init: remove bogus check for NULL parent
[fio.git] / server.c
CommitLineData
50d16976
JA
1#include <stdio.h>
2#include <stdlib.h>
142575e6 3#include <stdarg.h>
50d16976
JA
4#include <unistd.h>
5#include <limits.h>
50d16976
JA
6#include <errno.h>
7#include <fcntl.h>
8#include <sys/poll.h>
50d16976
JA
9#include <sys/types.h>
10#include <sys/wait.h>
d05c4a03 11#include <sys/socket.h>
87aa8f19
JA
12#include <sys/stat.h>
13#include <sys/un.h>
1f51bba9 14#include <sys/uio.h>
50d16976
JA
15#include <netinet/in.h>
16#include <arpa/inet.h>
17#include <netdb.h>
e46d8091 18#include <syslog.h>
9e22ecb0 19#include <signal.h>
3989b143 20#ifdef CONFIG_ZLIB
1b42725f 21#include <zlib.h>
3989b143 22#endif
50d16976
JA
23
24#include "fio.h"
132159a5 25#include "server.h"
fcee5ff6 26#include "crc/crc16.h"
c7c6cb4c 27#include "lib/ieee754.h"
89cf1480 28
5adc2447 29int fio_net_port = FIO_NET_PORT;
50d16976 30
009b1be4
JA
31int exit_backend = 0;
32
46c48f1f 33static int server_fd = -1;
87aa8f19
JA
34static char *fio_server_arg;
35static char *bind_sock;
36static struct sockaddr_in saddr_in;
811826be 37static struct sockaddr_in6 saddr_in6;
811826be 38static int use_ipv6;
3989b143
JA
39#ifdef CONFIG_ZLIB
40static unsigned int has_zlib = 1;
41#else
42static unsigned int has_zlib = 0;
43#endif
44static unsigned int use_zlib;
37db14fe 45
122c7725
JA
46struct fio_fork_item {
47 struct flist_head list;
48 int exitval;
49 int signal;
50 int exited;
51 pid_t pid;
52};
53
89c1707c
JA
54static const char *fio_server_ops[FIO_NET_CMD_NR] = {
55 "",
56 "QUIT",
57 "EXIT",
58 "JOB",
59 "JOBLINE",
60 "TEXT",
61 "TS",
62 "GS",
63 "SEND_ETA",
64 "ETA",
65 "PROBE",
66 "START",
d09a64a0
JA
67 "STOP",
68 "DISK_UTIL",
b9d2f30a 69 "SERVER_START",
807f9971 70 "ADD_JOB",
b9d2f30a 71 "CMD_RUN"
c70e63e5 72 "CMD_IOLOG",
89c1707c
JA
73};
74
75const char *fio_server_op(unsigned int op)
76{
77 static char buf[32];
78
79 if (op < FIO_NET_CMD_NR)
80 return fio_server_ops[op];
81
82 sprintf(buf, "UNKNOWN/%d", op);
83 return buf;
84}
85
5235f626 86static ssize_t iov_total_len(const struct iovec *iov, int count)
132159a5 87{
5235f626 88 ssize_t ret = 0;
794d69ca 89
5235f626
JA
90 while (count--) {
91 ret += iov->iov_len;
92 iov++;
93 }
94
95 return ret;
96}
132159a5 97
5235f626
JA
98static int fio_sendv_data(int sk, struct iovec *iov, int count)
99{
100 ssize_t total_len = iov_total_len(iov, count);
101 ssize_t ret;
102
103 do {
104 ret = writev(sk, iov, count);
132159a5 105 if (ret > 0) {
5235f626
JA
106 total_len -= ret;
107 if (!total_len)
132159a5 108 break;
5235f626
JA
109
110 while (ret) {
111 if (ret >= iov->iov_len) {
112 ret -= iov->iov_len;
113 iov++;
114 continue;
115 }
116 iov->iov_base += ret;
117 iov->iov_len -= ret;
118 ret = 0;
119 }
132159a5
JA
120 } else if (!ret)
121 break;
122 else if (errno == EAGAIN || errno == EINTR)
123 continue;
7b821684
JA
124 else
125 break;
132159a5
JA
126 } while (!exit_backend);
127
5235f626 128 if (!total_len)
132159a5
JA
129 return 0;
130
8b4e61b2
JA
131 if (errno)
132 return -errno;
133
132159a5
JA
134 return 1;
135}
136
5235f626
JA
137int fio_send_data(int sk, const void *p, unsigned int len)
138{
139 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
140
141 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
142
143 return fio_sendv_data(sk, &iov, 1);
144}
145
132159a5
JA
146int fio_recv_data(int sk, void *p, unsigned int len)
147{
148 do {
149 int ret = recv(sk, p, len, MSG_WAITALL);
150
151 if (ret > 0) {
152 len -= ret;
153 if (!len)
154 break;
155 p += ret;
156 continue;
157 } else if (!ret)
158 break;
159 else if (errno == EAGAIN || errno == EINTR)
160 continue;
7b821684
JA
161 else
162 break;
132159a5
JA
163 } while (!exit_backend);
164
165 if (!len)
166 return 0;
167
168 return -1;
169}
170
171static int verify_convert_cmd(struct fio_net_cmd *cmd)
172{
fcee5ff6 173 uint16_t crc;
132159a5 174
fcee5ff6
JA
175 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
176 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
132159a5 177
25dfa848 178 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
fcee5ff6 179 if (crc != cmd->cmd_crc16) {
132159a5 180 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
fcee5ff6 181 cmd->cmd_crc16, crc);
132159a5
JA
182 return 1;
183 }
184
185 cmd->version = le16_to_cpu(cmd->version);
186 cmd->opcode = le16_to_cpu(cmd->opcode);
187 cmd->flags = le32_to_cpu(cmd->flags);
af9c9fb3 188 cmd->tag = le64_to_cpu(cmd->tag);
132159a5
JA
189 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
190
191 switch (cmd->version) {
fa2ea806 192 case FIO_SERVER_VER:
132159a5
JA
193 break;
194 default:
195 log_err("fio: bad server cmd version %d\n", cmd->version);
196 return 1;
197 }
198
b9d2f30a 199 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
132159a5
JA
200 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
201 return 1;
202 }
203
204 return 0;
205}
206
a64e88da
JA
207/*
208 * Read (and defragment, if necessary) incoming commands
209 */
e951bdc4 210struct fio_net_cmd *fio_net_recv_cmd(int sk)
132159a5 211{
a64e88da
JA
212 struct fio_net_cmd cmd, *cmdret = NULL;
213 size_t cmd_size = 0, pdu_offset = 0;
fcee5ff6 214 uint16_t crc;
a64e88da
JA
215 int ret, first = 1;
216 void *pdu = NULL;
132159a5 217
a64e88da
JA
218 do {
