diff options
Diffstat (limited to 'src/backend/libpq/be-fsstubs.c')
| -rw-r--r-- | src/backend/libpq/be-fsstubs.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/src/backend/libpq/be-fsstubs.c b/src/backend/libpq/be-fsstubs.c index 80eddc2821b..8875155129d 100644 --- a/src/backend/libpq/be-fsstubs.c +++ b/src/backend/libpq/be-fsstubs.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/libpq/be-fsstubs.c,v 1.85 2007/02/27 23:48:07 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/libpq/be-fsstubs.c,v 1.86 2007/03/03 19:52:46 momjian Exp $ * * NOTES * This should be moved to a more appropriate place. It is here @@ -120,12 +120,10 @@ lo_close(PG_FUNCTION_ARGS) int32 fd = PG_GETARG_INT32(0); if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) - { ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("invalid large-object descriptor: %d", fd))); - PG_RETURN_INT32(-1); - } + #if FSDB elog(DEBUG4, "lo_close(%d)", fd); #endif @@ -152,12 +150,9 @@ lo_read(int fd, char *buf, int len) int status; if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) - { ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("invalid large-object descriptor: %d", fd))); - return -1; - } status = inv_read(cookies[fd], buf, len); @@ -170,12 +165,9 @@ lo_write(int fd, const char *buf, int len) int status; if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) - { ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("invalid large-object descriptor: %d", fd))); - return -1; - } if ((cookies[fd]->flags & IFS_WRLOCK) == 0) ereport(ERROR, @@ -198,12 +190,9 @@ lo_lseek(PG_FUNCTION_ARGS) int status; if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) - { ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("invalid large-object descriptor: %d", fd))); - PG_RETURN_INT32(-1); - } status = inv_seek(cookies[fd], offset, whence); @@ -248,12 +237,9 @@ lo_tell(PG_FUNCTION_ARGS) int32 fd = PG_GETARG_INT32(0); if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) - { ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("invalid large-object descriptor: %d", fd))); - PG_RETURN_INT32(-1); - } PG_RETURN_INT32(inv_tell(cookies[fd])); } @@ -468,6 +454,26 @@ lo_export(PG_FUNCTION_ARGS) } /* + * lo_truncate - + * truncate a large object to a specified length + */ +Datum +lo_truncate(PG_FUNCTION_ARGS) +{ + int32 fd = PG_GETARG_INT32(0); + int32 len = PG_GETARG_INT32(1); + + if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("invalid large-object descriptor: %d", fd))); + + inv_truncate(cookies[fd], len); + + PG_RETURN_INT32(0); +} + +/* * AtEOXact_LargeObject - * prepares large objects for transaction commit */ |