Re: Finding hardlinks
From: Mikulas Patocka
Date: Sun Dec 31 2006 - 10:02:59 EST
On Wed, 20 Dec 2006, Al Viro wrote:
On Wed, Dec 20, 2006 at 05:50:11PM +0100, Miklos Szeredi wrote:
I don't see any problems with changing struct kstat. There would be
reservations against changing inode.i_ino though.
So filesystems that have 64bit inodes will need a specialized
getattr() method instead of generic_fillattr().
And they are already free to do so. And no, struct kstat doesn't need
to be changed - it has u64 ino already.
If I return 64-bit values as ino_t, 32-bit programs will get EOVERFLOW on
stat attempt (even if they are not going to use st_ino in any way) --- I
know that POSIX specifies it, but the question is if it is useful.
What is the correct solution? Mount option that can differentiate between
32-bit colliding inode numbers and 64-bit non-colliding inode numbers? Or
is there any better idea.
Given the fact that glibc compiles anything by default with 32-bit ino_t,
I wonder if returning 64-bit inode number is possible at all.
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