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mfi: Don't crash on a fully unformatted disk

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This commit is contained in:
Olivier Galibert 2021-02-19 17:55:21 +01:00
parent 155d4487d6
commit b9511ec83f
1 changed files with 4 additions and 0 deletions
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4
src/lib/formats/mfi_dsk.cpp
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@ -115,10 +115,14 @@ bool mfi_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
io_generic_read(io, &h, 0, sizeof(header)); io_generic_read(io, &h, 0, sizeof(header));
int resolution = h.cyl_count >> RESOLUTION_SHIFT; int resolution = h.cyl_count >> RESOLUTION_SHIFT;
h.cyl_count &= CYLINDER_MASK; h.cyl_count &= CYLINDER_MASK;
io_generic_read(io, &entries, sizeof(header), (h.cyl_count << resolution)*h.head_count*sizeof(entry)); io_generic_read(io, &entries, sizeof(header), (h.cyl_count << resolution)*h.head_count*sizeof(entry));
image->set_form_variant(h.form_factor, h.variant); image->set_form_variant(h.form_factor, h.variant);
if(!h.cyl_count)
return true;
std::vector<uint8_t> compressed; std::vector<uint8_t> compressed;
entry *ent = entries; entry *ent = entries;