diff options
Diffstat (limited to 'vendor/golang.org/x/net/ipv4/sys_darwin.go')
| -rw-r--r-- | vendor/golang.org/x/net/ipv4/sys_darwin.go | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/vendor/golang.org/x/net/ipv4/sys_darwin.go b/vendor/golang.org/x/net/ipv4/sys_darwin.go index bc694141c..abfffca87 100644 --- a/vendor/golang.org/x/net/ipv4/sys_darwin.go +++ b/vendor/golang.org/x/net/ipv4/sys_darwin.go @@ -6,6 +6,8 @@ package ipv4 import ( "net" + "strconv" + "strings" "syscall" "unsafe" ) @@ -36,41 +38,40 @@ var ( func init() { // Seems like kern.osreldate is veiled on latest OS X. We use // kern.osrelease instead. - osver, err := syscall.Sysctl("kern.osrelease") + s, err := syscall.Sysctl("kern.osrelease") if err != nil { return } - var i int - for i = range osver { - if osver[i] == '.' { - break - } + ss := strings.Split(s, ".") + if len(ss) == 0 { + return } // The IP_PKTINFO and protocol-independent multicast API were - // introduced in OS X 10.7 (Darwin 11.0.0). But it looks like - // those features require OS X 10.8 (Darwin 12.0.0) and above. + // introduced in OS X 10.7 (Darwin 11). But it looks like + // those features require OS X 10.8 (Darwin 12) or above. // See http://support.apple.com/kb/HT1633. - if i > 2 || i == 2 && osver[0] >= '1' && osver[1] >= '2' { - ctlOpts[ctlPacketInfo].name = sysIP_PKTINFO - ctlOpts[ctlPacketInfo].length = sizeofInetPktinfo - ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo - ctlOpts[ctlPacketInfo].parse = parsePacketInfo - sockOpts[ssoPacketInfo].name = sysIP_RECVPKTINFO - sockOpts[ssoPacketInfo].typ = ssoTypeInt - sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn - sockOpts[ssoJoinGroup].name = sysMCAST_JOIN_GROUP - sockOpts[ssoJoinGroup].typ = ssoTypeGroupReq - sockOpts[ssoLeaveGroup].name = sysMCAST_LEAVE_GROUP - sockOpts[ssoLeaveGroup].typ = ssoTypeGroupReq - sockOpts[ssoJoinSourceGroup].name = sysMCAST_JOIN_SOURCE_GROUP - sockOpts[ssoJoinSourceGroup].typ = ssoTypeGroupSourceReq - sockOpts[ssoLeaveSourceGroup].name = sysMCAST_LEAVE_SOURCE_GROUP - sockOpts[ssoLeaveSourceGroup].typ = ssoTypeGroupSourceReq - sockOpts[ssoBlockSourceGroup].name = sysMCAST_BLOCK_SOURCE - sockOpts[ssoBlockSourceGroup].typ = ssoTypeGroupSourceReq - sockOpts[ssoUnblockSourceGroup].name = sysMCAST_UNBLOCK_SOURCE - sockOpts[ssoUnblockSourceGroup].typ = ssoTypeGroupSourceReq + if mjver, err := strconv.Atoi(ss[0]); err != nil || mjver < 12 { + return } + ctlOpts[ctlPacketInfo].name = sysIP_PKTINFO + ctlOpts[ctlPacketInfo].length = sizeofInetPktinfo + ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo + ctlOpts[ctlPacketInfo].parse = parsePacketInfo + sockOpts[ssoPacketInfo].name = sysIP_RECVPKTINFO + sockOpts[ssoPacketInfo].typ = ssoTypeInt + sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn + sockOpts[ssoJoinGroup].name = sysMCAST_JOIN_GROUP + sockOpts[ssoJoinGroup].typ = ssoTypeGroupReq + sockOpts[ssoLeaveGroup].name = sysMCAST_LEAVE_GROUP + sockOpts[ssoLeaveGroup].typ = ssoTypeGroupReq + sockOpts[ssoJoinSourceGroup].name = sysMCAST_JOIN_SOURCE_GROUP + sockOpts[ssoJoinSourceGroup].typ = ssoTypeGroupSourceReq + sockOpts[ssoLeaveSourceGroup].name = sysMCAST_LEAVE_SOURCE_GROUP + sockOpts[ssoLeaveSourceGroup].typ = ssoTypeGroupSourceReq + sockOpts[ssoBlockSourceGroup].name = sysMCAST_BLOCK_SOURCE + sockOpts[ssoBlockSourceGroup].typ = ssoTypeGroupSourceReq + sockOpts[ssoUnblockSourceGroup].name = sysMCAST_UNBLOCK_SOURCE + sockOpts[ssoUnblockSourceGroup].typ = ssoTypeGroupSourceReq } func (pi *inetPktinfo) setIfindex(i int) { |