diff options
| author | se146197 <none@none> | 2006-07-12 08:36:15 -0700 |
|---|---|---|
| committer | se146197 <none@none> | 2006-07-12 08:36:15 -0700 |
| commit | f952bcd50abdd4f13b290f1ca2a7c907a974f2bd (patch) | |
| tree | ca02add2b41b3741a49174abdbddd5531926b2f9 | |
| parent | 0f2065cc727eb1b7dcf65d01b5c2ccb67933a005 (diff) | |
| download | illumos-gate-f952bcd50abdd4f13b290f1ca2a7c907a974f2bd.tar.gz | |
6313308 S9 UDP anonymous port assigned used/unavailable ports.
| -rw-r--r-- | usr/src/uts/common/inet/udp/udp.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/usr/src/uts/common/inet/udp/udp.c b/usr/src/uts/common/inet/udp/udp.c index c2213c446b..11e6f6626c 100644 --- a/usr/src/uts/common/inet/udp/udp.c +++ b/usr/src/uts/common/inet/udp/udp.c @@ -1388,8 +1388,23 @@ udp_bind(queue_t *q, mblk_t *mp) * Check ipversion to allow IPv4 and IPv6 sockets to * have disjoint port number spaces. */ - if (udp->udp_ipversion != udp1->udp_ipversion) - continue; + if (udp->udp_ipversion != udp1->udp_ipversion) { + + /* + * On the first time through the loop, if the + * the user intentionally specified a + * particular port number, then ignore any + * bindings of the other protocol that may + * conflict. This allows the user to bind IPv6 + * alone and get both v4 and v6, or bind both + * both and get each seperately. On subsequent + * times through the loop, we're checking a + * port that we chose (not the user) and thus + * we do not allow casual duplicate bindings. + */ + if (count == 0 && requested_port != 0) + continue; + } /* * No difference depending on SO_REUSEADDR. |