1 files changed, 0 insertions, 340 deletions
diff --git a/vendor/rustix/src/backend/libc/io/syscalls.rs b/vendor/rustix/src/backend/libc/io/syscalls.rs
deleted file mode 100644
index e28e6be..0000000
--- a/vendor/rustix/src/backend/libc/io/syscalls.rs
+++ /dev/null
@@ -1,340 +0,0 @@
-//! libc syscalls supporting `rustix::io`.
-
-use crate::backend::c;
-#[cfg(not(target_os = "wasi"))]
-use crate::backend::conv::ret_discarded_fd;
-use crate::backend::conv::{borrowed_fd, ret, ret_c_int, ret_owned_fd, ret_usize};
-use crate::fd::{AsFd, BorrowedFd, OwnedFd, RawFd};
-#[cfg(not(any(
-    target_os = "aix",
-    target_os = "espidf",
-    target_os = "nto",
-    target_os = "vita",
-    target_os = "wasi"
-)))]
-use crate::io::DupFlags;
-#[cfg(linux_kernel)]
-use crate::io::ReadWriteFlags;
-use crate::io::{self, FdFlags};
-use crate::ioctl::{IoctlOutput, RawOpcode};
-use core::cmp::min;
-#[cfg(all(feature = "fs", feature = "net"))]
-use libc_errno::errno;
-#[cfg(not(target_os = "espidf"))]
-use {
-    crate::backend::MAX_IOV,
-    crate::io::{IoSlice, IoSliceMut},
-};
-
-pub(crate) unsafe fn read(fd: BorrowedFd<'_>, buf: *mut u8, len: usize) -> io::Result<usize> {
-    ret_usize(c::read(borrowed_fd(fd), buf.cast(), min(len, READ_LIMIT)))
-}
-
-pub(crate) fn write(fd: BorrowedFd<'_>, buf: &[u8]) -> io::Result<usize> {
-    unsafe {
-        ret_usize(c::write(
-            borrowed_fd(fd),
-            buf.as_ptr().cast(),
-            min(buf.len(), READ_LIMIT),
-        ))
-    }
-}
-
-pub(crate) unsafe fn pread(
-    fd: BorrowedFd<'_>,
-    buf: *mut u8,
-    len: usize,
-    offset: u64,
-) -> io::Result<usize> {
-    let len = min(len, READ_LIMIT);
-
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-
-    // ESP-IDF and Vita don't support 64-bit offsets.
-    #[cfg(any(target_os = "espidf", target_os = "vita"))]
-    let offset: i32 = offset.try_into().map_err(|_| io::Errno::OVERFLOW)?;
-
-    ret_usize(c::pread(borrowed_fd(fd), buf.cast(), len, offset))
-}
-
-pub(crate) fn pwrite(fd: BorrowedFd<'_>, buf: &[u8], offset: u64) -> io::Result<usize> {
-    let len = min(buf.len(), READ_LIMIT);
-
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-
-    // ESP-IDF and Vita don't support 64-bit offsets.
-    #[cfg(any(target_os = "espidf", target_os = "vita"))]
-    let offset: i32 = offset.try_into().map_err(|_| io::Errno::OVERFLOW)?;
-
-    unsafe { ret_usize(c::pwrite(borrowed_fd(fd), buf.as_ptr().cast(), len, offset)) }
-}
-
-#[cfg(not(target_os = "espidf"))]
-pub(crate) fn readv(fd: BorrowedFd<'_>, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
-    unsafe {
-        ret_usize(c::readv(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-        ))
-    }
-}
-
-#[cfg(not(target_os = "espidf"))]
-pub(crate) fn writev(fd: BorrowedFd<'_>, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
-    unsafe {
-        ret_usize(c::writev(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-        ))
-    }
-}
-
-#[cfg(not(any(
-    target_os = "espidf",
-    target_os = "haiku",
-    target_os = "nto",
-    target_os = "redox",
-    target_os = "solaris",
-    target_os = "vita"
-)))]
-pub(crate) fn preadv(
-    fd: BorrowedFd<'_>,
-    bufs: &mut [IoSliceMut<'_>],
-    offset: u64,
-) -> io::Result<usize> {
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-    unsafe {
-        ret_usize(c::preadv(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-            offset,
-        ))
-    }
-}
-
-#[cfg(not(any(
-    target_os = "espidf",
-    target_os = "haiku",
-    target_os = "nto",
-    target_os = "redox",
-    target_os = "solaris",
-    target_os = "vita"
-)))]
-pub(crate) fn pwritev(fd: BorrowedFd<'_>, bufs: &[IoSlice<'_>], offset: u64) -> io::Result<usize> {
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-    unsafe {
-        ret_usize(c::pwritev(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-            offset,
-        ))
-    }
-}
-
-#[cfg(linux_kernel)]
-pub(crate) fn preadv2(
-    fd: BorrowedFd<'_>,
-    bufs: &mut [IoSliceMut<'_>],
-    offset: u64,
-    flags: ReadWriteFlags,
-) -> io::Result<usize> {
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-    unsafe {
-        ret_usize(c::preadv2(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-            offset,
-            bitflags_bits!(flags),
-        ))
-    }
-}
-
-#[cfg(linux_kernel)]
-pub(crate) fn pwritev2(
-    fd: BorrowedFd<'_>,
-    bufs: &[IoSlice<'_>],
-    offset: u64,
-    flags: ReadWriteFlags,
-) -> io::Result<usize> {
-    // Silently cast; we'll get `EINVAL` if the value is negative.
