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Makefile: fixup init.c dependency
[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
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=%lx\n",
467 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
468
469 switch (cmd->opcode) {
470 case FIO_NET_CMD_QUIT:
471 fio_terminate_threads(TERMINATE_ALL);
472 return -1;
473 case FIO_NET_CMD_EXIT:
474 exit_backend = 1;
475 return -1;
476 case FIO_NET_CMD_JOB:
477 ret = handle_job_cmd(cmd);
478 break;
479 case FIO_NET_CMD_JOBLINE:
480 ret = handle_jobline_cmd(cmd);
481 break;
482 case FIO_NET_CMD_PROBE:
483 ret = handle_probe_cmd(cmd);
484 break;
485 case FIO_NET_CMD_SEND_ETA:
486 ret = handle_send_eta_cmd(cmd);
487 break;
488 default:
489 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
490 ret = 1;
491 }
492
493 return ret;
494}
495
496static int handle_connection(int sk, int block)
497{
498 struct fio_net_cmd *cmd = NULL;
499 int ret = 0;
500
501 /* read forever */
502 while (!exit_backend) {
503 struct pollfd pfd = {
504 .fd = sk,
505 .events = POLLIN,
506 };
507
508 ret = 0;
509 do {
510 ret = poll(&pfd, 1, 100);
511 if (ret < 0) {
512 if (errno == EINTR)
513 break;
514 log_err("fio: poll: %s\n", strerror(errno));
515 break;
516 } else if (!ret) {
517 if (!block)
518 return 0;
519 continue;
520 }
521
522 if (pfd.revents & POLLIN)
523 break;
524 if (pfd.revents & (POLLERR|POLLHUP)) {
525 ret = 1;
526 break;
527 }
528 } while (!exit_backend);
529
530 if (ret < 0)
531 break;
532
533 cmd = fio_net_recv_cmd(sk);
534 if (!cmd) {
535 ret = -1;
536 break;
537 }
538
539 ret = handle_command(cmd);
540 if (ret)
541 break;
542
543 free(cmd);
544 cmd = NULL;
545 }
546
547 if (cmd)
548 free(cmd);
549
550 return ret;
551}
552
553void fio_server_idle_loop(void)
554{
555 if (!first_cmd_check)
556 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
557 if (server_fd != -1)
558 handle_connection(server_fd, 0);
559}
560
561static int accept_loop(int listen_sk)
562{
563 struct sockaddr_in addr;
564 socklen_t len = sizeof(addr);
565 struct pollfd pfd;
566 int ret, sk, flags, exitval = 0;
567
568 dprint(FD_NET, "server enter accept loop\n");
569
570 flags = fcntl(listen_sk, F_GETFL);
571 flags |= O_NONBLOCK;
572 fcntl(listen_sk, F_SETFL, flags);
573again:
574 pfd.fd = listen_sk;
575 pfd.events = POLLIN;
576 do {
577 ret = poll(&pfd, 1, 100);
578 if (ret < 0) {
579 if (errno == EINTR)
580 break;
581 log_err("fio: poll: %s\n", strerror(errno));
582 goto out;
583 } else if (!ret)
584 continue;
585
586 if (pfd.revents & POLLIN)
587 break;
588 } while (!exit_backend);
589
590 if (exit_backend)
591 goto out;
592
593 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
594 if (sk < 0) {
595 log_err("fio: accept: %s\n", strerror(errno));
596 return -1;
597 }
598
599 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
600
601 server_fd = sk;
602
603 exitval = handle_connection(sk, 1);
604
605 server_fd = -1;
606 close(sk);
607
608 if (!exit_backend)
609 goto again;
610
611out:
612 return exitval;
613}
614
615int fio_server_text_output(const char *buf, size_t len)
616{
617 if (server_fd != -1)
618 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
619
620 return log_local_buf(buf, len);
621}
622
623static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
624{
625 dst->max_val = cpu_to_le64(src->max_val);
626 dst->min_val = cpu_to_le64(src->min_val);
627 dst->samples = cpu_to_le64(src->samples);
628
629 /*
630 * Encode to IEEE 754 for network transfer
631 */
632 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
633 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
634}
635
636static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
637{
638 int i;
639
640 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
641 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
642 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
643 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
644 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
645 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
646 dst->agg[i] = cpu_to_le64(src->agg[i]);
647 }
648
649 dst->kb_base = cpu_to_le32(src->kb_base);
650 dst->groupid = cpu_to_le32(src->groupid);
651 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
652}
653
654/*
655 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
656 * into a single payload.
