Created attachment 589593 [details]
Configure environment from command line

Description of problem:

Using mock + scm under RHEL5 with EPEL, it is impossible to pass environment variable SSH_AUTH_SOCK to scm command execution environment. Solution of bug 803217 is not working because usermode package in RHEL5 is too old to understand KEEP_ENV_VARS option.

Version-Release number of selected component (if applicable):

mock-1.0.29-1.el5
usermode-1.88-3.el5.2

How reproducible:

Steps to Reproduce:
1. Configure SVN using SSH:
...
config_opts['scm_opts']['method'] = 'svn'
config_opts['scm_opts']['svn_get'] = "svn co svn+ssh://svn/svnroot/SCM_PKG"
...
2. Ensure SSH_AUTH_SOCK is set and connection to svn host can be established:
$ echo "$SSH_AUTH_SOCK"
/tmp/ssh-jlTbf12545/agent.12545
$ ssh svn pwd
/home/max
3. start mock
$ mock -v --scm-enable
DEBUG: Initializing SCM integration...
DEBUG: SCM checkout command: 
svn co svn+ssh://svn/svnroot/package

DEBUG: SCM checkout post command: None
DEBUG: SCM checkout directory: /tmp/tmpKX0Mm-.mock-scm.package
DEBUG: Executing command: ['svn co svn+ssh://svn/svnroot/package'] with env {'LANG': 'en_US.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/bash', 'CVS_RSH': 'ssh', 'PROMPT_COMMAND': 'echo -n "<mock-chroot>"', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'HOME': '/home/max', 'HOSTNAME': 'mock', 'SSH_AUTH_SOCK': '/home/max/.ssh/auth_sock'}
DEBUG: svn: To better debug SSH connection problems, remove the -q option from 'ssh' in the [tunnels] section of your Subversion configuration file.
DEBUG: svn: Network connection closed unexpectedly
DEBUG: Child returncode was: 1
ERROR: Command failed. See logs for output.
 # ['svn co svn+ssh://svn/svnroot/package']

  
Actual results:

Command environment includes 'SSH_AUTH_SOCK': '/home/max/.ssh/auth_sock'

Expected results:

'SSH_AUTH_SOCK': '/tmp/ssh-jlTbf12545/agent.12545'

Additional info:

Attached patch to add an ability to configure environment variables using command-line switch --environment. The main use case is to pass SSH_AUTH_SOCK value when usermode package is too old to understand KEEP_ENV_VARS option: --environment SSH_AUTH_SOCK=$SSH_AUTH_SOCK