Better VCHR handling.
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23c8f132c9
commit
75451f036c
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@ -1,4 +1,4 @@
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/* $NetBSD: secmodel_bsd44_securelevel.c,v 1.12 2006/11/06 02:02:18 elad Exp $ */
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/* $NetBSD: secmodel_bsd44_securelevel.c,v 1.13 2006/11/07 08:53:49 elad Exp $ */
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/*-
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* Copyright (c) 2006 Elad Efrat <elad@NetBSD.org>
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* All rights reserved.
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@ -38,7 +38,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: secmodel_bsd44_securelevel.c,v 1.12 2006/11/06 02:02:18 elad Exp $");
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__KERNEL_RCSID(0, "$NetBSD: secmodel_bsd44_securelevel.c,v 1.13 2006/11/07 08:53:49 elad Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_insecure.h"
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@ -352,7 +352,7 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
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switch (action) {
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case KAUTH_DEVICE_RAWIO_SPEC: {
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struct vnode *vp;
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struct vnode *vp, *bvp;
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dev_t dev;
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int d_type;
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@ -362,6 +362,7 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
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dev = vp->v_un.vu_specinfo->si_rdev;
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d_type = D_OTHER;
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bvp = NULL;
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/* Handle /dev/mem and /dev/kmem. */
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if ((vp->v_type == VCHR) && iskmemdev(dev)) {
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@ -396,8 +397,16 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
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const struct cdevsw *cdev;
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cdev = cdevsw_lookup(dev);
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if (cdev != NULL)
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d_type = cdev->d_type;
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if (cdev != NULL) {
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dev_t blkdev;
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blkdev = devsw_chr2blk(dev);
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if (blkdev != NODEV) {
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vfinddev(blkdev, VBLK, &bvp);
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if (bvp != NULL)
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d_type = cdev->d_type;
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}
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}
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break;
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}
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@ -408,6 +417,8 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
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if (bdev != NULL)
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d_type = bdev->d_type;
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bvp = vp;
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break;
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}
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default:
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@ -420,7 +431,7 @@ secmodel_bsd44_securelevel_device_cb(kauth_cred_t cred __unused,
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break;
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}
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if (vfs_mountedon(vp) && (securelevel > 0))
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if (vfs_mountedon(bvp) && (securelevel > 0))
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break;
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if (securelevel < 2)
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