/*
* isns_init() needs to be call before all ISNS operations.
* Save the isns_server & entity name.
* Start esi_scn_thr to receive ESI & SCN messages
*/
int
isns_init(target_queue_t *q)
{
char *entity = NULL;
if (q != NULL)
mgmtq = q;
if (isns_enabled() == False)
return (0);
/*
* get entity from the configuration if it set, alternatively
* get local hostname for entity usage. If environment variable
* ISCSITGT_ISNS_ENTITY is set it overrides all the other means
* of entity definition
*/
if (tgt_find_value_str(main_config, XML_ELEMENT_ISNS_ENTITY, &entity)) {
(void) strlcpy(isns_args.entity, entity, MAXHOSTNAMELEN + 1);
free(entity);
} else {
(void) gethostname(isns_args.entity, MAXHOSTNAMELEN);
}
/* Try environment variable - it overrides everything else */
entity = getenv(ISCSITGT_ISNS_ENTITY);
if (entity != NULL) {
(void) strlcpy(isns_args.entity, entity, MAXHOSTNAMELEN + 1);
}
if ((strlen(isns_args.entity) == 0) ||
(get_ip_addr(isns_args.entity, &eid_ip) < 0)) {
syslog(LOG_ERR, "isns_init: failed to get host name or host ip"
" address for ENTITY properties");
return (-1);
}
isns_shutdown = False;
(void) isns_populate_and_update_server_info(False);
if (pthread_create(&scn_tid, NULL,
esi_scn_thr, (void *)&isns_args) !=
0) {
syslog(LOG_ALERT, "isns_init failed to pthread_create");
(void) pthread_kill(isns_tid, SIGKILL);
return (-1);
}
if (pthread_create(&isns_tid, NULL, isns_server_connection_thr,
(void *)NULL) != 0) {
syslog(LOG_ALERT,
"isns_init failed to create the "
"isns connection thr");
return (-1);
}
isns_server_connection_thr_running = True;
return (0);
}
/*
* This thread sit's in a loop and ensures that it keeps checking for
* connection to isns_server. Once the connection works it registers
* with the isns and bails out.
* We expect the isns server to be fault taulerant and has persistence
* for the registered entries.
*/
static void *
isns_server_connection_thr(void *arg)
{
Boolean_t registered_targets = False;
char server[MAXHOSTNAMELEN + 1] = {0};
while (isns_shutdown == False &&
connection_thr_bail_out == False) {
/* current server */
(void) strcpy(server, isns_args.server);
if (is_isns_server_up(server) == 0) {
if (registered_targets == False) {
/*
* register all targets, what happens if
* no targets are created yet? this should
* not be a failure, when new target gets
* created, update gets call. what if SCN
* register fails?
*/
if (isns_reg_all() == 0) {
/* scn register all targets */
if (isns_op_all(ISNS_SCN_REG) != 0) {
syslog(LOG_ERR,
"SCN registrations"
" failed\n");
(void) isns_op_all(
ISNS_DEV_DEREG);
registered_targets = False;
} else {
registered_targets = True;
break;
}
}
}
} else {
syslog(LOG_INFO,
"isns server %s is not reachable",
server);
registered_targets = False;
}
(void) sleep(ISNS_SLEEP_SECS);
/* If isns was disabled, deregister and close the thread */
if (isns_enabled() == False) {
syslog(LOG_INFO,
"isns server is disabled, dergister target");
isns_fini();
break;
}
}
queue_message_set(mgmtq, 0, msg_pthread_join,
(void *)(uintptr_t)pthread_self());
return (NULL);
}
/*
* isns_update gets call on modify_admin, this is changes to
* isns access and/or isns server
*/
int
isns_update()
{
Boolean_t is_isns_enabled = isns_enabled();
/*
* If the isns thread was not started before and we are going
* enabled from disabled start the threads.
