diff options
Diffstat (limited to 'libgo/go/net/lookup_plan9.go')
| -rw-r--r-- | libgo/go/net/lookup_plan9.go | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/libgo/go/net/lookup_plan9.go b/libgo/go/net/lookup_plan9.go index ae7cf79..94c5533 100644 --- a/libgo/go/net/lookup_plan9.go +++ b/libgo/go/net/lookup_plan9.go @@ -7,7 +7,6 @@ package net import ( "errors" "os" - "syscall" ) func query(filename, query string, bufSize int) (res []string, err error) { @@ -70,9 +69,26 @@ func queryDNS(addr string, typ string) (res []string, err error) { return query("/net/dns", addr+" "+typ, 1024) } +// lookupProtocol looks up IP protocol name and returns +// the corresponding protocol number. func lookupProtocol(name string) (proto int, err error) { - // TODO: Implement this - return 0, syscall.EPLAN9 + lines, err := query("/net/cs", "!protocol="+name, 128) + if err != nil { + return 0, err + } + unknownProtoError := errors.New("unknown IP protocol specified: " + name) + if len(lines) == 0 { + return 0, unknownProtoError + } + f := getFields(lines[0]) + if len(f) < 2 { + return 0, unknownProtoError + } + s := f[1] + if n, _, ok := dtoi(s, byteIndex(s, '=')+1); ok { + return n, nil + } + return 0, unknownProtoError } func lookupHost(host string) (addrs []string, err error) { |