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[libserialport.git] / serialport.c
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74510d4b
ML		 1/*
2 * This file is part of the libserialport project.
3 *
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de>
6 * Copyright (C) 2013 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
f6a1fb65 24#include "libserialport.h"
e33dcf90 25#include "libserialport_internal.h"
da2748bf 26
6c6aebe7 27static const struct std_baudrate std_baudrates[] = {
da2748bf
ML		 28#ifdef _WIN32
29 /*
30 * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
31 * have documented CBR_* macros.
32 */
33 BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
34 BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
eac329d2 35 BAUD(115200), BAUD(128000), BAUD(256000),
da2748bf 36#else
eac329d2
UH		 37 BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
38 BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
39 BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
40 BAUD(230400),
da2748bf 41#if !defined(__APPLE__) && !defined(__OpenBSD__)
eac329d2 42 BAUD(460800),
da2748bf
ML		 43#endif
44#endif
45};
46
6c6aebe7
UH		 47#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
48
863b35e6
ML		 49void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
50
eb6ed20f
ML		 51static enum sp_return get_config(struct sp_port *port, struct port_data *data,
52 struct sp_port_config *config);
e33dcf90 53
eb6ed20f
ML		 54static enum sp_return set_config(struct sp_port *port, struct port_data *data,
55 const struct sp_port_config *config);
80186526 56
970f279a 57SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 58{
59 struct sp_port *port;
5a8810e2 60#ifndef NO_PORT_METADATA
a93fb468 61 enum sp_return ret;
5a8810e2 62#endif
5919c913 63 int len;
d54e9004 64
c33efc48
ML		 65 TRACE("%s, %p", portname, port_ptr);
66
32b5ac05 67 if (!port_ptr)
c33efc48 68 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 69
77f262c4
ML		 70 *port_ptr = NULL;
71
d4babed2 72 if (!portname)
c33efc48 73 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 74
7890cef6 75 DEBUG_FMT("Building structure for port %s", portname);
ea667be7 76
d54e9004 77 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 78 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 79
5919c913
ML		 80 len = strlen(portname) + 1;
81
eac329d2 82 if (!(port->name = malloc(len))) {
d54e9004 83 free(port);
c33efc48 84 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 85 }
86
87 memcpy(port->name, portname, len);
88
8f471c66 89#ifdef _WIN32
e31f2c6b 90 port->usb_path = NULL;
8f471c66
ML		 91 port->hdl = INVALID_HANDLE_VALUE;
92#else
93 port->fd = -1;
94#endif
95
e33dcf90
ML		 96 port->description = NULL;
97 port->transport = SP_TRANSPORT_NATIVE;
98 port->usb_bus = -1;
99 port->usb_address = -1;
100 port->usb_vid = -1;
101 port->usb_pid = -1;
102 port->usb_manufacturer = NULL;
103 port->usb_product = NULL;
104 port->usb_serial = NULL;
105 port->bluetooth_address = NULL;
106
e4ce975a 107#ifndef NO_PORT_METADATA
e33dcf90 108 if ((ret = get_port_details(port)) != SP_OK) {
a93fb468
AJ		 109 sp_free_port(port);
110 return ret;
111 }
e4ce975a 112#endif
a93fb468 113
77f262c4
ML		 114 *port_ptr = port;
115
c33efc48 116 RETURN_OK();
d54e9004
ML		 117}
118
970f279a 119SP_API char *sp_get_port_name(const struct sp_port *port)
1c5aae9d
ML		 120{
121 TRACE("%p", port);
122
123 if (!port)
124 return NULL;
125
9caa2e86 126 RETURN_STRING(port->name);
1c5aae9d
ML		 127}
128
970f279a 129SP_API char *sp_get_port_description(struct sp_port *port)
a93fb468
AJ		 130{
131 TRACE("%p", port);
132
133 if (!port || !port->description)
134 return NULL;
135
9caa2e86 136 RETURN_STRING(port->description);
a93fb468
AJ		 137}
138
970f279a 139SP_API enum sp_transport sp_get_port_transport(struct sp_port *port)
a93fb468
AJ		 140{
141 TRACE("%p", port);
142
143 if (!port)
144 RETURN_ERROR(SP_ERR_ARG, "Null port");
145
9caa2e86 146 RETURN_INT(port->transport);
a93fb468
AJ		 147}
148
970f279a
AJ		 149SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
150 int *usb_bus,int *usb_address)
a93fb468
AJ		 151{
152 TRACE("%p", port);
153
154 if (!port)
155 RETURN_ERROR(SP_ERR_ARG, "Null port");
156 if (port->transport != SP_TRANSPORT_USB)
157 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 158 if (port->usb_bus < 0 || port->usb_address < 0)
159 RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
a93fb468 160
dc422c04
UH		 161 if (usb_bus)
162 *usb_bus = port->usb_bus;
163 if (usb_address)
164 *usb_address = port->usb_address;
a93fb468
AJ		 165
166 RETURN_OK();
167}
168
970f279a
AJ		 169SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
170 int *usb_vid, int *usb_pid)
a93fb468
AJ		 171{
172 TRACE("%p", port);
173
174 if (!port)
175 RETURN_ERROR(SP_ERR_ARG, "Null port");
176 if (port->transport != SP_TRANSPORT_USB)
177 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 178 if (port->usb_vid < 0 || port->usb_pid < 0)
179 RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
a93fb468 180
dc422c04
UH		 181 if (usb_vid)
182 *usb_vid = port->usb_vid;
183 if (usb_pid)
184 *usb_pid = port->usb_pid;
a93fb468
AJ		 185
186 RETURN_OK();
187}
188
970f279a 189SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port)
a93fb468
AJ		 190{
191 TRACE("%p", port);
192
193 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
194 return NULL;
195
9caa2e86 196 RETURN_STRING(port->usb_manufacturer);
a93fb468
AJ		 197}
198
970f279a 199SP_API char *sp_get_port_usb_product(const struct sp_port *port)
a93fb468
AJ		 200{
201 TRACE("%p", port);
202
203 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
204 return NULL;
205
9caa2e86 206 RETURN_STRING(port->usb_product);
a93fb468
AJ		 207}
208
970f279a 209SP_API char *sp_get_port_usb_serial(const struct sp_port *port)
a93fb468
AJ		 210{
211 TRACE("%p", port);
212
213 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
214 return NULL;
215
9caa2e86 216 RETURN_STRING(port->usb_serial);
a93fb468
AJ		 217}
218
970f279a 219SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port)
a93fb468
AJ		 220{
221 TRACE("%p", port);
222
223 if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
224 || !port->bluetooth_address)
225 return NULL;
226
9caa2e86 227 RETURN_STRING(port->bluetooth_address);
a93fb468
AJ		 228}
229
970f279a
AJ		 230SP_API enum sp_return sp_get_port_handle(const struct sp_port *port,
231 void *result_ptr)
3c126654 232{
00d8c56d 233 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 234
235 if (!port)
236 RETURN_ERROR(SP_ERR_ARG, "Null port");
237
238#ifdef _WIN32
239 HANDLE *handle_ptr = result_ptr;
240 *handle_ptr = port->hdl;
241#else
242 int *fd_ptr = result_ptr;
243 *fd_ptr = port->fd;
244#endif
245
246 RETURN_OK();
247}
248
970f279a
AJ		 249SP_API enum sp_return sp_copy_port(const struct sp_port *port,
250 struct sp_port **copy_ptr)
32b5ac05 251{
c33efc48
ML		 252 TRACE("%p, %p", port, copy_ptr);
253
32b5ac05 254 if (!copy_ptr)
c33efc48 255 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 256
257 *copy_ptr = NULL;
258
c33efc48
ML		 259 if (!port)
260 RETURN_ERROR(SP_ERR_ARG, "Null port");
261
262 if (!port->name)
263 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 264
ea667be7
ML		 265 DEBUG("Copying port structure");
266
9caa2e86 267 RETURN_INT(sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 268}
269
970f279a 270SP_API void sp_free_port(struct sp_port *port)
e3b2f7a4 271{
c33efc48
ML		 272 TRACE("%p", port);
273
00d8c56d 274 if (!port) {
c33efc48
ML		 275 DEBUG("Null port");
276 RETURN();
277 }
e3b2f7a4 278
ea667be7
ML		 279 DEBUG("Freeing port structure");
280
e3b2f7a4
ML		 281 if (port->name)
282 free(port->name);
a93fb468
AJ		 283 if (port->description)
284 free(port->description);
285 if (port->usb_manufacturer)
286 free(port->usb_manufacturer);
287 if (port->usb_product)
288 free(port->usb_product);
289 if (port->usb_serial)
290 free(port->usb_serial);
291 if (port->bluetooth_address)
292 free(port->bluetooth_address);
293#ifdef _WIN32
294 if (port->usb_path)
295 free(port->usb_path);
296#endif
e3b2f7a4
ML		 297
298 free(port);
c33efc48
ML		 299
300 RETURN();
e3b2f7a4
ML		 301}
302
970f279a
AJ		 303SP_PRIV struct sp_port **list_append(struct sp_port **list,
304 const char *portname)
3b63f34d
ML		 305{
306 void *tmp;
307 unsigned int count;
f92f1f0c 308
3b63f34d 309 for (count = 0; list[count]; count++);
d54e9004 310 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 311 goto fail;
312 list = tmp;
