1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <stdlib.h>
20 #include <sys/wait.h>
21
22
23 /* Wait for a child matching PID to die.
24 If PID is greater than 0, match any process whose process ID is PID.
25 If PID is (pid_t) -1, match any process.
26 If PID is (pid_t) 0, match any process with the
27 same process group as the current process.
28 If PID is less than -1, match any process whose
29 process group is the absolute value of PID.
30 If the WNOHANG bit is set in OPTIONS, and that child
31 is not already dead, return (pid_t) 0. If successful,
32 return PID and store the dead child's status in STAT_LOC.
33 Return (pid_t) -1 for errors. If the WUNTRACED bit is set in OPTIONS,
34 return status for stopped children; otherwise don't. */
35 pid_t
__waitpid(pid_t pid,int * stat_loc,int options)36 __waitpid (pid_t pid, int *stat_loc, int options)
37 {
38 return __wait4 (pid, stat_loc, options, NULL);
39 }
40 libc_hidden_def (__waitpid)
41 weak_alias (__waitpid, waitpid)
42