文件系统错误：无法递增递归目录迭代器

Question

Disk Partitions Information:
Drive: C:\ (Local Drive) - Total: 119 GB
Drive: D:\ (Local Drive) - Total: 341 GB
Drive: G:\ (Local Drive) - Total: 15 GB

Pick a path: C:\
"C:\\$Recycle.Bin"
"C:\\$Recycle.Bin\\S-1-5-18"
Error: Unable to iterate through the path C:\ (filesystem error: cannot increment recursive directory iterator: Invalid argument)
Permissions for "C:\\":
rwxrwxrwx
terminate called after throwing an instance of 'std::filesystem::__cxx11::filesystem_error'
  what():  filesystem error: cannot set permissions: Permission denied [C:\] 

对于 D，我只得到错误“无法迭代路径 C:\（文件系统错误：无法递增递归目录迭代器：参数无效）”

我的目标是打印目录中的所有文件，当我遇到此错误时，我认为这是有关权限或其他什么的问题，所以我尝试强制所有权限，因为这就是我以前在Python中所做的，但是我觉得在 C++ 中它不起作用。

void check_permissions(const fs::path& path) {
    fs::perms p = fs::status(path).permissions();

    std::cout << "Permissions for " << path << ":\n";
    std::cout << ((p & fs::perms::owner_read) != fs::perms::none ? "r" : "-")
              << ((p & fs::perms::owner_write) != fs::perms::none ? "w" : "-")
              << ((p & fs::perms::owner_exec) != fs::perms::none ? "x" : "-")
              << ((p & fs::perms::group_read) != fs::perms::none ? "r" : "-")
              << ((p & fs::perms::group_write) != fs::perms::none ? "w" : "-")
              << ((p & fs::perms::group_exec) != fs::perms::none ? "x" : "-")
              << ((p & fs::perms::others_read) != fs::perms::none ? "r" : "-")
              << ((p & fs::perms::others_write) != fs::perms::none ? "w" : "-")
              << ((p & fs::perms::others_exec) != fs::perms::none ? "x" : "-")
              << '\n';
}
void set_permissions(const fs::path& path, fs::perms permissions) {
    fs::permissions(path, permissions);
}

下面是打印所有文件的函数：

void list_files_recursively(const std::string& path) {
    try {
        for (fs::directory_entry entry : fs::recursive_directory_iterator(path)) {
            try {
                std::cout << entry.path() << std::endl;
            } catch (const fs::filesystem_error& e) {
                std::cerr << "Error accessing: " << entry.path() << " (" << e.what() << ")\n";
            }
        }
    } catch (const fs::filesystem_error& e) {
        std::cerr << "Error: Unable to iterate through the path " << path << " (" << e.what() << ")\n";
    }
}

使用Google驱动器G：，它可以正常工作，没有任何问题，我也尝试跳过我无权访问的文件，但不起作用。

最小可重现示例

#include <iostream>
#include <filesystem>
#include <windows.h>

namespace fs = std::filesystem; 

void print_files(const std::string& path) {
    try {
        for (const auto& entry : fs::recursive_directory_iterator(path, fs::directory_options::skip_permission_denied)) {
            try {
                std::cout << entry.path() << std::endl;
            } catch (const fs::filesystem_error& e) {
                std::cerr << "Error accessing: " << entry.path() << " (" << e.what() << ")\n";
            }
        }
    } catch (const fs::filesystem_error& e) {
        std::cerr << "Error: Unable to iterate through the path " << path << " (" << e.what() << ")\n";
    }
}

int main() {
    std::string path;
    std::cout << "Pick a path: ";
    std::cin >> path;

    print_files(path);

    return 0;
}

它返回相同的错误。

我在另一个 StackOverflow 页面上写了这个。它不适用于

C:\\

，但适用于特定文件夹，但不适用于

C:\\

。

void print_files(const std::string& path) {
    try {
        for (const auto& entry : fs::recursive_directory_iterator(path, fs::directory_options::skip_permission_denied)) {
            try {
                // Skip system and hidden files
                if ((entry.status().permissions() & fs::perms::others_read) == fs::perms::none) {
                    continue;
                }

                std::cout << "Path: " << entry.path()
                          << " | Type: " << (entry.is_directory() ? "Directory" : "File")
                          << " | Size: " << (entry.is_regular_file() ? std::to_string(entry.file_size()) + " bytes" : "N/A")
                          << std::endl;
            } catch (const fs::filesystem_error& e) {
                std::cerr << "Error accessing: " << entry.path() << " (" << e.what() << ")\n";
            }
        }
    } catch (const fs::filesystem_error& e) {
        std::cerr << "Error: Unable to iterate through the path " << path << " (" << e.what() << ")\n";
    }
}

int main() {
    std::string path;
    std::cout << "Pick a path: ";
    std::cin >> path;

    if (!fs::exists(path)) {
        std::cerr << "Error: Path does not exist.\n";
        return 1;
    }

    print_files(path);

    return 0;
}

// BUT THIS STILL DOESN'T WORK WITH C:\ 

Answer 1

正如 @PaulMcKenzie 所说，通过以管理员身份运行 VsCode 可以轻松避免此错误

要以管理员身份运行它，您可以双击 VsCode 并向下滚动选项，直到找到 以管理员身份运行

或者随时以管理员身份运行它

• 1-双击，你就是VsCode文件图标
• 2-向下滚动到属性
• 3-设置
• 4-在右上角有“高级”设置，单击此处并勾选复选框，使其以管理员身份运行应用程序
• 5-按ok箱，旁边的“高级设置箱”关闭属性，现在就好了

每次打开应用程序时都会以管理员身份运行