219 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
220 if (ret)
221 break;
132159a5 222
a64e88da
JA
223 /* We have a command, verify it and swap if need be */
224 ret = verify_convert_cmd(&cmd);
225 if (ret)
226 break;
132159a5 227
0b8f30a5
JA
228 if (first) {
229 /* if this is text, add room for \0 at the end */
230 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
231 assert(!cmdret);
232 } else
a64e88da 233 cmd_size += cmd.pdu_len;
132159a5 234
a64e88da 235 cmdret = realloc(cmdret, cmd_size);
132159a5 236
a64e88da
JA
237 if (first)
238 memcpy(cmdret, &cmd, sizeof(cmd));
67f15dcf
JA
239 else if (cmdret->opcode != cmd.opcode) {
240 log_err("fio: fragment opcode mismatch (%d != %d)\n",
241 cmdret->opcode, cmd.opcode);
242 ret = 1;
243 break;
244 }
a64e88da
JA
245
246 if (!cmd.pdu_len)
247 break;
248
249 /* There's payload, get it */
250 pdu = (void *) cmdret->payload + pdu_offset;
251 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
252 if (ret)
253 break;
254
255 /* Verify payload crc */
25dfa848 256 crc = fio_crc16(pdu, cmd.pdu_len);
a64e88da
JA
257 if (crc != cmd.pdu_crc16) {
258 log_err("fio: server bad crc on payload ");
259 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
260 ret = 1;
261 break;
262 }
263
264 pdu_offset += cmd.pdu_len;
817f06bb
JA
265 if (!first)
266 cmdret->pdu_len += cmd.pdu_len;
a64e88da
JA
267 first = 0;
268 } while (cmd.flags & FIO_NET_CMD_F_MORE);
132159a5 269
a64e88da
JA
270 if (ret) {
271 free(cmdret);
272 cmdret = NULL;
0b8f30a5
JA
273 } else if (cmdret) {
274 /* zero-terminate text input */
084d1c6f
JA
275 if (cmdret->pdu_len) {
276 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
277 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
278 char *buf = (char *) pdu->buf;
0b8f30a5 279
3c3ed070 280 buf[pdu->buf_len] = '\0';
084d1c6f 281 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
46bcd498
JA
282 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
283 char *buf = (char *) pdu->buf;
284 int len = le32_to_cpu(pdu->buf_len);
084d1c6f 285
46bcd498 286 buf[len] = '\0';
084d1c6f 287 }
0b8f30a5 288 }
084d1c6f 289
0b8f30a5 290 /* frag flag is internal */
a64e88da 291 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
0b8f30a5 292 }
a64e88da
JA
293
294 return cmdret;
132159a5
JA
295}
296
40c60516
JA
297static void add_reply(uint64_t tag, struct flist_head *list)
298{
a572bbfb 299 struct fio_net_cmd_reply *reply;
40c60516 300
a572bbfb 301 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
40c60516
JA
302 flist_add_tail(&reply->list, list);
303}
304
305static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
306{
307 struct fio_net_cmd_reply *reply;
308
309 reply = calloc(1, sizeof(*reply));
310 INIT_FLIST_HEAD(&reply->list);
311 gettimeofday(&reply->tv, NULL);
312 reply->saved_tag = tag;
313 reply->opcode = opcode;
314
315 return (uintptr_t) reply;
316}
317
318static void free_reply(uint64_t tag)
319{
a572bbfb 320 struct fio_net_cmd_reply *reply;
40c60516 321
a572bbfb 322 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
40c60516
JA
323 free(reply);
324}
325
53bd8dbc 326void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
132159a5
JA
327{
328 uint32_t pdu_len;
329
25dfa848 330 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
132159a5
JA
331
332 pdu_len = le32_to_cpu(cmd->pdu_len);
1b42725f
JA
333 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
334}
335
336void fio_net_cmd_crc(struct fio_net_cmd *cmd)
337{
338 fio_net_cmd_crc_pdu(cmd, cmd->payload);
132159a5
JA
339}
340
af9c9fb3 341int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
40c60516 342 uint64_t *tagptr, struct flist_head *list)
794d69ca 343{
7f868316
JA
344 struct fio_net_cmd *cmd = NULL;
345 size_t this_len, cur_len = 0;
40c60516 346 uint64_t tag;
794d69ca
JA
347 int ret;
348
40c60516
JA
349 if (list) {
350 assert(tagptr);
351 tag = *tagptr = alloc_reply(*tagptr, opcode);
352 } else
353 tag = tagptr ? *tagptr : 0;
354
794d69ca
JA
355 do {
356 this_len = size;
b9d2f30a
JA
357 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
358 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
794d69ca 359
7f868316
JA
360 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
361 if (cmd)
362 free(cmd);
363
364 cur_len = sizeof(*cmd) + this_len;
365 cmd = malloc(cur_len);
366 }
794d69ca 367
af9c9fb3 368 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
794d69ca
JA
369
370 if (this_len < size)
ddcc0b69 371 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
794d69ca
JA
372
373 fio_net_cmd_crc(cmd);
374
375 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
794d69ca
JA
376 size -= this_len;
377 buf += this_len;
378 } while (!ret && size);
379
40c60516
JA
380 if (list) {
381 if (ret)
382 free_reply(tag);
383 else
384 add_reply(tag, list);
385 }
386
7f868316
JA
387 if (cmd)
388 free(cmd);
389
794d69ca
JA
390 return ret;
391}
392
89c1707c 393static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
132159a5 394{
178cde9f 395 struct fio_net_cmd cmd;
132159a5 396
af9c9fb3 397 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
132159a5
JA
398 fio_net_cmd_crc(&cmd);
399
400 return fio_send_data(sk, &cmd, sizeof(cmd));
401}
402
89c1707c
JA
403/*
404 * If 'list' is non-NULL, then allocate and store the sent command for
405 * later verification.
