执行opendir：打开的文件太多 [英] opendir: Too many open files

问题描述

在我写这篇code打印中的所有文件 /家庭/保持与赦免路径：

I write this code to print all files in /home/keep with absolution path:

#include <dirent.h>
#include <sys/stat.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

void catDIR(const char *re_path);

int main(int argc, char *argv[])
{
    char *top_path = "/home/keep";
    catDIR(top_path);
    return 0;
}

void catDIR(const char *re_path)
{
    DIR *dp;
    struct stat file_info;
    struct dirent *entry;

    if ((dp = opendir(re_path)) == NULL)
    {
        perror("opendir");
        return;
    }
    while (entry = readdir(dp))
    {
        if (entry->d_name[0] == '.')
            continue;

        //get Absolute path
        char next_path[PATH_MAX];
        strcpy(next_path, re_path);
        strcat(next_path, "/");
        strcat(next_path, entry->d_name);

        lstat(next_path, &file_info);

        if (S_ISDIR(file_info.st_mode))
        {
            catDIR(next_path);
        }
        else
        {
            printf("%s/%s\n", re_path, entry->d_name);
        }
    }
    free(dp);
    free(entry);
}

当我运行它。

不仅打印一些文件的路径，还打印一些错误信息：

Not only print some file's path, but also print some error message:

执行opendir：打开的文件太多

我读男子3执行opendir ，随后发现，我已经打开太多的文件。

I read man 3 opendir, then realize, I had opened too many files.

我也想知道，怎么关闭它？以及如何纠正这一计划

I do want to know, how to close it? and how to correct this program

推荐答案

您也许应该使用 closedir 当您完成通过目录中的内容进行迭代。

You should probably use closedir when you finish iterating through a directory's contents.

此外，您可能要读取目录的上市到一个数组，关闭目录，然后阵列上的递归。这可能帮助遍历非常深的目录结构。

Also, you might want to read the directory's listing into an array, close the directory, and then recurse on the array. This might help with traversing very deep directory structures.

这篇关于执行opendir：打开的文件太多的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！