Merge pull request #326 from minhsun-c/chardev-write

jserv · web-flow · commit 7a9112bf56fd · 2025-07-27T12:51:31.000+08:00
Clarify write usage in comment for /dev/chardev
diff --git a/examples/chardev.c b/examples/chardev.c
@@ -152,7 +152,7 @@ static ssize_t device_read(struct file *filp, /* see include/linux/fs.h   */
     return bytes_read;
 }
 
-/* Called when a process writes to dev file: echo "hi" > /dev/hello */
+/* Called when a process writes to dev file: echo "hi" | sudo tee /dev/chardev */
 static ssize_t device_write(struct file *filp, const char __user *buff,
                             size_t len, loff_t *off)
 {

Original file line number	Diff line number	Diff line change
`@@ -152,7 +152,7 @@ static ssize_t device_read(struct file filp, / see include/linux/fs.h */`
`152`	`152`	`return bytes_read;`
`153`	`153`	`}`
`154`	`154`
`155`		`-/* Called when a process writes to dev file: echo "hi" > /dev/hello */`
	`155`	`+/* Called when a process writes to dev file: echo "hi" \| sudo tee /dev/chardev */`
`156`	`156`	`static ssize_t device_write(struct file filp, const char __user buff,`
`157`	`157`	`size_t len, loff_t *off)`
`158`	`158`	`{`