projects / fio.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
Add completion latency percentiles to terse output format
[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 "ieee754.h"
24
25#include "fio_version.h"
26
27int fio_net_port = 8765;
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;
35
36static const char *fio_server_ops[FIO_NET_CMD_NR] = {
37 "",
38 "QUIT",
39 "EXIT",
40 "JOB",
41 "JOBLINE",
42 "TEXT",
43 "TS",
44 "GS",
45 "SEND_ETA",
46 "ETA",
47 "PROBE",
48 "START",
49 "STOP",
50 "DISK_UTIL",
51};
52
53const char *fio_server_op(unsigned int op)
54{
55 static char buf[32];
56
57 if (op < FIO_NET_CMD_NR)
58 return fio_server_ops[op];
59
60 sprintf(buf, "UNKNOWN/%d", op);
61 return buf;
62}
63
64int fio_send_data(int sk, const void *p, unsigned int len)
65{
66 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
67
68 do {
69 int ret = send(sk, p, len, 0);
70
71 if (ret > 0) {
72 len -= ret;
73 if (!len)
74 break;
75 p += ret;
76 continue;
77 } else if (!ret)
78 break;
79 else if (errno == EAGAIN || errno == EINTR)
80 continue;
81 else
82 break;
83 } while (!exit_backend);
84
85 if (!len)
86 return 0;
87
88 return 1;
89}
90
91int fio_recv_data(int sk, void *p, unsigned int len)
92{
93 do {
94 int ret = recv(sk, p, len, MSG_WAITALL);
95
96 if (ret > 0) {
97 len -= ret;
98 if (!len)
99 break;
100 p += ret;
101 continue;
102 } else if (!ret)
103 break;
104 else if (errno == EAGAIN || errno == EINTR)
105 continue;
106 else
107 break;
108 } while (!exit_backend);
109
110 if (!len)
111 return 0;
112
113 return -1;
114}
115
116static int verify_convert_cmd(struct fio_net_cmd *cmd)
117{
118 uint16_t crc;
119
120 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
121 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
122
123 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
124 if (crc != cmd->cmd_crc16) {
125 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
126 cmd->cmd_crc16, crc);
127 return 1;
128 }
129
130 cmd->version = le16_to_cpu(cmd->version);
131 cmd->opcode = le16_to_cpu(cmd->opcode);
132 cmd->flags = le32_to_cpu(cmd->flags);
133 cmd->tag = le64_to_cpu(cmd->tag);
134 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
135
136 switch (cmd->version) {
137 case FIO_SERVER_VER:
138 break;
139 default:
140 log_err("fio: bad server cmd version %d\n", cmd->version);
141 return 1;
142 }
143
144 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
145 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
146 return 1;
147 }
148
149 return 0;
150}
151
152/*
153 * Read (and defragment, if necessary) incoming commands
154 */
155struct fio_net_cmd *fio_net_recv_cmd(int sk)
156{
157 struct fio_net_cmd cmd, *cmdret = NULL;
158 size_t cmd_size = 0, pdu_offset = 0;
159 uint16_t crc;
160 int ret, first = 1;
161 void *pdu = NULL;
162
163 do {
164 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
165 if (ret)
166 break;
167
168 /* We have a command, verify it and swap if need be */
169 ret = verify_convert_cmd(&cmd);
170 if (ret)
171 break;
172
173 if (first) {
174 /* if this is text, add room for \0 at the end */
175 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
176 assert(!cmdret);
177 } else
178 cmd_size += cmd.pdu_len;
179
180 cmdret = realloc(cmdret, cmd_size);
181
182 if (first)
183 memcpy(cmdret, &cmd, sizeof(cmd));
184 else
185 assert(cmdret->opcode == cmd.opcode);
186
187 if (!cmd.pdu_len)
188 break;
189
190 /* There's payload, get it */
