[LUDOC-276] Add commands leading to setattr to the doc/protocol document

• Type: Technical task
• Resolution: Done
• Priority: Minor
• Assignee: Andrew Uselton (Inactive)
• Reporter: Andrew Uselton (Inactive)

Description

The shell commands 'chmod', 'chown', 'chgrp' and 'touch' (of an existing file) issue POSIX system
calls 'chmod()', 'chown()', 'chown()', and 'stat()', respectively; each of which results in a call to 'll_setattr()' in lustre/llite/llite_lib.c.

Document the messages exchanged to carry out these operations as well as any state change they can cause.