[mirror_ubuntu-bionic-kernel.git] / include / net / netlabel.h

/*
 * NetLabel System
 *
 * The NetLabel system manages static and dynamic label mappings for network
 * protocols such as CIPSO and RIPSO.
 *
 * Author: Paul Moore <paul.moore@hp.com>
 *
 */

/*
 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
 *
 * This program is free software;  you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 * the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program;  if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#ifndef _NETLABEL_H
#define _NETLABEL_H

#include <linux/types.h>
#include <linux/net.h>
#include <linux/skbuff.h>
#include <net/netlink.h>
#include <asm/atomic.h>

/*
 * NetLabel - A management interface for maintaining network packet label
 *            mapping tables for explicit packet labling protocols.
 *
 * Network protocols such as CIPSO and RIPSO require a label translation layer
 * to convert the label on the packet into something meaningful on the host
 * machine.  In the current Linux implementation these mapping tables live
 * inside the kernel; NetLabel provides a mechanism for user space applications
 * to manage these mapping tables.
 *
 * NetLabel makes use of the Generic NETLINK mechanism as a transport layer to
 * send messages between kernel and user space.  The general format of a
 * NetLabel message is shown below:
 *
 *  +-----------------+-------------------+--------- --- -- -
 *  | struct nlmsghdr | struct genlmsghdr | payload
 *  +-----------------+-------------------+--------- --- -- -
 *
 * The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal.
 * The payload is dependent on the subsystem specified in the
 * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions
 * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c
 * file.  All of the fields in the NetLabel payload are NETLINK attributes, see
 * the include/net/netlink.h file for more information on NETLINK attributes.
 *
 */

/*
 * NetLabel NETLINK protocol
 */

#define NETLBL_PROTO_VERSION            1

/* NetLabel NETLINK types/families */
#define NETLBL_NLTYPE_NONE              0
#define NETLBL_NLTYPE_MGMT              1
#define NETLBL_NLTYPE_MGMT_NAME         "NLBL_MGMT"
#define NETLBL_NLTYPE_RIPSO             2
#define NETLBL_NLTYPE_RIPSO_NAME        "NLBL_RIPSO"
#define NETLBL_NLTYPE_CIPSOV4           3
#define NETLBL_NLTYPE_CIPSOV4_NAME      "NLBL_CIPSOv4"
#define NETLBL_NLTYPE_CIPSOV6           4
#define NETLBL_NLTYPE_CIPSOV6_NAME      "NLBL_CIPSOv6"
#define NETLBL_NLTYPE_UNLABELED         5
#define NETLBL_NLTYPE_UNLABELED_NAME    "NLBL_UNLBL"

/*
 * NetLabel - Kernel API for accessing the network packet label mappings.
 *
 * The following functions are provided for use by other kernel modules,
 * specifically kernel LSM modules, to provide a consistent, transparent API
 * for dealing with explicit packet labeling protocols such as CIPSO and
 * RIPSO.  The functions defined here are implemented in the
 * net/netlabel/netlabel_kapi.c file.
 *
 */

/* NetLabel audit information */
struct netlbl_audit {
	u32 secid;
	uid_t loginuid;
};

/* Domain mapping definition struct */
struct netlbl_dom_map;

/* Domain mapping operations */
int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info);

/* LSM security attributes */
struct netlbl_lsm_cache {
	atomic_t refcount;
	void (*free) (const void *data);
	void *data;
};
/* The catmap bitmap field MUST be a power of two in length and large
 * enough to hold at least 240 bits.  Special care (i.e. check the code!)
 * should be used when changing these values as the LSM implementation
 * probably has functions which rely on the sizes of these types to speed
 * processing. */
#define NETLBL_CATMAP_MAPTYPE           u64
#define NETLBL_CATMAP_MAPCNT            4
#define NETLBL_CATMAP_MAPSIZE           (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
#define NETLBL_CATMAP_SIZE              (NETLBL_CATMAP_MAPSIZE * \
					 NETLBL_CATMAP_MAPCNT)
#define NETLBL_CATMAP_BIT               (NETLBL_CATMAP_MAPTYPE)0x01
struct netlbl_lsm_secattr_catmap {
	u32 startbit;
	NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
	struct netlbl_lsm_secattr_catmap *next;
};
#define NETLBL_SECATTR_NONE             0x00000000
#define NETLBL_SECATTR_DOMAIN           0x00000001
#define NETLBL_SECATTR_CACHE            0x00000002
#define NETLBL_SECATTR_MLS_LVL          0x00000004
#define NETLBL_SECATTR_MLS_CAT          0x00000008
struct netlbl_lsm_secattr {
	u32 flags;

