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Re: [Qemu-devel] [PATCH v23 05/11] ccid: add passthru card device
From: |
Jes Sorensen |
Subject: |
Re: [Qemu-devel] [PATCH v23 05/11] ccid: add passthru card device |
Date: |
Mon, 28 Mar 2011 15:45:12 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110307 Fedora/3.1.9-0.39.b3pre.fc14 Thunderbird/3.1.9 |
On 03/28/11 14:14, Alon Levy wrote:
>>> +static void ccid_card_vscard_send_init(PassthruState *s)
>>> > > +{
>>> > > + VSCMsgInit msg = {
>>> > > + .version = htonl(VSCARD_VERSION),
>>> > > + .magic = VSCARD_MAGIC,
>>> > > + .capabilities = {0}
>>> > > + };
>>> > > +
>> >
>> > If this goes over the wire, don't you need to htonl(VSCARD_MAGIC) here
>> > if someone tries to run passthrough from a big endian system to a little
>> > endian system, or vice versa?
> The VSCARD_MAGIC definition is actually a cast of a string, so it is already
> in the correct byte order:
>
> libcacard/vscard_common.h:#define VSCARD_MAGIC (*(uint32_t *)"VSCD")
>
Ah, I was staring at it for a bit and I wasn't quite sure, which is why
I asked the question. Might be worth adding a comment about it.
Otherwise it is good then, so....
Acked-by: Jes Sorensen <address@hidden>
[Qemu-devel] [PATCH v23 05/11] ccid: add passthru card device, Alon Levy, 2011/03/23
[Qemu-devel] [PATCH v23 02/11] qemu-thread.h: include inttypes.h, Alon Levy, 2011/03/23
[Qemu-devel] [PATCH v23 04/11] introduce libcacard/vscard_common.h, Alon Levy, 2011/03/23
[Qemu-devel] [PATCH v23 03/11] usb-ccid: add CCID bus, Alon Levy, 2011/03/23