net.Interfaces on Linux have null-terminated Names #1942
Description
Before filing a bug, please check whether it has been fixed since
the latest release: run "hg pull -u" and retry what you did to
reproduce the problem. Thanks.
What steps will reproduce the problem?
package main
import "net"
import "log"
func main() {
for i := 1;; i++ {
iface, err := net.InterfaceByIndex(i)
if err != nil {
log.Printf("iface: %s\n", err)
break
}
log.Printf("Interface %q\n", iface.Name)
if !iface.IsUp() {
log.Printf(" - Down\n")
continue
}
log.Printf(" - MAC : %s\n", iface.HardwareAddr)
addrs, err := iface.Addrs()
if err != nil {
log.Printf("iface: %s\n", err)
continue
}
for _, addr := range addrs {
log.Printf(" - Addr: %s\n", addr)
}
}
}
What is the expected output?
2011/06/10 08:46:43 Interface "lo" //<--
2011/06/10 08:46:43 - MAC :
2011/06/10 08:46:43 - Addr: 127.0.0.1
2011/06/10 08:46:43 - Addr: ::1
2011/06/10 08:46:43 Interface "eth0"
2011/06/10 08:46:43 - MAC : <REDACTED>
2011/06/10 08:46:43 - Addr: <REDACTED>
What do you see instead?
2011/06/10 08:46:43 Interface "lo\x00" //<--
2011/06/10 08:46:43 - MAC :
2011/06/10 08:46:43 - Addr: 127.0.0.1
2011/06/10 08:46:43 - Addr: ::1
2011/06/10 08:46:43 Interface "eth0\x00"
2011/06/10 08:46:43 - MAC : <REDACTED>
2011/06/10 08:46:43 - Addr: <REDACTED>
Which compiler are you using (5g, 6g, 8g, gccgo)?
6g version weekly.2011-06-09 8707+
Which operating system are you using?
Linux x86_64
Which revision are you using? (hg identify)
8818ac606e92+ tip
Please provide any additional information below.
I suspect this line needs a "[:len(...)-1]":
http://localhost:8080/src/pkg/net/interface_linux.go#L115