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client/server: pass back packed thread_options in add_job()
[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 <fcntl.h>
8#include <sys/poll.h>
9#include <sys/types.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/stat.h>
13#include <sys/un.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19
20#include "fio.h"
21#include "server.h"
22#include "crc/crc16.h"
23#include "lib/ieee754.h"
24
25#include "fio_version.h"
26
27int fio_net_port = FIO_NET_PORT;
28
29int exit_backend = 0;
30
31static int server_fd = -1;
32static char *fio_server_arg;
33static char *bind_sock;
34static struct sockaddr_in saddr_in;
35static struct sockaddr_in6 saddr_in6;
36static int first_cmd_check;
37static int use_ipv6;
38
39static const char *fio_server_ops[FIO_NET_CMD_NR] = {
40 "",
41 "QUIT",
42 "EXIT",
43 "JOB",
44 "JOBLINE",
45 "TEXT",
46 "TS",
47 "GS",
48 "SEND_ETA",
49 "ETA",
50 "PROBE",
51 "START",
52 "STOP",
53 "DISK_UTIL",
54 "RUN",
55 "ADD_JOB",
56};
57
58const char *fio_server_op(unsigned int op)
59{
60 static char buf[32];
61
62 if (op < FIO_NET_CMD_NR)
63 return fio_server_ops[op];
64
65 sprintf(buf, "UNKNOWN/%d", op);
66 return buf;
67}
68
69int fio_send_data(int sk, const void *p, unsigned int len)
70{
71 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
72
73 do {
74 int ret = send(sk, p, len, 0);
75
76 if (ret > 0) {
77 len -= ret;
78 if (!len)
79 break;
80 p += ret;
81 continue;
82 } else if (!ret)
83 break;
84 else if (errno == EAGAIN || errno == EINTR)
85 continue;
86 else
87 break;
88 } while (!exit_backend);
89
90 if (!len)
91 return 0;
92
93 return 1;
94}
95
96int fio_recv_data(int sk, void *p, unsigned int len)
97{
98 do {
99 int ret = recv(sk, p, len, MSG_WAITALL);
100
101 if (ret > 0) {
102 len -= ret;
103 if (!len)
104 break;
105 p += ret;
106 continue;
107 } else if (!ret)
108 break;
109 else if (errno == EAGAIN || errno == EINTR)
110 continue;
111 else
112 break;
113 } while (!exit_backend);
114
115 if (!len)
116 return 0;
117
118 return -1;
119}
120
121static int verify_convert_cmd(struct fio_net_cmd *cmd)
122{
123 uint16_t crc;
124
125 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
126 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
127
128 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
129 if (crc != cmd->cmd_crc16) {
130 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
131 cmd->cmd_crc16, crc);
132 return 1;
133 }
134
135 cmd->version = le16_to_cpu(cmd->version);
136 cmd->opcode = le16_to_cpu(cmd->opcode);
137 cmd->flags = le32_to_cpu(cmd->flags);
138 cmd->tag = le64_to_cpu(cmd->tag);
139 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
140
141 switch (cmd->version) {
142 case FIO_SERVER_VER:
143 break;
144 default:
145 log_err("fio: bad server cmd version %d\n", cmd->version);
146 return 1;
147 }
148
149 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
150 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
151 return 1;
152 }
153
154 return 0;
155}
156
157/*
158 * Read (and defragment, if necessary) incoming commands
159 */
160struct fio_net_cmd *fio_net_recv_cmd(int sk)
161{
162 struct fio_net_cmd cmd, *cmdret = NULL;
163 size_t cmd_size = 0, pdu_offset = 0;
164 uint16_t crc;
165 int ret, first = 1;
166 void *pdu = NULL;
167
168 do {
