Resolv::DNS::getresources throws Errno::EACCES: Permission denied - bind(2) on solaris
we have ruby running on Solaris. sometimes one of our tools fails with exception Errno::EACCES while calling Resolv::DNS::getresources. This only happens one out of thousands of times the tool is used.
After looking into lib/resolv.rb I saw, there is an optimistic loop in bind_random_port(), which looks to me it is thought of the possibility that a unusable port is selected (one that is used by another process), and if that happens it is tried again. Unfortunately it is only done when the exception is Errno::EADDRINUSE, what might be correct in Linux, but not Solaris (Sol10u6).
I propose to add Errno::EACCESS to the raise statement. Maybe a retry count limit as well:
def self.bind_random_port(udpsock, bind_host="0.0.0.0") # :nodoc: begin count += 1 port = rangerand(1024..65535) udpsock.bind(bind_host, port) rescue Errno::EADDRINUSE, Errno::EACCESS => e if count < 10 retry else raise e end end end
Updated by akr (Akira Tanaka) about 8 years ago
- Status changed from Assigned to Closed
- % Done changed from 0 to 100
This issue was solved with changeset r40112.
Frank, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.
- lib/resolv.rb (bind_random_port): Rescue EACCES for SunOS. bind() on SunOS for port 2049 (nfs) and 4045 (lockd) causes EACCES with unprivileged process. cf. PRIV_SYS_NFS in privileges(5) [ruby-core:48064] [Bug #7183] reported by Frank Meier.