rvm/gem-wrappers

Exception Errno::EPERM on wrappers when installing gem via multi-user RVM

Closed this issue · 4 comments

jasonnoble commented

We have a bunch of Ubuntu 10.04 LTS boxes that have multi-user RVM installed (/usr/local/rvm).

We've recently started seeing errors when installing gems, the errors look like the following:

Exception `Errno::EPERM' at /usr/local/rvm/gems/ruby-2.1.0@global/gems/gem-wrappers-1.2.1/lib/gem-wrappers/installer.rb:39 - Operation not permitted @ chmod_internal - /usr/local/rvm/gems/ruby-2.1.0@rails3.2/wrappers/chef-client
ERROR:  While executing gem ... (Errno::EPERM)
    Operation not permitted @ chmod_internal - /usr/local/rvm/gems/ruby-2.1.0@rails3.2/wrappers/chef-client

RVM: 1.25.10
gem-wrappers: 1.2.1

We're attempting to install the chef gem as the deploy user:
$ id
uid=1001(deploy) gid=1001(deploy) groups=111(admin),1001(deploy),1002(rvm)
$

The files in /usr/local/rvm/gems/ruby-2.1.0@rails3.2/wrappers/ are owned by root:rvm, 755 with SGID:
$ ls -al /usr/local/rvm/gems/ruby-2.1.0@rails3.2/wrappers/

total 84
drwsrwsr-x  2 root rvm 4096 2013-12-30 18:02 .
drwxrwsr-x 10 root rvm 4096 2013-12-30 21:25 ..
-rwxrwxr-x  1 root rvm  297 2013-12-30 21:25 bundle
-rwxrwxr-x  1 root rvm  298 2013-12-30 18:00 bundler
-rwxrwxr-x  1 root rvm  302 2013-12-30 22:13 chef-client
-rwxrwxr-x  1 root rvm  300 2013-12-30 21:55 chef-solo
-rwxrwxr-x  1 root rvm  294 2013-12-30 21:55 erb
-rwxrwxr-x  1 root rvm  297 2013-12-30 18:02 erubis
-rwxrwxr-x  1 root rvm  319 2013-12-30 18:00 executable-hooks-uninstaller
-rwxrwxr-x  1 root rvm  294 2013-12-30 21:55 gem
-rwxrwxr-x  1 root rvm  294 2013-12-30 21:55 irb
-rwxrwxr-x  1 root rvm  296 2013-12-30 21:55 knife
-rwxrwxr-x  1 root rvm  295 2013-12-30 18:02 ohai
-rwxrwxr-x  1 root rvm  295 2013-12-30 18:00 rake
-rwxrwxr-x  1 root rvm  295 2013-12-30 21:55 rdoc
-rwxrwxr-x  1 root rvm  301 2013-12-30 18:02 restclient
-rwxr-xr-x  1 root rvm  293 2013-12-30 21:55 ri
-rwxrwxr-x  1 root rvm  295 2013-12-30 21:55 ruby
-rwxrwxr-x  1 root rvm  295 2013-12-30 21:55 shef
-rwxrwxr-x  1 root rvm  297 2013-12-30 21:55 testrb
-rwxrwxr-x  1 root rvm  293 2013-12-30 18:02 tt

Further details: https://gist.github.com/jasonnoble/f9b2bb31071a9f78f59a

jasonnoble commented

Proposed fix:

lib/gem-wrappers/installer.rb
39c39,43
<       File.chmod(0755, file_name)
---
>       begin
>           File.chmod(0755, file_name)
>       rescue Errno::EPERM
>         puts "Nothing to see here"
>       end

This is a proof of concept, so maybe a better rescue message would be to print a warning if the wrapper was not already 755? Expected #{file_name} to be 0755, but was ....

jasonnoble commented

Another suggestion would be something similar to the warnings you get when running rvm get stable:

Found 73 files with mode different then '664' or '775',
use --debug to see the list, run rvmsudo rvm get stable to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.

mpapis commented

released 1.2.2 please test with it

jasonnoble commented

RVM 1.25.11 and gem-wrappers 1.2.2 fixed the issue for us. Thanks for the quick turn around Michal!