*/
if (isns_server_connection_thr_running == False) {
if (is_isns_enabled == True) {
if (isns_init(NULL) != 0) {
return (-1);
} else {
return (0);
}
} else {
syslog(LOG_INFO,
"isns_update: isns is disabled");
}
} else {
/*
* isns is disabled after enabled,
* log off all targets and fini isns service
*/
if (is_isns_enabled == False) {
isns_shutdown = True;
/* pthread_join for the isns thread */
(void) pthread_join(isns_tid, NULL);
(void) pthread_join(scn_tid, NULL);
isns_server_connection_thr_running = False;
} else {
/*
* Incase the original thread is still running
* we should reap it
*/
connection_thr_bail_out = True;
(void) pthread_join(isns_tid, NULL);
connection_thr_bail_out = False;
/*
* Read the configuration file incase the server
* has changed.
*/
if (isns_populate_and_update_server_info(True) == -1) {
return (-1);
}
}
}
return (0);
}
/*
* []----
* | validate_isns_server -- validate that server[:port] are valid
* []----
*/
char *
valid_isns_srv(char *name, char *prop)
{
char *msg = NULL;
char *sp, *p;
int so;
int port;
if (strlen(prop) > MAXHOSTNAMELEN) {
xml_rtn_msg(&msg, ERR_INVALID_ISNS_SRV);
return (msg);
}
if ((sp = strdup(prop)) == NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
return (msg);
}
if ((p = strrchr(sp, ':')) != NULL) {
*p++ = '\0';
port = atoi(p);
if ((port < 1) || (port > 65535)) {
xml_rtn_msg(&msg, ERR_INVALID_ISNS_SRV);
free(sp);
return (msg);
}
}
so = isns_open(sp);
if (so < 0) {
if (isns_enabled() == True) {
xml_rtn_msg(&msg, ERR_INVALID_ISNS_SRV);
} else { /* Just print a warning and accept the server */
syslog(LOG_ALERT,
"Check if the server:%s is valid", sp);
}
} else {
isns_close(so);
}
free(sp);
return (msg);
}
/*
* remove_zfs -- unshare a ZVOL from the target
*/
static char *
remove_zfs(tgt_node_t *x, ucred_t *cred)
{
char *prop;
char *msg = NULL;
tgt_node_t *targ = NULL;
libzfs_handle_t *zh = NULL;
const priv_set_t *eset;
if (tgt_find_value_str(x, XML_ELEMENT_NAME, &prop) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_NAME);
return (msg);
}
if ((zh = libzfs_init()) == NULL) {
xml_rtn_msg(&msg, ERR_INTERNAL_ERROR);
free(prop);
return (msg);
}
eset = ucred_getprivset(cred, PRIV_EFFECTIVE);
if (eset != NULL ? !priv_ismember(eset, PRIV_SYS_CONFIG) :
ucred_geteuid(cred) != 0) {
/*
* See if user has ZFS dataset permissions to do operation
*/
if (zfs_iscsi_perm_check(zh, prop, cred) != 0) {
xml_rtn_msg(&msg, ERR_NO_PERMISSION);
free(prop);
libzfs_fini(zh);
return (msg);
}
}
libzfs_fini(zh);
while ((targ = tgt_node_next(targets_config, XML_ELEMENT_TARG, targ))
!= NULL) {
if (strcmp(targ->x_value, prop) == 0)
break;
}
free(prop);
if (targ == NULL) {
/*
* We're unsharing a target. If we don't have a reference
* then there's no problem.
*/
xml_rtn_msg(&msg, ERR_SUCCESS);
return (msg);
}
if (tgt_find_value_str(targ, XML_ELEMENT_INAME, &prop) ==
False) {
xml_rtn_msg(&msg, ERR_TARGCFG_MISSING_INAME);
return (msg);
}
tgt_node_remove(targets_config, targ, MatchBoth);
/*
* Wait until here to issue a logout to any initiators that
* might be logged into the target. Certain initiators are
* sneaky in that if asked to logout they will, but turn right
* around and log back into the target. By waiting until here
* to issue the logout we'll have removed reference to the target
* such that this can't happen.