169 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
170 if (ret)
171 break;
172
173 /* We have a command, verify it and swap if need be */
174 ret = verify_convert_cmd(&cmd);
175 if (ret)
176 break;
177
178 if (first) {
179 /* if this is text, add room for \0 at the end */
180 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
181 assert(!cmdret);
182 } else
183 cmd_size += cmd.pdu_len;
184
185 cmdret = realloc(cmdret, cmd_size);
186
187 if (first)
188 memcpy(cmdret, &cmd, sizeof(cmd));
189 else if (cmdret->opcode != cmd.opcode) {
190 log_err("fio: fragment opcode mismatch (%d != %d)\n",
191 cmdret->opcode, cmd.opcode);
192 ret = 1;
193 break;
194 }
195
196 if (!cmd.pdu_len)
197 break;
198
199 /* There's payload, get it */
200 pdu = (void *) cmdret->payload + pdu_offset;
201 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
202 if (ret)
203 break;
204
205 /* Verify payload crc */
206 crc = fio_crc16(pdu, cmd.pdu_len);
207 if (crc != cmd.pdu_crc16) {
208 log_err("fio: server bad crc on payload ");
209 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
210 ret = 1;
211 break;
212 }
213
214 pdu_offset += cmd.pdu_len;
215 if (!first)
216 cmdret->pdu_len += cmd.pdu_len;
217 first = 0;
218 } while (cmd.flags & FIO_NET_CMD_F_MORE);
219
220 if (ret) {
221 free(cmdret);
222 cmdret = NULL;
223 } else if (cmdret) {
224 /* zero-terminate text input */
225 if (cmdret->pdu_len) {
226 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
227 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
228 char *buf = (char *) pdu->buf;
229
230 buf[pdu->buf_len ] = '\0';
231 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
232 char *buf = (char *) cmdret->payload;
233
234 buf[cmdret->pdu_len ] = '\0';
235 }
236 }
237
238 /* frag flag is internal */
239 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
240 }
241
242 return cmdret;
243}
244
245void fio_net_cmd_crc(struct fio_net_cmd *cmd)
246{
247 uint32_t pdu_len;
248
249 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
250
251 pdu_len = le32_to_cpu(cmd->pdu_len);
252 if (pdu_len)
253 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
254}
255
256int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
257 uint64_t tag)
258{
259 struct fio_net_cmd *cmd = NULL;
260 size_t this_len, cur_len = 0;
261 int ret;
262
263 do {
264 this_len = size;
265 if (this_len > FIO_SERVER_MAX_PDU)
266 this_len = FIO_SERVER_MAX_PDU;
267
268 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
269 if (cmd)
270 free(cmd);
271
272 cur_len = sizeof(*cmd) + this_len;
273 cmd = malloc(cur_len);
274 }
275
276 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
277
278 if (this_len < size)
279 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
280
281 fio_net_cmd_crc(cmd);
282
283 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
284 size -= this_len;
285 buf += this_len;
286 } while (!ret && size);
287
288 if (cmd)
289 free(cmd);
290
291 return ret;
292}
293
294static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
295{
296 struct fio_net_cmd cmd;
297
298 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
299 fio_net_cmd_crc(&cmd);
300
301 return fio_send_data(sk, &cmd, sizeof(cmd));
302}
303
304/*
305 * If 'list' is non-NULL, then allocate and store the sent command for
306 * later verification.
