[PATCH] Disable AF_UNIX handshake with setsockopt(..., SO_PEERCRED, ...)

Christian Franke Christian.Franke@t-online.de
Thu Sep 25 12:40:00 GMT 2014

This is a workaround for this problem which blocks ITP postfix:

With the patch, this disables the secret+cred handshakes of the AF_UNIX 

int sd = socket(AF_UNIX, SOCK_STREAM, 0);

setsockopt(sd, SOL_SOCKET, SO_PEERCRED, NULL, 0);

Postfix works if socket() calls are replaced by the above.

Calls of getsockopt(..., SO_PEERCRED, ...) and getpeereid() would fail with ENOTSUP then. These are not used by postfix.


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