The following list provides a brief overview of all File System Component functions.

Standard I/O Routines
- fclose : Causes stream flush.
- fflush : Enforces a write operation to a data stream.
- fopen : Opens a file for reading or writing.
- freopen : Reopens a file for reading or writing.
- setbuf : Sets stream buffer.
- setvbuf : Sets stream buffer.
- fprintf : Writes a string to a data stream.
- fscanf : Reads values from a data stream.
- vfscanf : Reads data from the stream.
- vfprintf : Writes a string to a data stream.
- fgetc : Reads a single character from a data steam.
- fgets : Reads a string from a data steam.
- fputc : Writes a character to a data stream.
- fputs : Writes a string to a data stream.
- getc : Reads a single character from a data steam.
- putc : Writes a character to a data stream.
- ungetc : Stores a character back into the data stream.
- fread : Reads a number of items with a given size from a data stream.
- fwrite : Writes items from a buffer to a data stream.
- fgetpos : Stores the current value of the file position indicator.
- fseek : Positions the file cursor to a new location.
- fsetpos : Sets the file position indicator.
- ftell : Reads the file cursor position.
- rewind : Rewinds positions of the file cursor to the beginning of a data stream.
- clearerr : Clears the end-of-file and error indicators.
- feof : Determines whether an end-of-file condition has occurred.
- ferror : Tests a data stream for read or write errors.
System Routines
- finit : Initializes the required software library resources.
- funinit : Uninitializes the File System.
- fmount : Mounts the File System of a specified drive.
- funmount : Unmounts a File System volume.
File Maintenance Routines
- fdelete : Deletes one or more files.
- ffind : Searches for files or directories that match a specific pattern.
- frename : Replaces the name of a file or directory.
- fattrib : Changes file or directory attributes.
Directory Maintenance Routines
- fpwd : Prints the current working directory.
- fchdir : Changes the current working directory.
- fmkdir : Creates a new directory or any intermediate directories in the path.
- frmdir : Removes a directory if it is empty.
Utility Routines
- fchdrive : Changes the "Current Drive".
- ffree : Calculates the free space on a device.
- fformat : Formats an EFS or FAT storage media for using a file system.
- fanalyse : Examines the Embedded File System and checks for file fragmentation.
- fcheck : Analyses the consistency of the Embedded File System and determines if it has been initialized.
- fdefrag : De-fragments the Embedded File System.
- fmedia : Detects the presence of a removable drive in the system.
- finfo : Reads general drive information.
- fvol : Reads the volume label.
File Time Support Routines
- fs_get_time : Returns a time value.
Media Support Routines
- fs_mc_read_cd : Returns memory card detection state.
- fs_mc_read_wp : Returns memory card write protection state.
- fs_mc_spi_control_ss : Controls the Slave Select (SS) signal state.
- fs_mc_lock_unlock : Returns the media lock/unlock information structure.
I/O Control Interface Routines
- fs_ioc_get_id : Returns the drive identifier associated with the specified drive letter.
- fs_ioc_lock : Locks a drive.
- fs_ioc_unlock : Unlocks a drive and releases media access to the file system layer.
- fs_ioc_get_cache : Gains information about the file system cache buffer location and its size.
- fs_ioc_read_sector : Reads data from one or more sectors of FAT formatted media.
- fs_ioc_write_sector : Writes data to one or more sectors of FAT formatted media.
- fs_ioc_read_info : Reads the media configuration.
- fs_ioc_device_ctrl : Sends control codes directly to the device driver.
Retarget Interface Routines
- fs_fopen : Opens a file.
- fs_fclose : Closes a file.
- fs_fwrite : Writes to a file.
- fs_fread : Reads from a file.
- fs_fflush : Flushes the file buffers.
- fs_fseek : Moves the file position pointer.
- fs_fsize : Returns the file size.