glusterfs: update for new API
[fio.git] / server.c
CommitLineData
50d16976
JA
1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
50d16976 4#include <errno.h>
8393ca93 5#include <poll.h>
50d16976
JA
6#include <sys/types.h>
7#include <sys/wait.h>
d05c4a03 8#include <sys/socket.h>
87aa8f19
JA
9#include <sys/stat.h>
10#include <sys/un.h>
1f51bba9 11#include <sys/uio.h>
50d16976
JA
12#include <netinet/in.h>
13#include <arpa/inet.h>
14#include <netdb.h>
e46d8091 15#include <syslog.h>
9e22ecb0 16#include <signal.h>
3989b143 17#ifdef CONFIG_ZLIB
1b42725f 18#include <zlib.h>
3989b143 19#endif
50d16976
JA
20
21#include "fio.h"
296ab20a 22#include "options.h"
132159a5 23#include "server.h"
fcee5ff6 24#include "crc/crc16.h"
c7c6cb4c 25#include "lib/ieee754.h"
3d2d14bc 26#include "verify-state.h"
ca09be4b 27#include "smalloc.h"
89cf1480 28
5adc2447 29int fio_net_port = FIO_NET_PORT;
50d16976 30
f1867a7f 31bool exit_backend = false;
009b1be4 32
f77d4b73
JA
33enum {
34 SK_F_FREE = 1,
35 SK_F_COPY = 2,
36 SK_F_SIMPLE = 4,
02594e37 37 SK_F_VEC = 8,
bead01d7 38 SK_F_INLINE = 16,
f77d4b73
JA
39};
40
41struct sk_entry {
4d27d429
JA
42 struct flist_head list; /* link on sk_out->list */
43 int flags; /* SK_F_* */
44 int opcode; /* Actual command fields */
f77d4b73
JA
45 void *buf;
46 off_t size;
28c7bcdf 47 uint64_t tag;
4d27d429 48 struct flist_head next; /* Other sk_entry's, if linked command */
f77d4b73
JA
49};
50
87aa8f19
JA
51static char *fio_server_arg;
52static char *bind_sock;
53static struct sockaddr_in saddr_in;
811826be 54static struct sockaddr_in6 saddr_in6;
811826be 55static int use_ipv6;
3989b143
JA
56#ifdef CONFIG_ZLIB
57static unsigned int has_zlib = 1;
58#else
59static unsigned int has_zlib = 0;
60#endif
61static unsigned int use_zlib;
ca09be4b 62static char me[128];
37db14fe 63
f77d4b73
JA
64static pthread_key_t sk_out_key;
65
122c7725
JA
66struct fio_fork_item {
67 struct flist_head list;
68 int exitval;
69 int signal;
70 int exited;
71 pid_t pid;
72};
73
ca09be4b 74struct cmd_reply {
971caeb1 75 struct fio_sem lock;
ca09be4b
JA
76 void *data;
77 size_t size;
78 int error;
79};
80
89c1707c
JA
81static const char *fio_server_ops[FIO_NET_CMD_NR] = {
82 "",
83 "QUIT",
84 "EXIT",
85 "JOB",
86 "JOBLINE",
87 "TEXT",
88 "TS",
89 "GS",
90 "SEND_ETA",
91 "ETA",
92 "PROBE",
93 "START",
d09a64a0
JA
94 "STOP",
95 "DISK_UTIL",
b9d2f30a 96 "SERVER_START",
807f9971 97 "ADD_JOB",
ca09be4b
JA
98 "RUN",
99 "IOLOG",
100 "UPDATE_JOB",
101 "LOAD_FILE",
102 "VTRIGGER",
103 "SENDFILE",
9d9937b5 104 "JOB_OPT",
89c1707c
JA
105};
106
f77d4b73
JA
107static void sk_lock(struct sk_out *sk_out)
108{
971caeb1 109 fio_sem_down(&sk_out->lock);
f77d4b73
JA
110}
111
112static void sk_unlock(struct sk_out *sk_out)
113{
971caeb1 114 fio_sem_up(&sk_out->lock);
f77d4b73
JA
115}
116
24660963
JA
117void sk_out_assign(struct sk_out *sk_out)
118{
119 if (!sk_out)
120 return;
121
122 sk_lock(sk_out);
123 sk_out->refs++;
124 sk_unlock(sk_out);
125 pthread_setspecific(sk_out_key, sk_out);
126}
127
bce503fc 128static void sk_out_free(struct sk_out *sk_out)
24660963 129{
971caeb1
BVA
130 __fio_sem_remove(&sk_out->lock);
131 __fio_sem_remove(&sk_out->wait);
132 __fio_sem_remove(&sk_out->xmit);
24660963
JA
133 sfree(sk_out);
134}
135
bce503fc 136static int __sk_out_drop(struct sk_out *sk_out)
24660963 137{
24660963
JA
138 if (sk_out) {
139 int refs;
140
141 sk_lock(sk_out);
c0d3245a 142 assert(sk_out->refs != 0);
24660963
JA
143 refs = --sk_out->refs;
144 sk_unlock(sk_out);
145
bce503fc
JA
146 if (!refs) {
147 sk_out_free(sk_out);
c0d3245a 148 pthread_setspecific(sk_out_key, NULL);
bce503fc
JA
149 return 0;
150 }
151 }
152
153 return 1;
154}
155
156void sk_out_drop(void)
157{
158 struct sk_out *sk_out;
24660963 159
bce503fc 160 sk_out = pthread_getspecific(sk_out_key);
c0d3245a 161 __sk_out_drop(sk_out);
24660963
JA
162}
163
9d2c74d7
JA
164static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
165 uint32_t pdu_len, uint64_t tag)
166{
167 memset(cmd, 0, sizeof(*cmd));
168
169 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
170 cmd->opcode = cpu_to_le16(opcode);
171 cmd->tag = cpu_to_le64(tag);
172 cmd->pdu_len = cpu_to_le32(pdu_len);
173}
174
175
176static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
177 const void *pdu, uint32_t pdu_len, uint64_t tag)
178{
179 __fio_init_net_cmd(cmd, opcode, pdu_len, tag);
180
181 if (pdu)
182 memcpy(&cmd->payload, pdu, pdu_len);
183}
184
89c1707c
JA
185const char *fio_server_op(unsigned int op)
186{
187 static char buf[32];
188
189 if (op < FIO_NET_CMD_NR)
190 return fio_server_ops[op];
191
192 sprintf(buf, "UNKNOWN/%d", op);
193 return buf;
194}
195
5235f626 196static ssize_t iov_total_len(const struct iovec *iov, int count)
132159a5 197{
5235f626 198 ssize_t ret = 0;
794d69ca 199
5235f626
JA
200 while (count--) {
201 ret += iov->iov_len;
202 iov++;
203 }
204
205 return ret;
206}
132159a5 207
5235f626
JA
208static int fio_sendv_data(int sk, struct iovec *iov, int count)
209{
210 ssize_t total_len = iov_total_len(iov, count);
211 ssize_t ret;
212
213 do {
214 ret = writev(sk, iov, count);
132159a5 215 if (ret > 0) {
5235f626
JA
216 total_len -= ret;
217 if (!total_len)
132159a5 218 break;
5235f626
JA
219
220 while (ret) {
221 if (ret >= iov->iov_len) {
222 ret -= iov->iov_len;
223 iov++;
224 continue;
225 }
226 iov->iov_base += ret;
227 iov->iov_len -= ret;
228 ret = 0;
229 }
132159a5
JA
230 } else if (!ret)
231 break;
232 else if (errno == EAGAIN || errno == EINTR)
233 continue;
7b821684
JA
234 else
235 break;
132159a5
JA
236 } while (!exit_backend);
237
5235f626 238 if (!total_len)
132159a5
JA
239 return 0;
240
241 return 1;
242}
243
9d2c74d7 244static int fio_send_data(int sk, const void *p, unsigned int len)
5235f626
JA
245{
246 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
247
248 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
249
250 return fio_sendv_data(sk, &iov, 1);
251}
252
0f836f39 253static int fio_recv_data(int sk, void *buf, unsigned int len, bool wait)
132159a5 254{
54e62ad4 255 int flags;
0f836f39 256 char *p = buf;
54e62ad4
JA
257
258 if (wait)
259 flags = MSG_WAITALL;
260 else
bf67f422 261 flags = OS_MSG_DONTWAIT;
54e62ad4 262
132159a5 263 do {
54e62ad4 264 int ret = recv(sk, p, len, flags);
132159a5
JA
265
266 if (ret > 0) {
267 len -= ret;
268 if (!len)
269 break;
270 p += ret;
271 continue;
272 } else if (!ret)
273 break;
54e62ad4
JA
274 else if (errno == EAGAIN || errno == EINTR) {
275 if (wait)
276 continue;
277 break;
278 } else
7b821684 279 break;
132159a5
JA
280 } while (!exit_backend);
281
282 if (!len)
283 return 0;
284
285 return -1;
286}
287
288static int verify_convert_cmd(struct fio_net_cmd *cmd)
289{
fcee5ff6 290 uint16_t crc;
132159a5 291
fcee5ff6
JA
292 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
293 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
132159a5 294
25dfa848 295 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
fcee5ff6 296 if (crc != cmd->cmd_crc16) {
132159a5 297 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
fcee5ff6 298 cmd->cmd_crc16, crc);
b2ef2748
JA
299 fprintf(f_err, "fio: server bad crc on command (got %x, wanted %x)\n",
300 cmd->cmd_crc16, crc);
132159a5
JA
301 return 1;
302 }
303
304 cmd->version = le16_to_cpu(cmd->version);
305 cmd->opcode = le16_to_cpu(cmd->opcode);
306 cmd->flags = le32_to_cpu(cmd->flags);
af9c9fb3 307 cmd->tag = le64_to_cpu(cmd->tag);
132159a5
JA
308 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
309
310 switch (cmd->version) {
fa2ea806 311 case FIO_SERVER_VER:
132159a5
JA
312 break;
313 default:
314 log_err("fio: bad server cmd version %d\n", cmd->version);
b2ef2748
JA
315 fprintf(f_err, "fio: client/server version mismatch (%d != %d)\n",
316 cmd->version, FIO_SERVER_VER);
132159a5
JA
317 return 1;
318 }
319
7c922795
JA
320 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
321 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
322 return 1;
323 }
324
132159a5
JA
325 return 0;
326}
327
a64e88da
JA
328/*
329 * Read (and defragment, if necessary) incoming commands
330 */
54e62ad4 331struct fio_net_cmd *fio_net_recv_cmd(int sk, bool wait)
132159a5 332{
dfbf1f6f 333 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
a64e88da 334 size_t cmd_size = 0, pdu_offset = 0;
fcee5ff6 335 uint16_t crc;
a64e88da
JA
336 int ret, first = 1;
337 void *pdu = NULL;
132159a5 338
a64e88da 339 do {
54e62ad4 340 ret = fio_recv_data(sk, &cmd, sizeof(cmd), wait);
a64e88da
JA
341 if (ret)
342 break;
132159a5 343
a64e88da
JA
344 /* We have a command, verify it and swap if need be */
345 ret = verify_convert_cmd(&cmd);
346 if (ret)
347 break;
132159a5 348
0b8f30a5
JA
349 if (first) {
350 /* if this is text, add room for \0 at the end */
351 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
352 assert(!cmdret);
353 } else
a64e88da 354 cmd_size += cmd.pdu_len;
132159a5 355
dfbf1f6f
JA
356 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
357 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
358 ret = 1;
359 break;
360 }
361
362 tmp = realloc(cmdret, cmd_size);
363 if (!tmp) {
364 log_err("fio: server failed allocating cmd\n");
365 ret = 1;
366 break;
367 }
368 cmdret = tmp;
132159a5 369
a64e88da
JA
370 if (first)
371 memcpy(cmdret, &cmd, sizeof(cmd));
67f15dcf
JA
372 else if (cmdret->opcode != cmd.opcode) {
