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Unify options with gfio
[fio.git] / server.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <fcntl.h>
8#include <sys/poll.h>
9#include <sys/types.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/stat.h>
13#include <sys/un.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19
20#include "fio.h"
21#include "server.h"
22#include "crc/crc16.h"
23#include "lib/ieee754.h"
24
25int fio_net_port = 8765;
26
27int exit_backend = 0;
28
29static int server_fd = -1;
30static char *fio_server_arg;
31static char *bind_sock;
32static struct sockaddr_in saddr_in;
33static struct sockaddr_in6 saddr_in6;
34static int first_cmd_check;
35static int use_ipv6;
36
37static const char *fio_server_ops[FIO_NET_CMD_NR] = {
38 "",
39 "QUIT",
40 "EXIT",
41 "JOB",
42 "JOBLINE",
43 "TEXT",
44 "TS",
45 "GS",
46 "SEND_ETA",
47 "ETA",
48 "PROBE",
49 "START",
50 "STOP",
51 "DISK_UTIL",
52 "RUN",
53};
54
55const char *fio_server_op(unsigned int op)
56{
57 static char buf[32];
58
59 if (op < FIO_NET_CMD_NR)
60 return fio_server_ops[op];
61
62 sprintf(buf, "UNKNOWN/%d", op);
63 return buf;
64}
65
66int fio_send_data(int sk, const void *p, unsigned int len)
67{
68 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
69
70 do {
71 int ret = send(sk, p, len, 0);
72
73 if (ret > 0) {
74 len -= ret;
75 if (!len)
76 break;
77 p += ret;
78 continue;
79 } else if (!ret)
80 break;
81 else if (errno == EAGAIN || errno == EINTR)
82 continue;
83 else
84 break;
85 } while (!exit_backend);
86
87 if (!len)
88 return 0;
89
90 return 1;
91}
92
93int fio_recv_data(int sk, void *p, unsigned int len)
94{
95 do {
96 int ret = recv(sk, p, len, MSG_WAITALL);
97
98 if (ret > 0) {
99 len -= ret;
100 if (!len)
101 break;
102 p += ret;
103 continue;
104 } else if (!ret)
105 break;
106 else if (errno == EAGAIN || errno == EINTR)
107 continue;
108 else
109 break;
110 } while (!exit_backend);
111
112 if (!len)
113 return 0;
114
115 return -1;
116}
117
118static int verify_convert_cmd(struct fio_net_cmd *cmd)
119{
120 uint16_t crc;
121
122 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
123 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
124
125 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
126 if (crc != cmd->cmd_crc16) {
127 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
128 cmd->cmd_crc16, crc);
129 return 1;
130 }
131
132 cmd->version = le16_to_cpu(cmd->version);
133 cmd->opcode = le16_to_cpu(cmd->opcode);
134 cmd->flags = le32_to_cpu(cmd->flags);
135 cmd->tag = le64_to_cpu(cmd->tag);
136 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
137
138 switch (cmd->version) {
139 case FIO_SERVER_VER:
140 break;
141 default:
142 log_err("fio: bad server cmd version %d\n", cmd->version);
143 return 1;
144 }
145
146 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
147 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
148 return 1;
149 }
150
151 return 0;
152}
153
154/*
155 * Read (and defragment, if necessary) incoming commands
156 */
157struct fio_net_cmd *fio_net_recv_cmd(int sk)
158{
159 struct fio_net_cmd cmd, *cmdret = NULL;
160 size_t cmd_size = 0, pdu_offset = 0;
161 uint16_t crc;
