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dsk_dsk.cpp: Avoid segfault if double sided DSK image is loaded on simple sided disk device

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MAME crashed if user was trying to load a dsk image with more heads or tracks than disk device supports.
Now the error 'Incompatible image format' is raised.
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AmatCoder 2019-03-19 21:00:13 +01:00 committed by GitHub
parent f0c72dc1aa
commit 66a4629631
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1 changed files with 6 additions and 0 deletions
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6
src/lib/formats/dsk_dsk.cpp
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@ -362,6 +362,12 @@ bool dsk_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
skip = 2;
}
int tracks = header[0x30];
int img_tracks, img_heads;
image->get_maximal_geometry(img_tracks, img_heads);
if (tracks > img_tracks || heads > img_heads)
return false;
uint64_t track_offsets[84*2];
int cnt =0;
if (!extendformat) {