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/inode.c | 44 +++++++++++++++++++++-----------------------
1 files changed, 21 insertions(+), 23 deletions(-)
diff --git a/kernel/security/inode.c b/kernel/security/inode.c
index 0107dc7..6c32693 100644
--- a/kernel/security/inode.c
+++ b/kernel/security/inode.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* inode.c - securityfs
*
* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
- *
- * 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.
*
* Based on fs/debugfs/inode.c which had the following copyright notice:
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
@@ -13,8 +10,10 @@
*/
/* #define DEBUG */
-#include <linux/module.h>
+#include <linux/sysfs.h>
+#include <linux/kobject.h>
#include <linux/fs.h>
+#include <linux/fs_context.h>
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/init.h>
@@ -26,25 +25,19 @@
static struct vfsmount *mount;
static int mount_count;
-static void securityfs_i_callback(struct rcu_head *head)
+static void securityfs_free_inode(struct inode *inode)
{
- struct inode *inode = container_of(head, struct inode, i_rcu);
if (S_ISLNK(inode->i_mode))
kfree(inode->i_link);
free_inode_nonrcu(inode);
}
-static void securityfs_destroy_inode(struct inode *inode)
-{
- call_rcu(&inode->i_rcu, securityfs_i_callback);
-}
-
static const struct super_operations securityfs_super_operations = {
.statfs = simple_statfs,
- .destroy_inode = securityfs_destroy_inode,
+ .free_inode = securityfs_free_inode,
};
-static int fill_super(struct super_block *sb, void *data, int silent)
+static int securityfs_fill_super(struct super_block *sb, struct fs_context *fc)
{
static const struct tree_descr files[] = {{""}};
int error;
@@ -58,17 +51,25 @@
return 0;
}
-static struct dentry *get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name,
- void *data)
+static int securityfs_get_tree(struct fs_context *fc)
{
- return mount_single(fs_type, flags, data, fill_super);
+ return get_tree_single(fc, securityfs_fill_super);
+}
+
+static const struct fs_context_operations securityfs_context_ops = {
+ .get_tree = securityfs_get_tree,
+};
+
+static int securityfs_init_fs_context(struct fs_context *fc)
+{
+ fc->ops = &securityfs_context_ops;
+ return 0;
}
static struct file_system_type fs_type = {
.owner = THIS_MODULE,
.name = "securityfs",
- .mount = get_sb,
+ .init_fs_context = securityfs_init_fs_context,
.kill_sb = kill_litter_super,
};
@@ -127,7 +128,7 @@
dir = d_inode(parent);
inode_lock(dir);
- dentry = lookup_one_len2(name, mount, parent, strlen(name));
+ dentry = lookup_one_len(name, parent, strlen(name));
if (IS_ERR(dentry))
goto out;
@@ -346,7 +347,4 @@
#endif
return 0;
}
-
core_initcall(securityfs_init);
-MODULE_LICENSE("GPL");
-
--
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