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Constify the sp_get_port_transport() parameter.
[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>
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
ad036cc8 139SP_API enum sp_transport sp_get_port_transport(const 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{
23e7fa37 325#ifndef NO_ENUMERATION
d54e9004 326 struct sp_port **list;
48a4076f 327 int ret;
23e7fa37 328#endif
24c1a4bb 329
c33efc48
ML		 330 TRACE("%p", list_ptr);
331
dec10e31
ML		 332 if (!list_ptr)
333 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
334
8d12e620
ML		 335#ifdef NO_ENUMERATION
336 RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
337#else
ea667be7
ML		 338 DEBUG("Enumerating ports");
339
8d12e620 340 if (!(list = malloc(sizeof(struct sp_port *))))
c33efc48 341 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 342
343 list[0] = NULL;
3b63f34d 344
48a4076f 345 ret = list_ports(&list);
77f262c4 346
8d12e620 347 if (ret == SP_OK) {
77f262c4 348 *list_ptr = list;
8d12e620
ML		 349 } else {
350 sp_free_port_list(list);
77f262c4
ML		 351 *list_ptr = NULL;
352 }
8d12e620
ML		 353
354 RETURN_CODEVAL(ret);
355#endif
3b63f34d
ML		 356}
357
970f279a 358SP_API void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 359{
360 unsigned int i;
f92f1f0c 361
c33efc48
ML		 362 TRACE("%p", list);
363
dec10e31
ML		 364 if (!list) {
365 DEBUG("Null list");
366 RETURN();
367 }
368
ea667be7
ML		 369 DEBUG("Freeing port list");
370
3b63f34d 371 for (i = 0; list[i]; i++)
e3b2f7a4 372 sp_free_port(list[i]);
3b63f34d 373 free(list);
c33efc48
ML		 374
375 RETURN();
3b63f34d
ML		 376}
377
c33efc48 378#define CHECK_PORT() do { \
dc422c04 379 if (!port) \
c33efc48 380 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dc422c04 381 if (!port->name) \
dec10e31
ML		 382 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
383} while (0)
384#ifdef _WIN32
385#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 386 if (port->hdl == INVALID_HANDLE_VALUE) \
387 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 388} while (0)
74510d4b 389#else
dec10e31 390#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 391 if (port->fd < 0) \
392 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 393} while (0)
74510d4b 394#endif
dec10e31
ML		 395#define CHECK_OPEN_PORT() do { \
396 CHECK_PORT(); \
397 CHECK_PORT_HANDLE(); \
398} while (0)
74510d4b 399
47fcf8ec
ML		 400#ifdef WIN32
401/** To be called after port receive buffer is emptied. */
402static enum sp_return restart_wait(struct sp_port *port)
403{
404 DWORD wait_result;
405
406 if (port->wait_running) {
407 /* Check status of running wait operation. */
408 if (GetOverlappedResult(port->hdl, &port->wait_ovl,
409 &wait_result, FALSE)) {
410 DEBUG("Previous wait completed");
411 port->wait_running = FALSE;
412 } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
413 DEBUG("Previous wait still running");
414 RETURN_OK();
415 } else {
416 RETURN_FAIL("GetOverlappedResult() failed");
417 }
418 }
419
420 if (!port->wait_running) {
421 /* Start new wait operation. */
422 if (WaitCommEvent(port->hdl, &port->events,
423 &port->wait_ovl)) {
424 DEBUG("New wait returned, events already pending");
425 } else if (GetLastError() == ERROR_IO_PENDING) {
426 DEBUG("New wait running in background");
427 port->wait_running = TRUE;
428 } else {
429 RETURN_FAIL("WaitCommEvent() failed");
430 }
431 }
432
433 RETURN_OK();
434}
435#endif
436
970f279a 437SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 438{
bccc7c9f
ML		 439 struct port_data data;
440 struct sp_port_config config;
441 enum sp_return ret;
442
00d8c56d 443 TRACE("%p, 0x%x", port, flags);
c33efc48 444
dec10e31
ML		 445 CHECK_PORT();
446
276ef1b9 447 if (flags > SP_MODE_READ_WRITE)
dec10e31 448 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 449
7890cef6 450 DEBUG_FMT("Opening port %s", port->name);
ea667be7 451
74510d4b 452#ifdef _WIN32
537942c9 453 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 454 char *escaped_port_name;
537942c9 455 COMSTAT status;
99945a1f
ML		 456
457 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 458 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 459 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 460 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
461
74510d4b 462 /* Map 'flags' to the OS-specific settings. */
e3dcf906 463 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 464 if (flags & SP_MODE_READ)
465 desired_access |= GENERIC_READ;
466 if (flags & SP_MODE_WRITE)
74510d4b 467 desired_access |= GENERIC_WRITE;
74510d4b 468
99945a1f 469 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 470 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 471
472 free(escaped_port_name);
473
74510d4b 474 if (port->hdl == INVALID_HANDLE_VALUE)
dc422c04 475 RETURN_FAIL("Port CreateFile() failed");
e3dcf906
ML		 476
477 /* All timeouts initially disabled. */
478 port->timeouts.ReadIntervalTimeout = 0;
479 port->timeouts.ReadTotalTimeoutMultiplier = 0;
480 port->timeouts.ReadTotalTimeoutConstant = 0;
481 port->timeouts.WriteTotalTimeoutMultiplier = 0;
482 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 483
e3dcf906 484 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 485 sp_close(port);
486 RETURN_FAIL("SetCommTimeouts() failed");
487 }
e3dcf906
ML		 488
489 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 490#define INIT_OVERLAPPED(ovl) do { \
491 memset(&port->ovl, 0, sizeof(port->ovl)); \
492 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
493 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
494 == INVALID_HANDLE_VALUE) { \
495 sp_close(port); \
