open(/var/dcc/map): Permission denied

Vernon Schryver
Mon Sep 19 16:10:59 UTC 2011

> From: "Aldo Necci" <>

> does anyone know why the following would appear in the logs:
> dccproc[2304]: open(/var/dcc/map): Permission denied

The /var/dcc/map file must be private and readable only by owner,
because it can contain client-IDs and passwords for accessing private
DCC servers.  (The anonmous client-ID of 1 does not use a password.)

`make install` installs dccproc set-UID to the UID specified with
`./configure --with-uid=UID`  The default UID is 0 or root.

It is quite possible that running /var/dcc/libexec/updatedcc
would fix the problem.  Configure builds updatedcc with the
./configure parameters including with-uid.
After fetching the tarball, updatedcc uses `./configure` and `make
install` to `chown` and so forth.
Updatedcc checks to see if it needs to be run by root so that `make`
can `chown` and so forth.

/var/dcc/dcc_conf-new is also built by updatedcc,
and can usually be installed as /var/dcc/dcc_conf

Vernon Schryver

More information about the DCC mailing list

Contact by mail or use the form.