77f262c4 313 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 314 goto fail;
db2794ce 315 list[count + 1] = NULL;
3b63f34d 316 return list;
f92f1f0c 317
3b63f34d
ML		 318fail:
319 sp_free_port_list(list);
320 return NULL;
321}
322
970f279a 323SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 324{
d54e9004 325 struct sp_port **list;
48a4076f 326 int ret;
24c1a4bb 327
c33efc48
ML		 328 TRACE("%p", list_ptr);
329
dec10e31
ML		 330 if (!list_ptr)
331 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
332
ea667be7
ML		 333 DEBUG("Enumerating ports");
334
d54e9004 335 if (!(list = malloc(sizeof(struct sp_port **))))
c33efc48 336 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 337
338 list[0] = NULL;
3b63f34d 339
e4ce975a
ML		 340#ifdef NO_ENUMERATION
341 ret = SP_ERR_SUPP;
342#else
48a4076f 343 ret = list_ports(&list);
e4ce975a 344#endif
77f262c4 345
6b93ede4
ML		 346 switch (ret) {
347 case SP_OK:
77f262c4 348 *list_ptr = list;
c33efc48 349 RETURN_OK();
6b93ede4 350 case SP_ERR_SUPP:
9af8cff3 351 DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
6b93ede4 352 default:
77f262c4
ML		 353 if (list)
354 sp_free_port_list(list);
77f262c4 355 *list_ptr = NULL;
c33efc48 356 return ret;
77f262c4 357 }
3b63f34d
ML		 358}
359
970f279a 360SP_API void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 361{
362 unsigned int i;
f92f1f0c 363
c33efc48
ML		 364 TRACE("%p", list);
365
dec10e31
ML		 366 if (!list) {
367 DEBUG("Null list");
368 RETURN();
369 }
370
ea667be7
ML		 371 DEBUG("Freeing port list");
372
3b63f34d 373 for (i = 0; list[i]; i++)
e3b2f7a4 374 sp_free_port(list[i]);
3b63f34d 375 free(list);
c33efc48
ML		 376
377 RETURN();
3b63f34d
ML		 378}
379
c33efc48 380#define CHECK_PORT() do { \
dc422c04 381 if (!port) \
c33efc48 382 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dc422c04 383 if (!port->name) \
dec10e31
ML		 384 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
385} while (0)
386#ifdef _WIN32
387#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 388 if (port->hdl == INVALID_HANDLE_VALUE) \
389 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 390} while (0)
74510d4b 391#else
dec10e31 392#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 393 if (port->fd < 0) \
394 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 395} while (0)
74510d4b 396#endif
dec10e31
ML		 397#define CHECK_OPEN_PORT() do { \
398 CHECK_PORT(); \
399 CHECK_PORT_HANDLE(); \
400} while (0)
74510d4b 401
47fcf8ec
ML		 402#ifdef WIN32
403/** To be called after port receive buffer is emptied. */
404static enum sp_return restart_wait(struct sp_port *port)
405{
406 DWORD wait_result;
407
408 if (port->wait_running) {
409 /* Check status of running wait operation. */
410 if (GetOverlappedResult(port->hdl, &port->wait_ovl,
411 &wait_result, FALSE)) {
412 DEBUG("Previous wait completed");
413 port->wait_running = FALSE;
414 } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
415 DEBUG("Previous wait still running");
416 RETURN_OK();
417 } else {
418 RETURN_FAIL("GetOverlappedResult() failed");
419 }
420 }
421
422 if (!port->wait_running) {
423 /* Start new wait operation. */
424 if (WaitCommEvent(port->hdl, &port->events,
425 &port->wait_ovl)) {
426 DEBUG("New wait returned, events already pending");
427 } else if (GetLastError() == ERROR_IO_PENDING) {
428 DEBUG("New wait running in background");
429 port->wait_running = TRUE;
430 } else {
431 RETURN_FAIL("WaitCommEvent() failed");
432 }
433 }
434
435 RETURN_OK();
436}
437#endif
438
970f279a 439SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 440{
bccc7c9f
ML		 441 struct port_data data;
442 struct sp_port_config config;
443 enum sp_return ret;
444
00d8c56d 445 TRACE("%p, 0x%x", port, flags);
c33efc48 446
dec10e31
ML		 447 CHECK_PORT();
448
276ef1b9 449 if (flags > SP_MODE_READ_WRITE)
dec10e31 450 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 451
7890cef6 452 DEBUG_FMT("Opening port %s", port->name);
ea667be7 453
74510d4b 454#ifdef _WIN32
537942c9 455 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 456 char *escaped_port_name;
537942c9 457 COMSTAT status;
99945a1f
ML		 458
459 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 460 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 461 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 462 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
463
74510d4b 464 /* Map 'flags' to the OS-specific settings. */
e3dcf906 465 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 466 if (flags & SP_MODE_READ)
467 desired_access |= GENERIC_READ;
468 if (flags & SP_MODE_WRITE)
74510d4b 469 desired_access |= GENERIC_WRITE;
74510d4b 470
99945a1f 471 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 472 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 473
474 free(escaped_port_name);
475
74510d4b 476 if (port->hdl == INVALID_HANDLE_VALUE)
dc422c04 477 RETURN_FAIL("Port CreateFile() failed");
e3dcf906
ML		 478
479 /* All timeouts initially disabled. */
480 port->timeouts.ReadIntervalTimeout = 0;
481 port->timeouts.ReadTotalTimeoutMultiplier = 0;
482 port->timeouts.ReadTotalTimeoutConstant = 0;
483 port->timeouts.WriteTotalTimeoutMultiplier = 0;
484 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 485
e3dcf906 486 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 487 sp_close(port);
488 RETURN_FAIL("SetCommTimeouts() failed");
489 }
e3dcf906
ML		 490
491 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 492#define INIT_OVERLAPPED(ovl) do { \
493 memset(&port->ovl, 0, sizeof(port->ovl)); \
494 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
495 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
496 == INVALID_HANDLE_VALUE) { \
497 sp_close(port); \
498 RETURN_FAIL(#ovl "CreateEvent() failed"); \
499 } \
500} while (0)
501
502 INIT_OVERLAPPED(read_ovl);
503 INIT_OVERLAPPED(write_ovl);
504 INIT_OVERLAPPED(wait_ovl);
505
506 /* Set event mask for RX and error events. */
507 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 508 sp_close(port);
6f1186aa 509 RETURN_FAIL("SetCommMask() failed");
e3dcf906 510 }
6f1186aa 511
e3dcf906 512 port->writing = FALSE;
47fcf8ec 513 port->wait_running = FALSE;
e3dcf906 514
47fcf8ec
ML		 515 ret = restart_wait(port);
516
517 if (ret < 0) {
518 sp_close(port);
519 RETURN_CODEVAL(ret);
520 }
74510d4b 521#else
e3dcf906 522 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 523
74510d4b 524 /* Map 'flags' to the OS-specific settings. */
276ef1b9 525 if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
74510d4b 526 flags_local |= O_RDWR;
a036341b 527 else if (flags & SP_MODE_READ)
74510d4b 528 flags_local |= O_RDONLY;
a036341b
ML		 529 else if (flags & SP_MODE_WRITE)
530 flags_local |= O_WRONLY;
74510d4b
ML		 531
532 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 533 RETURN_FAIL("open() failed");
bccc7c9f 534#endif
9cb98459 535
e33ab9aa
ML		 536 ret = get_config(port, &data, &config);
537
eac329d2 538 if (ret < 0) {
e33ab9aa 539 sp_close(port);
c33efc48 540 RETURN_CODEVAL(ret);
e33ab9aa 541 }
9cb98459 542
bccc7c9f
ML		 543 /* Set sane port settings. */
544#ifdef _WIN32
545 data.dcb.fBinary = TRUE;
546 data.dcb.fDsrSensitivity = FALSE;
547 data.dcb.fErrorChar = FALSE;
548 data.dcb.fNull = FALSE;
34442106 549 data.dcb.fAbortOnError = FALSE;
bccc7c9f 550#else
b251be4b 551 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 552 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
553#ifdef IUCLC
554 data.term.c_iflag &= ~IUCLC;
555#endif
556 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
557#ifdef OLCUC
558 data.term.c_oflag &= ~OLCUC;
559#endif
560#ifdef NLDLY
561 data.term.c_oflag &= ~NLDLY;
562#endif
563#ifdef CRDLY
564 data.term.c_oflag &= ~CRDLY;
565#endif
566#ifdef TABDLY
567 data.term.c_oflag &= ~TABDLY;
568#endif
569#ifdef BSDLY
570 data.term.c_oflag &= ~BSDLY;
571#endif
572#ifdef VTDLY
573 data.term.c_oflag &= ~VTDLY;
574#endif
575#ifdef FFDLY
576 data.term.c_oflag &= ~FFDLY;
577#endif
b251be4b 578#ifdef OFILL
9cb98459
ML		 579 data.term.c_oflag &= ~OFILL;
580#endif
c3e05092 581 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 582 data.term.c_cc[VMIN] = 0;
b251be4b 583 data.term.c_cc[VTIME] = 0;
9cb98459 584
b251be4b
ML		 585 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
586 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 587#endif
9cb98459 588
537942c9 589#ifdef _WIN32
1a2a1544
UH		 590 if (ClearCommError(port->hdl, &errors, &status) == 0)
591 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 592#endif
593
e33ab9aa
