53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* Copyright 2011 Stefan Lankes, 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 <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int main(int argc, char** argv)
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{
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int status = 0;
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pid_t pid, mypid = getpid();
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printf("Create child process...\n");
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pid = fork();
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if (pid == 0) { // child
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char* newargs[] = {"/bin/hello", "one", "two", "three", NULL};
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char* newenv[] = {"USER=root", "PATH=/bin:/sbin:/usr/bin", "PWD=/", "TEMP=/tmp", NULL};
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mypid = getpid();
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printf("Hello from child process! mypid = %u\n", mypid);
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execve("/bin/hello", newargs, newenv);
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return errno;
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} else {
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mypid = getpid();
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printf("Hello from parent process! pid = %u, mypid = %u\n", pid, mypid);
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wait(&status);
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printf("Child terminated with status %d\n", status);
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}
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return errno;
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}
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