162 int ret, first = 1;
163 void *pdu = NULL;
164
165 do {
166 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
167 if (ret)
168 break;
169
170 /* We have a command, verify it and swap if need be */
171 ret = verify_convert_cmd(&cmd);
172 if (ret)
173 break;
174
175 if (first) {
176 /* if this is text, add room for \0 at the end */
177 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
178 assert(!cmdret);
179 } else
180 cmd_size += cmd.pdu_len;
181
182 cmdret = realloc(cmdret, cmd_size);
183
184 if (first)
185 memcpy(cmdret, &cmd, sizeof(cmd));
186 else if (cmdret->opcode != cmd.opcode) {
187 log_err("fio: fragment opcode mismatch (%d != %d)\n",
188 cmdret->opcode, cmd.opcode);
189 ret = 1;
190 break;
191 }
192
193 if (!cmd.pdu_len)
194 break;
195
196 /* There's payload, get it */
197 pdu = (void *) cmdret->payload + pdu_offset;
198 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
199 if (ret)
200 break;
201
202 /* Verify payload crc */
203 crc = fio_crc16(pdu, cmd.pdu_len);
204 if (crc != cmd.pdu_crc16) {
205 log_err("fio: server bad crc on payload ");
206 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
207 ret = 1;
208 break;
209 }
210
211 pdu_offset += cmd.pdu_len;
212 if (!first)
213 cmdret->pdu_len += cmd.pdu_len;
214 first = 0;
215 } while (cmd.flags & FIO_NET_CMD_F_MORE);
216
217 if (ret) {
218 free(cmdret);
219 cmdret = NULL;
220 } else if (cmdret) {
221 /* zero-terminate text input */
222 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
223 cmdret->opcode == FIO_NET_CMD_JOB)) {
224 char *buf = (char *) cmdret->payload;
225
226 buf[cmdret->pdu_len ] = '\0';
227 }
228 /* frag flag is internal */
229 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
230 }
231
232 return cmdret;
233}
234
235void fio_net_cmd_crc(struct fio_net_cmd *cmd)
236{
237 uint32_t pdu_len;
238
239 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
240
241 pdu_len = le32_to_cpu(cmd->pdu_len);
242 if (pdu_len)
243 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
244}
245
246int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
247 uint64_t tag)
248{
249 struct fio_net_cmd *cmd = NULL;
250 size_t this_len, cur_len = 0;
251 int ret;
252
253 do {
254 this_len = size;
255 if (this_len > FIO_SERVER_MAX_PDU)
256 this_len = FIO_SERVER_MAX_PDU;
257
258 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
259 if (cmd)
260 free(cmd);
261
262 cur_len = sizeof(*cmd) + this_len;
263 cmd = malloc(cur_len);
264 }
265
266 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
267
268 if (this_len < size)
269 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
270
271 fio_net_cmd_crc(cmd);
272
273 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
274 size -= this_len;
275 buf += this_len;
276 } while (!ret && size);
277
278 if (cmd)
279 free(cmd);
280
281 return ret;
282}
283
284static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
285{
286 struct fio_net_cmd cmd;
287
288 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
289 fio_net_cmd_crc(&cmd);
290
291 return fio_send_data(sk, &cmd, sizeof(cmd));
292}
293
294/*
295 * If 'list' is non-NULL, then allocate and store the sent command for
296 * later verification.