*/
if (isns_enabled() == True) {
if (isns_dereg(prop) != 0)
syslog(LOG_INFO, "ISNS dereg failed\n");
}
logout_targ(prop);
free(prop);
xml_rtn_msg(&msg, ERR_SUCCESS);
return (msg);
}
static char *
remove_tpgt(tgt_node_t *x)
{
char *msg = NULL;
char *prop = NULL;
tgt_node_t *node = NULL;
tgt_node_t *c = NULL;
Boolean_t change_made = False;
if (tgt_find_value_str(x, XML_ELEMENT_NAME, &prop) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_NAME);
return (msg);
}
while ((node = tgt_node_next(main_config, XML_ELEMENT_TPGT, node)) !=
NULL) {
if (strcmp(node->x_value, prop) == 0)
break;
}
free(prop);
if (node == NULL) {
xml_rtn_msg(&msg, ERR_TPGT_NOT_FOUND);
return (msg);
}
if (tgt_find_value_str(x, XML_ELEMENT_IPADDR, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_IPADDR);
return (msg);
}
c = tgt_node_alloc(XML_ELEMENT_IPADDR, String, prop);
if (tgt_node_remove(node, c, MatchBoth) == False) {
xml_rtn_msg(&msg, ERR_INVALID_IP);
goto error;
}
tgt_node_free(c);
free(prop);
change_made = True;
}
if ((change_made != True) &&
(tgt_find_value_str(x, XML_ELEMENT_ALL, &prop) == True)) {
tgt_node_remove(main_config, node, MatchBoth);
change_made = True;
}
if (change_made == True) {
/* Isns re-register all target */
if (isns_enabled() == True)
isns_reg_all();
if (mgmt_config_save2scf() == True)
xml_rtn_msg(&msg, ERR_SUCCESS);
} else {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_OPERAND);
}
return (msg);
error:
if (c != NULL)
tgt_node_free(c);
if (prop != NULL)
free(prop);
return (msg);
}
static char *
remove_target(tgt_node_t *x)
{
char *msg = NULL;
char *prop = NULL;
tgt_node_t *targ = NULL;
tgt_node_t *list;
tgt_node_t *c = NULL;
Boolean_t change_made = False;
int lun_num;
if (tgt_find_value_str(x, XML_ELEMENT_NAME, &prop) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_NAME);
return (msg);
}
while ((targ = tgt_node_next(targets_config, XML_ELEMENT_TARG, targ)) !=
NULL) {
if (strcmp(targ->x_value, prop) == 0)
break;
}
free(prop);
if (targ == NULL) {
xml_rtn_msg(&msg, ERR_TARG_NOT_FOUND);
return (msg);
}
if (tgt_find_value_str(x, XML_ELEMENT_ACL, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_ACL);
return (msg);
}
if ((list = tgt_node_next(targ, XML_ELEMENT_ACLLIST, NULL)) ==
NULL) {
free(prop);
xml_rtn_msg(&msg, ERR_ACL_NOT_FOUND);
return (msg);
}
c = tgt_node_alloc(XML_ELEMENT_ACLINIT, String, prop);
if (tgt_node_remove(list, c, MatchBoth) == False) {
xml_rtn_msg(&msg, ERR_INIT_NOT_FOUND);
goto error;
}
tgt_node_free(c);
if (list->x_child == NULL)
(void) tgt_node_remove(targ, list, MatchName);
free(prop);
change_made = True;
}
if (tgt_find_value_str(x, XML_ELEMENT_TPGT, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_TPGT);
return (msg);
}
if ((list = tgt_node_next(targ, XML_ELEMENT_TPGTLIST, NULL)) ==
NULL) {
free(prop);
xml_rtn_msg(&msg, ERR_ACL_NOT_FOUND);
return (msg);
}
c = tgt_node_alloc(XML_ELEMENT_TPGT, String, prop);
if (tgt_node_remove(list, c, MatchBoth) == False) {
xml_rtn_msg(&msg, ERR_TPGT_NOT_FOUND);
goto error;
}
tgt_node_free(c);
if (list->x_child == NULL)
(void) tgt_node_remove(targ, list, MatchName);
free(prop);
/* update isns */
if (isns_enabled()) {
if (isns_dev_update(targ->x_value, ISNS_MOD_TPGT) != 0)
syslog(LOG_ALERT, "ISNS register failed\n");
}
change_made = True;
}
if (tgt_find_value_int(x, XML_ELEMENT_LUN, &lun_num) == True) {
if (tgt_find_value_intchk(x, XML_ELEMENT_LUN, &lun_num) ==
False) {
xml_rtn_msg(&msg, ERR_LUN_INVALID_RANGE);
return (msg);
}
/*
* Save the iscsi-name which we'll need to remove LUNs.
