From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/kernel/configs.c | 67 ++++++++++++---------------------
1 files changed, 25 insertions(+), 42 deletions(-)
diff --git a/kernel/kernel/configs.c b/kernel/kernel/configs.c
index 2df132b..a28c79c 100644
--- a/kernel/kernel/configs.c
+++ b/kernel/kernel/configs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* kernel/configs.c
* Echo the kernel .config file used to build the kernel
@@ -6,21 +7,6 @@
* Copyright (C) 2002 Randy Dunlap <rdunlap@xenotime.net>
* Copyright (C) 2002 Al Stone <ahs3@fc.hp.com>
* Copyright (C) 2002 Hewlett-Packard Company
- *
- * 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; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
@@ -30,43 +16,40 @@
#include <linux/init.h>
#include <linux/uaccess.h>
-/**************************************************/
-/* the actual current config file */
-
/*
- * Define kernel_config_data and kernel_config_data_size, which contains the
- * wrapped and compressed configuration file. The file is first compressed
- * with gzip and then bounded by two eight byte magic numbers to allow
- * extraction from a binary kernel image:
- *
- * IKCFG_ST
- * <image>
- * IKCFG_ED
+ * "IKCFG_ST" and "IKCFG_ED" are used to extract the config data from
+ * a binary kernel image or a module. See scripts/extract-ikconfig.
*/
-#define MAGIC_START "IKCFG_ST"
-#define MAGIC_END "IKCFG_ED"
-#include "config_data.h"
-
-
-#define MAGIC_SIZE (sizeof(MAGIC_START) - 1)
-#define kernel_config_data_size \
- (sizeof(kernel_config_data) - 1 - MAGIC_SIZE * 2)
+asm (
+" .pushsection .rodata, \"a\" \n"
+" .ascii \"IKCFG_ST\" \n"
+" .global kernel_config_data \n"
+"kernel_config_data: \n"
+" .incbin \"kernel/config_data.gz\" \n"
+" .global kernel_config_data_end \n"
+"kernel_config_data_end: \n"
+" .ascii \"IKCFG_ED\" \n"
+" .popsection \n"
+);
#ifdef CONFIG_IKCONFIG_PROC
+
+extern char kernel_config_data;
+extern char kernel_config_data_end;
static ssize_t
ikconfig_read_current(struct file *file, char __user *buf,
size_t len, loff_t * offset)
{
return simple_read_from_buffer(buf, len, offset,
- kernel_config_data + MAGIC_SIZE,
- kernel_config_data_size);
+ &kernel_config_data,
+ &kernel_config_data_end -
+ &kernel_config_data);
}
-static const struct file_operations ikconfig_file_ops = {
- .owner = THIS_MODULE,
- .read = ikconfig_read_current,
- .llseek = default_llseek,
+static const struct proc_ops config_gz_proc_ops = {
+ .proc_read = ikconfig_read_current,
+ .proc_lseek = default_llseek,
};
static int __init ikconfig_init(void)
@@ -75,11 +58,11 @@
/* create the current config file */
entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL,
- &ikconfig_file_ops);
+ &config_gz_proc_ops);
if (!entry)
return -ENOMEM;
- proc_set_size(entry, kernel_config_data_size);
+ proc_set_size(entry, &kernel_config_data_end - &kernel_config_data);
return 0;
}
--
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