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axmap: fix bug with max_bs/min_bs ratio being > 64
[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
25int fio_net_port = 8765;
26
27int exit_backend = 0;
28
29static int server_fd = -1;
30static char *fio_server_arg;
31static char *bind_sock;
32static struct sockaddr_in saddr_in;
33static struct sockaddr_in6 saddr_in6;
34static int first_cmd_check;
35static int use_ipv6;
36
37static const char *fio_server_ops[FIO_NET_CMD_NR] = {
38 "",
39 "QUIT",
40 "EXIT",
41 "JOB",
42 "JOBLINE",
43 "TEXT",
44 "TS",
45 "GS",
46 "SEND_ETA",
47 "ETA",
48 "PROBE",
49 "START",
50 "STOP",
51 "DISK_UTIL",
52 "RUN",
53};
54
55const char *fio_server_op(unsigned int op)
56{
57 static char buf[32];
58
59 if (op < FIO_NET_CMD_NR)
60 return fio_server_ops[op];
61
62 sprintf(buf, "UNKNOWN/%d", op);
63 return buf;
64}
65
66int fio_send_data(int sk, const void *p, unsigned int len)
67{
68 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
69
70 do {
71 int ret = send(sk, p, len, 0);
72
73 if (ret > 0) {
74 len -= ret;
75 if (!len)
76 break;
77 p += ret;
78 continue;
79 } else if (!ret)
80 break;
81 else if (errno == EAGAIN || errno == EINTR)
82 continue;
83 else
84 break;
85 } while (!exit_backend);
86
87 if (!len)
88 return 0;
89
90 return 1;
91}
92
93int fio_recv_data(int sk, void *p, unsigned int len)
94{
95 do {
96 int ret = recv(sk, p, len, MSG_WAITALL);
97
98 if (ret > 0) {
99 len -= ret;
100 if (!len)
101 break;
102 p += ret;
103 continue;
104 } else if (!ret)
105 break;
106 else if (errno == EAGAIN || errno == EINTR)
107 continue;
108 else
109 break;
110 } while (!exit_backend);
111
112 if (!len)
113 return 0;
114
115 return -1;
116}
117
118static int verify_convert_cmd(struct fio_net_cmd *cmd)
119{
120 uint16_t crc;
121
122 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
123 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
124
125 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
126 if (crc != cmd->cmd_crc16) {
127 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
128 cmd->cmd_crc16, crc);
129 return 1;
130 }
131
132 cmd->version = le16_to_cpu(cmd->version);
133 cmd->opcode = le16_to_cpu(cmd->opcode);
134 cmd->flags = le32_to_cpu(cmd->flags);
135 cmd->tag = le64_to_cpu(cmd->tag);
136 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
137
138 switch (cmd->version) {
139 case FIO_SERVER_VER:
140 break;
141 default:
142 log_err("fio: bad server cmd version %d\n", cmd->version);
143 return 1;
144 }
145
146 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
147 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
148 return 1;
149 }
150
151 return 0;
152}
153
154/*
155 * Read (and defragment, if necessary) incoming commands
156 */
157struct fio_net_cmd *fio_net_recv_cmd(int sk)
158{
159 struct fio_net_cmd cmd, *cmdret = NULL;
160 size_t cmd_size = 0, pdu_offset = 0;
161 uint16_t crc;
162 int ret, first = 1;
163 void *pdu = NULL;
164
165 do {
166 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
167 if (ret)
168 break;
169
