Style of file error messages

Just to get an opinion, which is better:

could not open transaction log file "%s": %m
could not open control file "%s": %m
could not open data file "%s": %m
could not open temporary file "%s": %m
could not open whatever file "%s": %m

or just:

could not open file "%s": %m

It seems to me that by the time you get to a file error message of this 
level, the higher-level purpose of the file is pretty irrelevant.  
(Specific exceptions might exist.)  Log analysis tools might also 
prefer a uniform format.

Anyway, some consistency either way would be nice.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/