mirror of
https://github.com/jfdelnero/HxCFloppyEmulator.git
synced 2026-07-27 19:56:23 +00:00
417 lines
9.6 KiB
C
417 lines
9.6 KiB
C
/*
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//
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// Copyright (C) 2006-2026 Jean-François DEL NERO
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//
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// This file is part of the HxCFloppyEmulator library
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//
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// HxCFloppyEmulator may be used and distributed without restriction provided
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// that this copyright statement is not removed from the file and that any
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// derivative work contains the original copyright notice and the associated
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// disclaimer.
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//
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// HxCFloppyEmulator is free software; you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// HxCFloppyEmulator is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with HxCFloppyEmulator; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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*/
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///////////////////////////////////////////////////////////////////////////////////
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//-------------------------------------------------------------------------------//
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//-------------------------------------------------------------------------------//
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//-----------H----H--X----X-----CCCCC----22222----0000-----0000------11----------//
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//----------H----H----X-X-----C--------------2---0----0---0----0--1--1-----------//
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//---------HHHHHH-----X------C----------22222---0----0---0----0-----1------------//
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//--------H----H----X--X----C----------2-------0----0---0----0-----1-------------//
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//-------H----H---X-----X---CCCCC-----222222----0000-----0000----1111------------//
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//-------------------------------------------------------------------------------//
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//----------------------------------------------------- http://hxc2001.free.fr --//
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///////////////////////////////////////////////////////////////////////////////////
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// File : fs_cpm.c
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// Contains: CP/M File system manager functions
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//
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// Written by: Jean-François DEL NERO
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//
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// Change History (most recent first):
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///////////////////////////////////////////////////////////////////////////////////
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "types.h"
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#include "internal_libhxcfe.h"
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#include "tracks/track_generator.h"
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#include "sector_search.h"
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#include "fdc_ctrl.h"
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#include "fs_manager/fs_manager.h"
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#include "libhxcfe.h"
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#include "floppy_loader.h"
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#include "floppy_utils.h"
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#include "libcpmfs/libcpmfs.h"
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static HXCFE_FSMNG * gb_fsmng;
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cpmfs fs;
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void init_cpm(HXCFE_FSMNG * fsmng)
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{
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gb_fsmng = fsmng;
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libcpmfs_init(&fs);
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}
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static int32_t media_read(uint32_t sector, unsigned char *buffer, uint32_t sector_count)
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{
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return 0;
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}
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static int32_t media_write(uint32_t sector, unsigned char *buffer,uint32_t sector_count)
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{
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return 0;
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}
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int32_t cpm_mountImage(HXCFE_FSMNG * fsmng, HXCFE_FLOPPY *floppy)
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{
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unsigned char sectorbuffer[1024];
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int32_t nbsector,fdcstatus,badsectorfound;
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badsectorfound = 0;
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if(!floppy || !fsmng)
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return HXCFE_BADPARAMETER;
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fsmng->fp = floppy;
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fsmng->trackperdisk = fsmng->fp->floppyNumberOfTrack;
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fsmng->sectorpertrack = 9;
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fsmng->sidepertrack = fsmng->fp->floppyNumberOfSide;
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fsmng->sectorsize = 512;
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if(fsmng->fdc)
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hxcfe_deinitFDC (fsmng->fdc);
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fsmng->fdc = hxcfe_initFDC (fsmng->hxcfe);
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if(fsmng->fdc)
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{
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if(hxcfe_insertDiskFDC (fsmng->fdc,floppy) == HXCFE_NOERROR)
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{
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// Count the number of sector
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// Side 1 checking
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nbsector = 0;
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while(hxcfe_readSectorFDC(fsmng->fdc,0,1,(unsigned char)(1+nbsector),512,ISOIBM_MFM_ENCODING,1,(unsigned char*)sectorbuffer,sizeof(sectorbuffer),&fdcstatus))
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{
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if(fdcstatus == FDC_BAD_DATA_CRC)
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badsectorfound++;
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nbsector++;
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}
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if(nbsector)
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fsmng->sidepertrack = 2;
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nbsector = 0;
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while(hxcfe_readSectorFDC(fsmng->fdc,0,0,(unsigned char)(1+nbsector),512,ISOIBM_MFM_ENCODING,1,(unsigned char*)sectorbuffer,sizeof(sectorbuffer),&fdcstatus))
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{
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if(fdcstatus == FDC_BAD_DATA_CRC)
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badsectorfound++;
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nbsector++;
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}
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// Retry with 1024 bytes per sector
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if(!nbsector)
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{
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while(hxcfe_readSectorFDC(fsmng->fdc,0,0,(unsigned char)(1+nbsector),1024,ISOIBM_MFM_ENCODING,1,(unsigned char*)sectorbuffer,sizeof(sectorbuffer),&fdcstatus))
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{
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if(fdcstatus == FDC_BAD_DATA_CRC)
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badsectorfound++;
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nbsector++;
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}
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if(nbsector)
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fsmng->sectorsize = 1024;
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}
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fsmng->sectorpertrack = nbsector;
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gb_fsmng->hxcfe->hxc_printf(MSG_DEBUG,"CPMFS : %d Sectors per track (%d Bytes per sector)",fsmng->sectorpertrack,fsmng->sectorsize);
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if(fsmng->sectorpertrack && !badsectorfound)
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{
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/*if ((err=Device_open(&drive.dev,image,O_RDONLY,devopts)))
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{
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fprintf(stderr,"%s: can not open %s (%s)\n",cmd,image,err);
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}*/
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/* Attach media access functions to library*/
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if (libcpmfs_attach_media(&fs, media_read, media_write))
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{
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gb_fsmng->hxcfe->hxc_printf(MSG_DEBUG,"CPMFS : Media attach failed");
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}
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return HXCFE_NOERROR;
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}
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}
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}
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return HXCFE_INTERNALERROR;
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}
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int32_t cpm_umountImage(HXCFE_FSMNG * fsmng)
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{
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if(fsmng->fdc)
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{
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hxcfe_deinitFDC (fsmng->fdc);
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fsmng->fdc = 0;
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}
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return HXCFE_NOERROR;
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}
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int32_t cpm_getFreeSpace(HXCFE_FSMNG * fsmng)
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{
