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Add new net command for text logging
[fio.git] / server.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <fcntl.h>
8#include <sys/poll.h>
9#include <sys/types.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/stat.h>
13#include <sys/un.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19
20#include "fio.h"
21#include "server.h"
22#include "crc/crc16.h"
23#include "lib/ieee754.h"
24
25#include "fio_version.h"
26
27int fio_net_port = FIO_NET_PORT;
28
29int exit_backend = 0;
30
31static int server_fd = -1;
32static char *fio_server_arg;
33static char *bind_sock;
34static struct sockaddr_in saddr_in;
35static struct sockaddr_in6 saddr_in6;
36static int first_cmd_check;
37static int use_ipv6;
38
39static const char *fio_server_ops[FIO_NET_CMD_NR] = {
40 "",
41 "QUIT",
42 "EXIT",
43 "JOB",
44 "JOBLINE",
45 "TEXT",
46 "TS",
47 "GS",
48 "SEND_ETA",
49 "ETA",
50 "PROBE",
51 "START",
52 "STOP",
53 "DISK_UTIL",
54 "RUN",
55 "ADD_JOB",
56};
57
58const char *fio_server_op(unsigned int op)
59{
60 static char buf[32];
61
62 if (op < FIO_NET_CMD_NR)
63 return fio_server_ops[op];
64
65 sprintf(buf, "UNKNOWN/%d", op);
66 return buf;
67}
68
69int fio_send_data(int sk, const void *p, unsigned int len)
70{
71 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
72
73 do {
74 int ret = send(sk, p, len, 0);
75
76 if (ret > 0) {
77 len -= ret;
78 if (!len)
79 break;
80 p += ret;
81 continue;
82 } else if (!ret)
83 break;
84 else if (errno == EAGAIN || errno == EINTR)
85 continue;
86 else
87 break;
88 } while (!exit_backend);
89
90 if (!len)
91 return 0;
92
93 return 1;
94}
95
96int fio_recv_data(int sk, void *p, unsigned int len)
97{
98 do {
99 int ret = recv(sk, p, len, MSG_WAITALL);
100
101 if (ret > 0) {
102 len -= ret;
103 if (!len)
104 break;
105 p += ret;
106 continue;
107 } else if (!ret)
108 break;
109 else if (errno == EAGAIN || errno == EINTR)
110 continue;
111 else
112 break;
113 } while (!exit_backend);
114
115 if (!len)
116 return 0;
117
118 return -1;
119}
120
121static int verify_convert_cmd(struct fio_net_cmd *cmd)
122{
123 uint16_t crc;
124
125 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
126 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
127
128 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
129 if (crc != cmd->cmd_crc16) {
130 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
131 cmd->cmd_crc16, crc);
132 return 1;
133 }
134
135 cmd->version = le16_to_cpu(cmd->version);
136 cmd->opcode = le16_to_cpu(cmd->opcode);
137 cmd->flags = le32_to_cpu(cmd->flags);
138 cmd->tag = le64_to_cpu(cmd->tag);
139 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
140
141 switch (cmd->version) {
142 case FIO_SERVER_VER:
143 break;
144 default:
145 log_err("fio: bad server cmd version %d\n", cmd->version);
146 return 1;
147 }
148
149 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
150 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
151 return 1;
152 }
153
154 return 0;
155}
156
157/*
158 * Read (and defragment, if necessary) incoming commands
159 */
160struct fio_net_cmd *fio_net_recv_cmd(int sk)
161{
162 struct fio_net_cmd cmd, *cmdret = NULL;
163 size_t cmd_size = 0, pdu_offset = 0;
164 uint16_t crc;
165 int ret, first = 1;
166 void *pdu = NULL;
167
168 do {
