// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || netbsd || openbsd

package syscall

import (
	"unsafe"
)

// pgid should really be pid_t, however _C_int (aka int32) is generally
// equivalent.

func Tcgetpgrp(fd int) (pgid int32, err error) {
	if err := ioctlPtr(fd, TIOCGPGRP, unsafe.Pointer(&pgid)); err != nil {
		return -1, err
	}
	return pgid, nil
}

}

func Pipe(p []int) error {
	return Pipe2(p, 0)
}

//sysnb pipe2(p *[2]_C_int, flags int) (err error)

func Pipe2(p []int, flags int) error {
	if len(p) != 2 {
		return EINVAL
	}
	var pp [2]_C_int
	err := pipe2(&pp, flags)
	if err == nil {
		p[0] = int(pp[0])
		p[1] = int(pp[1])
	}
	return err
}

// which consists of network facility information, states and
// parameters.
//
// Deprecated: Use golang.org/x/net/route instead.
func RouteRIB(facility, param int) ([]byte, error) {
	mib := []_C_int{CTL_NET, AF_ROUTE, 0, 0, _C_int(facility), _C_int(param)}
	// Find size.
	n := uintptr(0)
	if err := sysctl(mib, nil, &n, nil, 0); err != nil {
		return nil, err
	}
	if n == 0 {
		return nil, nil
	}
	tab := make([]byte, n)

// Code generated by the command above; DO NOT EDIT.

package syscall;

type mibentry struct {
	ctlname string
	ctloid []_C_int
}

var sysctlMib = []mibentry {
EOF

foreach my $name (sort keys %sysctl) {
	my @oid = @{$sysctl{$name}};
	print "\t{ \"$name\", []_C_int{ ", join(', ', @oid), " } }, \n";
}

print <<EOF;
}

		Name: _C_GoString(_C_gr_name(grp)),
	}
	return g
}

type bufferKind _C_int

var (
	userBuffer  = bufferKind(_C__SC_GETPW_R_SIZE_MAX)
	groupBuffer = bufferKind(_C__SC_GETGR_R_SIZE_MAX)
)

func (k bufferKind) initialSize() _C_size_t {
	sz := _C_sysconf(_C_int(k))
	if sz == -1 {
		// DragonFly and FreeBSD do not have _SC_GETPW_R_SIZE_MAX.

	return syscall.Signal(w>>shift) & 0xFF
}

func (w WaitStatus) TrapCause() int { return -1 }

//sys	wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	var status _C_int
	wpid, err = wait4(pid, &status, options, rusage)
	if wstatus != nil {
		*wstatus = WaitStatus(status)
	}
	return
}

	{
		int _mp_alloc;
		int _mp_size;
		mp_limb_t *_mp_d;
	} __mpz_struct;

	typedef __mpz_struct mpz_t[1];

Cgo generates:

	type _C_int int32
	type _C_mp_limb_t uint64
	type _C___mpz_struct struct {
		_mp_alloc _C_int;
		_mp_size _C_int;
		_mp_d *_C_mp_limb_t;
	}
	type _C_mpz_t [1]_C___mpz_struct

and then replaces each occurrence of a type C.xxx with _C_xxx.

	sizeofInt      = C.sizeof_int
	sizeofLong     = C.sizeof_long
	sizeofLongLong = C.sizeof_longlong
	PathMax        = C.PATH_MAX
)

// Basic types

type (
	_C_short     C.short
	_C_int       C.int
	_C_long      C.long
	_C_long_long C.longlong
)

// Time

type Timespec C.struct_timespec

type Timeval C.struct_timeval

type Timeval32 C.struct_timeval32

func Getdents(fd int, buf []byte) (n int, err error) {
	return getdirent(fd, buf)
}

//sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	var status _C_int
	var r Pid_t
	err = ERESTART
	// AIX wait4 may return with ERESTART errno, while the processus is still
	// active.

}

//sysnb	getresuid(ruid *_C_int, euid *_C_int, suid *_C_int)
//sysnb	getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int)

func Getresuid() (ruid, euid, suid int) {
	var r, e, s _C_int
	getresuid(&r, &e, &s)
	return int(r), int(e), int(s)
}

func Getresgid() (rgid, egid, sgid int) {
	var r, e, s _C_int
	getresgid(&r, &e, &s)
	return int(r), int(e), int(s)
}