Commit | Line | Data |
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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> | |
50d16976 JA |
14 | #include <netinet/in.h> |
15 | #include <arpa/inet.h> | |
16 | #include <netdb.h> | |
e46d8091 | 17 | #include <syslog.h> |
9e22ecb0 | 18 | #include <signal.h> |
50d16976 JA |
19 | |
20 | #include "fio.h" | |
132159a5 | 21 | #include "server.h" |
fcee5ff6 | 22 | #include "crc/crc16.h" |
c7c6cb4c | 23 | #include "lib/ieee754.h" |
89cf1480 JA |
24 | |
25 | #include "fio_version.h" | |
50d16976 | 26 | |
132159a5 | 27 | int fio_net_port = 8765; |
50d16976 | 28 | |
009b1be4 JA |
29 | int exit_backend = 0; |
30 | ||
46c48f1f | 31 | static int server_fd = -1; |
87aa8f19 JA |
32 | static char *fio_server_arg; |
33 | static char *bind_sock; | |
34 | static struct sockaddr_in saddr_in; | |
01be038e | 35 | static int first_cmd_check; |
37db14fe | 36 | |
89c1707c JA |
37 | static const char *fio_server_ops[FIO_NET_CMD_NR] = { |
38 | "", | |
39 | "QUIT", | |
40 | "EXIT", | |
41 | "JOB", | |
42 | "JOBLINE", | |
43 | "TEXT", | |
44 | "TS", | |
45 | "GS", | |
46 | "SEND_ETA", | |
47 | "ETA", | |
48 | "PROBE", | |
49 | "START", | |
d09a64a0 JA |
50 | "STOP", |
51 | "DISK_UTIL", | |
01be038e | 52 | "RUN", |
89c1707c JA |
53 | }; |
54 | ||
55 | const char *fio_server_op(unsigned int op) | |
56 | { | |
57 | static char buf[32]; | |
58 | ||
59 | if (op < FIO_NET_CMD_NR) | |
60 | return fio_server_ops[op]; | |
61 | ||
62 | sprintf(buf, "UNKNOWN/%d", op); | |
63 | return buf; | |
64 | } | |
65 | ||
132159a5 JA |
66 | int fio_send_data(int sk, const void *p, unsigned int len) |
67 | { | |
794d69ca JA |
68 | assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU); |
69 | ||
132159a5 JA |
70 | do { |
71 | int ret = send(sk, p, len, 0); | |
72 | ||
73 | if (ret > 0) { | |
74 | len -= ret; | |
75 | if (!len) | |
76 | break; | |
77 | p += ret; | |
78 | continue; | |
79 | } else if (!ret) | |
80 | break; | |
81 | else if (errno == EAGAIN || errno == EINTR) | |
82 | continue; | |
7b821684 JA |
83 | else |
84 | break; | |
132159a5 JA |
85 | } while (!exit_backend); |
86 | ||
87 | if (!len) | |
88 | return 0; | |
89 | ||
90 | return 1; | |
91 | } | |
92 | ||
93 | int fio_recv_data(int sk, void *p, unsigned int len) | |
94 | { | |
95 | do { | |
96 | int ret = recv(sk, p, len, MSG_WAITALL); | |
97 | ||
98 | if (ret > 0) { | |
99 | len -= ret; | |
100 | if (!len) | |
101 | break; | |
102 | p += ret; | |
103 | continue; | |
104 | } else if (!ret) | |
105 | break; | |
106 | else if (errno == EAGAIN || errno == EINTR) | |
107 | continue; | |
7b821684 JA |
108 | else |
109 | break; | |
132159a5 JA |
110 | } while (!exit_backend); |
111 | ||
112 | if (!len) | |
113 | return 0; | |
114 | ||
115 | return -1; | |
116 | } | |
117 | ||
118 | static int verify_convert_cmd(struct fio_net_cmd *cmd) | |
119 | { | |
fcee5ff6 | 120 | uint16_t crc; |
132159a5 | 121 | |
fcee5ff6 JA |
122 | cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); |
123 | cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); | |
132159a5 | 124 | |
fcee5ff6 JA |
125 | crc = crc16(cmd, FIO_NET_CMD_CRC_SZ); |
126 | if (crc != cmd->cmd_crc16) { | |
132159a5 | 127 | log_err("fio: server bad crc on command (got %x, wanted %x)\n", |
fcee5ff6 | 128 | cmd->cmd_crc16, crc); |
132159a5 JA |
129 | return 1; |
130 | } | |
131 | ||
132 | cmd->version = le16_to_cpu(cmd->version); | |
133 | cmd->opcode = le16_to_cpu(cmd->opcode); | |
134 | cmd->flags = le32_to_cpu(cmd->flags); | |
af9c9fb3 | 135 | cmd->tag = le64_to_cpu(cmd->tag); |
132159a5 JA |
136 | cmd->pdu_len = le32_to_cpu(cmd->pdu_len); |
137 | ||
138 | switch (cmd->version) { | |
fa2ea806 | 139 | case FIO_SERVER_VER: |
132159a5 JA |
140 | break; |
141 | default: | |
142 | log_err("fio: bad server cmd version %d\n", cmd->version); | |
143 | return 1; | |
144 | } | |
145 | ||
146 | if (cmd->pdu_len > FIO_SERVER_MAX_PDU) { | |
147 | log_err("fio: command payload too large: %u\n", cmd->pdu_len); | |
148 | return 1; | |
149 | } | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
a64e88da JA |
154 | /* |
155 | * Read (and defragment, if necessary) incoming commands | |
156 | */ | |
e951bdc4 | 157 | struct fio_net_cmd *fio_net_recv_cmd(int sk) |
132159a5 | 158 | { |
a64e88da JA |
159 | struct fio_net_cmd cmd, *cmdret = NULL; |
160 | size_t cmd_size = 0, pdu_offset = 0; | |
fcee5ff6 | 161 | uint16_t crc; |
a64e88da JA |
162 | int ret, first = 1; |
163 | void *pdu = NULL; | |
132159a5 | 164 | |
a64e88da JA |
165 | do { |
166 | ret = fio_recv_data(sk, &cmd, sizeof(cmd)); | |
