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use super::super::c;
use bitflags::bitflags;
#[cfg(any(target_os = "android", target_os = "linux"))]
use core::marker::PhantomData;
bitflags! {
/// `FD_*` constants for use with [`fcntl_getfd`] and [`fcntl_setfd`].
///
/// [`fcntl_getfd`]: crate::io::fcntl_getfd
/// [`fcntl_setfd`]: crate::io::fcntl_setfd
pub struct FdFlags: c::c_int {
/// `FD_CLOEXEC`
const CLOEXEC = c::FD_CLOEXEC;
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
bitflags! {
/// `RWF_*` constants for use with [`preadv2`] and [`pwritev2`].
///
/// [`preadv2`]: crate::io::preadv2
/// [`pwritev2`]: crate::io::pwritev
pub struct ReadWriteFlags: c::c_int {
/// `RWF_DSYNC` (since Linux 4.7)
const DSYNC = linux_raw_sys::general::RWF_DSYNC as c::c_int;
/// `RWF_HIPRI` (since Linux 4.6)
const HIPRI = linux_raw_sys::general::RWF_HIPRI as c::c_int;
/// `RWF_SYNC` (since Linux 4.7)
const SYNC = linux_raw_sys::general::RWF_SYNC as c::c_int;
/// `RWF_NOWAIT` (since Linux 4.14)
const NOWAIT = linux_raw_sys::general::RWF_NOWAIT as c::c_int;
/// `RWF_APPEND` (since Linux 4.16)
const APPEND = linux_raw_sys::general::RWF_APPEND as c::c_int;
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
bitflags! {
/// `SPLICE_F_*` constants for use with [`splice`] and [`vmsplice`].
pub struct SpliceFlags: c::c_uint {
/// `SPLICE_F_MOVE`
const MOVE = c::SPLICE_F_MOVE;
/// `SPLICE_F_NONBLOCK`
const NONBLOCK = c::SPLICE_F_NONBLOCK;
/// `SPLICE_F_MORE`
const MORE = c::SPLICE_F_MORE;
/// `SPLICE_F_GIFT`
const GIFT = c::SPLICE_F_GIFT;
}
}
#[cfg(not(target_os = "wasi"))]
bitflags! {
/// `O_*` constants for use with [`dup2`].
///
/// [`dup2`]: crate::io::dup2
pub struct DupFlags: c::c_int {
/// `O_CLOEXEC`
#[cfg(not(any(
apple,
target_os = "aix",
target_os = "android",
target_os = "redox",
)))] // Android 5.0 has dup3, but libc doesn't have bindings
const CLOEXEC = c::O_CLOEXEC;
}
}
#[cfg(not(any(apple, target_os = "wasi")))]
bitflags! {
/// `O_*` constants for use with [`pipe_with`].
///
/// [`pipe_with`]: crate::io::pipe_with
pub struct PipeFlags: c::c_int {
/// `O_CLOEXEC`
const CLOEXEC = c::O_CLOEXEC;
/// `O_DIRECT`
#[cfg(not(any(
solarish,
target_os = "haiku",
target_os = "openbsd",
target_os = "redox",
)))]
const DIRECT = c::O_DIRECT;
/// `O_NONBLOCK`
const NONBLOCK = c::O_NONBLOCK;
}
}
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "illumos",
target_os = "linux"
))]
bitflags! {
/// `EFD_*` flags for use with [`eventfd`].
///
/// [`eventfd`]: crate::io::eventfd
pub struct EventfdFlags: c::c_int {
/// `EFD_CLOEXEC`
const CLOEXEC = c::EFD_CLOEXEC;
/// `EFD_NONBLOCK`
const NONBLOCK = c::EFD_NONBLOCK;
/// `EFD_SEMAPHORE`
const SEMAPHORE = c::EFD_SEMAPHORE;
}
}
/// `PIPE_BUF`—The maximum size of a write to a pipe guaranteed to be atomic.
#[cfg(not(any(solarish, target_os = "haiku", target_os = "redox", target_os = "wasi")))]
pub const PIPE_BUF: usize = c::PIPE_BUF;
#[cfg(not(any(windows, target_os = "redox")))]
pub(crate) const AT_FDCWD: c::c_int = c::AT_FDCWD;
#[cfg(not(windows))]
pub(crate) const STDIN_FILENO: c::c_int = c::STDIN_FILENO;
#[cfg(not(windows))]
pub(crate) const STDOUT_FILENO: c::c_int = c::STDOUT_FILENO;
#[cfg(not(windows))]
pub(crate) const STDERR_FILENO: c::c_int = c::STDERR_FILENO;
/// A buffer type used with `vmsplice`.
/// It is guaranteed to be ABI compatible with the iovec type on Unix platforms
/// and `WSABUF` on Windows. Unlike `IoSlice` and `IoSliceMut` it is
/// semantically like a raw pointer, and therefore can be shared or mutated as
/// needed.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[repr(transparent)]
pub struct IoSliceRaw<'a> {
_buf: c::iovec,
_lifetime: PhantomData<&'a ()>,
}
#[cfg(any(target_os = "android", target_os = "linux"))]
impl<'a> IoSliceRaw<'a> {
/// Creates a new `IoSlice` wrapping a byte slice.
pub fn from_slice(buf: &'a [u8]) -> Self {
IoSliceRaw {
_buf: c::iovec {
iov_base: buf.as_ptr() as *mut u8 as *mut c::c_void,
iov_len: buf.len() as _,
},
_lifetime: PhantomData,
}
}
/// Creates a new `IoSlice` wrapping a mutable byte slice.
pub fn from_slice_mut(buf: &'a mut [u8]) -> Self {
IoSliceRaw {
_buf: c::iovec {
iov_base: buf.as_mut_ptr() as *mut c::c_void,
iov_len: buf.len() as _,
},
_lifetime: PhantomData,
}
}
}
|
