2609 lines
61 KiB
C
2609 lines
61 KiB
C
/*-
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* Copyright (c) 2012 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <netdb.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ctld.h"
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#include "isns.h"
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bool proxy_mode = false;
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static volatile bool sighup_received = false;
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static volatile bool sigterm_received = false;
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static volatile bool sigalrm_received = false;
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static int nchildren = 0;
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static uint16_t last_portal_group_tag = 0xff;
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static void
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usage(void)
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{
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fprintf(stderr, "usage: ctld [-d][-f config-file]\n");
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exit(1);
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}
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char *
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checked_strdup(const char *s)
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{
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char *c;
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c = strdup(s);
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if (c == NULL)
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log_err(1, "strdup");
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return (c);
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}
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struct conf *
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conf_new(void)
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{
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struct conf *conf;
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conf = calloc(1, sizeof(*conf));
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if (conf == NULL)
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log_err(1, "calloc");
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TAILQ_INIT(&conf->conf_luns);
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TAILQ_INIT(&conf->conf_targets);
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TAILQ_INIT(&conf->conf_auth_groups);
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TAILQ_INIT(&conf->conf_ports);
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TAILQ_INIT(&conf->conf_portal_groups);
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TAILQ_INIT(&conf->conf_pports);
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TAILQ_INIT(&conf->conf_isns);
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conf->conf_isns_period = 900;
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conf->conf_isns_timeout = 5;
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conf->conf_debug = 0;
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conf->conf_timeout = 60;
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conf->conf_maxproc = 30;
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return (conf);
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}
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void
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conf_delete(struct conf *conf)
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{
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struct lun *lun, *ltmp;
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struct target *targ, *tmp;
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struct auth_group *ag, *cagtmp;
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struct portal_group *pg, *cpgtmp;
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struct pport *pp, *pptmp;
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struct isns *is, *istmp;
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assert(conf->conf_pidfh == NULL);
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TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp)
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lun_delete(lun);
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TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp)
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target_delete(targ);
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TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp)
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auth_group_delete(ag);
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TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp)
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portal_group_delete(pg);
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TAILQ_FOREACH_SAFE(pp, &conf->conf_pports, pp_next, pptmp)
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pport_delete(pp);
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TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp)
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isns_delete(is);
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assert(TAILQ_EMPTY(&conf->conf_ports));
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free(conf->conf_pidfile_path);
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free(conf);
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}
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static struct auth *
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auth_new(struct auth_group *ag)
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{
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struct auth *auth;
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auth = calloc(1, sizeof(*auth));
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if (auth == NULL)
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log_err(1, "calloc");
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auth->a_auth_group = ag;
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TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next);
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return (auth);
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}
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static void
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auth_delete(struct auth *auth)
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{
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TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next);
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free(auth->a_user);
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free(auth->a_secret);
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free(auth->a_mutual_user);
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free(auth->a_mutual_secret);
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free(auth);
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}
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const struct auth *
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auth_find(const struct auth_group *ag, const char *user)
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{
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const struct auth *auth;
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TAILQ_FOREACH(auth, &ag->ag_auths, a_next) {
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if (strcmp(auth->a_user, user) == 0)
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return (auth);
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}
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return (NULL);
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}
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static void
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auth_check_secret_length(struct auth *auth)
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{
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size_t len;
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len = strlen(auth->a_secret);
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if (len > 16) {
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if (auth->a_auth_group->ag_name != NULL)
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log_warnx("secret for user \"%s\", auth-group \"%s\", "
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"is too long; it should be at most 16 characters "
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"long", auth->a_user, auth->a_auth_group->ag_name);
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else
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log_warnx("secret for user \"%s\", target \"%s\", "
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"is too long; it should be at most 16 characters "
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"long", auth->a_user,
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auth->a_auth_group->ag_target->t_name);
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}
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if (len < 12) {
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if (auth->a_auth_group->ag_name != NULL)
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log_warnx("secret for user \"%s\", auth-group \"%s\", "
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"is too short; it should be at least 12 characters "
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"long", auth->a_user,
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auth->a_auth_group->ag_name);
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else
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log_warnx("secret for user \"%s\", target \"%s\", "
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"is too short; it should be at least 16 characters "
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"long", auth->a_user,
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auth->a_auth_group->ag_target->t_name);
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}
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if (auth->a_mutual_secret != NULL) {
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len = strlen(auth->a_mutual_secret);
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if (len > 16) {
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if (auth->a_auth_group->ag_name != NULL)
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log_warnx("mutual secret for user \"%s\", "
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"auth-group \"%s\", is too long; it should "
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"be at most 16 characters long",
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auth->a_user, auth->a_auth_group->ag_name);
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else
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log_warnx("mutual secret for user \"%s\", "
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"target \"%s\", is too long; it should "
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"be at most 16 characters long",
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auth->a_user,
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auth->a_auth_group->ag_target->t_name);
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}
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if (len < 12) {
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if (auth->a_auth_group->ag_name != NULL)
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log_warnx("mutual secret for user \"%s\", "
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"auth-group \"%s\", is too short; it "
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"should be at least 12 characters long",
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auth->a_user, auth->a_auth_group->ag_name);
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else
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log_warnx("mutual secret for user \"%s\", "
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"target \"%s\", is too short; it should be "
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"at least 16 characters long",
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auth->a_user,
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auth->a_auth_group->ag_target->t_name);
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}
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}
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}
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const struct auth *
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auth_new_chap(struct auth_group *ag, const char *user,
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const char *secret)
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{
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struct auth *auth;
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if (ag->ag_type == AG_TYPE_UNKNOWN)
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ag->ag_type = AG_TYPE_CHAP;
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if (ag->ag_type != AG_TYPE_CHAP) {
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if (ag->ag_name != NULL)
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log_warnx("cannot mix \"chap\" authentication with "
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"other types for auth-group \"%s\"", ag->ag_name);
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else
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log_warnx("cannot mix \"chap\" authentication with "
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"other types for target \"%s\"",
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ag->ag_target->t_name);
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return (NULL);
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}
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auth = auth_new(ag);
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auth->a_user = checked_strdup(user);
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auth->a_secret = checked_strdup(secret);
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auth_check_secret_length(auth);
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return (auth);
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}
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const struct auth *
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auth_new_chap_mutual(struct auth_group *ag, const char *user,
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const char *secret, const char *user2, const char *secret2)
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{
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struct auth *auth;
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if (ag->ag_type == AG_TYPE_UNKNOWN)
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ag->ag_type = AG_TYPE_CHAP_MUTUAL;
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if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) {
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if (ag->ag_name != NULL)
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log_warnx("cannot mix \"chap-mutual\" authentication "
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"with other types for auth-group \"%s\"",
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ag->ag_name);
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else
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log_warnx("cannot mix \"chap-mutual\" authentication "
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"with other types for target \"%s\"",
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ag->ag_target->t_name);
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return (NULL);
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}
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auth = auth_new(ag);
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auth->a_user = checked_strdup(user);
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auth->a_secret = checked_strdup(secret);
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auth->a_mutual_user = checked_strdup(user2);
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auth->a_mutual_secret = checked_strdup(secret2);
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auth_check_secret_length(auth);
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return (auth);
