easydrm 0.1.0

GLFW-inspired abstraction over DRM/KMS, GBM, and EGL/OpenGL that lets you build fullscreen Linux applications without a compositor (no X11, no Wayland).
Documentation 
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use std::os::fd::{AsRawFd, OwnedFd};

use nix::{sys::socket::*};

pub(crate) struct UEventSocket {
    pub(crate) fd: OwnedFd,
}

impl UEventSocket {
    pub(crate) fn open() -> nix::Result<Self> {
        // criar socket netlink para uevents do kernel
        let fd = socket(
            AddressFamily::Netlink,
            SockType::Datagram,
            SockFlag::empty(),
            Some(SockProtocol::NetlinkKObjectUEvent),
        )?;

        // subscrever o grupo 1 (kernel uevents)
        let addr = NetlinkAddr::new(0, 1);
        bind(fd.as_raw_fd(), &addr)?;
        Ok(Self { fd })
    }
    pub(crate) fn has_hotplug_event(&self) -> nix::Result<bool> {
        let mut buf = [0u8; 4096];
        let len = recv(
            self.fd.as_raw_fd(),
            &mut buf,
            nix::sys::socket::MsgFlags::empty(),
        )?;
        let msg = std::str::from_utf8(&buf[..len]).unwrap_or("");

        // procurar sinais de hotplug DRM
        let is_drm_hotplug = msg.contains("SUBSYSTEM=drm")
            && msg.contains("HOTPLUG=1")
            && (msg.contains("DEVTYPE=connector") || msg.contains("DEVNAME=card"));

        Ok(is_drm_hotplug)
    }
}