406 */
407int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
408 struct flist_head *list)
409{
89c1707c
JA
410 int ret;
411
40c60516
JA
412 if (list)
413 tag = alloc_reply(tag, opcode);
89c1707c 414
40c60516 415 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
89c1707c 416 if (ret) {
40c60516
JA
417 if (list)
418 free_reply(tag);
419
89c1707c
JA
420 return ret;
421 }
422
40c60516
JA
423 if (list)
424 add_reply(tag, list);
425
89c1707c
JA
426 return 0;
427}
428
122c7725 429int fio_net_send_quit(int sk)
437377e1 430{
46c48f1f 431 dprint(FD_NET, "server: sending quit\n");
122c7725 432
8c95307b 433 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
437377e1
JA
434}
435
f58bd2a4
JA
436static int fio_net_send_ack(int sk, struct fio_net_cmd *cmd, int error,
437 int signal)
132159a5 438{
11e950bd 439 struct cmd_end_pdu epdu;
f58bd2a4 440 uint64_t tag = 0;
122c7725 441
f58bd2a4
JA
442 if (cmd)
443 tag = cmd->tag;
122c7725
JA
444
445 epdu.error = __cpu_to_le32(error);
446 epdu.signal = __cpu_to_le32(signal);
40c60516 447 return fio_net_send_cmd(sk, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, NULL);
f58bd2a4
JA
448}
449
450int fio_net_send_stop(int sk, int error, int signal)
451{
452 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
453 return fio_net_send_ack(sk, NULL, error, signal);
122c7725
JA
454}
455
456static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
457{
458 struct fio_fork_item *ffi;
459
460 ffi = malloc(sizeof(*ffi));
461 ffi->exitval = 0;
462 ffi->signal = 0;
463 ffi->exited = 0;
464 ffi->pid = pid;
465 flist_add_tail(&ffi->list, list);
466}
467
6348b5de 468static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
122c7725 469{
a7533dbd 470 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
6348b5de 471 fio_server_add_fork_item(pid, conn_list);
122c7725
JA
472}
473
6348b5de 474static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
122c7725 475{
a7533dbd 476 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
6348b5de 477 fio_server_add_fork_item(pid, job_list);
122c7725
JA
478}
479
480static void fio_server_check_fork_item(struct fio_fork_item *ffi)
481{
482 int ret, status;
483
484 ret = waitpid(ffi->pid, &status, WNOHANG);
485 if (ret < 0) {
486 if (errno == ECHILD) {
a7533dbd 487 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
122c7725
JA
488 ffi->exited = 1;
489 } else
490 log_err("fio: waitpid: %s\n", strerror(errno));
491 } else if (ret == ffi->pid) {
492 if (WIFSIGNALED(status)) {
493 ffi->signal = WTERMSIG(status);
494 ffi->exited = 1;
495 }
496 if (WIFEXITED(status)) {
497 if (WEXITSTATUS(status))
498 ffi->exitval = WEXITSTATUS(status);
499 ffi->exited = 1;
500 }
501 }
502}
503
504static void fio_server_fork_item_done(struct fio_fork_item *ffi)
505{
a7533dbd 506 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
122c7725
JA
507
508 /*
509 * Fold STOP and QUIT...
510 */
511 fio_net_send_stop(server_fd, ffi->exitval, ffi->signal);
512 fio_net_send_quit(server_fd);
513 flist_del(&ffi->list);
514 free(ffi);
515}
516
54163255 517static void fio_server_check_fork_items(struct flist_head *list)
122c7725
JA
518{
519 struct flist_head *entry, *tmp;
520 struct fio_fork_item *ffi;
521
522 flist_for_each_safe(entry, tmp, list) {
523 ffi = flist_entry(entry, struct fio_fork_item, list);
524
525 fio_server_check_fork_item(ffi);
526
527 if (ffi->exited)
528 fio_server_fork_item_done(ffi);
529 }
530}
531
6348b5de 532static void fio_server_check_jobs(struct flist_head *job_list)
122c7725 533{
6348b5de 534 fio_server_check_fork_items(job_list);
122c7725
JA
535}
536
6348b5de 537static void fio_server_check_conns(struct flist_head *conn_list)
122c7725 538{
6348b5de 539 fio_server_check_fork_items(conn_list);
122c7725
JA
540}
541
6348b5de 542static int handle_run_cmd(struct flist_head *job_list, struct fio_net_cmd *cmd)
122c7725
JA
543{
544 pid_t pid;
a64e88da 545 int ret;
132159a5 546
122c7725 547 set_genesis_time();
11e950bd 548
122c7725
JA
549 pid = fork();
550 if (pid) {
6348b5de 551 fio_server_add_job_pid(job_list, pid);
122c7725
JA
552 return 0;
553 }
11e950bd 554
122c7725 555 ret = fio_backend();
2bb3f0a7 556 free_threads_shm();
122c7725 557 _exit(ret);
81179eec
JA
558}
559
b9d2f30a
JA
560static int handle_job_cmd(struct fio_net_cmd *cmd)
561{
46bcd498
JA
562 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
563 void *buf = pdu->buf;
b9d2f30a
JA
564 struct cmd_start_pdu spdu;
565
46bcd498
JA
566 pdu->buf_len = le32_to_cpu(pdu->buf_len);
567 pdu->client_type = le32_to_cpu(pdu->client_type);
568
569 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
122c7725 570 fio_net_send_quit(server_fd);
b9d2f30a
JA
571 return -1;
572 }
573
574 spdu.jobs = cpu_to_le32(thread_number);
108fea77 575 spdu.stat_outputs = cpu_to_le32(stat_number);
40c60516 576 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
b9d2f30a
JA
577 return 0;
578}
579
81179eec
JA
580static int handle_jobline_cmd(struct fio_net_cmd *cmd)
581{
fa2ea806
JA
582 void *pdu = cmd->payload;
583 struct cmd_single_line_pdu *cslp;
584 struct cmd_line_pdu *clp;
585 unsigned long offset;
b9d2f30a 586 struct cmd_start_pdu spdu;
fa2ea806 587 char **argv;
b9d2f30a 588 int i;
81179eec 589
fa2ea806
JA
590 clp = pdu;
591 clp->lines = le16_to_cpu(clp->lines);
46bcd498 592 clp->client_type = le16_to_cpu(clp->client_type);
fa2ea806
JA
593 argv = malloc(clp->lines * sizeof(char *));
594 offset = sizeof(*clp);
81179eec 595
fa2ea806 596 dprint(FD_NET, "server: %d command line args\n", clp->lines);
39e8e016 597
fa2ea806
JA
598 for (i = 0; i < clp->lines; i++) {
599 cslp = pdu + offset;
600 argv[i] = (char *) cslp->text;
601
602 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
39e8e016
JA
603 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
604 }
81179eec 605
46bcd498 606 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
122c7725 607 fio_net_send_quit(server_fd);
fa2ea806 608 free(argv);
81179eec 609 return -1;
e6d1c668 610 }
81179eec 611
fa2ea806
JA
612 free(argv);
613
b9d2f30a 614 spdu.jobs = cpu_to_le32(thread_number);
1e5324e7 615 spdu.stat_outputs = cpu_to_le32(stat_number);
40c60516 616 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
b9d2f30a 617 return 0;
132159a5
JA
618}
619
c28e8e8c
JA
620static int handle_probe_cmd(struct fio_net_cmd *cmd)
621{
3989b143
JA