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}
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const struct auth_name *
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auth_name_new(struct auth_group *ag, const char *name)
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{
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struct auth_name *an;
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an = calloc(1, sizeof(*an));
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if (an == NULL)
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log_err(1, "calloc");
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an->an_auth_group = ag;
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an->an_initator_name = checked_strdup(name);
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TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next);
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return (an);
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}
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static void
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auth_name_delete(struct auth_name *an)
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{
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TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next);
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free(an->an_initator_name);
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free(an);
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}
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bool
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auth_name_defined(const struct auth_group *ag)
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{
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if (TAILQ_EMPTY(&ag->ag_names))
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return (false);
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return (true);
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}
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const struct auth_name *
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auth_name_find(const struct auth_group *ag, const char *name)
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{
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const struct auth_name *auth_name;
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TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) {
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if (strcmp(auth_name->an_initator_name, name) == 0)
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return (auth_name);
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}
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return (NULL);
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}
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int
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auth_name_check(const struct auth_group *ag, const char *initiator_name)
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{
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if (!auth_name_defined(ag))
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return (0);
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if (auth_name_find(ag, initiator_name) == NULL)
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return (1);
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return (0);
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}
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const struct auth_portal *
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auth_portal_new(struct auth_group *ag, const char *portal)
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{
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struct auth_portal *ap;
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char *net, *mask, *str, *tmp;
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int len, dm, m;
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ap = calloc(1, sizeof(*ap));
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if (ap == NULL)
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log_err(1, "calloc");
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ap->ap_auth_group = ag;
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ap->ap_initator_portal = checked_strdup(portal);
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mask = str = checked_strdup(portal);
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net = strsep(&mask, "/");
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if (net[0] == '[')
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net++;
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len = strlen(net);
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if (len == 0)
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goto error;
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if (net[len - 1] == ']')
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net[len - 1] = 0;
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if (strchr(net, ':') != NULL) {
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struct sockaddr_in6 *sin6 =
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(struct sockaddr_in6 *)&ap->ap_sa;
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sin6->sin6_len = sizeof(*sin6);
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sin6->sin6_family = AF_INET6;
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if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0)
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goto error;
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dm = 128;
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} else {
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struct sockaddr_in *sin =
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(struct sockaddr_in *)&ap->ap_sa;
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sin->sin_len = sizeof(*sin);
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sin->sin_family = AF_INET;
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if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0)
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goto error;
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dm = 32;
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}
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if (mask != NULL) {
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m = strtol(mask, &tmp, 0);
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if (m < 0 || m > dm || tmp[0] != 0)
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goto error;
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} else
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m = dm;
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ap->ap_mask = m;
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free(str);
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TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next);
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return (ap);
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error:
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free(ap);
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log_errx(1, "Incorrect initiator portal '%s'", portal);
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return (NULL);
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}
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|
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static void
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auth_portal_delete(struct auth_portal *ap)
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{
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TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next);
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free(ap->ap_initator_portal);
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free(ap);
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}
|
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|
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bool
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auth_portal_defined(const struct auth_group *ag)
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{
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if (TAILQ_EMPTY(&ag->ag_portals))
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return (false);
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return (true);
|
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}
|
|
|
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const struct auth_portal *
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auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss)
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{
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const struct auth_portal *ap;
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const uint8_t *a, *b;
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int i;
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uint8_t bmask;
|
|
|
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TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) {
|
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if (ap->ap_sa.ss_family != ss->ss_family)
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continue;
|
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if (ss->ss_family == AF_INET) {
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a = (const uint8_t *)
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&((const struct sockaddr_in *)ss)->sin_addr;
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b = (const uint8_t *)
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&((const struct sockaddr_in *)&ap->ap_sa)->sin_addr;
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} else {
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a = (const uint8_t *)
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&((const struct sockaddr_in6 *)ss)->sin6_addr;
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b = (const uint8_t *)
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&((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr;
|
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}
|
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for (i = 0; i < ap->ap_mask / 8; i++) {
|
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if (a[i] != b[i])
|
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goto next;
|
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}
|
|
if (ap->ap_mask % 8) {
|
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bmask = 0xff << (8 - (ap->ap_mask % 8));
|
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if ((a[i] & bmask) != (b[i] & bmask))
|
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goto next;
|
|
}
|
|
return (ap);
|
|
next:
|
|
;
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
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|
auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa)
|
|
{
|
|
|
|
if (!auth_portal_defined(ag))
|
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return (0);
|
|
|
|
if (auth_portal_find(ag, sa) == NULL)
|
|
return (1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
struct auth_group *
|
|
auth_group_new(struct conf *conf, const char *name)
|
|
{
|
|
struct auth_group *ag;
|
|
|
|
if (name != NULL) {
|
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ag = auth_group_find(conf, name);
|
|
if (ag != NULL) {
|
|
log_warnx("duplicated auth-group \"%s\"", name);
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
ag = calloc(1, sizeof(*ag));
|
|
if (ag == NULL)
|
|
log_err(1, "calloc");
|
|
if (name != NULL)
|
|
ag->ag_name = checked_strdup(name);
|
|
TAILQ_INIT(&ag->ag_auths);
|
|
TAILQ_INIT(&ag->ag_names);
|
|
TAILQ_INIT(&ag->ag_portals);
|
|
ag->ag_conf = conf;
|
|
TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next);
|
|
|
|
return (ag);
|
|
}
|
|
|
|
void
|
|
auth_group_delete(struct auth_group *ag)
|
|
{
|
|
struct auth *auth, *auth_tmp;
|
|
struct auth_name *auth_name, *auth_name_tmp;
|
|
struct auth_portal *auth_portal, *auth_portal_tmp;
|
|
|
|
TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next);
|
|
|
|
TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp)
|
|
auth_delete(auth);
|
|
TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp)
|
|
auth_name_delete(auth_name);
|
|
TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next,
|
|
auth_portal_tmp)
|
|
auth_portal_delete(auth_portal);
|
|
free(ag->ag_name);
|
|
free(ag);
|
|
}
|
|
|
|
struct auth_group *
|
|
auth_group_find(const struct conf *conf, const char *name)
|
|
{
|
|
struct auth_group *ag;
|
|
|
|
TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
|
|
if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0)
|
|
return (ag);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
auth_group_set_type(struct auth_group *ag, const char *str)
|
|
{
|
|
int type;
|
|
|
|
if (strcmp(str, "none") == 0) {
|
|
type = AG_TYPE_NO_AUTHENTICATION;
|
|
} else if (strcmp(str, "deny") == 0) {
|
|
type = AG_TYPE_DENY;
|
|
} else if (strcmp(str, "chap") == 0) {
|
|
type = AG_TYPE_CHAP;
|
|
} else if (strcmp(str, "chap-mutual") == 0) {
|
|
type = AG_TYPE_CHAP_MUTUAL;
|
|
} else {
|
|
if (ag->ag_name != NULL)
|
|
log_warnx("invalid auth-type \"%s\" for auth-group "
|
|
"\"%s\"", str, ag->ag_name);
|
|
else
|
|
log_warnx("invalid auth-type \"%s\" for target "
|
|
"\"%s\"", str, ag->ag_target->t_name);
|
|
return (1);
|
|
}
|
|
|
|
if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) {
|
|
if (ag->ag_name != NULL) {
|
|
log_warnx("cannot set auth-type to \"%s\" for "
|
|
"auth-group \"%s\"; already has a different "
|
|
"type", str, ag->ag_name);
|
|
} else {
|
|
log_warnx("cannot set auth-type to \"%s\" for target "
|
|
"\"%s\"; already has a different type",
|
|
str, ag->ag_target->t_name);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
ag->ag_type = type;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static struct portal *
|
|
portal_new(struct portal_group *pg)
|
|
{
|
|
struct portal *portal;
|
|
|
|
portal = calloc(1, sizeof(*portal));
|
|
if (portal == NULL)
|
|
log_err(1, "calloc");
|
|
TAILQ_INIT(&portal->p_targets);
|
|
portal->p_portal_group = pg;
|
|
TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next);
|
|
return (portal);
|
|
}
|
|
|
|
static void
|
|
portal_delete(struct portal *portal)
|
|
{
|
|
|
|
TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next);
|
|
if (portal->p_ai != NULL)
|
|
freeaddrinfo(portal->p_ai);
|
|
free(portal->p_listen);
|
|
free(portal);
|
|
}
|
|
|
|
struct portal_group *
|
|
portal_group_new(struct conf *conf, const char *name)
|
|
{
|
|
struct portal_group *pg;
|
|
|
|
pg = portal_group_find(conf, name);
|
|
if (pg != NULL) {
|
|
log_warnx("duplicated portal-group \"%s\"", name);
|
|
return (NULL);
|
|
}
|
|
|
|
pg = calloc(1, sizeof(*pg));
|
|
if (pg == NULL)
|
|
log_err(1, "calloc");
|
|
pg->pg_name = checked_strdup(name);
|
|
TAILQ_INIT(&pg->pg_portals);
|
|
TAILQ_INIT(&pg->pg_ports);
|
|
pg->pg_conf = conf;
|
|
pg->pg_tag = 0; /* Assigned later in conf_apply(). */
|
|
TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next);
|
|
|
|
return (pg);
|
|
}
|
|
|
|
void
|
|
portal_group_delete(struct portal_group *pg)
|
|
{
|
|
struct portal *portal, *tmp;
|
|
struct port *port, *tport;
|
|
|
|
TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport)
|
|
port_delete(port);
|
|
TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next);
|
|
|
|
TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp)
|
|
portal_delete(portal);
|
|
free(pg->pg_name);
|
|
free(pg->pg_offload);
|
|
free(pg->pg_redirection);
|
|
free(pg);
|
|
}
|
|
|
|
struct portal_group *
|
|
portal_group_find(const struct conf *conf, const char *name)
|
|
{
|
|
struct portal_group *pg;
|
|
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
if (strcmp(pg->pg_name, name) == 0)
|
|
return (pg);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
static int
|
|
parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai)
|
|
{
|
|
struct addrinfo hints;
|
|
char *str, *addr, *ch;
|
|
const char *port;
|
|
int error, colons = 0;
|
|
|
|
str = arg = strdup(arg);
|
|
if (arg[0] == '[') {
|
|
/*
|
|
* IPv6 address in square brackets, perhaps with port.
|
|
*/
|
|
arg++;
|
|
addr = strsep(&arg, "]");
|
|
if (arg == NULL)
|
|
return (1);
|
|
if (arg[0] == '\0') {
|
|
port = def_port;
|
|
} else if (arg[0] == ':') {
|
|
port = arg + 1;
|
|
} else {
|
|
free(str);
|
|
return (1);
|
|
}
|
|
} else {
|
|
/*
|
|
* Either IPv6 address without brackets - and without
|
|
* a port - or IPv4 address. Just count the colons.