167 | if (ret) | |
168 | break; | |
132159a5 | 169 | |
a64e88da JA |
170 | /* We have a command, verify it and swap if need be */ |
171 | ret = verify_convert_cmd(&cmd); | |
172 | if (ret) | |
173 | break; | |
132159a5 | 174 | |
0b8f30a5 JA |
175 | if (first) { |
176 | /* if this is text, add room for \0 at the end */ | |
177 | cmd_size = sizeof(cmd) + cmd.pdu_len + 1; | |
178 | assert(!cmdret); | |
179 | } else | |
a64e88da | 180 | cmd_size += cmd.pdu_len; |
132159a5 | 181 | |
a64e88da | 182 | cmdret = realloc(cmdret, cmd_size); |
132159a5 | 183 | |
a64e88da JA |
184 | if (first) |
185 | memcpy(cmdret, &cmd, sizeof(cmd)); | |
67f15dcf JA |
186 | else if (cmdret->opcode != cmd.opcode) { |
187 | log_err("fio: fragment opcode mismatch (%d != %d)\n", | |
188 | cmdret->opcode, cmd.opcode); | |
189 | ret = 1; | |
190 | break; | |
191 | } | |
a64e88da JA |
192 | |
193 | if (!cmd.pdu_len) | |
194 | break; | |
195 | ||
196 | /* There's payload, get it */ | |
197 | pdu = (void *) cmdret->payload + pdu_offset; | |
198 | ret = fio_recv_data(sk, pdu, cmd.pdu_len); | |
199 | if (ret) | |
200 | break; | |
201 | ||
202 | /* Verify payload crc */ | |
203 | crc = crc16(pdu, cmd.pdu_len); | |
204 | if (crc != cmd.pdu_crc16) { | |
205 | log_err("fio: server bad crc on payload "); | |
206 | log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); | |
207 | ret = 1; | |
208 | break; | |
209 | } | |
210 | ||
211 | pdu_offset += cmd.pdu_len; | |
817f06bb JA |
212 | if (!first) |
213 | cmdret->pdu_len += cmd.pdu_len; | |
a64e88da JA |
214 | first = 0; |
215 | } while (cmd.flags & FIO_NET_CMD_F_MORE); | |
132159a5 | 216 | |
a64e88da JA |
217 | if (ret) { |
218 | free(cmdret); | |
219 | cmdret = NULL; | |
0b8f30a5 JA |
220 | } else if (cmdret) { |
221 | /* zero-terminate text input */ | |
222 | if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT || | |
223 | cmdret->opcode == FIO_NET_CMD_JOB)) { | |
224 | char *buf = (char *) cmdret->payload; | |
225 | ||
226 | buf[cmdret->pdu_len ] = '\0'; | |
227 | } | |
228 | /* frag flag is internal */ | |
a64e88da | 229 | cmdret->flags &= ~FIO_NET_CMD_F_MORE; |
0b8f30a5 | 230 | } |
a64e88da JA |
231 | |
232 | return cmdret; | |
132159a5 JA |
233 | } |
234 | ||
235 | void fio_net_cmd_crc(struct fio_net_cmd *cmd) | |
236 | { | |
237 | uint32_t pdu_len; | |
238 | ||
ddcc0b69 | 239 | cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ)); |
132159a5 JA |
240 | |
241 | pdu_len = le32_to_cpu(cmd->pdu_len); | |
242 | if (pdu_len) | |
ddcc0b69 | 243 | cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len)); |
132159a5 JA |
244 | } |
245 | ||
af9c9fb3 JA |
246 | int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size, |
247 | uint64_t tag) | |
794d69ca | 248 | { |
7f868316 JA |
249 | struct fio_net_cmd *cmd = NULL; |
250 | size_t this_len, cur_len = 0; | |
794d69ca JA |
251 | int ret; |
252 | ||
253 | do { | |
254 | this_len = size; | |
255 | if (this_len > FIO_SERVER_MAX_PDU) | |
256 | this_len = FIO_SERVER_MAX_PDU; | |
257 | ||
7f868316 JA |
258 | if (!cmd || cur_len < sizeof(*cmd) + this_len) { |
259 | if (cmd) | |
260 | free(cmd); | |
261 | ||
262 | cur_len = sizeof(*cmd) + this_len; | |
263 | cmd = malloc(cur_len); | |
264 | } | |
794d69ca | 265 | |
af9c9fb3 | 266 | fio_init_net_cmd(cmd, opcode, buf, this_len, tag); |
794d69ca JA |
267 | |
268 | if (this_len < size) | |
ddcc0b69 | 269 | cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); |
794d69ca JA |
270 | |
271 | fio_net_cmd_crc(cmd); | |
272 | ||
273 | ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); | |
794d69ca JA |
274 | size -= this_len; |
275 | buf += this_len; | |
276 | } while (!ret && size); | |
277 | ||
7f868316 JA |
278 | if (cmd) |
279 | free(cmd); | |
280 | ||
794d69ca JA |
281 | return ret; |
282 | } | |
283 | ||
89c1707c | 284 | static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag) |
132159a5 | 285 | { |
178cde9f | 286 | struct fio_net_cmd cmd; |
132159a5 | 287 | |
af9c9fb3 | 288 | fio_init_net_cmd(&cmd, opcode, NULL, 0, tag); |
132159a5 JA |
289 | fio_net_cmd_crc(&cmd); |
290 | ||
291 | return fio_send_data(sk, &cmd, sizeof(cmd)); | |
292 | } | |
293 | ||
89c1707c JA |
294 | /* |
295 | * If 'list' is non-NULL, then allocate and store the sent command for | |
296 | * later verification. | |
297 | */ | |
298 | int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag, | |
299 | struct flist_head *list) | |
300 | { | |
301 | struct fio_net_int_cmd *cmd; | |
302 | int ret; | |
303 | ||
304 | if (!list) | |
305 | return fio_net_send_simple_stack_cmd(sk, opcode, tag); | |
