2023-03-03 18:37:48

by Roberto Sassu

Subject: [PATCH 05/28] ima: Align ima_inode_setxattr() definition with LSM infrastructure

From: Roberto Sassu <[email protected]>

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

Signed-off-by: Roberto Sassu <[email protected]>
---
include/linux/ima.h | 11 +++++++----
security/integrity/ima/ima_appraise.c | 5 +++--
security/security.c | 2 +-
3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/include/linux/ima.h b/include/linux/ima.h
index dd216afab6c..6ec6725e3ad 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -194,8 +194,9 @@ static inline void ima_post_key_create_or_update(struct key *keyring,
extern bool is_ima_appraise_enabled(void);
extern void ima_inode_post_setattr(struct mnt_idmap *idmap,
struct dentry *dentry, int ia_valid);
-extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
- const void *xattr_value, size_t xattr_value_len);
+extern int ima_inode_setxattr(struct mnt_idmap *idmap, struct dentry *dentry,
+ const char *xattr_name, const void *xattr_value,
+ size_t xattr_value_len, int flags);
extern int ima_inode_set_acl(struct mnt_idmap *idmap,
struct dentry *dentry, const char *acl_name,
struct posix_acl *kacl);
@@ -218,10 +219,12 @@ static inline void ima_inode_post_setattr(struct mnt_idmap *idmap,
return;
}

-static inline int ima_inode_setxattr(struct dentry *dentry,
+static inline int ima_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)
{
return 0;
}
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 6b032bce4fe..88c5a0b2992 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -748,8 +748,9 @@ static int validate_hash_algo(struct dentry *dentry,
return -EACCES;
}

-int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
- const void *xattr_value, size_t xattr_value_len)
+int ima_inode_setxattr(struct mnt_idmap *idmap, struct dentry *dentry,
+ const char *xattr_name, const void *xattr_value,
+ size_t xattr_value_len, int flags)
{
const struct evm_ima_xattr_data *xvalue = xattr_value;
int digsig = 0;
diff --git a/security/security.c b/security/security.c
index 8d31b739879..51612dcf05b 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2221,7 +2221,7 @@ int security_inode_setxattr(struct mnt_idmap *idmap,
ret = cap_inode_setxattr(dentry, name, value, size, flags);
if (ret)
return ret;
- ret = ima_inode_setxattr(dentry, name, value, size);
+ ret = ima_inode_setxattr(idmap, dentry, name, value, size, flags);
if (ret)
return ret;
return evm_inode_setxattr(idmap, dentry, name, value, size);
--
2.25.1

2023-03-06 18:06:32

by Stefan Berger

Subject: Re: [PATCH 05/28] ima: Align ima_inode_setxattr() definition with LSM infrastructure

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

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