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