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use crate::fs::open_options::OpenOptions;
use std::os::unix::fs::OpenOptionsExt as StdOpenOptionsExt;
/// Unix-specific extensions to [`fs::OpenOptions`].
///
/// This mirrors the definition of [`std::os::unix::fs::OpenOptionsExt`].
///
///
/// [`fs::OpenOptions`]: crate::fs::OpenOptions
/// [`std::os::unix::fs::OpenOptionsExt`]: std::os::unix::fs::OpenOptionsExt
pub trait OpenOptionsExt: sealed::Sealed {
/// Sets the mode bits that a new file will be created with.
///
/// If a new file is created as part of an `OpenOptions::open` call then this
/// specified `mode` will be used as the permission bits for the new file.
/// If no `mode` is set, the default of `0o666` will be used.
/// The operating system masks out bits with the system's `umask`, to produce
/// the final permissions.
///
/// # Examples
///
/// ```no_run
/// use tokio::fs::OpenOptions;
/// use tokio::fs::os::unix::OpenOptionsExt;
/// use std::io;
///
/// #[tokio::main]
/// async fn main() -> io::Result<()> {
/// let mut options = OpenOptions::new();
/// options.mode(0o644); // Give read/write for owner and read for others.
/// let file = options.open("foo.txt").await?;
///
/// Ok(())
/// }
/// ```
fn mode(&mut self, mode: u32) -> &mut Self;
/// Pass custom flags to the `flags` argument of `open`.
///
/// The bits that define the access mode are masked out with `O_ACCMODE`, to
/// ensure they do not interfere with the access mode set by Rusts options.
///
/// Custom flags can only set flags, not remove flags set by Rusts options.
/// This options overwrites any previously set custom flags.
///
/// # Examples
///
/// ```no_run
/// use libc;
/// use tokio::fs::OpenOptions;
/// use tokio::fs::os::unix::OpenOptionsExt;
/// use std::io;
///
/// #[tokio::main]
/// async fn main() -> io::Result<()> {
/// let mut options = OpenOptions::new();
/// options.write(true);
/// if cfg!(unix) {
/// options.custom_flags(libc::O_NOFOLLOW);
/// }
/// let file = options.open("foo.txt").await?;
///
/// Ok(())
/// }
/// ```
fn custom_flags(&mut self, flags: i32) -> &mut Self;
}
impl OpenOptionsExt for OpenOptions {
fn mode(&mut self, mode: u32) -> &mut OpenOptions {
self.as_inner_mut().mode(mode);
self
}
fn custom_flags(&mut self, flags: i32) -> &mut OpenOptions {
self.as_inner_mut().custom_flags(flags);
self
}
}
impl sealed::Sealed for OpenOptions {}
pub(crate) mod sealed {
#[doc(hidden)]
pub trait Sealed {}
}
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