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use readdir() instead of the deprecated readir_r()
[libserialport.git] / serialport.c
CommitLineData
74510d4b
ML		 1/*
2 * This file is part of the libserialport project.
3 *
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
f77bb46d
ML		 5 * Copyright (C) 2010-2015 Uwe Hermann <uwe@hermann-uwe.de>
6 * Copyright (C) 2013-2015 Martin Ling <martin-libserialport@earth.li>
31b3a8f5 7 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
a93fb468 8 * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org>
74510d4b
ML		 9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as
12 * published by the Free Software Foundation, either version 3 of the
13 * License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
1a584c45 24#include <config.h>
f6a1fb65 25#include "libserialport.h"
e33dcf90 26#include "libserialport_internal.h"
da2748bf 27
6c6aebe7 28static const struct std_baudrate std_baudrates[] = {
da2748bf
ML		 29#ifdef _WIN32
30 /*
31 * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
32 * have documented CBR_* macros.
33 */
34 BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
35 BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
eac329d2 36 BAUD(115200), BAUD(128000), BAUD(256000),
da2748bf 37#else
eac329d2
UH		 38 BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
39 BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
40 BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
41 BAUD(230400),
da2748bf 42#if !defined(__APPLE__) && !defined(__OpenBSD__)
eac329d2 43 BAUD(460800),
da2748bf
ML		 44#endif
45#endif
46};
47
6c6aebe7
UH		 48#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
49
863b35e6
ML		 50void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
51
eb6ed20f
ML		 52static enum sp_return get_config(struct sp_port *port, struct port_data *data,
53 struct sp_port_config *config);
e33dcf90 54
eb6ed20f
ML		 55static enum sp_return set_config(struct sp_port *port, struct port_data *data,
56 const struct sp_port_config *config);
80186526 57
970f279a 58SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 59{
60 struct sp_port *port;
5a8810e2 61#ifndef NO_PORT_METADATA
a93fb468 62 enum sp_return ret;
5a8810e2 63#endif
5919c913 64 int len;
d54e9004 65
c33efc48
ML		 66 TRACE("%s, %p", portname, port_ptr);
67
32b5ac05 68 if (!port_ptr)
c33efc48 69 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 70
77f262c4
ML		 71 *port_ptr = NULL;
72
d4babed2 73 if (!portname)
c33efc48 74 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 75
7890cef6 76 DEBUG_FMT("Building structure for port %s", portname);
ea667be7 77
d54e9004 78 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 79 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 80
5919c913
ML		 81 len = strlen(portname) + 1;
82
eac329d2 83 if (!(port->name = malloc(len))) {
d54e9004 84 free(port);
c33efc48 85 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 86 }
87
88 memcpy(port->name, portname, len);
89
8f471c66 90#ifdef _WIN32
e31f2c6b 91 port->usb_path = NULL;
8f471c66
ML		 92 port->hdl = INVALID_HANDLE_VALUE;
93#else
94 port->fd = -1;
95#endif
96
e33dcf90
ML		 97 port->description = NULL;
98 port->transport = SP_TRANSPORT_NATIVE;
99 port->usb_bus = -1;
100 port->usb_address = -1;
101 port->usb_vid = -1;
102 port->usb_pid = -1;
103 port->usb_manufacturer = NULL;
104 port->usb_product = NULL;
105 port->usb_serial = NULL;
106 port->bluetooth_address = NULL;
107
e4ce975a 108#ifndef NO_PORT_METADATA
e33dcf90 109 if ((ret = get_port_details(port)) != SP_OK) {
a93fb468
AJ		 110 sp_free_port(port);
111 return ret;
112 }
e4ce975a 113#endif
a93fb468 114
77f262c4
ML		 115 *port_ptr = port;
116
c33efc48 117 RETURN_OK();
d54e9004
ML		 118}
119
970f279a 120SP_API char *sp_get_port_name(const struct sp_port *port)
1c5aae9d
ML		 121{
122 TRACE("%p", port);
123
124 if (!port)
125 return NULL;
126
9caa2e86 127 RETURN_STRING(port->name);
1c5aae9d
ML		 128}
129
f1480939 130SP_API char *sp_get_port_description(const struct sp_port *port)
a93fb468
AJ		 131{
132 TRACE("%p", port);
133
134 if (!port || !port->description)
135 return NULL;
136
9caa2e86 137 RETURN_STRING(port->description);
a93fb468
AJ		 138}
139
ad036cc8 140SP_API enum sp_transport sp_get_port_transport(const struct sp_port *port)
a93fb468
AJ		 141{
142 TRACE("%p", port);
143
144 if (!port)
145 RETURN_ERROR(SP_ERR_ARG, "Null port");
146
9caa2e86 147 RETURN_INT(port->transport);
a93fb468
AJ		 148}
149
970f279a
AJ		 150SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
151 int *usb_bus,int *usb_address)
a93fb468
AJ		 152{
153 TRACE("%p", port);
154
155 if (!port)
156 RETURN_ERROR(SP_ERR_ARG, "Null port");
157 if (port->transport != SP_TRANSPORT_USB)
158 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 159 if (port->usb_bus < 0 || port->usb_address < 0)
160 RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
a93fb468 161
dc422c04
UH		 162 if (usb_bus)
163 *usb_bus = port->usb_bus;
164 if (usb_address)
165 *usb_address = port->usb_address;
a93fb468
AJ		 166
167 RETURN_OK();
168}
169
970f279a
AJ		 170SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
171 int *usb_vid, int *usb_pid)
a93fb468
AJ		 172{
173 TRACE("%p", port);
174
175 if (!port)
176 RETURN_ERROR(SP_ERR_ARG, "Null port");
177 if (port->transport != SP_TRANSPORT_USB)
178 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 179 if (port->usb_vid < 0 || port->usb_pid < 0)
180 RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
a93fb468 181
dc422c04
UH		 182 if (usb_vid)
183 *usb_vid = port->usb_vid;
184 if (usb_pid)
185 *usb_pid = port->usb_pid;
a93fb468
AJ		 186
187 RETURN_OK();
188}
189
970f279a 190SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port)
a93fb468
AJ		 191{
192 TRACE("%p", port);
193
194 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
195 return NULL;
196
9caa2e86 197 RETURN_STRING(port->usb_manufacturer);
a93fb468
AJ		 198}
199
970f279a 200SP_API char *sp_get_port_usb_product(const struct sp_port *port)
a93fb468
AJ		 201{
202 TRACE("%p", port);
203
204 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
205 return NULL;
206
9caa2e86 207 RETURN_STRING(port->usb_product);
a93fb468
AJ		 208}
209
970f279a 210SP_API char *sp_get_port_usb_serial(const struct sp_port *port)
a93fb468
AJ		 211{
212 TRACE("%p", port);
213
214 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
215 return NULL;
216
9caa2e86 217 RETURN_STRING(port->usb_serial);
a93fb468
AJ		 218}
219
970f279a 220SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port)
a93fb468
AJ		 221{
222 TRACE("%p", port);
223
224 if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
225 || !port->bluetooth_address)
226 return NULL;
227
9caa2e86 228 RETURN_STRING(port->bluetooth_address);
a93fb468
AJ		 229}
230
970f279a
AJ		 231SP_API enum sp_return sp_get_port_handle(const struct sp_port *port,
232 void *result_ptr)
3c126654 233{
00d8c56d 234 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 235
236 if (!port)
237 RETURN_ERROR(SP_ERR_ARG, "Null port");
5f64c285
UH		 238 if (!result_ptr)
239 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
3c126654
ML		 240
241#ifdef _WIN32
242 HANDLE *handle_ptr = result_ptr;
243 *handle_ptr = port->hdl;
244#else
245 int *fd_ptr = result_ptr;
246 *fd_ptr = port->fd;
247#endif
248
249 RETURN_OK();
250}
251
970f279a
AJ		 252SP_API enum sp_return sp_copy_port(const struct sp_port *port,
253 struct sp_port **copy_ptr)
32b5ac05 254{
c33efc48
ML		 255 TRACE("%p, %p", port, copy_ptr);
256
32b5ac05 257 if (!copy_ptr)
c33efc48 258 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 259
260 *copy_ptr = NULL;
261
c33efc48
ML		 262 if (!port)
263 RETURN_ERROR(SP_ERR_ARG, "Null port");
264
265 if (!port->name)
266 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 267
ea667be7
ML		 268 DEBUG("Copying port structure");
269
9caa2e86 270 RETURN_INT(sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 271}
272
970f279a 273SP_API void sp_free_port(struct sp_port *port)
e3b2f7a4 274{
c33efc48
ML		 275 TRACE("%p", port);
276
00d8c56d 277 if (!port) {
c33efc48
ML		 278 DEBUG("Null port");
279 RETURN();
280 }
e3b2f7a4 281
ea667be7
ML		 282 DEBUG("Freeing port structure");
283
e3b2f7a4
ML		 284 if (port->name)
285 free(port->name);
a93fb468
AJ		 286 if (port->description)
287 free(port->description);
288 if (port->usb_manufacturer)
289 free(port->usb_manufacturer);
290 if (port->usb_product)
291 free(port->usb_product);
292 if (port->usb_serial)
293 free(port->usb_serial);
294 if (port->bluetooth_address)
295 free(port->bluetooth_address);
296#ifdef _WIN32
297 if (port->usb_path)
298 free(port->usb_path);
299#endif
e3b2f7a4
ML		 300
301 free(port);
c33efc48
ML		 302
303 RETURN();
e3b2f7a4
ML		 304}
305
970f279a
AJ		 306SP_PRIV struct sp_port **list_append(struct sp_port **list,
307 const char *portname)
3b63f34d
ML		 308{
309 void *tmp;
310 unsigned int count;
f92f1f0c 311
