[PATCH v4 06/23] evm: Align evm_inode_post_setattr() definition with LSM infrastructure

From: Roberto Sassu <roberto.sassu@huaweicloud.com>
To: viro@zeniv.linux.org.uk, brauner@kernel.org,
	chuck.lever@oracle.com, jlayton@kernel.org, neilb@suse.de,
	kolga@netapp.com, Dai.Ngo@oracle.com, tom@talpey.com,
	paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com,
	zohar@linux.ibm.com, dmitry.kasatkin@gmail.com,
	dhowells@redhat.com, jarkko@kernel.org,
	stephen.smalley.work@gmail.com, eparis@parisplace.org,
	casey@schaufler-ca.com, mic@digikod.net
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-nfs@vger.kernel.org, linux-security-module@vger.kernel.org,
	linux-integrity@vger.kernel.org, keyrings@vger.kernel.org,
	selinux@vger.kernel.org, Roberto Sassu <roberto.sassu@huawei.com>,
	Stefan Berger <stefanb@linux.ibm.com>
Subject: [PATCH v4 06/23] evm: Align evm_inode_post_setattr() definition with LSM infrastructure
Date: Fri, 27 Oct 2023 10:35:41 +0200	[thread overview]
Message-ID: <20231027083558.484911-7-roberto.sassu@huaweicloud.com> (raw)
In-Reply-To: <20231027083558.484911-1-roberto.sassu@huaweicloud.com>

From: Roberto Sassu <roberto.sassu@huawei.com>

Change evm_inode_post_setattr() definition, so that it can be registered as
implementation of the inode_post_setattr hook (to be introduced).

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 fs/attr.c                         | 2 +-
 include/linux/evm.h               | 6 ++++--
 security/integrity/evm/evm_main.c | 4 +++-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/attr.c b/fs/attr.c
index bb658937f16a..9ecafb13a53b 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -503,7 +503,7 @@ int notify_change(struct mnt_idmap *idmap, struct dentry *dentry,
 	if (!error) {
 		fsnotify_change(dentry, ia_valid);
 		ima_inode_post_setattr(idmap, dentry, ia_valid);
-		evm_inode_post_setattr(dentry, ia_valid);
+		evm_inode_post_setattr(idmap, dentry, ia_valid);
 	}
 
 	return error;
diff --git a/include/linux/evm.h b/include/linux/evm.h
index 01fc495a83e2..cf976d8dbd7a 100644
--- a/include/linux/evm.h
+++ b/include/linux/evm.h
@@ -23,7 +23,8 @@ extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
 					     struct integrity_iint_cache *iint);
 extern int evm_inode_setattr(struct mnt_idmap *idmap,
 			     struct dentry *dentry, struct iattr *attr);
-extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);
+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);
@@ -97,7 +98,8 @@ static inline int evm_inode_setattr(struct mnt_idmap *idmap,
 	return 0;
 }
 
-static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
+static inline void evm_inode_post_setattr(struct mnt_idmap *idmap,
+					  struct dentry *dentry, int ia_valid)
 {
 	return;
 }
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index ff9a939dad8e..d2f986a55d38 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -841,6 +841,7 @@ int evm_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 
 /**
  * evm_inode_post_setattr - update 'security.evm' after modifying metadata
+ * @idmap: idmap of the idmapped mount
  * @dentry: pointer to the affected dentry
  * @ia_valid: for the UID and GID status
  *
@@ -850,7 +851,8 @@ int evm_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
  * This function is called from notify_change(), which expects the caller
  * to lock the inode's i_mutex.
  */
-void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
+void evm_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
+			    int ia_valid)
 {
 	if (!evm_revalidate_status(NULL))
 		return;
-- 
2.34.1

