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server: always end back ETA reply
[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 <sys/poll.h>
8#include <sys/types.h>
9#include <sys/wait.h>
10#include <sys/socket.h>
11#include <sys/stat.h>
12#include <sys/un.h>
13#include <sys/uio.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19#ifdef CONFIG_ZLIB
20#include <zlib.h>
21#endif
22
23#include "fio.h"
24#include "options.h"
25#include "server.h"
26#include "crc/crc16.h"
27#include "lib/ieee754.h"
28#include "verify.h"
29#include "smalloc.h"
30
31int fio_net_port = FIO_NET_PORT;
32
33int exit_backend = 0;
34
35static int server_fd = -1;
36static char *fio_server_arg;
37static char *bind_sock;
38static struct sockaddr_in saddr_in;
39static struct sockaddr_in6 saddr_in6;
40static int use_ipv6;
41#ifdef CONFIG_ZLIB
42static unsigned int has_zlib = 1;
43#else
44static unsigned int has_zlib = 0;
45#endif
46static unsigned int use_zlib;
47static char me[128];
48
49struct fio_fork_item {
50 struct flist_head list;
51 int exitval;
52 int signal;
53 int exited;
54 pid_t pid;
55};
56
57struct cmd_reply {
58 struct fio_mutex lock;
59 void *data;
60 size_t size;
61 int error;
62};
63
64static const char *fio_server_ops[FIO_NET_CMD_NR] = {
65 "",
66 "QUIT",
67 "EXIT",
68 "JOB",
69 "JOBLINE",
70 "TEXT",
71 "TS",
72 "GS",
73 "SEND_ETA",
74 "ETA",
75 "PROBE",
76 "START",
77 "STOP",
78 "DISK_UTIL",
79 "SERVER_START",
80 "ADD_JOB",
81 "RUN",
82 "IOLOG",
83 "UPDATE_JOB",
84 "LOAD_FILE",
85 "VTRIGGER",
86 "SENDFILE",
87};
88
89const char *fio_server_op(unsigned int op)
90{
91 static char buf[32];
92
93 if (op < FIO_NET_CMD_NR)
94 return fio_server_ops[op];
95
96 sprintf(buf, "UNKNOWN/%d", op);
97 return buf;
98}
99
100static ssize_t iov_total_len(const struct iovec *iov, int count)
101{
102 ssize_t ret = 0;
103
104 while (count--) {
105 ret += iov->iov_len;
106 iov++;
107 }
108
109 return ret;
110}
111
112static int fio_sendv_data(int sk, struct iovec *iov, int count)
113{
114 ssize_t total_len = iov_total_len(iov, count);
115 ssize_t ret;
116
117 do {
118 ret = writev(sk, iov, count);
119 if (ret > 0) {
120 total_len -= ret;
121 if (!total_len)
122 break;
123
124 while (ret) {
125 if (ret >= iov->iov_len) {
126 ret -= iov->iov_len;
127 iov++;
128 continue;
129 }
130 iov->iov_base += ret;
131 iov->iov_len -= ret;
132 ret = 0;
133 }
134 } else if (!ret)
135 break;
136 else if (errno == EAGAIN || errno == EINTR)
137 continue;
138 else
139 break;
140 } while (!exit_backend);
141
142 if (!total_len)
143 return 0;
144
145 if (errno)
146 return -errno;
147
148 return 1;
149}
150
151int fio_send_data(int sk, const void *p, unsigned int len)
152{
153 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
154
155 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
156
157 return fio_sendv_data(sk, &iov, 1);
158}
159
160int fio_recv_data(int sk, void *p, unsigned int len)
161{
162 do {
163 int ret = recv(sk, p, len, MSG_WAITALL);
164
165 if (ret > 0) {
166 len -= ret;
167 if (!len)
168 break;
169 p += ret;
170 continue;
171 } else if (!ret)
172 break;
173 else if (errno == EAGAIN || errno == EINTR)
174 continue;
175 else
176 break;
177 } while (!exit_backend);
178
179 if (!len)
180 return 0;
181
182 return -1;
183}
184
185static int verify_convert_cmd(struct fio_net_cmd *cmd)
186{
187 uint16_t crc;
188
189 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
190 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
191
192 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
193 if (crc != cmd->cmd_crc16) {
194 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
195 cmd->cmd_crc16, crc);
196 return 1;
197 }
198
199 cmd->version = le16_to_cpu(cmd->version);
200 cmd->opcode = le16_to_cpu(cmd->opcode);
201 cmd->flags = le32_to_cpu(cmd->flags);
202 cmd->tag = le64_to_cpu(cmd->tag);
203 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
204
205 switch (cmd->version) {
206 case FIO_SERVER_VER:
207 break;
208 default:
209 log_err("fio: bad server cmd version %d\n", cmd->version);
210 return 1;
211 }
212
213 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
214 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
215 return 1;
216 }
217
218 return 0;
219}
220
221/*
222 * Read (and defragment, if necessary) incoming commands
223 */
224struct fio_net_cmd *fio_net_recv_cmd(int sk)
225{
226 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
227 size_t cmd_size = 0, pdu_offset = 0;
228 uint16_t crc;
229 int ret, first = 1;
230 void *pdu = NULL;
231
232 do {
233 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
234 if (ret)
235 break;
236
237 /* We have a command, verify it and swap if need be */
238 ret = verify_convert_cmd(&cmd);
239 if (ret)
240 break;
241
242 if (first) {
243 /* if this is text, add room for \0 at the end */
244 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
245 assert(!cmdret);
246 } else
247 cmd_size += cmd.pdu_len;
248
249 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
250 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
251 ret = 1;
252 break;
253 }
254
255 tmp = realloc(cmdret, cmd_size);
256 if (!tmp) {
257 log_err("fio: server failed allocating cmd\n");
258 ret = 1;
259 break;
260 }
261 cmdret = tmp;
262
263 if (first)
264 memcpy(cmdret, &cmd, sizeof(cmd));
265 else if (cmdret->opcode != cmd.opcode) {
266 log_err("fio: fragment opcode mismatch (%d != %d)\n",
267 cmdret->opcode, cmd.opcode);
268 ret = 1;
269 break;
270 }
271
272 if (!cmd.pdu_len)
273 break;
274
275 /* There's payload, get it */
276 pdu = (void *) cmdret->payload + pdu_offset;
277 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
278 if (ret)
279 break;
280
281 /* Verify payload crc */
282 crc = fio_crc16(pdu, cmd.pdu_len);
283 if (crc != cmd.pdu_crc16) {
284 log_err("fio: server bad crc on payload ");
285 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
286 ret = 1;
287 break;
