1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 The FreeBSD Foundation
5 *
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include <sys/types.h>
36 #include <sys/time.h>
37 #include <sys/ioctl.h>
38 #include <sys/param.h>
39 #include <sys/linker.h>
40 #include <sys/socket.h>
41 #include <sys/capsicum.h>
42 #include <sys/wait.h>
43 #include <netinet/in.h>
44 #include <assert.h>
45 #include <capsicum_helpers.h>
46 #include <errno.h>
47 #include <fcntl.h>
48 #include <libutil.h>
49 #include <netdb.h>
50 #include <signal.h>
51 #include <stdbool.h>
52 #include <stdint.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <unistd.h>
57
58 #include "iscsid.h"
59
60 static volatile bool sigalrm_received = false;
61
62 static int nchildren = 0;
63
64 static void
usage(void)65 usage(void)
66 {
67
68 fprintf(stderr, "usage: iscsid [-P pidfile][-d][-m maxproc][-t timeout]\n");
69 exit(1);
70 }
71
72 char *
checked_strdup(const char * s)73 checked_strdup(const char *s)
74 {
75 char *c;
76
77 c = strdup(s);
78 if (c == NULL)
79 log_err(1, "strdup");
80 return (c);
81 }
82
83 static void
resolve_addr(const struct connection * conn,const char * address,struct addrinfo ** ai,bool initiator_side)84 resolve_addr(const struct connection *conn, const char *address,
85 struct addrinfo **ai, bool initiator_side)
86 {
87 struct addrinfo hints;
88 char *arg, *addr, *ch;
89 const char *port;
90 int error, colons = 0;
91
92 arg = checked_strdup(address);
93
94 if (arg[0] == '\0') {
95 fail(conn, "empty address");
96 log_errx(1, "empty address");
97 }
98 if (arg[0] == '[') {
99 /*
100 * IPv6 address in square brackets, perhaps with port.
101 */
102 arg++;
103 addr = strsep(&arg, "]");
104 if (arg == NULL) {
105 fail(conn, "malformed address");
106 log_errx(1, "malformed address %s", address);
107 }
108 if (arg[0] == '\0') {
109 port = NULL;
110 } else if (arg[0] == ':') {
111 port = arg + 1;
112 } else {
113 fail(conn, "malformed address");
114 log_errx(1, "malformed address %s", address);
115 }
116 } else {
117 /*
118 * Either IPv6 address without brackets - and without
119 * a port - or IPv4 address. Just count the colons.
120 */
121 for (ch = arg; *ch != '\0'; ch++) {
122 if (*ch == ':')
123 colons++;
124 }
125 if (colons > 1) {
126 addr = arg;
127 port = NULL;
128 } else {
129 addr = strsep(&arg, ":");
130 if (arg == NULL)
131 port = NULL;
132 else
133 port = arg;
134 }
135 }
136
137 if (port == NULL && !initiator_side)
138 port = "3260";
139
140 memset(&hints, 0, sizeof(hints));
141 hints.ai_family = PF_UNSPEC;
142 hints.ai_socktype = SOCK_STREAM;
143 hints.ai_flags = AI_ADDRCONFIG | AI_NUMERICSERV;
144 if (initiator_side)
145 hints.ai_flags |= AI_PASSIVE;
146
147 error = getaddrinfo(addr, port, &hints, ai);
148 if (error != 0) {
149 fail(conn, gai_strerror(error));
150 log_errx(1, "getaddrinfo for %s failed: %s",
151 address, gai_strerror(error));
152 }
153
154 free(addr);
155 }
156
157 static struct connection *
connection_new(int iscsi_fd,const struct iscsi_daemon_request * request)158 connection_new(int iscsi_fd, const struct iscsi_daemon_request *request)
159 {
160 struct connection *conn;
161 struct iscsi_session_limits *isl;
162 struct addrinfo *from_ai, *to_ai;
163 const char *from_addr, *to_addr;
164 #ifdef ICL_KERNEL_PROXY
165 struct iscsi_daemon_connect idc;
166 #endif
167 int error, optval;
168
169 conn = calloc(1, sizeof(*conn));
170 if (conn == NULL)
171 log_err(1, "calloc");
172
173 /*
174 * Default values, from RFC 3720, section 12.
