[linux-2.6-block.git] / security / integrity / integrity.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2009-2010 IBM Corporation
 *
 * Authors:
 * Mimi Zohar <zohar@us.ibm.com>
 */

#ifdef pr_fmt
#undef pr_fmt
#endif

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/types.h>
#include <linux/integrity.h>
#include <crypto/sha1.h>
#include <crypto/hash.h>
#include <linux/key.h>
#include <linux/audit.h>

/* iint action cache flags */
#define IMA_MEASURE		0x00000001
#define IMA_MEASURED		0x00000002
#define IMA_APPRAISE		0x00000004
#define IMA_APPRAISED		0x00000008
/*#define IMA_COLLECT		0x00000010  do not use this flag */
#define IMA_COLLECTED		0x00000020
#define IMA_AUDIT		0x00000040
#define IMA_AUDITED		0x00000080
#define IMA_HASH		0x00000100
#define IMA_HASHED		0x00000200

/* iint policy rule cache flags */
#define IMA_NONACTION_FLAGS	0xff000000
#define IMA_DIGSIG_REQUIRED	0x01000000
#define IMA_PERMIT_DIRECTIO	0x02000000
#define IMA_NEW_FILE		0x04000000
#define EVM_IMMUTABLE_DIGSIG	0x08000000
#define IMA_FAIL_UNVERIFIABLE_SIGS	0x10000000
#define IMA_MODSIG_ALLOWED	0x20000000
#define IMA_CHECK_BLACKLIST	0x40000000
#define IMA_VERITY_REQUIRED	0x80000000

#define IMA_DO_MASK		(IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \
				 IMA_HASH | IMA_APPRAISE_SUBMASK)
#define IMA_DONE_MASK		(IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \
				 IMA_HASHED | IMA_COLLECTED | \
				 IMA_APPRAISED_SUBMASK)

/* iint subaction appraise cache flags */
#define IMA_FILE_APPRAISE	0x00001000
#define IMA_FILE_APPRAISED	0x00002000
#define IMA_MMAP_APPRAISE	0x00004000
#define IMA_MMAP_APPRAISED	0x00008000
#define IMA_BPRM_APPRAISE	0x00010000
#define IMA_BPRM_APPRAISED	0x00020000
#define IMA_READ_APPRAISE	0x00040000
#define IMA_READ_APPRAISED	0x00080000
#define IMA_CREDS_APPRAISE	0x00100000
#define IMA_CREDS_APPRAISED	0x00200000
#define IMA_APPRAISE_SUBMASK	(IMA_FILE_APPRAISE | IMA_MMAP_APPRAISE | \
				 IMA_BPRM_APPRAISE | IMA_READ_APPRAISE | \
				 IMA_CREDS_APPRAISE)
#define IMA_APPRAISED_SUBMASK	(IMA_FILE_APPRAISED | IMA_MMAP_APPRAISED | \
				 IMA_BPRM_APPRAISED | IMA_READ_APPRAISED | \
				 IMA_CREDS_APPRAISED)

/* iint cache atomic_flags */
#define IMA_CHANGE_XATTR	0
#define IMA_UPDATE_XATTR	1
#define IMA_CHANGE_ATTR		2
#define IMA_DIGSIG		3
#define IMA_MUST_MEASURE	4

enum evm_ima_xattr_type {
	IMA_XATTR_DIGEST = 0x01,
	EVM_XATTR_HMAC,
	EVM_IMA_XATTR_DIGSIG,
	IMA_XATTR_DIGEST_NG,
	EVM_XATTR_PORTABLE_DIGSIG,
	IMA_VERITY_DIGSIG,
	IMA_XATTR_LAST
};

struct evm_ima_xattr_data {
	u8 type;
	u8 data[];
} __packed;

/* Only used in the EVM HMAC code. */
struct evm_xattr {
	struct evm_ima_xattr_data data;
	u8 digest[SHA1_DIGEST_SIZE];
} __packed;

#define IMA_MAX_DIGEST_SIZE	HASH_MAX_DIGESTSIZE

struct ima_digest_data {
	u8 algo;
	u8 length;
	union {
		struct {
			u8 unused;
			u8 type;
		} sha1;
		struct {
			u8 type;
			u8 algo;
		} ng;
		u8 data[2];
	} xattr;
	u8 digest[];
} __packed;