ML		 594 ret = set_config(port, &data, &config);
595
eac329d2 596 if (ret < 0) {
e33ab9aa 597 sp_close(port);
c33efc48 598 RETURN_CODEVAL(ret);
e33ab9aa 599 }
74510d4b 600
c33efc48 601 RETURN_OK();
74510d4b
ML		 602}
603
970f279a 604SP_API enum sp_return sp_close(struct sp_port *port)
74510d4b 605{
c33efc48
ML		 606 TRACE("%p", port);
607
dec10e31 608 CHECK_OPEN_PORT();
74510d4b 609
7890cef6 610 DEBUG_FMT("Closing port %s", port->name);
ea667be7 611
74510d4b
ML		 612#ifdef _WIN32
613 /* Returns non-zero upon success, 0 upon failure. */
614 if (CloseHandle(port->hdl) == 0)
dc422c04 615 RETURN_FAIL("Port CloseHandle() failed");
8f471c66 616 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 617
618 /* Close event handles for overlapped structures. */
619#define CLOSE_OVERLAPPED(ovl) do { \
620 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
621 CloseHandle(port->ovl.hEvent) == 0) \
622 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
623} while (0)
624 CLOSE_OVERLAPPED(read_ovl);
625 CLOSE_OVERLAPPED(write_ovl);
626 CLOSE_OVERLAPPED(wait_ovl);
627
74510d4b
ML		 628#else
629 /* Returns 0 upon success, -1 upon failure. */
630 if (close(port->fd) == -1)
c33efc48 631 RETURN_FAIL("close() failed");
8f471c66 632 port->fd = -1;
74510d4b
ML		 633#endif
634
c33efc48 635 RETURN_OK();
74510d4b
ML		 636}
637
970f279a 638SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 639{
00d8c56d 640 TRACE("%p, 0x%x", port, buffers);
c33efc48 641
dec10e31
ML		 642 CHECK_OPEN_PORT();
643
644 if (buffers > SP_BUF_BOTH)
645 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 646
0ba3e49b 647 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7 648
7890cef6
ML		 649 DEBUG_FMT("Flushing %s buffers on port %s",
650 buffer_names[buffers], port->name);
ea667be7 651
74510d4b 652#ifdef _WIN32
fd8fd11a
ML		 653 DWORD flags = 0;
654 if (buffers & SP_BUF_INPUT)
655 flags |= PURGE_RXCLEAR;
656 if (buffers & SP_BUF_OUTPUT)
657 flags |= PURGE_TXCLEAR;
658
74510d4b 659 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 660 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 661 RETURN_FAIL("PurgeComm() failed");
47fcf8ec
ML		 662
663 if (buffers & SP_BUF_INPUT)
664 TRY(restart_wait(port));
74510d4b 665#else
fd8fd11a 666 int flags = 0;
ad749855 667 if (buffers == SP_BUF_BOTH)
fd8fd11a 668 flags = TCIOFLUSH;
ad749855 669 else if (buffers == SP_BUF_INPUT)
fd8fd11a 670 flags = TCIFLUSH;
ad749855 671 else if (buffers == SP_BUF_OUTPUT)
fd8fd11a
ML		 672 flags = TCOFLUSH;
673
74510d4b 674 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 675 if (tcflush(port->fd, flags) < 0)
c33efc48 676 RETURN_FAIL("tcflush() failed");
74510d4b 677#endif
c33efc48 678 RETURN_OK();
74510d4b
ML		 679}
680
970f279a 681SP_API enum sp_return sp_drain(struct sp_port *port)
69a3739c 682{
c33efc48
ML		 683 TRACE("%p", port);
684
dec10e31 685 CHECK_OPEN_PORT();
69a3739c 686
7890cef6 687 DEBUG_FMT("Draining port %s", port->name);
ea667be7 688
69a3739c
ML		 689#ifdef _WIN32
690 /* Returns non-zero upon success, 0 upon failure. */
691 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 692 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 693 RETURN_OK();
69a3739c 694#else
2c827b21
ML		 695 int result;
696 while (1) {
33fd8804
ML		 697#ifdef __ANDROID__
698 int arg = 1;
699 result = ioctl(port->fd, TCSBRK, &arg);
700#else
2c827b21 701 result = tcdrain(port->fd);
33fd8804 702#endif
2c827b21
ML		 703 if (result < 0) {
704 if (errno == EINTR) {
705 DEBUG("tcdrain() was interrupted");
706 continue;
707 } else {
708 RETURN_FAIL("tcdrain() failed");
709 }
710 } else {
711 RETURN_OK();
712 }
713 }
69a3739c 714#endif
69a3739c
ML		 715}
716
970f279a
AJ		 717SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf,
718 size_t count, unsigned int timeout)
e3dcf906
ML		 719{
720 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
721
722 CHECK_OPEN_PORT();
723
724 if (!buf)
725 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
726
727 if (timeout)
7890cef6
ML		 728 DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms",
729 count, port->name, timeout);
e3dcf906 730 else
7890cef6
ML		 731 DEBUG_FMT("Writing %d bytes to port %s, no timeout",
732 count, port->name);
e3dcf906
ML		 733
734 if (count == 0)
9caa2e86 735 RETURN_INT(0);
e3dcf906
ML		 736
737#ifdef _WIN32
738 DWORD bytes_written = 0;
739 BOOL result;
740
741 /* Wait for previous non-blocking write to complete, if any. */
742 if (port->writing) {
743 DEBUG("Waiting for previous write to complete");
744 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
745 port->writing = 0;
746 if (!result)
747 RETURN_FAIL("Previous write failed to complete");
748 DEBUG("Previous write completed");
749 }
750
751 /* Set timeout. */
752 port->timeouts.WriteTotalTimeoutConstant = timeout;
753 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
754 RETURN_FAIL("SetCommTimeouts() failed");
755
756 /* Start write. */
757 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) {
758 if (GetLastError() == ERROR_IO_PENDING) {
759 DEBUG("Waiting for write to complete");
760 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
7890cef6 761 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
9caa2e86 762 RETURN_INT(bytes_written);
e3dcf906
ML		 763 } else {
764 RETURN_FAIL("WriteFile() failed");
765 }
766 } else {
767 DEBUG("Write completed immediately");
9caa2e86 768 RETURN_INT(count);
e3dcf906
ML		 769 }
770#else
771 size_t bytes_written = 0;
772 unsigned char *ptr = (unsigned char *) buf;
773 struct timeval start, delta, now, end = {0, 0};
774 fd_set fds;
775 int result;
776
777 if (timeout) {
778 /* Get time at start of operation. */
779 gettimeofday(&start, NULL);
780 /* Define duration of timeout. */
781 delta.tv_sec = timeout / 1000;
1b342042 782 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 783 /* Calculate time at which we should give up. */
784 timeradd(&start, &delta, &end);
785 }
786
787 /* Loop until we have written the requested number of bytes. */
dc422c04 788 while (bytes_written < count) {
e3dcf906
ML		 789 /* Wait until space is available. */
790 FD_ZERO(&fds);
791 FD_SET(port->fd, &fds);
792 if (timeout) {
793 gettimeofday(&now, NULL);
794 if (timercmp(&now, &end, >)) {
dc422c04 795 DEBUG("Write timed out");
9caa2e86 796 RETURN_INT(bytes_written);
e3dcf906
ML		 797 }
798 timersub(&end, &now, &delta);
799 }
800 result = select(port->fd + 1, NULL, &fds, NULL, timeout ? &delta : NULL);
63a17c64
ML		 801 if (result < 0) {
802 if (errno == EINTR) {
803 DEBUG("select() call was interrupted, repeating");
804 continue;
805 } else {
806 RETURN_FAIL("select() failed");
807 }
808 } else if (result == 0) {
dc422c04 809 DEBUG("Write timed out");
9caa2e86 810 RETURN_INT(bytes_written);
e3dcf906
ML		 811 }
812
813 /* Do write. */
814 result = write(port->fd, ptr, count - bytes_written);
815
816 if (result < 0) {
817 if (errno == EAGAIN)
818 /* This shouldn't happen because we did a select() first, but handle anyway. */
819 continue;
820 else
821 /* This is an actual failure. */
822 RETURN_FAIL("write() failed");
823 }
824
825 bytes_written += result;
826 ptr += result;
827 }
828
9caa2e86 829 RETURN_INT(bytes_written);
e3dcf906
ML		 830#endif
831}
832
970f279a
AJ		 833SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
834 const void *buf, size_t count)
74510d4b 835{
c33efc48
ML		 836 TRACE("%p, %p, %d", port, buf, count);
837
dec10e31 838 CHECK_OPEN_PORT();
74510d4b
ML		 839
840 if (!buf)
c33efc48 841 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 842
7890cef6 843 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 844
a3cb91f5 845 if (count == 0)
9caa2e86 846 RETURN_INT(0);
a3cb91f5 847
74510d4b
ML		 848#ifdef _WIN32
849 DWORD written = 0;
0765af56 850 BYTE *ptr = (BYTE *) buf;
f92f1f0c 851
e3dcf906
ML		 852 /* Check whether previous write is complete. */
853 if (port->writing) {
854 if (HasOverlappedIoCompleted(&port->write_ovl)) {
855 DEBUG("Previous write completed");
856 port->writing = 0;
857 } else {
858 DEBUG("Previous write not complete");
859 /* Can't take a new write until the previous one finishes. */
9caa2e86 860 RETURN_INT(0);
a3cb91f5 861 }
e3dcf906 862 }
a3cb91f5 863
e3dcf906
ML		 864 /* Set timeout. */
865 port->timeouts.WriteTotalTimeoutConstant = 0;
866 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
867 RETURN_FAIL("SetCommTimeouts() failed");
868
dc422c04
UH		 869 /*
870 * Keep writing data until the OS has to actually start an async IO
871 * for it. At that point we know the buffer is full.
