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Introduce accessor functions mac_label_get() and mac_label_set() to replace

Browse Source 
LABEL_TO_SLOT() macro used by policy modules to query and set label data
in struct label.  Instead of using a union, store an intptr_t, simplifying
the API.

Update policies: in most cases this required only small tweaks to current
wrapper macros.  In two cases, a single wrapper macros had to be split into
separate get and set macros.

Move struct label definition from _label.h to mac_internal.h and remove
_label.h.  With this change, policies may now treat struct label * as
opaque, allowing us to change the layout of struct label without breaking
the policy module ABI.  For example, we could make the maximum number of
policies with labels modifiable at boot-time rather than just at
compile-time.

Obtained from:	TrustedBSD Project
This commit is contained in:
Robert Watson 2007-02-06 14:19:25 +00:00
parent 21389c94d9
commit 0142affc77
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=166533
10 changed files with 107 additions and 134 deletions
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3
sys/security/mac/mac_framework.h
View File

@ -50,8 +50,6 @@
#error "no user-serviceable parts inside"
#endif
#include <sys/_label.h>
struct bpf_d;
struct cdev;
struct componentname;
@ -62,6 +60,7 @@ struct image_params;
struct inpcb;
struct ipq;
struct ksem;
struct label;
struct m_tag;
struct mac;
struct mbuf;

19
sys/security/mac/mac_internal.h
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 1999-2002, 2006 Robert N. M. Watson
* Copyright (c) 2001 Ilmar S. Habibulin
* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
* Copyright (c) 2006 nCircle Network Security, Inc.
@ -62,6 +62,23 @@ LIST_HEAD(mac_policy_list_head, mac_policy_conf);
MALLOC_DECLARE(M_MACTEMP);
#endif
/*
* MAC labels -- in-kernel storage format.
*
* In general, struct label pointers are embedded in kernel data structures
* representing objects that may be labeled (and protected). Struct label is
* opaque to both kernel services that invoke the MAC Framework and MAC
* policy modules. In particular, we do not wish to encode the layout of the
* label structure into any ABIs. Historically, the slot array contained
* unions of {long, void} but now contains uintptr_t.
*/
#define MAC_MAX_SLOTS 4
#define MAC_FLAG_INITIALIZED 0x0000001 /* Is initialized for use. */
struct label {
int l_flags;
intptr_t l_perpolicy[MAC_MAX_SLOTS];
};
/*
* MAC Framework global variables.
*/

24
sys/security/mac/mac_label.c
View File

@ -1,5 +1,6 @@
/*-
* Copyright (c) 2003-2004 Networks Associates Technology, Inc.
* Copyright (c) 2007 Robert N. M. Watson
* All rights reserved.
*
* This software was developed for the FreeBSD Project in part by Network
@ -35,6 +36,7 @@ __FBSDID("$FreeBSD$");
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
@ -42,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <security/mac/mac_framework.h>
#include <security/mac/mac_internal.h>
#include <security/mac/mac_policy.h>
/*
* zone_label is the UMA zone from which most labels are allocated. Label
@ -125,3 +128,24 @@ mac_labelzone_free(struct label *label)
uma_zfree(zone_label, label);
}
/*
* Functions used by policy modules to get and set label values.
*/
intptr_t
mac_label_get(struct label *l, int slot)
{
KASSERT(l != NULL, ("mac_label_get: NULL label"));
return (l->l_perpolicy[slot]);
}
void
mac_label_set(struct label *l, int slot, intptr_t v)
{
KASSERT(l != NULL, ("mac_label_set: NULL label"));
l->l_perpolicy[slot] = v;
}

10
sys/security/mac/mac_policy.h
View File

@ -47,8 +47,6 @@
#error "no user-serviceable parts inside"
#endif
#include <sys/_label.h>
/*-
* Pluggable access control policy definition structure.
*
@ -970,11 +968,9 @@ int mac_policy_modevent(module_t mod, int type, void *data);
/*
* Policy interface to map a struct label pointer to per-policy data.
* Typically, policies wrap this in their own accessor macro that casts a
* void pointer to a policy-specific data type.
*
* XXXRW: It might be preferable to provide get/set methods via functions to
* avoid encoding the struct label layout in compiled modules.
* uintptr_t to a policy-specific data type.
*/
#define LABEL_TO_SLOT(l, s) (l)->l_perpolicy[s]
intptr_t mac_label_get(struct label *l, int slot);
void mac_label_set(struct label *l, int slot, intptr_t v);
#endif /* !_SYS_SECURITY_MAC_MAC_POLICY_H_ */