169 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
170 if (ret)
171 break;
172
173 /* We have a command, verify it and swap if need be */
174 ret = verify_convert_cmd(&cmd);
175 if (ret)
176 break;
177
178 if (first) {
179 /* if this is text, add room for \0 at the end */
180 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
181 assert(!cmdret);
182 } else
183 cmd_size += cmd.pdu_len;
184
185 cmdret = realloc(cmdret, cmd_size);
186
187 if (first)
188 memcpy(cmdret, &cmd, sizeof(cmd));
189 else if (cmdret->opcode != cmd.opcode) {
190 log_err("fio: fragment opcode mismatch (%d != %d)\n",
191 cmdret->opcode, cmd.opcode);
192 ret = 1;
193 break;
194 }
195
196 if (!cmd.pdu_len)
197 break;
198
199 /* There's payload, get it */
200 pdu = (void *) cmdret->payload + pdu_offset;
201 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
202 if (ret)
203 break;
204
205 /* Verify payload crc */
206 crc = fio_crc16(pdu, cmd.pdu_len);
207 if (crc != cmd.pdu_crc16) {
208 log_err("fio: server bad crc on payload ");
209 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
210 ret = 1;
211 break;
212 }
213
214 pdu_offset += cmd.pdu_len;
215 if (!first)
216 cmdret->pdu_len += cmd.pdu_len;
217 first = 0;
218 } while (cmd.flags & FIO_NET_CMD_F_MORE);
219
220 if (ret) {
221 free(cmdret);
222 cmdret = NULL;
223 } else if (cmdret) {
224 /* zero-terminate text input */
225 if (cmdret->pdu_len) {
226 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
227 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
228 char *buf = (char *) pdu->buf;
229
230 buf[pdu->buf_len ] = '\0';
231 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
232 char *buf = (char *) cmdret->payload;
233
234 buf[cmdret->pdu_len ] = '\0';
235 }
236 }
237
238 /* frag flag is internal */
239 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
240 }
241
242 return cmdret;
243}
244
245void fio_net_cmd_crc(struct fio_net_cmd *cmd)
246{
247 uint32_t pdu_len;
248
249 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
250
251 pdu_len = le32_to_cpu(cmd->pdu_len);
252 if (pdu_len)
253 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
254}
255
256int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
257 uint64_t tag)
258{
259 struct fio_net_cmd *cmd = NULL;
260 size_t this_len, cur_len = 0;
261 int ret;
262
263 do {
264 this_len = size;
265 if (this_len > FIO_SERVER_MAX_PDU)
266 this_len = FIO_SERVER_MAX_PDU;
267
268 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
269 if (cmd)
270 free(cmd);
271
272 cur_len = sizeof(*cmd) + this_len;
273 cmd = malloc(cur_len);
274 }
275
276 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
277
278 if (this_len < size)
279 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
280
281 fio_net_cmd_crc(cmd);
282
283 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
284 size -= this_len;
285 buf += this_len;
286 } while (!ret && size);
287
288 if (cmd)
289 free(cmd);
290
291 return ret;
292}
293
294static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
295{
296 struct fio_net_cmd cmd;
297
298 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
299 fio_net_cmd_crc(&cmd);
300
301 return fio_send_data(sk, &cmd, sizeof(cmd));
302}
303
304/*
305 * If 'list' is non-NULL, then allocate and store the sent command for
306 * later verification.
