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PHAT File System
[File System API.]

Collaboration diagram for PHAT File System:


Detailed Description

FAT12/16/32 compatible file system.

Note:
This is alpha code and may contain severe bugs.


Modules

 * Volume Support
 Dealing with volumes.
 Directory Support
 Routines for reading and writing directories.
 PHAT12 Support
 PHAT12 specific routines.
 PHAT16 Support
 PHAT16 specific routines.
 PHAT32 Support
 PHAT32 specific routines.
 PHAT Block I/O
 Reading and writing data blocks.
 PHAT Utilities
 General utility routines used by the PHAT file system.
 PHAT Debugging Support
 Listing various PHAT structures.

Data Structures

struct  _PHATFILE
 PHAT file descriptor structure. More...

File attributes.

#define PHAT_FATTR_RDONLY
#define PHAT_FATTR_HIDDEN
#define PHAT_FATTR_SYSTEM
#define PHAT_FATTR_VOLID
#define PHAT_FATTR_DIR
#define PHAT_FATTR_ARCHIV
#define PHAT_FATTR_LFN
#define PHAT_FATTR_FILEMASK

Defines

#define PHAT_MAX_PATHLEN
 Maximum length of a full path name.
#define PHAT_MAX_NAMELEN
 Maximum length of a base file name.
#define PHATEOC
 Marks end of cluster chain.

Typedefs

typedef _PHATFILE PHATFILE
 PHAT file descriptor structure.

Functions

u_long AllocFirstCluster (NUTFILE *nfp)
 Allocate the first cluster of a file.

Variables

NUTDEVICE devPhat0
 PHAT file system driver information structure.
NUTDEVICE devPhat1
NUTDEVICE devPhat0
 PHAT file system driver information structure.
NUTDEVICE devPhat1


Define Documentation

#define PHAT_FATTR_ARCHIV
 

File is not archived. This flag will be set when the file is created or modified.

#define PHAT_FATTR_DIR
 

File contains a subdirectory.

#define PHAT_FATTR_FILEMASK
 

Only these flags are allowed for files and directories.

#define PHAT_FATTR_HIDDEN
 

Hidden file.

#define PHAT_FATTR_LFN
 

Long filename entry.

#define PHAT_FATTR_RDONLY
 

Read only file.

#define PHAT_FATTR_SYSTEM
 

System file.

#define PHAT_FATTR_VOLID
 

No file, but a volume label.


Function Documentation

u_long AllocFirstCluster NUTFILE nfp  ) 
 

Allocate the first cluster of a file.

Parameters:
The file for which a cluster is allocated.
Returns:
Number of the allocated cluster, which is not lower than 2. Any value lower than 2 indicates an error.


Variable Documentation

NUTDEVICE devPhat0
 

PHAT file system driver information structure.

A pointer to this structure must be passed to NutRegisterDevice() to bind this file system driver to the Nut/OS kernel. An application may then call /verbatim _open("MMC0:1/PHAT0", _O_RDWR | _O_BINARY); /endverbatim to mount partition 1 on the previously registered block device (devMmc0 in this example).

NUTDEVICE devPhat0
 

PHAT file system driver information structure.

A pointer to this structure must be passed to NutRegisterDevice() to bind this file system driver to the Nut/OS kernel. An application may then call /verbatim _open("MMC0:1/PHAT0", _O_RDWR | _O_BINARY); /endverbatim to mount partition 1 on the previously registered block device (devMmc0 in this example).


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