Berkeley description: A write to an ordinary file, the
creation of a directory or symbolic link, or the creation of a directory
entry failed because the user's quota of disk blocks was exhausted, or
the allocation of an inode for a newly created file failed because the
user's quota of inodes was exhausted.
WinSock description: No equivalent. This has no
network-relevant analog (although the "inode" reference could
refer to a network file system entry).