sandbox_test.c

#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<sys/syscall.h>
#include<sys/stat.h>

#define GETCWD 79
#define MKDIR 83
#define RMDIR 84
#define CHMOD 90

#define REGIST_PID 340
#define UNREGIST_PID 341
#define REGIST_SYSCALL_NUM 342
#define UNREGIST_SYSCALL_NUM 343


void regist_pid(int pid){
	syscall(REGIST_PID,pid);
}


void unregist_pid(int pid){
	syscall(UNREGIST_PID,pid);
}


void regist_syscall_num(int syscall_num){
	syscall(REGIST_SYSCALL_NUM,syscall_num);
}


void unregist_syscall_num(int syscall_num){
	syscall(UNREGIST_SYSCALL_NUM,syscall_num);
}


int main(int arc,char *argv[]){
	int pid;
	pid = fork();

	if(pid > 0){
		//parent
		printf("parent : child pid -> %d\n",pid);
		regist_pid(pid);
		regist_syscall_num(MKDIR);
	}else if(pid == 0){
		//child
		sleep(1);
		mkdir("helloworld",0777);
		_exit(-1);
	}else{
		perror("fork");
	}

	wait(NULL);
	return 0;
}