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