You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.6 KiB
94 lines
2.6 KiB
9 years ago
|
/*
|
||
|
|
* Minio Cloud Storage, (C) 2016 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
"net"
|
||
|
|
"os"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Make sure that none of the other processes are listening on the
|
||
|
|
// specified port on any of the interfaces.
|
||
|
|
//
|
||
|
|
// On linux if a process is listening on 127.0.0.1:9000 then Listen()
|
||
|
|
// on ":9000" fails with the error "port already in use".
|
||
|
|
// However on Mac OSX Listen() on ":9000" falls back to the IPv6 address.
|
||
|
|
// This causes confusion on Mac OSX that minio server is not reachable
|
||
|
|
// on 127.0.0.1 even though minio server is running. So before we start
|
||
|
|
// the minio server we make sure that the port is free on all the IPs.
|
||
|
|
func checkPortAvailability(port int) {
|
||
|
|
isAddrInUse := func(err error) bool {
|
||
|
|
// Check if the syscall error is EADDRINUSE.
|
||
|
|
// EADDRINUSE is the system call error if another process is
|
||
|
|
// already listening at the specified port.
|
||
|
|
neterr, ok := err.(*net.OpError)
|
||
|
|
if !ok {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
osErr, ok := neterr.Err.(*os.SyscallError)
|
||
|
|
if !ok {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
sysErr, ok := osErr.Err.(syscall.Errno)
|
||
|
|
if !ok {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
if sysErr != syscall.EADDRINUSE {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
ifcs, err := net.Interfaces()
|
||
|
|
if err != nil {
|
||
|
|
fatalIf(err, "Unable to list interfaces.")
|
||
|
|
}
|
||
|
|
for _, ifc := range ifcs {
|
||
|
|
addrs, err := ifc.Addrs()
|
||
|
|
if err != nil {
|
||
|
|
fatalIf(err, "Unable to list addresses on interface %s.", ifc.Name)
|
||
|
|
}
|
||
|
|
for _, addr := range addrs {
|
||
|
|
ipnet, ok := addr.(*net.IPNet)
|
||
|
|
if !ok {
|
||
|
|
errorIf(errors.New(""), "Failed to assert type on (*net.IPNet) interface.")
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
ip := ipnet.IP
|
||
|
|
network := "tcp4"
|
||
|
|
if ip.To4() == nil {
|
||
|
|
network = "tcp6"
|
||
|
|
}
|
||
|
|
tcpAddr := net.TCPAddr{IP: ip, Port: port, Zone: ifc.Name}
|
||
|
|
l, err := net.ListenTCP(network, &tcpAddr)
|
||
|
|
if err != nil {
|
||
|
|
if isAddrInUse(err) {
|
||
|
|
// Fail if port is already in use.
|
||
|
|
fatalIf(err, "Unable to listen on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
|
||
|
|
} else {
|
||
|
|
// Ignore other errors.
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if err = l.Close(); err != nil {
|
||
|
|
fatalIf(err, "Unable to close listener on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|