622 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
623 struct cmd_probe_reply_pdu probe;
40c60516 624 uint64_t tag = cmd->tag;
c28e8e8c 625
89c1707c
JA
626 dprint(FD_NET, "server: sending probe reply\n");
627
c28e8e8c
JA
628 memset(&probe, 0, sizeof(probe));
629 gethostname((char *) probe.hostname, sizeof(probe.hostname));
0dcebdf4 630#ifdef CONFIG_BIG_ENDIAN
6eb24791
JA
631 probe.bigendian = 1;
632#endif
750db473 633 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
c28e8e8c 634
cca84643
JA
635 probe.os = FIO_OS;
636 probe.arch = FIO_ARCH;
38fdef22 637 probe.bpp = sizeof(void *);
d31e26d0 638 probe.cpus = __cpu_to_le32(cpus_online());
3989b143
JA
639
640 /*
641 * If the client supports compression and we do too, then enable it
642 */
643 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
644 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
645 use_zlib = 1;
646 } else {
647 probe.flags = 0;
648 use_zlib = 0;
649 }
38fdef22 650
40c60516 651 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL);
af9c9fb3
JA
652}
653
654static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
655{
656 struct jobs_eta *je;
657 size_t size;
40c60516 658 uint64_t tag = cmd->tag;
af9c9fb3
JA
659 int i;
660
b814fb26
JA
661 if (!thread_number)
662 return 0;
663
664 size = sizeof(*je) + thread_number * sizeof(char) + 1;
7f868316
JA
665 je = malloc(size);
666 memset(je, 0, size);
af9c9fb3
JA
667
668 if (!calc_thread_status(je, 1)) {
669 free(je);
670 return 0;
671 }
672
673 dprint(FD_NET, "server sending status\n");
674
675 je->nr_running = cpu_to_le32(je->nr_running);
676 je->nr_ramp = cpu_to_le32(je->nr_ramp);
677 je->nr_pending = cpu_to_le32(je->nr_pending);
714e85f3 678 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
af9c9fb3 679 je->files_open = cpu_to_le32(je->files_open);
af9c9fb3 680
298921d6 681 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
3e47bd25
JA
682 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
683 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
684 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
685 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
16725bb0
JA
686 je->rate[i] = cpu_to_le32(je->rate[i]);
687 je->iops[i] = cpu_to_le32(je->iops[i]);
af9c9fb3
JA
688 }
689
c1970b90 690 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
af9c9fb3 691 je->eta_sec = cpu_to_le64(je->eta_sec);
8c621fb2 692 je->nr_threads = cpu_to_le32(je->nr_threads);
b7f05eb0 693 je->is_pow2 = cpu_to_le32(je->is_pow2);
ed2c0a12 694 je->unit_base = cpu_to_le32(je->unit_base);
af9c9fb3 695
40c60516 696 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, &tag, NULL);
af9c9fb3
JA
697 free(je);
698 return 0;
c28e8e8c
JA
699}
700
40c60516
JA
701static int send_update_job_reply(int fd, uint64_t __tag, int error)
702{
703 uint64_t tag = __tag;
704 uint32_t pdu_error;
705
706 pdu_error = __cpu_to_le32(error);
707 return fio_net_send_cmd(fd, FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, NULL);
708}
709
f58bd2a4
JA
710static int handle_update_job_cmd(struct fio_net_cmd *cmd)
711{
712 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
713 struct thread_data *td;
714 uint32_t tnumber;
715
716 tnumber = le32_to_cpu(pdu->thread_number);
717
718 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
719
30ffacbf 720 if (!tnumber || tnumber > thread_number) {
40c60516 721 send_update_job_reply(server_fd, cmd->tag, ENODEV);
f58bd2a4
JA
722 return 0;
723 }
724
30ffacbf 725 td = &threads[tnumber - 1];
f58bd2a4 726 convert_thread_options_to_cpu(&td->o, &pdu->top);
40c60516 727 send_update_job_reply(server_fd, cmd->tag, 0);
f58bd2a4
JA
728 return 0;
729}
730
6348b5de 731static int handle_command(struct flist_head *job_list, struct fio_net_cmd *cmd)
132159a5
JA
732{
733 int ret;
734
4b91ee8f
JA
735 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
736 fio_server_op(cmd->opcode), cmd->pdu_len,
737 (unsigned long long) cmd->tag);
46c48f1f 738
132159a5
JA
739 switch (cmd->opcode) {
740 case FIO_NET_CMD_QUIT:
cc0df00a 741 fio_terminate_threads(TERMINATE_ALL);
c28e8e8c 742 return -1;
d7959186 743 case FIO_NET_CMD_EXIT:
132159a5 744 exit_backend = 1;
c28e8e8c 745 return -1;
132159a5 746 case FIO_NET_CMD_JOB:
0b8f30a5 747 ret = handle_job_cmd(cmd);
132159a5 748 break;
81179eec
JA
749 case FIO_NET_CMD_JOBLINE:
750 ret = handle_jobline_cmd(cmd);
751 break;
c28e8e8c
JA
752 case FIO_NET_CMD_PROBE:
753 ret = handle_probe_cmd(cmd);
754 break;
af9c9fb3
JA
755 case FIO_NET_CMD_SEND_ETA:
756 ret = handle_send_eta_cmd(cmd);
757 break;
b9d2f30a 758 case FIO_NET_CMD_RUN:
6348b5de 759 ret = handle_run_cmd(job_list, cmd);
b9d2f30a 760 break;
f58bd2a4
JA
761 case FIO_NET_CMD_UPDATE_JOB:
762 ret = handle_update_job_cmd(cmd);
763 break;
132159a5 764 default:
3c3ed070 765 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
132159a5
JA
766 ret = 1;
767 }
768
769 return ret;
770}
771
122c7725 772static int handle_connection(int sk)
132159a5
JA
773{
774 struct fio_net_cmd *cmd = NULL;
6348b5de 775 FLIST_HEAD(job_list);
132159a5
JA
776 int ret = 0;
777
122c7725 778 reset_fio_state();
122c7725
JA
779 server_fd = sk;
780
132159a5
JA
781 /* read forever */
782 while (!exit_backend) {
e951bdc4
JA
783 struct pollfd pfd = {
784 .fd = sk,
785 .events = POLLIN,
786 };
787
788 ret = 0;
789 do {
54163255
JA
790 int timeout = 1000;
791
792 if (!flist_empty(&job_list))
793 timeout = 100;
3c3ed070 794
54163255 795 ret = poll(&pfd, 1, timeout);
e951bdc4
JA
796 if (ret < 0) {
797 if (errno == EINTR)
798 break;
799 log_err("fio: poll: %s\n", strerror(errno));
800 break;
19c65179 801 } else if (!ret) {
6348b5de 802 fio_server_check_jobs(&job_list);
e951bdc4 803 continue;
19c65179 804 }
e951bdc4
JA
805
806 if (pfd.revents & POLLIN)
807 break;
808 if (pfd.revents & (POLLERR|POLLHUP)) {
809 ret = 1;
810 break;
811 }
19c65179 812 } while (!exit_backend);
e951bdc4 813
6348b5de 814 fio_server_check_jobs(&job_list);
122c7725 815
e951bdc4
JA
816 if (ret < 0)
817 break;
818
819 cmd = fio_net_recv_cmd(sk);
132159a5 820 if (!cmd) {
c28e8e8c 821 ret = -1;
132159a5
JA
822 break;
823 }
824
6348b5de 825 ret = handle_command(&job_list, cmd);
132159a5
JA
826 if (ret)
827 break;
828
829 free(cmd);
c77a99e7 830 cmd = NULL;
132159a5
JA
831 }
832
833 if (cmd)
834 free(cmd);
835
122c7725
JA
836 close(sk);
837 _exit(ret);
cc0df00a
JA
838}
839
50d16976
JA
