[Libguestfs] [PATCH 4/9] backend: Add a .plugin_name method.

[Richard W.M. Jones]

On Wed, Jan 17, 2018 at 04:14:56PM -0600, Eric Blake wrote:
> On 01/17/2018 02:53 PM, Richard W.M. Jones wrote:
> > This returns the plugin name, which for plugins is the same as the
> > ordinary .name method (but for filters will be different).
> > ---
> 
> Just as .name and .plugin_name can differ for filters, should we also
> have a way to report independent version numbers (via .version) for the
> filter, compared to the version of the underlying plugin (via
> .plugin_version)?

As it currently stands it's not necessary because main.c does:

  if (version) {
    const char *v;
    struct backend *b;

    display_version ();
    for_each_backend (b) {
      printf ("%s", b->name (b));
      if ((v = b->version (b)) != NULL)
        printf (" %s", v);
      printf ("\n");
    }
    exit (EXIT_SUCCESS);
  }

with the output:

$ ./nbdkit --filter offset --filter delay file --version
nbdkit 1.1.26
offset 1.1.26
delay 1.1.26
file 1.1.26

Rich.

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