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Protect pg_stat_reset_shared() against NULL input

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Per bug #6082, reported by Steve Haslam
This commit is contained in:
Magnus Hagander 2011-06-29 19:35:11 +02:00
parent 21f1e15aaf
commit 79aa44536f
1 changed files with 10 additions and 2 deletions
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12
src/backend/utils/adt/pgstatfuncs.c
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@ -1537,9 +1537,17 @@ pg_stat_reset(PG_FUNCTION_ARGS)
Datum Datum
pg_stat_reset_shared(PG_FUNCTION_ARGS) pg_stat_reset_shared(PG_FUNCTION_ARGS)
{ {
char *target = text_to_cstring(PG_GETARG_TEXT_PP(0)); if (PG_ARGISNULL(0))
/*
* Same error message as in pgstat_reset_shared_counters(),
* to keep translations the same.
*/
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("unrecognized reset target: \"%s\"", "null"),
errhint("Target must be \"bgwriter\".")));
pgstat_reset_shared_counters(target); pgstat_reset_shared_counters(text_to_cstring(PG_GETARG_TEXT_PP(0)));
PG_RETURN_VOID(); PG_RETURN_VOID();
} }