306 | ||
307 | cmd = malloc(sizeof(*cmd)); | |
308 | ||
df380934 | 309 | fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd); |
89c1707c JA |
310 | fio_net_cmd_crc(&cmd->cmd); |
311 | ||
312 | INIT_FLIST_HEAD(&cmd->list); | |
313 | gettimeofday(&cmd->tv, NULL); | |
314 | cmd->saved_tag = tag; | |
315 | ||
316 | ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd)); | |
317 | if (ret) { | |
318 | free(cmd); | |
319 | return ret; | |
320 | } | |
321 | ||
322 | flist_add_tail(&cmd->list, list); | |
323 | return 0; | |
324 | } | |
325 | ||
9abea48b | 326 | static int fio_server_send_quit_cmd(void) |
437377e1 | 327 | { |
46c48f1f | 328 | dprint(FD_NET, "server: sending quit\n"); |
89c1707c | 329 | return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL); |
437377e1 JA |
330 | } |
331 | ||
0b8f30a5 | 332 | static int handle_job_cmd(struct fio_net_cmd *cmd) |
132159a5 | 333 | { |
0b8f30a5 | 334 | char *buf = (char *) cmd->payload; |
11e950bd JA |
335 | struct cmd_start_pdu spdu; |
336 | struct cmd_end_pdu epdu; | |
a64e88da | 337 | int ret; |
132159a5 | 338 | |
e6d1c668 JA |
339 | if (parse_jobs_ini(buf, 1, 0)) { |
340 | fio_server_send_quit_cmd(); | |
81179eec | 341 | return -1; |
e6d1c668 | 342 | } |
81179eec | 343 | |
11e950bd JA |
344 | spdu.jobs = cpu_to_le32(thread_number); |
345 | fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0); | |
81179eec JA |
346 | |
347 | ret = exec_run(); | |
11e950bd JA |
348 | |
349 | epdu.error = ret; | |
350 | fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0); | |
351 | ||
9abea48b | 352 | fio_server_send_quit_cmd(); |
81179eec JA |
353 | reset_fio_state(); |
354 | return ret; | |
355 | } | |
356 | ||
357 | static int handle_jobline_cmd(struct fio_net_cmd *cmd) | |
358 | { | |
fa2ea806 JA |
359 | void *pdu = cmd->payload; |
360 | struct cmd_single_line_pdu *cslp; | |
361 | struct cmd_line_pdu *clp; | |
362 | unsigned long offset; | |
363 | char **argv; | |
81179eec JA |
364 | int ret, i; |
365 | ||
fa2ea806 JA |
366 | clp = pdu; |
367 | clp->lines = le16_to_cpu(clp->lines); | |
368 | argv = malloc(clp->lines * sizeof(char *)); | |
369 | offset = sizeof(*clp); | |
81179eec | 370 | |
fa2ea806 | 371 | dprint(FD_NET, "server: %d command line args\n", clp->lines); |
39e8e016 | 372 | |
fa2ea806 JA |
373 | for (i = 0; i < clp->lines; i++) { |
374 | cslp = pdu + offset; | |
375 | argv[i] = (char *) cslp->text; | |
376 | ||
377 | offset += sizeof(*cslp) + le16_to_cpu(cslp->len); | |
39e8e016 JA |
378 | dprint(FD_NET, "server: %d: %s\n", i, argv[i]); |
379 | } | |
81179eec | 380 | |
fa2ea806 | 381 | if (parse_cmd_line(clp->lines, argv)) { |
e6d1c668 | 382 | fio_server_send_quit_cmd(); |
fa2ea806 | 383 | free(argv); |
81179eec | 384 | return -1; |
e6d1c668 | 385 | } |
81179eec | 386 | |
fa2ea806 JA |
387 | free(argv); |
388 | ||
89c1707c | 389 | fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL); |
81179eec | 390 | |
794d69ca | 391 | ret = exec_run(); |
9abea48b | 392 | fio_server_send_quit_cmd(); |
794d69ca | 393 | reset_fio_state(); |
132159a5 JA |
394 | return ret; |
395 | } | |
396 | ||
c28e8e8c JA |
397 | static int handle_probe_cmd(struct fio_net_cmd *cmd) |
398 | { | |
399 | struct cmd_probe_pdu probe; | |
400 | ||
89c1707c JA |
401 | dprint(FD_NET, "server: sending probe reply\n"); |
402 | ||
c28e8e8c JA |
403 | memset(&probe, 0, sizeof(probe)); |
404 | gethostname((char *) probe.hostname, sizeof(probe.hostname)); | |
6eb24791 JA |
405 | #ifdef FIO_BIG_ENDIAN |
406 | probe.bigendian = 1; | |
407 | #endif | |
81179eec JA |
408 | probe.fio_major = FIO_MAJOR; |
409 | probe.fio_minor = FIO_MINOR; | |
410 | probe.fio_patch = FIO_PATCH; | |
c28e8e8c | 411 | |
cca84643 JA |
412 | probe.os = FIO_OS; |
413 | probe.arch = FIO_ARCH; | |
414 | ||
38fdef22 JA |
415 | probe.bpp = sizeof(void *); |
416 | ||
89c1707c | 417 | return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag); |
af9c9fb3 JA |
418 | } |
419 | ||
420 | static int handle_send_eta_cmd(struct fio_net_cmd *cmd) | |
421 | { | |
422 | struct jobs_eta *je; | |
423 | size_t size; | |
af9c9fb3 JA |
424 | int i; |
425 | ||
b814fb26 JA |
426 | if (!thread_number) |
427 | return 0; | |
428 | ||
429 | size = sizeof(*je) + thread_number * sizeof(char) + 1; | |
7f868316 JA |
430 | je = malloc(size); |
431 | memset(je, 0, size); | |
af9c9fb3 JA |
432 | |
433 | if (!calc_thread_status(je, 1)) { | |
434 | free(je); | |
435 | return 0; | |
436 | } | |
437 | ||
438 | dprint(FD_NET, "server sending status\n"); | |
439 | ||
440 | je->nr_running = cpu_to_le32(je->nr_running); | |
441 | je->nr_ramp = cpu_to_le32(je->nr_ramp); | |
442 | je->nr_pending = cpu_to_le32(je->nr_pending); | |
443 | je->files_open = cpu_to_le32(je->files_open); | |
444 | je->m_rate = cpu_to_le32(je->m_rate); | |
445 | je->t_rate = cpu_to_le32(je->t_rate); | |
446 | je->m_iops = cpu_to_le32(je->m_iops); | |
447 | je->t_iops = cpu_to_le32(je->t_iops); | |
448 | ||
449 | for (i = 0; i < 2; i++) { | |
450 | je->rate[i] = cpu_to_le32(je->rate[i]); | |
451 | je->iops[i] = cpu_to_le32(je->iops[i]); | |
452 | } | |
453 | ||
454 | je->elapsed_sec = cpu_to_le32(je->nr_running); | |
455 | je->eta_sec = cpu_to_le64(je->eta_sec); | |
456 | ||
7f868316 | 457 | fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag); |
af9c9fb3 JA |
458 | free(je); |
459 | return 0; | |
c28e8e8c JA |
460 | } |
461 | ||
132159a5 JA |
462 | static int handle_command(struct fio_net_cmd *cmd) |
463 | { | |
464 | int ret; | |
465 | ||
89c1707c JA |
466 | dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n", |
467 | fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag); | |
46c48f1f | 468 | |
132159a5 JA |
469 | switch (cmd->opcode) { |
470 | case FIO_NET_CMD_QUIT: | |
cc0df00a | 471 | fio_terminate_threads(TERMINATE_ALL); |
c28e8e8c | 472 | return -1; |
d7959186 | 473 | case FIO_NET_CMD_EXIT: |
132159a5 | 474 | exit_backend = 1; |
c28e8e8c | 475 | return -1; |
132159a5 | 476 | case FIO_NET_CMD_JOB: |
0b8f30a5 | 477 | ret = handle_job_cmd(cmd); |
132159a5 | 478 | break; |
81179eec JA |
479 | case FIO_NET_CMD_JOBLINE: |
480 | ret = handle_jobline_cmd(cmd); | |
481 | break; | |
c28e8e8c JA |
482 | case FIO_NET_CMD_PROBE: |
483 | ret = handle_probe_cmd(cmd); | |
484 | break; | |
af9c9fb3 JA |
485 | case FIO_NET_CMD_SEND_ETA: |
486 | ret = handle_send_eta_cmd(cmd); | |
487 | break; | |
132159a5 | 488 | default: |
89c1707c | 489 | log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode)); |
132159a5 JA |
490 | ret = 1; |
491 | } | |
492 | ||
493 | return ret; | |
494 | } | |
495 | ||
70e0c316 | 496 | static int handle_connection(int sk, int block) |
132159a5 JA |
497 | { |
498 | struct fio_net_cmd *cmd = NULL; | |
499 | int ret = 0; | |
500 | ||
501 | /* read forever */ | |
502 | while (!exit_backend) { | |
e951bdc4 JA |
503 | struct pollfd pfd = { |
504 | .fd = sk, | |
505 | .events = POLLIN, | |
506 | }; | |
507 | ||
508 | ret = 0; | |
509 | do { | |
510 | ret = poll(&pfd, 1, 100); | |
511 | if (ret < 0) { | |
512 | if (errno == EINTR) | |
513 | break; | |
514 | log_err("fio: poll: %s\n", strerror(errno)); | |
515 | break; | |
19c65179 JA |
516 | } else if (!ret) { |
517 | if (!block) | |
518 | return 0; | |
e951bdc4 | 519 | continue; |
19c65179 | 520 | } |
e951bdc4 JA |
521 | |
522 | if (pfd.revents & POLLIN) | |
523 | break; | |
524 | if (pfd.revents & (POLLERR|POLLHUP)) { | |
525 | ret = 1; | |
526 | break; | |
527 | } | |
19c65179 | 528 | } while (!exit_backend); |
e951bdc4 JA |
529 | |
530 | if (ret < 0) | |
531 | break; | |
532 | ||
533 | cmd = fio_net_recv_cmd(sk); | |
132159a5 | 534 | if (!cmd) { |
c28e8e8c | 535 | ret = -1; |
132159a5 JA |
536 | break; |
537 | } | |
538 | ||
132159a5 JA |
539 | ret = handle_command(cmd); |
540 | if (ret) | |
541 | break; | |
542 | ||
543 | free(cmd); | |
c77a99e7 | 544 | cmd = NULL; |
132159a5 JA |
545 | } |
546 | ||
547 | if (cmd) | |
548 | free(cmd); | |
549 | ||
550 | return ret; | |
551 | } | |
552 | ||
cc0df00a JA |
553 | void fio_server_idle_loop(void) |
554 | { | |
01be038e JA |
555 | if (!first_cmd_check) |
556 | fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL); | |
cc0df00a | 557 | if (server_fd != -1) |
70e0c316 | 558 | handle_connection(server_fd, 0); |
cc0df00a JA |
559 | } |
560 | ||
50d16976 JA |
561 | static int accept_loop(int listen_sk) |
562 | { | |
bb447a27 | 563 | struct sockaddr_in addr; |
5ba13ea6 | 564 | fio_socklen_t len = sizeof(addr); |
009b1be4 | 565 | struct pollfd pfd; |
132159a5 | 566 | int ret, sk, flags, exitval = 0; |
50d16976 | 567 | |
60efd14e JA |
568 | dprint(FD_NET, "server enter accept loop\n"); |
569 | ||
009b1be4 JA |
570 | flags = fcntl(listen_sk, F_GETFL); |
571 | flags |= O_NONBLOCK; | |
572 | fcntl(listen_sk, F_SETFL, flags); | |
50d16976 | 573 | again: |
009b1be4 JA |
574 | pfd.fd = listen_sk; |
575 | pfd.events = POLLIN; | |
576 | do { | |
577 | ret = poll(&pfd, 1, 100); | |
578 | if (ret < 0) { | |
579 | if (errno == EINTR) | |
580 | break; | |
fcee5ff6 | 581 | log_err("fio: poll: %s\n", strerror(errno)); |
009b1be4 JA |
582 | goto out; |
583 | } else if (!ret) | |
584 | continue; | |