307 */
308int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
309 struct flist_head *list)
310{
311 struct fio_net_int_cmd *cmd;
312 int ret;
313
314 if (!list)
315 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
316
317 cmd = malloc(sizeof(*cmd));
318
319 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
320 fio_net_cmd_crc(&cmd->cmd);
321
322 INIT_FLIST_HEAD(&cmd->list);
323 gettimeofday(&cmd->tv, NULL);
324 cmd->saved_tag = tag;
325
326 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
327 if (ret) {
328 free(cmd);
329 return ret;
330 }
331
332 flist_add_tail(&cmd->list, list);
333 return 0;
334}
335
336static int fio_server_send_quit_cmd(void)
337{
338 dprint(FD_NET, "server: sending quit\n");
339 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
340}
341
342static int handle_job_cmd(struct fio_net_cmd *cmd)
343{
344 char *buf = (char *) cmd->payload;
345 struct cmd_start_pdu spdu;
346 struct cmd_end_pdu epdu;
347 int ret;
348
349 if (parse_jobs_ini(buf, 1, 0)) {
350 fio_server_send_quit_cmd();
351 return -1;
352 }
353
354 spdu.jobs = cpu_to_le32(thread_number);
355 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
356
357 ret = fio_backend();
358
359 epdu.error = ret;
360 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
361
362 fio_server_send_quit_cmd();
363 reset_fio_state();
364 first_cmd_check = 0;
365 return ret;
366}
367
368static int handle_jobline_cmd(struct fio_net_cmd *cmd)
369{
370 void *pdu = cmd->payload;
371 struct cmd_single_line_pdu *cslp;
372 struct cmd_line_pdu *clp;
373 unsigned long offset;
374 char **argv;
375 int ret, i;
376
377 clp = pdu;
378 clp->lines = le16_to_cpu(clp->lines);
379 argv = malloc(clp->lines * sizeof(char *));
380 offset = sizeof(*clp);
381
382 dprint(FD_NET, "server: %d command line args\n", clp->lines);
383
384 for (i = 0; i < clp->lines; i++) {
385 cslp = pdu + offset;
386 argv[i] = (char *) cslp->text;
387
388 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
389 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
390 }
391
392 if (parse_cmd_line(clp->lines, argv)) {
393 fio_server_send_quit_cmd();
394 free(argv);
395 return -1;
396 }
397
398 free(argv);
399
400 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
401
402 ret = fio_backend();
403 fio_server_send_quit_cmd();
404 reset_fio_state();
405 first_cmd_check = 0;
406 return ret;
407}
408
409static int handle_probe_cmd(struct fio_net_cmd *cmd)
410{
411 struct cmd_probe_pdu probe;
412
413 dprint(FD_NET, "server: sending probe reply\n");
414
415 memset(&probe, 0, sizeof(probe));
416 gethostname((char *) probe.hostname, sizeof(probe.hostname));
417#ifdef FIO_BIG_ENDIAN
418 probe.bigendian = 1;
419#endif
420 probe.fio_major = FIO_MAJOR;
421 probe.fio_minor = FIO_MINOR;
422 probe.fio_patch = FIO_PATCH;
423
424 probe.os = FIO_OS;
425 probe.arch = FIO_ARCH;
426
427 probe.bpp = sizeof(void *);
428
429 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
430}
431
432static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
433{
434 struct jobs_eta *je;
435 size_t size;
436 int i;
437
438 if (!thread_number)
439 return 0;
440
441 size = sizeof(*je) + thread_number * sizeof(char) + 1;
442 je = malloc(size);
443 memset(je, 0, size);
444
445 if (!calc_thread_status(je, 1)) {
446 free(je);
447 return 0;
448 }
449
450 dprint(FD_NET, "server sending status\n");
451
452 je->nr_running = cpu_to_le32(je->nr_running);
453 je->nr_ramp = cpu_to_le32(je->nr_ramp);
454 je->nr_pending = cpu_to_le32(je->nr_pending);
455 je->files_open = cpu_to_le32(je->files_open);
456
457 for (i = 0; i < 2; i++) {
458 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
459 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
460 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
461 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
462 je->rate[i] = cpu_to_le32(je->rate[i]);
463 je->iops[i] = cpu_to_le32(je->iops[i]);
464 }
465
466 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
467 je->eta_sec = cpu_to_le64(je->eta_sec);
468 je->nr_threads = cpu_to_le32(je->nr_threads);
469
470 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
471 free(je);
472 return 0;
473}
474
475static int handle_command(struct fio_net_cmd *cmd)
476{
477 int ret;
478
479 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
480 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
481
482 switch (cmd->opcode) {
483 case FIO_NET_CMD_QUIT:
484 fio_terminate_threads(TERMINATE_ALL);
485 return -1;
486 case FIO_NET_CMD_EXIT:
487 exit_backend = 1;
488 return -1;
489 case FIO_NET_CMD_JOB:
490 ret = handle_job_cmd(cmd);
491 break;
492 case FIO_NET_CMD_JOBLINE:
493 ret = handle_jobline_cmd(cmd);
494 break;
495 case FIO_NET_CMD_PROBE:
496 ret = handle_probe_cmd(cmd);
497 break;
498 case FIO_NET_CMD_SEND_ETA:
499 ret = handle_send_eta_cmd(cmd);
500 break;
501 default:
502 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
503 ret = 1;
504 }
505
506 return ret;
507}
508
509static int handle_connection(int sk, int block)
510{
511 struct fio_net_cmd *cmd = NULL;
512 int ret = 0;
513
514 /* read forever */
515 while (!exit_backend) {
516 struct pollfd pfd = {
517 .fd = sk,
518 .events = POLLIN,
519 };
520
521 ret = 0;
522 do {
523 ret = poll(&pfd, 1, 100);
524 if (ret < 0) {
525 if (errno == EINTR)
526 break;
527 log_err("fio: poll: %s\n", strerror(errno));
528 break;
529 } else if (!ret) {
530 if (!block)
531 return 0;
532 continue;
533 }
534
535 if (pfd.revents & POLLIN)
536 break;
537 if (pfd.revents & (POLLERR|POLLHUP)) {
538 ret = 1;
539 break;
540 }
541 } while (!exit_backend);
542
543 if (ret < 0)
544 break;
545
546 cmd = fio_net_recv_cmd(sk);
547 if (!cmd) {
548 ret = -1;
549 break;
550 }
551
552 ret = handle_command(cmd);
553 if (ret)
554 break;
555
556 free(cmd);
557 cmd = NULL;
558 }
559
560 if (cmd)
561 free(cmd);
562
563 return ret;
564}
565
566void fio_server_idle_loop(void)
567{
568 if (!first_cmd_check) {
569 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
570 first_cmd_check = 1;
571 }
572 if (server_fd != -1)
573 handle_connection(server_fd, 0);
574}
575
576static int accept_loop(int listen_sk)
577{
578 struct sockaddr_in addr;
579 fio_socklen_t len = sizeof(addr);
580 struct pollfd pfd;
581 int ret, sk, flags, exitval = 0;
582
583 dprint(FD_NET, "server enter accept loop\n");
584
585 flags = fcntl(listen_sk, F_GETFL);
586 flags |= O_NONBLOCK;
587 fcntl(listen_sk, F_SETFL, flags);
588again:
589 pfd.fd = listen_sk;
590 pfd.events = POLLIN;
591 do {
592 ret = poll(&pfd, 1, 100);
593 if (ret < 0) {
594 if (errno == EINTR)
595 break;
596 log_err("fio: poll: %s\n", strerror(errno));
597 goto out;
598 } else if (!ret)
599 continue;
600
601 if (pfd.revents & POLLIN)
602 break;
603 } while (!exit_backend);
604
605 if (exit_backend)
606 goto out;
607
608 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
609 if (sk < 0) {
610 log_err("fio: accept: %s\n", strerror(errno));
611 return -1;
612 }
613
614 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
615
616 server_fd = sk;
617
618 exitval = handle_connection(sk, 1);
619
620 server_fd = -1;
621 close(sk);
622
623 if (!exit_backend)
624 goto again;
625
626out:
627 return exitval;
628}
629
630int fio_server_text_output(int level, const char *buf, size_t len)
631{
632 struct cmd_text_pdu *pdu;
633 unsigned int tlen;
634 struct timeval tv;
635
636 if (server_fd == -1)
637 return log_local_buf(buf, len);
638
639 tlen = sizeof(*pdu) + len;
640 pdu = malloc(tlen);
641
642 pdu->level = __cpu_to_le32(level);
643 pdu->buf_len = __cpu_to_le32(len);
644
645 gettimeofday(&tv, NULL);
646 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
647 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
648
649 memcpy(pdu->buf, buf, len);
650
651 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
652 free(pdu);
653 return len;
654}
655
656static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
657{
658 dst->max_val = cpu_to_le64(src->max_val);
659 dst->min_val = cpu_to_le64(src->min_val);
660 dst->samples = cpu_to_le64(src->samples);
661
662 /*
663 * Encode to IEEE 754 for network transfer
664 */
665 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
666 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
667}
668
669static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
670{
671 int i;
672
673 for (i = 0; i < 2; i++) {
674 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
675 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
676 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
677 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
678 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
679 dst->agg[i] = cpu_to_le64(src->agg[i]);
680 }
681
682 dst->kb_base = cpu_to_le32(src->kb_base);
683 dst->groupid = cpu_to_le32(src->groupid);
684}
685
686/*
687 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
688 * into a single payload.