*/
if (tgt_find_value_str(targ, XML_ELEMENT_INAME, &prop) ==
False) {
xml_rtn_msg(&msg, ERR_TARGCFG_MISSING_INAME);
return (msg);
}
logout_targ(prop);
thick_provo_stop(prop, lun_num);
remove_target_common(targ->x_value, lun_num, &msg);
if (msg != NULL)
goto error;
/* ISNS de-register target if it's the last lun */
if (lun_num == 0 && isns_enabled() == True) {
if (isns_dereg(prop) != 0)
syslog(LOG_INFO, "ISNS dereg failed\n");
}
iscsi_inventory_change(prop);
free(prop);
change_made = True;
}
if (change_made == True) {
if (mgmt_config_save2scf() == True)
xml_rtn_msg(&msg, ERR_SUCCESS);
} else {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_OPERAND);
}
return (msg);
error:
if (c != NULL)
tgt_node_free(c);
if (prop != NULL)
free(prop);
return (msg);
}
/*
* []----
* | check_access -- see if the requesting initiator is in the ACL
* |
* | Optionally will also check to see if this initiator requires
* | authentication.
* []----
*/
Boolean_t
check_access(tgt_node_t *targ, char *initiator_name, Boolean_t req_chap)
{
tgt_node_t *acl;
tgt_node_t *inode = NULL;
tgt_node_t *tgt_initiator = NULL;
char *dummy;
Boolean_t valid = False;
Boolean_t found_chap = False;
Boolean_t access = False;
/*
* If ISNS is enable check for access privilege from isns server
*/
if (isns_enabled() == True) {
if (tgt_find_value_str(targ, XML_ELEMENT_INAME, &dummy)
== False) {
return (False);
}
access = isns_qry_initiator(dummy, initiator_name);
free(dummy);
if (req_chap == False) {
return (access);
}
/* Need to check if CHAP is needed for initiator */
while ((inode = tgt_node_next_child(main_config,
XML_ELEMENT_INIT, inode)) != NULL) {
if (tgt_find_value_str(inode, XML_ELEMENT_INAME, &dummy)
== True) {
if (strcmp(dummy, initiator_name) == 0) {
free(dummy);
if (tgt_find_value_str(inode,
XML_ELEMENT_CHAPSECRET, &dummy)
== True) {
free(dummy);
found_chap = True;
break;
}
}
}
}
if (access == True) {
if ((req_chap == True) && (found_chap == True))
access = False;
}
return (access);
}
/*
* If there's no ACL for this target everyone has access.
*/
if ((acl = tgt_node_next(targ, XML_ELEMENT_ACLLIST, NULL)) == NULL)
return (True);
/*
* Find the local initiator name and also save the knowledge
* if the initiator had a CHAP secret.
*/
inode = NULL;
while ((inode = tgt_node_next_child(main_config, XML_ELEMENT_INIT,
inode)) != NULL) {
if (tgt_find_value_str(inode, XML_ELEMENT_INAME, &dummy) ==
True) {
if (strcmp(dummy, initiator_name) == 0) {
free(dummy);
if (tgt_find_value_str(inode,
XML_ELEMENT_CHAPSECRET, &dummy) == True) {
free(dummy);
found_chap = True;
}
break;
} else {
free(dummy);
}
}
}
if ((acl != NULL) && (inode == NULL))
return (False);
while ((tgt_initiator = tgt_node_next(acl, XML_ELEMENT_INIT,
tgt_initiator)) != NULL) {
if (strcmp(inode->x_value, tgt_initiator->x_value) == 0) {
valid = True;
break;
}
}
if (valid == True) {
/*
* If req_chap is True it means the login code hasn't gone
* through the authentication phase and it's trying to
* determine if the initiator should have done so. If
* we find a CHAP-secret then this routine will fail.
* No CHAP-secret for an initiator just means that a
* simple ACL list is used. This can be spoofed easily
* enough and is mainly used to limit the number of
* targets an initiator would see.
