add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/tty/n_tracerouter.c
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@@ -118,7 +118,9 @@
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  *	 -EINVAL
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  */
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 static ssize_t n_tracerouter_read(struct tty_struct *tty, struct file *file,
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-				  unsigned char __user *buf, size_t nr) {
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+				  unsigned char *buf, size_t nr,
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+				  void **cookie, unsigned long offset)
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+{
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 	return -EINVAL;
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 }
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