872 */
873 while (written < count) {
e3dcf906
ML		 874 /* Copy first byte of user buffer. */
875 port->pending_byte = *ptr++;
876
877 /* Start asynchronous write. */
878 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
879 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 880 if (HasOverlappedIoCompleted(&port->write_ovl)) {
881 DEBUG("Asynchronous write completed immediately");
882 port->writing = 0;
883 written++;
884 continue;
885 } else {
886 DEBUG("Asynchronous write running");
887 port->writing = 1;
9caa2e86 888 RETURN_INT(++written);
64d99621 889 }
a3cb91f5 890 } else {
e3dcf906
ML		 891 /* Actual failure of some kind. */
892 RETURN_FAIL("WriteFile() failed");
a3cb91f5 893 }
e3dcf906 894 } else {
9af8cff3 895 DEBUG("Single byte written immediately");
e3dcf906 896 written++;
a3cb91f5
ML		 897 }
898 }
899
9af8cff3 900 DEBUG("All bytes written immediately");
e3dcf906 901
9caa2e86 902 RETURN_INT(written);
74510d4b
ML		 903#else
904 /* Returns the number of bytes written, or -1 upon failure. */
905 ssize_t written = write(port->fd, buf, count);
f92f1f0c 906
74510d4b 907 if (written < 0)
c33efc48 908 RETURN_FAIL("write() failed");
74510d4b 909 else
9caa2e86 910 RETURN_INT(written);
74510d4b
ML		 911#endif
912}
913
970f279a
AJ		 914SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
915 size_t count, unsigned int timeout)
e3dcf906
ML		 916{
917 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
918
919 CHECK_OPEN_PORT();
920
921 if (!buf)
922 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
923
924 if (timeout)
7890cef6
ML		 925 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
926 count, port->name, timeout);
e3dcf906 927 else
7890cef6
ML		 928 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
929 count, port->name);
e3dcf906
ML		 930
931 if (count == 0)
9caa2e86 932 RETURN_INT(0);
e3dcf906
ML		 933
934#ifdef _WIN32
935 DWORD bytes_read = 0;
47fcf8ec
ML		 936 DWORD bytes_remaining;
937 int ret;
e3dcf906
ML		 938
939 /* Set timeout. */
940 port->timeouts.ReadIntervalTimeout = 0;
941 port->timeouts.ReadTotalTimeoutConstant = timeout;
942 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
943 RETURN_FAIL("SetCommTimeouts() failed");
944
945 /* Start read. */
946 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) {
947 if (GetLastError() == ERROR_IO_PENDING) {
948 DEBUG("Waiting for read to complete");
949 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
7890cef6 950 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
e3dcf906
ML		 951 } else {
952 RETURN_FAIL("ReadFile() failed");
953 }
954 } else {
955 DEBUG("Read completed immediately");
6f1186aa
ML		 956 bytes_read = count;
957 }
958
47fcf8ec
ML		 959 ret = sp_input_waiting(port);
960
961 if (ret < 0)
962 RETURN_CODEVAL(ret);
963
964 bytes_remaining = ret;
965
966 /* Restart wait operation if buffer was emptied. */
967 if (bytes_read > 0 && bytes_remaining == 0)
968 TRY(restart_wait(port));
6f1186aa 969
9caa2e86 970 RETURN_INT(bytes_read);
6f1186aa 971
e3dcf906
ML		 972#else
973 size_t bytes_read = 0;
974 unsigned char *ptr = (unsigned char *) buf;
975 struct timeval start, delta, now, end = {0, 0};
976 fd_set fds;
977 int result;
978
979 if (timeout) {
980 /* Get time at start of operation. */
981 gettimeofday(&start, NULL);
982 /* Define duration of timeout. */
983 delta.tv_sec = timeout / 1000;
1b342042 984 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 985 /* Calculate time at which we should give up. */
986 timeradd(&start, &delta, &end);
987 }
988
989 /* Loop until we have the requested number of bytes. */
dc422c04 990 while (bytes_read < count) {
e3dcf906
ML		 991 /* Wait until data is available. */
992 FD_ZERO(&fds);
993 FD_SET(port->fd, &fds);
994 if (timeout) {
995 gettimeofday(&now, NULL);
996 if (timercmp(&now, &end, >))
997 /* Timeout has expired. */
9caa2e86 998 RETURN_INT(bytes_read);
e3dcf906
ML		 999 timersub(&end, &now, &delta);
1000 }
1001 result = select(port->fd + 1, &fds, NULL, NULL, timeout ? &delta : NULL);
63a17c64
ML		 1002 if (result < 0) {
1003 if (errno == EINTR) {
1004 DEBUG("select() call was interrupted, repeating");
1005 continue;
1006 } else {
1007 RETURN_FAIL("select() failed");
1008 }
1009 } else if (result == 0) {
dc422c04 1010 DEBUG("Read timed out");
9caa2e86 1011 RETURN_INT(bytes_read);
e3dcf906
ML		 1012 }
1013
1014 /* Do read. */
1015 result = read(port->fd, ptr, count - bytes_read);
1016
1017 if (result < 0) {
1018 if (errno == EAGAIN)
1019 /* This shouldn't happen because we did a select() first, but handle anyway. */
1020 continue;
1021 else
1022 /* This is an actual failure. */
1023 RETURN_FAIL("read() failed");
1024 }
1025
1026 bytes_read += result;
1027 ptr += result;
1028 }
1029
9caa2e86 1030 RETURN_INT(bytes_read);
e3dcf906
ML		 1031#endif
1032}
1033
970f279a
AJ		 1034SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1035 size_t count)
74510d4b 1036{
c33efc48
ML		 1037 TRACE("%p, %p, %d", port, buf, count);
1038
dec10e31 1039 CHECK_OPEN_PORT();
74510d4b
ML		 1040
1041 if (!buf)
c33efc48 1042 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1043
7890cef6 1044 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1045
74510d4b 1046#ifdef _WIN32
e3dcf906 1047 DWORD bytes_read;
47fcf8ec
ML		 1048 DWORD bytes_remaining;
1049 int ret;
f92f1f0c 1050
e3dcf906
ML		 1051 /* Set timeout. */
1052 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1053 port->timeouts.ReadTotalTimeoutConstant = 0;
1054 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1055 RETURN_FAIL("SetCommTimeouts() failed");
1056
1057 /* Do read. */
1058 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1059 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1060
1061 /* Get number of bytes read. */
1622ef60
ML		 1062 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1063 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1064
47fcf8ec
ML		 1065 ret = sp_input_waiting(port);
1066
1067 if (ret < 0)
1068 RETURN_CODEVAL(ret);
1069
1070 bytes_remaining = ret;
1071
1072 /* Restart wait operation if buffer was emptied. */
1073 if (bytes_read > 0 && bytes_remaining == 0)
1074 TRY(restart_wait(port));
6f1186aa 1075
9caa2e86 1076 RETURN_INT(bytes_read);
74510d4b
ML		 1077#else
1078 ssize_t bytes_read;
f92f1f0c 1079
74510d4b 1080 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1081 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1082 if (errno == EAGAIN)
1083 /* No bytes available. */
33d5ff47
ML		 1084 bytes_read = 0;
1085 else
1086 /* This is an actual failure. */
1087 RETURN_FAIL("read() failed");
1088 }
9caa2e86 1089 RETURN_INT(bytes_read);
74510d4b
ML		 1090#endif
1091}
1092
970f279a 1093SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1094{
1095 TRACE("%p", port);
1096
1097 CHECK_OPEN_PORT();
1098
7890cef6 1099 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1100
1101#ifdef _WIN32
1102 DWORD errors;
1103 COMSTAT comstat;
1104
1105 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1106 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1107 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1108#else
1109 int bytes_waiting;
1110 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1111 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1112 RETURN_INT(bytes_waiting);
3353c22f
ML		 1113#endif
1114}
1115
970f279a 1116SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1117{
1118 TRACE("%p", port);
1119
1120 CHECK_OPEN_PORT();
1121
7890cef6 1122 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1123
1124#ifdef _WIN32
1125 DWORD errors;
1126 COMSTAT comstat;
1127
1128 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1129 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1130 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1131#else
1132 int bytes_waiting;
1133 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1134 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1135 RETURN_INT(bytes_waiting);
3353c22f
ML		 1136#endif
1137}
1138
970f279a 1139SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1140{
1141 struct sp_event_set *result;
1142
1143 TRACE("%p", result_ptr);
1144
1145 if (!result_ptr)
1146 RETURN_ERROR(SP_ERR_ARG, "Null result");
1147
1148 *result_ptr = NULL;
1149
1150 if (!(result = malloc(sizeof(struct sp_event_set))))
1151 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1152
1153 memset(result, 0, sizeof(struct sp_event_set));
