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Fix compile warning for !zlib
[fio.git] / server.c
... / ...
CommitLineData
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
35enum {
36 SK_F_FREE = 1,
37 SK_F_COPY = 2,
38 SK_F_SIMPLE = 4,
39 SK_F_VEC = 8,
40 SK_F_INLINE = 16,
41};
42
43struct sk_entry {
44 struct flist_head list; /* link on sk_out->list */
45 int flags; /* SK_F_* */
46 int opcode; /* Actual command fields */
47 void *buf;
48 off_t size;
49 uint64_t *tagptr;
50 struct flist_head next; /* Other sk_entry's, if linked command */
51};
52
53struct sk_out {
54 unsigned int refs; /* frees sk_out when it drops to zero.
55 * protected by below ->lock */
56
57 int sk; /* socket fd to talk to client */
58 struct fio_mutex lock; /* protects ref and below list */
59 struct flist_head list; /* list of pending transmit work */
60 struct fio_mutex wait; /* wake backend when items added to list */
61 struct fio_mutex xmit; /* held while sending data */
62};
63
64static char *fio_server_arg;
65static char *bind_sock;
66static struct sockaddr_in saddr_in;
67static struct sockaddr_in6 saddr_in6;
68static int use_ipv6;
69#ifdef CONFIG_ZLIB
70static unsigned int has_zlib = 1;
71#else
72static unsigned int has_zlib = 0;
73#endif
74static unsigned int use_zlib;
75static char me[128];
76
77static pthread_key_t sk_out_key;
78
79struct fio_fork_item {
80 struct flist_head list;
81 int exitval;
82 int signal;
83 int exited;
84 pid_t pid;
85};
86
87struct cmd_reply {
88 struct fio_mutex lock;
89 void *data;
90 size_t size;
91 int error;
92};
93
94static const char *fio_server_ops[FIO_NET_CMD_NR] = {
95 "",
96 "QUIT",
97 "EXIT",
98 "JOB",
99 "JOBLINE",
100 "TEXT",
101 "TS",
102 "GS",
103 "SEND_ETA",
104 "ETA",
105 "PROBE",
106 "START",
107 "STOP",
108 "DISK_UTIL",
109 "SERVER_START",
110 "ADD_JOB",
111 "RUN",
112 "IOLOG",
113 "UPDATE_JOB",
114 "LOAD_FILE",
115 "VTRIGGER",
116 "SENDFILE",
117};
118
119static void sk_lock(struct sk_out *sk_out)
120{
121 fio_mutex_down(&sk_out->lock);
122}
123
124static void sk_unlock(struct sk_out *sk_out)
125{
126 fio_mutex_up(&sk_out->lock);
127}
128
129void sk_out_assign(struct sk_out *sk_out)
130{
131 if (!sk_out)
132 return;
133
134 sk_lock(sk_out);
135 sk_out->refs++;
136 sk_unlock(sk_out);
137 pthread_setspecific(sk_out_key, sk_out);
138}
139
140static void sk_out_free(struct sk_out *sk_out)
141{
142 __fio_mutex_remove(&sk_out->lock);
143 __fio_mutex_remove(&sk_out->wait);
144 __fio_mutex_remove(&sk_out->xmit);
145 sfree(sk_out);
146}
147
148static int __sk_out_drop(struct sk_out *sk_out)
149{
150 if (sk_out) {
151 int refs;
152
153 sk_lock(sk_out);
154 refs = --sk_out->refs;
155 sk_unlock(sk_out);
156
157 if (!refs) {
158 sk_out_free(sk_out);
159 return 0;
160 }
161 }
162
163 return 1;
164}
165
166void sk_out_drop(void)
167{
168 struct sk_out *sk_out;
169
170 sk_out = pthread_getspecific(sk_out_key);
171 if (!__sk_out_drop(sk_out))
172 pthread_setspecific(sk_out_key, NULL);
173}
174
175static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
176 uint32_t pdu_len, uint64_t tag)
177{
178 memset(cmd, 0, sizeof(*cmd));
179
180 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
181 cmd->opcode = cpu_to_le16(opcode);
182 cmd->tag = cpu_to_le64(tag);
183 cmd->pdu_len = cpu_to_le32(pdu_len);
184}
185
186
187static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
188 const void *pdu, uint32_t pdu_len, uint64_t tag)
189{
190 __fio_init_net_cmd(cmd, opcode, pdu_len, tag);
191
192 if (pdu)
193 memcpy(&cmd->payload, pdu, pdu_len);
194}
195
196const char *fio_server_op(unsigned int op)
197{
198 static char buf[32];
199
200 if (op < FIO_NET_CMD_NR)
201 return fio_server_ops[op];
202
203 sprintf(buf, "UNKNOWN/%d", op);
204 return buf;
205}
206
207static ssize_t iov_total_len(const struct iovec *iov, int count)
208{
209 ssize_t ret = 0;
210
211 while (count--) {
212 ret += iov->iov_len;
213 iov++;
214 }
215
216 return ret;
217}
218
219static int fio_sendv_data(int sk, struct iovec *iov, int count)
220{
221 ssize_t total_len = iov_total_len(iov, count);
222 ssize_t ret;
223
224 do {
225 ret = writev(sk, iov, count);
226 if (ret > 0) {
227 total_len -= ret;
228 if (!total_len)
229 break;
230
231 while (ret) {
232 if (ret >= iov->iov_len) {
233 ret -= iov->iov_len;
234 iov++;
235 continue;
236 }
237 iov->iov_base += ret;
238 iov->iov_len -= ret;
239 ret = 0;
240 }
241 } else if (!ret)
242 break;
243 else if (errno == EAGAIN || errno == EINTR)
244 continue;
245 else
246 break;
247 } while (!exit_backend);
248
249 if (!total_len)
250 return 0;
251
252 return 1;
253}
254
255static int fio_send_data(int sk, const void *p, unsigned int len)
256{
257 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
258
259 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
260
261 return fio_sendv_data(sk, &iov, 1);
262}
263
264static int fio_recv_data(int sk, void *p, unsigned int len)
265{
266 do {
267 int ret = recv(sk, p, len, MSG_WAITALL);
268
269 if (ret > 0) {
270 len -= ret;
271 if (!len)
272 break;
273 p += ret;
274 continue;
275 } else if (!ret)
276 break;
277 else if (errno == EAGAIN || errno == EINTR)
278 continue;
279 else
280 break;
281 } while (!exit_backend);
282
283 if (!len)
284 return 0;
285
286 return -1;
287}
288
289static int verify_convert_cmd(struct fio_net_cmd *cmd)
290{
291 uint16_t crc;
292
293 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
294 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
295
296 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
297 if (crc != cmd->cmd_crc16) {
298 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
299 cmd->cmd_crc16, crc);
300 return 1;
301 }
302
303 cmd->version = le16_to_cpu(cmd->version);
304 cmd->opcode = le16_to_cpu(cmd->opcode);
305 cmd->flags = le32_to_cpu(cmd->flags);
306 cmd->tag = le64_to_cpu(cmd->tag);
307 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
308
309 switch (cmd->version) {
310 case FIO_SERVER_VER:
311 break;
312 default:
313 log_err("fio: bad server cmd version %d\n", cmd->version);
314 return 1;
315 }
316
317 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
318 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
319 return 1;
320 }
321
322 return 0;
323}
324
325/*
326 * Read (and defragment, if necessary) incoming commands
327 */
328struct fio_net_cmd *fio_net_recv_cmd(int sk)
329{
330 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
331 size_t cmd_size = 0, pdu_offset = 0;
332 uint16_t crc;
333 int ret, first = 1;
334 void *pdu = NULL;
335
336 do {
337 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
338 if (ret)
339 break;
340
341 /* We have a command, verify it and swap if need be */
342 ret = verify_convert_cmd(&cmd);
343 if (ret)
344 break;
345
346 if (first) {
347 /* if this is text, add room for \0 at the end */
348 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
349 assert(!cmdret);
350 } else
351 cmd_size += cmd.pdu_len;
352
353 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
354 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
355 ret = 1;
356 break;
357 }
358
359 tmp = realloc(cmdret, cmd_size);
360 if (!tmp) {
361 log_err("fio: server failed allocating cmd\n");
362 ret = 1;
363 break;
364 }
365 cmdret = tmp;
366
367 if (first)
368 memcpy(cmdret, &cmd, sizeof(cmd));
369 else if (cmdret->opcode != cmd.opcode) {
370 log_err("fio: fragment opcode mismatch (%d != %d)\n",
371 cmdret->opcode, cmd.opcode);
372 ret = 1;
373 break;
374 }
375
376 if (!cmd.pdu_len)
377 break;
378
379 /* There's payload, get it */