|
|
*/
|
|
for (ch = arg; *ch != '\0'; ch++) {
|
|
if (*ch == ':')
|
|
colons++;
|
|
}
|
|
if (colons > 1) {
|
|
addr = arg;
|
|
port = def_port;
|
|
} else {
|
|
addr = strsep(&arg, ":");
|
|
if (arg == NULL)
|
|
port = def_port;
|
|
else
|
|
port = arg;
|
|
}
|
|
}
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_flags = AI_PASSIVE;
|
|
error = getaddrinfo(addr, port, &hints, ai);
|
|
free(str);
|
|
return ((error != 0) ? 1 : 0);
|
|
}
|
|
|
|
int
|
|
portal_group_add_listen(struct portal_group *pg, const char *value, bool iser)
|
|
{
|
|
struct portal *portal;
|
|
|
|
portal = portal_new(pg);
|
|
portal->p_listen = checked_strdup(value);
|
|
portal->p_iser = iser;
|
|
|
|
if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) {
|
|
log_warnx("invalid listen address %s", portal->p_listen);
|
|
portal_delete(portal);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* XXX: getaddrinfo(3) may return multiple addresses; we should turn
|
|
* those into multiple portals.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
isns_new(struct conf *conf, const char *addr)
|
|
{
|
|
struct isns *isns;
|
|
|
|
isns = calloc(1, sizeof(*isns));
|
|
if (isns == NULL)
|
|
log_err(1, "calloc");
|
|
isns->i_conf = conf;
|
|
TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next);
|
|
isns->i_addr = checked_strdup(addr);
|
|
|
|
if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) {
|
|
log_warnx("invalid iSNS address %s", isns->i_addr);
|
|
isns_delete(isns);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* XXX: getaddrinfo(3) may return multiple addresses; we should turn
|
|
* those into multiple servers.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
isns_delete(struct isns *isns)
|
|
{
|
|
|
|
TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next);
|
|
free(isns->i_addr);
|
|
if (isns->i_ai != NULL)
|
|
freeaddrinfo(isns->i_ai);
|
|
free(isns);
|
|
}
|
|
|
|
static int
|
|
isns_do_connect(struct isns *isns)
|
|
{
|
|
int s;
|
|
|
|
s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype,
|
|
isns->i_ai->ai_protocol);
|
|
if (s < 0) {
|
|
log_warn("socket(2) failed for %s", isns->i_addr);
|
|
return (-1);
|
|
}
|
|
if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) {
|
|
log_warn("connect(2) failed for %s", isns->i_addr);
|
|
close(s);
|
|
return (-1);
|
|
}
|
|
return(s);
|
|
}
|
|
|
|
static int
|
|
isns_do_register(struct isns *isns, int s, const char *hostname)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
struct target *target;
|
|
struct portal *portal;
|
|
struct portal_group *pg;
|
|
struct port *port;
|
|
struct isns_req *req;
|
|
int res = 0;
|
|
uint32_t error;
|
|
|
|
req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT);
|
|
isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
|
|
isns_req_add_delim(req);
|
|
isns_req_add_str(req, 1, hostname);
|
|
isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */
|
|
isns_req_add_32(req, 6, conf->conf_isns_period);
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
if (pg->pg_unassigned)
|
|
continue;
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
|
|
isns_req_add_addr(req, 16, portal->p_ai);
|
|
isns_req_add_port(req, 17, portal->p_ai);
|
|
}
|
|
}
|
|
TAILQ_FOREACH(target, &conf->conf_targets, t_next) {
|
|
isns_req_add_str(req, 32, target->t_name);
|
|
isns_req_add_32(req, 33, 1); /* 1 -- Target*/
|
|
if (target->t_alias != NULL)
|
|
isns_req_add_str(req, 34, target->t_alias);
|
|
TAILQ_FOREACH(port, &target->t_ports, p_ts) {
|
|
if ((pg = port->p_portal_group) == NULL)
|
|
continue;
|
|
isns_req_add_32(req, 51, pg->pg_tag);
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
|
|
isns_req_add_addr(req, 49, portal->p_ai);
|
|
isns_req_add_port(req, 50, portal->p_ai);
|
|
}
|
|
}
|
|
}
|
|
res = isns_req_send(s, req);
|
|
if (res < 0) {
|
|
log_warn("send(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
res = isns_req_receive(s, req);
|
|
if (res < 0) {
|
|
log_warn("receive(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
error = isns_req_get_status(req);
|
|
if (error != 0) {
|
|
log_warnx("iSNS register error %d for %s", error, isns->i_addr);
|
|
res = -1;
|
|
}
|
|
quit:
|
|
isns_req_free(req);
|
|
return (res);
|
|
}
|
|
|
|
static int
|
|
isns_do_check(struct isns *isns, int s, const char *hostname)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
struct isns_req *req;
|
|
int res = 0;
|
|
uint32_t error;
|
|
|
|
req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT);
|
|
isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
|
|
isns_req_add_str(req, 1, hostname);
|
|
isns_req_add_delim(req);
|
|
isns_req_add(req, 2, 0, NULL);
|
|
res = isns_req_send(s, req);
|
|
if (res < 0) {
|
|
log_warn("send(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
res = isns_req_receive(s, req);
|
|
if (res < 0) {
|
|
log_warn("receive(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
error = isns_req_get_status(req);
|
|
if (error != 0) {
|
|
log_warnx("iSNS check error %d for %s", error, isns->i_addr);
|
|
res = -1;
|
|
}
|
|
quit:
|
|
isns_req_free(req);
|
|
return (res);
|
|
}
|
|
|
|
static int
|
|
isns_do_deregister(struct isns *isns, int s, const char *hostname)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
struct isns_req *req;
|
|
int res = 0;
|
|
uint32_t error;
|
|
|
|
req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT);
|
|
isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
|
|
isns_req_add_delim(req);
|
|
isns_req_add_str(req, 1, hostname);
|
|
res = isns_req_send(s, req);
|
|
if (res < 0) {
|
|
log_warn("send(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
res = isns_req_receive(s, req);
|
|
if (res < 0) {
|
|
log_warn("receive(2) failed for %s", isns->i_addr);
|
|
goto quit;
|
|
}
|
|
error = isns_req_get_status(req);
|
|
if (error != 0) {
|
|
log_warnx("iSNS deregister error %d for %s", error, isns->i_addr);
|
|
res = -1;
|
|
}
|
|
quit:
|
|
isns_req_free(req);
|
|
return (res);
|
|
}
|
|
|
|
void
|
|
isns_register(struct isns *isns, struct isns *oldisns)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
int s;
|
|
char hostname[256];
|
|
|
|
if (TAILQ_EMPTY(&conf->conf_targets) ||
|
|
TAILQ_EMPTY(&conf->conf_portal_groups))
|
|
return;
|
|
set_timeout(conf->conf_isns_timeout, false);
|
|
s = isns_do_connect(isns);
|
|
if (s < 0) {
|
|
set_timeout(0, false);
|
|
return;
|
|
}
|
|
gethostname(hostname, sizeof(hostname));
|
|
|
|
if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets))
|
|
oldisns = isns;
|
|
isns_do_deregister(oldisns, s, hostname);
|
|
isns_do_register(isns, s, hostname);
|
|
close(s);
|
|
set_timeout(0, false);
|
|
}
|
|
|
|
void
|
|
isns_check(struct isns *isns)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
int s, res;
|
|
char hostname[256];
|
|
|
|
if (TAILQ_EMPTY(&conf->conf_targets) ||
|
|
TAILQ_EMPTY(&conf->conf_portal_groups))
|
|
return;
|
|
set_timeout(conf->conf_isns_timeout, false);
|
|
s = isns_do_connect(isns);
|
|
if (s < 0) {
|
|
set_timeout(0, false);
|
|
return;
|
|
}
|
|
gethostname(hostname, sizeof(hostname));
|
|
|
|
res = isns_do_check(isns, s, hostname);
|
|
if (res < 0) {
|
|
isns_do_deregister(isns, s, hostname);
|
|
isns_do_register(isns, s, hostname);
|
|
}
|
|
close(s);
|
|
set_timeout(0, false);
|
|
}
|
|
|
|
void
|
|
isns_deregister(struct isns *isns)
|
|
{
|
|
struct conf *conf = isns->i_conf;
|
|
int s;
|
|
char hostname[256];
|
|
|
|
if (TAILQ_EMPTY(&conf->conf_targets) ||
|
|
TAILQ_EMPTY(&conf->conf_portal_groups))
|
|
return;
|
|
set_timeout(conf->conf_isns_timeout, false);
|
|
s = isns_do_connect(isns);
|
|
if (s < 0)
|
|
return;
|
|
gethostname(hostname, sizeof(hostname));
|
|
|
|
isns_do_deregister(isns, s, hostname);
|
|
close(s);
|
|
set_timeout(0, false);
|
|
}
|
|
|
|
int
|
|
portal_group_set_filter(struct portal_group *pg, const char *str)
|
|
{
|
|
int filter;
|
|
|
|
if (strcmp(str, "none") == 0) {
|
|
filter = PG_FILTER_NONE;
|
|
} else if (strcmp(str, "portal") == 0) {
|
|
filter = PG_FILTER_PORTAL;
|
|
} else if (strcmp(str, "portal-name") == 0) {
|
|
filter = PG_FILTER_PORTAL_NAME;
|
|
} else if (strcmp(str, "portal-name-auth") == 0) {
|
|
filter = PG_FILTER_PORTAL_NAME_AUTH;
|
|
} else {
|
|
log_warnx("invalid discovery-filter \"%s\" for portal-group "
|
|
"\"%s\"; valid values are \"none\", \"portal\", "
|
|
"\"portal-name\", and \"portal-name-auth\"",
|
|
str, pg->pg_name);
|
|
return (1);
|
|
}
|
|
|
|
if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN &&
|
|
pg->pg_discovery_filter != filter) {
|
|
log_warnx("cannot set discovery-filter to \"%s\" for "
|
|
"portal-group \"%s\"; already has a different "
|
|
"value", str, pg->pg_name);
|
|
return (1);
|
|
}
|
|
|
|
pg->pg_discovery_filter = filter;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
portal_group_set_offload(struct portal_group *pg, const char *offload)
|
|
{
|
|
|
|
if (pg->pg_offload != NULL) {
|
|
log_warnx("cannot set offload to \"%s\" for "
|
|
"portal-group \"%s\"; already defined",
|
|
offload, pg->pg_name);
|
|
return (1);
|
|
}
|
|
|
|
pg->pg_offload = checked_strdup(offload);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
portal_group_set_redirection(struct portal_group *pg, const char *addr)
|
|
{
|
|
|
|
if (pg->pg_redirection != NULL) {
|
|
log_warnx("cannot set redirection to \"%s\" for "
|
|
"portal-group \"%s\"; already defined",
|
|
addr, pg->pg_name);
|
|
return (1);
|
|
}
|
|
|
|
pg->pg_redirection = checked_strdup(addr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static bool
|
|
valid_hex(const char ch)
|
|
{
|
|
switch (ch) {
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
case 'a':
|
|
case 'A':
|
|
case 'b':
|
|
case 'B':
|
|
case 'c':
|
|
case 'C':
|
|
case 'd':
|
|
case 'D':
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'F':
|
|
return (true);
|
|
default:
|
|
return (false);
|
|
}
|
|
}
|
|
|
|
bool
|
|
valid_iscsi_name(const char *name)
|
|
{
|
|
int i;
|
|
|
|
if (strlen(name) >= MAX_NAME_LEN) {
|
|
log_warnx("overlong name for target \"%s\"; max length allowed "
|
|
"by iSCSI specification is %d characters",
|
|
name, MAX_NAME_LEN);
|
|
return (false);
|
|
}
|
|
|
|
/*
|
|
* In the cases below, we don't return an error, just in case the admin
|
|
* was right, and we're wrong.
