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server: disable pdu length check for now
[fio.git] / server.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <sys/poll.h>
8#include <sys/types.h>
9#include <sys/wait.h>
10#include <sys/socket.h>
11#include <sys/stat.h>
12#include <sys/un.h>
13#include <sys/uio.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19#ifdef CONFIG_ZLIB
20#include <zlib.h>
21#endif
22
23#include "fio.h"
24#include "options.h"
25#include "server.h"
26#include "crc/crc16.h"
27#include "lib/ieee754.h"
28#include "verify.h"
29#include "smalloc.h"
30
31int fio_net_port = FIO_NET_PORT;
32
33int exit_backend = 0;
34
35enum {
36 SK_F_FREE = 1,
37 SK_F_COPY = 2,
38 SK_F_SIMPLE = 4,
39 SK_F_VEC = 8,
40 SK_F_INLINE = 16,
41};
42
43struct sk_entry {
44 struct flist_head list; /* link on sk_out->list */
45 int flags; /* SK_F_* */
46 int opcode; /* Actual command fields */
47 void *buf;
48 off_t size;
49 uint64_t tag;
50 struct flist_head next; /* Other sk_entry's, if linked command */
51};
52
53struct sk_out {
54 unsigned int refs; /* frees sk_out when it drops to zero.
55 * protected by below ->lock */
56
57 int sk; /* socket fd to talk to client */
58 struct fio_mutex lock; /* protects ref and below list */
59 struct flist_head list; /* list of pending transmit work */
60 struct fio_mutex wait; /* wake backend when items added to list */
61 struct fio_mutex xmit; /* held while sending data */
62};
63
64static char *fio_server_arg;
65static char *bind_sock;
66static struct sockaddr_in saddr_in;
67static struct sockaddr_in6 saddr_in6;
68static int use_ipv6;
69#ifdef CONFIG_ZLIB
70static unsigned int has_zlib = 1;
71#else
72static unsigned int has_zlib = 0;
73#endif
74static unsigned int use_zlib;
75static char me[128];
76
77static pthread_key_t sk_out_key;
78
79struct fio_fork_item {
80 struct flist_head list;
81 int exitval;
82 int signal;
83 int exited;
84 pid_t pid;
85};
86
87struct cmd_reply {
88 struct fio_mutex lock;
89 void *data;
90 size_t size;
91 int error;
92};
93
94static const char *fio_server_ops[FIO_NET_CMD_NR] = {
95 "",
96 "QUIT",
97 "EXIT",
98 "JOB",
99 "JOBLINE",
100 "TEXT",
101 "TS",
102 "GS",
103 "SEND_ETA",
104 "ETA",
105 "PROBE",
106 "START",
107 "STOP",
108 "DISK_UTIL",
109 "SERVER_START",
110 "ADD_JOB",
111 "RUN",
112 "IOLOG",
113 "UPDATE_JOB",
114 "LOAD_FILE",
115 "VTRIGGER",
116 "SENDFILE",
117};
118
119static void sk_lock(struct sk_out *sk_out)
120{
121 fio_mutex_down(&sk_out->lock);
122}
123
124static void sk_unlock(struct sk_out *sk_out)
125{
126 fio_mutex_up(&sk_out->lock);
127}
128
129void sk_out_assign(struct sk_out *sk_out)
130{
131 if (!sk_out)
132 return;
133
134 sk_lock(sk_out);
135 sk_out->refs++;
136 sk_unlock(sk_out);
137 pthread_setspecific(sk_out_key, sk_out);
138}
139
140static void sk_out_free(struct sk_out *sk_out)
141{
142 __fio_mutex_remove(&sk_out->lock);
143 __fio_mutex_remove(&sk_out->wait);
144 __fio_mutex_remove(&sk_out->xmit);
145 sfree(sk_out);
146}
147
148static int __sk_out_drop(struct sk_out *sk_out)
149{
150 if (sk_out) {
151 int refs;
152
153 sk_lock(sk_out);
154 assert(sk_out->refs != 0);
155 refs = --sk_out->refs;
156 sk_unlock(sk_out);
157
158 if (!refs) {
159 sk_out_free(sk_out);
160 pthread_setspecific(sk_out_key, NULL);
161 return 0;
162 }
163 }
164
165 return 1;
166}
167
168void sk_out_drop(void)
169{
170 struct sk_out *sk_out;
171
172 sk_out = pthread_getspecific(sk_out_key);
173 __sk_out_drop(sk_out);
174}
175
176static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
177 uint32_t pdu_len, uint64_t tag)
178{
179 memset(cmd, 0, sizeof(*cmd));
180
181 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
182 cmd->opcode = cpu_to_le16(opcode);
183 cmd->tag = cpu_to_le64(tag);
184 cmd->pdu_len = cpu_to_le32(pdu_len);
185}
186
187
188static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
189 const void *pdu, uint32_t pdu_len, uint64_t tag)
190{
191 __fio_init_net_cmd(cmd, opcode, pdu_len, tag);
192
193 if (pdu)
194 memcpy(&cmd->payload, pdu, pdu_len);
195}
196
197const char *fio_server_op(unsigned int op)
198{
199 static char buf[32];
200
201 if (op < FIO_NET_CMD_NR)
202 return fio_server_ops[op];
203
204 sprintf(buf, "UNKNOWN/%d", op);
205 return buf;
206}
207
208static ssize_t iov_total_len(const struct iovec *iov, int count)
209{
210 ssize_t ret = 0;
211
212 while (count--) {
213 ret += iov->iov_len;
214 iov++;
215 }
216
217 return ret;
218}
219
220static int fio_sendv_data(int sk, struct iovec *iov, int count)
221{
222 ssize_t total_len = iov_total_len(iov, count);
223 ssize_t ret;
224
225 do {
226 ret = writev(sk, iov, count);
227 if (ret > 0) {
228 total_len -= ret;
229 if (!total_len)
230 break;
231
232 while (ret) {
233 if (ret >= iov->iov_len) {
234 ret -= iov->iov_len;
235 iov++;
236 continue;
237 }
238 iov->iov_base += ret;
239 iov->iov_len -= ret;
240 ret = 0;
241 }
242 } else if (!ret)
243 break;
244 else if (errno == EAGAIN || errno == EINTR)
245 continue;
246 else
247 break;
248 } while (!exit_backend);
249
250 if (!total_len)
251 return 0;
252
253 return 1;
254}
255
256static int fio_send_data(int sk, const void *p, unsigned int len)
257{
258 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
259
260 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
261
262 return fio_sendv_data(sk, &iov, 1);
263}
264
265static int fio_recv_data(int sk, void *p, unsigned int len, bool wait)
266{
267 int flags;
268
269 if (wait)
270 flags = MSG_WAITALL;
271 else
272 flags = OS_MSG_DONTWAIT;
273
274 do {
275 int ret = recv(sk, p, len, flags);
276
277 if (ret > 0) {
278 len -= ret;
279 if (!len)
280 break;
281 p += ret;
282 continue;
283 } else if (!ret)
284 break;
285 else if (errno == EAGAIN || errno == EINTR) {
286 if (wait)
287 continue;
288 break;
289 } else
290 break;
291 } while (!exit_backend);
292
293 if (!len)
294 return 0;
295
296 return -1;
297}
298
299static int verify_convert_cmd(struct fio_net_cmd *cmd)
300{
301 uint16_t crc;
302
303 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
304 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
305
306 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
307 if (crc != cmd->cmd_crc16) {
308 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
309 cmd->cmd_crc16, crc);
310 return 1;
311 }
312
313 cmd->version = le16_to_cpu(cmd->version);
314 cmd->opcode = le16_to_cpu(cmd->opcode);
315 cmd->flags = le32_to_cpu(cmd->flags);
316 cmd->tag = le64_to_cpu(cmd->tag);
317 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
