readdir()返回文件名时,stat()错误'没有这样的文件或目录'

Question

我无法识别stat抛出的错误.以下程序读取目录中的所有文件并打印文件名:

DIR *dp;
struct dirent *dirp;
struct stat sb;

if((dp = opendir(argv[1]))==NULL)
{
    perror("can't open dir");
}
while((dirp = readdir(dp))!=NULL)
{
    if (stat(dirp->d_name, &sb) == -1) {
        perror("stat");
    }   
    printf("File name:               %s \n",dirp->d_name);
}

样本输出:

/home/eipe
stat error: No such file or directory
File name:               copyofsample 
File name:               a.out 
File name:               . 
stat error: No such file or directory
File name:               udpclient.c 
File name:               .. 
stat error: No such file or directory
File name:               client.c 
stat error: No such file or directory
File name:               ftpclient.c 

以下是内容:

ls -l /home/eipe/c

-rwxr-xr-x 1 eipe egroup 7751 2011-02-24 15:18 a.out
-rw-r--r-- 1 eipe egroup  798 2011-02-24 13:50 client.c
-rw-r--r-- 1 eipe egroup   15 2011-02-24 15:34 copyofsample
-rw-r--r-- 1 eipe egroup 1795 2011-02-24 15:33 ftpclient.c
-rw-r--r-- 1 eipe egroup  929 2011-02-24 13:34 udpclient.c

Answer 1

dirp->d_name是目录中文件的名称:例如,"udpclient.c".因此,文件的全名是"/home/eipe/c/udpclient.c"- 但是您当前的工作目录是/home/eipe,因此stat()尝试访问"/home/eipe/udpclient.c",这是不存在的.

您可以将工作目录更改为argv[1]使用chdir(),也可以argv[1]在调用前添加到每个文件名stat().