|
|
*/
|
|
if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
|
|
for (i = strlen("iqn."); name[i] != '\0'; i++) {
|
|
/*
|
|
* XXX: We should verify UTF-8 normalisation, as defined
|
|
* by 3.2.6.2: iSCSI Name Encoding.
|
|
*/
|
|
if (isalnum(name[i]))
|
|
continue;
|
|
if (name[i] == '-' || name[i] == '.' || name[i] == ':')
|
|
continue;
|
|
log_warnx("invalid character \"%c\" in target name "
|
|
"\"%s\"; allowed characters are letters, digits, "
|
|
"'-', '.', and ':'", name[i], name);
|
|
break;
|
|
}
|
|
/*
|
|
* XXX: Check more stuff: valid date and a valid reversed domain.
|
|
*/
|
|
} else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
|
|
if (strlen(name) != strlen("eui.") + 16)
|
|
log_warnx("invalid target name \"%s\"; the \"eui.\" "
|
|
"should be followed by exactly 16 hexadecimal "
|
|
"digits", name);
|
|
for (i = strlen("eui."); name[i] != '\0'; i++) {
|
|
if (!valid_hex(name[i])) {
|
|
log_warnx("invalid character \"%c\" in target "
|
|
"name \"%s\"; allowed characters are 1-9 "
|
|
"and A-F", name[i], name);
|
|
break;
|
|
}
|
|
}
|
|
} else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
|
|
if (strlen(name) > strlen("naa.") + 32)
|
|
log_warnx("invalid target name \"%s\"; the \"naa.\" "
|
|
"should be followed by at most 32 hexadecimal "
|
|
"digits", name);
|
|
for (i = strlen("naa."); name[i] != '\0'; i++) {
|
|
if (!valid_hex(name[i])) {
|
|
log_warnx("invalid character \"%c\" in target "
|
|
"name \"%s\"; allowed characters are 1-9 "
|
|
"and A-F", name[i], name);
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
log_warnx("invalid target name \"%s\"; should start with "
|
|
"either \"iqn.\", \"eui.\", or \"naa.\"",
|
|
name);
|
|
}
|
|
return (true);
|
|
}
|
|
|
|
struct pport *
|
|
pport_new(struct conf *conf, const char *name, uint32_t ctl_port)
|
|
{
|
|
struct pport *pp;
|
|
|
|
pp = calloc(1, sizeof(*pp));
|
|
if (pp == NULL)
|
|
log_err(1, "calloc");
|
|
pp->pp_conf = conf;
|
|
pp->pp_name = checked_strdup(name);
|
|
pp->pp_ctl_port = ctl_port;
|
|
TAILQ_INIT(&pp->pp_ports);
|
|
TAILQ_INSERT_TAIL(&conf->conf_pports, pp, pp_next);
|
|
return (pp);
|
|
}
|
|
|
|
struct pport *
|
|
pport_find(const struct conf *conf, const char *name)
|
|
{
|
|
struct pport *pp;
|
|
|
|
TAILQ_FOREACH(pp, &conf->conf_pports, pp_next) {
|
|
if (strcasecmp(pp->pp_name, name) == 0)
|
|
return (pp);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
struct pport *
|
|
pport_copy(struct pport *pp, struct conf *conf)
|
|
{
|
|
struct pport *ppnew;
|
|
|
|
ppnew = pport_new(conf, pp->pp_name, pp->pp_ctl_port);
|
|
return (ppnew);
|
|
}
|
|
|
|
void
|
|
pport_delete(struct pport *pp)
|
|
{
|
|
struct port *port, *tport;
|
|
|
|
TAILQ_FOREACH_SAFE(port, &pp->pp_ports, p_ts, tport)
|
|
port_delete(port);
|
|
TAILQ_REMOVE(&pp->pp_conf->conf_pports, pp, pp_next);
|
|
free(pp->pp_name);
|
|
free(pp);
|
|
}
|
|
|
|
struct port *
|
|
port_new(struct conf *conf, struct target *target, struct portal_group *pg)
|
|
{
|
|
struct port *port;
|
|
char *name;
|
|
int ret;
|
|
|
|
ret = asprintf(&name, "%s-%s", pg->pg_name, target->t_name);
|
|
if (ret <= 0)
|
|
log_err(1, "asprintf");
|
|
if (port_find(conf, name) != NULL) {
|
|
log_warnx("duplicate port \"%s\"", name);
|
|
free(name);
|
|
return (NULL);
|
|
}
|
|
port = calloc(1, sizeof(*port));
|
|
if (port == NULL)
|
|
log_err(1, "calloc");
|
|
port->p_conf = conf;
|
|
port->p_name = name;
|
|
TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
|
|
TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
|
|
port->p_target = target;
|
|
TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
|
|
port->p_portal_group = pg;
|
|
port->p_foreign = pg->pg_foreign;
|
|
return (port);
|
|
}
|
|
|
|
struct port *
|
|
port_new_pp(struct conf *conf, struct target *target, struct pport *pp)
|
|
{
|
|
struct port *port;
|
|
char *name;
|
|
int ret;
|
|
|
|
ret = asprintf(&name, "%s-%s", pp->pp_name, target->t_name);
|
|
if (ret <= 0)
|
|
log_err(1, "asprintf");
|
|
if (port_find(conf, name) != NULL) {
|
|
log_warnx("duplicate port \"%s\"", name);
|
|
free(name);
|
|
return (NULL);
|
|
}
|
|
port = calloc(1, sizeof(*port));
|
|
if (port == NULL)
|
|
log_err(1, "calloc");
|
|
port->p_conf = conf;
|
|
port->p_name = name;
|
|
TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
|
|
TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
|
|
port->p_target = target;
|
|
TAILQ_INSERT_TAIL(&pp->pp_ports, port, p_pps);
|
|
port->p_pport = pp;
|
|
return (port);
|
|
}
|
|
|
|
struct port *
|
|
port_find(const struct conf *conf, const char *name)
|
|
{
|
|
struct port *port;
|
|
|
|
TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
|
|
if (strcasecmp(port->p_name, name) == 0)
|
|
return (port);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
struct port *
|
|
port_find_in_pg(const struct portal_group *pg, const char *target)
|
|
{
|
|
struct port *port;
|
|
|
|
TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) {
|
|
if (strcasecmp(port->p_target->t_name, target) == 0)
|
|
return (port);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
port_delete(struct port *port)
|
|
{
|
|
|
|
if (port->p_portal_group)
|
|
TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs);
|
|
if (port->p_pport)
|
|
TAILQ_REMOVE(&port->p_pport->pp_ports, port, p_pps);
|
|
if (port->p_target)
|
|
TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts);
|
|
TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next);
|
|
free(port->p_name);
|
|
free(port);
|
|
}
|
|
|
|
struct target *
|
|
target_new(struct conf *conf, const char *name)
|
|
{
|
|
struct target *targ;
|
|
int i, len;
|
|
|
|
targ = target_find(conf, name);
|
|
if (targ != NULL) {
|
|
log_warnx("duplicated target \"%s\"", name);
|
|
return (NULL);
|
|
}
|
|
if (valid_iscsi_name(name) == false) {
|
|
log_warnx("target name \"%s\" is invalid", name);
|
|
return (NULL);
|
|
}
|
|
targ = calloc(1, sizeof(*targ));
|
|
if (targ == NULL)
|
|
log_err(1, "calloc");
|
|
targ->t_name = checked_strdup(name);
|
|
|
|
/*
|
|
* RFC 3722 requires us to normalize the name to lowercase.