585 | ||
586 | if (pfd.revents & POLLIN) | |
587 | break; | |
588 | } while (!exit_backend); | |
589 | ||
590 | if (exit_backend) | |
591 | goto out; | |
592 | ||
6b976bfc | 593 | sk = accept(listen_sk, (struct sockaddr *) &addr, &len); |
50d16976 | 594 | if (sk < 0) { |
690e09ae | 595 | log_err("fio: accept: %s\n", strerror(errno)); |
50d16976 JA |
596 | return -1; |
597 | } | |
598 | ||
bb447a27 | 599 | dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr)); |
46c48f1f | 600 | |
37db14fe JA |
601 | server_fd = sk; |
602 | ||
70e0c316 | 603 | exitval = handle_connection(sk, 1); |
50d16976 | 604 | |
37db14fe | 605 | server_fd = -1; |
50d16976 | 606 | close(sk); |
5c341e9a | 607 | |
009b1be4 | 608 | if (!exit_backend) |
5c341e9a JA |
609 | goto again; |
610 | ||
009b1be4 | 611 | out: |
132159a5 | 612 | return exitval; |
50d16976 JA |
613 | } |
614 | ||
13755d94 | 615 | int fio_server_text_output(const char *buf, size_t len) |
37db14fe | 616 | { |
337d75a8 | 617 | if (server_fd != -1) |
af9c9fb3 | 618 | return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0); |
337d75a8 | 619 | |
13755d94 | 620 | return log_local_buf(buf, len); |
142575e6 JA |
621 | } |
622 | ||
a64e88da JA |
623 | static void convert_io_stat(struct io_stat *dst, struct io_stat *src) |
624 | { | |
625 | dst->max_val = cpu_to_le64(src->max_val); | |
626 | dst->min_val = cpu_to_le64(src->min_val); | |
627 | dst->samples = cpu_to_le64(src->samples); | |
802ad4a8 JA |
628 | |
629 | /* | |
630 | * Encode to IEEE 754 for network transfer | |
631 | */ | |
632 | dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f)); | |
633 | dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f)); | |
a64e88da JA |
634 | } |
635 | ||
636 | static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) | |
637 | { | |
638 | int i; | |
639 | ||
640 | for (i = 0; i < 2; i++) { | |
641 | dst->max_run[i] = cpu_to_le64(src->max_run[i]); | |
642 | dst->min_run[i] = cpu_to_le64(src->min_run[i]); | |
643 | dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); | |
644 | dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); | |
645 | dst->io_kb[i] = cpu_to_le64(src->io_kb[i]); | |
646 | dst->agg[i] = cpu_to_le64(src->agg[i]); | |
647 | } | |
648 | ||
649 | dst->kb_base = cpu_to_le32(src->kb_base); | |
650 | dst->groupid = cpu_to_le32(src->groupid); | |
651 | } | |
652 | ||
653 | /* | |
654 | * Send a CMD_TS, which packs struct thread_stat and group_run_stats | |
655 | * into a single payload. | |
656 | */ | |
657 | void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) | |
658 | { | |
659 | struct cmd_ts_pdu p; | |
660 | int i, j; | |
661 | ||
60efd14e JA |
662 | dprint(FD_NET, "server sending end stats\n"); |
663 | ||
317b3c8b JA |
664 | memset(&p, 0, sizeof(p)); |
665 | ||
a64e88da JA |
666 | strcpy(p.ts.name, ts->name); |
667 | strcpy(p.ts.verror, ts->verror); | |
668 | strcpy(p.ts.description, ts->description); | |
669 | ||
ddcc0b69 | 670 | p.ts.error = cpu_to_le32(ts->error); |
a64e88da | 671 | p.ts.groupid = cpu_to_le32(ts->groupid); |
ddcc0b69 | 672 | p.ts.pid = cpu_to_le32(ts->pid); |
a64e88da JA |
673 | p.ts.members = cpu_to_le32(ts->members); |
674 | ||
675 | for (i = 0; i < 2; i++) { | |
676 | convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); | |
677 | convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); | |
678 | convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); | |
679 | convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); | |
680 | } | |
681 | ||
682 | p.ts.usr_time = cpu_to_le64(ts->usr_time); | |
683 | p.ts.sys_time = cpu_to_le64(ts->sys_time); | |
684 | p.ts.ctx = cpu_to_le64(ts->ctx); | |
685 | p.ts.minf = cpu_to_le64(ts->minf); | |
686 | p.ts.majf = cpu_to_le64(ts->majf); | |
687 | p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); | |
802ad4a8 JA |
688 | |
689 | for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { | |
cfc03e46 JA |
690 | fio_fp64_t *src = &ts->percentile_list[i]; |
691 | fio_fp64_t *dst = &p.ts.percentile_list[i]; | |
802ad4a8 | 692 | |
cfc03e46 | 693 | dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f)); |
802ad4a8 | 694 | } |
a64e88da JA |
695 | |
696 | for (i = 0; i < FIO_IO_U_MAP_NR; i++) { | |
697 | p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); | |
698 | p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); | |
699 | p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); | |
700 | } | |
701 | ||
702 | for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { | |
703 | p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); | |
