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// battery
// Copyright (C) 2016 Karol 'Kenji Takahashi' Woźniak
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// +build freebsd dragonfly netbsd
package battery
import (
"unsafe"
"golang.org/x/sys/unix"
)
func ioctl(fd int, nr int64, typ byte, size uintptr, retptr unsafe.Pointer) error {
_, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(fd),
// Some magicks derived from sys/ioccom.h.
uintptr((0x40000000|0x80000000)|
((int64(size)&(1<<13-1))<<16)|
(int64(typ)<<8)|
nr,
),
uintptr(retptr),
)
if errno != 0 {
return errno
}
return nil
}
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