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