3b63f34d 312 for (count = 0; list[count]; count++);
d54e9004 313 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 314 goto fail;
315 list = tmp;
77f262c4 316 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 317 goto fail;
db2794ce 318 list[count + 1] = NULL;
3b63f34d 319 return list;
f92f1f0c 320
3b63f34d
ML		 321fail:
322 sp_free_port_list(list);
323 return NULL;
324}
325
970f279a 326SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 327{
23e7fa37 328#ifndef NO_ENUMERATION
d54e9004 329 struct sp_port **list;
48a4076f 330 int ret;
23e7fa37 331#endif
24c1a4bb 332
c33efc48
ML		 333 TRACE("%p", list_ptr);
334
dec10e31
ML		 335 if (!list_ptr)
336 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
337
63926415
UH		 338 *list_ptr = NULL;
339
8d12e620
ML		 340#ifdef NO_ENUMERATION
341 RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
342#else
ea667be7
ML		 343 DEBUG("Enumerating ports");
344
8d12e620 345 if (!(list = malloc(sizeof(struct sp_port *))))
c33efc48 346 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 347
348 list[0] = NULL;
3b63f34d 349
48a4076f 350 ret = list_ports(&list);
77f262c4 351
8d12e620 352 if (ret == SP_OK) {
77f262c4 353 *list_ptr = list;
8d12e620
ML		 354 } else {
355 sp_free_port_list(list);
77f262c4
ML		 356 *list_ptr = NULL;
357 }
8d12e620
ML		 358
359 RETURN_CODEVAL(ret);
360#endif
3b63f34d
ML		 361}
362
970f279a 363SP_API void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 364{
365 unsigned int i;
f92f1f0c 366
c33efc48
ML		 367 TRACE("%p", list);
368
dec10e31
ML		 369 if (!list) {
370 DEBUG("Null list");
371 RETURN();
372 }
373
ea667be7
ML		 374 DEBUG("Freeing port list");
375
3b63f34d 376 for (i = 0; list[i]; i++)
e3b2f7a4 377 sp_free_port(list[i]);
3b63f34d 378 free(list);
c33efc48
ML		 379
380 RETURN();
3b63f34d
ML		 381}
382
c33efc48 383#define CHECK_PORT() do { \
dc422c04 384 if (!port) \
c33efc48 385 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dc422c04 386 if (!port->name) \
dec10e31
ML		 387 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
388} while (0)
389#ifdef _WIN32
390#define CHECK_PORT_HANDLE() do { \
c33efc48 391 if (port->hdl == INVALID_HANDLE_VALUE) \
8062087a 392 RETURN_ERROR(SP_ERR_ARG, "Port not open"); \
dec10e31 393} while (0)
74510d4b 394#else
dec10e31 395#define CHECK_PORT_HANDLE() do { \
c33efc48 396 if (port->fd < 0) \
8062087a 397 RETURN_ERROR(SP_ERR_ARG, "Port not open"); \
dec10e31 398} while (0)
74510d4b 399#endif
dec10e31
ML		 400#define CHECK_OPEN_PORT() do { \
401 CHECK_PORT(); \
402 CHECK_PORT_HANDLE(); \
403} while (0)
74510d4b 404
47fcf8ec
ML		 405#ifdef WIN32
406/** To be called after port receive buffer is emptied. */
407static enum sp_return restart_wait(struct sp_port *port)
408{
409 DWORD wait_result;
410
411 if (port->wait_running) {
412 /* Check status of running wait operation. */
413 if (GetOverlappedResult(port->hdl, &port->wait_ovl,
414 &wait_result, FALSE)) {
415 DEBUG("Previous wait completed");
416 port->wait_running = FALSE;
417 } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
418 DEBUG("Previous wait still running");
419 RETURN_OK();
420 } else {
421 RETURN_FAIL("GetOverlappedResult() failed");
422 }
423 }
424
425 if (!port->wait_running) {
426 /* Start new wait operation. */
427 if (WaitCommEvent(port->hdl, &port->events,
428 &port->wait_ovl)) {
429 DEBUG("New wait returned, events already pending");
430 } else if (GetLastError() == ERROR_IO_PENDING) {
431 DEBUG("New wait running in background");
432 port->wait_running = TRUE;
433 } else {
434 RETURN_FAIL("WaitCommEvent() failed");
435 }
436 }
437
438 RETURN_OK();
439}
440#endif
441
970f279a 442SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 443{
bccc7c9f
ML		 444 struct port_data data;
445 struct sp_port_config config;
446 enum sp_return ret;
447
00d8c56d 448 TRACE("%p, 0x%x", port, flags);
c33efc48 449
dec10e31
ML		 450 CHECK_PORT();
451
276ef1b9 452 if (flags > SP_MODE_READ_WRITE)
dec10e31 453 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 454
7890cef6 455 DEBUG_FMT("Opening port %s", port->name);
ea667be7 456
74510d4b 457#ifdef _WIN32
537942c9 458 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 459 char *escaped_port_name;
537942c9 460 COMSTAT status;
99945a1f
ML		 461
462 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 463 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 464 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 465 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
466
74510d4b 467 /* Map 'flags' to the OS-specific settings. */
e3dcf906 468 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 469 if (flags & SP_MODE_READ)
470 desired_access |= GENERIC_READ;
471 if (flags & SP_MODE_WRITE)
74510d4b 472 desired_access |= GENERIC_WRITE;
74510d4b 473
99945a1f 474 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 475 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 476
477 free(escaped_port_name);
478
74510d4b 479 if (port->hdl == INVALID_HANDLE_VALUE)
dc422c04 480 RETURN_FAIL("Port CreateFile() failed");
e3dcf906
ML		 481
482 /* All timeouts initially disabled. */
483 port->timeouts.ReadIntervalTimeout = 0;
484 port->timeouts.ReadTotalTimeoutMultiplier = 0;
485 port->timeouts.ReadTotalTimeoutConstant = 0;
486 port->timeouts.WriteTotalTimeoutMultiplier = 0;
487 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 488
e3dcf906 489 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 490 sp_close(port);
491 RETURN_FAIL("SetCommTimeouts() failed");
492 }
e3dcf906
ML		 493
494 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 495#define INIT_OVERLAPPED(ovl) do { \
496 memset(&port->ovl, 0, sizeof(port->ovl)); \
497 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
498 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
499 == INVALID_HANDLE_VALUE) { \
500 sp_close(port); \
501 RETURN_FAIL(#ovl "CreateEvent() failed"); \
502 } \
503} while (0)
504
505 INIT_OVERLAPPED(read_ovl);
506 INIT_OVERLAPPED(write_ovl);
507 INIT_OVERLAPPED(wait_ovl);
508
509 /* Set event mask for RX and error events. */
510 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 511 sp_close(port);
6f1186aa 512 RETURN_FAIL("SetCommMask() failed");
e3dcf906 513 }
6f1186aa 514
e3dcf906 515 port->writing = FALSE;
47fcf8ec 516 port->wait_running = FALSE;
e3dcf906 517
47fcf8ec
ML		 518 ret = restart_wait(port);
519
520 if (ret < 0) {
521 sp_close(port);
522 RETURN_CODEVAL(ret);
523 }
74510d4b 524#else
e3dcf906 525 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 526
74510d4b 527 /* Map 'flags' to the OS-specific settings. */
276ef1b9 528 if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
74510d4b 529 flags_local |= O_RDWR;
a036341b 530 else if (flags & SP_MODE_READ)
74510d4b 531 flags_local |= O_RDONLY;
a036341b
ML		 532 else if (flags & SP_MODE_WRITE)
533 flags_local |= O_WRONLY;
74510d4b
ML		 534
535 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 536 RETURN_FAIL("open() failed");
bccc7c9f 537#endif
9cb98459 538
e33ab9aa
ML		 539 ret = get_config(port, &data, &config);
540
eac329d2 541 if (ret < 0) {
e33ab9aa 542 sp_close(port);
c33efc48 543 RETURN_CODEVAL(ret);
e33ab9aa 544 }
9cb98459 545
bccc7c9f
ML		 546 /* Set sane port settings. */
547#ifdef _WIN32
548 data.dcb.fBinary = TRUE;
549 data.dcb.fDsrSensitivity = FALSE;
550 data.dcb.fErrorChar = FALSE;
551 data.dcb.fNull = FALSE;
34442106 552 data.dcb.fAbortOnError = FALSE;
bccc7c9f 553#else
b251be4b 554 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 555 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
556#ifdef IUCLC
557 data.term.c_iflag &= ~IUCLC;
558#endif
559 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
560#ifdef OLCUC
561 data.term.c_oflag &= ~OLCUC;
562#endif
563#ifdef NLDLY
564 data.term.c_oflag &= ~NLDLY;
565#endif
566#ifdef CRDLY
567 data.term.c_oflag &= ~CRDLY;
568#endif
569#ifdef TABDLY
570 data.term.c_oflag &= ~TABDLY;
571#endif
572#ifdef BSDLY
573 data.term.c_oflag &= ~BSDLY;
574#endif
575#ifdef VTDLY
576 data.term.c_oflag &= ~VTDLY;
577#endif
578#ifdef FFDLY
579 data.term.c_oflag &= ~FFDLY;
580#endif
b251be4b 581#ifdef OFILL
9cb98459
ML		 582 data.term.c_oflag &= ~OFILL;
583#endif
c3e05092 584 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 585 data.term.c_cc[VMIN] = 0;
b251be4b 586 data.term.c_cc[VTIME] = 0;
9cb98459 587
b251be4b
ML		 588 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
589 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 590#endif
9cb98459 591
537942c9 592#ifdef _WIN32
1a2a1544
UH		 593 if (ClearCommError(port->hdl, &errors, &status) == 0)
594 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 595#endif
596
e33ab9aa
ML		 597 ret = set_config(port, &data, &config);
598
eac329d2 599 if (ret < 0) {
e33ab9aa 600 sp_close(port);
c33efc48 601 RETURN_CODEVAL(ret);
e33ab9aa 602 }
74510d4b 603
c33efc48 604 RETURN_OK();
74510d4b
ML		 605}
606
970f279a 607SP_API enum sp_return sp_close(struct sp_port *port)
74510d4b 608{
