#include "types.h"
#include "defs.h"
#include "irx.h"
#include "loadcore.h"
#include "thbase.h"
#include "thevent.h"
#include "thsemap.h"
#include "intrman.h"
#include "stdio.h"
#include "sysclib.h"
#include <errno.h>
#include "devfs.h"
#include "sysmem.h"
#include "iomanX.h"

Include dependency graph for devfs.c:

Data Structures
struct	subdev_t

struct	_devfs_device

struct	_ioman_data

struct	_directory_file

Macros
#define	MODNAME "devfs"

#define	M_PRINTF(format, args...) printf(MODNAME ": " format, ## args)

#define	BANNER "DEVFS %s\n"

#define	VERSION "v0.1"

#define	MAX_OPENFILES 32

#define	MAX_OPEN_DIRFILES 16

Typedefs
typedef struct _devfs_device	devfs_device_t

typedef struct _ioman_data	ioman_data_t

typedef struct _directory_file	directory_file_t

Functions
	IRX_ID (MODNAME, 1, 1)

const char *	devfs_subdev_to_str (int subdev)

int	devfs_fill_dirent (iox_dirent_t *dirent, int devno)

devfs_device_t *	devfs_create_device (const devfs_node_t *node)

int	devfs_delete_device (devfs_device_t *dev)

devfs_device_t *	devfs_find_devicename (const char *name)

devfs_device_t *	devfs_find_deviceid (HDEV hDev)

int	devfs_open (iop_file_t file, const char name, int mode, int unused)

int	devfs_close (iop_file_t *file)

int	devfs_ioctl (iop_file_t file, int cmd, void args)

int	devfs_ioctl2 (iop_file_t file, int cmd, void args, unsigned int arglen, void *buf, unsigned int buflen)

int	devfs_read (iop_file_t file, void buf, int len)

int	devfs_write (iop_file_t file, void buf, int len)

int	devfs_lseek (iop_file_t *file, long loc, int whence)

int	devfs_lseek64 (iop_file_t *file, long long loc, int whence)

int	devfs_dopen (iop_file_t file, const char name)

int	devfs_dclose (iop_file_t *file)

int	devfs_dread (iop_file_t file, iox_dirent_t buf)

int	devfs_getstat (iop_file_t file, const char name, iox_stat_t *stat)

	IOMANX_RETURN_VALUE_IMPL (0)

	IOMANX_RETURN_VALUE_IMPL (EPERM)

int	init_devfs (void)

int	_start (int argc, char *argv[])

int	devfs_check_devname (const char *name)

HDEV	DevFSAddDevice (const devfs_node_t *node)

int	DevFSDelDevice (HDEV hDev)

int	DevFSAddSubDevice (HDEV hDev, u32 subdev_no, s32 mode, devfs_loc_t extent, void *data)

int	DevFSDelSubDevice (HDEV hDev, u32 subdev_no)

Variables
struct irx_export_table	_exp_devfs

devfs_device_t *	root_device

HDEV	dev_count

directory_file_t	open_dirfiles [MAX_OPEN_DIRFILES]

static iop_device_ops_t	devfs_ops

static iop_device_t	devfs_device

Detailed Description

DevFS source file

Definition in file devfs.c.

Data Structure Documentation

◆ subdev_t

struct subdev_t

Definition at line 49 of file devfs.c.

Collaboration diagram for subdev_t:

Data Fields
void *	data
s32	valid
u32	mode
u32	open_refcount
devfs_loc_t	extent
struct _ioman_data *	open_files[MAX_OPENFILES]

◆ _devfs_device

struct _devfs_device

Definition at line 60 of file devfs.c.

Collaboration diagram for _devfs_device:

Data Fields
struct _devfs_device *	forw	Pointers to the next device in the chain
struct _devfs_device *	back
HDEV	hDev
devfs_node_t	node
subdev_t	subdevs[DEVFS_MAX_SUBDEVS]
u32	subdev_count
u32	open_refcount

◆ _ioman_data

struct _ioman_data

Definition at line 71 of file devfs.c.

Collaboration diagram for _ioman_data:

Data Fields
HDEV	hDev
devfs_device_t *	dev	Pointer to the main device, set to NULL if device closed
int	subdev
u32	mode
devfs_loc_t	loc

◆ _directory_file

struct _directory_file

Definition at line 85 of file devfs.c.

