From 05e59e5fb0064c97a1c10921ecd549f2d4a58565 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:14:40 +0000
Subject: [PATCH] add REDIRECT
---
kernel/security/apparmor/include/path.h | 69 ++--------------------------------
1 files changed, 4 insertions(+), 65 deletions(-)
diff --git a/kernel/security/apparmor/include/path.h b/kernel/security/apparmor/include/path.h
index 12abfdd..44a7945 100644
--- a/kernel/security/apparmor/include/path.h
+++ b/kernel/security/apparmor/include/path.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* AppArmor security module
*
@@ -5,16 +6,10 @@
*
* Copyright (C) 1998-2008 Novell/SUSE
* Copyright 2009-2010 Canonical Ltd.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, version 2 of the
- * License.
*/
#ifndef __AA_PATH_H
#define __AA_PATH_H
-
enum path_flags {
PATH_IS_DIR = 0x1, /* path is a directory */
@@ -30,64 +25,8 @@
const char **name, const char **info,
const char *disconnected);
-#define MAX_PATH_BUFFERS 2
-
-/* Per cpu buffers used during mediation */
-/* preallocated buffers to use during path lookups */
-struct aa_buffers {
- char *buf[MAX_PATH_BUFFERS];
-};
-
-#include <linux/percpu.h>
-#include <linux/preempt.h>
-#include <linux/locallock.h>
-
-DECLARE_PER_CPU(struct aa_buffers, aa_buffers);
-DECLARE_LOCAL_IRQ_LOCK(aa_buffers_lock);
-
-#define ASSIGN(FN, A, X, N) ((X) = FN(A, N))
-#define EVAL1(FN, A, X) ASSIGN(FN, A, X, 0) /*X = FN(0)*/
-#define EVAL2(FN, A, X, Y...) \
- do { ASSIGN(FN, A, X, 1); EVAL1(FN, A, Y); } while (0)
-#define EVAL(FN, A, X...) CONCATENATE(EVAL, COUNT_ARGS(X))(FN, A, X)
-
-#define for_each_cpu_buffer(I) for ((I) = 0; (I) < MAX_PATH_BUFFERS; (I)++)
-
-#ifdef CONFIG_PREEMPT_RT_BASE
-static inline void AA_BUG_PREEMPT_ENABLED(const char *s)
-{
- struct local_irq_lock *lv;
-
- lv = this_cpu_ptr(&aa_buffers_lock);
- WARN_ONCE(lv->owner != current,
- "__get_buffer without aa_buffers_lock\n");
-}
-
-#elif defined(CONFIG_DEBUG_PREEMPT)
-#define AA_BUG_PREEMPT_ENABLED(X) AA_BUG(preempt_count() <= 0, X)
-#else
-#define AA_BUG_PREEMPT_ENABLED(X) /* nop */
-#endif
-
-#define __get_buffer(C, N) ({ \
- AA_BUG_PREEMPT_ENABLED("__get_buffer without preempt disabled"); \
- (C)->buf[(N)]; })
-
-#define __get_buffers(C, X...) EVAL(__get_buffer, C, X)
-
-#define __put_buffers(X, Y...) ((void)&(X))
-
-#define get_buffers(X...) \
-do { \
- struct aa_buffers *__cpu_var; \
- __cpu_var = get_locked_ptr(aa_buffers_lock, &aa_buffers); \
- __get_buffers(__cpu_var, X); \
-} while (0)
-
-#define put_buffers(X, Y...) \
-do { \
- __put_buffers(X, Y); \
- put_locked_ptr(aa_buffers_lock, &aa_buffers); \
-} while (0)
+#define IN_ATOMIC true
+char *aa_get_buffer(bool in_atomic);
+void aa_put_buffer(char *buf);
#endif /* __AA_PATH_H */
--
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