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acquire proclist_lock for SESSHOLD/SESSRELE.

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This commit is contained in:
yamt 2008-04-17 14:07:31 +00:00
parent bc397338d9
commit 69bbf68c6e
1 changed files with 8 additions and 5 deletions
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13
sys/kern/subr_prf.c
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@ -1,4 +1,4 @@
/* $NetBSD: subr_prf.c,v 1.117 2008/04/12 17:16:09 ad Exp $ */
/* $NetBSD: subr_prf.c,v 1.118 2008/04/17 14:07:31 yamt Exp $ */
/*-
* Copyright (c) 1986, 1988, 1991, 1993
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: subr_prf.c,v 1.117 2008/04/12 17:16:09 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: subr_prf.c,v 1.118 2008/04/17 14:07:31 yamt Exp $");
#include "opt_ddb.h"
#include "opt_ipkdb.h"
@ -467,12 +467,12 @@ tprintf_open(struct proc *p)
cookie = NULL;
/* mutex_enter(&proclist_mutex); XXXSMP */
mutex_enter(&proclist_lock);
if (p->p_lflag & PL_CONTROLT && p->p_session->s_ttyvp) {
SESSHOLD(p->p_session);
cookie = (tpr_t)p->p_session;
}
/* mutex_exit(&proclist_mutex) XXXSMP */
mutex_exit(&proclist_lock);
return cookie;
}
@ -485,8 +485,11 @@ void
tprintf_close(tpr_t sess)
{
if (sess)
if (sess) {
mutex_enter(&proclist_lock);
SESSRELE((struct session *) sess);
mutex_exit(&proclist_lock);
}
}
/*