288 }
289
290 pdu_offset += cmd.pdu_len;
291 if (!first)
292 cmdret->pdu_len += cmd.pdu_len;
293 first = 0;
294 } while (cmd.flags & FIO_NET_CMD_F_MORE);
295
296 if (ret) {
297 free(cmdret);
298 cmdret = NULL;
299 } else if (cmdret) {
300 /* zero-terminate text input */
301 if (cmdret->pdu_len) {
302 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
303 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
304 char *buf = (char *) __pdu->buf;
305
306 buf[__pdu->buf_len] = '\0';
307 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
308 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
309 char *buf = (char *) __pdu->buf;
310 int len = le32_to_cpu(__pdu->buf_len);
311
312 buf[len] = '\0';
313 }
314 }
315
316 /* frag flag is internal */
317 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
318 }
319
320 return cmdret;
321}
322
323static void add_reply(uint64_t tag, struct flist_head *list)
324{
325 struct fio_net_cmd_reply *reply;
326
327 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
328 flist_add_tail(&reply->list, list);
329}
330
331static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
332{
333 struct fio_net_cmd_reply *reply;
334
335 reply = calloc(1, sizeof(*reply));
336 INIT_FLIST_HEAD(&reply->list);
337 fio_gettime(&reply->tv, NULL);
338 reply->saved_tag = tag;
339 reply->opcode = opcode;
340
341 return (uintptr_t) reply;
342}
343
344static void free_reply(uint64_t tag)
345{
346 struct fio_net_cmd_reply *reply;
347
348 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
349 free(reply);
350}
351
352void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
353{
354 uint32_t pdu_len;
355
356 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
357
358 pdu_len = le32_to_cpu(cmd->pdu_len);
359 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
360}
361
362void fio_net_cmd_crc(struct fio_net_cmd *cmd)
363{
364 fio_net_cmd_crc_pdu(cmd, cmd->payload);
365}
366
367int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
368 uint64_t *tagptr, struct flist_head *list)
369{
370 struct fio_net_cmd *cmd = NULL;
371 size_t this_len, cur_len = 0;
372 uint64_t tag;
373 int ret;
374
375 if (list) {
376 assert(tagptr);
377 tag = *tagptr = alloc_reply(*tagptr, opcode);
378 } else
379 tag = tagptr ? *tagptr : 0;
380
381 do {
382 this_len = size;
383 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
384 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
385
386 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
387 if (cmd)
388 free(cmd);
389
390 cur_len = sizeof(*cmd) + this_len;
391 cmd = malloc(cur_len);
392 }
393
394 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
395
396 if (this_len < size)
397 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
398
399 fio_net_cmd_crc(cmd);
400
401 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
402 size -= this_len;
403 buf += this_len;
404 } while (!ret && size);
405
406 if (list) {
407 if (ret)
408 free_reply(tag);
409 else
410 add_reply(tag, list);
411 }
412
413 if (cmd)
414 free(cmd);
415
416 return ret;
417}
418
419static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
420{
421 struct fio_net_cmd cmd;
422
423 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
424 fio_net_cmd_crc(&cmd);
425
426 return fio_send_data(sk, &cmd, sizeof(cmd));
427}
428
429/*
430 * If 'list' is non-NULL, then allocate and store the sent command for
431 * later verification.
432 */
433int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
434 struct flist_head *list)
435{
436 int ret;
437
438 if (list)
439 tag = alloc_reply(tag, opcode);
440
441 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
442 if (ret) {
443 if (list)
444 free_reply(tag);
445
446 return ret;
447 }
448
449 if (list)
450 add_reply(tag, list);
451
452 return 0;
453}
454
455int fio_net_send_quit(int sk)
456{
457 dprint(FD_NET, "server: sending quit\n");
458
459 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
460}
461
462static int fio_net_send_ack(int sk, struct fio_net_cmd *cmd, int error,
463 int signal)
464{
465 struct cmd_end_pdu epdu;
466 uint64_t tag = 0;
467
468 if (cmd)
469 tag = cmd->tag;
470
471 epdu.error = __cpu_to_le32(error);
472 epdu.signal = __cpu_to_le32(signal);
473 return fio_net_send_cmd(sk, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, NULL);
474}
475
476int fio_net_send_stop(int sk, int error, int signal)
477{
478 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
479 return fio_net_send_ack(sk, NULL, error, signal);
480}
481
482static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
483{
484 struct fio_fork_item *ffi;
485
486 ffi = malloc(sizeof(*ffi));
487 ffi->exitval = 0;
488 ffi->signal = 0;
489 ffi->exited = 0;
490 ffi->pid = pid;
491 flist_add_tail(&ffi->list, list);
492}
493
494static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
495{
496 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
497 fio_server_add_fork_item(pid, conn_list);
498}
499
500static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
501{
502 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
503 fio_server_add_fork_item(pid, job_list);
504}
505
506static void fio_server_check_fork_item(struct fio_fork_item *ffi)
507{
508 int ret, status;
509
510 ret = waitpid(ffi->pid, &status, WNOHANG);
511 if (ret < 0) {
512 if (errno == ECHILD) {
513 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
514 ffi->exited = 1;
515 } else
516 log_err("fio: waitpid: %s\n", strerror(errno));
517 } else if (ret == ffi->pid) {
518 if (WIFSIGNALED(status)) {
519 ffi->signal = WTERMSIG(status);
520 ffi->exited = 1;
521 }
522 if (WIFEXITED(status)) {
523 if (WEXITSTATUS(status))
524 ffi->exitval = WEXITSTATUS(status);
525 ffi->exited = 1;
526 }
527 }
528}
529
530static void fio_server_fork_item_done(struct fio_fork_item *ffi)
531{
532 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
533
534 /*
535 * Fold STOP and QUIT...