170 /* We have a command, verify it and swap if need be */
171 ret = verify_convert_cmd(&cmd);
172 if (ret)
173 break;
174
175 if (first) {
176 /* if this is text, add room for \0 at the end */
177 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
178 assert(!cmdret);
179 } else
180 cmd_size += cmd.pdu_len;
181
182 cmdret = realloc(cmdret, cmd_size);
183
184 if (first)
185 memcpy(cmdret, &cmd, sizeof(cmd));
186 else if (cmdret->opcode != cmd.opcode) {
187 log_err("fio: fragment opcode mismatch (%d != %d)\n",
188 cmdret->opcode, cmd.opcode);
189 ret = 1;
190 break;
191 }
192
193 if (!cmd.pdu_len)
194 break;
195
196 /* There's payload, get it */
197 pdu = (void *) cmdret->payload + pdu_offset;
198 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
199 if (ret)
200 break;
201
202 /* Verify payload crc */
203 crc = fio_crc16(pdu, cmd.pdu_len);
204 if (crc != cmd.pdu_crc16) {
205 log_err("fio: server bad crc on payload ");
206 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
207 ret = 1;
208 break;
209 }
210
211 pdu_offset += cmd.pdu_len;
212 if (!first)
213 cmdret->pdu_len += cmd.pdu_len;
214 first = 0;
215 } while (cmd.flags & FIO_NET_CMD_F_MORE);
216
217 if (ret) {
218 free(cmdret);
219 cmdret = NULL;
220 } else if (cmdret) {
221 /* zero-terminate text input */
222 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
223 cmdret->opcode == FIO_NET_CMD_JOB)) {
224 char *buf = (char *) cmdret->payload;
225
226 buf[cmdret->pdu_len ] = '\0';
227 }
228 /* frag flag is internal */
229 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
230 }
231
232 return cmdret;
233}
234
235void fio_net_cmd_crc(struct fio_net_cmd *cmd)
236{
237 uint32_t pdu_len;
238
239 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
240
241 pdu_len = le32_to_cpu(cmd->pdu_len);
242 if (pdu_len)
243 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
244}
245
246int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
247 uint64_t tag)
248{
249 struct fio_net_cmd *cmd = NULL;
250 size_t this_len, cur_len = 0;
251 int ret;
252
253 do {
254 this_len = size;
255 if (this_len > FIO_SERVER_MAX_PDU)
256 this_len = FIO_SERVER_MAX_PDU;
257
258 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
259 if (cmd)
260 free(cmd);
261
262 cur_len = sizeof(*cmd) + this_len;
263 cmd = malloc(cur_len);
264 }
265
266 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
267
268 if (this_len < size)
269 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
270
271 fio_net_cmd_crc(cmd);
272
273 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
274 size -= this_len;
275 buf += this_len;
276 } while (!ret && size);
277
278 if (cmd)
279 free(cmd);
280
281 return ret;
282}
283
284static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
285{
286 struct fio_net_cmd cmd;
287
288 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
289 fio_net_cmd_crc(&cmd);
290
291 return fio_send_data(sk, &cmd, sizeof(cmd));
292}
293
294/*
295 * If 'list' is non-NULL, then allocate and store the sent command for
296 * later verification.
297 */
298int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
299 struct flist_head *list)
300{
301 struct fio_net_int_cmd *cmd;
302 int ret;
303
304 if (!list)
305 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
306
307 cmd = malloc(sizeof(*cmd));
308
309 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
310 fio_net_cmd_crc(&cmd->cmd);
311
312 INIT_FLIST_HEAD(&cmd->list);
313 fio_gettime(&cmd->tv, NULL);
314 cmd->saved_tag = tag;
315
316 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
317 if (ret) {
318 free(cmd);
319 return ret;
320 }
321
322 flist_add_tail(&cmd->list, list);
323 return 0;
324}
325
326static int fio_server_send_quit_cmd(void)
327{
328 dprint(FD_NET, "server: sending quit\n");
329 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
330}
331
332static int handle_job_cmd(struct fio_net_cmd *cmd)
333{
334 char *buf = (char *) cmd->payload;
335 struct cmd_start_pdu spdu;
336 struct cmd_end_pdu epdu;
337 int ret;
338
339 if (parse_jobs_ini(buf, 1, 0)) {
340 fio_server_send_quit_cmd();
341 return -1;
342 }
343
344 spdu.jobs = cpu_to_le32(thread_number);
345 spdu.stat_outputs = cpu_to_le32(stat_number);
346 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
347
348 ret = fio_backend();
349
350 epdu.error = ret;
351 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
352
353 fio_server_send_quit_cmd();
354 reset_fio_state();
355 return ret;
356}
357
358static int handle_jobline_cmd(struct fio_net_cmd *cmd)
359{
360 void *pdu = cmd->payload;
361 struct cmd_single_line_pdu *cslp;
362 struct cmd_line_pdu *clp;
363 unsigned long offset;
364 char **argv;
365 int ret, i;
366
367 clp = pdu;
368 clp->lines = le16_to_cpu(clp->lines);
369 argv = malloc(clp->lines * sizeof(char *));
370 offset = sizeof(*clp);
371
372 dprint(FD_NET, "server: %d command line args\n", clp->lines);
373
374 for (i = 0; i < clp->lines; i++) {
375 cslp = pdu + offset;
376 argv[i] = (char *) cslp->text;
377
378 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
379 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
380 }
381
382 if (parse_cmd_line(clp->lines, argv)) {
383 fio_server_send_quit_cmd();
384 free(argv);
385 return -1;
386 }
387
388 free(argv);
389
390 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
391
392 ret = fio_backend();
393 fio_server_send_quit_cmd();
394 reset_fio_state();
395 return ret;
396}
397
398static int handle_probe_cmd(struct fio_net_cmd *cmd)
399{
400 struct cmd_probe_pdu probe;
401
402 dprint(FD_NET, "server: sending probe reply\n");
403
404 memset(&probe, 0, sizeof(probe));
405 gethostname((char *) probe.hostname, sizeof(probe.hostname));
406#ifdef CONFIG_BIG_ENDIAN
407 probe.bigendian = 1;
408#endif
409 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
410
411 probe.os = FIO_OS;
412 probe.arch = FIO_ARCH;
413
414 probe.bpp = sizeof(void *);
415
416 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
417}
418
419static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
420{
421 struct jobs_eta *je;
422 size_t size;
423 int i;
424
425 if (!thread_number)
426 return 0;
427
428 size = sizeof(*je) + thread_number * sizeof(char) + 1;
429 je = malloc(size);
430 memset(je, 0, size);
431
432 if (!calc_thread_status(je, 1)) {
433 free(je);
434 return 0;
435 }
436
437 dprint(FD_NET, "server sending status\n");
438
439 je->nr_running = cpu_to_le32(je->nr_running);
440 je->nr_ramp = cpu_to_le32(je->nr_ramp);
441 je->nr_pending = cpu_to_le32(je->nr_pending);
442 je->files_open = cpu_to_le32(je->files_open);
443 je->m_rate = cpu_to_le32(je->m_rate);
444 je->t_rate = cpu_to_le32(je->t_rate);
445 je->m_iops = cpu_to_le32(je->m_iops);
446 je->t_iops = cpu_to_le32(je->t_iops);
447
448 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
449 je->rate[i] = cpu_to_le32(je->rate[i]);
450 je->iops[i] = cpu_to_le32(je->iops[i]);
451 }
452
453 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
454 je->eta_sec = cpu_to_le64(je->eta_sec);
455 je->is_pow2 = cpu_to_le32(je->is_pow2);
456
457 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
458 free(je);
459 return 0;
460}
461
462static int handle_command(struct fio_net_cmd *cmd)
463{
464 int ret;
465
466 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
467 fio_server_op(cmd->opcode), cmd->pdu_len,
468 (unsigned long long) cmd->tag);
469
470 switch (cmd->opcode) {
471 case FIO_NET_CMD_QUIT:
472 fio_terminate_threads(TERMINATE_ALL);
473 return -1;
474 case FIO_NET_CMD_EXIT:
475 exit_backend = 1;
476 return -1;
477 case FIO_NET_CMD_JOB:
478 ret = handle_job_cmd(cmd);
479 break;
480 case FIO_NET_CMD_JOBLINE:
481 ret = handle_jobline_cmd(cmd);
482 break;
483 case FIO_NET_CMD_PROBE:
484 ret = handle_probe_cmd(cmd);
485 break;
486 case FIO_NET_CMD_SEND_ETA:
487 ret = handle_send_eta_cmd(cmd);
488 break;
489 default:
490 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
491 ret = 1;
492 }
493
494 return ret;
495}
496
497static int handle_connection(int sk, int block)
498{
499 struct fio_net_cmd *cmd = NULL;
500 int ret = 0;
501
502 /* read forever */
503 while (!exit_backend) {
504 struct pollfd pfd = {
505 .fd = sk,
506 .events = POLLIN,
507 };
508
509 ret = 0;
510 do {
511 ret = poll(&pfd, 1, 100);
512 if (ret < 0) {
513 if (errno == EINTR)
514 break;
515 log_err("fio: poll: %s\n", strerror(errno));
516 break;
517 } else if (!ret) {
518 if (!block)
519 return 0;
520 continue;
521 }
522
523 if (pfd.revents & POLLIN)
524 break;
525 if (pfd.revents & (POLLERR|POLLHUP)) {
526 ret = 1;
527 break;
528 }
529 } while (!exit_backend);
530
531 if (ret < 0)
532 break;
533
534 cmd = fio_net_recv_cmd(sk);
535 if (!cmd) {
536 ret = -1;
537 break;
538 }
539
540 ret = handle_command(cmd);
541 if (ret)
542 break;
543
544 free(cmd);
545 cmd = NULL;
546 }
547
548 if (cmd)
549 free(cmd);
550
551 return ret;
552}
553
554void fio_server_idle_loop(void)
555{
556 if (!first_cmd_check)
557 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
558 if (server_fd != -1)
559 handle_connection(server_fd, 0);
560}
561
562static int accept_loop(int listen_sk)
563{
564 struct sockaddr_in addr;
565 socklen_t len = sizeof(addr);
566 struct pollfd pfd;
567 int ret, sk, flags, exitval = 0;
568
569 dprint(FD_NET, "server enter accept loop\n");
570
571 flags = fcntl(listen_sk, F_GETFL);
572 flags |= O_NONBLOCK;
573 fcntl(listen_sk, F_SETFL, flags);
574again:
575 pfd.fd = listen_sk;
576 pfd.events = POLLIN;
577 do {
578 ret = poll(&pfd, 1, 100);
579 if (ret < 0) {
580 if (errno == EINTR)
581 break;
582 log_err("fio: poll: %s\n", strerror(errno));
583 goto out;
584 } else if (!ret)
585 continue;
586
587 if (pfd.revents & POLLIN)
588 break;
589 } while (!exit_backend);
590
591 if (exit_backend)
592 goto out;
593
594 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
595 if (sk < 0) {
596 log_err("fio: accept: %s\n", strerror(errno));
597 return -1;
598 }
599
600 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
601
602 server_fd = sk;
603
604 exitval = handle_connection(sk, 1);
605
606 server_fd = -1;
607 close(sk);
608
609 if (!exit_backend)
610 goto again;
611
612out:
613 return exitval;
614}
615
616int fio_server_text_output(const char *buf, size_t len)
617{
618 if (server_fd != -1)
619 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
620
621 return log_local_buf(buf, len);
622}
623
624static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
625{
626 dst->max_val = cpu_to_le64(src->max_val);
627 dst->min_val = cpu_to_le64(src->min_val);
628 dst->samples = cpu_to_le64(src->samples);
629
630 /*
631 * Encode to IEEE 754 for network transfer
632 */
633 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
634 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
635}
636
637static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
638{
639 int i;
640
641 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
642 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
643 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
644 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
645 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
646 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
647 dst->agg[i] = cpu_to_le64(src->agg[i]);
648 }
649
650 dst->kb_base = cpu_to_le32(src->kb_base);
651 dst->groupid = cpu_to_le32(src->groupid);
652 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
653}
654
655/*
656 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
657 * into a single payload.