318
319 switch (cmd->version) {
320 case FIO_SERVER_VER:
321 break;
322 default:
323 log_err("fio: bad server cmd version %d\n", cmd->version);
324 return 1;
325 }
326
327 return 0;
328}
329
330/*
331 * Read (and defragment, if necessary) incoming commands
332 */
333struct fio_net_cmd *fio_net_recv_cmd(int sk, bool wait)
334{
335 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
336 size_t cmd_size = 0, pdu_offset = 0;
337 uint16_t crc;
338 int ret, first = 1;
339 void *pdu = NULL;
340
341 do {
342 ret = fio_recv_data(sk, &cmd, sizeof(cmd), wait);
343 if (ret)
344 break;
345
346 /* We have a command, verify it and swap if need be */
347 ret = verify_convert_cmd(&cmd);
348 if (ret)
349 break;
350
351 if (first) {
352 /* if this is text, add room for \0 at the end */
353 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
354 assert(!cmdret);
355 } else
356 cmd_size += cmd.pdu_len;
357
358 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
359 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
360 ret = 1;
361 break;
362 }
363
364 tmp = realloc(cmdret, cmd_size);
365 if (!tmp) {
366 log_err("fio: server failed allocating cmd\n");
367 ret = 1;
368 break;
369 }
370 cmdret = tmp;
371
372 if (first)
373 memcpy(cmdret, &cmd, sizeof(cmd));
374 else if (cmdret->opcode != cmd.opcode) {
375 log_err("fio: fragment opcode mismatch (%d != %d)\n",
376 cmdret->opcode, cmd.opcode);
377 ret = 1;
378 break;
379 }
380
381 if (!cmd.pdu_len)
382 break;
383
384 /* There's payload, get it */
385 pdu = (void *) cmdret->payload + pdu_offset;
386 ret = fio_recv_data(sk, pdu, cmd.pdu_len, wait);
387 if (ret)
388 break;
389
390 /* Verify payload crc */
391 crc = fio_crc16(pdu, cmd.pdu_len);
392 if (crc != cmd.pdu_crc16) {
393 log_err("fio: server bad crc on payload ");
394 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
395 ret = 1;
396 break;
397 }
398
399 pdu_offset += cmd.pdu_len;
400 if (!first)
401 cmdret->pdu_len += cmd.pdu_len;
402 first = 0;
403 } while (cmd.flags & FIO_NET_CMD_F_MORE);
404
405 if (ret) {
406 free(cmdret);
407 cmdret = NULL;
408 } else if (cmdret) {
409 /* zero-terminate text input */
410 if (cmdret->pdu_len) {
411 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
412 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
413 char *buf = (char *) __pdu->buf;
414
415 buf[__pdu->buf_len] = '\0';
416 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
417 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
418 char *buf = (char *) __pdu->buf;
419 int len = le32_to_cpu(__pdu->buf_len);
420
421 buf[len] = '\0';
422 }
423 }
424
425 /* frag flag is internal */
426 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
427 }
428
429 return cmdret;
430}
431
432static void add_reply(uint64_t tag, struct flist_head *list)
433{
434 struct fio_net_cmd_reply *reply;
435
436 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
437 flist_add_tail(&reply->list, list);
438}
439
440static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
441{
442 struct fio_net_cmd_reply *reply;
443
444 reply = calloc(1, sizeof(*reply));
445 INIT_FLIST_HEAD(&reply->list);
446 fio_gettime(&reply->tv, NULL);
447 reply->saved_tag = tag;
448 reply->opcode = opcode;
449
450 return (uintptr_t) reply;
451}
452
453static void free_reply(uint64_t tag)
454{
455 struct fio_net_cmd_reply *reply;
456
457 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
458 free(reply);
459}
460
461static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
462{
463 uint32_t pdu_len;
464
465 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
466
467 pdu_len = le32_to_cpu(cmd->pdu_len);
468 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
469}
470
471static void fio_net_cmd_crc(struct fio_net_cmd *cmd)
472{
473 fio_net_cmd_crc_pdu(cmd, cmd->payload);
474}
475
476int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
477 uint64_t *tagptr, struct flist_head *list)
478{
479 struct fio_net_cmd *cmd = NULL;
480 size_t this_len, cur_len = 0;
481 uint64_t tag;
482 int ret;
483
484 if (list) {
485 assert(tagptr);
486 tag = *tagptr = alloc_reply(*tagptr, opcode);
487 } else
488 tag = tagptr ? *tagptr : 0;
489
490 do {
491 this_len = size;
492 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
493 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
494
495 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
496 if (cmd)
497 free(cmd);
498
499 cur_len = sizeof(*cmd) + this_len;
500 cmd = malloc(cur_len);
501 }
502
503 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
504
505 if (this_len < size)
506 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
507
508 fio_net_cmd_crc(cmd);
509
510 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
511 size -= this_len;
512 buf += this_len;
513 } while (!ret && size);
514
515 if (list) {
516 if (ret)
517 free_reply(tag);
518 else
519 add_reply(tag, list);
520 }
521
522 if (cmd)
523 free(cmd);
524
525 return ret;
526}
527
528static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf,
529 size_t size, uint64_t *tagptr,
530 int flags)
531{
532 struct sk_entry *entry;
533
534 entry = smalloc(sizeof(*entry));
535 INIT_FLIST_HEAD(&entry->next);
536 entry->opcode = opcode;
537 if (flags & SK_F_COPY) {
538 entry->buf = smalloc(size);
539 memcpy(entry->buf, buf, size);
540 } else
541 entry->buf = buf;
542
543 entry->size = size;
544 if (tagptr)
545 entry->tag = *tagptr;
546 else
547 entry->tag = 0;
548 entry->flags = flags;
549 return entry;
550}
551
552static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry);
553
554static void fio_net_queue_entry(struct sk_entry *entry)
555{
556 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
557
558 if (entry->flags & SK_F_INLINE)
559 handle_sk_entry(sk_out, entry);
560 else {
561 sk_lock(sk_out);
562 flist_add_tail(&entry->list, &sk_out->list);
563 sk_unlock(sk_out);
564
565 fio_mutex_up(&sk_out->wait);
566 }
567}
568
569static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
570 uint64_t *tagptr, int flags)
571{
572 struct sk_entry *entry;
573
574 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
575 fio_net_queue_entry(entry);
576 return 0;
577}
578
579static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
580{
581 struct fio_net_cmd cmd;
582
583 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
584 fio_net_cmd_crc(&cmd);
585
586 return fio_send_data(sk, &cmd, sizeof(cmd));
587}
588
589/*
590 * If 'list' is non-NULL, then allocate and store the sent command for
591 * later verification.
