aboutsummaryrefslogtreecommitdiff
path: root/vendor/rustix/src/backend/linux_raw/termios
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/termios
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/termios')
-rw-r--r--vendor/rustix/src/backend/linux_raw/termios/mod.rs1
-rw-r--r--vendor/rustix/src/backend/linux_raw/termios/syscalls.rs330
2 files changed, 0 insertions, 331 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/termios/mod.rs b/vendor/rustix/src/backend/linux_raw/termios/mod.rs
deleted file mode 100644
index ef944f0..0000000
--- a/vendor/rustix/src/backend/linux_raw/termios/mod.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub(crate) mod syscalls;
diff --git a/vendor/rustix/src/backend/linux_raw/termios/syscalls.rs b/vendor/rustix/src/backend/linux_raw/termios/syscalls.rs
deleted file mode 100644
index 5a24c0a..0000000
--- a/vendor/rustix/src/backend/linux_raw/termios/syscalls.rs
+++ /dev/null
@@ -1,330 +0,0 @@
-//! linux_raw syscalls supporting `rustix::termios`.
-//!
-//! # Safety
-//!
-//! See the `rustix::backend` module documentation for details.
-#![allow(unsafe_code, clippy::undocumented_unsafe_blocks)]
-
-use crate::backend::c;
-use crate::backend::conv::{by_ref, c_uint, ret};
-use crate::fd::BorrowedFd;
-use crate::io;
-use crate::pid::Pid;
-#[cfg(all(feature = "alloc", feature = "procfs"))]
-use crate::procfs;
-use crate::termios::{
- Action, ControlModes, InputModes, LocalModes, OptionalActions, OutputModes, QueueSelector,
- SpecialCodeIndex, Termios, Winsize,
-};
-#[cfg(all(feature = "alloc", feature = "procfs"))]
-use crate::{ffi::CStr, fs::FileType, path::DecInt};
-use core::mem::MaybeUninit;
-use linux_raw_sys::general::IBSHIFT;
-use linux_raw_sys::ioctl::{
- TCFLSH, TCSBRK, TCXONC, TIOCGPGRP, TIOCGSID, TIOCGWINSZ, TIOCSPGRP, TIOCSWINSZ,
-};
-
-#[inline]
-pub(crate) fn tcgetwinsize(fd: BorrowedFd<'_>) -> io::Result<Winsize> {
- unsafe {
- let mut result = MaybeUninit::<Winsize>::uninit();
- ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGWINSZ), &mut result))?;
- Ok(result.assume_init())
- }
-}
-
-#[inline]
-pub(crate) fn tcgetattr(fd: BorrowedFd<'_>) -> io::Result<Termios> {
- unsafe {
- let mut result = MaybeUninit::<Termios>::uninit();
-
- // QEMU's `TCGETS2` doesn't currently set `input_speed` or
- // `output_speed` on PowerPC, so zero out the fields ourselves.
- #[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
- {
- result.write(core::mem::zeroed());
- }
-
- ret(syscall!(__NR_ioctl, fd, c_uint(c::TCGETS2), &mut result))?;
-
- let result = result.assume_init();
-
- // QEMU's `TCGETS2` doesn't currently set `input_speed` or
- // `output_speed` on PowerPC, so set them manually if we can.
- #[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
- let result = {
- use crate::termios::speed;
- let mut result = result;
- if result.output_speed == 0 && (result.control_modes.bits() & c::CBAUD) != c::BOTHER {
- if let Some(output_speed) = speed::decode(result.control_modes.bits() & c::CBAUD) {
- result.output_speed = output_speed;
- }
- }
- if result.input_speed == 0
- && ((result.control_modes.bits() & c::CIBAUD) >> c::IBSHIFT) != c::BOTHER
- {
- // For input speeds, `B0` is special-cased to mean the input
- // speed is the same as the output speed.
- if ((result.control_modes.bits() & c::CIBAUD) >> c::IBSHIFT) == c::B0 {
- result.input_speed = result.output_speed;
- } else if let Some(input_speed) =
- speed::decode((result.control_modes.bits() & c::CIBAUD) >> c::IBSHIFT)
- {
- result.input_speed = input_speed;
- }
- }
- result
- };
-
- Ok(result)
- }
-}
-
-#[inline]
-pub(crate) fn tcgetpgrp(fd: BorrowedFd<'_>) -> io::Result<Pid> {
- unsafe {
- let mut result = MaybeUninit::<c::pid_t>::uninit();
- ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGPGRP), &mut result))?;
- let pid = result.assume_init();
-
- // This doesn't appear to be documented, but it appears `tcsetpgrp` can
- // succceed and set the pid to 0 if we pass it a pseudo-terminal device
- // fd. For now, fail with `OPNOTSUPP`.
