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cmd/rofl/build: Use dummy SGXS in unsafe mode #684

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cmd/rofl/build: Use dummy SGXS in unsafe mode #684

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42 changes: 29 additions & 13 deletions cmd/rofl/build/sgx.go
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Original file line number Diff line number Diff line change
Expand Up @@ -45,21 +45,37 @@ func sgxBuild(
cobra.CheckErr(fmt.Errorf("failed to build ELF binary: %w", err))
}

// Then build for the SGX target.
fmt.Println("Building SGXS binary...")
elfSgxPath, err := cargo.Build(buildEnv, true, locked, "x86_64-fortanix-unknown-sgx", nil)
if err != nil {
cobra.CheckErr(fmt.Errorf("failed to build SGXS binary: %w", err))
}
var sgxsPath string
switch buildMode {
case buildModeProduction:
// Build proper SGX target.
fmt.Println("Building SGXS binary...")
elfSgxPath, err := cargo.Build(buildEnv, true, locked, "x86_64-fortanix-unknown-sgx", nil)
if err != nil {
cobra.CheckErr(fmt.Errorf("failed to build SGXS binary: %w", err))
}

sgxThreads := uint64(32)
sgxHeapSize := manifest.Resources.Memory * 1024 * 1024
sgxStackSize := uint64(2 * 1024 * 1024)
sgxThreads := uint64(32)
sgxHeapSize := manifest.Resources.Memory * 1024 * 1024
sgxStackSize := uint64(2 * 1024 * 1024)

sgxsPath := fmt.Sprintf("%s.sgxs", elfSgxPath)
err = sgxs.Elf2Sgxs(buildEnv, elfSgxPath, sgxsPath, sgxHeapSize, sgxStackSize, sgxThreads)
if err != nil {
cobra.CheckErr(fmt.Errorf("failed to generate SGXS binary: %w", err))
sgxsPath = fmt.Sprintf("%s.sgxs", elfSgxPath)
err = sgxs.Elf2Sgxs(buildEnv, elfSgxPath, sgxsPath, sgxHeapSize, sgxStackSize, sgxThreads)
if err != nil {
cobra.CheckErr(fmt.Errorf("failed to generate SGXS binary: %w", err))
}
case buildModeUnsafe:
// Generate dummy SGXS file.
fmt.Println("Building dummy SGXS binary...")
tmpFile, err := os.CreateTemp("", "app.sgxs")
if err != nil {
cobra.CheckErr(fmt.Errorf("failed to create dummy SGXS file: %w", err))
}
if _, err := tmpFile.Write([]byte("dummy\n")); err != nil {
cobra.CheckErr(fmt.Errorf("failed to write to dummy SGXS file: %w", err))
}
tmpFile.Close()
sgxsPath = tmpFile.Name()
}

// Compute MRENCLAVE.
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