380 pdu = (void *) cmdret->payload + pdu_offset;
381 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
382 if (ret)
383 break;
384
385 /* Verify payload crc */
386 crc = fio_crc16(pdu, cmd.pdu_len);
387 if (crc != cmd.pdu_crc16) {
388 log_err("fio: server bad crc on payload ");
389 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
390 ret = 1;
391 break;
392 }
393
394 pdu_offset += cmd.pdu_len;
395 if (!first)
396 cmdret->pdu_len += cmd.pdu_len;
397 first = 0;
398 } while (cmd.flags & FIO_NET_CMD_F_MORE);
399
400 if (ret) {
401 free(cmdret);
402 cmdret = NULL;
403 } else if (cmdret) {
404 /* zero-terminate text input */
405 if (cmdret->pdu_len) {
406 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
407 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
408 char *buf = (char *) __pdu->buf;
409
410 buf[__pdu->buf_len] = '\0';
411 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
412 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
413 char *buf = (char *) __pdu->buf;
414 int len = le32_to_cpu(__pdu->buf_len);
415
416 buf[len] = '\0';
417 }
418 }
419
420 /* frag flag is internal */
421 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
422 }
423
424 return cmdret;
425}
426
427static void add_reply(uint64_t tag, struct flist_head *list)
428{
429 struct fio_net_cmd_reply *reply;
430
431 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
432 flist_add_tail(&reply->list, list);
433}
434
435static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
436{
437 struct fio_net_cmd_reply *reply;
438
439 reply = calloc(1, sizeof(*reply));
440 INIT_FLIST_HEAD(&reply->list);
441 fio_gettime(&reply->tv, NULL);
442 reply->saved_tag = tag;
443 reply->opcode = opcode;
444
445 return (uintptr_t) reply;
446}
447
448static void free_reply(uint64_t tag)
449{
450 struct fio_net_cmd_reply *reply;
451
452 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
453 free(reply);
454}
455
456static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
457{
458 uint32_t pdu_len;
459
460 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
461
462 pdu_len = le32_to_cpu(cmd->pdu_len);
463 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
464}
465
466static void fio_net_cmd_crc(struct fio_net_cmd *cmd)
467{
468 fio_net_cmd_crc_pdu(cmd, cmd->payload);
469}
470
471int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
472 uint64_t *tagptr, struct flist_head *list)
473{
474 struct fio_net_cmd *cmd = NULL;
475 size_t this_len, cur_len = 0;
476 uint64_t tag;
477 int ret;
478
479 if (list) {
480 assert(tagptr);
481 tag = *tagptr = alloc_reply(*tagptr, opcode);
482 } else
483 tag = tagptr ? *tagptr : 0;
484
485 do {
486 this_len = size;
487 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
488 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
489
490 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
491 if (cmd)
492 free(cmd);
493
494 cur_len = sizeof(*cmd) + this_len;
495 cmd = malloc(cur_len);
496 }
497
498 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
499
500 if (this_len < size)
501 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
502
503 fio_net_cmd_crc(cmd);
504
505 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
506 size -= this_len;
507 buf += this_len;
508 } while (!ret && size);
509
510 if (list) {
511 if (ret)
512 free_reply(tag);
513 else
514 add_reply(tag, list);
515 }
516
517 if (cmd)
518 free(cmd);
519
520 return ret;
521}
522
523static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf, off_t size,
524 uint64_t *tagptr, int flags)
525{
526 struct sk_entry *entry;
527
528 entry = smalloc(sizeof(*entry));
529 INIT_FLIST_HEAD(&entry->next);
530 entry->opcode = opcode;
531 if (flags & SK_F_COPY) {
532 entry->buf = smalloc(size);
533 memcpy(entry->buf, buf, size);
534 } else
535 entry->buf = buf;
536
537 entry->size = size;
538 entry->tagptr = tagptr;
539 entry->flags = flags;
540 return entry;
541}
542
543static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry);
544
545static void fio_net_queue_entry(struct sk_entry *entry)
546{
547 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
548
549 if (entry->flags & SK_F_INLINE)
550 handle_sk_entry(sk_out, entry);
551 else {
552 sk_lock(sk_out);
553 flist_add_tail(&entry->list, &sk_out->list);
554 sk_unlock(sk_out);
555
556 fio_mutex_up(&sk_out->wait);
557 }
558}
559
560static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
561 uint64_t *tagptr, int flags)
562{
563 struct sk_entry *entry;
564
565 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
566 fio_net_queue_entry(entry);
567 return 0;
568}
569
570static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
571{
572 struct fio_net_cmd cmd;
573
574 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
575 fio_net_cmd_crc(&cmd);
576
577 return fio_send_data(sk, &cmd, sizeof(cmd));
578}
579
580/*
581 * If 'list' is non-NULL, then allocate and store the sent command for
582 * later verification.
583 */
584int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
585 struct flist_head *list)
586{
587 int ret;
588
589 if (list)
590 tag = alloc_reply(tag, opcode);
591
592 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
593 if (ret) {
594 if (list)
595 free_reply(tag);
596
597 return ret;
598 }
599
600 if (list)
601 add_reply(tag, list);
602
603 return 0;
604}
605
606static int fio_net_queue_quit(void)
607{
608 dprint(FD_NET, "server: sending quit\n");
609
610 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, 0, SK_F_SIMPLE);
611}
612
613int fio_net_send_quit(int sk)
614{
615 dprint(FD_NET, "server: sending quit\n");
616
617 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
618}
619
620static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
621{
622 struct cmd_end_pdu epdu;
623 uint64_t tag = 0;
624
625 if (cmd)
626 tag = cmd->tag;
627
628 epdu.error = __cpu_to_le32(error);
629 epdu.signal = __cpu_to_le32(signal);
630 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
631}
632
633static int fio_net_queue_stop(int error, int signal)
634{
635 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
636 return fio_net_send_ack(NULL, error, signal);
637}
638
639static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
640{
641 struct fio_fork_item *ffi;
642
643 ffi = malloc(sizeof(*ffi));
644 ffi->exitval = 0;
645 ffi->signal = 0;
646 ffi->exited = 0;
647 ffi->pid = pid;
648 flist_add_tail(&ffi->list, list);
649}
650
651static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
652{
653 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
654 fio_server_add_fork_item(pid, conn_list);
655}
656
657static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
658{
659 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
660 fio_server_add_fork_item(pid, job_list);
661}
662
663static void fio_server_check_fork_item(struct fio_fork_item *ffi)
664{
665 int ret, status;
666
667 ret = waitpid(ffi->pid, &status, WNOHANG);
668 if (ret < 0) {
669 if (errno == ECHILD) {
670 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
671 ffi->exited = 1;
672 } else
673 log_err("fio: waitpid: %s\n", strerror(errno));
674 } else if (ret == ffi->pid) {
675 if (WIFSIGNALED(status)) {
676 ffi->signal = WTERMSIG(status);
677 ffi->exited = 1;
678 }
679 if (WIFEXITED(status)) {
680 if (WEXITSTATUS(status))
681 ffi->exitval = WEXITSTATUS(status);
682 ffi->exited = 1;
683 }
684 }
685}
686
687static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
688{
689 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
690
691 /*
692 * Fold STOP and QUIT...