191 pdu = (void *) cmdret->payload + pdu_offset;
192 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
193 if (ret)
194 break;
195
196 /* Verify payload crc */
197 crc = crc16(pdu, cmd.pdu_len);
198 if (crc != cmd.pdu_crc16) {
199 log_err("fio: server bad crc on payload ");
200 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
201 ret = 1;
202 break;
203 }
204
205 pdu_offset += cmd.pdu_len;
206 if (!first)
207 cmdret->pdu_len += cmd.pdu_len;
208 first = 0;
209 } while (cmd.flags & FIO_NET_CMD_F_MORE);
210
211 if (ret) {
212 free(cmdret);
213 cmdret = NULL;
214 } else if (cmdret) {
215 /* zero-terminate text input */
216 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
217 cmdret->opcode == FIO_NET_CMD_JOB)) {
218 char *buf = (char *) cmdret->payload;
219
220 buf[cmdret->pdu_len ] = '\0';
221 }
222 /* frag flag is internal */
223 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
224 }
225
226 return cmdret;
227}
228
229void fio_net_cmd_crc(struct fio_net_cmd *cmd)
230{
231 uint32_t pdu_len;
232
233 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
234
235 pdu_len = le32_to_cpu(cmd->pdu_len);
236 if (pdu_len)
237 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
238}
239
240int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
241 uint64_t tag)
242{
243 struct fio_net_cmd *cmd = NULL;
244 size_t this_len, cur_len = 0;
245 int ret;
246
247 do {
248 this_len = size;
249 if (this_len > FIO_SERVER_MAX_PDU)
250 this_len = FIO_SERVER_MAX_PDU;
251
252 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
253 if (cmd)
254 free(cmd);
255
256 cur_len = sizeof(*cmd) + this_len;
257 cmd = malloc(cur_len);
258 }
259
260 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
261
262 if (this_len < size)
263 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
264
265 fio_net_cmd_crc(cmd);
266
267 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
268 size -= this_len;
269 buf += this_len;
270 } while (!ret && size);
271
272 if (cmd)
273 free(cmd);
274
275 return ret;
276}
277
278static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
279{
280 struct fio_net_cmd cmd;
281
282 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
283 fio_net_cmd_crc(&cmd);
284
285 return fio_send_data(sk, &cmd, sizeof(cmd));
286}
287
288/*
289 * If 'list' is non-NULL, then allocate and store the sent command for
290 * later verification.
291 */
292int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
293 struct flist_head *list)
294{
295 struct fio_net_int_cmd *cmd;
296 int ret;
297
298 if (!list)
299 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
300
301 cmd = malloc(sizeof(*cmd));
302
303 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
304 fio_net_cmd_crc(&cmd->cmd);
305
306 INIT_FLIST_HEAD(&cmd->list);
307 gettimeofday(&cmd->tv, NULL);
308 cmd->saved_tag = tag;
309
310 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
311 if (ret) {
312 free(cmd);
313 return ret;
314 }
315
316 flist_add_tail(&cmd->list, list);
317 return 0;
318}
319
320static int fio_server_send_quit_cmd(void)
321{
322 dprint(FD_NET, "server: sending quit\n");
323 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
324}
325
326static int handle_job_cmd(struct fio_net_cmd *cmd)
327{
328 char *buf = (char *) cmd->payload;
329 int ret;
330
331 if (parse_jobs_ini(buf, 1, 0)) {
332 fio_server_send_quit_cmd();
333 return -1;
334 }
335
336 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