704 | p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); | |
705 | } | |
706 | ||
707 | for (i = 0; i < 2; i++) | |
708 | for (j = 0; j < FIO_IO_U_PLAT_NR; j++) | |
709 | p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); | |
710 | ||
711 | for (i = 0; i < 3; i++) { | |
712 | p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); | |
93eee04a | 713 | p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]); |
a64e88da JA |
714 | } |
715 | ||
93eee04a | 716 | p.ts.total_submit = cpu_to_le64(ts->total_submit); |
a64e88da JA |
717 | p.ts.total_complete = cpu_to_le64(ts->total_complete); |
718 | ||
719 | for (i = 0; i < 2; i++) { | |
720 | p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); | |
721 | p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); | |
722 | } | |
723 | ||
724 | p.ts.total_run_time = cpu_to_le64(ts->total_run_time); | |
725 | p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); | |
726 | p.ts.total_err_count = cpu_to_le64(ts->total_err_count); | |
ddcc0b69 JA |
727 | p.ts.first_error = cpu_to_le32(ts->first_error); |
728 | p.ts.kb_base = cpu_to_le32(ts->kb_base); | |
a64e88da JA |
729 | |
730 | convert_gs(&p.rs, rs); | |
731 | ||
af9c9fb3 | 732 | fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0); |
a64e88da JA |
733 | } |
734 | ||
735 | void fio_server_send_gs(struct group_run_stats *rs) | |
736 | { | |
737 | struct group_run_stats gs; | |
738 | ||
60efd14e JA |
739 | dprint(FD_NET, "server sending group run stats\n"); |
740 | ||
a64e88da | 741 | convert_gs(&gs, rs); |
af9c9fb3 | 742 | fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0); |
cf451d1e JA |
743 | } |
744 | ||
d09a64a0 JA |
745 | static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src) |
746 | { | |
747 | int i; | |
748 | ||
749 | for (i = 0; i < 2; i++) { | |
750 | dst->ios[i] = cpu_to_le32(src->ios[i]); | |
751 | dst->merges[i] = cpu_to_le32(src->merges[i]); | |
752 | dst->sectors[i] = cpu_to_le64(src->sectors[i]); | |
753 | dst->ticks[i] = cpu_to_le32(src->ticks[i]); | |
754 | } | |
755 | ||
756 | dst->io_ticks = cpu_to_le32(src->io_ticks); | |
757 | dst->time_in_queue = cpu_to_le32(src->time_in_queue); | |
758 | dst->slavecount = cpu_to_le32(src->slavecount); | |
759 | dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f)); | |
760 | } | |
761 | ||
762 | static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src) | |
763 | { | |
764 | int i; | |
765 | ||
766 | strcpy((char *) dst->name, (char *) src->name); | |
767 | ||
768 | for (i = 0; i < 2; i++) { | |
769 | dst->ios[i] = cpu_to_le32(src->ios[i]); | |
770 | dst->merges[i] = cpu_to_le32(src->merges[i]); | |
771 | dst->sectors[i] = cpu_to_le64(src->sectors[i]); | |
772 | dst->ticks[i] = cpu_to_le32(src->ticks[i]); | |
773 | } | |
774 | ||
775 | dst->io_ticks = cpu_to_le32(src->io_ticks); | |
776 | dst->time_in_queue = cpu_to_le32(src->time_in_queue); | |
777 | dst->msec = cpu_to_le64(src->msec); | |
778 | } | |
779 | ||
780 | void fio_server_send_du(void) | |
781 | { | |
782 | struct disk_util *du; | |
783 | struct flist_head *entry; | |
784 | struct cmd_du_pdu pdu; | |
785 | ||
786 | dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list)); | |
787 | ||
0766d92e JA |
788 | memset(&pdu, 0, sizeof(pdu)); |
789 | ||
d09a64a0 JA |
790 | flist_for_each(entry, &disk_list) { |
791 | du = flist_entry(entry, struct disk_util, list); | |
792 | ||
793 | convert_dus(&pdu.dus, &du->dus); | |
794 | convert_agg(&pdu.agg, &du->agg); | |
795 | ||
796 | fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0); | |
797 | } | |
798 | } | |
799 | ||
142575e6 JA |
800 | int fio_server_log(const char *format, ...) |
801 | { | |
802 | char buffer[1024]; | |
803 | va_list args; | |
82fa6b21 | 804 | size_t len; |
142575e6 | 805 | |
60efd14e JA |
806 | dprint(FD_NET, "server log\n"); |
807 | ||
142575e6 | 808 | va_start(args, format); |
82fa6b21 | 809 | len = vsnprintf(buffer, sizeof(buffer), format, args); |
142575e6 JA |
810 | va_end(args); |
811 | ||
82fa6b21 | 812 | return fio_server_text_output(buffer, len); |
37db14fe | 813 | } |
e46d8091 | 814 | |
87aa8f19 | 815 | static int fio_init_server_ip(void) |
81179eec | 816 | { |
87aa8f19 | 817 | int sk, opt; |
81179eec JA |
818 | |
819 | sk = socket(AF_INET, SOCK_STREAM, 0); | |
820 | if (sk < 0) { | |
821 | log_err("fio: socket: %s\n", strerror(errno)); | |
822 | return -1; | |
823 | } | |
824 | ||
825 | opt = 1; | |
826 | if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
827 | log_err("fio: setsockopt: %s\n", strerror(errno)); | |