657 */
658void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
659{
660 struct cmd_ts_pdu p;
661 int i, j;
662
663 dprint(FD_NET, "server sending end stats\n");
664
665 memset(&p, 0, sizeof(p));
666
667 strcpy(p.ts.name, ts->name);
668 strcpy(p.ts.verror, ts->verror);
669 strcpy(p.ts.description, ts->description);
670
671 p.ts.error = cpu_to_le32(ts->error);
672 p.ts.groupid = cpu_to_le32(ts->groupid);
673 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
674 p.ts.pid = cpu_to_le32(ts->pid);
675 p.ts.members = cpu_to_le32(ts->members);
676 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
677
678 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
679 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
680 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
681 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
682 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
683 }
684
685 p.ts.usr_time = cpu_to_le64(ts->usr_time);
686 p.ts.sys_time = cpu_to_le64(ts->sys_time);
687 p.ts.ctx = cpu_to_le64(ts->ctx);
688 p.ts.minf = cpu_to_le64(ts->minf);
689 p.ts.majf = cpu_to_le64(ts->majf);
690 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
691
692 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
693 fio_fp64_t *src = &ts->percentile_list[i];
694 fio_fp64_t *dst = &p.ts.percentile_list[i];
695
696 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
697 }
698
699 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
700 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
701 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
702 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
703 }
704
705 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
706 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
707 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
708 }
709
710 for (i = 0; i < DDIR_RWDIR_CNT; i++)
711 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
712 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
713
714 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
715 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
716 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
717 }
718
719 p.ts.total_submit = cpu_to_le64(ts->total_submit);
720 p.ts.total_complete = cpu_to_le64(ts->total_complete);
721
722 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
723 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
724 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
725 }
726
727 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
728 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
729 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
730 p.ts.first_error = cpu_to_le32(ts->first_error);
731 p.ts.kb_base = cpu_to_le32(ts->kb_base);
732
733 convert_gs(&p.rs, rs);
734
735 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
736}
737
738void fio_server_send_gs(struct group_run_stats *rs)
739{
740 struct group_run_stats gs;
741
742 dprint(FD_NET, "server sending group run stats\n");
743
744 convert_gs(&gs, rs);
745 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
746}
747
748static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
749{
750 int i;
751
752 for (i = 0; i < 2; i++) {
753 dst->ios[i] = cpu_to_le32(src->ios[i]);
754 dst->merges[i] = cpu_to_le32(src->merges[i]);
755 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
756 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
757 }
758
759 dst->io_ticks = cpu_to_le32(src->io_ticks);
760 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
761 dst->slavecount = cpu_to_le32(src->slavecount);
762 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
763}
764
765static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
766{
767 int i;
768
769 strcpy((char *) dst->name, (char *) src->name);
770
771 for (i = 0; i < 2; i++) {
772 dst->ios[i] = cpu_to_le32(src->ios[i]);
773 dst->merges[i] = cpu_to_le32(src->merges[i]);
774 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
775 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
776 }
777
778 dst->io_ticks = cpu_to_le32(src->io_ticks);
779 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
780 dst->msec = cpu_to_le64(src->msec);
781}
782
783void fio_server_send_du(void)
784{
785 struct disk_util *du;
786 struct flist_head *entry;
787 struct cmd_du_pdu pdu;
788
789 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
790
791 memset(&pdu, 0, sizeof(pdu));
792
793 flist_for_each(entry, &disk_list) {
794 du = flist_entry(entry, struct disk_util, list);
795
796 convert_dus(&pdu.dus, &du->dus);
797 convert_agg(&pdu.agg, &du->agg);
798
799 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
800 }
801}
802
803int fio_server_log(const char *format, ...)