	char *domain;

	u32 mls_lvl;
	struct netlbl_lsm_secattr_catmap *mls_cat;

	struct netlbl_lsm_cache *cache;
};

/*
 * LSM security attribute operations (inline)
 */

/**
 * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
 * @flags: the memory allocation flags
 *
 * Description:
 * Allocate and initialize a netlbl_lsm_cache structure.  Returns a pointer
 * on success, NULL on failure.
 *
 */
static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
{
	struct netlbl_lsm_cache *cache;

	cache = kzalloc(sizeof(*cache), flags);
	if (cache)
		atomic_set(&cache->refcount, 1);
	return cache;
}

/**
 * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct
 * @cache: the struct to free
 *
 * Description:
 * Frees @secattr including all of the internal buffers.
 *
 */
static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
{
	if (!atomic_dec_and_test(&cache->refcount))
		return;

	if (cache->free)
		cache->free(cache->data);
	kfree(cache);
}

/**
 * netlbl_secattr_catmap_alloc - Allocate a LSM secattr catmap
 * @flags: memory allocation flags
 *
 * Description:
 * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL
 * on failure.
 *
 */
static inline struct netlbl_lsm_secattr_catmap *netlbl_secattr_catmap_alloc(
	                                                           gfp_t flags)
{
	return kzalloc(sizeof(struct netlbl_lsm_secattr_catmap), flags);
}

/**
 * netlbl_secattr_catmap_free - Free a LSM secattr catmap
 * @catmap: the category bitmap
 *
 * Description:
 * Free a LSM secattr catmap.
 *
 */
static inline void netlbl_secattr_catmap_free(
	                              struct netlbl_lsm_secattr_catmap *catmap)
{
	struct netlbl_lsm_secattr_catmap *iter;

	do {
		iter = catmap;
		catmap = catmap->next;
		kfree(iter);
	} while (catmap);
}

/**
 * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct
 * @secattr: the struct to initialize
 *
 * Description:
 * Initialize an already allocated netlbl_lsm_secattr struct.
 *
 */
static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
{
	secattr->flags = 0;
	secattr->domain = NULL;
	secattr->mls_cat = NULL;
	secattr->cache = NULL;
}

/**
 * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
 * @secattr: the struct to clear
 *
 * Description:
 * Destroys the @secattr struct, including freeing all of the internal buffers.
 * The struct must be reset with a call to netlbl_secattr_init() before reuse.
 *
 */
static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
{
	if (secattr->cache)
		netlbl_secattr_cache_free(secattr->cache);
	kfree(secattr->domain);
	if (secattr->mls_cat)
		netlbl_secattr_catmap_free(secattr->mls_cat);
}

/**
 * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct
 * @flags: the memory allocation flags
 *
 * Description:
 * Allocate and initialize a netlbl_lsm_secattr struct.  Returns a valid
 * pointer on success, or NULL on failure.
 *
 */
static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
{
	return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
}

/**
 * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
 * @secattr: the struct to free
 *
 * Description:
 * Frees @secattr including all of the internal buffers.
 *
 */
static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
{
	netlbl_secattr_destroy(secattr);
	kfree(secattr);
}

#ifdef CONFIG_NETLABEL
/*
 * LSM security attribute operations
 */
int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap,
			       u32 offset);
int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
				   u32 offset);
int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
				 u32 bit,
				 gfp_t flags);
int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
				 u32 start,
				 u32 end,
				 gfp_t flags);

