From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/security/selinux/include/objsec.h | 65 +++++++++++++++++++++++---------
1 files changed, 46 insertions(+), 19 deletions(-)
diff --git a/kernel/security/selinux/include/objsec.h b/kernel/security/selinux/include/objsec.h
index 25b69dc..330b7b6 100644
--- a/kernel/security/selinux/include/objsec.h
+++ b/kernel/security/selinux/include/objsec.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* NSA Security-Enhanced Linux (SELinux) security module
*
@@ -11,10 +12,6 @@
* Copyright (C) 2001,2002 Networks Associates Technology, Inc.
* Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
* Copyright (C) 2016 Mellanox Technologies
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2,
- * as published by the Free Software Foundation.
*/
#ifndef _SELINUX_OBJSEC_H_
#define _SELINUX_OBJSEC_H_
@@ -25,6 +22,8 @@
#include <linux/binfmts.h>
#include <linux/in.h>
#include <linux/spinlock.h>
+#include <linux/lsm_hooks.h>
+#include <linux/msg.h>
#include <net/net_namespace.h>
#include "flask.h"
#include "avc.h"
@@ -36,17 +35,7 @@
u32 create_sid; /* fscreate SID */
u32 keycreate_sid; /* keycreate SID */
u32 sockcreate_sid; /* fscreate SID */
-};
-
-/*
- * get the subjective security ID of the current task
- */
-static inline u32 current_sid(void)
-{
- const struct task_security_struct *tsec = current_security();
-
- return tsec->sid;
-}
+} __randomize_layout;
enum label_initialized {
LABEL_INVALID, /* invalid or not initialized */
@@ -56,10 +45,7 @@
struct inode_security_struct {
struct inode *inode; /* back pointer to inode object */
- union {
- struct list_head list; /* list of inode_security_struct */
- struct rcu_head rcu; /* for freeing the inode_security_struct */
- };
+ struct list_head list; /* list of inode_security_struct */
u32 task_sid; /* SID of creating task */
u32 sid; /* SID of this object */
u16 sclass; /* security class of this object */
@@ -162,4 +148,45 @@
u32 sid; /* SID of perf_event obj creator */
};
+extern struct lsm_blob_sizes selinux_blob_sizes;
+static inline struct task_security_struct *selinux_cred(const struct cred *cred)
+{
+ return cred->security + selinux_blob_sizes.lbs_cred;
+}
+
+static inline struct file_security_struct *selinux_file(const struct file *file)
+{
+ return file->f_security + selinux_blob_sizes.lbs_file;
+}
+
+static inline struct inode_security_struct *selinux_inode(
+ const struct inode *inode)
+{
+ if (unlikely(!inode->i_security))
+ return NULL;
+ return inode->i_security + selinux_blob_sizes.lbs_inode;
+}
+
+static inline struct msg_security_struct *selinux_msg_msg(
+ const struct msg_msg *msg_msg)
+{
+ return msg_msg->security + selinux_blob_sizes.lbs_msg_msg;
+}
+
+static inline struct ipc_security_struct *selinux_ipc(
+ const struct kern_ipc_perm *ipc)
+{
+ return ipc->security + selinux_blob_sizes.lbs_ipc;
+}
+
+/*
+ * get the subjective security ID of the current task
+ */
+static inline u32 current_sid(void)
+{
+ const struct task_security_struct *tsec = selinux_cred(current_cred());
+
+ return tsec->sid;
+}
+
#endif /* _SELINUX_OBJSEC_H_ */
--
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