658 */
659void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
660{
661 struct cmd_ts_pdu p;
662 int i, j;
663
664 dprint(FD_NET, "server sending end stats\n");
665
666 memset(&p, 0, sizeof(p));
667
668 strcpy(p.ts.name, ts->name);
669 strcpy(p.ts.verror, ts->verror);
670 strcpy(p.ts.description, ts->description);
671
672 p.ts.error = cpu_to_le32(ts->error);
673 p.ts.groupid = cpu_to_le32(ts->groupid);
674 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
675 p.ts.pid = cpu_to_le32(ts->pid);
676 p.ts.members = cpu_to_le32(ts->members);
677 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
678
679 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
680 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
681 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
682 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
683 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
684 }
685
686 p.ts.usr_time = cpu_to_le64(ts->usr_time);
687 p.ts.sys_time = cpu_to_le64(ts->sys_time);
688 p.ts.ctx = cpu_to_le64(ts->ctx);
689 p.ts.minf = cpu_to_le64(ts->minf);
690 p.ts.majf = cpu_to_le64(ts->majf);
691 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
692
693 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
694 fio_fp64_t *src = &ts->percentile_list[i];
695 fio_fp64_t *dst = &p.ts.percentile_list[i];
696
697 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
698 }
699
700 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
701 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
702 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
703 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
704 }
705
706 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
707 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
708 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
709 }
710
711 for (i = 0; i < DDIR_RWDIR_CNT; i++)
712 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
713 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
714
715 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
716 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
717 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
718 }
719
720 p.ts.total_submit = cpu_to_le64(ts->total_submit);
721 p.ts.total_complete = cpu_to_le64(ts->total_complete);
722
723 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
724 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
725 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
726 }
727
728 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
729 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
730 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
731 p.ts.first_error = cpu_to_le32(ts->first_error);
732 p.ts.kb_base = cpu_to_le32(ts->kb_base);
733
734 convert_gs(&p.rs, rs);
735
736 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
737}
738
739void fio_server_send_gs(struct group_run_stats *rs)
740{
741 struct group_run_stats gs;
742
743 dprint(FD_NET, "server sending group run stats\n");
744
745 convert_gs(&gs, rs);
746 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
747}
748
749static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
750{
751 int i;
752
753 for (i = 0; i < 2; i++) {
754 dst->ios[i] = cpu_to_le32(src->ios[i]);
755 dst->merges[i] = cpu_to_le32(src->merges[i]);
756 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
757 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
758 }
759
760 dst->io_ticks = cpu_to_le32(src->io_ticks);
761 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
762 dst->slavecount = cpu_to_le32(src->slavecount);
763 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
764}
765
766static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
767{
768 int i;
769
770 strcpy((char *) dst->name, (char *) src->name);
771
772 for (i = 0; i < 2; i++) {
773 dst->ios[i] = cpu_to_le32(src->ios[i]);
774 dst->merges[i] = cpu_to_le32(src->merges[i]);
775 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
776 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
777 }
778
779 dst->io_ticks = cpu_to_le32(src->io_ticks);
780 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
781 dst->msec = cpu_to_le64(src->msec);
782}
783
784void fio_server_send_du(void)
785{
786 struct disk_util *du;
787 struct flist_head *entry;
788 struct cmd_du_pdu pdu;
789
790 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
791
792 memset(&pdu, 0, sizeof(pdu));
793
794 flist_for_each(entry, &disk_list) {
795 du = flist_entry(entry, struct disk_util, list);
796
797 convert_dus(&pdu.dus, &du->dus);
798 convert_agg(&pdu.agg, &du->agg);
799
800 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
801 }
802}
803
804int fio_server_log(const char *format, ...)