/*
 * Instead of wrapping the ima_digest_data struct inside a local structure
 * with the maximum hash size, define ima_max_digest_data struct.
 */
struct ima_max_digest_data {
	struct ima_digest_data hdr;
	u8 digest[HASH_MAX_DIGESTSIZE];
} __packed;

/*
 * signature header format v2 - for using with asymmetric keys
 *
 * The signature_v2_hdr struct includes a signature format version
 * to simplify defining new signature formats.
 *
 * signature format:
 * version 2: regular file data hash based signature
 * version 3: struct ima_file_id data based signature
 */
struct signature_v2_hdr {
	uint8_t type;		/* xattr type */
	uint8_t version;	/* signature format version */
	uint8_t	hash_algo;	/* Digest algorithm [enum hash_algo] */
	__be32 keyid;		/* IMA key identifier - not X509/PGP specific */
	__be16 sig_size;	/* signature size */
	uint8_t sig[];		/* signature payload */
} __packed;

/*
 * IMA signature version 3 disambiguates the data that is signed, by
 * indirectly signing the hash of the ima_file_id structure data,
 * containing either the fsverity_descriptor struct digest or, in the
 * future, the regular IMA file hash.
 *
 * (The hash of the ima_file_id structure is only of the portion used.)
 */
struct ima_file_id {
	__u8 hash_type;		/* xattr type [enum evm_ima_xattr_type] */
	__u8 hash_algorithm;	/* Digest algorithm [enum hash_algo] */
	__u8 hash[HASH_MAX_DIGESTSIZE];
} __packed;

/* integrity data associated with an inode */
struct integrity_iint_cache {
	struct rb_node rb_node;	/* rooted in integrity_iint_tree */
	struct mutex mutex;	/* protects: version, flags, digest */
	struct inode *inode;	/* back pointer to inode in question */
	u64 version;		/* track inode changes */
	unsigned long flags;
	unsigned long measured_pcrs;
	unsigned long atomic_flags;
	unsigned long real_ino;
	dev_t real_dev;
	enum integrity_status ima_file_status:4;
	enum integrity_status ima_mmap_status:4;
	enum integrity_status ima_bprm_status:4;
	enum integrity_status ima_read_status:4;
	enum integrity_status ima_creds_status:4;
	enum integrity_status evm_status:4;
	struct ima_digest_data *ima_hash;
};

/* rbtree tree calls to lookup, insert, delete
 * integrity data associated with an inode.
 */
struct integrity_iint_cache *integrity_iint_find(struct inode *inode);

int integrity_kernel_read(struct file *file, loff_t offset,
			  void *addr, unsigned long count);

#define INTEGRITY_KEYRING_EVM		0
#define INTEGRITY_KEYRING_IMA		1
#define INTEGRITY_KEYRING_PLATFORM	2
#define INTEGRITY_KEYRING_MACHINE	3
#define INTEGRITY_KEYRING_MAX		4

extern struct dentry *integrity_dir;

struct modsig;

#ifdef CONFIG_INTEGRITY_SIGNATURE

int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
			    const char *digest, int digestlen);
int integrity_modsig_verify(unsigned int id, const struct modsig *modsig);

int __init integrity_init_keyring(const unsigned int id);
int __init integrity_load_x509(const unsigned int id, const char *path);
int __init integrity_load_cert(const unsigned int id, const char *source,
			       const void *data, size_t len, key_perm_t perm);
#else

static inline int integrity_digsig_verify(const unsigned int id,
					  const char *sig, int siglen,
					  const char *digest, int digestlen)
{
	return -EOPNOTSUPP;
}

static inline int integrity_modsig_verify(unsigned int id,
					  const struct modsig *modsig)
{
	return -EOPNOTSUPP;
}

static inline int integrity_init_keyring(const unsigned int id)
{
	return 0;
}

static inline int __init integrity_load_cert(const unsigned int id,
					     const char *source,
					     const void *data, size_t len,
					     key_perm_t perm)
{
	return 0;
}
#endif /* CONFIG_INTEGRITY_SIGNATURE */

#ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS
int asymmetric_verify(struct key *keyring, const char *sig,
		      int siglen, const char *data, int datalen);
#else
static inline int asymmetric_verify(struct key *keyring, const char *sig,
				    int siglen, const char *data, int datalen)
{
	return -EOPNOTSUPP;
}
#endif