307 */
308int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
309 struct flist_head *list)
310{
311 struct fio_net_int_cmd *cmd;
312 int ret;
313
314 if (!list)
315 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
316
317 cmd = malloc(sizeof(*cmd));
318
319 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
320 fio_net_cmd_crc(&cmd->cmd);
321
322 INIT_FLIST_HEAD(&cmd->list);
323 gettimeofday(&cmd->tv, NULL);
324 cmd->saved_tag = tag;
325
326 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
327 if (ret) {
328 free(cmd);
329 return ret;
330 }
331
332 flist_add_tail(&cmd->list, list);
333 return 0;
334}
335
336static int fio_server_send_quit_cmd(void)
337{
338 dprint(FD_NET, "server: sending quit\n");
339 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
340}
341
342static int handle_job_cmd(struct fio_net_cmd *cmd)
343{
344 char *buf = (char *) cmd->payload;
345 struct cmd_start_pdu spdu;
346 struct cmd_end_pdu epdu;
347 int ret;
348
349 if (parse_jobs_ini(buf, 1, 0)) {
350 fio_server_send_quit_cmd();
351 return -1;
352 }
353
354 spdu.jobs = cpu_to_le32(thread_number);
355 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
356
357 ret = fio_backend();
358
359 epdu.error = ret;
360 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
361
362 fio_server_send_quit_cmd();
363 reset_fio_state();
364 first_cmd_check = 0;
365 return ret;
366}
367
368static int handle_jobline_cmd(struct fio_net_cmd *cmd)
369{
370 void *pdu = cmd->payload;
371 struct cmd_single_line_pdu *cslp;
372 struct cmd_line_pdu *clp;
373 unsigned long offset;
374 char **argv;
375 int ret, i;
376
377 clp = pdu;
378 clp->lines = le16_to_cpu(clp->lines);
379 argv = malloc(clp->lines * sizeof(char *));
380 offset = sizeof(*clp);
381
382 dprint(FD_NET, "server: %d command line args\n", clp->lines);
383
384 for (i = 0; i < clp->lines; i++) {
385 cslp = pdu + offset;
386 argv[i] = (char *) cslp->text;
387
388 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
389 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
390 }
391
392 if (parse_cmd_line(clp->lines, argv)) {
393 fio_server_send_quit_cmd();
394 free(argv);
395 return -1;
396 }
397
398 free(argv);
399
400 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
401
402 ret = fio_backend();
403 fio_server_send_quit_cmd();
404 reset_fio_state();
405 first_cmd_check = 0;
406 return ret;
407}
408
409static int handle_probe_cmd(struct fio_net_cmd *cmd)
410{
411 struct cmd_probe_pdu probe;
412
413 dprint(FD_NET, "server: sending probe reply\n");
414
415 memset(&probe, 0, sizeof(probe));
416 gethostname((char *) probe.hostname, sizeof(probe.hostname));
417#ifdef FIO_BIG_ENDIAN
418 probe.bigendian = 1;
419#endif
420 probe.fio_major = FIO_MAJOR;
421 probe.fio_minor = FIO_MINOR;
422 probe.fio_patch = FIO_PATCH;
423
424 probe.os = FIO_OS;
425 probe.arch = FIO_ARCH;
426
427 probe.bpp = sizeof(void *);
428
429 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
430}
431
432static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
433{
434 struct jobs_eta *je;
435 size_t size;
436 int i;
437
438 if (!thread_number)
439 return 0;
440
441 size = sizeof(*je) + thread_number * sizeof(char) + 1;
442 je = malloc(size);
443 memset(je, 0, size);
444
445 if (!calc_thread_status(je, 1)) {
446 free(je);
447 return 0;
448 }
449
450 dprint(FD_NET, "server sending status\n");
451
452 je->nr_running = cpu_to_le32(je->nr_running);
453 je->nr_ramp = cpu_to_le32(je->nr_ramp);
454 je->nr_pending = cpu_to_le32(je->nr_pending);
455 je->files_open = cpu_to_le32(je->files_open);
456
457 for (i = 0; i < 2; i++) {
458 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
459 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
460 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
461 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
462 je->rate[i] = cpu_to_le32(je->rate[i]);
463 je->iops[i] = cpu_to_le32(je->iops[i]);
464 }
465
466 je->elapsed_sec = cpu_to_le32(je->nr_running);
467 je->eta_sec = cpu_to_le64(je->eta_sec);
468
469 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
470 free(je);
471 return 0;
472}
473
474static int handle_command(struct fio_net_cmd *cmd)
475{
476 int ret;
477
478 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
479 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
480
481 switch (cmd->opcode) {
482 case FIO_NET_CMD_QUIT:
483 fio_terminate_threads(TERMINATE_ALL);
