diff options
Diffstat (limited to 'vendor/rustix/src/backend/libc/net/syscalls.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/net/syscalls.rs | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/vendor/rustix/src/backend/libc/net/syscalls.rs b/vendor/rustix/src/backend/libc/net/syscalls.rs deleted file mode 100644 index aafea002..00000000 --- a/vendor/rustix/src/backend/libc/net/syscalls.rs +++ /dev/null @@ -1,438 +0,0 @@ -//! libc syscalls supporting `rustix::net`. - -use super::read_sockaddr::initialize_family_to_unspec; -use super::send_recv::{RecvFlags, SendFlags}; -use crate::backend::c; -#[cfg(target_os = "linux")] -use crate::backend::conv::ret_u32; -use crate::backend::conv::{borrowed_fd, ret, ret_owned_fd, ret_send_recv, send_recv_len}; -use crate::fd::{BorrowedFd, OwnedFd}; -use crate::io; -use crate::net::addr::SocketAddrArg; -#[cfg(target_os = "linux")] -use crate::net::MMsgHdr; -use crate::net::{ - AddressFamily, Protocol, Shutdown, SocketAddrAny, SocketAddrBuf, SocketFlags, SocketType, -}; -use crate::utils::as_ptr; -use core::mem::{size_of, MaybeUninit}; -use core::ptr::null_mut; -#[cfg(not(any( - windows, - target_os = "espidf", - target_os = "horizon", - target_os = "redox", - target_os = "vita" -)))] -use { - super::msghdr::{noaddr_msghdr, with_msghdr, with_recv_msghdr}, - super::send_recv::ReturnFlags, - crate::io::{IoSlice, IoSliceMut}, - crate::net::{RecvAncillaryBuffer, RecvMsg, SendAncillaryBuffer}, -}; - -pub(crate) unsafe fn recv( - fd: BorrowedFd<'_>, - buf: (*mut u8, usize), - flags: RecvFlags, -) -> io::Result<usize> { - ret_send_recv(c::recv( - borrowed_fd(fd), - buf.0.cast(), - send_recv_len(buf.1), - bitflags_bits!(flags), - )) -} - -pub(crate) fn send(fd: BorrowedFd<'_>, buf: &[u8], flags: SendFlags) -> io::Result<usize> { - unsafe { - ret_send_recv(c::send( - borrowed_fd(fd), - buf.as_ptr().cast(), - send_recv_len(buf.len()), - bitflags_bits!(flags), - )) - } -} - -pub(crate) unsafe fn recvfrom( - fd: BorrowedFd<'_>, - buf: (*mut u8, usize), - flags: RecvFlags, -) -> io::Result<(usize, Option<SocketAddrAny>)> { - let mut addr = SocketAddrBuf::new(); - - // `recvfrom` does not write to the storage if the socket is - // connection-oriented sockets, so we initialize the family field to - // `AF_UNSPEC` so that we can detect this case. - initialize_family_to_unspec(addr.storage.as_mut_ptr().cast::<c::sockaddr>()); - - let nread = ret_send_recv(c::recvfrom( - borrowed_fd(fd), - buf.0.cast(), - send_recv_len(buf.1), - bitflags_bits!(flags), - addr.storage.as_mut_ptr().cast::<c::sockaddr>(), - &mut addr.len, - ))?; - - Ok((nread, addr.into_any_option())) -} - -pub(crate) fn sendto( - fd: BorrowedFd<'_>, - buf: &[u8], - flags: SendFlags, - addr: &impl SocketAddrArg, -) -> io::Result<usize> { - unsafe { - addr.with_sockaddr(|addr_ptr, addr_len| { - ret_send_recv(c::sendto( - borrowed_fd(fd), - buf.as_ptr().cast(), - send_recv_len(buf.len()), - bitflags_bits!(flags), - addr_ptr.cast(), - bitcast!(addr_len), - )) - }) - } -} - -pub(crate) fn socket( - domain: AddressFamily, - type_: SocketType, - protocol: Option<Protocol>, -) -> io::Result<OwnedFd> { - let raw_protocol = match protocol { - Some(p) => p.0.get(), - None => 0, - }; - unsafe { - ret_owned_fd(c::socket( - domain.0 as c::c_int, - type_.0 as c::c_int, - raw_protocol as c::c_int, - )) - } -} - -pub(crate) fn socket_with( - domain: AddressFamily, - type_: SocketType, - flags: SocketFlags, - protocol: Option<Protocol>, -) -> io::Result<OwnedFd> { - let raw_protocol = match protocol { - Some(p) => p.0.get(), - None => 0, - }; - unsafe { - ret_owned_fd(c::socket( - domain.0 as c::c_int, - (type_.0 | flags.bits()) as c::c_int, - raw_protocol as c::c_int, - )) - } -} - -pub(crate) fn bind(sockfd: BorrowedFd<'_>, addr: &impl SocketAddrArg) -> io::Result<()> { - unsafe { - addr.with_sockaddr(|addr_ptr, addr_len| { - ret(c::bind( - borrowed_fd(sockfd), - addr_ptr.cast(), - bitcast!