592 */
593int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
594 struct flist_head *list)
595{
596 int ret;
597
598 if (list)
599 tag = alloc_reply(tag, opcode);
600
601 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
602 if (ret) {
603 if (list)
604 free_reply(tag);
605
606 return ret;
607 }
608
609 if (list)
610 add_reply(tag, list);
611
612 return 0;
613}
614
615static int fio_net_queue_quit(void)
616{
617 dprint(FD_NET, "server: sending quit\n");
618
619 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, 0, SK_F_SIMPLE);
620}
621
622int fio_net_send_quit(int sk)
623{
624 dprint(FD_NET, "server: sending quit\n");
625
626 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
627}
628
629static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
630{
631 struct cmd_end_pdu epdu;
632 uint64_t tag = 0;
633
634 if (cmd)
635 tag = cmd->tag;
636
637 epdu.error = __cpu_to_le32(error);
638 epdu.signal = __cpu_to_le32(signal);
639 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
640}
641
642static int fio_net_queue_stop(int error, int signal)
643{
644 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
645 return fio_net_send_ack(NULL, error, signal);
646}
647
648static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
649{
650 struct fio_fork_item *ffi;
651
652 ffi = malloc(sizeof(*ffi));
653 ffi->exitval = 0;
654 ffi->signal = 0;
655 ffi->exited = 0;
656 ffi->pid = pid;
657 flist_add_tail(&ffi->list, list);
658}
659
660static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
661{
662 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
663 fio_server_add_fork_item(pid, conn_list);
664}
665
666static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
667{
668 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
669 fio_server_add_fork_item(pid, job_list);
670}
671
672static void fio_server_check_fork_item(struct fio_fork_item *ffi)
673{
674 int ret, status;
675
676 ret = waitpid(ffi->pid, &status, WNOHANG);
677 if (ret < 0) {
678 if (errno == ECHILD) {
679 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
680 ffi->exited = 1;
681 } else
682 log_err("fio: waitpid: %s\n", strerror(errno));
683 } else if (ret == ffi->pid) {
684 if (WIFSIGNALED(status)) {
685 ffi->signal = WTERMSIG(status);
686 ffi->exited = 1;
687 }
688 if (WIFEXITED(status)) {
689 if (WEXITSTATUS(status))
690 ffi->exitval = WEXITSTATUS(status);
691 ffi->exited = 1;
692 }
693 }
694}
695
696static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
697{
698 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
699
700 /*
701 * Fold STOP and QUIT...
702 */
703 if (stop) {
704 fio_net_queue_stop(ffi->exitval, ffi->signal);
705 fio_net_queue_quit();
706 }
707
708 flist_del(&ffi->list);
709 free(ffi);
710}
711
712static void fio_server_check_fork_items(struct flist_head *list, bool stop)
713{
714 struct flist_head *entry, *tmp;
715 struct fio_fork_item *ffi;
716
717 flist_for_each_safe(entry, tmp, list) {
718 ffi = flist_entry(entry, struct fio_fork_item, list);
719
720 fio_server_check_fork_item(ffi);
721
722 if (ffi->exited)
723 fio_server_fork_item_done(ffi, stop);
724 }
725}
726
727static void fio_server_check_jobs(struct flist_head *job_list)
728{
729 fio_server_check_fork_items(job_list, true);
730}
731
732static void fio_server_check_conns(struct flist_head *conn_list)
733{
734 fio_server_check_fork_items(conn_list, false);
735}
736
737static int handle_load_file_cmd(struct fio_net_cmd *cmd)
738{
739 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
740 void *file_name = pdu->file;
741 struct cmd_start_pdu spdu;
742
743 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
744
745 pdu->name_len = le16_to_cpu(pdu->name_len);
746 pdu->client_type = le16_to_cpu(pdu->client_type);
747
748 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
749 fio_net_queue_quit();
750 return -1;
751 }
752
753 spdu.jobs = cpu_to_le32(thread_number);
754 spdu.stat_outputs = cpu_to_le32(stat_number);
755 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
756 return 0;
757}
758
759static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
760 struct fio_net_cmd *cmd)
761{
762 pid_t pid;
763 int ret;
764
765 sk_out_assign(sk_out);
766
767 fio_time_init();
768 set_genesis_time();
769
770 pid = fork();
771 if (pid) {
772 fio_server_add_job_pid(job_list, pid);
773 return 0;
774 }
775
776 ret = fio_backend(sk_out);
777 free_threads_shm();
778 sk_out_drop();
779 _exit(ret);
780}
781
782static int handle_job_cmd(struct fio_net_cmd *cmd)
783{
784 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
785 void *buf = pdu->buf;
786 struct cmd_start_pdu spdu;
787
788 pdu->buf_len = le32_to_cpu(pdu->buf_len);
789 pdu->client_type = le32_to_cpu(pdu->client_type);
790
791 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
792 fio_net_queue_quit();
793 return -1;
794 }
795
796 spdu.jobs = cpu_to_le32(thread_number);
797 spdu.stat_outputs = cpu_to_le32(stat_number);
798
799 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
800 return 0;
801}
802
803static int handle_jobline_cmd(struct fio_net_cmd *cmd)
804{
805 void *pdu = cmd->payload;
806 struct cmd_single_line_pdu *cslp;
807 struct cmd_line_pdu *clp;
808 unsigned long offset;
809 struct cmd_start_pdu spdu;
810 char **argv;
811 int i;
812
813 clp = pdu;
814 clp->lines = le16_to_cpu(clp->lines);
815 clp->client_type = le16_to_cpu(clp->client_type);
816 argv = malloc(clp->lines * sizeof(char *));
817 offset = sizeof(*clp);
818
819 dprint(FD_NET, "server: %d command line args\n", clp->lines);
820
821 for (i = 0; i < clp->lines; i++) {
822 cslp = pdu + offset;
823 argv[i] = (char *) cslp->text;
824
825 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
826 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
827 }
828
829 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
830 fio_net_queue_quit();
831 free(argv);
832 return -1;
833 }
834
835 free(argv);
836
837 spdu.jobs = cpu_to_le32(thread_number);
838 spdu.stat_outputs = cpu_to_le32(stat_number);
839
840 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
841 return 0;
842}
843
844static int handle_probe_cmd(struct fio_net_cmd *cmd)
845{
846 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
847 struct cmd_probe_reply_pdu probe;
848 uint64_t tag = cmd->tag;
849
850 dprint(FD_NET, "server: sending probe reply\n");
851
852 strcpy(me, (char *) pdu->server);
853
854 memset(&probe, 0, sizeof(probe));
855 gethostname((char *) probe.hostname, sizeof(probe.hostname));
856#ifdef CONFIG_BIG_ENDIAN
857 probe.bigendian = 1;
858#endif
859 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
860
861 probe.os = FIO_OS;
862 probe.arch = FIO_ARCH;
863 probe.bpp = sizeof(void *);
864 probe.cpus = __cpu_to_le32(cpus_online());
865
866 /*
867 * If the client supports compression and we do too, then enable it
868 */
869 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
870 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
871 use_zlib = 1;
872 } else {
873 probe.flags = 0;
874 use_zlib = 0;
875 }
876
877 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