c33efc48
ML		 609 TRACE("%p", port);
610
dec10e31 611 CHECK_OPEN_PORT();
74510d4b 612
7890cef6 613 DEBUG_FMT("Closing port %s", port->name);
ea667be7 614
74510d4b
ML		 615#ifdef _WIN32
616 /* Returns non-zero upon success, 0 upon failure. */
617 if (CloseHandle(port->hdl) == 0)
dc422c04 618 RETURN_FAIL("Port CloseHandle() failed");
8f471c66 619 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 620
621 /* Close event handles for overlapped structures. */
622#define CLOSE_OVERLAPPED(ovl) do { \
623 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
624 CloseHandle(port->ovl.hEvent) == 0) \
625 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
626} while (0)
627 CLOSE_OVERLAPPED(read_ovl);
628 CLOSE_OVERLAPPED(write_ovl);
629 CLOSE_OVERLAPPED(wait_ovl);
630
74510d4b
ML		 631#else
632 /* Returns 0 upon success, -1 upon failure. */
633 if (close(port->fd) == -1)
c33efc48 634 RETURN_FAIL("close() failed");
8f471c66 635 port->fd = -1;
74510d4b
ML		 636#endif
637
c33efc48 638 RETURN_OK();
74510d4b
ML		 639}
640
970f279a 641SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 642{
00d8c56d 643 TRACE("%p, 0x%x", port, buffers);
c33efc48 644
dec10e31
ML		 645 CHECK_OPEN_PORT();
646
647 if (buffers > SP_BUF_BOTH)
648 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 649
0ba3e49b 650 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7 651
7890cef6
ML		 652 DEBUG_FMT("Flushing %s buffers on port %s",
653 buffer_names[buffers], port->name);
ea667be7 654
74510d4b 655#ifdef _WIN32
fd8fd11a
ML		 656 DWORD flags = 0;
657 if (buffers & SP_BUF_INPUT)
658 flags |= PURGE_RXCLEAR;
659 if (buffers & SP_BUF_OUTPUT)
660 flags |= PURGE_TXCLEAR;
661
74510d4b 662 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 663 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 664 RETURN_FAIL("PurgeComm() failed");
47fcf8ec
ML		 665
666 if (buffers & SP_BUF_INPUT)
667 TRY(restart_wait(port));
74510d4b 668#else
fd8fd11a 669 int flags = 0;
ad749855 670 if (buffers == SP_BUF_BOTH)
fd8fd11a 671 flags = TCIOFLUSH;
ad749855 672 else if (buffers == SP_BUF_INPUT)
fd8fd11a 673 flags = TCIFLUSH;
ad749855 674 else if (buffers == SP_BUF_OUTPUT)
fd8fd11a
ML		 675 flags = TCOFLUSH;
676
74510d4b 677 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 678 if (tcflush(port->fd, flags) < 0)
c33efc48 679 RETURN_FAIL("tcflush() failed");
74510d4b 680#endif
c33efc48 681 RETURN_OK();
74510d4b
ML		 682}
683
970f279a 684SP_API enum sp_return sp_drain(struct sp_port *port)
69a3739c 685{
c33efc48
ML		 686 TRACE("%p", port);
687
dec10e31 688 CHECK_OPEN_PORT();
69a3739c 689
7890cef6 690 DEBUG_FMT("Draining port %s", port->name);
ea667be7 691
69a3739c
ML		 692#ifdef _WIN32
693 /* Returns non-zero upon success, 0 upon failure. */
694 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 695 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 696 RETURN_OK();
69a3739c 697#else
2c827b21
ML		 698 int result;
699 while (1) {
33fd8804
ML		 700#ifdef __ANDROID__
701 int arg = 1;
702 result = ioctl(port->fd, TCSBRK, &arg);
703#else
2c827b21 704 result = tcdrain(port->fd);
33fd8804 705#endif
2c827b21
ML		 706 if (result < 0) {
707 if (errno == EINTR) {
708 DEBUG("tcdrain() was interrupted");
709 continue;
710 } else {
711 RETURN_FAIL("tcdrain() failed");
712 }
713 } else {
714 RETURN_OK();
715 }
716 }
69a3739c 717#endif
69a3739c
ML		 718}
719
970f279a 720SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf,
1b91c6ea 721 size_t count, unsigned int timeout_ms)
e3dcf906 722{
1b91c6ea 723 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 724
725 CHECK_OPEN_PORT();
726
727 if (!buf)
728 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
729
1b91c6ea 730 if (timeout_ms)
7890cef6 731 DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms",
1b91c6ea 732 count, port->name, timeout_ms);
e3dcf906 733 else
7890cef6
ML		 734 DEBUG_FMT("Writing %d bytes to port %s, no timeout",
735 count, port->name);
e3dcf906
ML		 736
737 if (count == 0)
9caa2e86 738 RETURN_INT(0);
e3dcf906
ML		 739
740#ifdef _WIN32
741 DWORD bytes_written = 0;
742 BOOL result;
743
744 /* Wait for previous non-blocking write to complete, if any. */
745 if (port->writing) {
746 DEBUG("Waiting for previous write to complete");
747 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
748 port->writing = 0;
749 if (!result)
750 RETURN_FAIL("Previous write failed to complete");
751 DEBUG("Previous write completed");
752 }
753
754 /* Set timeout. */
27a58c05
ML		 755 if (port->timeouts.WriteTotalTimeoutConstant != timeout_ms) {
756 port->timeouts.WriteTotalTimeoutConstant = timeout_ms;
757 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
758 RETURN_FAIL("SetCommTimeouts() failed");
759 }
e3dcf906
ML		 760
761 /* Start write. */
bbe566fe 762 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl)) {
e3dcf906 763 DEBUG("Write completed immediately");
9caa2e86 764 RETURN_INT(count);
bbe566fe
ML		 765 } else if (GetLastError() == ERROR_IO_PENDING) {
766 DEBUG("Waiting for write to complete");
aee7d691
UH		 767 if (GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE) == 0) {
768 if (GetLastError() == ERROR_SEM_TIMEOUT) {
769 DEBUG("Write timed out");
770 RETURN_INT(0);
771 } else {
772 RETURN_FAIL("GetOverlappedResult() failed");
773 }
774 }
bbe566fe
ML		 775 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
776 RETURN_INT(bytes_written);
777 } else {
778 RETURN_FAIL("WriteFile() failed");
e3dcf906
ML		 779 }
780#else
781 size_t bytes_written = 0;
782 unsigned char *ptr = (unsigned char *) buf;
783 struct timeval start, delta, now, end = {0, 0};
76222ee5 784 int started = 0;
e3dcf906
ML		 785 fd_set fds;
786 int result;
787
1b91c6ea 788 if (timeout_ms) {
e3dcf906
ML		 789 /* Get time at start of operation. */
790 gettimeofday(&start, NULL);
791 /* Define duration of timeout. */
1b91c6ea
UH		 792 delta.tv_sec = timeout_ms / 1000;
793 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 794 /* Calculate time at which we should give up. */
795 timeradd(&start, &delta, &end);
796 }
797
772c5861
ML		 798 FD_ZERO(&fds);
799 FD_SET(port->fd, &fds);
800
e3dcf906 801 /* Loop until we have written the requested number of bytes. */
dc422c04 802 while (bytes_written < count) {
76222ee5
ML		 803 /*
804 * Check timeout only if we have run select() at least once,
805 * to avoid any issues if a short timeout is reached before
806 * select() is even run.
807 */
808 if (timeout_ms && started) {
e3dcf906 809 gettimeofday(&now, NULL);
c3cee38c
ML		 810 if (timercmp(&now, &end, >))
811 /* Timeout has expired. */
812 break;
e3dcf906
ML		 813 timersub(&end, &now, &delta);
814 }
1b91c6ea 815 result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
76222ee5 816 started = 1;
63a17c64
ML		 817 if (result < 0) {
818 if (errno == EINTR) {
819 DEBUG("select() call was interrupted, repeating");
820 continue;
821 } else {
822 RETURN_FAIL("select() failed");
823 }
824 } else if (result == 0) {
c3cee38c
ML		 825 /* Timeout has expired. */
826 break;
e3dcf906
ML		 827 }
828
829 /* Do write. */
830 result = write(port->fd, ptr, count - bytes_written);
831
832 if (result < 0) {
833 if (errno == EAGAIN)
834 /* This shouldn't happen because we did a select() first, but handle anyway. */
835 continue;
836 else
837 /* This is an actual failure. */
838 RETURN_FAIL("write() failed");
839 }
840
841 bytes_written += result;
842 ptr += result;
843 }
844
c3cee38c
ML		 845 if (bytes_written < count)
846 DEBUG("Write timed out");
847
9caa2e86 848 RETURN_INT(bytes_written);
e3dcf906
ML		 849#endif
850}
851
970f279a
AJ		 852SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
853 const void *buf, size_t count)
74510d4b 854{
c33efc48
ML		 855 TRACE("%p, %p, %d", port, buf, count);
856
dec10e31 857 CHECK_OPEN_PORT();
74510d4b
ML		 858
859 if (!buf)
c33efc48 860 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 861
7890cef6 862 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 863
a3cb91f5 864 if (count == 0)
9caa2e86 865 RETURN_INT(0);
a3cb91f5 866
74510d4b
ML		 867#ifdef _WIN32
868 DWORD written = 0;
0765af56 869 BYTE *ptr = (BYTE *) buf;
f92f1f0c 870
e3dcf906
ML		 871 /* Check whether previous write is complete. */
872 if (port->writing) {
873 if (HasOverlappedIoCompleted(&port->write_ovl)) {
874 DEBUG("Previous write completed");
875 port->writing = 0;
876 } else {
877 DEBUG("Previous write not complete");
878 /* Can't take a new write until the previous one finishes. */
9caa2e86 879 RETURN_INT(0);
a3cb91f5 880 }
e3dcf906 881 }
a3cb91f5 882
e3dcf906 883 /* Set timeout. */
27a58c05
ML		 884 if (port->timeouts.WriteTotalTimeoutConstant != 0) {
885 port->timeouts.WriteTotalTimeoutConstant = 0;
886 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
887 RETURN_FAIL("SetCommTimeouts() failed");
888 }
e3dcf906 889
dc422c04
UH		 890 /*
891 * Keep writing data until the OS has to actually start an async IO
892 * for it. At that point we know the buffer is full.
