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xinetd
xinetd-2.3.14-ipv6-ipv4-fallback.patch
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File xinetd-2.3.14-ipv6-ipv4-fallback.patch of Package xinetd
Index: xinetd/confparse.c =================================================================== --- xinetd/confparse.c.orig +++ xinetd/confparse.c @@ -544,10 +544,9 @@ static status_e service_attr_check( stru } if( SC_IPV4( scp ) && SC_IPV6( scp ) ) { - msg( LOG_ERR, func, - "Service %s specified as both IPv4 and IPv6 - DISABLING", + msg( LOG_INFO, func, + "Service %s will use IPv6 or fallback to IPv4", SC_NAME(scp)); - return FAILED ; } /* Index: xinetd/service.c =================================================================== --- xinetd/service.c.orig +++ xinetd/service.c @@ -336,12 +336,29 @@ status_e svc_activate( struct service *s return( OK ); } - if( SC_IPV4( scp ) ) { + if( SC_IPV4( scp ) && !SC_IPV6(scp) ) { SVC_FD(sp) = socket( AF_INET, SC_SOCKET_TYPE( scp ), SC_PROTOVAL( scp ) ) ; } else if( SC_IPV6( scp ) ) { SVC_FD(sp) = socket( AF_INET6, SC_SOCKET_TYPE( scp ), SC_PROTOVAL( scp ) ) ; + /* service with IPv6-IPv4 fallback + * - if IPv6 succeeds, use IPv6 and clear the IPv4 flag + * - if IPv6 fails, use IPv4 socket and clear the IPv6 flag + */ + if( SVC_FD(sp) == -1 ) { + if( SC_IPV4(scp) ) { + msg( LOG_INFO, func, + "IPv6 socket creation failed (%m), service = %s", SC_ID( scp ) ); + msg( LOG_INFO, func, + "falling back to IPv4, service = %s", SC_ID( scp ) ); + M_CLEAR(SC_XFLAGS(scp), SF_IPV6); + SVC_FD(sp) = socket( AF_INET, + SC_SOCKET_TYPE( scp ), SC_PROTOVAL( scp ) ) ; + } + } else { + M_CLEAR(SC_XFLAGS(scp), SF_IPV4); + } } if ( SVC_FD(sp) == -1 ) Index: etc/xinetd.d/chargen =================================================================== --- etc/xinetd.d/chargen.orig +++ etc/xinetd.d/chargen @@ -10,4 +10,5 @@ service chargen user = root wait = no disable = yes + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/chargen-udp =================================================================== --- etc/xinetd.d/chargen-udp.orig +++ etc/xinetd.d/chargen-udp @@ -11,4 +11,5 @@ service chargen wait = yes disable = yes port = 19 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/daytime =================================================================== --- etc/xinetd.d/daytime.orig +++ etc/xinetd.d/daytime @@ -10,4 +10,5 @@ service daytime user = root wait = no disable = yes + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/daytime-udp =================================================================== --- etc/xinetd.d/daytime-udp.orig +++ etc/xinetd.d/daytime-udp @@ -11,4 +11,5 @@ service daytime wait = yes disable = yes port = 13 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/discard =================================================================== --- etc/xinetd.d/discard.orig +++ etc/xinetd.d/discard @@ -10,4 +10,5 @@ service discard user = root wait = no disable = yes + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/discard-udp =================================================================== --- etc/xinetd.d/discard-udp.orig +++ etc/xinetd.d/discard-udp @@ -11,4 +11,5 @@ service discard wait = yes disable = yes port = 9 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/echo =================================================================== --- etc/xinetd.d/echo.orig +++ etc/xinetd.d/echo @@ -10,4 +10,5 @@ service echo user = root wait = no disable = yes + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/echo-udp =================================================================== --- etc/xinetd.d/echo-udp.orig +++ etc/xinetd.d/echo-udp @@ -11,4 +11,5 @@ service echo wait = yes disable = yes port = 7 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/servers =================================================================== --- etc/xinetd.d/servers.orig +++ etc/xinetd.d/servers @@ -10,4 +10,5 @@ service servers wait = no disable = yes only_from = 127.0.0.1 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/services =================================================================== --- etc/xinetd.d/services.orig +++ etc/xinetd.d/services @@ -10,4 +10,5 @@ service services wait = no disable = yes only_from = 127.0.0.1 + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/time =================================================================== --- etc/xinetd.d/time.orig +++ etc/xinetd.d/time @@ -11,4 +11,5 @@ service time user = root wait = no disable = yes + FLAGS = IPv6 IPv4 } Index: etc/xinetd.d/time-udp =================================================================== --- etc/xinetd.d/time-udp.orig +++ etc/xinetd.d/time-udp @@ -11,4 +11,5 @@ service time wait = yes disable = yes port = 37 + FLAGS = IPv6 IPv4 } Index: xinetd/xinetd.conf.man =================================================================== --- xinetd/xinetd.conf.man.orig +++ xinetd/xinetd.conf.man @@ -144,6 +144,10 @@ Sets the service to be an IPv4 service ( .TP .B IPv6 Sets the service to be an IPv6 service (AF_INET6), if IPv6 is available on the system. +If you give both the IPv4 and IPv6 flag, then xinetd will first try to create +an IPv6 service (wich can accept IPv4 connections by default), and if that +fails (ie. the operating system doesn't have IPv6 support), it will create an +IPv4 service. .TP .B LABELED The LABELED flag will tell xinetd to change the child processes SE Linux context to match that of the incoming connection as it starts the service. This only works for external tcp non-waiting servers and is an error if applied to an internal, udp, or tcp-wait server.
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