int
query_entity_id(isns_client_t *clnt, int argc, char **argv)
{
isns_attr_list_t query_key = ISNS_ATTR_LIST_INIT;
isns_object_list_t objects = ISNS_OBJECT_LIST_INIT;
uint32_t status;
isns_simple_t *qry;
const char *eid;
if (argc == 1 && !strcmp(argv[0], "help")) {
printf("Query iSNS for own entity ID.\n"
"No arguments allowed\n");
exit(0);
}
if (argc != 0)
isns_fatal("EID query - no arguments accepted\n");
isns_attr_list_append_string(&query_key,
ISNS_TAG_ISCSI_NAME,
isns_config.ic_source_name);
qry = isns_create_query(clnt, &query_key);
isns_attr_list_destroy(&query_key);
isns_query_request_attr_tag(qry, ISNS_TAG_ENTITY_IDENTIFIER);
status = isns_client_call(clnt, &qry);
if (status != ISNS_SUCCESS) {
isns_error("Query failed: %s\n", isns_strerror(status));
return status;
}
status = isns_query_response_get_objects(qry, &objects);
if (status) {
isns_error("Unable to extract object list from query response: %s\n",
isns_strerror(status), status);
return status;
}
status = ISNS_NO_SUCH_ENTRY;
if (objects.iol_count == 0) {
isns_error("Node %s not registered with iSNS\n",
isns_config.ic_source_name);
} else
if (!isns_object_get_string(objects.iol_data[0],
ISNS_TAG_ENTITY_IDENTIFIER, &eid)) {
isns_error("Query for %s returned an object without EID\n",
isns_config.ic_source_name);
} else {
printf("%s\n", eid);
status = ISNS_SUCCESS;
}
isns_object_list_destroy(&objects);
isns_simple_free(qry);
return status;
}
int
deregister_domain(isns_client_t *clnt, int argc, char **argv)
{
isns_attr_list_t attrs = ISNS_ATTR_LIST_INIT;
isns_simple_t *msg;
uint32_t dd_id, status;
if (!parse_dd_deregistration(argv, argc, &dd_id, &attrs))
isns_fatal("Unable to parse DD registration\n");
msg = isns_create_dd_deregistration(clnt, dd_id, &attrs);
isns_attr_list_destroy(&attrs);
if (msg == NULL) {
isns_error("Cannot create message\n");
return ISNS_INTERNAL_ERROR;
}
status = isns_client_call(clnt, &msg);
if (status != ISNS_SUCCESS) {
isns_error("Deregistration failed: %s\n",
isns_strerror(status));
return status;
}
isns_simple_free(msg);
return status;
}
int
query_objects(isns_client_t *clnt, int argc, char **argv)
{
isns_attr_list_t query_key = ISNS_ATTR_LIST_INIT;
isns_attr_list_t oper_attrs = ISNS_ATTR_LIST_INIT;
isns_object_list_t objects = ISNS_OBJECT_LIST_INIT;
uint32_t status;
isns_simple_t *qry;
unsigned int i;
if (!parse_query(argv, argc, &query_key, &oper_attrs))
isns_fatal("Unable to parse query\n");
qry = isns_create_query(clnt, &query_key);
isns_attr_list_destroy(&query_key);
/* Add the list of attributes we request */
for (i = 0; i < oper_attrs.ial_count; ++i)
isns_query_request_attr(qry, oper_attrs.ial_data[i]);
isns_attr_list_destroy(&oper_attrs);
status = isns_client_call(clnt, &qry);
if (status != ISNS_SUCCESS) {
isns_error("Query failed: %s\n", isns_strerror(status));
return status;
}
status = isns_query_response_get_objects(qry, &objects);
if (status) {
isns_error("Unable to extract object list from query response: %s\n",
isns_strerror(status), status);
return status;
}
isns_object_list_print(&objects, isns_print_stdout);
isns_object_list_destroy(&objects);
isns_simple_free(qry);
return status;
}
int
deregister_objects(isns_client_t *clnt, int argc, char **argv)
{
isns_attr_list_t query_key = ISNS_ATTR_LIST_INIT;
isns_object_list_t objects = ISNS_OBJECT_LIST_INIT;
isns_simple_t *dereg;
uint32_t status;
if (!parse_deregistration(argv, argc, &query_key))
isns_fatal("Unable to parse unregistration\n");
dereg = isns_create_deregistration(clnt, &query_key);
isns_attr_list_destroy(&query_key);
status = isns_client_call(clnt, &dereg);
if (status != ISNS_SUCCESS) {
