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45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
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// Copyright 2019 Google LLC. All Rights Reserved.
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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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// A binary to test network namespace hostname.
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// Usage: ./hostname <expected hostname>
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// Success only if the hostname is as expected.
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#include <unistd.h>
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#include <cerrno>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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int main(int argc, char** argv) {
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if (argc < 2) {
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printf("argc < 2\n");
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return EXIT_FAILURE;
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}
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char hostname[1024];
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if (gethostname(hostname, sizeof(hostname)) == -1) {
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printf("gethostname: error %d\n", errno);
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return EXIT_FAILURE;
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}
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if (strcmp(hostname, argv[1]) != 0) {
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printf("gethostname: got %s, want %s\n", hostname, argv[1]);
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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