use crate::{backend, io};

use backend::fd::AsFd;

pub use backend::fs::types::Advice;

/// `posix_fadvise(fd, offset, len, advice)`—Declares an expected access

/// pattern for a file.

///

/// # References

///  - [POSIX]

///  - [Linux]

///

/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_fadvise.html

/// [Linux]: https://man7.org/linux/man-pages/man2/posix_fadvise.2.html

#[inline]

#[doc(alias = "posix_fadvise")]

pub fn fadvise<Fd: AsFd>(fd: Fd, offset: u64, len: u64, advice: Advice) -> io::Result<()> {

    backend::fs::syscalls::fadvise(fd.as_fd(), offset, len, advice)

}