//
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// Copyright (C) 2012 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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// This is a simple program used to test interaction with update_engine when
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// executing other programs. This program receives pre-programmed actions in the
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// command line and executes them in order.
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <string>
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#define EX_USAGE_ERROR 100
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void usage(const char* program, const char* error) {
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if (error)
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fprintf(stderr, "ERROR: %s\n", error);
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fprintf(stderr, "Usage: %s <cmd> [args..]\n", program);
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exit(EX_USAGE_ERROR);
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}
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int main(int argc, char** argv, char** envp) {
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if (argc < 2)
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usage(argv[0], "No command passed");
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std::string cmd(argv[1]);
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if (cmd == "fstat") {
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// Call fstat on the passed file descriptor number
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if (argc < 3)
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usage(argv[0], "No fd passed to fstat");
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int fd = atoi(argv[2]);
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struct stat buf;
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int rc = fstat(fd, &buf);
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if (rc < 0) {
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int ret = errno;
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perror("fstat");
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return ret;
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}
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return 0;
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}
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usage(argv[0], "Unknown command");
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}
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