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author | 2019-03-19 21:00:13 +0100 | |
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committer | 2019-03-19 21:00:13 +0100 | |
commit | 66a4629631b8796896a4dc3bd080399b8531ada0 (patch) | |
tree | d001b629991c7131e6a1a3f749a9dc9289a23a79 | |
parent | f0c72dc1aaed2f2a12295f1adbabcdc754dd2e08 (diff) |
dsk_dsk.cpp: Avoid segfault if double sided DSK image is loaded on simple sided disk device
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.
-rw-r--r-- | src/lib/formats/dsk_dsk.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/lib/formats/dsk_dsk.cpp b/src/lib/formats/dsk_dsk.cpp index 5b019fb53d1..c90579b68d0 100644 --- a/src/lib/formats/dsk_dsk.cpp +++ b/src/lib/formats/dsk_dsk.cpp @@ -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) { |