693 */
694 if (stop) {
695 fio_net_queue_stop(ffi->exitval, ffi->signal);
696 fio_net_queue_quit();
697 }
698
699 flist_del(&ffi->list);
700 free(ffi);
701}
702
703static void fio_server_check_fork_items(struct flist_head *list, bool stop)
704{
705 struct flist_head *entry, *tmp;
706 struct fio_fork_item *ffi;
707
708 flist_for_each_safe(entry, tmp, list) {
709 ffi = flist_entry(entry, struct fio_fork_item, list);
710
711 fio_server_check_fork_item(ffi);
712
713 if (ffi->exited)
714 fio_server_fork_item_done(ffi, stop);
715 }
716}
717
718static void fio_server_check_jobs(struct flist_head *job_list)
719{
720 fio_server_check_fork_items(job_list, true);
721}
722
723static void fio_server_check_conns(struct flist_head *conn_list)
724{
725 fio_server_check_fork_items(conn_list, false);
726}
727
728static int handle_load_file_cmd(struct fio_net_cmd *cmd)
729{
730 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
731 void *file_name = pdu->file;
732 struct cmd_start_pdu spdu;
733
734 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
735
736 pdu->name_len = le16_to_cpu(pdu->name_len);
737 pdu->client_type = le16_to_cpu(pdu->client_type);
738
739 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
740 fio_net_queue_quit();
741 return -1;
742 }
743
744 spdu.jobs = cpu_to_le32(thread_number);
745 spdu.stat_outputs = cpu_to_le32(stat_number);
746 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
747 return 0;
748}
749
750static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
751 struct fio_net_cmd *cmd)
752{
753 pid_t pid;
754 int ret;
755
756 fio_time_init();
757 set_genesis_time();
758
759 pid = fork();
760 if (pid) {
761 fio_server_add_job_pid(job_list, pid);
762 return 0;
763 }
764
765 ret = fio_backend(sk_out);
766 free_threads_shm();
767 _exit(ret);
768}
769
770static int handle_job_cmd(struct fio_net_cmd *cmd)
771{
772 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
773 void *buf = pdu->buf;
774 struct cmd_start_pdu spdu;
775
776 pdu->buf_len = le32_to_cpu(pdu->buf_len);
777 pdu->client_type = le32_to_cpu(pdu->client_type);
778
779 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
780 fio_net_queue_quit();
781 return -1;
782 }
783
784 spdu.jobs = cpu_to_le32(thread_number);
785 spdu.stat_outputs = cpu_to_le32(stat_number);
786
787 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
788 return 0;
789}
790
791static int handle_jobline_cmd(struct fio_net_cmd *cmd)
792{
793 void *pdu = cmd->payload;
794 struct cmd_single_line_pdu *cslp;
795 struct cmd_line_pdu *clp;
796 unsigned long offset;
797 struct cmd_start_pdu spdu;
798 char **argv;
799 int i;
800
801 clp = pdu;
802 clp->lines = le16_to_cpu(clp->lines);
803 clp->client_type = le16_to_cpu(clp->client_type);
804 argv = malloc(clp->lines * sizeof(char *));
805 offset = sizeof(*clp);
806
807 dprint(FD_NET, "server: %d command line args\n", clp->lines);
808
809 for (i = 0; i < clp->lines; i++) {
810 cslp = pdu + offset;
811 argv[i] = (char *) cslp->text;
812
813 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
814 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
815 }
816
817 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
818 fio_net_queue_quit();
819 free(argv);
820 return -1;
821 }
822
823 free(argv);
824
825 spdu.jobs = cpu_to_le32(thread_number);
826 spdu.stat_outputs = cpu_to_le32(stat_number);
827
828 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
829 return 0;
830}
831
832static int handle_probe_cmd(struct fio_net_cmd *cmd)
833{
834 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
835 struct cmd_probe_reply_pdu probe;
836 uint64_t tag = cmd->tag;
837
838 dprint(FD_NET, "server: sending probe reply\n");
839
840 strcpy(me, (char *) pdu->server);
841
842 memset(&probe, 0, sizeof(probe));
843 gethostname((char *) probe.hostname, sizeof(probe.hostname));
844#ifdef CONFIG_BIG_ENDIAN
845 probe.bigendian = 1;
846#endif
847 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
848
849 probe.os = FIO_OS;
850 probe.arch = FIO_ARCH;
851 probe.bpp = sizeof(void *);
852 probe.cpus = __cpu_to_le32(cpus_online());
853
854 /*
855 * If the client supports compression and we do too, then enable it
856 */
857 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
858 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
859 use_zlib = 1;
860 } else {
861 probe.flags = 0;
862 use_zlib = 0;
863 }
864
865 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
866}
867
868static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
869{
870 struct jobs_eta *je;
871 uint64_t tag = cmd->tag;
872 size_t size;
873 int i;
874
875 dprint(FD_NET, "server sending status\n");
876
877 /*
878 * Fake ETA return if we don't have a local one, otherwise the client
879 * will end up timing out waiting for a response to the ETA request
880 */
881 je = get_jobs_eta(true, &size);
882 if (!je) {
883 size = sizeof(*je);
884 je = calloc(1, size);
885 } else {
886 je->nr_running = cpu_to_le32(je->nr_running);
887 je->nr_ramp = cpu_to_le32(je->nr_ramp);
888 je->nr_pending = cpu_to_le32(je->nr_pending);
889 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
890 je->files_open = cpu_to_le32(je->files_open);
891
892 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
893 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
894 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
895 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
896 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
897 je->rate[i] = cpu_to_le32(je->rate[i]);
898 je->iops[i] = cpu_to_le32(je->iops[i]);
899 }
900
901 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
902 je->eta_sec = cpu_to_le64(je->eta_sec);
903 je->nr_threads = cpu_to_le32(je->nr_threads);
904 je->is_pow2 = cpu_to_le32(je->is_pow2);
905 je->unit_base = cpu_to_le32(je->unit_base);
906 }
907
908 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
909 return 0;
910}
911
912static int send_update_job_reply(uint64_t __tag, int error)
913{
914 uint64_t tag = __tag;
915 uint32_t pdu_error;
916
917 pdu_error = __cpu_to_le32(error);
918 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
919}
920
921static int handle_update_job_cmd(struct fio_net_cmd *cmd)
922{
923 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