484 return -1;
485 case FIO_NET_CMD_EXIT:
486 exit_backend = 1;
487 return -1;
488 case FIO_NET_CMD_JOB:
489 ret = handle_job_cmd(cmd);
490 break;
491 case FIO_NET_CMD_JOBLINE:
492 ret = handle_jobline_cmd(cmd);
493 break;
494 case FIO_NET_CMD_PROBE:
495 ret = handle_probe_cmd(cmd);
496 break;
497 case FIO_NET_CMD_SEND_ETA:
498 ret = handle_send_eta_cmd(cmd);
499 break;
500 default:
501 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
502 ret = 1;
503 }
504
505 return ret;
506}
507
508static int handle_connection(int sk, int block)
509{
510 struct fio_net_cmd *cmd = NULL;
511 int ret = 0;
512
513 /* read forever */
514 while (!exit_backend) {
515 struct pollfd pfd = {
516 .fd = sk,
517 .events = POLLIN,
518 };
519
520 ret = 0;
521 do {
522 ret = poll(&pfd, 1, 100);
523 if (ret < 0) {
524 if (errno == EINTR)
525 break;
526 log_err("fio: poll: %s\n", strerror(errno));
527 break;
528 } else if (!ret) {
529 if (!block)
530 return 0;
531 continue;
532 }
533
534 if (pfd.revents & POLLIN)
535 break;
536 if (pfd.revents & (POLLERR|POLLHUP)) {
537 ret = 1;
538 break;
539 }
540 } while (!exit_backend);
541
542 if (ret < 0)
543 break;
544
545 cmd = fio_net_recv_cmd(sk);
546 if (!cmd) {
547 ret = -1;
548 break;
549 }
550
551 ret = handle_command(cmd);
552 if (ret)
553 break;
554
555 free(cmd);
556 cmd = NULL;
557 }
558
559 if (cmd)
560 free(cmd);
561
562 return ret;
563}
564
565void fio_server_idle_loop(void)
566{
567 if (!first_cmd_check) {
568 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
569 first_cmd_check = 1;
570 }
571 if (server_fd != -1)
572 handle_connection(server_fd, 0);
573}
574
575static int accept_loop(int listen_sk)
576{
577 struct sockaddr_in addr;
578 fio_socklen_t len = sizeof(addr);
579 struct pollfd pfd;
580 int ret, sk, flags, exitval = 0;
581
582 dprint(FD_NET, "server enter accept loop\n");
583
584 flags = fcntl(listen_sk, F_GETFL);
585 flags |= O_NONBLOCK;
586 fcntl(listen_sk, F_SETFL, flags);
587again:
588 pfd.fd = listen_sk;
589 pfd.events = POLLIN;
590 do {
591 ret = poll(&pfd, 1, 100);
592 if (ret < 0) {
593 if (errno == EINTR)
594 break;
595 log_err("fio: poll: %s\n", strerror(errno));
596 goto out;
597 } else if (!ret)
598 continue;
599
600 if (pfd.revents & POLLIN)
601 break;
602 } while (!exit_backend);
603
604 if (exit_backend)
605 goto out;
606
607 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
608 if (sk < 0) {
609 log_err("fio: accept: %s\n", strerror(errno));
610 return -1;
611 }
612
613 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
614
615 server_fd = sk;
616
617 exitval = handle_connection(sk, 1);
618
619 server_fd = -1;
620 close(sk);
621
622 if (!exit_backend)
623 goto again;
624
625out:
626 return exitval;
627}
628
629int fio_server_text_output(int level, const char *buf, size_t len)
630{
631 struct cmd_text_pdu *pdu;
632 unsigned int tlen;
633 struct timeval tv;
634
635 if (server_fd == -1)
636 return log_local_buf(buf, len);
637
638 tlen = sizeof(*pdu) + len;
639 pdu = malloc(tlen);
640
641 pdu->level = __cpu_to_le32(level);
642 pdu->buf_len = __cpu_to_le32(len);
643
644 gettimeofday(&tv, NULL);
645 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
646 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
647
648 memcpy(pdu->buf, buf, len);
649
650 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
651 free(pdu);
652 return len;
653}
654
655static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
656{
657 dst->max_val = cpu_to_le64(src->max_val);
658 dst->min_val = cpu_to_le64(src->min_val);
659 dst->samples = cpu_to_le64(src->samples);
660
661 /*
662 * Encode to IEEE 754 for network transfer
663 */
664 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
665 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
666}
667
668static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
669{
670 int i;
671
672 for (i = 0; i < 2; i++) {
673 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
674 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
675 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
676 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
677 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
678 dst->agg[i] = cpu_to_le64(src->agg[i]);
679 }
680
681 dst->kb_base = cpu_to_le32(src->kb_base);
682 dst->groupid = cpu_to_le32(src->groupid);
683}
684
685/*
686 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
687 * into a single payload.