689 */
690void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
691{
692 struct cmd_ts_pdu p;
693 int i, j;
694
695 dprint(FD_NET, "server sending end stats\n");
696
697 memset(&p, 0, sizeof(p));
698
699 strcpy(p.ts.name, ts->name);
700 strcpy(p.ts.verror, ts->verror);
701 strcpy(p.ts.description, ts->description);
702
703 p.ts.error = cpu_to_le32(ts->error);
704 p.ts.groupid = cpu_to_le32(ts->groupid);
705 p.ts.pid = cpu_to_le32(ts->pid);
706 p.ts.members = cpu_to_le32(ts->members);
707
708 for (i = 0; i < 2; i++) {
709 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
710 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
711 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
712 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
713 }
714
715 p.ts.usr_time = cpu_to_le64(ts->usr_time);
716 p.ts.sys_time = cpu_to_le64(ts->sys_time);
717 p.ts.ctx = cpu_to_le64(ts->ctx);
718 p.ts.minf = cpu_to_le64(ts->minf);
719 p.ts.majf = cpu_to_le64(ts->majf);
720 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
721
722 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
723 fio_fp64_t *src = &ts->percentile_list[i];
724 fio_fp64_t *dst = &p.ts.percentile_list[i];
725
726 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
727 }
728
729 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
730 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
731 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
732 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
733 }
734
735 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
736 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
737 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
738 }
739
740 for (i = 0; i < 2; i++)
741 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
742 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
743
744 for (i = 0; i < 3; i++) {
745 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
746 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
747 }
748
749 p.ts.total_submit = cpu_to_le64(ts->total_submit);
750 p.ts.total_complete = cpu_to_le64(ts->total_complete);
751
752 for (i = 0; i < 2; i++) {
753 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
754 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
755 }
756
757 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
758 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
759 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
760 p.ts.first_error = cpu_to_le32(ts->first_error);
761 p.ts.kb_base = cpu_to_le32(ts->kb_base);
762
763 convert_gs(&p.rs, rs);
764
765 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
766}
767
768void fio_server_send_gs(struct group_run_stats *rs)
769{
770 struct group_run_stats gs;
771
772 dprint(FD_NET, "server sending group run stats\n");
773
774 convert_gs(&gs, rs);
775 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
776}
777
778static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
779{
780 int i;
781
782 for (i = 0; i < 2; i++) {
783 dst->ios[i] = cpu_to_le32(src->ios[i]);
784 dst->merges[i] = cpu_to_le32(src->merges[i]);
785 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
786 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
787 }
788
789 dst->io_ticks = cpu_to_le32(src->io_ticks);
790 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
791 dst->slavecount = cpu_to_le32(src->slavecount);
792 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
793}
794
795static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
796{
797 int i;
798
799 strcpy((char *) dst->name, (char *) src->name);
800
801 for (i = 0; i < 2; i++) {
802 dst->ios[i] = cpu_to_le32(src->ios[i]);
803 dst->merges[i] = cpu_to_le32(src->merges[i]);
804 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
805 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
806 }
807
808 dst->io_ticks = cpu_to_le32(src->io_ticks);
809 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
810 dst->msec = cpu_to_le64(src->msec);
811}
812
813void fio_server_send_du(void)
814{
815 struct disk_util *du;
816 struct flist_head *entry;
817 struct cmd_du_pdu pdu;
818
