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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h> /* for fork */
#include <sys/types.h> /* for pid_t */
#include <sys/wait.h> /* for wait */
int main (int argc, char **argv)
{
if (argc < 2) {
printf("Pass command to run as an argument: \"./space parent\" /cmd/to/run [args]\n");
exit(1);
}
/* Spawn a child to run the program. */
pid_t pid = fork();
if (pid == -1) { /* fork failed */
printf("fork() failed\n");
exit(2);
}
if (pid == 0) { /* child process */
execv(argv[1], &argv[1]);
/* This only gets executed if execv fails */
printf("execv() failed\n");
exit(3);
} else { /* pid!=0; parent process */
int status;
waitpid(pid, &status, 0); /* wait for child to exit */
if (status != 0) {
printf("Child regurned with a non-zero status: %d\n", status);
exit(4);
}
}
}
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