373 log_err("fio: fragment opcode mismatch (%d != %d)\n",
374 cmdret->opcode, cmd.opcode);
375 ret = 1;
376 break;
377 }
a64e88da
JA
378
379 if (!cmd.pdu_len)
380 break;
381
382 /* There's payload, get it */
0f836f39 383 pdu = (char *) cmdret->payload + pdu_offset;
54e62ad4 384 ret = fio_recv_data(sk, pdu, cmd.pdu_len, wait);
a64e88da
JA
385 if (ret)
386 break;
387
388 /* Verify payload crc */
25dfa848 389 crc = fio_crc16(pdu, cmd.pdu_len);
a64e88da
JA
390 if (crc != cmd.pdu_crc16) {
391 log_err("fio: server bad crc on payload ");
392 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
393 ret = 1;
394 break;
395 }
396
397 pdu_offset += cmd.pdu_len;
817f06bb
JA
398 if (!first)
399 cmdret->pdu_len += cmd.pdu_len;
a64e88da
JA
400 first = 0;
401 } while (cmd.flags & FIO_NET_CMD_F_MORE);
132159a5 402
a64e88da
JA
403 if (ret) {
404 free(cmdret);
405 cmdret = NULL;
0b8f30a5
JA
406 } else if (cmdret) {
407 /* zero-terminate text input */
084d1c6f
JA
408 if (cmdret->pdu_len) {
409 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
8a1db9a1
JA
410 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
411 char *buf = (char *) __pdu->buf;
0b8f30a5 412
8a1db9a1 413 buf[__pdu->buf_len] = '\0';
084d1c6f 414 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
8a1db9a1
JA
415 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
416 char *buf = (char *) __pdu->buf;
417 int len = le32_to_cpu(__pdu->buf_len);
084d1c6f 418
46bcd498 419 buf[len] = '\0';
084d1c6f 420 }
0b8f30a5 421 }
084d1c6f 422
0b8f30a5 423 /* frag flag is internal */
a64e88da 424 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
0b8f30a5 425 }
a64e88da
JA
426
427 return cmdret;
132159a5
JA
428}
429
40c60516
JA
430static void add_reply(uint64_t tag, struct flist_head *list)
431{
a572bbfb 432 struct fio_net_cmd_reply *reply;
40c60516 433
a572bbfb 434 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
40c60516
JA
435 flist_add_tail(&reply->list, list);
436}
437
438static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
439{
440 struct fio_net_cmd_reply *reply;
441
442 reply = calloc(1, sizeof(*reply));
443 INIT_FLIST_HEAD(&reply->list);
8b6a404c 444 fio_gettime(&reply->ts, NULL);
40c60516
JA
445 reply->saved_tag = tag;
446 reply->opcode = opcode;
447
448 return (uintptr_t) reply;
449}
450
451static void free_reply(uint64_t tag)
452{
a572bbfb 453 struct fio_net_cmd_reply *reply;
40c60516 454
a572bbfb 455 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
40c60516
JA
456 free(reply);
457}
458
9d2c74d7 459static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
132159a5
JA
460{
461 uint32_t pdu_len;
462
25dfa848 463 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
132159a5
JA
464
465 pdu_len = le32_to_cpu(cmd->pdu_len);
1b42725f
JA
466 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
467}
468
9d2c74d7 469static void fio_net_cmd_crc(struct fio_net_cmd *cmd)
1b42725f
JA
470{
471 fio_net_cmd_crc_pdu(cmd, cmd->payload);
132159a5
JA
472}
473
af9c9fb3 474int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
40c60516 475 uint64_t *tagptr, struct flist_head *list)
794d69ca 476{
7f868316
JA
477 struct fio_net_cmd *cmd = NULL;
478 size_t this_len, cur_len = 0;
40c60516 479 uint64_t tag;
794d69ca
JA
480 int ret;
481
40c60516
JA
482 if (list) {
483 assert(tagptr);
484 tag = *tagptr = alloc_reply(*tagptr, opcode);
485 } else
486 tag = tagptr ? *tagptr : 0;
487
794d69ca
JA
488 do {
489 this_len = size;
b9d2f30a
JA
490 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
491 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
794d69ca 492
7f868316
JA
493 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
494 if (cmd)
495 free(cmd);
496
497 cur_len = sizeof(*cmd) + this_len;
498 cmd = malloc(cur_len);
499 }
794d69ca 500
af9c9fb3 501 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
794d69ca
JA
502
503 if (this_len < size)
ddcc0b69 504 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
794d69ca
JA
505
506 fio_net_cmd_crc(cmd);
507
508 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
794d69ca
JA
509 size -= this_len;
510 buf += this_len;
511 } while (!ret && size);
512
40c60516
JA
513 if (list) {
514 if (ret)
515 free_reply(tag);
516 else
517 add_reply(tag, list);
518 }
519
7f868316
JA
520 if (cmd)
521 free(cmd);
522
794d69ca
JA
523 return ret;
524}
525
0cba0f91
JA
526static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf,
527 size_t size, uint64_t *tagptr,
528 int flags)
f77d4b73 529{
f77d4b73
JA
530 struct sk_entry *entry;
531
532 entry = smalloc(sizeof(*entry));
e3500d99
JA
533 if (!entry)
534 return NULL;
535
02594e37 536 INIT_FLIST_HEAD(&entry->next);
f77d4b73
JA
537 entry->opcode = opcode;
538 if (flags & SK_F_COPY) {
539 entry->buf = smalloc(size);
540 memcpy(entry->buf, buf, size);
541 } else
542 entry->buf = buf;
bead01d7 543
f77d4b73 544 entry->size = size;
28c7bcdf
JA
545 if (tagptr)
546 entry->tag = *tagptr;
547 else
548 entry->tag = 0;
f77d4b73 549 entry->flags = flags;
02594e37
JA
550 return entry;
551}
552
bead01d7
JA
553static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry);
554
02594e37
JA
555static void fio_net_queue_entry(struct sk_entry *entry)
556{
557 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
558
bead01d7
JA
559 if (entry->flags & SK_F_INLINE)
560 handle_sk_entry(sk_out, entry);
561 else {
562 sk_lock(sk_out);
563 flist_add_tail(&entry->list, &sk_out->list);
564 sk_unlock(sk_out);
f77d4b73 565
971caeb1 566 fio_sem_up(&sk_out->wait);
bead01d7 567 }
02594e37 568}
f77d4b73 569
02594e37
JA
570static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
571 uint64_t *tagptr, int flags)
572{
573 struct sk_entry *entry;
574
575 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
81b3c86f
JA
576 if (entry) {
577 fio_net_queue_entry(entry);
578 return 0;
579 }
580
581 return 1;
f77d4b73
JA
582}
583
89c1707c 584static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
132159a5 585{
178cde9f 586 struct fio_net_cmd cmd;
132159a5 587
af9c9fb3 588 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
132159a5
JA
589 fio_net_cmd_crc(&cmd);
590
591 return fio_send_data(sk, &cmd, sizeof(cmd));
592}
593
89c1707c
JA
594/*
595 * If 'list' is non-NULL, then allocate and store the sent command for
596 * later verification.
597 */
598int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
599 struct flist_head *list)
600{
89c1707c
JA
601 int ret;
602
40c60516
JA
603 if (list)
604 tag = alloc_reply(tag, opcode);
89c1707c 605
40c60516 606 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
89c1707c 607 if (ret) {
40c60516
JA
608 if (list)
609 free_reply(tag);
610
89c1707c
JA
611 return ret;
612 }
613
40c60516
JA
614 if (list)
615 add_reply(tag, list);
616
89c1707c
JA
617 return 0;
618}
619
f77d4b73
JA
620static int fio_net_queue_quit(void)
621{
622 dprint(FD_NET, "server: sending quit\n");
623
b647a293 624 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, NULL, SK_F_SIMPLE);
f77d4b73
JA
625}
626
122c7725 627int fio_net_send_quit(int sk)
437377e1 628{
46c48f1f 629 dprint(FD_NET, "server: sending quit\n");
122c7725 630
8c95307b 631 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
437377e1
JA
632}
633
f77d4b73 634static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
132159a5 635{
11e950bd 636 struct cmd_end_pdu epdu;
f58bd2a4 637 uint64_t tag = 0;
122c7725 638
f58bd2a4
JA
639 if (cmd)
640 tag = cmd->tag;
122c7725
JA
641
642 epdu.error = __cpu_to_le32(error);
643 epdu.signal = __cpu_to_le32(signal);
b647a293 644 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
f58bd2a4
JA
645}
646
f77d4b73 647static int fio_net_queue_stop(int error, int signal)
f58bd2a4
JA
648{
649 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
f77d4b73 650 return fio_net_send_ack(NULL, error, signal);
122c7725
JA
651}
652
653static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
654{
655 struct fio_fork_item *ffi;
656
657 ffi = malloc(sizeof(*ffi));
658 ffi->exitval = 0;
659 ffi->signal = 0;
660 ffi->exited = 0;
661 ffi->pid = pid;
662 flist_add_tail(&ffi->list, list);
663}
664
6348b5de 665static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
122c7725 666{
a7533dbd 667 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
6348b5de 668 fio_server_add_fork_item(pid, conn_list);
122c7725
JA
669}
670
6348b5de 671static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
122c7725 672{
a7533dbd 673 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
6348b5de 674 fio_server_add_fork_item(pid, job_list);
122c7725
JA
675}
676
677static void fio_server_check_fork_item(struct fio_fork_item *ffi)
678{
679 int ret, status;
680
681 ret = waitpid(ffi->pid, &status, WNOHANG);
682 if (ret < 0) {
683 if (errno == ECHILD) {
a7533dbd 684 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
122c7725
JA
685 ffi->exited = 1;
686 } else
687 log_err("fio: waitpid: %s\n", strerror(errno));
688 } else if (ret == ffi->pid) {
689 if (WIFSIGNALED(status)) {
690 ffi->signal = WTERMSIG(status);
691 ffi->exited = 1;
692 }
693 if (WIFEXITED(status)) {
694 if (WEXITSTATUS(status))
695 ffi->exitval = WEXITSTATUS(status);
696 ffi->exited = 1;
697 }
698 }
699}
700
f77d4b73 701static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
122c7725 702{
a7533dbd 703 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
122c7725
JA
704
705 /*
706 * Fold STOP and QUIT...
707 */
f77d4b73
JA
708 if (stop) {
709 fio_net_queue_stop(ffi->exitval, ffi->signal);
710 fio_net_queue_quit();
711 }
712
122c7725
JA
713 flist_del(&ffi->list);
714 free(ffi);
715}
716
f77d4b73 717static void fio_server_check_fork_items(struct flist_head *list, bool stop)
122c7725
JA
718{
719 struct flist_head *entry, *tmp;
720 struct fio_fork_item *ffi;
721
722 flist_for_each_safe(entry, tmp, list) {
723 ffi = flist_entry(entry, struct fio_fork_item, list);
724
725 fio_server_check_fork_item(ffi);
726
727 if (ffi->exited)
f77d4b73 728 fio_server_fork_item_done(ffi, stop);
122c7725
JA
729 }
730}
731
6348b5de 732static void fio_server_check_jobs(struct flist_head *job_list)
122c7725 733{
f77d4b73 734 fio_server_check_fork_items(job_list, true);
122c7725
JA
735}
736
6348b5de 737static void fio_server_check_conns(struct flist_head *conn_list)
122c7725 738{
f77d4b73 739 fio_server_check_fork_items(conn_list, false);
122c7725
JA
740}
741
323255cc
JA
742static int handle_load_file_cmd(struct fio_net_cmd *cmd)
743{
744 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
745 void *file_name = pdu->file;
746 struct cmd_start_pdu spdu;
747
748 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
749
750 pdu->name_len = le16_to_cpu(pdu->name_len);
751 pdu->client_type = le16_to_cpu(pdu->client_type);
752
753 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
f77d4b73 754 fio_net_queue_quit();
323255cc
JA
755 return -1;
756 }
757
758 spdu.jobs = cpu_to_le32(thread_number);
759 spdu.stat_outputs = cpu_to_le32(stat_number);
f77d4b73 760 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
323255cc
JA
761 return 0;
762}
763
f77d4b73
JA
764static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
765 struct fio_net_cmd *cmd)
122c7725
JA
766{
767 pid_t pid;
a64e88da 768 int ret;
132159a5 769
c0d3245a
JA
770 sk_out_assign(sk_out);
771
cbb1303c 772 fio_time_init();
122c7725 773 set_genesis_time();
11e950bd 774
122c7725
JA
775 pid = fork();
776 if (pid) {
6348b5de 777 fio_server_add_job_pid(job_list, pid);
122c7725
JA
778 return 0;
779 }
11e950bd 780
24660963 781 ret = fio_backend(sk_out);
2bb3f0a7 782 free_threads_shm();
c0d3245a 783 sk_out_drop();
122c7725 784 _exit(ret);
81179eec
JA
785}
786
b9d2f30a
JA
787static int handle_job_cmd(struct fio_net_cmd *cmd)
788{
46bcd498
JA
789 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
790 void *buf = pdu->buf;
b9d2f30a
JA
791 struct cmd_start_pdu spdu;
792
46bcd498
JA
793 pdu->buf_len = le32_to_cpu(pdu->buf_len);
794 pdu->client_type = le32_to_cpu(pdu->client_type);
795
796 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
f77d4b73 797 fio_net_queue_quit();
b9d2f30a
JA
798 return -1;
799 }
800
801 spdu.jobs = cpu_to_le32(thread_number);
108fea77 802 spdu.stat_outputs = cpu_to_le32(stat_number);
f77d4b73
JA
803
804 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
b9d2f30a
JA
805 return 0;
806}
807
81179eec
JA
808static int handle_jobline_cmd(struct fio_net_cmd *cmd)
809{
fa2ea806
JA
810 void *pdu = cmd->payload;
811 struct cmd_single_line_pdu *cslp;
812 struct cmd_line_pdu *clp;
813 unsigned long offset;
b9d2f30a 814 struct cmd_start_pdu spdu;
fa2ea806 815 char **argv;
b9d2f30a 816 int i;
81179eec 817
fa2ea806
JA
818 clp = pdu;
819 clp->lines = le16_to_cpu(clp->lines);
46bcd498 820 clp->client_type = le16_to_cpu(clp->client_type);
fa2ea806
JA
821 argv = malloc(clp->lines * sizeof(char *));
822 offset = sizeof(*clp);
81179eec 823
fa2ea806 824 dprint(FD_NET, "server: %d command line args\n", clp->lines);
39e8e016 825
fa2ea806
JA
826 for (i = 0; i < clp->lines; i++) {
827 cslp = pdu + offset;
828 argv[i] = (char *) cslp->text;
829
830 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
39e8e016
JA
831 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
832 }
81179eec 833
46bcd498 834 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
f77d4b73 835 fio_net_queue_quit();
fa2ea806 836 free(argv);
81179eec 837 return -1;
e6d1c668 838 }
81179eec 839
fa2ea806
JA
840 free(argv);
841
b9d2f30a 842 spdu.jobs = cpu_to_le32(thread_number);
1e5324e7 843 spdu.stat_outputs = cpu_to_le32(stat_number);
f77d4b73
JA
844
845 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
b9d2f30a 846 return 0;
132159a5
JA
847}
848
c28e8e8c
JA
849static int handle_probe_cmd(struct fio_net_cmd *cmd)
850{
3989b143 851 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
40c60516 852 uint64_t tag = cmd->tag;
f4937575
JA
853 struct cmd_probe_reply_pdu probe = {
854#ifdef CONFIG_BIG_ENDIAN
855 .bigendian = 1,
856#endif
857 .os = FIO_OS,
858 .arch = FIO_ARCH,
859 .bpp = sizeof(void *),
860 .cpus = __cpu_to_le32(cpus_online()),
861 };
c28e8e8c 862
89c1707c
JA
863 dprint(FD_NET, "server: sending probe reply\n");
864
ca09be4b
JA
865 strcpy(me, (char *) pdu->server);
866
c28e8e8c 867 gethostname((char *) probe.hostname, sizeof(probe.hostname));
13a85be9 868 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version) - 1);
c28e8e8c 869
3989b143
JA
870 /*
871 * If the client supports compression and we do too, then enable it
872 */
873 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
874 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
875 use_zlib = 1;
876 } else {
877 probe.flags = 0;
878 use_zlib = 0;
879 }
38fdef22 880
f77d4b73 881 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
af9c9fb3
JA
882}
883
884static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
885{
886 struct jobs_eta *je;
40c60516 887 uint64_t tag = cmd->tag;
723297c9 888 size_t size;
af9c9fb3
JA
889 int i;
890
e123c833
JA
891 dprint(FD_NET, "server sending status\n");
892
893 /*
894 * Fake ETA return if we don't have a local one, otherwise the client
895 * will end up timing out waiting for a response to the ETA request
896 */
c5103619 897 je = get_jobs_eta(true, &size);
b2bee93a
JA
898 if (!je) {
899 size = sizeof(*je);
900 je = calloc(1, size);
901 } else {
e123c833
JA
902 je->nr_running = cpu_to_le32(je->nr_running);
903 je->nr_ramp = cpu_to_le32(je->nr_ramp);
904 je->nr_pending = cpu_to_le32(je->nr_pending);
905 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
906 je->files_open = cpu_to_le32(je->files_open);
907
908 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
90eff1c9
SW
909 je->m_rate[i] = cpu_to_le64(je->m_rate[i]);
910 je->t_rate[i] = cpu_to_le64(je->t_rate[i]);
e123c833
JA
911 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
912 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
90eff1c9 913 je->rate[i] = cpu_to_le64(je->rate[i]);
e123c833
JA
914 je->iops[i] = cpu_to_le32(je->iops[i]);
915 }
af9c9fb3 916
e123c833
JA
917 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
918 je->eta_sec = cpu_to_le64(je->eta_sec);
919 je->nr_threads = cpu_to_le32(je->nr_threads);
920 je->is_pow2 = cpu_to_le32(je->is_pow2);
921 je->unit_base = cpu_to_le32(je->unit_base);
af9c9fb3
JA
922 }
923
f77d4b73 924 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
af9c9fb3 925 return 0;
c28e8e8c
JA
926}
927
f77d4b73 928static int send_update_job_reply(uint64_t __tag, int error)
40c60516
JA
929{
930 uint64_t tag = __tag;
931 uint32_t pdu_error;
932
933 pdu_error = __cpu_to_le32(error);
f77d4b73 934 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
40c60516
JA
935}
936
f58bd2a4
JA
937static int handle_update_job_cmd(struct fio_net_cmd *cmd)
938{
939 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
940 struct thread_data *td;
941 uint32_t tnumber;
942
943 tnumber = le32_to_cpu(pdu->thread_number);
944
945 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
946
30ffacbf 947 if (!tnumber || tnumber > thread_number) {
f77d4b73 948 send_update_job_reply(cmd->tag, ENODEV);
f58bd2a4
JA
949 return 0;
950 }
951
30ffacbf 952 td = &threads[tnumber - 1];
f58bd2a4 953 convert_thread_options_to_cpu(&td->o, &pdu->top);
f77d4b73 954 send_update_job_reply(cmd->tag, 0);
f58bd2a4
JA
955 return 0;
956}
957
785a0e21 958static int handle_trigger_cmd(struct fio_net_cmd *cmd, struct flist_head *job_list)
ca09be4b
JA
959{
960 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
961 char *buf = (char *) pdu->cmd;
962 struct all_io_list *rep;
963 size_t sz;
964
965 pdu->len = le16_to_cpu(pdu->len);
966 buf[pdu->len] = '\0';
967
968 rep = get_all_io_list(IO_LIST_ALL, &sz);
969 if (!rep) {
970 struct all_io_list state;
971
972 state.threads = cpu_to_le64((uint64_t) 0);
a89c77ab 973 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY | SK_F_INLINE);
f77d4b73 974 } else
a89c77ab 975 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE | SK_F_INLINE);
ca09be4b 976
98413be7 977 fio_terminate_threads(TERMINATE_ALL);
785a0e21 978 fio_server_check_jobs(job_list);
ca09be4b
JA
979 exec_trigger(buf);
980 return 0;
981}
982
f77d4b73
JA
983static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
984 struct fio_net_cmd *cmd)
132159a5
JA
985{
986 int ret;
987
4b91ee8f
JA
988 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
989 fio_server_op(cmd->opcode), cmd->pdu_len,
990 (unsigned long long) cmd->tag);
46c48f1f 991
132159a5
JA
992 switch (cmd->opcode) {
993 case FIO_NET_CMD_QUIT:
cc0df00a 994 fio_terminate_threads(TERMINATE_ALL);
f77d4b73
JA
995 ret = 0;
996 break;
d7959186 997 case FIO_NET_CMD_EXIT:
f1867a7f 998 exit_backend = true;
c28e8e8c 999 return -1;
323255cc
JA
1000 case FIO_NET_CMD_LOAD_FILE:
1001 ret = handle_load_file_cmd(cmd);
1002 break;
132159a5 1003 case FIO_NET_CMD_JOB:
0b8f30a5 1004 ret = handle_job_cmd(cmd);
132159a5 1005 break;
81179eec
JA
1006 case FIO_NET_CMD_JOBLINE:
1007 ret = handle_jobline_cmd(cmd);
1008 break;
c28e8e8c
JA
1009 case FIO_NET_CMD_PROBE:
1010 ret = handle_probe_cmd(cmd);
1011 break;
af9c9fb3
JA
1012 case FIO_NET_CMD_SEND_ETA:
1013 ret = handle_send_eta_cmd(cmd);
1014 break;
b9d2f30a 1015 case FIO_NET_CMD_RUN:
f77d4b73 1016 ret = handle_run_cmd(sk_out, job_list, cmd);
b9d2f30a 1017 break;
f58bd2a4
JA
1018 case FIO_NET_CMD_UPDATE_JOB:
1019 ret = handle_update_job_cmd(cmd);
1020 break;
ca09be4b 1021 case FIO_NET_CMD_VTRIGGER:
785a0e21 1022 ret = handle_trigger_cmd(cmd, job_list);
ca09be4b
JA
1023 break;
1024 case FIO_NET_CMD_SENDFILE: {
1025 struct cmd_sendfile_reply *in;
1026 struct cmd_reply *rep;
1027
1028 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
