freebsd-skq/sys/security/mac/mac_label.c
rwatson 7beaaf5cd2 Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h
begun with a repo-copy of mac.h to mac_framework.h.  sys/mac.h now
contains the userspace and user<->kernel API and definitions, with all
in-kernel interfaces moved to mac_framework.h, which is now included
across most of the kernel instead.

This change is the first step in a larger cleanup and sweep of MAC
Framework interfaces in the kernel, and will not be MFC'd.

Obtained from:	TrustedBSD Project
Sponsored by:	SPARTA
2006-10-22 11:52:19 +00:00

102 lines
3.0 KiB
C

/*-
* Copyright (c) 2003-2004 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project in part by Network
* Associates Laboratories, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
* as part of the DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/mac.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <vm/uma.h>
#include <security/mac/mac_framework.h>
#include <security/mac/mac_internal.h>
uma_zone_t zone_label;
static int mac_labelzone_ctor(void *mem, int size, void *arg, int flags);
static void mac_labelzone_dtor(void *mem, int size, void *arg);
void
mac_labelzone_init(void)
{
zone_label = uma_zcreate("MAC labels", sizeof(struct label),
mac_labelzone_ctor, mac_labelzone_dtor, NULL, NULL,
UMA_ALIGN_PTR, 0);
}
static int
mac_labelzone_ctor(void *mem, int size, void *arg, int flags)
{
struct label *label;
KASSERT(size == sizeof(*label), ("mac_labelzone_ctor: wrong size\n"));
label = mem;
bzero(label, sizeof(*label));
label->l_flags = MAC_FLAG_INITIALIZED;
return (0);
}
static void
mac_labelzone_dtor(void *mem, int size, void *arg)
{
struct label *label;
KASSERT(size == sizeof(*label), ("mac_labelzone_dtor: wrong size\n"));
label = mem;
KASSERT(label->l_flags & MAC_FLAG_INITIALIZED,
("mac_labelzone_dtor: label not initialized"));
#ifdef DIAGNOSTIC
bzero(label, sizeof(*label));
#else
label->l_flags &= ~MAC_FLAG_INITIALIZED;
#endif
}
struct label *
mac_labelzone_alloc(int flags)
{
return (uma_zalloc(zone_label, flags));
}
void
mac_labelzone_free(struct label *label)
{
uma_zfree(zone_label, label);
}