536 */
537 fio_net_send_stop(server_fd, ffi->exitval, ffi->signal);
538 fio_net_send_quit(server_fd);
539 flist_del(&ffi->list);
540 free(ffi);
541}
542
543static void fio_server_check_fork_items(struct flist_head *list)
544{
545 struct flist_head *entry, *tmp;
546 struct fio_fork_item *ffi;
547
548 flist_for_each_safe(entry, tmp, list) {
549 ffi = flist_entry(entry, struct fio_fork_item, list);
550
551 fio_server_check_fork_item(ffi);
552
553 if (ffi->exited)
554 fio_server_fork_item_done(ffi);
555 }
556}
557
558static void fio_server_check_jobs(struct flist_head *job_list)
559{
560 fio_server_check_fork_items(job_list);
561}
562
563static void fio_server_check_conns(struct flist_head *conn_list)
564{
565 fio_server_check_fork_items(conn_list);
566}
567
568static int handle_load_file_cmd(struct fio_net_cmd *cmd)
569{
570 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
571 void *file_name = pdu->file;
572 struct cmd_start_pdu spdu;
573
574 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
575
576 pdu->name_len = le16_to_cpu(pdu->name_len);
577 pdu->client_type = le16_to_cpu(pdu->client_type);
578
579 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
580 fio_net_send_quit(server_fd);
581 return -1;
582 }
583
584 spdu.jobs = cpu_to_le32(thread_number);
585 spdu.stat_outputs = cpu_to_le32(stat_number);
586 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
587 return 0;
588}
589
590static int handle_run_cmd(struct flist_head *job_list, struct fio_net_cmd *cmd)
591{
592 pid_t pid;
593 int ret;
594
595 fio_time_init();
596 set_genesis_time();
597
598 pid = fork();
599 if (pid) {
600 fio_server_add_job_pid(job_list, pid);
601 return 0;
602 }
603
604 ret = fio_backend();
605 free_threads_shm();
606 _exit(ret);
607}
608
609static int handle_job_cmd(struct fio_net_cmd *cmd)
610{
611 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
612 void *buf = pdu->buf;
613 struct cmd_start_pdu spdu;
614
615 pdu->buf_len = le32_to_cpu(pdu->buf_len);
616 pdu->client_type = le32_to_cpu(pdu->client_type);
617
618 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
619 fio_net_send_quit(server_fd);
620 return -1;
621 }
622
623 spdu.jobs = cpu_to_le32(thread_number);
624 spdu.stat_outputs = cpu_to_le32(stat_number);
625 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
626 return 0;
627}
628
629static int handle_jobline_cmd(struct fio_net_cmd *cmd)
630{
631 void *pdu = cmd->payload;
632 struct cmd_single_line_pdu *cslp;
633 struct cmd_line_pdu *clp;
634 unsigned long offset;
635 struct cmd_start_pdu spdu;
636 char **argv;
637 int i;
638
639 clp = pdu;
640 clp->lines = le16_to_cpu(clp->lines);
641 clp->client_type = le16_to_cpu(clp->client_type);
642 argv = malloc(clp->lines * sizeof(char *));
643 offset = sizeof(*clp);
644
645 dprint(FD_NET, "server: %d command line args\n", clp->lines);
646
647 for (i = 0; i < clp->lines; i++) {
648 cslp = pdu + offset;
649 argv[i] = (char *) cslp->text;
650
651 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
652 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
653 }
654
655 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
656 fio_net_send_quit(server_fd);
657 free(argv);
658 return -1;
659 }
660
661 free(argv);
662
663 spdu.jobs = cpu_to_le32(thread_number);
664 spdu.stat_outputs = cpu_to_le32(stat_number);
665 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
666 return 0;
667}
668
669static int handle_probe_cmd(struct fio_net_cmd *cmd)
670{
671 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
672 struct cmd_probe_reply_pdu probe;
673 uint64_t tag = cmd->tag;
674
675 dprint(FD_NET, "server: sending probe reply\n");
676
677 strcpy(me, (char *) pdu->server);
678
679 memset(&probe, 0, sizeof(probe));
680 gethostname((char *) probe.hostname, sizeof(probe.hostname));
681#ifdef CONFIG_BIG_ENDIAN
682 probe.bigendian = 1;
683#endif
684 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
685
686 probe.os = FIO_OS;
687 probe.arch = FIO_ARCH;
688 probe.bpp = sizeof(void *);
689 probe.cpus = __cpu_to_le32(cpus_online());
690
691 /*
692 * If the client supports compression and we do too, then enable it
693 */
694 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
695 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
696 use_zlib = 1;
697 } else {
698 probe.flags = 0;
699 use_zlib = 0;
700 }
701
702 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL);
703}
704
705static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
706{
707 struct jobs_eta *je;
708 uint64_t tag = cmd->tag;
709 size_t size;
710 int i;
711
712 dprint(FD_NET, "server sending status\n");
713
714 /*
715 * Fake ETA return if we don't have a local one, otherwise the client
716 * will end up timing out waiting for a response to the ETA request
717 */
718 je = get_jobs_eta(1, &size);
719 if (!je)
720 je = calloc(1, sizeof(*je));
721 else {
722 je->nr_running = cpu_to_le32(je->nr_running);
723 je->nr_ramp = cpu_to_le32(je->nr_ramp);
724 je->nr_pending = cpu_to_le32(je->nr_pending);
725 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
726 je->files_open = cpu_to_le32(je->files_open);
727
728 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
729 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
730 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
731 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
732 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
733 je->rate[i] = cpu_to_le32(je->rate[i]);
734 je->iops[i] = cpu_to_le32(je->iops[i]);
735 }
736
737 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
738 je->eta_sec = cpu_to_le64(je->eta_sec);
739 je->nr_threads = cpu_to_le32(je->nr_threads);
740 je->is_pow2 = cpu_to_le32(je->is_pow2);
741 je->unit_base = cpu_to_le32(je->unit_base);
742 }
743
744 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, &tag, NULL);
745 free(je);
746 return 0;
747}
748
749static int send_update_job_reply(int fd, uint64_t __tag, int error)
750{
751 uint64_t tag = __tag;
752 uint32_t pdu_error;
753
754 pdu_error = __cpu_to_le32(error);
755 return fio_net_send_cmd(fd, FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, NULL);
756}
757
758static int handle_update_job_cmd(struct fio_net_cmd *cmd)
759{
760 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
761 struct thread_data *td;
762 uint32_t tnumber;
763
764 tnumber = le32_to_cpu(pdu->thread_number);
765
766 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
767
768 if (!tnumber || tnumber > thread_number) {
769 send_update_job_reply(server_fd, cmd->tag, ENODEV);
770 return 0;
771 }
772
773 td = &threads[tnumber - 1];
774 convert_thread_options_to_cpu(&td->o, &pdu->top);
775 send_update_job_reply(server_fd, cmd->tag, 0);
776 return 0;
777}
778
779static int handle_trigger_cmd(struct fio_net_cmd *cmd)
780{
781 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
782 char *buf = (char *) pdu->cmd;
783 struct all_io_list *rep;
784 size_t sz;
785
786 pdu->len = le16_to_cpu(pdu->len);
787 buf[pdu->len] = '\0';
788
789 rep = get_all_io_list(IO_LIST_ALL, &sz);
790 if (!rep) {
791 struct all_io_list state;
792
793 state.threads = cpu_to_le64((uint64_t) 0);