840static int accept_loop(int listen_sk)
841{
bb447a27 842 struct sockaddr_in addr;
479471c4
JA
843 struct sockaddr_in6 addr6;
844 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
009b1be4 845 struct pollfd pfd;
122c7725 846 int ret = 0, sk, flags, exitval = 0;
6348b5de 847 FLIST_HEAD(conn_list);
50d16976 848
60efd14e
JA
849 dprint(FD_NET, "server enter accept loop\n");
850
009b1be4
JA
851 flags = fcntl(listen_sk, F_GETFL);
852 flags |= O_NONBLOCK;
853 fcntl(listen_sk, F_SETFL, flags);
009b1be4 854
122c7725 855 while (!exit_backend) {
479471c4
JA
856 const char *from;
857 char buf[64];
122c7725 858 pid_t pid;
009b1be4 859
122c7725
JA
860 pfd.fd = listen_sk;
861 pfd.events = POLLIN;
862 do {
54163255
JA
863 int timeout = 1000;
864
865 if (!flist_empty(&conn_list))
866 timeout = 100;
867
868 ret = poll(&pfd, 1, timeout);
122c7725
JA
869 if (ret < 0) {
870 if (errno == EINTR)
871 break;
872 log_err("fio: poll: %s\n", strerror(errno));
873 break;
874 } else if (!ret) {
6348b5de 875 fio_server_check_conns(&conn_list);
122c7725
JA
876 continue;
877 }
009b1be4 878
122c7725
JA
879 if (pfd.revents & POLLIN)
880 break;
881 } while (!exit_backend);
50d16976 882
6348b5de 883 fio_server_check_conns(&conn_list);
46c48f1f 884
122c7725
JA
885 if (exit_backend || ret < 0)
886 break;
887
479471c4
JA
888 if (use_ipv6)
889 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
890 else
891 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
892
122c7725
JA
893 if (sk < 0) {
894 log_err("fio: accept: %s\n", strerror(errno));
895 return -1;
896 }
37db14fe 897
479471c4
JA
898 if (use_ipv6)
899 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
900 else
901 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
902
903 dprint(FD_NET, "server: connect from %s\n", from);
50d16976 904
122c7725
JA
905 pid = fork();
906 if (pid) {
907 close(sk);
6348b5de 908 fio_server_add_conn_pid(&conn_list, pid);
122c7725
JA
909 continue;
910 }
5c341e9a 911
122c7725
JA
912 /* exits */
913 handle_connection(sk);
914 }
5c341e9a 915
132159a5 916 return exitval;
50d16976
JA
917}
918
084d1c6f 919int fio_server_text_output(int level, const char *buf, size_t len)
37db14fe 920{
084d1c6f
JA
921 struct cmd_text_pdu *pdu;
922 unsigned int tlen;
923 struct timeval tv;
924
925 if (server_fd == -1)
926 return log_local_buf(buf, len);
927
928 tlen = sizeof(*pdu) + len;
929 pdu = malloc(tlen);
930
931 pdu->level = __cpu_to_le32(level);
932 pdu->buf_len = __cpu_to_le32(len);
933
934 gettimeofday(&tv, NULL);
935 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
936 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
337d75a8 937
084d1c6f
JA
938 memcpy(pdu->buf, buf, len);
939
40c60516 940 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, NULL, NULL);
084d1c6f
JA
941 free(pdu);
942 return len;
142575e6
JA
943}
944
a64e88da
JA
945static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
946{
947 dst->max_val = cpu_to_le64(src->max_val);
948 dst->min_val = cpu_to_le64(src->min_val);
949 dst->samples = cpu_to_le64(src->samples);
802ad4a8
JA
950
951 /*
952 * Encode to IEEE 754 for network transfer
953 */
954 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
955 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
a64e88da
JA
956}
957
958static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
959{
960 int i;
961
298921d6 962 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
963 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
964 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
965 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
966 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
967 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
968 dst->agg[i] = cpu_to_le64(src->agg[i]);
969 }
970
971 dst->kb_base = cpu_to_le32(src->kb_base);
ad705bcb 972 dst->unit_base = cpu_to_le32(src->unit_base);
a64e88da 973 dst->groupid = cpu_to_le32(src->groupid);
771e58be 974 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
a64e88da
JA
975}
976
977/*
978 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
979 * into a single payload.
980 */
981void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
982{
983 struct cmd_ts_pdu p;
984 int i, j;
985
60efd14e
JA
986 dprint(FD_NET, "server sending end stats\n");
987
317b3c8b
JA
988 memset(&p, 0, sizeof(p));
989
4e59d0f3
JA
990 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
991 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
992 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
a64e88da 993
2f122b13
JA
994 p.ts.error = cpu_to_le32(ts->error);
995 p.ts.thread_number = cpu_to_le32(ts->thread_number);
996 p.ts.groupid = cpu_to_le32(ts->groupid);
997 p.ts.pid = cpu_to_le32(ts->pid);
998 p.ts.members = cpu_to_le32(ts->members);
771e58be 999 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
a64e88da 1000
298921d6 1001 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
1002 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1003 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1004 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1005 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1006 }
1007
1008 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1009 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1010 p.ts.ctx = cpu_to_le64(ts->ctx);
1011 p.ts.minf = cpu_to_le64(ts->minf);
1012 p.ts.majf = cpu_to_le64(ts->majf);
1013 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
802ad4a8
JA
1014
1015 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
cfc03e46
JA
1016 fio_fp64_t *src = &ts->percentile_list[i];
1017 fio_fp64_t *dst = &p.ts.percentile_list[i];
802ad4a8 1018
cfc03e46 1019 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
802ad4a8 1020 }
a64e88da
JA
1021
1022 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1023 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1024 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1025 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1026 }
1027
1028 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1029 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1030 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1031 }
1032
298921d6 1033 for (i = 0; i < DDIR_RWDIR_CNT; i++)
a64e88da
JA
1034 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1035 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1036