|
|
*/
|
|
len = strlen(name);
|
|
for (i = 0; i < len; i++)
|
|
targ->t_name[i] = tolower(targ->t_name[i]);
|
|
|
|
targ->t_conf = conf;
|
|
TAILQ_INIT(&targ->t_ports);
|
|
TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
|
|
|
|
return (targ);
|
|
}
|
|
|
|
void
|
|
target_delete(struct target *targ)
|
|
{
|
|
struct port *port, *tport;
|
|
|
|
TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport)
|
|
port_delete(port);
|
|
TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next);
|
|
|
|
free(targ->t_name);
|
|
free(targ->t_redirection);
|
|
free(targ);
|
|
}
|
|
|
|
struct target *
|
|
target_find(struct conf *conf, const char *name)
|
|
{
|
|
struct target *targ;
|
|
|
|
TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
|
|
if (strcasecmp(targ->t_name, name) == 0)
|
|
return (targ);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
target_set_redirection(struct target *target, const char *addr)
|
|
{
|
|
|
|
if (target->t_redirection != NULL) {
|
|
log_warnx("cannot set redirection to \"%s\" for "
|
|
"target \"%s\"; already defined",
|
|
addr, target->t_name);
|
|
return (1);
|
|
}
|
|
|
|
target->t_redirection = checked_strdup(addr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
struct lun *
|
|
lun_new(struct conf *conf, const char *name)
|
|
{
|
|
struct lun *lun;
|
|
|
|
lun = lun_find(conf, name);
|
|
if (lun != NULL) {
|
|
log_warnx("duplicated lun \"%s\"", name);
|
|
return (NULL);
|
|
}
|
|
|
|
lun = calloc(1, sizeof(*lun));
|
|
if (lun == NULL)
|
|
log_err(1, "calloc");
|
|
lun->l_conf = conf;
|
|
lun->l_name = checked_strdup(name);
|
|
TAILQ_INIT(&lun->l_options);
|
|
TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next);
|
|
lun->l_ctl_lun = -1;
|
|
|
|
return (lun);
|
|
}
|
|
|
|
void
|
|
lun_delete(struct lun *lun)
|
|
{
|
|
struct target *targ;
|
|
struct lun_option *lo, *tmp;
|
|
int i;
|
|
|
|
TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) {
|
|
for (i = 0; i < MAX_LUNS; i++) {
|
|
if (targ->t_luns[i] == lun)
|
|
targ->t_luns[i] = NULL;
|
|
}
|
|
}
|
|
TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next);
|
|
|
|
TAILQ_FOREACH_SAFE(lo, &lun->l_options, lo_next, tmp)
|
|
lun_option_delete(lo);
|
|
free(lun->l_name);
|
|
free(lun->l_backend);
|
|
free(lun->l_device_id);
|
|
free(lun->l_path);
|
|
free(lun->l_scsiname);
|
|
free(lun->l_serial);
|
|
free(lun);
|
|
}
|
|
|
|
struct lun *
|
|
lun_find(const struct conf *conf, const char *name)
|
|
{
|
|
struct lun *lun;
|
|
|
|
TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
|
|
if (strcmp(lun->l_name, name) == 0)
|
|
return (lun);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
lun_set_backend(struct lun *lun, const char *value)
|
|
{
|
|
free(lun->l_backend);
|
|
lun->l_backend = checked_strdup(value);
|
|
}
|
|
|
|
void
|
|
lun_set_blocksize(struct lun *lun, size_t value)
|
|
{
|
|
|
|
lun->l_blocksize = value;
|
|
}
|
|
|
|
void
|
|
lun_set_device_id(struct lun *lun, const char *value)
|
|
{
|
|
free(lun->l_device_id);
|
|
lun->l_device_id = checked_strdup(value);
|
|
}
|
|
|
|
void
|
|
lun_set_path(struct lun *lun, const char *value)
|
|
{
|
|
free(lun->l_path);
|
|
lun->l_path = checked_strdup(value);
|
|
}
|
|
|
|
void
|
|
lun_set_scsiname(struct lun *lun, const char *value)
|
|
{
|
|
free(lun->l_scsiname);
|
|
lun->l_scsiname = checked_strdup(value);
|
|
}
|
|
|
|
void
|
|
lun_set_serial(struct lun *lun, const char *value)
|
|
{
|
|
free(lun->l_serial);
|
|
lun->l_serial = checked_strdup(value);
|
|
}
|
|
|
|
void
|
|
lun_set_size(struct lun *lun, size_t value)
|
|
{
|
|
|
|
lun->l_size = value;
|
|
}
|
|
|
|
void
|
|
lun_set_ctl_lun(struct lun *lun, uint32_t value)
|
|
{
|
|
|
|
lun->l_ctl_lun = value;
|
|
}
|
|
|
|
struct lun_option *
|
|
lun_option_new(struct lun *lun, const char *name, const char *value)
|
|
{
|
|
struct lun_option *lo;
|
|
|
|
lo = lun_option_find(lun, name);
|
|
if (lo != NULL) {
|
|
log_warnx("duplicated lun option \"%s\" for lun \"%s\"",
|
|
name, lun->l_name);
|
|
return (NULL);
|
|
}
|
|
|
|
lo = calloc(1, sizeof(*lo));
|
|
if (lo == NULL)
|
|
log_err(1, "calloc");
|
|
lo->lo_name = checked_strdup(name);
|
|
lo->lo_value = checked_strdup(value);
|
|
lo->lo_lun = lun;
|
|
TAILQ_INSERT_TAIL(&lun->l_options, lo, lo_next);
|
|
|
|
return (lo);
|
|
}
|
|
|
|
void
|
|
lun_option_delete(struct lun_option *lo)
|
|
{
|
|
|
|
TAILQ_REMOVE(&lo->lo_lun->l_options, lo, lo_next);
|
|
|
|
free(lo->lo_name);
|
|
free(lo->lo_value);
|
|
free(lo);
|
|
}
|
|
|
|
struct lun_option *
|
|
lun_option_find(const struct lun *lun, const char *name)
|
|
{
|
|
struct lun_option *lo;
|
|
|
|
TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
|
|
if (strcmp(lo->lo_name, name) == 0)
|
|
return (lo);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
lun_option_set(struct lun_option *lo, const char *value)
|
|
{
|
|
|
|
free(lo->lo_value);
|
|
lo->lo_value = checked_strdup(value);
|
|
}
|
|
|
|
static struct connection *
|
|
connection_new(struct portal *portal, int fd, const char *host,
|
|
const struct sockaddr *client_sa)
|
|
{
|
|
struct connection *conn;
|
|
|
|
conn = calloc(1, sizeof(*conn));
|
|
if (conn == NULL)
|
|
log_err(1, "calloc");
|
|
conn->conn_portal = portal;
|
|
conn->conn_socket = fd;
|
|
conn->conn_initiator_addr = checked_strdup(host);
|
|
memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len);
|
|
|
|
/*
|
|
* Default values, from RFC 3720, section 12.
|
|
*/
|
|
conn->conn_max_data_segment_length = 8192;
|
|
conn->conn_max_burst_length = 262144;
|
|
conn->conn_immediate_data = true;
|
|
|
|
return (conn);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
conf_print(struct conf *conf)
|
|
{
|
|
struct auth_group *ag;
|
|
struct auth *auth;
|
|
struct auth_name *auth_name;
|
|
struct auth_portal *auth_portal;
|
|
struct portal_group *pg;
|
|
struct portal *portal;
|
|
struct target *targ;
|
|
struct lun *lun;
|
|
struct lun_option *lo;
|
|
|
|
TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
|
|
fprintf(stderr, "auth-group %s {\n", ag->ag_name);
|
|
TAILQ_FOREACH(auth, &ag->ag_auths, a_next)
|
|
fprintf(stderr, "\t chap-mutual %s %s %s %s\n",
|
|
auth->a_user, auth->a_secret,
|
|
auth->a_mutual_user, auth->a_mutual_secret);
|
|
TAILQ_FOREACH(auth_name, &ag->ag_names, an_next)
|
|
fprintf(stderr, "\t initiator-name %s\n",
|
|
auth_name->an_initator_name);
|
|
TAILQ_FOREACH(auth_portal, &ag->ag_portals, an_next)
|
|
fprintf(stderr, "\t initiator-portal %s\n",
|
|
auth_portal->an_initator_portal);
|
|
fprintf(stderr, "}\n");
|
|
}
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
fprintf(stderr, "portal-group %s {\n", pg->pg_name);
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
|
|
fprintf(stderr, "\t listen %s\n", portal->p_listen);
|
|
fprintf(stderr, "}\n");
|
|
}
|
|
TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
|
|
fprintf(stderr, "\tlun %s {\n", lun->l_name);
|
|
fprintf(stderr, "\t\tpath %s\n", lun->l_path);
|
|
TAILQ_FOREACH(lo, &lun->l_options, lo_next)
|
|
fprintf(stderr, "\t\toption %s %s\n",
|
|
lo->lo_name, lo->lo_value);
|
|
fprintf(stderr, "\t}\n");
|
|
}
|
|
TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
|
|
fprintf(stderr, "target %s {\n", targ->t_name);
|
|
if (targ->t_alias != NULL)
|
|
fprintf(stderr, "\t alias %s\n", targ->t_alias);
|
|
fprintf(stderr, "}\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
conf_verify_lun(struct lun *lun)
|
|
{
|
|
const struct lun *lun2;
|
|
|
|
if (lun->l_backend == NULL)
|
|
lun_set_backend(lun, "block");
|
|
if (strcmp(lun->l_backend, "block") == 0) {
|
|
if (lun->l_path == NULL) {
|
|
log_warnx("missing path for lun \"%s\"",
|
|
lun->l_name);
|
|
return (1);
|
|
}
|
|
} else if (strcmp(lun->l_backend, "ramdisk") == 0) {
|
|
if (lun->l_size == 0) {
|
|
log_warnx("missing size for ramdisk-backed lun \"%s\"",
|
|
lun->l_name);
|
|
return (1);
|
|
}
|
|
if (lun->l_path != NULL) {
|
|
log_warnx("path must not be specified "
|
|
"for ramdisk-backed lun \"%s\"",
|
|
lun->l_name);
|
|
return (1);
|
|
}
|
|
}
|
|
if (lun->l_blocksize == 0) {
|
|
lun_set_blocksize(lun, DEFAULT_BLOCKSIZE);
|
|
} else if (lun->l_blocksize < 0) {
|
|
log_warnx("invalid blocksize for lun \"%s\"; "
|
|
"must be larger than 0", lun->l_name);
|
|
return (1);
|
|
}
|
|
if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) {
|
|
log_warnx("invalid size for lun \"%s\"; "
|
|
"must be multiple of blocksize", lun->l_name);
|
|
return (1);
|
|
}
|
|
TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) {
|
|
if (lun == lun2)
|
|
continue;
|
|
if (lun->l_path != NULL && lun2->l_path != NULL &&
|
|
strcmp(lun->l_path, lun2->l_path) == 0) {
|
|
log_debugx("WARNING: path \"%s\" duplicated "
|
|
"between lun \"%s\", and "
|
|
"lun \"%s\"", lun->l_path,
|
|
lun->l_name, lun2->l_name);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
conf_verify(struct conf *conf)
|
|
{
|
|
struct auth_group *ag;
|
|
struct portal_group *pg;
|
|
struct port *port;
|
|
struct target *targ;
|
|
struct lun *lun;
|
|
bool found;
|
|
int error, i;
|
|
|
|
if (conf->conf_pidfile_path == NULL)
|
|
conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE);
|
|
|
|
TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
|
|
error = conf_verify_lun(lun);
