Re: [Qemu-devel] [PATCH 4/5] scsi-disk: Mask out serial number EVPD

[Paolo Bonzini <pbonzini@redhat.com>]

On 07/05/2011 01:03 PM, Hannes Reinecke wrote:
> If the serial number is not set we should mask it out in the
> list of supported VPD pages and mark it as not supported.
>
> Signed-off-by: Hannes Reinecke<hare@suse.de>
> ---
>   hw/scsi-disk.c |   15 ++++++++++++---
>   1 files changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
> index 5804662..05d14ab 100644
> --- a/hw/scsi-disk.c
> +++ b/hw/scsi-disk.c
> @@ -398,7 +398,8 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
>                       "buffer size %zd\n", req->cmd.xfer);
>               pages = buflen++;
>               outbuf[buflen++] = 0x00; // list of supported pages (this page)
> -            outbuf[buflen++] = 0x80; // unit serial number
> +            if (s->serial)
> +                outbuf[buflen++] = 0x80; // unit serial number
>               outbuf[buflen++] = 0x83; // device identification
>               if (s->drive_kind == SCSI_HD) {
>                   outbuf[buflen++] = 0xb0; // block limits
> @@ -409,8 +410,14 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
>           }
>           case 0x80: /* Device serial number, optional */
>           {
> -            int l = strlen(s->serial);
> +            int l;
>
> +            if (!s->serial) {
> +                DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
> +                return -1;
> +            }
> +
> +            l = strlen(s->serial);
>               if (l>  req->cmd.xfer)
>                   l = req->cmd.xfer;
>               if (l>  20)
> @@ -1203,7 +1210,9 @@ static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
>       if (!s->serial) {
>           /* try to fall back to value set with legacy -drive serial=... */
>           dinfo = drive_get_by_blockdev(s->bs);
> -        s->serial = qemu_strdup(*dinfo->serial ? dinfo->serial : "0");
> +        if (*dinfo->serial) {
> +            s->serial = qemu_strdup(dinfo->serial);
> +        }
>       }
>
>       if (!s->version) {

Acked-by: Paolo Bonzini <pbonzini@redhat.com>

Paolo