fakehost.c

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/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
//#define DEBUG
 
#include "types.h"
#include "loadcore.h"
#include "stdio.h"
#include "sysclib.h"
#include <errno.h>
#include "thbase.h"
#include "intrman.h"
#include "sysmem.h"
#include "sifman.h"
#include "sifcmd.h"
 
#include "iomanX.h"
#include "ioman_mod.h"
 
#define TRUE    1
#define FALSE   0
 
#define MODNAME "fakehost"
 
// This is the filesystem to replace
#define FS_REPNAME "host"
 
IRX_ID(MODNAME, 1, 1);
 
#define M_PRINTF(format, args...) \
    printf(MODNAME ": " format, ##args)
 
#ifdef DEBUG
#define M_DEBUG M_PRINTF
#else
#define M_DEBUG(format, args...)
#endif
 
// Host base location
static char base[100];
 
static int fd_global;
 
extern int ttyMount(void);
extern int naplinkRpcInit(void);
 
char * fd_name( char * buffer, const char * name )
{
    strcpy( buffer, base );
    strcat( buffer, name );
    return buffer;
}
 
int fd_save( int fd, iop_io_file_t *f )
{
    f->unit = ++fd_global;
    f->privdata = (void *) fd;
    return f->unit;
}
 
int realfd( iop_io_file_t *f )
{
    return (int) f->privdata;
}
 
int dummy()
{
    M_DEBUG("dummy function called\n");
    return -EIO;
}
 
int fd_initialize( iop_io_device_t *driver)
{
    M_PRINTF( "initializing '%s' file driver.\n", driver->name );
    return 0;
}
 
int fd_open( iop_io_file_t *f, const char *name, int mode)
{
    char nameBuffer[ 250 ];
    int fd;
 
    M_DEBUG("open %i %s %s\n", f->unit, name ,base);
    fd = iomanX_open( fd_name( nameBuffer, name), mode, 0 );
    if ( fd < 0 ) return fd;
 
    return fd_save( fd, f );
}
 
int fd_close( iop_io_file_t *f )
{
    return iomanX_close( realfd(f) );
}
 
int fd_read( iop_io_file_t *f, void * buffer, int size )
{
    return iomanX_read( realfd(f), buffer, size );
}
 
int fd_write( iop_io_file_t *fd, void *buffer, int size )
{
    return iomanX_write( realfd(fd), buffer, size );
}
 
int fd_lseek( iop_io_file_t *fd, int offset, int whence)
{
    return iomanX_lseek( realfd(fd), offset, whence );
}
 
// Function array for fileio structure.
static iop_io_device_ops_t functions = {
    &fd_initialize,
    (void *)&dummy,
    (void *)&dummy,
    &fd_open,
    &fd_close,
    &fd_read,
    (void *)&dummy,
    &fd_lseek,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
    (void *)&dummy,
};
 
// FileIO structure.
static iop_io_device_t driver = {
    FS_REPNAME,
    16,
    1,
    "host redirection driver",
    &functions,
};
 
int _start( int argc, char *argv[] )
{
    M_PRINTF( "Copyright (c) 2004 adresd\n" );
 
    if ( argc != 2 )
    {
        M_PRINTF( "HOST requires based argument\n" );
        return MODULE_NO_RESIDENT_END;
    }
      else
      {
        // Copy the base location.
        strncpy( base, argv[1] ,sizeof(base) - 1);
        base[sizeof(base) - 1] = '\0';
 
        M_PRINTF( "redirecting '%s:' to '%s'\n",FS_REPNAME,base);
        fd_global = 1;
 
        M_PRINTF( "HOST final step, bye\n" );
 
        // Install naplink RPC handler
        naplinkRpcInit();
 
        // now install the fileio driver
        io_DelDrv( FS_REPNAME );
        io_AddDrv( &driver );
    }
    return MODULE_RESIDENT_END;
}