794 fio_net_send_cmd(server_fd, FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, NULL);
795 } else {
796 fio_net_send_cmd(server_fd, FIO_NET_CMD_VTRIGGER, rep, sz, NULL, NULL);
797 free(rep);
798 }
799
800 exec_trigger(buf);
801 return 0;
802}
803
804static int handle_command(struct flist_head *job_list, struct fio_net_cmd *cmd)
805{
806 int ret;
807
808 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
809 fio_server_op(cmd->opcode), cmd->pdu_len,
810 (unsigned long long) cmd->tag);
811
812 switch (cmd->opcode) {
813 case FIO_NET_CMD_QUIT:
814 fio_terminate_threads(TERMINATE_ALL);
815 return -1;
816 case FIO_NET_CMD_EXIT:
817 exit_backend = 1;
818 return -1;
819 case FIO_NET_CMD_LOAD_FILE:
820 ret = handle_load_file_cmd(cmd);
821 break;
822 case FIO_NET_CMD_JOB:
823 ret = handle_job_cmd(cmd);
824 break;
825 case FIO_NET_CMD_JOBLINE:
826 ret = handle_jobline_cmd(cmd);
827 break;
828 case FIO_NET_CMD_PROBE:
829 ret = handle_probe_cmd(cmd);
830 break;
831 case FIO_NET_CMD_SEND_ETA:
832 ret = handle_send_eta_cmd(cmd);
833 break;
834 case FIO_NET_CMD_RUN:
835 ret = handle_run_cmd(job_list, cmd);
836 break;
837 case FIO_NET_CMD_UPDATE_JOB:
838 ret = handle_update_job_cmd(cmd);
839 break;
840 case FIO_NET_CMD_VTRIGGER:
841 ret = handle_trigger_cmd(cmd);
842 break;
843 case FIO_NET_CMD_SENDFILE: {
844 struct cmd_sendfile_reply *in;
845 struct cmd_reply *rep;
846
847 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
848
849 in = (struct cmd_sendfile_reply *) cmd->payload;
850 in->size = le32_to_cpu(in->size);
851 in->error = le32_to_cpu(in->error);
852 if (in->error) {
853 ret = 1;
854 rep->error = in->error;
855 } else {
856 ret = 0;
857 rep->data = smalloc(in->size);
858 if (!rep->data) {
859 ret = 1;
860 rep->error = ENOMEM;
861 } else {
862 rep->size = in->size;
863 memcpy(rep->data, in->data, in->size);
864 }
865 }
866 fio_mutex_up(&rep->lock);
867 break;
868 }
869 default:
870 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
871 ret = 1;
872 }
873
874 return ret;
875}
876
877static int handle_connection(int sk)
878{
879 struct fio_net_cmd *cmd = NULL;
880 FLIST_HEAD(job_list);
881 int ret = 0;
882
883 reset_fio_state();
884 server_fd = sk;
885
886 /* read forever */
887 while (!exit_backend) {
888 struct pollfd pfd = {
889 .fd = sk,
890 .events = POLLIN,
891 };
892
893 ret = 0;
894 do {
895 int timeout = 1000;
896
897 if (!flist_empty(&job_list))
898 timeout = 100;
899
900 ret = poll(&pfd, 1, timeout);
901 if (ret < 0) {
902 if (errno == EINTR)
903 break;
904 log_err("fio: poll: %s\n", strerror(errno));
905 break;
906 } else if (!ret) {
907 fio_server_check_jobs(&job_list);
908 continue;
909 }
910
911 if (pfd.revents & POLLIN)
912 break;
913 if (pfd.revents & (POLLERR|POLLHUP)) {
914 ret = 1;
915 break;
916 }
917 } while (!exit_backend);
918
919 fio_server_check_jobs(&job_list);
920
921 if (ret < 0)
922 break;
923
924 cmd = fio_net_recv_cmd(sk);
925 if (!cmd) {
926 ret = -1;
927 break;
928 }
929
930 ret = handle_command(&job_list, cmd);
931 if (ret)
932 break;
933
934 free(cmd);
935 cmd = NULL;
936 }
937
938 if (cmd)
939 free(cmd);
940
941 close(sk);
942 _exit(ret);
943}
944
945/* get the address on this host bound by the input socket,
946 * whether it is ipv6 or ipv4 */
947
948int get_my_addr_str( int sk )
949{
950 int ret;
951 struct sockaddr * sockaddr_p;
952 struct sockaddr_in myaddr4 = {0};
953 struct sockaddr_in6 myaddr6 = {0};
954 char * net_addr;
955 socklen_t len = use_ipv6 ? sizeof(myaddr6) : sizeof(myaddr4);
956
957 if (use_ipv6)
958 sockaddr_p = (struct sockaddr * )&myaddr6;
959 else
960 sockaddr_p = (struct sockaddr * )&myaddr4;
961 ret = getsockname(sk, sockaddr_p, &len);
962 if (ret) {
963 log_err("fio: getsockaddr: %s\n", strerror(errno));
964 return -1;
965 }
966 if (use_ipv6)
967 net_addr = (char * )&myaddr6.sin6_addr;
968 else
969 net_addr = (char * )&myaddr4.sin_addr;
970 if (NULL == inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN-1)) {
971 log_err("inet_ntop: failed to convert addr to string\n");
972 return -1;
973 }
974 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
975 return 0;
976}
977
978static int accept_loop(int listen_sk)
979{
980 struct sockaddr_in addr;
981 struct sockaddr_in6 addr6;
982 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
983 struct pollfd pfd;
984 int ret = 0, sk, exitval = 0;
985 FLIST_HEAD(conn_list);
986
987 dprint(FD_NET, "server enter accept loop\n");
988
989 fio_set_fd_nonblocking(listen_sk, "server");
990
991 while (!exit_backend) {
992 const char *from;
993 char buf[64];
994 pid_t pid;
995
996 pfd.fd = listen_sk;
997 pfd.events = POLLIN;
998 do {
999 int timeout = 1000;
1000
1001 if (!flist_empty(&conn_list))
1002 timeout = 100;
1003
1004 ret = poll(&pfd, 1, timeout);
1005 if (ret < 0) {
1006 if (errno == EINTR)
1007 break;
1008 log_err("fio: poll: %s\n", strerror(errno));
1009 break;
1010 } else if (!ret) {
1011 fio_server_check_conns(&conn_list);
1012 continue;
1013 }
1014
1015 if (pfd.revents & POLLIN)
1016 break;
1017 } while (!exit_backend);
1018
1019 fio_server_check_conns(&conn_list);
1020
1021 if (exit_backend || ret < 0)
1022 break;
1023
1024 if (use_ipv6)
1025 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1026 else
1027 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1028
1029 if (sk < 0) {
1030 log_err("fio: accept: %s\n", strerror(errno));
1031 return -1;
1032 }
1033
1034 if (use_ipv6)
1035 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1036 else
1037 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1038
1039 dprint(FD_NET, "server: connect from %s\n", from);
1040
1041 pid = fork();
1042 if (pid) {
1043 close(sk);
1044 fio_server_add_conn_pid(&conn_list, pid);
1045 continue;
1046 }
1047
1048 /* exits */
1049 get_my_addr_str(sk); /* if error, it's already logged, non-fatal */
1050 handle_connection(sk);
1051 }
1052
1053 return exitval;
1054}
1055
1056int fio_server_text_output(int level, const char *buf, size_t len)
1057{
1058 struct cmd_text_pdu *pdu;
1059 unsigned int tlen;
1060 struct timeval tv;
1061
1062 if (server_fd == -1)
1063 return log_local_buf(buf, len);
1064
1065 tlen = sizeof(*pdu) + len;
1066 pdu = malloc(tlen);
1067
1068 pdu->level = __cpu_to_le32(level);
1069 pdu->buf_len = __cpu_to_le32(len);
1070
1071 gettimeofday(&tv, NULL);
1072 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1073 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1074
1075 memcpy(pdu->buf, buf, len);
1076
1077 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, NULL, NULL);
1078 free(pdu);
1079 return len;
1080}
1081
1082static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1083{
1084 dst->max_val = cpu_to_le64(src->max_val);
1085 dst->min_val = cpu_to_le64(src->min_val);
1086 dst->samples = cpu_to_le64(src->samples);
1087
1088 /*
1089 * Encode to IEEE 754 for network transfer
1090 */
1091 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1092 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1093}
1094
1095static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1096{
1097 int i;
1098
