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Diffstat (limited to 'vendor/rustix/src/backend/libc/conv.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/conv.rs | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/vendor/rustix/src/backend/libc/conv.rs b/vendor/rustix/src/backend/libc/conv.rs deleted file mode 100644 index 2539510..0000000 --- a/vendor/rustix/src/backend/libc/conv.rs +++ /dev/null @@ -1,247 +0,0 @@ -//! Libc call arguments and return values are often things like `c_int`, -//! `c_uint`, or libc-specific pointer types. This module provides functions -//! for converting between rustix's types and libc types. - -use super::c; -#[cfg(all(feature = "alloc", not(any(windows, target_os = "espidf"))))] -use super::fd::IntoRawFd; -use super::fd::{AsRawFd, BorrowedFd, FromRawFd, LibcFd, OwnedFd, RawFd}; -#[cfg(not(windows))] -use crate::ffi::CStr; -use crate::io; - -#[cfg(not(windows))] -#[inline] -pub(super) fn c_str(c: &CStr) -> *const c::c_char { - c.as_ptr() -} - -#[cfg(not(any(windows, target_os = "espidf", target_os = "vita", target_os = "wasi")))] -#[inline] -pub(super) fn no_fd() -> LibcFd { - -1 -} - -#[inline] -pub(super) fn borrowed_fd(fd: BorrowedFd<'_>) -> LibcFd { - fd.as_raw_fd() as LibcFd -} - -#[cfg(all( - feature = "alloc", - not(any(windows, target_os = "espidf", target_os = "redox")) -))] -#[inline] -pub(super) fn owned_fd(fd: OwnedFd) -> LibcFd { - fd.into_raw_fd() as LibcFd -} - -#[inline] -pub(super) fn ret(raw: c::c_int) -> io::Result<()> { - if raw == 0 { - Ok(()) - } else { - Err(io::Errno::last_os_error()) - } -} - -#[cfg(apple)] -#[inline] -pub(super) fn nonnegative_ret(raw: c::c_int) -> io::Result<()> { - if raw >= 0 { - Ok(()) - } else { - Err(io::Errno::last_os_error()) - } -} - -#[cfg(not(any(windows, target_os = "wasi")))] -#[inline] -pub(super) unsafe fn ret_infallible(raw: c::c_int) { - debug_assert_eq!(raw, 0, "unexpected error: {:?}", io::Errno::last_os_error()); -} - -#[inline] -pub(super) fn ret_c_int(raw: c::c_int) -> io::Result<c::c_int> { - if raw == -1 { - Err(io::Errno::last_os_error()) - } else { - Ok(raw) - } -} - -#[cfg(linux_kernel)] -#[inline] -pub(super) fn ret_u32(raw: c::c_int) -> io::Result<u32> { - if raw == -1 { - Err(io::Errno::last_os_error()) - } else { - Ok(raw as u32) - } -} - -#[inline] -pub(super) fn ret_usize(raw: c::ssize_t) -> io::Result<usize> { - if raw == -1 { - Err(io::Errno::last_os_error()) - } else { - debug_assert!(raw >= 0); - Ok(raw as usize) - } -} - -#[cfg(not(windows))] -#[cfg(feature = "fs")] -#[inline] -pub(super) fn ret_off_t(raw: c::off_t) -> io::Result<c::off_t> { - if raw == -1 { - Err(io::Errno::last_os_error()) - } else { - Ok(raw) - } -} - -#[cfg(not(any(windows, target_os = "wasi")))] -#[inline] -pub(super) fn ret_pid_t(raw: c::pid_t) -> io::Result<c::pid_t> { - if raw == -1 { - Err(io::Errno::last_os_error()) - } else { - Ok(raw) - } -} - -/// Convert a `c_int` returned from a libc function to an `OwnedFd`, if valid. -/// -/// # Safety -/// -/// The caller must ensure that this is the return value of a libc function -/// which returns an owned file descriptor. -#[inline] -pub(super) unsafe fn ret_owned_fd(raw: LibcFd) -> io::Result<OwnedFd> { - if raw == !0 { - Err(io::Errno::last_os_error()) - } else { - Ok(OwnedFd::from_raw_fd(raw as RawFd)) - } -} - -#[cfg(not(any(windows, target_os = "wasi")))] -#[inline] -pub(super) fn ret_discarded_fd(raw: LibcFd) -> io::Result<()> { - if raw == !0 { - Err(io::Errno::last_os_error()) - } else { - Ok(()) - } -} - -#[cfg(all(feature = "alloc", not(any(windows, target_os = "wasi"))))] -#[inline] -pub(super) fn ret_discarded_char_ptr(raw: *mut c::c_char) -> io::Result<()> { - if raw.is_null() { - Err(io::Errno::last_os_error()) - } else { - Ok(()) - } -} - -/// Convert the buffer-length argument value of a `send` or `recv` call. -#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))] -#[inline] -pub(super) fn send_recv_len(len: usize) -> usize { - len -} - -/// Convert the buffer-length argument value of a `send` or `recv` call. -#[cfg(windows)] -#[inline] -pub(super) fn send_recv_len(len: usize) -> i32 { - // On Windows, the length argument has type `i32`; saturate the length, - // since `send` and `recv` are allowed to send and recv less data than - // requested. - len.try_into().unwrap_or(i32::MAX) -} - -/// Convert the return value of a `send` or `recv` call. -#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))] -#[inline] -pub(super) fn ret_send_recv(len: isize) -> io::Result<usize> { - ret_usize(len) -} - -/// Convert the return value of a `send` or `recv` call. -#[cfg(windows)] -#[inline] -pub(super) fn ret_send_recv(len: i32) -> io::Result<usize> { - ret_usize(len as isize) -} - -/// Convert the value to the `msg_iovlen` field of a `msghdr` struct. -#[cfg(all( - not(any(windows, target_os = "espidf", target_os = "redox", target_os = "wasi")), - any( - target_os = "android", - all(target_os = "linux", not(target_env = "musl")) - ) -))] -#[inline] -pub(super) fn msg_iov_len(len: usize) -> c::size_t { - len -} - -/// Convert the value to the `msg_iovlen` field of a `msghdr` struct. -#[cfg(all( - not(any( - windows, - target_os = "espidf", - target_os = "redox", - target_os = "vita", - target_os = "wasi" - )), - not(any( - target_os = "android", - all(target_os = "linux", not(target_env = "musl")) - )) -))] -#[inline] -pub(crate) fn msg_iov_len(len: usize) -> c::c_int { - len.try_into().unwrap_or(c::c_int::MAX) -} - -/// Convert the value to a `socklen_t`. -#[cfg(any( - bsd, - solarish, - target_env = "musl", - target_os = "aix", - target_os = "emscripten", - target_os = "fuchsia", - target_os = "haiku", - target_os = "nto", -))] -#[inline] -pub(crate) fn msg_control_len(len: usize) -> c::socklen_t { - len.try_into().unwrap_or(c::socklen_t::MAX) -} - -/// Convert the value to a `size_t`. -#[cfg(not(any( - bsd, - solarish, - windows, - target_env = "musl", - target_os = "aix", - target_os = "emscripten", - target_os = "espidf", - target_os = "fuchsia", - target_os = "haiku", - target_os = "nto", - target_os = "redox", - target_os = "vita", - target_os = "wasi", -)))] -#[inline] -pub(crate) fn msg_control_len(len: usize) -> c::size_t { - len -} |