1154
1155 *result_ptr = result;
1156
1157 RETURN_OK();
1158}
1159
1160static enum sp_return add_handle(struct sp_event_set *event_set,
1161 event_handle handle, enum sp_event mask)
1162{
1163 void *new_handles;
1164 enum sp_event *new_masks;
1165
1166 TRACE("%p, %d, %d", event_set, handle, mask);
1167
1168 if (!(new_handles = realloc(event_set->handles,
1169 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1170 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa
ML		 1171
1172 if (!(new_masks = realloc(event_set->masks,
1173 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1174 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa
ML		 1175
1176 event_set->handles = new_handles;
1177 event_set->masks = new_masks;
1178
1179 ((event_handle *) event_set->handles)[event_set->count] = handle;
1180 event_set->masks[event_set->count] = mask;
1181
1182 event_set->count++;
1183
1184 RETURN_OK();
1185}
1186
970f279a 1187SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1188 const struct sp_port *port, enum sp_event mask)
1189{
1190 TRACE("%p, %p, %d", event_set, port, mask);
1191
1192 if (!event_set)
1193 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1194
1195 if (!port)
1196 RETURN_ERROR(SP_ERR_ARG, "Null port");
1197
1198 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1199 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1200
1201 if (!mask)
1202 RETURN_OK();
1203
1204#ifdef _WIN32
1205 enum sp_event handle_mask;
1206 if ((handle_mask = mask & SP_EVENT_TX_READY))
1207 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1208 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1209 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1210#else
1211 TRY(add_handle(event_set, port->fd, mask));
1212#endif
1213
1214 RETURN_OK();
1215}
1216
970f279a 1217SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1218{
1219 TRACE("%p", event_set);
1220
1221 if (!event_set) {
1222 DEBUG("Null event set");
1223 RETURN();
1224 }
1225
1226 DEBUG("Freeing event set");
1227
1228 if (event_set->handles)
1229 free(event_set->handles);
1230 if (event_set->masks)
1231 free(event_set->masks);
1232
1233 free(event_set);
1234
1235 RETURN();
1236}
1237
970f279a
AJ		 1238SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1239 unsigned int timeout)
6f1186aa
ML		 1240{
1241 TRACE("%p, %d", event_set, timeout);
1242
1243 if (!event_set)
1244 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1245
1246#ifdef _WIN32
1247 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1248 timeout ? timeout : INFINITE) == WAIT_FAILED)
1249 RETURN_FAIL("WaitForMultipleObjects() failed");
1250
1251 RETURN_OK();
1252#else
1253 struct timeval start, delta, now, end = {0, 0};
1254 int result, timeout_remaining;
1255 struct pollfd *pollfds;
1256 unsigned int i;
1257
1258 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1259 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1260
1261 for (i = 0; i < event_set->count; i++) {
1262 pollfds[i].fd = ((int *) event_set->handles)[i];
1263 pollfds[i].events = 0;
1264 pollfds[i].revents = 0;
1265 if (event_set->masks[i] & SP_EVENT_RX_READY)
1266 pollfds[i].events |= POLLIN;
1267 if (event_set->masks[i] & SP_EVENT_TX_READY)
1268 pollfds[i].events |= POLLOUT;
1269 if (event_set->masks[i] & SP_EVENT_ERROR)
1270 pollfds[i].events |= POLLERR;
1271 }
1272
1273 if (timeout) {
1274 /* Get time at start of operation. */
1275 gettimeofday(&start, NULL);
1276 /* Define duration of timeout. */
1277 delta.tv_sec = timeout / 1000;
1278 delta.tv_usec = (timeout % 1000) * 1000;
1279 /* Calculate time at which we should give up. */
1280 timeradd(&start, &delta, &end);
1281 }
1282
1283 /* Loop until an event occurs. */
dc422c04 1284 while (1) {
6f1186aa
ML		 1285 if (timeout) {
1286 gettimeofday(&now, NULL);
1287 if (timercmp(&now, &end, >)) {
dc422c04 1288 DEBUG("Wait timed out");
6f1186aa
ML		 1289 break;
1290 }
1291 timersub(&end, &now, &delta);
1292 timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000;
1293 }
1294
1295 result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1);
1296
1297 if (result < 0) {
1298 if (errno == EINTR) {
1299 DEBUG("poll() call was interrupted, repeating");
1300 continue;
1301 } else {
1302 free(pollfds);
1303 RETURN_FAIL("poll() failed");
1304 }
1305 } else if (result == 0) {
1306 DEBUG("poll() timed out");
1307 break;
1308 } else {
1309 DEBUG("poll() completed");
1310 break;
1311 }
1312 }
1313
1314 free(pollfds);
1315 RETURN_OK();
1316#endif
1317}
1318
5cea279a 1319#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1320static enum sp_return get_baudrate(int fd, int *baudrate)
1321{
1322 void *data;
1323
c33efc48
ML		 1324 TRACE("%d, %p", fd, baudrate);
1325
ea667be7
ML		 1326 DEBUG("Getting baud rate");
1327
7a6d2196 1328 if (!(data = malloc(get_termios_size())))
c33efc48 1329 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1330
8d43110a
ML		 1331 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1332 free(data);
dc422c04 1333 RETURN_FAIL("Getting termios failed");
8d43110a 1334 }
7a6d2196
ML		 1335
1336 *baudrate = get_termios_speed(data);
1337
8d43110a
ML		 1338 free(data);
1339
c33efc48 1340 RETURN_OK();
7a6d2196
ML		 1341}
1342
1343static enum sp_return set_baudrate(int fd, int baudrate)
1344{
1345 void *data;
1346
c33efc48
ML		 1347 TRACE("%d, %d", fd, baudrate);
1348
ea667be7
ML		 1349 DEBUG("Getting baud rate");
1350
7a6d2196 1351 if (!(data = malloc(get_termios_size())))
c33efc48 1352 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1353
8d43110a
ML		 1354 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1355 free(data);
dc422c04 1356 RETURN_FAIL("Getting termios failed");
8d43110a 1357 }
7a6d2196 1358
ea667be7
ML		 1359 DEBUG("Setting baud rate");
1360
7a6d2196
ML		 1361 set_termios_speed(data, baudrate);
1362
8d43110a
ML		 1363 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1364 free(data);
dc422c04 1365 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1366 }
1367
1368 free(data);
7a6d2196 1369
c33efc48 1370 RETURN_OK();
7a6d2196 1371}
5cea279a 1372#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1373
1374#ifdef USE_TERMIOX
bd791fe1 1375static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1376{
bd791fe1 1377 void *termx;
40978c2b 1378
bd791fe1 1379 TRACE("%d, %p", fd, data);
c33efc48 1380
ea667be7
ML		 1381 DEBUG("Getting advanced flow control");
1382
bd791fe1 1383 if (!(termx = malloc(get_termiox_size())))
c33efc48 1384 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1385
bd791fe1
ML		 1386 if (ioctl(fd, TCGETX, termx) < 0) {
1387 free(termx);
dc422c04 1388 RETURN_FAIL("Getting termiox failed");
8d43110a 1389 }
40978c2b 1390
bd791fe1
ML		 1391 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1392 &data->dtr_flow, &data->dsr_flow);
40978c2b 1393
bd791fe1 1394 free(termx);
8d43110a 1395
c33efc48 1396 RETURN_OK();
40978c2b
ML		 1397}
1398
bd791fe1 1399static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1400{
bd791fe1 1401 void *termx;
40978c2b 1402
bd791fe1 1403 TRACE("%d, %p", fd, data);
c33efc48 1404
ea667be7
ML		 1405 DEBUG("Getting advanced flow control");
1406
bd791fe1 1407 if (!(termx = malloc(get_termiox_size())))
c33efc48 1408 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1409
bd791fe1
ML		 1410 if (ioctl(fd, TCGETX, termx) < 0) {
1411 free(termx);
dc422c04 1412 RETURN_FAIL("Getting termiox failed");
8d43110a 1413 }
40978c2b 1414
ea667be7
ML		 1415 DEBUG("Setting advanced flow control");
1416
bd791fe1
ML		 1417 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1418 data->dtr_flow, data->dsr_flow);
40978c2b 1419
bd791fe1
ML		 1420 if (ioctl(fd, TCSETX, termx) < 0) {
1421 free(termx);
dc422c04 1422 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1423 }
1424
bd791fe1 1425 free(termx);
40978c2b 1426
c33efc48 1427 RETURN_OK();
40978c2b
ML		 1428}
1429#endif /* USE_TERMIOX */
7a6d2196 1430
eb6ed20f
ML		 1431static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1432 struct sp_port_config *config)
8094e4a0 1433{
da2748bf 1434 unsigned int i;
cbf628c7 1435
c33efc48
ML		 1436 TRACE("%p, %p, %p", port, data, config);
1437
7890cef6 1438 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1439
8094e4a0 1440#ifdef _WIN32
e33ab9aa 1441 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1442 RETURN_FAIL("GetCommState() failed");
8094e4a0 1443
