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security: imbed evm calls in security hooks

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Imbed the evm calls evm_inode_setxattr(), evm_inode_post_setxattr(),
evm_inode_removexattr() in the security hooks.  evm_inode_setxattr()
protects security.evm xattr.  evm_inode_post_setxattr() and
evm_inode_removexattr() updates the hmac associated with an inode.

(Assumes an LSM module protects the setting/removing of xattr.)

Changelog:
  - Don't define evm_verifyxattr(), unless CONFIG_INTEGRITY is enabled.
  - xattr_name is a 'const', value is 'void *'

Signed-off-by: Mimi Zohar <[email protected]>
Acked-by: Serge Hallyn <[email protected]>
This commit is contained in:
Mimi Zohar 2011-03-09 14:38:26 -05:00
commit 3e1be52d6c
3 changed files with 71 additions and 2 deletions
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1
security/integrity/evm/evm_main.c
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@ -18,6 +18,7 @@
#include <linux/crypto.h>
#include <linux/xattr.h>
#include <linux/integrity.h>
#include <linux/evm.h>
#include "evm.h"
int evm_initialized;