688 */
689void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
690{
691 struct cmd_ts_pdu p;
692 int i, j;
693
694 dprint(FD_NET, "server sending end stats\n");
695
696 memset(&p, 0, sizeof(p));
697
698 strcpy(p.ts.name, ts->name);
699 strcpy(p.ts.verror, ts->verror);
700 strcpy(p.ts.description, ts->description);
701
702 p.ts.error = cpu_to_le32(ts->error);
703 p.ts.groupid = cpu_to_le32(ts->groupid);
704 p.ts.pid = cpu_to_le32(ts->pid);
705 p.ts.members = cpu_to_le32(ts->members);
706
707 for (i = 0; i < 2; i++) {
708 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
709 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
710 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
711 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
712 }
713
714 p.ts.usr_time = cpu_to_le64(ts->usr_time);
715 p.ts.sys_time = cpu_to_le64(ts->sys_time);
716 p.ts.ctx = cpu_to_le64(ts->ctx);
717 p.ts.minf = cpu_to_le64(ts->minf);
718 p.ts.majf = cpu_to_le64(ts->majf);
719 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
720
721 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
722 fio_fp64_t *src = &ts->percentile_list[i];
723 fio_fp64_t *dst = &p.ts.percentile_list[i];
724
725 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
726 }
727
728 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
729 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
730 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
731 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
732 }
733
734 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
735 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
736 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
737 }
738
739 for (i = 0; i < 2; i++)
740 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
741 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
742
743 for (i = 0; i < 3; i++) {
744 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
745 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
746 }
747
748 p.ts.total_submit = cpu_to_le64(ts->total_submit);
749 p.ts.total_complete = cpu_to_le64(ts->total_complete);
750
751 for (i = 0; i < 2; i++) {
752 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
753 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
754 }
755
756 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
757 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
758 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
759 p.ts.first_error = cpu_to_le32(ts->first_error);
760 p.ts.kb_base = cpu_to_le32(ts->kb_base);
761
762 convert_gs(&p.rs, rs);
763
764 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
765}
766
767void fio_server_send_gs(struct group_run_stats *rs)
768{
769 struct group_run_stats gs;
770
771 dprint(FD_NET, "server sending group run stats\n");
772
773 convert_gs(&gs, rs);
774 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
775}
776
777static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
778{
779 int i;
780
781 for (i = 0; i < 2; i++) {
782 dst->ios[i] = cpu_to_le32(src->ios[i]);
783 dst->merges[i] = cpu_to_le32(src->merges[i]);
784 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
785 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
786 }
787
788 dst->io_ticks = cpu_to_le32(src->io_ticks);
789 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
790 dst->slavecount = cpu_to_le32(src->slavecount);
791 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
792}
793
794static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
795{
796 int i;
797
798 strcpy((char *) dst->name, (char *) src->name);
799