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return 0;
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}
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int32_t cpm_getTotalSpace(HXCFE_FSMNG * fsmng)
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{
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return 0;
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}
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int32_t cpm_openDir(HXCFE_FSMNG * fsmng, char * path)
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{
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cpmfs_dir * dir;
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int32_t i;
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dir = malloc(sizeof(cpmfs_dir));
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if(dir)
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{
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memset(dir,0,sizeof(cpmfs_dir));
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i = 0;
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while(fsmng->dirhandletable[i] && i<128)
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{
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i++;
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}
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if(i == 128)
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{
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free(dir);
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return HXCFE_ACCESSERROR;
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}
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if(libcpmfs_opendir(&fs,path, dir))
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{
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fsmng->dirhandletable[i] = dir;
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return i+1;
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}
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else
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{
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free(dir);
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return HXCFE_ACCESSERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_readDir(HXCFE_FSMNG * fsmng,int32_t dirhandle,HXCFE_FSENTRY * dirent)
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{
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int32_t ret;
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cpmfs_entry entry;
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if(dirhandle<128)
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{
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if(fsmng->dirhandletable[dirhandle-1])
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{
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ret = libcpmfs_readdir(&fs, fsmng->dirhandletable[dirhandle-1], &entry);
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if(!ret)
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{
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strcpy(dirent->entryname,(char*)entry.filename);
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dirent->size = entry.size;
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dirent->isdir = 0;
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if(entry.is_dir)
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dirent->isdir = 1;
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dirent->flags = 0;
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return HXCFE_VALIDFILE;
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}
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return HXCFE_NOERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_closeDir(HXCFE_FSMNG * fsmng, int32_t dirhandle)
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{
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if(dirhandle<128)
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{
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if(fsmng->dirhandletable[dirhandle-1])
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{
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free(fsmng->dirhandletable[dirhandle-1]);
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fsmng->dirhandletable[dirhandle-1] = 0;
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return HXCFE_NOERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_openFile(HXCFE_FSMNG * fsmng, char * filename)
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{
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void *file;
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int32_t i;
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i = 0;
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while(fsmng->handletable[i] && i<128)
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{
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i++;
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}
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if(i == 128) return HXCFE_ACCESSERROR;
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file = libcpmfs_fopen(&fs,filename, "r");
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if(file)
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{
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fsmng->handletable[i] = file;
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return i+1;
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_createFile(HXCFE_FSMNG * fsmng, char * filename)
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{
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void *file;
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int32_t i;
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i = 0;
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while(fsmng->handletable[i] && i<128)
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{
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i++;
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}
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if(i == 128) return HXCFE_ACCESSERROR;
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file = libcpmfs_fopen(&fs,filename, "wb");
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if(file)
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{
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fsmng->handletable[i] = file;
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return i+1;
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_writeFile(HXCFE_FSMNG * fsmng,int32_t filehandle,unsigned char * buffer,int32_t size)
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{
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int32_t byteswrite;
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if(filehandle<128)
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{
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if(fsmng->handletable[filehandle-1])
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{
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byteswrite = libcpmfs_fwrite(&fs,buffer, 1, size, fsmng->handletable[filehandle-1]);
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return byteswrite;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_readFile( HXCFE_FSMNG * fsmng,int32_t filehandle,unsigned char * buffer,int32_t size)
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{
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int32_t bytesread;
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if(filehandle && filehandle<128)
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{
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if(fsmng->handletable[filehandle-1])
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{
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bytesread = libcpmfs_fread(&fs,buffer, 1, size, fsmng->handletable[filehandle-1]);
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return bytesread;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_deleteFile(HXCFE_FSMNG * fsmng, char * filename)
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{
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if(fsmng)
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{
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if(libcpmfs_remove(&fs,filename)>=0)
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{
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return HXCFE_NOERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_closeFile( HXCFE_FSMNG * fsmng,int32_t filehandle)
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{
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if(filehandle && filehandle<128)
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{
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if(fsmng->handletable[filehandle-1])
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{
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libcpmfs_fclose(&fs,fsmng->handletable[filehandle-1]);
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fsmng->handletable[filehandle-1] = 0;
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return HXCFE_NOERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_createDir( HXCFE_FSMNG * fsmng,char * foldername)
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{
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if(fsmng)
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{
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if(libcpmfs_createdirectory(&fs,foldername))
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{
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return HXCFE_NOERROR;
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_removeDir( HXCFE_FSMNG * fsmng,char * foldername)
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{
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return cpm_deleteFile(fsmng, foldername);
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}
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int32_t cpm_ftell( HXCFE_FSMNG * fsmng,int32_t filehandle)
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{
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if(filehandle && filehandle<128)
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{
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if(fsmng->handletable[filehandle-1])
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{
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return libcpmfs_ftell(&fs,fsmng->handletable[filehandle-1]);
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}
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}
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return HXCFE_ACCESSERROR;
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}
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int32_t cpm_fseek( HXCFE_FSMNG * fsmng,int32_t filehandle,int32_t offset,int32_t origin)
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{
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if(filehandle && filehandle<128)
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{
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if(fsmng->handletable[filehandle-1])
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{
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return libcpmfs_fseek(&fs,fsmng->handletable[filehandle-1],offset,origin);
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}
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}
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return HXCFE_ACCESSERROR;
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}
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