067417af 1444 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1445 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1446 config->baudrate = std_baudrates[i].value;
1447 break;
1448 }
1449 }
1450
1451 if (i == NUM_STD_BAUDRATES)
1452 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1453 config->baudrate = data->dcb.BaudRate;
067417af 1454
e33ab9aa 1455 config->bits = data->dcb.ByteSize;
067417af 1456
e33ab9aa
ML		 1457 if (data->dcb.fParity)
1458 switch (data->dcb.Parity) {
067417af
ML		 1459 case NOPARITY:
1460 config->parity = SP_PARITY_NONE;
1461 break;
e432ce60
ML		 1462 case ODDPARITY:
1463 config->parity = SP_PARITY_ODD;
1464 break;
067417af
ML		 1465 case EVENPARITY:
1466 config->parity = SP_PARITY_EVEN;
1467 break;
e432ce60
ML		 1468 case MARKPARITY:
1469 config->parity = SP_PARITY_MARK;
1470 break;
1471 case SPACEPARITY:
1472 config->parity = SP_PARITY_SPACE;
067417af
ML		 1473 break;
1474 default:
1475 config->parity = -1;
1476 }
1477 else
1478 config->parity = SP_PARITY_NONE;
1479
e33ab9aa 1480 switch (data->dcb.StopBits) {
067417af
ML		 1481 case ONESTOPBIT:
1482 config->stopbits = 1;
1483 break;
1484 case TWOSTOPBITS:
1485 config->stopbits = 2;
1486 break;
1487 default:
1488 config->stopbits = -1;
1489 }
1490
e33ab9aa 1491 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1492 case RTS_CONTROL_DISABLE:
1493 config->rts = SP_RTS_OFF;
1494 break;
1495 case RTS_CONTROL_ENABLE:
1496 config->rts = SP_RTS_ON;
1497 break;
1498 case RTS_CONTROL_HANDSHAKE:
1499 config->rts = SP_RTS_FLOW_CONTROL;
1500 break;
1501 default:
1502 config->rts = -1;
067417af
ML		 1503 }
1504
e33ab9aa 1505 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1506
e33ab9aa 1507 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1508 case DTR_CONTROL_DISABLE:
1509 config->dtr = SP_DTR_OFF;
1510 break;
1511 case DTR_CONTROL_ENABLE:
1512 config->dtr = SP_DTR_ON;
1513 break;
1514 case DTR_CONTROL_HANDSHAKE:
1515 config->dtr = SP_DTR_FLOW_CONTROL;
1516 break;
1517 default:
1518 config->dtr = -1;
067417af
ML		 1519 }
1520
e33ab9aa
ML		 1521 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1522
c6754b45
ML		 1523 if (data->dcb.fInX) {
1524 if (data->dcb.fOutX)
1525 config->xon_xoff = SP_XONXOFF_INOUT;
1526 else
1527 config->xon_xoff = SP_XONXOFF_IN;
1528 } else {
1529 if (data->dcb.fOutX)
1530 config->xon_xoff = SP_XONXOFF_OUT;
1531 else
1532 config->xon_xoff = SP_XONXOFF_DISABLED;
1533 }
1534
e33ab9aa
ML		 1535#else // !_WIN32
1536
1537 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1538 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1539
1540 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1541 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1542
1543#ifdef USE_TERMIOX
bd791fe1 1544 int ret = get_flow(port->fd, data);
68ec29db
ML		 1545
1546 if (ret == SP_ERR_FAIL && errno == EINVAL)
1547 data->termiox_supported = 0;
1548 else if (ret < 0)
c33efc48 1549 RETURN_CODEVAL(ret);
68ec29db
ML		 1550 else
1551 data->termiox_supported = 1;
1552#else
1553 data->termiox_supported = 0;
40978c2b
ML		 1554#endif
1555
067417af 1556 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1557 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1558 config->baudrate = std_baudrates[i].value;
1559 break;
1560 }
1561 }
1562
31b3a8f5
MH		 1563 if (i == NUM_STD_BAUDRATES) {
1564#ifdef __APPLE__
1565 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1566#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1567 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1568#else
067417af 1569 config->baudrate = -1;
31b3a8f5
MH		 1570#endif
1571 }
067417af 1572
e33ab9aa 1573 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1574 case CS8:
1575 config->bits = 8;
1576 break;
1577 case CS7:
1578 config->bits = 7;
1579 break;
1580 case CS6:
1581 config->bits = 6;
1582 break;
1583 case CS5:
1584 config->bits = 5;
1585 break;
1586 default:
1587 config->bits = -1;
1588 }
1589
e33ab9aa 1590 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1591 config->parity = SP_PARITY_NONE;
e33ab9aa 1592 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1593 config->parity = -1;
c3e05092 1594#ifdef CMSPAR
e432ce60
ML		 1595 else if (data->term.c_cflag & CMSPAR)
1596 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1597#endif
067417af 1598 else
e33ab9aa 1599 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1600
e33ab9aa 1601 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1602
e33ab9aa 1603 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1604 config->rts = SP_RTS_FLOW_CONTROL;
1605 config->cts = SP_CTS_FLOW_CONTROL;
1606 } else {
bd791fe1 1607 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1608 config->rts = SP_RTS_FLOW_CONTROL;
1609 else
1610 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1611
bd791fe1 1612 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1613 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1614 }
1615
bd791fe1 1616 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1617 config->dtr = SP_DTR_FLOW_CONTROL;
1618 else
1619 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1620
bd791fe1 1621 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1622 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1623
e29b93a5
ML		 1624 if (data->term.c_iflag & IXOFF) {
1625 if (data->term.c_iflag & IXON)
1626 config->xon_xoff = SP_XONXOFF_INOUT;
1627 else
1628 config->xon_xoff = SP_XONXOFF_IN;
1629 } else {
1630 if (data->term.c_iflag & IXON)
1631 config->xon_xoff = SP_XONXOFF_OUT;
1632 else
1633 config->xon_xoff = SP_XONXOFF_DISABLED;
1634 }
067417af
ML		 1635#endif
1636
c33efc48 1637 RETURN_OK();
067417af
ML		 1638}
1639
7a6d2196 1640static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1641 const struct sp_port_config *config)
18fc2dd1 1642{
e33ab9aa 1643 unsigned int i;
31b3a8f5
MH		 1644#ifdef __APPLE__
1645 BAUD_TYPE baud_nonstd;
1646
1647 baud_nonstd = B0;
1648#endif
5cea279a 1649#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1650 int baud_nonstd = 0;
1651#endif
18fc2dd1 1652
c33efc48
ML		 1653 TRACE("%p, %p, %p", port, data, config);
1654
7890cef6 1655 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1656
e33ab9aa 1657#ifdef _WIN32
eac329d2 1658 if (config->baudrate >= 0) {
e33ab9aa
ML		 1659 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1660 if (config->baudrate == std_baudrates[i].value) {
1661 data->dcb.BaudRate = std_baudrates[i].index;
1662 break;
1663 }
1664 }
18fc2dd1 1665
e33ab9aa
ML		 1666 if (i == NUM_STD_BAUDRATES)
1667 data->dcb.BaudRate = config->baudrate;
1668 }
18fc2dd1 1669
e33ab9aa
ML		 1670 if (config->bits >= 0)
1671 data->dcb.ByteSize = config->bits;
1672
1673 if (config->parity >= 0) {
1674 switch (config->parity) {
e33ab9aa
ML		 1675 case SP_PARITY_NONE:
1676 data->dcb.Parity = NOPARITY;
1677 break;
e432ce60
ML		 1678 case SP_PARITY_ODD:
1679 data->dcb.Parity = ODDPARITY;
1680 break;
e33ab9aa
ML		 1681 case SP_PARITY_EVEN:
1682 data->dcb.Parity = EVENPARITY;
1683 break;
e432ce60
ML		 1684 case SP_PARITY_MARK:
1685 data->dcb.Parity = MARKPARITY;
1686 break;
1687 case SP_PARITY_SPACE:
1688 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1689 break;
1690 default:
c33efc48 1691 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1692 }
18fc2dd1
ML		 1693 }
1694
e33ab9aa
ML		 1695 if (config->stopbits >= 0) {
1696 switch (config->stopbits) {
1697 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1698 case 1:
1699 data->dcb.StopBits = ONESTOPBIT;
1700 break;
1701 case 2:
1702 data->dcb.StopBits = TWOSTOPBITS;
1703 break;
1704 default:
c33efc48 1705 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1706 }
1707 }
1708
1709 if (config->rts >= 0) {
1710 switch (config->rts) {
1711 case SP_RTS_OFF:
1712 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1713 break;
1714 case SP_RTS_ON:
1715 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1716 break;
1717 case SP_RTS_FLOW_CONTROL:
1718 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1719 break;
1720 default:
c33efc48 1721 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1722 }
1723 }
1724
1725 if (config->cts >= 0) {
1726 switch (config->cts) {
1727 case SP_CTS_IGNORE:
1728 data->dcb.fOutxCtsFlow = FALSE;
1729 break;
1730 case SP_CTS_FLOW_CONTROL:
1731 data->dcb.fOutxCtsFlow = TRUE;
1732 break;
1733 default:
c33efc48 1734 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1735 }