6
sys/security/mac_biba/mac_biba.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 1999-2002, 2007 Robert N. M. Watson
* Copyright (c) 2001-2005 McAfee, Inc.
* All rights reserved.
*
@ -132,8 +132,8 @@ SYSCTL_INT(_security_mac_biba, OID_AUTO, revocation_enabled, CTLFLAG_RW,
TUNABLE_INT("security.mac.biba.revocation_enabled", &revocation_enabled);
static int mac_biba_slot;
#define SLOT(l) ((struct mac_biba *)LABEL_TO_SLOT((l), mac_biba_slot).l_ptr)
#define SLOT_SET(l, val) (LABEL_TO_SLOT((l), mac_biba_slot).l_ptr = (val))
#define SLOT(l) ((struct mac_biba *)mac_label_get((l), mac_biba_slot))
#define SLOT_SET(l, val) mac_label_set((l), mac_biba_slot, (uintptr_t)(val))
static uma_zone_t zone_biba;

8
sys/security/mac_lomac/mac_lomac.c
View File

@ -126,11 +126,11 @@ SYSCTL_INT(_security_mac_lomac, OID_AUTO, revocation_enabled, CTLFLAG_RW,
TUNABLE_INT("security.mac.lomac.revocation_enabled", &revocation_enabled);
static int mac_lomac_slot;
#define SLOT(l) ((struct mac_lomac *)LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr)
#define SLOT_SET(l, val) (LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr = (val))
#define SLOT(l) ((struct mac_lomac *)mac_label_get((l), mac_lomac_slot))
#define SLOT_SET(l, val) mac_label_set((l), mac_lomac_slot, (uintptr_t)(val))
#define PSLOT(l) ((struct mac_lomac_proc *) \
LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr)
#define PSLOT_SET(l, val) (LABEL_TO_SLOT((l), mac_lomac_slot).l_ptr = (val))
mac_label_get((l), mac_lomac_slot))
#define PSLOT_SET(l, val) mac_label_set((l), mac_lomac_slot, (uintptr_t)(val))
MALLOC_DEFINE(M_MACLOMAC, "mac_lomac_label", "MAC/LOMAC labels");

4
sys/security/mac_mls/mac_mls.c
View File

@ -116,8 +116,8 @@ SYSCTL_INT(_security_mac_mls, OID_AUTO, max_compartments, CTLFLAG_RD,
&max_compartments, 0, "Maximum compartments the policy supports");
static int mac_mls_slot;
#define SLOT(l) ((struct mac_mls *)LABEL_TO_SLOT((l), mac_mls_slot).l_ptr)
#define SLOT_SET(l, val) (LABEL_TO_SLOT((l), mac_mls_slot).l_ptr = (val))
#define SLOT(l) ((struct mac_mls *)mac_label_get((l), mac_mls_slot))
#define SLOT_SET(l, val) mac_label_set((l), mac_mls_slot, (uintptr_t)(val))
static uma_zone_t zone_mls;

21
sys/security/mac_partition/mac_partition.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 1999-2002, 2007 Robert N. M. Watson
* Copyright (c) 2001-2002 Networks Associates Technology, Inc.
* All rights reserved.
*
@ -79,7 +79,8 @@ SYSCTL_INT(_security_mac_partition, OID_AUTO, enabled, CTLFLAG_RW,
&mac_partition_enabled, 0, "Enforce partition policy");
static int partition_slot;
#define SLOT(l) (LABEL_TO_SLOT((l), partition_slot).l_long)
#define SLOT(l) mac_label_get((l), partition_slot)
#define SLOT_SET(l, v) mac_label_set((l), partition_slot, (v))
static void
mac_partition_init(struct mac_policy_conf *conf)
@ -91,21 +92,21 @@ static void
mac_partition_init_label(struct label *label)
{
SLOT(label) = 0;
SLOT_SET(label, 0);
}
static void
mac_partition_destroy_label(struct label *label)
{
SLOT(label) = 0;
SLOT_SET(label, 0);
}
static void
mac_partition_copy_label(struct label *src, struct label *dest)
{
SLOT(dest) = SLOT(src);
SLOT_SET(dest, SLOT(src));
}
static int
@ -118,7 +119,7 @@ mac_partition_externalize_label(struct label *label, char *element_name,
(*claimed)++;
if (sbuf_printf(sb, "%ld", SLOT(label)) == -1)
if (sbuf_printf(sb, "%d", SLOT(label)) == -1)
return (EINVAL);
else
return (0);
@ -133,7 +134,7 @@ mac_partition_internalize_label(struct label *label, char *element_name,
return (0);
(*claimed)++;
SLOT(label) = strtol(element_data, NULL, 10);
SLOT_SET(label, strtol(element_data, NULL, 10));
return (0);
}
@ -141,14 +142,14 @@ static void
mac_partition_create_proc0(struct ucred *cred)
{
SLOT(cred->cr_label) = 0;
SLOT_SET(cred->cr_label, 0);
}
static void
mac_partition_create_proc1(struct ucred *cred)
{
SLOT(cred->cr_label) = 0;
SLOT_SET(cred->cr_label, 0);
}
static void
@ -156,7 +157,7 @@ mac_partition_relabel_cred(struct ucred *cred, struct label *newlabel)
{
if (SLOT(newlabel) != 0)
SLOT(cred->cr_label) = SLOT(newlabel);
SLOT_SET(cred->cr_label, SLOT(newlabel));
}
static int

