From: David van Moolenbroek <david@minix3.org>
Date: Tue, 1 Sep 2015 11:42:03 +0000 (+0000)
Subject: VFS: workaround to allow TIOCSCTTY on PTYs
X-Git-Url: http://zhaoyanbai.com/repos/Bv9ARM.ch10.html?a=commitdiff_plain;h=refs%2Fchanges%2F70%2F3070%2F1;p=minix.git

VFS: workaround to allow TIOCSCTTY on PTYs

Fix /dev/tty-related issues in tmux(1) by hardcoding the PTY major
in VFS in addition to the TTY major.  Even though this is exactly
what we did NOT want to have to do, the actual fix for this issue
is going to take a little longer.

Change-Id: I24c75eaf688b9ebd28e931f2e445b8442cfdac78
---

diff --git a/minix/servers/vfs/device.c b/minix/servers/vfs/device.c
index 454f66554..54a1b0872 100644
--- a/minix/servers/vfs/device.c
+++ b/minix/servers/vfs/device.c
@@ -288,8 +288,9 @@ int cdev_io(
   /* Handle TIOCSCTTY ioctl: set controlling tty.
    * TODO: cleaner implementation work in progress.
    */
-  if (op == CDEV_IOCTL && bytes == TIOCSCTTY && major(dev) == TTY_MAJOR) {
-       fp->fp_tty = dev;
+  if (op == CDEV_IOCTL && bytes == TIOCSCTTY &&
+     (major(dev) == TTY_MAJOR || major(dev) == PTY_MAJOR)) {
+	fp->fp_tty = dev;
   }
 
   /* Create a grant for the buffer provided by the user process. */