A descriptor is a reference to a filesystem object, which may be a file,
directory, named pipe, special file, or other object on which filesystem
calls may be made.
A descriptor is a reference to a filesystem object, which may be a file,
directory, named pipe, special file, or other object on which filesystem
calls may be made.
Error codes returned by functions, similar to errno in POSIX.
Not all of these error codes are returned by the functions provided by this
API; some are used in higher-level library layers, and others are provided
merely for alignment with POSIX.