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Added a sanity check to the MFM image code.

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OBattler
2020-01-15 02:35:47 +01:00
parent 772a628278
commit df1617f4ef
1 changed files with 5 additions and 3 deletions
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8
src/floppy/fdd_mfm.c
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@@ -338,7 +338,7 @@ mfm_read_side(int drive, int side)
{ {
mfm_t *dev = mfm[drive]; mfm_t *dev = mfm[drive];
int track_index, track_size; int track_index, track_size;
int track_bytes; int track_bytes, ret;
if (dev->hdr.if_type & 0x80) if (dev->hdr.if_type & 0x80)
track_index = get_adv_track_index(drive, side, dev->cur_track); track_index = get_adv_track_index(drive, side, dev->cur_track);
@@ -354,9 +354,11 @@ mfm_read_side(int drive, int side)
memset(dev->track_data[side], 0x00, track_bytes); memset(dev->track_data[side], 0x00, track_bytes);
else { else {
if (dev->hdr.if_type & 0x80) if (dev->hdr.if_type & 0x80)
fseek(dev->f, dev->adv_tracks[track_index].track_offset, SEEK_SET); ret = fseek(dev->f, dev->adv_tracks[track_index].track_offset, SEEK_SET);
else else
fseek(dev->f, dev->tracks[track_index].track_offset, SEEK_SET); ret = fseek(dev->f, dev->tracks[track_index].track_offset, SEEK_SET);
if (ret == -1)
fatal("MFM: Error seeking in mfm_read_side()\n");
fread(dev->track_data[side], 1, track_bytes, dev->f); fread(dev->track_data[side], 1, track_bytes, dev->f);
} }