mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 15:20:10 +00:00
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* Copyright (C) 1991-2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/types.h>
|
|
|
|
|
|
/* Wait for a child matching PID to die.
|
|
If PID is greater than 0, match any process whose process ID is PID.
|
|
If PID is (pid_t) -1, match any process.
|
|
If PID is (pid_t) 0, match any process with the
|
|
same process group as the current process.
|
|
If PID is less than -1, match any process whose
|
|
process group is the absolute value of PID.
|
|
If the WNOHANG bit is set in OPTIONS, and that child
|
|
is not already dead, return (pid_t) 0. If successful,
|
|
return PID and store the dead child's status in STAT_LOC.
|
|
Return (pid_t) -1 for errors. If the WUNTRACED bit is set in OPTIONS,
|
|
return status for stopped children; otherwise don't. */
|
|
pid_t
|
|
__libc_waitpid (pid_t pid, int *stat_loc, int options)
|
|
{
|
|
if ((options & ~(WNOHANG|WUNTRACED)) != 0)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return (pid_t) -1;
|
|
}
|
|
|
|
__set_errno (ENOSYS);
|
|
return (pid_t) -1;
|
|
}
|
|
weak_alias (__libc_waitpid, __waitpid)
|
|
libc_hidden_weak (__waitpid)
|
|
weak_alias (__libc_waitpid, waitpid)
|
|
|
|
stub_warning (waitpid)
|