mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
50b076f4dd
* sysdeps/mach/hurd/wait4.c (__wait4): When proc_wait returns EAGAIN, return zero to indicate no children died yet (assuming WNOHANG). * sysdeps/mach/hurd/setsid.c: #include <hurd/fd.h>. 1999-09-17 Roland McGrath <roland@baalperazim.frob.com> * hurd/port2fd.c (_hurd_port2fd): Never change CTTYID port. * sysdeps/mach/hurd/setsid.c (__setsid): Fix return type -> pid_t. Return _hurd_pgrp instead of 0.
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/* Copyright (C) 1993,94,95,96,97,98,99 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <errno.h>
|
|
#include <hurd.h>
|
|
#include <hurd/port.h>
|
|
|
|
pid_t
|
|
__wait4 (pid_t pid, __WAIT_STATUS_DEFN stat_loc, int options,
|
|
struct rusage *usage)
|
|
{
|
|
pid_t dead;
|
|
error_t err;
|
|
struct rusage ignored;
|
|
natural_t sigcode;
|
|
int dummy;
|
|
|
|
err = __USEPORT (PROC, __proc_wait (port, pid, options,
|
|
stat_loc ?: &dummy, &sigcode,
|
|
usage ?: &ignored, &dead));
|
|
switch (err)
|
|
{
|
|
case 0: /* Got a child. */
|
|
return dead;
|
|
case EAGAIN:
|
|
/* The RPC returns this error when the WNOHANG flag is set and no
|
|
selected children are dead (but some are living). In that
|
|
situation, our return value is zero. (The RPC can't return zero
|
|
for DEAD without also returning some garbage for the other out
|
|
parameters, so an error return is much more natural here. Hence
|
|
the difference between the RPC and the POSIX.1 interface. */
|
|
return (pid_t) 0;
|
|
default:
|
|
return (pid_t) __hurd_fail (err);
|
|
}
|
|
}
|
|
|
|
weak_alias (__wait4, wait4)
|