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