Hello all,
I am trying to write an extension in C that returns a simple environment
variable. The code compiles without any complaint or warning, and it
loads fine into the database, however, when I run the function, I get
disconnected from the server.
Here is my C code:
#include <postgres.h>
#include <fmgr.h>
PG_MODULE_MAGIC;
#include <stdio.h>
#include <stdlib.h>
PG_FUNCTION_INFO_V1(pl_masterkey);
text * pl_masterkey(PG_FUNCTION_ARGS)
{ char *e_var = getenv("PGMASTERKEY"); size_t length = VARSIZE(e_var) - VARHDRSZ;
text * mkey = (text *) palloc(length); VARATT_SIZEP(mkey) = length; memcpy(VARDATA(mkey), e_var, length);
return mkey;
}
And here is the SQL I use to create the function in PostgreSQL:
CREATE FUNCTION pl_masterkey() RETURNS text AS 'pl_masterkey', 'pl_masterkey' LANGUAGE C STRICT;
And the results:
select pl_masterkey();
server closed the connection unexpectedly This probably means the server terminated abnormally before or
whileprocessing the request.
The connection to the server was lost. Attempting reset: Failed.
!>
Thanks ahead of time for any and all help.