924 struct thread_data *td;
925 uint32_t tnumber;
926
927 tnumber = le32_to_cpu(pdu->thread_number);
928
929 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
930
931 if (!tnumber || tnumber > thread_number) {
932 send_update_job_reply(cmd->tag, ENODEV);
933 return 0;
934 }
935
936 td = &threads[tnumber - 1];
937 convert_thread_options_to_cpu(&td->o, &pdu->top);
938 send_update_job_reply(cmd->tag, 0);
939 return 0;
940}
941
942static int handle_trigger_cmd(struct fio_net_cmd *cmd)
943{
944 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
945 char *buf = (char *) pdu->cmd;
946 struct all_io_list *rep;
947 size_t sz;
948
949 pdu->len = le16_to_cpu(pdu->len);
950 buf[pdu->len] = '\0';
951
952 rep = get_all_io_list(IO_LIST_ALL, &sz);
953 if (!rep) {
954 struct all_io_list state;
955
956 state.threads = cpu_to_le64((uint64_t) 0);
957 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY);
958 } else
959 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE);
960
961 exec_trigger(buf);
962 return 0;
963}
964
965static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
966 struct fio_net_cmd *cmd)
967{
968 int ret;
969
970 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
971 fio_server_op(cmd->opcode), cmd->pdu_len,
972 (unsigned long long) cmd->tag);
973
974 switch (cmd->opcode) {
975 case FIO_NET_CMD_QUIT:
976 fio_terminate_threads(TERMINATE_ALL);
977 ret = 0;
978 break;
979 case FIO_NET_CMD_EXIT:
980 exit_backend = 1;
981 return -1;
982 case FIO_NET_CMD_LOAD_FILE:
983 ret = handle_load_file_cmd(cmd);
984 break;
985 case FIO_NET_CMD_JOB:
986 ret = handle_job_cmd(cmd);
987 break;
988 case FIO_NET_CMD_JOBLINE:
989 ret = handle_jobline_cmd(cmd);
990 break;
991 case FIO_NET_CMD_PROBE:
992 ret = handle_probe_cmd(cmd);
993 break;
994 case FIO_NET_CMD_SEND_ETA:
995 ret = handle_send_eta_cmd(cmd);
996 break;
997 case FIO_NET_CMD_RUN:
998 ret = handle_run_cmd(sk_out, job_list, cmd);
999 break;
1000 case FIO_NET_CMD_UPDATE_JOB:
1001 ret = handle_update_job_cmd(cmd);
1002 break;
1003 case FIO_NET_CMD_VTRIGGER:
1004 ret = handle_trigger_cmd(cmd);
1005 break;
1006 case FIO_NET_CMD_SENDFILE: {
1007 struct cmd_sendfile_reply *in;
1008 struct cmd_reply *rep;
1009
1010 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
1011
1012 in = (struct cmd_sendfile_reply *) cmd->payload;
1013 in->size = le32_to_cpu(in->size);
1014 in->error = le32_to_cpu(in->error);
1015 if (in->error) {
1016 ret = 1;
1017 rep->error = in->error;
1018 } else {
1019 ret = 0;
1020 rep->data = smalloc(in->size);
1021 if (!rep->data) {
1022 ret = 1;
1023 rep->error = ENOMEM;
1024 } else {
1025 rep->size = in->size;
1026 memcpy(rep->data, in->data, in->size);
1027 }
1028 }
1029 fio_mutex_up(&rep->lock);
1030 break;
1031 }
1032 default:
1033 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
1034 ret = 1;
1035 }
1036
1037 return ret;
1038}
1039
1040/*
1041 * Send a command with a separate PDU, not inlined in the command
1042 */
1043static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1044 off_t size, uint64_t tag, uint32_t flags)
1045{
1046 struct fio_net_cmd cmd;
1047 struct iovec iov[2];
1048
1049 iov[0].iov_base = (void *) &cmd;
1050 iov[0].iov_len = sizeof(cmd);
1051 iov[1].iov_base = (void *) buf;
1052 iov[1].iov_len = size;
1053
1054 __fio_init_net_cmd(&cmd, opcode, size, tag);
1055 cmd.flags = __cpu_to_le32(flags);
1056 fio_net_cmd_crc_pdu(&cmd, buf);
1057
1058 return fio_sendv_data(sk, iov, 2);
1059}
1060
1061static void finish_entry(struct sk_entry *entry)
1062{
1063 if (entry->flags & SK_F_FREE)
1064 free(entry->buf);
1065 else if (entry->flags & SK_F_COPY)
1066 sfree(entry->buf);
1067
1068 sfree(entry);
1069}
1070
1071static void entry_set_flags_tag(struct sk_entry *entry, struct flist_head *list,
1072 unsigned int *flags, uint64_t *tag)
1073{
1074 if (!flist_empty(list))
1075 *flags = FIO_NET_CMD_F_MORE;
1076 else
1077 *flags = 0;
1078
1079 if (entry->tagptr)
1080 *tag = *entry->tagptr;
1081 else
1082 *tag = 0;
1083}
1084
1085static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1086{
1087 unsigned int flags;
1088 uint64_t tag;
1089 int ret;
1090
1091 entry_set_flags_tag(first, &first->next, &flags, &tag);
1092
1093 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf, first->size, tag, flags);
1094
1095 while (!flist_empty(&first->next)) {
1096 struct sk_entry *next;
1097
1098 next = flist_first_entry(&first->next, struct sk_entry, list);
1099 flist_del_init(&next->list);
1100
1101 entry_set_flags_tag(next, &first->next, &flags, &tag);
1102
1103 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf, next->size, tag, flags);
1104 finish_entry(next);
1105 }
1106
1107 return ret;
1108}
1109
1110static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1111{
1112 int ret;
1113
1114 fio_mutex_down(&sk_out->xmit);
1115
1116 if (entry->flags & SK_F_VEC)
1117 ret = send_vec_entry(sk_out, entry);
1118 else if (entry->flags & SK_F_SIMPLE) {
1119 uint64_t tag = 0;
1120
1121 if (entry->tagptr)
1122 tag = *entry->tagptr;
1123
1124 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, tag, NULL);
1125 } else
1126 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf, entry->size, entry->tagptr, NULL);
1127
1128 fio_mutex_up(&sk_out->xmit);
1129
1130 if (ret)
1131 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1132
1133 finish_entry(entry);
1134 return ret;
1135}
1136
1137static int handle_xmits(struct sk_out *sk_out)
1138{
1139 struct sk_entry *entry;
1140 FLIST_HEAD(list);
1141 int ret = 0;
1142
1143 sk_lock(sk_out);
1144 if (flist_empty(&sk_out->list)) {
1145 sk_unlock(sk_out);
1146 return 0;
1147 }
1148
1149 flist_splice_init(&sk_out->list, &list);
1150 sk_unlock(sk_out);
1151
1152 while (!flist_empty(&list)) {
1153 entry = flist_entry(list.next, struct sk_entry, list);
1154 flist_del(&entry->list);
1155 ret += handle_sk_entry(sk_out, entry);
1156 }
1157
1158 return ret;
1159}
1160
1161static int handle_connection(struct sk_out *sk_out)
1162{
1163 struct fio_net_cmd *cmd = NULL;
1164 FLIST_HEAD(job_list);
1165 int ret = 0;
1166
1167 reset_fio_state();
1168
1169 /* read forever */
1170 while (!exit_backend) {
1171 struct pollfd pfd = {
1172 .fd = sk_out->sk,
1173 .events = POLLIN,
1174 };
1175