878}
879
880static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
881{
882 struct jobs_eta *je;
883 uint64_t tag = cmd->tag;
884 size_t size;
885 int i;
886
887 dprint(FD_NET, "server sending status\n");
888
889 /*
890 * Fake ETA return if we don't have a local one, otherwise the client
891 * will end up timing out waiting for a response to the ETA request
892 */
893 je = get_jobs_eta(true, &size);
894 if (!je) {
895 size = sizeof(*je);
896 je = calloc(1, size);
897 } else {
898 je->nr_running = cpu_to_le32(je->nr_running);
899 je->nr_ramp = cpu_to_le32(je->nr_ramp);
900 je->nr_pending = cpu_to_le32(je->nr_pending);
901 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
902 je->files_open = cpu_to_le32(je->files_open);
903
904 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
905 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
906 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
907 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
908 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
909 je->rate[i] = cpu_to_le32(je->rate[i]);
910 je->iops[i] = cpu_to_le32(je->iops[i]);
911 }
912
913 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
914 je->eta_sec = cpu_to_le64(je->eta_sec);
915 je->nr_threads = cpu_to_le32(je->nr_threads);
916 je->is_pow2 = cpu_to_le32(je->is_pow2);
917 je->unit_base = cpu_to_le32(je->unit_base);
918 }
919
920 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
921 return 0;
922}
923
924static int send_update_job_reply(uint64_t __tag, int error)
925{
926 uint64_t tag = __tag;
927 uint32_t pdu_error;
928
929 pdu_error = __cpu_to_le32(error);
930 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
931}
932
933static int handle_update_job_cmd(struct fio_net_cmd *cmd)
934{
935 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
936 struct thread_data *td;
937 uint32_t tnumber;
938
939 tnumber = le32_to_cpu(pdu->thread_number);
940
941 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
942
943 if (!tnumber || tnumber > thread_number) {
944 send_update_job_reply(cmd->tag, ENODEV);
945 return 0;
946 }
947
948 td = &threads[tnumber - 1];
949 convert_thread_options_to_cpu(&td->o, &pdu->top);
950 send_update_job_reply(cmd->tag, 0);
951 return 0;
952}
953
954static int handle_trigger_cmd(struct fio_net_cmd *cmd)
955{
956 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
957 char *buf = (char *) pdu->cmd;
958 struct all_io_list *rep;
959 size_t sz;
960
961 pdu->len = le16_to_cpu(pdu->len);
962 buf[pdu->len] = '\0';
963
964 rep = get_all_io_list(IO_LIST_ALL, &sz);
965 if (!rep) {
966 struct all_io_list state;
967
968 state.threads = cpu_to_le64((uint64_t) 0);
969 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY);
970 } else
971 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE);
972
973 exec_trigger(buf);
974 return 0;
975}
976
977static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
978 struct fio_net_cmd *cmd)
979{
980 int ret;
981
982 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
983 fio_server_op(cmd->opcode), cmd->pdu_len,
984 (unsigned long long) cmd->tag);
985
986 switch (cmd->opcode) {
987 case FIO_NET_CMD_QUIT:
988 fio_terminate_threads(TERMINATE_ALL);
989 ret = 0;
990 break;
991 case FIO_NET_CMD_EXIT:
992 exit_backend = 1;
993 return -1;
994 case FIO_NET_CMD_LOAD_FILE:
995 ret = handle_load_file_cmd(cmd);
996 break;
997 case FIO_NET_CMD_JOB:
998 ret = handle_job_cmd(cmd);
999 break;
1000 case FIO_NET_CMD_JOBLINE:
1001 ret = handle_jobline_cmd(cmd);
1002 break;
1003 case FIO_NET_CMD_PROBE:
1004 ret = handle_probe_cmd(cmd);
1005 break;
1006 case FIO_NET_CMD_SEND_ETA:
1007 ret = handle_send_eta_cmd(cmd);
1008 break;
1009 case FIO_NET_CMD_RUN:
1010 ret = handle_run_cmd(sk_out, job_list, cmd);
1011 break;
1012 case FIO_NET_CMD_UPDATE_JOB:
1013 ret = handle_update_job_cmd(cmd);
1014 break;
1015 case FIO_NET_CMD_VTRIGGER:
1016 ret = handle_trigger_cmd(cmd);
1017 break;
1018 case FIO_NET_CMD_SENDFILE: {
1019 struct cmd_sendfile_reply *in;
1020 struct cmd_reply *rep;
1021
1022 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
1023
1024 in = (struct cmd_sendfile_reply *) cmd->payload;
1025 in->size = le32_to_cpu(in->size);
1026 in->error = le32_to_cpu(in->error);
1027 if (in->error) {
1028 ret = 1;
1029 rep->error = in->error;
1030 } else {
1031 ret = 0;
1032 rep->data = smalloc(in->size);
1033 if (!rep->data) {
1034 ret = 1;
1035 rep->error = ENOMEM;
1036 } else {
1037 rep->size = in->size;
1038 memcpy(rep->data, in->data, in->size);
1039 }
1040 }
1041 fio_mutex_up(&rep->lock);
1042 break;
1043 }
1044 default:
1045 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
1046 ret = 1;
1047 }
1048
1049 return ret;
1050}
1051
1052/*
1053 * Send a command with a separate PDU, not inlined in the command
1054 */
1055static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1056 off_t size, uint64_t tag, uint32_t flags)
1057{
1058 struct fio_net_cmd cmd;
1059 struct iovec iov[2];
1060
1061 iov[0].iov_base = (void *) &cmd;
1062 iov[0].iov_len = sizeof(cmd);
1063 iov[1].iov_base = (void *) buf;
1064 iov[1].iov_len = size;
1065
1066 __fio_init_net_cmd(&cmd, opcode, size, tag);
1067 cmd.flags = __cpu_to_le32(flags);
1068 fio_net_cmd_crc_pdu(&cmd, buf);
1069
1070 return fio_sendv_data(sk, iov, 2);
1071}
1072
1073static void finish_entry(struct sk_entry *entry)
1074{
1075 if (entry->flags & SK_F_FREE)
1076 free(entry->buf);
1077 else if (entry->flags & SK_F_COPY)
1078 sfree(entry->buf);
1079
1080 sfree(entry);
1081}
1082
1083static void entry_set_flags(struct sk_entry *entry, struct flist_head *list,
1084 unsigned int *flags)
1085{
1086 if (!flist_empty(list))
1087 *flags = FIO_NET_CMD_F_MORE;
1088 else
1089 *flags = 0;
1090}
1091
1092static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1093{
1094 unsigned int flags;
1095 int ret;
1096
1097 entry_set_flags(first, &first->next, &flags);
1098
1099 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf,
1100 first->size, first->tag, flags);
1101
1102 while (!flist_empty(&first->next)) {
1103 struct sk_entry *next;
1104
1105 next = flist_first_entry(&first->next, struct sk_entry, list);
1106 flist_del_init(&next->list);
1107
1108 entry_set_flags(next, &first->next, &flags);
1109
1110 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf,
1111 next->size, next->tag, flags);
1112 finish_entry(next);
1113 }
1114
1115 return ret;
1116}
1117
1118static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1119{
1120 int ret;
1121
1122 fio_mutex_down(&sk_out->xmit);
1123
1124 if (entry->flags & SK_F_VEC)
1125 ret = send_vec_entry(sk_out, entry);
1126 else if (entry->flags & SK_F_SIMPLE) {
1127 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode,
1128 entry->tag, NULL);
1129 } else {
1130 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf,
1131 entry->size, &entry->tag, NULL);
1132 }
1133
1134 fio_mutex_up(&sk_out->xmit);
1135
1136 if (ret)
1137 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1138
1139 finish_entry(entry);
1140 return ret;
1141}
1142
1143static int handle_xmits(struct sk_out *sk_out)