/*
 * LSM protocol operations
 */
int netlbl_enabled(void);
int netlbl_sock_setattr(struct sock *sk,
			const struct netlbl_lsm_secattr *secattr);
int netlbl_sock_getattr(struct sock *sk,
			struct netlbl_lsm_secattr *secattr);
int netlbl_skbuff_getattr(const struct sk_buff *skb,
			  struct netlbl_lsm_secattr *secattr);
void netlbl_skbuff_err(struct sk_buff *skb, int error);

/*
 * LSM label mapping cache operations
 */
void netlbl_cache_invalidate(void);
int netlbl_cache_add(const struct sk_buff *skb,
		     const struct netlbl_lsm_secattr *secattr);
#else
static inline int netlbl_secattr_catmap_walk(
	                              struct netlbl_lsm_secattr_catmap *catmap,
				      u32 offset)
{
	return -ENOENT;
}
static inline int netlbl_secattr_catmap_walk_rng(
				      struct netlbl_lsm_secattr_catmap *catmap,
				      u32 offset)
{
	return -ENOENT;
}
static inline int netlbl_secattr_catmap_setbit(
	                              struct netlbl_lsm_secattr_catmap *catmap,
				      u32 bit,
				      gfp_t flags)
{
	return 0;
}
static inline int netlbl_secattr_catmap_setrng(
	                              struct netlbl_lsm_secattr_catmap *catmap,
				      u32 start,
				      u32 end,
				      gfp_t flags)
{
	return 0;
}
static inline int netlbl_enabled(void)
{
	return 0;
}
static inline int netlbl_sock_setattr(struct sock *sk,
				     const struct netlbl_lsm_secattr *secattr)
{
	return -ENOSYS;
}
static inline int netlbl_sock_getattr(struct sock *sk,
				      struct netlbl_lsm_secattr *secattr)
{
	return -ENOSYS;
}
static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
					struct netlbl_lsm_secattr *secattr)
{
	return -ENOSYS;
}
static inline void netlbl_skbuff_err(struct sk_buff *skb, int error)
{
	return;
}
static inline void netlbl_cache_invalidate(void)
{
	return;
}
static inline int netlbl_cache_add(const struct sk_buff *skb,
				   const struct netlbl_lsm_secattr *secattr)
{
	return 0;
}
#endif /* CONFIG_NETLABEL */