(addr_len), - )) - }) - } -} - -pub(crate) fn connect(sockfd: BorrowedFd<'_>, addr: &impl SocketAddrArg) -> io::Result<()> { - unsafe { - addr.with_sockaddr(|addr_ptr, addr_len| { - ret(c::connect( - borrowed_fd(sockfd), - addr_ptr.cast(), - bitcast!(addr_len), - )) - }) - } -} - -pub(crate) fn connect_unspec(sockfd: BorrowedFd<'_>) -> io::Result<()> { - debug_assert_eq!(c::AF_UNSPEC, 0); - let addr = MaybeUninit::<c::sockaddr_storage>::zeroed(); - unsafe { - ret(c::connect( - borrowed_fd(sockfd), - as_ptr(&addr).cast(), - size_of::<c::sockaddr_storage>() as c::socklen_t, - )) - } -} - -pub(crate) fn listen(sockfd: BorrowedFd<'_>, backlog: c::c_int) -> io::Result<()> { - unsafe { ret(c::listen(borrowed_fd(sockfd), backlog)) } -} - -pub(crate) fn accept(sockfd: BorrowedFd<'_>) -> io::Result<OwnedFd> { - unsafe { - let owned_fd = ret_owned_fd(c::accept(borrowed_fd(sockfd), null_mut(), null_mut()))?; - Ok(owned_fd) - } -} - -#[cfg(not(any( - windows, - target_os = "espidf", - target_os = "horizon", - target_os = "redox", - target_os = "vita" -)))] -pub(crate) fn recvmsg( - sockfd: BorrowedFd<'_>, - iov: &mut [IoSliceMut<'_>], - control: &mut RecvAncillaryBuffer<'_>, - msg_flags: RecvFlags, -) -> io::Result<RecvMsg> { - let mut addr = SocketAddrBuf::new(); - - // SAFETY: This passes the `msghdr` reference to the OS which reads the - // buffers only within the designated bounds. - let (bytes, flags) = unsafe { - with_recv_msghdr(&mut addr, iov, control, |msghdr| { - let bytes = ret_send_recv(c::recvmsg( - borrowed_fd(sockfd), - msghdr, - bitflags_bits!(msg_flags), - ))?; - Ok((bytes, msghdr.msg_flags)) - })? - }; - - Ok(RecvMsg { - bytes, - address: unsafe { addr.into_any_option() }, - flags: ReturnFlags::from_bits_retain(bitcast!(flags)), - }) -} - -#[cfg(not(any( - windows, - target_os = "espidf", - target_os = "horizon", - target_os = "redox", - target_os = "vita" -)))] -pub(crate) fn sendmsg( - sockfd: BorrowedFd<'_>, - iov: &[IoSlice<'_>], - control: &mut SendAncillaryBuffer<'_, '_, '_>, - msg_flags: SendFlags, -) -> io::Result<usize> { - let msghdr = noaddr_msghdr(iov, control); - unsafe { - ret_send_recv(c::sendmsg( - borrowed_fd(sockfd), - &msghdr, - bitflags_bits!(msg_flags), - )) - } -} - -#[cfg(not(any( - windows, - target_os = "espidf", - target_os = "horizon", - target_os = "redox", - target_os = "vita" -)))] -pub(crate) fn sendmsg_addr( - sockfd: BorrowedFd<'_>, - addr: &impl SocketAddrArg, - iov: &[IoSlice<'_>], - control: &mut SendAncillaryBuffer<'_, '_, '_>, - msg_flags: SendFlags, -) -> io::Result<usize> { - // SAFETY: This passes the `msghdr` reference to the OS which reads the - // buffers only within the designated bounds. - unsafe { - with_msghdr(addr, iov, control, |msghdr| { - ret_send_recv(c::sendmsg( - borrowed_fd(sockfd), - msghdr, - bitflags_bits!(msg_flags), - )) - }) - } -} - -#[cfg(target_os = "linux")] -pub(crate) fn sendmmsg( - sockfd: BorrowedFd<'_>, - msgs: &mut [MMsgHdr<'_>], - flags: SendFlags, -) -> io::Result<usize> { - unsafe { - ret_u32(c::sendmmsg( - borrowed_fd(sockfd), - msgs.as_mut_ptr() as _, - msgs.len().try_into().unwrap_or(c::c_uint::MAX), - bitflags_bits!