qemu/qemu-cvs-ioctl_nodirection.patch

From: Alexander Graf <agraf@suse.de>
Date: Tue, 14 Apr 2009 16:27:36 +0200
Subject: qemu-cvs-ioctl_nodirection

the direction given in the ioctl should be correct so we can assume the
communication is uni-directional. The alsa developers did not like this
concept though and declared ioctls IOC_R and IOC_W even though they were
IOC_RW.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Ulrich Hecht <uli@suse.de>
[BR: minor edits to pass qemu's checkpatch script]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 linux-user/syscall.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 946c1e3a1957ea43368311acecda..894627b9dc8d4f72c06bab90aa9b 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5346,6 +5346,13 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg)
         arg_type++;
         target_size = thunk_type_size(arg_type, 0);
         switch(ie->access) {
+        /*
+         *  FIXME: actually the direction given in the ioctl should be
+         * correct so we can assume the communication is uni-directional.
+         * The alsa developers did not like this concept though and
+         * declared ioctls IOC_R and IOC_W even though they were IOC_RW.
+         */
+/*
         case IOC_R:
             ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
             if (!is_error(ret)) {
@@ -5364,6 +5371,7 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg)
             unlock_user(argptr, arg, 0);
             ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
             break;
+*/
         default:
         case IOC_RW:
             argptr = lock_user(VERIFY_READ, arg, target_size, 1);