819 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
820
821 memset(&pdu, 0, sizeof(pdu));
822
823 flist_for_each(entry, &disk_list) {
824 du = flist_entry(entry, struct disk_util, list);
825
826 convert_dus(&pdu.dus, &du->dus);
827 convert_agg(&pdu.agg, &du->agg);
828
829 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
830 }
831}
832
833void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
834{
835 struct cmd_add_job_pdu pdu;
836
837 convert_thread_options_to_net(&pdu.top, o);
838
839 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
840}
841
842static int fio_init_server_ip(void)
843{
844 struct sockaddr *addr;
845 fio_socklen_t socklen;
846 int sk, opt;
847
848 if (use_ipv6)
849 sk = socket(AF_INET6, SOCK_STREAM, 0);
850 else
851 sk = socket(AF_INET, SOCK_STREAM, 0);
852
853 if (sk < 0) {
854 log_err("fio: socket: %s\n", strerror(errno));
855 return -1;
856 }
857
858 opt = 1;
859 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
860 log_err("fio: setsockopt: %s\n", strerror(errno));
861 close(sk);
862 return -1;
863 }
864#ifdef SO_REUSEPORT
865 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
866 log_err("fio: setsockopt: %s\n", strerror(errno));
867 close(sk);
868 return -1;
869 }
870#endif
871
872 if (use_ipv6) {
873 addr = (struct sockaddr *) &saddr_in6;
874 socklen = sizeof(saddr_in6);
875 saddr_in6.sin6_family = AF_INET6;
876 } else {
877 addr = (struct sockaddr *) &saddr_in;
878 socklen = sizeof(saddr_in);
879 saddr_in.sin_family = AF_INET;
880 }
881
882 if (bind(sk, addr, socklen) < 0) {
883 log_err("fio: bind: %s\n", strerror(errno));
884 close(sk);
885 return -1;
886 }
887
888 return sk;
889}
890
891static int fio_init_server_sock(void)
892{
893 struct sockaddr_un addr;
894 fio_socklen_t len;
895 mode_t mode;
896 int sk;
897
898 sk = socket(AF_UNIX, SOCK_STREAM, 0);
899 if (sk < 0) {
900 log_err("fio: socket: %s\n", strerror(errno));
901 return -1;
902 }
903
904 mode = umask(000);
905
906 memset(&addr, 0, sizeof(addr));
907 addr.sun_family = AF_UNIX;
908 strcpy(addr.sun_path, bind_sock);
909 unlink(bind_sock);
910
911 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
912
913 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
914 log_err("fio: bind: %s\n", strerror(errno));
915 close(sk);
916 return -1;
917 }
918
919 umask(mode);
920 return sk;
921}
922
923static int fio_init_server_connection(void)
924{
925 char bind_str[128];
926 int sk;
927
928 dprint(FD_NET, "starting server\n");
929
930 if (!bind_sock)
931 sk = fio_init_server_ip();
932 else
933 sk = fio_init_server_sock();
934
935 if (sk < 0)
936 return sk;
937
938 if (!bind_sock) {
939 char *p, port[16];
940 const void *src;
941 int af;
942
943 if (use_ipv6) {
944 af = AF_INET6;
945 src = &saddr_in6.sin6_addr;
946 } else {
947 af = AF_INET;
948 src = &saddr_in.sin_addr;
949 }
950
951 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
952
953 sprintf(port, ",%u", fio_net_port);
954 if (p)
955 strcat(p, port);
956 else
957 strcpy(bind_str, port);
958 } else
959 strcpy(bind_str, bind_sock);
960
961 log_info("fio: server listening on %s\n", bind_str);
962
963 if (listen(sk, 0) < 0) {
964 log_err("fio: listen: %s\n", strerror(errno));
965 return -1;
966 }
967
968 return sk;
969}
970
971int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
972 struct in6_addr *inp6)
973
974{
975 int ret = 0;
976
977 if (*ipv6)
978 ret = inet_pton(AF_INET6, host, inp6);
979 else
980 ret = inet_pton(AF_INET, host, inp);
981
982 if (ret != 1) {
983 struct hostent *hent;
984
985 hent = gethostbyname(host);
986 if (!hent) {
987 log_err("fio: failed to resolve <%s>\n", host);
988 return 0;
989 }
990
991 if (*ipv6) {
992 if (hent->h_addrtype != AF_INET6) {
993 log_info("fio: falling back to IPv4\n");
994 *ipv6 = 0;
995 } else
996 memcpy(inp6, hent->h_addr_list[0], 16);
997 }
998 if (!*ipv6) {
999 if (hent->h_addrtype != AF_INET) {
1000 log_err("fio: lookup type mismatch\n");
1001 return 0;
1002 }
1003 memcpy(inp, hent->h_addr_list[0], 4);
1004 }
1005 ret = 1;
1006 }
1007
1008 return !(ret == 1);
1009}
1010
1011/*
1012 * Parse a host/ip/port string. Reads from 'str'.