isns_error("Deregistration failed: %s\n",
isns_strerror(status));
return status;
}
#if 0
status = isns_dereg_msg_response_get_objects(dereg, &objects);
if (status) {
isns_error("Unable to extract object list from deregistration response: %s\n",
isns_strerror(status), status);
goto done;
}
isns_object_list_print(&objects, isns_print_stdout);
#endif
isns_object_list_destroy(&objects);
isns_simple_free(dereg);
return status;
}
int
list_objects(isns_client_t *clnt, int argc, char **argv)
{
isns_attr_list_t query_keys = ISNS_ATTR_LIST_INIT;
isns_object_template_t *query_type = NULL;
isns_simple_t *simp;
int status, count = 0;
if (!parse_list(argc, argv, &query_type, &query_keys))
isns_fatal("Unable to parse parameters\n");
simp = isns_create_getnext(clnt, query_type, &query_keys);
while (1) {
isns_object_t *obj = NULL;
isns_simple_t *followup;
status = isns_client_call(clnt, &simp);
if (status)
break;
status = isns_getnext_response_get_object(simp, &obj);
if (status)
break;
printf("Object %u:\n", count++);
isns_object_print(obj, isns_print_stdout);
isns_object_release(obj);
followup = isns_create_getnext_followup(clnt,
simp, &query_keys);
isns_simple_free(simp);
simp = followup;
}
if (status == ISNS_SOURCE_UNAUTHORIZED
&& query_type == &isns_policy_template
&& !opt_local)
isns_warning("Please use --local trying to list policies\n");
if (status != ISNS_NO_SUCH_ENTRY) {
isns_error("GetNext call failed: %s\n",
isns_strerror(status));
return status;
}
return ISNS_SUCCESS;
}
static int
__register_objects(isns_client_t *clnt,
isns_object_t *key_obj,
const isns_object_list_t *objects)
{
isns_source_t *source = NULL;
isns_simple_t *reg;
uint32_t status;
unsigned int i;
for (i = 0; i < objects->iol_count && !source; ++i) {
isns_object_t *obj = objects->iol_data[i];
if (!isns_object_is_iscsi_node(obj))
continue;
source = isns_source_from_object(obj);
}
reg = isns_create_registration2(clnt, key_obj, source);
isns_registration_set_replace(reg, opt_replace);
/* Add all objects to be registered */
for (i = 0; i < objects->iol_count; ++i)
isns_registration_add_object(reg, objects->iol_data[i]);
status = isns_client_call(clnt, ®);
isns_simple_free(reg);
if (status == ISNS_SUCCESS)
printf("Successfully registered object(s)\n");
else
isns_error("Failed to register object(s): %s\n",
isns_strerror(status));
if (source)
isns_source_release(source);
return status;
}
int
main(int argc, char **argv)
{
const char *opt_configfile = ISNS_DEFAULT_ISNSADM_CONFIG;
isns_client_t *clnt;
isns_attr_list_t *attrs;
isns_simple_t *reg;
isns_portal_info_t portal_info;
uint32_t status;
int opt_replace = 1;
int c, n, timeout;
while ((c = getopt(argc, argv, "c:d:n")) != -1) {
switch (c) {
case 'c':
opt_configfile = optarg;
break;
case 'd':
isns_enable_debugging(optarg);
break;
case 'n':
opt_replace = 0;
break;
default:
isns_fatal("Unknown option\n");
}
}
if (optind != argc - 1)
isns_fatal("Need timeout argument\n");
timeout = parse_timeout(argv[optind]);
isns_read_config(opt_configfile);
/*
---DevAttrReg[REPLACE]---
Source:
0020 string : iSCSI name = "iqn.2005-03.org.open-iscsi:blue"
Message attributes:
0001 string : Entity identifier = "blue.pauw.homeunix.net"
Operating attributes:
0001 string : Entity identifier = "blue.pauw.homeunix.net"
0002 uint32 : Entity protocol = iSCSI (2)
0010 ipaddr : Portal IP address = 192.168.1.2
0011 uint32 : Portal TCP/UDP port = 33849/tcp
0014 uint32 : ESI port = 56288/tcp
0020 string : iSCSI name = "iqn.2005-03.org.open-iscsi:blue"
0021 uint32 : iSCSI node type = Initiator
0022 string : iSCSI alias = "blue.pauw.homeunix.net"
[...]