-    let offset = offset as i64;
-    unsafe {
-        ret_usize(c::pwritev2(
-            borrowed_fd(fd),
-            bufs.as_ptr().cast::<c::iovec>(),
-            min(bufs.len(), MAX_IOV) as c::c_int,
-            offset,
-            bitflags_bits!(flags),
-        ))
-    }
-}
-
-// These functions are derived from Rust's library/std/src/sys/unix/fd.rs at
-// revision 326ef470a8b379a180d6dc4bbef08990698a737a.
-
-// The maximum read limit on most POSIX-like systems is `SSIZE_MAX`, with the
-// manual page quoting that if the count of bytes to read is greater than
-// `SSIZE_MAX` the result is “unspecified”.
-//
-// On macOS, however, apparently the 64-bit libc is either buggy or
-// intentionally showing odd behavior by rejecting any read with a size larger
-// than or equal to `INT_MAX`. To handle both of these the read size is capped
-// on both platforms.
-#[cfg(target_os = "macos")]
-const READ_LIMIT: usize = c::c_int::MAX as usize - 1;
-#[cfg(not(target_os = "macos"))]
-const READ_LIMIT: usize = c::ssize_t::MAX as usize;
-
-pub(crate) unsafe fn close(raw_fd: RawFd) {
-    let _ = c::close(raw_fd as c::c_int);
-}
-
-#[inline]
-pub(crate) unsafe fn ioctl(
-    fd: BorrowedFd<'_>,
-    request: RawOpcode,
-    arg: *mut c::c_void,
-) -> io::Result<IoctlOutput> {
-    ret_c_int(c::ioctl(borrowed_fd(fd), request, arg))
-}
-
-#[inline]
-pub(crate) unsafe fn ioctl_readonly(
-    fd: BorrowedFd<'_>,
-    request: RawOpcode,
-    arg: *mut c::c_void,
-) -> io::Result<IoctlOutput> {
-    ioctl(fd, request, arg)
-}
-
-#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
-#[cfg(all(feature = "fs", feature = "net"))]
-pub(crate) fn is_read_write(fd: BorrowedFd<'_>) -> io::Result<(bool, bool)> {
-    use core::mem::MaybeUninit;
-
-    let (mut read, mut write) = crate::fs::fd::_is_file_read_write(fd)?;
-    let mut not_socket = false;
-    if read {
-        // Do a `recv` with `PEEK` and `DONTWAIT` for 1 byte. A 0 indicates
-        // the read side is shut down; an `EWOULDBLOCK` indicates the read
-        // side is still open.
-        match unsafe {
-            c::recv(
-                borrowed_fd(fd),
-                MaybeUninit::<[u8; 1]>::uninit()
-                    .as_mut_ptr()
-                    .cast::<c::c_void>(),
-                1,
-                c::MSG_PEEK | c::MSG_DONTWAIT,
-            )
-        } {
-            0 => read = false,
-            -1 => {
-                #[allow(unreachable_patterns)] // `EAGAIN` may equal `EWOULDBLOCK`
-                match errno().0 {
-                    c::EAGAIN | c::EWOULDBLOCK => (),
-                    c::ENOTSOCK => not_socket = true,
-                    err => return Err(io::Errno(err)),
-                }
-            }
-            _ => (),
-        }
-    }
-    if write && !not_socket {
-        // Do a `send` with `DONTWAIT` for 0 bytes. An `EPIPE` indicates
-        // the write side is shut down.
