diff options
Diffstat (limited to 'vendor/rustix/src/termios/tty.rs')
| -rw-r--r-- | vendor/rustix/src/termios/tty.rs | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/vendor/rustix/src/termios/tty.rs b/vendor/rustix/src/termios/tty.rs deleted file mode 100644 index b14e602..0000000 --- a/vendor/rustix/src/termios/tty.rs +++ /dev/null @@ -1,84 +0,0 @@ -//! Functions which operate on file descriptors which might be terminals. - -use crate::backend; -use backend::fd::AsFd; -#[cfg(all(feature = "alloc", feature = "procfs"))] -#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))] -use { - crate::ffi::CString, crate::io, crate::path::SMALL_PATH_BUFFER_SIZE, alloc::vec::Vec, - backend::fd::BorrowedFd, -}; - -/// `isatty(fd)`—Tests whether a file descriptor refers to a terminal. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/isatty.html -/// [Linux]: https://man7.org/linux/man-pages/man3/isatty.3.html -#[inline] -pub fn isatty<Fd: AsFd>(fd: Fd) -> bool { - backend::termios::syscalls::isatty(fd.as_fd()) -} - -/// `ttyname_r(fd)` -/// -/// If `reuse` already has available capacity, reuse it if possible. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/ttyname.html -/// [Linux]: https://man7.org/linux/man-pages/man3/ttyname.3.html -#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))] -#[cfg(all(feature = "alloc", feature = "procfs"))] -#[cfg_attr(doc_cfg, doc(cfg(feature = "procfs")))] -#[doc(alias = "ttyname_r")] -#[inline] -pub fn ttyname<Fd: AsFd, B: Into<Vec<u8>>>(dirfd: Fd, reuse: B) -> io::Result<CString> { - _ttyname(dirfd.as_fd(), reuse.into()) -} - -#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))] -#[cfg(all(feature = "alloc", feature = "procfs"))] -#[allow(unsafe_code)] -fn _ttyname(dirfd: BorrowedFd<'_>, mut buffer: Vec<u8>) -> io::Result<CString> { - buffer.clear(); - buffer.reserve(SMALL_PATH_BUFFER_SIZE); - - loop { - match backend::termios::syscalls::ttyname(dirfd, buffer.spare_capacity_mut()) { - Err(io::Errno::RANGE) => { - // Use `Vec` reallocation strategy to grow capacity - // exponentially. - buffer.reserve(buffer.capacity() + 1); - } - Ok(len) => { - // SAFETY: Assume the backend returns the length of the string - // excluding the NUL. - unsafe { - buffer.set_len(len + 1); - } - - // SAFETY: - // - “ttyname_r stores this pathname in the buffer buf” - // - [POSIX definition 3.271: Pathname]: “A string that is used - // to identify a file.” - // - [POSIX definition 3.375: String]: “A contiguous sequence - // of bytes terminated by and including the first null byte.” - // - // Thus, there will be a single NUL byte at the end of the - // string. - // - // [POSIX definition 3.271: Pathname]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_271 - // [POSIX definition 3.375: String]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_375 - unsafe { - return Ok(CString::from_vec_with_nul_unchecked(buffer)); - } - } - Err(errno) => return Err(errno), - } - } -} |