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libcamera: ipa_module: verify IPA module API version upon loading

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The IPA module API version determines the layout of struct
IPAModuleInfo. If this version number does not match, then it means that
the IPA module information structure can't be interpreted, and the
module can't be used. Validate this version number upon loading the
IPA module info from the IPA shared object.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Paul Elder
2019-06-04 16:32:12 -04:00
parent 677e8e1dfe
commit 9b4eb44581
1 changed files with 5 additions and 0 deletions
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5
src/libcamera/ipa_module.cpp
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@@ -274,6 +274,11 @@ int IPAModule::loadIPAModuleInfo()
ret = elfLoadSymbol<Elf64_Ehdr, Elf64_Shdr, Elf64_Sym>
(&info_, sizeof(info_), map, soSize, "ipaModuleInfo");
if (info_.moduleAPIVersion != IPA_MODULE_API_VERSION) {
LOG(IPAModule, Error) << "IPA module API version mismatch";
ret = -EINVAL;
}
unmap:
munmap(map, soSize);
close: