linux/unix文件编程－－－简单例子

#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <string>
#include <iostream>

int main(int argc, char* argv[])
{
  struct stat file_attr;
 
  if (stat(argv[0], &file_attr) == -1)
    {
      perror("stat failure");
      return -1;
    }
  std::string file_attr_name;
  if (S_ISDIR(file_attr.st_mode))
    {
      file_attr_name = "file is dir";
    }
  else if (S_ISREG(file_attr.st_mode))
    {
      file_attr_name = "file is normal";
    }
  else if (S_ISBLK(file_attr.st_mode))
    {
      file_attr_name = "file is block device";
    }
  else if (S_ISCHR(file_attr.st_mode))
    {
      file_attr_name = "file is char device";
    }
  else if (S_ISFIFO(file_attr.st_mode))
    {
      file_attr_name = "file is FIFO";
    }
  else if (S_ISSOCK(file_attr.st_mode))
    {
      file_attr_name = "file is socket";
    }
  else if (S_ISLNK(file_attr.st_mode))
    {
      file_attr_name = "file is link";
    }
  else
    {
      file_attr_name = "unkown file type";
    }
  std::cout<<file_attr_name<<std::endl;
  return 0;
}