add new tests

lab6/pipe_tester.cpp

@@ -8,7 +8,16 @@ void writer() {
     std::osyncstream(std::cout) << "Writer started" << std::endl;
     
     std::ofstream pipe_write("/dev/wendy_in");
-    pipe_write << "Hello from the other side\n";
+    if (!pipe_write.is_open()) {
+        std::cerr << "Cannot open pipe in" << std::endl;
+    }
+
+    std::ifstream txt("./make.txt");
+    if (!txt.is_open()) {
+        std::cerr << "Canno open make.txt" << std::endl;
+    }
+    // pipe_write << "Hello from the other side\n";
+    pipe_write << txt.rdbuf();
     std::osyncstream(std::cout) << "Writer ended" << std::endl;
 }
 

lab6/wendy_mod/wendy.c

@@ -7,6 +7,7 @@
 // https://linux-kernel-labs.github.io/refs/heads/master/labs/device_drivers.html
 // https://olegkutkov.me/2018/03/14/simple-linux-character-device-driver/
 
+// BEGIN_LST_DEF
 #define MYPIPE_BUFFER_SIZE 4096
 #define MYPIPE_DEVICE_NAME "wendy"
 
@@ -41,7 +42,9 @@ static DEFINE_MUTEX(isactive_lock);
 // writing/ reading
 static DECLARE_WAIT_QUEUE_HEAD(read_queue);
 static DECLARE_WAIT_QUEUE_HEAD(write_queue);
+// END_LST_DEF
 
+// BEGIN_LST_OPEN_RELASE
 static int mypipe_open(struct inode *inode, struct file *file) {
     int minor = iminor(inode);
     printk(KERN_INFO "%s opened, minor = %d", MYPIPE_DEVICE_NAME, minor);
@@ -75,6 +78,9 @@ static int mypipe_release(struct inode *inode, struct file *file) {
     return 0;
 }
 
+// END_LST_OPEN_RELEASE
+
+// BEGIN_LST_READ_WRITE
 static ssize_t mypipe_read(struct file *filep, char __user *buf, size_t size,
                            loff_t *offset) {
     ssize_t ret = 0;
@@ -199,11 +205,15 @@ out:
     return ret;
 }
 
+// END_LST_READ_WRITE
+
+// BEGIN_LST_FOP
 const struct file_operations mypipe_fops = {.owner = THIS_MODULE,
                                             .open = mypipe_open,
                                             .read = mypipe_read,
                                             .write = mypipe_write,
                                             .release = mypipe_release};
+// END_LST_FOP
 
 // Used to set the permission to allow any user to r/w
 static int mypipe_uevent(const struct device *dev,
@@ -212,6 +222,7 @@ static int mypipe_uevent(const struct device *dev,
     return 0;
 }
 
+// BEGIN_LST_INIT
 static int __init mypipe_init(void) {
     int ret;
     dev_t dev;
@@ -277,5 +288,6 @@ static void __exit mypipe_destroy(void) {
 
 module_init(mypipe_init);
 module_exit(mypipe_destroy);
+// END_LST_INIT
 
 MODULE_LICENSE("GPL");