crosvm/tests/plugin_msr_index_list.c

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/*
* Copyright 2018 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "crosvm.h"
int main(int argc, char** argv) {
struct crosvm *crosvm;
int ret = crosvm_connect(&crosvm);
if (ret) {
fprintf(stderr, "failed to connect to crosvm: %d\n", ret);
return 1;
}
uint32_t msr_indices[256];
int n_entries;
ret = crosvm_get_msr_index_list(crosvm, 1, msr_indices, &n_entries);
if (ret >= 0) {
fprintf(stderr,
"expected crosvm_get_msr_index_list to fail with E2BIG\n");
return 1;
}
memset(msr_indices, 0, sizeof(msr_indices));
ret = crosvm_get_msr_index_list(crosvm, 256, msr_indices, &n_entries);
if (ret < 0) {
fprintf(stderr,
"unexpected failure of crosvm_get_msr_index_list: %d\n", ret);
return 1;
}
if (n_entries <= 1) {
fprintf(stderr,
"unexpected number of supported msr entries: %d\n",
n_entries);
return 1;
}
return 0;
}