337
338 ret = exec_run();
339 fio_server_send_quit_cmd();
340 reset_fio_state();
341 return ret;
342}
343
344static int handle_jobline_cmd(struct fio_net_cmd *cmd)
345{
346 void *pdu = cmd->payload;
347 struct cmd_single_line_pdu *cslp;
348 struct cmd_line_pdu *clp;
349 unsigned long offset;
350 char **argv;
351 int ret, i;
352
353 clp = pdu;
354 clp->lines = le16_to_cpu(clp->lines);
355 argv = malloc(clp->lines * sizeof(char *));
356 offset = sizeof(*clp);
357
358 dprint(FD_NET, "server: %d command line args\n", clp->lines);
359
360 for (i = 0; i < clp->lines; i++) {
361 cslp = pdu + offset;
362 argv[i] = (char *) cslp->text;
363
364 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
365 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
366 }
367
368 if (parse_cmd_line(clp->lines, argv)) {
369 fio_server_send_quit_cmd();
370 free(argv);
371 return -1;
372 }
373
374 free(argv);
375
376 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
377
378 ret = exec_run();
379 fio_server_send_quit_cmd();
380 reset_fio_state();
381 return ret;
382}
383
384static int handle_probe_cmd(struct fio_net_cmd *cmd)
385{
386 struct cmd_probe_pdu probe;
387
388 dprint(FD_NET, "server: sending probe reply\n");
389
390 memset(&probe, 0, sizeof(probe));
391 gethostname((char *) probe.hostname, sizeof(probe.hostname));
392#ifdef FIO_BIG_ENDIAN
393 probe.bigendian = 1;
394#endif
395 probe.fio_major = FIO_MAJOR;
396 probe.fio_minor = FIO_MINOR;
397 probe.fio_patch = FIO_PATCH;
398
399 probe.os = FIO_OS;
400 probe.arch = FIO_ARCH;
401
402 probe.bpp = sizeof(void *);
403
404 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
405}
406
407static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
408{
409 struct jobs_eta *je;
410 size_t size;
411 int i;
412
413 if (!thread_number)
414 return 0;
415
416 size = sizeof(*je) + thread_number * sizeof(char) + 1;
417 je = malloc(size);
418 memset(je, 0, size);
419
420 if (!calc_thread_status(je, 1)) {
421 free(je);
422 return 0;
423 }
424
425 dprint(FD_NET, "server sending status\n");
426
427 je->nr_running = cpu_to_le32(je->nr_running);
428 je->nr_ramp = cpu_to_le32(je->nr_ramp);
429 je->nr_pending = cpu_to_le32(je->nr_pending);
430 je->files_open = cpu_to_le32(je->files_open);
431 je->m_rate = cpu_to_le32(je->m_rate);
432 je->t_rate = cpu_to_le32(je->t_rate);
433 je->m_iops = cpu_to_le32(je->m_iops);
434 je->t_iops = cpu_to_le32(je->t_iops);
435
436 for (i = 0; i < 2; i++) {
437 je->rate[i] = cpu_to_le32(je->rate[i]);
438 je->iops[i] = cpu_to_le32(je->iops[i]);
439 }
440
441 je->elapsed_sec = cpu_to_le32(je->nr_running);
442 je->eta_sec = cpu_to_le64(je->eta_sec);
443
444 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
445 free(je);
446 return 0;
447}
448
449static int handle_command(struct fio_net_cmd *cmd)
450{
451 int ret;
452
453 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
454 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
455
456 switch (cmd->opcode) {
457 case FIO_NET_CMD_QUIT:
458 fio_terminate_threads(TERMINATE_ALL);
459 return -1;
460 case FIO_NET_CMD_EXIT:
461 exit_backend = 1;
462 return -1;
463 case FIO_NET_CMD_JOB:
464 ret = handle_job_cmd(cmd);
465 break;
466 case FIO_NET_CMD_JOBLINE:
467 ret = handle_jobline_cmd(cmd);
468 break;
469 case FIO_NET_CMD_PROBE:
470 ret = handle_probe_cmd(cmd);
471 break;
472 case FIO_NET_CMD_SEND_ETA:
473 ret = handle_send_eta_cmd(cmd);
474 break;
475 default:
476 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
477 ret = 1;
478 }
479
480 return ret;
481}
482
483static int handle_connection(int sk, int block)
484{
485 struct fio_net_cmd *cmd = NULL;
486 int ret = 0;
487
488 /* read forever */
489 while (!exit_backend) {
490 struct pollfd pfd = {
491 .fd = sk,
492 .events = POLLIN,
493 };
494
495 ret = 0;
496 do {
497 ret = poll(&pfd, 1, 100);
498 if (ret < 0) {
499 if (errno == EINTR)
500 break;
501 log_err("fio: poll: %s\n", strerror(errno));
502 break;
503 } else if (!ret) {
504 if (!block)
505 return 0;
506 continue;
507 }
508
509 if (pfd.revents & POLLIN)
510 break;
511 if (pfd.revents & (POLLERR|POLLHUP)) {
512 ret = 1;
513 break;
514 }
515 } while (!exit_backend);
516
517 if (ret < 0)
518 break;
519
520 cmd = fio_net_recv_cmd(sk);
521 if (!cmd) {
522 ret = -1;
523 break;
524 }
525
526 ret = handle_command(cmd);
527 if (ret)
528 break;
529
530 free(cmd);
531 cmd = NULL;
532 }
533
534 if (cmd)
535 free(cmd);
536
537 return ret;
538}
539
540void fio_server_idle_loop(void)
541{
542 if (server_fd != -1)
543 handle_connection(server_fd, 0);
544}
545
546static int accept_loop(int listen_sk)
547{
548 struct sockaddr_in addr;
549 fio_socklen_t len = sizeof(addr);
550 struct pollfd pfd;
551 int ret, sk, flags, exitval = 0;
552
553 dprint(FD_NET, "server enter accept loop\n");
554
555 flags = fcntl(listen_sk, F_GETFL);
556 flags |= O_NONBLOCK;
557 fcntl(listen_sk, F_SETFL, flags);
558again:
559 pfd.fd = listen_sk;
560 pfd.events = POLLIN;
561 do {
562 ret = poll(&pfd, 1, 100);
563 if (ret < 0) {
564 if (errno == EINTR)
565 break;
566 log_err("fio: poll: %s\n", strerror(errno));
567 goto out;
568 } else if (!ret)
569 continue;
570
571 if (pfd.revents & POLLIN)
572 break;
573 } while (!exit_backend);
574
575 if (exit_backend)
576 goto out;
577
578 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
579 if (sk < 0) {
580 log_err("fio: accept: %s\n", strerror(errno));
581 return -1;
582 }
583
584 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
585
586 server_fd = sk;
587
588 exitval = handle_connection(sk, 1);
589
590 server_fd = -1;
591 close(sk);
592
593 if (!exit_backend)
594 goto again;
595
596out:
597 return exitval;
598}
599
600int fio_server_text_output(const char *buf, size_t len)
601{
602 if (server_fd != -1)
603 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
604
605 return log_local_buf(buf, len);
606}
607
608static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
609{
610 dst->max_val = cpu_to_le64(src->max_val);
611 dst->min_val = cpu_to_le64(src->min_val);
612 dst->samples = cpu_to_le64(src->samples);
613
614 /*
615 * Encode to IEEE 754 for network transfer
616 */
617 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
618 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
619}
620
621static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
622{
623 int i;
624
625 for (i = 0; i < 2; i++) {
626 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
627 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
628 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
629 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
630 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
631 dst->agg[i] = cpu_to_le64(src->agg[i]);
632 }
633
634 dst->kb_base = cpu_to_le32(src->kb_base);
635 dst->groupid = cpu_to_le32(src->groupid);
636}
637
638/*
639 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
640 * into a single payload.