1029
1030 in = (struct cmd_sendfile_reply *) cmd->payload;
1031 in->size = le32_to_cpu(in->size);
1032 in->error = le32_to_cpu(in->error);
1033 if (in->error) {
1034 ret = 1;
1035 rep->error = in->error;
1036 } else {
1037 ret = 0;
1038 rep->data = smalloc(in->size);
1039 if (!rep->data) {
1040 ret = 1;
1041 rep->error = ENOMEM;
1042 } else {
1043 rep->size = in->size;
1044 memcpy(rep->data, in->data, in->size);
1045 }
1046 }
971caeb1 1047 fio_sem_up(&rep->lock);
ca09be4b
JA
1048 break;
1049 }
132159a5 1050 default:
3c3ed070 1051 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
132159a5
JA
1052 ret = 1;
1053 }
1054
1055 return ret;
1056}
1057
02594e37
JA
1058/*
1059 * Send a command with a separate PDU, not inlined in the command
1060 */
1061static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1062 off_t size, uint64_t tag, uint32_t flags)
1063{
1064 struct fio_net_cmd cmd;
1065 struct iovec iov[2];
7c922795
JA
1066 size_t this_len;
1067 int ret;
02594e37
JA
1068
1069 iov[0].iov_base = (void *) &cmd;
1070 iov[0].iov_len = sizeof(cmd);
02594e37 1071
7c922795
JA
1072 do {
1073 uint32_t this_flags = flags;
1074
1075 this_len = size;
1076 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
1077 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
1078
1079 if (this_len < size)
1080 this_flags |= FIO_NET_CMD_F_MORE;
1081
1082 __fio_init_net_cmd(&cmd, opcode, this_len, tag);
1083 cmd.flags = __cpu_to_le32(this_flags);
1084 fio_net_cmd_crc_pdu(&cmd, buf);
02594e37 1085
7c922795
JA
1086 iov[1].iov_base = (void *) buf;
1087 iov[1].iov_len = this_len;
1088
1089 ret = fio_sendv_data(sk, iov, 2);
1090 size -= this_len;
1091 buf += this_len;
1092 } while (!ret && size);
1093
1094 return ret;
02594e37
JA
1095}
1096
1097static void finish_entry(struct sk_entry *entry)
1098{
1099 if (entry->flags & SK_F_FREE)
1100 free(entry->buf);
1101 else if (entry->flags & SK_F_COPY)
1102 sfree(entry->buf);
1103
1104 sfree(entry);
1105}
1106
ba1891d2
JA
1107static void entry_set_flags(struct sk_entry *entry, struct flist_head *list,
1108 unsigned int *flags)
02594e37 1109{
b3882320
JA
1110 if (!flist_empty(list))
1111 *flags = FIO_NET_CMD_F_MORE;
02594e37 1112 else
b3882320 1113 *flags = 0;
b3882320 1114}
02594e37 1115
b3882320
JA
1116static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1117{
1118 unsigned int flags;
b3882320
JA
1119 int ret;
1120
ba1891d2 1121 entry_set_flags(first, &first->next, &flags);
b3882320 1122
ba1891d2
JA
1123 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf,
1124 first->size, first->tag, flags);
02594e37
JA
1125
1126 while (!flist_empty(&first->next)) {
1127 struct sk_entry *next;
1128
1129 next = flist_first_entry(&first->next, struct sk_entry, list);
1130 flist_del_init(&next->list);
02594e37 1131
ba1891d2 1132 entry_set_flags(next, &first->next, &flags);
02594e37 1133
ba1891d2
JA
1134 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf,
1135 next->size, next->tag, flags);
02594e37
JA
1136 finish_entry(next);
1137 }
b3882320
JA
1138
1139 return ret;
02594e37
JA
1140}
1141
b3882320 1142static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
f77d4b73 1143{
b3882320
JA
1144 int ret;
1145
971caeb1 1146 fio_sem_down(&sk_out->xmit);
bead01d7 1147
02594e37 1148 if (entry->flags & SK_F_VEC)
b3882320 1149 ret = send_vec_entry(sk_out, entry);
bead01d7 1150 else if (entry->flags & SK_F_SIMPLE) {
ba1891d2
JA
1151 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode,
1152 entry->tag, NULL);
dfc8e76c
JA
1153 } else {
1154 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf,
28c7bcdf 1155 entry->size, &entry->tag, NULL);
dfc8e76c 1156 }
b3882320 1157
971caeb1 1158 fio_sem_up(&sk_out->xmit);
bead01d7 1159
b3882320
JA
1160 if (ret)
1161 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
f77d4b73 1162
02594e37 1163 finish_entry(entry);
b3882320 1164 return ret;
f77d4b73
JA
1165}
1166
b3882320 1167static int handle_xmits(struct sk_out *sk_out)
f77d4b73
JA
1168{
1169 struct sk_entry *entry;
1170 FLIST_HEAD(list);
b3882320 1171 int ret = 0;
f77d4b73
JA
1172
1173 sk_lock(sk_out);
1174 if (flist_empty(&sk_out->list)) {
1175 sk_unlock(sk_out);
b3882320 1176 return 0;
f77d4b73
JA
1177 }
1178
1179 flist_splice_init(&sk_out->list, &list);
1180 sk_unlock(sk_out);
1181
1182 while (!flist_empty(&list)) {
1183 entry = flist_entry(list.next, struct sk_entry, list);
1184 flist_del(&entry->list);
b3882320 1185 ret += handle_sk_entry(sk_out, entry);
f77d4b73 1186 }
b3882320
JA
1187
1188 return ret;
f77d4b73
JA
1189}
1190
1191static int handle_connection(struct sk_out *sk_out)
132159a5
JA
1192{
1193 struct fio_net_cmd *cmd = NULL;
6348b5de 1194 FLIST_HEAD(job_list);
132159a5
JA
1195 int ret = 0;
1196
122c7725 1197 reset_fio_state();
122c7725 1198
132159a5
JA
1199 /* read forever */
1200 while (!exit_backend) {
e951bdc4 1201 struct pollfd pfd = {
f77d4b73 1202 .fd = sk_out->sk,
e951bdc4
JA
1203 .events = POLLIN,
1204 };
1205
e951bdc4 1206 do {
54163255
JA
1207 int timeout = 1000;
1208
1209 if (!flist_empty(&job_list))
1210 timeout = 100;
3c3ed070 1211
f77d4b73
JA
1212 handle_xmits(sk_out);
1213
1214 ret = poll(&pfd, 1, 0);
e951bdc4
JA
1215 if (ret < 0) {
1216 if (errno == EINTR)
1217 break;
1218 log_err("fio: poll: %s\n", strerror(errno));
1219 break;
19c65179 1220 } else if (!ret) {
6348b5de 1221 fio_server_check_jobs(&job_list);
971caeb1 1222 fio_sem_down_timeout(&sk_out->wait, timeout);
e951bdc4 1223 continue;
19c65179 1224 }
e951bdc4
JA
1225
1226 if (pfd.revents & POLLIN)
1227 break;
1228 if (pfd.revents & (POLLERR|POLLHUP)) {
1229 ret = 1;
1230 break;
1231 }
19c65179 1232 } while (!exit_backend);
e951bdc4 1233
6348b5de 1234 fio_server_check_jobs(&job_list);
122c7725 1235
e951bdc4
JA
1236 if (ret < 0)
1237 break;
1238
54e62ad4 1239 cmd = fio_net_recv_cmd(sk_out->sk, true);
132159a5 1240 if (!cmd) {
c28e8e8c 1241 ret = -1;
132159a5
JA
1242 break;
1243 }
1244
f77d4b73 1245 ret = handle_command(sk_out, &job_list, cmd);
132159a5
JA
1246 if (ret)
1247 break;
1248
1249 free(cmd);
c77a99e7 1250 cmd = NULL;
132159a5
JA
1251 }
1252
1253 if (cmd)
1254 free(cmd);
1255
f77d4b73
JA
1256 handle_xmits(sk_out);
1257
1258 close(sk_out->sk);
0ae6acea 1259 sk_out->sk = -1;
bce503fc 1260 __sk_out_drop(sk_out);
122c7725 1261 _exit(ret);
cc0df00a
JA
1262}
1263
296ab20a
BE
1264/* get the address on this host bound by the input socket,
1265 * whether it is ipv6 or ipv4 */
1266
9d2c74d7 1267static int get_my_addr_str(int sk)
296ab20a 1268{
f77d4b73
JA
1269 struct sockaddr_in6 myaddr6 = { 0, };
1270 struct sockaddr_in myaddr4 = { 0, };
1271 struct sockaddr *sockaddr_p;
1272 char *net_addr;
1273 socklen_t len;
1274 int ret;
296ab20a 1275
f77d4b73
JA
1276 if (use_ipv6) {
1277 len = sizeof(myaddr6);
296ab20a 1278 sockaddr_p = (struct sockaddr * )&myaddr6;
f77d4b73
JA
1279 net_addr = (char * )&myaddr6.sin6_addr;
1280 } else {
1281 len = sizeof(myaddr4);
296ab20a 1282 sockaddr_p = (struct sockaddr * )&myaddr4;
f77d4b73
JA
1283 net_addr = (char * )&myaddr4.sin_addr;
1284 }
1285
296ab20a
BE
1286 ret = getsockname(sk, sockaddr_p, &len);
1287 if (ret) {
9af5a245 1288 log_err("fio: getsockname: %s\n", strerror(errno));
296ab20a
BE
1289 return -1;
1290 }
f77d4b73
JA
1291
1292 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
296ab20a 1293 log_err("inet_ntop: failed to convert addr to string\n");
296ab20a
BE
1294 return -1;
1295 }
f77d4b73 1296
296ab20a
BE
1297 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1298 return 0;
1299}
1300
ea1cd038 1301static int accept_loop(int listen_sk)
50d16976 1302{
bb447a27 1303 struct sockaddr_in addr;
479471c4
JA
1304 struct sockaddr_in6 addr6;
1305 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
009b1be4 1306 struct pollfd pfd;
4a851614 1307 int ret = 0, sk, exitval = 0;
6348b5de 1308 FLIST_HEAD(conn_list);
50d16976 1309
60efd14e
JA
1310 dprint(FD_NET, "server enter accept loop\n");
1311
4a851614 1312 fio_set_fd_nonblocking(listen_sk, "server");
009b1be4 1313
122c7725 1314 while (!exit_backend) {
ea1cd038 1315 struct sk_out *sk_out;
479471c4
JA
1316 const char *from;
1317 char buf[64];
122c7725 1318 pid_t pid;
009b1be4 1319
122c7725
JA
1320 pfd.fd = listen_sk;
1321 pfd.events = POLLIN;
1322 do {
54163255
JA
1323 int timeout = 1000;
1324
1325 if (!flist_empty(&conn_list))
1326 timeout = 100;
1327
1328 ret = poll(&pfd, 1, timeout);
122c7725
JA
1329 if (ret < 0) {
1330 if (errno == EINTR)
1331 break;
1332 log_err("fio: poll: %s\n", strerror(errno));
1333 break;
1334 } else if (!ret) {
6348b5de 1335 fio_server_check_conns(&conn_list);
122c7725
JA
1336 continue;
1337 }
009b1be4 1338
122c7725
JA
1339 if (pfd.revents & POLLIN)
1340 break;
1341 } while (!exit_backend);
50d16976 1342
6348b5de 1343 fio_server_check_conns(&conn_list);
46c48f1f 1344
122c7725
JA
1345 if (exit_backend || ret < 0)
1346 break;
1347
479471c4
JA
1348 if (use_ipv6)
1349 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1350 else
1351 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1352
122c7725
JA
1353 if (sk < 0) {
1354 log_err("fio: accept: %s\n", strerror(errno));
1355 return -1;
1356 }
37db14fe 1357
479471c4
JA
1358 if (use_ipv6)
1359 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1360 else
1361 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1362
1363 dprint(FD_NET, "server: connect from %s\n", from);
50d16976 1364
87c6f22b 1365 sk_out = scalloc(1, sizeof(*sk_out));
e3500d99
JA
1366 if (!sk_out) {
1367 close(sk);
1368 return -1;
1369 }
1370
f77d4b73 1371 sk_out->sk = sk;
bce503fc 1372 INIT_FLIST_HEAD(&sk_out->list);
971caeb1
BVA
1373 __fio_sem_init(&sk_out->lock, FIO_SEM_UNLOCKED);
1374 __fio_sem_init(&sk_out->wait, FIO_SEM_LOCKED);
1375 __fio_sem_init(&sk_out->xmit, FIO_SEM_UNLOCKED);
f77d4b73 1376
122c7725
JA
1377 pid = fork();
1378 if (pid) {
1379 close(sk);
6348b5de 1380 fio_server_add_conn_pid(&conn_list, pid);
122c7725
JA
1381 continue;
1382 }
5c341e9a 1383
0ae6acea
JA
1384 /* if error, it's already logged, non-fatal */
1385 get_my_addr_str(sk);
1386
1387 /*
1388 * Assign sk_out here, it'll be dropped in handle_connection()
1389 * since that function calls _exit() when done
1390 */
bce503fc 1391 sk_out_assign(sk_out);
f77d4b73 1392 handle_connection(sk_out);