496 RETURN_FAIL(#ovl "CreateEvent() failed"); \
497 } \
498} while (0)
499
500 INIT_OVERLAPPED(read_ovl);
501 INIT_OVERLAPPED(write_ovl);
502 INIT_OVERLAPPED(wait_ovl);
503
504 /* Set event mask for RX and error events. */
505 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 506 sp_close(port);
6f1186aa 507 RETURN_FAIL("SetCommMask() failed");
e3dcf906 508 }
6f1186aa 509
e3dcf906 510 port->writing = FALSE;
47fcf8ec 511 port->wait_running = FALSE;
e3dcf906 512
47fcf8ec
ML		 513 ret = restart_wait(port);
514
515 if (ret < 0) {
516 sp_close(port);
517 RETURN_CODEVAL(ret);
518 }
74510d4b 519#else
e3dcf906 520 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 521
74510d4b 522 /* Map 'flags' to the OS-specific settings. */
276ef1b9 523 if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
74510d4b 524 flags_local |= O_RDWR;
a036341b 525 else if (flags & SP_MODE_READ)
74510d4b 526 flags_local |= O_RDONLY;
a036341b
ML		 527 else if (flags & SP_MODE_WRITE)
528 flags_local |= O_WRONLY;
74510d4b
ML		 529
530 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 531 RETURN_FAIL("open() failed");
bccc7c9f 532#endif
9cb98459 533
e33ab9aa
ML		 534 ret = get_config(port, &data, &config);
535
eac329d2 536 if (ret < 0) {
e33ab9aa 537 sp_close(port);
c33efc48 538 RETURN_CODEVAL(ret);
e33ab9aa 539 }
9cb98459 540
bccc7c9f
ML		 541 /* Set sane port settings. */
542#ifdef _WIN32
543 data.dcb.fBinary = TRUE;
544 data.dcb.fDsrSensitivity = FALSE;
545 data.dcb.fErrorChar = FALSE;
546 data.dcb.fNull = FALSE;
34442106 547 data.dcb.fAbortOnError = FALSE;
bccc7c9f 548#else
b251be4b 549 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 550 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
551#ifdef IUCLC
552 data.term.c_iflag &= ~IUCLC;
553#endif
554 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
555#ifdef OLCUC
556 data.term.c_oflag &= ~OLCUC;
557#endif
558#ifdef NLDLY
559 data.term.c_oflag &= ~NLDLY;
560#endif
561#ifdef CRDLY
562 data.term.c_oflag &= ~CRDLY;
563#endif
564#ifdef TABDLY
565 data.term.c_oflag &= ~TABDLY;
566#endif
567#ifdef BSDLY
568 data.term.c_oflag &= ~BSDLY;
569#endif
570#ifdef VTDLY
571 data.term.c_oflag &= ~VTDLY;
572#endif
573#ifdef FFDLY
574 data.term.c_oflag &= ~FFDLY;
575#endif
b251be4b 576#ifdef OFILL
9cb98459
ML		 577 data.term.c_oflag &= ~OFILL;
578#endif
c3e05092 579 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 580 data.term.c_cc[VMIN] = 0;
b251be4b 581 data.term.c_cc[VTIME] = 0;
9cb98459 582
b251be4b
ML		 583 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
584 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 585#endif
9cb98459 586
537942c9 587#ifdef _WIN32
1a2a1544
UH		 588 if (ClearCommError(port->hdl, &errors, &status) == 0)
589 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 590#endif
591
e33ab9aa
ML		 592 ret = set_config(port, &data, &config);
593
eac329d2 594 if (ret < 0) {
e33ab9aa 595 sp_close(port);
c33efc48 596 RETURN_CODEVAL(ret);
e33ab9aa 597 }
74510d4b 598
c33efc48 599 RETURN_OK();
74510d4b
ML		 600}
601
970f279a 602SP_API enum sp_return sp_close(struct sp_port *port)
74510d4b 603{
c33efc48
ML		 604 TRACE("%p", port);
605
dec10e31 606 CHECK_OPEN_PORT();
74510d4b 607
7890cef6 608 DEBUG_FMT("Closing port %s", port->name);
ea667be7 609
74510d4b
ML		 610#ifdef _WIN32
611 /* Returns non-zero upon success, 0 upon failure. */
612 if (CloseHandle(port->hdl) == 0)
dc422c04 613 RETURN_FAIL("Port CloseHandle() failed");
8f471c66 614 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 615
616 /* Close event handles for overlapped structures. */
617#define CLOSE_OVERLAPPED(ovl) do { \
618 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
619 CloseHandle(port->ovl.hEvent) == 0) \
620 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
621} while (0)
622 CLOSE_OVERLAPPED(read_ovl);
623 CLOSE_OVERLAPPED(write_ovl);
624 CLOSE_OVERLAPPED(wait_ovl);
625
74510d4b
ML		 626#else
627 /* Returns 0 upon success, -1 upon failure. */
628 if (close(port->fd) == -1)
c33efc48 629 RETURN_FAIL("close() failed");
8f471c66 630 port->fd = -1;
74510d4b
ML		 631#endif
632
c33efc48 633 RETURN_OK();
74510d4b
ML		 634}
635
970f279a 636SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 637{
00d8c56d 638 TRACE("%p, 0x%x", port, buffers);
c33efc48 639
dec10e31
ML		 640 CHECK_OPEN_PORT();
641
642 if (buffers > SP_BUF_BOTH)
643 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 644
0ba3e49b 645 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7 646
7890cef6
ML		 647 DEBUG_FMT("Flushing %s buffers on port %s",
648 buffer_names[buffers], port->name);
ea667be7 649
74510d4b 650#ifdef _WIN32
fd8fd11a
ML		 651 DWORD flags = 0;
652 if (buffers & SP_BUF_INPUT)
653 flags |= PURGE_RXCLEAR;
654 if (buffers & SP_BUF_OUTPUT)
655 flags |= PURGE_TXCLEAR;
656
74510d4b 657 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 658 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 659 RETURN_FAIL("PurgeComm() failed");
47fcf8ec
ML		 660
661 if (buffers & SP_BUF_INPUT)
662 TRY(restart_wait(port));
74510d4b 663#else
fd8fd11a 664 int flags = 0;
ad749855 665 if (buffers == SP_BUF_BOTH)
fd8fd11a 666 flags = TCIOFLUSH;
ad749855 667 else if (buffers == SP_BUF_INPUT)
fd8fd11a 668 flags = TCIFLUSH;
ad749855 669 else if (buffers == SP_BUF_OUTPUT)
fd8fd11a
ML		 670 flags = TCOFLUSH;
671
74510d4b 672 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 673 if (tcflush(port->fd, flags) < 0)
c33efc48 674 RETURN_FAIL("tcflush() failed");
74510d4b 675#endif
c33efc48 676 RETURN_OK();
74510d4b
ML		 677}
678
970f279a 679SP_API enum sp_return sp_drain(struct sp_port *port)
69a3739c 680{
c33efc48
ML		 681 TRACE("%p", port);
682