1176 ret = 0;
1177 do {
1178 int timeout = 1000;
1179
1180 if (!flist_empty(&job_list))
1181 timeout = 100;
1182
1183 handle_xmits(sk_out);
1184
1185 ret = poll(&pfd, 1, 0);
1186 if (ret < 0) {
1187 if (errno == EINTR)
1188 break;
1189 log_err("fio: poll: %s\n", strerror(errno));
1190 break;
1191 } else if (!ret) {
1192 fio_server_check_jobs(&job_list);
1193 fio_mutex_down_timeout(&sk_out->wait, timeout);
1194 continue;
1195 }
1196
1197 if (pfd.revents & POLLIN)
1198 break;
1199 if (pfd.revents & (POLLERR|POLLHUP)) {
1200 ret = 1;
1201 break;
1202 }
1203 } while (!exit_backend);
1204
1205 fio_server_check_jobs(&job_list);
1206
1207 if (ret < 0)
1208 break;
1209
1210 cmd = fio_net_recv_cmd(sk_out->sk);
1211 if (!cmd) {
1212 ret = -1;
1213 break;
1214 }
1215
1216 ret = handle_command(sk_out, &job_list, cmd);
1217 if (ret)
1218 break;
1219
1220 free(cmd);
1221 cmd = NULL;
1222 }
1223
1224 if (cmd)
1225 free(cmd);
1226
1227 handle_xmits(sk_out);
1228
1229 close(sk_out->sk);
1230 sk_out->sk = -1;
1231 __sk_out_drop(sk_out);
1232 _exit(ret);
1233}
1234
1235/* get the address on this host bound by the input socket,
1236 * whether it is ipv6 or ipv4 */
1237
1238static int get_my_addr_str(int sk)
1239{
1240 struct sockaddr_in6 myaddr6 = { 0, };
1241 struct sockaddr_in myaddr4 = { 0, };
1242 struct sockaddr *sockaddr_p;
1243 char *net_addr;
1244 socklen_t len;
1245 int ret;
1246
1247 if (use_ipv6) {
1248 len = sizeof(myaddr6);
1249 sockaddr_p = (struct sockaddr * )&myaddr6;
1250 net_addr = (char * )&myaddr6.sin6_addr;
1251 } else {
1252 len = sizeof(myaddr4);
1253 sockaddr_p = (struct sockaddr * )&myaddr4;
1254 net_addr = (char * )&myaddr4.sin_addr;
1255 }
1256
1257 ret = getsockname(sk, sockaddr_p, &len);
1258 if (ret) {
1259 log_err("fio: getsockaddr: %s\n", strerror(errno));
1260 return -1;
1261 }
1262
1263 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
1264 log_err("inet_ntop: failed to convert addr to string\n");
1265 return -1;
1266 }
1267
1268 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1269 return 0;
1270}
1271
1272static int accept_loop(int listen_sk)
1273{
1274 struct sockaddr_in addr;
1275 struct sockaddr_in6 addr6;
1276 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1277 struct pollfd pfd;
1278 int ret = 0, sk, exitval = 0;
1279 FLIST_HEAD(conn_list);
1280
1281 dprint(FD_NET, "server enter accept loop\n");
1282
1283 fio_set_fd_nonblocking(listen_sk, "server");
1284
1285 while (!exit_backend) {
1286 struct sk_out *sk_out;
1287 const char *from;
1288 char buf[64];
1289 pid_t pid;
1290
1291 pfd.fd = listen_sk;
1292 pfd.events = POLLIN;
1293 do {
1294 int timeout = 1000;
1295
1296 if (!flist_empty(&conn_list))
1297 timeout = 100;
1298
1299 ret = poll(&pfd, 1, timeout);
1300 if (ret < 0) {
1301 if (errno == EINTR)
1302 break;
1303 log_err("fio: poll: %s\n", strerror(errno));
1304 break;
1305 } else if (!ret) {
1306 fio_server_check_conns(&conn_list);
1307 continue;
1308 }
1309
1310 if (pfd.revents & POLLIN)
1311 break;
1312 } while (!exit_backend);
1313
1314 fio_server_check_conns(&conn_list);
1315
1316 if (exit_backend || ret < 0)
1317 break;
1318
1319 if (use_ipv6)
1320 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1321 else
1322 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1323
1324 if (sk < 0) {
1325 log_err("fio: accept: %s\n", strerror(errno));
1326 return -1;
1327 }
1328
1329 if (use_ipv6)
1330 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1331 else
1332 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1333
1334 dprint(FD_NET, "server: connect from %s\n", from);
1335
1336 sk_out = smalloc(sizeof(*sk_out));
1337 sk_out->sk = sk;
1338 INIT_FLIST_HEAD(&sk_out->list);
1339 __fio_mutex_init(&sk_out->lock, FIO_MUTEX_UNLOCKED);
1340 __fio_mutex_init(&sk_out->wait, FIO_MUTEX_LOCKED);
1341 __fio_mutex_init(&sk_out->xmit, FIO_MUTEX_UNLOCKED);
1342
1343 pid = fork();
1344 if (pid) {
1345 close(sk);
1346 fio_server_add_conn_pid(&conn_list, pid);
1347 continue;
1348 }
1349
1350 /* if error, it's already logged, non-fatal */
1351 get_my_addr_str(sk);
1352
1353 /*
1354 * Assign sk_out here, it'll be dropped in handle_connection()
1355 * since that function calls _exit() when done
1356 */
1357 sk_out_assign(sk_out);
1358 handle_connection(sk_out);
1359 }
1360
1361 return exitval;
1362}
1363
1364int fio_server_text_output(int level, const char *buf, size_t len)
1365{
1366 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1367 struct cmd_text_pdu *pdu;
1368 unsigned int tlen;
1369 struct timeval tv;
1370
1371 if (!sk_out || sk_out->sk == -1)
1372 return -1;
1373
1374 tlen = sizeof(*pdu) + len;
1375 pdu = malloc(tlen);
1376
1377 pdu->level = __cpu_to_le32(level);
1378 pdu->buf_len = __cpu_to_le32(len);
1379
1380 gettimeofday(&tv, NULL);
1381 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1382 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1383
1384 memcpy(pdu->buf, buf, len);
1385
1386 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1387 free(pdu);
1388 return len;
1389}
1390
1391static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1392{
1393 dst->max_val = cpu_to_le64(src->max_val);
1394 dst->min_val = cpu_to_le64(src->min_val);
1395 dst->samples = cpu_to_le64(src->samples);
1396
1397 /*
1398 * Encode to IEEE 754 for network transfer
1399 */
1400 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1401 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1402}
1403
1404static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1405{
1406 int i;
1407
1408 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1409 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1410 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1411 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1412 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1413 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
1414 dst->agg[i] = cpu_to_le64(src->agg[i]);
1415 }
1416
1417 dst->kb_base = cpu_to_le32(src->kb_base);
1418 dst->unit_base = cpu_to_le32(src->unit_base);
1419 dst->groupid = cpu_to_le32(src->groupid);
1420 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1421}
1422
1423/*
1424 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1425 * into a single payload.
