keystone_create_enclave ioctl returns ENOTTY (inappropriate ioctl for device)

[dayeol]

Following up the issue keystone-enclave/keystone-demo#2
./test fails with

[Keystone SDK] src/keystone.cpp:78 : failed to create enclave - ioctl() failed: -1

which is caused by keystone_ioctl returning ENOTTY (-25)

[dayeol]

@benlaurie

[dayeol]

ENOTTY seems to be returned by the kernel, not the keystone driver nor the SM.
@benlaurie, Could you wipe out riscv-linux and rebuild?
You also need to rebuild riscv-pk after building riscv-linux,
because the booting image (i.e., bbl) is generated by riscv-pk with riscv-linux/vmlinux as a payload.

cd riscv-linux
make ARCH=riscv clean
git clean -df
git clean -Xf
git checkout -f .
cp ../busybear-linux/conf/linux.config .config
make ARCH=riscv olddefconfig
make ARCH=riscv -j$(nproc) vmlinux
cd ..

cd riscv-pk/build
make
cd ../..

If it fails, I'll add some debug code to the driver for further inspection

[dayeol]

@benlaurie, if you are still getting the same error, can you try with a fresh repo,
checkout to dev branch,
and run ./build.sh ?
This will take about 3 hours, but ./fast-build.sh will take less than an hour.

fast-build.sh uses pre-built riscv toolchain instead of compiling all.

I believe that the problem is somehow caused while moving around the branches.

Also could you let me know which OS are you using?

[dayeol]

Probably not reproducible in the latest dev branch.
Please reopen the issue when it reoccurs