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Message-Id: <20231027083558.484911-8-roberto.sassu@huaweicloud.com>
Date: Fri, 27 Oct 2023 10:35:42 +0200
From: Roberto Sassu <roberto.sassu@...weicloud.com>
To: viro@...iv.linux.org.uk, brauner@...nel.org,
chuck.lever@...cle.com, jlayton@...nel.org, neilb@...e.de,
kolga@...app.com, Dai.Ngo@...cle.com, tom@...pey.com,
paul@...l-moore.com, jmorris@...ei.org, serge@...lyn.com,
zohar@...ux.ibm.com, dmitry.kasatkin@...il.com,
dhowells@...hat.com, jarkko@...nel.org,
stephen.smalley.work@...il.com, eparis@...isplace.org,
casey@...aufler-ca.com, mic@...ikod.net
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-nfs@...r.kernel.org, linux-security-module@...r.kernel.org,
linux-integrity@...r.kernel.org, keyrings@...r.kernel.org,
selinux@...r.kernel.org, Roberto Sassu <roberto.sassu@...wei.com>,
Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH v4 07/23] evm: Align evm_inode_setxattr() definition with LSM infrastructure
From: Roberto Sassu <roberto.sassu@...wei.com>
Change evm_inode_setxattr() definition, so that it can be registered as
implementation of the inode_setxattr hook.
Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
Reviewed-by: Stefan Berger <stefanb@...ux.ibm.com>
Reviewed-by: Mimi Zohar <zohar@...ux.ibm.com>
---
include/linux/evm.h | 4 ++--
security/integrity/evm/evm_main.c | 3 ++-
security/security.c | 2 +-
3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/include/linux/evm.h b/include/linux/evm.h
index cf976d8dbd7a..7c6a74dbc093 100644
--- a/include/linux/evm.h
+++ b/include/linux/evm.h
@@ -27,7 +27,7 @@ extern void evm_inode_post_setattr(struct mnt_idmap *idmap,
struct dentry *dentry, int ia_valid);
extern int evm_inode_setxattr(struct mnt_idmap *idmap,
struct dentry *dentry, const char *name,
- const void *value, size_t size);
+ const void *value, size_t size, int flags);
extern void evm_inode_post_setxattr(struct dentry *dentry,
const char *xattr_name,
const void *xattr_value,
@@ -106,7 +106,7 @@ static inline void evm_inode_post_setattr(struct mnt_idmap *idmap,
static inline int evm_inode_setxattr(struct mnt_idmap *idmap,
struct dentry *dentry, const char *name,
- const void *value, size_t size)
+ const void *value, size_t size, int flags)
{
return 0;
}
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index d2f986a55d38..779ec35fb39f 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -559,6 +559,7 @@ static int evm_protect_xattr(struct mnt_idmap *idmap,
* @xattr_name: pointer to the affected extended attribute name
* @xattr_value: pointer to the new extended attribute value
* @xattr_value_len: pointer to the new extended attribute value length
+ * @flags: flags to pass into filesystem operations
*
* Before allowing the 'security.evm' protected xattr to be updated,
* verify the existing value is valid. As only the kernel should have
@@ -568,7 +569,7 @@ static int evm_protect_xattr(struct mnt_idmap *idmap,
*/
int evm_inode_setxattr(struct mnt_idmap *idmap, struct dentry *dentry,
const char *xattr_name, const void *xattr_value,
- size_t xattr_value_len)
+ size_t xattr_value_len, int flags)
{
const struct evm_ima_xattr_data *xattr_data = xattr_value;
diff --git a/security/security.c b/security/security.c
index b222c4b81760..f508101bf465 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2265,7 +2265,7 @@ int security_inode_setxattr(struct mnt_idmap *idmap,
ret = ima_inode_setxattr(idmap, dentry, name, value, size, flags);
if (ret)
return ret;
- return evm_inode_setxattr(idmap, dentry, name, value, size);
+ return evm_inode_setxattr(idmap, dentry, name, value, size, flags);
}
/**
--
2.34.1
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