#endif /* _NETLABEL_H */
Commit	Line	Data
11a03f78 PM	1	/*
	2	* NetLabel System
	3	*
	4	* The NetLabel system manages static and dynamic label mappings for network
	5	* protocols such as CIPSO and RIPSO.
	6	*
	7	* Author: Paul Moore <paul.moore@hp.com>
	8	*
	9	*/
	10
	11	/*
	12	* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License as published by
	16	* the Free Software Foundation; either version 2 of the License, or
	17	* (at your option) any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	22	* the GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	27	*
	28	*/
	29
	30	#ifndef _NETLABEL_H
	31	#define _NETLABEL_H
	32
	33	#include <linux/types.h>
7a0e1d60	34	#include <linux/net.h>
11a03f78 PM	35	#include <linux/skbuff.h>
11a03f78 PM	36	#include <net/netlink.h>
ffb733c6	37	#include <asm/atomic.h>
11a03f78 PM	38
	39	/*
	40	* NetLabel - A management interface for maintaining network packet label
	41	* mapping tables for explicit packet labling protocols.
	42	*
	43	* Network protocols such as CIPSO and RIPSO require a label translation layer
	44	* to convert the label on the packet into something meaningful on the host
	45	* machine. In the current Linux implementation these mapping tables live
	46	* inside the kernel; NetLabel provides a mechanism for user space applications
	47	* to manage these mapping tables.
	48	*
	49	* NetLabel makes use of the Generic NETLINK mechanism as a transport layer to
	50	* send messages between kernel and user space. The general format of a
	51	* NetLabel message is shown below:
	52	*
	53	* +-----------------+-------------------+--------- --- -- -
	54	* \| struct nlmsghdr \| struct genlmsghdr \| payload
	55	* +-----------------+-------------------+--------- --- -- -
	56	*
	57	* The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal.
	58	* The payload is dependent on the subsystem specified in the
	59	* 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions
	60	* should be defined in the corresponding net/netlabel/netlabel_<subsys>.h\|c
fcd48280 PM	61	* file. All of the fields in the NetLabel payload are NETLINK attributes, see
fcd48280 PM	62	* the include/net/netlink.h file for more information on NETLINK attributes.
11a03f78 PM	63	*
	64	*/
	65
	66	/*
	67	* NetLabel NETLINK protocol
	68	*/
	69
	70	#define NETLBL_PROTO_VERSION 1
	71
	72	/* NetLabel NETLINK types/families */
	73	#define NETLBL_NLTYPE_NONE 0
	74	#define NETLBL_NLTYPE_MGMT 1
	75	#define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT"
	76	#define NETLBL_NLTYPE_RIPSO 2
	77	#define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO"
	78	#define NETLBL_NLTYPE_CIPSOV4 3
	79	#define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4"
	80	#define NETLBL_NLTYPE_CIPSOV6 4
	81	#define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6"
	82	#define NETLBL_NLTYPE_UNLABELED 5
	83	#define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL"
	84
11a03f78 PM	85	/*
	86	* NetLabel - Kernel API for accessing the network packet label mappings.
	87	*
	88	* The following functions are provided for use by other kernel modules,
	89	* specifically kernel LSM modules, to provide a consistent, transparent API
	90	* for dealing with explicit packet labeling protocols such as CIPSO and
	91	* RIPSO. The functions defined here are implemented in the
	92	* net/netlabel/netlabel_kapi.c file.
	93	*
	94	*/
	95
95d4e6be PM	96	/* NetLabel audit information */
	97	struct netlbl_audit {
	98	u32 secid;
	99	uid_t loginuid;
	100	};
	101
11a03f78 PM	102	/* Domain mapping definition struct */
	103	struct netlbl_dom_map;
	104
	105	/* Domain mapping operations */
95d4e6be	106	int netlbl_domhsh_remove(const char domain, struct netlbl_audit audit_info);
11a03f78 PM	107
	108	/* LSM security attributes */
	109	struct netlbl_lsm_cache {
ffb733c6	110	atomic_t refcount;
11a03f78 PM	111	void (free) (const void data);
	112	void *data;
	113	};
02752760 PM	114	/* The catmap bitmap field MUST be a power of two in length and large
	115	* enough to hold at least 240 bits. Special care (i.e. check the code!)
