# std::filesystem::file_status::permissions

From cppreference.com
< cpp‎ | filesystem‎ | file status

std::filesystem::perms permissions() const noexcept; | (1) | (since C++17)
void permissions( std::filesystem::perms perm ) noexcept; | (2) | (since C++17)

Accesses the file permissions information.

1) Returns file permissions information.
2) Sets file permissions to perm.

### Parameters

perm | - | file permissions to set to

### Return value

1) File permissions information.
2) (none)

### Example

Run this code

    #include <filesystem>
    #include <fstream>
    #include <iostream>

    void demo_perms(std::filesystem::perms p)
    {
        using std::filesystem::perms;
        auto show = [=](char op, perms perm)
        {
            std::cout << (perms::none == (perm & p) ? '-' : op);
        };
        show('r', perms::owner_read);
        show('w', perms::owner_write);
        show('x', perms::owner_exec);
        show('r', perms::group_read);
        show('w', perms::group_write);
        show('x', perms::group_exec);
        show('r', perms::others_read);
        show('w', perms::others_write);
        show('x', perms::others_exec);
        std::cout << '\n';
    }

    int main()
    {
        std::ofstream("test.txt"); // create file

        std::cout << "Created file with permissions: ";
        demo_perms(std::filesystem::status("test.txt").permissions());

        std::filesystem::permissions(
            "test.txt",
            std::filesystem::perms::owner_all | std::filesystem::perms::group_all,
            std::filesystem::perm_options::add
        );

        std::cout << "After adding u+rwx and g+rwx:  ";
        demo_perms(std::filesystem::status("test.txt").permissions());

        std::filesystem::remove("test.txt");
    }

Possible output:

    Created file with permissions: rw-r--r--
    After adding u+rwx and g+wrx:  rwxrwxr--

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