These functions create and manipulate the time fields in an
Supported time fields are atime (access time), birthtime (creation time),
ctime (last time an inode property was changed) and mtime (modification time).
provides a high-resolution interface.
The timestamps are truncated automatically depending on the archive format
(for archiving) or the filesystem capabilities (for restoring).
All timestamp fields are optional.
functions can be used to mark the corresponding field as missing.
The current state can be queried using
Unset time fields have a second and nanosecond field of 0.