int fsimage_gcr_read_sector(const disk_image_t *image, BYTE *buf, const disk_addr_t *dadr)
{
fdc_err_t rf;
if (dadr->track > image->tracks) {
log_error(fsimage_gcr_log,
"Track %i out of bounds. Cannot read GCR track.",
dadr->track);
return -1;
}
if (image->gcr == NULL) {
disk_track_t raw;
if (fsimage_gcr_read_track(image, dadr->track, &raw) < 0) {
return -1;
}
if (raw.data == NULL) {
return CBMDOS_IPE_NOT_READY;
}
rf = gcr_read_sector(&raw, buf, (BYTE)dadr->sector);
lib_free(raw.data);
} else {
rf = gcr_read_sector(&image->gcr->tracks[(dadr->track * 2) - 2], buf, (BYTE)dadr->sector);
}
if (rf != CBMDOS_FDC_ERR_OK) {
log_error(fsimage_gcr_log,
"Cannot find track: %i sector: %i within GCR image.",
dadr->track, dadr->sector);
switch (rf) {
case CBMDOS_FDC_ERR_HEADER:
return CBMDOS_IPE_READ_ERROR_BNF; /* 20 */
case CBMDOS_FDC_ERR_SYNC:
return CBMDOS_IPE_READ_ERROR_SYNC; /* 21 */
case CBMDOS_FDC_ERR_NOBLOCK:
return CBMDOS_IPE_READ_ERROR_DATA; /* 22 */
case CBMDOS_FDC_ERR_DCHECK:
return CBMDOS_IPE_READ_ERROR_CHK; /* 23 */
case CBMDOS_FDC_ERR_VERIFY:
return CBMDOS_IPE_WRITE_ERROR_VER; /* 25 */
case CBMDOS_FDC_ERR_WPROT:
return CBMDOS_IPE_WRITE_PROTECT_ON; /* 26 */
case CBMDOS_FDC_ERR_HCHECK:
return CBMDOS_IPE_READ_ERROR_BCHK; /* 27 */
case CBMDOS_FDC_ERR_BLENGTH:
return CBMDOS_IPE_WRITE_ERROR_BIG; /* 28 */
case CBMDOS_FDC_ERR_ID:
return CBMDOS_IPE_DISK_ID_MISMATCH; /* 29 */
case CBMDOS_FDC_ERR_DRIVE:
return CBMDOS_IPE_NOT_READY; /* 74 */
case CBMDOS_FDC_ERR_DECODE:
return CBMDOS_IPE_READ_ERROR_GCR; /* 24 */
default:
return CBMDOS_IPE_NOT_READY;
}
}
return CBMDOS_IPE_OK;
}
int fsimage_gcr_write_sector(disk_image_t *image, const BYTE *buf,
const disk_addr_t *dadr)
{
if (dadr->track > image->tracks) {
log_error(fsimage_gcr_log,
"Track %i out of bounds. Cannot write GCR sector",
dadr->track);
return -1;
}
if (image->gcr == NULL) {
disk_track_t raw;
if (fsimage_gcr_read_track(image, dadr->track, &raw) < 0
|| raw.data == NULL) {
return -1;
}
if (gcr_write_sector(&raw, buf, (BYTE)dadr->sector) != CBMDOS_FDC_ERR_OK) {
log_error(fsimage_gcr_log,
"Could not find track %i sector %i in disk image",
dadr->track, dadr->sector);
lib_free(raw.data);
return -1;
}
if (fsimage_gcr_write_track(image, dadr->track, &raw) < 0) {
lib_free(raw.data);
return -1;
}
lib_free(raw.data);
} else {
if (gcr_write_sector(&image->gcr->tracks[(dadr->track * 2) - 2], buf, (BYTE)dadr->sector) != CBMDOS_FDC_ERR_OK) {
log_error(fsimage_gcr_log,
"Could not find track %i sector %i in disk image",
dadr->track, dadr->sector);
return -1;
}
if (fsimage_gcr_write_track(image, dadr->track, &image->gcr->tracks[(dadr->track * 2) - 2]) < 0) {
log_error(fsimage_gcr_log,
"Failed writing track %i to disk image.", dadr->track);
return -1;
}
}
return 0;
}
int disk_image_read_track(disk_image_t *image, unsigned int track,
BYTE *gcr_data, int *gcr_track_size)
{
return fsimage_gcr_read_track(image, track, gcr_data, gcr_track_size);
}