800 for (i = 0; i < 2; i++) {
801 dst->ios[i] = cpu_to_le32(src->ios[i]);
802 dst->merges[i] = cpu_to_le32(src->merges[i]);
803 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
804 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
805 }
806
807 dst->io_ticks = cpu_to_le32(src->io_ticks);
808 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
809 dst->msec = cpu_to_le64(src->msec);
810}
811
812void fio_server_send_du(void)
813{
814 struct disk_util *du;
815 struct flist_head *entry;
816 struct cmd_du_pdu pdu;
817
818 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
819
820 memset(&pdu, 0, sizeof(pdu));
821
822 flist_for_each(entry, &disk_list) {
823 du = flist_entry(entry, struct disk_util, list);
824
825 convert_dus(&pdu.dus, &du->dus);
826 convert_agg(&pdu.agg, &du->agg);
827
828 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
829 }
830}
831
832void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
833{
834 struct cmd_add_job_pdu pdu;
835 int i;
836
837 strcpy((char *) pdu.jobname, o->name);
838 strcpy((char *) pdu.ioengine, ioengine);
839
840 pdu.iodepth = cpu_to_le32(o->iodepth);
841 pdu.rw = cpu_to_le32(o->td_ddir);
842
843 for (i = 0; i < 2; i++) {
844 pdu.min_bs[i] = cpu_to_le32(o->min_bs[i]);
845 pdu.max_bs[i] = cpu_to_le32(o->max_bs[i]);
846 }
847
848 pdu.numjobs = cpu_to_le32(o->numjobs);
849 pdu.group_reporting = cpu_to_le32(o->group_reporting);
850
851 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
852}
853
854static int fio_init_server_ip(void)
855{
856 struct sockaddr *addr;
857 fio_socklen_t socklen;
858 int sk, opt;
859
860 if (use_ipv6)
861 sk = socket(AF_INET6, SOCK_STREAM, 0);
862 else
863 sk = socket(AF_INET, SOCK_STREAM, 0);
864
865 if (sk < 0) {
866 log_err("fio: socket: %s\n", strerror(errno));
867 return -1;
868 }
869
870 opt = 1;
871 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
872 log_err("fio: setsockopt: %s\n", strerror(errno));
873 close(sk);
874 return -1;
875 }
876#ifdef SO_REUSEPORT
877 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
878 log_err("fio: setsockopt: %s\n", strerror(errno));
879 close(sk);
880 return -1;
881 }
882#endif
883
884 if (use_ipv6) {
885 addr = (struct sockaddr *) &saddr_in6;
886 socklen = sizeof(saddr_in6);
887 saddr_in6.sin6_family = AF_INET6;
888 } else {
889 addr = (struct sockaddr *) &saddr_in;
890 socklen = sizeof(saddr_in);
891 saddr_in.sin_family = AF_INET;
892 }
893
894 if (bind(sk, addr, socklen) < 0) {
895 log_err("fio: bind: %s\n", strerror(errno));
896 close(sk);
897 return -1;
898 }
899
900 return sk;
901}
902
903static int fio_init_server_sock(void)
904{
905 struct sockaddr_un addr;
906 fio_socklen_t len;
907 mode_t mode;
908 int sk;
909
910 sk = socket(AF_UNIX, SOCK_STREAM, 0);
911 if (sk < 0) {
912 log_err("fio: socket: %s\n", strerror(errno));
913 return -1;
914 }
915
916 mode = umask(000);
917
918 memset(&addr, 0, sizeof(addr));
919 addr.sun_family = AF_UNIX;
920 strcpy(addr.sun_path, bind_sock);
921 unlink(bind_sock);
922
923 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
924
925 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
926 log_err("fio: bind: %s\n", strerror(errno));
927 close(sk);
928 return -1;
929 }
930
931 umask(mode);
932 return sk;
933}
934
935static int fio_init_server_connection(void)
936{
937 char bind_str[128];
938 int sk;
939
940 dprint(FD_NET, "starting server\n");
941
942 if (!bind_sock)
943 sk = fio_init_server_ip();
944 else
945 sk = fio_init_server_sock();
946
947 if (sk < 0)
948 return sk;
949
950 if (!bind_sock) {
951 char *p, port[16];
952 const void *src;
953 int af;
954
955 if (use_ipv6) {