1099 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1100 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1101 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1102 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1103 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1104 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
1105 dst->agg[i] = cpu_to_le64(src->agg[i]);
1106 }
1107
1108 dst->kb_base = cpu_to_le32(src->kb_base);
1109 dst->unit_base = cpu_to_le32(src->unit_base);
1110 dst->groupid = cpu_to_le32(src->groupid);
1111 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1112}
1113
1114/*
1115 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1116 * into a single payload.
1117 */
1118void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1119{
1120 struct cmd_ts_pdu p;
1121 int i, j;
1122
1123 dprint(FD_NET, "server sending end stats\n");
1124
1125 memset(&p, 0, sizeof(p));
1126
1127 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1128 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1129 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1130
1131 p.ts.error = cpu_to_le32(ts->error);
1132 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1133 p.ts.groupid = cpu_to_le32(ts->groupid);
1134 p.ts.pid = cpu_to_le32(ts->pid);
1135 p.ts.members = cpu_to_le32(ts->members);
1136 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1137
1138 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1139 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1140 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1141 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1142 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1143 }
1144
1145 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1146 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1147 p.ts.ctx = cpu_to_le64(ts->ctx);
1148 p.ts.minf = cpu_to_le64(ts->minf);
1149 p.ts.majf = cpu_to_le64(ts->majf);
1150 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1151 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1152
1153 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1154 fio_fp64_t *src = &ts->percentile_list[i];
1155 fio_fp64_t *dst = &p.ts.percentile_list[i];
1156
1157 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1158 }
1159
1160 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1161 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1162 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1163 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1164 }
1165
1166 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1167 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1168 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1169 }
1170
1171 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1172 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1173 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1174
1175 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1176 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1177 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1178 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1179 }
1180
1181 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1182 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1183
1184 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1185 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1186 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1187 }
1188
1189 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1190 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1191 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1192 p.ts.first_error = cpu_to_le32(ts->first_error);
1193 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1194 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1195
1196 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1197 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1198 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1199 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1200
1201 p.ts.nr_block_infos = le64_to_cpu(ts->nr_block_infos);
1202 for (i = 0; i < p.ts.nr_block_infos; i++)
1203 p.ts.block_infos[i] = le32_to_cpu(ts->block_infos[i]);
1204
1205 convert_gs(&p.rs, rs);
1206
1207 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), NULL, NULL);
1208}
1209
1210void fio_server_send_gs(struct group_run_stats *rs)
1211{
1212 struct group_run_stats gs;
1213
1214 dprint(FD_NET, "server sending group run stats\n");
1215
1216 convert_gs(&gs, rs);
1217 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, NULL);
1218}
1219
1220static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1221{
1222 int i;
1223
1224 for (i = 0; i < 2; i++) {
1225 dst->ios[i] = cpu_to_le64(src->ios[i]);
1226 dst->merges[i] = cpu_to_le64(src->merges[i]);
1227 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1228 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1229 }
1230
1231 dst->io_ticks = cpu_to_le64(src->io_ticks);
1232 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1233 dst->slavecount = cpu_to_le32(src->slavecount);
1234 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1235}
1236
1237static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1238{
1239 int i;
1240
1241 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1242 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1243
1244 for (i = 0; i < 2; i++) {
1245 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1246 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1247 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1248 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1249 }
1250
1251 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1252 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1253 dst->s.msec = cpu_to_le64(src->s.msec);
1254}
1255
1256void fio_server_send_du(void)
1257{
1258 struct disk_util *du;
1259 struct flist_head *entry;
1260 struct cmd_du_pdu pdu;
1261
1262 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1263
1264 memset(&pdu, 0, sizeof(pdu));
1265
1266 flist_for_each(entry, &disk_list) {
1267 du = flist_entry(entry, struct disk_util, list);
1268
1269 convert_dus(&pdu.dus, &du->dus);
1270 convert_agg(&pdu.agg, &du->agg);
1271
1272 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, NULL);
1273 }
1274}
1275
1276/*
1277 * Send a command with a separate PDU, not inlined in the command
1278 */
1279static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1280 off_t size, uint64_t tag, uint32_t flags)
1281{
1282 struct fio_net_cmd cmd;
1283 struct iovec iov[2];
1284
1285 iov[0].iov_base = (void *) &cmd;
1286 iov[0].iov_len = sizeof(cmd);
1287 iov[1].iov_base = (void *) buf;
1288 iov[1].iov_len = size;
1289
1290 __fio_init_net_cmd(&cmd, opcode, size, tag);
1291 cmd.flags = __cpu_to_le32(flags);
1292 fio_net_cmd_crc_pdu(&cmd, buf);
1293
1294 return fio_sendv_data(sk, iov, 2);
1295}
1296
1297static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log)
1298{
1299 int ret = 0;
1300#ifdef CONFIG_ZLIB
1301 z_stream stream;
1302 void *out_pdu;
1303
1304 /*
1305 * Dirty - since the log is potentially huge, compress it into
1306 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1307 * side defragment it.