175 */
176 conn->conn_protocol_level = 0;
177 conn->conn_header_digest = CONN_DIGEST_NONE;
178 conn->conn_data_digest = CONN_DIGEST_NONE;
179 conn->conn_initial_r2t = true;
180 conn->conn_immediate_data = true;
181 conn->conn_max_recv_data_segment_length = 8192;
182 conn->conn_max_send_data_segment_length = 8192;
183 conn->conn_max_burst_length = 262144;
184 conn->conn_first_burst_length = 65536;
185 conn->conn_iscsi_fd = iscsi_fd;
186
187 conn->conn_session_id = request->idr_session_id;
188 memcpy(&conn->conn_conf, &request->idr_conf, sizeof(conn->conn_conf));
189 memcpy(&conn->conn_isid, &request->idr_isid, sizeof(conn->conn_isid));
190 conn->conn_tsih = request->idr_tsih;
191
192 /*
193 * Read the driver limits and provide reasonable defaults for the ones
194 * the driver doesn't care about. If a max_snd_dsl is not explicitly
195 * provided by the driver then we'll make sure both conn->max_snd_dsl
196 * and isl->max_snd_dsl are set to the rcv_dsl. This preserves historic
197 * behavior.
198 */
199 isl = &conn->conn_limits;
200 memcpy(isl, &request->idr_limits, sizeof(*isl));
201 if (isl->isl_max_recv_data_segment_length == 0)
202 isl->isl_max_recv_data_segment_length = (1 << 24) - 1;
203 if (isl->isl_max_send_data_segment_length == 0)
204 isl->isl_max_send_data_segment_length =
205 isl->isl_max_recv_data_segment_length;
206 if (isl->isl_max_burst_length == 0)
207 isl->isl_max_burst_length = (1 << 24) - 1;
208 if (isl->isl_first_burst_length == 0)
209 isl->isl_first_burst_length = (1 << 24) - 1;
210 if (isl->isl_first_burst_length > isl->isl_max_burst_length)
211 isl->isl_first_burst_length = isl->isl_max_burst_length;
212
213 /*
214 * Limit default send length in case it won't be negotiated.
215 * We can't do it for other limits, since they may affect both
216 * sender and receiver operation, and we must obey defaults.
217 */
218 if (conn->conn_max_send_data_segment_length >
219 isl->isl_max_send_data_segment_length) {
220 conn->conn_max_send_data_segment_length =
221 isl->isl_max_send_data_segment_length;
222 }
223
224 from_addr = conn->conn_conf.isc_initiator_addr;
225 to_addr = conn->conn_conf.isc_target_addr;
226
227 if (from_addr[0] != '\0')
228 resolve_addr(conn, from_addr, &from_ai, true);
229 else
230 from_ai = NULL;
231
232 resolve_addr(conn, to_addr, &to_ai, false);
233
234 #ifdef ICL_KERNEL_PROXY
235 if (conn->conn_conf.isc_iser) {
236 memset(&idc, 0, sizeof(idc));
237 idc.idc_session_id = conn->conn_session_id;
238 if (conn->conn_conf.isc_iser)
239 idc.idc_iser = 1;
240 idc.idc_domain = to_ai->ai_family;
241 idc.idc_socktype = to_ai->ai_socktype;
242 idc.idc_protocol = to_ai->ai_protocol;
243 if (from_ai != NULL) {
244 idc.idc_from_addr = from_ai->ai_addr;
245 idc.idc_from_addrlen = from_ai->ai_addrlen;
246 }
247 idc.idc_to_addr = to_ai->ai_addr;
248 idc.idc_to_addrlen = to_ai->ai_addrlen;
249
250 log_debugx("connecting to %s using ICL kernel proxy", to_addr);
251 error = ioctl(iscsi_fd, ISCSIDCONNECT, &idc);
252 if (error != 0) {
