Adding new fields (mount namespace id, file inode and device name) to
uniquely identify a pathname considering different mount namespaces.
The file inode on a given device is unique and these fields are
required to identify a namespace id since this id can be released
and later reused by a different namespace.
Signed-off-by: Guilherme Magalhaes <guilherme.magalh...@hpe.com>
---
security/integrity/ima/ima_api.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index c2edba8..b05c1fd 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -18,6 +18,7 @@
#include <linux/fs.h>
#include <linux/xattr.h>
#include <linux/evm.h>
+#include <linux/proc_ns.h>
#include "ima.h"
@@ -293,6 +294,7 @@ void ima_audit_measurement(struct integrity_iint_cache
*iint,
char hash[(iint->ima_hash->length * 2) + 1];
const char *algo_name = hash_algo_name[iint->ima_hash->algo];
char algo_hash[sizeof(hash) + strlen(algo_name) + 2];
+ struct ns_common *ns;
int i;
if (iint->flags & IMA_AUDITED)
@@ -312,6 +314,12 @@ void ima_audit_measurement(struct integrity_iint_cache
*iint,
audit_log_format(ab, " hash=");
snprintf(algo_hash, sizeof(algo_hash), "%s:%s", algo_name, hash);
audit_log_untrustedstring(ab, algo_hash);
+ ns = mntns_operations.get(current);
+ audit_log_format(ab, " mnt_ns=%u", ns->inum);
+ mntns_operations.put(ns);
+ audit_log_format(ab, " dev=");
+ audit_log_untrustedstring(ab, iint->inode->i_sb->s_id);
+ audit_log_format(ab, " ino=%lu", iint->inode->i_ino);
audit_log_task_info(ab, current);
audit_log_end(ab);
--
2.7.4
