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simplify & fix logic in device/rawio/spec.

This commit is contained in:
elad 2006-11-06 02:02:18 +00:00
parent 66e42f0f77
commit 993da55808
1 changed files with 13 additions and 12 deletions
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25
sys/secmodel/bsd44/secmodel_bsd44_securelevel.c
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@ -1,4 +1,4 @@
/* $NetBSD: secmodel_bsd44_securelevel.c,v 1.11 2006/11/04 09:56:59 elad Exp $ */
/* $NetBSD: secmodel_bsd44_securelevel.c,v 1.12 2006/11/06 02:02:18 elad Exp $ */
/*-
* Copyright (c) 2006 Elad Efrat <elad@NetBSD.org>
* All rights reserved.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: secmodel_bsd44_securelevel.c,v 1.11 2006/11/04 09:56:59 elad Exp $");
__KERNEL_RCSID(0, "$NetBSD: secmodel_bsd44_securelevel.c,v 1.12 2006/11/06 02:02:18 elad Exp $");
#ifdef _KERNEL_OPT
#include "opt_insecure.h"
@ -354,12 +354,14 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
case KAUTH_DEVICE_RAWIO_SPEC: {
struct vnode *vp;
dev_t dev;
int d_type;
vp = arg1;
KASSERT(vp != NULL);
dev = vp->v_un.vu_specinfo->si_rdev;
d_type = D_OTHER;
/* Handle /dev/mem and /dev/kmem. */
if ((vp->v_type == VCHR) && iskmemdev(dev)) {
@ -394,11 +396,8 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
const struct cdevsw *cdev;
cdev = cdevsw_lookup(dev);
if ((cdev == NULL) ||
(cdev->d_type != D_DISK)) {
result = KAUTH_RESULT_ALLOW;
break;
}
if (cdev != NULL)
d_type = cdev->d_type;
break;
}
@ -406,11 +405,8 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
const struct bdevsw *bdev;
bdev = bdevsw_lookup(dev);
if ((bdev == NULL) ||
(bdev->d_type != D_DISK)) {
result = KAUTH_RESULT_ALLOW;
break;
}
if (bdev != NULL)
d_type = bdev->d_type;
break;
}
@ -419,6 +415,11 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
break;
}
if (d_type != D_DISK) {
result = KAUTH_RESULT_ALLOW;
break;
}
if (vfs_mountedon(vp) && (securelevel > 0))
break;