From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Supun Nakandala <supun(dot)nakandala(at)gmail(dot)com> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: How to refer to resource files from UDFs written in C |
Date: | 2017-06-09 13:45:05 |
Message-ID: | 24523.1497015905@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Supun Nakandala <supun(dot)nakandala(at)gmail(dot)com> writes:
> However, I have a requirement of reading a text file from one of the C
> functions. The compiled *.so files are placed in the "pg_config
> --pkglibdir" directory and tried copying my text files there but it didn't
> work. I found that, when these shared libs are loaded they are run from a
> different working directory. In this case, what is the best way to refer to
> my text files from the C code other than giving the absolute path which can
> change from system to system.
You probably want to use get_share_path, or one of its sibling functions
in src/port/path.c. Then your files go with the PG installation tree,
whereever it is. There are different functions that are appropriate for
different types of files.
regards, tom lane
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