aboutsummaryrefslogtreecommitdiff
path: root/vendor/rustix/src/backend/linux_raw/net/msghdr.rs
diff options
context:
space:
mode:
authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rustix/src/backend/linux_raw/net/msghdr.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/net/msghdr.rs')
-rw-r--r--vendor/rustix/src/backend/linux_raw/net/msghdr.rs146
1 files changed, 0 insertions, 146 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/net/msghdr.rs b/vendor/rustix/src/backend/linux_raw/net/msghdr.rs
deleted file mode 100644
index 2b88bfb..0000000
--- a/vendor/rustix/src/backend/linux_raw/net/msghdr.rs
+++ /dev/null
@@ -1,146 +0,0 @@
-//! Utilities for dealing with message headers.
-//!
-//! These take closures rather than returning a `c::msghdr` directly because
-//! the message headers may reference stack-local data.
-
-#![allow(unsafe_code)]
-
-use crate::backend::c;
-use crate::backend::net::write_sockaddr::{encode_sockaddr_v4, encode_sockaddr_v6};
-
-use crate::io::{self, IoSlice, IoSliceMut};
-use crate::net::{RecvAncillaryBuffer, SendAncillaryBuffer, SocketAddrV4, SocketAddrV6};
-use crate::utils::as_ptr;
-
-use core::mem::{size_of, MaybeUninit};
-use core::ptr::null_mut;
-
-fn msg_iov_len(len: usize) -> c::size_t {
- // This cast cannot overflow.
- len as c::size_t
-}
-
-pub(crate) fn msg_control_len(len: usize) -> c::size_t {
- // Same as above.
- len as c::size_t
-}
-
-/// Create a message header intended to receive a datagram.
-pub(crate) fn with_recv_msghdr<R>(
- name: &mut MaybeUninit<c::sockaddr_storage>,
- iov: &mut [IoSliceMut<'_>],
- control: &mut RecvAncillaryBuffer<'_>,
- f: impl FnOnce(&mut c::msghdr) -> io::Result<R>,
-) -> io::Result<R> {
- control.clear();
-
- let namelen = size_of::<c::sockaddr_storage>() as c::c_int;
- let mut msghdr = c::msghdr {
- msg_name: name.as_mut_ptr().cast(),
- msg_namelen: namelen,
- msg_iov: iov.as_mut_ptr().cast(),
- msg_iovlen: msg_iov_len(iov.len()),
- msg_control: control.as_control_ptr().cast(),
- msg_controllen: msg_control_len(control.control_len()),
- msg_flags: 0,
- };
-
- let res = f(&mut msghdr);
-
- // Reset the control length.
- if res.is_ok() {
- unsafe {
- control.set_control_len(msghdr.msg_controllen.try_into().unwrap_or(usize::MAX));
- }
- }
-
- res
-}
-
-/// Create a message header intended to send without an address.
-pub(crate) fn with_noaddr_msghdr<R>(
- iov: &[IoSlice<'_>],
- control: &mut SendAncillaryBuffer<'_, '_, '_>,
- f: impl FnOnce(c::msghdr) -> R,
-) -> R {
- f(c::msghdr {
- msg_name: null_mut(),
- msg_namelen: 0,
- msg_iov: iov.as_ptr() as _,
- msg_iovlen: msg_iov_len(iov.len()),
- msg_control: control.as_control_ptr().cast(),
- msg_controllen: msg_control_len(control.control_len()),
- msg_flags: 0,
- })
-}
-
-/// Create a message header intended to send with an IPv4 address.
-pub(crate) fn with_v4_msghdr<R>(
- addr: &SocketAddrV4,
- iov: &[IoSlice<'_>],
- control: &mut SendAncillaryBuffer<'_, '_, '_>,
- f: impl FnOnce(c::msghdr) -> R,
-) -> R {
- let encoded = encode_sockaddr_v4(addr);
-
- f(c::msghdr {
- msg_name: as_ptr(&encoded) as _,
- msg_namelen: size_of::<SocketAddrV4>() as _,
- msg_iov: iov.as_ptr() as _,
- msg_iovlen: msg_iov_len(iov.len()),
- msg_control: control.as_control_ptr().cast(),
- msg_controllen: msg_control_len(control.control_len()),
- msg_flags: 0,
- })
-}
-
-/// Create a message header intended to send with an IPv6 address.
-pub(crate) fn with_v6_msghdr<R>(
- addr: &SocketAddrV6,
- iov: &[IoSlice<'_>],
- control: &mut SendAncillaryBuffer<'_, '_, '_>,
- f: impl FnOnce(c::msghdr) -> R,
-) -> R {
- let encoded = encode_sockaddr_v6(addr);
-
- f(c::msghdr {
- msg_name: as_ptr(&encoded) as _,
- msg_namelen: size_of::<SocketAddrV6>() as _,
- msg_iov: iov.as_ptr() as _,
- msg_iovlen: msg_iov_len(iov.len()),
- msg_control: control.as_control_ptr().cast(),
- msg_controllen: msg_control_len(control.control_len()),
- msg_flags: 0,
- })
-}
-
-/// Create a message header intended to send with a Unix address.
-pub(crate) fn with_unix_msghdr<R>(
- addr: &crate::net::SocketAddrUnix,
- iov: &[IoSlice<'_>],
- control: &mut SendAncillaryBuffer<'_, '_, '_>,
- f: impl FnOnce(c::msghdr) -> R,
-) -> R {
- f(c::msghdr {
- msg_name: as_ptr(&addr.unix) as _,
- msg_namelen: addr.addr_len() as _,
- msg_iov: iov.as_ptr() as _,
- msg_iovlen: msg_iov_len(iov.len()),
- msg_control: control.as_control_ptr().cast(),
- msg_controllen: msg_control_len(control.control_len()),
- msg_flags: 0,
- })
-}
-
-/// Create a zero-initialized message header struct value.
-pub(crate) fn zero_msghdr() -> c::msghdr {
- c::msghdr {
- msg_name: null_mut(),
- msg_namelen: 0,
- msg_iov: null_mut(),
- msg_iovlen: 0,
- msg_control: null_mut(),
- msg_controllen: 0,
- msg_flags: 0,
- }
-}