From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/security/keys/persistent.c | 16 +++++++---------
1 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/kernel/security/keys/persistent.c b/kernel/security/keys/persistent.c
index d0cb5b3..97af230 100644
--- a/kernel/security/keys/persistent.c
+++ b/kernel/security/keys/persistent.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* General persistent per-UID keyrings register
*
* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
*/
#include <linux/user_namespace.h>
@@ -84,15 +80,17 @@
long ret;
/* Look in the register if it exists */
+ memset(&index_key, 0, sizeof(index_key));
index_key.type = &key_type_keyring;
index_key.description = buf;
index_key.desc_len = sprintf(buf, "_persistent.%u", from_kuid(ns, uid));
+ key_set_index_key(&index_key);
if (ns->persistent_keyring_register) {
reg_ref = make_key_ref(ns->persistent_keyring_register, true);
- down_read(&ns->persistent_keyring_register_sem);
+ down_read(&ns->keyring_sem);
persistent_ref = find_key_to_update(reg_ref, &index_key);
- up_read(&ns->persistent_keyring_register_sem);
+ up_read(&ns->keyring_sem);
if (persistent_ref)
goto found;
@@ -101,9 +99,9 @@
/* It wasn't in the register, so we'll need to create it. We might
* also need to create the register.
*/
- down_write(&ns->persistent_keyring_register_sem);
+ down_write(&ns->keyring_sem);
persistent_ref = key_create_persistent(ns, uid, &index_key);
- up_write(&ns->persistent_keyring_register_sem);
+ up_write(&ns->keyring_sem);
if (!IS_ERR(persistent_ref))
goto found;
--
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