1308 */
1309 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1310
1311 stream.zalloc = Z_NULL;
1312 stream.zfree = Z_NULL;
1313 stream.opaque = Z_NULL;
1314
1315 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1316 ret = 1;
1317 goto err;
1318 }
1319
1320 stream.next_in = (void *) log->log;
1321 stream.avail_in = log->nr_samples * log_entry_sz(log);
1322
1323 do {
1324 unsigned int this_len, flags = 0;
1325
1326 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1327 stream.next_out = out_pdu;
1328 ret = deflate(&stream, Z_FINISH);
1329 /* may be Z_OK, or Z_STREAM_END */
1330 if (ret < 0)
1331 goto err_zlib;
1332
1333 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1334
1335 if (stream.avail_in)
1336 flags = FIO_NET_CMD_F_MORE;
1337
1338 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
1339 out_pdu, this_len, 0, flags);
1340 if (ret)
1341 goto err_zlib;
1342 } while (stream.avail_in);
1343
1344err_zlib:
1345 deflateEnd(&stream);
1346err:
1347 free(out_pdu);
1348#endif
1349 return ret;
1350}
1351
1352int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1353{
1354 struct cmd_iolog_pdu pdu;
1355 int i, ret = 0;
1356
1357 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1358 pdu.thread_number = cpu_to_le32(td->thread_number);
1359 pdu.log_type = cpu_to_le32(log->log_type);
1360 pdu.compressed = cpu_to_le32(use_zlib);
1361
1362 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1363 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1364
1365 for (i = 0; i < log->nr_samples; i++) {
1366 struct io_sample *s = get_sample(log, i);
1367
1368 s->time = cpu_to_le64(s->time);
1369 s->val = cpu_to_le64(s->val);
1370 s->__ddir = cpu_to_le32(s->__ddir);
1371 s->bs = cpu_to_le32(s->bs);
1372
1373 if (log->log_offset) {
1374 struct io_sample_offset *so = (void *) s;
1375
1376 so->offset = cpu_to_le64(so->offset);
1377 }
1378 }
1379
1380 /*
1381 * Send header first, it's not compressed.
1382 */
1383 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
1384 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
1385 if (ret)
1386 return ret;
1387
1388 /*
1389 * Now send actual log, compress if we can, otherwise just plain
1390 */
1391 if (use_zlib)
1392 return fio_send_iolog_gz(&pdu, log);
1393
1394 return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log,
1395 log->nr_samples * log_entry_sz(log), 0, 0);
1396}
1397
1398void fio_server_send_add_job(struct thread_data *td)
1399{
1400 struct cmd_add_job_pdu pdu;
1401
1402 memset(&pdu, 0, sizeof(pdu));
1403 pdu.thread_number = cpu_to_le32(td->thread_number);
1404 pdu.groupid = cpu_to_le32(td->groupid);
1405 convert_thread_options_to_net(&pdu.top, &td->o);
1406
1407 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, NULL);
1408}
1409
1410void fio_server_send_start(struct thread_data *td)
1411{
1412 assert(server_fd != -1);
1413
1414 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
1415}
1416
1417int fio_server_get_verify_state(const char *name, int threadnumber,
1418 void **datap, int *version)
1419{
1420 struct thread_io_list *s;
1421 struct cmd_sendfile out;
1422 struct cmd_reply *rep;
1423 uint64_t tag;
1424 void *data;
1425
1426 dprint(FD_NET, "server: request verify state\n");
1427
1428 rep = smalloc(sizeof(*rep));
1429 if (!rep) {
1430 log_err("fio: smalloc pool too small\n");
1431 return 1;
1432 }
1433
1434 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1435 rep->data = NULL;
1436 rep->error = 0;
1437
1438 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1439 threadnumber);
1440 tag = (uint64_t) (uintptr_t) rep;
1441 fio_net_send_cmd(server_fd, FIO_NET_CMD_SENDFILE, &out, sizeof(out),
1442 &tag, NULL);
1443
1444 /*
1445 * Wait for the backend to receive the reply
1446 */
1447 if (fio_mutex_down_timeout(&rep->lock, 10)) {
1448 log_err("fio: timed out waiting for reply\n");
1449 goto fail;
1450 }
1451
1452 if (rep->error) {
1453 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error));
1454fail:
1455 *datap = NULL;
1456 sfree(rep);
1457 fio_net_send_quit(server_fd);
1458 return 1;
1459 }
1460
1461 /*
1462 * The format is verify_state_hdr, then thread_io_list. Verify
1463 * the header, and the thread_io_list checksum
1464 */
1465 s = rep->data + sizeof(struct verify_state_hdr);
1466 if (verify_state_hdr(rep->data, s, version))
1467 goto fail;
1468
1469 /*
1470 * Don't need the header from now, copy just the thread_io_list
1471 */
1472 rep->size -= sizeof(struct verify_state_hdr);
1473 data = malloc(rep->size);
1474 memcpy(data, s, rep->size);
