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syscall_fancy/plain: add assertions to detect PHOLD leaks.

This commit is contained in:
yamt 2004-04-20 12:00:02 +00:00
parent 88005c19af
commit c13fd66a5d
1 changed files with 12 additions and 2 deletions
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14
sys/arch/i386/i386/syscall.c
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@ -1,4 +1,4 @@
/* $NetBSD: syscall.c,v 1.27 2003/10/31 03:28:13 simonb Exp $ */
/* $NetBSD: syscall.c,v 1.28 2004/04/20 12:00:02 yamt Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: syscall.c,v 1.27 2003/10/31 03:28:13 simonb Exp $");
__KERNEL_RCSID(0, "$NetBSD: syscall.c,v 1.28 2004/04/20 12:00:02 yamt Exp $");
#include "opt_syscall_debug.h"
#include "opt_vm86.h"
@ -152,6 +152,8 @@ syscall_plain(frame)
rval[0] = 0;
rval[1] = 0;
KASSERT(l->l_holdcnt == 0);
if (callp->sy_flags & SYCALL_MPSAFE) {
error = (*callp->sy_call)(l, args, rval);
} else {
@ -160,6 +162,8 @@ syscall_plain(frame)
KERNEL_PROC_UNLOCK(l);
}
KASSERT(l->l_holdcnt == 0);
switch (error) {
case 0:
frame->tf_eax = rval[0];
@ -247,6 +251,9 @@ syscall_fancy(frame)
rval[0] = 0;
rval[1] = 0;
KASSERT(l->l_holdcnt == 0);
if (callp->sy_flags & SYCALL_MPSAFE) {
KERNEL_PROC_UNLOCK(l);
error = (*callp->sy_call)(l, args, rval);
@ -254,6 +261,9 @@ syscall_fancy(frame)
error = (*callp->sy_call)(l, args, rval);
KERNEL_PROC_UNLOCK(l);
}
KASSERT(l->l_holdcnt == 0);
switch (error) {
case 0:
frame->tf_eax = rval[0];