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Diffstat (limited to 'src/lib/formats/jfd_dsk.cpp')
-rw-r--r--src/lib/formats/jfd_dsk.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lib/formats/jfd_dsk.cpp b/src/lib/formats/jfd_dsk.cpp
index 08d5dda91b7..b9ea2d55fb4 100644
--- a/src/lib/formats/jfd_dsk.cpp
+++ b/src/lib/formats/jfd_dsk.cpp
@@ -192,8 +192,9 @@ const char *jfd_format::extensions() const
int jfd_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const
{
uint64_t size;
- if (io.length(size))
+ if (io.length(size) || !size)
return 0;
+
std::vector<uint8_t> img(size);
size_t actual;
io.read_at(0, &img[0], size, actual);
@@ -224,7 +225,7 @@ int jfd_format::identify(util::random_read &io, uint32_t form_factor, const std:
}
if (!memcmp(&img[0], JFD_HEADER, sizeof(JFD_HEADER))) {
- return 100;
+ return FIFID_SIGN;
}
return 0;