253 fail(conn, strerror(errno));
254 log_err(1, "failed to connect to %s "
255 "using ICL kernel proxy: ISCSIDCONNECT", to_addr);
256 }
257
258 if (from_ai != NULL)
259 freeaddrinfo(from_ai);
260 freeaddrinfo(to_ai);
261
262 return (conn);
263 }
264 #endif /* ICL_KERNEL_PROXY */
265
266 if (conn->conn_conf.isc_iser) {
267 fail(conn, "iSER not supported");
268 log_errx(1, "iscsid(8) compiled without ICL_KERNEL_PROXY "
269 "does not support iSER");
270 }
271
272 conn->conn_socket = socket(to_ai->ai_family, to_ai->ai_socktype,
273 to_ai->ai_protocol);
274 if (conn->conn_socket < 0) {
275 fail(conn, strerror(errno));
276 log_err(1, "failed to create socket for %s", from_addr);
277 }
278 optval = SOCKBUF_SIZE;
279 if (setsockopt(conn->conn_socket, SOL_SOCKET, SO_RCVBUF,
280 &optval, sizeof(optval)) == -1)
281 log_warn("setsockopt(SO_RCVBUF) failed");
282 optval = SOCKBUF_SIZE;
283 if (setsockopt(conn->conn_socket, SOL_SOCKET, SO_SNDBUF,
284 &optval, sizeof(optval)) == -1)
285 log_warn("setsockopt(SO_SNDBUF) failed");
286 optval = 1;
287 if (setsockopt(conn->conn_socket, SOL_SOCKET, SO_NO_DDP,
288 &optval, sizeof(optval)) == -1)
289 log_warn("setsockopt(SO_NO_DDP) failed");
290 if (conn->conn_conf.isc_dscp != -1) {
291 int tos = conn->conn_conf.isc_dscp << 2;
292 if (to_ai->ai_family == AF_INET) {
293 if (setsockopt(conn->conn_socket,
294 IPPROTO_IP, IP_TOS,
295 &tos, sizeof(tos)) == -1)
296 log_warn("setsockopt(IP_TOS) "
297 "failed for %s",
298 from_addr);
299 } else
300 if (to_ai->ai_family == AF_INET6) {
301 if (setsockopt(conn->conn_socket,
302 IPPROTO_IPV6, IPV6_TCLASS,
303 &tos, sizeof(tos)) == -1)
304 log_warn("setsockopt(IPV6_TCLASS) "
305 "failed for %s",
306 from_addr);
307 }
308 }
309 if (conn->conn_conf.isc_pcp != -1) {
310 int pcp = conn->conn_conf.isc_pcp;
311 if (to_ai->ai_family == AF_INET) {
312 if (setsockopt(conn->conn_socket,
313 IPPROTO_IP, IP_VLAN_PCP,
314 &pcp, sizeof(pcp)) == -1)
315 log_warn("setsockopt(IP_VLAN_PCP) "
316 "failed for %s",
317 from_addr);
318 } else
319 if (to_ai->ai_family == AF_INET6) {
320 if (setsockopt(conn->conn_socket,
321 IPPROTO_IPV6, IPV6_VLAN_PCP,
322 &pcp, sizeof(pcp)) == -1)
323 log_warn("setsockopt(IPV6_VLAN_PCP) "
324 "failed for %s",
325 from_addr);
326 }
327 }
328 if (from_ai != NULL) {
329 error = bind(conn->conn_socket, from_ai->ai_addr,
330 from_ai->ai_addrlen);
331 if (error != 0) {
332 fail(conn, strerror(errno));
333 log_err(1, "failed to bind to %s", from_addr);
334 }
335 }
336 log_debugx("connecting to %s", to_addr);
337 error = connect(conn->conn_socket, to_ai->ai_addr, to_ai->ai_addrlen);
338 if (error != 0) {
339 fail(conn, strerror(errno));
340 log_err(1, "failed to connect to %s", to_addr);
341 }
342
343 if (from_ai != NULL)
344 freeaddrinfo(from_ai);
345 freeaddrinfo(to_ai);
346
347 return (conn);
348 }
349
350 static void
handoff(struct connection * conn)351 handoff(struct connection *conn)
352 {
353 struct iscsi_daemon_handoff idh;
354 int error;
355
