//! The following is derived from Rust's //! library/std/src/io/mod.rs at revision //! dca3f1b786efd27be3b325ed1e01e247aa589c3b.
/// Enumeration of possible methods to seek within an I/O object. /// /// It is used by the [`seek`] function. /// /// This is similar to [`std::io::SeekFrom`], however it adds platform-specific /// seek options. /// /// [`seek`]: crate::fs::seek #[derive(Copy, PartialEq, Eq, Clone, Debug)] #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] pubenum SeekFrom { /// Sets the offset to the provided number of bytes. #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
Start(#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] u64),
/// Sets the offset to the size of this object plus the specified number of /// bytes. /// /// It is possible to seek beyond the end of an object, but it's an error /// to seek before byte 0. #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
End(#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] i64),
/// Sets the offset to the current position plus the specified number of /// bytes. /// /// It is possible to seek beyond the end of an object, but it's an error /// to seek before byte 0. #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
Current(#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] i64),
/// Sets the offset to the current position plus the specified number of /// bytes, plus the distance to the next byte which is not in a hole. /// /// If the offset is in a hole at the end of the file, the seek will fail /// with [`Errno::NXIO`]. /// /// [`Errno::NXIO`]: crate::io::Errno::NXIO #[cfg(any(apple, freebsdlike, linux_kernel, solarish))]
Data(i64),
/// Sets the offset to the current position plus the specified number of /// bytes, plus the distance to the next byte which is in a hole. /// /// If there is no hole past the offset, it will be set to the end of the /// file i.e. there is an implicit hole at the end of any file. #[cfg(any(apple, freebsdlike, linux_kernel, solarish))]
Hole(i64),
}
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