On Sun, 20 Feb 2005, Igor Shmukler wrote: > I was wondering if anyone has figured a way to make vn_fullpath() > reliable?
It depends a lot on the requirements. There are some nasty edge cases where the process of determining a name for an object can be quite expensive. Here's one of them: ln /usr/local/etc/apache/httpd.conf /usr/local/etc/apache.old/httpd.conf reboot apachectl start rm /usr/local/etc/apache/httpd.conf Now generate the name of the file that Apache has open. Note that you can't just look in the name cache, because the object has a name but the name used to open the object has been invalidated. And UFS even knows it has a name, because the link count remains non-zero when the unlink of one of the names occurs -- but the only way it can find the other name is to search the file system. So the first thing to do is to decied what your requirements are: are you willing to fail in the edge cases like the above? If so, life is a lot easier :-). Robert N M Watson _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
