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> | |
50d16976 | 11 | #include <sys/mman.h> |
50d16976 JA |
12 | #include <netinet/in.h> |
13 | #include <arpa/inet.h> | |
14 | #include <netdb.h> | |
e46d8091 | 15 | #include <syslog.h> |
50d16976 JA |
16 | |
17 | #include "fio.h" | |
132159a5 | 18 | #include "server.h" |
fcee5ff6 | 19 | #include "crc/crc16.h" |
50d16976 | 20 | |
132159a5 | 21 | int fio_net_port = 8765; |
50d16976 | 22 | |
009b1be4 JA |
23 | int exit_backend = 0; |
24 | ||
46c48f1f | 25 | static int server_fd = -1; |
37db14fe | 26 | |
132159a5 JA |
27 | int fio_send_data(int sk, const void *p, unsigned int len) |
28 | { | |
794d69ca JA |
29 | assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU); |
30 | ||
132159a5 JA |
31 | do { |
32 | int ret = send(sk, p, len, 0); | |
33 | ||
34 | if (ret > 0) { | |
35 | len -= ret; | |
36 | if (!len) | |
37 | break; | |
38 | p += ret; | |
39 | continue; | |
40 | } else if (!ret) | |
41 | break; | |
42 | else if (errno == EAGAIN || errno == EINTR) | |
43 | continue; | |
44 | } while (!exit_backend); | |
45 | ||
46 | if (!len) | |
47 | return 0; | |
48 | ||
49 | return 1; | |
50 | } | |
51 | ||
52 | int fio_recv_data(int sk, void *p, unsigned int len) | |
53 | { | |
54 | do { | |
55 | int ret = recv(sk, p, len, MSG_WAITALL); | |
56 | ||
57 | if (ret > 0) { | |
58 | len -= ret; | |
59 | if (!len) | |
60 | break; | |
61 | p += ret; | |
62 | continue; | |
63 | } else if (!ret) | |
64 | break; | |
65 | else if (errno == EAGAIN || errno == EINTR) | |
66 | continue; | |
67 | } while (!exit_backend); | |
68 | ||
69 | if (!len) | |
70 | return 0; | |
71 | ||
72 | return -1; | |
73 | } | |
74 | ||
75 | static int verify_convert_cmd(struct fio_net_cmd *cmd) | |
76 | { | |
fcee5ff6 | 77 | uint16_t crc; |
132159a5 | 78 | |
fcee5ff6 JA |
79 | cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); |
80 | cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); | |
132159a5 | 81 | |
fcee5ff6 JA |
82 | crc = crc16(cmd, FIO_NET_CMD_CRC_SZ); |
83 | if (crc != cmd->cmd_crc16) { | |
132159a5 | 84 | log_err("fio: server bad crc on command (got %x, wanted %x)\n", |
fcee5ff6 | 85 | cmd->cmd_crc16, crc); |
132159a5 JA |
86 | return 1; |
87 | } | |
88 | ||
89 | cmd->version = le16_to_cpu(cmd->version); | |
90 | cmd->opcode = le16_to_cpu(cmd->opcode); | |
91 | cmd->flags = le32_to_cpu(cmd->flags); | |
92 | cmd->serial = le64_to_cpu(cmd->serial); | |
93 | cmd->pdu_len = le32_to_cpu(cmd->pdu_len); | |
94 | ||
95 | switch (cmd->version) { | |
96 | case FIO_SERVER_VER1: | |
97 | break; | |
98 | default: | |
99 | log_err("fio: bad server cmd version %d\n", cmd->version); | |
100 | return 1; | |
101 | } | |
102 | ||
103 | if (cmd->pdu_len > FIO_SERVER_MAX_PDU) { | |
104 | log_err("fio: command payload too large: %u\n", cmd->pdu_len); | |
105 | return 1; | |
106 | } | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
a64e88da JA |
111 | /* |
112 | * Read (and defragment, if necessary) incoming commands | |
113 | */ | |
114 | struct fio_net_cmd *fio_net_recv_cmd(int sk) | |