893 */
894 while (written < count) {
e3dcf906
ML		 895 /* Copy first byte of user buffer. */
896 port->pending_byte = *ptr++;
897
898 /* Start asynchronous write. */
899 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
900 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 901 if (HasOverlappedIoCompleted(&port->write_ovl)) {
902 DEBUG("Asynchronous write completed immediately");
903 port->writing = 0;
904 written++;
905 continue;
906 } else {
907 DEBUG("Asynchronous write running");
908 port->writing = 1;
9caa2e86 909 RETURN_INT(++written);
64d99621 910 }
a3cb91f5 911 } else {
e3dcf906
ML		 912 /* Actual failure of some kind. */
913 RETURN_FAIL("WriteFile() failed");
a3cb91f5 914 }
e3dcf906 915 } else {
9af8cff3 916 DEBUG("Single byte written immediately");
e3dcf906 917 written++;
a3cb91f5
ML		 918 }
919 }
920
9af8cff3 921 DEBUG("All bytes written immediately");
e3dcf906 922
9caa2e86 923 RETURN_INT(written);
74510d4b
ML		 924#else
925 /* Returns the number of bytes written, or -1 upon failure. */
926 ssize_t written = write(port->fd, buf, count);
f92f1f0c 927
74510d4b 928 if (written < 0)
c33efc48 929 RETURN_FAIL("write() failed");
74510d4b 930 else
9caa2e86 931 RETURN_INT(written);
74510d4b
ML		 932#endif
933}
934
94a314a8
ML		 935#ifdef _WIN32
936/* Restart wait operation if buffer was emptied. */
937static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read)
938{
8ebfaf89
ML		 939 DWORD errors;
940 COMSTAT comstat;
94a314a8 941
21ae5ce1
ML		 942 if (bytes_read == 0)
943 RETURN_OK();
944
8ebfaf89
ML		 945 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
946 RETURN_FAIL("ClearCommError() failed");
94a314a8 947
8ebfaf89 948 if (comstat.cbInQue == 0)
94a314a8
ML		 949 TRY(restart_wait(port));
950
951 RETURN_OK();
952}
953#endif
954
970f279a 955SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
1b91c6ea 956 size_t count, unsigned int timeout_ms)
e3dcf906 957{
1b91c6ea 958 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 959
960 CHECK_OPEN_PORT();
961
962 if (!buf)
963 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
964
1b91c6ea 965 if (timeout_ms)
7890cef6 966 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
1b91c6ea 967 count, port->name, timeout_ms);
e3dcf906 968 else
7890cef6
ML		 969 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
970 count, port->name);
e3dcf906
ML		 971
972 if (count == 0)
9caa2e86 973 RETURN_INT(0);
e3dcf906
ML		 974
975#ifdef _WIN32
976 DWORD bytes_read = 0;
977
978 /* Set timeout. */
27a58c05 979 if (port->timeouts.ReadIntervalTimeout != 0 ||
0188a545 980 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 981 port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
982 port->timeouts.ReadIntervalTimeout = 0;
0188a545 983 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 984 port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
985 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
986 RETURN_FAIL("SetCommTimeouts() failed");
987 }
e3dcf906
ML		 988
989 /* Start read. */
bbe566fe 990 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) {
e3dcf906 991 DEBUG("Read completed immediately");
6f1186aa 992 bytes_read = count;
bbe566fe
ML		 993 } else if (GetLastError() == ERROR_IO_PENDING) {
994 DEBUG("Waiting for read to complete");
27911925
ML		 995 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
996 RETURN_FAIL("GetOverlappedResult() failed");
bbe566fe
ML		 997 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
998 } else {
999 RETURN_FAIL("ReadFile() failed");
6f1186aa
ML		 1000 }
1001
94a314a8 1002 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 1003
9caa2e86 1004 RETURN_INT(bytes_read);
6f1186aa 1005
e3dcf906
ML		 1006#else
1007 size_t bytes_read = 0;
1008 unsigned char *ptr = (unsigned char *) buf;
1009 struct timeval start, delta, now, end = {0, 0};
76222ee5 1010 int started = 0;
e3dcf906
ML		 1011 fd_set fds;
1012 int result;
1013
1b91c6ea 1014 if (timeout_ms) {
e3dcf906
ML		 1015 /* Get time at start of operation. */
1016 gettimeofday(&start, NULL);
1017 /* Define duration of timeout. */
1b91c6ea
UH		 1018 delta.tv_sec = timeout_ms / 1000;
1019 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 1020 /* Calculate time at which we should give up. */
1021 timeradd(&start, &delta, &end);
1022 }
1023
772c5861
ML		 1024 FD_ZERO(&fds);
1025 FD_SET(port->fd, &fds);
1026
e3dcf906 1027 /* Loop until we have the requested number of bytes. */
dc422c04 1028 while (bytes_read < count) {
76222ee5
ML		 1029 /*
1030 * Check timeout only if we have run select() at least once,
1031 * to avoid any issues if a short timeout is reached before
1032 * select() is even run.
1033 */
1034 if (timeout_ms && started) {
e3dcf906
ML		 1035 gettimeofday(&now, NULL);
1036 if (timercmp(&now, &end, >))
1037 /* Timeout has expired. */
c3cee38c 1038 break;
e3dcf906
ML		 1039 timersub(&end, &now, &delta);
1040 }
1b91c6ea 1041 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
76222ee5 1042 started = 1;
63a17c64
ML		 1043 if (result < 0) {
1044 if (errno == EINTR) {
1045 DEBUG("select() call was interrupted, repeating");
1046 continue;
1047 } else {
1048 RETURN_FAIL("select() failed");
1049 }
1050 } else if (result == 0) {
c3cee38c
ML		 1051 /* Timeout has expired. */
1052 break;
e3dcf906
ML		 1053 }
1054
1055 /* Do read. */
1056 result = read(port->fd, ptr, count - bytes_read);
1057
1058 if (result < 0) {
1059 if (errno == EAGAIN)
76222ee5
ML		 1060 /*
1061 * This shouldn't happen because we did a
1062 * select() first, but handle anyway.
1063 */
e3dcf906
ML		 1064 continue;
1065 else
1066 /* This is an actual failure. */
1067 RETURN_FAIL("read() failed");
1068 }
1069
1070 bytes_read += result;
1071 ptr += result;
1072 }
1073
c3cee38c
ML		 1074 if (bytes_read < count)
1075 DEBUG("Read timed out");
1076
9caa2e86 1077 RETURN_INT(bytes_read);
e3dcf906
ML		 1078#endif
1079}
1080
e5c2630e
ML		 1081SP_API enum sp_return sp_blocking_read_next(struct sp_port *port, void *buf,
1082 size_t count, unsigned int timeout_ms)
1083{
1084 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
1085
1086 CHECK_OPEN_PORT();
1087
1088 if (!buf)
1089 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
1090
1091 if (count == 0)
1092 RETURN_ERROR(SP_ERR_ARG, "Zero count");
1093
1094 if (timeout_ms)
1095 DEBUG_FMT("Reading next max %d bytes from port %s, timeout %d ms",
1096 count, port->name, timeout_ms);
1097 else
1098 DEBUG_FMT("Reading next max %d bytes from port %s, no timeout",
1099 count, port->name);
1100
1101#ifdef _WIN32
1102 DWORD bytes_read = 0;
1103
1104 /* If timeout_ms == 0, set maximum timeout. */
1105 DWORD timeout_val = (timeout_ms == 0 ? MAXDWORD - 1 : timeout_ms);
1106
1107 /* Set timeout. */
1108 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
1109 port->timeouts.ReadTotalTimeoutMultiplier != MAXDWORD ||
1110 port->timeouts.ReadTotalTimeoutConstant != timeout_val) {
1111 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1112 port->timeouts.ReadTotalTimeoutMultiplier = MAXDWORD;
1113 port->timeouts.ReadTotalTimeoutConstant = timeout_val;
1114 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1115 RETURN_FAIL("SetCommTimeouts() failed");
1116 }
1117
1118 /* Loop until we have at least one byte, or timeout is reached. */
1119 while (bytes_read == 0) {
1120 /* Start read. */
888fb45d 1121 if (ReadFile(port->hdl, buf, count, &bytes_read, &port->read_ovl)) {
e5c2630e 1122 DEBUG("Read completed immediately");
e5c2630e
ML		 1123 } else if (GetLastError() == ERROR_IO_PENDING) {
1124 DEBUG("Waiting for read to complete");
1125 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1126 RETURN_FAIL("GetOverlappedResult() failed");
1127 if (bytes_read > 0) {
1128 DEBUG("Read completed");
1129 } else if (timeout_ms > 0) {
1130 DEBUG("Read timed out");
1131 break;
1132 } else {
1133 DEBUG("Restarting read");
1134 }
1135 } else {
1136 RETURN_FAIL("ReadFile() failed");
1137 }
1138 }
1139
1140 TRY(restart_wait_if_needed(port, bytes_read));
1141
1142 RETURN_INT(bytes_read);
1143
1144#else
1145 size_t bytes_read = 0;
1146 struct timeval start, delta, now, end = {0, 0};
1147 int started = 0;
1148 fd_set fds;
1149 int result;
1150
1151 if (timeout_ms) {
1152 /* Get time at start of operation. */
1153 gettimeofday(&start, NULL);
1154 /* Define duration of timeout. */
1155 delta.tv_sec = timeout_ms / 1000;
1156 delta.tv_usec = (timeout_ms % 1000) * 1000;
1157 /* Calculate time at which we should give up. */
1158 timeradd(&start, &delta, &end);
1159 }
1160
1161 FD_ZERO(&fds);
1162 FD_SET(port->fd, &fds);
1163
1164 /* Loop until we have at least one byte, or timeout is reached. */
1165 while (bytes_read == 0) {
1166 /*
1167 * Check timeout only if we have run select() at least once,
1168 * to avoid any issues if a short timeout is reached before
1169 * select() is even run.
