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//
// Copyright (C) 2012 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This is a simple program used to test interaction with update_engine when
// executing other programs. This program receives pre-programmed actions in the
// command line and executes them in order.
#include <errno.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string>
#define EX_USAGE_ERROR 100
void usage(const char* program, const char* error) {
if (error)
fprintf(stderr, "ERROR: %s\n", error);
fprintf(stderr, "Usage: %s <cmd> [args..]\n", program);
exit(EX_USAGE_ERROR);
}
int main(int argc, char** argv, char** envp) {
if (argc < 2)
usage(argv[0], "No command passed");
std::string cmd(argv[1]);
if (cmd == "fstat") {
// Call fstat on the passed file descriptor number
if (argc < 3)
usage(argv[0], "No fd passed to fstat");
int fd = atoi(argv[2]);
struct stat buf;
int rc = fstat(fd, &buf);
if (rc < 0) {
int ret = errno;
perror("fstat");
return ret;
}
return 0;
}
usage(argv[0], "Unknown command");
}
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