dirent

pub const dirent = switch (native_os) {
    .linux, .emscripten => extern struct {
        ino: ino_t,
        off: off_t,
        reclen: c_ushort,
        type: u8,
        name: [256]u8,
    },
    .driverkit, .ios, .maccatalyst, .macos, .tvos, .visionos, .watchos => extern struct {
        ino: u64,
        seekoff: u64,
        reclen: u16,
        namlen: u16,
        type: u8,
        name: [1024]u8,
    },
    .freebsd => extern struct {
        /// File number of entry.
        fileno: ino_t,
        /// Directory offset of entry.
        off: off_t,
        /// Length of this record.
        reclen: u16,
        /// File type, one of DT_.
        type: u8,
        pad0: u8 = 0,
        /// Length of the name member.
        namlen: u16,
        pad1: u16 = 0,
        /// Name of entry.
        name: [255:0]u8,
    },
    .illumos => extern struct {
        /// Inode number of entry.
        ino: ino_t,
        /// Offset of this entry on disk.
        off: off_t,
        /// Length of this record.
        reclen: u16,
        /// File name.
        name: [MAXNAMLEN:0]u8,
    },
    .netbsd => extern struct {
        fileno: ino_t,
        reclen: u16,
        namlen: u16,
        type: u8,
        name: [MAXNAMLEN:0]u8,
    },
    .dragonfly => extern struct {
        fileno: c_ulong,
        namlen: u16,
        type: u8,
        unused1: u8,
        unused2: u32,
        name: [256]u8,

        pub fn reclen(self: dirent) u16 {
            return (@offsetOf(dirent, "name") + self.namlen + 1 + 7) & ~@as(u16, 7);
        }
    },
    .openbsd => extern struct {
        fileno: ino_t,
        off: off_t,
        reclen: u16,
        type: u8,
        namlen: u8,
        _: u32 align(1) = 0,
        name: [MAXNAMLEN:0]u8,
    },
    // https://github.com/SerenityOS/serenity/blob/abc150085f532f123b598949218893cb272ccc4c/Userland/Libraries/LibC/dirent.h#L14-L20
    .serenity => extern struct {
        ino: ino_t,
        off: off_t,
        reclen: c_ushort,
        type: u8,
        name: [255:0]u8,
    },
    else => void,
}