dirent.h 目录检查centos6 centos7区别

#include <dirent.h>

   std::vector<string> AVMMutiScanner::AVMMutiScannerImpl::GetModelList(const std::string &dirname)
    {   
        DIR *dp;
        struct dirent *dirp;
        std::vector<string> dirnames;

        if((dp = opendir(dirname.c_str())) == NULL)
        {   
            //cout << "Can't open " << dirname << endl;
            SetError( "read file failed." );
            return dirnames;
        }   

        while((dirp = readdir(dp)) != NULL){
            std::cout << "d_name" <<dirp->d_name << ",d_type:" << int(dirp->d_type) << std::endl;
            if(strcmp(dirp->d_name,".")==0 || strcmp(dirp->d_name,"..")==0)    ///current dir OR parrent dir
            {    
                continue;
            // dirp->d_type == 4或者dirp->d_type == DT_DIR 在centos6下可用，在centos7下不可用，centos7下=0（DT_UNKNOWN）
            }else if(dirp->d_type == DT_DIR)
            {   
                std::cout << "d_name" <<dirp->d_name << ",d_type:" << int(dirp->d_type) << std::endl;
                dirnames.push_back(dirp->d_name);
            }   
        }   
        closedir(dp);
        return dirnames;
    }   
 

[jinri@17 model]$ ls -lrt

drwxr-xr-x 2 jinri jinri 4096 Jul 14 16:58 model1
[jinri@17 model]$ uname -r
2.6.32-220.7.1.el6.x86_64

[jinri@17 test]$ ./00_basic_test sample/ff2cb5aa81f4eba371e13d6095293b7d
d_name:model1,d_type:4

10:59 $ ls -lrt
drwxr-xr-x 2 jinri jinri 32 Sep 28 12:01 mo
10:59 $ uname -r
3.10.0-327.36.3.el7.x86_64

10:52 $ ./00_basic_test sample/38810e2b94b625ab8b8fb861871602c9a415ac059c31fd1c093a20b35e26205f5bf4009024a78579c2061ad97e453a08a8a841d93fa36411af870b12c88c42a3296ae266 
d_name:.,d_type:4
d_name:..,d_type:4
d_name:mo,d_type:0

enum
  {
    DT_UNKNOWN = 0,
# define DT_UNKNOWN     DT_UNKNOWN
    DT_FIFO = 1,
# define DT_FIFO        DT_FIFO
    DT_CHR = 2,
# define DT_CHR         DT_CHR
    DT_DIR = 4,
# define DT_DIR         DT_DIR
    DT_BLK = 6,
# define DT_BLK         DT_BLK
    DT_REG = 8,
# define DT_REG         DT_REG
    DT_LNK = 10,
# define DT_LNK         DT_LNK
    DT_SOCK = 12,
# define DT_SOCK        DT_SOCK
    DT_WHT = 14
# define DT_WHT         DT_WHT
  };