response status 0x0003 (Invalid registration)
This would fail because we got confused about EID in
the replace case.
*/
isns_assign_string(&isns_config.ic_source_name,
"iqn.2005-03.org.open-iscsi:blue");
for (n = 0; n < 2; ++n) {
clnt = isns_create_default_client(NULL);
reg = isns_simple_create(ISNS_DEVICE_ATTRIBUTE_REGISTER,
clnt->ic_source, NULL);
reg->is_replace = opt_replace;
/* Message attributes */
attrs = ®->is_message_attrs;
STR(ENTITY_IDENTIFIER, "blue.pauw.homeunix.net");
/* Operating attributes */
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "blue.pauw.homeunix.net");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.2:33849/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
U32(ESI_PORT, 56288);
STR(ISCSI_NAME, "iqn.2005-03.org.open-iscsi:blue");
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_INITIATOR_MASK);
STR(ISCSI_ALIAS, "blue.pauw.homeunix.net");
isns_simple_print(reg, isns_print_stdout);
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("Unable to register object: %s\n",
isns_strerror(status));
printf("Successfully registered object\n");
// isns_simple_print(reg, isns_print_stdout);
isns_simple_free(reg);
isns_client_destroy(clnt);
if (n == 0) {
printf("Sleeping for %d seconds\n", timeout);
sleep(timeout);
}
}
return 0;
}
/*
* Process an incoming message
*/
isns_message_t *
isns_process_message(isns_server_t *srv, isns_message_t *msg)
{
struct isns_service_ops *ops = srv->is_ops;
uint16_t function = msg->im_header.i_function;
int status = ISNS_SUCCESS;
isns_simple_t *call = NULL, *reply = NULL;
isns_message_t *res_msg = NULL;
isns_db_t *db = srv->is_db;
status = isns_simple_decode(msg, &call);
if (status) {
isns_debug_message("Failed to decode %s request: %s\n",
isns_function_name(msg->im_header.i_function),
isns_strerror(status));
goto reply;
}
isns_simple_print(call, isns_debug_message);
/* Set policy and privileges based on the
* sender's identity. */
if (!(call->is_policy = isns_policy_bind(msg)))
goto err_unauthorized;
if (!isns_policy_validate_function(call->is_policy, msg))
goto err_unauthorized;
/* Checks related to the message source.
* Note - some messages do not use a source.
*/
if (call->is_source) {
/* Validate the message source. This checks whether the client
* is permitted to use this source node name.
* Beware - not all messages include a source.
*/
if (!isns_policy_validate_source(call->is_policy, call->is_source))
goto err_unauthorized;
/* This may fail if the source node isn't in the DB yet. */
isns_source_set_node(call->is_source, db);
/*
* 6.2.6. Registration Period
*
* The registration SHALL be removed from the iSNS database
* if an iSNS Protocol message is not received from the
* iSNS client before the registration period has expired.
* Receipt of any iSNS Protocol message from the iSNS client
* automatically refreshes the Entity Registration Period and
* Entity Registration Timestamp. To prevent a registration
* from expiring, the iSNS client should send an iSNS Protocol
* message to the iSNS server at intervals shorter than the
* registration period. Such a message can be as simple as a
* query for one of its own attributes, using its associated
* iSCSI Name or FC Port Name WWPN as the Source attribute.