dec10e31 683 CHECK_OPEN_PORT();
69a3739c 684
7890cef6 685 DEBUG_FMT("Draining port %s", port->name);
ea667be7 686
69a3739c
ML		 687#ifdef _WIN32
688 /* Returns non-zero upon success, 0 upon failure. */
689 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 690 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 691 RETURN_OK();
69a3739c 692#else
2c827b21
ML		 693 int result;
694 while (1) {
33fd8804
ML		 695#ifdef __ANDROID__
696 int arg = 1;
697 result = ioctl(port->fd, TCSBRK, &arg);
698#else
2c827b21 699 result = tcdrain(port->fd);
33fd8804 700#endif
2c827b21
ML		 701 if (result < 0) {
702 if (errno == EINTR) {
703 DEBUG("tcdrain() was interrupted");
704 continue;
705 } else {
706 RETURN_FAIL("tcdrain() failed");
707 }
708 } else {
709 RETURN_OK();
710 }
711 }
69a3739c 712#endif
69a3739c
ML		 713}
714
970f279a
AJ		 715SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf,
716 size_t count, unsigned int timeout)
e3dcf906
ML		 717{
718 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
719
720 CHECK_OPEN_PORT();
721
722 if (!buf)
723 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
724
725 if (timeout)
7890cef6
ML		 726 DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms",
727 count, port->name, timeout);
e3dcf906 728 else
7890cef6
ML		 729 DEBUG_FMT("Writing %d bytes to port %s, no timeout",
730 count, port->name);
e3dcf906
ML		 731
732 if (count == 0)
9caa2e86 733 RETURN_INT(0);
e3dcf906
ML		 734
735#ifdef _WIN32
736 DWORD bytes_written = 0;
737 BOOL result;
738
739 /* Wait for previous non-blocking write to complete, if any. */
740 if (port->writing) {
741 DEBUG("Waiting for previous write to complete");
742 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
743 port->writing = 0;
744 if (!result)
745 RETURN_FAIL("Previous write failed to complete");
746 DEBUG("Previous write completed");
747 }
748
749 /* Set timeout. */
750 port->timeouts.WriteTotalTimeoutConstant = timeout;
751 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
752 RETURN_FAIL("SetCommTimeouts() failed");
753
754 /* Start write. */
755 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) {
756 if (GetLastError() == ERROR_IO_PENDING) {
757 DEBUG("Waiting for write to complete");
758 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
7890cef6 759 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
9caa2e86 760 RETURN_INT(bytes_written);
e3dcf906
ML		 761 } else {
762 RETURN_FAIL("WriteFile() failed");
763 }
764 } else {
765 DEBUG("Write completed immediately");
9caa2e86 766 RETURN_INT(count);
e3dcf906
ML		 767 }
768#else
769 size_t bytes_written = 0;
770 unsigned char *ptr = (unsigned char *) buf;
771 struct timeval start, delta, now, end = {0, 0};
772 fd_set fds;
773 int result;
774
775 if (timeout) {
776 /* Get time at start of operation. */
777 gettimeofday(&start, NULL);
778 /* Define duration of timeout. */
779 delta.tv_sec = timeout / 1000;
1b342042 780 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 781 /* Calculate time at which we should give up. */
782 timeradd(&start, &delta, &end);
783 }
784
785 /* Loop until we have written the requested number of bytes. */
dc422c04 786 while (bytes_written < count) {
e3dcf906
ML		 787 /* Wait until space is available. */
788 FD_ZERO(&fds);
789 FD_SET(port->fd, &fds);
790 if (timeout) {
791 gettimeofday(&now, NULL);
792 if (timercmp(&now, &end, >)) {
dc422c04 793 DEBUG("Write timed out");
9caa2e86 794 RETURN_INT(bytes_written);
e3dcf906
ML		 795 }
796 timersub(&end, &now, &delta);
797 }
798 result = select(port->fd + 1, NULL, &fds, NULL, timeout ? &delta : NULL);
63a17c64
ML		 799 if (result < 0) {
800 if (errno == EINTR) {
801 DEBUG("select() call was interrupted, repeating");
802 continue;
803 } else {
804 RETURN_FAIL("select() failed");
805 }
806 } else if (result == 0) {
dc422c04 807 DEBUG("Write timed out");
9caa2e86 808 RETURN_INT(bytes_written);
e3dcf906
ML		 809 }
810
811 /* Do write. */
812 result = write(port->fd, ptr, count - bytes_written);
813
814 if (result < 0) {
815 if (errno == EAGAIN)
816 /* This shouldn't happen because we did a select() first, but handle anyway. */
817 continue;
818 else
819 /* This is an actual failure. */
820 RETURN_FAIL("write() failed");
821 }
822
823 bytes_written += result;
824 ptr += result;
825 }
826
9caa2e86 827 RETURN_INT(bytes_written);
e3dcf906
ML		 828#endif
829}
830
970f279a
AJ		 831SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
832 const void *buf, size_t count)
74510d4b 833{
c33efc48
ML		 834 TRACE("%p, %p, %d", port, buf, count);
835
dec10e31 836 CHECK_OPEN_PORT();
74510d4b
ML		 837
838 if (!buf)
c33efc48 839 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 840
7890cef6 841 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 842
a3cb91f5 843 if (count == 0)
9caa2e86 844 RETURN_INT(0);
a3cb91f5 845
74510d4b
ML		 846#ifdef _WIN32
847 DWORD written = 0;
0765af56 848 BYTE *ptr = (BYTE *) buf;
f92f1f0c 849
e3dcf906
ML		 850 /* Check whether previous write is complete. */
851 if (port->writing) {
852 if (HasOverlappedIoCompleted(&port->write_ovl)) {
853 DEBUG("Previous write completed");
854 port->writing = 0;
855 } else {
856 DEBUG("Previous write not complete");
857 /* Can't take a new write until the previous one finishes. */
9caa2e86 858 RETURN_INT(0);
a3cb91f5 859 }
e3dcf906 860 }
a3cb91f5 861
e3dcf906
ML		 862 /* Set timeout. */
863 port->timeouts.WriteTotalTimeoutConstant = 0;
864 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
865 RETURN_FAIL("SetCommTimeouts() failed");
866
dc422c04
UH		 867 /*
868 * Keep writing data until the OS has to actually start an async IO
869 * for it. At that point we know the buffer is full.