641 */
642void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
643{
644 struct cmd_ts_pdu p;
645 int i, j;
646
647 dprint(FD_NET, "server sending end stats\n");
648
649 memset(&p, 0, sizeof(p));
650
651 strcpy(p.ts.name, ts->name);
652 strcpy(p.ts.verror, ts->verror);
653 strcpy(p.ts.description, ts->description);
654
655 p.ts.error = cpu_to_le32(ts->error);
656 p.ts.groupid = cpu_to_le32(ts->groupid);
657 p.ts.pid = cpu_to_le32(ts->pid);
658 p.ts.members = cpu_to_le32(ts->members);
659
660 for (i = 0; i < 2; i++) {
661 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
662 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
663 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
664 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
665 }
666
667 p.ts.usr_time = cpu_to_le64(ts->usr_time);
668 p.ts.sys_time = cpu_to_le64(ts->sys_time);
669 p.ts.ctx = cpu_to_le64(ts->ctx);
670 p.ts.minf = cpu_to_le64(ts->minf);
671 p.ts.majf = cpu_to_le64(ts->majf);
672 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
673
674 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
675 fio_fp64_t *src = &ts->percentile_list[i];
676 fio_fp64_t *dst = &p.ts.percentile_list[i];
677
678 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
679 }
680
681 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
682 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
683 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
684 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
685 }
686
687 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
688 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
689 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
690 }
691
692 for (i = 0; i < 2; i++)
693 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
694 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
695
696 for (i = 0; i < 3; i++) {
697 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
698 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
699 }
700
701 p.ts.total_submit = cpu_to_le64(ts->total_submit);
702 p.ts.total_complete = cpu_to_le64(ts->total_complete);
703
704 for (i = 0; i < 2; i++) {
705 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
706 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
707 }
708
709 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
710 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
711 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
712 p.ts.first_error = cpu_to_le32(ts->first_error);
713 p.ts.kb_base = cpu_to_le32(ts->kb_base);
714
715 convert_gs(&p.rs, rs);
716
717 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
718}
719
720void fio_server_send_gs(struct group_run_stats *rs)
721{
722 struct group_run_stats gs;
723
724 dprint(FD_NET, "server sending group run stats\n");
725
726 convert_gs(&gs, rs);
727 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
728}
729
730static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
731{
732 int i;
733
734 for (i = 0; i < 2; i++) {
735 dst->ios[i] = cpu_to_le32(src->ios[i]);
736 dst->merges[i] = cpu_to_le32(src->merges[i]);
737 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
738 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
739 }
740
741 dst->io_ticks = cpu_to_le32(src->io_ticks);
742 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
743 dst->slavecount = cpu_to_le32(src->slavecount);
744 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
745}
746
747static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
748{
749 int i;
750
751 strcpy((char *) dst->name, (char *) src->name);
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->msec = cpu_to_le64(src->msec);
763}
764
765void fio_server_send_du(void)
766{
767 struct disk_util *du;
768 struct flist_head *entry;
769 struct cmd_du_pdu pdu;
770
771 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
772
773 memset(&pdu, 0, sizeof(pdu));
774
775 flist_for_each(entry, &disk_list) {
776 du = flist_entry(entry, struct disk_util, list);
777
778 convert_dus(&pdu.dus, &du->dus);
779 convert_agg(&pdu.agg, &du->agg);
780
781 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
782 }
783}
784
785int fio_server_log(const char *format, ...)
