Re: [PATCH] tty: Fix TIOCGPTPEER ioctl definition

From: Aleksa Sarai
Date: Tue Jul 11 2017 - 10:45:58 EST

Sent: 11 July 2017 01:12
This ioctl does nothing to justify an _IOC_READ or _IOC_WRITE flag
because it doesn't copy anything from/to userspace to access the

Fixes: 54ebbfb1 ("tty: add TIOCGPTPEER ioctl")
-#define TIOCGPTPEER _IOR('T', 0x41, int) /* Safely open the slave */
+#define TIOCGPTPEER _IO('T', 0x41) /* Safely open the slave */

This is a user API change. When was the ioctl added?

It was just pulled this merge window (4.13-rc1).

% git tag --contains 54ebbfb1603415d9953c150535850d30609ef077

Aleksa Sarai
Software Engineer (Containers)
SUSE Linux GmbH
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