[apple/xnu.git] / security / mac_sysv_msg.c

/*
 * Copyright (c) 2007 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*-
 * Copyright (c) 2003-2005 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>

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/sbuf.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/file.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <sys/msg.h>

#include <security/mac_internal.h>

static struct label *
mac_sysv_msgmsg_label_alloc(void)
{
	struct label *label;

	label = mac_labelzone_alloc(MAC_WAITOK);
	if (label == NULL)
		return (NULL);
	MAC_PERFORM(sysvmsg_label_init, label);
	return (label);
}

void
mac_sysvmsg_label_init(struct msg *msgptr)
{

	msgptr->label = mac_sysv_msgmsg_label_alloc();
}

static struct label *
mac_sysv_msgqueue_label_alloc(void)
{
	struct label *label;

	label = mac_labelzone_alloc(MAC_WAITOK);
	if (label == NULL)
		return (NULL);
	MAC_PERFORM(sysvmsq_label_init, label);
	return (label);
}

void
mac_sysvmsq_label_init(struct msqid_kernel *msqptr)
{

	msqptr->label = mac_sysv_msgqueue_label_alloc();
}

void
mac_sysvmsg_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr, 
    struct msg *msgptr)
{
				
	MAC_PERFORM(sysvmsg_label_associate, cred, msqptr, msqptr->label, 
		msgptr, msgptr->label);
}

void
mac_sysvmsq_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr)
{
				
	MAC_PERFORM(sysvmsq_label_associate, cred, msqptr, msqptr->label);
}

void
mac_sysvmsg_label_recycle(struct msg *msgptr)
{

	MAC_PERFORM(sysvmsg_label_recycle, msgptr->label);
}

void
mac_sysvmsq_label_recycle(struct msqid_kernel *msqptr)
{
				
	MAC_PERFORM(sysvmsq_label_recycle, msqptr->label);
}

int
mac_sysvmsq_check_enqueue(kauth_cred_t cred, struct msg *msgptr,
	struct msqid_kernel *msqptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_enqueue, cred,  msgptr, msgptr->label, msqptr,
	    msqptr->label);

	return(error);
}

int
mac_sysvmsq_check_msgrcv(kauth_cred_t cred, struct msg *msgptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msgrcv, cred, msgptr, msgptr->label);

	return(error);
}

int
mac_sysvmsq_check_msgrmid(kauth_cred_t cred, struct msg *msgptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msgrmid, cred,  msgptr, msgptr->label);

	return(error);
}

int
mac_sysvmsq_check_msqget(kauth_cred_t cred, struct msqid_kernel *msqptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msqget, cred, msqptr, msqptr->label);

	return(error);
}

int
mac_sysvmsq_check_msqsnd(kauth_cred_t cred, struct msqid_kernel *msqptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msqsnd, cred, msqptr, msqptr->label);

	return(error);
}

int
mac_sysvmsq_check_msqrcv(kauth_cred_t cred, struct msqid_kernel *msqptr)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msqrcv, cred, msqptr, msqptr->label);

	return(error);
}

int
mac_sysvmsq_check_msqctl(kauth_cred_t cred, struct msqid_kernel *msqptr,
    int cmd)
{
	int error;

#if SECURITY_MAC_CHECK_ENFORCE
    /* 21167099 - only check if we allow write */
    if (!mac_sysvmsg_enforce)
        return (0);
#endif

	MAC_CHECK(sysvmsq_check_msqctl, cred, msqptr, msqptr->label, cmd);