	116	* should be used when changing these values as the LSM implementation
	117	* probably has functions which rely on the sizes of these types to speed
	118	* processing. */
	119	#define NETLBL_CATMAP_MAPTYPE u64
	120	#define NETLBL_CATMAP_MAPCNT 4
	121	#define NETLBL_CATMAP_MAPSIZE (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
	122	#define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \
	123	NETLBL_CATMAP_MAPCNT)
	124	#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01
	125	struct netlbl_lsm_secattr_catmap {
	126	u32 startbit;
	127	NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
	128	struct netlbl_lsm_secattr_catmap *next;
	129	};
701a90ba PM	130	#define NETLBL_SECATTR_NONE 0x00000000
	131	#define NETLBL_SECATTR_DOMAIN 0x00000001
	132	#define NETLBL_SECATTR_CACHE 0x00000002
	133	#define NETLBL_SECATTR_MLS_LVL 0x00000004
	134	#define NETLBL_SECATTR_MLS_CAT 0x00000008
11a03f78	135	struct netlbl_lsm_secattr {
701a90ba PM	136	u32 flags;
701a90ba PM	137
11a03f78 PM	138	char *domain;
	139
	140	u32 mls_lvl;
02752760	141	struct netlbl_lsm_secattr_catmap *mls_cat;
11a03f78	142
ffb733c6	143	struct netlbl_lsm_cache *cache;
11a03f78 PM	144	};
	145
	146	/*
23bcdc1a	147	* LSM security attribute operations (inline)
11a03f78 PM	148	*/
11a03f78 PM	149
ffb733c6	150	/**
	151	* netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
	152	* @flags: the memory allocation flags
	153	*
	154	* Description:
	155	* Allocate and initialize a netlbl_lsm_cache structure. Returns a pointer
	156	* on success, NULL on failure.
	157	*
	158	*/
645408d1	159	static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
ffb733c6	160	{
	161	struct netlbl_lsm_cache *cache;
	162
	163	cache = kzalloc(sizeof(*cache), flags);
	164	if (cache)
	165	atomic_set(&cache->refcount, 1);
	166	return cache;
	167	}
	168
	169	/**
	170	* netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct
	171	* @cache: the struct to free
	172	*
	173	* Description:
	174	* Frees @secattr including all of the internal buffers.
	175	*
	176	*/
	177	static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
	178	{
	179	if (!atomic_dec_and_test(&cache->refcount))
	180	return;
	181
	182	if (cache->free)
	183	cache->free(cache->data);
	184	kfree(cache);
	185	}
	186
02752760 PM	187	/**
	188	* netlbl_secattr_catmap_alloc - Allocate a LSM secattr catmap
	189	* @flags: memory allocation flags
	190	*
	191	* Description:
	192	* Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL
	193	* on failure.
	194	*
	195	*/
	196	static inline struct netlbl_lsm_secattr_catmap *netlbl_secattr_catmap_alloc(
	197	gfp_t flags)
	198	{
	199	return kzalloc(sizeof(struct netlbl_lsm_secattr_catmap), flags);
	200	}
	201
	202	/**
	203	* netlbl_secattr_catmap_free - Free a LSM secattr catmap
	204	* @catmap: the category bitmap
	205	*
	206	* Description:
	207	* Free a LSM secattr catmap.
	208	*
	209	*/
	210	static inline void netlbl_secattr_catmap_free(
	211	struct netlbl_lsm_secattr_catmap *catmap)
	212	{
	213	struct netlbl_lsm_secattr_catmap *iter;
	214
	215	do {
	216	iter = catmap;
	217	catmap = catmap->next;
	218	kfree(iter);
	219	} while (catmap);
	220	}
	221
11a03f78 PM	222	/**
	223	* netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct
	224	* @secattr: the struct to initialize
	225	*
	226	* Description:
c6fa82a9	227	* Initialize an already allocated netlbl_lsm_secattr struct.
11a03f78 PM	228	*
11a03f78 PM	229	*/
c6fa82a9	230	static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
11a03f78	231	{
701a90ba PM	232	secattr->flags = 0;
	233	secattr->domain = NULL;
	234	secattr->mls_cat = NULL;
	235	secattr->cache = NULL;
11a03f78 PM	236	}
	237
	238	/**
	239	* netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
	240	* @secattr: the struct to clear
11a03f78 PM	241	*
	242	* Description:
	243	* Destroys the @secattr struct, including freeing all of the internal buffers.
ffb733c6	244	* The struct must be reset with a call to netlbl_secattr_init() before reuse.
11a03f78 PM	245	*
