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
|
#[cfg(linux_kernel)]
use core::marker::PhantomData;
#[cfg(not(any(apple, target_os = "wasi")))]
use {crate::backend::c, bitflags::bitflags};
#[cfg(not(any(apple, target_os = "wasi")))]
bitflags! {
/// `O_*` constants for use with [`pipe_with`].
///
/// [`pipe_with`]: crate::io::pipe_with
#[repr(transparent)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
pub struct PipeFlags: u32 {
/// `O_CLOEXEC`
const CLOEXEC = bitcast!(c::O_CLOEXEC);
/// `O_DIRECT`
#[cfg(not(any(
solarish,
target_os = "espidf",
target_os = "haiku",
target_os = "nto",
target_os = "openbsd",
target_os = "redox",
)))]
const DIRECT = bitcast!(c::O_DIRECT);
/// `O_NONBLOCK`
const NONBLOCK = bitcast!(c::O_NONBLOCK);
}
}
#[cfg(linux_kernel)]
bitflags! {
/// `SPLICE_F_*` constants for use with [`splice`], [`vmsplice`],
/// and [`tee`].
#[repr(transparent)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
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;
}
}
/// 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(linux_kernel)]
#[repr(transparent)]
pub struct IoSliceRaw<'a> {
_buf: c::iovec,
_lifetime: PhantomData<&'a ()>,
}
#[cfg(linux_kernel)]
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,
}
}
}
#[cfg(not(any(apple, target_os = "wasi")))]
#[test]
fn test_types() {
assert_eq_size!(PipeFlags, c::c_int);
#[cfg(linux_kernel)]
assert_eq_size!(SpliceFlags, c::c_int);
}
|