870 */
871 while (written < count) {
e3dcf906
ML		 872 /* Copy first byte of user buffer. */
873 port->pending_byte = *ptr++;
874
875 /* Start asynchronous write. */
876 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
877 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 878 if (HasOverlappedIoCompleted(&port->write_ovl)) {
879 DEBUG("Asynchronous write completed immediately");
880 port->writing = 0;
881 written++;
882 continue;
883 } else {
884 DEBUG("Asynchronous write running");
885 port->writing = 1;
9caa2e86 886 RETURN_INT(++written);
64d99621 887 }
a3cb91f5 888 } else {
e3dcf906
ML		 889 /* Actual failure of some kind. */
890 RETURN_FAIL("WriteFile() failed");
a3cb91f5 891 }
e3dcf906 892 } else {
9af8cff3 893 DEBUG("Single byte written immediately");
e3dcf906 894 written++;
a3cb91f5
ML		 895 }
896 }
897
9af8cff3 898 DEBUG("All bytes written immediately");
e3dcf906 899
9caa2e86 900 RETURN_INT(written);
74510d4b
ML		 901#else
902 /* Returns the number of bytes written, or -1 upon failure. */
903 ssize_t written = write(port->fd, buf, count);
f92f1f0c 904
74510d4b 905 if (written < 0)
c33efc48 906 RETURN_FAIL("write() failed");
74510d4b 907 else
9caa2e86 908 RETURN_INT(written);
74510d4b
ML		 909#endif
910}
911
970f279a
AJ		 912SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
913 size_t count, unsigned int timeout)
e3dcf906
ML		 914{
915 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
916
917 CHECK_OPEN_PORT();
918
919 if (!buf)
920 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
921
922 if (timeout)
7890cef6
ML		 923 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
924 count, port->name, timeout);
e3dcf906 925 else
7890cef6
ML		 926 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
927 count, port->name);
e3dcf906
ML		 928
929 if (count == 0)
9caa2e86 930 RETURN_INT(0);
e3dcf906
ML		 931
932#ifdef _WIN32
933 DWORD bytes_read = 0;
47fcf8ec
ML		 934 DWORD bytes_remaining;
935 int ret;
e3dcf906
ML		 936
937 /* Set timeout. */
938 port->timeouts.ReadIntervalTimeout = 0;
939 port->timeouts.ReadTotalTimeoutConstant = timeout;
940 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
941 RETURN_FAIL("SetCommTimeouts() failed");
942
943 /* Start read. */
944 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) {
945 if (GetLastError() == ERROR_IO_PENDING) {
946 DEBUG("Waiting for read to complete");
947 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
7890cef6 948 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
e3dcf906
ML		 949 } else {
950 RETURN_FAIL("ReadFile() failed");
951 }
952 } else {
953 DEBUG("Read completed immediately");
6f1186aa
ML		 954 bytes_read = count;
955 }
956
47fcf8ec
ML		 957 ret = sp_input_waiting(port);
958
959 if (ret < 0)
960 RETURN_CODEVAL(ret);
961
962 bytes_remaining = ret;
963
964 /* Restart wait operation if buffer was emptied. */
965 if (bytes_read > 0 && bytes_remaining == 0)
966 TRY(restart_wait(port));
6f1186aa 967
9caa2e86 968 RETURN_INT(bytes_read);
6f1186aa 969
e3dcf906
ML		 970#else
971 size_t bytes_read = 0;
972 unsigned char *ptr = (unsigned char *) buf;
973 struct timeval start, delta, now, end = {0, 0};
974 fd_set fds;
975 int result;
976
977 if (timeout) {
978 /* Get time at start of operation. */
979 gettimeofday(&start, NULL);
980 /* Define duration of timeout. */
981 delta.tv_sec = timeout / 1000;
1b342042 982 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 983 /* Calculate time at which we should give up. */
984 timeradd(&start, &delta, &end);
985 }
986
987 /* Loop until we have the requested number of bytes. */
dc422c04 988 while (bytes_read < count) {
e3dcf906
ML		 989 /* Wait until data is available. */
990 FD_ZERO(&fds);
991 FD_SET(port->fd, &fds);
992 if (timeout) {
993 gettimeofday(&now, NULL);
994 if (timercmp(&now, &end, >))
995 /* Timeout has expired. */
9caa2e86 996 RETURN_INT(bytes_read);
e3dcf906
ML		 997 timersub(&end, &now, &delta);
998 }
999 result = select(port->fd + 1, &fds, NULL, NULL, timeout ? &delta : NULL);
63a17c64
ML		 1000 if (result < 0) {
1001 if (errno == EINTR) {
1002 DEBUG("select() call was interrupted, repeating");
1003 continue;
1004 } else {
1005 RETURN_FAIL("select() failed");
1006 }
1007 } else if (result == 0) {
dc422c04 1008 DEBUG("Read timed out");
9caa2e86 1009 RETURN_INT(bytes_read);
e3dcf906
ML		 1010 }
1011
1012 /* Do read. */
1013 result = read(port->fd, ptr, count - bytes_read);
1014
1015 if (result < 0) {
1016 if (errno == EAGAIN)
1017 /* This shouldn't happen because we did a select() first, but handle anyway. */
1018 continue;
1019 else
1020 /* This is an actual failure. */
1021 RETURN_FAIL("read() failed");
1022 }
1023
1024 bytes_read += result;
1025 ptr += result;
1026 }
1027
9caa2e86 1028 RETURN_INT(bytes_read);
e3dcf906
ML		 1029#endif
1030}
1031
970f279a
AJ		 1032SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1033 size_t count)
74510d4b 1034{
c33efc48
ML		 1035 TRACE("%p, %p, %d", port, buf, count);
1036
dec10e31 1037 CHECK_OPEN_PORT();
74510d4b
ML		 1038
1039 if (!buf)
c33efc48 1040 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1041
7890cef6 1042 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1043
74510d4b 1044#ifdef _WIN32
e3dcf906 1045 DWORD bytes_read;
47fcf8ec
ML		 1046 DWORD bytes_remaining;
1047 int ret;
f92f1f0c 1048
e3dcf906
ML		 1049 /* Set timeout. */
1050 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1051 port->timeouts.ReadTotalTimeoutConstant = 0;
1052 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1053 RETURN_FAIL("SetCommTimeouts() failed");
1054
1055 /* Do read. */
1056 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1057 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1058
1059 /* Get number of bytes read. */
1622ef60
ML		 1060 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1061 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1062
47fcf8ec
ML		 1063 ret = sp_input_waiting(port);
1064
1065 if (ret < 0)
1066 RETURN_CODEVAL(ret);
1067
1068 bytes_remaining = ret;
1069
1070 /* Restart wait operation if buffer was emptied. */
1071 if (bytes_read > 0 && bytes_remaining == 0)
1072 TRY(restart_wait(port));
6f1186aa 1073
9caa2e86 1074 RETURN_INT(bytes_read);
74510d4b
ML		 1075#else
1076 ssize_t bytes_read;
f92f1f0c 1077
74510d4b 1078 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1079 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1080 if (errno == EAGAIN)
1081 /* No bytes available. */
33d5ff47
ML		 1082 bytes_read = 0;
1083 else
1084 /* This is an actual failure. */
1085 RETURN_FAIL("read() failed");
1086 }
9caa2e86 1087 RETURN_INT(bytes_read);
74510d4b
ML		 1088#endif
1089}
1090
970f279a 1091SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1092{
