Re: st_size of a symlink

From: Richard Weinberger
Date: Mon Jul 23 2012 - 18:07:49 EST

On 23.07.2012 22:47, Jesper Juhl wrote:
Fix it _how_?

By returning the size as the number of bytes in the name the link is
currently pointing at.

This is not easy.
procfs has no clue where the link pointing at.
The information is generated while accessing the link.
tmpfs on the other hand has this information because symlinks get only changed through tmpfs...

By retrying readlink() with bigger buffer.
With procfs there's just a few more ways the readlink() output can
change, that's all.

Still not a good reason to just return 0 IMHO.

IMHO the lstat() and readlink() manpages have to be more precise about st_size.

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