122c7725 1393 }
5c341e9a 1394
132159a5 1395 return exitval;
50d16976
JA
1396}
1397
084d1c6f 1398int fio_server_text_output(int level, const char *buf, size_t len)
37db14fe 1399{
f77d4b73 1400 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
084d1c6f
JA
1401 struct cmd_text_pdu *pdu;
1402 unsigned int tlen;
1403 struct timeval tv;
1404
f77d4b73 1405 if (!sk_out || sk_out->sk == -1)
408e0b90 1406 return -1;
084d1c6f
JA
1407
1408 tlen = sizeof(*pdu) + len;
1409 pdu = malloc(tlen);
1410
1411 pdu->level = __cpu_to_le32(level);
1412 pdu->buf_len = __cpu_to_le32(len);
1413
1414 gettimeofday(&tv, NULL);
1415 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1416 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
337d75a8 1417
084d1c6f
JA
1418 memcpy(pdu->buf, buf, len);
1419
f77d4b73 1420 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
084d1c6f
JA
1421 free(pdu);
1422 return len;
142575e6
JA
1423}
1424
a64e88da
JA
1425static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1426{
1427 dst->max_val = cpu_to_le64(src->max_val);
1428 dst->min_val = cpu_to_le64(src->min_val);
1429 dst->samples = cpu_to_le64(src->samples);
802ad4a8
JA
1430
1431 /*
1432 * Encode to IEEE 754 for network transfer
1433 */
e5c9093d
JA
1434 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1435 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
a64e88da
JA
1436}
1437
1438static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1439{
1440 int i;
1441
298921d6 1442 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
1443 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1444 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1445 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1446 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
af7f87cb 1447 dst->iobytes[i] = cpu_to_le64(src->iobytes[i]);
a64e88da
JA
1448 dst->agg[i] = cpu_to_le64(src->agg[i]);
1449 }
1450
1451 dst->kb_base = cpu_to_le32(src->kb_base);
ad705bcb 1452 dst->unit_base = cpu_to_le32(src->unit_base);
a64e88da 1453 dst->groupid = cpu_to_le32(src->groupid);
771e58be 1454 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
18aa1998 1455 dst->sig_figs = cpu_to_le32(src->sig_figs);
a64e88da
JA
1456}
1457
1458/*
1459 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1460 * into a single payload.
1461 */
1462void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1463{
1464 struct cmd_ts_pdu p;
1465 int i, j;
bb49c8bd
VF
1466 void *ss_buf;
1467 uint64_t *ss_iops, *ss_bw;
a64e88da 1468
60efd14e
JA
1469 dprint(FD_NET, "server sending end stats\n");
1470
317b3c8b
JA
1471 memset(&p, 0, sizeof(p));
1472
4e59d0f3
JA
1473 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1474 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1475 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
a64e88da 1476
2f122b13
JA
1477 p.ts.error = cpu_to_le32(ts->error);
1478 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1479 p.ts.groupid = cpu_to_le32(ts->groupid);
1480 p.ts.pid = cpu_to_le32(ts->pid);
1481 p.ts.members = cpu_to_le32(ts->members);
771e58be 1482 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
a64e88da 1483
298921d6 1484 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
1485 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1486 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1487 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1488 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
188b6016 1489 convert_io_stat(&p.ts.iops_stat[i], &ts->iops_stat[i]);
a64e88da
JA
1490 }
1491
1492 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1493 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1494 p.ts.ctx = cpu_to_le64(ts->ctx);
1495 p.ts.minf = cpu_to_le64(ts->minf);
1496 p.ts.majf = cpu_to_le64(ts->majf);
b599759b
JA
1497 p.ts.clat_percentiles = cpu_to_le32(ts->clat_percentiles);
1498 p.ts.lat_percentiles = cpu_to_le32(ts->lat_percentiles);
988d97ba 1499 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
802ad4a8
JA
1500
1501 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
cfc03e46
JA
1502 fio_fp64_t *src = &ts->percentile_list[i];
1503 fio_fp64_t *dst = &p.ts.percentile_list[i];
802ad4a8 1504
e5c9093d 1505 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
802ad4a8 1506 }
a64e88da
JA
1507
1508 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
6cc0e5aa
AL
1509 p.ts.io_u_map[i] = cpu_to_le64(ts->io_u_map[i]);
1510 p.ts.io_u_submit[i] = cpu_to_le64(ts->io_u_submit[i]);
1511 p.ts.io_u_complete[i] = cpu_to_le64(ts->io_u_complete[i]);
a64e88da
JA
1512 }
1513
d6bb626e 1514 for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
6cc0e5aa 1515 p.ts.io_u_lat_n[i] = cpu_to_le64(ts->io_u_lat_n[i]);
d279fccc 1516 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
6cc0e5aa 1517 p.ts.io_u_lat_u[i] = cpu_to_le64(ts->io_u_lat_u[i]);
d279fccc 1518 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
6cc0e5aa 1519 p.ts.io_u_lat_m[i] = cpu_to_le64(ts->io_u_lat_m[i]);
a64e88da 1520
298921d6 1521 for (i = 0; i < DDIR_RWDIR_CNT; i++)
a64e88da 1522 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
6cc0e5aa 1523 p.ts.io_u_plat[i][j] = cpu_to_le64(ts->io_u_plat[i][j]);
a64e88da 1524
78799deb 1525 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da 1526 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
93eee04a 1527 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
3bcb9d94 1528 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
a64e88da
JA
1529 }
1530
93eee04a 1531 p.ts.total_submit = cpu_to_le64(ts->total_submit);
a64e88da 1532 p.ts.total_complete = cpu_to_le64(ts->total_complete);
a5951dd7 1533 p.ts.nr_zone_resets = cpu_to_le64(ts->nr_zone_resets);
a64e88da 1534
298921d6 1535 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
1536 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1537 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1538 }
1539
1540 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1541 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1542 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
ddcc0b69
JA
1543 p.ts.first_error = cpu_to_le32(ts->first_error);
1544 p.ts.kb_base = cpu_to_le32(ts->kb_base);
ad705bcb 1545 p.ts.unit_base = cpu_to_le32(ts->unit_base);
a64e88da 1546
3e260a46
JA
1547 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1548 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1549 p.ts.latency_window = cpu_to_le64(ts->latency_window);
e5c9093d 1550 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
3e260a46 1551
e883cb35
JF
1552 p.ts.sig_figs = cpu_to_le32(ts->sig_figs);
1553
6cd44635 1554 p.ts.nr_block_infos = cpu_to_le64(ts->nr_block_infos);
66347cfa 1555 for (i = 0; i < p.ts.nr_block_infos; i++)
6cd44635 1556 p.ts.block_infos[i] = cpu_to_le32(ts->block_infos[i]);
66347cfa 1557
bb49c8bd
VF
1558 p.ts.ss_dur = cpu_to_le64(ts->ss_dur);
1559 p.ts.ss_state = cpu_to_le32(ts->ss_state);
1560 p.ts.ss_head = cpu_to_le32(ts->ss_head);
bb49c8bd
VF
1561 p.ts.ss_limit.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_limit.u.f));
1562 p.ts.ss_slope.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_slope.u.f));
1563 p.ts.ss_deviation.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_deviation.u.f));
1564 p.ts.ss_criterion.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_criterion.u.f));
1565
96563db9
JA
1566 p.ts.cachehit = cpu_to_le64(ts->cachehit);
1567 p.ts.cachemiss = cpu_to_le64(ts->cachemiss);
1568
a64e88da
JA
1569 convert_gs(&p.rs, rs);
1570
bb49c8bd 1571 dprint(FD_NET, "ts->ss_state = %d\n", ts->ss_state);
c8caba48 1572 if (ts->ss_state & FIO_SS_DATA) {
bb49c8bd
VF
1573 dprint(FD_NET, "server sending steadystate ring buffers\n");
1574
1575 ss_buf = malloc(sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t));
1576
1577 memcpy(ss_buf, &p, sizeof(p));
1578
1579 ss_iops = (uint64_t *) ((struct cmd_ts_pdu *)ss_buf + 1);
1580 ss_bw = ss_iops + (int) ts->ss_dur;
1581 for (i = 0; i < ts->ss_dur; i++) {
1582 ss_iops[i] = cpu_to_le64(ts->ss_iops_data[i]);
1583 ss_bw[i] = cpu_to_le64(ts->ss_bw_data[i]);
1584 }
1585
1586 fio_net_queue_cmd(FIO_NET_CMD_TS, ss_buf, sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t), NULL, SK_F_COPY);
1587
1588 free(ss_buf);
1589 }
1590 else
1591 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
a64e88da
JA
1592}
1593
1594void fio_server_send_gs(struct group_run_stats *rs)
1595{
1596 struct group_run_stats gs;
1597
60efd14e
JA
1598 dprint(FD_NET, "server sending group run stats\n");
1599
a64e88da 1600 convert_gs(&gs, rs);
f77d4b73 1601 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
cf451d1e
JA
1602}
1603
0279b880 1604void fio_server_send_job_options(struct flist_head *opt_list,
a43f4461 1605 unsigned int gid)
0279b880
JA
1606{
1607 struct cmd_job_option pdu;
1608 struct flist_head *entry;
1609
1610 if (flist_empty(opt_list))
1611 return;
1612
1613 flist_for_each(entry, opt_list) {
1614 struct print_option *p;
bc0fec0e 1615 size_t len;
0279b880
JA
1616
1617 p = flist_entry(entry, struct print_option, list);
1618 memset(&pdu, 0, sizeof(pdu));
bc0fec0e 1619
a43f4461 1620 if (gid == -1U) {
0279b880
JA
1621 pdu.global = __cpu_to_le16(1);
1622 pdu.groupid = 0;
1623 } else {
1624 pdu.global = 0;
a43f4461 1625 pdu.groupid = cpu_to_le32(gid);
bc0fec0e
JA
1626 }
1627 len = strlen(p->name);
1628 if (len >= sizeof(pdu.name)) {
1629 len = sizeof(pdu.name) - 1;
1630 pdu.truncated = __cpu_to_le16(1);
1631 }
1632 memcpy(pdu.name, p->name, len);
1633 if (p->value) {
1634 len = strlen(p->value);
1635 if (len >= sizeof(pdu.value)) {
1636 len = sizeof(pdu.value) - 1;
1637 pdu.truncated = __cpu_to_le16(1);
1638 }
1639 memcpy(pdu.value, p->value, len);
0279b880 1640 }
0279b880
JA
1641 fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1642 }
1643}
1644
d09a64a0
JA
1645static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1646{
1647 int i;
1648
1649 for (i = 0; i < 2; i++) {
504bc961
JA
1650 dst->ios[i] = cpu_to_le64(src->ios[i]);
1651 dst->merges[i] = cpu_to_le64(src->merges[i]);
d09a64a0 1652 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
504bc961 1653 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
d09a64a0
JA
1654 }
1655
504bc961
JA