#ifdef CONFIG_IMA_APPRAISE_MODSIG
int ima_modsig_verify(struct key *keyring, const struct modsig *modsig);
#else
static inline int ima_modsig_verify(struct key *keyring,
				    const struct modsig *modsig)
{
	return -EOPNOTSUPP;
}
#endif

#ifdef CONFIG_IMA_LOAD_X509
void __init ima_load_x509(void);
#else
static inline void ima_load_x509(void)
{
}
#endif

#ifdef CONFIG_EVM_LOAD_X509
void __init evm_load_x509(void);
#else
static inline void evm_load_x509(void)
{
}
#endif

#ifdef CONFIG_INTEGRITY_AUDIT
/* declarations */
void integrity_audit_msg(int audit_msgno, struct inode *inode,
			 const unsigned char *fname, const char *op,
			 const char *cause, int result, int info);

void integrity_audit_message(int audit_msgno, struct inode *inode,
			     const unsigned char *fname, const char *op,
			     const char *cause, int result, int info,
			     int errno);

static inline struct audit_buffer *
integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type)
{
	return audit_log_start(ctx, gfp_mask, type);
}

#else
static inline void integrity_audit_msg(int audit_msgno, struct inode *inode,
				       const unsigned char *fname,
				       const char *op, const char *cause,
				       int result, int info)
{
}

static inline void integrity_audit_message(int audit_msgno,
					   struct inode *inode,
					   const unsigned char *fname,
					   const char *op, const char *cause,
					   int result, int info, int errno)
{
}

static inline struct audit_buffer *
integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type)
{
	return NULL;
}

#endif

#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
void __init add_to_platform_keyring(const char *source, const void *data,
				    size_t len);
#else
static inline void __init add_to_platform_keyring(const char *source,
						  const void *data, size_t len)
{
}
#endif

#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
void __init add_to_machine_keyring(const char *source, const void *data, size_t len);
bool __init imputed_trust_enabled(void);
#else
static inline void __init add_to_machine_keyring(const char *source,
						  const void *data, size_t len)
{
}

