ubuntu获取usb盘挂载点小程序

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <linux/kernel>

static unsigned long get_file_size(const char *path)
{
    struct stat statbuff;
    if(stat(path, &statbuff) >= 0){
        return statbuff.st_size;
    }
    return -1;
}

static unsigned int print_mount_point(void)

{
    int fd = -1;
    int size = 0;
    int i = 0;
    int j = 0;
    char strBuf[100];
    char *p;

    system("cat /proc/mounts > ./.1.txt");
    unsigned long fileSize = get_file_size("./.1.txt");
    system("rm ./.1.txt");

    char *buffer = (char *)malloc(fileSize + 1);
    char *tmpBuf = (char *)malloc(fileSize + 1);
    if(NULL == buffer || NULL == tmpBuf)
    {
        printf("%s malloc error \n", __func__);
        return -1;
    }
    fd = open("/proc/mounts", O_RDONLY);
    if(-1 == fd)
    {
        printf("%s open error \n", __func__);
        return -1;
    }
    size = read(fd, buffer, fileSize);
    if(size != fileSize)
    {
        printf("%s read file len error \n", __func__);
        close(fd);
        return -1;
    }
    buffer[fileSize] = '\0';
    close(fd);

    p = buffer;
    while(i<fileSize)

  while(i<fileSize)
  {
        memset(tmpBuf, 0xff, sizeof(tmpBuf));
        j = i;
        while((i<fileSize) && (*p != '\0'))
        {
            tmpBuf[i] = *p;
            i++;
            p++;
            if((*p == ' ') || (*p == '\n'))
            {
                break;
            }
        }
        tmpBuf[i] = '\0';

        if(NULL != strstr(&tmpBuf[j], "media"))
        {
            memset(strBuf, 0xff, 100);
            sprintf(strBuf, "USB disk mount point : %s ", &tmpBuf[j]);
            printf("%s \n", strBuf);
        }
    }

    free(buffer);
    free(tmpBuf);

    return 0;
}

void main(void)

{

print_mount_point();

}