On Sun, Sep 14, 2014 at 11:02 AM, Edward Ned Harvey (lopser) <lop...@nedharvey.com> wrote: > So the only point in question is whether or not "." and ".." are permitted > filenames in extfs. I think we all know the answer to this question. They > are reserved, so if we want to get semantic, we could say they are > technically permitted, but disallowed for any purposes in user space other > than read.
In ext3/4 (and UFS and all previous Unix file systems) there is a common misconception that "." and ".." are magic. They are not. They are simply directory entries with hardlinks set up in a way that give the expected behavior. Again, I haven't used btrfs but I'm guessing that this is this is the same: they're just regular directory entries that the mkdir() system call creates any time it creates a new directory. Tom -- Email: t...@whatexit.org Work: tlimonce...@stackoverflow.com Skype: YesThatTom Blog: http://EverythingSysadmin.com _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