static inline bool __init imputed_trust_enabled(void)
{
	return false;
}
#endif
Commit	Line	Data
b886d83c	1	/* SPDX-License-Identifier: GPL-2.0-only */
f381c272 MZ	2	/*
	3	* Copyright (C) 2009-2010 IBM Corporation
	4	*
	5	* Authors:
	6	* Mimi Zohar <zohar@us.ibm.com>
f381c272 MZ	7	*/
f381c272 MZ	8
555d6d71 TS	9	#ifdef pr_fmt
	10	#undef pr_fmt
	11	#endif
	12
	13	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	14
f381c272 MZ	15	#include <linux/types.h>
f381c272 MZ	16	#include <linux/integrity.h>
a24d22b2	17	#include <crypto/sha1.h>
8c54135e	18	#include <crypto/hash.h>
e0751257	19	#include <linux/key.h>
2afd020a	20	#include <linux/audit.h>
f381c272	21
45e2472e	22	/* iint action cache flags */
f578c08e MZ	23	#define IMA_MEASURE 0x00000001
	24	#define IMA_MEASURED 0x00000002
	25	#define IMA_APPRAISE 0x00000004
	26	#define IMA_APPRAISED 0x00000008
	27	/#define IMA_COLLECT 0x00000010 do not use this flag /
	28	#define IMA_COLLECTED 0x00000020
	29	#define IMA_AUDIT 0x00000040
	30	#define IMA_AUDITED 0x00000080
da1b0029 MZ	31	#define IMA_HASH 0x00000100
da1b0029 MZ	32	#define IMA_HASHED 0x00000200
45e2472e	33
aae6ccbd MZ	34	/* iint policy rule cache flags */
aae6ccbd MZ	35	#define IMA_NONACTION_FLAGS 0xff000000
0d73a552 DK	36	#define IMA_DIGSIG_REQUIRED 0x01000000
	37	#define IMA_PERMIT_DIRECTIO 0x02000000
	38	#define IMA_NEW_FILE 0x04000000
	39	#define EVM_IMMUTABLE_DIGSIG 0x08000000
9e67028e	40	#define IMA_FAIL_UNVERIFIABLE_SIGS 0x10000000
9044d627	41	#define IMA_MODSIG_ALLOWED 0x20000000
273df864	42	#define IMA_CHECK_BLACKLIST 0x40000000
54f03916	43	#define IMA_VERITY_REQUIRED 0x80000000
45e2472e	44
d79d72e0	45	#define IMA_DO_MASK (IMA_MEASURE \| IMA_APPRAISE \| IMA_AUDIT \| \
da1b0029	46	IMA_HASH \| IMA_APPRAISE_SUBMASK)
d79d72e0	47	#define IMA_DONE_MASK (IMA_MEASURED \| IMA_APPRAISED \| IMA_AUDITED \| \
da1b0029 MZ	48	IMA_HASHED \| IMA_COLLECTED \| \
da1b0029 MZ	49	IMA_APPRAISED_SUBMASK)
d79d72e0 MZ	50
d79d72e0 MZ	51	/* iint subaction appraise cache flags */
da1b0029 MZ	52	#define IMA_FILE_APPRAISE 0x00001000
	53	#define IMA_FILE_APPRAISED 0x00002000
	54	#define IMA_MMAP_APPRAISE 0x00004000
	55	#define IMA_MMAP_APPRAISED 0x00008000
	56	#define IMA_BPRM_APPRAISE 0x00010000
	57	#define IMA_BPRM_APPRAISED 0x00020000
	58	#define IMA_READ_APPRAISE 0x00040000
	59	#define IMA_READ_APPRAISED 0x00080000
d906c10d MG	60	#define IMA_CREDS_APPRAISE 0x00100000
d906c10d MG	61	#define IMA_CREDS_APPRAISED 0x00200000
d79d72e0	62	#define IMA_APPRAISE_SUBMASK (IMA_FILE_APPRAISE \| IMA_MMAP_APPRAISE \| \
d906c10d MG	63	IMA_BPRM_APPRAISE \| IMA_READ_APPRAISE \| \
d906c10d MG	64	IMA_CREDS_APPRAISE)
d79d72e0	65	#define IMA_APPRAISED_SUBMASK (IMA_FILE_APPRAISED \| IMA_MMAP_APPRAISED \| \
d906c10d MG	66	IMA_BPRM_APPRAISED \| IMA_READ_APPRAISED \| \
d906c10d MG	67	IMA_CREDS_APPRAISED)
f381c272	68
0d73a552 DK	69	/* iint cache atomic_flags */
	70	#define IMA_CHANGE_XATTR 0
	71	#define IMA_UPDATE_XATTR 1
	72	#define IMA_CHANGE_ATTR 2
	73	#define IMA_DIGSIG 3
	74	#define IMA_MUST_MEASURE 4
	75
6be5cc52 DK	76	enum evm_ima_xattr_type {
	77	IMA_XATTR_DIGEST = 0x01,
	78	EVM_XATTR_HMAC,
	79	EVM_IMA_XATTR_DIGSIG,
3ea7a560	80	IMA_XATTR_DIGEST_NG,
50b97748	81	EVM_XATTR_PORTABLE_DIGSIG,
398c42e2	82	IMA_VERITY_DIGSIG,
a48fda9d	83	IMA_XATTR_LAST
6be5cc52 DK	84	};
	85
	86	struct evm_ima_xattr_data {
	87	u8 type;
650b29db TJB	88	u8 data[];
	89	} __packed;
	90
	91	/* Only used in the EVM HMAC code. */
	92	struct evm_xattr {
	93	struct evm_ima_xattr_data data;
6be5cc52	94	u8 digest[SHA1_DIGEST_SIZE];
c7c8bb23 DK	95	} __packed;
c7c8bb23 DK	96
398c42e2	97	#define IMA_MAX_DIGEST_SIZE HASH_MAX_DIGESTSIZE
c7c8bb23 DK	98
	99	struct ima_digest_data {
	100	u8 algo;
	101	u8 length;
3ea7a560 DK	102	union {
	103	struct {
	104	u8 unused;
	105	u8 type;
	106	} sha1;
	107	struct {
	108	u8 type;
	109	u8 algo;
	110	} ng;
	111	u8 data[2];
	112	} xattr;
eb492c62	113	u8 digest[];
c7c8bb23	114	} __packed;
6be5cc52	115
