fix: got nvme0n when passing device name 'nvme0n1'

[cloudy064]

No description provided.

[GuillaumeGomez]

Thanks for the patch! Can you describe a bit more what's the problem and how it's solved please?

[cloudy064]

Sorry for least description first.
Problem is that I get the wrong disk type of value None for device /dev/nvme0n1, which should be SSD.
When I inspected the code, I found it evals the value of /sys/block/nvme0n/queue/rational, but the file didn't exist.

Providing device_name is /dev/nvme0n1:

fn find_type_for_device_name(device_name: &OsStr) -> DiskType {
// lots of code
    } else if device_name_path.starts_with("/dev/nvme") {
        // Turn "nvme0n1p1" into "nvme0n1"
        real_path = real_path.trim_start_matches("/dev/");                                          // real_path is *nvme0n1* here
        real_path = real_path.trim_end_matches(|c| c >= '0' && c <= '9');                  // real_path is *nvme0n* here
        real_path = real_path.trim_end_matches(|c| c == 'p');                                      // real_path is *nvme0n* here
    } 
// lots of code
}

The last number 1 is missing because of real_path.trim_end_matches(|c| c >= '0' && c <= '9');

I made some changes here as following:

fn find_type_for_device_name(device_name: &OsStr) -> DiskType {
// lots of code
        real_path = match real_path.find('p') {
            Some(idx) => &real_path["/dev/".len()..idx],
            None => &real_path["/dev/".len()..],
        };
// lots of code
}

And I got the right real_path /sys/block/nvme0n1 and right disk type SSD

All the same for device name of /dev/mmcblk0.

[cloudy064]

Before:

After:

[GuillaumeGomez]

Thanks for the explanations! Merging it then.