805{
806 char buffer[1024];
807 va_list args;
808 size_t len;
809
810 dprint(FD_NET, "server log\n");
811
812 va_start(args, format);
813 len = vsnprintf(buffer, sizeof(buffer), format, args);
814 va_end(args);
815 len = min(len, sizeof(buffer) - 1);
816
817 return fio_server_text_output(buffer, len);
818}
819
820static int fio_init_server_ip(void)
821{
822 struct sockaddr *addr;
823 socklen_t socklen;
824 int sk, opt;
825
826 if (use_ipv6)
827 sk = socket(AF_INET6, SOCK_STREAM, 0);
828 else
829 sk = socket(AF_INET, SOCK_STREAM, 0);
830
831 if (sk < 0) {
832 log_err("fio: socket: %s\n", strerror(errno));
833 return -1;
834 }
835
836 opt = 1;
837 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
838 log_err("fio: setsockopt: %s\n", strerror(errno));
839 close(sk);
840 return -1;
841 }
842#ifdef SO_REUSEPORT
843 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
844 log_err("fio: setsockopt: %s\n", strerror(errno));
845 close(sk);
846 return -1;
847 }
848#endif
849
850 if (use_ipv6) {
851 addr = (struct sockaddr *) &saddr_in6;
852 socklen = sizeof(saddr_in6);
853 saddr_in6.sin6_family = AF_INET6;
854 } else {
855 addr = (struct sockaddr *) &saddr_in;
856 socklen = sizeof(saddr_in);
857 saddr_in.sin_family = AF_INET;
858 }
859
860 if (bind(sk, addr, socklen) < 0) {
861 log_err("fio: bind: %s\n", strerror(errno));
862 close(sk);
863 return -1;
864 }
865
866 return sk;
867}
868
869static int fio_init_server_sock(void)
870{
871 struct sockaddr_un addr;
872 socklen_t len;
873 mode_t mode;
874 int sk;
875
876 sk = socket(AF_UNIX, SOCK_STREAM, 0);
877 if (sk < 0) {
878 log_err("fio: socket: %s\n", strerror(errno));
879 return -1;
880 }
881
882 mode = umask(000);
883
884 memset(&addr, 0, sizeof(addr));
885 addr.sun_family = AF_UNIX;
886 strcpy(addr.sun_path, bind_sock);
887 unlink(bind_sock);
888
889 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
890
891 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
892 log_err("fio: bind: %s\n", strerror(errno));
893 close(sk);
894 return -1;
895 }
896
897 umask(mode);
898 return sk;
899}
900
901static int fio_init_server_connection(void)
902{
903 char bind_str[128];
904 int sk;
905
906 dprint(FD_NET, "starting server\n");
907
908 if (!bind_sock)
909 sk = fio_init_server_ip();
910 else
911 sk = fio_init_server_sock();
912
913 if (sk < 0)
914 return sk;
915
916 if (!bind_sock) {
917 char *p, port[16];
918 const void *src;
919 int af;
920
921 if (use_ipv6) {
922 af = AF_INET6;
923 src = &saddr_in6.sin6_addr;
924 } else {
925 af = AF_INET;
926 src = &saddr_in.sin_addr;
927 }
928
929 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
930
931 sprintf(port, ",%u", fio_net_port);
932 if (p)
933 strcat(p, port);
934 else
935 strcpy(bind_str, port);
936 } else
937 strcpy(bind_str, bind_sock);
938
939 log_info("fio: server listening on %s\n", bind_str);
940
941 if (listen(sk, 0) < 0) {
942 log_err("fio: listen: %s\n", strerror(errno));
943 return -1;
944 }
945
946 return sk;
947}
948
949/*
950 * Parse a host/ip/port string. Reads from 'str'.