1736 }
1737
1738 if (config->dtr >= 0) {
1739 switch (config->dtr) {
1740 case SP_DTR_OFF:
1741 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1742 break;
1743 case SP_DTR_ON:
1744 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1745 break;
1746 case SP_DTR_FLOW_CONTROL:
1747 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1748 break;
1749 default:
c33efc48 1750 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1751 }
1752 }
1753
1754 if (config->dsr >= 0) {
1755 switch (config->dsr) {
1756 case SP_DSR_IGNORE:
1757 data->dcb.fOutxDsrFlow = FALSE;
1758 break;
1759 case SP_DSR_FLOW_CONTROL:
1760 data->dcb.fOutxDsrFlow = TRUE;
1761 break;
1762 default:
c33efc48 1763 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1764 }
18fc2dd1
ML		 1765 }
1766
e33ab9aa
ML		 1767 if (config->xon_xoff >= 0) {
1768 switch (config->xon_xoff) {
1769 case SP_XONXOFF_DISABLED:
1770 data->dcb.fInX = FALSE;
1771 data->dcb.fOutX = FALSE;
1772 break;
1773 case SP_XONXOFF_IN:
1774 data->dcb.fInX = TRUE;
1775 data->dcb.fOutX = FALSE;
1776 break;
1777 case SP_XONXOFF_OUT:
1778 data->dcb.fInX = FALSE;
1779 data->dcb.fOutX = TRUE;
1780 break;
1781 case SP_XONXOFF_INOUT:
1782 data->dcb.fInX = TRUE;
1783 data->dcb.fOutX = TRUE;
1784 break;
1785 default:
c33efc48 1786 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1787 }
1788 }
1789
1790 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1791 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1792
31b3a8f5 1793#else /* !_WIN32 */
e33ab9aa 1794
7a6d2196
ML		 1795 int controlbits;
1796
eac329d2 1797 if (config->baudrate >= 0) {
e33ab9aa
ML		 1798 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1799 if (config->baudrate == std_baudrates[i].value) {
1800 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1801 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1802
1803 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1804 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1805 break;
1806 }
1807 }
1808
31b3a8f5
MH		 1809 /* Non-standard baud rate */
1810 if (i == NUM_STD_BAUDRATES) {
1811#ifdef __APPLE__
24abdb68 1812 /* Set "dummy" baud rate. */
31b3a8f5 1813 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1814 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1815 baud_nonstd = config->baudrate;
5cea279a 1816#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1817 baud_nonstd = 1;
31b3a8f5 1818#else
c33efc48 1819 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1820#endif
1821 }
e33ab9aa
ML		 1822 }
1823
1824 if (config->bits >= 0) {
1825 data->term.c_cflag &= ~CSIZE;
1826 switch (config->bits) {
1827 case 8:
1828 data->term.c_cflag |= CS8;
1829 break;
1830 case 7:
1831 data->term.c_cflag |= CS7;
1832 break;
1833 case 6:
1834 data->term.c_cflag |= CS6;
1835 break;
23922313
UH		 1836 case 5:
1837 data->term.c_cflag |= CS5;
1838 break;
e33ab9aa 1839 default:
c33efc48 1840 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1841 }
1842 }
1843
1844 if (config->parity >= 0) {
1845 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1846 data->term.c_cflag &= ~(PARENB | PARODD);
1847#ifdef CMSPAR
1848 data->term.c_cflag &= ~CMSPAR;
1849#endif
e33ab9aa
ML		 1850 switch (config->parity) {
1851 case SP_PARITY_NONE:
1852 data->term.c_iflag |= IGNPAR;
1853 break;
1854 case SP_PARITY_EVEN:
1855 data->term.c_cflag |= PARENB;
1856 break;
1857 case SP_PARITY_ODD:
1858 data->term.c_cflag |= PARENB | PARODD;
1859 break;
afb518f0 1860#ifdef CMSPAR
e432ce60 1861 case SP_PARITY_MARK:
c3e05092 1862 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1863 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1864 break;
1865 case SP_PARITY_SPACE:
c3e05092 1866 data->term.c_cflag |= PARENB;
c3e05092 1867 data->term.c_cflag |= CMSPAR;
e432ce60 1868 break;
afb518f0
ML		 1869#else
1870 case SP_PARITY_MARK:
1871 case SP_PARITY_SPACE:
1872 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1873#endif
e33ab9aa 1874 default:
c33efc48 1875 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1876 }
1877 }
1878
1879 if (config->stopbits >= 0) {
1880 data->term.c_cflag &= ~CSTOPB;
1881 switch (config->stopbits) {
1882 case 1:
1883 data->term.c_cflag &= ~CSTOPB;
1884 break;
1885 case 2:
1886 data->term.c_cflag |= CSTOPB;
1887 break;
1888 default:
c33efc48 1889 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1890 }
1891 }
1892
eac329d2 1893 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1894 if (data->termiox_supported) {
bd791fe1 1895 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1896 switch (config->rts) {
1897 case SP_RTS_OFF:
1898 case SP_RTS_ON:
1899 controlbits = TIOCM_RTS;
1900 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1901 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1902 break;
1903 case SP_RTS_FLOW_CONTROL:
bd791fe1 1904 data->rts_flow = 1;
68ec29db
ML		 1905 break;
1906 default:
1907 break;
e33ab9aa 1908 }
68ec29db 1909 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1910 data->cts_flow = 1;
e33ab9aa 1911
bd791fe1 1912 if (data->rts_flow && data->cts_flow)
e33ab9aa 1913 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1914 else
1915 data->term.c_iflag &= ~CRTSCTS;
1916 } else {
1917 /* Asymmetric use of RTS/CTS not supported. */
1918 if (data->term.c_iflag & CRTSCTS) {
1919 /* Flow control can only be disabled for both RTS & CTS together. */
1920 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1921 if (config->cts != SP_CTS_IGNORE)
c33efc48 1922 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1923 }
1924 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1925 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1926 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1927 }
e33ab9aa 1928 } else {
68ec29db
ML		 1929 /* Flow control can only be enabled for both RTS & CTS together. */
1930 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1931 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1932 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1933 }
1934
1935 if (config->rts >= 0) {
1936 if (config->rts == SP_RTS_FLOW_CONTROL) {
1937 data->term.c_iflag |= CRTSCTS;
1938 } else {
1939 controlbits = TIOCM_RTS;
1940 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1941 &controlbits) < 0)
c33efc48 1942 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1943 }
e33ab9aa
ML		 1944 }
1945 }
1946 }
1947
eac329d2 1948 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1949 if (data->termiox_supported) {
bd791fe1 1950 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1951 switch (config->dtr) {
1952 case SP_DTR_OFF:
1953 case SP_DTR_ON:
1954 controlbits = TIOCM_DTR;
1955 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1956 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1957 break;
1958 case SP_DTR_FLOW_CONTROL:
bd791fe1 1959 data->dtr_flow = 1;
68ec29db
ML		 1960 break;
1961 default:
1962 break;
1963 }
1964 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 1965 data->dsr_flow = 1;
68ec29db
ML		 1966 } else {
1967 /* DTR/DSR flow control not supported. */
1968 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 1969 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 1970
68ec29db
ML		 1971 if (config->dtr >= 0) {
1972 controlbits = TIOCM_DTR;
1973 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
1974 &controlbits) < 0)
c33efc48 1975 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 1976 }
e33ab9aa
ML		 1977 }
1978 }
1979
1980 if (config->xon_xoff >= 0) {
1981 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
1982 switch (config->xon_xoff) {
1983 case SP_XONXOFF_DISABLED:
1984 break;
1985 case SP_XONXOFF_IN:
1986 data->term.c_iflag |= IXOFF;
1987 break;
1988 case SP_XONXOFF_OUT:
1989 data->term.c_iflag |= IXON | IXANY;
1990 break;
1991 case SP_XONXOFF_INOUT:
1992 data->term.c_iflag |= IXON | IXOFF | IXANY;
1993 break;
1994 default:
c33efc48 1995 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1996 }
1997 }
1998
3f5c06d0 1999 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2000 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2001
2002#ifdef __APPLE__
2003 if (baud_nonstd != B0) {
2004 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2005 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2006 /*
2007 * Set baud rates in data->term to correct, but incompatible
2008 * with tcsetattr() value, same as delivered by tcgetattr().