78799deb 1037 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da 1038 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
93eee04a 1039 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
a64e88da
JA
1040 }
1041
93eee04a 1042 p.ts.total_submit = cpu_to_le64(ts->total_submit);
a64e88da
JA
1043 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1044
298921d6 1045 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
a64e88da
JA
1046 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1047 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1048 }
1049
1050 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1051 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1052 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
ddcc0b69
JA
1053 p.ts.first_error = cpu_to_le32(ts->first_error);
1054 p.ts.kb_base = cpu_to_le32(ts->kb_base);
ad705bcb 1055 p.ts.unit_base = cpu_to_le32(ts->unit_base);
a64e88da 1056
3e260a46
JA
1057 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1058 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1059 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1060 p.ts.latency_percentile.u.i = __cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1061
a64e88da
JA
1062 convert_gs(&p.rs, rs);
1063
40c60516 1064 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), NULL, NULL);
a64e88da
JA
1065}
1066
1067void fio_server_send_gs(struct group_run_stats *rs)
1068{
1069 struct group_run_stats gs;
1070
60efd14e
JA
1071 dprint(FD_NET, "server sending group run stats\n");
1072
a64e88da 1073 convert_gs(&gs, rs);
40c60516 1074 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, NULL);
cf451d1e
JA
1075}
1076
d09a64a0
JA
1077static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1078{
1079 int i;
1080
1081 for (i = 0; i < 2; i++) {
1082 dst->ios[i] = cpu_to_le32(src->ios[i]);
1083 dst->merges[i] = cpu_to_le32(src->merges[i]);
1084 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1085 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
1086 }
1087
1088 dst->io_ticks = cpu_to_le32(src->io_ticks);
1089 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
1090 dst->slavecount = cpu_to_le32(src->slavecount);
1091 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1092}
1093
1094static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1095{
1096 int i;
1097
1098 strcpy((char *) dst->name, (char *) src->name);
1099
1100 for (i = 0; i < 2; i++) {
1101 dst->ios[i] = cpu_to_le32(src->ios[i]);
1102 dst->merges[i] = cpu_to_le32(src->merges[i]);
1103 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1104 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
1105 }
1106
1107 dst->io_ticks = cpu_to_le32(src->io_ticks);
1108 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
1109 dst->msec = cpu_to_le64(src->msec);
1110}
1111
1112void fio_server_send_du(void)
1113{
1114 struct disk_util *du;
1115 struct flist_head *entry;
1116 struct cmd_du_pdu pdu;
1117
1118 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1119
0766d92e
JA
1120 memset(&pdu, 0, sizeof(pdu));
1121
d09a64a0
JA
1122 flist_for_each(entry, &disk_list) {
1123 du = flist_entry(entry, struct disk_util, list);
1124
1125 convert_dus(&pdu.dus, &du->dus);
1126 convert_agg(&pdu.agg, &du->agg);
1127
40c60516 1128 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, NULL);
d09a64a0
JA
1129 }
1130}
1131
53bd8dbc
JA
1132/*
1133 * Send a command with a separate PDU, not inlined in the command
1134 */
1135static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1136 off_t size, uint64_t tag, uint32_t flags)
1137{
1138 struct fio_net_cmd cmd;
1139 struct iovec iov[2];
1140
9f247261 1141 iov[0].iov_base = (void *) &cmd;
53bd8dbc
JA
1142 iov[0].iov_len = sizeof(cmd);
1143 iov[1].iov_base = (void *) buf;
1144 iov[1].iov_len = size;
1145
1146 __fio_init_net_cmd(&cmd, opcode, size, tag);
1147 cmd.flags = __cpu_to_le32(flags);
1148 fio_net_cmd_crc_pdu(&cmd, buf);
1149
8c95307b 1150 return fio_sendv_data(sk, iov, 2);
53bd8dbc
JA
1151}
1152
3989b143 1153static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log)
1b42725f 1154{
3989b143
JA
1155 int ret = 0;
1156#ifdef CONFIG_ZLIB
1b42725f
JA
1157 z_stream stream;
1158 void *out_pdu;
1b42725f
JA
1159
1160 /*
1161 * Dirty - since the log is potentially huge, compress it into
1162 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1163 * side defragment it.
1164 */
1165 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1166
1167 stream.zalloc = Z_NULL;
1168 stream.zfree = Z_NULL;
1169 stream.opaque = Z_NULL;
1170
1171 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
53bd8dbc
JA
1172 ret = 1;
1173 goto err;
1b42725f
JA
1174 }
1175
f5ed765a
JA
1176 stream.next_in = (void *) log->log;
1177 stream.avail_in = log->nr_samples * sizeof(struct io_sample);
1b42725f
JA
1178
1179 do {
53bd8dbc
JA
1180 unsigned int this_len, flags = 0;
1181 int ret;
1b42725f
JA
1182
1183 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1184 stream.next_out = out_pdu;
3c547fe0
JA
1185 ret = deflate(&stream, Z_FINISH);
1186 /* may be Z_OK, or Z_STREAM_END */
1187 if (ret < 0)
1188 goto err_zlib;
1b42725f
JA
1189
1190 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1191
1b42725f 1192 if (stream.avail_in)
53bd8dbc 1193 flags = FIO_NET_CMD_F_MORE;
1b42725f 1194
53bd8dbc
JA
1195 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
1196 out_pdu, this_len, 0, flags);
1197 if (ret)
1198 goto err_zlib;
1b42725f
JA
1199 } while (stream.avail_in);
1200
53bd8dbc 1201err_zlib:
1b42725f 1202 deflateEnd(&stream);
53bd8dbc
JA
1203err:
1204 free(out_pdu);
3989b143 1205#endif
53bd8dbc 1206 return ret;
1b42725f
JA
1207}
1208
3989b143
JA
1209int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1210{
1211 struct cmd_iolog_pdu pdu;
1212 int i, ret = 0;
1213
1214 pdu.thread_number = cpu_to_le32(td->thread_number);
1215 pdu.nr_samples = __cpu_to_le32(log->nr_samples);
1216 pdu.log_type = cpu_to_le32(log->log_type);
1217 pdu.compressed = cpu_to_le32(use_zlib);
1218 strcpy((char *) pdu.name, name);
1219
1220 for (i = 0; i < log->nr_samples; i++) {
1221 struct io_sample *s = &log->log[i];
1222
1223 s->time = cpu_to_le64(s->time);
1224 s->val = cpu_to_le64(s->val);
1225 s->ddir = cpu_to_le32(s->ddir);
1226 s->bs = cpu_to_le32(s->bs);
1227 }
1228
1229 /*
1230 * Send header first, it's not compressed.