951 *
952 * Outputs:
953 *
954 * For IPv4:
955 * *ptr is the host, *port is the port, inp is the destination.
956 * For IPv6:
957 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
958 * For local domain sockets:
959 * *ptr is the filename, *is_sock is 1.
960 */
961int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
962 int *port, struct in_addr *inp,
963 struct in6_addr *inp6, int *ipv6)
964{
965 const char *host = str;
966 char *portp;
967 int ret, lport = 0;
968
969 *ptr = NULL;
970 *is_sock = 0;
971 *port = fio_net_port;
972 *ipv6 = 0;
973
974 if (!strncmp(str, "sock:", 5)) {
975 *ptr = strdup(str + 5);
976 *is_sock = 1;
977
978 return 0;
979 }
980
981 /*
982 * Is it ip:<ip or host>:port
983 */
984 if (!strncmp(host, "ip:", 3))
985 host += 3;
986 else if (!strncmp(host, "ip4:", 4))
987 host += 4;
988 else if (!strncmp(host, "ip6:", 4)) {
989 host += 4;
990 *ipv6 = 1;
991 } else if (host[0] == ':') {
992 /* String is :port */
993 host++;
994 lport = atoi(host);
995 if (!lport || lport > 65535) {
996 log_err("fio: bad server port %u\n", port);
997 return 1;
998 }
999 /* no hostname given, we are done */
1000 *port = lport;
1001 return 0;
1002 }
1003
1004 /*
1005 * If no port seen yet, check if there's a last ':' at the end
1006 */
1007 if (!lport) {
1008 portp = strchr(host, ',');
1009 if (portp) {
1010 *portp = '\0';
1011 portp++;
1012 lport = atoi(portp);
1013 if (!lport || lport > 65535) {
1014 log_err("fio: bad server port %u\n", port);
1015 return 1;
1016 }
1017 }
1018 }
1019
1020 if (lport)
1021 *port = lport;
1022
1023 if (!strlen(host))
1024 return 0;
1025
1026 *ptr = strdup(host);
1027
1028 if (*ipv6)
1029 ret = inet_pton(AF_INET6, host, inp6);
1030 else
1031 ret = inet_pton(AF_INET, host, inp);
1032
1033 if (ret != 1) {
1034 struct hostent *hent;
1035
1036 hent = gethostbyname(host);
1037 if (!hent) {
1038 log_err("fio: failed to resolve <%s>\n", host);
1039 free(*ptr);
1040 *ptr = NULL;
1041 return 1;
1042 }
1043
1044 if (*ipv6) {
1045 if (hent->h_addrtype != AF_INET6) {
1046 log_info("fio: falling back to IPv4\n");
1047 *ipv6 = 0;
1048 } else
1049 memcpy(inp6, hent->h_addr_list[0], 16);
1050 }
1051 if (!*ipv6) {
1052 if (hent->h_addrtype != AF_INET) {
1053 log_err("fio: lookup type mismatch\n");
1054 free(*ptr);
1055 *ptr = NULL;
1056 return 1;
1057 }
1058 memcpy(inp, hent->h_addr_list[0], 4);
1059 }
1060 }
1061
1062 if (*port == 0)
1063 *port = fio_net_port;
1064
1065 return 0;
1066}
1067
1068/*
1069 * Server arg should be one of:
1070 *
1071 * sock:/path/to/socket
1072 * ip:1.2.3.4
1073 * 1.2.3.4
1074 *
1075 * Where sock uses unix domain sockets, and ip binds the server to
1076 * a specific interface. If no arguments are given to the server, it
1077 * uses IP and binds to 0.0.0.0.
