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Groups > linux.kernel > #1639868

[RFC 01/11] ima: qualify pathname in audit info record

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Adding new field (mount namespace id, along with already existent 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.magalhaes@hpe.com>
---
 security/integrity/integrity_audit.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/security/integrity/integrity_audit.c b/security/integrity/integrity_audit.c
index 90987d1..e675e42 100644
--- a/security/integrity/integrity_audit.c
+++ b/security/integrity/integrity_audit.c
@@ -13,6 +13,7 @@
 #include <linux/fs.h>
 #include <linux/gfp.h>
 #include <linux/audit.h>
+#include <linux/proc_ns.h>
 #include "integrity.h"
 
 static int integrity_audit_info;
@@ -52,8 +53,12 @@ void integrity_audit_msg(int audit_msgno, struct inode *inode,
 	audit_log_format(ab, " comm=");
 	audit_log_untrustedstring(ab, get_task_comm(name, current));
 	if (fname) {
+		struct ns_common *ns;
 		audit_log_format(ab, " name=");
 		audit_log_untrustedstring(ab, fname);
+		ns = mntns_operations.get(current);
+		audit_log_format(ab, " mnt_ns=%u", ns->inum);
+		mntns_operations.put(ns);
 	}
 	if (inode) {
 		audit_log_format(ab, " dev=");
-- 
2.7.4

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[RFC 00/11] ima: namespace support for IMA policy Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:30 +0200
  [RFC 01/11] ima: qualify pathname in audit info record Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:30 +0200
  [RFC 04/11] ima: add support to namespace securityfs file Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:30 +0200
    Re: [RFC 04/11] ima: add support to namespace securityfs file Tycho Andersen <tycho@docker.com> - 2017-05-18 23:40 +0200
    Re: [RFC 04/11] ima: add support to namespace securityfs file Mimi Zohar <zohar@linux.vnet.ibm.com> - 2017-05-24 22:20 +0200
  [RFC 02/11] ima: qualify pathname in audit measurement record Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:30 +0200
  [RFC 10/11] ima: handling all policy flags per namespace using ima_ns_policy structure Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:30 +0200
  [RFC 07/11] ima: new namespace policy structure to track initial namespace policy data Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:40 +0200
  [RFC 08/11] ima: block initial namespace id on the namespace policy interface Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:40 +0200
  [RFC 05/11] ima: store new namespace policy structure in a radix tree Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:40 +0200
  [RFC 06/11] ima, fs: release namespace policy resources Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:40 +0200
  [RFC 09/11] ima: delete namespace policy securityfs file in write-once mode Guilherme Magalhaes <guilherme.magalhaes@hpe.com> - 2017-05-11 18:40 +0200

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