| CNTInit | Initializes a device. |
| CNTShutdown | Performs the device shutdown operation. |
| CNTInitHandle | Opens a content file. |
| CNTInitHandleTitle | Opens the Content files of data titles. |
| CNTReleaseHandle | Closes a content file. |
| CNTGetFSTSize | Gets the FST size of a content file. |
| CNTOpen | Opens files in a content file. |
| CNTFastOpen | Opens a file in the content file by specifying an entry number. |
| CNTConvertPathToEntrynum | Converts the paths of files in a content file to entry numbers. |
| CNTEntrynumIsDir | Determines whether the entry number of a file in the content file represents a directory. |
| CNTGetLength | Obtains the size of the file. |
| CNTSeek | Moves the start location for reading the file. |
| CNTTell | Obtains the current location in the file. |
| CNTRead | Reads a file. |
| CNTReadWithOffset | Reads the file by specifying an offset from the current position in the file. |
| CNTClose | Closes a file. |
| CNTChangeDir | Changes the current directory. |
| CNTGetCurrentDir | Gets the current directory. |
| CNTOpenDir | Opens a directory. |
| CNTReadDir | Gets the directory entry information. |
| CNTCloseDir | Closes a directory. |
| CNTTellDir | Gets the current location associated with the directory structure. |
| CNTSeekDir | Sets the position of the next CNTReadDir process in the directory structure. |
| CNTRewindDir | Resets the position of the specified directory structure to the start of the directory. |
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