1231 */
1232 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
1233 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
1234 if (ret)
1235 return ret;
1236
1237 /*
1238 * Now send actual log, compress if we can, otherwise just plain
1239 */
1240 if (use_zlib)
1241 return fio_send_iolog_gz(&pdu, log);
1242
1243 return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log,
1244 log->nr_samples * sizeof(struct io_sample), 0, 0);
1245}
1246
2f122b13 1247void fio_server_send_add_job(struct thread_data *td)
807f9971
JA
1248{
1249 struct cmd_add_job_pdu pdu;
807f9971 1250
731e30a2 1251 memset(&pdu, 0, sizeof(pdu));
2f122b13
JA
1252 pdu.thread_number = cpu_to_le32(td->thread_number);
1253 pdu.groupid = cpu_to_le32(td->groupid);
1254 convert_thread_options_to_net(&pdu.top, &td->o);
807f9971 1255
40c60516 1256 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, NULL);
807f9971
JA
1257}
1258
122c7725
JA
1259void fio_server_send_start(struct thread_data *td)
1260{
1261 assert(server_fd != -1);
1262
1263 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
1264}
1265
87aa8f19 1266static int fio_init_server_ip(void)
81179eec 1267{
811826be 1268 struct sockaddr *addr;
67bf9823 1269 socklen_t socklen;
17e3531a
JA
1270 char buf[80];
1271 const char *str;
87aa8f19 1272 int sk, opt;
81179eec 1273
811826be
JA
1274 if (use_ipv6)
1275 sk = socket(AF_INET6, SOCK_STREAM, 0);
1276 else
1277 sk = socket(AF_INET, SOCK_STREAM, 0);
1278
81179eec
JA
1279 if (sk < 0) {
1280 log_err("fio: socket: %s\n", strerror(errno));
1281 return -1;
1282 }
1283
1284 opt = 1;
1f81991e 1285 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
81179eec 1286 log_err("fio: setsockopt: %s\n", strerror(errno));
b94cba47 1287 close(sk);
81179eec
JA
1288 return -1;
1289 }
1290#ifdef SO_REUSEPORT
6eb24791 1291 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
81179eec 1292 log_err("fio: setsockopt: %s\n", strerror(errno));
b94cba47 1293 close(sk);
81179eec
JA
1294 return -1;
1295 }
1296#endif
1297
811826be 1298 if (use_ipv6) {
17e3531a
JA
1299 const void *src = &saddr_in6.sin6_addr;
1300
811826be
JA
1301 addr = (struct sockaddr *) &saddr_in6;
1302 socklen = sizeof(saddr_in6);
1303 saddr_in6.sin6_family = AF_INET6;
17e3531a 1304 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
811826be 1305 } else {
17e3531a
JA
1306 const void *src = &saddr_in.sin_addr;
1307
811826be
JA
1308 addr = (struct sockaddr *) &saddr_in;
1309 socklen = sizeof(saddr_in);
1310 saddr_in.sin_family = AF_INET;
17e3531a 1311 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
811826be 1312 }
81179eec 1313
811826be 1314 if (bind(sk, addr, socklen) < 0) {
81179eec 1315 log_err("fio: bind: %s\n", strerror(errno));
17e3531a 1316 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
b94cba47 1317 close(sk);
81179eec
JA
1318 return -1;
1319 }
1320
87aa8f19
JA
1321 return sk;
1322}
1323
1324static int fio_init_server_sock(void)
1325{
1326 struct sockaddr_un addr;
67bf9823 1327 socklen_t len;
87aa8f19
JA
1328 mode_t mode;
1329 int sk;
1330
1331 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1332 if (sk < 0) {
1333 log_err("fio: socket: %s\n", strerror(errno));
1334 return -1;
1335 }
1336
1337 mode = umask(000);
1338
1339 memset(&addr, 0, sizeof(addr));
1340 addr.sun_family = AF_UNIX;
1341 strcpy(addr.sun_path, bind_sock);
87aa8f19
JA
1342
1343 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1344
1345 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1346 log_err("fio: bind: %s\n", strerror(errno));
b94cba47 1347 close(sk);
87aa8f19
JA
1348 return -1;
1349 }
1350
1351 umask(mode);
1352 return sk;
1353}
1354
1355static int fio_init_server_connection(void)
1356{
bebe6398 1357 char bind_str[128];
87aa8f19
JA
1358 int sk;
1359
1360 dprint(FD_NET, "starting server\n");
1361
1362 if (!bind_sock)
1363 sk = fio_init_server_ip();
1364 else
1365 sk = fio_init_server_sock();
1366
1367 if (sk < 0)
1368 return sk;
1369
811826be
JA
1370 if (!bind_sock) {
1371 char *p, port[16];
1372 const void *src;
1373 int af;
1374
1375 if (use_ipv6) {
1376 af = AF_INET6;
1377 src = &saddr_in6.sin6_addr;
1378 } else {
1379 af = AF_INET;
1380 src = &saddr_in.sin_addr;
1381 }
1382
1383 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1384
1385 sprintf(port, ",%u", fio_net_port);
1386 if (p)
1387 strcat(p, port);
1388 else
1389 strcpy(bind_str, port);
1390 } else
bebe6398
JA
1391 strcpy(bind_str, bind_sock);
1392
1393 log_info("fio: server listening on %s\n", bind_str);
1394
89c1707c 1395 if (listen(sk, 0) < 0) {
81179eec 1396 log_err("fio: listen: %s\n", strerror(errno));
2fd973c9 1397 close(sk);
81179eec
JA
1398 return -1;
1399 }
1400
87aa8f19
JA
1401 return sk;
1402}
1403
3aa3ceeb 1404int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
3ec62ec4
JA
1405 struct in6_addr *inp6)
1406
1407{
1408 int ret = 0;
1409
3aa3ceeb 1410 if (ipv6)
3ec62ec4
JA
1411 ret = inet_pton(AF_INET6, host, inp6);
1412 else
1413 ret = inet_pton(AF_INET, host, inp);
1414
1415 if (ret != 1) {
479471c4
JA
1416 struct addrinfo hints, *res;
1417
1418 memset(&hints, 0, sizeof(hints));
3aa3ceeb 1419 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
479471c4 1420 hints.ai_socktype = SOCK_STREAM;
3ec62ec4 1421
479471c4
JA
1422 ret = getaddrinfo(host, NULL, &hints, &res);
1423 if (ret) {
1424 log_err("fio: failed to resolve <%s> (%s)\n", host,
1425 gai_strerror(ret));
3caf43e3 1426 return 1;
3ec62ec4
JA
1427 }
1428
3aa3ceeb 1429 if (ipv6)
479471c4
JA
1430 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1431 else
1432 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1433
3ec62ec4 1434 ret = 1;
479471c4 1435 freeaddrinfo(res);
3ec62ec4
JA
1436 }
1437
1438 return !(ret == 1);
1439}
1440
660a2bfb
JA
1441/*
1442 * Parse a host/ip/port string. Reads from 'str'.
1443 *
1444 * Outputs:
1445 *
1446 * For IPv4:
1447 * *ptr is the host, *port is the port, inp is the destination.
1448 * For IPv6:
1449 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1450 * For local domain sockets:
1451 * *ptr is the filename, *is_sock is 1.
1452 */
bebe6398 1453int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
811826be
JA
1454 int *port, struct in_addr *inp,
1455 struct in6_addr *inp6, int *ipv6)
bebe6398 1456{
76867621
JA
1457 const char *host = str;
1458 char *portp;
3ec62ec4 1459 int lport = 0;
76867621 1460
bebe6398
JA
1461 *ptr = NULL;
1462 *is_sock = 0;
6d2cf394 1463 *port = fio_net_port;
811826be 1464 *ipv6 = 0;
bebe6398
JA
1465
1466 if (!strncmp(str, "sock:", 5)) {
1467 *ptr = strdup(str + 5);
1468 *is_sock = 1;
76867621
JA
1469
1470 return 0;
1471 }
1472
1473 /*
1474 * Is it ip:<ip or host>:port
1475 */
1476 if (!strncmp(host, "ip:", 3))
1477 host += 3;
1478 else if (!strncmp(host, "ip4:", 4))
1479 host += 4;
1480 else if (!strncmp(host, "ip6:", 4)) {
1481 host += 4;
1482 *ipv6 = 1;
1483 } else if (host[0] == ':') {
1484 /* String is :port */
1485 host++;
1486 lport = atoi(host);
1487 if (!lport || lport > 65535) {
4e0a8fa2 1488 log_err("fio: bad server port %u\n", lport);
76867621
JA
1489 return 1;
1490 }
1491 /* no hostname given, we are done */
1492 *port = lport;
1493 return 0;
1494 }
1495
1496 /*
b96b90c3 1497 * If no port seen yet, check if there's a last ',' at the end
76867621
JA
1498 */
1499 if (!lport) {
1500 portp = strchr(host, ',');
1501 if (portp) {
1502 *portp = '\0';
1503 portp++;
1504 lport = atoi(portp);
bebe6398 1505 if (!lport || lport > 65535) {
4e0a8fa2 1506 log_err("fio: bad server port %u\n", lport);
bebe6398
JA
1507 return 1;
1508 }
bebe6398 1509 }
76867621 1510 }
bebe6398 1511
76867621
JA
1512 if (lport)
1513 *port = lport;
bebe6398 1514
76867621
JA
1515 if (!strlen(host))
1516 return 0;
bebe6398 1517
76867621 1518 *ptr = strdup(host);
811826be 1519
3aa3ceeb 1520 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
3ec62ec4
JA
1521 free(*ptr);
1522 *ptr = NULL;
1523 return 1;
bebe6398
JA
1524 }
1525
1526 if (*port == 0)
1527 *port = fio_net_port;
1528
1529 return 0;
1530}
1531
87aa8f19
JA
1532/*
1533 * Server arg should be one of:
1534 *
1535 * sock:/path/to/socket
1536 * ip:1.2.3.4
1537 * 1.2.3.4
1538 *
1539 * Where sock uses unix domain sockets, and ip binds the server to
1540 * a specific interface. If no arguments are given to the server, it
1541 * uses IP and binds to 0.0.0.0.