1656 dst->io_ticks = cpu_to_le64(src->io_ticks);
1657 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
d09a64a0 1658 dst->slavecount = cpu_to_le32(src->slavecount);
e5c9093d 1659 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
d09a64a0
JA
1660}
1661
1662static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1663{
1664 int i;
1665
59140421
JA
1666 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1667 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
d09a64a0
JA
1668
1669 for (i = 0; i < 2; i++) {
504bc961
JA
1670 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1671 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
a3b4cf7d 1672 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
504bc961 1673 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
d09a64a0
JA
1674 }
1675
504bc961
JA
1676 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1677 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
a3b4cf7d 1678 dst->s.msec = cpu_to_le64(src->s.msec);
d09a64a0
JA
1679}
1680
1681void fio_server_send_du(void)
1682{
1683 struct disk_util *du;
1684 struct flist_head *entry;
1685 struct cmd_du_pdu pdu;
1686
1687 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1688
0766d92e
JA
1689 memset(&pdu, 0, sizeof(pdu));
1690
d09a64a0
JA
1691 flist_for_each(entry, &disk_list) {
1692 du = flist_entry(entry, struct disk_util, list);
1693
1694 convert_dus(&pdu.dus, &du->dus);
1695 convert_agg(&pdu.agg, &du->agg);
1696
f77d4b73 1697 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
d09a64a0
JA
1698 }
1699}
1700
3989b143 1701#ifdef CONFIG_ZLIB
868f6f03
KC
1702
1703static inline void __fio_net_prep_tail(z_stream *stream, void *out_pdu,
1704 struct sk_entry **last_entry,
1705 struct sk_entry *first)
1706{
1707 unsigned int this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
1708
1709 *last_entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1710 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1620bb93
JA
1711 if (*last_entry)
1712 flist_add_tail(&(*last_entry)->list, &first->next);
868f6f03
KC
1713}
1714
1715/*
1716 * Deflates the next input given, creating as many new packets in the
1717 * linked list as necessary.
1718 */
1719static int __deflate_pdu_buffer(void *next_in, unsigned int next_sz, void **out_pdu,
1720 struct sk_entry **last_entry, z_stream *stream,
1721 struct sk_entry *first)
1722{
1723 int ret;
1724
1725 stream->next_in = next_in;
1726 stream->avail_in = next_sz;
1727 do {
1620bb93 1728 if (!stream->avail_out) {
868f6f03 1729 __fio_net_prep_tail(stream, *out_pdu, last_entry, first);
1620bb93
JA
1730 if (*last_entry == NULL)
1731 return 1;
868f6f03
KC
1732
1733 *out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1734
1735 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1736 stream->next_out = *out_pdu;
1737 }
1738
1739 ret = deflate(stream, Z_BLOCK);
1740
1741 if (ret < 0) {
1742 free(*out_pdu);
1743 return 1;
1744 }
1745 } while (stream->avail_in);
1746
1747 return 0;
1748}
1749
1750static int __fio_append_iolog_gz_hist(struct sk_entry *first, struct io_log *log,
1751 struct io_logs *cur_log, z_stream *stream)
1752{
1753 struct sk_entry *entry;
1754 void *out_pdu;
1755 int ret, i, j;
1756 int sample_sz = log_entry_sz(log);
1757
1758 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1759 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1760 stream->next_out = out_pdu;
1761
1762 for (i = 0; i < cur_log->nr_samples; i++) {
1763 struct io_sample *s;
1764 struct io_u_plat_entry *cur_plat_entry, *prev_plat_entry;
6cc0e5aa 1765 uint64_t *cur_plat, *prev_plat;
868f6f03
KC
1766
1767 s = get_sample(log, cur_log, i);
1768 ret = __deflate_pdu_buffer(s, sample_sz, &out_pdu, &entry, stream, first);
1769 if (ret)
1770 return ret;
1771
1772 /* Do the subtraction on server side so that client doesn't have to
1773 * reconstruct our linked list from packets.
1774 */
af2fde19 1775 cur_plat_entry = s->data.plat_entry;
868f6f03
KC
1776 prev_plat_entry = flist_first_entry(&cur_plat_entry->list, struct io_u_plat_entry, list);
1777 cur_plat = cur_plat_entry->io_u_plat;
1778 prev_plat = prev_plat_entry->io_u_plat;
1779
1780 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) {
1781 cur_plat[j] -= prev_plat[j];
1782 }
1783
1784 flist_del(&prev_plat_entry->list);
1785 free(prev_plat_entry);
1786
1787 ret = __deflate_pdu_buffer(cur_plat_entry, sizeof(*cur_plat_entry),
1788 &out_pdu, &entry, stream, first);
1789
1790 if (ret)
1791 return ret;
1792 }
1793
1794 __fio_net_prep_tail(stream, out_pdu, &entry, first);
1620bb93 1795 return entry == NULL;
868f6f03
KC
1796}
1797
7e419452
JA
1798static int __fio_append_iolog_gz(struct sk_entry *first, struct io_log *log,
1799 struct io_logs *cur_log, z_stream *stream)
1800{
e35fb4c4 1801 unsigned int this_len;
1b42725f 1802 void *out_pdu;
7e419452 1803 int ret;
1b42725f 1804
868f6f03
KC
1805 if (log->log_type == IO_LOG_TYPE_HIST)
1806 return __fio_append_iolog_gz_hist(first, log, cur_log, stream);
1807
7e419452
JA
1808 stream->next_in = (void *) cur_log->log;
1809 stream->avail_in = cur_log->nr_samples * log_entry_sz(log);
1b42725f
JA
1810
1811 do {
e35fb4c4 1812 struct sk_entry *entry;
1b42725f 1813
7e419452
JA
1814 /*
1815 * Dirty - since the log is potentially huge, compress it into
1816 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1817 * side defragment it.
1818 */
1819 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1820
1821 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1822 stream->next_out = out_pdu;
e35fb4c4 1823 ret = deflate(stream, Z_BLOCK);
3c547fe0 1824 /* may be Z_OK, or Z_STREAM_END */
7e419452
JA
1825 if (ret < 0) {
1826 free(out_pdu);
1827 return 1;
1828 }
1b42725f 1829
7e419452 1830 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
1b42725f 1831
02594e37 1832 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
7e419452 1833 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1620bb93
JA
1834 if (!entry) {
1835 free(out_pdu);
1836 return 1;
1837 }
02594e37 1838 flist_add_tail(&entry->list, &first->next);
7e419452
JA
1839 } while (stream->avail_in);
1840
1841 return 0;
1842}
1843
1844static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
1845{
f4937575
JA
1846 z_stream stream = {
1847 .zalloc = Z_NULL,
1848 .zfree = Z_NULL,
1849 .opaque = Z_NULL,
1850 };
7e419452 1851 int ret = 0;
7e419452
JA
1852
1853 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK)
1854 return 1;
1855
1856 while (!flist_empty(&log->io_logs)) {
1857 struct io_logs *cur_log;
1858
1859 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1860 flist_del_init(&cur_log->list);
1861
1862 ret = __fio_append_iolog_gz(first, log, cur_log, &stream);
1863 if (ret)
1864 break;
1865 }
1b42725f 1866
e35fb4c4
JA
1867 ret = deflate(&stream, Z_FINISH);
1868
1869 while (ret != Z_STREAM_END) {
1870 struct sk_entry *entry;
1871 unsigned int this_len;
1872 void *out_pdu;
1873
1874 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1875 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1876 stream.next_out = out_pdu;
1877
1878 ret = deflate(&stream, Z_FINISH);
1879 /* may be Z_OK, or Z_STREAM_END */
1880 if (ret < 0) {
1881 free(out_pdu);
1882 break;
1883 }
1884
1885 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1886
1887 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1888 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1620bb93
JA
1889 if (!entry) {
1890 free(out_pdu);
1891 break;
1892 }
e35fb4c4
JA
1893 flist_add_tail(&entry->list, &first->next);
1894 } while (ret != Z_STREAM_END);
1895
1896 ret = deflateEnd(&stream);
1897 if (ret == Z_OK)
1898 return 0;
1899
1900 return 1;
1b42725f 1901}
7e419452
JA
1902#else
1903static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
1904{
1905 return 1;
1906}
1907#endif
1b42725f 1908
dfc8e76c 1909static int fio_append_gz_chunks(struct sk_entry *first, struct io_log *log)
0cba0f91
JA
1910{
1911 struct sk_entry *entry;
1912 struct flist_head *node;
1620bb93 1913 int ret = 0;
0cba0f91
JA
1914
1915 pthread_mutex_lock(&log->chunk_lock);
1916 flist_for_each(node, &log->chunk_list) {
1917 struct iolog_compress *c;
1918
1919 c = flist_entry(node, struct iolog_compress, list);
1920 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, c->buf, c->len,
1921 NULL, SK_F_VEC | SK_F_INLINE);
1620bb93
JA
1922 if (!entry) {
1923 ret = 1;
1924 break;
1925 }
0cba0f91
JA
1926 flist_add_tail(&entry->list, &first->next);
1927 }
1928 pthread_mutex_unlock(&log->chunk_lock);
1620bb93 1929 return ret;
0cba0f91
JA
1930}
1931
dfc8e76c
JA
1932static int fio_append_text_log(struct sk_entry *first, struct io_log *log)
1933{
1934 struct sk_entry *entry;
1620bb93 1935 int ret = 0;
dfc8e76c 1936
7e419452
JA
1937 while (!flist_empty(&log->io_logs)) {
1938 struct io_logs *cur_log;
1939 size_t size;
1940
1941 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1942 flist_del_init(&cur_log->list);
1943
1944 size = cur_log->nr_samples * log_entry_sz(log);
1945
1946 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, cur_log->log, size,
1947 NULL, SK_F_VEC | SK_F_INLINE);
1620bb93
JA
1948 if (!entry) {
1949 ret = 1;
1950 break;
1951 }
7e419452
JA
1952 flist_add_tail(&entry->list, &first->next);
1953 }
1954
1620bb93 1955 return ret;
dfc8e76c
JA
1956}
1957
3989b143
JA
1958int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1959{
f54ed522
JA
1960 struct cmd_iolog_pdu pdu = {
1961 .nr_samples = cpu_to_le64(iolog_nr_samples(log)),
1962 .thread_number = cpu_to_le32(td->thread_number),
1963 .log_type = cpu_to_le32(log->log_type),
1964 .log_hist_coarseness = cpu_to_le32(log->hist_coarseness),
1965 };
02594e37 1966 struct sk_entry *first;
7e419452
JA
1967 struct flist_head *entry;
1968 int ret = 0;
3989b143 1969
0cba0f91
JA
1970 if (!flist_empty(&log->chunk_list))
1971 pdu.compressed = __cpu_to_le32(STORE_COMPRESSED);
1972 else if (use_zlib)
1973 pdu.compressed = __cpu_to_le32(XMIT_COMPRESSED);
1974 else
1975 pdu.compressed = 0;
9bdb9265
JA
1976
1977 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1978 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
3989b143 1979
0cba0f91
JA
1980 /*
1981 * We can't do this for a pre-compressed log, but for that case,
1982 * log->nr_samples is zero anyway.
