TL;DR: In this article, the same file system directory can support directory and file name lookups that treat the directories and file names in either a case sensitive manner or in a case insensitive manner.
Abstract: A file system stores directories and files in a file system directory that uses case sensitive names. The same file system directory can support directory and file name lookups that treat the directory and file names in a case sensitive manner or in a case insensitive manner. The search criteria used for the lookup can be based on case-folding the name to produce a case-neutral name and on the original name with its case preserved. Search criteria can be generated for a case sensitive name lookup or for a case insensitive name lookup on the same file system directory, thus avoiding having to support separate file systems or separate file system directories for case sensitive and case insensitive file access.
TL;DR: In this article, the authors describe technologies that provide an element of security related to file system operations, such as a directory or a file, which can be associated with information that describes how to handle letter case when a file name included in a file system operation request is used to locate a file in the file system.
Abstract: Described herein are technologies that provide an element of security related to file system operations. Individual nodes in a file system, such as a directory or a file, can be associated with information that describes how to handle letter case when a file name included in a file system operation request is used to locate a file in the file system. For example, a case sensitive designation associated with a directory can require a case sensitive match between a file name included in a request and a file name included in the directory, in order to perform the requested file system operation. In another example, a case preferring designation associated with a directory first checks for a case sensitive match between file names. If a case sensitive match does not exist, then a case insensitive match between the file names can be used to perform the requested file system operation.