mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
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dfd16f8e4f
This PR integrates an Intel SGX feature called Intel Protection File System Library (IPFS) into the runtime to create, operate and delete files inside the enclave, while guaranteeing the confidentiality and integrity of the data persisted. IPFS can be referred to here: https://www.intel.com/content/www/us/en/developer/articles/technical/overview-of-intel-protected-file-system-library-using-software-guard-extensions.html Introduce a cmake variable `WAMR_BUILD_SGX_IPFS`, when enabled, the files interaction API of WASI will leverage IPFS, instead of the regular POSIX OCALLs. The implementation has been written with light changes to sgx platform layer, so all the security aspects WAMR relies on are conserved. In addition to this integration, the following changes have been made: - The CI workflow has been adapted to test the compilation of the runtime and sample with the flag `WAMR_BUILD_SGX_IPFS` set to true - Introduction of a new sample that demonstrates the interaction of the files (called `file`), - Documentation of this new feature
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*
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* Copyright (C) 2022 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "wasm_export.h"
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#include "bh_read_file.h"
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void
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print_usage(void)
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{
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fprintf(stdout, "Required arguments:\r\n");
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fprintf(stdout, " -f [path of wasm file] \n");
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fprintf(stdout, " -d [path of host directory] \n");
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}
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int
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main(int argc, char *argv_main[])
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{
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static char global_heap_buf[512 * 1024];
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char *buffer, error_buf[128];
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const char *wasm_path = NULL, *wasi_dir = NULL;
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int opt;
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wasm_module_t module = NULL;
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wasm_module_inst_t module_inst = NULL;
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wasm_exec_env_t exec_env = NULL;
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uint32 buf_size, stack_size = 8092, heap_size = 8092;
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uint32_t wasm_buffer = 0;
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RuntimeInitArgs init_args;
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memset(&init_args, 0, sizeof(RuntimeInitArgs));
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while ((opt = getopt(argc, argv_main, "hf:d:")) != -1) {
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switch (opt) {
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case 'f':
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wasm_path = optarg;
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break;
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case 'd':
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wasi_dir = optarg;
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break;
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case 'h':
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print_usage();
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return 0;
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case '?':
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print_usage();
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return 0;
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}
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}
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if (wasm_path == NULL || wasi_dir == NULL) {
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print_usage();
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return 0;
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}
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init_args.mem_alloc_type = Alloc_With_Pool;
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init_args.mem_alloc_option.pool.heap_buf = global_heap_buf;
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init_args.mem_alloc_option.pool.heap_size = sizeof(global_heap_buf);
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if (!wasm_runtime_full_init(&init_args)) {
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printf("Init runtime environment failed.\n");
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return -1;
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}
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buffer = bh_read_file_to_buffer(wasm_path, &buf_size);
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if (!buffer) {
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printf("Open wasm app file [%s] failed.\n", wasm_path);
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goto fail;
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}
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module = wasm_runtime_load(buffer, buf_size, error_buf, sizeof(error_buf));
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if (!module) {
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printf("Load wasm module failed. error: %s\n", error_buf);
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goto fail;
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}
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wasm_runtime_set_wasi_args_ex(module, &wasi_dir, 1, NULL, 0, NULL, 0, NULL,
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0, 0, 1, 2);
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module_inst = wasm_runtime_instantiate(module, stack_size, heap_size,
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error_buf, sizeof(error_buf));
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if (!module_inst) {
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printf("Instantiate wasm module failed. error: %s\n", error_buf);
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goto fail;
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}
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exec_env = wasm_runtime_create_exec_env(module_inst, stack_size);
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if (!exec_env) {
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printf("Create wasm execution environment failed.\n");
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goto fail;
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}
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if (wasm_application_execute_main(module_inst, 0, NULL)) {
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printf("Main wasm function successfully finished.\n");
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}
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else {
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printf("call wasm function main failed. error: %s\n",
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wasm_runtime_get_exception(module_inst));
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goto fail;
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}
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fail:
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if (exec_env)
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wasm_runtime_destroy_exec_env(exec_env);
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if (module_inst) {
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if (wasm_buffer)
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wasm_runtime_module_free(module_inst, wasm_buffer);
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wasm_runtime_deinstantiate(module_inst);
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}
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if (module)
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wasm_runtime_unload(module);
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if (buffer)
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BH_FREE(buffer);
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wasm_runtime_destroy();
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return 0;
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}
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