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
|
|
if (targ->t_auth_group == NULL) {
|
|
targ->t_auth_group = auth_group_find(conf,
|
|
"default");
|
|
assert(targ->t_auth_group != NULL);
|
|
}
|
|
if (TAILQ_EMPTY(&targ->t_ports)) {
|
|
pg = portal_group_find(conf, "default");
|
|
assert(pg != NULL);
|
|
port_new(conf, targ, pg);
|
|
}
|
|
found = false;
|
|
for (i = 0; i < MAX_LUNS; i++) {
|
|
if (targ->t_luns[i] != NULL)
|
|
found = true;
|
|
}
|
|
if (!found && targ->t_redirection == NULL) {
|
|
log_warnx("no LUNs defined for target \"%s\"",
|
|
targ->t_name);
|
|
}
|
|
if (found && targ->t_redirection != NULL) {
|
|
log_debugx("target \"%s\" contains luns, "
|
|
" but configured for redirection",
|
|
targ->t_name);
|
|
}
|
|
}
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
assert(pg->pg_name != NULL);
|
|
if (pg->pg_discovery_auth_group == NULL) {
|
|
pg->pg_discovery_auth_group =
|
|
auth_group_find(conf, "default");
|
|
assert(pg->pg_discovery_auth_group != NULL);
|
|
}
|
|
|
|
if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
|
|
pg->pg_discovery_filter = PG_FILTER_NONE;
|
|
|
|
if (pg->pg_redirection != NULL) {
|
|
if (!TAILQ_EMPTY(&pg->pg_ports)) {
|
|
log_debugx("portal-group \"%s\" assigned "
|
|
"to target, but configured "
|
|
"for redirection",
|
|
pg->pg_name);
|
|
}
|
|
pg->pg_unassigned = false;
|
|
} else if (!TAILQ_EMPTY(&pg->pg_ports)) {
|
|
pg->pg_unassigned = false;
|
|
} else {
|
|
if (strcmp(pg->pg_name, "default") != 0)
|
|
log_warnx("portal-group \"%s\" not assigned "
|
|
"to any target", pg->pg_name);
|
|
pg->pg_unassigned = true;
|
|
}
|
|
}
|
|
TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
|
|
if (ag->ag_name == NULL)
|
|
assert(ag->ag_target != NULL);
|
|
else
|
|
assert(ag->ag_target == NULL);
|
|
|
|
found = false;
|
|
TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
|
|
if (targ->t_auth_group == ag) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
|
|
if (port->p_auth_group == ag) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
if (pg->pg_discovery_auth_group == ag) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found && ag->ag_name != NULL &&
|
|
strcmp(ag->ag_name, "default") != 0 &&
|
|
strcmp(ag->ag_name, "no-authentication") != 0 &&
|
|
strcmp(ag->ag_name, "no-access") != 0) {
|
|
log_warnx("auth-group \"%s\" not assigned "
|
|
"to any target", ag->ag_name);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
conf_apply(struct conf *oldconf, struct conf *newconf)
|
|
{
|
|
struct lun *oldlun, *newlun, *tmplun;
|
|
struct portal_group *oldpg, *newpg;
|
|
struct portal *oldp, *newp;
|
|
struct port *oldport, *newport, *tmpport;
|
|
struct isns *oldns, *newns;
|
|
pid_t otherpid;
|
|
int changed, cumulated_error = 0, error, sockbuf;
|
|
int one = 1;
|
|
|
|
if (oldconf->conf_debug != newconf->conf_debug) {
|
|
log_debugx("changing debug level to %d", newconf->conf_debug);
|
|
log_init(newconf->conf_debug);
|
|
}
|
|
|
|
if (oldconf->conf_pidfh != NULL) {
|
|
assert(oldconf->conf_pidfile_path != NULL);
|
|
if (newconf->conf_pidfile_path != NULL &&
|
|
strcmp(oldconf->conf_pidfile_path,
|
|
newconf->conf_pidfile_path) == 0) {
|
|
newconf->conf_pidfh = oldconf->conf_pidfh;
|
|
oldconf->conf_pidfh = NULL;
|
|
} else {
|
|
log_debugx("removing pidfile %s",
|
|
oldconf->conf_pidfile_path);
|
|
pidfile_remove(oldconf->conf_pidfh);
|
|
oldconf->conf_pidfh = NULL;
|
|
}
|
|
}
|
|
|
|
if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) {
|
|
log_debugx("opening pidfile %s", newconf->conf_pidfile_path);
|
|
newconf->conf_pidfh =
|
|
pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid);
|
|
if (newconf->conf_pidfh == NULL) {
|
|
if (errno == EEXIST)
|
|
log_errx(1, "daemon already running, pid: %jd.",
|
|
(intmax_t)otherpid);
|
|
log_err(1, "cannot open or create pidfile \"%s\"",
|
|
newconf->conf_pidfile_path);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Go through the new portal groups, assigning tags or preserving old.
|
|
*/
|
|
TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
|
|
if (newpg->pg_tag != 0)
|
|
continue;
|
|
oldpg = portal_group_find(oldconf, newpg->pg_name);
|
|
if (oldpg != NULL)
|
|
newpg->pg_tag = oldpg->pg_tag;
|
|
else
|
|
newpg->pg_tag = ++last_portal_group_tag;
|
|
}
|
|
|
|
/* Deregister on removed iSNS servers. */
|
|
TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
|
|
TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
|
|
if (strcmp(oldns->i_addr, newns->i_addr) == 0)
|
|
break;
|
|
}
|
|
if (newns == NULL)
|
|
isns_deregister(oldns);
|
|
}
|
|
|
|
/*
|
|
* XXX: If target or lun removal fails, we should somehow "move"
|
|
* the old lun or target into newconf, so that subsequent
|
|
* conf_apply() would try to remove them again. That would
|
|
* be somewhat hairy, though, and lun deletion failures don't
|
|
* really happen, so leave it as it is for now.
|
|
*/
|
|
/*
|
|
* First, remove any ports present in the old configuration
|
|
* and missing in the new one.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
|
|
if (oldport->p_foreign)
|
|
continue;
|
|
newport = port_find(newconf, oldport->p_name);
|
|
if (newport != NULL && !newport->p_foreign)
|
|
continue;
|
|
log_debugx("removing port \"%s\"", oldport->p_name);
|
|
error = kernel_port_remove(oldport);
|
|
if (error != 0) {
|
|
log_warnx("failed to remove port %s",
|
|
oldport->p_name);
|
|
/*
|
|
* XXX: Uncomment after fixing the root cause.
|
|
*
|
|
* cumulated_error++;
|
|
*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Second, remove any LUNs present in the old configuration
|
|
* and missing in the new one.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) {
|
|
newlun = lun_find(newconf, oldlun->l_name);
|
|
if (newlun == NULL) {
|
|
log_debugx("lun \"%s\", CTL lun %d "
|
|
"not found in new configuration; "
|
|
"removing", oldlun->l_name, oldlun->l_ctl_lun);
|
|
error = kernel_lun_remove(oldlun);
|
|
if (error != 0) {
|
|
log_warnx("failed to remove lun \"%s\", "
|
|
"CTL lun %d",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
cumulated_error++;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Also remove the LUNs changed by more than size.
|
|
*/
|
|
changed = 0;
|
|
assert(oldlun->l_backend != NULL);
|
|
assert(newlun->l_backend != NULL);
|
|
if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) {
|
|
log_debugx("backend for lun \"%s\", "
|
|
"CTL lun %d changed; removing",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
changed = 1;
|
|
}
|
|
if (oldlun->l_blocksize != newlun->l_blocksize) {
|
|
log_debugx("blocksize for lun \"%s\", "
|
|
"CTL lun %d changed; removing",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
changed = 1;
|
|
}
|
|
if (newlun->l_device_id != NULL &&
|
|
(oldlun->l_device_id == NULL ||
|
|
strcmp(oldlun->l_device_id, newlun->l_device_id) !=
|
|
0)) {
|
|
log_debugx("device-id for lun \"%s\", "
|
|
"CTL lun %d changed; removing",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
changed = 1;
|
|
}
|
|
if (newlun->l_path != NULL &&
|
|
(oldlun->l_path == NULL ||
|
|
strcmp(oldlun->l_path, newlun->l_path) != 0)) {
|
|
log_debugx("path for lun \"%s\", "
|
|
"CTL lun %d, changed; removing",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
changed = 1;
|
|
}
|
|
if (newlun->l_serial != NULL &&
|
|
(oldlun->l_serial == NULL ||
|
|
strcmp(oldlun->l_serial, newlun->l_serial) != 0)) {
|
|
log_debugx("serial for lun \"%s\", "
|
|
"CTL lun %d changed; removing",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
changed = 1;
|
|
}
|
|
if (changed) {
|
|
error = kernel_lun_remove(oldlun);
|
|
if (error != 0) {
|
|
log_warnx("failed to remove lun \"%s\", "
|
|
"CTL lun %d",
|
|
oldlun->l_name, oldlun->l_ctl_lun);
|
|
cumulated_error++;
|
|
}
|
|
lun_delete(oldlun);
|
|
continue;
|
|
}
|
|
|
|
lun_set_ctl_lun(newlun, oldlun->l_ctl_lun);
|
|
}
|
|
|
|
TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) {
|
|
oldlun = lun_find(oldconf, newlun->l_name);
|
|
if (oldlun != NULL) {
|
|
log_debugx("modifying lun \"%s\", CTL lun %d",
|
|
newlun->l_name, newlun->l_ctl_lun);
|
|
error = kernel_lun_modify(newlun);
|
|
if (error != 0) {
|
|
log_warnx("failed to "
|
|
"modify lun \"%s\", CTL lun %d",
|
|
newlun->l_name, newlun->l_ctl_lun);
|
|
cumulated_error++;
|
|
}
|
|
continue;
|
|
}
|
|
log_debugx("adding lun \"%s\"", newlun->l_name);
|
|
error = kernel_lun_add(newlun);
|
|
if (error != 0) {
|
|
log_warnx("failed to add lun \"%s\"", newlun->l_name);
|
|
lun_delete(newlun);
|
|
cumulated_error++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now add new ports or modify existing ones.
|
|
*/
|
|
TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
|
|
if (newport->p_foreign)
|
|
continue;
|
|
oldport = port_find(oldconf, newport->p_name);
|
|
|
|
if (oldport == NULL || oldport->p_foreign) {
|
|
log_debugx("adding port \"%s\"", newport->p_name);
|
|
error = kernel_port_add(newport);
|
|
} else {
|
|
log_debugx("updating port \"%s\"", newport->p_name);
|
|
newport->p_ctl_port = oldport->p_ctl_port;
|
|
error = kernel_port_update(newport, oldport);
|
|
}
|
|
if (error != 0) {
|
|
log_warnx("failed to %s port %s",
|
|
(oldport == NULL) ? "add" : "update",
|
|
newport->p_name);
|
|
/*
|
|
* XXX: Uncomment after fixing the root cause.
