2023-03-03 18:38:16

by Roberto Sassu

[permalink] [raw]
Subject: [PATCH 08/28] evm: Align evm_inode_post_setattr() definition with LSM infrastructure

From: Roberto Sassu <[email protected]>

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

Signed-off-by: Roberto Sassu <[email protected]>
---
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 5050ab4cc45..da45cf01be6 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -486,7 +486,7 @@ 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 cc64cea354e..b41f98791a7 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);
@@ -96,7 +97,8 @@ 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 40cfe0d16c8..0cb63dfc998 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -838,6 +838,7 @@ 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
*
@@ -847,7 +848,8 @@ 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;
--
2.25.1



2023-03-06 17:02:48

by Stefan Berger

[permalink] [raw]
Subject: Re: [PATCH 08/28] evm: Align evm_inode_post_setattr() definition with LSM infrastructure



On 3/3/23 13:18, Roberto Sassu wrote:
> From: Roberto Sassu <[email protected]>
>
> Change evm_inode_post_setattr() definition, so that it can be registered as
> implementation of the inode_post_setattr hook.
>
> Signed-off-by: Roberto Sassu <[email protected]>

Reviewed-by: Stefan Berger <[email protected]>