From: "hadmut (Hadmut Danisch)" Date: 2012-05-12T19:05:39+09:00 Subject: [ruby-core:45009] [ruby-trunk - Bug #6427][Open] ruby ioctl: Error integer 2148012656 too big to convert to `int' Issue #6427 has been reported by hadmut (Hadmut Danisch). ---------------------------------------- Bug #6427: ruby ioctl: Error integer 2148012656 too big to convert to `int' https://bugs.ruby-lang.org/issues/6427 Author: hadmut (Hadmut Danisch) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux] Hi, the upgrade to ubuntu 12.04 came with an upgrade to ruby 1.9.3. Unfortunately, in recent 1.9.3 versions of ruby there's a bug in the ioctl function. E.g. if you want to do getbsz() on a block device and do a f.ioctl(0x80081270,a) you'll get the error message Error integer 2148012656 too big to convert to `int' RangeError (2148012656 = 0x80081270) So ruby can't do ioctl's anymore if the highest bit is set in the ioctl code. This was working code in ruby 1.9.2 / ubuntu 11.10. regards -- http://bugs.ruby-lang.org/