2009 */
31b3a8f5 2010 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2011 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2012 }
7a6d2196 2013#elif defined(__linux__)
5cea279a 2014#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2015 if (baud_nonstd)
2016 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2017#endif
40978c2b 2018#ifdef USE_TERMIOX
68ec29db 2019 if (data->termiox_supported)
bd791fe1 2020 TRY(set_flow(port->fd, data));
40978c2b 2021#endif
7a6d2196 2022#endif
31b3a8f5
MH		 2023
2024#endif /* !_WIN32 */
e33ab9aa 2025
c33efc48 2026 RETURN_OK();
e33ab9aa
ML		 2027}
2028
970f279a 2029SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2030{
59131d60 2031 struct sp_port_config *config;
9b1502ef 2032
00d8c56d
UH		 2033 TRACE("%p", config_ptr);
2034
9b1502ef
ML		 2035 if (!config_ptr)
2036 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2037
59131d60
ML		 2038 *config_ptr = NULL;
2039
2040 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2041 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2042
59131d60
ML		 2043 config->baudrate = -1;
2044 config->bits = -1;
2045 config->parity = -1;
2046 config->stopbits = -1;
2047 config->rts = -1;
2048 config->cts = -1;
2049 config->dtr = -1;
2050 config->dsr = -1;
2051
2052 *config_ptr = config;
2053
9b1502ef
ML		 2054 RETURN_OK();
2055}
2056
970f279a 2057SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2058{
2059 TRACE("%p", config);
2060
2061 if (!config)
2062 DEBUG("Null config");
2063 else
2064 free(config);
2065
2066 RETURN();
2067}
2068
970f279a
AJ		 2069SP_API enum sp_return sp_get_config(struct sp_port *port,
2070 struct sp_port_config *config)
70cd37de
ML		 2071{
2072 struct port_data data;
2073
2074 TRACE("%p, %p", port, config);
2075
2076 CHECK_OPEN_PORT();
2077
2078 if (!config)
9b1502ef 2079 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2080
2081 TRY(get_config(port, &data, config));
2082
2083 RETURN_OK();
2084}
2085
970f279a
AJ		 2086SP_API enum sp_return sp_set_config(struct sp_port *port,
2087 const struct sp_port_config *config)
e33ab9aa 2088{
8f189c4c 2089 struct port_data data;
e33ab9aa
ML		 2090 struct sp_port_config prev_config;
2091
c33efc48
ML		 2092 TRACE("%p, %p", port, config);
2093
dec10e31 2094 CHECK_OPEN_PORT();
823690ae
ML		 2095
2096 if (!config)
c33efc48 2097 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2098
e33ab9aa
ML		 2099 TRY(get_config(port, &data, &prev_config));
2100 TRY(set_config(port, &data, config));
74510d4b 2101
c33efc48 2102 RETURN_OK();
74510d4b
ML		 2103}
2104
9b1502ef 2105#define CREATE_ACCESSORS(x, type) \
970f279a 2106SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2107 struct port_data data; \
e33ab9aa 2108 struct sp_port_config config; \
c33efc48 2109 TRACE("%p, %d", port, x); \
dec10e31 2110 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2111 TRY(get_config(port, &data, &config)); \
2112 config.x = x; \
2113 TRY(set_config(port, &data, &config)); \
c33efc48 2114 RETURN_OK(); \
9b1502ef 2115} \
970f279a
AJ		 2116SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2117 type *x) { \
00d8c56d 2118 TRACE("%p, %p", config, x); \
9b1502ef
ML		 2119 if (!config) \
2120 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2121 *x = config->x; \
2122 RETURN_OK(); \
2123} \
970f279a
AJ		 2124SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2125 type x) { \
9b1502ef
ML		 2126 TRACE("%p, %d", config, x); \
2127 if (!config) \
2128 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2129 config->x = x; \
2130 RETURN_OK(); \
9069c2fb
ML		 2131}
2132
9b1502ef
ML		 2133CREATE_ACCESSORS(baudrate, int)
2134CREATE_ACCESSORS(bits, int)
2135CREATE_ACCESSORS(parity, enum sp_parity)
2136CREATE_ACCESSORS(stopbits, int)
2137CREATE_ACCESSORS(rts, enum sp_rts)
2138CREATE_ACCESSORS(cts, enum sp_cts)
2139CREATE_ACCESSORS(dtr, enum sp_dtr)
2140CREATE_ACCESSORS(dsr, enum sp_dsr)
2141CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2142
970f279a
AJ		 2143SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2144 enum sp_flowcontrol flowcontrol)
e33ab9aa 2145{
9b1502ef
ML		 2146 if (!config)
2147 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2148
2149 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2150 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2151
e33ab9aa 2152 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2153 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2154 else
9b1502ef 2155 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2156
2157 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2158 config->rts = SP_RTS_FLOW_CONTROL;
2159 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2160 } else {
9b1502ef
ML		 2161 if (config->rts == SP_RTS_FLOW_CONTROL)
2162 config->rts = SP_RTS_ON;
2163 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2164 }
2165
2166 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2167 config->dtr = SP_DTR_FLOW_CONTROL;
2168 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2169 } else {
9b1502ef
ML		 2170 if (config->dtr == SP_DTR_FLOW_CONTROL)
2171 config->dtr = SP_DTR_ON;
2172 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2173 }
2174
9b1502ef
ML		 2175 RETURN_OK();
2176}
2177
970f279a
AJ		 2178SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2179 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2180{
2181 struct port_data data;
2182 struct sp_port_config config;
2183
2184 TRACE("%p, %d", port, flowcontrol);
2185
2186 CHECK_OPEN_PORT();
2187
2188 TRY(get_config(port, &data, &config));
2189
2190 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2191
e33ab9aa
ML		 2192 TRY(set_config(port, &data, &config));
2193
c33efc48 2194 RETURN_OK();
e33ab9aa
ML		 2195}
2196
970f279a
AJ		 2197SP_API enum sp_return sp_get_signals(struct sp_port *port,
2198 enum sp_signal *signals)
8cf7c697 2199{
c33efc48
ML		 2200 TRACE("%p, %p", port, signals);
2201
dec10e31 2202 CHECK_OPEN_PORT();
8cf7c697
ML		 2203
2204 if (!signals)
c33efc48 2205 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2206
7890cef6 2207 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2208
8cf7c697
ML		 2209 *signals = 0;
2210#ifdef _WIN32
2211 DWORD bits;
2212 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2213 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2214 if (bits & MS_CTS_ON)
2215 *signals |= SP_SIG_CTS;
2216 if (bits & MS_DSR_ON)
2217 *signals |= SP_SIG_DSR;
8cf7c697 2218 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2219 *signals |= SP_SIG_DCD;
2220 if (bits & MS_RING_ON)
8cf7c697
ML		 2221 *signals |= SP_SIG_RI;
2222#else
2223 int bits;
2224 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2225 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2226 if (bits & TIOCM_CTS)
2227 *signals |= SP_SIG_CTS;
2228 if (bits & TIOCM_DSR)
2229 *signals |= SP_SIG_DSR;
2230 if (bits & TIOCM_CAR)
2231 *signals |= SP_SIG_DCD;
2232 if (bits & TIOCM_RNG)
2233 *signals |= SP_SIG_RI;
2234#endif
c33efc48 2235 RETURN_OK();
8cf7c697
ML		 2236}
2237
970f279a 2238SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2239{
c33efc48
ML		 2240 TRACE("%p", port);
2241
dec10e31 2242 CHECK_OPEN_PORT();
90cc3ee6
ML		 2243#ifdef _WIN32
2244 if (SetCommBreak(port->hdl) == 0)
c33efc48 2245 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2246#else
2247 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2248 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2249#endif
2250
c33efc48 2251 RETURN_OK();
90cc3ee6
ML		 2252}
2253
970f279a 2254SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2255{
c33efc48
ML		 2256 TRACE("%p", port);
2257
dec10e31 2258 CHECK_OPEN_PORT();
90cc3ee6
ML		 2259#ifdef _WIN32
2260 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2261 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2262#else
2263 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2264 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2265#endif
2266
c33efc48 2267 RETURN_OK();
90cc3ee6
ML		 2268}
2269
970f279a 2270SP_API int sp_last_error_code(void)
74510d4b 2271{
7890cef6 2272 TRACE_VOID();
74510d4b 2273#ifdef _WIN32
9caa2e86 2274 RETURN_INT(GetLastError());
74510d4b 2275#else
9caa2e86 2276 RETURN_INT(errno);
74510d4b
ML		 2277#endif
2278}
2279
970f279a 2280SP_API char *sp_last_error_message(void)
74510d4b 2281{
7890cef6 2282 TRACE_VOID();
c33efc48 2283
74510d4b
ML		 2284#ifdef _WIN32
2285 LPVOID message;
2286 DWORD error = GetLastError();
2287
2288 FormatMessage(
2289 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2290 FORMAT_MESSAGE_FROM_SYSTEM |
2291 FORMAT_MESSAGE_IGNORE_INSERTS,
2292 NULL,
2293 error,
2294 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2295 (LPTSTR) &message,
2296 0, NULL );
2297
9caa2e86 2298 RETURN_STRING(message);
74510d4b 2299#else
9caa2e86 2300 RETURN_STRING(strerror(errno));
74510d4b
ML		 2301#endif
2302}
2303
970f279a 2304SP_API void sp_free_error_message(char *message)
74510d4b 2305{
c33efc48
ML		 2306 TRACE("%s", message);
2307
74510d4b
ML		 2308#ifdef _WIN32
2309 LocalFree(message);
64eec30d
ML		 2310#else
2311 (void)message;
74510d4b 2312#endif
c33efc48
ML		 2313
2314 RETURN();
74510d4b 2315}
863b35e6 2316
970f279a 2317SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2318{
c33efc48
ML		 2319 TRACE("%p", handler);
2320
863b35e6 2321 sp_debug_handler = handler;
c33efc48
ML		 2322
2323 RETURN();
863b35e6
ML		 2324}
2325
970f279a 2326SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2327{
2328 va_list args;
2329 va_start(args, format);
2330 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2331 fputs("sp: ", stderr);
863b35e6
ML		 2332 vfprintf(stderr, format, args);
2333 }
2334 va_end(args);
2335}
524b0e14 2336
970f279a 2337SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2338{
2339 return SP_PACKAGE_VERSION_MAJOR;
2340}
2341
970f279a 2342SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2343{
2344 return SP_PACKAGE_VERSION_MINOR;
2345}
2346
970f279a 2347SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2348{
2349 return SP_PACKAGE_VERSION_MICRO;
2350}
2351
970f279a 2352SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2353{
2354 return SP_PACKAGE_VERSION_STRING;
2355}
2356
970f279a 2357SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2358{
2359 return SP_LIB_VERSION_CURRENT;
2360}
2361
970f279a 2362SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2363{
2364 return SP_LIB_VERSION_REVISION;
2365}
2366
970f279a 2367SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2368{
2369 return SP_LIB_VERSION_AGE;
2370}
2371
970f279a 2372SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2373{
2374 return SP_LIB_VERSION_STRING;
2375}
2376
2377/** @} */
Serial port access library