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Prevent pg_enable/disable_data_checksums() on standby

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These functions missed a RecoveryInProgress() check, allowing them to
be called on a hot standby.  Enabling, or disabling, checksums on the
standby only would cause the cluster to get out of sync and replaying
checksum transitions to fail.

Author: Satyanarayana Narlapuram <satyanarlapuram@gmail.com>
Reviewed-by: Ayush Tiwari <ayushtiwari.slg01@gmail.com>
Reviewed-by: Tomas Vondra <tomas@vondra.me>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CAHg+QDfRk4-S7DMmdbXJnQ-xF=sUpMAKuh8b83ObLqYVKx5QLA@mail.gmail.com
This commit is contained in:
Daniel Gustafsson 2026-04-30 13:41:41 +02:00
parent 2bf6c9ff71
commit b120358c61
1 changed files with 4 additions and 0 deletions
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4
src/backend/postmaster/datachecksum_state.c
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@ -487,6 +487,8 @@ AbsorbDataChecksumsBarrier(ProcSignalBarrierType barrier)
Datum
disable_data_checksums(PG_FUNCTION_ARGS)
{
PreventCommandDuringRecovery("pg_disable_data_checksums()");
if (!superuser())
ereport(ERROR,
errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
@ -507,6 +509,8 @@ enable_data_checksums(PG_FUNCTION_ARGS)
int cost_delay = PG_GETARG_INT32(0);
int cost_limit = PG_GETARG_INT32(1);
PreventCommandDuringRecovery("pg_enable_data_checksums()");
if (!superuser())
ereport(ERROR,
errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),