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//! Filesystem operations.

mod abs;
#[cfg(not(target_os = "redox"))]
mod at;
mod constants;
#[cfg(linux_kernel)]
mod copy_file_range;
#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
#[cfg(not(target_os = "haiku"))] // Haiku needs <https://github.com/rust-lang/rust/pull/112371>
mod cwd;
#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
mod dir;
#[cfg(not(any(
    apple,
    netbsdlike,
    solarish,
    target_os = "dragonfly",
    target_os = "espidf",
    target_os = "haiku",
    target_os = "redox",
    target_os = "vita",
)))]
mod fadvise;
pub(crate) mod fcntl;
#[cfg(apple)]
mod fcntl_apple;
#[cfg(apple)]
mod fcopyfile;
pub(crate) mod fd;
#[cfg(all(apple, feature = "alloc"))]
mod getpath;
#[cfg(not(target_os = "wasi"))] // WASI doesn't have get[gpu]id.
mod id;
#[cfg(linux_kernel)]
mod ioctl;
#[cfg(not(any(
    target_os = "espidf",
    target_os = "haiku",
    target_os = "redox",
    target_os = "vita",
    target_os = "wasi"
)))]
mod makedev;
#[cfg(any(linux_kernel, target_os = "freebsd"))]
mod memfd_create;
#[cfg(linux_kernel)]
#[cfg(feature = "fs")]
mod mount;
#[cfg(linux_kernel)]
mod openat2;
#[cfg(linux_kernel)]
mod raw_dir;
mod seek_from;
#[cfg(target_os = "linux")]
mod sendfile;
#[cfg(linux_kernel)]
mod statx;
#[cfg(not(any(
    target_os = "espidf",
    target_os = "redox",
    target_os = "vita",
    target_os = "wasi"
)))]
mod sync;
#[cfg(any(apple, linux_kernel))]
mod xattr;

#[cfg(linux_kernel)]
pub use crate::backend::fs::inotify;
pub use abs::*;
#[cfg(not(target_os = "redox"))]
pub use at::*;
pub use constants::*;
#[cfg(linux_kernel)]
pub use copy_file_range::copy_file_range;
#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
#[cfg(not(target_os = "haiku"))] // Haiku needs <https://github.com/rust-lang/rust/pull/112371>
pub use cwd::*;
#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
pub use dir::{Dir, DirEntry};
#[cfg(not(any(
    apple,
    netbsdlike,
    solarish,
    target_os = "dragonfly",
    target_os = "espidf",
    target_os = "haiku",
    target_os = "redox",
    target_os = "vita",
)))]
pub use fadvise::fadvise;
pub use fcntl::*;
#[cfg(apple)]
pub use fcntl_apple::*;
#[cfg(apple)]
pub use fcopyfile::*;
pub use fd::*;
#[cfg(all(apple, feature = "alloc"))]
pub use getpath::getpath;
#[cfg(not(target_os = "wasi"))]
pub use id::*;
#[cfg(linux_kernel)]
pub use ioctl::*;
#[cfg(not(any(
    target_os = "espidf",
    target_os = "haiku",
    target_os = "redox",
    target_os = "vita",
    target_os = "wasi"
)))]
pub use makedev::*;
#[cfg(any(linux_kernel, target_os = "freebsd"))]
pub use memfd_create::memfd_create;
#[cfg(linux_kernel)]
#[cfg(feature = "fs")]
pub use mount::*;
#[cfg(linux_kernel)]
pub use openat2::openat2;
#[cfg(linux_kernel)]
pub use raw_dir::{RawDir, RawDirEntry};
pub use seek_from::SeekFrom;
#[cfg(target_os = "linux")]
pub use sendfile::sendfile;
#[cfg(linux_kernel)]
pub use statx::statx;
#[cfg(not(any(
    target_os = "espidf",
    target_os = "redox",
    target_os = "vita",
    target_os = "wasi"
)))]
pub use sync::sync;
#[cfg(any(apple, linux_kernel))]
pub use xattr::*;

/// Re-export types common to POSIX-ish platforms.
#[cfg(feature = "std")]
#[cfg(unix)]
pub use std::os::unix::fs::{DirEntryExt, FileExt, FileTypeExt, MetadataExt, OpenOptionsExt};
#[cfg(feature = "std")]
#[cfg(all(wasi_ext, target_os = "wasi"))]
pub use std::os::wasi::fs::{DirEntryExt, FileExt, FileTypeExt, MetadataExt, OpenOptionsExt};

/// Extension trait for accessing timestamp fields of `Stat`.
///
/// Rustix's `Stat` type on some platforms has unsigned `st_mtime`,
/// `st_atime`, and `st_ctime` fields. This is incorrect, as Unix defines
/// these fields to be signed, with negative values representing dates before
/// the Unix epoch. Until the next semver bump, these unsigned fields are
/// deprecated, and this trait provides accessors which return their values
/// as signed integers.
#[cfg(all(unix, not(any(target_os = "aix", target_os = "nto"))))]
pub trait StatExt {
    /// Return the value of the `st_atime` field, casted to the correct type.
    fn atime(&self) -> i64;
    /// Return the value of the `st_mtime` field, casted to the correct type.
    fn mtime(&self) -> i64;
    /// Return the value of the `st_ctime` field, casted to the correct type.
    fn ctime(&self) -> i64;
}

#[cfg(all(unix, not(any(target_os = "aix", target_os = "nto"))))]
#[allow(deprecated)]
impl StatExt for Stat {
    #[inline]
    fn atime(&self) -> i64 {
        self.st_atime as i64
    }

    #[inline]
    fn mtime(&self) -> i64 {
        self.st_mtime as i64
    }

    #[inline]
    fn ctime(&self) -> i64 {
        self.st_ctime as i64
    }
}