POSIX ownership and permissions

For items stored through NFS, HCP maintains these POSIX metadata values:

A user ID (UID), which represents the owner, and a group ID (GID), which represents the owning group. UIDs and GIDs are integers greater than or equal to zero.

UIDs are not related to HCP-specific object ownership. For more information on that property, see Ownership.

A POSIX permissions value, which is made up of three sets of POSIX permissions — one for the user identified by the POSIX user ID, one for the group identified by the POSIX group ID, and one for all others. A set of permissions is any combination of read, write, or execute, including none.

POSIX permission values determine the actions users can perform on an item when accessing it on a CIFS or NFS client:

oFor an object:

Read permission lets users view and retrieve the object content.

Write permission has no effect.

Note: Even if an object has write permission, its data is secure because WORM semantics prevent it from being modified.

Execute permission, which applies only to objects created for executable files, lets users execute the object.

oFor a directory:

Read permission lets users see which objects are in the directory.

Write permission lets users add and delete objects in the directory or rename empty subdirectories.

Execute permission lets users traverse the directory to get to known objects in it, but it does not let users read the directory.

Trademarks and Legal Disclaimer

© 2017 Hitachi Data Systems Corporation. All rights reserved.