297 */
298int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
299 struct flist_head *list)
300{
301 struct fio_net_int_cmd *cmd;
302 int ret;
303
304 if (!list)
305 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
306
307 cmd = malloc(sizeof(*cmd));
308
309 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
310 fio_net_cmd_crc(&cmd->cmd);
311
312 INIT_FLIST_HEAD(&cmd->list);
313 fio_gettime(&cmd->tv, NULL);
314 cmd->saved_tag = tag;
315
316 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
317 if (ret) {
318 free(cmd);
319 return ret;
320 }
321
322 flist_add_tail(&cmd->list, list);
323 return 0;
324}
325
326static int fio_server_send_quit_cmd(void)
327{
328 dprint(FD_NET, "server: sending quit\n");
329 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
330}
331
332static int handle_job_cmd(struct fio_net_cmd *cmd)
333{
334 char *buf = (char *) cmd->payload;
335 struct cmd_start_pdu spdu;
336 struct cmd_end_pdu epdu;
337 int ret;
338
339 if (parse_jobs_ini(buf, 1, 0)) {
340 fio_server_send_quit_cmd();
341 return -1;
342 }
343
344 spdu.jobs = cpu_to_le32(thread_number);
345 spdu.stat_outputs = cpu_to_le32(stat_number);
346 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
347
348 ret = fio_backend();
349
350 epdu.error = ret;
351 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
352
353 fio_server_send_quit_cmd();
354 reset_fio_state();
355 return ret;
356}
357
358static int handle_jobline_cmd(struct fio_net_cmd *cmd)
359{
360 void *pdu = cmd->payload;
361 struct cmd_single_line_pdu *cslp;
362 struct cmd_line_pdu *clp;
363 unsigned long offset;
364 char **argv;
365 int ret, i;
366
367 clp = pdu;
368 clp->lines = le16_to_cpu(clp->lines);
369 argv = malloc(clp->lines * sizeof(char *));
370 offset = sizeof(*clp);
371
372 dprint(FD_NET, "server: %d command line args\n", clp->lines);
373
374 for (i = 0; i < clp->lines; i++) {
375 cslp = pdu + offset;
376 argv[i] = (char *) cslp->text;
377
378 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
379 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
380 }
381
382 if (parse_cmd_line(clp->lines, argv)) {
383 fio_server_send_quit_cmd();
384 free(argv);
385 return -1;
386 }
387
388 free(argv);
389
390 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
391
392 ret = fio_backend();
393 fio_server_send_quit_cmd();
394 reset_fio_state();
395 return ret;
396}
397
398static int handle_probe_cmd(struct fio_net_cmd *cmd)
399{
400 struct cmd_probe_pdu probe;
401
402 dprint(FD_NET, "server: sending probe reply\n");
403
404 memset(&probe, 0, sizeof(probe));
405 gethostname((char *) probe.hostname, sizeof(probe.hostname));
406#ifdef CONFIG_BIG_ENDIAN
407 probe.bigendian = 1;
408#endif
409 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
410
411 probe.os = FIO_OS;
412 probe.arch = FIO_ARCH;
413
414 probe.bpp = sizeof(void *);
415
416 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
417}
418
419static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
420{
421 struct jobs_eta *je;
422 size_t size;
423 int i;
424
425 if (!thread_number)
426 return 0;
427
428 size = sizeof(*je) + thread_number * sizeof(char) + 1;
429 je = malloc(size);
430 memset(je, 0, size);
431
432 if (!calc_thread_status(je, 1)) {
433 free(je);
434 return 0;
435 }
436
437 dprint(FD_NET, "server sending status\n");
438
439 je->nr_running = cpu_to_le32(je->nr_running);
440 je->nr_ramp = cpu_to_le32(je->nr_ramp);
441 je->nr_pending = cpu_to_le32(je->nr_pending);
442 je->files_open = cpu_to_le32(je->files_open);
443 je->m_rate = cpu_to_le32(je->m_rate);
444 je->t_rate = cpu_to_le32(je->t_rate);
445 je->m_iops = cpu_to_le32(je->m_iops);
446 je->t_iops = cpu_to_le32(je->t_iops);
447
448 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
449 je->rate[i] = cpu_to_le32(je->rate[i]);
450 je->iops[i] = cpu_to_le32(je->iops[i]);
451 }
452
453 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
454 je->eta_sec = cpu_to_le64(je->eta_sec);
455 je->is_pow2 = cpu_to_le32(je->is_pow2);
456
457 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
458 free(je);
459 return 0;
460}
461
462static int handle_command(struct fio_net_cmd *cmd)
463{
464 int ret;
465
466 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
