[et-mgmt-tools] Re: [fedora-virt] RFC: libosinfo: Library for virt OS/distro metadata 3
Richard W.M. Jones
rjones at redhat.com
Mon Jun 15 12:15:06 UTC 2009
On Sun, Jun 14, 2009 at 06:50:02PM -0400, Cole Robinson wrote:
> The public API looks like:
>
> /**
> * Values stored in the OS dictionary
> */
> enum _os_value_type {
> OS_VALUE_NAME = 1, /** Human readable family/distro... name */
> OS_VALUE_MEDIA_INSTALL_URL, /** URL to an install tree */
> };
> typedef enum _os_value_type os_value_t;
>
> int os_init();
> void os_close();
>
> int os_find_families (char ***list);
> int os_find_distros (const char *parent_id, char ***list);
> int os_find_releases (const char *parent_id, char ***list);
> int os_find_updates (const char *parent_id, char ***list);
>
> int os_lookup_value (os_value_t value_type,
> const char *os_id,
> char **value);
There's a (little) overlap and a possible user in virt-inspector.
In virt-inspector we do things the other way around - we look inside
the guest for files like /etc/redhat-release and /etc/debian_version,
and parse those to determine the OS distro and release (also we parse
the registry to do the same for Windows). The code for Linux is here:
http://git.et.redhat.com/?p=libguestfs.git;a=blob;f=inspector/virt-inspector.pl;h=1d8a84b424eb73ceafee041f0e1d76d371506aa7;hb=HEAD#l410
It would be nice for virt-inspector to output ID strings which are
compatible with osinfo.
'Course we'll need Perl bindings. Did you see this?
http://rwmj.wordpress.com/2009/04/20/generating-code/
Rich.
--
Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://et.redhat.com/~rjones/virt-df/
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