1426 */
1427void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1428{
1429 struct cmd_ts_pdu p;
1430 int i, j;
1431
1432 dprint(FD_NET, "server sending end stats\n");
1433
1434 memset(&p, 0, sizeof(p));
1435
1436 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1437 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1438 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1439
1440 p.ts.error = cpu_to_le32(ts->error);
1441 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1442 p.ts.groupid = cpu_to_le32(ts->groupid);
1443 p.ts.pid = cpu_to_le32(ts->pid);
1444 p.ts.members = cpu_to_le32(ts->members);
1445 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1446
1447 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1448 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1449 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1450 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1451 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1452 }
1453
1454 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1455 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1456 p.ts.ctx = cpu_to_le64(ts->ctx);
1457 p.ts.minf = cpu_to_le64(ts->minf);
1458 p.ts.majf = cpu_to_le64(ts->majf);
1459 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1460 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1461
1462 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1463 fio_fp64_t *src = &ts->percentile_list[i];
1464 fio_fp64_t *dst = &p.ts.percentile_list[i];
1465
1466 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1467 }
1468
1469 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1470 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1471 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1472 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1473 }
1474
1475 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1476 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1477 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1478 }
1479
1480 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1481 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1482 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1483
1484 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1485 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1486 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1487 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1488 }
1489
1490 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1491 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1492
1493 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1494 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1495 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1496 }
1497
1498 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1499 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1500 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1501 p.ts.first_error = cpu_to_le32(ts->first_error);
1502 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1503 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1504
1505 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1506 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1507 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1508 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1509
1510 p.ts.nr_block_infos = le64_to_cpu(ts->nr_block_infos);
1511 for (i = 0; i < p.ts.nr_block_infos; i++)
1512 p.ts.block_infos[i] = le32_to_cpu(ts->block_infos[i]);
1513
1514 convert_gs(&p.rs, rs);
1515
1516 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1517}
1518
1519void fio_server_send_gs(struct group_run_stats *rs)
1520{
1521 struct group_run_stats gs;
1522
1523 dprint(FD_NET, "server sending group run stats\n");
1524
1525 convert_gs(&gs, rs);
1526 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1527}
1528
1529void fio_server_send_job_options(struct flist_head *opt_list,
1530 unsigned int groupid)
1531{
1532 struct cmd_job_option pdu;
1533 struct flist_head *entry;
1534
1535 if (flist_empty(opt_list))
1536 return;
1537
1538 flist_for_each(entry, opt_list) {
1539 struct print_option *p;
1540 size_t len;
1541
1542 p = flist_entry(entry, struct print_option, list);
1543 memset(&pdu, 0, sizeof(pdu));
1544
1545 if (groupid == -1U) {
1546 pdu.global = __cpu_to_le16(1);
1547 pdu.groupid = 0;
1548 } else {
1549 pdu.global = 0;
1550 pdu.groupid = cpu_to_le32(groupid);
1551 }
1552 len = strlen(p->name);
1553 if (len >= sizeof(pdu.name)) {
1554 len = sizeof(pdu.name) - 1;
1555 pdu.truncated = __cpu_to_le16(1);
1556 }
1557 memcpy(pdu.name, p->name, len);
1558 if (p->value) {
1559 len = strlen(p->value);
1560 if (len >= sizeof(pdu.value)) {
1561 len = sizeof(pdu.value) - 1;
1562 pdu.truncated = __cpu_to_le16(1);
1563 }
1564 memcpy(pdu.value, p->value, len);
1565 }
1566 fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1567 }
1568}
1569
1570static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1571{
1572 int i;
1573
1574 for (i = 0; i < 2; i++) {
1575 dst->ios[i] = cpu_to_le64(src->ios[i]);
1576 dst->merges[i] = cpu_to_le64(src->merges[i]);
1577 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1578 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1579 }
1580
1581 dst->io_ticks = cpu_to_le64(src->io_ticks);
1582 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1583 dst->slavecount = cpu_to_le32(src->slavecount);
1584 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1585}
1586
1587static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1588{
1589 int i;
1590
1591 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1592 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1593
1594 for (i = 0; i < 2; i++) {
1595 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1596 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1597 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1598 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1599 }
1600
1601 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1602 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1603 dst->s.msec = cpu_to_le64(src->s.msec);
1604}
1605
1606void fio_server_send_du(void)
1607{
1608 struct disk_util *du;
1609 struct flist_head *entry;
1610 struct cmd_du_pdu pdu;
1611
1612 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1613
1614 memset(&pdu, 0, sizeof(pdu));
1615
1616 flist_for_each(entry, &disk_list) {
1617 du = flist_entry(entry, struct disk_util, list);
1618
1619 convert_dus(&pdu.dus, &du->dus);
1620 convert_agg(&pdu.agg, &du->agg);
1621
1622 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1623 }
1624}
1625
1626static int fio_send_iolog_gz(struct sk_entry *first, struct io_log *log)
1627{
1628 int ret = 0;
1629#ifdef CONFIG_ZLIB
1630 struct sk_entry *entry;
1631 z_stream stream;
1632 void *out_pdu;
1633
1634 /*
1635 * Dirty - since the log is potentially huge, compress it into
1636 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1637 * side defragment it.
1638 */
1639 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1640
1641 stream.zalloc = Z_NULL;
1642 stream.zfree = Z_NULL;
1643 stream.opaque = Z_NULL;
1644
1645 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1646 ret = 1;
1647 goto err;
1648 }
1649
1650 stream.next_in = (void *) log->log;
1651 stream.avail_in = log->nr_samples * log_entry_sz(log);
1652
1653 do {
1654 unsigned int this_len;
1655
1656 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1657 stream.next_out = out_pdu;
1658 ret = deflate(&stream, Z_FINISH);
1659 /* may be Z_OK, or Z_STREAM_END */
1660 if (ret < 0)
1661 goto err_zlib;
1662
1663 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1664
1665 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1666 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1667 out_pdu = NULL;
1668 flist_add_tail(&entry->list, &first->next);
1669 } while (stream.avail_in);
1670
1671err_zlib:
1672 deflateEnd(&stream);
1673err:
1674 free(out_pdu);
1675#endif
1676 return ret;
1677}
1678
1679int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1680{
1681 struct cmd_iolog_pdu pdu;
1682 struct sk_entry *first;
1683 int i, ret = 0;
1684
1685 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1686 pdu.thread_number = cpu_to_le32(td->thread_number);
1687 pdu.log_type = cpu_to_le32(log->log_type);
1688 pdu.compressed = cpu_to_le32(use_zlib);
1689
1690 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1691 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1692
1693 for (i = 0; i < log->nr_samples; i++) {
1694 struct io_sample *s = get_sample(log, i);
1695
1696 s->time = cpu_to_le64(s->time);
1697 s->val = cpu_to_le64(s->val);
1698 s->__ddir = cpu_to_le32(s->__ddir);
1699 s->bs = cpu_to_le32(s->bs);
1700
1701 if (log->log_offset) {
1702 struct io_sample_offset *so = (void *) s;
1703
1704 so->offset = cpu_to_le64(so->offset);
1705 }
1706 }
1707
1708 /*
1709 * Assemble header entry first
1710 */
1711 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY);
1712
1713 /*
1714 * Now append actual log entries. Compress if we can, otherwise just
1715 * plain text output.