*/
/* Thusly, we update the timestamps of all entities
* registered by this source. */
isns_entity_touch(call->is_source->is_entity);
}
/* Handle the requested function. If the function vector is
* NULL, silently discard the message. */
switch (function) {
#define DO(rw, FUNCTION, __function) \
case FUNCTION: \
if (!ops->__function) \
goto no_reply; \
\
if (!isns_begin_##rw##_operation(srv, call, &status)) \
break; \
status = ops->__function(srv, call, &reply); \
isns_end_##rw##_operation(srv, call, &status); \
break
DO(write, ISNS_DEVICE_ATTRIBUTE_REGISTER, process_registration);
DO(read, ISNS_DEVICE_ATTRIBUTE_QUERY, process_query);
DO(read, ISNS_DEVICE_GET_NEXT, process_getnext);
DO(write, ISNS_DEVICE_DEREGISTER, process_deregistration);
DO(write, ISNS_DD_REGISTER, process_dd_registration);
DO(write, ISNS_DD_DEREGISTER, process_dd_deregistration);
DO(read, ISNS_SCN_REGISTER, process_scn_registration);
DO(read, ISNS_SCN_DEREGISTER, process_scn_deregistration);
DO(read, ISNS_SCN_EVENT, process_scn_event);
DO(read, ISNS_STATE_CHANGE_NOTIFICATION, process_scn);
DO(read, ISNS_ENTITY_STATUS_INQUIRY, process_esi);
DO(read, ISNS_HEARTBEAT, process_heartbeat);
#undef DO
default:
isns_error("Function %s not supported\n",
isns_function_name(function));
status = ISNS_MESSAGE_NOT_SUPPORTED;
break;
}
reply:
/* Commit any changes to the DB before we reply */
if (db)
isns_db_sync(db);
/* Send out SCN notifications */
isns_flush_events();
if (reply != NULL) {
reply->is_function |= 0x8000;
isns_simple_print(reply, isns_debug_message);
/* Encode the whole thing */
status = isns_simple_encode_response(reply, msg, &res_msg);
}
/* No reply, or error when encoding it:
* just send the error, nothing else. */
if (res_msg == NULL) {
res_msg = isns_create_reply(msg);
if (status == ISNS_SUCCESS)
status = ISNS_INTERNAL_ERROR;
}
isns_debug_message("response status 0x%04x (%s)\n",
status, isns_strerror(status));
if (status != ISNS_SUCCESS)
isns_message_set_error(res_msg, status);
no_reply:
isns_simple_free(call);
if (reply)
isns_simple_free(reply);
return res_msg;
err_unauthorized:
status = ISNS_SOURCE_UNAUTHORIZED;
goto reply;
}
int
main(int argc, char **argv)
{
const char *opt_configfile = ISNS_DEFAULT_ISNSADM_CONFIG;
isns_client_t *clnt;
isns_attr_list_t *attrs;
isns_simple_t *reg;
isns_portal_info_t portal_info;
uint32_t status;
int opt_replace = 1;
int c;
while ((c = getopt(argc, argv, "c:d:n")) != -1) {
switch (c) {
case 'c':
opt_configfile = optarg;
break;
case 'd':
isns_enable_debugging(optarg);
break;
case 'n':
opt_replace = 0;
break;
default:
isns_fatal("Unknown option\n");
}
}
isns_read_config(opt_configfile);
isns_assign_string(&isns_config.ic_source_name,
"iqn.1991-05.com.microsoft:orange");
clnt = isns_create_default_client(NULL);
/*
* test that we can deregister for SCN events, even though
* not registered
*/
reg = isns_simple_create(ISNS_SCN_DEREGISTER, clnt->ic_source, NULL);
/* Message attributes */
attrs = ®->is_message_attrs;
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_error("SCNDereg failed: %s\n", isns_strerror(status));
else
printf("Successfully deregistered for SCN events\n");
isns_simple_free(reg);
/*
* test that we can deregister a device, even though not
* registered -- note that the portal group object proceeds
* the initiator (name) object in the operating attribute
* list
*/
reg = isns_simple_create(ISNS_DEVICE_DEREGISTER, clnt->ic_source, NULL);
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "troopa.nki.nl");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.40:3229/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevDereg failed: %s\n", isns_strerror(status));
else
printf("Successfully deregistered a device\n");
