Heikki Linnakangas 7b55bb892a Fix snapshot reference leak if lo_export fails. ...

If lo_export() fails to open the target file or to write to it, it leaks
the created LargeObjectDesc and its snapshot in the top-transaction
context and resource owner. That's pretty harmless, it's a small leak
after all, but it gives the user a "Snapshot reference leak" warning.

Fix by using a short-lived memory context and no resource owner for
transient LargeObjectDescs that are opened and closed within one function
call. The leak is easiest to reproduce with lo_export() on a directory
that doesn't exist, but in principle the other lo_* functions could also
fail.

Backpatch to all supported versions.

Reported-by: Andrew B
Reviewed-by: Alvaro Herrera
Discussion: https://www.postgresql.org/message-id/32bf767a-2d65-71c4-f170-122f416bab7e@iki.fi

2021-11-03 11:09:08 +02:00

..

inv_api.c

Fix snapshot reference leak if lo_export fails.

2021-11-03 11:09:08 +02:00

Makefile

Remove cvs keywords from all files.

2010-09-20 22:08:53 +02:00