Options upload_path and fileupload_url are ignored in function wp_upload_dir in multisite

[jottlieb]

I've noticed, that the options upload_path and fileupload_url are ignored in the function wp_upload_dir when multisite is activated and the function is used in sub blogs.

So, every time wp_upload_dir is used (e.g. in manage media) the stored options a ignored and default sub blog uploads folder is forced.

This causes problems in special applications (e.g. sitewide attachments).

[jottlieb]

And another question is:
Why uses wp_get_attachment_url() the function wp_upload_dir() and not the guid-field or _wp_attached_file-field?

[scribu]

You can filter the values returned by wp_upload_dir() as needed.