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Reserve the "pg_" namespace for roles

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This will prevent users from creating roles which begin with "pg_" and
will check for those roles before allowing an upgrade using pg_upgrade.

This will allow for default roles to be provided at initdb time.

Reviews by José Luis Tallón and Robert Haas
This commit is contained in:
Stephen Frost
2016-04-08 16:56:27 -04:00
parent fa6075e551
commit 293007898d
21 changed files with 226 additions and 13 deletions
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3
src/backend/commands/variable.c
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@ -854,6 +854,9 @@ check_role(char **newval, void **extra, GucSource source)
roleid = InvalidOid;
is_superuser = false;
}
/* Do not allow setting role to a reserved role. */
else if (strncmp(*newval, "pg_", 3) == 0)
return false;
else
{
if (!IsTransactionState())