|
|
*
|
|
* cumulated_error++;
|
|
*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Go through the new portals, opening the sockets as neccessary.
|
|
*/
|
|
TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
|
|
if (newpg->pg_foreign)
|
|
continue;
|
|
if (newpg->pg_unassigned) {
|
|
log_debugx("not listening on portal-group \"%s\", "
|
|
"not assigned to any target",
|
|
newpg->pg_name);
|
|
continue;
|
|
}
|
|
TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) {
|
|
/*
|
|
* Try to find already open portal and reuse
|
|
* the listening socket. We don't care about
|
|
* what portal or portal group that was, what
|
|
* matters is the listening address.
|
|
*/
|
|
TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups,
|
|
pg_next) {
|
|
TAILQ_FOREACH(oldp, &oldpg->pg_portals,
|
|
p_next) {
|
|
if (strcmp(newp->p_listen,
|
|
oldp->p_listen) == 0 &&
|
|
oldp->p_socket > 0) {
|
|
newp->p_socket =
|
|
oldp->p_socket;
|
|
oldp->p_socket = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (newp->p_socket > 0) {
|
|
/*
|
|
* We're done with this portal.
|
|
*/
|
|
continue;
|
|
}
|
|
|
|
#ifdef ICL_KERNEL_PROXY
|
|
if (proxy_mode) {
|
|
newpg->pg_conf->conf_portal_id++;
|
|
newp->p_id = newpg->pg_conf->conf_portal_id;
|
|
log_debugx("listening on %s, portal-group "
|
|
"\"%s\", portal id %d, using ICL proxy",
|
|
newp->p_listen, newpg->pg_name, newp->p_id);
|
|
kernel_listen(newp->p_ai, newp->p_iser,
|
|
newp->p_id);
|
|
continue;
|
|
}
|
|
#endif
|
|
assert(proxy_mode == false);
|
|
assert(newp->p_iser == false);
|
|
|
|
log_debugx("listening on %s, portal-group \"%s\"",
|
|
newp->p_listen, newpg->pg_name);
|
|
newp->p_socket = socket(newp->p_ai->ai_family,
|
|
newp->p_ai->ai_socktype,
|
|
newp->p_ai->ai_protocol);
|
|
if (newp->p_socket < 0) {
|
|
log_warn("socket(2) failed for %s",
|
|
newp->p_listen);
|
|
cumulated_error++;
|
|
continue;
|
|
}
|
|
sockbuf = SOCKBUF_SIZE;
|
|
if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF,
|
|
&sockbuf, sizeof(sockbuf)) == -1)
|
|
log_warn("setsockopt(SO_RCVBUF) failed "
|
|
"for %s", newp->p_listen);
|
|
sockbuf = SOCKBUF_SIZE;
|
|
if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF,
|
|
&sockbuf, sizeof(sockbuf)) == -1)
|
|
log_warn("setsockopt(SO_SNDBUF) failed "
|
|
"for %s", newp->p_listen);
|
|
error = setsockopt(newp->p_socket, SOL_SOCKET,
|
|
SO_REUSEADDR, &one, sizeof(one));
|
|
if (error != 0) {
|
|
log_warn("setsockopt(SO_REUSEADDR) failed "
|
|
"for %s", newp->p_listen);
|
|
close(newp->p_socket);
|
|
newp->p_socket = 0;
|
|
cumulated_error++;
|
|
continue;
|
|
}
|
|
error = bind(newp->p_socket, newp->p_ai->ai_addr,
|
|
newp->p_ai->ai_addrlen);
|
|
if (error != 0) {
|
|
log_warn("bind(2) failed for %s",
|
|
newp->p_listen);
|
|
close(newp->p_socket);
|
|
newp->p_socket = 0;
|
|
cumulated_error++;
|
|
continue;
|
|
}
|
|
error = listen(newp->p_socket, -1);
|
|
if (error != 0) {
|
|
log_warn("listen(2) failed for %s",
|
|
newp->p_listen);
|
|
close(newp->p_socket);
|
|
newp->p_socket = 0;
|
|
cumulated_error++;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Go through the no longer used sockets, closing them.
|
|
*/
|
|
TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) {
|
|
TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) {
|
|
if (oldp->p_socket <= 0)
|
|
continue;
|
|
log_debugx("closing socket for %s, portal-group \"%s\"",
|
|
oldp->p_listen, oldpg->pg_name);
|
|
close(oldp->p_socket);
|
|
oldp->p_socket = 0;
|
|
}
|
|
}
|
|
|
|
/* (Re-)Register on remaining/new iSNS servers. */
|
|
TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
|
|
TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
|
|
if (strcmp(oldns->i_addr, newns->i_addr) == 0)
|
|
break;
|
|
}
|
|
isns_register(newns, oldns);
|
|
}
|
|
|
|
/* Schedule iSNS update */
|
|
if (!TAILQ_EMPTY(&newconf->conf_isns))
|
|
set_timeout((newconf->conf_isns_period + 2) / 3, false);
|
|
|
|
return (cumulated_error);
|
|
}
|
|
|
|
bool
|
|
timed_out(void)
|
|
{
|
|
|
|
return (sigalrm_received);
|
|
}
|
|
|
|
static void
|
|
sigalrm_handler_fatal(int dummy __unused)
|
|
{
|
|
/*
|
|
* It would be easiest to just log an error and exit. We can't
|
|
* do this, though, because log_errx() is not signal safe, since
|
|
* it calls syslog(3). Instead, set a flag checked by pdu_send()
|
|
* and pdu_receive(), to call log_errx() there. Should they fail
|
|
* to notice, we'll exit here one second later.
|
|
*/
|
|
if (sigalrm_received) {
|
|
/*
|
|
* Oh well. Just give up and quit.
|
|
*/
|
|
_exit(2);
|
|
}
|
|
|
|
sigalrm_received = true;
|
|
}
|
|
|
|
static void
|
|
sigalrm_handler(int dummy __unused)
|
|
{
|
|
|
|
sigalrm_received = true;
|
|
}
|
|
|
|
void
|
|
set_timeout(int timeout, int fatal)
|
|
{
|
|
struct sigaction sa;
|
|
struct itimerval itv;
|
|
int error;
|
|
|
|
if (timeout <= 0) {
|
|
log_debugx("session timeout disabled");
|
|
bzero(&itv, sizeof(itv));
|
|
error = setitimer(ITIMER_REAL, &itv, NULL);
|
|
if (error != 0)
|
|
log_err(1, "setitimer");
|
|
sigalrm_received = false;
|
|
return;
|
|
}
|
|
|
|
sigalrm_received = false;
|
|
bzero(&sa, sizeof(sa));
|
|
if (fatal)
|
|
sa.sa_handler = sigalrm_handler_fatal;
|
|
else
|
|
sa.sa_handler = sigalrm_handler;
|
|
sigfillset(&sa.sa_mask);
|
|
error = sigaction(SIGALRM, &sa, NULL);
|
|
if (error != 0)
|
|
log_err(1, "sigaction");
|
|
|
|
/*
|
|
* First SIGALRM will arive after conf_timeout seconds.
|
|
* If we do nothing, another one will arrive a second later.
|
|
*/
|
|
log_debugx("setting session timeout to %d seconds", timeout);
|
|
bzero(&itv, sizeof(itv));
|
|
itv.it_interval.tv_sec = 1;
|
|
itv.it_value.tv_sec = timeout;
|
|
error = setitimer(ITIMER_REAL, &itv, NULL);
|
|
if (error != 0)
|
|
log_err(1, "setitimer");
|
|
}
|
|
|
|
static int
|
|
wait_for_children(bool block)
|
|
{
|
|
pid_t pid;
|
|
int status;
|
|
int num = 0;
|
|
|
|
for (;;) {
|
|
/*
|
|
* If "block" is true, wait for at least one process.
|
|
*/
|
|
if (block && num == 0)
|
|
pid = wait4(-1, &status, 0, NULL);
|
|
else
|
|
pid = wait4(-1, &status, WNOHANG, NULL);
|
|
if (pid <= 0)
|
|
break;
|
|
if (WIFSIGNALED(status)) {
|
|
log_warnx("child process %d terminated with signal %d",
|
|
pid, WTERMSIG(status));
|
|
} else if (WEXITSTATUS(status) != 0) {
|
|
log_warnx("child process %d terminated with exit status %d",
|
|
pid, WEXITSTATUS(status));
|
|
} else {
|
|
log_debugx("child process %d terminated gracefully", pid);
|
|
}
|
|
num++;
|
|
}
|
|
|
|
return (num);
|
|
}
|
|
|
|
static void
|
|
handle_connection(struct portal *portal, int fd,
|
|
const struct sockaddr *client_sa, bool dont_fork)
|
|
{
|
|
struct connection *conn;
|
|
int error;
|
|
pid_t pid;
|
|
char host[NI_MAXHOST + 1];
|
|
struct conf *conf;
|
|
|
|
conf = portal->p_portal_group->pg_conf;
|
|
|
|
if (dont_fork) {
|
|
log_debugx("incoming connection; not forking due to -d flag");
|
|
} else {
|
|
nchildren -= wait_for_children(false);
|
|
assert(nchildren >= 0);
|
|
|
|
while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) {
|
|
log_debugx("maxproc limit of %d child processes hit; "
|
|
"waiting for child process to exit", conf->conf_maxproc);
|
|
nchildren -= wait_for_children(true);
|
|
assert(nchildren >= 0);
|
|
}
|
|
log_debugx("incoming connection; forking child process #%d",
|
|
nchildren);
|
|
nchildren++;
|
|
pid = fork();
|
|
if (pid < 0)
|
|
log_err(1, "fork");
|
|
if (pid > 0) {
|
|
close(fd);
|
|
return;
|
|
}
|
|
}
|
|
pidfile_close(conf->conf_pidfh);
|
|
|
|
error = getnameinfo(client_sa, client_sa->sa_len,
|
|
host, sizeof(host), NULL, 0, NI_NUMERICHOST);
|
|
if (error != 0)
|
|
log_errx(1, "getnameinfo: %s", gai_strerror(error));
|
|
|
|
log_debugx("accepted connection from %s; portal group \"%s\"",
|
|
host, portal->p_portal_group->pg_name);
|
|
log_set_peer_addr(host);
|
|
setproctitle("%s", host);
|
|
|
|
conn = connection_new(portal, fd, host, client_sa);
|
|
set_timeout(conf->conf_timeout, true);
|
|
kernel_capsicate();
|
|
login(conn);
|
|
if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) {
|
|
kernel_handoff(conn);
|
|
log_debugx("connection handed off to the kernel");
|
|
} else {
|
|
assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY);
|
|
discovery(conn);
|
|
}
|
|
log_debugx("nothing more to do; exiting");
|
|
exit(0);
|
|
}
|
|
|
|
static int
|
|
fd_add(int fd, fd_set *fdset, int nfds)
|
|
{
|
|
|
|
/*
|
|
* Skip sockets which we failed to bind.