1093 TRACE("%p", port);
1094
1095 CHECK_OPEN_PORT();
1096
7890cef6 1097 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1098
1099#ifdef _WIN32
1100 DWORD errors;
1101 COMSTAT comstat;
1102
1103 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1104 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1105 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1106#else
1107 int bytes_waiting;
1108 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1109 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1110 RETURN_INT(bytes_waiting);
3353c22f
ML		 1111#endif
1112}
1113
970f279a 1114SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1115{
1116 TRACE("%p", port);
1117
1118 CHECK_OPEN_PORT();
1119
7890cef6 1120 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1121
1122#ifdef _WIN32
1123 DWORD errors;
1124 COMSTAT comstat;
1125
1126 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1127 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1128 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1129#else
1130 int bytes_waiting;
1131 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1132 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1133 RETURN_INT(bytes_waiting);
3353c22f
ML		 1134#endif
1135}
1136
970f279a 1137SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1138{
1139 struct sp_event_set *result;
1140
1141 TRACE("%p", result_ptr);
1142
1143 if (!result_ptr)
1144 RETURN_ERROR(SP_ERR_ARG, "Null result");
1145
1146 *result_ptr = NULL;
1147
1148 if (!(result = malloc(sizeof(struct sp_event_set))))
1149 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1150
1151 memset(result, 0, sizeof(struct sp_event_set));
1152
1153 *result_ptr = result;
1154
1155 RETURN_OK();
1156}
1157
1158static enum sp_return add_handle(struct sp_event_set *event_set,
1159 event_handle handle, enum sp_event mask)
1160{
1161 void *new_handles;
1162 enum sp_event *new_masks;
1163
1164 TRACE("%p, %d, %d", event_set, handle, mask);
1165
1166 if (!(new_handles = realloc(event_set->handles,
1167 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1168 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1169
ac323d80
UH		 1170 event_set->handles = new_handles;
1171
6f1186aa 1172 if (!(new_masks = realloc(event_set->masks,
ac323d80 1173 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1174 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1175
6f1186aa
ML		 1176 event_set->masks = new_masks;
1177
1178 ((event_handle *) event_set->handles)[event_set->count] = handle;
1179 event_set->masks[event_set->count] = mask;
1180
1181 event_set->count++;
1182
1183 RETURN_OK();
1184}
1185
970f279a 1186SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1187 const struct sp_port *port, enum sp_event mask)
1188{
1189 TRACE("%p, %p, %d", event_set, port, mask);
1190
1191 if (!event_set)
1192 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1193
1194 if (!port)
1195 RETURN_ERROR(SP_ERR_ARG, "Null port");
1196
1197 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1198 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1199
1200 if (!mask)
1201 RETURN_OK();
1202
1203#ifdef _WIN32
1204 enum sp_event handle_mask;
1205 if ((handle_mask = mask & SP_EVENT_TX_READY))
1206 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1207 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1208 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1209#else
1210 TRY(add_handle(event_set, port->fd, mask));
1211#endif
1212
1213 RETURN_OK();
1214}
1215
970f279a 1216SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1217{
1218 TRACE("%p", event_set);
1219
1220 if (!event_set) {
1221 DEBUG("Null event set");
1222 RETURN();
1223 }
1224
1225 DEBUG("Freeing event set");
1226
1227 if (event_set->handles)
1228 free(event_set->handles);
1229 if (event_set->masks)
1230 free(event_set->masks);
1231
1232 free(event_set);
1233
1234 RETURN();
1235}
1236
970f279a
AJ		 1237SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1238 unsigned int timeout)
6f1186aa
ML		 1239{
1240 TRACE("%p, %d", event_set, timeout);
1241
1242 if (!event_set)
1243 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1244
1245#ifdef _WIN32
1246 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1247 timeout ? timeout : INFINITE) == WAIT_FAILED)
1248 RETURN_FAIL("WaitForMultipleObjects() failed");
1249
1250 RETURN_OK();
1251#else
1252 struct timeval start, delta, now, end = {0, 0};
1253 int result, timeout_remaining;
1254 struct pollfd *pollfds;
1255 unsigned int i;
1256
1257 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1258 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1259
1260 for (i = 0; i < event_set->count; i++) {
1261 pollfds[i].fd = ((int *) event_set->handles)[i];
1262 pollfds[i].events = 0;
1263 pollfds[i].revents = 0;
1264 if (event_set->masks[i] & SP_EVENT_RX_READY)
1265 pollfds[i].events |= POLLIN;
1266 if (event_set->masks[i] & SP_EVENT_TX_READY)
1267 pollfds[i].events |= POLLOUT;
1268 if (event_set->masks[i] & SP_EVENT_ERROR)
1269 pollfds[i].events |= POLLERR;
1270 }
1271
1272 if (timeout) {
1273 /* Get time at start of operation. */
1274 gettimeofday(&start, NULL);
1275 /* Define duration of timeout. */
1276 delta.tv_sec = timeout / 1000;
1277 delta.tv_usec = (timeout % 1000) * 1000;
1278 /* Calculate time at which we should give up. */
1279 timeradd(&start, &delta, &end);
1280 }
1281
1282 /* Loop until an event occurs. */
dc422c04 1283 while (1) {
6f1186aa
ML		 1284 if (timeout) {
1285 gettimeofday(&now, NULL);
1286 if (timercmp(&now, &end, >)) {
dc422c04 1287 DEBUG("Wait timed out");
6f1186aa
ML		 1288 break;
1289 }
1290 timersub(&end, &now, &delta);
1291 timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000;
1292 }
1293
1294 result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1);
1295
1296 if (result < 0) {
1297 if (errno == EINTR) {
1298 DEBUG("poll() call was interrupted, repeating");
1299 continue;
1300 } else {
1301 free(pollfds);
1302 RETURN_FAIL("poll() failed");
1303 }
1304 } else if (result == 0) {
1305 DEBUG("poll() timed out");
1306 break;
1307 } else {
1308 DEBUG("poll() completed");
1309 break;
1310 }
1311 }
1312
1313 free(pollfds);
1314 RETURN_OK();
1315#endif
1316}
1317
5cea279a 1318#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1319static enum sp_return get_baudrate(int fd, int *baudrate)
1320{
1321 void *data;
1322
c33efc48
ML		 1323 TRACE("%d, %p", fd, baudrate);
1324
ea667be7
ML		 1325 DEBUG("Getting baud rate");
1326
7a6d2196 1327 if (!(data = malloc(get_termios_size())))
c33efc48 1328 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1329
8d43110a
ML		 1330 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1331 free(data);