356 log_debugx("handing off connection to the kernel");
357
358 memset(&idh, 0, sizeof(idh));
359 idh.idh_session_id = conn->conn_session_id;
360 idh.idh_socket = conn->conn_socket;
361 strlcpy(idh.idh_target_alias, conn->conn_target_alias,
362 sizeof(idh.idh_target_alias));
363 idh.idh_tsih = conn->conn_tsih;
364 idh.idh_statsn = conn->conn_statsn;
365 idh.idh_protocol_level = conn->conn_protocol_level;
366 idh.idh_header_digest = conn->conn_header_digest;
367 idh.idh_data_digest = conn->conn_data_digest;
368 idh.idh_initial_r2t = conn->conn_initial_r2t;
369 idh.idh_immediate_data = conn->conn_immediate_data;
370 idh.idh_max_recv_data_segment_length =
371 conn->conn_max_recv_data_segment_length;
372 idh.idh_max_send_data_segment_length =
373 conn->conn_max_send_data_segment_length;
374 idh.idh_max_burst_length = conn->conn_max_burst_length;
375 idh.idh_first_burst_length = conn->conn_first_burst_length;
376
377 error = ioctl(conn->conn_iscsi_fd, ISCSIDHANDOFF, &idh);
378 if (error != 0)
379 log_err(1, "ISCSIDHANDOFF");
380 }
381
382 void
fail(const struct connection * conn,const char * reason)383 fail(const struct connection *conn, const char *reason)
384 {
385 struct iscsi_daemon_fail idf;
386 int error, saved_errno;
387
388 saved_errno = errno;
389
390 memset(&idf, 0, sizeof(idf));
391 idf.idf_session_id = conn->conn_session_id;
392 strlcpy(idf.idf_reason, reason, sizeof(idf.idf_reason));
393
394 error = ioctl(conn->conn_iscsi_fd, ISCSIDFAIL, &idf);
395 if (error != 0)
396 log_err(1, "ISCSIDFAIL");
397
398 errno = saved_errno;
399 }
400
401 /*
402 * XXX: I CANT INTO LATIN
403 */
404 static void
capsicate(struct connection * conn)405 capsicate(struct connection *conn)
406 {
407 cap_rights_t rights;
408 #ifdef ICL_KERNEL_PROXY
409 const unsigned long cmds[] = { ISCSIDCONNECT, ISCSIDSEND, ISCSIDRECEIVE,
410 ISCSIDHANDOFF, ISCSIDFAIL, ISCSISADD, ISCSISREMOVE, ISCSISMODIFY };
411 #else
412 const unsigned long cmds[] = { ISCSIDHANDOFF, ISCSIDFAIL, ISCSISADD,
413 ISCSISREMOVE, ISCSISMODIFY };
414 #endif
415
416 cap_rights_init(&rights, CAP_IOCTL);
417 if (caph_rights_limit(conn->conn_iscsi_fd, &rights) < 0)
418 log_err(1, "cap_rights_limit");
419
420 if (caph_ioctls_limit(conn->conn_iscsi_fd, cmds, nitems(cmds)) < 0)
421 log_err(1, "cap_ioctls_limit");
422
423 if (caph_enter() != 0)
424 log_err(1, "cap_enter");
425
426 if (cap_sandboxed())
427 log_debugx("Capsicum capability mode enabled");
428 else
429 log_warnx("Capsicum capability mode not supported");
430 }
431
432 bool
timed_out(void)433 timed_out(void)
434 {
435
436 return (sigalrm_received);
437 }
438
439 static void
sigalrm_handler(int dummy __unused)440 sigalrm_handler(int dummy __unused)
441 {
442 /*
443 * It would be easiest to just log an error and exit. We can't
444 * do this, though, because log_errx() is not signal safe, since
445 * it calls syslog(3). Instead, set a flag checked by pdu_send()
446 * and pdu_receive(), to call log_errx() there. Should they fail
447 * to notice, we'll exit here one second later.
