How to get prop path for SVN_WC_THIS_DIR?

Hi!
I am working to make svn_wc_revert2() loggy. For write log file I need
get relative path for dir-props files. I use function
svn_wc__prop_path(), but if I pass SVN_WC_THIS_DIR as path it returns
prop path for file property instead for dir-props, but it works with
full directory path. Problem occurs when svn_wc__prop_path() calls
svn_wc_entry() and didn't find entry for SVN_WC_THIS_DIR. I see two
ways how this should be fixed:
1. Teach svn_wc_entry to handle SVN_WC_THIS_DIR argument as edge case
and return entry for adm_access itself.
2. Teach svn_wc__adm_retrieve_internal handle SVN_WC_THIS_DIR
situation and return associated adm_acces.

Ideas?

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Ivan Zhakov