1983 */
7e419452
JA
1984 flist_for_each(entry, &log->io_logs) {
1985 struct io_logs *cur_log;
1986 int i;
3989b143 1987
7e419452 1988 cur_log = flist_entry(entry, struct io_logs, list);
ae588852 1989
7e419452
JA
1990 for (i = 0; i < cur_log->nr_samples; i++) {
1991 struct io_sample *s = get_sample(log, cur_log, i);
ae588852 1992
7e419452 1993 s->time = cpu_to_le64(s->time);
af2fde19 1994 s->data.val = cpu_to_le64(s->data.val);
7e419452 1995 s->__ddir = cpu_to_le32(s->__ddir);
5fff9543 1996 s->bs = cpu_to_le64(s->bs);
7e419452
JA
1997
1998 if (log->log_offset) {
1999 struct io_sample_offset *so = (void *) s;
2000
2001 so->offset = cpu_to_le64(so->offset);
2002 }
ae588852 2003 }
3989b143
JA
2004 }
2005
2006 /*
02594e37 2007 * Assemble header entry first
3989b143 2008 */
bead01d7 2009 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY);
1620bb93
JA
2010 if (!first)
2011 return 1;
3989b143
JA
2012
2013 /*
dfc8e76c
JA
2014 * Now append actual log entries. If log compression was enabled on
2015 * the job, just send out the compressed chunks directly. If we
2016 * have a plain log, compress if we can, then send. Otherwise, send
2017 * the plain text output.
3989b143 2018 */
0cba0f91 2019 if (!flist_empty(&log->chunk_list))
dfc8e76c 2020 ret = fio_append_gz_chunks(first, log);
0cba0f91 2021 else if (use_zlib)
dfc8e76c
JA
2022 ret = fio_append_iolog_gz(first, log);
2023 else
2024 ret = fio_append_text_log(first, log);
3989b143 2025
bead01d7 2026 fio_net_queue_entry(first);
f77d4b73 2027 return ret;
3989b143
JA
2028}
2029
2f122b13 2030void fio_server_send_add_job(struct thread_data *td)
807f9971 2031{
f4937575
JA
2032 struct cmd_add_job_pdu pdu = {
2033 .thread_number = cpu_to_le32(td->thread_number),
2034 .groupid = cpu_to_le32(td->groupid),
2035 };
807f9971 2036
2f122b13 2037 convert_thread_options_to_net(&pdu.top, &td->o);
807f9971 2038
dfc8e76c
JA
2039 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL,
2040 SK_F_COPY);
807f9971
JA
2041}
2042
122c7725
JA
2043void fio_server_send_start(struct thread_data *td)
2044{
f77d4b73
JA
2045 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2046
2047 assert(sk_out->sk != -1);
122c7725 2048
a89ba4b1 2049 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, NULL, SK_F_SIMPLE);
122c7725
JA
2050}
2051
ca09be4b 2052int fio_server_get_verify_state(const char *name, int threadnumber,
94a6e1bb 2053 void **datap)
ca09be4b
JA
2054{
2055 struct thread_io_list *s;
2056 struct cmd_sendfile out;
2057 struct cmd_reply *rep;
2058 uint64_t tag;
2059 void *data;
c0d3245a 2060 int ret;
ca09be4b
JA
2061
2062 dprint(FD_NET, "server: request verify state\n");
2063
2064 rep = smalloc(sizeof(*rep));
81b3c86f 2065 if (!rep)
c0d3245a 2066 return ENOMEM;
ca09be4b 2067
971caeb1 2068 __fio_sem_init(&rep->lock, FIO_SEM_LOCKED);
ca09be4b
JA
2069 rep->data = NULL;
2070 rep->error = 0;
2071
e499aedc
JA
2072 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
2073 threadnumber);
ca09be4b 2074 tag = (uint64_t) (uintptr_t) rep;
dfc8e76c
JA
2075 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag,
2076 SK_F_COPY);
ca09be4b
JA
2077
2078 /*
2079 * Wait for the backend to receive the reply
2080 */
971caeb1 2081 if (fio_sem_down_timeout(&rep->lock, 10000)) {
ca09be4b 2082 log_err("fio: timed out waiting for reply\n");
c0d3245a 2083 ret = ETIMEDOUT;
ca09be4b
JA
2084 goto fail;
2085 }
2086
2087 if (rep->error) {
415c3133
JA
2088 log_err("fio: failure on receiving state file %s: %s\n",
2089 out.path, strerror(rep->error));
c0d3245a 2090 ret = rep->error;
ca09be4b
JA
2091fail:
2092 *datap = NULL;
2093 sfree(rep);
f77d4b73 2094 fio_net_queue_quit();
c0d3245a 2095 return ret;
ca09be4b
JA
2096 }
2097
2098 /*
2099 * The format is verify_state_hdr, then thread_io_list. Verify
2100 * the header, and the thread_io_list checksum
2101 */
2102 s = rep->data + sizeof(struct verify_state_hdr);
94a6e1bb 2103 if (verify_state_hdr(rep->data, s)) {
c0d3245a 2104 ret = EILSEQ;
ca09be4b 2105 goto fail;
c0d3245a 2106 }
ca09be4b
JA
2107
2108 /*
2109 * Don't need the header from now, copy just the thread_io_list
2110 */
c0d3245a 2111 ret = 0;
ca09be4b
JA
2112 rep->size -= sizeof(struct verify_state_hdr);
2113 data = malloc(rep->size);
2114 memcpy(data, s, rep->size);
2115 *datap = data;
2116
2117 sfree(rep->data);
971caeb1 2118 __fio_sem_remove(&rep->lock);
ca09be4b 2119 sfree(rep);
c0d3245a 2120 return ret;
ca09be4b
JA
2121}
2122
87aa8f19 2123static int fio_init_server_ip(void)
81179eec 2124{
811826be 2125 struct sockaddr *addr;
67bf9823 2126 socklen_t socklen;
17e3531a
JA
2127 char buf[80];
2128 const char *str;
87aa8f19 2129 int sk, opt;
81179eec 2130
811826be
JA
2131 if (use_ipv6)
2132 sk = socket(AF_INET6, SOCK_STREAM, 0);
2133 else
2134 sk = socket(AF_INET, SOCK_STREAM, 0);
2135
81179eec
JA
2136 if (sk < 0) {
2137 log_err("fio: socket: %s\n", strerror(errno));
2138 return -1;
2139 }
2140
2141 opt = 1;
1f81991e 2142 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
669e8bf8 2143 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
b94cba47 2144 close(sk);
81179eec
JA
2145 return -1;
2146 }
2147#ifdef SO_REUSEPORT
8a768c2e
JA
2148 /*
2149 * Not fatal if fails, so just ignore it if that happens
2150 */
2151 setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt));
81179eec
JA
2152#endif
2153
811826be 2154 if (use_ipv6) {
a6ab5391 2155 void *src = &saddr_in6.sin6_addr;
17e3531a 2156
811826be
JA
2157 addr = (struct sockaddr *) &saddr_in6;
2158 socklen = sizeof(saddr_in6);
2159 saddr_in6.sin6_family = AF_INET6;
17e3531a 2160 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
811826be 2161 } else {
a6ab5391 2162 void *src = &saddr_in.sin_addr;
17e3531a 2163
811826be
JA
2164 addr = (struct sockaddr *) &saddr_in;
2165 socklen = sizeof(saddr_in);
2166 saddr_in.sin_family = AF_INET;
17e3531a 2167 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
811826be 2168 }
81179eec 2169
811826be 2170 if (bind(sk, addr, socklen) < 0) {
81179eec 2171 log_err("fio: bind: %s\n", strerror(errno));
17e3531a 2172 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
b94cba47 2173 close(sk);
81179eec
JA
2174 return -1;
2175 }
2176
87aa8f19
JA
2177 return sk;
2178}
2179
2180static int fio_init_server_sock(void)
2181{
2182 struct sockaddr_un addr;
67bf9823 2183 socklen_t len;
87aa8f19
JA
2184 mode_t mode;
2185 int sk;
2186
2187 sk = socket(AF_UNIX, SOCK_STREAM, 0);
2188 if (sk < 0) {
2189 log_err("fio: socket: %s\n", strerror(errno));
2190 return -1;
2191 }
2192
2193 mode = umask(000);
2194
2195 memset(&addr, 0, sizeof(addr));
2196 addr.sun_family = AF_UNIX;
a48fddbc 2197 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
87aa8f19
JA
2198
2199 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
2200
2201 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
2202 log_err("fio: bind: %s\n", strerror(errno));
b94cba47 2203 close(sk);
87aa8f19
JA
2204 return -1;
2205 }
2206
2207 umask(mode);
2208 return sk;
2209}
2210
2211static int fio_init_server_connection(void)
2212{
bebe6398 2213 char bind_str[128];
87aa8f19
JA
2214 int sk;
2215
2216 dprint(FD_NET, "starting server\n");
2217
2218 if (!bind_sock)
2219 sk = fio_init_server_ip();
2220 else
2221 sk = fio_init_server_sock();
2222
2223 if (sk < 0)
2224 return sk;
2225
afdcad23
JA
2226 memset(bind_str, 0, sizeof(bind_str));
2227
811826be
JA
2228 if (!bind_sock) {
2229 char *p, port[16];
a6ab5391 2230 void *src;
811826be
JA
2231 int af;
2232
2233 if (use_ipv6) {
2234 af = AF_INET6;
2235 src = &saddr_in6.sin6_addr;
2236 } else {
2237 af = AF_INET;
2238 src = &saddr_in.sin_addr;
2239 }
2240
2241 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
2242
2243 sprintf(port, ",%u", fio_net_port);
2244 if (p)
2245 strcat(p, port);
2246 else
afdcad23 2247 strncpy(bind_str, port, sizeof(bind_str) - 1);
811826be 2248 } else
afdcad23 2249 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
bebe6398
JA
2250
2251 log_info("fio: server listening on %s\n", bind_str);
2252
1e1507df 2253 if (listen(sk, 4) < 0) {
81179eec 2254 log_err("fio: listen: %s\n", strerror(errno));
2fd973c9 2255 close(sk);
81179eec
JA
2256 return -1;
2257 }
2258
87aa8f19
JA
2259 return sk;
2260}
2261
3aa3ceeb 2262int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
3ec62ec4
JA
2263 struct in6_addr *inp6)
2264
2265{
2266 int ret = 0;
2267
3aa3ceeb 2268 if (ipv6)
3ec62ec4
JA
2269 ret = inet_pton(AF_INET6, host, inp6);
2270 else
2271 ret = inet_pton(AF_INET, host, inp);
2272
2273 if (ret != 1) {
f4937575
JA
2274 struct addrinfo *res, hints = {
2275 .ai_family = ipv6 ? AF_INET6 : AF_INET,
2276 .ai_socktype = SOCK_STREAM,
2277 };
3ec62ec4 2278
479471c4
JA
2279 ret = getaddrinfo(host, NULL, &hints, &res);
2280 if (ret) {
2281 log_err("fio: failed to resolve <%s> (%s)\n", host,
2282 gai_strerror(ret));
3caf43e3 2283 return 1;
3ec62ec4
JA
2284 }
2285
3aa3ceeb 2286 if (ipv6)
479471c4
JA
2287 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
2288 else
2289 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
2290
3ec62ec4 2291 ret = 1;
479471c4 2292 freeaddrinfo(res);
3ec62ec4
JA
2293 }
2294
2295 return !(ret == 1);
2296}
2297
660a2bfb
JA
2298/*
2299 * Parse a host/ip/port string. Reads from 'str'.
