execve.c

LINUX C编程实战这本书附带光盘的原代码

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
	
int main(int argc,char * argv[],char ** environ)
{
	pid_t pid;
	int   stat_val;

	printf("Exec example!\n");
	pid = fork();
	switch(pid) {
		case -1:
			perror("Process Creation failed\n");
			exit(1);
		case 0:
			printf("Child process is running\n");
			printf("My pid = %d ,parentpid = %d\n",getpid(),getppid());
			printf("uid = %d,gid =%d\n",getuid(),getgid());
			execve("processimage",argv, environ);
			printf("process never go to here!\n");
			exit(0);
		default:
			printf("Parent process is running\n");
			break;
	}

	wait(&stat_val);
	exit(0);
}