On Sun, 10 Oct 2004, Robert Watson wrote: > On Sun, 10 Oct 2004 [EMAIL PROTECTED] wrote: > > > FreeBSD 5.3-BETA7 Sun Oct 10 18:50:14 OMSST 2004 > > > > ospfd (net/quagga from ports) run with credentials of quagga:quagga and > > unable to set multicast options now. > > > > OSPF: can't setsockopt IP_ADD_MEMBERSHIP (AllSPFRouters): \ > > Operation not permitted > > OSPF: can't setsockopt IP_MULTICAST_LOOP(0): Operation not permitted > > OSPF: can't setsockopt IP_MULTICAST_TTL(1): Operation not permitted > > OSPF: can't setsockopt IP_MULTICAST_IF: Operation not permitted > > > > 5.2-CURRENT and 5.2.1 have no problem. > > This appears to have been introduced as a result of changes to permit > root to bind raw sockets in jail. In particular, the likely control > flow path to get the above errors was to perform setsockopt() on a UDP > socket, which probaly works its way down to in_control() to > ip_ctloutput(). This would also explain why sdr stopped working for me > a little while ago (I figured it was a bad package build). I've CC'd > Christian as he might have some insight into how to clean this up.
The bug is now neatly illustrated by the ipsockopt regression test: 6.x: paprika# ./ipsockopt Running tests with ruid 0 euid 0 sock uid 0 Running tests with ruid 0 euid 65534 sock uid 65534 Running tests with ruid 0 euid 65534 sock uid 0 ipsockopt: test_ip_uchar(SOCK_RAW, IP_TOS): initial getsockopt(): Operation not permitted 5.x: Running tests with ruid 0 euid 0 sock uid 0 Running tests with ruid 0 euid 65534 sock uid 65534 Running tests with ruid 0 euid 65534 sock uid 0 PASS The socket option operation works fine except in the case where a raw socket was created as root, and then privilege was downgraded to the normal user, at which point the process tries a socket option operation (apparently of any sort, not just multicast). I'm surprised more things haven't broken, such as aspects of ping(8). Maybe they have and nobody has noticed :-). Robert N M Watson FreeBSD Core Team, TrustedBSD Projects [EMAIL PROTECTED] Principal Research Scientist, McAfee Research _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
