[Xen-devel] Re: [Xen-changelog] If the 'cdrom=' option is specified in the definition file but media is

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Xen patchbot -3.0-testing wrote:
> # HG changeset patch
> # User kaf24@xxxxxxxxxxxxxxxxxxxx
> # Node ID fd526926e0d1c0671295aa7f4b952186c9345173
> # Parent  408f51a850f47af4db20f43f281935909d502511
> If the 'cdrom=' option is specified in the definition file but media is 
> not found in the CD drive then main() in vl.c exits and the guest appears 
> to hang.  This patch modifies vl.c slightly to check for the presents of 
> media.  If the cdrom cannot be opened then the cd entry is removed from 
> hd_filename[] and bs_table[] allowing the guest to continue initializing. 
> If the guest requires the CD media then the guest should report, gracefully
> or otherwise, that it's missing.
>
> From: Ross Maxfield <rmaxfiel@xxxxxxxxxx>
>
> Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
>   
Doesn't this need a Signed-off-by: Ross Maxfield <rmaxfiel@xxxxxxxxxx>?

Regards,

Anthony Liguori

> diff -r 408f51a850f4 -r fd526926e0d1 tools/ioemu/vl.c
> --- a/tools/ioemu/vl.c  Mon Apr 10 16:14:36 2006
> +++ b/tools/ioemu/vl.c  Mon Apr 10 16:17:07 2006
> @@ -3243,8 +3243,17 @@
>      /* we always create the cdrom drive, even if no disk is there */
>      bdrv_init();
>      if (has_cdrom) {
> -        bs_table[2] = bdrv_new("cdrom");
> -        bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
> +        int fd;
> +        if ( (fd = open(hd_filename[2], O_RDONLY | O_BINARY)) < 0) {
> +                hd_filename[2]=NULL;
> +                bs_table[2]=NULL;
> +                fprintf(logfile, "Could not open CD %s.\n", hd_filename[i]);
> +        }
> +        else {
> +                close(fd);
> +                bs_table[2] = bdrv_new("cdrom");
> +                bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
> +        }
>      }
>  
>      /* open the virtual block devices */
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