b94cba47 | 828 | close(sk); |
81179eec JA |
829 | return -1; |
830 | } | |
831 | #ifdef SO_REUSEPORT | |
6eb24791 | 832 | if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { |
81179eec | 833 | log_err("fio: setsockopt: %s\n", strerror(errno)); |
b94cba47 | 834 | close(sk); |
81179eec JA |
835 | return -1; |
836 | } | |
837 | #endif | |
838 | ||
839 | saddr_in.sin_family = AF_INET; | |
81179eec JA |
840 | |
841 | if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) { | |
842 | log_err("fio: bind: %s\n", strerror(errno)); | |
b94cba47 | 843 | close(sk); |
81179eec JA |
844 | return -1; |
845 | } | |
846 | ||
87aa8f19 JA |
847 | return sk; |
848 | } | |
849 | ||
850 | static int fio_init_server_sock(void) | |
851 | { | |
852 | struct sockaddr_un addr; | |
853 | fio_socklen_t len; | |
854 | mode_t mode; | |
855 | int sk; | |
856 | ||
857 | sk = socket(AF_UNIX, SOCK_STREAM, 0); | |
858 | if (sk < 0) { | |
859 | log_err("fio: socket: %s\n", strerror(errno)); | |
860 | return -1; | |
861 | } | |
862 | ||
863 | mode = umask(000); | |
864 | ||
865 | memset(&addr, 0, sizeof(addr)); | |
866 | addr.sun_family = AF_UNIX; | |
867 | strcpy(addr.sun_path, bind_sock); | |
868 | unlink(bind_sock); | |
869 | ||
870 | len = sizeof(addr.sun_family) + strlen(bind_sock) + 1; | |
871 | ||
872 | if (bind(sk, (struct sockaddr *) &addr, len) < 0) { | |
873 | log_err("fio: bind: %s\n", strerror(errno)); | |
b94cba47 | 874 | close(sk); |
87aa8f19 JA |
875 | return -1; |
876 | } | |
877 | ||
878 | umask(mode); | |
879 | return sk; | |
880 | } | |
881 | ||
882 | static int fio_init_server_connection(void) | |
883 | { | |
bebe6398 | 884 | char bind_str[128]; |
87aa8f19 JA |
885 | int sk; |
886 | ||
887 | dprint(FD_NET, "starting server\n"); | |
888 | ||
889 | if (!bind_sock) | |
890 | sk = fio_init_server_ip(); | |
891 | else | |
892 | sk = fio_init_server_sock(); | |
893 | ||
894 | if (sk < 0) | |
895 | return sk; | |
896 | ||
bebe6398 JA |
897 | if (!bind_sock) |
898 | sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port); | |
899 | else | |
900 | strcpy(bind_str, bind_sock); | |
901 | ||
902 | log_info("fio: server listening on %s\n", bind_str); | |
903 | ||
89c1707c | 904 | if (listen(sk, 0) < 0) { |
81179eec JA |
905 | log_err("fio: listen: %s\n", strerror(errno)); |
906 | return -1; | |
907 | } | |
908 | ||
87aa8f19 JA |
909 | return sk; |
910 | } | |
911 | ||
bebe6398 JA |
912 | int fio_server_parse_string(const char *str, char **ptr, int *is_sock, |
913 | int *port, struct in_addr *inp) | |
914 | { | |
915 | *ptr = NULL; | |
916 | *is_sock = 0; | |
6d2cf394 | 917 | *port = fio_net_port; |
bebe6398 JA |
918 | |
919 | if (!strncmp(str, "sock:", 5)) { | |
920 | *ptr = strdup(str + 5); | |
921 | *is_sock = 1; | |
922 | } else { | |
923 | const char *host = str; | |
924 | char *portp; | |
925 | int lport = 0; | |
926 | ||
927 | /* | |
928 | * Is it ip:<ip or host>:port | |
929 | */ | |
930 | if (!strncmp(host, "ip:", 3)) | |
931 | host += 3; | |
932 | else if (host[0] == ':') { | |
933 | /* String is :port */ | |
934 | host++; | |
935 | lport = atoi(host); | |
936 | if (!lport || lport > 65535) { | |
937 | log_err("fio: bad server port %u\n", port); | |
938 | return 1; | |
939 | } | |
940 | /* no hostname given, we are done */ | |
941 | *port = lport; | |
942 | return 0; | |
943 | } | |
944 | ||
945 | /* | |
946 | * If no port seen yet, check if there's a last ':' at the end | |
947 | */ | |
948 | if (!lport) { | |
949 | portp = strchr(host, ':'); | |
950 | if (portp) { | |
951 | *portp = '\0'; | |
952 | portp++; | |
953 | lport = atoi(portp); | |
954 | if (!lport || lport > 65535) { | |
955 | log_err("fio: bad server port %u\n", port); | |
956 | return 1; | |
957 | } | |
958 | } | |
959 | } | |
960 | ||
961 | if (lport) | |
962 | *port = lport; | |
963 | ||
964 | *ptr = strdup(host); | |
965 | ||
966 | if (inet_aton(host, inp) != 1) { | |
967 | struct hostent *hent; | |
968 | ||
969 | hent = gethostbyname(host); | |
970 | if (!hent) { | |
bebe6398 JA |
971 | free(*ptr); |
972 | *ptr = NULL; | |
973 | return 1; | |
974 | } | |
975 | ||
976 | memcpy(inp, hent->h_addr, 4); | |
977 | } | |
978 | } | |
979 | ||
980 | if (*port == 0) | |
981 | *port = fio_net_port; | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
87aa8f19 JA |
986 | /* |
987 | * Server arg should be one of: | |
988 | * | |
989 | * sock:/path/to/socket | |
990 | * ip:1.2.3.4 | |
991 | * 1.2.3.4 | |
992 | * | |
993 | * Where sock uses unix domain sockets, and ip binds the server to | |
994 | * a specific interface. If no arguments are given to the server, it | |
