4ff69cacdf
1. This is simpler, as it can be triggered by logic in the init.rc 2. The old method of probing /dev/kvm fails if non-protected kvm is enabled: the device will exist, but pkvm is not enable Bug: 346525496 Test: observe that pkvm is enabled after double reboot Change-Id: I2f557ed56f13458a288ede34e672692b511b6bc9
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "pkvm_enabler"
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <log/log.h>
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#define MISC_WRITER "/vendor/bin/misc_writer"
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int main() {
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char *newargv[] = { MISC_WRITER, "--set-enable-pkvm", NULL };
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char *newenvp[] = { NULL };
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pid_t pid;
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int ret, wstatus;
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/* Run misc_writer and return FAILURE to force a reboot. */
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pid = fork();
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if (pid == -1) {
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ALOGE("Could not fork: %d", errno);
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exit(EXIT_FAILURE);
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}
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if (pid == 0) {
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execve(MISC_WRITER, newargv, newenvp);
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ALOGE("Could not execute " MISC_WRITER ": %d", errno);
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_exit(EXIT_FAILURE);
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}
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waitpid(pid, &wstatus, 0);
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if (WIFEXITED(wstatus)) {
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ret = WEXITSTATUS(wstatus);
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if (ret) {
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ALOGE(MISC_WRITER " exit status: %d", ret);
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}
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} else {
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ALOGE(MISC_WRITER " terminated unexpectedly: %d", wstatus);
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}
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exit(EXIT_FAILURE);
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}
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