[PATCH] re-add TIOCSTART and TIOCSTOP compat_ioctl handlers

We don't implement these ioctls, but some architectures define them in the
headers.  Bash picks them up and issues them frequently.  Add compat_ioctl
handlers to silence warnings about unhandled copat ioctls.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 4909754ea84a..71c9d45c0624 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -3051,6 +3051,16 @@ HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl)
 COMPATIBLE_IOCTL(TIOCGLTC)
 COMPATIBLE_IOCTL(TIOCSLTC)
 #endif
+#ifdef TIOCSTART
+/*
+ * For these two we have defintions in ioctls.h and/or termios.h on
+ * some architectures but no actual implemention.  Some applications
+ * like bash call them if they are defined in the headers, so we provide
+ * entries here to avoid syslog message spew.
+ */
+COMPATIBLE_IOCTL(TIOCSTART)
+COMPATIBLE_IOCTL(TIOCSTOP)
+#endif
 /* Usbdevfs */
 HANDLE_IOCTL(USBDEVFS_CONTROL32, do_usbdevfs_control)
 HANDLE_IOCTL(USBDEVFS_BULK32, do_usbdevfs_bulk)