
67d7847a8dSBrooks Davis __weak_reference(__waitid, _waitid);
68