	return(error);
}
Commit	Line	Data
2d21ac55 A	1	/*
	2	* Copyright (c) 2007 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28	/*-
	29	* Copyright (c) 2003-2005 Networks Associates Technology, Inc.
	30	* All rights reserved.
	31	*
	32	* This software was developed for the FreeBSD Project in part by Network
	33	* Associates Laboratories, the Security Research Division of Network
	34	* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
	35	* as part of the DARPA CHATS research program.
	36	*
	37	* Redistribution and use in source and binary forms, with or without
	38	* modification, are permitted provided that the following conditions
	39	* are met:
	40	* 1. Redistributions of source code must retain the above copyright
	41	* notice, this list of conditions and the following disclaimer.
	42	* 2. Redistributions in binary form must reproduce the above copyright
	43	* notice, this list of conditions and the following disclaimer in the
	44	* documentation and/or other materials provided with the distribution.
	45	*
	46	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	47	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	48	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	49	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	50	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	51	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	52	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	53	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	54	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	55	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	56	* SUCH DAMAGE.
	57	*/
	58
	59	#include <sys/cdefs.h>
	60
	61	#include <sys/param.h>
	62	#include <sys/systm.h>
	63	#include <sys/kernel.h>
	64	#include <sys/lock.h>
65	#include <sys/malloc.h>
66	#include <sys/sbuf.h>
67	#include <sys/systm.h>
68	#include <sys/vnode.h>
69	#include <sys/mount.h>
70	#include <sys/file.h>
71	#include <sys/namei.h>
72	#include <sys/sysctl.h>
73	#include <sys/msg.h>
74
75	#include <security/mac_internal.h>
76
77	static struct label *
78	mac_sysv_msgmsg_label_alloc(void)
79	{
80	struct label *label;
81
82	label = mac_labelzone_alloc(MAC_WAITOK);
83	if (label == NULL)
84	return (NULL);
85	MAC_PERFORM(sysvmsg_label_init, label);
86	return (label);
87	}
88
89	void
90	mac_sysvmsg_label_init(struct msg *msgptr)
91	{
92
93	msgptr->label = mac_sysv_msgmsg_label_alloc();
94	}
95
96	static struct label *
97	mac_sysv_msgqueue_label_alloc(void)
98	{
99	struct label *label;
100
101	label = mac_labelzone_alloc(MAC_WAITOK);
102	if (label == NULL)
103	return (NULL);
104	MAC_PERFORM(sysvmsq_label_init, label);
105	return (label);
106	}
107
108	void
109	mac_sysvmsq_label_init(struct msqid_kernel *msqptr)
110	{
111
112	msqptr->label = mac_sysv_msgqueue_label_alloc();
113	}
114
115	void
116	mac_sysvmsg_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr,
117	struct msg *msgptr)
118	{
119
120	MAC_PERFORM(sysvmsg_label_associate, cred, msqptr, msqptr->label,
121	msgptr, msgptr->label);
122	}
123
124	void
125	mac_sysvmsq_label_associate(kauth_cred_t cred, struct msqid_kernel *msqptr)
126	{
127
128	MAC_PERFORM(sysvmsq_label_associate, cred, msqptr, msqptr->label);
129	}
130
131	void
132	mac_sysvmsg_label_recycle(struct msg *msgptr)
133	{
134
135	MAC_PERFORM(sysvmsg_label_recycle, msgptr->label);
136	}
137
138	void
139	mac_sysvmsq_label_recycle(struct msqid_kernel *msqptr)
140	{
141
142	MAC_PERFORM(sysvmsq_label_recycle, msqptr->label);
143	}
144
145	int
146	mac_sysvmsq_check_enqueue(kauth_cred_t cred, struct msg *msgptr,
147	struct msqid_kernel *msqptr)
148	{
149	int error;
150
3e170ce0 A	151	#if SECURITY_MAC_CHECK_ENFORCE
	152	/* 21167099 - only check if we allow write */
	153	if (!mac_sysvmsg_enforce)
	154	return (0);
	155	#endif
2d21ac55 A	156
	157	MAC_CHECK(sysvmsq_check_enqueue, cred, msgptr, msgptr->label, msqptr,
	158	msqptr->label);
	159
	160	return(error);
	161	}
	162
	163	int
	164	mac_sysvmsq_check_msgrcv(kauth_cred_t cred, struct msg *msgptr)
	165	{
	166	int error;
	167
3e170ce0 A	168	#if SECURITY_MAC_CHECK_ENFORCE
	169	/* 21167099 - only check if we allow write */
	170	if (!mac_sysvmsg_enforce)
	171	return (0);
	172	#endif
2d21ac55 A	173
	174	MAC_CHECK(sysvmsq_check_msgrcv, cred, msgptr, msgptr->label);
	175
	176	return(error);
	177	}
	178
	179	int
	180	mac_sysvmsq_check_msgrmid(kauth_cred_t cred, struct msg *msgptr)
	181	{
	182	int error;
	183
3e170ce0 A	184	#if SECURITY_MAC_CHECK_ENFORCE
	185	/* 21167099 - only check if we allow write */
	186	if (!mac_sysvmsg_enforce)
	187	return (0);
	188	#endif
2d21ac55 A	189
	190	MAC_CHECK(sysvmsq_check_msgrmid, cred, msgptr, msgptr->label);
	191
	192	return(error);
	193	}
	194
	195	int
	196	mac_sysvmsq_check_msqget(kauth_cred_t cred, struct msqid_kernel *msqptr)
	197	{
	198	int error;
	199
3e170ce0 A	200	#if SECURITY_MAC_CHECK_ENFORCE
	201	/* 21167099 - only check if we allow write */
	202	if (!mac_sysvmsg_enforce)
	203	return (0);
	204	#endif
2d21ac55 A	205
	206	MAC_CHECK(sysvmsq_check_msqget, cred, msqptr, msqptr->label);
	207
	208	return(error);
	209	}
	210
	211	int
	212	mac_sysvmsq_check_msqsnd(kauth_cred_t cred, struct msqid_kernel *msqptr)
	213	{
	214	int error;
	215
3e170ce0 A	216	#if SECURITY_MAC_CHECK_ENFORCE
	217	/* 21167099 - only check if we allow write */
	218	if (!mac_sysvmsg_enforce)
	219	return (0);
	220	#endif
2d21ac55 A	221
	222	MAC_CHECK(sysvmsq_check_msqsnd, cred, msqptr, msqptr->label);
	223
	224	return(error);
	225	}
	226
	227	int
	228	mac_sysvmsq_check_msqrcv(kauth_cred_t cred, struct msqid_kernel *msqptr)
	229	{
	230	int error;
	231
3e170ce0 A	232	#if SECURITY_MAC_CHECK_ENFORCE
	233	/* 21167099 - only check if we allow write */
	234	if (!mac_sysvmsg_enforce)
	235	return (0);
	236	#endif
2d21ac55 A	237
	238	MAC_CHECK(sysvmsq_check_msqrcv, cred, msqptr, msqptr->label);
	239
	240	return(error);
	241	}
	242
	243	int
	244	mac_sysvmsq_check_msqctl(kauth_cred_t cred, struct msqid_kernel *msqptr,
	245	int cmd)
	246	{
	247	int error;
	248
3e170ce0 A	249	#if SECURITY_MAC_CHECK_ENFORCE
	250	/* 21167099 - only check if we allow write */
	251	if (!mac_sysvmsg_enforce)
	252	return (0);
	253	#endif
2d21ac55 A	254
	255	MAC_CHECK(sysvmsq_check_msqctl, cred, msqptr, msqptr->label, cmd);
	256
	257	return(error);
	258	}