8c54135e MZ	116	/*
	117	* Instead of wrapping the ima_digest_data struct inside a local structure
	118	* with the maximum hash size, define ima_max_digest_data struct.
	119	*/
	120	struct ima_max_digest_data {
	121	struct ima_digest_data hdr;
	122	u8 digest[HASH_MAX_DIGESTSIZE];
	123	} __packed;
	124
d3634d0f	125	/*
398c42e2 MZ	126	* signature header format v2 - for using with asymmetric keys
	127	*
	128	* The signature_v2_hdr struct includes a signature format version
	129	* to simplify defining new signature formats.
	130	*
	131	* signature format:
	132	* version 2: regular file data hash based signature
	133	* version 3: struct ima_file_id data based signature
d3634d0f DK	134	*/
d3634d0f DK	135	struct signature_v2_hdr {
b1aaab22	136	uint8_t type; /* xattr type */
d3634d0f	137	uint8_t version; /* signature format version */
4e8ae72a	138	uint8_t hash_algo; /* Digest algorithm [enum hash_algo] */
bb543e39 TJB	139	__be32 keyid; /* IMA key identifier - not X509/PGP specific */
bb543e39 TJB	140	__be16 sig_size; /* signature size */
eb492c62	141	uint8_t sig[]; /* signature payload */
d3634d0f DK	142	} __packed;
d3634d0f DK	143
398c42e2 MZ	144	/*
	145	* IMA signature version 3 disambiguates the data that is signed, by
	146	* indirectly signing the hash of the ima_file_id structure data,
	147	* containing either the fsverity_descriptor struct digest or, in the
	148	* future, the regular IMA file hash.
	149	*
	150	* (The hash of the ima_file_id structure is only of the portion used.)
	151	*/
	152	struct ima_file_id {
	153	__u8 hash_type; /* xattr type [enum evm_ima_xattr_type] */
	154	__u8 hash_algorithm; /* Digest algorithm [enum hash_algo] */
	155	__u8 hash[HASH_MAX_DIGESTSIZE];
	156	} __packed;
	157
f381c272 MZ	158	/* integrity data associated with an inode */
f381c272 MZ	159	struct integrity_iint_cache {
c7c8bb23	160	struct rb_node rb_node; /* rooted in integrity_iint_tree */
0d73a552	161	struct mutex mutex; /* protects: version, flags, digest */
f381c272 MZ	162	struct inode inode; / back pointer to inode in question */
f381c272 MZ	163	u64 version; /* track inode changes */
f578c08e	164	unsigned long flags;
96d450bb	165	unsigned long measured_pcrs;
0d73a552	166	unsigned long atomic_flags;
b836c4d2 MZ	167	unsigned long real_ino;
b836c4d2 MZ	168	dev_t real_dev;
d79d72e0 MZ	169	enum integrity_status ima_file_status:4;
	170	enum integrity_status ima_mmap_status:4;
	171	enum integrity_status ima_bprm_status:4;
cf222217	172	enum integrity_status ima_read_status:4;
d906c10d	173	enum integrity_status ima_creds_status:4;
ee866331	174	enum integrity_status evm_status:4;
a35c3fb6	175	struct ima_digest_data *ima_hash;
f381c272 MZ	176	};
	177
	178	/* rbtree tree calls to lookup, insert, delete
	179	* integrity data associated with an inode.
	180	*/
f381c272	181	struct integrity_iint_cache integrity_iint_find(struct inode inode);
4892722e	182
e3c4abbf	183	int integrity_kernel_read(struct file *file, loff_t offset,
bb543e39 TJB	184	void *addr, unsigned long count);
bb543e39 TJB	185
8607c501	186	#define INTEGRITY_KEYRING_EVM 0
f4dc3778	187	#define INTEGRITY_KEYRING_IMA 1
c7f7e58f	188	#define INTEGRITY_KEYRING_PLATFORM 2
d1996776 ES	189	#define INTEGRITY_KEYRING_MACHINE 3
d1996776 ES	190	#define INTEGRITY_KEYRING_MAX 4
8607c501	191
0c343af8 MG	192	extern struct dentry *integrity_dir;
0c343af8 MG	193
39b07096 TJB	194	struct modsig;
39b07096 TJB	195
f1be242c	196	#ifdef CONFIG_INTEGRITY_SIGNATURE
8607c501 DK	197
8607c501 DK	198	int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
089bc8e9	199	const char *digest, int digestlen);
39b07096	200	int integrity_modsig_verify(unsigned int id, const struct modsig *modsig);
8607c501	201
d16a8585	202	int __init integrity_init_keyring(const unsigned int id);
9d03a721	203	int __init integrity_load_x509(const unsigned int id, const char *path);
60740acc	204	int __init integrity_load_cert(const unsigned int id, const char *source,