*/
if ((req_chap == True) && (found_chap == True))
valid = False;
}
return (valid);
}
/*
* []----
* | modify_tpgt -- add an IP-address to a target portal group
* []----
*/
static char *
modify_tpgt(tgt_node_t *x)
{
struct addrinfo *res = NULL;
char *msg = NULL;
char *name = NULL;
char *ip_str = NULL;
tgt_node_t *tnode = NULL;
tgt_node_t *list = NULL;
(void) pthread_rwlock_wrlock(&targ_config_mutex);
if (tgt_find_value_str(x, XML_ELEMENT_NAME, &name) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_NAME);
goto error;
}
if (tgt_find_value_str(x, XML_ELEMENT_IPADDR, &ip_str) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_IPADDR);
goto error;
}
if ((getaddrinfo(ip_str, NULL, NULL, &res) != 0) || (res == NULL)) {
xml_rtn_msg(&msg, ERR_INVALID_IP);
goto error;
}
while ((tnode = tgt_node_next_child(main_config, XML_ELEMENT_TPGT,
tnode)) != NULL) {
if (strcmp(tnode->x_value, name) == 0)
break;
}
if (tnode == NULL) {
xml_rtn_msg(&msg, ERR_TPGT_NOT_FOUND);
goto error;
}
if ((list = tgt_node_next(tnode, XML_ELEMENT_IPADDRLIST, NULL))
== NULL) {
list = tgt_node_alloc(XML_ELEMENT_IPADDRLIST, String, "");
if (list == NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
tgt_node_add(tnode, list);
}
if (modify_element(XML_ELEMENT_IPADDR, ip_str, list, MatchBoth) ==
False) {
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
if (mgmt_config_save2scf() == True) {
xml_rtn_msg(&msg, ERR_SUCCESS);
} else {
/* tpgt change should be updated to smf */
xml_rtn_msg(&msg, ERR_INTERNAL_ERROR);
}
/*
* Re-register all targets, currently there's no method to
* update TPGT for individual target
*/
if (isns_enabled() == True) {
(void) isns_reg_all();
}
error:
if (name)
free(name);
if (ip_str)
free(ip_str);
if (res)
freeaddrinfo(res);
(void) pthread_rwlock_unlock(&targ_config_mutex);
return (msg);
}
/*
* []----
* | modify_target -- updates one or more properties for a target
* []----
*/
static char *
modify_target(tgt_node_t *x, ucred_t *cred)
{
char *msg = NULL;
char *name = NULL;
char iscsi_path[MAXPATHLEN];
char targ_name[64];
char *iscsi = NULL;
char *prop = NULL;
char path[MAXPATHLEN];
char *m;
char buf[512]; /* one sector size block */
tgt_node_t *t = NULL;
tgt_node_t *list = NULL;
tgt_node_t *c = NULL;
tgt_node_t *node = NULL;
tgt_node_t *tpgt = NULL;
Boolean_t change_made = False;
int lun = 0;
int fd;
uint64_t val, new_lu_size, cur_lu_size;
struct stat st;
uint32_t isns_mods = 0;
(void) pthread_rwlock_wrlock(&targ_config_mutex);
if (tgt_find_value_str(x, XML_ELEMENT_NAME, &name) == False) {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_NAME);
goto error;
}
while ((t = tgt_node_next_child(targets_config, XML_ELEMENT_TARG,
t)) != NULL) {
if (strcmp(t->x_value, name) == 0) {
break;
}
}
if (t == NULL) {
free(name);
xml_rtn_msg(&msg, ERR_TARG_NOT_FOUND);
goto error;
}
if (tgt_find_attr_str(t, XML_ELEMENT_INCORE, &m) == True) {
if (strcmp(m, "true") == 0) {
free(m);
free(name);
(void) pthread_rwlock_unlock(&targ_config_mutex);
return (modify_zfs(x, cred));
}
free(m);
}
/*
* Under base dir, file 'target name' is a symbolic link
* to the real directory 'IQN name' which stores params and back
* storage. Therefore we can easily get IQN name from target
* name by read the symbolic link content.
*/
(void) snprintf(path, sizeof (path), "%s/%s", target_basedir, name);
bzero(iscsi_path, sizeof (iscsi_path));
(void) readlink(path, iscsi_path, sizeof (iscsi_path));
iscsi = basename(iscsi_path);
/* ---- Finished with these so go ahead and release the memory ---- */
(void) strncpy(targ_name, name, sizeof (targ_name));
free(name);
/*
* Grow the LU. We currently do not support shrinking the LU and
* that is only because it's unknown if any applications could support
* that type of data loss. To support shrinking all that would be
* needed is to remove the new/old size check and perform a truncation.