-        if unsafe { c::send(borrowed_fd(fd), [].as_ptr(), 0, c::MSG_DONTWAIT) } == -1 {
-            #[allow(unreachable_patterns)] // `EAGAIN` may equal `EWOULDBLOCK`
-            match errno().0 {
-                c::EAGAIN | c::EWOULDBLOCK | c::ENOTSOCK => (),
-                c::EPIPE => write = false,
-                err => return Err(io::Errno(err)),
-            }
-        }
-    }
-    Ok((read, write))
-}
-
-#[cfg(target_os = "wasi")]
-#[cfg(all(feature = "fs", feature = "net"))]
-pub(crate) fn is_read_write(_fd: BorrowedFd<'_>) -> io::Result<(bool, bool)> {
-    todo!("Implement is_read_write for WASI in terms of fd_fdstat_get");
-}
-
-pub(crate) fn fcntl_getfd(fd: BorrowedFd<'_>) -> io::Result<FdFlags> {
-    let flags = unsafe { ret_c_int(c::fcntl(borrowed_fd(fd), c::F_GETFD))? };
-    Ok(FdFlags::from_bits_retain(bitcast!(flags)))
-}
-
-pub(crate) fn fcntl_setfd(fd: BorrowedFd<'_>, flags: FdFlags) -> io::Result<()> {
-    unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_SETFD, flags.bits())) }
-}
-
-#[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
-pub(crate) fn fcntl_dupfd_cloexec(fd: BorrowedFd<'_>, min: RawFd) -> io::Result<OwnedFd> {
-    unsafe { ret_owned_fd(c::fcntl(borrowed_fd(fd), c::F_DUPFD_CLOEXEC, min)) }
-}
-
-#[cfg(target_os = "espidf")]
-pub(crate) fn fcntl_dupfd(fd: BorrowedFd<'_>, min: RawFd) -> io::Result<OwnedFd> {
-    unsafe { ret_owned_fd(c::fcntl(borrowed_fd(fd), c::F_DUPFD, min)) }
-}
-
-#[cfg(not(target_os = "wasi"))]
-pub(crate) fn dup(fd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
-    unsafe { ret_owned_fd(c::dup(borrowed_fd(fd))) }
-}
-
-#[allow(clippy::needless_pass_by_ref_mut)]
-#[cfg(not(target_os = "wasi"))]
-pub(crate) fn dup2(fd: BorrowedFd<'_>, new: &mut OwnedFd) -> io::Result<()> {
-    unsafe { ret_discarded_fd(c::dup2(borrowed_fd(fd), borrowed_fd(new.as_fd()))) }
-}
-
-#[allow(clippy::needless_pass_by_ref_mut)]
-#[cfg(not(any(
-    apple,
-    target_os = "aix",
-    target_os = "android",
-    target_os = "dragonfly",
-    target_os = "espidf",
-    target_os = "haiku",
-    target_os = "nto",
-    target_os = "redox",
-    target_os = "vita",
-    target_os = "wasi",
-)))]
-pub(crate) fn dup3(fd: BorrowedFd<'_>, new: &mut OwnedFd, flags: DupFlags) -> io::Result<()> {
-    unsafe {
-        ret_discarded_fd(c::dup3(
-            borrowed_fd(fd),
-            borrowed_fd(new.as_fd()),
-            bitflags_bits!(flags),
-        ))
-    }
-}
-
-#[cfg(any(
-    apple,
-    target_os = "android",
-    target_os = "dragonfly",
-    target_os = "haiku",
-    target_os = "redox",
-))]
-pub(crate) fn dup3(fd: BorrowedFd<'_>, new: &mut OwnedFd, _flags: DupFlags) -> io::Result<()> {
-    // Android 5.0 has `dup3`, but libc doesn't have bindings. Emulate it
-    // using `dup2`. We don't need to worry about the difference between
-    // `dup2` and `dup3` when the file descriptors are equal because we
-    // have an `&mut OwnedFd` which means `fd` doesn't alias it.
-    dup2(fd, new)
-}