2300 *
2301 * Outputs:
2302 *
2303 * For IPv4:
2304 * *ptr is the host, *port is the port, inp is the destination.
2305 * For IPv6:
2306 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
2307 * For local domain sockets:
2308 * *ptr is the filename, *is_sock is 1.
2309 */
67d2a9b8 2310int fio_server_parse_string(const char *str, char **ptr, bool *is_sock,
811826be
JA
2311 int *port, struct in_addr *inp,
2312 struct in6_addr *inp6, int *ipv6)
bebe6398 2313{
76867621
JA
2314 const char *host = str;
2315 char *portp;
3ec62ec4 2316 int lport = 0;
76867621 2317
bebe6398 2318 *ptr = NULL;
67d2a9b8 2319 *is_sock = false;
6d2cf394 2320 *port = fio_net_port;
811826be 2321 *ipv6 = 0;
bebe6398
JA
2322
2323 if (!strncmp(str, "sock:", 5)) {
2324 *ptr = strdup(str + 5);
67d2a9b8 2325 *is_sock = true;
76867621
JA
2326
2327 return 0;
2328 }
2329
2330 /*
2331 * Is it ip:<ip or host>:port
2332 */
2333 if (!strncmp(host, "ip:", 3))
2334 host += 3;
2335 else if (!strncmp(host, "ip4:", 4))
2336 host += 4;
2337 else if (!strncmp(host, "ip6:", 4)) {
2338 host += 4;
2339 *ipv6 = 1;
2340 } else if (host[0] == ':') {
2341 /* String is :port */
2342 host++;
2343 lport = atoi(host);
2344 if (!lport || lport > 65535) {
4e0a8fa2 2345 log_err("fio: bad server port %u\n", lport);
76867621
JA
2346 return 1;
2347 }
2348 /* no hostname given, we are done */
2349 *port = lport;
2350 return 0;
2351 }
2352
2353 /*
b96b90c3 2354 * If no port seen yet, check if there's a last ',' at the end
76867621
JA
2355 */
2356 if (!lport) {
2357 portp = strchr(host, ',');
2358 if (portp) {
2359 *portp = '\0';
2360 portp++;
2361 lport = atoi(portp);
bebe6398 2362 if (!lport || lport > 65535) {
4e0a8fa2 2363 log_err("fio: bad server port %u\n", lport);
bebe6398
JA
2364 return 1;
2365 }
bebe6398 2366 }
76867621 2367 }
bebe6398 2368
76867621
JA
2369 if (lport)
2370 *port = lport;
bebe6398 2371
76867621
JA
2372 if (!strlen(host))
2373 return 0;
bebe6398 2374
76867621 2375 *ptr = strdup(host);
811826be 2376
3aa3ceeb 2377 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
3ec62ec4
JA
2378 free(*ptr);
2379 *ptr = NULL;
2380 return 1;
bebe6398
JA
2381 }
2382
2383 if (*port == 0)
2384 *port = fio_net_port;
2385
2386 return 0;
2387}
2388
87aa8f19
JA
2389/*
2390 * Server arg should be one of:
2391 *
2392 * sock:/path/to/socket
2393 * ip:1.2.3.4
2394 * 1.2.3.4
2395 *
2396 * Where sock uses unix domain sockets, and ip binds the server to
2397 * a specific interface. If no arguments are given to the server, it
2398 * uses IP and binds to 0.0.0.0.
2399 *
2400 */
2401static int fio_handle_server_arg(void)
2402{
6d2cf394 2403 int port = fio_net_port;
67d2a9b8
JA
2404 bool is_sock;
2405 int ret = 0;
bebe6398 2406
87aa8f19
JA
2407 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2408
2409 if (!fio_server_arg)
a7de0a11 2410 goto out;
87aa8f19 2411
4e5b8fb8 2412 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
811826be
JA
2413 &port, &saddr_in.sin_addr,
2414 &saddr_in6.sin6_addr, &use_ipv6);
4e5b8fb8
JA
2415
2416 if (!is_sock && bind_sock) {
2417 free(bind_sock);
2418 bind_sock = NULL;
2419 }
2420
a7de0a11 2421out:
6d2cf394
JA
2422 fio_net_port = port;
2423 saddr_in.sin_port = htons(port);
811826be 2424 saddr_in6.sin6_port = htons(port);
4e5b8fb8 2425 return ret;
87aa8f19
JA
2426}
2427
43cdea1d
JA
2428static void sig_int(int sig)
2429{
2430 if (bind_sock)
2431 unlink(bind_sock);
2432}
2433
2434static void set_sig_handlers(void)
2435{
f4937575
JA
2436 struct sigaction act = {
2437 .sa_handler = sig_int,
2438 .sa_flags = SA_RESTART,
2439 };
43cdea1d 2440
43cdea1d
JA
2441 sigaction(SIGINT, &act, NULL);
2442}
2443
518a1cf0
JA
2444void fio_server_destroy_sk_key(void)
2445{
2446 pthread_key_delete(sk_out_key);
2447}
2448
3d80c735 2449int fio_server_create_sk_key(void)
87aa8f19 2450{
9c003782
JA
2451 if (pthread_key_create(&sk_out_key, NULL)) {
2452 log_err("fio: can't create sk_out backend key\n");
3d80c735 2453 return 1;
9c003782
JA
2454 }
2455
2456 pthread_setspecific(sk_out_key, NULL);
3d80c735
JA
2457 return 0;
2458}
2459
2460static int fio_server(void)
2461{
2462 int sk, ret;
9c003782 2463
87aa8f19
JA
2464 dprint(FD_NET, "starting server\n");
2465
2466 if (fio_handle_server_arg())
2467 return -1;
2468
2469 sk = fio_init_server_connection();
2470 if (sk < 0)
2471 return -1;
81179eec 2472
43cdea1d
JA
2473 set_sig_handlers();
2474
ea1cd038 2475 ret = accept_loop(sk);
87aa8f19 2476
81179eec 2477 close(sk);
87aa8f19
JA
2478
2479 if (fio_server_arg) {
2480 free(fio_server_arg);
2481 fio_server_arg = NULL;
2482 }
bebe6398
JA
2483 if (bind_sock)
2484 free(bind_sock);
87aa8f19 2485
81179eec
JA
2486 return ret;
2487}
2488
7b821684 2489void fio_server_got_signal(int signal)
9abea48b 2490{
f77d4b73
JA
2491 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2492
2493 assert(sk_out);
2494
7b821684 2495 if (signal == SIGPIPE)
f77d4b73 2496 sk_out->sk = -1;
7b821684
JA
2497 else {
2498 log_info("\nfio: terminating on signal %d\n", signal);
f1867a7f 2499 exit_backend = true;
7b821684 2500 }
9abea48b
JA
2501}
2502
13755d94
JA
2503static int check_existing_pidfile(const char *pidfile)
2504{
2505 struct stat sb;
2506 char buf[16];
2507 pid_t pid;
2508 FILE *f;
2509
2510 if (stat(pidfile, &sb))
2511 return 0;
2512
2513 f = fopen(pidfile, "r");
2514 if (!f)
2515 return 0;
2516
bfc3b179 2517 if (fread(buf, sb.st_size, 1, f) <= 0) {
13755d94
JA
2518 fclose(f);
2519 return 1;
2520 }
2521 fclose(f);
2522
2523 pid = atoi(buf);
2524 if (kill(pid, SIGCONT) < 0)
ea5aa1be 2525 return errno != ESRCH;
13755d94
JA
2526
2527 return 1;
2528}
2529
2530static int write_pid(pid_t pid, const char *pidfile)
402668f3
JA
2531{
2532 FILE *fpid;
2533
2534 fpid = fopen(pidfile, "w");
2535 if (!fpid) {
2536 log_err("fio: failed opening pid file %s\n", pidfile);
13755d94 2537 return 1;
402668f3
JA
2538 }
2539
2540 fprintf(fpid, "%u\n", (unsigned int) pid);
13755d94
JA
2541 fclose(fpid);
2542 return 0;
402668f3
JA
2543}
2544
2545/*
2546 * If pidfile is specified, background us.
2547 */
2548int fio_start_server(char *pidfile)
e46d8091
JA
2549{
2550 pid_t pid;
402668f3 2551 int ret;
e46d8091 2552
93bcfd20 2553#if defined(WIN32)
905c78b9 2554 WSADATA wsd;
3c3ed070 2555 WSAStartup(MAKEWORD(2, 2), &wsd);
93bcfd20
BC
2556#endif
2557
402668f3 2558 if (!pidfile)
e46d8091
JA
2559 return fio_server();
2560
13755d94
JA
2561 if (check_existing_pidfile(pidfile)) {
2562 log_err("fio: pidfile %s exists and server appears alive\n",
2563 pidfile);
b8ba87ac 2564 free(pidfile);
13755d94
JA
2565 return -1;
2566 }
2567
e46d8091
JA
2568 pid = fork();
2569 if (pid < 0) {
c5839011 2570 log_err("fio: failed server fork: %s\n", strerror(errno));
402668f3 2571 free(pidfile);
c28e8e8c 2572 return -1;
402668f3 2573 } else if (pid) {
8a1db9a1 2574 ret = write_pid(pid, pidfile);
b8ba87ac 2575 free(pidfile);
44c8268d 2576 _exit(ret);
402668f3 2577 }
e46d8091
JA
2578
2579 setsid();
13755d94 2580 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
f1867a7f 2581 log_syslog = true;
e46d8091
JA
2582 close(STDIN_FILENO);
2583 close(STDOUT_FILENO);
2584 close(STDERR_FILENO);
2585 f_out = NULL;
2586 f_err = NULL;
402668f3
JA
2587
2588 ret = fio_server();
2589
2590 closelog();
2591 unlink(pidfile);
2592 free(pidfile);
2593 return ret;
e46d8091 2594}
87aa8f19 2595
bebe6398 2596void fio_server_set_arg(const char *arg)
87aa8f19
JA
2597{
2598 fio_server_arg = strdup(arg);
2599}