132159a5 | 115 | { |
a64e88da JA |
116 | struct fio_net_cmd cmd, *cmdret = NULL; |
117 | size_t cmd_size = 0, pdu_offset = 0; | |
fcee5ff6 | 118 | uint16_t crc; |
a64e88da JA |
119 | int ret, first = 1; |
120 | void *pdu = NULL; | |
132159a5 | 121 | |
a64e88da JA |
122 | do { |
123 | ret = fio_recv_data(sk, &cmd, sizeof(cmd)); | |
124 | if (ret) | |
125 | break; | |
132159a5 | 126 | |
a64e88da JA |
127 | /* We have a command, verify it and swap if need be */ |
128 | ret = verify_convert_cmd(&cmd); | |
129 | if (ret) | |
130 | break; | |
132159a5 | 131 | |
a64e88da JA |
132 | if (first) |
133 | cmd_size = sizeof(cmd) + cmd.pdu_len; | |
134 | else | |
135 | cmd_size += cmd.pdu_len; | |
132159a5 | 136 | |
a64e88da JA |
137 | cmdret = realloc(cmdret, cmd_size); |
138 | pdu = (void *) cmdret->payload; | |
132159a5 | 139 | |
a64e88da JA |
140 | if (first) |
141 | memcpy(cmdret, &cmd, sizeof(cmd)); | |
142 | else | |
143 | assert(cmdret->opcode == cmd.opcode); | |
144 | ||
145 | if (!cmd.pdu_len) | |
146 | break; | |
147 | ||
148 | /* There's payload, get it */ | |
149 | pdu = (void *) cmdret->payload + pdu_offset; | |
150 | ret = fio_recv_data(sk, pdu, cmd.pdu_len); | |
151 | if (ret) | |
152 | break; | |
153 | ||
154 | /* Verify payload crc */ | |
155 | crc = crc16(pdu, cmd.pdu_len); | |
156 | if (crc != cmd.pdu_crc16) { | |
157 | log_err("fio: server bad crc on payload "); | |
158 | log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); | |
159 | ret = 1; | |
160 | break; | |
161 | } | |
162 | ||
163 | pdu_offset += cmd.pdu_len; | |
164 | cmdret->pdu_len += cmd.pdu_len; | |
165 | first = 0; | |
166 | } while (cmd.flags & FIO_NET_CMD_F_MORE); | |
132159a5 | 167 | |
a64e88da JA |
168 | if (ret) { |
169 | free(cmdret); | |
170 | cmdret = NULL; | |
132159a5 JA |
171 | } |
172 | ||
a64e88da JA |
173 | if (cmdret) |
174 | cmdret->flags &= ~FIO_NET_CMD_F_MORE; | |
175 | ||
176 | return cmdret; | |
132159a5 JA |
177 | } |
178 | ||
179 | void fio_net_cmd_crc(struct fio_net_cmd *cmd) | |
180 | { | |
181 | uint32_t pdu_len; | |
182 | ||
ddcc0b69 | 183 | cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ)); |
132159a5 JA |
184 | |
185 | pdu_len = le32_to_cpu(cmd->pdu_len); | |
186 | if (pdu_len) | |
ddcc0b69 | 187 | cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len)); |
132159a5 JA |
188 | } |
189 | ||
a64e88da | 190 | int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size) |
794d69ca JA |
191 | { |
192 | struct fio_net_cmd *cmd; | |
193 | size_t this_len; | |
194 | int ret; | |
195 | ||
196 | do { | |
197 | this_len = size; | |
198 | if (this_len > FIO_SERVER_MAX_PDU) | |
199 | this_len = FIO_SERVER_MAX_PDU; | |
200 | ||
201 | cmd = malloc(sizeof(*cmd) + this_len); | |
202 | ||
203 | fio_init_net_cmd(cmd, opcode, buf, this_len); | |
204 | ||
205 | if (this_len < size) | |
ddcc0b69 | 206 | cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); |
794d69ca JA |
207 | |
208 | fio_net_cmd_crc(cmd); | |
209 | ||
210 | ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); | |
211 | free(cmd); | |
