diff options
Diffstat (limited to 'vendor/rustix/src/process/chdir.rs')
| -rw-r--r-- | vendor/rustix/src/process/chdir.rs | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/vendor/rustix/src/process/chdir.rs b/vendor/rustix/src/process/chdir.rs deleted file mode 100644 index a68352f..0000000 --- a/vendor/rustix/src/process/chdir.rs +++ /dev/null @@ -1,97 +0,0 @@ -#[cfg(not(target_os = "fuchsia"))] -use crate::backend::fd::AsFd; -#[cfg(feature = "fs")] -use crate::path; -#[cfg(any(feature = "fs", not(target_os = "fuchsia")))] -use crate::{backend, io}; -#[cfg(all(feature = "alloc", feature = "fs"))] -use { - crate::ffi::{CStr, CString}, - crate::path::SMALL_PATH_BUFFER_SIZE, - alloc::vec::Vec, -}; - -/// `chdir(path)`—Change the current working directory. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/chdir.html -/// [Linux]: https://man7.org/linux/man-pages/man2/chdir.2.html -#[inline] -#[cfg(feature = "fs")] -#[cfg_attr(doc_cfg, doc(cfg(feature = "fs")))] -pub fn chdir<P: path::Arg>(path: P) -> io::Result<()> { - path.into_with_c_str(backend::process::syscalls::chdir) -} - -/// `fchdir(fd)`—Change the current working directory. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html -/// [Linux]: https://man7.org/linux/man-pages/man2/fchdir.2.html -#[cfg(not(target_os = "fuchsia"))] -#[inline] -pub fn fchdir<Fd: AsFd>(fd: Fd) -> io::Result<()> { - backend::process::syscalls::fchdir(fd.as_fd()) -} - -/// `getCWD`—Return the current working directory. -/// -/// If `reuse` already has available capacity, reuse it if possible. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html -/// [Linux]: https://man7.org/linux/man-pages/man3/getcwd.3.html -#[cfg(all(feature = "alloc", feature = "fs"))] -#[cfg(not(target_os = "wasi"))] -#[cfg_attr(doc_cfg, doc(cfg(feature = "fs")))] -#[inline] -pub fn getcwd<B: Into<Vec<u8>>>(reuse: B) -> io::Result<CString> { - _getcwd(reuse.into()) -} - -#[cfg(all(feature = "alloc", feature = "fs"))] -#[allow(unsafe_code)] -fn _getcwd(mut buffer: Vec<u8>) -> io::Result<CString> { - buffer.clear(); - buffer.reserve(SMALL_PATH_BUFFER_SIZE); - - loop { - match backend::process::syscalls::getcwd(buffer.spare_capacity_mut()) { - Err(io::Errno::RANGE) => { - // Use `Vec` reallocation strategy to grow capacity - // exponentially. - buffer.reserve(buffer.capacity() + 1); - } - Ok(_) => { - // SAFETY: - // - "These functions return a null-terminated string" - // - [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 3.375: String]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_375 - unsafe { - buffer.set_len( - CStr::from_ptr(buffer.as_ptr().cast()) - .to_bytes_with_nul() - .len(), - ); - - return Ok(CString::from_vec_with_nul_unchecked(buffer)); - } - } - Err(errno) => return Err(errno), - } - } -} |