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Add API for 64-bit large object access. Now users can access up to

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4TB large objects (standard 8KB BLCKSZ case).  For this purpose new
libpq API lo_lseek64, lo_tell64 and lo_truncate64 are added.  Also
corresponding new backend functions lo_lseek64, lo_tell64 and
lo_truncate64 are added. inv_api.c is changed to handle 64-bit
offsets.

Patch contributed by Nozomi Anzai (backend side) and Yugo Nagata
(frontend side, docs, regression tests and example program). Reviewed
by Kohei Kaigai. Committed by Tatsuo Ishii with minor editings.
This commit is contained in:
Tatsuo Ishii
2012-10-07 08:36:48 +09:00
parent ae835c7d6e
commit 461ef73f09
16 changed files with 856 additions and 32 deletions
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6
src/interfaces/libpq/libpq-fe.h
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@@ -548,6 +548,12 @@ extern Oid lo_import(PGconn *conn, const char *filename);
extern Oid lo_import_with_oid(PGconn *conn, const char *filename, Oid lobjId);
extern int lo_export(PGconn *conn, Oid lobjId, const char *filename);
#ifdef HAVE_PG_INT64
extern pg_int64 lo_lseek64(PGconn *conn, int fd, pg_int64 offset, int whence);
extern pg_int64 lo_tell64(PGconn *conn, int fd);
extern int lo_truncate64(PGconn *conn, int fd, pg_int64 len);
#endif
/* === in fe-misc.c === */
/* Get the version of the libpq library in use */