Default libkrb5 ccache location

[Florian Weimer]

On 07/30/2013 03:27 AM, Lennart Poettering wrote:

> The same component that creates the temporary directory?
>
> In pseudo code:
>
>     char temp[] = "/tmp/krb.XXXXXX", link[PATH_MAX];
>     char *machine_id, *home;
>
>     mkdtemp(temp);
>     machine_id = get_file_contents("/etc/machine_id");
>     *strchrnul(machined_id, '\n') = 0;
>     home = getenv("HOME);
>     snprintf(link, "%s/.krb-%s", home, machine_id);
>     symlink(temp, link);
>
> Of course, you should skip this if the symlink already exists and points
> to a valid directory...

I'm not sure if this is a supported use case, but the above breaks if 
/home is mounted on multiple machines.

-- 
Florian Weimer / Red Hat Product Security Team