// APIs that were changed after FreeBSD 11

// The type of `nlink_t` changed from `u16` to `u64` in FreeBSD 12:
pub type nlink_t = u16;
// Type of `dev_t` changed from `u32` to `u64` in FreeBSD 12:
pub type dev_t = u32;
// Type of `ino_t` changed from `unsigned int` to `unsigned long` in FreeBSD 12:
pub type ino_t = u32;

s! {
    pub struct kevent {
        pub ident: ::uintptr_t,
        pub filter: ::c_short,
        pub flags: ::c_ushort,
        pub fflags: ::c_uint,
        pub data: ::intptr_t,
        pub udata: *mut ::c_void,
    }

    pub struct shmid_ds {
        pub shm_perm: ::ipc_perm,
        pub shm_segsz: ::size_t,
        pub shm_lpid: ::pid_t,
        pub shm_cpid: ::pid_t,
        // Type of shm_nattc changed from `int` to `shmatt_t` (aka `unsigned
        // int`) in FreeBSD 12:
        pub shm_nattch: ::c_int,
        pub shm_atime: ::time_t,
        pub shm_dtime: ::time_t,
        pub shm_ctime: ::time_t,
    }

    pub struct kinfo_proc {
        /// Size of this structure.
        pub ki_structsize: ::c_int,
        /// Reserved: layout identifier.
        pub ki_layout: ::c_int,
        /// Address of command arguments.
        pub ki_args: *mut ::pargs,
        // This is normally "struct proc".
        /// Address of proc.
        pub ki_paddr: *mut ::c_void,
        // This is normally "struct user".
        /// Kernel virtual address of u-area.
        pub ki_addr: *mut ::c_void,
        // This is normally "struct vnode".
        /// Pointer to trace file.
        pub ki_tracep: *mut ::c_void,
        // This is normally "struct vnode".
        /// Pointer to executable file.
        pub ki_textvp: *mut ::c_void,
        // This is normally "struct filedesc".
        /// Pointer to open file info.
        pub ki_fd: *mut ::c_void,
        // This is normally "struct vmspace".
        /// Pointer to kernel vmspace struct.
        pub ki_vmspace: *mut ::c_void,
        /// Sleep address.
        pub ki_wchan: *mut ::c_void,
        /// Process identifier.
        pub ki_pid: ::pid_t,
        /// Parent process ID.
        pub ki_ppid: ::pid_t,
        /// Process group ID.
        pub ki_pgid: ::pid_t,
        /// tty process group ID.
        pub ki_tpgid: ::pid_t,
        /// Process session ID.
        pub ki_sid: ::pid_t,
        /// Terminal session ID.
        pub ki_tsid: ::pid_t,
        /// Job control counter.
        pub ki_jobc: ::c_short,
        /// Unused (just here for alignment).
        pub ki_spare_short1: ::c_short,
        /// Controlling tty dev.
        pub ki_tdev: ::dev_t,
        /// Signals arrived but not delivered.
        pub ki_siglist: ::sigset_t,
        /// Current signal mask.
        pub ki_sigmask: ::sigset_t,
        /// Signals being ignored.
        pub ki_sigignore: ::sigset_t,
        /// Signals being caught by user.
        pub ki_sigcatch: ::sigset_t,
        /// Effective user ID.
        pub ki_uid: ::uid_t,
        /// Real user ID.
        pub ki_ruid: ::uid_t,
        /// Saved effective user ID.
        pub ki_svuid: ::uid_t,
        /// Real group ID.
        pub ki_rgid: ::gid_t,
        /// Saved effective group ID.
        pub ki_svgid: ::gid_t,
        /// Number of groups.
        pub ki_ngroups: ::c_short,
        /// Unused (just here for alignment).
        pub ki_spare_short2: ::c_short,
        /// Groups.
        pub ki_groups: [::gid_t; ::KI_NGROUPS],
        /// Virtual size.
        pub ki_size: ::vm_size_t,
        /// Current resident set size in pages.
        pub ki_rssize: ::segsz_t,
        /// Resident set size before last swap.
        pub ki_swrss: ::segsz_t,
        /// Text size (pages) XXX.
        pub ki_tsize: ::segsz_t,
        /// Data size (pages) XXX.
        pub ki_dsize: ::segsz_t,
        /// Stack size (pages).
        pub ki_ssize: ::segsz_t,