Data Fields
HDEV	hDev	Should always be set to -1
u32	devno	The number of the file being listed
u32	opened	If this directory file is in an opened state

Function Documentation

◆ devfs_subdev_to_str()

const char* devfs_subdev_to_str ( int subdev )

Simple function to convert a number to a string

Parameters

subdev The number to convert.

Returns: A constant string containing the number. Returns an empty string if not possible to convert.

Definition at line 103 of file devfs.c.

◆ devfs_fill_dirent()

int devfs_fill_dirent	(	iox_dirent_t *	dirent,
		int	devno
	)

Scans the device list and fills in the corresponding directory entry

Parameters

dirent	Pointer to a iox_dirent_t structure.
devno	The sequential device number to read

Returns: Always 0

Definition at line 137 of file devfs.c.

References root_device.

◆ devfs_create_device()

devfs_device_t* devfs_create_device ( const devfs_node_t * node )

Creates a new device based on the node data supplied

Parameters

node	Pointer to a devfs_node_t structure

Returns: A new device structure or NULL on error.

Definition at line 198 of file devfs.c.

◆ devfs_delete_device()

int devfs_delete_device ( devfs_device_t * dev )

Deletes a device

Parameters

dev	Pointer to a previously allocated device structure

Returns: Always 0

Definition at line 248 of file devfs.c.

◆ devfs_find_devicename()

devfs_device_t* devfs_find_devicename ( const char * name )

Trys to find a device with a matching name.

The name can be a full device name with subdev on the end, the function should still find the device.

Parameters

name	The name of the device to find

Returns: A pointer to the device, if not found returns NULL

Definition at line 276 of file devfs.c.

◆ devfs_find_deviceid()

devfs_device_t* devfs_find_deviceid ( HDEV hDev )

Finds a device from its device handle.

Parameters

hDev	Handle to the device.

Returns: A pointer to the device, if not found returns NULL

Definition at line 309 of file devfs.c.

References root_device.

Referenced by DevFSDelDevice(), and DevFSDelSubDevice().

◆ devfs_open()

int devfs_open	(	iop_file_t *	file,
		const char *	name,
		int	mode,
		int	unused
	)

ioman open handler @oaram file: Pointer to the ioman file structure

Parameters

name	Name of file to open
mode	Open file mode settings

Returns: 0 if success, -1 on error

Definition at line 337 of file devfs.c.

◆ devfs_close()

int devfs_close ( iop_file_t * file )

ioman close handler

Parameters

file	Pointer to an ioman file structure

Returns: 0 on success, else -1

Definition at line 469 of file devfs.c.

◆ devfs_ioctl()

int devfs_ioctl	(	iop_file_t *	file,
		int	cmd,
		void *	args
	)

ioman ioctl handler

Parameters

file	Pointer to an ioman file structure
cmd	ioctl command number
args	Pointer to a buffer containing any arguments

Returns: >= 0 Defined by the type of command, -1 on error

Definition at line 532 of file devfs.c.

◆ devfs_ioctl2()

int devfs_ioctl2	(	iop_file_t *	file,
		int	cmd,
		void *	args,
		unsigned int	arglen,
		void *	buf,
		unsigned int	buflen
	)

ioman ioctl2 handler

Parameters

file	Pointer to an ioman file structure
cmd	ioctl command number
args	Pointer a buffer containing command arguments
arglen	Length of args buffer
buf	Pointer to a return buffer
buflen	Length of buf

Returns: >= 0 Depends on command, -1 on error

Definition at line 580 of file devfs.c.

◆ devfs_read()

int devfs_read	(	iop_file_t *	file,
		void *	buf,
		int	len
	)

ioman read handler

Parameters

file	Pointer to an ioman file structure
buf	Buffer to read data to
len	Length of data to read

Returns: Length of data read. 0 on eof or file pointer out of range. -1 on error.

Definition at line 632 of file devfs.c.

◆ devfs_write()

int devfs_write	(	iop_file_t *	file,
		void *	buf,
		int	len
	)

ioman write handler

Parameters

file	Pointer to an ioman file structure
buf	Pointer to the buffer to write
len	Length of data to write

Returns: Number of bytes written, 0 on eof or -1 on error

Definition at line 680 of file devfs.c.

