1/*-
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)kern_exit.c 8.7 (Berkeley) 2/12/94
35 */
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/sys/kern/kern_exit.c 159054 2006-05-29 21:28:56Z tegge $");
39
40#include "opt_compat.h"
41#include "opt_ktrace.h"
42#include "opt_mac.h"
43
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/sysproto.h>

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108 * status and rusage for wait(). Check for child processes and orphan them.
109 */
110void
111exit1(struct thread *td, int rv)
112{
113 struct proc *p, *nq, *q;
114 struct tty *tp;
115 struct vnode *ttyvp;
116 struct vnode *vtmp;
117#ifdef KTRACE
118 struct vnode *tracevp;
119 struct ucred *tracecred;
120#endif
121 struct plimit *plim;
122 int locked;
123
124 /*
125 * Drop Giant if caller has it. Eventually we should warn about
126 * being called with Giant held.
127 */
128 while (mtx_owned(&Giant))
129 mtx_unlock(&Giant);
130

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294 q = p->p_leader;
295 while (q->p_peers != p)
296 q = q->p_peers;
297 q->p_peers = p->p_peers;
298 wakeup(p->p_leader);
299 }
300 mtx_unlock(&ppeers_lock);
301
302 vmspace_exit(td);
303
304 sx_xlock(&proctree_lock);
305 if (SESS_LEADER(p)) {
306 struct session *sp;
307
308 sp = p->p_session;
309 if (sp->s_ttyvp) {
310 locked = VFS_LOCK_GIANT(sp->s_ttyvp->v_mount);

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