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authorDmitry Kasatkin <dmitry.kasatkin@nokia.com>2011-03-09 14:28:20 -0500
committerMimi Zohar <zohar@linux.vnet.ibm.com>2011-07-18 12:29:41 -0400
commit6be5cc5246f807fd8ede9f5f1bb2826f2c598658 (patch)
tree00fc342eb91fb50df4e8eddfe2a7294b27df8117 /include/linux/integrity.h
parent66dbc325afcef909043c30e90930a36823fc734c (diff)
downloadop-kernel-dev-6be5cc5246f807fd8ede9f5f1bb2826f2c598658.zip
op-kernel-dev-6be5cc5246f807fd8ede9f5f1bb2826f2c598658.tar.gz
evm: add support for different security.evm data types
EVM protects a file's security extended attributes(xattrs) against integrity attacks. The current patchset maintains an HMAC-sha1 value across the security xattrs, storing the value as the extended attribute 'security.evm'. We anticipate other methods for protecting the security extended attributes. This patch reserves the first byte of 'security.evm' as a place holder for the type of method. Changelog v6: - move evm_ima_xattr_type definition to security/integrity/integrity.h - defined a structure for the EVM xattr called evm_ima_xattr_data (based on Serge Hallyn's suggestion) - removed unnecessary memset Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Diffstat (limited to 'include/linux/integrity.h')
-rw-r--r--include/linux/integrity.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/integrity.h b/include/linux/integrity.h
index e715a2a..9684433 100644
--- a/include/linux/integrity.h
+++ b/include/linux/integrity.h
@@ -19,6 +19,7 @@ enum integrity_status {
INTEGRITY_UNKNOWN,
};
+/* List of EVM protected security xattrs */
#ifdef CONFIG_INTEGRITY
extern int integrity_inode_alloc(struct inode *inode);
extern void integrity_inode_free(struct inode *inode);
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