* The actually truncation request should be shipped off to the T10
* layer so that the LU thread can remap the smaller size without
* anyone accessing the data.
*/
if (tgt_find_value_str(x, XML_ELEMENT_SIZE, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_TPGT);
goto error;
}
if (strtoll_multiplier(prop, &new_lu_size) == False) {
free(prop);
xml_rtn_msg(&msg, ERR_INVALID_SIZE);
goto error;
}
free(prop);
if ((new_lu_size % 512LL) != 0) {
xml_rtn_msg(&msg, ERR_SIZE_MOD_BLOCK);
goto error;
}
new_lu_size /= 512LL;
/* ---- default to LUN 0 ---- */
(void) tgt_find_value_int(x, XML_ELEMENT_LUN, &lun);
/* ---- read in current parameters ---- */
if (mgmt_get_param(&node, targ_name, lun) == False) {
xml_rtn_msg(&msg, ERR_OPEN_PARAM_FILE_FAILED);
goto error;
}
/* ---- validate that we're indeed growing the LU ---- */
if (tgt_find_value_str(node, XML_ELEMENT_SIZE, &prop) ==
False) {
xml_rtn_msg(&msg, ERR_INIT_XML_READER_FAILED);
goto error;
}
if (strtoll_multiplier(prop, &cur_lu_size) == False) {
free(prop);
xml_rtn_msg(&msg, ERR_INVALID_SIZE);
goto error;
}
free(prop);
if (new_lu_size < cur_lu_size) {
xml_rtn_msg(&msg, ERR_CANT_SHRINK_LU);
goto error;
}
/* ---- check that this LU is of type 'disk' or 'tape' ---- */
if (tgt_find_value_str(node, XML_ELEMENT_DTYPE, &prop) ==
False) {
xml_rtn_msg(&msg, ERR_INIT_XML_READER_FAILED);
goto error;
}
if ((strcmp(prop, TGT_TYPE_DISK) != 0) &&
(strcmp(prop, TGT_TYPE_TAPE) != 0)) {
xml_rtn_msg(&msg, ERR_RESIZE_WRONG_DTYPE);
free(prop);
goto error;
}
free(prop);
/* ---- validate the backing store is a regular file ---- */
(void) snprintf(path, sizeof (path), "%s/%s/%s%d",
target_basedir, iscsi, LUNBASE, lun);
if (stat(path, &st) == -1) {
xml_rtn_msg(&msg, ERR_STAT_BACKING_FAILED);
goto error;
}
if ((st.st_mode & S_IFMT) != S_IFREG) {
xml_rtn_msg(&msg,
ERR_DISK_BACKING_MUST_BE_REGULAR_FILE);
goto error;
}
/* ---- update the parameter node with new size ---- */
if ((c = tgt_node_alloc(XML_ELEMENT_SIZE, Uint64, &new_lu_size))
== NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
tgt_node_replace(node, c, MatchName);
tgt_node_free(c);
/* ---- now update params file ---- */
(void) mgmt_param_save2scf(node, targ_name, lun);
/* ---- grow lu backing store ---- */
(void) snprintf(path, sizeof (path), "%s/%s/%s%d",
target_basedir, iscsi, LUNBASE, lun);
if ((fd = open(path, O_RDWR|O_CREAT|O_LARGEFILE, 0600)) < 0) {
xml_rtn_msg(&msg, ERR_LUN_NOT_FOUND);
goto error;
}
(void) lseek(fd, (new_lu_size * 512LL) - 512LL, 0);
bzero(buf, sizeof (buf));
if (write(fd, buf, sizeof (buf)) != sizeof (buf)) {
xml_rtn_msg(&msg, ERR_LUN_NOT_GROWN);
(void) close(fd);
goto error;
}
(void) close(fd);
/* ---- send updates to current initiators via ASC/ASCQ ---- */
iscsi_capacity_change(iscsi, lun);
prop = NULL;
tgt_node_free(node);
node = NULL;
change_made = True;
}
if (tgt_find_value_str(x, XML_ELEMENT_TPGT, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_TPGT);
goto error;
}
/*
* Validate that the Target Portal Group Tag is reasonable.
