UGE configured to dynamically allocate a GID when submitting a job

[sylabskeith-zz]

Version of Singularity

2.4.2

Expected behavior

Proper allocation of dynamic GID during job submission to UGE

###Actual Behavior

We are getting ENOENT errno on the following line of code:
https://github.com/singularityware/singularity/blob/2.4.2/src/lib/runtime/files/group/group.c#L147

Steps to reproduce behavior

Some reference to UGE:
http://gridengine.eu/grid-engine-internals

[markeganfuller]

Running singularity on our local cluster which uses UGE just results in the following for the UGE job group:

VERBOSE [U=2361,P=12042]   singularity_runtime_files_group()         Skipping GID 20105 as group entry does not exist.

[dtrudg]

Looks like ENOENT needs to be handled as a possible 'group not found' see:

man 3 getgrgid

0 or ENOENT or ESRCH or EBADF or EPERM or ...
The given name or gid was not found.

[dtrudg]

@sylabskeith - is it possible to test PR #1366? This will handle an ENOENT on the group query, and result in same behaviour that .@markeganfuller was seeing above on his system.

[GodloveD]

^ Also @paulo7777

[dtrudg]

Closing this as it is understood fixed with #1366 which has been merged. Please don't hesitate to reopen if any further issue.