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Commit 2960e6cb authored by Dmitry Kasatkin's avatar Dmitry Kasatkin Committed by Mimi Zohar
Browse files

evm: additional parameter to pass integrity cache entry 'iint' 



Additional iint parameter allows to skip lookup in the cache.

Signed-off-by: default avatarDmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: default avatarMimi Zohar <zohar@linux.vnet.ibm.com>
parent d46eb369

include/linux/evm.h

+6 −2
Original line number Diff line number Diff line
@@ -11,11 +11,14 @@ 
#include <linux/integrity.h>

#include <linux/xattr.h>



struct integrity_iint_cache;



#ifdef CONFIG_EVM

extern enum integrity_status evm_verifyxattr(struct dentry *dentry,

					     const char *xattr_name,

					     void *xattr_value,

					     size_t xattr_value_len);

					     size_t xattr_value_len,

					     struct integrity_iint_cache *iint);

extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);

extern int evm_inode_setxattr(struct dentry *dentry, const char *name,

			      const void *value, size_t size);
@@ -34,7 +37,8 @@ extern int evm_inode_init_security(struct inode *inode, 
static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,

						    const char *xattr_name,

						    void *xattr_value,

						    size_t xattr_value_len)

						    size_t xattr_value_len,

					struct integrity_iint_cache *iint)

{

	return INTEGRITY_UNKNOWN;

}

security/integrity/evm/evm_main.c

+8 −10
Original line number Diff line number Diff line
@@ -127,21 +127,19 @@ static int evm_protected_xattr(const char *req_xattr_name) 
 */

enum integrity_status evm_verifyxattr(struct dentry *dentry,

				      const char *xattr_name,

				      void *xattr_value, size_t xattr_value_len)

				      void *xattr_value, size_t xattr_value_len,

				      struct integrity_iint_cache *iint)

{

	struct inode *inode = dentry->d_inode;

	struct integrity_iint_cache *iint;

	enum integrity_status status;



	if (!evm_initialized || !evm_protected_xattr(xattr_name))

		return INTEGRITY_UNKNOWN;



	iint = integrity_iint_find(inode);

	if (!iint) {

		iint = integrity_iint_find(dentry->d_inode);

		if (!iint)

			return INTEGRITY_UNKNOWN;

	status = evm_verify_hmac(dentry, xattr_name, xattr_value,

	}

	return evm_verify_hmac(dentry, xattr_name, xattr_value,

				 xattr_value_len, iint);

	return status;

}

EXPORT_SYMBOL_GPL(evm_verifyxattr);