diff options
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/event/syscalls.rs')
-rw-r--r-- | vendor/rustix/src/backend/linux_raw/event/syscalls.rs | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/event/syscalls.rs b/vendor/rustix/src/backend/linux_raw/event/syscalls.rs deleted file mode 100644 index 0ae7753..0000000 --- a/vendor/rustix/src/backend/linux_raw/event/syscalls.rs +++ /dev/null @@ -1,152 +0,0 @@ -//! linux_raw syscalls supporting `rustix::event`. -//! -//! # Safety -//! -//! See the `rustix::backend` module documentation for details. -#![allow(unsafe_code, clippy::undocumented_unsafe_blocks)] - -use crate::backend::c; -#[cfg(feature = "alloc")] -use crate::backend::conv::pass_usize; -use crate::backend::conv::{ - by_ref, c_int, c_uint, raw_fd, ret, ret_error, ret_owned_fd, ret_usize, slice_mut, zero, -}; -use crate::event::{epoll, EventfdFlags, PollFd}; -use crate::fd::{BorrowedFd, OwnedFd}; -use crate::io; -use linux_raw_sys::general::{EPOLL_CTL_ADD, EPOLL_CTL_DEL, EPOLL_CTL_MOD}; -#[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] -use { - crate::backend::conv::{opt_ref, size_of}, - linux_raw_sys::general::{__kernel_timespec, kernel_sigset_t}, -}; - -#[inline] -pub(crate) fn poll(fds: &mut [PollFd<'_>], timeout: c::c_int) -> io::Result<usize> { - let (fds_addr_mut, fds_len) = slice_mut(fds); - - #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] - unsafe { - let timeout = if timeout >= 0 { - Some(__kernel_timespec { - tv_sec: (timeout as i64) / 1000, - tv_nsec: (timeout as i64) % 1000 * 1_000_000, - }) - } else { - None - }; - ret_usize(syscall!( - __NR_ppoll, - fds_addr_mut, - fds_len, - opt_ref(timeout.as_ref()), - zero(), - size_of::<kernel_sigset_t, _>() - )) - } - #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))] - unsafe { - ret_usize(syscall!(__NR_poll, fds_addr_mut, fds_len, c_int(timeout))) - } -} - -#[inline] -pub(crate) fn epoll_create(flags: epoll::CreateFlags) -> io::Result<OwnedFd> { - unsafe { ret_owned_fd(syscall_readonly!(__NR_epoll_create1, flags)) } -} - -#[inline] -pub(crate) unsafe fn epoll_add( - epfd: BorrowedFd<'_>, - fd: c::c_int, - event: &epoll::Event, -) -> io::Result<()> { - ret(syscall_readonly!( - __NR_epoll_ctl, - epfd, - c_uint(EPOLL_CTL_ADD), - raw_fd(fd), - by_ref(event) - )) -} - -#[inline] -pub(crate) unsafe fn epoll_mod( - epfd: BorrowedFd<'_>, - fd: c::c_int, - event: &epoll::Event, -) -> io::Result<()> { - ret(syscall_readonly!( - __NR_epoll_ctl, - epfd, - c_uint(EPOLL_CTL_MOD), - raw_fd(fd), - by_ref(event) - )) -} - -#[inline] -pub(crate) unsafe fn epoll_del(epfd: BorrowedFd<'_>, fd: c::c_int) -> io::Result<()> { - ret(syscall_readonly!( - __NR_epoll_ctl, - epfd, - c_uint(EPOLL_CTL_DEL), - raw_fd(fd), - zero() - )) -} - -#[cfg(feature = "alloc")] -#[inline] -pub(crate) fn epoll_wait( - epfd: BorrowedFd<'_>, - events: *mut epoll::Event, - num_events: usize, - timeout: c::c_int, -) -> io::Result<usize> { - #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))] - unsafe { - ret_usize(syscall!( - __NR_epoll_wait, - epfd, - events, - pass_usize(num_events), - c_int(timeout) - )) - } - #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] - unsafe { - ret_usize(syscall!( - __NR_epoll_pwait, - epfd, - events, - pass_usize(num_events), - c_int(timeout), - zero() - )) - } -} - -#[inline] -pub(crate) fn eventfd(initval: u32, flags: EventfdFlags) -> io::Result<OwnedFd> { - unsafe { ret_owned_fd(syscall_readonly!(__NR_eventfd2, c_uint(initval), flags)) } -} - -#[inline] -pub(crate) fn pause() { - unsafe { - #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] - let error = ret_error(syscall_readonly!( - __NR_ppoll, - zero(), - zero(), - zero(), - zero() - )); - - #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))] - let error = ret_error(syscall_readonly!(__NR_pause)); - - debug_assert_eq!(error, io::Errno::INTR); - } -} |