        /// Exit status for wait & stop signal.
        pub ki_xstat: ::u_short,
        /// Accounting flags.
        pub ki_acflag: ::u_short,
        /// %cpu for process during `ki_swtime`.
        pub ki_pctcpu: ::fixpt_t,
        /// Time averaged value of `ki_cpticks`.
        pub ki_estcpu: ::u_int,
        /// Time since last blocked.
        pub ki_slptime: ::u_int,
        /// Time swapped in or out.
        pub ki_swtime: ::u_int,
        /// Number of copy-on-write faults.
        pub ki_cow: ::u_int,
        /// Real time in microsec.
        pub ki_runtime: u64,
        /// Starting time.
        pub ki_start: ::timeval,
        /// Time used by process children.
        pub ki_childtime: ::timeval,
        /// P_* flags.
        pub ki_flag: ::c_long,
        /// KI_* flags (below).
        pub ki_kiflag: ::c_long,
        /// Kernel trace points.
        pub ki_traceflag: ::c_int,
        /// S* process status.
        pub ki_stat: ::c_char,
        /// Process "nice" value.
        pub ki_nice: i8, // signed char
        /// Process lock (prevent swap) count.
        pub ki_lock: ::c_char,
        /// Run queue index.
        pub ki_rqindex: ::c_char,
        /// Which cpu we are on.
        pub ki_oncpu_old: ::c_uchar,
        /// Last cpu we were on.
        pub ki_lastcpu_old: ::c_uchar,
        /// Thread name.
        pub ki_tdname: [::c_char; ::TDNAMLEN + 1],
        /// Wchan message.
        pub ki_wmesg: [::c_char; ::WMESGLEN + 1],
        /// Setlogin name.
        pub ki_login: [::c_char; ::LOGNAMELEN + 1],
        /// Lock name.
        pub ki_lockname: [::c_char; ::LOCKNAMELEN + 1],
        /// Command name.
        pub ki_comm: [::c_char; ::COMMLEN + 1],
        /// Emulation name.
        pub ki_emul: [::c_char; ::KI_EMULNAMELEN + 1],
        /// Login class.
        pub ki_loginclass: [::c_char; ::LOGINCLASSLEN + 1],
        /// More thread name.
        pub ki_moretdname: [::c_char; ::MAXCOMLEN - ::TDNAMLEN + 1],
        /// Spare string space.
        pub ki_sparestrings: [[::c_char; 23]; 2], // little hack to allow PartialEq
        /// Spare room for growth.
        pub ki_spareints: [::c_int; ::KI_NSPARE_INT],
        /// Which cpu we are on.
        pub ki_oncpu: ::c_int,
        /// Last cpu we were on.
        pub ki_lastcpu: ::c_int,
        /// PID of tracing process.
        pub ki_tracer: ::c_int,
        /// P2_* flags.
        pub ki_flag2: ::c_int,
        /// Default FIB number.
        pub ki_fibnum: ::c_int,
        /// Credential flags.
        pub ki_cr_flags: ::u_int,
        /// Process jail ID.
        pub ki_jid: ::c_int,
        /// Number of threads in total.
        pub ki_numthreads: ::c_int,
        /// Thread ID.
        pub ki_tid: ::lwpid_t,
        /// Process priority.
        pub ki_pri: ::priority,
        /// Process rusage statistics.
        pub ki_rusage: ::rusage,
        /// rusage of children processes.
        pub ki_rusage_ch: ::rusage,
        // This is normally "struct pcb".
        /// Kernel virtual addr of pcb.
        pub ki_pcb: *mut ::c_void,
        /// Kernel virtual addr of stack.
        pub ki_kstack: *mut ::c_void,
        /// User convenience pointer.
        pub ki_udata: *mut ::c_void,
        // This is normally "struct thread".
        pub ki_tdaddr: *mut ::c_void,
        pub ki_spareptrs: [*mut ::c_void; ::KI_NSPARE_PTR],
        pub ki_sparelongs: [::c_long; ::KI_NSPARE_LONG],
        /// PS_* flags.
        pub ki_sflag: ::c_long,
        /// kthread flag.
        pub ki_tdflags: ::c_long,
    }
}

s_no_extra_traits! {
    pub struct dirent {
        pub d_fileno: ::ino_t,
        pub d_reclen: u16,
        pub d_type: u8,
        // Type of `d_namlen` changed from `char` to `u16` in FreeBSD 12:
        pub d_namlen: u8,
        pub d_name: [::c_char; 256],
    }