11a03f78 PM	246	*/
ffb733c6	247	static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
11a03f78	248	{
ffb733c6	249	if (secattr->cache)
ffb733c6	250	netlbl_secattr_cache_free(secattr->cache);
11a03f78	251	kfree(secattr->domain);
02752760 PM	252	if (secattr->mls_cat)
02752760 PM	253	netlbl_secattr_catmap_free(secattr->mls_cat);
11a03f78 PM	254	}
	255
	256	/**
	257	* netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct
	258	* @flags: the memory allocation flags
	259	*
	260	* Description:
	261	* Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid
	262	* pointer on success, or NULL on failure.
	263	*
	264	*/
1f758d93	265	static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
11a03f78 PM	266	{
	267	return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
	268	}
	269
	270	/**
	271	* netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
	272	* @secattr: the struct to free
11a03f78 PM	273	*
11a03f78 PM	274	* Description:
ffb733c6	275	* Frees @secattr including all of the internal buffers.
11a03f78 PM	276	*
11a03f78 PM	277	*/
ffb733c6	278	static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
11a03f78	279	{
ffb733c6	280	netlbl_secattr_destroy(secattr);
11a03f78 PM	281	kfree(secattr);
	282	}
	283
02752760	284	#ifdef CONFIG_NETLABEL
23bcdc1a PM	285	/*
	286	* LSM security attribute operations
	287	*/
02752760 PM	288	int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap,
	289	u32 offset);
	290	int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
	291	u32 offset);
	292	int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
	293	u32 bit,
	294	gfp_t flags);
	295	int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
	296	u32 start,
	297	u32 end,
	298	gfp_t flags);
23bcdc1a PM	299
	300	/*
	301	* LSM protocol operations
	302	*/
	303	int netlbl_enabled(void);
	304	int netlbl_sock_setattr(struct sock *sk,
	305	const struct netlbl_lsm_secattr *secattr);
	306	int netlbl_sock_getattr(struct sock *sk,
	307	struct netlbl_lsm_secattr *secattr);
	308	int netlbl_skbuff_getattr(const struct sk_buff *skb,
	309	struct netlbl_lsm_secattr *secattr);
	310	void netlbl_skbuff_err(struct sk_buff *skb, int error);
	311
	312	/*
	313	* LSM label mapping cache operations
	314	*/
	315	void netlbl_cache_invalidate(void);
	316	int netlbl_cache_add(const struct sk_buff *skb,
	317	const struct netlbl_lsm_secattr *secattr);
02752760 PM	318	#else
	319	static inline int netlbl_secattr_catmap_walk(
	320	struct netlbl_lsm_secattr_catmap *catmap,
	321	u32 offset)
	322	{
	323	return -ENOENT;
	324	}
02752760 PM	325	static inline int netlbl_secattr_catmap_walk_rng(
	326	struct netlbl_lsm_secattr_catmap *catmap,
	327	u32 offset)
	328	{
	329	return -ENOENT;
	330	}
02752760 PM	331	static inline int netlbl_secattr_catmap_setbit(
	332	struct netlbl_lsm_secattr_catmap *catmap,
	333	u32 bit,
	334	gfp_t flags)
	335	{
	336	return 0;
	337	}
02752760 PM	338	static inline int netlbl_secattr_catmap_setrng(
	339	struct netlbl_lsm_secattr_catmap *catmap,
	340	u32 start,
	341	u32 end,
	342	gfp_t flags)
	343	{
	344	return 0;
	345	}
23bcdc1a PM	346	static inline int netlbl_enabled(void)
	347	{
	348	return 0;
	349	}
ba6ff9f2	350	static inline int netlbl_sock_setattr(struct sock *sk,
11a03f78 PM	351	const struct netlbl_lsm_secattr *secattr)
	352	{
	353	return -ENOSYS;
	354	}
14a72f53 PM	355	static inline int netlbl_sock_getattr(struct sock *sk,
	356	struct netlbl_lsm_secattr *secattr)
	357	{
	358	return -ENOSYS;
	359	}
11a03f78 PM	360	static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
	361	struct netlbl_lsm_secattr *secattr)
	362	{
	363	return -ENOSYS;
	364	}
11a03f78 PM	365	static inline void netlbl_skbuff_err(struct sk_buff *skb, int error)
	366	{
	367	return;
	368	}
11a03f78 PM	369	static inline void netlbl_cache_invalidate(void)
	370	{
	371	return;
	372	}
11a03f78 PM	373	static inline int netlbl_cache_add(const struct sk_buff *skb,
	374	const struct netlbl_lsm_secattr *secattr)
	375	{
	376	return 0;
	377	}
	378	#endif /* CONFIG_NETLABEL */
	379
	380	#endif /* _NETLABEL_H */