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/lib/test_sysctl.c | 37 +++++++++++++++++++++++++++++++++----
1 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/kernel/lib/test_sysctl.c b/kernel/lib/test_sysctl.c
index 3dd801c..3750323 100644
--- a/kernel/lib/test_sysctl.c
+++ b/kernel/lib/test_sysctl.c
@@ -16,7 +16,7 @@
*/
/*
- * This module provides an interface to the the proc sysctl interfaces. This
+ * This module provides an interface to the proc sysctl interfaces. This
* driver requires CONFIG_PROC_SYSCTL. It will not normally be loaded by the
* system unless explicitly requested by name. You can also build this driver
* into your kernel.
@@ -44,9 +44,14 @@
int int_0002;
int int_0003[4];
+ int boot_int;
+
unsigned int uint_0001;
char string_0001[65];
+
+#define SYSCTL_TEST_BITMAP_SIZE 65536
+ unsigned long *bitmap_0001;
};
static struct test_sysctl_data test_data = {
@@ -57,6 +62,8 @@
.int_0003[1] = 1,
.int_0003[2] = 2,
.int_0003[3] = 3,
+
+ .boot_int = 0,
.uint_0001 = 314,
@@ -89,6 +96,15 @@
.proc_handler = proc_dointvec,
},
{
+ .procname = "boot_int",
+ .data = &test_data.boot_int,
+ .maxlen = sizeof(test_data.boot_int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
.procname = "uint_0001",
.data = &test_data.uint_0001,
.maxlen = sizeof(unsigned int),
@@ -101,6 +117,13 @@
.maxlen = sizeof(test_data.string_0001),
.mode = 0644,
.proc_handler = proc_dostring,
+ },
+ {
+ .procname = "bitmap_0001",
+ .data = &test_data.bitmap_0001,
+ .maxlen = SYSCTL_TEST_BITMAP_SIZE,
+ .mode = 0644,
+ .proc_handler = proc_do_large_bitmap,
},
{ }
};
@@ -129,15 +152,21 @@
static int __init test_sysctl_init(void)
{
- test_sysctl_header = register_sysctl_table(test_sysctl_root_table);
- if (!test_sysctl_header)
+ test_data.bitmap_0001 = kzalloc(SYSCTL_TEST_BITMAP_SIZE/8, GFP_KERNEL);
+ if (!test_data.bitmap_0001)
return -ENOMEM;
+ test_sysctl_header = register_sysctl_table(test_sysctl_root_table);
+ if (!test_sysctl_header) {
+ kfree(test_data.bitmap_0001);
+ return -ENOMEM;
+ }
return 0;
}
-late_initcall(test_sysctl_init);
+module_init(test_sysctl_init);
static void __exit test_sysctl_exit(void)
{
+ kfree(test_data.bitmap_0001);
if (test_sysctl_header)
unregister_sysctl_table(test_sysctl_header);
}
--
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