1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/pty/syscalls.rs b/vendor/rustix/src/backend/linux_raw/pty/syscalls.rs
new file mode 100644
index 0000000..b64344f
--- /dev/null
+++ b/vendor/rustix/src/backend/linux_raw/pty/syscalls.rs
@@ -0,0 +1,43 @@
+//! linux_raw syscalls supporting `rustix::pty`.
+//!
+//! # Safety
+//!
+//! See the `rustix::backend` module documentation for details.
+#![allow(unsafe_code, clippy::undocumented_unsafe_blocks)]
+
+use crate::backend::conv::{by_ref, c_uint, ret};
+use crate::fd::BorrowedFd;
+use crate::io;
+use linux_raw_sys::ioctl::TIOCSPTLCK;
+#[cfg(feature = "alloc")]
+use {
+    crate::backend::c, crate::ffi::CString, crate::path::DecInt, alloc::vec::Vec,
+    core::mem::MaybeUninit, linux_raw_sys::ioctl::TIOCGPTN,
+};
+
+#[cfg(feature = "alloc")]
+#[inline]
+pub(crate) fn ptsname(fd: BorrowedFd<'_>, mut buffer: Vec<u8>) -> io::Result<CString> {
+    unsafe {
+        let mut n = MaybeUninit::<c::c_int>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGPTN), &mut n))?;
+
+        buffer.clear();
+        buffer.extend_from_slice(b"/dev/pts/");
+        buffer.extend_from_slice(DecInt::new(n.assume_init()).as_bytes());
+        buffer.push(b'\0');
+        Ok(CString::from_vec_with_nul_unchecked(buffer))
+    }
+}
+
+#[inline]
+pub(crate) fn unlockpt(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ioctl,
+            fd,
+            c_uint(TIOCSPTLCK),
+            by_ref(&0)
+        ))
+    }
+}