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//! libc syscalls supporting `rustix::io_uring`.
use crate::backend::c;
use crate::backend::conv::{borrowed_fd, ret_owned_fd, ret_u32};
use crate::fd::{BorrowedFd, OwnedFd};
use crate::io;
use crate::io_uring::{io_uring_params, IoringEnterFlags, IoringRegisterOp};
#[inline]
pub(crate) fn io_uring_setup(entries: u32, params: &mut io_uring_params) -> io::Result<OwnedFd> {
syscall! {
fn io_uring_setup(
entries: u32,
params: *mut io_uring_params
) via SYS_io_uring_setup -> c::c_int
}
unsafe { ret_owned_fd(io_uring_setup(entries, params)) }
}
#[inline]
pub(crate) unsafe fn io_uring_register(
fd: BorrowedFd<'_>,
opcode: IoringRegisterOp,
arg: *const c::c_void,
nr_args: u32,
) -> io::Result<u32> {
syscall! {
fn io_uring_register(
fd: c::c_uint,
opcode: c::c_uint,
arg: *const c::c_void,
nr_args: c::c_uint
) via SYS_io_uring_register -> c::c_int
}
ret_u32(io_uring_register(
borrowed_fd(fd) as _,
opcode as u32,
arg,
nr_args,
))
}
#[inline]
pub(crate) unsafe fn io_uring_enter(
fd: BorrowedFd<'_>,
to_submit: u32,
min_complete: u32,
flags: IoringEnterFlags,
arg: *const c::c_void,
size: usize,
) -> io::Result<u32> {
syscall! {
fn io_uring_enter2(
fd: c::c_uint,
to_submit: c::c_uint,
min_complete: c::c_uint,
flags: c::c_uint,
arg: *const c::c_void,
size: usize
) via SYS_io_uring_enter -> c::c_int
}
ret_u32(io_uring_enter2(
borrowed_fd(fd) as _,
to_submit,
min_complete,
bitflags_bits!(flags),
arg,
size,
))
}