[COMPAT]: TUNSETIFF needs to copy back data after ioctl.

Linux Kernel Mailing List <[email protected]> Mon, 14 Feb 2005 22:42:07 +0000

Newsgroups	gmane.linux.kernel.commits.2-4
Message-ID	<[email protected]>

ChangeSet 1.1571.1.2, 2005/02/14 14:42:07-08:00, [email protected]

	[COMPAT]: TUNSETIFF needs to copy back data after ioctl.
	
	It is defined as a _IOW() which is erroneous, it should
	have been defined as _IORW() but that cannot be changed
	now without breaking all existing applications using this
	ioctl.
	
	Signed-off-by: David S. Miller <[email protected]>



 ioctl32.c |    1 +
 1 files changed, 1 insertion(+)


diff -Nru a/arch/sparc64/kernel/ioctl32.c b/arch/sparc64/kernel/ioctl32.c
--- a/arch/sparc64/kernel/ioctl32.c	2005-02-16 14:03:08 -08:00
+++ b/arch/sparc64/kernel/ioctl32.c	2005-02-16 14:03:08 -08:00
@@ -698,6 +698,7 @@
 	set_fs (old_fs);
 	if (!err) {
 		switch (cmd) {
+		case TUNSETIFF:
 		case SIOCGIFFLAGS:
 		case SIOCGIFMETRIC:
 		case SIOCGIFMTU: