Messages in this thread | | | Date | Wed, 3 Jan 2007 20:17:34 +0100 (CET) | From | Mikulas Patocka <> | Subject | Re: Finding hardlinks |
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On Wed, 3 Jan 2007, Frank van Maarseveen wrote:
> On Tue, Jan 02, 2007 at 01:04:06AM +0100, Mikulas Patocka wrote: >> >> I didn't hardlink directories, I just patched stat, lstat and fstat to >> always return st_ino == 0 --- and I've seen those failures. These failures >> are going to happen on non-POSIX filesystems in real world too, very >> rarely. > > I don't want to spoil your day but testing with st_ino==0 is a bad choice > because it is a special number. Anyway, one can only find breakage, > not prove that all the other programs handle this correctly so this is > kind of pointless. > > On any decent filesystem st_ino should uniquely identify an object and > reliably provide hardlink information. The UNIX world has relied upon this > for decades. A filesystem with st_ino collisions without being hardlinked > (or the other way around) needs a fix.
... and that's the problem --- the UNIX world specified something that isn't implementable in real world.
You can take a closed box and say "this is POSIX cerified" --- but how useful such box could be, if you can't access CDs, diskettes and USB sticks with it?
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