mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/* Copyright (C) 1991, 1995 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#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
|
|
DEFUN(__waitpid, (pid, stat_loc, options),
|
|
pid_t pid AND int *stat_loc AND int options)
|
|
{
|
|
if ((options & ~(WNOHANG|WUNTRACED)) != 0)
|
|
{
|
|
errno = EINVAL;
|
|
return (pid_t) -1;
|
|
}
|
|
|
|
errno = ENOSYS;
|
|
return (pid_t) -1;
|
|
}
|
|
stub_warning (waitpid)
|
|
|
|
weak_alias (__waitpid, waitpid)
|