mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
d726d8d719
This patch moves the integrity_audit_msg() function and defintion to security/integrity/, the parent directory, renames the 'ima_audit' boot command line option to 'integrity_audit', and fixes the Kconfig help text to reflect the actual code. Changelog: - Fixed ifdef inclusion of integrity_audit_msg() (Fengguang Wu) Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/*
|
|
* Copyright (C) 2009-2010 IBM Corporation
|
|
*
|
|
* Authors:
|
|
* Mimi Zohar <zohar@us.ibm.com>
|
|
*
|
|
* 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, version 2 of the
|
|
* License.
|
|
*
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/integrity.h>
|
|
#include <crypto/sha.h>
|
|
#include <linux/key.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
|
|
|
|
/* iint cache flags */
|
|
#define IMA_ACTION_FLAGS 0xff000000
|
|
#define IMA_DIGSIG 0x01000000
|
|
#define IMA_DIGSIG_REQUIRED 0x02000000
|
|
|
|
#define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \
|
|
IMA_APPRAISE_SUBMASK)
|
|
#define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \
|
|
IMA_COLLECTED | IMA_APPRAISED_SUBMASK)
|
|
|
|
/* iint subaction appraise cache flags */
|
|
#define IMA_FILE_APPRAISE 0x00000100
|
|
#define IMA_FILE_APPRAISED 0x00000200
|
|
#define IMA_MMAP_APPRAISE 0x00000400
|
|
#define IMA_MMAP_APPRAISED 0x00000800
|
|
#define IMA_BPRM_APPRAISE 0x00001000
|
|
#define IMA_BPRM_APPRAISED 0x00002000
|
|
#define IMA_MODULE_APPRAISE 0x00004000
|
|
#define IMA_MODULE_APPRAISED 0x00008000
|
|
#define IMA_APPRAISE_SUBMASK (IMA_FILE_APPRAISE | IMA_MMAP_APPRAISE | \
|
|
IMA_BPRM_APPRAISE | IMA_MODULE_APPRAISE)
|
|
#define IMA_APPRAISED_SUBMASK (IMA_FILE_APPRAISED | IMA_MMAP_APPRAISED | \
|
|
IMA_BPRM_APPRAISED | IMA_MODULE_APPRAISED)
|
|
|
|
enum evm_ima_xattr_type {
|
|
IMA_XATTR_DIGEST = 0x01,
|
|
EVM_XATTR_HMAC,
|
|
EVM_IMA_XATTR_DIGSIG,
|
|
};
|
|
|
|
struct evm_ima_xattr_data {
|
|
u8 type;
|
|
u8 digest[SHA1_DIGEST_SIZE];
|
|
} __attribute__((packed));
|
|
|
|
/* integrity data associated with an inode */
|
|
struct integrity_iint_cache {
|
|
struct rb_node rb_node; /* rooted in integrity_iint_tree */
|
|
struct inode *inode; /* back pointer to inode in question */
|
|
u64 version; /* track inode changes */
|
|
unsigned long flags;
|
|
struct evm_ima_xattr_data ima_xattr;
|
|
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_module_status:4;
|
|
enum integrity_status evm_status:4;
|
|
};
|
|
|
|
/* rbtree tree calls to lookup, insert, delete
|
|
* integrity data associated with an inode.
|
|
*/
|
|
struct integrity_iint_cache *integrity_iint_insert(struct inode *inode);
|
|
struct integrity_iint_cache *integrity_iint_find(struct inode *inode);
|
|
|
|
#define INTEGRITY_KEYRING_EVM 0
|
|
#define INTEGRITY_KEYRING_MODULE 1
|
|
#define INTEGRITY_KEYRING_IMA 2
|
|
#define INTEGRITY_KEYRING_MAX 3
|
|
|
|
#ifdef CONFIG_INTEGRITY_SIGNATURE
|
|
|
|
int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
|
|
const char *digest, int digestlen);
|
|
|
|
#else
|
|
|
|
static inline int integrity_digsig_verify(const unsigned int id,
|
|
const char *sig, int siglen,
|
|
const char *digest, int digestlen)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
#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_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);
|
|
#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)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* set during initialization */
|
|
extern int iint_initialized;
|