467 fio_server_op(cmd->opcode), cmd->pdu_len,
468 (unsigned long long) cmd->tag);
469
470 switch (cmd->opcode) {
471 case FIO_NET_CMD_QUIT:
472 fio_terminate_threads(TERMINATE_ALL);
473 return -1;
474 case FIO_NET_CMD_EXIT:
475 exit_backend = 1;
476 return -1;
477 case FIO_NET_CMD_JOB:
478 ret = handle_job_cmd(cmd);
479 break;
480 case FIO_NET_CMD_JOBLINE:
481 ret = handle_jobline_cmd(cmd);
482 break;
483 case FIO_NET_CMD_PROBE:
484 ret = handle_probe_cmd(cmd);
485 break;
486 case FIO_NET_CMD_SEND_ETA:
487 ret = handle_send_eta_cmd(cmd);
488 break;
489 default:
490 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
491 ret = 1;
492 }
493
494 return ret;
495}
496
497static int handle_connection(int sk, int block)
498{
499 struct fio_net_cmd *cmd = NULL;
500 int ret = 0;
501
502 /* read forever */
503 while (!exit_backend) {
504 struct pollfd pfd = {
505 .fd = sk,
506 .events = POLLIN,
507 };
508
509 ret = 0;
510 do {
511 ret = poll(&pfd, 1, 100);
512 if (ret < 0) {
513 if (errno == EINTR)
514 break;
515 log_err("fio: poll: %s\n", strerror(errno));
516 break;
517 } else if (!ret) {
518 if (!block)
519 return 0;
520 continue;
521 }
522
523 if (pfd.revents & POLLIN)
524 break;
525 if (pfd.revents & (POLLERR|POLLHUP)) {
526 ret = 1;
527 break;
528 }
529 } while (!exit_backend);
530
531 if (ret < 0)
532 break;
533
534 cmd = fio_net_recv_cmd(sk);
535 if (!cmd) {
536 ret = -1;
537 break;
538 }
539
540 ret = handle_command(cmd);
541 if (ret)
542 break;
543
544 free(cmd);
545 cmd = NULL;
546 }
547
548 if (cmd)
549 free(cmd);
550
551 return ret;
552}
553
554void fio_server_idle_loop(void)
555{
556 if (!first_cmd_check)
557 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
558 if (server_fd != -1)
559 handle_connection(server_fd, 0);
560}
561
562static int accept_loop(int listen_sk)
563{
564 struct sockaddr_in addr;
565 socklen_t len = sizeof(addr);
566 struct pollfd pfd;
567 int ret, sk, flags, exitval = 0;
568
569 dprint(FD_NET, "server enter accept loop\n");
570
571 flags = fcntl(listen_sk, F_GETFL);
572 flags |= O_NONBLOCK;
573 fcntl(listen_sk, F_SETFL, flags);
574again:
575 pfd.fd = listen_sk;
576 pfd.events = POLLIN;
577 do {
578 ret = poll(&pfd, 1, 100);
579 if (ret < 0) {
580 if (errno == EINTR)
581 break;
582 log_err("fio: poll: %s\n", strerror(errno));
583 goto out;
584 } else if (!ret)
585 continue;
586
587 if (pfd.revents & POLLIN)
588 break;
589 } while (!exit_backend);
590
591 if (exit_backend)
592 goto out;
593
594 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
595 if (sk < 0) {
596 log_err("fio: accept: %s\n", strerror(errno));
597 return -1;
598 }
599
600 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
601
602 server_fd = sk;
603
604 exitval = handle_connection(sk, 1);
605
606 server_fd = -1;
607 close(sk);
608
609 if (!exit_backend)
610 goto again;
611
612out:
613 return exitval;
614}
615
616int fio_server_text_output(const char *buf, size_t len)
617{
618 if (server_fd != -1)
619 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
620
621 return log_local_buf(buf, len);
622}
623
624static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
625{
626 dst->max_val = cpu_to_le64(src->max_val);
627 dst->min_val = cpu_to_le64(src->min_val);
628 dst->samples = cpu_to_le64(src->samples);
629
630 /*
631 * Encode to IEEE 754 for network transfer
632 */
633 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
634 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
635}
636
637static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
638{
639 int i;
640
641 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
642 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
643 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
644 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
645 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
646 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
647 dst->agg[i] = cpu_to_le64(src->agg[i]);
648 }
649
650 dst->kb_base = cpu_to_le32(src->kb_base);
651 dst->unit_base = cpu_to_le32(src->unit_base);
652 dst->groupid = cpu_to_le32(src->groupid);
653 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
654}
655
656/*
657 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
658 * into a single payload.
