Martin Lucina writes ("[PATCH v2] xenconsole: Ensure exclusive access to
console using locks"):
> If more than one instance of xenconsole is run against the same DOMID
> then each instance will only get some data. This change ensures
> exclusive access to the console by obtaining an exclusive lock on
> <XEN_LOCK_DIR>/xenconsole.<DOMID>.
...
> +static void console_unlock(void)
> +{
> + if (lockfile[0])
> + unlink(lockfile);
> + if (lockfd != -1)
> + close(lockfd);
> +}
If called when unlocked this could unlink the lockfile anyway.
Ian.
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