isns_simple_free(reg);
/*
* test that we can register (w/replace) device attributes
*/
reg = isns_simple_create(ISNS_DEVICE_ATTRIBUTE_REGISTER,
clnt->ic_source, NULL);
reg->is_replace = opt_replace;
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "troopa.nki.nl");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.40:3229/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
U32(SCN_PORT, 3230);
U32(ESI_PORT, 3230);
U32(PG_TAG, 1);
STR(PG_ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_INITIATOR_MASK);
STR(ISCSI_ALIAS, "<MS SW iSCSI Initiator>");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevAttrReg failed: %s\n", isns_strerror(status));
else
printf("Successfully registered device attributes\n");
isns_simple_free(reg);
/*
* test that we can call DEVICE GET NEXT to get the next (only)
* iscsi Storage Node
*/
reg = isns_simple_create(ISNS_DEVICE_GET_NEXT, clnt->ic_source, NULL);
attrs = ®->is_message_attrs;
NIL(ISCSI_NAME);
attrs = ®->is_operating_attrs;
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_INITIATOR_MASK);
NIL(ISCSI_NODE_TYPE);
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevGetNext failed: %s\n", isns_strerror(status));
else
printf("Successfully got next device node\n");
isns_simple_free(reg);
return 0;
}
int
main(int argc, char **argv)
{
const char *opt_configfile = ISNS_DEFAULT_ISNSADM_CONFIG;
isns_client_t *clnt;
isns_attr_list_t *attrs;
isns_simple_t *reg;
isns_portal_info_t portal_info;
uint32_t status;
int opt_replace = 1;
int c;
while ((c = getopt(argc, argv, "c:d:n")) != -1) {
switch (c) {
case 'c':
opt_configfile = optarg;
break;
case 'd':
isns_enable_debugging(optarg);
break;
case 'n':
opt_replace = 0;
break;
default:
isns_fatal("Unknown option\n");
}
}
isns_read_config(opt_configfile);
isns_assign_string(&isns_config.ic_source_name,
"iqn.1991-05.com.microsoft:orange");
clnt = isns_create_default_client(NULL);
reg = isns_simple_create(ISNS_SCN_DEREGISTER, clnt->ic_source, NULL);
/* Message attributes */
attrs = ®->is_message_attrs;
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_error("SCNDereg failed: %s\n", isns_strerror(status));
isns_simple_free(reg);
reg = isns_simple_create(ISNS_DEVICE_DEREGISTER, clnt->ic_source, NULL);
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "troopa.nki.nl");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.40:3229/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevDereg failed: %s\n", isns_strerror(status));
isns_simple_free(reg);
reg = isns_simple_create(ISNS_DEVICE_ATTRIBUTE_REGISTER, clnt->ic_source, NULL);
reg->is_replace = opt_replace;
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "troopa.nki.nl");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.40:3229/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
U32(SCN_PORT, 3230);
U32(ESI_PORT, 3230);
U32(PG_TAG, 1);
STR(PG_ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
STR(ISCSI_NAME, "iqn.1991-05.com.microsoft:orange");
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_INITIATOR_MASK);
STR(ISCSI_ALIAS, "<MS SW iSCSI Initiator>");
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevAttrReg failed: %s\n", isns_strerror(status));
isns_simple_free(reg);
reg = isns_simple_create(ISNS_DEVICE_GET_NEXT, clnt->ic_source, NULL);
attrs = ®->is_message_attrs;
NIL(ISCSI_NAME);
attrs = ®->is_operating_attrs;
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_TARGET_MASK);
NIL(ISCSI_NODE_TYPE);
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("DevGetNext failed: %s\n", isns_strerror(status));
isns_simple_free(reg);
return 0;
}
/*
* Process a deregistration
*
* Normally, you would expect that a deregistration removes the
* object from the database, and that's the end of the story.