1144{
1145 struct sk_entry *entry;
1146 FLIST_HEAD(list);
1147 int ret = 0;
1148
1149 sk_lock(sk_out);
1150 if (flist_empty(&sk_out->list)) {
1151 sk_unlock(sk_out);
1152 return 0;
1153 }
1154
1155 flist_splice_init(&sk_out->list, &list);
1156 sk_unlock(sk_out);
1157
1158 while (!flist_empty(&list)) {
1159 entry = flist_entry(list.next, struct sk_entry, list);
1160 flist_del(&entry->list);
1161 ret += handle_sk_entry(sk_out, entry);
1162 }
1163
1164 return ret;
1165}
1166
1167static int handle_connection(struct sk_out *sk_out)
1168{
1169 struct fio_net_cmd *cmd = NULL;
1170 FLIST_HEAD(job_list);
1171 int ret = 0;
1172
1173 reset_fio_state();
1174
1175 /* read forever */
1176 while (!exit_backend) {
1177 struct pollfd pfd = {
1178 .fd = sk_out->sk,
1179 .events = POLLIN,
1180 };
1181
1182 ret = 0;
1183 do {
1184 int timeout = 1000;
1185
1186 if (!flist_empty(&job_list))
1187 timeout = 100;
1188
1189 handle_xmits(sk_out);
1190
1191 ret = poll(&pfd, 1, 0);
1192 if (ret < 0) {
1193 if (errno == EINTR)
1194 break;
1195 log_err("fio: poll: %s\n", strerror(errno));
1196 break;
1197 } else if (!ret) {
1198 fio_server_check_jobs(&job_list);
1199 fio_mutex_down_timeout(&sk_out->wait, timeout);
1200 continue;
1201 }
1202
1203 if (pfd.revents & POLLIN)
1204 break;
1205 if (pfd.revents & (POLLERR|POLLHUP)) {
1206 ret = 1;
1207 break;
1208 }
1209 } while (!exit_backend);
1210
1211 fio_server_check_jobs(&job_list);
1212
1213 if (ret < 0)
1214 break;
1215
1216 cmd = fio_net_recv_cmd(sk_out->sk, true);
1217 if (!cmd) {
1218 ret = -1;
1219 break;
1220 }
1221
1222 ret = handle_command(sk_out, &job_list, cmd);
1223 if (ret)
1224 break;
1225
1226 free(cmd);
1227 cmd = NULL;
1228 }
1229
1230 if (cmd)
1231 free(cmd);
1232
1233 handle_xmits(sk_out);
1234
1235 close(sk_out->sk);
1236 sk_out->sk = -1;
1237 __sk_out_drop(sk_out);
1238 _exit(ret);
1239}
1240
1241/* get the address on this host bound by the input socket,
1242 * whether it is ipv6 or ipv4 */
1243
1244static int get_my_addr_str(int sk)
1245{
1246 struct sockaddr_in6 myaddr6 = { 0, };
1247 struct sockaddr_in myaddr4 = { 0, };
1248 struct sockaddr *sockaddr_p;
1249 char *net_addr;
1250 socklen_t len;
1251 int ret;
1252
1253 if (use_ipv6) {
1254 len = sizeof(myaddr6);
1255 sockaddr_p = (struct sockaddr * )&myaddr6;
1256 net_addr = (char * )&myaddr6.sin6_addr;
1257 } else {
1258 len = sizeof(myaddr4);
1259 sockaddr_p = (struct sockaddr * )&myaddr4;
1260 net_addr = (char * )&myaddr4.sin_addr;
1261 }
1262
1263 ret = getsockname(sk, sockaddr_p, &len);
1264 if (ret) {
1265 log_err("fio: getsockaddr: %s\n", strerror(errno));
1266 return -1;
1267 }
1268
1269 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
1270 log_err("inet_ntop: failed to convert addr to string\n");
1271 return -1;
1272 }
1273
1274 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1275 return 0;
1276}
1277
1278static int accept_loop(int listen_sk)
1279{
1280 struct sockaddr_in addr;
1281 struct sockaddr_in6 addr6;
1282 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1283 struct pollfd pfd;
1284 int ret = 0, sk, exitval = 0;
1285 FLIST_HEAD(conn_list);
1286
1287 dprint(FD_NET, "server enter accept loop\n");
1288
1289 fio_set_fd_nonblocking(listen_sk, "server");
1290
1291 while (!exit_backend) {
1292 struct sk_out *sk_out;
1293 const char *from;
1294 char buf[64];
1295 pid_t pid;
1296
1297 pfd.fd = listen_sk;
1298 pfd.events = POLLIN;
1299 do {
1300 int timeout = 1000;
1301
1302 if (!flist_empty(&conn_list))
1303 timeout = 100;
1304
1305 ret = poll(&pfd, 1, timeout);
1306 if (ret < 0) {
1307 if (errno == EINTR)
1308 break;
1309 log_err("fio: poll: %s\n", strerror(errno));
1310 break;
1311 } else if (!ret) {
1312 fio_server_check_conns(&conn_list);
1313 continue;
1314 }
1315
1316 if (pfd.revents & POLLIN)
1317 break;
1318 } while (!exit_backend);
1319
1320 fio_server_check_conns(&conn_list);
1321
1322 if (exit_backend || ret < 0)
1323 break;
1324
1325 if (use_ipv6)
1326 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1327 else
1328 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1329
1330 if (sk < 0) {
1331 log_err("fio: accept: %s\n", strerror(errno));
1332 return -1;
1333 }
1334
1335 if (use_ipv6)
1336 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1337 else
1338 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1339
1340 dprint(FD_NET, "server: connect from %s\n", from);
1341
1342 sk_out = smalloc(sizeof(*sk_out));
1343 sk_out->sk = sk;
1344 INIT_FLIST_HEAD(&sk_out->list);
1345 __fio_mutex_init(&sk_out->lock, FIO_MUTEX_UNLOCKED);
1346 __fio_mutex_init(&sk_out->wait, FIO_MUTEX_LOCKED);
1347 __fio_mutex_init(&sk_out->xmit, FIO_MUTEX_UNLOCKED);
1348
1349 pid = fork();
1350 if (pid) {
1351 close(sk);
1352 fio_server_add_conn_pid(&conn_list, pid);
1353 continue;
1354 }
1355
1356 /* if error, it's already logged, non-fatal */
1357 get_my_addr_str(sk);
1358
1359 /*
1360 * Assign sk_out here, it'll be dropped in handle_connection()
1361 * since that function calls _exit() when done
1362 */
1363 sk_out_assign(sk_out);
1364 handle_connection(sk_out);
1365 }
1366
1367 return exitval;
1368}
1369
1370int fio_server_text_output(int level, const char *buf, size_t len)
1371{
1372 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1373 struct cmd_text_pdu *pdu;
1374 unsigned int tlen;
1375 struct timeval tv;
1376
1377 if (!sk_out || sk_out->sk == -1)
1378 return -1;
1379
1380 tlen = sizeof(*pdu) + len;
1381 pdu = malloc(tlen);
1382
1383 pdu->level = __cpu_to_le32(level);
1384 pdu->buf_len = __cpu_to_le32(len);
1385
1386 gettimeofday(&tv, NULL);
1387 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1388 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1389
1390 memcpy(pdu->buf, buf, len);
1391
1392 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1393 free(pdu);
1394 return len;
1395}
1396
1397static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1398{
1399 dst->max_val = cpu_to_le64(src->max_val);
1400 dst->min_val = cpu_to_le64(src->min_val);
1401 dst->samples = cpu_to_le64(src->samples);
1402
1403 /*
1404 * Encode to IEEE 754 for network transfer
1405 */
1406 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1407 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1408}
1409
1410static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1411{
1412 int i;
1413
1414 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1415 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1416 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1417 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1418 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1419 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
1420 dst->agg[i] = cpu_to_le64(src->agg[i]);
1421 }
1422
1423 dst->kb_base = cpu_to_le32(src->kb_base);
1424 dst->unit_base = cpu_to_le32(src->unit_base);
1425 dst->groupid = cpu_to_le32(src->groupid);
1426 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1427}
1428
1429/*
1430 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1431 * into a single payload.