|
|
*/
|
|
if (fd <= 0)
|
|
return (nfds);
|
|
|
|
FD_SET(fd, fdset);
|
|
if (fd > nfds)
|
|
nfds = fd;
|
|
return (nfds);
|
|
}
|
|
|
|
static void
|
|
main_loop(struct conf *conf, bool dont_fork)
|
|
{
|
|
struct portal_group *pg;
|
|
struct portal *portal;
|
|
struct sockaddr_storage client_sa;
|
|
socklen_t client_salen;
|
|
#ifdef ICL_KERNEL_PROXY
|
|
int connection_id;
|
|
int portal_id;
|
|
#endif
|
|
fd_set fdset;
|
|
int error, nfds, client_fd;
|
|
|
|
pidfile_write(conf->conf_pidfh);
|
|
|
|
for (;;) {
|
|
if (sighup_received || sigterm_received || timed_out())
|
|
return;
|
|
|
|
#ifdef ICL_KERNEL_PROXY
|
|
if (proxy_mode) {
|
|
client_salen = sizeof(client_sa);
|
|
kernel_accept(&connection_id, &portal_id,
|
|
(struct sockaddr *)&client_sa, &client_salen);
|
|
assert(client_salen >= client_sa.ss_len);
|
|
|
|
log_debugx("incoming connection, id %d, portal id %d",
|
|
connection_id, portal_id);
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
|
|
if (portal->p_id == portal_id) {
|
|
goto found;
|
|
}
|
|
}
|
|
}
|
|
|
|
log_errx(1, "kernel returned invalid portal_id %d",
|
|
portal_id);
|
|
|
|
found:
|
|
handle_connection(portal, connection_id,
|
|
(struct sockaddr *)&client_sa, dont_fork);
|
|
} else {
|
|
#endif
|
|
assert(proxy_mode == false);
|
|
|
|
FD_ZERO(&fdset);
|
|
nfds = 0;
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
|
|
nfds = fd_add(portal->p_socket, &fdset, nfds);
|
|
}
|
|
error = select(nfds + 1, &fdset, NULL, NULL, NULL);
|
|
if (error <= 0) {
|
|
if (errno == EINTR)
|
|
return;
|
|
log_err(1, "select");
|
|
}
|
|
TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
|
|
TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
|
|
if (!FD_ISSET(portal->p_socket, &fdset))
|
|
continue;
|
|
client_salen = sizeof(client_sa);
|
|
client_fd = accept(portal->p_socket,
|
|
(struct sockaddr *)&client_sa,
|
|
&client_salen);
|
|
if (client_fd < 0) {
|
|
if (errno == ECONNABORTED)
|
|
continue;
|
|
log_err(1, "accept");
|
|
}
|
|
assert(client_salen >= client_sa.ss_len);
|
|
|
|
handle_connection(portal, client_fd,
|
|
(struct sockaddr *)&client_sa,
|
|
dont_fork);
|
|
break;
|
|
}
|
|
}
|
|
#ifdef ICL_KERNEL_PROXY
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void
|
|
sighup_handler(int dummy __unused)
|
|
{
|
|
|
|
sighup_received = true;
|
|
}
|
|
|
|
static void
|
|
sigterm_handler(int dummy __unused)
|
|
{
|
|
|
|
sigterm_received = true;
|
|
}
|
|
|
|
static void
|
|
sigchld_handler(int dummy __unused)
|
|
{
|
|
|
|
/*
|
|
* The only purpose of this handler is to make SIGCHLD
|
|
* interrupt the ISCSIDWAIT ioctl(2), so we can call
|
|
* wait_for_children().
|
|
*/
|
|
}
|
|
|
|
static void
|
|
register_signals(void)
|
|
{
|
|
struct sigaction sa;
|
|
int error;
|
|
|
|
bzero(&sa, sizeof(sa));
|
|
sa.sa_handler = sighup_handler;
|
|
sigfillset(&sa.sa_mask);
|
|
error = sigaction(SIGHUP, &sa, NULL);
|
|
if (error != 0)
|
|
log_err(1, "sigaction");
|
|
|
|
sa.sa_handler = sigterm_handler;
|
|
error = sigaction(SIGTERM, &sa, NULL);
|
|
if (error != 0)
|
|
log_err(1, "sigaction");
|
|
|
|
sa.sa_handler = sigterm_handler;
|
|
error = sigaction(SIGINT, &sa, NULL);
|
|
if (error != 0)
|
|
log_err(1, "sigaction");
|
|
|
|
sa.sa_handler = sigchld_handler;
|
|
error = sigaction(SIGCHLD, &sa, NULL);
|
|
if (error != 0)
|
|
log_err(1, "sigaction");
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct conf *oldconf, *newconf, *tmpconf;
|
|
struct isns *newns;
|
|
const char *config_path = DEFAULT_CONFIG_PATH;
|
|
int debug = 0, ch, error;
|
|
bool dont_daemonize = false;
|
|
|
|
while ((ch = getopt(argc, argv, "df:R")) != -1) {
|
|
switch (ch) {
|
|
case 'd':
|
|
dont_daemonize = true;
|
|
debug++;
|
|
break;
|
|
case 'f':
|
|
config_path = optarg;
|
|
break;
|
|
case 'R':
|
|
#ifndef ICL_KERNEL_PROXY
|
|
log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY "
|
|
"does not support iSER protocol");
|
|
#endif
|
|
proxy_mode = true;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
if (argc != 0)
|
|
usage();
|
|
|
|
log_init(debug);
|
|
kernel_init();
|
|
|
|
oldconf = conf_new_from_kernel();
|
|
newconf = conf_new_from_file(config_path, oldconf);
|
|
if (newconf == NULL)
|
|
log_errx(1, "configuration error; exiting");
|
|
if (debug > 0) {
|
|
oldconf->conf_debug = debug;
|
|
newconf->conf_debug = debug;
|
|
}
|
|
|
|
error = conf_apply(oldconf, newconf);
|
|
if (error != 0)
|
|
log_errx(1, "failed to apply configuration; exiting");
|
|
|
|
conf_delete(oldconf);
|
|
oldconf = NULL;
|
|
|
|
register_signals();
|
|
|
|
if (dont_daemonize == false) {
|
|
log_debugx("daemonizing");
|
|
if (daemon(0, 0) == -1) {
|
|
log_warn("cannot daemonize");
|
|
pidfile_remove(newconf->conf_pidfh);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Schedule iSNS update */
|
|
if (!TAILQ_EMPTY(&newconf->conf_isns))
|
|
set_timeout((newconf->conf_isns_period + 2) / 3, false);
|
|
|
|
for (;;) {
|
|
main_loop(newconf, dont_daemonize);
|
|
if (sighup_received) {
|
|
sighup_received = false;
|
|
log_debugx("received SIGHUP, reloading configuration");
|
|
tmpconf = conf_new_from_file(config_path, newconf);
|
|
if (tmpconf == NULL) {
|
|
log_warnx("configuration error, "
|
|
"continuing with old configuration");
|
|
} else {
|
|
if (debug > 0)
|
|
tmpconf->conf_debug = debug;
|
|
oldconf = newconf;
|
|
newconf = tmpconf;
|
|
error = conf_apply(oldconf, newconf);
|
|
if (error != 0)
|
|
log_warnx("failed to reload "
|
|
"configuration");
|
|
conf_delete(oldconf);
|
|
oldconf = NULL;
|
|
}
|
|
} else if (sigterm_received) {
|
|
log_debugx("exiting on signal; "
|
|
"reloading empty configuration");
|
|
|
|
log_debugx("removing CTL iSCSI ports "
|
|
"and terminating all connections");
|
|
|
|
oldconf = newconf;
|
|
newconf = conf_new();
|
|
if (debug > 0)
|
|
newconf->conf_debug = debug;
|
|
error = conf_apply(oldconf, newconf);
|
|
if (error != 0)
|
|
log_warnx("failed to apply configuration");
|
|
conf_delete(oldconf);
|
|
oldconf = NULL;
|
|
|
|
log_warnx("exiting on signal");
|
|
exit(0);
|
|
} else {
|
|
nchildren -= wait_for_children(false);
|
|
assert(nchildren >= 0);
|
|
if (timed_out()) {
|
|
set_timeout(0, false);
|
|
TAILQ_FOREACH(newns, &newconf->conf_isns, i_next)
|
|
isns_check(newns);
|
|
/* Schedule iSNS update */
|
|
if (!TAILQ_EMPTY(&newconf->conf_isns)) {
|
|
set_timeout((newconf->conf_isns_period
|
|
+ 2) / 3,
|
|
false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* NOTREACHED */
|
|
}
|