add script for automatic module insertion testing

Move msg_count handling to hello2 to comply with lab5 requirements

hello1.c

@@ -44,7 +44,6 @@ struct TimingList {
 	ktime_t t_after;
 };
 
-static unsigned int msg_count = 1;
 static struct TimingList *tl_head;
 
 static struct TimingList* write_first_node(void)
@@ -97,19 +96,10 @@ void destroy_list(void)
 
 static int __init hello_init(void)
 {
-	if (msg_count > 10) {
-		pr_err("Error: msg_count too large (%d > 10)\n", msg_count);
-		return -EINVAL;
-	}
-
-	if (msg_count == 0 || msg_count >= 5) {
-		pr_warn("Warning: msg_count = %d (msg_count == 0 or 5 <= msg_count <= 10)\n", msg_count);
-	}
-
 	return 0;
 }
 
-void print_hello(void)
+void print_hello(int msg_count)
 {
 	int i;
 	struct TimingList *current_tail = tl_head;
@@ -128,9 +118,6 @@ static void __exit hello_exit(void)
 	destroy_list();
 }
 
-module_param(msg_count, uint, 0444);
-MODULE_PARM_DESC(msg_count, "Amount of hello world outputs on load");
-
 EXPORT_SYMBOL(print_hello);
 EXPORT_SYMBOL(destroy_list);
 

hello2.c

@@ -40,9 +40,20 @@ MODULE_AUTHOR("Serhii Popovych <serhii.popovych@globallogic.com>");
 MODULE_DESCRIPTION("Hello, world in Linux Kernel Training");
 MODULE_LICENSE("Dual BSD/GPL");
 
+static unsigned int msg_count = 1;
+
 static int __init hello_init(void)
 {
-	print_hello();
+	if (msg_count > 10) {
+		pr_err("Error: msg_count too large (%d > 10)\n", msg_count);
+		return -EINVAL;
+	}
+
+	if (msg_count == 0 || msg_count >= 5) {
+		pr_warn("Warning: msg_count = %d (msg_count == 0 or 5 <= msg_count <= 10)\n", msg_count);
+	}
+
+	print_hello(msg_count);
 	return 0;
 }
 
@@ -51,5 +62,8 @@ static void __exit hello_exit(void)
 	destroy_list();
 }
 
+module_param(msg_count, uint, 0444);
+MODULE_PARM_DESC(msg_count, "Amount of hello world outputs on load");
+
 module_init(hello_init);
 module_exit(hello_exit);

inc/hello1.h

@@ -1,2 +1,2 @@
-void print_hello(void);
+void print_hello(int);
 void destroy_list(void);

test.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+if [ -z "$1" ]; then
+	echo "Error: no script supplied"
+	echo "Usage: $0 path/to/testing/script"
+	exit 1
+fi
+
+while read l; do
+	if [ -z "$l" ]; then
+		continue;
+	fi;
+
+	echo "$ $l";
+	$($l);
+
+	echo -e ""
+done < $1

tests/lab5-test

@@ -0,0 +1,33 @@
+insmod hello2.ko
+
+insmod hello1.ko
+
+insmod hello2.ko
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=0
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=1
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=3
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=5
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=8
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=10
+rmmod hello2.ko
+
+insmod hello2.ko msg_count=12
+rmmod hello2.ko
+
+insmod hello2.ko
+rmmod hello1.ko
+
+rmmod hello2.ko
+rmmod hello1.ko