1475 *datap = data;
1476
1477 sfree(rep->data);
1478 __fio_mutex_remove(&rep->lock);
1479 sfree(rep);
1480 return 0;
1481}
1482
1483static int fio_init_server_ip(void)
1484{
1485 struct sockaddr *addr;
1486 socklen_t socklen;
1487 char buf[80];
1488 const char *str;
1489 int sk, opt;
1490
1491 if (use_ipv6)
1492 sk = socket(AF_INET6, SOCK_STREAM, 0);
1493 else
1494 sk = socket(AF_INET, SOCK_STREAM, 0);
1495
1496 if (sk < 0) {
1497 log_err("fio: socket: %s\n", strerror(errno));
1498 return -1;
1499 }
1500
1501 opt = 1;
1502 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1503 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1504 close(sk);
1505 return -1;
1506 }
1507#ifdef SO_REUSEPORT
1508 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1509 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1510 close(sk);
1511 return -1;
1512 }
1513#endif
1514
1515 if (use_ipv6) {
1516 const void *src = &saddr_in6.sin6_addr;
1517
1518 addr = (struct sockaddr *) &saddr_in6;
1519 socklen = sizeof(saddr_in6);
1520 saddr_in6.sin6_family = AF_INET6;
1521 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1522 } else {
1523 const void *src = &saddr_in.sin_addr;
1524
1525 addr = (struct sockaddr *) &saddr_in;
1526 socklen = sizeof(saddr_in);
1527 saddr_in.sin_family = AF_INET;
1528 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1529 }
1530
1531 if (bind(sk, addr, socklen) < 0) {
1532 log_err("fio: bind: %s\n", strerror(errno));
1533 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1534 close(sk);
1535 return -1;
1536 }
1537
1538 return sk;
1539}
1540
1541static int fio_init_server_sock(void)
1542{
1543 struct sockaddr_un addr;
1544 socklen_t len;
1545 mode_t mode;
1546 int sk;
1547
1548 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1549 if (sk < 0) {
1550 log_err("fio: socket: %s\n", strerror(errno));
1551 return -1;
1552 }
1553
1554 mode = umask(000);
1555
1556 memset(&addr, 0, sizeof(addr));
1557 addr.sun_family = AF_UNIX;
1558 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1559
1560 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1561
1562 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1563 log_err("fio: bind: %s\n", strerror(errno));
1564 close(sk);
1565 return -1;
1566 }
1567
1568 umask(mode);
1569 return sk;
1570}
1571
1572static int fio_init_server_connection(void)
1573{
1574 char bind_str[128];
1575 int sk;
1576
1577 dprint(FD_NET, "starting server\n");
1578
1579 if (!bind_sock)
1580 sk = fio_init_server_ip();
1581 else
1582 sk = fio_init_server_sock();
1583
1584 if (sk < 0)
1585 return sk;
1586
1587 memset(bind_str, 0, sizeof(bind_str));
1588
1589 if (!bind_sock) {
1590 char *p, port[16];
1591 const void *src;
1592 int af;
1593
1594 if (use_ipv6) {
1595 af = AF_INET6;
1596 src = &saddr_in6.sin6_addr;
1597 } else {
1598 af = AF_INET;
1599 src = &saddr_in.sin_addr;
1600 }
1601
1602 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1603
1604 sprintf(port, ",%u", fio_net_port);
1605 if (p)
1606 strcat(p, port);
1607 else
1608 strncpy(bind_str, port, sizeof(bind_str) - 1);
1609 } else
1610 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1611
1612 log_info("fio: server listening on %s\n", bind_str);
1613
1614 if (listen(sk, 0) < 0) {
1615 log_err("fio: listen: %s\n", strerror(errno));
1616 close(sk);
1617 return -1;
1618 }
1619
1620 return sk;
1621}
1622
1623int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1624 struct in6_addr *inp6)
1625
1626{
1627 int ret = 0;
1628
1629 if (ipv6)
1630 ret = inet_pton(AF_INET6, host, inp6);
1631 else
1632 ret = inet_pton(AF_INET, host, inp);
1633
1634 if (ret != 1) {
1635 struct addrinfo hints, *res;
1636
1637 memset(&hints, 0, sizeof(hints));
1638 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1639 hints.ai_socktype = SOCK_STREAM;
1640
1641 ret = getaddrinfo(host, NULL, &hints, &res);
1642 if (ret) {
1643 log_err("fio: failed to resolve <%s> (%s)\n", host,
1644 gai_strerror(ret));
1645 return 1;
1646 }
1647
1648 if (ipv6)
1649 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1650 else
1651 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1652
1653 ret = 1;
1654 freeaddrinfo(res);
1655 }
1656
1657 return !(ret == 1);
1658}
1659
1660/*
1661 * Parse a host/ip/port string. Reads from 'str'.
1662 *
1663 * Outputs:
1664 *
1665 * For IPv4:
1666 * *ptr is the host, *port is the port, inp is the destination.
1667 * For IPv6:
1668 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1669 * For local domain sockets:
1670 * *ptr is the filename, *is_sock is 1.