659 */
660void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
661{
662 struct cmd_ts_pdu p;
663 int i, j;
664
665 dprint(FD_NET, "server sending end stats\n");
666
667 memset(&p, 0, sizeof(p));
668
669 strcpy(p.ts.name, ts->name);
670 strcpy(p.ts.verror, ts->verror);
671 strcpy(p.ts.description, ts->description);
672
673 p.ts.error = cpu_to_le32(ts->error);
674 p.ts.groupid = cpu_to_le32(ts->groupid);
675 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
676 p.ts.pid = cpu_to_le32(ts->pid);
677 p.ts.members = cpu_to_le32(ts->members);
678 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
679
680 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
681 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
682 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
683 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
684 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
685 }
686
687 p.ts.usr_time = cpu_to_le64(ts->usr_time);
688 p.ts.sys_time = cpu_to_le64(ts->sys_time);
689 p.ts.ctx = cpu_to_le64(ts->ctx);
690 p.ts.minf = cpu_to_le64(ts->minf);
691 p.ts.majf = cpu_to_le64(ts->majf);
692 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
693
694 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
695 fio_fp64_t *src = &ts->percentile_list[i];
696 fio_fp64_t *dst = &p.ts.percentile_list[i];
697
698 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
699 }
700
701 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
702 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
703 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
704 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
705 }
706
707 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
708 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
709 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
710 }
711
712 for (i = 0; i < DDIR_RWDIR_CNT; i++)
713 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
714 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
715
716 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
717 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
718 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
719 }
720
721 p.ts.total_submit = cpu_to_le64(ts->total_submit);
722 p.ts.total_complete = cpu_to_le64(ts->total_complete);
723
724 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
725 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
726 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
727 }
728
729 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
730 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
731 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
732 p.ts.first_error = cpu_to_le32(ts->first_error);
733 p.ts.kb_base = cpu_to_le32(ts->kb_base);
734 p.ts.unit_base = cpu_to_le32(ts->unit_base);
735
736 convert_gs(&p.rs, rs);
737
738 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
739}
740
741void fio_server_send_gs(struct group_run_stats *rs)
742{
743 struct group_run_stats gs;
744
745 dprint(FD_NET, "server sending group run stats\n");
746
747 convert_gs(&gs, rs);
748 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
749}
750
751static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
752{
753 int i;
754
755 for (i = 0; i < 2; i++) {
756 dst->ios[i] = cpu_to_le32(src->ios[i]);
757 dst->merges[i] = cpu_to_le32(src->merges[i]);
758 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
759 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
760 }
761
762 dst->io_ticks = cpu_to_le32(src->io_ticks);
763 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
764 dst->slavecount = cpu_to_le32(src->slavecount);
765 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
766}
767
768static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
769{
770 int i;
771
772 strcpy((char *) dst->name, (char *) src->name);
773
774 for (i = 0; i < 2; i++) {
775 dst->ios[i] = cpu_to_le32(src->ios[i]);
776 dst->merges[i] = cpu_to_le32(src->merges[i]);
777 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
778 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
779 }
780
781 dst->io_ticks = cpu_to_le32(src->io_ticks);
782 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
783 dst->msec = cpu_to_le64(src->msec);
784}
785
786void fio_server_send_du(void)
787{
788 struct disk_util *du;
789 struct flist_head *entry;
790 struct cmd_du_pdu pdu;
791
792 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
793
794 memset(&pdu, 0, sizeof(pdu));
795
796 flist_for_each(entry, &disk_list) {
797 du = flist_entry(entry, struct disk_util, list);
798
799 convert_dus(&pdu.dus, &du->dus);
800 convert_agg(&pdu.agg, &du->agg);
801
802 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
803 }
804}
805
806int fio_server_log(const char *format, ...)