956 af = AF_INET6;
957 src = &saddr_in6.sin6_addr;
958 } else {
959 af = AF_INET;
960 src = &saddr_in.sin_addr;
961 }
962
963 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
964
965 sprintf(port, ",%u", fio_net_port);
966 if (p)
967 strcat(p, port);
968 else
969 strcpy(bind_str, port);
970 } else
971 strcpy(bind_str, bind_sock);
972
973 log_info("fio: server listening on %s\n", bind_str);
974
975 if (listen(sk, 0) < 0) {
976 log_err("fio: listen: %s\n", strerror(errno));
977 return -1;
978 }
979
980 return sk;
981}
982
983int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
984 struct in6_addr *inp6)
985
986{
987 int ret = 0;
988
989 if (*ipv6)
990 ret = inet_pton(AF_INET6, host, inp6);
991 else
992 ret = inet_pton(AF_INET, host, inp);
993
994 if (ret != 1) {
995 struct hostent *hent;
996
997 hent = gethostbyname(host);
998 if (!hent) {
999 log_err("fio: failed to resolve <%s>\n", host);
1000 return 0;
1001 }
1002
1003 if (*ipv6) {
1004 if (hent->h_addrtype != AF_INET6) {
1005 log_info("fio: falling back to IPv4\n");
1006 *ipv6 = 0;
1007 } else
1008 memcpy(inp6, hent->h_addr_list[0], 16);
1009 }
1010 if (!*ipv6) {
1011 if (hent->h_addrtype != AF_INET) {
1012 log_err("fio: lookup type mismatch\n");
1013 return 0;
1014 }
1015 memcpy(inp, hent->h_addr_list[0], 4);
1016 }
1017 ret = 1;
1018 }
1019
1020 return !(ret == 1);
1021}
1022
1023/*
1024 * Parse a host/ip/port string. Reads from 'str'.
1025 *
1026 * Outputs:
1027 *
1028 * For IPv4:
1029 * *ptr is the host, *port is the port, inp is the destination.
1030 * For IPv6:
1031 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1032 * For local domain sockets:
1033 * *ptr is the filename, *is_sock is 1.
1034 */
1035int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1036 int *port, struct in_addr *inp,
1037 struct in6_addr *inp6, int *ipv6)
1038{
1039 const char *host = str;
1040 char *portp;
1041 int lport = 0;
1042
1043 *ptr = NULL;
1044 *is_sock = 0;
1045 *port = fio_net_port;
1046 *ipv6 = 0;
1047
1048 if (!strncmp(str, "sock:", 5)) {
1049 *ptr = strdup(str + 5);
1050 *is_sock = 1;
1051
1052 return 0;
1053 }
1054
1055 /*
1056 * Is it ip:<ip or host>:port
1057 */
1058 if (!strncmp(host, "ip:", 3))
1059 host += 3;
1060 else if (!strncmp(host, "ip4:", 4))
1061 host += 4;
1062 else if (!strncmp(host, "ip6:", 4)) {
1063 host += 4;
1064 *ipv6 = 1;
1065 } else if (host[0] == ':') {
1066 /* String is :port */
1067 host++;
1068 lport = atoi(host);
1069 if (!lport || lport > 65535) {
1070 log_err("fio: bad server port %u\n", port);
1071 return 1;
1072 }
1073 /* no hostname given, we are done */
1074 *port = lport;
1075 return 0;
1076 }
1077
1078 /*
1079 * If no port seen yet, check if there's a last ':' at the end
1080 */
1081 if (!lport) {
1082 portp = strchr(host, ',');
1083 if (portp) {
1084 *portp = '\0';
1085 portp++;
1086 lport = atoi(portp);
1087 if (!lport || lport > 65535) {
1088 log_err("fio: bad server port %u\n", port);
1089 return 1;
1090 }
1091 }
1092 }
1093
1094 if (lport)
1095 *port = lport;
1096
1097 if (!strlen(host))
1098 return 0;
1099
1100 *ptr = strdup(host);
1101
1102 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1103 free(*ptr);
1104 *ptr = NULL;
1105 return 1;
1106 }
1107
1108 if (*port == 0)
1109 *port = fio_net_port;
1110
1111 return 0;
1112}
1113
1114/*
1115 * Server arg should be one of:
1116 *
1117 * sock:/path/to/socket
1118 * ip:1.2.3.4
1119 * 1.2.3.4
1120 *
1121 * Where sock uses unix domain sockets, and ip binds the server to
1122 * a specific interface. If no arguments are given to the server, it
1123 * uses IP and binds to 0.0.0.0.