028db3e2	205	const void *data, size_t len, key_perm_t perm);
8607c501 DK	206	#else
	207
	208	static inline int integrity_digsig_verify(const unsigned int id,
	209	const char *sig, int siglen,
	210	const char *digest, int digestlen)
	211	{
	212	return -EOPNOTSUPP;
	213	}
	214
39b07096 TJB	215	static inline int integrity_modsig_verify(unsigned int id,
	216	const struct modsig *modsig)
	217	{
	218	return -EOPNOTSUPP;
	219	}
	220
7d2ce232 MZ	221	static inline int integrity_init_keyring(const unsigned int id)
	222	{
	223	return 0;
	224	}
60740acc NJ	225
	226	static inline int __init integrity_load_cert(const unsigned int id,
	227	const char *source,
	228	const void *data, size_t len,
028db3e2	229	key_perm_t perm)
60740acc NJ	230	{
	231	return 0;
	232	}
f1be242c	233	#endif /* CONFIG_INTEGRITY_SIGNATURE */
8607c501	234
e0751257 DK	235	#ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS
	236	int asymmetric_verify(struct key keyring, const char sig,
	237	int siglen, const char *data, int datalen);
	238	#else
	239	static inline int asymmetric_verify(struct key keyring, const char sig,
	240	int siglen, const char *data, int datalen)
	241	{
	242	return -EOPNOTSUPP;
	243	}
	244	#endif
	245
39b07096 TJB	246	#ifdef CONFIG_IMA_APPRAISE_MODSIG
	247	int ima_modsig_verify(struct key keyring, const struct modsig modsig);
	248	#else
	249	static inline int ima_modsig_verify(struct key *keyring,
	250	const struct modsig *modsig)
	251	{
	252	return -EOPNOTSUPP;
	253	}
	254	#endif
	255
fd5f4e90 DK	256	#ifdef CONFIG_IMA_LOAD_X509
	257	void __init ima_load_x509(void);
	258	#else
	259	static inline void ima_load_x509(void)
	260	{
	261	}
	262	#endif
	263
2ce523eb DK	264	#ifdef CONFIG_EVM_LOAD_X509
	265	void __init evm_load_x509(void);
	266	#else
	267	static inline void evm_load_x509(void)
	268	{
	269	}
	270	#endif
	271
d726d8d7 MZ	272	#ifdef CONFIG_INTEGRITY_AUDIT
	273	/* declarations */
	274	void integrity_audit_msg(int audit_msgno, struct inode *inode,
	275	const unsigned char fname, const char op,
	276	const char *cause, int result, int info);
2afd020a	277
2f845882 LR	278	void integrity_audit_message(int audit_msgno, struct inode *inode,
	279	const unsigned char fname, const char op,
	280	const char *cause, int result, int info,
	281	int errno);
	282
2afd020a SB	283	static inline struct audit_buffer *
	284	integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type)
	285	{
	286	return audit_log_start(ctx, gfp_mask, type);
	287	}
	288
d726d8d7 MZ	289	#else
	290	static inline void integrity_audit_msg(int audit_msgno, struct inode *inode,
	291	const unsigned char *fname,
	292	const char op, const char cause,
	293	int result, int info)
	294	{
	295	}
2afd020a	296
2f845882 LR	297	static inline void integrity_audit_message(int audit_msgno,
	298	struct inode *inode,
	299	const unsigned char *fname,
	300	const char op, const char cause,
	301	int result, int info, int errno)
	302	{
	303	}
	304
2afd020a SB	305	static inline struct audit_buffer *
	306	integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type)
	307	{
	308	return NULL;
	309	}
	310
d726d8d7	311	#endif
60740acc NJ	312
	313	#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
	314	void __init add_to_platform_keyring(const char source, const void data,
	315	size_t len);
	316	#else
	317	static inline void __init add_to_platform_keyring(const char *source,
	318	const void *data, size_t len)
	319	{
	320	}
	321	#endif
d1996776 ES	322
	323	#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
	324	void __init add_to_machine_keyring(const char source, const void data, size_t len);
4cb1ed94	325	bool __init imputed_trust_enabled(void);
d1996776 ES	326	#else
	327	static inline void __init add_to_machine_keyring(const char *source,
	328	const void *data, size_t len)
	329	{
	330	}
4cb1ed94 NJ	331
4cb1ed94 NJ	332	static inline bool __init imputed_trust_enabled(void)
3d6ae1a5 ES	333	{
	334	return false;
	335	}
d1996776	336	#endif