On Fri, 17 Sep 2010 18:02:11 -0700 Chandra Seetharaman <sekharan at us.ibm.com> wrote: > Add argument passing to callback. > > Callback program is called with target name and ipv4 or ipv6 address (as > unsigned int parameters). > > For ipv4, initiator address from sin_addr.s_addr is sent as an unsigned > int argument. > > For example, when 10.0.0.1 is the initiator, the callback program > "/usr/local/bin/redirect" is called as > /usr/local/bin/redirect targetname 16777226 > > For ipv6, sin6_addr->s6_addr32[0] thru sin6_addr->s6_addr32[3] are sent > as four unisgned int arguments, as in > /usr/local/bin/redirect targetname 12345 98765 12233 34535 > > Signed-Off-By: Chandra Seetharaman <sekharan at us.ibm.com> > --- > usr/iscsi/target.c | 25 +++++++++++++++++++------ > 1 file changed, 19 insertions(+), 6 deletions(-) > > Index: tgt-1.0.8/usr/iscsi/target.c > =================================================================== > --- tgt-1.0.8.orig/usr/iscsi/target.c > +++ tgt-1.0.8/usr/iscsi/target.c > @@ -197,9 +197,27 @@ int target_redirected(struct iscsi_targe > socklen_t len; > int ret, rsn; > char *p, *q, *str, *port, *addr; > - char buffer[NI_MAXHOST + NI_MAXSERV + 4]; > + char buffer[NI_MAXHOST + NI_MAXSERV + 4], in_buf[1024]; > + > + len = sizeof(from); > + ret = conn->tp->ep_getpeername(conn, (struct sockaddr *)&from, &len); > + if (ret < 0) > + return 0; > > if (target->redirect_info.callback) { > + p = in_buf; > + p += sprintf(p, "%s ", target->redirect_info.callback); > + p += sprintf(p, "%s ", tgt_targetname(target->tid)); > + if (((struct sockaddr *)&from)->sa_family == AF_INET) > + sprintf(p, " %u", (((struct sockaddr_in *) > + &from)->sin_addr.s_addr)); > + else { > + struct in6_addr *a1 = &((struct sockaddr_in6 *) > + &from)->sin6_addr; > + sprintf(p, " %u %u %u %u", a1->s6_addr32[0], > + a1->s6_addr32[1], a1->s6_addr32[2], > + a1->s6_addr32[3]); The above means we get different arguments on big and little endian boxes? Passing an address string is simpler like the following? ipv4 -> 192.168.10.1:3260 ipv6 -> [2001:2c0:418:1::2]:3260 -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html |