804{
805 char buffer[1024];
806 va_list args;
807 size_t len;
808
809 dprint(FD_NET, "server log\n");
810
811 va_start(args, format);
812 len = vsnprintf(buffer, sizeof(buffer), format, args);
813 va_end(args);
814 len = min(len, sizeof(buffer) - 1);
815
816 return fio_server_text_output(buffer, len);
817}
818
819static int fio_init_server_ip(void)
820{
821 struct sockaddr *addr;
822 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, (void *)&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 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
948/*
949 * Parse a host/ip/port string. Reads from 'str'.
950 *
951 * Outputs:
952 *
953 * For IPv4:
954 * *ptr is the host, *port is the port, inp is the destination.
955 * For IPv6:
956 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
957 * For local domain sockets:
958 * *ptr is the filename, *is_sock is 1.
959 */
960int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
961 int *port, struct in_addr *inp,
962 struct in6_addr *inp6, int *ipv6)
963{
964 const char *host = str;
965 char *portp;
966 int ret, lport = 0;
967
968 *ptr = NULL;
969 *is_sock = 0;
970 *port = fio_net_port;
971 *ipv6 = 0;
972
973 if (!strncmp(str, "sock:", 5)) {
974 *ptr = strdup(str + 5);
975 *is_sock = 1;
976
977 return 0;
978 }
979
980 /*
981 * Is it ip:<ip or host>:port
982 */
983 if (!strncmp(host, "ip:", 3))
984 host += 3;
985 else if (!strncmp(host, "ip4:", 4))
986 host += 4;
987 else if (!strncmp(host, "ip6:", 4)) {
988 host += 4;
989 *ipv6 = 1;
990 } else if (host[0] == ':') {
991 /* String is :port */
992 host++;
993 lport = atoi(host);
994 if (!lport || lport > 65535) {
995 log_err("fio: bad server port %u\n", port);
996 return 1;
997 }
998 /* no hostname given, we are done */
999 *port = lport;
1000 return 0;
1001 }
1002
1003 /*
1004 * If no port seen yet, check if there's a last ':' at the end
1005 */
1006 if (!lport) {
1007 portp = strchr(host, ',');
1008 if (portp) {
1009 *portp = '\0';
1010 portp++;
1011 lport = atoi(portp);
1012 if (!lport || lport > 65535) {
1013 log_err("fio: bad server port %u\n", port);
1014 return 1;
1015 }
1016 }
1017 }
1018
1019 if (lport)
1020 *port = lport;
1021
1022 if (!strlen(host))
1023 return 0;
1024
1025 *ptr = strdup(host);
1026
1027 if (*ipv6)
1028 ret = inet_pton(AF_INET6, host, inp6);
1029 else
1030 ret = inet_pton(AF_INET, host, inp);
1031
1032 if (ret != 1) {
1033 struct hostent *hent;
1034
1035 hent = gethostbyname(host);
1036 if (!hent) {
1037 log_err("fio: failed to resolve <%s>\n", host);
1038 free(*ptr);
1039 *ptr = NULL;
1040 return 1;
1041 }
1042
1043 if (*ipv6) {
1044 if (hent->h_addrtype != AF_INET6) {
1045 log_info("fio: falling back to IPv4\n");
1046 *ipv6 = 0;
1047 } else
1048 memcpy(inp6, hent->h_addr_list[0], 16);
1049 }
1050 if (!*ipv6) {
1051 if (hent->h_addrtype != AF_INET) {
1052 log_err("fio: lookup type mismatch\n");
1053 free(*ptr);
1054 *ptr = NULL;
1055 return 1;
1056 }
1057 memcpy(inp, hent->h_addr_list[0], 4);
1058 }
1059 }
1060
1061 if (*port == 0)
1062 *port = fio_net_port;
1063
1064 return 0;
1065}
1066
1067/*
1068 * Server arg should be one of:
1069 *
1070 * sock:/path/to/socket
1071 * ip:1.2.3.4
1072 * 1.2.3.4
1073 *
1074 * Where sock uses unix domain sockets, and ip binds the server to
1075 * a specific interface. If no arguments are given to the server, it
1076 * uses IP and binds to 0.0.0.0.