212 | size -= this_len; | |
213 | buf += this_len; | |
214 | } while (!ret && size); | |
215 | ||
216 | return ret; | |
217 | } | |
218 | ||
132159a5 JA |
219 | static int send_simple_command(int sk, uint16_t opcode, uint64_t serial) |
220 | { | |
221 | struct fio_net_cmd cmd = { | |
ddcc0b69 | 222 | .version = __cpu_to_le16(FIO_SERVER_VER1), |
132159a5 | 223 | .opcode = cpu_to_le16(opcode), |
bdab4441 | 224 | .serial = cpu_to_le64(serial), |
132159a5 JA |
225 | }; |
226 | ||
227 | fio_net_cmd_crc(&cmd); | |
228 | ||
229 | return fio_send_data(sk, &cmd, sizeof(cmd)); | |
230 | } | |
231 | ||
232 | /* | |
233 | * Send an ack for this command | |
234 | */ | |
235 | static int ack_command(int sk, struct fio_net_cmd *cmd) | |
236 | { | |
fcee5ff6 | 237 | #if 0 |
132159a5 | 238 | return send_simple_command(sk, FIO_NET_CMD_ACK, cmd->serial); |
fcee5ff6 JA |
239 | #else |
240 | return 0; | |
241 | #endif | |
132159a5 JA |
242 | } |
243 | ||
244 | #if 0 | |
245 | static int nak_command(int sk, struct fio_net_cmd *cmd) | |
246 | { | |
247 | return send_simple_command(sk, FIO_NET_CMD_NAK, cmd->serial); | |
248 | } | |
249 | #endif | |
250 | ||
437377e1 JA |
251 | static int send_quit_command(void) |
252 | { | |
46c48f1f | 253 | dprint(FD_NET, "server: sending quit\n"); |
437377e1 JA |
254 | return send_simple_command(server_fd, FIO_NET_CMD_QUIT, 0); |
255 | } | |
256 | ||
794d69ca | 257 | static int handle_cur_job(struct fio_net_cmd *cmd) |
132159a5 | 258 | { |
a64e88da JA |
259 | void *buf = cmd->payload; |
260 | int ret; | |
132159a5 | 261 | |
a64e88da | 262 | parse_jobs_ini(buf, 1, 0); |
794d69ca JA |
263 | ret = exec_run(); |
264 | send_quit_command(); | |
265 | reset_fio_state(); | |
132159a5 JA |
266 | return ret; |
267 | } | |
268 | ||
269 | static int handle_command(struct fio_net_cmd *cmd) | |
270 | { | |
271 | int ret; | |
272 | ||
46c48f1f JA |
273 | dprint(FD_NET, "server: got opcode %d\n", cmd->opcode); |
274 | ||
132159a5 JA |
275 | switch (cmd->opcode) { |
276 | case FIO_NET_CMD_QUIT: | |
d7959186 JA |
277 | return 1; |
278 | case FIO_NET_CMD_EXIT: | |
132159a5 JA |
279 | exit_backend = 1; |
280 | return 1; | |
281 | case FIO_NET_CMD_ACK: | |
282 | return 0; | |
283 | case FIO_NET_CMD_NAK: | |
284 | return 1; | |
285 | case FIO_NET_CMD_JOB: | |
794d69ca | 286 | ret = handle_cur_job(cmd); |
132159a5 JA |
287 | break; |
288 | default: | |
289 | log_err("fio: unknown opcode: %d\n", cmd->opcode); | |
290 | ret = 1; | |
291 | } | |
292 | ||
293 | return ret; | |
294 | } | |
295 | ||
296 | static int handle_connection(int sk) | |
297 | { | |
298 | struct fio_net_cmd *cmd = NULL; | |
299 | int ret = 0; | |
300 | ||
301 | /* read forever */ | |
302 | while (!exit_backend) { | |
a64e88da | 303 | cmd = fio_net_recv_cmd(sk); |
132159a5 JA |
304 | if (!cmd) { |
305 | ret = 1; | |
306 | break; | |
307 | } | |
308 | ||
309 | ret = ack_command(sk, cmd); | |
310 | if (ret) | |
311 | break; | |
312 | ||
313 | ret = handle_command(cmd); | |
314 | if (ret) | |
315 | break; | |
316 | ||
317 | free(cmd); | |