* Unfortunately, someone added Discovery Domains to the protocol,
* requiring _some_ information to survive as long as an object
* is referenced by a discovery domain. Specifically, we need to
* retain the relationship between key attributes (eg iscsi node
* name) and the object index.
*
* Thus, deregistration consists of the following steps
* - the object is removed from the database's global scope,
* so that it's no longer visible to DB lookups.
*
* - the object is detached from its containing Network
* Entity.
*
* - all attributes except the key attr(s) and the index
* attribute are removed.
*/
int
isns_process_deregistration(isns_server_t *srv, isns_simple_t *call, isns_simple_t **result)
{
isns_object_list_t objects = ISNS_OBJECT_LIST_INIT;
isns_simple_t *reply = NULL;
isns_db_t *db = srv->is_db;
int status, dereg_status;
unsigned int i;
/* Get the objects to deregister */
status = isns_deregistration_get_objects(call, db, &objects);
if (status != ISNS_SUCCESS)
goto done;
/*
* 5.6.5.4
*
* For messages that change the contents of the iSNS database,
* the iSNS server MUST verify that the Source Attribute
* identifies either a Control Node or a Storage Node that is
* a part of the Network Entity containing the added, deleted,
* or modified objects.
*/
/*
* Implementation note: this can be implemented either by
* explicitly checking the object's owner in isns_db_remove
* (which is what we do right now), or by matching only
* those objects that have the right owner anyway.
*
* The latter sounds like a better choice if the client
* uses NIL attributes, because it limits the scope of
* the operation; but then the RFC doesn't say whether
* this kind of deregistration would be valid at all.
*/
/* Success: create a new simple message, and
* send it in our reply. */
reply = __isns_create_deregistration(srv->is_source, NULL);
if (reply == NULL) {
status = ISNS_INTERNAL_ERROR;
goto done;
}
dereg_status = ISNS_SUCCESS;
for (i = 0; i < objects.iol_count; ++i) {
isns_object_t *obj = objects.iol_data[i];
/* Policy: check that the client is permitted
* to deregister this object */
if (!isns_policy_validate_object_access(call->is_policy,
call->is_source, obj,
call->is_function))
status = ISNS_SOURCE_UNAUTHORIZED;
if (status == ISNS_SUCCESS)
status = isns_db_remove(db, obj);
if (status != ISNS_SUCCESS) {
/*
* 5.7.5.4
*
* In the event of an error, this response message
* contains the appropriate status code as well
* as a list of objects from the original DevDereg
* message that were not successfully deregistered
* from the iSNS database. This list of objects
* is contained in the Operating Attributes
* of the DevDeregRsp message. Note that an
* attempted deregistration of a non-existent
* object does not constitute an isns_error, and
* non-existent entries SHALL not be returned
* in the DevDeregRsp message.
*/
/*
* Implementation: right now this doesn't work
* at all, because isns_msg_set_error will
* discard the entire message except for the
* status word.
*/
isns_debug_message("Failed to deregister object: %s (0x%04x)\n",
isns_strerror(status), status);
isns_object_extract_all(obj, &reply->is_operating_attrs);
dereg_status = status;
continue;
}
/*
* 5.7.5.4
* If all Nodes and Portals associated with a Network
* Entity are deregistered, then the Network Entity
* SHALL also be removed.
* [...]
* If both the Portal and iSCSI Storage Node objects
* associated with a Portal Group object are removed,
* then that Portal Group object SHALL also be removed.
* The Portal Group object SHALL remain registered
* as long as either of its associated Portal or
* iSCSI Storage Node objects remain registered. If a
* deleted Storage Node or Portal object is subsequently
* re-registered, then a relationship between the re-
* registered object and an existing Portal or Storage
* Node object registration, indicated by the PG object,
* SHALL be restored.
*/
/* isns_db_remove takes care of removing dead entities,
* and dead portal groups.
*/
}
if (status == ISNS_SUCCESS)
status = dereg_status;
done:
isns_object_list_destroy(&objects);
*result = reply;
return status;
}