1170 */
1171 if (timeout_ms && started) {
1172 gettimeofday(&now, NULL);
1173 if (timercmp(&now, &end, >))
1174 /* Timeout has expired. */
1175 break;
1176 timersub(&end, &now, &delta);
1177 }
1178 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
1179 started = 1;
1180 if (result < 0) {
1181 if (errno == EINTR) {
1182 DEBUG("select() call was interrupted, repeating");
1183 continue;
1184 } else {
1185 RETURN_FAIL("select() failed");
1186 }
1187 } else if (result == 0) {
1188 /* Timeout has expired. */
1189 break;
1190 }
1191
1192 /* Do read. */
1193 result = read(port->fd, buf, count);
1194
1195 if (result < 0) {
1196 if (errno == EAGAIN)
1197 /* This shouldn't happen because we did a select() first, but handle anyway. */
1198 continue;
1199 else
1200 /* This is an actual failure. */
1201 RETURN_FAIL("read() failed");
1202 }
1203
1204 bytes_read = result;
1205 }
1206
1207 if (bytes_read == 0)
1208 DEBUG("Read timed out");
1209
1210 RETURN_INT(bytes_read);
1211#endif
1212}
1213
970f279a
AJ		 1214SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1215 size_t count)
74510d4b 1216{
c33efc48
ML		 1217 TRACE("%p, %p, %d", port, buf, count);
1218
dec10e31 1219 CHECK_OPEN_PORT();
74510d4b
ML		 1220
1221 if (!buf)
c33efc48 1222 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1223
7890cef6 1224 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1225
74510d4b 1226#ifdef _WIN32
e3dcf906 1227 DWORD bytes_read;
f92f1f0c 1228
e3dcf906 1229 /* Set timeout. */
27a58c05 1230 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
0188a545 1231 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 1232 port->timeouts.ReadTotalTimeoutConstant != 0) {
1233 port->timeouts.ReadIntervalTimeout = MAXDWORD;
0188a545 1234 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 1235 port->timeouts.ReadTotalTimeoutConstant = 0;
1236 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1237 RETURN_FAIL("SetCommTimeouts() failed");
1238 }
e3dcf906
ML		 1239
1240 /* Do read. */
1241 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
ae2c5825
ML		 1242 if (GetLastError() != ERROR_IO_PENDING)
1243 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1244
1245 /* Get number of bytes read. */
ae2c5825 1246 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, FALSE) == 0)
1622ef60 1247 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1248
94a314a8 1249 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 1250
9caa2e86 1251 RETURN_INT(bytes_read);
74510d4b
ML		 1252#else
1253 ssize_t bytes_read;
f92f1f0c 1254
74510d4b 1255 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1256 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1257 if (errno == EAGAIN)
1258 /* No bytes available. */
33d5ff47
ML		 1259 bytes_read = 0;
1260 else
1261 /* This is an actual failure. */
1262 RETURN_FAIL("read() failed");
1263 }
9caa2e86 1264 RETURN_INT(bytes_read);
74510d4b
ML		 1265#endif
1266}
1267
970f279a 1268SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1269{
1270 TRACE("%p", port);
1271
1272 CHECK_OPEN_PORT();
1273
7890cef6 1274 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1275
1276#ifdef _WIN32
1277 DWORD errors;
1278 COMSTAT comstat;
1279
1280 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1281 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1282 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1283#else
1284 int bytes_waiting;
1285 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1286 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1287 RETURN_INT(bytes_waiting);
3353c22f
ML		 1288#endif
1289}
1290
970f279a 1291SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1292{
1293 TRACE("%p", port);
1294
1295 CHECK_OPEN_PORT();
1296
7890cef6 1297 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1298
1299#ifdef _WIN32
1300 DWORD errors;
1301 COMSTAT comstat;
1302
1303 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1304 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1305 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1306#else
1307 int bytes_waiting;
1308 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1309 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1310 RETURN_INT(bytes_waiting);
3353c22f
ML		 1311#endif
1312}
1313
970f279a 1314SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1315{
1316 struct sp_event_set *result;
1317
1318 TRACE("%p", result_ptr);
1319
1320 if (!result_ptr)
1321 RETURN_ERROR(SP_ERR_ARG, "Null result");
1322
1323 *result_ptr = NULL;
1324
1325 if (!(result = malloc(sizeof(struct sp_event_set))))
1326 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1327
1328 memset(result, 0, sizeof(struct sp_event_set));
1329
1330 *result_ptr = result;
1331
1332 RETURN_OK();
1333}
1334
1335static enum sp_return add_handle(struct sp_event_set *event_set,
1336 event_handle handle, enum sp_event mask)
1337{
1338 void *new_handles;
1339 enum sp_event *new_masks;
1340
1341 TRACE("%p, %d, %d", event_set, handle, mask);
1342
1343 if (!(new_handles = realloc(event_set->handles,
1344 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1345 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1346
ac323d80
UH		 1347 event_set->handles = new_handles;
1348
6f1186aa 1349 if (!(new_masks = realloc(event_set->masks,
ac323d80 1350 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1351 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1352
6f1186aa
ML		 1353 event_set->masks = new_masks;
1354
1355 ((event_handle *) event_set->handles)[event_set->count] = handle;
1356 event_set->masks[event_set->count] = mask;
1357
1358 event_set->count++;
1359
1360 RETURN_OK();
1361}
1362
970f279a 1363SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1364 const struct sp_port *port, enum sp_event mask)
1365{
1366 TRACE("%p, %p, %d", event_set, port, mask);
1367
1368 if (!event_set)
1369 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1370
1371 if (!port)
1372 RETURN_ERROR(SP_ERR_ARG, "Null port");
1373
1374 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1375 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1376
1377 if (!mask)
1378 RETURN_OK();
1379
1380#ifdef _WIN32
1381 enum sp_event handle_mask;
1382 if ((handle_mask = mask & SP_EVENT_TX_READY))
1383 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1384 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1385 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1386#else
1387 TRY(add_handle(event_set, port->fd, mask));
1388#endif
1389
1390 RETURN_OK();
1391}
1392
970f279a 1393SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1394{
1395 TRACE("%p", event_set);
1396
1397 if (!event_set) {
1398 DEBUG("Null event set");
1399 RETURN();
1400 }
1401
1402 DEBUG("Freeing event set");
1403
1404 if (event_set->handles)
1405 free(event_set->handles);
1406 if (event_set->masks)
1407 free(event_set->masks);
1408
1409 free(event_set);
1410
1411 RETURN();
1412}
1413
970f279a 1414SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1b91c6ea 1415 unsigned int timeout_ms)
6f1186aa 1416{
1b91c6ea 1417 TRACE("%p, %d", event_set, timeout_ms);
6f1186aa
ML		 1418
1419 if (!event_set)
1420 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1421
1422#ifdef _WIN32
1423 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1b91c6ea 1424 timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
6f1186aa
ML		 1425 RETURN_FAIL("WaitForMultipleObjects() failed");
1426
1427 RETURN_OK();
1428#else
1429 struct timeval start, delta, now, end = {0, 0};
127d8d0c
ML		 1430 const struct timeval max_delta = {
1431 (INT_MAX / 1000), (INT_MAX % 1000) * 1000};
1432 int started = 0, timeout_overflow = 0;
1b91c6ea 1433 int result, timeout_remaining_ms;
6f1186aa
ML		 1434 struct pollfd *pollfds;
1435 unsigned int i;
1436
1437 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1438 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1439
1440 for (i = 0; i < event_set->count; i++) {
1441 pollfds[i].fd = ((int *) event_set->handles)[i];
1442 pollfds[i].events = 0;
1443 pollfds[i].revents = 0;
1444 if (event_set->masks[i] & SP_EVENT_RX_READY)
1445 pollfds[i].events |= POLLIN;
1446 if (event_set->masks[i] & SP_EVENT_TX_READY)
1447 pollfds[i].events |= POLLOUT;
1448 if (event_set->masks[i] & SP_EVENT_ERROR)
1449 pollfds[i].events |= POLLERR;
1450 }
1451
1b91c6ea 1452 if (timeout_ms) {
6f1186aa
ML		 1453 /* Get time at start of operation. */
1454 gettimeofday(&start, NULL);
1455 /* Define duration of timeout. */
1b91c6ea
UH		 1456 delta.tv_sec = timeout_ms / 1000;
1457 delta.tv_usec = (timeout_ms % 1000) * 1000;
6f1186aa
ML		 1458 /* Calculate time at which we should give up. */
1459 timeradd(&start, &delta, &end);
1460 }
1461
1462 /* Loop until an event occurs. */
dc422c04 1463 while (1) {
76222ee5
ML		 1464 /*
1465 * Check timeout only if we have run poll() at least once,
1466 * to avoid any issues if a short timeout is reached before
1467 * poll() is even run.
1468 */
6b8eee06
ML		 1469 if (!timeout_ms) {
1470 timeout_remaining_ms = -1;
1471 } else if (!started) {
127d8d0c
ML		 1472 timeout_overflow = (timeout_ms > INT_MAX);
1473 timeout_remaining_ms = timeout_overflow ? INT_MAX : timeout_ms;
6b8eee06 1474 } else {
6f1186aa
ML		 1475 gettimeofday(&now, NULL);
1476 if (timercmp(&now, &end, >)) {
dc422c04 1477 DEBUG("Wait timed out");
6f1186aa
ML		 1478 break;
1479 }
1480 timersub(&end, &now, &delta);
127d8d0c
ML		 1481 if ((timeout_overflow = timercmp(&delta, &max_delta, >)))
1482 delta = max_delta;
1b91c6ea 1483 timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
6f1186aa
ML		 1484 }
1485
6b8eee06 1486 result = poll(pollfds, event_set->count, timeout_remaining_ms);
76222ee5 1487 started = 1;
6f1186aa
ML		 1488
1489 if (result < 0) {
1490 if (errno == EINTR) {
1491 DEBUG("poll() call was interrupted, repeating");
1492 continue;
1493 } else {
1494 free(pollfds);
1495 RETURN_FAIL("poll() failed");
1496 }
1497 } else if (result == 0) {
1498 DEBUG("poll() timed out");
127d8d0c
ML		 1499 if (!timeout_overflow)
1500 break;
6f1186aa
ML		 1501 } else {
1502 DEBUG("poll() completed");
1503 break;
1504 }
1505 }
1506
1507 free(pollfds);
1508 RETURN_OK();
1509#endif
1510}
1511
5cea279a 1512#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1513static enum sp_return get_baudrate(int fd, int *baudrate)