- if pid == 0 {
- return Err(io::Errno::OPNOTSUPP);
- }
-
- Ok(Pid::from_raw_unchecked(pid))
- }
-}
-
-#[inline]
-pub(crate) fn tcsetattr(
- fd: BorrowedFd<'_>,
- optional_actions: OptionalActions,
- termios: &Termios,
-) -> io::Result<()> {
- // Translate from `optional_actions` into an ioctl request code. On MIPS,
- // `optional_actions` already has `TCGETS` added to it.
- let request = linux_raw_sys::ioctl::TCSETS2
- + if cfg!(any(
- target_arch = "mips",
- target_arch = "mips32r6",
- target_arch = "mips64",
- target_arch = "mips64r6"
- )) {
- optional_actions as u32 - linux_raw_sys::ioctl::TCSETS
- } else {
- optional_actions as u32
- };
- unsafe {
- ret(syscall_readonly!(
- __NR_ioctl,
- fd,
- c_uint(request),
- by_ref(termios)
- ))
- }
-}
-
-#[inline]
-pub(crate) fn tcsendbreak(fd: BorrowedFd<'_>) -> io::Result<()> {
- unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TCSBRK), c_uint(0))) }
-}
-
-#[inline]
-pub(crate) fn tcdrain(fd: BorrowedFd<'_>) -> io::Result<()> {
- unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TCSBRK), c_uint(1))) }
-}
-
-#[inline]
-pub(crate) fn tcflush(fd: BorrowedFd<'_>, queue_selector: QueueSelector) -> io::Result<()> {
- unsafe {
- ret(syscall_readonly!(
- __NR_ioctl,
- fd,
- c_uint(TCFLSH),
- c_uint(queue_selector as u32)
- ))
- }
-}
-
-#[inline]
-pub(crate) fn tcflow(fd: BorrowedFd<'_>, action: Action) -> io::Result<()> {
- unsafe {
- ret(syscall_readonly!(
- __NR_ioctl,
- fd,
- c_uint(TCXONC),
- c_uint(action as u32)
- ))
- }
-}
-
-#[inline]
-pub(crate) fn tcgetsid(fd: BorrowedFd<'_>) -> io::Result<Pid> {
- unsafe {
- let mut result = MaybeUninit::<c::pid_t>::uninit();
- ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGSID), &mut result))?;
- let pid = result.assume_init();
- Ok(Pid::from_raw_unchecked(pid))
- }
-}
-
-#[inline]
-pub(crate) fn tcsetwinsize(fd: BorrowedFd<'_>, winsize: Winsize) -> io::Result<()> {
- unsafe {
- ret(syscall_readonly!(
- __NR_ioctl,
- fd,
- c_uint(TIOCSWINSZ),
- by_ref(&winsize)
- ))
- }
-}
-
-#[inline]
-pub(crate) fn tcsetpgrp(fd: BorrowedFd<'_>, pid: Pid) -> io::Result<()> {
- let raw_pid: c::c_int = pid.as_raw_nonzero().get();
- unsafe {
- ret(syscall_readonly!(
- __NR_ioctl,
- fd,
- c_uint(TIOCSPGRP),
- by_ref(&raw_pid)
- ))
- }
-}
-
-/// A wrapper around a conceptual `cfsetspeed` which handles an arbitrary
-/// integer speed value.
-#[inline]
-pub(crate) fn set_speed(termios: &mut Termios, arbitrary_speed: u32) -> io::Result<()> {
- let encoded_speed = crate::termios::speed::encode(arbitrary_speed).unwrap_or(c::BOTHER);
-
- debug_assert_eq!(encoded_speed & !c::CBAUD, 0);
-
- termios.control_modes -= ControlModes::from_bits_retain(c::CBAUD | c::CIBAUD);
- termios.control_modes |=
- ControlModes::from_bits_retain(encoded_speed | (encoded_speed << IBSHIFT));
-
- termios.input_speed = arbitrary_speed;
- termios.output_speed = arbitrary_speed;
-
- Ok(())
-}
-
-/// A wrapper around a conceptual `cfsetospeed` which handles an arbitrary
-/// integer speed value.
