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File 0009-qemu-cvs-ioctl_nodirection.patch of Package qemu
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> --- linux-user/syscall.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index ea8e4dd..f6187ce 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3878,6 +3878,11 @@ static abi_long do_ioctl(int fd, abi_long 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(ioctl(fd, ie->host_cmd, buf_temp)); if (!is_error(ret)) { @@ -3896,6 +3901,7 @@ static abi_long do_ioctl(int fd, abi_long cmd, abi_long arg) unlock_user(argptr, arg, 0); ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); break; +*/ default: case IOC_RW: argptr = lock_user(VERIFY_READ, arg, target_size, 1);