*/
val = strtoll(prop, &m, 0);
if ((val < TPGT_MIN) || (val > TPGT_MAX) ||
((m != NULL) && (*m != '\0'))) {
xml_rtn_msg(&msg, ERR_INVALID_TPGT);
free(prop);
goto error;
}
/* update isns only if TPGT contains ip_addr */
tpgt = NULL;
while ((tpgt = tgt_node_next_child(main_config,
XML_ELEMENT_TPGT, tpgt)) != NULL) {
if (strcmp(prop, tpgt->x_value) != 0)
continue;
if (tgt_node_next(tpgt, XML_ELEMENT_IPADDR, NULL)
!= NULL) {
isns_mods |= ISNS_MOD_TPGT;
break;
} else {
xml_rtn_msg(&msg, ERR_TPGT_NO_IPADDR);
free(prop);
goto error;
}
}
if ((c = tgt_node_alloc(XML_ELEMENT_TPGT, String, prop)) ==
NULL) {
free(prop);
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
if ((list = tgt_node_next(t, XML_ELEMENT_TPGTLIST,
NULL)) != NULL) {
tgt_node_replace(list, c, MatchBoth);
/*
* tgt_node_replace will duplicate the child node
* tgt_node_add which is used below just links it
* into the tree.
*/
tgt_node_free(c);
} else {
list = tgt_node_alloc(XML_ELEMENT_TPGTLIST, String, "");
if (list == NULL) {
free(prop);
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
tgt_node_add(list, c);
tgt_node_add(t, list);
}
free(prop);
prop = NULL;
change_made = True;
}
if (tgt_find_value_str(x, XML_ELEMENT_ACL, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_ACL);
goto error;
}
c = tgt_node_alloc(XML_ELEMENT_INIT, String, prop);
if (c == NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
free(prop);
goto error;
}
if ((list = tgt_node_next(t, XML_ELEMENT_ACLLIST,
NULL)) != NULL) {
tgt_node_replace(list, c, MatchBoth);
/* ---- See above usage ---- */
tgt_node_free(c);
} else {
list = tgt_node_alloc(XML_ELEMENT_ACLLIST, String, "");
if (list == NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
free(prop);
goto error;
}
tgt_node_add(list, c);
tgt_node_add(t, list);
}
free(prop);
prop = NULL;
change_made = True;
}
if (tgt_find_value_str(x, XML_ELEMENT_ALIAS, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_ALIAS);
goto error;
}
if (modify_element(XML_ELEMENT_ALIAS, prop, t, MatchName) ==
False) {
xml_rtn_msg(&msg, ERR_NO_MEM);
free(prop);
goto error;
}
free(prop);
prop = NULL;
isns_mods |= ISNS_MOD_ALIAS;
change_made = True;
}
if (tgt_find_value_str(x, XML_ELEMENT_MAXRECV, &prop) == True) {
if (prop == NULL) {
xml_rtn_msg(&msg, ERR_SYNTAX_EMPTY_MAXRECV);
goto error;
}
if ((strtoll_multiplier(prop, &val) == False) ||
(val < MAXRCVDATA_MIN) || (val > MAXRCVDATA_MAX)) {
free(prop);
xml_rtn_msg(&msg, ERR_INVALID_MAXRECV);
goto error;
}
free(prop);
if ((prop = malloc(32)) == NULL) {
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
(void) snprintf(prop, 32, "%d", val);
if (modify_element(XML_ELEMENT_MAXRECV, prop, t, MatchName) ==
False) {
free(prop);
xml_rtn_msg(&msg, ERR_NO_MEM);
goto error;
}
free(prop);
prop = NULL;
change_made = True;
}
if (change_made == True) {
if (mgmt_config_save2scf() == False) {
xml_rtn_msg(&msg, ERR_UPDATE_TARGCFG_FAILED);
goto error;
}
if (isns_enabled() == True) {
if (isns_dev_update(t->x_value, isns_mods) != 0) {
xml_rtn_msg(&msg, ERR_ISNS_ERROR);
goto error;
}
}
xml_rtn_msg(&msg, ERR_SUCCESS);
} else {