◆ devfs_lseek()

int devfs_lseek	(	iop_file_t *	file,
		long	loc,
		int	whence
	)

ioman lseek handler

Parameters

file	Pointer to a ioman file structure
loc	Location to seek to
whence	Seek base.

Returns: location seeked to, -1 on error.

Definition at line 727 of file devfs.c.

◆ devfs_lseek64()

int devfs_lseek64	(	iop_file_t *	file,
		long long	loc,
		int	whence
	)

ioman lseek64 handler

Parameters

file	Pointer to an ioman file structure
loc	64bit seek location
whence	Seek base

Definition at line 775 of file devfs.c.

◆ devfs_dopen()

int devfs_dopen	(	iop_file_t *	file,
		const char *	name
	)

ioman dopen handler

Parameters

file	Pointer to an ioman file structure
name	Name of directory to open

Returns: 0 if success, -1 on error

Definition at line 823 of file devfs.c.

◆ devfs_dclose()

int devfs_dclose ( iop_file_t * file )

ioman dclose handler

Parameters

file	Pointer to an ioman file structure

Returns: Always returns 0

Definition at line 852 of file devfs.c.

References _directory_file::hDev, INVALID_HDEV, _directory_file::opened, and _iop_file::privdata.

◆ devfs_getstat()

int devfs_getstat	(	iop_file_t *	file,
		const char *	name,
		iox_stat_t *	stat
	)

ioman getstat handler

Parameters

file	Pointer to an ioman file structure
name	Name of the file to stat
stat	Buffer to receive the stat

Returns: 0 on success, -1 on error

Definition at line 900 of file devfs.c.

◆ init_devfs()

int init_devfs ( void )

DevFS initialise function

Returns: >= 0 on success, -1 on error

Definition at line 1026 of file devfs.c.

References root_device.

◆ _start()

int _start	(	int	argc,
		char *	argv[]
	)

Main start function of the module

Parameters

argc	Unused
argv	Unused

Returns: 0 on success, -1 on error

Definition at line 1044 of file devfs.c.

◆ devfs_check_devname()

int devfs_check_devname ( const char * name )

Function to check a device name only contains alphabetic characters

Parameters

name	The name to check.

Returns: 0 if the name is invalid, else 1

Definition at line 1073 of file devfs.c.

Variable Documentation

◆ root_device

devfs_device_t* root_device

Pointer to the root device

Definition at line 82 of file devfs.c.

Referenced by devfs_fill_dirent(), devfs_find_deviceid(), and init_devfs().

◆ devfs_ops

iop_device_ops_t devfs_ops

static

Initial value:

= {
  IOMANX_RETURN_VALUE(0), 
  IOMANX_RETURN_VALUE(0), 
  IOMANX_RETURN_VALUE(EPERM), 
  &devfs_open, 
  &devfs_close, 
  &devfs_read, 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  &devfs_ioctl, 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  &devfs_dopen, 
  &devfs_dclose, 
  &devfs_dread, 
  &devfs_getstat, 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE_S64(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  IOMANX_RETURN_VALUE(EPERM), 
  &devfs_ioctl2, 
}

Definition at line 985 of file devfs.c.

◆ devfs_device

iop_device_t devfs_device

static

Initial value:

= {
  "devfs",
  IOP_DT_FS | IOP_DT_FSEXT,
  0x100,
  "PS2 Device FS Driver",
  &devfs_ops,
}

Definition at line 1015 of file devfs.c.

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Data Structure Documentation

◆ subdev_t

◆ _devfs_device

◆ _ioman_data

◆ _directory_file

Function Documentation

◆ devfs_subdev_to_str()

◆ devfs_fill_dirent()

◆ devfs_create_device()

◆ devfs_delete_device()

◆ devfs_find_devicename()

◆ devfs_find_deviceid()

◆ devfs_open()

◆ devfs_close()

◆ devfs_ioctl()

◆ devfs_ioctl2()

◆ devfs_read()

◆ devfs_write()

◆ devfs_lseek()

◆ devfs_lseek64()

◆ devfs_dopen()

◆ devfs_dclose()

◆ devfs_getstat()

◆ init_devfs()

◆ _start()

◆ devfs_check_devname()

Variable Documentation

◆ root_device

◆ devfs_ops

◆ devfs_device