1514{
1515 void *data;
1516
c33efc48
ML		 1517 TRACE("%d, %p", fd, baudrate);
1518
ea667be7
ML		 1519 DEBUG("Getting baud rate");
1520
7a6d2196 1521 if (!(data = malloc(get_termios_size())))
c33efc48 1522 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1523
8d43110a
ML		 1524 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1525 free(data);
dc422c04 1526 RETURN_FAIL("Getting termios failed");
8d43110a 1527 }
7a6d2196
ML		 1528
1529 *baudrate = get_termios_speed(data);
1530
8d43110a
ML		 1531 free(data);
1532
c33efc48 1533 RETURN_OK();
7a6d2196
ML		 1534}
1535
1536static enum sp_return set_baudrate(int fd, int baudrate)
1537{
1538 void *data;
1539
c33efc48
ML		 1540 TRACE("%d, %d", fd, baudrate);
1541
ea667be7
ML		 1542 DEBUG("Getting baud rate");
1543
7a6d2196 1544 if (!(data = malloc(get_termios_size())))
c33efc48 1545 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1546
8d43110a
ML		 1547 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1548 free(data);
dc422c04 1549 RETURN_FAIL("Getting termios failed");
8d43110a 1550 }
7a6d2196 1551
ea667be7
ML		 1552 DEBUG("Setting baud rate");
1553
7a6d2196
ML		 1554 set_termios_speed(data, baudrate);
1555
8d43110a
ML		 1556 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1557 free(data);
dc422c04 1558 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1559 }
1560
1561 free(data);
7a6d2196 1562
c33efc48 1563 RETURN_OK();
7a6d2196 1564}
5cea279a 1565#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1566
1567#ifdef USE_TERMIOX
bd791fe1 1568static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1569{
bd791fe1 1570 void *termx;
40978c2b 1571
bd791fe1 1572 TRACE("%d, %p", fd, data);
c33efc48 1573
ea667be7
ML		 1574 DEBUG("Getting advanced flow control");
1575
bd791fe1 1576 if (!(termx = malloc(get_termiox_size())))
c33efc48 1577 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1578
bd791fe1
ML		 1579 if (ioctl(fd, TCGETX, termx) < 0) {
1580 free(termx);
dc422c04 1581 RETURN_FAIL("Getting termiox failed");
8d43110a 1582 }
40978c2b 1583
bd791fe1
ML		 1584 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1585 &data->dtr_flow, &data->dsr_flow);
40978c2b 1586
bd791fe1 1587 free(termx);
8d43110a 1588
c33efc48 1589 RETURN_OK();
40978c2b
ML		 1590}
1591
bd791fe1 1592static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1593{
bd791fe1 1594 void *termx;
40978c2b 1595
bd791fe1 1596 TRACE("%d, %p", fd, data);
c33efc48 1597
ea667be7
ML		 1598 DEBUG("Getting advanced flow control");
1599
bd791fe1 1600 if (!(termx = malloc(get_termiox_size())))
c33efc48 1601 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1602
bd791fe1
ML		 1603 if (ioctl(fd, TCGETX, termx) < 0) {
1604 free(termx);
dc422c04 1605 RETURN_FAIL("Getting termiox failed");
8d43110a 1606 }
40978c2b 1607
ea667be7
ML		 1608 DEBUG("Setting advanced flow control");
1609
bd791fe1
ML		 1610 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1611 data->dtr_flow, data->dsr_flow);
40978c2b 1612
bd791fe1
ML		 1613 if (ioctl(fd, TCSETX, termx) < 0) {
1614 free(termx);
dc422c04 1615 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1616 }
1617
bd791fe1 1618 free(termx);
40978c2b 1619
c33efc48 1620 RETURN_OK();
40978c2b
ML		 1621}
1622#endif /* USE_TERMIOX */
7a6d2196 1623
eb6ed20f
ML		 1624static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1625 struct sp_port_config *config)
8094e4a0 1626{
da2748bf 1627 unsigned int i;
cbf628c7 1628
c33efc48
ML		 1629 TRACE("%p, %p, %p", port, data, config);
1630
7890cef6 1631 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1632
8094e4a0 1633#ifdef _WIN32
e33ab9aa 1634 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1635 RETURN_FAIL("GetCommState() failed");
8094e4a0 1636
067417af 1637 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1638 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1639 config->baudrate = std_baudrates[i].value;
1640 break;
1641 }
1642 }
1643
1644 if (i == NUM_STD_BAUDRATES)
1645 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1646 config->baudrate = data->dcb.BaudRate;
067417af 1647
e33ab9aa 1648 config->bits = data->dcb.ByteSize;
067417af 1649
e33ab9aa
ML		 1650 if (data->dcb.fParity)
1651 switch (data->dcb.Parity) {
067417af
ML		 1652 case NOPARITY:
1653 config->parity = SP_PARITY_NONE;
1654 break;
e432ce60
ML		 1655 case ODDPARITY:
1656 config->parity = SP_PARITY_ODD;
1657 break;
067417af
ML		 1658 case EVENPARITY:
1659 config->parity = SP_PARITY_EVEN;
1660 break;
e432ce60
ML		 1661 case MARKPARITY:
1662 config->parity = SP_PARITY_MARK;
1663 break;
1664 case SPACEPARITY:
1665 config->parity = SP_PARITY_SPACE;
067417af
ML		 1666 break;
1667 default:
1668 config->parity = -1;
1669 }
1670 else
1671 config->parity = SP_PARITY_NONE;
1672
e33ab9aa 1673 switch (data->dcb.StopBits) {
067417af
ML		 1674 case ONESTOPBIT:
1675 config->stopbits = 1;
1676 break;
1677 case TWOSTOPBITS:
1678 config->stopbits = 2;
1679 break;
1680 default:
1681 config->stopbits = -1;
1682 }
1683
e33ab9aa 1684 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1685 case RTS_CONTROL_DISABLE:
1686 config->rts = SP_RTS_OFF;
1687 break;
1688 case RTS_CONTROL_ENABLE:
1689 config->rts = SP_RTS_ON;
1690 break;
1691 case RTS_CONTROL_HANDSHAKE:
1692 config->rts = SP_RTS_FLOW_CONTROL;
1693 break;
1694 default:
1695 config->rts = -1;
067417af
ML		 1696 }
1697
e33ab9aa 1698 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1699
e33ab9aa 1700 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1701 case DTR_CONTROL_DISABLE:
1702 config->dtr = SP_DTR_OFF;
1703 break;
1704 case DTR_CONTROL_ENABLE:
1705 config->dtr = SP_DTR_ON;
1706 break;
1707 case DTR_CONTROL_HANDSHAKE:
1708 config->dtr = SP_DTR_FLOW_CONTROL;
1709 break;
1710 default:
1711 config->dtr = -1;
067417af
ML		 1712 }
1713
e33ab9aa
ML		 1714 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1715
c6754b45
ML		 1716 if (data->dcb.fInX) {
1717 if (data->dcb.fOutX)
1718 config->xon_xoff = SP_XONXOFF_INOUT;
1719 else
1720 config->xon_xoff = SP_XONXOFF_IN;
1721 } else {
1722 if (data->dcb.fOutX)
1723 config->xon_xoff = SP_XONXOFF_OUT;
1724 else
1725 config->xon_xoff = SP_XONXOFF_DISABLED;
1726 }
1727
e33ab9aa
ML		 1728#else // !_WIN32
1729
1730 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1731 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1732
1733 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1734 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1735
1736#ifdef USE_TERMIOX
bd791fe1 1737 int ret = get_flow(port->fd, data);
68ec29db
ML		 1738
1739 if (ret == SP_ERR_FAIL && errno == EINVAL)
1740 data->termiox_supported = 0;
1741 else if (ret < 0)
c33efc48 1742 RETURN_CODEVAL(ret);
68ec29db
ML		 1743 else
1744 data->termiox_supported = 1;
1745#else
1746 data->termiox_supported = 0;
40978c2b
ML		 1747#endif
1748
067417af 1749 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1750 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1751 config->baudrate = std_baudrates[i].value;
1752 break;
1753 }
1754 }
1755
31b3a8f5
MH		 1756 if (i == NUM_STD_BAUDRATES) {
1757#ifdef __APPLE__
1758 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1759#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1760 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1761#else
067417af 1762 config->baudrate = -1;
31b3a8f5
MH		 1763#endif
1764 }
067417af 1765
e33ab9aa 1766 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1767 case CS8:
1768 config->bits = 8;
1769 break;
1770 case CS7:
1771 config->bits = 7;
1772 break;
1773 case CS6:
1774 config->bits = 6;
1775 break;
1776 case CS5:
1777 config->bits = 5;
1778 break;
1779 default:
1780 config->bits = -1;
1781 }
1782
e33ab9aa 1783 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1784 config->parity = SP_PARITY_NONE;
e33ab9aa 1785 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1786 config->parity = -1;
c3e05092 1787#ifdef CMSPAR
e432ce60
ML		 1788 else if (data->term.c_cflag & CMSPAR)
1789 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1790#endif
067417af 1791 else
e33ab9aa 1792 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1793
e33ab9aa 1794 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1795
e33ab9aa 1796 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1797 config->rts = SP_RTS_FLOW_CONTROL;
1798 config->cts = SP_CTS_FLOW_CONTROL;
1799 } else {
bd791fe1 1800 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1801 config->rts = SP_RTS_FLOW_CONTROL;
1802 else
1803 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1804
bd791fe1 1805 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1806 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1807 }
1808
bd791fe1 1809 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1810 config->dtr = SP_DTR_FLOW_CONTROL;
1811 else
1812 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1813
bd791fe1 1814 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1815 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1816
e29b93a5
ML		 1817 if (data->term.c_iflag & IXOFF) {
1818 if (data->term.c_iflag & IXON)
1819 config->xon_xoff = SP_XONXOFF_INOUT;
1820 else
1821 config->xon_xoff = SP_XONXOFF_IN;
1822 } else {
1823 if (data->term.c_iflag & IXON)
1824 config->xon_xoff = SP_XONXOFF_OUT;
1825 else
1826 config->xon_xoff = SP_XONXOFF_DISABLED;
1827 }
067417af
ML		 1828#endif
1829
c33efc48 1830 RETURN_OK();
067417af
ML		 1831}
1832
7a6d2196 1833static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1834 const struct sp_port_config *config)
18fc2dd1 1835{
e33ab9aa 1836 unsigned int i;
31b3a8f5
MH		 1837#ifdef __APPLE__
1838 BAUD_TYPE baud_nonstd;
1839
1840 baud_nonstd = B0;
1841#endif
5cea279a 1842#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1843 int baud_nonstd = 0;
1844#endif
18fc2dd1 1845
c33efc48
ML		 1846 TRACE("%p, %p, %p", port, data, config);
1847
7890cef6 1848 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1849
e33ab9aa 1850#ifdef _WIN32
eac329d2 1851 if (config->baudrate >= 0) {
e33ab9aa
ML		 1852 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1853 if (config->baudrate == std_baudrates[i].value) {
1854 data->dcb.BaudRate = std_baudrates[i].index;
1855 break;
1856 }
1857 }
18fc2dd1 1858
e33ab9aa
ML		 1859 if (i == NUM_STD_BAUDRATES)