1716 */
1717 if (use_zlib)
1718 ret = fio_send_iolog_gz(first, log);
1719 else {
1720 struct sk_entry *entry;
1721
1722 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, log->log,
1723 log->nr_samples * log_entry_sz(log),
1724 NULL, SK_F_VEC | SK_F_INLINE);
1725 flist_add_tail(&entry->list, &first->next);
1726 }
1727
1728 fio_net_queue_entry(first);
1729 return ret;
1730}
1731
1732void fio_server_send_add_job(struct thread_data *td)
1733{
1734 struct cmd_add_job_pdu pdu;
1735
1736 memset(&pdu, 0, sizeof(pdu));
1737 pdu.thread_number = cpu_to_le32(td->thread_number);
1738 pdu.groupid = cpu_to_le32(td->groupid);
1739 convert_thread_options_to_net(&pdu.top, &td->o);
1740
1741 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1742}
1743
1744void fio_server_send_start(struct thread_data *td)
1745{
1746 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1747
1748 assert(sk_out->sk != -1);
1749
1750 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, 0, SK_F_SIMPLE);
1751}
1752
1753int fio_server_get_verify_state(const char *name, int threadnumber,
1754 void **datap, int *version)
1755{
1756 struct thread_io_list *s;
1757 struct cmd_sendfile out;
1758 struct cmd_reply *rep;
1759 uint64_t tag;
1760 void *data;
1761
1762 dprint(FD_NET, "server: request verify state\n");
1763
1764 rep = smalloc(sizeof(*rep));
1765 if (!rep) {
1766 log_err("fio: smalloc pool too small\n");
1767 return 1;
1768 }
1769
1770 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1771 rep->data = NULL;
1772 rep->error = 0;
1773
1774 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1775 threadnumber);
1776 tag = (uint64_t) (uintptr_t) rep;
1777 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag, SK_F_COPY);
1778
1779 /*
1780 * Wait for the backend to receive the reply
1781 */
1782 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
1783 log_err("fio: timed out waiting for reply\n");
1784 goto fail;
1785 }
1786
1787 if (rep->error) {
1788 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error));
1789fail:
1790 *datap = NULL;
1791 sfree(rep);
1792 fio_net_queue_quit();
1793 return 1;
1794 }
1795
1796 /*
1797 * The format is verify_state_hdr, then thread_io_list. Verify
1798 * the header, and the thread_io_list checksum
1799 */
1800 s = rep->data + sizeof(struct verify_state_hdr);
1801 if (verify_state_hdr(rep->data, s, version))
1802 goto fail;
1803
1804 /*
1805 * Don't need the header from now, copy just the thread_io_list
1806 */
1807 rep->size -= sizeof(struct verify_state_hdr);
1808 data = malloc(rep->size);
1809 memcpy(data, s, rep->size);
1810 *datap = data;
1811
1812 sfree(rep->data);
1813 __fio_mutex_remove(&rep->lock);
1814 sfree(rep);
1815 return 0;
1816}
1817
1818static int fio_init_server_ip(void)
1819{
1820 struct sockaddr *addr;
1821 socklen_t socklen;
1822 char buf[80];
1823 const char *str;
1824 int sk, opt;
1825
1826 if (use_ipv6)
1827 sk = socket(AF_INET6, SOCK_STREAM, 0);
1828 else
1829 sk = socket(AF_INET, SOCK_STREAM, 0);
1830
1831 if (sk < 0) {
1832 log_err("fio: socket: %s\n", strerror(errno));
1833 return -1;
1834 }
1835
1836 opt = 1;
1837 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1838 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1839 close(sk);
1840 return -1;
1841 }
1842#ifdef SO_REUSEPORT
1843 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1844 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1845 close(sk);
1846 return -1;
1847 }
1848#endif
1849
1850 if (use_ipv6) {
1851 const void *src = &saddr_in6.sin6_addr;
1852
1853 addr = (struct sockaddr *) &saddr_in6;
1854 socklen = sizeof(saddr_in6);
1855 saddr_in6.sin6_family = AF_INET6;
1856 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1857 } else {
1858 const void *src = &saddr_in.sin_addr;
1859
1860 addr = (struct sockaddr *) &saddr_in;
1861 socklen = sizeof(saddr_in);
1862 saddr_in.sin_family = AF_INET;
1863 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1864 }
1865
1866 if (bind(sk, addr, socklen) < 0) {
1867 log_err("fio: bind: %s\n", strerror(errno));
1868 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1869 close(sk);
1870 return -1;
1871 }
1872
1873 return sk;
1874}
1875
1876static int fio_init_server_sock(void)
1877{
1878 struct sockaddr_un addr;
1879 socklen_t len;
1880 mode_t mode;
1881 int sk;
1882
1883 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1884 if (sk < 0) {
1885 log_err("fio: socket: %s\n", strerror(errno));
1886 return -1;
1887 }
1888
1889 mode = umask(000);
1890
1891 memset(&addr, 0, sizeof(addr));
1892 addr.sun_family = AF_UNIX;
1893 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1894
1895 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1896
1897 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1898 log_err("fio: bind: %s\n", strerror(errno));
1899 close(sk);
1900 return -1;
1901 }
1902
1903 umask(mode);
1904 return sk;
1905}
1906
1907static int fio_init_server_connection(void)
1908{
1909 char bind_str[128];
1910 int sk;
1911
1912 dprint(FD_NET, "starting server\n");
1913
1914 if (!bind_sock)
1915 sk = fio_init_server_ip();
1916 else
1917 sk = fio_init_server_sock();
1918
1919 if (sk < 0)
1920 return sk;
1921
1922 memset(bind_str, 0, sizeof(bind_str));
1923
1924 if (!bind_sock) {
1925 char *p, port[16];
1926 const void *src;
1927 int af;
1928
1929 if (use_ipv6) {
1930 af = AF_INET6;
1931 src = &saddr_in6.sin6_addr;
1932 } else {
1933 af = AF_INET;
1934 src = &saddr_in.sin_addr;
1935 }
1936
1937 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1938
1939 sprintf(port, ",%u", fio_net_port);
1940 if (p)
1941 strcat(p, port);
1942 else
1943 strncpy(bind_str, port, sizeof(bind_str) - 1);
1944 } else
1945 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1946
1947 log_info("fio: server listening on %s\n", bind_str);
1948
1949 if (listen(sk, 4) < 0) {
1950 log_err("fio: listen: %s\n", strerror(errno));
1951 close(sk);
1952 return -1;
1953 }
1954
1955 return sk;
1956}
1957
1958int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1959 struct in6_addr *inp6)
1960
1961{
1962 int ret = 0;
1963
1964 if (ipv6)
1965 ret = inet_pton(AF_INET6, host, inp6);
1966 else
1967 ret = inet_pton(AF_INET, host, inp);
1968
1969 if (ret != 1) {
1970 struct addrinfo hints, *res;
1971
1972 memset(&hints, 0, sizeof(hints));
1973 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1974 hints.ai_socktype = SOCK_STREAM;
1975
1976 ret = getaddrinfo(host, NULL, &hints, &res);
1977 if (ret) {
1978 log_err("fio: failed to resolve <%s> (%s)\n", host,
1979 gai_strerror(ret));
1980 return 1;
1981 }
1982
1983 if (ipv6)
1984 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1985 else
1986 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1987
1988 ret = 1;
1989 freeaddrinfo(res);
1990 }
1991
1992 return !(ret == 1);
1993}
1994
1995/*
1996 * Parse a host/ip/port string. Reads from 'str'.
1997 *
1998 * Outputs:
1999 *
2000 * For IPv4:
2001 * *ptr is the host, *port is the port, inp is the destination.
2002 * For IPv6:
2003 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
2004 * For local domain sockets:
2005 * *ptr is the filename, *is_sock is 1.