1013 *
1014 * Outputs:
1015 *
1016 * For IPv4:
1017 * *ptr is the host, *port is the port, inp is the destination.
1018 * For IPv6:
1019 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1020 * For local domain sockets:
1021 * *ptr is the filename, *is_sock is 1.
1022 */
1023int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1024 int *port, struct in_addr *inp,
1025 struct in6_addr *inp6, int *ipv6)
1026{
1027 const char *host = str;
1028 char *portp;
1029 int lport = 0;
1030
1031 *ptr = NULL;
1032 *is_sock = 0;
1033 *port = fio_net_port;
1034 *ipv6 = 0;
1035
1036 if (!strncmp(str, "sock:", 5)) {
1037 *ptr = strdup(str + 5);
1038 *is_sock = 1;
1039
1040 return 0;
1041 }
1042
1043 /*
1044 * Is it ip:<ip or host>:port
1045 */
1046 if (!strncmp(host, "ip:", 3))
1047 host += 3;
1048 else if (!strncmp(host, "ip4:", 4))
1049 host += 4;
1050 else if (!strncmp(host, "ip6:", 4)) {
1051 host += 4;
1052 *ipv6 = 1;
1053 } else if (host[0] == ':') {
1054 /* String is :port */
1055 host++;
1056 lport = atoi(host);
1057 if (!lport || lport > 65535) {
1058 log_err("fio: bad server port %u\n", port);
1059 return 1;
1060 }
1061 /* no hostname given, we are done */
1062 *port = lport;
1063 return 0;
1064 }
1065
1066 /*
1067 * If no port seen yet, check if there's a last ':' at the end
1068 */
1069 if (!lport) {
1070 portp = strchr(host, ',');
1071 if (portp) {
1072 *portp = '\0';
1073 portp++;
1074 lport = atoi(portp);
1075 if (!lport || lport > 65535) {
1076 log_err("fio: bad server port %u\n", port);
1077 return 1;
1078 }
1079 }
1080 }
1081
1082 if (lport)
1083 *port = lport;
1084
1085 if (!strlen(host))
1086 return 0;
1087
1088 *ptr = strdup(host);
1089
1090 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1091 free(*ptr);
1092 *ptr = NULL;
1093 return 1;
1094 }
1095
1096 if (*port == 0)
1097 *port = fio_net_port;
1098
1099 return 0;
1100}
1101
1102/*
1103 * Server arg should be one of:
1104 *
1105 * sock:/path/to/socket
1106 * ip:1.2.3.4
1107 * 1.2.3.4
1108 *
1109 * Where sock uses unix domain sockets, and ip binds the server to
1110 * a specific interface. If no arguments are given to the server, it
1111 * uses IP and binds to 0.0.0.0.