1432 */
1433void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1434{
1435 struct cmd_ts_pdu p;
1436 int i, j;
1437
1438 dprint(FD_NET, "server sending end stats\n");
1439
1440 memset(&p, 0, sizeof(p));
1441
1442 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1443 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1444 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1445
1446 p.ts.error = cpu_to_le32(ts->error);
1447 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1448 p.ts.groupid = cpu_to_le32(ts->groupid);
1449 p.ts.pid = cpu_to_le32(ts->pid);
1450 p.ts.members = cpu_to_le32(ts->members);
1451 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1452
1453 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1454 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1455 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1456 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1457 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1458 }
1459
1460 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1461 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1462 p.ts.ctx = cpu_to_le64(ts->ctx);
1463 p.ts.minf = cpu_to_le64(ts->minf);
1464 p.ts.majf = cpu_to_le64(ts->majf);
1465 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1466 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1467
1468 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1469 fio_fp64_t *src = &ts->percentile_list[i];
1470 fio_fp64_t *dst = &p.ts.percentile_list[i];
1471
1472 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1473 }
1474
1475 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1476 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1477 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1478 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1479 }
1480
1481 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1482 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1483 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1484 }
1485
1486 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1487 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1488 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1489
1490 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1491 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1492 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1493 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1494 }
1495
1496 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1497 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1498
1499 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1500 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1501 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1502 }
1503
1504 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1505 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1506 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1507 p.ts.first_error = cpu_to_le32(ts->first_error);
1508 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1509 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1510
1511 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1512 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1513 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1514 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1515
1516 p.ts.nr_block_infos = le64_to_cpu(ts->nr_block_infos);
1517 for (i = 0; i < p.ts.nr_block_infos; i++)
1518 p.ts.block_infos[i] = le32_to_cpu(ts->block_infos[i]);
1519
1520 convert_gs(&p.rs, rs);
1521
1522 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1523}
1524
1525void fio_server_send_gs(struct group_run_stats *rs)
1526{
1527 struct group_run_stats gs;
1528
1529 dprint(FD_NET, "server sending group run stats\n");
1530
1531 convert_gs(&gs, rs);
1532 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1533}
1534
1535void fio_server_send_job_options(struct flist_head *opt_list,
1536 unsigned int groupid)
1537{
1538 struct cmd_job_option pdu;
1539 struct flist_head *entry;
1540
1541 if (flist_empty(opt_list))
1542 return;
1543
1544 flist_for_each(entry, opt_list) {
1545 struct print_option *p;
1546 size_t len;
1547
1548 p = flist_entry(entry, struct print_option, list);
1549 memset(&pdu, 0, sizeof(pdu));
1550
1551 if (groupid == -1U) {
1552 pdu.global = __cpu_to_le16(1);
1553 pdu.groupid = 0;
1554 } else {
1555 pdu.global = 0;
1556 pdu.groupid = cpu_to_le32(groupid);
1557 }
1558 len = strlen(p->name);
1559 if (len >= sizeof(pdu.name)) {
1560 len = sizeof(pdu.name) - 1;
1561 pdu.truncated = __cpu_to_le16(1);
1562 }
1563 memcpy(pdu.name, p->name, len);
1564 if (p->value) {
1565 len = strlen(p->value);
1566 if (len >= sizeof(pdu.value)) {
1567 len = sizeof(pdu.value) - 1;
1568 pdu.truncated = __cpu_to_le16(1);
1569 }
1570 memcpy(pdu.value, p->value, len);
1571 }
1572 fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1573 }
1574}
1575
1576static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1577{
1578 int i;
1579
1580 for (i = 0; i < 2; i++) {
1581 dst->ios[i] = cpu_to_le64(src->ios[i]);
1582 dst->merges[i] = cpu_to_le64(src->merges[i]);
1583 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1584 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1585 }
1586
1587 dst->io_ticks = cpu_to_le64(src->io_ticks);
1588 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1589 dst->slavecount = cpu_to_le32(src->slavecount);
1590 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1591}
1592
1593static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1594{
1595 int i;
1596
1597 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1598 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1599
1600 for (i = 0; i < 2; i++) {
1601 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1602 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1603 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1604 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1605 }
1606
1607 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1608 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1609 dst->s.msec = cpu_to_le64(src->s.msec);
1610}
1611
1612void fio_server_send_du(void)
1613{
1614 struct disk_util *du;
1615 struct flist_head *entry;
1616 struct cmd_du_pdu pdu;
1617
1618 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1619
1620 memset(&pdu, 0, sizeof(pdu));
1621
1622 flist_for_each(entry, &disk_list) {
1623 du = flist_entry(entry, struct disk_util, list);
1624
1625 convert_dus(&pdu.dus, &du->dus);
1626 convert_agg(&pdu.agg, &du->agg);
1627
1628 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1629 }
1630}
1631
1632static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
1633{
1634 int ret = 0;
1635#ifdef CONFIG_ZLIB
1636 struct sk_entry *entry;
1637 z_stream stream;
1638 void *out_pdu;
1639
1640 /*
1641 * Dirty - since the log is potentially huge, compress it into
1642 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1643 * side defragment it.
1644 */
1645 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1646
1647 stream.zalloc = Z_NULL;
1648 stream.zfree = Z_NULL;
1649 stream.opaque = Z_NULL;
1650
1651 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1652 ret = 1;
1653 goto err;
1654 }
1655
1656 stream.next_in = (void *) log->log;
1657 stream.avail_in = log->nr_samples * log_entry_sz(log);
1658
1659 do {
1660 unsigned int this_len;
1661
1662 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1663 stream.next_out = out_pdu;
1664 ret = deflate(&stream, Z_FINISH);
1665 /* may be Z_OK, or Z_STREAM_END */
1666 if (ret < 0)
1667 goto err_zlib;
1668
1669 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1670
1671 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1672 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1673 out_pdu = NULL;
1674 flist_add_tail(&entry->list, &first->next);
1675 } while (stream.avail_in);
1676
1677err_zlib:
1678 deflateEnd(&stream);
1679err:
1680 free(out_pdu);
1681#endif
1682 return ret;
1683}
1684
1685static int fio_append_gz_chunks(struct sk_entry *first, struct io_log *log)
1686{
1687 struct sk_entry *entry;
1688 struct flist_head *node;
1689
1690 pthread_mutex_lock(&log->chunk_lock);
1691 flist_for_each(node, &log->chunk_list) {
1692 struct iolog_compress *c;
1693
1694 c = flist_entry(node, struct iolog_compress, list);
1695 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, c->buf, c->len,
1696 NULL, SK_F_VEC | SK_F_INLINE);
1697 flist_add_tail(&entry->list, &first->next);
1698 }
1699 pthread_mutex_unlock(&log->chunk_lock);
1700
1701 return 0;
1702}
1703
1704static int fio_append_text_log(struct sk_entry *first, struct io_log *log)
1705{
1706 struct sk_entry *entry;
1707 size_t size = log->nr_samples * log_entry_sz(log);
1708
1709 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, log->log, size,
1710 NULL, SK_F_VEC | SK_F_INLINE);
1711 flist_add_tail(&entry->list, &first->next);
1712 return 0;
1713}
1714
1715int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1716{
1717 struct cmd_iolog_pdu pdu;
1718 struct sk_entry *first;
1719 int i, ret = 0;
1720
1721 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1722 pdu.thread_number = cpu_to_le32(td->thread_number);
1723 pdu.log_type = cpu_to_le32(log->log_type);
1724
1725 if (!flist_empty(&log->chunk_list))
1726 pdu.compressed = __cpu_to_le32(STORE_COMPRESSED);
1727 else if (use_zlib)
1728 pdu.compressed = __cpu_to_le32(XMIT_COMPRESSED);
1729 else
1730 pdu.compressed = 0;
1731
1732 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1733 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1734
1735 /*
1736 * We can't do this for a pre-compressed log, but for that case,
1737 * log->nr_samples is zero anyway.
1738 */
1739 for (i = 0; i < log->nr_samples; i++) {
1740 struct io_sample *s = get_sample(log, i);
1741
1742 s->time = cpu_to_le64(s->time);
1743 s->val = cpu_to_le64(s->val);
1744 s->__ddir = cpu_to_le32(s->__ddir);
1745 s->bs = cpu_to_le32(s->bs);
1746
1747 if (log->log_offset) {
1748 struct io_sample_offset *so = (void *) s;
1749
1750 so->offset = cpu_to_le64(so->offset);
1751 }
1752 }
1753
1754 /*
1755 * Assemble header entry first
1756 */
1757 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY);
1758
1759 /*
1760 * Now append actual log entries. If log compression was enabled on
1761 * the job, just send out the compressed chunks directly. If we
1762 * have a plain log, compress if we can, then send. Otherwise, send
1763 * the plain text output.
