Rebar permission denied when compiling elixir

Questions / Help
,
1

I am trying to install Elixir on a new server. The servers is running Oracle Linux (Redhat) 6. I get the following error:

 [root@inara elixir]# make clean test
cd lib/elixir && "/tmp/elixir/rebar" clean
/bin/sh: /tmp/elixir/rebar: Permission denied
make: *** [clean] Error 126
[root@inara elixir]#
[root@inara elixir]# uname -a
Linux inara 2.6.39-400.290.2.el6uek.x86_64 #1 SMP Fri Nov 18 10:05:15 PST 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@inara elixir]#

I tried compiling with both Erlang 20 and 19. Any suggestions?

Hogi…

2

My first guess is that the file /tmp/elicir/rebar is not executable.

Please use ls -l /tmp/elixir/rebar to check. In the first colum of the output there should be -rwxr-xr-x. If the xs are missing, please use chmod 755 /tmp/elixir/rebar to make it executable.

But may I ask how you got the sources? When pulling from the git-repository or when downloading the tarballs, executable should be set already.

3

Thank you for the reply. I noticed that this image of the VM was using a umask of 0077 which could mess with the permissions. I rebuilt the VM and changed the umask to 022 and tried again. But I’m running into the same issues:

cd /tmp
git clone https://github.com/elixir-lang/elixir.git
cd elixir
make clean test

[root@localhost elixir]# make clean test
cd lib/elixir && "/tmp/elixir/rebar" clean
/bin/sh: /tmp/elixir/rebar: Permission denied
make: *** [clean] Error 126
[root@localhost elixir]#

[root@localhost elixir]# ls -la

drwxr-xr-x. 7 root root   4096 Sep 10 13:39 .
drwxrwxrwt. 4 root root   4096 Sep 10 13:38 ..
-rw-r--r--. 1 root root    373 Sep 10 13:39 .appveyor.yml
drwxr-xr-x. 2 root root   4096 Sep 10 13:39 bin
-rw-r--r--. 1 root root    780 Sep 10 13:39 CHANGELOG.md
-rw-r--r--. 1 root root   3675 Sep 10 13:39 CODE_OF_CONDUCT.md
drwxr-xr-x. 8 root root   4096 Sep 10 13:39 .git
-rw-r--r--. 1 root root     50 Sep 10 13:39 .gitattributes
-rw-r--r--. 1 root root    222 Sep 10 13:39 .gitignore
-rw-r--r--. 1 root root    507 Sep 10 13:39 ISSUE_TEMPLATE.md
drwxr-xr-x. 8 root root   4096 Sep 10 13:39 lib
-rw-r--r--. 1 root root  11343 Sep 10 13:39 LICENSE
-rw-r--r--. 1 root root   9740 Sep 10 13:39 Makefile
drwxr-xr-x. 2 root root   4096 Sep 10 13:39 man
-rw-r--r--. 1 root root    825 Sep 10 13:39 NOTICE
-rw-r--r--. 1 root root   7229 Sep 10 13:39 README.md
-rwxr-xr-x. 1 root root 164740 Sep 10 13:39 rebar
-rwxr-xr-x. 1 root root 530454 Sep 10 13:39 rebar3
-rw-r--r--. 1 root root    674 Sep 10 13:39 rebar.config
-rw-r--r--. 1 root root   1232 Sep 10 13:39 RELEASE.md
drwxr-xr-x. 2 root root   4096 Sep 10 13:39 src
-rw-r--r--. 1 root root    575 Sep 10 13:39 .travis.yml
-rw-r--r--. 1 root root      9 Sep 10 13:39 VERSION
[root@localhost elixir]#

[root@localhost elixir]# erl --version
Erlang/OTP 20 [erts-9.0] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V9.0  (abort with ^G)
1>

[root@localhost elixir]# uname -a
Linux inara 2.6.39-400.290.2.el6uek.x86_64 #1 SMP Fri Nov 18 10:05:15 PST 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost elixir]#

Just for grins and giggles I manually chmod 755 the rebar file but the result is the same. :frowning:

Hogi…

4

Can you run that rebar manually? ./rebar --version?

edit
I had something similar ages ago. Please check if env is available in $PATH, especially when you installed a minimal VM it might be missing… If I’m right here, you might need to find the correct package on your own…

5 
[root@inara elixir]# ./rebar --version
-bash: ./rebar: Permission denied
[root@inara elixir]#

It does appear that the umask of 077 may have been the issue. While I’m still having an error as the root user, even after logging out and back in, I was able to do the following as my users:

cd /tmp
mkdir elixir
cd elixir
wget https://github.com/elixir-lang/elixir/archive/v1.4.5.tar.gz
gunzip v1.4.5.tar.gz
tar -xvf v1.4.5.tar
cd elixir-1.4.5/
make clean test
sudo make install

[jfhogarty@inara tmp]$ iex
Erlang/OTP 20 [erts-9.0] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]

Interactive Elixir (1.4.5) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)>

I continue to have the permissions problems if I clone the repo, either as root or as a user.

6

Ok, first thank you NobbZ as your responses got me thinking in the correct direction. I found the problem which is two fold.

  1. This base VM (which is a standard where I work) had a umask of 0077.
  2. The /tmp directory seems to have some special permissions

The error message had me looking in the wrong direction. I have now been able to, as booth root and a user, download/git clone both 1.4.5 and 1.5.x and compile. What I needed to do was to download/clone the files into a different directory as /tmp permissions were the issue.

Hogi…