aboutsummaryrefslogtreecommitdiff
path: root/security/security.c
diff options
context:
space:
mode:
authorMimi Zohar <zohar@linux.vnet.ibm.com>2011-03-09 14:38:26 -0500
committerMimi Zohar <zohar@linux.vnet.ibm.com>2011-07-18 12:29:42 -0400
commit3e1be52d6c6b21d9080dd886c0e609e009831562 (patch)
tree2947250698b89eed0149af2d69a33b303c4d6be4 /security/security.c
parent6be5cc5246f807fd8ede9f5f1bb2826f2c598658 (diff)
downloadvexpress-lsk-3e1be52d6c6b21d9080dd886c0e609e009831562.tar.gz
security: imbed evm calls in security hooks
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 <zohar@us.ibm.com> Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Diffstat (limited to 'security/security.c')
-rw-r--r--security/security.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/security/security.c b/security/security.c
index 947fdcfbc83..21a79b3d1e8 100644
--- a/security/security.c
+++ b/security/security.c
@@ -18,6 +18,7 @@
#include <linux/security.h>
#include <linux/integrity.h>
#include <linux/ima.h>
+#include <linux/evm.h>
#define MAX_LSM_XATTR 1
@@ -580,9 +581,14 @@ int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
int security_inode_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
+ int ret;
+
if (unlikely(IS_PRIVATE(dentry->d_inode)))
return 0;
- return security_ops->inode_setxattr(dentry, name, value, size, flags);
+ ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
+ if (ret)
+ return ret;
+ return evm_inode_setxattr(dentry, name, value, size);
}
void security_inode_post_setxattr(struct dentry *dentry, const char *name,
@@ -591,6 +597,7 @@ void security_inode_post_setxattr(struct dentry *dentry, const char *name,
if (unlikely(IS_PRIVATE(dentry->d_inode)))
return;
security_ops->inode_post_setxattr(dentry, name, value, size, flags);
+ evm_inode_post_setxattr(dentry, name, value, size);
}
int security_inode_getxattr(struct dentry *dentry, const char *name)
@@ -609,9 +616,14 @@ int security_inode_listxattr(struct dentry *dentry)
int security_inode_removexattr(struct dentry *dentry, const char *name)
{
+ int ret;
+
if (unlikely(IS_PRIVATE(dentry->d_inode)))
return 0;
- return security_ops->inode_removexattr(dentry, name);
+ ret = security_ops->inode_removexattr(dentry, name);
+ if (ret)
+ return ret;
+ return evm_inode_removexattr(dentry, name);
}
int security_inode_need_killpriv(struct dentry *dentry)