1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
use super::super::c;
use bitflags::bitflags;
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_uint {
/// `FD_CLOEXEC`
const CLOEXEC = linux_raw_sys::general::FD_CLOEXEC;
}
}
bitflags! {
/// `RWF_*` constants for use with [`preadv2`] and [`pwritev2`].
///
/// [`preadv2`]: crate::io::preadv2
/// [`pwritev2`]: crate::io::pwritev
pub struct ReadWriteFlags: c::c_uint {
/// `RWF_DSYNC` (since Linux 4.7)
const DSYNC = linux_raw_sys::general::RWF_DSYNC;
/// `RWF_HIPRI` (since Linux 4.6)
const HIPRI = linux_raw_sys::general::RWF_HIPRI;
/// `RWF_SYNC` (since Linux 4.7)
const SYNC = linux_raw_sys::general::RWF_SYNC;
/// `RWF_NOWAIT` (since Linux 4.14)
const NOWAIT = linux_raw_sys::general::RWF_NOWAIT;
/// `RWF_APPEND` (since Linux 4.16)
const APPEND = linux_raw_sys::general::RWF_APPEND;
}
}
#[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 = linux_raw_sys::general::SPLICE_F_MOVE;
/// `SPLICE_F_NONBLOCK`
const NONBLOCK = linux_raw_sys::general::SPLICE_F_NONBLOCK;
/// `SPLICE_F_MORE`
const MORE = linux_raw_sys::general::SPLICE_F_MORE;
/// `SPLICE_F_GIFT`
const GIFT = linux_raw_sys::general::SPLICE_F_GIFT;
}
}
bitflags! {
/// `O_*` constants for use with [`dup2`].
///
/// [`dup2`]: crate::io::dup2
pub struct DupFlags: c::c_uint {
/// `O_CLOEXEC`
const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
}
}
bitflags! {
/// `O_*` constants for use with [`pipe_with`].
///
/// [`pipe_with`]: crate::io::pipe_with
pub struct PipeFlags: c::c_uint {
/// `O_CLOEXEC`
const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
/// `O_DIRECT`
const DIRECT = linux_raw_sys::general::O_DIRECT;
/// `O_NONBLOCK`
const NONBLOCK = linux_raw_sys::general::O_NONBLOCK;
}
}
bitflags! {
/// `EFD_*` flags for use with [`eventfd`].
///
/// [`eventfd`]: crate::io::eventfd
pub struct EventfdFlags: c::c_uint {
/// `EFD_CLOEXEC`
const CLOEXEC = linux_raw_sys::general::EFD_CLOEXEC;
/// `EFD_NONBLOCK`
const NONBLOCK = linux_raw_sys::general::EFD_NONBLOCK;
/// `EFD_SEMAPHORE`
const SEMAPHORE = linux_raw_sys::general::EFD_SEMAPHORE;
}
}
/// `PIPE_BUF`—The maximum size of a write to a pipe guaranteed to be atomic.
pub const PIPE_BUF: usize = linux_raw_sys::general::PIPE_BUF as usize;
pub(crate) const AT_FDCWD: c::c_int = linux_raw_sys::general::AT_FDCWD;
pub(crate) const STDIN_FILENO: c::c_uint = linux_raw_sys::general::STDIN_FILENO;
pub(crate) const STDOUT_FILENO: c::c_uint = linux_raw_sys::general::STDOUT_FILENO;
pub(crate) const STDERR_FILENO: c::c_uint = linux_raw_sys::general::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.
#[repr(transparent)]
pub struct IoSliceRaw<'a> {
_buf: c::iovec,
_lifetime: PhantomData<&'a ()>,
}
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,
}
}
}