1112 *
1113 */
1114static int fio_handle_server_arg(void)
1115{
1116 int port = fio_net_port;
1117 int is_sock, ret = 0;
1118
1119 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1120
1121 if (!fio_server_arg)
1122 goto out;
1123
1124 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1125 &port, &saddr_in.sin_addr,
1126 &saddr_in6.sin6_addr, &use_ipv6);
1127
1128 if (!is_sock && bind_sock) {
1129 free(bind_sock);
1130 bind_sock = NULL;
1131 }
1132
1133out:
1134 fio_net_port = port;
1135 saddr_in.sin_port = htons(port);
1136 saddr_in6.sin6_port = htons(port);
1137 return ret;
1138}
1139
1140static int fio_server(void)
1141{
1142 int sk, ret;
1143
1144 dprint(FD_NET, "starting server\n");
1145
1146 if (fio_handle_server_arg())
1147 return -1;
1148
1149 sk = fio_init_server_connection();
1150 if (sk < 0)
1151 return -1;
1152
1153 ret = accept_loop(sk);
1154
1155 close(sk);
1156
1157 if (fio_server_arg) {
1158 free(fio_server_arg);
1159 fio_server_arg = NULL;
1160 }
1161 if (bind_sock)
1162 free(bind_sock);
1163
1164 return ret;
1165}
1166
1167void fio_server_got_signal(int signal)
1168{
1169 if (signal == SIGPIPE)
1170 server_fd = -1;
1171 else {
1172 log_info("\nfio: terminating on signal %d\n", signal);
1173 exit_backend = 1;
1174 }
1175}
1176
1177static int check_existing_pidfile(const char *pidfile)
1178{
1179 struct stat sb;
1180 char buf[16];
1181 pid_t pid;
1182 FILE *f;
1183
1184 if (stat(pidfile, &sb))
1185 return 0;
1186
1187 f = fopen(pidfile, "r");
1188 if (!f)
1189 return 0;
1190
1191 if (fread(buf, sb.st_size, 1, f) <= 0) {
1192 fclose(f);
1193 return 1;
1194 }
1195 fclose(f);
1196
1197 pid = atoi(buf);
1198 if (kill(pid, SIGCONT) < 0)
1199 return errno != ESRCH;
1200
1201 return 1;
1202}
1203
1204static int write_pid(pid_t pid, const char *pidfile)
1205{
1206 FILE *fpid;
1207
1208 fpid = fopen(pidfile, "w");
1209 if (!fpid) {
1210 log_err("fio: failed opening pid file %s\n", pidfile);
1211 return 1;
1212 }
1213
1214 fprintf(fpid, "%u\n", (unsigned int) pid);
1215 fclose(fpid);
1216 return 0;
1217}
1218
1219/*
1220 * If pidfile is specified, background us.
1221 */
1222int fio_start_server(char *pidfile)
1223{
1224 pid_t pid;
1225 int ret;
1226
1227#if defined(WIN32)
1228 WSADATA wsd;
1229 WSAStartup(MAKEWORD(2,2), &wsd);
1230#endif
1231
1232 if (!pidfile)
1233 return fio_server();
1234
1235 if (check_existing_pidfile(pidfile)) {
1236 log_err("fio: pidfile %s exists and server appears alive\n",
1237 pidfile);
1238 return -1;
1239 }
1240
1241 pid = fork();
1242 if (pid < 0) {
1243 log_err("fio: failed server fork: %s", strerror(errno));
1244 free(pidfile);
1245 return -1;
1246 } else if (pid) {
1247 int ret = write_pid(pid, pidfile);
1248
1249 exit(ret);
1250 }
1251
1252 setsid();
1253 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1254 log_syslog = 1;
1255 close(STDIN_FILENO);
1256 close(STDOUT_FILENO);
1257 close(STDERR_FILENO);
1258 f_out = NULL;
1259 f_err = NULL;
1260
1261 ret = fio_server();
1262
1263 closelog();
1264 unlink(pidfile);
1265 free(pidfile);
1266 return ret;
1267}
1268
1269void fio_server_set_arg(const char *arg)
1270{
1271 fio_server_arg = strdup(arg);
1272}
fio - Flexible IO Tester