mount系统调用使用方法

#include <sys/types.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <stdio.h>

#define err(msg) perror(msg)

using namespace std;

int main(void)
{
        if (mount("/dev/sdb", "/sdb/", "vfat", MS_RDONLY, 0) == -1)
        {
                err("mount");
                return -1;
        }
        else
        {
                cout << "mount success" << endl;
        }

        return 0;
}