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108 lines
3.0 KiB
108 lines
3.0 KiB
/*
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* Copyright (C) 2016 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#define LOG_TAG "dumpstate"
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#include <cutils/log.h>
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void PrintDefaultOutput() {
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fprintf(stdout, "stdout\n");
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fflush(stdout);
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fprintf(stderr, "stderr\n");
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fflush(stderr);
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}
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/*
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* Binary used to on RunCommand tests.
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*
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* Usage:
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*
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* - Unless stated otherwise this command:
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*
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* 1.Prints `stdout\n` on `stdout` and flushes it.
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* 2.Prints `stderr\n` on `stderr` and flushes it.
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* 3.Exit with status 0.
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*
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* - If 1st argument is '--pid', it first prints its pid on `stdout`.
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*
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* - If 1st argument is '--uid', it first prints its uid on `stdout`.
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*
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* - If 1st argument is '--crash', it uses ALOGF to crash and returns 666.
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*
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* - With argument '--exit' 'CODE', returns CODE;
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*
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* - With argument '--sleep 'TIME':
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*
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* 1.Prints `stdout line1\n` on `stdout` and `sleeping TIME s\n` on `stderr`
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* 2.Sleeps for TIME s
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* 3.Prints `stdout line2\n` on `stdout` and `woke up\n` on `stderr`
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*/
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int main(int argc, char* const argv[]) {
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if (argc == 2) {
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if (strcmp(argv[1], "--crash") == 0) {
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PrintDefaultOutput();
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LOG_FATAL("D'OH\n");
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return 666;
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}
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}
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if (argc == 3) {
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if (strcmp(argv[1], "--exit") == 0) {
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PrintDefaultOutput();
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return atoi(argv[2]);
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}
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}
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if (argc > 1) {
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int index = 1;
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// First check arguments that can shift the index.
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if (strcmp(argv[1], "--pid") == 0) {
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index++;
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fprintf(stdout, "%d\n", getpid());
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fflush(stdout);
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} else if (strcmp(argv[1], "--uid") == 0) {
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index++;
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fprintf(stdout, "%d\n", getuid());
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fflush(stdout);
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}
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// Then the "common" arguments, if any.
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if (argc > index + 1) {
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if (strcmp(argv[index], "--sleep") == 0) {
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int napTime = atoi(argv[index + 1]);
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fprintf(stdout, "stdout line1\n");
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fflush(stdout);
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fprintf(stderr, "sleeping for %ds\n", napTime);
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fflush(stderr);
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sleep(napTime);
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fprintf(stdout, "stdout line2\n");
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fflush(stdout);
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fprintf(stderr, "woke up\n");
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fflush(stderr);
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return 0;
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}
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}
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}
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PrintDefaultOutput();
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return 0;
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}
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