c77a99e7 | 318 | cmd = NULL; |
132159a5 JA |
319 | } |
320 | ||
321 | if (cmd) | |
322 | free(cmd); | |
323 | ||
324 | return ret; | |
325 | } | |
326 | ||
50d16976 JA |
327 | static int accept_loop(int listen_sk) |
328 | { | |
329 | struct sockaddr addr; | |
330 | unsigned int len = sizeof(addr); | |
009b1be4 | 331 | struct pollfd pfd; |
132159a5 | 332 | int ret, sk, flags, exitval = 0; |
50d16976 | 333 | |
009b1be4 JA |
334 | flags = fcntl(listen_sk, F_GETFL); |
335 | flags |= O_NONBLOCK; | |
336 | fcntl(listen_sk, F_SETFL, flags); | |
50d16976 | 337 | again: |
009b1be4 JA |
338 | pfd.fd = listen_sk; |
339 | pfd.events = POLLIN; | |
340 | do { | |
341 | ret = poll(&pfd, 1, 100); | |
342 | if (ret < 0) { | |
343 | if (errno == EINTR) | |
344 | break; | |
fcee5ff6 | 345 | log_err("fio: poll: %s\n", strerror(errno)); |
009b1be4 JA |
346 | goto out; |
347 | } else if (!ret) | |
348 | continue; | |
349 | ||
350 | if (pfd.revents & POLLIN) | |
351 | break; | |
352 | } while (!exit_backend); | |
353 | ||
354 | if (exit_backend) | |
355 | goto out; | |
356 | ||
50d16976 | 357 | sk = accept(listen_sk, &addr, &len); |
50d16976 | 358 | if (sk < 0) { |
690e09ae | 359 | log_err("fio: accept: %s\n", strerror(errno)); |
50d16976 JA |
360 | return -1; |
361 | } | |
362 | ||
46c48f1f JA |
363 | dprint(FD_NET, "server got a connection\n"); |
364 | ||
37db14fe JA |
365 | server_fd = sk; |
366 | ||
132159a5 | 367 | exitval = handle_connection(sk); |
50d16976 | 368 | |
37db14fe | 369 | server_fd = -1; |
50d16976 | 370 | close(sk); |
5c341e9a | 371 | |
009b1be4 | 372 | if (!exit_backend) |
5c341e9a JA |
373 | goto again; |
374 | ||
009b1be4 | 375 | out: |
132159a5 | 376 | return exitval; |
50d16976 JA |
377 | } |
378 | ||
e46d8091 | 379 | static int fio_server(void) |
50d16976 JA |
380 | { |
381 | struct sockaddr_in saddr_in; | |
382 | struct sockaddr addr; | |
383 | unsigned int len; | |
afcf7758 | 384 | int sk, opt, ret; |
50d16976 | 385 | |
46c48f1f JA |
386 | dprint(FD_NET, "starting server\n"); |
387 | ||
50d16976 JA |
388 | sk = socket(AF_INET, SOCK_STREAM, 0); |
389 | if (sk < 0) { | |
690e09ae | 390 | log_err("fio: socket: %s\n", strerror(errno)); |
50d16976 JA |
391 | return -1; |
392 | } | |
393 | ||
394 | opt = 1; | |
395 | if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
690e09ae | 396 | log_err("fio: setsockopt: %s\n", strerror(errno)); |
50d16976 JA |
397 | return -1; |
398 | } | |
399 | #ifdef SO_REUSEPORT | |
400 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
690e09ae | 401 | log_err("fio: setsockopt: %s\n", strerror(errno)); |
50d16976 JA |
402 | return 1; |
403 | } | |
404 | #endif | |
405 | ||
406 | saddr_in.sin_family = AF_INET; | |
407 | saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); | |
132159a5 | 408 | saddr_in.sin_port = htons(fio_net_port); |
50d16976 JA |
409 | |
410 | if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) { | |
690e09ae | 411 | log_err("fio: bind: %s\n", strerror(errno)); |
50d16976 JA |
412 | return -1; |
413 | } | |
414 | ||
415 | if (listen(sk, 1) < 0) { | |