1078 *
1079 */
1080static int fio_handle_server_arg(void)
1081{
1082 int port = fio_net_port;
1083 int is_sock, ret = 0;
1084
1085 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1086
1087 if (!fio_server_arg)
1088 goto out;
1089
1090 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1091 &port, &saddr_in.sin_addr,
1092 &saddr_in6.sin6_addr, &use_ipv6);
1093
1094 if (!is_sock && bind_sock) {
1095 free(bind_sock);
1096 bind_sock = NULL;
1097 }
1098
1099out:
1100 fio_net_port = port;
1101 saddr_in.sin_port = htons(port);
1102 saddr_in6.sin6_port = htons(port);
1103 return ret;
1104}
1105
1106static int fio_server(void)
1107{
1108 int sk, ret;
1109
1110 dprint(FD_NET, "starting server\n");
1111
1112 if (fio_handle_server_arg())
1113 return -1;
1114
1115 sk = fio_init_server_connection();
1116 if (sk < 0)
1117 return -1;
1118
1119 ret = accept_loop(sk);
1120
1121 close(sk);
1122
1123 if (fio_server_arg) {
1124 free(fio_server_arg);
1125 fio_server_arg = NULL;
1126 }
1127 if (bind_sock)
1128 free(bind_sock);
1129
1130 return ret;
1131}
1132
1133void fio_server_got_signal(int signal)
1134{
1135 if (signal == SIGPIPE)
1136 server_fd = -1;
1137 else {
1138 log_info("\nfio: terminating on signal %d\n", signal);
1139 exit_backend = 1;
1140 }
1141}
1142
1143static int check_existing_pidfile(const char *pidfile)
1144{
1145 struct stat sb;
1146 char buf[16];
1147 pid_t pid;
1148 FILE *f;
1149
1150 if (stat(pidfile, &sb))
1151 return 0;
1152
1153 f = fopen(pidfile, "r");
1154 if (!f)
1155 return 0;
1156
1157 if (fread(buf, sb.st_size, 1, f) <= 0) {
1158 fclose(f);
1159 return 1;
1160 }
1161 fclose(f);
1162
1163 pid = atoi(buf);
1164 if (kill(pid, SIGCONT) < 0)
1165 return errno != ESRCH;
1166
1167 return 1;
1168}
1169
1170static int write_pid(pid_t pid, const char *pidfile)
1171{
1172 FILE *fpid;
1173
1174 fpid = fopen(pidfile, "w");
1175 if (!fpid) {
1176 log_err("fio: failed opening pid file %s\n", pidfile);
1177 return 1;
1178 }
1179
1180 fprintf(fpid, "%u\n", (unsigned int) pid);
1181 fclose(fpid);
1182 return 0;
1183}
1184
1185/*
1186 * If pidfile is specified, background us.
1187 */
1188int fio_start_server(char *pidfile)
1189{
1190 pid_t pid;
1191 int ret;
1192
1193#if defined(WIN32)
1194 WSADATA wsd;
1195 WSAStartup(MAKEWORD(2,2), &wsd);
1196#endif
1197
1198 if (!pidfile)
1199 return fio_server();
1200
1201 if (check_existing_pidfile(pidfile)) {
1202 log_err("fio: pidfile %s exists and server appears alive\n",
1203 pidfile);
1204 return -1;
1205 }
1206
1207 pid = fork();
1208 if (pid < 0) {
1209 log_err("fio: failed server fork: %s", strerror(errno));
1210 free(pidfile);
1211 return -1;
1212 } else if (pid) {
1213 int ret = write_pid(pid, pidfile);
1214
1215 exit(ret);
1216 }
1217
1218 setsid();
1219 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1220 log_syslog = 1;
1221 close(STDIN_FILENO);
1222 close(STDOUT_FILENO);
1223 close(STDERR_FILENO);
1224 f_out = NULL;
1225 f_err = NULL;
1226
1227 ret = fio_server();
1228
1229 closelog();
1230 unlink(pidfile);
1231 free(pidfile);
1232 return ret;
1233}
1234
1235void fio_server_set_arg(const char *arg)
1236{
1237 fio_server_arg = strdup(arg);
1238}
fio - Flexible IO Tester