1764 */
1765 if (!flist_empty(&log->chunk_list))
1766 ret = fio_append_gz_chunks(first, log);
1767 else if (use_zlib)
1768 ret = fio_append_iolog_gz(first, log);
1769 else
1770 ret = fio_append_text_log(first, log);
1771
1772 fio_net_queue_entry(first);
1773 return ret;
1774}
1775
1776void fio_server_send_add_job(struct thread_data *td)
1777{
1778 struct cmd_add_job_pdu pdu;
1779
1780 memset(&pdu, 0, sizeof(pdu));
1781 pdu.thread_number = cpu_to_le32(td->thread_number);
1782 pdu.groupid = cpu_to_le32(td->groupid);
1783 convert_thread_options_to_net(&pdu.top, &td->o);
1784
1785 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL,
1786 SK_F_COPY);
1787}
1788
1789void fio_server_send_start(struct thread_data *td)
1790{
1791 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1792
1793 assert(sk_out->sk != -1);
1794
1795 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, 0, SK_F_SIMPLE);
1796}
1797
1798int fio_server_get_verify_state(const char *name, int threadnumber,
1799 void **datap, int *version)
1800{
1801 struct thread_io_list *s;
1802 struct cmd_sendfile out;
1803 struct cmd_reply *rep;
1804 uint64_t tag;
1805 void *data;
1806 int ret;
1807
1808 dprint(FD_NET, "server: request verify state\n");
1809
1810 rep = smalloc(sizeof(*rep));
1811 if (!rep) {
1812 log_err("fio: smalloc pool too small\n");
1813 return ENOMEM;
1814 }
1815
1816 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1817 rep->data = NULL;
1818 rep->error = 0;
1819
1820 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1821 threadnumber);
1822 tag = (uint64_t) (uintptr_t) rep;
1823 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag,
1824 SK_F_COPY);
1825
1826 /*
1827 * Wait for the backend to receive the reply
1828 */
1829 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
1830 log_err("fio: timed out waiting for reply\n");
1831 ret = ETIMEDOUT;
1832 goto fail;
1833 }
1834
1835 if (rep->error) {
1836 log_err("fio: failure on receiving state file %s: %s\n",
1837 out.path, strerror(rep->error));
1838 ret = rep->error;
1839fail:
1840 *datap = NULL;
1841 sfree(rep);
1842 fio_net_queue_quit();
1843 return ret;
1844 }
1845
1846 /*
1847 * The format is verify_state_hdr, then thread_io_list. Verify
1848 * the header, and the thread_io_list checksum
1849 */
1850 s = rep->data + sizeof(struct verify_state_hdr);
1851 if (verify_state_hdr(rep->data, s, version)) {
1852 ret = EILSEQ;
1853 goto fail;
1854 }
1855
1856 /*
1857 * Don't need the header from now, copy just the thread_io_list
1858 */
1859 ret = 0;
1860 rep->size -= sizeof(struct verify_state_hdr);
1861 data = malloc(rep->size);
1862 memcpy(data, s, rep->size);
1863 *datap = data;
1864
1865 sfree(rep->data);
1866 __fio_mutex_remove(&rep->lock);
1867 sfree(rep);
1868 return ret;
1869}
1870
1871static int fio_init_server_ip(void)
1872{
1873 struct sockaddr *addr;
1874 socklen_t socklen;
1875 char buf[80];
1876 const char *str;
1877 int sk, opt;
1878
1879 if (use_ipv6)
1880 sk = socket(AF_INET6, SOCK_STREAM, 0);
1881 else
1882 sk = socket(AF_INET, SOCK_STREAM, 0);
1883
1884 if (sk < 0) {
1885 log_err("fio: socket: %s\n", strerror(errno));
1886 return -1;
1887 }
1888
1889 opt = 1;
1890 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1891 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1892 close(sk);
1893 return -1;
1894 }
1895#ifdef SO_REUSEPORT
1896 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1897 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1898 close(sk);
1899 return -1;
1900 }
1901#endif
1902
1903 if (use_ipv6) {
1904 const void *src = &saddr_in6.sin6_addr;
1905
1906 addr = (struct sockaddr *) &saddr_in6;
1907 socklen = sizeof(saddr_in6);
1908 saddr_in6.sin6_family = AF_INET6;
1909 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1910 } else {
1911 const void *src = &saddr_in.sin_addr;
1912
1913 addr = (struct sockaddr *) &saddr_in;
1914 socklen = sizeof(saddr_in);
1915 saddr_in.sin_family = AF_INET;
1916 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1917 }
1918
1919 if (bind(sk, addr, socklen) < 0) {
1920 log_err("fio: bind: %s\n", strerror(errno));
1921 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1922 close(sk);
1923 return -1;
1924 }
1925
1926 return sk;
1927}
1928
1929static int fio_init_server_sock(void)
1930{
1931 struct sockaddr_un addr;
1932 socklen_t len;
1933 mode_t mode;
1934 int sk;
1935
1936 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1937 if (sk < 0) {
1938 log_err("fio: socket: %s\n", strerror(errno));
1939 return -1;
1940 }
1941
1942 mode = umask(000);
1943
1944 memset(&addr, 0, sizeof(addr));
1945 addr.sun_family = AF_UNIX;
1946 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1947
1948 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1949
1950 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1951 log_err("fio: bind: %s\n", strerror(errno));
1952 close(sk);
1953 return -1;
1954 }
1955
1956 umask(mode);
1957 return sk;
1958}
1959
1960static int fio_init_server_connection(void)
1961{
1962 char bind_str[128];
1963 int sk;
1964
1965 dprint(FD_NET, "starting server\n");
1966
1967 if (!bind_sock)
1968 sk = fio_init_server_ip();
1969 else
1970 sk = fio_init_server_sock();
1971
1972 if (sk < 0)
1973 return sk;
1974
1975 memset(bind_str, 0, sizeof(bind_str));
1976
1977 if (!bind_sock) {
1978 char *p, port[16];
1979 const void *src;
1980 int af;
1981
1982 if (use_ipv6) {
1983 af = AF_INET6;
1984 src = &saddr_in6.sin6_addr;
1985 } else {
1986 af = AF_INET;
1987 src = &saddr_in.sin_addr;
1988 }
1989
1990 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1991
1992 sprintf(port, ",%u", fio_net_port);
1993 if (p)
1994 strcat(p, port);
1995 else
1996 strncpy(bind_str, port, sizeof(bind_str) - 1);
1997 } else
1998 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1999
2000 log_info("fio: server listening on %s\n", bind_str);
2001
2002 if (listen(sk, 4) < 0) {
2003 log_err("fio: listen: %s\n", strerror(errno));
2004 close(sk);
2005 return -1;
2006 }
2007
2008 return sk;
2009}
2010
2011int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
2012 struct in6_addr *inp6)
2013
2014{
2015 int ret = 0;
2016
2017 if (ipv6)
2018 ret = inet_pton(AF_INET6, host, inp6);
2019 else
2020 ret = inet_pton(AF_INET, host, inp);
2021
2022 if (ret != 1) {
2023 struct addrinfo hints, *res;
2024
2025 memset(&hints, 0, sizeof(hints));
2026 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
2027 hints.ai_socktype = SOCK_STREAM;
2028
2029 ret = getaddrinfo(host, NULL, &hints, &res);
2030 if (ret) {
2031 log_err("fio: failed to resolve <%s> (%s)\n", host,
2032 gai_strerror(ret));
2033 return 1;
2034 }
2035
2036 if (ipv6)
2037 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
2038 else
2039 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
2040
2041 ret = 1;
2042 freeaddrinfo(res);
2043 }
2044
2045 return !(ret == 1);
2046}
2047
2048/*
2049 * Parse a host/ip/port string. Reads from 'str'.
2050 *
2051 * Outputs:
2052 *
2053 * For IPv4:
2054 * *ptr is the host, *port is the port, inp is the destination.