xml_rtn_msg(&msg, ERR_SYNTAX_MISSING_OPERAND);
}
error:
(void) pthread_rwlock_unlock(&targ_config_mutex);
if (node)
tgt_node_free(node);
return (msg);
}
/*
* esi_scn_thr() is the thread creates an end point to receive and process
* ESI & SCN messages. This thread is created when isns_access is enabled
* and for the duration of the iscsi daemon
*/
static void *
esi_scn_thr(void *arg)
{
struct sockaddr sa, *ai;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
int so, fd, pf;
socklen_t len;
char strport[NI_MAXSERV];
isns_pdu_t *scn = NULL;
struct timeval timeout;
fd_set fdset;
int socket_ready = 0;
pf = get_addr_family(isns_args.entity);
if (pf == PF_INET) {
bzero(&sin, sizeof (sin));
sin.sin_family = PF_INET;
sin.sin_port = htons(0);
sin.sin_addr.s_addr = INADDR_ANY;
ai = (struct sockaddr *)&sin;
len = sizeof (sin);
} else if (pf == PF_INET6) {
bzero(&sin6, sizeof (sin6));
sin6.sin6_family = PF_INET6;
sin6.sin6_port = htons(0);
sin6.sin6_addr = in6addr_any;
ai = (struct sockaddr *)&sin6;
len = sizeof (sin6);
} else {
syslog(LOG_ERR, "Bad address family. Exit esi_scn_thr");
return (NULL);
}
/*
* create and bind SCN socket
* save the scn port info
*/
if ((so = socket(pf, SOCK_STREAM, 0)) == -1) {
syslog(LOG_ALERT, "create isns socket failed");
return (NULL);
}
(void) setsockopt(so, SOL_SOCKET, SO_REUSEADDR, 0, 0);
if (bind(so, ai, len) < 0) {
syslog(LOG_ALERT, "esi_scn_thr: bind failed");
(void) close(so);
return (NULL);
}
/* get scn port info */
len = sizeof (sa);
if (getsockname(so, &sa, &len) < 0) {
syslog(LOG_ALERT, "isns getsockname failed");
(void) close(so);
return (NULL);
}
if (getnameinfo(&sa, len, NULL, 0, strport, NI_MAXSERV,
NI_NUMERICSERV) != 0) {
syslog(LOG_ALERT, "isns getnameinfo failed");
(void) close(so);
return (NULL);
}
scn_port = atoi(strport);
if (listen(so, 5) < 0) {
syslog(LOG_ALERT, "esi_scn_thr: failed listen");
(void) close(so);
return (NULL);
}
/* listen for esi or scn messages */
while (isns_shutdown == False) {
/* ISNS_ESI_INTERVAL_ATTR_ID is set to 10s */
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fdset);
FD_SET(so, &fdset);
socket_ready = select(so + 1, &fdset, NULL, NULL, &timeout);
/* If disabled bail out, dont care about packets */
if (isns_enabled() == False) {
syslog(LOG_INFO,
"isns server is disabled, dergister target");
isns_fini();
(void) close(so);
return (NULL);
}
if (socket_ready < 0) {
syslog(LOG_ERR,
"esi_scn_thr: select failed, retrying.");
continue;
} else if (socket_ready == 0) { /* timeout */
continue;
} else {
/* Socket is ready */
if ((fd = accept(so, &sa, &len)) < 0) {
syslog(LOG_ALERT, "esi_scn_thr: failed accept");
continue;
}
}
if (isns_recv(fd, (isns_rsp_t **)&scn) == 0) {
/* Just return success for ESI */
switch (scn->func_id) {
case ISNS_ESI:
process_esi(fd, scn);
break;
case ISNS_SCN:
/* call the SCN process function */
process_scn(fd, scn);
break;
default:
syslog(LOG_ERR,
"esi_scn_thr: Invalid funcid %d\n",
scn->func_id);
break;
}
/* free response resource */
isns_free_pdu(scn);
} else {
syslog(LOG_ALERT, "esi_scn_thr fails isns_recv ");
}
(void) close(fd);
}
(void) close(so);
return (NULL);
}