81
sys/security/mac_test/mac_test.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 1999-2002, 2007 Robert N. M. Watson
* Copyright (c) 2001-2005 McAfee, Inc.
* All rights reserved.
*
@ -102,7 +102,8 @@ SYSCTL_INT(_security_mac_test, OID_AUTO, enabled, CTLFLAG_RW,
#define VNODEMAGIC 0x1a67a45c
#define EXMAGIC 0x849ba1fd
#define SLOT(x) LABEL_TO_SLOT((x), test_slot).l_long
#define SLOT(x) mac_label_get((x), test_slot)
#define SLOT_SET(x, v) mac_label_set((x), test_slot, (v))
#define ASSERT_BPF_LABEL(x) KASSERT(SLOT(x) == BPFMAGIC || \
SLOT(x) == 0, ("%s: Bad BPF label", __func__ ))
@ -305,7 +306,7 @@ static void
mac_test_init_bpfdesc_label(struct label *label)
{
SLOT(label) = BPFMAGIC;
SLOT_SET(label, BPFMAGIC);
atomic_add_int(&init_count_bpfdesc, 1);
}
@ -313,7 +314,7 @@ static void
mac_test_init_cred_label(struct label *label)
{
SLOT(label) = CREDMAGIC;
SLOT_SET(label, CREDMAGIC);
atomic_add_int(&init_count_cred, 1);
}
@ -321,7 +322,7 @@ static void
mac_test_init_devfsdirent_label(struct label *label)
{
SLOT(label) = DEVFSMAGIC;
SLOT_SET(label, DEVFSMAGIC);
atomic_add_int(&init_count_devfsdirent, 1);
}
@ -329,7 +330,7 @@ static void
mac_test_init_ifnet_label(struct label *label)
{
SLOT(label) = IFNETMAGIC;
SLOT_SET(label, IFNETMAGIC);
atomic_add_int(&init_count_ifnet, 1);
}
@ -342,7 +343,7 @@ mac_test_init_inpcb_label(struct label *label, int flag)
"mac_test_init_inpcb_label() at %s:%d", __FILE__,
__LINE__);
SLOT(label) = INPCBMAGIC;
SLOT_SET(label, INPCBMAGIC);
atomic_add_int(&init_count_inpcb, 1);
return (0);
}
@ -350,28 +351,28 @@ mac_test_init_inpcb_label(struct label *label, int flag)
static void
mac_test_init_sysv_msgmsg_label(struct label *label)
{
SLOT(label) = SYSVIPCMSGMAGIC;
SLOT_SET(label, SYSVIPCMSGMAGIC);
atomic_add_int(&init_count_sysv_msg, 1);
}
static void
mac_test_init_sysv_msgqueue_label(struct label *label)
{
SLOT(label) = SYSVIPCMSQMAGIC;
SLOT_SET(label, SYSVIPCMSQMAGIC);
atomic_add_int(&init_count_sysv_msq, 1);
}
static void
mac_test_init_sysv_sem_label(struct label *label)
{
SLOT(label) = SYSVIPCSEMMAGIC;
SLOT_SET(label, SYSVIPCSEMMAGIC);
atomic_add_int(&init_count_sysv_sem, 1);
}
static void
mac_test_init_sysv_shm_label(struct label *label)
{
SLOT(label) = SYSVIPCSHMMAGIC;
SLOT_SET(label, SYSVIPCSHMMAGIC);
atomic_add_int(&init_count_sysv_shm, 1);
}
@ -384,7 +385,7 @@ mac_test_init_ipq_label(struct label *label, int flag)
"mac_test_init_ipq_label() at %s:%d", __FILE__,
__LINE__);
SLOT(label) = IPQMAGIC;
SLOT_SET(label, IPQMAGIC);
atomic_add_int(&init_count_ipq, 1);
return (0);
}
@ -398,7 +399,7 @@ mac_test_init_mbuf_label(struct label *label, int flag)
"mac_test_init_mbuf_label() at %s:%d", __FILE__,
__LINE__);
SLOT(label) = MBUFMAGIC;
SLOT_SET(label, MBUFMAGIC);
atomic_add_int(&init_count_mbuf, 1);
return (0);
}
@ -407,7 +408,7 @@ static void
mac_test_init_mount_label(struct label *label)
{
SLOT(label) = MOUNTMAGIC;
SLOT_SET(label, MOUNTMAGIC);
atomic_add_int(&init_count_mount, 1);
}
@ -415,7 +416,7 @@ static void
mac_test_init_mount_fs_label(struct label *label)
{
SLOT(label) = MOUNTMAGIC;
SLOT_SET(label, MOUNTMAGIC);
atomic_add_int(&init_count_mount_fslabel, 1);
}
@ -428,7 +429,7 @@ mac_test_init_socket_label(struct label *label, int flag)
"mac_test_init_socket_label() at %s:%d", __FILE__,
__LINE__);
SLOT(label) = SOCKETMAGIC;
SLOT_SET(label, SOCKETMAGIC);
atomic_add_int(&init_count_socket, 1);
return (0);
}