690e09ae | 416 | log_err("fio: listen: %s\n", strerror(errno)); |
50d16976 JA |
417 | return -1; |
418 | } | |
419 | ||
420 | len = sizeof(addr); | |
421 | if (getsockname(sk, &addr, &len) < 0) { | |
690e09ae | 422 | log_err("fio: getsockname: %s\n", strerror(errno)); |
50d16976 JA |
423 | return -1; |
424 | } | |
425 | ||
afcf7758 JA |
426 | ret = accept_loop(sk); |
427 | close(sk); | |
428 | return ret; | |
50d16976 | 429 | } |
37db14fe | 430 | |
142575e6 | 431 | int fio_server_text_output(const char *buf, unsigned int len) |
37db14fe | 432 | { |
337d75a8 JA |
433 | if (server_fd != -1) |
434 | return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len); | |
435 | ||
436 | return 0; | |
142575e6 JA |
437 | } |
438 | ||
a64e88da JA |
439 | static void convert_io_stat(struct io_stat *dst, struct io_stat *src) |
440 | { | |
441 | dst->max_val = cpu_to_le64(src->max_val); | |
442 | dst->min_val = cpu_to_le64(src->min_val); | |
443 | dst->samples = cpu_to_le64(src->samples); | |
444 | /* FIXME */ | |
ddcc0b69 JA |
445 | dst->mean = __cpu_to_le64(src->mean); |
446 | dst->S = __cpu_to_le64(src->S); | |
a64e88da JA |
447 | } |
448 | ||
449 | static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) | |
450 | { | |
451 | int i; | |
452 | ||
453 | for (i = 0; i < 2; i++) { | |
454 | dst->max_run[i] = cpu_to_le64(src->max_run[i]); | |
455 | dst->min_run[i] = cpu_to_le64(src->min_run[i]); | |
456 | dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); | |
457 | dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); | |
458 | dst->io_kb[i] = cpu_to_le64(src->io_kb[i]); | |
459 | dst->agg[i] = cpu_to_le64(src->agg[i]); | |
460 | } | |
461 | ||
462 | dst->kb_base = cpu_to_le32(src->kb_base); | |
463 | dst->groupid = cpu_to_le32(src->groupid); | |
464 | } | |
465 | ||
466 | /* | |
467 | * Send a CMD_TS, which packs struct thread_stat and group_run_stats | |
468 | * into a single payload. | |
469 | */ | |
470 | void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) | |
471 | { | |
472 | struct cmd_ts_pdu p; | |
473 | int i, j; | |
474 | ||
475 | strcpy(p.ts.name, ts->name); | |
476 | strcpy(p.ts.verror, ts->verror); | |
477 | strcpy(p.ts.description, ts->description); | |
478 | ||
ddcc0b69 | 479 | p.ts.error = cpu_to_le32(ts->error); |
a64e88da | 480 | p.ts.groupid = cpu_to_le32(ts->groupid); |
ddcc0b69 | 481 | p.ts.pid = cpu_to_le32(ts->pid); |
a64e88da JA |
482 | p.ts.members = cpu_to_le32(ts->members); |
483 | ||
484 | for (i = 0; i < 2; i++) { | |
485 | convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); | |
486 | convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); | |
487 | convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); | |
488 | convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); | |
489 | } | |
490 | ||
491 | p.ts.usr_time = cpu_to_le64(ts->usr_time); | |
492 | p.ts.sys_time = cpu_to_le64(ts->sys_time); | |
493 | p.ts.ctx = cpu_to_le64(ts->ctx); | |
494 | p.ts.minf = cpu_to_le64(ts->minf); | |
495 | p.ts.majf = cpu_to_le64(ts->majf); | |