(flags), - )) - .map(|ret| ret as usize) - } -} - -#[cfg(not(any( - apple, - windows, - target_os = "aix", - target_os = "espidf", - target_os = "haiku", - target_os = "horizon", - target_os = "nto", - target_os = "redox", - target_os = "vita", -)))] -pub(crate) fn accept_with(sockfd: BorrowedFd<'_>, flags: SocketFlags) -> io::Result<OwnedFd> { - unsafe { - let owned_fd = ret_owned_fd(c::accept4( - borrowed_fd(sockfd), - null_mut(), - null_mut(), - flags.bits() as c::c_int, - ))?; - Ok(owned_fd) - } -} - -pub(crate) fn acceptfrom(sockfd: BorrowedFd<'_>) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> { - unsafe { - let mut addr = SocketAddrBuf::new(); - let owned_fd = ret_owned_fd(c::accept( - borrowed_fd(sockfd), - addr.storage.as_mut_ptr().cast::<c::sockaddr>(), - &mut addr.len, - ))?; - Ok((owned_fd, addr.into_any_option())) - } -} - -#[cfg(not(any( - apple, - windows, - target_os = "aix", - target_os = "espidf", - target_os = "haiku", - target_os = "horizon", - target_os = "nto", - target_os = "redox", - target_os = "vita", -)))] -pub(crate) fn acceptfrom_with( - sockfd: BorrowedFd<'_>, - flags: SocketFlags, -) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> { - unsafe { - let mut addr = SocketAddrBuf::new(); - let owned_fd = ret_owned_fd(c::accept4( - borrowed_fd(sockfd), - addr.storage.as_mut_ptr().cast::<c::sockaddr>(), - &mut addr.len, - flags.bits() as c::c_int, - ))?; - Ok((owned_fd, addr.into_any_option())) - } -} - -/// Darwin lacks `accept4`, but does have `accept`. We define `SocketFlags` to -/// have no flags, so we can discard it here. -#[cfg(any( - apple, - windows, - target_os = "aix", - target_os = "espidf", - target_os = "haiku", - target_os = "horizon", - target_os = "nto", - target_os = "redox", - target_os = "vita", -))] -pub(crate) fn accept_with(sockfd: BorrowedFd<'_>, _flags: SocketFlags) -> io::Result<OwnedFd> { - accept(sockfd) -} - -/// Darwin lacks `accept4`, but does have `accept`. We define `SocketFlags` to -/// have no flags, so we can discard it here. -#[cfg(any( - apple, - windows, - target_os = "aix", - target_os = "espidf", - target_os = "haiku", - target_os = "horizon", - target_os = "nto", - target_os = "redox", - target_os = "vita", -))] -pub(crate) fn acceptfrom_with( - sockfd: BorrowedFd<'_>, - _flags: SocketFlags, -) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> { - acceptfrom(sockfd) -} - -pub(crate) fn shutdown(sockfd: BorrowedFd<'_>, how: Shutdown) -> io::Result<()> { - unsafe { ret(c::shutdown(borrowed_fd(sockfd), how as c::c_int)) } -} - -pub(crate) fn getsockname(sockfd: BorrowedFd<'_>) -> io::Result<SocketAddrAny> { - unsafe { - let mut addr = SocketAddrBuf::new(); - ret(c::getsockname( - borrowed_fd(sockfd), - addr.storage.as_mut_ptr().cast::<c::sockaddr>(), - &mut addr.len, - ))?; - Ok(addr.into_any()) - } -} - -pub(crate) fn getpeername(sockfd: BorrowedFd<'_>) -> io::Result<Option<SocketAddrAny>> { - unsafe { - let mut addr = SocketAddrBuf::new(); - ret(c::getpeername( - borrowed_fd(sockfd), - addr.storage.as_mut_ptr().cast::<c::sockaddr>(), - &mut addr.len, - ))?; - Ok(addr.into_any_option()) - } -} - -#[cfg(not(windows))] -pub(crate) fn socketpair( - domain: AddressFamily, - type_: SocketType, - flags: SocketFlags, - protocol: Option<Protocol>, -) -> io::Result<(OwnedFd, OwnedFd)> { - let raw_protocol = match protocol { - Some(p) => p.0.get(), - None => 0, - }; - unsafe { - let mut fds = MaybeUninit::<[OwnedFd; 2]>::uninit(); - ret(c::socketpair( - c::c_int::from(domain.0), - (type_.0 | flags.bits()) as c::c_int, - raw_protocol as c::c_int, - fds.as_mut_ptr().cast::<c::c_int>(), - ))?; - - let [fd0, fd1] = fds.assume_init(); - Ok((fd0, fd1)) - } -} |