807{
808 char buffer[1024];
809 va_list args;
810 size_t len;
811
812 dprint(FD_NET, "server log\n");
813
814 va_start(args, format);
815 len = vsnprintf(buffer, sizeof(buffer), format, args);
816 va_end(args);
817 len = min(len, sizeof(buffer) - 1);
818
819 return fio_server_text_output(buffer, len);
820}
821
822static int fio_init_server_ip(void)
823{
824 struct sockaddr *addr;
825 socklen_t socklen;
826 int sk, opt;
827
828 if (use_ipv6)
829 sk = socket(AF_INET6, SOCK_STREAM, 0);
830 else
831 sk = socket(AF_INET, SOCK_STREAM, 0);
832
833 if (sk < 0) {
834 log_err("fio: socket: %s\n", strerror(errno));
835 return -1;
836 }
837
838 opt = 1;
839 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
840 log_err("fio: setsockopt: %s\n", strerror(errno));
841 close(sk);
842 return -1;
843 }
844#ifdef SO_REUSEPORT
845 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
846 log_err("fio: setsockopt: %s\n", strerror(errno));
847 close(sk);
848 return -1;
849 }
850#endif
851
852 if (use_ipv6) {
853 addr = (struct sockaddr *) &saddr_in6;
854 socklen = sizeof(saddr_in6);
855 saddr_in6.sin6_family = AF_INET6;
856 } else {
857 addr = (struct sockaddr *) &saddr_in;
858 socklen = sizeof(saddr_in);
859 saddr_in.sin_family = AF_INET;
860 }
861
862 if (bind(sk, addr, socklen) < 0) {
863 log_err("fio: bind: %s\n", strerror(errno));
864 close(sk);
865 return -1;
866 }
867
868 return sk;
869}
870
871static int fio_init_server_sock(void)
872{
873 struct sockaddr_un addr;
874 socklen_t len;
875 mode_t mode;
876 int sk;
877
878 sk = socket(AF_UNIX, SOCK_STREAM, 0);
879 if (sk < 0) {
880 log_err("fio: socket: %s\n", strerror(errno));
881 return -1;
882 }
883
884 mode = umask(000);
885
886 memset(&addr, 0, sizeof(addr));
887 addr.sun_family = AF_UNIX;
888 strcpy(addr.sun_path, bind_sock);
889 unlink(bind_sock);
890
891 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
892
893 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
894 log_err("fio: bind: %s\n", strerror(errno));
895 close(sk);
896 return -1;
897 }
898
899 umask(mode);
900 return sk;
901}
902
903static int fio_init_server_connection(void)
904{
905 char bind_str[128];
906 int sk;
907
908 dprint(FD_NET, "starting server\n");
909
910 if (!bind_sock)
911 sk = fio_init_server_ip();
912 else
913 sk = fio_init_server_sock();
914
915 if (sk < 0)
916 return sk;
917
918 if (!bind_sock) {
919 char *p, port[16];
920 const void *src;
921 int af;
922
923 if (use_ipv6) {
924 af = AF_INET6;
925 src = &saddr_in6.sin6_addr;
926 } else {
927 af = AF_INET;
928 src = &saddr_in.sin_addr;
929 }
930
931 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
932
933 sprintf(port, ",%u", fio_net_port);
934 if (p)
935 strcat(p, port);
936 else
937 strcpy(bind_str, port);
938 } else
939 strcpy(bind_str, bind_sock);
940
941 log_info("fio: server listening on %s\n", bind_str);
942
943 if (listen(sk, 0) < 0) {
944 log_err("fio: listen: %s\n", strerror(errno));
945 return -1;
946 }
947
948 return sk;
949}
950
951/*
952 * Parse a host/ip/port string. Reads from 'str'.
