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Merge pull request #298 from mahkoh/jorth/drm-blocking

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metal: unset O_NONBLOCK for DRM file descriptors
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mahkoh 2024-10-19 09:03:29 +02:00 • committed by GitHub
commit b7b32273be
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2 changed files with 17 additions and 2 deletions
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11
src/backends/metal/monitor.rs
View file

@ -8,7 +8,10 @@ use {
dbus::{DbusError, TRUE},
udev::UdevDevice,
utils::{
bitflags::BitflagsExt, cell_ext::CellExt, errorfmt::ErrorFmt, nonblock::set_nonblock,
bitflags::BitflagsExt,
cell_ext::CellExt,
errorfmt::ErrorFmt,
nonblock::{set_block, set_nonblock},
},
video::drm::DrmMaster,
wire_dbus::org::freedesktop::login1::session::{
@ -236,6 +239,12 @@ impl MetalBackend {
return;
}
};
if let Err(e) = set_block(res.fd.raw()) {
log::error!(
"Could not set drm file descriptor to blocking: {}",
ErrorFmt(e),
);
}
let master = match DrmMaster::new(&slf.state.ring, res.fd.clone()) {
Ok(m) => Rc::new(m),
Err(e) => {

8
src/utils/nonblock.rs
View file

@ -2,6 +2,12 @@ use {crate::utils::oserror::OsError, uapi::c};
pub fn set_nonblock(fd: c::c_int) -> Result<(), OsError> {
let fl = uapi::fcntl_getfl(fd)?;
uapi::fcntl_setfl(fd, fl | c::SOCK_NONBLOCK)?;
uapi::fcntl_setfl(fd, fl | c::O_NONBLOCK)?;
Ok(())
}
pub fn set_block(fd: c::c_int) -> Result<(), OsError> {
let fl = uapi::fcntl_getfl(fd)?;
uapi::fcntl_setfl(fd, fl & !c::O_NONBLOCK)?;
Ok(())
}