1671 */
1672int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1673 int *port, struct in_addr *inp,
1674 struct in6_addr *inp6, int *ipv6)
1675{
1676 const char *host = str;
1677 char *portp;
1678 int lport = 0;
1679
1680 *ptr = NULL;
1681 *is_sock = 0;
1682 *port = fio_net_port;
1683 *ipv6 = 0;
1684
1685 if (!strncmp(str, "sock:", 5)) {
1686 *ptr = strdup(str + 5);
1687 *is_sock = 1;
1688
1689 return 0;
1690 }
1691
1692 /*
1693 * Is it ip:<ip or host>:port
1694 */
1695 if (!strncmp(host, "ip:", 3))
1696 host += 3;
1697 else if (!strncmp(host, "ip4:", 4))
1698 host += 4;
1699 else if (!strncmp(host, "ip6:", 4)) {
1700 host += 4;
1701 *ipv6 = 1;
1702 } else if (host[0] == ':') {
1703 /* String is :port */
1704 host++;
1705 lport = atoi(host);
1706 if (!lport || lport > 65535) {
1707 log_err("fio: bad server port %u\n", lport);
1708 return 1;
1709 }
1710 /* no hostname given, we are done */
1711 *port = lport;
1712 return 0;
1713 }
1714
1715 /*
1716 * If no port seen yet, check if there's a last ',' at the end
1717 */
1718 if (!lport) {
1719 portp = strchr(host, ',');
1720 if (portp) {
1721 *portp = '\0';
1722 portp++;
1723 lport = atoi(portp);
1724 if (!lport || lport > 65535) {
1725 log_err("fio: bad server port %u\n", lport);
1726 return 1;
1727 }
1728 }
1729 }
1730
1731 if (lport)
1732 *port = lport;
1733
1734 if (!strlen(host))
1735 return 0;
1736
1737 *ptr = strdup(host);
1738
1739 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
1740 free(*ptr);
1741 *ptr = NULL;
1742 return 1;
1743 }
1744
1745 if (*port == 0)
1746 *port = fio_net_port;
1747
1748 return 0;
1749}
1750
1751/*
1752 * Server arg should be one of:
1753 *
1754 * sock:/path/to/socket
1755 * ip:1.2.3.4
1756 * 1.2.3.4
1757 *
1758 * Where sock uses unix domain sockets, and ip binds the server to
1759 * a specific interface. If no arguments are given to the server, it
1760 * uses IP and binds to 0.0.0.0.
1761 *
1762 */
1763static int fio_handle_server_arg(void)
1764{
1765 int port = fio_net_port;
1766 int is_sock, ret = 0;
1767
1768 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1769
1770 if (!fio_server_arg)
1771 goto out;
1772
1773 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1774 &port, &saddr_in.sin_addr,
1775 &saddr_in6.sin6_addr, &use_ipv6);
1776
1777 if (!is_sock && bind_sock) {
1778 free(bind_sock);
1779 bind_sock = NULL;
1780 }
1781
1782out:
1783 fio_net_port = port;
1784 saddr_in.sin_port = htons(port);
1785 saddr_in6.sin6_port = htons(port);
1786 return ret;
1787}
1788
1789static void sig_int(int sig)
1790{
1791 if (bind_sock)
1792 unlink(bind_sock);
1793}
1794
1795static void set_sig_handlers(void)
1796{
1797 struct sigaction act;
1798
1799 memset(&act, 0, sizeof(act));
1800 act.sa_handler = sig_int;
1801 act.sa_flags = SA_RESTART;
1802 sigaction(SIGINT, &act, NULL);
1803}
1804
1805static int fio_server(void)
1806{
1807 int sk, ret;
1808
1809 dprint(FD_NET, "starting server\n");
1810
1811 if (fio_handle_server_arg())
1812 return -1;
1813
1814 sk = fio_init_server_connection();
1815 if (sk < 0)
1816 return -1;
1817
1818 set_sig_handlers();
1819
1820 ret = accept_loop(sk);
1821
1822 close(sk);
1823
1824 if (fio_server_arg) {
1825 free(fio_server_arg);
1826 fio_server_arg = NULL;
1827 }
1828 if (bind_sock)
1829 free(bind_sock);
1830
1831 return ret;
1832}
1833
1834void fio_server_got_signal(int signal)
1835{
1836 if (signal == SIGPIPE)
1837 server_fd = -1;
1838 else {
1839 log_info("\nfio: terminating on signal %d\n", signal);
1840 exit_backend = 1;
1841 }
1842}
1843
1844static int check_existing_pidfile(const char *pidfile)
1845{
1846 struct stat sb;
1847 char buf[16];
1848 pid_t pid;
1849 FILE *f;
1850
1851 if (stat(pidfile, &sb))
1852 return 0;
1853
1854 f = fopen(pidfile, "r");
1855 if (!f)
1856 return 0;
1857
1858 if (fread(buf, sb.st_size, 1, f) <= 0) {
1859 fclose(f);
1860 return 1;
1861 }
1862 fclose(f);
1863
1864 pid = atoi(buf);
1865 if (kill(pid, SIGCONT) < 0)
1866 return errno != ESRCH;
1867
1868 return 1;
1869}
1870
1871static int write_pid(pid_t pid, const char *pidfile)
1872{
1873 FILE *fpid;
1874
1875 fpid = fopen(pidfile, "w");
1876 if (!fpid) {
1877 log_err("fio: failed opening pid file %s\n", pidfile);
1878 return 1;
1879 }
1880
1881 fprintf(fpid, "%u\n", (unsigned int) pid);
1882 fclose(fpid);
1883 return 0;
1884}
1885
1886/*
1887 * If pidfile is specified, background us.
1888 */
1889int fio_start_server(char *pidfile)
1890{
1891 pid_t pid;
1892 int ret;
1893
1894#if defined(WIN32)
1895 WSADATA wsd;
1896 WSAStartup(MAKEWORD(2, 2), &wsd);
1897#endif
1898
1899 if (!pidfile)
1900 return fio_server();
1901
1902 if (check_existing_pidfile(pidfile)) {
1903 log_err("fio: pidfile %s exists and server appears alive\n",
1904 pidfile);
1905 free(pidfile);
1906 return -1;
1907 }
1908
1909 pid = fork();
1910 if (pid < 0) {
1911 log_err("fio: failed server fork: %s", strerror(errno));
1912 free(pidfile);
1913 return -1;
1914 } else if (pid) {
1915 ret = write_pid(pid, pidfile);
1916 free(pidfile);
1917 _exit(ret);
1918 }
1919
1920 setsid();
1921 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1922 log_syslog = 1;
1923 close(STDIN_FILENO);
1924 close(STDOUT_FILENO);
1925 close(STDERR_FILENO);
1926 f_out = NULL;
1927 f_err = NULL;
1928
1929 ret = fio_server();
1930
1931 closelog();
1932 unlink(pidfile);
1933 free(pidfile);
1934 return ret;
1935}
1936
1937void fio_server_set_arg(const char *arg)
1938{
1939 fio_server_arg = strdup(arg);
1940}
fio - Flexible IO Tester