is_writable always return false

[SamMousa]

For me is_writable always returns false because the uid and gid are always set to 0.

Currently Stat::mergeMeta() ignores any uid or gid returned from the adapter; would it not make more sense to use them if they are available?

[twistor]

I will look into this. Adapters do not return the uid or gid.

[twistor]

One option is to pass in a different permission array when registering the stream wrapper.

$options = [
        'permissions' => [
            'dir' => [
                'private' => 0700,
                'public' => 0777,
            ],
            'file' => [
                'private' => 0600,
                'public' => 0666,
            ],
        ],
    ];

FlysystemStreamWrapper::register('fly', $filesystem, $options)

[twistor]

I've added calls to either posix_getuid() or getmyuid() to set the uid and gid of returned files.