448 */
449 if (sigalrm_received) {
450 /*
451 * Oh well. Just give up and quit.
452 */
453 _exit(2);
454 }
455
456 sigalrm_received = true;
457 }
458
459 static void
set_timeout(int timeout)460 set_timeout(int timeout)
461 {
462 struct sigaction sa;
463 struct itimerval itv;
464 int error;
465
466 if (timeout <= 0) {
467 log_debugx("session timeout disabled");
468 return;
469 }
470
471 bzero(&sa, sizeof(sa));
472 sa.sa_handler = sigalrm_handler;
473 sigfillset(&sa.sa_mask);
474 error = sigaction(SIGALRM, &sa, NULL);
475 if (error != 0)
476 log_err(1, "sigaction");
477
478 /*
479 * First SIGALRM will arive after conf_timeout seconds.
480 * If we do nothing, another one will arrive a second later.
481 */
482 bzero(&itv, sizeof(itv));
483 itv.it_interval.tv_sec = 1;
484 itv.it_value.tv_sec = timeout;
485
486 log_debugx("setting session timeout to %d seconds",
487 timeout);
488 error = setitimer(ITIMER_REAL, &itv, NULL);
489 if (error != 0)
490 log_err(1, "setitimer");
491 }
492
493 static void
sigchld_handler(int dummy __unused)494 sigchld_handler(int dummy __unused)
495 {
496
497 /*
498 * The only purpose of this handler is to make SIGCHLD
499 * interrupt the ISCSIDWAIT ioctl(2), so we can call
500 * wait_for_children().
501 */
502 }
503
504 static void
register_sigchld(void)505 register_sigchld(void)
506 {
507 struct sigaction sa;
508 int error;
509
510 bzero(&sa, sizeof(sa));
511 sa.sa_handler = sigchld_handler;
512 sigfillset(&sa.sa_mask);
513 error = sigaction(SIGCHLD, &sa, NULL);
514 if (error != 0)
515 log_err(1, "sigaction");
516
517 }
518
519 static void
handle_request(int iscsi_fd,const struct iscsi_daemon_request * request,int timeout)520 handle_request(int iscsi_fd, const struct iscsi_daemon_request *request, int timeout)
521 {
522 struct connection *conn;
523
524 log_set_peer_addr(request->idr_conf.isc_target_addr);
525 if (request->idr_conf.isc_target[0] != '\0') {
526 log_set_peer_name(request->idr_conf.isc_target);
527 setproctitle("%s (%s)", request->idr_conf.isc_target_addr, request->idr_conf.isc_target);
528 } else {
529 setproctitle("%s", request->idr_conf.isc_target_addr);
530 }
531
532 conn = connection_new(iscsi_fd, request);
533 set_timeout(timeout);
534 capsicate(conn);
535 login(conn);
536 if (conn->conn_conf.isc_discovery != 0)
537 discovery(conn);
538 else
539 handoff(conn);
540
541 log_debugx("nothing more to do; exiting");
542 exit (0);
543 }
544
545 static int
wait_for_children(bool block)546 wait_for_children(bool block)
547 {
548 pid_t pid;
549 int status;
550 int num = 0;
551
552 for (;;) {
553 /*
554 * If "block" is true, wait for at least one process.