2055 * For IPv6:
2056 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
2057 * For local domain sockets:
2058 * *ptr is the filename, *is_sock is 1.
2059 */
2060int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
2061 int *port, struct in_addr *inp,
2062 struct in6_addr *inp6, int *ipv6)
2063{
2064 const char *host = str;
2065 char *portp;
2066 int lport = 0;
2067
2068 *ptr = NULL;
2069 *is_sock = 0;
2070 *port = fio_net_port;
2071 *ipv6 = 0;
2072
2073 if (!strncmp(str, "sock:", 5)) {
2074 *ptr = strdup(str + 5);
2075 *is_sock = 1;
2076
2077 return 0;
2078 }
2079
2080 /*
2081 * Is it ip:<ip or host>:port
2082 */
2083 if (!strncmp(host, "ip:", 3))
2084 host += 3;
2085 else if (!strncmp(host, "ip4:", 4))
2086 host += 4;
2087 else if (!strncmp(host, "ip6:", 4)) {
2088 host += 4;
2089 *ipv6 = 1;
2090 } else if (host[0] == ':') {
2091 /* String is :port */
2092 host++;
2093 lport = atoi(host);
2094 if (!lport || lport > 65535) {
2095 log_err("fio: bad server port %u\n", lport);
2096 return 1;
2097 }
2098 /* no hostname given, we are done */
2099 *port = lport;
2100 return 0;
2101 }
2102
2103 /*
2104 * If no port seen yet, check if there's a last ',' at the end
2105 */
2106 if (!lport) {
2107 portp = strchr(host, ',');
2108 if (portp) {
2109 *portp = '\0';
2110 portp++;
2111 lport = atoi(portp);
2112 if (!lport || lport > 65535) {
2113 log_err("fio: bad server port %u\n", lport);
2114 return 1;
2115 }
2116 }
2117 }
2118
2119 if (lport)
2120 *port = lport;
2121
2122 if (!strlen(host))
2123 return 0;
2124
2125 *ptr = strdup(host);
2126
2127 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
2128 free(*ptr);
2129 *ptr = NULL;
2130 return 1;
2131 }
2132
2133 if (*port == 0)
2134 *port = fio_net_port;
2135
2136 return 0;
2137}
2138
2139/*
2140 * Server arg should be one of:
2141 *
2142 * sock:/path/to/socket
2143 * ip:1.2.3.4
2144 * 1.2.3.4
2145 *
2146 * Where sock uses unix domain sockets, and ip binds the server to
2147 * a specific interface. If no arguments are given to the server, it
2148 * uses IP and binds to 0.0.0.0.
2149 *
2150 */
2151static int fio_handle_server_arg(void)
2152{
2153 int port = fio_net_port;
2154 int is_sock, ret = 0;
2155
2156 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2157
2158 if (!fio_server_arg)
2159 goto out;
2160
2161 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
2162 &port, &saddr_in.sin_addr,
2163 &saddr_in6.sin6_addr, &use_ipv6);
2164
2165 if (!is_sock && bind_sock) {
2166 free(bind_sock);
2167 bind_sock = NULL;
2168 }
2169
2170out:
2171 fio_net_port = port;
2172 saddr_in.sin_port = htons(port);
2173 saddr_in6.sin6_port = htons(port);
2174 return ret;
2175}
2176
2177static void sig_int(int sig)
2178{
2179 if (bind_sock)
2180 unlink(bind_sock);
2181}
2182
2183static void set_sig_handlers(void)
2184{
2185 struct sigaction act;
2186
2187 memset(&act, 0, sizeof(act));
2188 act.sa_handler = sig_int;
2189 act.sa_flags = SA_RESTART;
2190 sigaction(SIGINT, &act, NULL);
2191}
2192
2193void fio_server_destroy_sk_key(void)
2194{
2195 pthread_key_delete(sk_out_key);
2196}
2197
2198int fio_server_create_sk_key(void)
2199{
2200 if (pthread_key_create(&sk_out_key, NULL)) {
2201 log_err("fio: can't create sk_out backend key\n");
2202 return 1;
2203 }
2204
2205 pthread_setspecific(sk_out_key, NULL);
2206 return 0;
2207}
2208
2209static int fio_server(void)
2210{
2211 int sk, ret;
2212
2213 dprint(FD_NET, "starting server\n");
2214
2215 if (fio_handle_server_arg())
2216 return -1;
2217
2218 sk = fio_init_server_connection();
2219 if (sk < 0)
2220 return -1;
2221
2222 set_sig_handlers();
2223
2224 ret = accept_loop(sk);
2225
2226 close(sk);
2227
2228 if (fio_server_arg) {
2229 free(fio_server_arg);
2230 fio_server_arg = NULL;
2231 }
2232 if (bind_sock)
2233 free(bind_sock);
2234
2235 return ret;
2236}
2237
2238void fio_server_got_signal(int signal)
2239{
2240 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2241
2242 assert(sk_out);
2243
2244 if (signal == SIGPIPE)
2245 sk_out->sk = -1;
2246 else {
2247 log_info("\nfio: terminating on signal %d\n", signal);
2248 exit_backend = 1;
2249 }
2250}
2251
2252static int check_existing_pidfile(const char *pidfile)
2253{
2254 struct stat sb;
2255 char buf[16];
2256 pid_t pid;
2257 FILE *f;
2258
2259 if (stat(pidfile, &sb))
2260 return 0;
2261
2262 f = fopen(pidfile, "r");
2263 if (!f)
2264 return 0;
2265
2266 if (fread(buf, sb.st_size, 1, f) <= 0) {
2267 fclose(f);
2268 return 1;
2269 }
2270 fclose(f);
2271
2272 pid = atoi(buf);
2273 if (kill(pid, SIGCONT) < 0)
2274 return errno != ESRCH;
2275
2276 return 1;
2277}
2278
2279static int write_pid(pid_t pid, const char *pidfile)
2280{
2281 FILE *fpid;
2282
2283 fpid = fopen(pidfile, "w");
2284 if (!fpid) {
2285 log_err("fio: failed opening pid file %s\n", pidfile);
2286 return 1;
2287 }
2288
2289 fprintf(fpid, "%u\n", (unsigned int) pid);
2290 fclose(fpid);
2291 return 0;
2292}
2293
2294/*
2295 * If pidfile is specified, background us.
2296 */
2297int fio_start_server(char *pidfile)
2298{
2299 pid_t pid;
2300 int ret;
2301
2302#if defined(WIN32)
2303 WSADATA wsd;
2304 WSAStartup(MAKEWORD(2, 2), &wsd);
2305#endif
2306
2307 if (!pidfile)
2308 return fio_server();
2309
2310 if (check_existing_pidfile(pidfile)) {
2311 log_err("fio: pidfile %s exists and server appears alive\n",
2312 pidfile);
2313 free(pidfile);
2314 return -1;
2315 }
2316
2317 pid = fork();
2318 if (pid < 0) {
2319 log_err("fio: failed server fork: %s", strerror(errno));
2320 free(pidfile);
2321 return -1;
2322 } else if (pid) {
2323 ret = write_pid(pid, pidfile);
2324 free(pidfile);
2325 _exit(ret);
2326 }
2327
2328 setsid();
2329 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2330 log_syslog = 1;
2331 close(STDIN_FILENO);
2332 close(STDOUT_FILENO);
2333 close(STDERR_FILENO);
2334 f_out = NULL;
2335 f_err = NULL;
2336
2337 ret = fio_server();
2338
2339 closelog();
2340 unlink(pidfile);
2341 free(pidfile);
2342 return ret;
2343}
2344
2345void fio_server_set_arg(const char *arg)
2346{
2347 fio_server_arg = strdup(arg);
2348}
fio - Flexible IO Tester