786{
787 char buffer[1024];
788 va_list args;
789 size_t len;
790
791 dprint(FD_NET, "server log\n");
792
793 va_start(args, format);
794 len = vsnprintf(buffer, sizeof(buffer), format, args);
795 va_end(args);
796
797 return fio_server_text_output(buffer, len);
798}
799
800static int fio_init_server_ip(void)
801{
802 int sk, opt;
803
804 sk = socket(AF_INET, SOCK_STREAM, 0);
805 if (sk < 0) {
806 log_err("fio: socket: %s\n", strerror(errno));
807 return -1;
808 }
809
810 opt = 1;
811 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
812 log_err("fio: setsockopt: %s\n", strerror(errno));
813 close(sk);
814 return -1;
815 }
816#ifdef SO_REUSEPORT
817 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
818 log_err("fio: setsockopt: %s\n", strerror(errno));
819 close(sk);
820 return -1;
821 }
822#endif
823
824 saddr_in.sin_family = AF_INET;
825
826 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
827 log_err("fio: bind: %s\n", strerror(errno));
828 close(sk);
829 return -1;
830 }
831
832 return sk;
833}
834
835static int fio_init_server_sock(void)
836{
837 struct sockaddr_un addr;
838 fio_socklen_t len;
839 mode_t mode;
840 int sk;
841
842 sk = socket(AF_UNIX, SOCK_STREAM, 0);
843 if (sk < 0) {
844 log_err("fio: socket: %s\n", strerror(errno));
845 return -1;
846 }
847
848 mode = umask(000);
849
850 memset(&addr, 0, sizeof(addr));
851 addr.sun_family = AF_UNIX;
852 strcpy(addr.sun_path, bind_sock);
853 unlink(bind_sock);
854
855 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
856
857 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
858 log_err("fio: bind: %s\n", strerror(errno));
859 close(sk);
860 return -1;
861 }
862
863 umask(mode);
864 return sk;
865}
866
867static int fio_init_server_connection(void)
868{
869 char bind_str[128];
870 int sk;
871
872 dprint(FD_NET, "starting server\n");
873
874 if (!bind_sock)
875 sk = fio_init_server_ip();
876 else
877 sk = fio_init_server_sock();
878
879 if (sk < 0)
880 return sk;
881
882 if (!bind_sock)
883 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
884 else
885 strcpy(bind_str, bind_sock);
886
887 log_info("fio: server listening on %s\n", bind_str);
888
889 if (listen(sk, 0) < 0) {
890 log_err("fio: listen: %s\n", strerror(errno));
891 return -1;
892 }
893
894 return sk;
895}
896
897int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
898 int *port, struct in_addr *inp)
899{
900 *ptr = NULL;
901 *is_sock = 0;
902 *port = fio_net_port;
903
904 if (!strncmp(str, "sock:", 5)) {
905 *ptr = strdup(str + 5);
906 *is_sock = 1;
907 } else {
908 const char *host = str;
909 char *portp;
910 int lport = 0;
911
912 /*
913 * Is it ip:<ip or host>:port
914 */
915 if (!strncmp(host, "ip:", 3))
916 host += 3;
917 else if (host[0] == ':') {
918 /* String is :port */
919 host++;
920 lport = atoi(host);
921 if (!lport || lport > 65535) {
922 log_err("fio: bad server port %u\n", port);
923 return 1;
924 }
925 /* no hostname given, we are done */
926 *port = lport;
927 return 0;
928 }
929
930 /*
931 * If no port seen yet, check if there's a last ':' at the end
932 */
933 if (!lport) {
934 portp = strchr(host, ':');
935 if (portp) {
936 *portp = '\0';
937 portp++;
938 lport = atoi(portp);
939 if (!lport || lport > 65535) {
940 log_err("fio: bad server port %u\n", port);
941 return 1;
942 }
943 }
944 }
945
946 if (lport)
947 *port = lport;
948
949 *ptr = strdup(host);
950
951 if (inet_aton(host, inp) != 1) {
952 struct hostent *hent;
953
954 hent = gethostbyname(host);
955 if (!hent) {
956 free(*ptr);
957 *ptr = NULL;
958 return 1;
959 }
960
961 memcpy(inp, hent->h_addr, 4);
962 }
963 }
964
965 if (*port == 0)
966 *port = fio_net_port;
967
968 return 0;
969}
970
971/*
972 * Server arg should be one of:
973 *
974 * sock:/path/to/socket
975 * ip:1.2.3.4
976 * 1.2.3.4
977 *
978 * Where sock uses unix domain sockets, and ip binds the server to
979 * a specific interface. If no arguments are given to the server, it
980 * uses IP and binds to 0.0.0.0.