@ -442,7 +443,7 @@ mac_test_init_socket_peer_label(struct label *label, int flag)
"mac_test_init_socket_peer_label() at %s:%d", __FILE__,
__LINE__);
SLOT(label) = SOCKETMAGIC;
SLOT_SET(label, SOCKETMAGIC);
atomic_add_int(&init_count_socket_peerlabel, 1);
return (0);
}
@ -451,7 +452,7 @@ static void
mac_test_init_pipe_label(struct label *label)
{
SLOT(label) = PIPEMAGIC;
SLOT_SET(label, PIPEMAGIC);
atomic_add_int(&init_count_pipe, 1);
}
@ -459,7 +460,7 @@ static void
mac_test_init_posix_sem_label(struct label *label)
{
SLOT(label) = POSIXSEMMAGIC;
SLOT_SET(label, POSIXSEMMAGIC);
atomic_add_int(&init_count_posixsems, 1);
}
@ -467,7 +468,7 @@ static void
mac_test_init_proc_label(struct label *label)
{
SLOT(label) = PROCMAGIC;
SLOT_SET(label, PROCMAGIC);
atomic_add_int(&init_count_proc, 1);
}
@ -475,7 +476,7 @@ static void
mac_test_init_vnode_label(struct label *label)
{
SLOT(label) = VNODEMAGIC;
SLOT_SET(label, VNODEMAGIC);
atomic_add_int(&init_count_vnode, 1);
}
@ -485,7 +486,7 @@ mac_test_destroy_bpfdesc_label(struct label *label)
if (SLOT(label) == BPFMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_bpfdesc, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_bpfdesc: dup destroy");
} else {
@ -499,7 +500,7 @@ mac_test_destroy_cred_label(struct label *label)
if (SLOT(label) == CREDMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_cred, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_cred: dup destroy");
} else {
@ -513,7 +514,7 @@ mac_test_destroy_devfsdirent_label(struct label *label)
if (SLOT(label) == DEVFSMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_devfsdirent, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_devfsdirent: dup destroy");
} else {
@ -527,7 +528,7 @@ mac_test_destroy_ifnet_label(struct label *label)
if (SLOT(label) == IFNETMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_ifnet, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_ifnet: dup destroy");
} else {
@ -541,7 +542,7 @@ mac_test_destroy_inpcb_label(struct label *label)
if (SLOT(label) == INPCBMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_inpcb, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_inpcb: dup destroy");
} else {
@ -555,7 +556,7 @@ mac_test_destroy_sysv_msgmsg_label(struct label *label)
if (SLOT(label) == SYSVIPCMSGMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_sysv_msg, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_sysv_msgmsg_label: dup destroy");
} else {
@ -570,7 +571,7 @@ mac_test_destroy_sysv_msgqueue_label(struct label *label)
if (SLOT(label) == SYSVIPCMSQMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_sysv_msq, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_sysv_msgqueue_label: dup destroy");
} else {
@ -585,7 +586,7 @@ mac_test_destroy_sysv_sem_label(struct label *label)
if (SLOT(label) == SYSVIPCSEMMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_sysv_sem, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_sysv_sem_label: dup destroy");
} else {
@ -599,7 +600,7 @@ mac_test_destroy_sysv_shm_label(struct label *label)
if (SLOT(label) == SYSVIPCSHMMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_sysv_shm, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_sysv_shm_label: dup destroy");
} else {
@ -613,7 +614,7 @@ mac_test_destroy_ipq_label(struct label *label)
if (SLOT(label) == IPQMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_ipq, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_ipq: dup destroy");