1860 data->dcb.BaudRate = config->baudrate;
1861 }
18fc2dd1 1862
e33ab9aa
ML		 1863 if (config->bits >= 0)
1864 data->dcb.ByteSize = config->bits;
1865
1866 if (config->parity >= 0) {
1867 switch (config->parity) {
e33ab9aa
ML		 1868 case SP_PARITY_NONE:
1869 data->dcb.Parity = NOPARITY;
1870 break;
e432ce60
ML		 1871 case SP_PARITY_ODD:
1872 data->dcb.Parity = ODDPARITY;
1873 break;
e33ab9aa
ML		 1874 case SP_PARITY_EVEN:
1875 data->dcb.Parity = EVENPARITY;
1876 break;
e432ce60
ML		 1877 case SP_PARITY_MARK:
1878 data->dcb.Parity = MARKPARITY;
1879 break;
1880 case SP_PARITY_SPACE:
1881 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1882 break;
1883 default:
c33efc48 1884 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1885 }
18fc2dd1
ML		 1886 }
1887
e33ab9aa
ML		 1888 if (config->stopbits >= 0) {
1889 switch (config->stopbits) {
1890 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1891 case 1:
1892 data->dcb.StopBits = ONESTOPBIT;
1893 break;
1894 case 2:
1895 data->dcb.StopBits = TWOSTOPBITS;
1896 break;
1897 default:
c33efc48 1898 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1899 }
1900 }
1901
1902 if (config->rts >= 0) {
1903 switch (config->rts) {
1904 case SP_RTS_OFF:
1905 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1906 break;
1907 case SP_RTS_ON:
1908 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1909 break;
1910 case SP_RTS_FLOW_CONTROL:
1911 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1912 break;
1913 default:
c33efc48 1914 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1915 }
1916 }
1917
1918 if (config->cts >= 0) {
1919 switch (config->cts) {
1920 case SP_CTS_IGNORE:
1921 data->dcb.fOutxCtsFlow = FALSE;
1922 break;
1923 case SP_CTS_FLOW_CONTROL:
1924 data->dcb.fOutxCtsFlow = TRUE;
1925 break;
1926 default:
c33efc48 1927 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1928 }
1929 }
1930
1931 if (config->dtr >= 0) {
1932 switch (config->dtr) {
1933 case SP_DTR_OFF:
1934 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1935 break;
1936 case SP_DTR_ON:
1937 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1938 break;
1939 case SP_DTR_FLOW_CONTROL:
1940 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1941 break;
1942 default:
c33efc48 1943 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1944 }
1945 }
1946
1947 if (config->dsr >= 0) {
1948 switch (config->dsr) {
1949 case SP_DSR_IGNORE:
1950 data->dcb.fOutxDsrFlow = FALSE;
1951 break;
1952 case SP_DSR_FLOW_CONTROL:
1953 data->dcb.fOutxDsrFlow = TRUE;
1954 break;
1955 default:
c33efc48 1956 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1957 }
18fc2dd1
ML		 1958 }
1959
e33ab9aa
ML		 1960 if (config->xon_xoff >= 0) {
1961 switch (config->xon_xoff) {
1962 case SP_XONXOFF_DISABLED:
1963 data->dcb.fInX = FALSE;
1964 data->dcb.fOutX = FALSE;
1965 break;
1966 case SP_XONXOFF_IN:
1967 data->dcb.fInX = TRUE;
1968 data->dcb.fOutX = FALSE;
1969 break;
1970 case SP_XONXOFF_OUT:
1971 data->dcb.fInX = FALSE;
1972 data->dcb.fOutX = TRUE;
1973 break;
1974 case SP_XONXOFF_INOUT:
1975 data->dcb.fInX = TRUE;
1976 data->dcb.fOutX = TRUE;
1977 break;
1978 default:
c33efc48 1979 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1980 }
1981 }
1982
1983 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1984 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1985
31b3a8f5 1986#else /* !_WIN32 */
e33ab9aa 1987
7a6d2196
ML		 1988 int controlbits;
1989
eac329d2 1990 if (config->baudrate >= 0) {
e33ab9aa
ML		 1991 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1992 if (config->baudrate == std_baudrates[i].value) {
1993 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1994 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1995
1996 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1997 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1998 break;
1999 }
2000 }
2001
31b3a8f5
MH		 2002 /* Non-standard baud rate */
2003 if (i == NUM_STD_BAUDRATES) {
2004#ifdef __APPLE__
24abdb68 2005 /* Set "dummy" baud rate. */
31b3a8f5 2006 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 2007 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2008 baud_nonstd = config->baudrate;
5cea279a 2009#elif defined(USE_TERMIOS_SPEED)
7a6d2196 2010 baud_nonstd = 1;
31b3a8f5 2011#else
c33efc48 2012 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 2013#endif
2014 }
e33ab9aa
ML		 2015 }
2016
2017 if (config->bits >= 0) {
2018 data->term.c_cflag &= ~CSIZE;
2019 switch (config->bits) {
2020 case 8:
2021 data->term.c_cflag |= CS8;
2022 break;
2023 case 7:
2024 data->term.c_cflag |= CS7;
2025 break;
2026 case 6:
2027 data->term.c_cflag |= CS6;
2028 break;
23922313
UH		 2029 case 5:
2030 data->term.c_cflag |= CS5;
2031 break;
e33ab9aa 2032 default:
c33efc48 2033 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 2034 }
2035 }
2036
2037 if (config->parity >= 0) {
2038 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 2039 data->term.c_cflag &= ~(PARENB | PARODD);
2040#ifdef CMSPAR
2041 data->term.c_cflag &= ~CMSPAR;
2042#endif
e33ab9aa
ML		 2043 switch (config->parity) {
2044 case SP_PARITY_NONE:
2045 data->term.c_iflag |= IGNPAR;
2046 break;
2047 case SP_PARITY_EVEN:
2048 data->term.c_cflag |= PARENB;
2049 break;
2050 case SP_PARITY_ODD:
2051 data->term.c_cflag |= PARENB | PARODD;
2052 break;
afb518f0 2053#ifdef CMSPAR
e432ce60 2054 case SP_PARITY_MARK:
c3e05092 2055 data->term.c_cflag |= PARENB | PARODD;
c3e05092 2056 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 2057 break;
2058 case SP_PARITY_SPACE:
c3e05092 2059 data->term.c_cflag |= PARENB;
c3e05092 2060 data->term.c_cflag |= CMSPAR;
e432ce60 2061 break;
afb518f0
ML		 2062#else
2063 case SP_PARITY_MARK:
2064 case SP_PARITY_SPACE:
2065 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
2066#endif
e33ab9aa 2067 default:
c33efc48 2068 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 2069 }
2070 }
2071
2072 if (config->stopbits >= 0) {
2073 data->term.c_cflag &= ~CSTOPB;
2074 switch (config->stopbits) {
2075 case 1:
2076 data->term.c_cflag &= ~CSTOPB;
2077 break;
2078 case 2:
2079 data->term.c_cflag |= CSTOPB;
2080 break;
2081 default:
c33efc48 2082 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 2083 }
2084 }
2085
eac329d2 2086 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 2087 if (data->termiox_supported) {
bd791fe1 2088 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 2089 switch (config->rts) {
2090 case SP_RTS_OFF:
2091 case SP_RTS_ON:
2092 controlbits = TIOCM_RTS;
2093 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2094 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 2095 break;
2096 case SP_RTS_FLOW_CONTROL:
bd791fe1 2097 data->rts_flow = 1;
68ec29db
ML		 2098 break;
2099 default:
2100 break;
e33ab9aa 2101 }
68ec29db 2102 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 2103 data->cts_flow = 1;
e33ab9aa 2104
bd791fe1 2105 if (data->rts_flow && data->cts_flow)
e33ab9aa 2106 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 2107 else
2108 data->term.c_iflag &= ~CRTSCTS;
2109 } else {
2110 /* Asymmetric use of RTS/CTS not supported. */
2111 if (data->term.c_iflag & CRTSCTS) {
2112 /* Flow control can only be disabled for both RTS & CTS together. */
2113 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
2114 if (config->cts != SP_CTS_IGNORE)
c33efc48 2115 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 2116 }
2117 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
2118 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 2119 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 2120 }
e33ab9aa 2121 } else {
68ec29db
ML		 2122 /* Flow control can only be enabled for both RTS & CTS together. */
2123 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
2124 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 2125 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 2126 }
2127
2128 if (config->rts >= 0) {
2129 if (config->rts == SP_RTS_FLOW_CONTROL) {
2130 data->term.c_iflag |= CRTSCTS;
2131 } else {
2132 controlbits = TIOCM_RTS;
2133 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
2134 &controlbits) < 0)
c33efc48 2135 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 2136 }
e33ab9aa
ML		 2137 }
2138 }
2139 }
2140
eac329d2 2141 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 2142 if (data->termiox_supported) {
bd791fe1 2143 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 2144 switch (config->dtr) {
2145 case SP_DTR_OFF:
2146 case SP_DTR_ON:
2147 controlbits = TIOCM_DTR;
2148 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2149 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 2150 break;
2151 case SP_DTR_FLOW_CONTROL:
bd791fe1 2152 data->dtr_flow = 1;
68ec29db
ML		 2153 break;
2154 default:
2155 break;
2156 }
2157 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 2158 data->dsr_flow = 1;
68ec29db
ML		 2159 } else {
2160 /* DTR/DSR flow control not supported. */
2161 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 2162 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 2163
68ec29db
ML		 2164 if (config->dtr >= 0) {
2165 controlbits = TIOCM_DTR;
2166 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
2167 &controlbits) < 0)
c33efc48 2168 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 2169 }
e33ab9aa
ML		 2170 }
2171 }
2172
2173 if (config->xon_xoff >= 0) {
2174 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
2175 switch (config->xon_xoff) {
2176 case SP_XONXOFF_DISABLED:
2177 break;
2178 case SP_XONXOFF_IN:
2179 data->term.c_iflag |= IXOFF;
2180 break;
2181 case SP_XONXOFF_OUT:
2182 data->term.c_iflag |= IXON | IXANY;
2183 break;
2184 case SP_XONXOFF_INOUT:
2185 data->term.c_iflag |= IXON | IXOFF | IXANY;
2186 break;
2187 default:
c33efc48 2188 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2189 }
2190 }
2191
3f5c06d0 2192 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2193 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2194
2195#ifdef __APPLE__
2196 if (baud_nonstd != B0) {
2197 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2198 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2199 /*
2200 * Set baud rates in data->term to correct, but incompatible
2201 * with tcsetattr() value, same as delivered by tcgetattr().
