* add NVMe drive info [model num, serial num, drive temp. etc.] * Ignore fuse partitions * Add the nvme logic only for linux * Move smart/nvme structs to a separate file Co-authored-by: wlan0 <sidharthamn@gmail.com>
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// +build linux
|
|
|
|
/*
|
|
* MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* This file has been adopted and then modified from Daniel Swarbrick's smart
|
|
* project residing at https://github.com/dswarbrick/smart
|
|
*
|
|
*/
|
|
|
|
package smart
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
"unsafe"
|
|
|
|
"github.com/dswarbrick/smart/ioctl"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// NVMe admin disk query constants
|
|
const (
|
|
NvmeAdminGetLogPage = 0x02
|
|
NvmeAdminIdentify = 0x06
|
|
)
|
|
|
|
var (
|
|
nvmeIoctlAdminCmd = ioctl.Iowr('N', 0x41, unsafe.Sizeof(nvmePassthruCommand{}))
|
|
)
|
|
|
|
// NewNVMeDevice creates a new NVMeDevice struct with name
|
|
func NewNVMeDevice(name string) *NVMeDevice {
|
|
return &NVMeDevice{name, -1}
|
|
}
|
|
|
|
// Open - open device file to find kernel info
|
|
func (d *NVMeDevice) Open() (err error) {
|
|
d.fd, err = unix.Open(d.Name, unix.O_RDWR, 0600)
|
|
return err
|
|
}
|
|
|
|
// Close - closes device file
|
|
func (d *NVMeDevice) Close() error {
|
|
return unix.Close(d.fd)
|
|
}
|
|
|
|
func (d *NVMeDevice) readLogPage(logID uint8, buf *[]byte) error {
|
|
bufLen := len(*buf)
|
|
|
|
if (bufLen < 4) || (bufLen > 0x4000) || (bufLen%4 != 0) {
|
|
return fmt.Errorf("Invalid buffer size")
|
|
}
|
|
|
|
cmd := nvmePassthruCommand{
|
|
opcode: NvmeAdminGetLogPage,
|
|
nsid: 0xffffffff, // FIXME
|
|
addr: uint64(uintptr(unsafe.Pointer(&(*buf)[0]))),
|
|
dataLen: uint32(bufLen),
|
|
cdw10: uint32(logID) | (((uint32(bufLen) / 4) - 1) << 16),
|
|
}
|
|
|
|
return ioctl.Ioctl(uintptr(d.fd), nvmeIoctlAdminCmd, uintptr(unsafe.Pointer(&cmd)))
|
|
}
|
|
|
|
// le128ToBigInt takes a little-endian 16-byte slice and returns a *big.Int representing it.
|
|
func le128ToBigInt(buf [16]byte) *big.Int {
|
|
// Int.SetBytes() expects big-endian input, so reverse the bytes locally first
|
|
rev := make([]byte, 16)
|
|
for x := 0; x < 16; x++ {
|
|
rev[x] = buf[16-x-1]
|
|
}
|
|
|
|
return new(big.Int).SetBytes(rev)
|
|
}
|