953 *
954 * Outputs:
955 *
956 * For IPv4:
957 * *ptr is the host, *port is the port, inp is the destination.
958 * For IPv6:
959 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
960 * For local domain sockets:
961 * *ptr is the filename, *is_sock is 1.
962 */
963int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
964 int *port, struct in_addr *inp,
965 struct in6_addr *inp6, int *ipv6)
966{
967 const char *host = str;
968 char *portp;
969 int ret, lport = 0;
970
971 *ptr = NULL;
972 *is_sock = 0;
973 *port = fio_net_port;
974 *ipv6 = 0;
975
976 if (!strncmp(str, "sock:", 5)) {
977 *ptr = strdup(str + 5);
978 *is_sock = 1;
979
980 return 0;
981 }
982
983 /*
984 * Is it ip:<ip or host>:port
985 */
986 if (!strncmp(host, "ip:", 3))
987 host += 3;
988 else if (!strncmp(host, "ip4:", 4))
989 host += 4;
990 else if (!strncmp(host, "ip6:", 4)) {
991 host += 4;
992 *ipv6 = 1;
993 } else if (host[0] == ':') {
994 /* String is :port */
995 host++;
996 lport = atoi(host);
997 if (!lport || lport > 65535) {
998 log_err("fio: bad server port %u\n", port);
999 return 1;
1000 }
1001 /* no hostname given, we are done */
1002 *port = lport;
1003 return 0;
1004 }
1005
1006 /*
1007 * If no port seen yet, check if there's a last ':' at the end
1008 */
1009 if (!lport) {
1010 portp = strchr(host, ',');
1011 if (portp) {
1012 *portp = '\0';
1013 portp++;
1014 lport = atoi(portp);
1015 if (!lport || lport > 65535) {
1016 log_err("fio: bad server port %u\n", port);
1017 return 1;
1018 }
1019 }
1020 }
1021
1022 if (lport)
1023 *port = lport;
1024
1025 if (!strlen(host))
1026 return 0;
1027
1028 *ptr = strdup(host);
1029
1030 if (*ipv6)
1031 ret = inet_pton(AF_INET6, host, inp6);
1032 else
1033 ret = inet_pton(AF_INET, host, inp);
1034
1035 if (ret != 1) {
1036 struct hostent *hent;
1037
1038 hent = gethostbyname(host);
1039 if (!hent) {
1040 log_err("fio: failed to resolve <%s>\n", host);
1041 free(*ptr);
1042 *ptr = NULL;
1043 return 1;
1044 }
1045
1046 if (*ipv6) {
1047 if (hent->h_addrtype != AF_INET6) {
1048 log_info("fio: falling back to IPv4\n");
1049 *ipv6 = 0;
1050 } else
1051 memcpy(inp6, hent->h_addr_list[0], 16);
1052 }
1053 if (!*ipv6) {
1054 if (hent->h_addrtype != AF_INET) {
1055 log_err("fio: lookup type mismatch\n");
1056 free(*ptr);
1057 *ptr = NULL;
1058 return 1;
1059 }
1060 memcpy(inp, hent->h_addr_list[0], 4);
1061 }
1062 }
1063
1064 if (*port == 0)
1065 *port = fio_net_port;
1066
1067 return 0;
1068}
1069
1070/*
1071 * Server arg should be one of:
1072 *
1073 * sock:/path/to/socket
1074 * ip:1.2.3.4
1075 * 1.2.3.4
1076 *
1077 * Where sock uses unix domain sockets, and ip binds the server to
1078 * a specific interface. If no arguments are given to the server, it
1079 * uses IP and binds to 0.0.0.0.
