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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-09 16:35:19 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-09 16:35:19 +0000 |
| commit | 68909e70f757d34cfa53bb5fa315529b1c8c7b58 (patch) | |
| tree | b030c9ce6ee834e5c13d58c05bb46b58cce330a1 /src | |
| parent | 433ba2dd560141dd3415ab7e2ddedb23b48c2024 (diff) | |
| download | postgresql-68909e70f757d34cfa53bb5fa315529b1c8c7b58.tar.gz postgresql-68909e70f757d34cfa53bb5fa315529b1c8c7b58.zip | |
Fix overly tense optimization of PLpgSQL_func_hashkey: we must represent
the isTrigger state explicitly, not rely on nonzero-ness of trigrelOid
to indicate trigger-hood, because trigrelOid will be left zero when compiling
for validation. The (useless) function hash entry built by the validator
was able to match an ordinary non-trigger call later in the same session,
thereby bypassing the check that is supposed to prevent such a call.
Per report from Alvaro.
It might be worth suppressing the useless hash entry altogether, but
that's a bigger change than I want to consider back-patching.
Back-patch to 8.0. 7.4 doesn't have the problem because it doesn't
have validation mode.
Diffstat (limited to 'src')
| -rw-r--r-- | src/pl/plpgsql/src/pl_comp.c | 7 | ||||
| -rw-r--r-- | src/pl/plpgsql/src/plpgsql.h | 6 |
2 files changed, 10 insertions, 3 deletions
diff --git a/src/pl/plpgsql/src/pl_comp.c b/src/pl/plpgsql/src/pl_comp.c index 2352c1c1365..840aac0544b 100644 --- a/src/pl/plpgsql/src/pl_comp.c +++ b/src/pl/plpgsql/src/pl_comp.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.108.2.2 2007/02/08 18:37:38 tgl Exp $ + * $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.108.2.3 2008/10/09 16:35:19 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1965,12 +1965,15 @@ compute_function_hashkey(FunctionCallInfo fcinfo, /* get function OID */ hashkey->funcOid = fcinfo->flinfo->fn_oid; + /* get call context */ + hashkey->isTrigger = CALLED_AS_TRIGGER(fcinfo); + /* * if trigger, get relation OID. In validation mode we do not know what * relation is intended to be used, so we leave trigrelOid zero; the hash * entry built in this case will never really be used. */ - if (CALLED_AS_TRIGGER(fcinfo) && !forValidator) + if (hashkey->isTrigger && !forValidator) { TriggerData *trigdata = (TriggerData *) fcinfo->context; diff --git a/src/pl/plpgsql/src/plpgsql.h b/src/pl/plpgsql/src/plpgsql.h index b8bad2b1dee..c301d5c22db 100644 --- a/src/pl/plpgsql/src/plpgsql.h +++ b/src/pl/plpgsql/src/plpgsql.h @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/pl/plpgsql/src/plpgsql.h,v 1.81.2.2 2007/01/30 22:05:20 tgl Exp $ + * $PostgreSQL: pgsql/src/pl/plpgsql/src/plpgsql.h,v 1.81.2.3 2008/10/09 16:35:19 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -526,6 +526,10 @@ typedef struct PLpgSQL_func_hashkey { /* Hash lookup key for functions */ Oid funcOid; + bool isTrigger; /* true if called as a trigger */ + + /* be careful that pad bytes in this struct get zeroed! */ + /* * For a trigger function, the OID of the relation triggered on is part of * the hashkey --- we want to compile the trigger separately for each |