mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-31 22:10:34 +03:00
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Copyright (C) 1993,1994,1995,1996,1997,2002 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 <unistd.h>
|
|
#include <hurd.h>
|
|
#include <hurd/port.h>
|
|
|
|
/* Set the process group ID of the process matching PID to PGID.
|
|
If PID is zero, the current process's process group ID is set.
|
|
If PGID is zero, the process ID of the process is used. */
|
|
int
|
|
__setpgid (pid, pgid)
|
|
pid_t pid;
|
|
pid_t pgid;
|
|
{
|
|
error_t err;
|
|
unsigned int stamp;
|
|
|
|
stamp = _hurd_pids_changed_stamp; /* Atomic fetch. */
|
|
|
|
if (err = __USEPORT (PROC, __proc_setpgrp (port, pid, pgid)))
|
|
return __hurd_fail (err);
|
|
|
|
if (pid == 0 || pid == _hurd_pid)
|
|
/* Synchronize with the signal thread to make sure we have
|
|
received and processed proc_newids before returning to the user. */
|
|
while (_hurd_pids_changed_stamp == stamp)
|
|
{
|
|
#ifdef noteven
|
|
/* XXX we have no need for a mutex, but cthreads demands one. */
|
|
__condition_wait (&_hurd_pids_changed_sync, NULL);
|
|
#else
|
|
__swtch_pri(0);
|
|
#endif
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
libc_hidden_def (__setpgid)
|
|
weak_alias (__setpgid, setpgid)
|