Date: Fri, 19 Dec 2014 14:21:01 +0100 (MET) From: Christian Corti <corticn@informatik.uni-stuttgart.de> To: freebsd-stable@freebsd.org Subject: New bug with O_CREAT|O_EXCL and NFS? Message-ID: <alpine.SUN.2.02.1412191411020.16105@azu.informatik.uni-stuttgart.de>
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I've had big headaches finding the problem why "ssh -X host" destroys the permissions of the .Xauthority file in my NFS home directory. 'host' is any of our FreeBSD 10.1-RELEASE servers (sparc64 and amd64) Permissions before login: 0600 Permissions after login: 0000 (ouch!) I've found out that the cause for this lies in the Xau library (AuLock.c) that creates a new file in XauLockAuth: [...] creat_fd = open (creat_name, O_WRONLY | O_CREAT | O_EXCL, 0600); [...] Wrote a small test program that makes just that open call, and the result is the same: the created file has permission 0000. This must be a regression, since I have a FreeBSD 9.0-RELEASE-p4 system (amd64) that does *not* have this problem. Is this a known problem? Any hints on solving that problem? For now, I must add a custom /etc/ssh/sshrc file with "chmod 600 ~/.Xauthority". Christian
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