    pub struct statfs {
        pub f_version: u32,
        pub f_type: u32,
        pub f_flags: u64,
        pub f_bsize: u64,
        pub f_iosize: u64,
        pub f_blocks: u64,
        pub f_bfree: u64,
        pub f_bavail: i64,
        pub f_files: u64,
        pub f_ffree: i64,
        pub f_syncwrites: u64,
        pub f_asyncwrites: u64,
        pub f_syncreads: u64,
        pub f_asyncreads: u64,
        f_spare: [u64; 10],
        pub f_namemax: u32,
        pub f_owner: ::uid_t,
        pub f_fsid: ::fsid_t,
        f_charspare: [::c_char; 80],
        pub f_fstypename: [::c_char; 16],
        // Array length changed from 88 to 1024 in FreeBSD 12:
        pub f_mntfromname: [::c_char; 88],
        // Array length changed from 88 to 1024 in FreeBSD 12:
        pub f_mntonname: [::c_char; 88],
    }

    pub struct vnstat {
        pub vn_fileid: u64,
        pub vn_size: u64,
        pub vn_mntdir: *mut ::c_char,
        pub vn_dev: u32,
        pub vn_fsid: u32,
        pub vn_type: ::c_int,
        pub vn_mode: u16,
        pub vn_devname: [::c_char; ::SPECNAMELEN as usize + 1],
    }
}

cfg_if! {
    if #[cfg(feature = "extra_traits")] {
        impl PartialEq for statfs {
            fn eq(&self, other: &statfs) -> bool {
                self.f_version == other.f_version
                    && self.f_type == other.f_type
                    && self.f_flags == other.f_flags
                    && self.f_bsize == other.f_bsize
                    && self.f_iosize == other.f_iosize
                    && self.f_blocks == other.f_blocks
                    && self.f_bfree == other.f_bfree
                    && self.f_bavail == other.f_bavail
                    && self.f_files == other.f_files
                    && self.f_ffree == other.f_ffree
                    && self.f_syncwrites == other.f_syncwrites
                    && self.f_asyncwrites == other.f_asyncwrites
                    && self.f_syncreads == other.f_syncreads
                    && self.f_asyncreads == other.f_asyncreads
                    && self.f_namemax == other.f_namemax
                    && self.f_owner == other.f_owner
                    && self.f_fsid == other.f_fsid
                    && self.f_fstypename == other.f_fstypename
                    && self
                    .f_mntfromname
                    .iter()
                    .zip(other.f_mntfromname.iter())
                    .all(|(a,b)| a == b)
                    && self
                    .f_mntonname
                    .iter()
                    .zip(other.f_mntonname.iter())
                    .all(|(a,b)| a == b)
            }
        }
        impl Eq for statfs {}
        impl ::fmt::Debug for statfs {
            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
                f.debug_struct("statfs")
                    .field("f_bsize", &self.f_bsize)
                    .field("f_iosize", &self.f_iosize)
                    .field("f_blocks", &self.f_blocks)
                    .field("f_bfree", &self.f_bfree)
                    .field("f_bavail", &self.f_bavail)
                    .field("f_files", &self.f_files)
                    .field("f_ffree", &self.f_ffree)
                    .field("f_syncwrites", &self.f_syncwrites)
                    .field("f_asyncwrites", &self.f_asyncwrites)
                    .field("f_syncreads", &self.f_syncreads)
                    .field("f_asyncreads", &self.f_asyncreads)
                    .field("f_namemax", &self.f_namemax)
                    .field("f_owner", &self.f_owner)
                    .field("f_fsid", &self.f_fsid)
                    .field("f_fstypename", &self.f_fstypename)
                    .field("f_mntfromname", &&self.f_mntfromname[..])
                    .field("f_mntonname", &&self.f_mntonname[..])
                    .finish()
            }
        }
        impl ::hash::Hash for statfs {
            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
                self.f_version.hash(state);
                self.f_type.hash(state);
                self.f_flags.hash(state);
                self.f_bsize.hash(state);
                self.f_iosize.hash(state);
                self.f_blocks.hash(state);
                self.f_bfree.hash(state);
                self.f_bavail.hash(state);
                self.f_files.hash(state);
                self.f_ffree.hash(state);
                self.f_syncwrites.hash(state);
                self.f_asyncwrites.hash(state);
                self.f_syncreads.hash(state);
                self.f_asyncreads.hash(state);
                self.f_namemax.hash(state);
                self.f_owner.hash(state);
                self.f_fsid.hash(state);
                self.f_fstypename.hash(state);
                self.f_mntfromname.hash(state);
                self.f_mntonname.hash(state);
            }
        }