-#[inline]
-pub(crate) fn set_output_speed(termios: &mut Termios, arbitrary_speed: u32) -> io::Result<()> {
- let encoded_speed = crate::termios::speed::encode(arbitrary_speed).unwrap_or(c::BOTHER);
-
- debug_assert_eq!(encoded_speed & !c::CBAUD, 0);
-
- termios.control_modes -= ControlModes::from_bits_retain(c::CBAUD);
- termios.control_modes |= ControlModes::from_bits_retain(encoded_speed);
-
- termios.output_speed = arbitrary_speed;
-
- Ok(())
-}
-
-/// A wrapper around a conceptual `cfsetispeed` which handles an arbitrary
-/// integer speed value.
-#[inline]
-pub(crate) fn set_input_speed(termios: &mut Termios, arbitrary_speed: u32) -> io::Result<()> {
- let encoded_speed = crate::termios::speed::encode(arbitrary_speed).unwrap_or(c::BOTHER);
-
- debug_assert_eq!(encoded_speed & !c::CBAUD, 0);
-
- termios.control_modes -= ControlModes::from_bits_retain(c::CIBAUD);
- termios.control_modes |= ControlModes::from_bits_retain(encoded_speed << IBSHIFT);
-
- termios.input_speed = arbitrary_speed;
-
- Ok(())
-}
-
-#[inline]
-pub(crate) fn cfmakeraw(termios: &mut Termios) {
- // From the Linux [`cfmakeraw` manual page]:
- //
- // [`cfmakeraw` manual page]: https://man7.org/linux/man-pages/man3/cfmakeraw.3.html
- termios.input_modes -= InputModes::IGNBRK
- | InputModes::BRKINT
- | InputModes::PARMRK
- | InputModes::ISTRIP
- | InputModes::INLCR
- | InputModes::IGNCR
- | InputModes::ICRNL
- | InputModes::IXON;
- termios.output_modes -= OutputModes::OPOST;
- termios.local_modes -= LocalModes::ECHO
- | LocalModes::ECHONL
- | LocalModes::ICANON
- | LocalModes::ISIG
- | LocalModes::IEXTEN;
- termios.control_modes -= ControlModes::CSIZE | ControlModes::PARENB;
- termios.control_modes |= ControlModes::CS8;
-
- // Musl and glibc also do these:
- termios.special_codes[SpecialCodeIndex::VMIN] = 1;
- termios.special_codes[SpecialCodeIndex::VTIME] = 0;
-}
-
-#[inline]
-pub(crate) fn isatty(fd: BorrowedFd<'_>) -> bool {
- // On error, Linux will return either `EINVAL` (2.6.32) or `ENOTTY`
- // (otherwise), because we assume we're never passing an invalid
- // file descriptor (which would get `EBADF`). Either way, an error
- // means we don't have a tty.
- tcgetwinsize(fd).is_ok()
-}
-
-#[cfg(all(feature = "alloc", feature = "procfs"))]
-pub(crate) fn ttyname(fd: BorrowedFd<'_>, buf: &mut [MaybeUninit<u8>]) -> io::Result<usize> {
- let fd_stat = crate::backend::fs::syscalls::fstat(fd)?;
-
- // Quick check: if `fd` isn't a character device, it's not a tty.
- if FileType::from_raw_mode(fd_stat.st_mode) != FileType::CharacterDevice {
- return Err(io::Errno::NOTTY);
- }
-
- // Check that `fd` is really a tty.
- tcgetwinsize(fd)?;
-
- // Get a fd to "/proc/self/fd".
- let proc_self_fd = procfs::proc_self_fd()?;
-
- // Gather the ttyname by reading the "fd" file inside `proc_self_fd`.
- let r = crate::backend::fs::syscalls::readlinkat(
- proc_self_fd,
- DecInt::from_fd(fd).as_c_str(),
- buf,
- )?;
-
- // If the number of bytes is equal to the buffer length, truncation may
- // have occurred. This check also ensures that we have enough space for
- // adding a NUL terminator.
- if r == buf.len() {
- return Err(io::Errno::RANGE);
- }
-
- // `readlinkat` returns the number of bytes placed in the buffer.
- // NUL-terminate the string at that offset.
- buf[r].write(b'\0');
-
- // Check that the path we read refers to the same file as `fd`.
- {
- // SAFETY: We just wrote the NUL byte above
- let path = unsafe { CStr::from_ptr(buf.as_ptr().cast()) };
-
- let path_stat = crate::backend::fs::syscalls::stat(path)?;
- if path_stat.st_dev != fd_stat.st_dev || path_stat.st_ino != fd_stat.st_ino {
- return Err(io::Errno::NODEV);
- }
- }
-
- Ok(r)
-}