Eric Davies <Eric@barrodale.com> writes:
> Now I'm trying to make the functions transaction safe. In theory, all
> I need to do is convert my libpq calls to equivalent SPI calls.
> However, there don't appear to be any SPI equivalents for the large
> object functions like lo_write and lo_read.

What do you need SPI for? Call the functions directly. See
src/include/libpq/be-fsstubs.h
src/backend/libpq/be-fsstubs.c

regards, tom lane

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