dovecot - Feb 2013 - error running indexer-worker as non-root user

Using dovecot-2.1.15 if I run indexer-worker as a non-root user it fails with an
error:
Feb 11 13:06:47 indexer-worker: Error: user foobar: Error reading configuration:
net_connect_unix(/var/run/dovecot/config) failed: Permission denied

This is what I added to 10-master.conf:
service indexer-worker {
  user = _dovecot
}

The wiki says it should work:
<http://wiki2.dovecot.org/Services>
indexer-worker
[...]
	? user=root, but the privileges are (temporarily) dropped to the mail
user's privileges after userdb lookup. If only a single UID is used, user
can be set to the mail UID for higher security, because the process can't
gain root privileges anymore.

And the code says it should work:
<src/indexer/indexer-worker.c>
static void drop_privileges(void) 
{
	[...]
	if (set.uid != 0) {
                /* open config connection before dropping privileges */

Of course the config socket is locked down as it should be:
srw-------  1 root  daemon  0 Feb 11 13:06 /var/run/dovecot/config

Here's where the error comes from:
2   libdovecot.0.dylib                  0x00000001019612a0
master_service_settings_read + 2168
3   libdovecot.0.dylib                  0x000000010196193e
master_service_settings_cache_read + 294
4   libdovecot-storage.0.dylib          0x000000010185d9ad
mail_storage_service_read_settings + 510
5   libdovecot-storage.0.dylib          0x000000010185da5d
mail_storage_service_lookup + 96
6   libdovecot-storage.0.dylib          0x000000010185f06a
mail_storage_service_lookup_next + 42
7   indexer-worker                      0x00000001018101a1
master_connection_input + 335
8   libdovecot.0.dylib                  0x0000000101972455 io_loop_call_io + 46
9   libdovecot.0.dylib                  0x000000010197343e io_loop_handler_run +
214
10  libdovecot.0.dylib                  0x0000000101972600 io_loop_run + 77
11  libdovecot.0.dylib                  0x00000001019601ef master_service_run +
24
12  indexer-worker                      0x000000010180ff17 main + 490
13  libdyld.dylib                       0x00007fff89d2f7b5 start + 1

Is this a bug or am I configuring it incorrectly?  Thanks.

On 11.2.2013, at 21.32, Mike Abbott <michael.abbott at apple.com> wrote:
> Using dovecot-2.1.15 if I run indexer-worker as a non-root user it fails
with an error:
> Feb 11 13:06:47 indexer-worker: Error: user foobar: Error reading
configuration: net_connect_unix(/var/run/dovecot/config) failed: Permission
denied
Well.. http://hg.dovecot.org/dovecot-2.1/rev/6d45b9bd1cff fixes it, although
it's a little bit annoying fix. Now it unnecessarily reads the config at
startup and then keeps the connection open, even if it really doesn't need
to keep it open afterwards. But it is a rather generic problem..

> http://hg.dovecot.org/dovecot-2.1/rev/6d45b9bd1cff fixes it
Yes it does.  Thanks.