1077 *
1078 */
1079static int fio_handle_server_arg(void)
1080{
1081 int port = fio_net_port;
1082 int is_sock, ret = 0;
1083
1084 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1085
1086 if (!fio_server_arg)
1087 goto out;
1088
1089 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1090 &port, &saddr_in.sin_addr,
1091 &saddr_in6.sin6_addr, &use_ipv6);
1092
1093 if (!is_sock && bind_sock) {
1094 free(bind_sock);
1095 bind_sock = NULL;
1096 }
1097
1098out:
1099 fio_net_port = port;
1100 saddr_in.sin_port = htons(port);
1101 saddr_in6.sin6_port = htons(port);
1102 return ret;
1103}
1104
1105static int fio_server(void)
1106{
1107 int sk, ret;
1108
1109 dprint(FD_NET, "starting server\n");
1110
1111 if (fio_handle_server_arg())
1112 return -1;
1113
1114 sk = fio_init_server_connection();
1115 if (sk < 0)
1116 return -1;
1117
1118 ret = accept_loop(sk);
1119
1120 close(sk);
1121
1122 if (fio_server_arg) {
1123 free(fio_server_arg);
1124 fio_server_arg = NULL;
1125 }
1126 if (bind_sock)
1127 free(bind_sock);
1128
1129 return ret;
1130}
1131
1132void fio_server_got_signal(int signal)
1133{
1134 if (signal == SIGPIPE)
1135 server_fd = -1;
1136 else {
1137 log_info("\nfio: terminating on signal %d\n", signal);
1138 exit_backend = 1;
1139 }
1140}
1141
1142static int check_existing_pidfile(const char *pidfile)
1143{
1144 struct stat sb;
1145 char buf[16];
1146 pid_t pid;
1147 FILE *f;
1148
1149 if (stat(pidfile, &sb))
1150 return 0;
1151
1152 f = fopen(pidfile, "r");
1153 if (!f)
1154 return 0;
1155
1156 if (fread(buf, sb.st_size, 1, f) <= 0) {
1157 fclose(f);
1158 return 1;
1159 }
1160 fclose(f);
1161
1162 pid = atoi(buf);
1163 if (kill(pid, SIGCONT) < 0)
1164 return errno != ESRCH;
1165
1166 return 1;
1167}
1168
1169static int write_pid(pid_t pid, const char *pidfile)
1170{
1171 FILE *fpid;
1172
1173 fpid = fopen(pidfile, "w");
1174 if (!fpid) {
1175 log_err("fio: failed opening pid file %s\n", pidfile);
1176 return 1;
1177 }
1178
1179 fprintf(fpid, "%u\n", (unsigned int) pid);
1180 fclose(fpid);
1181 return 0;
1182}
1183
1184/*
1185 * If pidfile is specified, background us.
1186 */
1187int fio_start_server(char *pidfile)
1188{
1189 pid_t pid;
1190 int ret;
1191
1192#if defined(WIN32)
1193 WSADATA wsd;
1194 WSAStartup(MAKEWORD(2,2), &wsd);
1195#endif
1196
1197 if (!pidfile)
1198 return fio_server();
1199
1200 if (check_existing_pidfile(pidfile)) {
1201 log_err("fio: pidfile %s exists and server appears alive\n",
1202 pidfile);
1203 return -1;
1204 }
1205
1206 pid = fork();
1207 if (pid < 0) {
1208 log_err("fio: failed server fork: %s", strerror(errno));
1209 free(pidfile);
1210 return -1;
1211 } else if (pid) {
1212 int ret = write_pid(pid, pidfile);
1213
1214 exit(ret);
1215 }
1216
1217 setsid();
1218 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1219 log_syslog = 1;
1220 close(STDIN_FILENO);
1221 close(STDOUT_FILENO);
1222 close(STDERR_FILENO);
1223 f_out = NULL;
1224 f_err = NULL;
1225
1226 ret = fio_server();
1227
1228 closelog();
1229 unlink(pidfile);
1230 free(pidfile);
1231 return ret;
1232}
1233
1234void fio_server_set_arg(const char *arg)
1235{
1236 fio_server_arg = strdup(arg);
1237}
fio - Flexible IO Tester