dc422c04 1332 RETURN_FAIL("Getting termios failed");
8d43110a 1333 }
7a6d2196
ML		 1334
1335 *baudrate = get_termios_speed(data);
1336
8d43110a
ML		 1337 free(data);
1338
c33efc48 1339 RETURN_OK();
7a6d2196
ML		 1340}
1341
1342static enum sp_return set_baudrate(int fd, int baudrate)
1343{
1344 void *data;
1345
c33efc48
ML		 1346 TRACE("%d, %d", fd, baudrate);
1347
ea667be7
ML		 1348 DEBUG("Getting baud rate");
1349
7a6d2196 1350 if (!(data = malloc(get_termios_size())))
c33efc48 1351 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1352
8d43110a
ML		 1353 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1354 free(data);
dc422c04 1355 RETURN_FAIL("Getting termios failed");
8d43110a 1356 }
7a6d2196 1357
ea667be7
ML		 1358 DEBUG("Setting baud rate");
1359
7a6d2196
ML		 1360 set_termios_speed(data, baudrate);
1361
8d43110a
ML		 1362 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1363 free(data);
dc422c04 1364 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1365 }
1366
1367 free(data);
7a6d2196 1368
c33efc48 1369 RETURN_OK();
7a6d2196 1370}
5cea279a 1371#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1372
1373#ifdef USE_TERMIOX
bd791fe1 1374static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1375{
bd791fe1 1376 void *termx;
40978c2b 1377
bd791fe1 1378 TRACE("%d, %p", fd, data);
c33efc48 1379
ea667be7
ML		 1380 DEBUG("Getting advanced flow control");
1381
bd791fe1 1382 if (!(termx = malloc(get_termiox_size())))
c33efc48 1383 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1384
bd791fe1
ML		 1385 if (ioctl(fd, TCGETX, termx) < 0) {
1386 free(termx);
dc422c04 1387 RETURN_FAIL("Getting termiox failed");
8d43110a 1388 }
40978c2b 1389
bd791fe1
ML		 1390 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1391 &data->dtr_flow, &data->dsr_flow);
40978c2b 1392
bd791fe1 1393 free(termx);
8d43110a 1394
c33efc48 1395 RETURN_OK();
40978c2b
ML		 1396}
1397
bd791fe1 1398static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1399{
bd791fe1 1400 void *termx;
40978c2b 1401
bd791fe1 1402 TRACE("%d, %p", fd, data);
c33efc48 1403
ea667be7
ML		 1404 DEBUG("Getting advanced flow control");
1405
bd791fe1 1406 if (!(termx = malloc(get_termiox_size())))
c33efc48 1407 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1408
bd791fe1
ML		 1409 if (ioctl(fd, TCGETX, termx) < 0) {
1410 free(termx);
dc422c04 1411 RETURN_FAIL("Getting termiox failed");
8d43110a 1412 }
40978c2b 1413
ea667be7
ML		 1414 DEBUG("Setting advanced flow control");
1415
bd791fe1
ML		 1416 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1417 data->dtr_flow, data->dsr_flow);
40978c2b 1418
bd791fe1
ML		 1419 if (ioctl(fd, TCSETX, termx) < 0) {
1420 free(termx);
dc422c04 1421 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1422 }
1423
bd791fe1 1424 free(termx);
40978c2b 1425
c33efc48 1426 RETURN_OK();
40978c2b
ML		 1427}
1428#endif /* USE_TERMIOX */
7a6d2196 1429
eb6ed20f
ML		 1430static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1431 struct sp_port_config *config)
8094e4a0 1432{
da2748bf 1433 unsigned int i;
cbf628c7 1434
c33efc48
ML		 1435 TRACE("%p, %p, %p", port, data, config);
1436
7890cef6 1437 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1438
8094e4a0 1439#ifdef _WIN32
e33ab9aa 1440 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1441 RETURN_FAIL("GetCommState() failed");
8094e4a0 1442
067417af 1443 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1444 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1445 config->baudrate = std_baudrates[i].value;
1446 break;
1447 }
1448 }
1449
1450 if (i == NUM_STD_BAUDRATES)
1451 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1452 config->baudrate = data->dcb.BaudRate;
067417af 1453
e33ab9aa 1454 config->bits = data->dcb.ByteSize;
067417af 1455
e33ab9aa
ML		 1456 if (data->dcb.fParity)
1457 switch (data->dcb.Parity) {
067417af
ML		 1458 case NOPARITY:
1459 config->parity = SP_PARITY_NONE;
1460 break;
e432ce60
ML		 1461 case ODDPARITY:
1462 config->parity = SP_PARITY_ODD;
1463 break;
067417af
ML		 1464 case EVENPARITY:
1465 config->parity = SP_PARITY_EVEN;
1466 break;
e432ce60
ML		 1467 case MARKPARITY:
1468 config->parity = SP_PARITY_MARK;
1469 break;
1470 case SPACEPARITY:
1471 config->parity = SP_PARITY_SPACE;
067417af
ML		 1472 break;
1473 default:
1474 config->parity = -1;
1475 }
1476 else
1477 config->parity = SP_PARITY_NONE;
1478
e33ab9aa 1479 switch (data->dcb.StopBits) {
067417af
ML		 1480 case ONESTOPBIT:
1481 config->stopbits = 1;
1482 break;
1483 case TWOSTOPBITS:
1484 config->stopbits = 2;
1485 break;
1486 default:
1487 config->stopbits = -1;
1488 }
1489
e33ab9aa 1490 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1491 case RTS_CONTROL_DISABLE:
1492 config->rts = SP_RTS_OFF;
1493 break;
1494 case RTS_CONTROL_ENABLE:
1495 config->rts = SP_RTS_ON;
1496 break;
1497 case RTS_CONTROL_HANDSHAKE:
1498 config->rts = SP_RTS_FLOW_CONTROL;
1499 break;
1500 default:
1501 config->rts = -1;
067417af
ML		 1502 }
1503
e33ab9aa 1504 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1505
e33ab9aa 1506 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1507 case DTR_CONTROL_DISABLE:
1508 config->dtr = SP_DTR_OFF;
1509 break;
1510 case DTR_CONTROL_ENABLE:
1511 config->dtr = SP_DTR_ON;
1512 break;
1513 case DTR_CONTROL_HANDSHAKE:
1514 config->dtr = SP_DTR_FLOW_CONTROL;
1515 break;
1516 default:
1517 config->dtr = -1;
067417af
ML		 1518 }
1519
e33ab9aa
ML		 1520 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1521
c6754b45
ML		 1522 if (data->dcb.fInX) {
1523 if (data->dcb.fOutX)
1524 config->xon_xoff = SP_XONXOFF_INOUT;
1525 else
1526 config->xon_xoff = SP_XONXOFF_IN;
1527 } else {
1528 if (data->dcb.fOutX)
1529 config->xon_xoff = SP_XONXOFF_OUT;
1530 else
1531 config->xon_xoff = SP_XONXOFF_DISABLED;
1532 }
1533
e33ab9aa
ML		 1534#else // !_WIN32
1535
1536 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1537 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1538
1539 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1540 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1541
1542#ifdef USE_TERMIOX
bd791fe1 1543 int ret = get_flow(port->fd, data);
68ec29db
ML		 1544
1545 if (ret == SP_ERR_FAIL && errno == EINVAL)
1546 data->termiox_supported = 0;
1547 else if (ret < 0)
c33efc48 1548 RETURN_CODEVAL(ret);
68ec29db
ML		 1549 else
1550 data->termiox_supported = 1;
1551#else
1552 data->termiox_supported = 0;
40978c2b
ML		 1553#endif
1554
067417af 1555 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1556 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1557 config->baudrate = std_baudrates[i].value;
1558 break;
1559 }
1560 }
1561
31b3a8f5