1124 *
1125 */
1126static int fio_handle_server_arg(void)
1127{
1128 int port = fio_net_port;
1129 int is_sock, ret = 0;
1130
1131 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1132
1133 if (!fio_server_arg)
1134 goto out;
1135
1136 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1137 &port, &saddr_in.sin_addr,
1138 &saddr_in6.sin6_addr, &use_ipv6);
1139
1140 if (!is_sock && bind_sock) {
1141 free(bind_sock);
1142 bind_sock = NULL;
1143 }
1144
1145out:
1146 fio_net_port = port;
1147 saddr_in.sin_port = htons(port);
1148 saddr_in6.sin6_port = htons(port);
1149 return ret;
1150}
1151
1152static int fio_server(void)
1153{
1154 int sk, ret;
1155
1156 dprint(FD_NET, "starting server\n");
1157
1158 if (fio_handle_server_arg())
1159 return -1;
1160
1161 sk = fio_init_server_connection();
1162 if (sk < 0)
1163 return -1;
1164
1165 ret = accept_loop(sk);
1166
1167 close(sk);
1168
1169 if (fio_server_arg) {
1170 free(fio_server_arg);
1171 fio_server_arg = NULL;
1172 }
1173 if (bind_sock)
1174 free(bind_sock);
1175
1176 return ret;
1177}
1178
1179void fio_server_got_signal(int signal)
1180{
1181 if (signal == SIGPIPE)
1182 server_fd = -1;
1183 else {
1184 log_info("\nfio: terminating on signal %d\n", signal);
1185 exit_backend = 1;
1186 }
1187}
1188
1189static int check_existing_pidfile(const char *pidfile)
1190{
1191 struct stat sb;
1192 char buf[16];
1193 pid_t pid;
1194 FILE *f;
1195
1196 if (stat(pidfile, &sb))
1197 return 0;
1198
1199 f = fopen(pidfile, "r");
1200 if (!f)
1201 return 0;
1202
1203 if (fread(buf, sb.st_size, 1, f) <= 0) {
1204 fclose(f);
1205 return 1;
1206 }
1207 fclose(f);
1208
1209 pid = atoi(buf);
1210 if (kill(pid, SIGCONT) < 0)
1211 return errno != ESRCH;
1212
1213 return 1;
1214}
1215
1216static int write_pid(pid_t pid, const char *pidfile)
1217{
1218 FILE *fpid;
1219
1220 fpid = fopen(pidfile, "w");
1221 if (!fpid) {
1222 log_err("fio: failed opening pid file %s\n", pidfile);
1223 return 1;
1224 }
1225
1226 fprintf(fpid, "%u\n", (unsigned int) pid);
1227 fclose(fpid);
1228 return 0;
1229}
1230
1231/*
1232 * If pidfile is specified, background us.
1233 */
1234int fio_start_server(char *pidfile)
1235{
1236 pid_t pid;
1237 int ret;
1238
1239#if defined(WIN32)
1240 WSADATA wsd;
1241 WSAStartup(MAKEWORD(2,2), &wsd);
1242#endif
1243
1244 if (!pidfile)
1245 return fio_server();
1246
1247 if (check_existing_pidfile(pidfile)) {
1248 log_err("fio: pidfile %s exists and server appears alive\n",
1249 pidfile);
1250 return -1;
1251 }
1252
1253 pid = fork();
1254 if (pid < 0) {
1255 log_err("fio: failed server fork: %s", strerror(errno));
1256 free(pidfile);
1257 return -1;
1258 } else if (pid) {
1259 int ret = write_pid(pid, pidfile);
1260
1261 exit(ret);
1262 }
1263
1264 setsid();
1265 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1266 log_syslog = 1;
1267 close(STDIN_FILENO);
1268 close(STDOUT_FILENO);
1269 close(STDERR_FILENO);
1270 f_out = NULL;
1271 f_err = NULL;
1272
1273 ret = fio_server();
1274
1275 closelog();
1276 unlink(pidfile);
1277 free(pidfile);
1278 return ret;
1279}
1280
1281void fio_server_set_arg(const char *arg)
1282{
1283 fio_server_arg = strdup(arg);
1284}
fio - Flexible IO Tester