1542 *
1543 */
1544static int fio_handle_server_arg(void)
1545{
6d2cf394 1546 int port = fio_net_port;
a7de0a11 1547 int is_sock, ret = 0;
bebe6398 1548
87aa8f19
JA
1549 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1550
1551 if (!fio_server_arg)
a7de0a11 1552 goto out;
87aa8f19 1553
4e5b8fb8 1554 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
811826be
JA
1555 &port, &saddr_in.sin_addr,
1556 &saddr_in6.sin6_addr, &use_ipv6);
4e5b8fb8
JA
1557
1558 if (!is_sock && bind_sock) {
1559 free(bind_sock);
1560 bind_sock = NULL;
1561 }
1562
a7de0a11 1563out:
6d2cf394
JA
1564 fio_net_port = port;
1565 saddr_in.sin_port = htons(port);
811826be 1566 saddr_in6.sin6_port = htons(port);
4e5b8fb8 1567 return ret;
87aa8f19
JA
1568}
1569
43cdea1d
JA
1570static void sig_int(int sig)
1571{
1572 if (bind_sock)
1573 unlink(bind_sock);
1574}
1575
1576static void set_sig_handlers(void)
1577{
1578 struct sigaction act;
1579
1580 memset(&act, 0, sizeof(act));
1581 act.sa_handler = sig_int;
1582 act.sa_flags = SA_RESTART;
1583 sigaction(SIGINT, &act, NULL);
1584}
1585
87aa8f19
JA
1586static int fio_server(void)
1587{
1588 int sk, ret;
1589
1590 dprint(FD_NET, "starting server\n");
1591
1592 if (fio_handle_server_arg())
1593 return -1;
1594
1595 sk = fio_init_server_connection();
1596 if (sk < 0)
1597 return -1;
81179eec 1598
43cdea1d
JA
1599 set_sig_handlers();
1600
81179eec 1601 ret = accept_loop(sk);
87aa8f19 1602
81179eec 1603 close(sk);
87aa8f19
JA
1604
1605 if (fio_server_arg) {
1606 free(fio_server_arg);
1607 fio_server_arg = NULL;
1608 }
bebe6398
JA
1609 if (bind_sock)
1610 free(bind_sock);
87aa8f19 1611
81179eec
JA
1612 return ret;
1613}
1614
7b821684 1615void fio_server_got_signal(int signal)
9abea48b 1616{
7b821684
JA
1617 if (signal == SIGPIPE)
1618 server_fd = -1;
1619 else {
1620 log_info("\nfio: terminating on signal %d\n", signal);
1621 exit_backend = 1;
1622 }
9abea48b
JA
1623}
1624
13755d94
JA
1625static int check_existing_pidfile(const char *pidfile)
1626{
1627 struct stat sb;
1628 char buf[16];
1629 pid_t pid;
1630 FILE *f;
1631
1632 if (stat(pidfile, &sb))
1633 return 0;
1634
1635 f = fopen(pidfile, "r");
1636 if (!f)
1637 return 0;
1638
bfc3b179 1639 if (fread(buf, sb.st_size, 1, f) <= 0) {
13755d94
JA
1640 fclose(f);
1641 return 1;
1642 }
1643 fclose(f);
1644
1645 pid = atoi(buf);
1646 if (kill(pid, SIGCONT) < 0)
ea5aa1be 1647 return errno != ESRCH;
13755d94
JA
1648
1649 return 1;
1650}
1651
1652static int write_pid(pid_t pid, const char *pidfile)
402668f3
JA
1653{
1654 FILE *fpid;
1655
1656 fpid = fopen(pidfile, "w");
1657 if (!fpid) {
1658 log_err("fio: failed opening pid file %s\n", pidfile);
13755d94 1659 return 1;
402668f3
JA
1660 }
1661
1662 fprintf(fpid, "%u\n", (unsigned int) pid);
13755d94
JA
1663 fclose(fpid);
1664 return 0;
402668f3
JA
1665}
1666
1667/*
1668 * If pidfile is specified, background us.
1669 */
1670int fio_start_server(char *pidfile)
e46d8091
JA
1671{
1672 pid_t pid;
402668f3 1673 int ret;
e46d8091 1674
93bcfd20 1675#if defined(WIN32)
905c78b9 1676 WSADATA wsd;
3c3ed070 1677 WSAStartup(MAKEWORD(2, 2), &wsd);
93bcfd20
BC
1678#endif
1679
402668f3 1680 if (!pidfile)
e46d8091
JA
1681 return fio_server();
1682
13755d94
JA
1683 if (check_existing_pidfile(pidfile)) {
1684 log_err("fio: pidfile %s exists and server appears alive\n",
1685 pidfile);
b8ba87ac 1686 free(pidfile);
13755d94
JA
1687 return -1;
1688 }
1689
e46d8091
JA
1690 pid = fork();
1691 if (pid < 0) {
13755d94 1692 log_err("fio: failed server fork: %s", strerror(errno));
402668f3 1693 free(pidfile);
c28e8e8c 1694 return -1;
402668f3 1695 } else if (pid) {
13755d94
JA
1696 int ret = write_pid(pid, pidfile);
1697
b8ba87ac 1698 free(pidfile);
13755d94 1699 exit(ret);
402668f3 1700 }
e46d8091
JA
1701
1702 setsid();
13755d94
JA
1703 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1704 log_syslog = 1;
e46d8091
JA
1705 close(STDIN_FILENO);
1706 close(STDOUT_FILENO);
1707 close(STDERR_FILENO);
1708 f_out = NULL;
1709 f_err = NULL;
402668f3
JA
1710
1711 ret = fio_server();
1712
1713 closelog();
1714 unlink(pidfile);
1715 free(pidfile);
1716 return ret;
e46d8091 1717}
87aa8f19 1718
bebe6398 1719void fio_server_set_arg(const char *arg)
87aa8f19
JA
1720{
1721 fio_server_arg = strdup(arg);
1722}