} else {
@ -635,7 +636,7 @@ mac_test_destroy_mbuf_label(struct label *label)
if (SLOT(label) == MBUFMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_mbuf, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_mbuf: dup destroy");
} else {
@ -649,7 +650,7 @@ mac_test_destroy_mount_label(struct label *label)
if ((SLOT(label) == MOUNTMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_mount, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_mount: dup destroy");
} else {
@ -663,7 +664,7 @@ mac_test_destroy_mount_fs_label(struct label *label)
if ((SLOT(label) == MOUNTMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_mount_fslabel, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_mount_fslabel: dup destroy");
} else {
@ -677,7 +678,7 @@ mac_test_destroy_socket_label(struct label *label)
if ((SLOT(label) == SOCKETMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_socket, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_socket: dup destroy");
} else {
@ -691,7 +692,7 @@ mac_test_destroy_socket_peer_label(struct label *label)
if ((SLOT(label) == SOCKETMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_socket_peerlabel, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_socket_peerlabel: dup destroy");
} else {
@ -705,7 +706,7 @@ mac_test_destroy_pipe_label(struct label *label)
if ((SLOT(label) == PIPEMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_pipe, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_pipe: dup destroy");
} else {
@ -719,7 +720,7 @@ mac_test_destroy_posix_sem_label(struct label *label)
if ((SLOT(label) == POSIXSEMMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_posixsems, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_posix_sem: dup destroy");
} else {
@ -733,7 +734,7 @@ mac_test_destroy_proc_label(struct label *label)
if ((SLOT(label) == PROCMAGIC || SLOT(label) == 0)) {
atomic_add_int(&destroy_count_proc, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_proc: dup destroy");
} else {
@ -747,7 +748,7 @@ mac_test_destroy_vnode_label(struct label *label)
if (SLOT(label) == VNODEMAGIC || SLOT(label) == 0) {
atomic_add_int(&destroy_count_vnode, 1);
SLOT(label) = EXMAGIC;
SLOT_SET(label, EXMAGIC);
} else if (SLOT(label) == EXMAGIC) {
DEBUGGER("mac_test_destroy_vnode: dup destroy");
} else {

65
sys/sys/_label.h
View File

@ -1,65 +0,0 @@
/*-
* Copyright (c) 1999-2002, 2006 Robert N. M. Watson
* Copyright (c) 2001-2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _SYS__LABEL_H_
#define _SYS__LABEL_H_
/*
* Definition for the 'struct label' in-kernel MAC label data structure.
* In general, struct label pointers are embedded in kernel data structures
* representing objects that may be labeled (and protected). It is not
* directly embedded in order to avoid encoding this definition into modules
* unnecessarily. Currently, only the MAC Framework and MAC policy modules
* dereference this data structure. In the future, we would like struct
* label to also be opaque to policies. Each policy requesting a label slot
* can store one long or void pointer in their slot.
*
* XXXMAC: This shouldn't be exported to userland, but is because of ucred.h
* and various other messes.
*/
#define MAC_MAX_SLOTS 4
#define MAC_FLAG_INITIALIZED 0x0000001 /* Is initialized for use. */
struct label {
int l_flags;
union {
void *l_ptr;
long l_long;
} l_perpolicy[MAC_MAX_SLOTS];
};
#endif /* !_SYS__LABEL_H_ */