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From:   Roberto Sassu <roberto.sassu@huaweicloud.com>
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        linux-security-module@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 v3 11/25] security: Align inode_setattr hook definition with EVM
Date:   Mon,  4 Sep 2023 15:34:01 +0200
Message-Id: <20230904133415.1799503-12-roberto.sassu@huaweicloud.com>
In-Reply-To: <20230904133415.1799503-1-roberto.sassu@huaweicloud.com>
References: <20230904133415.1799503-1-roberto.sassu@huaweicloud.com>
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From: Roberto Sassu <roberto.sassu@huawei.com>

Add the idmap parameter to the definition, so that evm_inode_setattr() can
be registered as this hook implementation.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/linux/lsm_hook_defs.h | 3 ++-
 security/security.c           | 2 +-
 security/selinux/hooks.c      | 3 ++-
 security/smack/smack_lsm.c    | 4 +++-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 4bdddb52a8fe..fdf075a6b1bb 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -134,7 +134,8 @@ LSM_HOOK(int, 0, inode_readlink, struct dentry *dentry)
 LSM_HOOK(int, 0, inode_follow_link, struct dentry *dentry, struct inode *inode,
 	 bool rcu)
 LSM_HOOK(int, 0, inode_permission, struct inode *inode, int mask)
-LSM_HOOK(int, 0, inode_setattr, struct dentry *dentry, struct iattr *attr)
+LSM_HOOK(int, 0, inode_setattr, struct mnt_idmap *idmap, struct dentry *dentry,
+	 struct iattr *attr)
 LSM_HOOK(int, 0, inode_getattr, const struct path *path)
 LSM_HOOK(int, 0, inode_setxattr, struct mnt_idmap *idmap,
 	 struct dentry *dentry, const char *name, const void *value,
diff --git a/security/security.c b/security/security.c
index cb6242feb968..2b24d01cf181 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2117,7 +2117,7 @@ int security_inode_setattr(struct mnt_idmap *idmap,
 
 	if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 		return 0;
-	ret = call_int_hook(inode_setattr, 0, dentry, attr);
+	ret = call_int_hook(inode_setattr, 0, idmap, dentry, attr);
 	if (ret)
 		return ret;
 	return evm_inode_setattr(idmap, dentry, attr);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index ee7c49c2cfd3..bfcc4d9aa5ab 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3075,7 +3075,8 @@ static int selinux_inode_permission(struct inode *inode, int mask)
 	return rc;
 }
 
-static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
+static int selinux_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
+				 struct iattr *iattr)
 {
 	const struct cred *cred = current_cred();
 	struct inode *inode = d_backing_inode(dentry);
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 679156601a10..89f2669d50a9 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1181,12 +1181,14 @@ static int smack_inode_permission(struct inode *inode, int mask)
 
 /**
  * smack_inode_setattr - Smack check for setting attributes
+ * @idmap: idmap of the mount
  * @dentry: the object
  * @iattr: for the force flag
  *
  * Returns 0 if access is permitted, an error code otherwise
  */
-static int smack_inode_setattr(struct dentry *dentry, struct iattr *iattr)
+static int smack_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
+			       struct iattr *iattr)
 {
 	struct smk_audit_info ad;
 	int rc;
-- 
2.34.1