tidb sys_other 源码
tidb sys_other 代码
文件路径：/util/sys/linux/sys_other.go
// Copyright 2019 PingCAP, 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.
//go:build !linux && !windows
package linux
import (
"net"
"runtime"
"golang.org/x/sys/unix"
)
// OSVersion returns version info of operation system.
// for non-linux system will only return os and arch info.
func OSVersion() (osVersion string, err error) {
osVersion = runtime.GOOS + "." + runtime.GOARCH
return
}
// SetAffinity sets cpu affinity.
func SetAffinity(_ []int) error {
return nil
}
// GetSockUID gets the uid of the other end of the UNIX domain socket
func GetSockUID(uc net.UnixConn) (uid uint32, err error) {
raw, err := uc.SyscallConn()
if err != nil {
return 0, err
}
var cred *unix.Xucred
err = raw.Control(func(fd uintptr) {
cred, err = unix.GetsockoptXucred(int(fd),
unix.SOL_LOCAL,
unix.LOCAL_PEERCRED)
})
if err != nil {
return 0, err
}
return cred.Uid, nil
}
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