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The V* flags passed using an accmode_t to the access() and open()

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access control checks in mac_bsdextended are not in the same
namespace as the MBI_ flags used in ugidfw policies, so add an
explicit conversion routine to get from one to the other.

Obtained from:	TrustedBSD Project
This commit is contained in:
Robert Watson 2008-10-30 10:13:53 +00:00
parent 2726c918a7
commit a1b9471a47
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=184467
3 changed files with 26 additions and 12 deletions
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23
sys/security/mac_bsdextended/mac_bsdextended.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002, 2007 Robert N. M. Watson
* Copyright (c) 1999-2002, 2007-2008 Robert N. M. Watson
* Copyright (c) 2001-2005 Networks Associates Technology, Inc.
* Copyright (c) 2005 Tom Rhodes
* Copyright (c) 2006 SPARTA, Inc.
@ -465,6 +465,27 @@ ugidfw_check_vp(struct ucred *cred, struct vnode *vp, int acc_mode)
return (ugidfw_check(cred, vp, &vap, acc_mode));
}
int
ugidfw_accmode2mbi(accmode_t accmode)
{
int mbi;
mbi = 0;
if (accmode & VEXEC)
mbi |= MBI_EXEC;
if (accmode & VWRITE)
mbi |= MBI_WRITE;
if (accmode & VREAD)
mbi |= MBI_READ;
if (accmode & VADMIN)
mbi |= MBI_ADMIN;
if (accmode & VSTAT)
mbi |= MBI_STAT;
if (accmode & VAPPEND)
mbi |= MBI_APPEND;
return (mbi);
}
static struct mac_policy_ops ugidfw_ops =
{
.mpo_destroy = ugidfw_destroy,

1
sys/security/mac_bsdextended/ugidfw_internal.h
View File

@ -34,6 +34,7 @@
/*
* Central access control routines used by object-specific checks.
*/
int ugidfw_accmode2mbi(accmode_t accmode);
int ugidfw_check(struct ucred *cred, struct vnode *vp, struct vattr *vap,
int acc_mode);
int ugidfw_check_vp(struct ucred *cred, struct vnode *vp, int acc_mode);

14
sys/security/mac_bsdextended/ugidfw_vnode.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002, 2007 Robert N. M. Watson
* Copyright (c) 1999-2002, 2007-2008 Robert N. M. Watson
* Copyright (c) 2001-2005 Networks Associates Technology, Inc.
* Copyright (c) 2005 Tom Rhodes
* Copyright (c) 2006 SPARTA, Inc.
@ -65,11 +65,7 @@ ugidfw_vnode_check_access(struct ucred *cred, struct vnode *vp,
struct label *vplabel, accmode_t accmode)
{
/*
* XXX: We pass accmode_t variable containing V* constants
* as an int containing MBI_* constants.
*/
return (ugidfw_check_vp(cred, vp, (int)accmode));
return (ugidfw_check_vp(cred, vp, ugidfw_accmode2mbi(accmode)));
}
int
@ -175,11 +171,7 @@ ugidfw_vnode_check_open(struct ucred *cred, struct vnode *vp,
struct label *vplabel, accmode_t accmode)
{
/*
* XXX: We pass accmode_t variable containing V* constants
* as an int containing MBI_* constants.
*/
return (ugidfw_check_vp(cred, vp, (int)accmode));
return (ugidfw_check_vp(cred, vp, ugidfw_accmode2mbi(accmode)));
}
int