Re: [PATCH] Linux-2.5 fix/improve get_pid()

[Jamie Lokier]

Alan Cox wrote:
> If they hold both handles open and stat them and find the same inode
> number then yes its a bug. We have lots of room for inode numbers to
> handle 2^30 processes and allow for 2^30 other files

So, in general, the way to detect hard links requires both objects to be
open at the same time?  I was sure it was enough to stat(), and check
(st1.st_ino == st2.st_ino && st1.st_dev == st2.st_dev).

Admittedly, one of the object could be renamed or deleted in that time
so it's not 100% reliable on changing filesystems.

Ah well.

-- Jamie