555 */
556 if (block && num == 0)
557 pid = wait4(-1, &status, 0, NULL);
558 else
559 pid = wait4(-1, &status, WNOHANG, NULL);
560 if (pid <= 0)
561 break;
562 if (WIFSIGNALED(status)) {
563 log_warnx("child process %d terminated with signal %d",
564 pid, WTERMSIG(status));
565 } else if (WEXITSTATUS(status) != 0) {
566 log_warnx("child process %d terminated with exit status %d",
567 pid, WEXITSTATUS(status));
568 } else {
569 log_debugx("child process %d terminated gracefully", pid);
570 }
571 num++;
572 }
573
574 return (num);
575 }
576
577 int
main(int argc,char ** argv)578 main(int argc, char **argv)
579 {
580 int ch, debug = 0, error, iscsi_fd, maxproc = 30, retval, saved_errno,
581 timeout = 60;
582 bool dont_daemonize = false;
583 struct pidfh *pidfh;
584 pid_t pid, otherpid;
585 const char *pidfile_path = DEFAULT_PIDFILE;
586 struct iscsi_daemon_request request;
587
588 while ((ch = getopt(argc, argv, "P:dl:m:t:")) != -1) {
589 switch (ch) {
590 case 'P':
591 pidfile_path = optarg;
592 break;
593 case 'd':
594 dont_daemonize = true;
595 debug++;
596 break;
597 case 'l':
598 debug = atoi(optarg);
599 break;
600 case 'm':
601 maxproc = atoi(optarg);
602 break;
603 case 't':
604 timeout = atoi(optarg);
605 break;
606 case '?':
607 default:
608 usage();
609 }
610 }
611 argc -= optind;
612 if (argc != 0)
613 usage();
614
615 log_init(debug);
616
617 pidfh = pidfile_open(pidfile_path, 0600, &otherpid);
618 if (pidfh == NULL) {
619 if (errno == EEXIST)
620 log_errx(1, "daemon already running, pid: %jd.",
621 (intmax_t)otherpid);
622 log_err(1, "cannot open or create pidfile \"%s\"",
623 pidfile_path);
624 }
625
626 iscsi_fd = open(ISCSI_PATH, O_RDWR);
627 if (iscsi_fd < 0 && errno == ENOENT) {
628 saved_errno = errno;
629 retval = kldload("iscsi");
630 if (retval != -1)
631 iscsi_fd = open(ISCSI_PATH, O_RDWR);
632 else
633 errno = saved_errno;
634 }
635 if (iscsi_fd < 0)
636 log_err(1, "failed to open %s", ISCSI_PATH);
637
638 if (dont_daemonize == false) {
639 if (daemon(0, 0) == -1) {
640 log_warn("cannot daemonize");
641 pidfile_remove(pidfh);
642 exit(1);
643 }
644 }
645
646 pidfile_write(pidfh);
647
648 register_sigchld();
649
650 for (;;) {
651 log_debugx("waiting for request from the kernel");
652
653 memset(&request, 0, sizeof(request));
654 error = ioctl(iscsi_fd, ISCSIDWAIT, &request);
655 if (error != 0) {
656 if (errno == EINTR) {
657 nchildren -= wait_for_children(false);
658 assert(nchildren >= 0);
659 continue;
660 }
661
662 log_err(1, "ISCSIDWAIT");
663 }
664
665 if (dont_daemonize) {
666 log_debugx("not forking due to -d flag; "
667 "will exit after servicing a single request");
668 } else {
669 nchildren -= wait_for_children(false);
670 assert(nchildren >= 0);
671
672 while (maxproc > 0 && nchildren >= maxproc) {
673 log_debugx("maxproc limit of %d child processes hit; "
674 "waiting for child process to exit", maxproc);
675 nchildren -= wait_for_children(true);
676 assert(nchildren >= 0);
677 }
678 log_debugx("incoming connection; forking child process #%d",
679 nchildren);
680 nchildren++;
681
682 pid = fork();
683 if (pid < 0)
684 log_err(1, "fork");
685 if (pid > 0)
686 continue;
687 }
688
689 pidfile_close(pidfh);
690 handle_request(iscsi_fd, &request, timeout);
691 }
692
693 return (0);
694 }
695