981 *
982 */
983static int fio_handle_server_arg(void)
984{
985 int port = fio_net_port;
986 int is_sock, ret = 0;
987
988 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
989
990 if (!fio_server_arg)
991 goto out;
992
993 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
994 &port, &saddr_in.sin_addr);
995
996 if (!is_sock && bind_sock) {
997 free(bind_sock);
998 bind_sock = NULL;
999 }
1000
1001out:
1002 fio_net_port = port;
1003 saddr_in.sin_port = htons(port);
1004 return ret;
1005}
1006
1007static int fio_server(void)
1008{
1009 int sk, ret;
1010
1011 dprint(FD_NET, "starting server\n");
1012
1013 if (fio_handle_server_arg())
1014 return -1;
1015
1016 sk = fio_init_server_connection();
1017 if (sk < 0)
1018 return -1;
1019
1020 ret = accept_loop(sk);
1021
1022 close(sk);
1023
1024 if (fio_server_arg) {
1025 free(fio_server_arg);
1026 fio_server_arg = NULL;
1027 }
1028 if (bind_sock)
1029 free(bind_sock);
1030
1031 return ret;
1032}
1033
1034void fio_server_got_signal(int signal)
1035{
1036 if (signal == SIGPIPE)
1037 server_fd = -1;
1038 else {
1039 log_info("\nfio: terminating on signal %d\n", signal);
1040 exit_backend = 1;
1041 }
1042}
1043
1044static int check_existing_pidfile(const char *pidfile)
1045{
1046 struct stat sb;
1047 char buf[16];
1048 pid_t pid;
1049 FILE *f;
1050
1051 if (stat(pidfile, &sb))
1052 return 0;
1053
1054 f = fopen(pidfile, "r");
1055 if (!f)
1056 return 0;
1057
1058 if (fread(buf, sb.st_size, 1, f) <= 0) {
1059 fclose(f);
1060 return 1;
1061 }
1062 fclose(f);
1063
1064 pid = atoi(buf);
1065 if (kill(pid, SIGCONT) < 0)
1066 return errno != ESRCH;
1067
1068 return 1;
1069}
1070
1071static int write_pid(pid_t pid, const char *pidfile)
1072{
1073 FILE *fpid;
1074
1075 fpid = fopen(pidfile, "w");
1076 if (!fpid) {
1077 log_err("fio: failed opening pid file %s\n", pidfile);
1078 return 1;
1079 }
1080
1081 fprintf(fpid, "%u\n", (unsigned int) pid);
1082 fclose(fpid);
1083 return 0;
1084}
1085
1086/*
1087 * If pidfile is specified, background us.
1088 */
1089int fio_start_server(char *pidfile)
1090{
1091 pid_t pid;
1092 int ret;
1093
1094 if (!pidfile)
1095 return fio_server();
1096
1097 if (check_existing_pidfile(pidfile)) {
1098 log_err("fio: pidfile %s exists and server appears alive\n",
1099 pidfile);
1100 return -1;
1101 }
1102
1103 pid = fork();
1104 if (pid < 0) {
1105 log_err("fio: failed server fork: %s", strerror(errno));
1106 free(pidfile);
1107 return -1;
1108 } else if (pid) {
1109 int ret = write_pid(pid, pidfile);
1110
1111 exit(ret);
1112 }
1113
1114 setsid();
1115 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1116 log_syslog = 1;
1117 close(STDIN_FILENO);
1118 close(STDOUT_FILENO);
1119 close(STDERR_FILENO);
1120 f_out = NULL;
1121 f_err = NULL;
1122
1123 ret = fio_server();
1124
1125 closelog();
1126 unlink(pidfile);
1127 free(pidfile);
1128 return ret;
1129}
1130
1131void fio_server_set_arg(const char *arg)
1132{
1133 fio_server_arg = strdup(arg);
1134}
fio - Flexible IO Tester