2202 */
31b3a8f5 2203 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2204 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2205 }
7a6d2196 2206#elif defined(__linux__)
5cea279a 2207#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2208 if (baud_nonstd)
2209 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2210#endif
40978c2b 2211#ifdef USE_TERMIOX
68ec29db 2212 if (data->termiox_supported)
bd791fe1 2213 TRY(set_flow(port->fd, data));
40978c2b 2214#endif
7a6d2196 2215#endif
31b3a8f5
MH		 2216
2217#endif /* !_WIN32 */
e33ab9aa 2218
c33efc48 2219 RETURN_OK();
e33ab9aa
ML		 2220}
2221
970f279a 2222SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2223{
59131d60 2224 struct sp_port_config *config;
9b1502ef 2225
00d8c56d
UH		 2226 TRACE("%p", config_ptr);
2227
9b1502ef
ML		 2228 if (!config_ptr)
2229 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2230
59131d60
ML		 2231 *config_ptr = NULL;
2232
2233 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2234 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2235
59131d60
ML		 2236 config->baudrate = -1;
2237 config->bits = -1;
2238 config->parity = -1;
2239 config->stopbits = -1;
2240 config->rts = -1;
2241 config->cts = -1;
2242 config->dtr = -1;
2243 config->dsr = -1;
2244
2245 *config_ptr = config;
2246
9b1502ef
ML		 2247 RETURN_OK();
2248}
2249
970f279a 2250SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2251{
2252 TRACE("%p", config);
2253
2254 if (!config)
2255 DEBUG("Null config");
2256 else
2257 free(config);
2258
2259 RETURN();
2260}
2261
970f279a
AJ		 2262SP_API enum sp_return sp_get_config(struct sp_port *port,
2263 struct sp_port_config *config)
70cd37de
ML		 2264{
2265 struct port_data data;
2266
2267 TRACE("%p, %p", port, config);
2268
2269 CHECK_OPEN_PORT();
2270
2271 if (!config)
9b1502ef 2272 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2273
2274 TRY(get_config(port, &data, config));
2275
2276 RETURN_OK();
2277}
2278
970f279a
AJ		 2279SP_API enum sp_return sp_set_config(struct sp_port *port,
2280 const struct sp_port_config *config)
e33ab9aa 2281{
8f189c4c 2282 struct port_data data;
e33ab9aa
ML		 2283 struct sp_port_config prev_config;
2284
c33efc48
ML		 2285 TRACE("%p, %p", port, config);
2286
dec10e31 2287 CHECK_OPEN_PORT();
823690ae
ML		 2288
2289 if (!config)
c33efc48 2290 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2291
e33ab9aa
ML		 2292 TRY(get_config(port, &data, &prev_config));
2293 TRY(set_config(port, &data, config));
74510d4b 2294
c33efc48 2295 RETURN_OK();
74510d4b
ML		 2296}
2297
9b1502ef 2298#define CREATE_ACCESSORS(x, type) \
970f279a 2299SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2300 struct port_data data; \
e33ab9aa 2301 struct sp_port_config config; \
c33efc48 2302 TRACE("%p, %d", port, x); \
dec10e31 2303 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2304 TRY(get_config(port, &data, &config)); \
2305 config.x = x; \
2306 TRY(set_config(port, &data, &config)); \
c33efc48 2307 RETURN_OK(); \
9b1502ef 2308} \
970f279a
AJ		 2309SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2310 type *x) { \
00d8c56d 2311 TRACE("%p, %p", config, x); \
6aad5bdd
UH		 2312 if (!x) \
2313 RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \
9b1502ef
ML		 2314 if (!config) \
2315 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2316 *x = config->x; \
2317 RETURN_OK(); \
2318} \
970f279a
AJ		 2319SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2320 type x) { \
9b1502ef
ML		 2321 TRACE("%p, %d", config, x); \
2322 if (!config) \
2323 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2324 config->x = x; \
2325 RETURN_OK(); \
9069c2fb
ML		 2326}
2327
9b1502ef
ML		 2328CREATE_ACCESSORS(baudrate, int)
2329CREATE_ACCESSORS(bits, int)
2330CREATE_ACCESSORS(parity, enum sp_parity)
2331CREATE_ACCESSORS(stopbits, int)
2332CREATE_ACCESSORS(rts, enum sp_rts)
2333CREATE_ACCESSORS(cts, enum sp_cts)
2334CREATE_ACCESSORS(dtr, enum sp_dtr)
2335CREATE_ACCESSORS(dsr, enum sp_dsr)
2336CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2337
970f279a
AJ		 2338SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2339 enum sp_flowcontrol flowcontrol)
e33ab9aa 2340{
9b1502ef
ML		 2341 if (!config)
2342 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2343
2344 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2345 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2346
e33ab9aa 2347 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2348 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2349 else
9b1502ef 2350 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2351
2352 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2353 config->rts = SP_RTS_FLOW_CONTROL;
2354 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2355 } else {
9b1502ef
ML		 2356 if (config->rts == SP_RTS_FLOW_CONTROL)
2357 config->rts = SP_RTS_ON;
2358 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2359 }
2360
2361 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2362 config->dtr = SP_DTR_FLOW_CONTROL;
2363 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2364 } else {
9b1502ef
ML		 2365 if (config->dtr == SP_DTR_FLOW_CONTROL)
2366 config->dtr = SP_DTR_ON;
2367 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2368 }
2369
9b1502ef
ML		 2370 RETURN_OK();
2371}
2372
970f279a
AJ		 2373SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2374 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2375{
2376 struct port_data data;
2377 struct sp_port_config config;
2378
2379 TRACE("%p, %d", port, flowcontrol);
2380
2381 CHECK_OPEN_PORT();
2382
2383 TRY(get_config(port, &data, &config));
2384
2385 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2386
e33ab9aa
ML		 2387 TRY(set_config(port, &data, &config));
2388
c33efc48 2389 RETURN_OK();
e33ab9aa
ML		 2390}
2391
970f279a
AJ		 2392SP_API enum sp_return sp_get_signals(struct sp_port *port,
2393 enum sp_signal *signals)
8cf7c697 2394{
c33efc48
ML		 2395 TRACE("%p, %p", port, signals);
2396
dec10e31 2397 CHECK_OPEN_PORT();
8cf7c697
ML		 2398
2399 if (!signals)
c33efc48 2400 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2401
7890cef6 2402 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2403
8cf7c697
ML		 2404 *signals = 0;
2405#ifdef _WIN32
2406 DWORD bits;
2407 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2408 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2409 if (bits & MS_CTS_ON)
2410 *signals |= SP_SIG_CTS;
2411 if (bits & MS_DSR_ON)
2412 *signals |= SP_SIG_DSR;
8cf7c697 2413 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2414 *signals |= SP_SIG_DCD;
2415 if (bits & MS_RING_ON)
8cf7c697
ML		 2416 *signals |= SP_SIG_RI;
2417#else
2418 int bits;
2419 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2420 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2421 if (bits & TIOCM_CTS)
2422 *signals |= SP_SIG_CTS;
2423 if (bits & TIOCM_DSR)
2424 *signals |= SP_SIG_DSR;
2425 if (bits & TIOCM_CAR)
2426 *signals |= SP_SIG_DCD;
2427 if (bits & TIOCM_RNG)
2428 *signals |= SP_SIG_RI;
2429#endif
c33efc48 2430 RETURN_OK();
8cf7c697
ML		 2431}
2432
970f279a 2433SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2434{
c33efc48
ML		 2435 TRACE("%p", port);
2436
dec10e31 2437 CHECK_OPEN_PORT();
90cc3ee6
ML		 2438#ifdef _WIN32
2439 if (SetCommBreak(port->hdl) == 0)
c33efc48 2440 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2441#else
2442 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2443 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2444#endif
2445
c33efc48 2446 RETURN_OK();
90cc3ee6
ML		 2447}
2448
970f279a 2449SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2450{
c33efc48
ML		 2451 TRACE("%p", port);
2452
dec10e31 2453 CHECK_OPEN_PORT();
90cc3ee6
ML		 2454#ifdef _WIN32
2455 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2456 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2457#else
2458 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2459 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2460#endif
2461
c33efc48 2462 RETURN_OK();
90cc3ee6
ML		 2463}
2464
970f279a 2465SP_API int sp_last_error_code(void)
74510d4b 2466{
7890cef6 2467 TRACE_VOID();
74510d4b 2468#ifdef _WIN32
9caa2e86 2469 RETURN_INT(GetLastError());
74510d4b 2470#else
9caa2e86 2471 RETURN_INT(errno);
74510d4b
ML		 2472#endif
2473}
2474
970f279a 2475SP_API char *sp_last_error_message(void)
74510d4b 2476{
7890cef6 2477 TRACE_VOID();
c33efc48 2478
74510d4b 2479#ifdef _WIN32
9a0c4bbd 2480 TCHAR *message;
74510d4b
ML		 2481 DWORD error = GetLastError();
2482
9a0c4bbd 2483 DWORD length = FormatMessage(
74510d4b
ML		 2484 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2485 FORMAT_MESSAGE_FROM_SYSTEM |
2486 FORMAT_MESSAGE_IGNORE_INSERTS,
2487 NULL,
2488 error,
2489 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2490 (LPTSTR) &message,
2491 0, NULL );
2492
9a0c4bbd
ML		 2493 if (length >= 2 && message[length - 2] == '\r')
2494 message[length - 2] = '\0';
2495
9caa2e86 2496 RETURN_STRING(message);
74510d4b 2497#else
9caa2e86 2498 RETURN_STRING(strerror(errno));
74510d4b
ML		 2499#endif
2500}
2501
970f279a 2502SP_API void sp_free_error_message(char *message)
74510d4b 2503{
c33efc48
ML		 2504 TRACE("%s", message);
2505
74510d4b
ML		 2506#ifdef _WIN32
2507 LocalFree(message);
64eec30d
ML		 2508#else
2509 (void)message;
74510d4b 2510#endif
c33efc48
ML		 2511
2512 RETURN();
74510d4b 2513}
863b35e6 2514
970f279a 2515SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2516{
c33efc48
ML		 2517 TRACE("%p", handler);
2518
863b35e6 2519 sp_debug_handler = handler;
c33efc48
ML		 2520
2521 RETURN();
863b35e6
ML		 2522}
2523
970f279a 2524SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2525{
2526 va_list args;
2527 va_start(args, format);
2528 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2529 fputs("sp: ", stderr);
863b35e6
ML		 2530 vfprintf(stderr, format, args);
2531 }
2532 va_end(args);
2533}
524b0e14 2534
970f279a 2535SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2536{
2537 return SP_PACKAGE_VERSION_MAJOR;
2538}
2539
970f279a 2540SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2541{
2542 return SP_PACKAGE_VERSION_MINOR;
2543}
2544
970f279a 2545SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2546{
2547 return SP_PACKAGE_VERSION_MICRO;
2548}
2549
970f279a 2550SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2551{
2552 return SP_PACKAGE_VERSION_STRING;
2553}
2554
970f279a 2555SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2556{
2557 return SP_LIB_VERSION_CURRENT;
2558}
2559
970f279a 2560SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2561{
2562 return SP_LIB_VERSION_REVISION;
2563}
2564
970f279a 2565SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2566{
2567 return SP_LIB_VERSION_AGE;
2568}
2569
970f279a 2570SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2571{
2572 return SP_LIB_VERSION_STRING;
2573}
2574
2575/** @} */
Serial port access library