2006 */
2007int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
2008 int *port, struct in_addr *inp,
2009 struct in6_addr *inp6, int *ipv6)
2010{
2011 const char *host = str;
2012 char *portp;
2013 int lport = 0;
2014
2015 *ptr = NULL;
2016 *is_sock = 0;
2017 *port = fio_net_port;
2018 *ipv6 = 0;
2019
2020 if (!strncmp(str, "sock:", 5)) {
2021 *ptr = strdup(str + 5);
2022 *is_sock = 1;
2023
2024 return 0;
2025 }
2026
2027 /*
2028 * Is it ip:<ip or host>:port
2029 */
2030 if (!strncmp(host, "ip:", 3))
2031 host += 3;
2032 else if (!strncmp(host, "ip4:", 4))
2033 host += 4;
2034 else if (!strncmp(host, "ip6:", 4)) {
2035 host += 4;
2036 *ipv6 = 1;
2037 } else if (host[0] == ':') {
2038 /* String is :port */
2039 host++;
2040 lport = atoi(host);
2041 if (!lport || lport > 65535) {
2042 log_err("fio: bad server port %u\n", lport);
2043 return 1;
2044 }
2045 /* no hostname given, we are done */
2046 *port = lport;
2047 return 0;
2048 }
2049
2050 /*
2051 * If no port seen yet, check if there's a last ',' at the end
2052 */
2053 if (!lport) {
2054 portp = strchr(host, ',');
2055 if (portp) {
2056 *portp = '\0';
2057 portp++;
2058 lport = atoi(portp);
2059 if (!lport || lport > 65535) {
2060 log_err("fio: bad server port %u\n", lport);
2061 return 1;
2062 }
2063 }
2064 }
2065
2066 if (lport)
2067 *port = lport;
2068
2069 if (!strlen(host))
2070 return 0;
2071
2072 *ptr = strdup(host);
2073
2074 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
2075 free(*ptr);
2076 *ptr = NULL;
2077 return 1;
2078 }
2079
2080 if (*port == 0)
2081 *port = fio_net_port;
2082
2083 return 0;
2084}
2085
2086/*
2087 * Server arg should be one of:
2088 *
2089 * sock:/path/to/socket
2090 * ip:1.2.3.4
2091 * 1.2.3.4
2092 *
2093 * Where sock uses unix domain sockets, and ip binds the server to
2094 * a specific interface. If no arguments are given to the server, it
2095 * uses IP and binds to 0.0.0.0.
2096 *
2097 */
2098static int fio_handle_server_arg(void)
2099{
2100 int port = fio_net_port;
2101 int is_sock, ret = 0;
2102
2103 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2104
2105 if (!fio_server_arg)
2106 goto out;
2107
2108 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
2109 &port, &saddr_in.sin_addr,
2110 &saddr_in6.sin6_addr, &use_ipv6);
2111
2112 if (!is_sock && bind_sock) {
2113 free(bind_sock);
2114 bind_sock = NULL;
2115 }
2116
2117out:
2118 fio_net_port = port;
2119 saddr_in.sin_port = htons(port);
2120 saddr_in6.sin6_port = htons(port);
2121 return ret;
2122}
2123
2124static void sig_int(int sig)
2125{
2126 if (bind_sock)
2127 unlink(bind_sock);
2128}
2129
2130static void set_sig_handlers(void)
2131{
2132 struct sigaction act;
2133
2134 memset(&act, 0, sizeof(act));
2135 act.sa_handler = sig_int;
2136 act.sa_flags = SA_RESTART;
2137 sigaction(SIGINT, &act, NULL);
2138}
2139
2140static int fio_server(void)
2141{
2142 int sk, ret;
2143
2144 if (pthread_key_create(&sk_out_key, NULL)) {
2145 log_err("fio: can't create sk_out backend key\n");
2146 return -1;
2147 }
2148
2149 pthread_setspecific(sk_out_key, NULL);
2150
2151 dprint(FD_NET, "starting server\n");
2152
2153 if (fio_handle_server_arg())
2154 return -1;
2155
2156 sk = fio_init_server_connection();
2157 if (sk < 0)
2158 return -1;
2159
2160 set_sig_handlers();
2161
2162 ret = accept_loop(sk);
2163
2164 close(sk);
2165
2166 if (fio_server_arg) {
2167 free(fio_server_arg);
2168 fio_server_arg = NULL;
2169 }
2170 if (bind_sock)
2171 free(bind_sock);
2172
2173 return ret;
2174}
2175
2176void fio_server_got_signal(int signal)
2177{
2178 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2179
2180 assert(sk_out);
2181
2182 if (signal == SIGPIPE)
2183 sk_out->sk = -1;
2184 else {
2185 log_info("\nfio: terminating on signal %d\n", signal);
2186 exit_backend = 1;
2187 }
2188}
2189
2190static int check_existing_pidfile(const char *pidfile)
2191{
2192 struct stat sb;
2193 char buf[16];
2194 pid_t pid;
2195 FILE *f;
2196
2197 if (stat(pidfile, &sb))
2198 return 0;
2199
2200 f = fopen(pidfile, "r");
2201 if (!f)
2202 return 0;
2203
2204 if (fread(buf, sb.st_size, 1, f) <= 0) {
2205 fclose(f);
2206 return 1;
2207 }
2208 fclose(f);
2209
2210 pid = atoi(buf);
2211 if (kill(pid, SIGCONT) < 0)
2212 return errno != ESRCH;
2213
2214 return 1;
2215}
2216
2217static int write_pid(pid_t pid, const char *pidfile)
2218{
2219 FILE *fpid;
2220
2221 fpid = fopen(pidfile, "w");
2222 if (!fpid) {
2223 log_err("fio: failed opening pid file %s\n", pidfile);
2224 return 1;
2225 }
2226
2227 fprintf(fpid, "%u\n", (unsigned int) pid);
2228 fclose(fpid);
2229 return 0;
2230}
2231
2232/*
2233 * If pidfile is specified, background us.
2234 */
2235int fio_start_server(char *pidfile)
2236{
2237 pid_t pid;
2238 int ret;
2239
2240#if defined(WIN32)
2241 WSADATA wsd;
2242 WSAStartup(MAKEWORD(2, 2), &wsd);
2243#endif
2244
2245 if (!pidfile)
2246 return fio_server();
2247
2248 if (check_existing_pidfile(pidfile)) {
2249 log_err("fio: pidfile %s exists and server appears alive\n",
2250 pidfile);
2251 free(pidfile);
2252 return -1;
2253 }
2254
2255 pid = fork();
2256 if (pid < 0) {
2257 log_err("fio: failed server fork: %s", strerror(errno));
2258 free(pidfile);
2259 return -1;
2260 } else if (pid) {
2261 ret = write_pid(pid, pidfile);
2262 free(pidfile);
2263 _exit(ret);
2264 }
2265
2266 setsid();
2267 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2268 log_syslog = 1;
2269 close(STDIN_FILENO);
2270 close(STDOUT_FILENO);
2271 close(STDERR_FILENO);
2272 f_out = NULL;
2273 f_err = NULL;
2274
2275 ret = fio_server();
2276
2277 closelog();
2278 unlink(pidfile);
2279 free(pidfile);
2280 return ret;
2281}
2282
2283void fio_server_set_arg(const char *arg)
2284{
2285 fio_server_arg = strdup(arg);
2286}
fio - Flexible IO Tester