MH		 1562 if (i == NUM_STD_BAUDRATES) {
1563#ifdef __APPLE__
1564 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1565#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1566 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1567#else
067417af 1568 config->baudrate = -1;
31b3a8f5
MH		 1569#endif
1570 }
067417af 1571
e33ab9aa 1572 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1573 case CS8:
1574 config->bits = 8;
1575 break;
1576 case CS7:
1577 config->bits = 7;
1578 break;
1579 case CS6:
1580 config->bits = 6;
1581 break;
1582 case CS5:
1583 config->bits = 5;
1584 break;
1585 default:
1586 config->bits = -1;
1587 }
1588
e33ab9aa 1589 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1590 config->parity = SP_PARITY_NONE;
e33ab9aa 1591 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1592 config->parity = -1;
c3e05092 1593#ifdef CMSPAR
e432ce60
ML		 1594 else if (data->term.c_cflag & CMSPAR)
1595 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1596#endif
067417af 1597 else
e33ab9aa 1598 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1599
e33ab9aa 1600 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1601
e33ab9aa 1602 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1603 config->rts = SP_RTS_FLOW_CONTROL;
1604 config->cts = SP_CTS_FLOW_CONTROL;
1605 } else {
bd791fe1 1606 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1607 config->rts = SP_RTS_FLOW_CONTROL;
1608 else
1609 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1610
bd791fe1 1611 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1612 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1613 }
1614
bd791fe1 1615 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1616 config->dtr = SP_DTR_FLOW_CONTROL;
1617 else
1618 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1619
bd791fe1 1620 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1621 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1622
e29b93a5
ML		 1623 if (data->term.c_iflag & IXOFF) {
1624 if (data->term.c_iflag & IXON)
1625 config->xon_xoff = SP_XONXOFF_INOUT;
1626 else
1627 config->xon_xoff = SP_XONXOFF_IN;
1628 } else {
1629 if (data->term.c_iflag & IXON)
1630 config->xon_xoff = SP_XONXOFF_OUT;
1631 else
1632 config->xon_xoff = SP_XONXOFF_DISABLED;
1633 }
067417af
ML		 1634#endif
1635
c33efc48 1636 RETURN_OK();
067417af
ML		 1637}
1638
7a6d2196 1639static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1640 const struct sp_port_config *config)
18fc2dd1 1641{
e33ab9aa 1642 unsigned int i;
31b3a8f5
MH		 1643#ifdef __APPLE__
1644 BAUD_TYPE baud_nonstd;
1645
1646 baud_nonstd = B0;
1647#endif
5cea279a 1648#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1649 int baud_nonstd = 0;
1650#endif
18fc2dd1 1651
c33efc48
ML		 1652 TRACE("%p, %p, %p", port, data, config);
1653
7890cef6 1654 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1655
e33ab9aa 1656#ifdef _WIN32
eac329d2 1657 if (config->baudrate >= 0) {
e33ab9aa
ML		 1658 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1659 if (config->baudrate == std_baudrates[i].value) {
1660 data->dcb.BaudRate = std_baudrates[i].index;
1661 break;
1662 }
1663 }
18fc2dd1 1664
e33ab9aa
ML		 1665 if (i == NUM_STD_BAUDRATES)
1666 data->dcb.BaudRate = config->baudrate;
1667 }
18fc2dd1 1668
e33ab9aa
ML		 1669 if (config->bits >= 0)
1670 data->dcb.ByteSize = config->bits;
1671
1672 if (config->parity >= 0) {
1673 switch (config->parity) {
e33ab9aa
ML		 1674 case SP_PARITY_NONE:
1675 data->dcb.Parity = NOPARITY;
1676 break;
e432ce60
ML		 1677 case SP_PARITY_ODD:
1678 data->dcb.Parity = ODDPARITY;
1679 break;
e33ab9aa
ML		 1680 case SP_PARITY_EVEN:
1681 data->dcb.Parity = EVENPARITY;
1682 break;
e432ce60
ML		 1683 case SP_PARITY_MARK:
1684 data->dcb.Parity = MARKPARITY;
1685 break;
1686 case SP_PARITY_SPACE:
1687 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1688 break;
1689 default:
c33efc48 1690 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1691 }
18fc2dd1
ML		 1692 }
1693
e33ab9aa
ML		 1694 if (config->stopbits >= 0) {
1695 switch (config->stopbits) {
1696 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1697 case 1:
1698 data->dcb.StopBits = ONESTOPBIT;
1699 break;
1700 case 2:
1701 data->dcb.StopBits = TWOSTOPBITS;
1702 break;
1703 default:
c33efc48 1704 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1705 }
1706 }
1707
1708 if (config->rts >= 0) {
1709 switch (config->rts) {
1710 case SP_RTS_OFF:
1711 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1712 break;
1713 case SP_RTS_ON:
1714 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1715 break;
1716 case SP_RTS_FLOW_CONTROL:
1717 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1718 break;
1719 default:
c33efc48 1720 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1721 }
1722 }
1723
1724 if (config->cts >= 0) {
1725 switch (config->cts) {
1726 case SP_CTS_IGNORE:
1727 data->dcb.fOutxCtsFlow = FALSE;
1728 break;
1729 case SP_CTS_FLOW_CONTROL:
1730 data->dcb.fOutxCtsFlow = TRUE;
1731 break;
1732 default:
c33efc48 1733 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1734 }
1735 }
1736
1737 if (config->dtr >= 0) {
1738 switch (config->dtr) {
1739 case SP_DTR_OFF:
1740 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1741 break;
1742 case SP_DTR_ON:
1743 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1744 break;
1745 case SP_DTR_FLOW_CONTROL:
1746 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1747 break;
1748 default:
c33efc48 1749 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1750 }
1751 }
1752
1753 if (config->dsr >= 0) {
1754 switch (config->dsr) {
1755 case SP_DSR_IGNORE:
1756 data->dcb.fOutxDsrFlow = FALSE;
1757 break;
1758 case SP_DSR_FLOW_CONTROL:
1759 data->dcb.fOutxDsrFlow = TRUE;
1760 break;
1761 default:
c33efc48 1762 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1763 }
18fc2dd1
ML		 1764 }
1765
e33ab9aa
ML		 1766 if (config->xon_xoff >= 0) {
1767 switch (config->xon_xoff) {
1768 case SP_XONXOFF_DISABLED:
1769 data->dcb.fInX = FALSE;
1770 data->dcb.fOutX = FALSE;
1771 break;
1772 case SP_XONXOFF_IN:
1773 data->dcb.fInX = TRUE;
1774 data->dcb.fOutX = FALSE;
1775 break;
1776 case SP_XONXOFF_OUT:
1777 data->dcb.fInX = FALSE;
1778 data->dcb.fOutX = TRUE;
1779 break;
1780 case SP_XONXOFF_INOUT:
1781 data->dcb.fInX = TRUE;
1782 data->dcb.fOutX = TRUE;
1783 break;
1784 default:
c33efc48 1785 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1786 }
1787 }
1788
1789 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1790 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1791
31b3a8f5 1792#else /* !_WIN32 */
e33ab9aa 1793
7a6d2196
ML		 1794 int controlbits;
1795
eac329d2 1796 if (config->baudrate >= 0) {