        impl PartialEq for dirent {
            fn eq(&self, other: &dirent) -> bool {
                self.d_fileno == other.d_fileno
                    && self.d_reclen == other.d_reclen
                    && self.d_type == other.d_type
                    && self.d_namlen == other.d_namlen
                    && self
                    .d_name[..self.d_namlen as _]
                    .iter()
                    .zip(other.d_name.iter())
                    .all(|(a,b)| a == b)
            }
        }
        impl Eq for dirent {}
        impl ::fmt::Debug for dirent {
            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
                f.debug_struct("dirent")
                    .field("d_fileno", &self.d_fileno)
                    .field("d_reclen", &self.d_reclen)
                    .field("d_type", &self.d_type)
                    .field("d_namlen", &self.d_namlen)
                    .field("d_name", &&self.d_name[..self.d_namlen as _])
                    .finish()
            }
        }
        impl ::hash::Hash for dirent {
            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
                self.d_fileno.hash(state);
                self.d_reclen.hash(state);
                self.d_type.hash(state);
                self.d_namlen.hash(state);
                self.d_name[..self.d_namlen as _].hash(state);
            }
        }

        impl PartialEq for vnstat {
            fn eq(&self, other: &vnstat) -> bool {
                let self_vn_devname: &[::c_char] = &self.vn_devname;
                let other_vn_devname: &[::c_char] = &other.vn_devname;

                self.vn_fileid == other.vn_fileid &&
                self.vn_size == other.vn_size &&
                self.vn_mntdir == other.vn_mntdir &&
                self.vn_dev == other.vn_dev &&
                self.vn_fsid == other.vn_fsid &&
                self.vn_type == other.vn_type &&
                self.vn_mode == other.vn_mode &&
                self_vn_devname == other_vn_devname
            }
        }
        impl Eq for vnstat {}
        impl ::fmt::Debug for vnstat {
            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
                let self_vn_devname: &[::c_char] = &self.vn_devname;

                f.debug_struct("vnstat")
                    .field("vn_fileid", &self.vn_fileid)
                    .field("vn_size", &self.vn_size)
                    .field("vn_mntdir", &self.vn_mntdir)
                    .field("vn_dev", &self.vn_dev)
                    .field("vn_fsid", &self.vn_fsid)
                    .field("vn_type", &self.vn_type)
                    .field("vn_mode", &self.vn_mode)
                    .field("vn_devname", &self_vn_devname)
                    .finish()
            }
        }
        impl ::hash::Hash for vnstat {
            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
                let self_vn_devname: &[::c_char] = &self.vn_devname;

                self.vn_fileid.hash(state);
                self.vn_size.hash(state);
                self.vn_mntdir.hash(state);
                self.vn_dev.hash(state);
                self.vn_fsid.hash(state);
                self.vn_type.hash(state);
                self.vn_mode.hash(state);
                self_vn_devname.hash(state);
            }
        }
    }
}

pub const ELAST: ::c_int = 96;
pub const RAND_MAX: ::c_int = 0x7fff_fffd;
pub const KI_NSPARE_PTR: usize = 6;
pub const MINCORE_SUPER: ::c_int = 0x20;
/// max length of devicename
pub const SPECNAMELEN: ::c_int = 63;

extern "C" {
    // Return type ::c_int was removed in FreeBSD 12
    pub fn setgrent() -> ::c_int;

    // Type of `addr` argument changed from `const void*` to `void*`
    // in FreeBSD 12
    pub fn mprotect(addr: *const ::c_void, len: ::size_t, prot: ::c_int) -> ::c_int;

    // Return type ::c_int was removed in FreeBSD 12
    pub fn freelocale(loc: ::locale_t) -> ::c_int;

    // Return type ::c_int changed to ::ssize_t in FreeBSD 12:
    pub fn msgrcv(
        msqid: ::c_int,
        msgp: *mut ::c_void,
        msgsz: ::size_t,
        msgtyp: ::c_long,
        msgflg: ::c_int,
    ) -> ::c_int;

    pub fn fdatasync(fd: ::c_int) -> ::c_int;
}

cfg_if! {
    if #[cfg(any(target_arch = "x86_64",
                 target_arch = "aarch64",
                 target_arch = "riscv64"))] {
        mod b64;
        pub use self::b64::*;
    }
}