496 | p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); | |
497 | p.ts.percentile_list = NULL; | |
498 | ||
499 | for (i = 0; i < FIO_IO_U_MAP_NR; i++) { | |
500 | p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); | |
501 | p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); | |
502 | p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); | |
503 | } | |
504 | ||
505 | for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { | |
506 | p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); | |
507 | p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); | |
508 | } | |
509 | ||
510 | for (i = 0; i < 2; i++) | |
511 | for (j = 0; j < FIO_IO_U_PLAT_NR; j++) | |
512 | p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); | |
513 | ||
514 | for (i = 0; i < 3; i++) { | |
515 | p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); | |
516 | p.ts.short_io_u[i] = cpu_to_le64(ts->total_io_u[i]); | |
517 | } | |
518 | ||
519 | p.ts.total_submit = cpu_to_le64(ts->total_submit); | |
520 | p.ts.total_complete = cpu_to_le64(ts->total_complete); | |
521 | ||
522 | for (i = 0; i < 2; i++) { | |
523 | p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); | |
524 | p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); | |
525 | } | |
526 | ||
527 | p.ts.total_run_time = cpu_to_le64(ts->total_run_time); | |
528 | p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); | |
529 | p.ts.total_err_count = cpu_to_le64(ts->total_err_count); | |
ddcc0b69 JA |
530 | p.ts.first_error = cpu_to_le32(ts->first_error); |
531 | p.ts.kb_base = cpu_to_le32(ts->kb_base); | |
a64e88da JA |
532 | |
533 | convert_gs(&p.rs, rs); | |
534 | ||
535 | fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p)); | |
536 | } | |
537 | ||
538 | void fio_server_send_gs(struct group_run_stats *rs) | |
539 | { | |
540 | struct group_run_stats gs; | |
541 | ||
542 | convert_gs(&gs, rs); | |
543 | fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs)); | |
544 | } | |
545 | ||
142575e6 JA |
546 | int fio_server_log(const char *format, ...) |
547 | { | |
548 | char buffer[1024]; | |
549 | va_list args; | |
82fa6b21 | 550 | size_t len; |
142575e6 JA |
551 | |
552 | va_start(args, format); | |
82fa6b21 | 553 | len = vsnprintf(buffer, sizeof(buffer), format, args); |
142575e6 JA |
554 | va_end(args); |
555 | ||
82fa6b21 | 556 | return fio_server_text_output(buffer, len); |
37db14fe | 557 | } |
e46d8091 JA |
558 | |
559 | int fio_start_server(int daemonize) | |
560 | { | |
561 | pid_t pid; | |
562 | ||
563 | if (!daemonize) | |
564 | return fio_server(); | |
565 | ||
566 | openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); | |
567 | pid = fork(); | |
568 | if (pid < 0) { | |
569 | syslog(LOG_ERR, "failed server fork"); | |
570 | return 1; | |
571 | } else if (pid) | |
572 | exit(0); | |
573 | ||
574 | setsid(); | |
575 | close(STDIN_FILENO); | |
576 | close(STDOUT_FILENO); | |
577 | close(STDERR_FILENO); | |
578 | f_out = NULL; | |
579 | f_err = NULL; | |
580 | log_syslog = 1; | |
581 | return fio_server(); | |
582 | } |