1080 *
1081 */
1082static int fio_handle_server_arg(void)
1083{
1084 int port = fio_net_port;
1085 int is_sock, ret = 0;
1086
1087 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1088
1089 if (!fio_server_arg)
1090 goto out;
1091
1092 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1093 &port, &saddr_in.sin_addr,
1094 &saddr_in6.sin6_addr, &use_ipv6);
1095
1096 if (!is_sock && bind_sock) {
1097 free(bind_sock);
1098 bind_sock = NULL;
1099 }
1100
1101out:
1102 fio_net_port = port;
1103 saddr_in.sin_port = htons(port);
1104 saddr_in6.sin6_port = htons(port);
1105 return ret;
1106}
1107
1108static int fio_server(void)
1109{
1110 int sk, ret;
1111
1112 dprint(FD_NET, "starting server\n");
1113
1114 if (fio_handle_server_arg())
1115 return -1;
1116
1117 sk = fio_init_server_connection();
1118 if (sk < 0)
1119 return -1;
1120
1121 ret = accept_loop(sk);
1122
1123 close(sk);
1124
1125 if (fio_server_arg) {
1126 free(fio_server_arg);
1127 fio_server_arg = NULL;
1128 }
1129 if (bind_sock)
1130 free(bind_sock);
1131
1132 return ret;
1133}
1134
1135void fio_server_got_signal(int signal)
1136{
1137 if (signal == SIGPIPE)
1138 server_fd = -1;
1139 else {
1140 log_info("\nfio: terminating on signal %d\n", signal);
1141 exit_backend = 1;
1142 }
1143}
1144
1145static int check_existing_pidfile(const char *pidfile)
1146{
1147 struct stat sb;
1148 char buf[16];
1149 pid_t pid;
1150 FILE *f;
1151
1152 if (stat(pidfile, &sb))
1153 return 0;
1154
1155 f = fopen(pidfile, "r");
1156 if (!f)
1157 return 0;
1158
1159 if (fread(buf, sb.st_size, 1, f) <= 0) {
1160 fclose(f);
1161 return 1;
1162 }
1163 fclose(f);
1164
1165 pid = atoi(buf);
1166 if (kill(pid, SIGCONT) < 0)
1167 return errno != ESRCH;
1168
1169 return 1;
1170}
1171
1172static int write_pid(pid_t pid, const char *pidfile)
1173{
1174 FILE *fpid;
1175
1176 fpid = fopen(pidfile, "w");
1177 if (!fpid) {
1178 log_err("fio: failed opening pid file %s\n", pidfile);
1179 return 1;
1180 }
1181
1182 fprintf(fpid, "%u\n", (unsigned int) pid);
1183 fclose(fpid);
1184 return 0;
1185}
1186
1187/*
1188 * If pidfile is specified, background us.
1189 */
1190int fio_start_server(char *pidfile)
1191{
1192 pid_t pid;
1193 int ret;
1194
1195#if defined(WIN32)
1196 WSADATA wsd;
1197 WSAStartup(MAKEWORD(2,2), &wsd);
1198#endif
1199
1200 if (!pidfile)
1201 return fio_server();
1202
1203 if (check_existing_pidfile(pidfile)) {
1204 log_err("fio: pidfile %s exists and server appears alive\n",
1205 pidfile);
1206 return -1;
1207 }
1208
1209 pid = fork();
1210 if (pid < 0) {
1211 log_err("fio: failed server fork: %s", strerror(errno));
1212 free(pidfile);
1213 return -1;
1214 } else if (pid) {
1215 int ret = write_pid(pid, pidfile);
1216
1217 exit(ret);
1218 }
1219
1220 setsid();
1221 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1222 log_syslog = 1;
1223 close(STDIN_FILENO);
1224 close(STDOUT_FILENO);
1225 close(STDERR_FILENO);
1226 f_out = NULL;
1227 f_err = NULL;
1228
1229 ret = fio_server();
1230
1231 closelog();
1232 unlink(pidfile);
1233 free(pidfile);
1234 return ret;
1235}
1236
1237void fio_server_set_arg(const char *arg)
1238{
1239 fio_server_arg = strdup(arg);
1240}
fio - Flexible IO Tester