An application stores information in a file system by creating a file or appending new information to an existing file. At a later time, this information may be retrieved by reading the file. However, if a certain file must be found, or all files may be listed, the application can iterate through the entries in a directory using the directory access (or simply directory) functions. The available directory functions are listed in the directory API functions table.
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The entry functions and the directory Open() function accept one or more full directory paths. For information about using file and path names, see µC/FS File and Directory Names and Paths.
The functions listed in Table 9-1 the directory API functions table are core functions in the directory access module (FSDir_####() functions). These are matched by API level functions that correspond to standard C or POSIX functions. More information about the API-level functions can be found in Chapter 10, “POSIX API” POSIX API. The core and API functions provide basically the same functionality; the benefits of the former are enhanced capabilities, a consistent interface and meaningful return error codes.
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