56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/*
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* Copyright 2013 Steffen Vogel, Chair for Operating Systems,
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* RWTH Aachen University
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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 file is part of MetalSVM.
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*/
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#include <stdlib.h>
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#include <stdio.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 <errno.h>
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int main(int argc, char** argv)
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{
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printf("======== USER: test forking...\n");
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int id = fork();
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int ret = 0;
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if (id < 0) {
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perror(" PARENT: fork");
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exit(-1);
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}
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else if (id == 0) {
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printf(" CHILD: This is the child. My pid is %u\n", getpid());
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printf(" CHILD: Running memtest...\n");
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const char *argv[] = {"/bin/memtest", "512", "kb", "10", NULL};
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execve(argv[0], argv, NULL);
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perror(" CHILD: exec() returned: ");
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ret = -1;
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}
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else {
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printf(" PARENT: Here is the parent. My pid is %u\n", getpid());
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wait(&ret);
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printf(" PARENT: My child returned with code %i...\n", ret);
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}
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return ret;
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}
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