995 | * uses IP and binds to 0.0.0.0. | |
996 | * | |
997 | */ | |
998 | static int fio_handle_server_arg(void) | |
999 | { | |
6d2cf394 | 1000 | int port = fio_net_port; |
a7de0a11 | 1001 | int is_sock, ret = 0; |
bebe6398 | 1002 | |
87aa8f19 JA |
1003 | saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
1004 | ||
1005 | if (!fio_server_arg) | |
a7de0a11 | 1006 | goto out; |
87aa8f19 | 1007 | |
4e5b8fb8 | 1008 | ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock, |
6d2cf394 | 1009 | &port, &saddr_in.sin_addr); |
4e5b8fb8 JA |
1010 | |
1011 | if (!is_sock && bind_sock) { | |
1012 | free(bind_sock); | |
1013 | bind_sock = NULL; | |
1014 | } | |
1015 | ||
a7de0a11 | 1016 | out: |
6d2cf394 JA |
1017 | fio_net_port = port; |
1018 | saddr_in.sin_port = htons(port); | |
4e5b8fb8 | 1019 | return ret; |
87aa8f19 JA |
1020 | } |
1021 | ||
1022 | static int fio_server(void) | |
1023 | { | |
1024 | int sk, ret; | |
1025 | ||
1026 | dprint(FD_NET, "starting server\n"); | |
1027 | ||
1028 | if (fio_handle_server_arg()) | |
1029 | return -1; | |
1030 | ||
1031 | sk = fio_init_server_connection(); | |
1032 | if (sk < 0) | |
1033 | return -1; | |
81179eec JA |
1034 | |
1035 | ret = accept_loop(sk); | |
87aa8f19 | 1036 | |
81179eec | 1037 | close(sk); |
87aa8f19 JA |
1038 | |
1039 | if (fio_server_arg) { | |
1040 | free(fio_server_arg); | |
1041 | fio_server_arg = NULL; | |
1042 | } | |
bebe6398 JA |
1043 | if (bind_sock) |
1044 | free(bind_sock); | |
87aa8f19 | 1045 | |
81179eec JA |
1046 | return ret; |
1047 | } | |
1048 | ||
7b821684 | 1049 | void fio_server_got_signal(int signal) |
9abea48b | 1050 | { |
7b821684 JA |
1051 | if (signal == SIGPIPE) |
1052 | server_fd = -1; | |
1053 | else { | |
1054 | log_info("\nfio: terminating on signal %d\n", signal); | |
1055 | exit_backend = 1; | |
1056 | } | |
9abea48b JA |
1057 | } |
1058 | ||
13755d94 JA |
1059 | static int check_existing_pidfile(const char *pidfile) |
1060 | { | |
1061 | struct stat sb; | |
1062 | char buf[16]; | |
1063 | pid_t pid; | |
1064 | FILE *f; | |
1065 | ||
1066 | if (stat(pidfile, &sb)) | |
1067 | return 0; | |
1068 | ||
1069 | f = fopen(pidfile, "r"); | |
1070 | if (!f) | |
1071 | return 0; | |
1072 | ||
bfc3b179 | 1073 | if (fread(buf, sb.st_size, 1, f) <= 0) { |
13755d94 JA |
1074 | fclose(f); |
1075 | return 1; | |
1076 | } | |
1077 | fclose(f); | |
1078 | ||
1079 | pid = atoi(buf); | |
1080 | if (kill(pid, SIGCONT) < 0) | |
ea5aa1be | 1081 | return errno != ESRCH; |
13755d94 JA |
1082 | |
1083 | return 1; | |
1084 | } | |
1085 | ||
1086 | static int write_pid(pid_t pid, const char *pidfile) | |
402668f3 JA |
1087 | { |
1088 | FILE *fpid; | |
1089 | ||
1090 | fpid = fopen(pidfile, "w"); | |
1091 | if (!fpid) { | |
1092 | log_err("fio: failed opening pid file %s\n", pidfile); | |
13755d94 | 1093 | return 1; |
402668f3 JA |
1094 | } |
1095 | ||
1096 | fprintf(fpid, "%u\n", (unsigned int) pid); | |
13755d94 JA |
1097 | fclose(fpid); |
1098 | return 0; | |
402668f3 JA |
1099 | } |
1100 | ||
1101 | /* | |
1102 | * If pidfile is specified, background us. | |
1103 | */ | |
1104 | int fio_start_server(char *pidfile) | |
e46d8091 JA |
1105 | { |
1106 | pid_t pid; | |
402668f3 | 1107 | int ret; |
e46d8091 | 1108 | |
402668f3 | 1109 | if (!pidfile) |
e46d8091 JA |
1110 | return fio_server(); |
1111 | ||
13755d94 JA |
1112 | if (check_existing_pidfile(pidfile)) { |
1113 | log_err("fio: pidfile %s exists and server appears alive\n", | |
1114 | pidfile); | |
1115 | return -1; | |
1116 | } | |
1117 | ||
e46d8091 JA |
1118 | pid = fork(); |
1119 | if (pid < 0) { | |
13755d94 | 1120 | log_err("fio: failed server fork: %s", strerror(errno)); |
402668f3 | 1121 | free(pidfile); |
c28e8e8c | 1122 | return -1; |
402668f3 | 1123 | } else if (pid) { |
13755d94 JA |
1124 | int ret = write_pid(pid, pidfile); |
1125 | ||
1126 | exit(ret); | |
402668f3 | 1127 | } |
e46d8091 JA |
1128 | |
1129 | setsid(); | |
13755d94 JA |
1130 | openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); |
1131 | log_syslog = 1; | |
e46d8091 JA |
1132 | close(STDIN_FILENO); |
1133 | close(STDOUT_FILENO); | |
1134 | close(STDERR_FILENO); | |
1135 | f_out = NULL; | |
1136 | f_err = NULL; | |
402668f3 JA |
1137 | |
1138 | ret = fio_server(); | |
1139 | ||
1140 | closelog(); | |
1141 | unlink(pidfile); | |
1142 | free(pidfile); | |
1143 | return ret; | |
e46d8091 | 1144 | } |
87aa8f19 | 1145 | |
bebe6398 | 1146 | void fio_server_set_arg(const char *arg) |
87aa8f19 JA |
1147 | { |
1148 | fio_server_arg = strdup(arg); | |
1149 | } |