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use dk_openlock when accessing openmask.

This commit is contained in:
mlelstv 2015-08-02 11:40:41 +00:00
parent bf94bade59
commit 6297339c02
1 changed files with 9 additions and 2 deletions
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11
sys/dev/vnd.c
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@ -1,4 +1,4 @@
/* $NetBSD: vnd.c,v 1.246 2015/07/28 13:12:47 prlw1 Exp $ */
/* $NetBSD: vnd.c,v 1.247 2015/08/02 11:40:41 mlelstv Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2008 The NetBSD Foundation, Inc.
@ -91,7 +91,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vnd.c,v 1.246 2015/07/28 13:12:47 prlw1 Exp $");
__KERNEL_RCSID(0, "$NetBSD: vnd.c,v 1.247 2015/08/02 11:40:41 mlelstv Exp $");
#if defined(_KERNEL_OPT)
#include "opt_vnd.h"
@ -343,6 +343,8 @@ vndopen(dev_t dev, int flags, int mode, struct lwp *l)
if ((error = vndlock(sc)) != 0)
return error;
mutex_enter(&sc->sc_dkdev.dk_openlock);
if ((sc->sc_flags & VNF_CLEARING) != 0) {
error = ENXIO;
goto done;
@ -403,6 +405,7 @@ vndopen(dev_t dev, int flags, int mode, struct lwp *l)
sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask;
done:
mutex_exit(&sc->sc_dkdev.dk_openlock);
vndunlock(sc);
return error;
}
@ -425,6 +428,8 @@ vndclose(dev_t dev, int flags, int mode, struct lwp *l)
if ((error = vndlock(sc)) != 0)
return error;
mutex_enter(&sc->sc_dkdev.dk_openlock);
part = DISKPART(dev);
/* ...that much closer to allowing unconfiguration... */
@ -446,6 +451,8 @@ vndclose(dev_t dev, int flags, int mode, struct lwp *l)
sc->sc_flags &= ~VNF_VLABEL;
}
mutex_exit(&sc->sc_dkdev.dk_openlock);
vndunlock(sc);
if ((sc->sc_flags & VNF_INITED) == 0) {