e33ab9aa
ML		 1797 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1798 if (config->baudrate == std_baudrates[i].value) {
1799 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1800 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1801
1802 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1803 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1804 break;
1805 }
1806 }
1807
31b3a8f5
MH		 1808 /* Non-standard baud rate */
1809 if (i == NUM_STD_BAUDRATES) {
1810#ifdef __APPLE__
24abdb68 1811 /* Set "dummy" baud rate. */
31b3a8f5 1812 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1813 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1814 baud_nonstd = config->baudrate;
5cea279a 1815#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1816 baud_nonstd = 1;
31b3a8f5 1817#else
c33efc48 1818 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1819#endif
1820 }
e33ab9aa
ML		 1821 }
1822
1823 if (config->bits >= 0) {
1824 data->term.c_cflag &= ~CSIZE;
1825 switch (config->bits) {
1826 case 8:
1827 data->term.c_cflag |= CS8;
1828 break;
1829 case 7:
1830 data->term.c_cflag |= CS7;
1831 break;
1832 case 6:
1833 data->term.c_cflag |= CS6;
1834 break;
23922313
UH		 1835 case 5:
1836 data->term.c_cflag |= CS5;
1837 break;
e33ab9aa 1838 default:
c33efc48 1839 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1840 }
1841 }
1842
1843 if (config->parity >= 0) {
1844 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1845 data->term.c_cflag &= ~(PARENB | PARODD);
1846#ifdef CMSPAR
1847 data->term.c_cflag &= ~CMSPAR;
1848#endif
e33ab9aa
ML		 1849 switch (config->parity) {
1850 case SP_PARITY_NONE:
1851 data->term.c_iflag |= IGNPAR;
1852 break;
1853 case SP_PARITY_EVEN:
1854 data->term.c_cflag |= PARENB;
1855 break;
1856 case SP_PARITY_ODD:
1857 data->term.c_cflag |= PARENB | PARODD;
1858 break;
afb518f0 1859#ifdef CMSPAR
e432ce60 1860 case SP_PARITY_MARK:
c3e05092 1861 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1862 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1863 break;
1864 case SP_PARITY_SPACE:
c3e05092 1865 data->term.c_cflag |= PARENB;
c3e05092 1866 data->term.c_cflag |= CMSPAR;
e432ce60 1867 break;
afb518f0
ML		 1868#else
1869 case SP_PARITY_MARK:
1870 case SP_PARITY_SPACE:
1871 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1872#endif
e33ab9aa 1873 default:
c33efc48 1874 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1875 }
1876 }
1877
1878 if (config->stopbits >= 0) {
1879 data->term.c_cflag &= ~CSTOPB;
1880 switch (config->stopbits) {
1881 case 1:
1882 data->term.c_cflag &= ~CSTOPB;
1883 break;
1884 case 2:
1885 data->term.c_cflag |= CSTOPB;
1886 break;
1887 default:
c33efc48 1888 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1889 }
1890 }
1891
eac329d2 1892 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1893 if (data->termiox_supported) {
bd791fe1 1894 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1895 switch (config->rts) {
1896 case SP_RTS_OFF:
1897 case SP_RTS_ON:
1898 controlbits = TIOCM_RTS;
1899 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1900 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1901 break;
1902 case SP_RTS_FLOW_CONTROL:
bd791fe1 1903 data->rts_flow = 1;
68ec29db
ML		 1904 break;
1905 default:
1906 break;
e33ab9aa 1907 }
68ec29db 1908 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1909 data->cts_flow = 1;
e33ab9aa 1910
bd791fe1 1911 if (data->rts_flow && data->cts_flow)
e33ab9aa 1912 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1913 else
1914 data->term.c_iflag &= ~CRTSCTS;
1915 } else {
1916 /* Asymmetric use of RTS/CTS not supported. */
1917 if (data->term.c_iflag & CRTSCTS) {
1918 /* Flow control can only be disabled for both RTS & CTS together. */
1919 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1920 if (config->cts != SP_CTS_IGNORE)
c33efc48 1921 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1922 }
1923 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1924 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1925 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1926 }
e33ab9aa 1927 } else {
68ec29db
ML		 1928 /* Flow control can only be enabled for both RTS & CTS together. */
1929 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1930 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1931 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1932 }
1933
1934 if (config->rts >= 0) {
1935 if (config->rts == SP_RTS_FLOW_CONTROL) {
1936 data->term.c_iflag |= CRTSCTS;
1937 } else {
1938 controlbits = TIOCM_RTS;
1939 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1940 &controlbits) < 0)
c33efc48 1941 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1942 }
e33ab9aa
ML		 1943 }
1944 }
1945 }
1946
eac329d2 1947 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1948 if (data->termiox_supported) {
bd791fe1 1949 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1950 switch (config->dtr) {
1951 case SP_DTR_OFF:
1952 case SP_DTR_ON:
1953 controlbits = TIOCM_DTR;
1954 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1955 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1956 break;
1957 case SP_DTR_FLOW_CONTROL:
bd791fe1 1958 data->dtr_flow = 1;
68ec29db
ML		 1959 break;
1960 default:
1961 break;
1962 }
1963 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 1964 data->dsr_flow = 1;
68ec29db
ML		 1965 } else {
1966 /* DTR/DSR flow control not supported. */
1967 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 1968 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 1969
68ec29db
ML		 1970 if (config->dtr >= 0) {
1971 controlbits = TIOCM_DTR;
1972 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
1973 &controlbits) < 0)
c33efc48 1974 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 1975 }
e33ab9aa
ML		 1976 }
1977 }
1978
1979 if (config->xon_xoff >= 0) {
1980 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
1981 switch (config->xon_xoff) {
1982 case SP_XONXOFF_DISABLED:
1983 break;
1984 case SP_XONXOFF_IN:
1985 data->term.c_iflag |= IXOFF;
1986 break;
1987 case SP_XONXOFF_OUT:
1988 data->term.c_iflag |= IXON | IXANY;
1989 break;
1990 case SP_XONXOFF_INOUT:
1991 data->term.c_iflag |= IXON | IXOFF | IXANY;
1992 break;
1993 default:
c33efc48 1994 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1995 }
1996 }
1997
3f5c06d0 1998 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 1999 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2000
2001#ifdef __APPLE__
2002 if (baud_nonstd != B0) {
2003 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2004 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2005 /*
2006 * Set baud rates in data->term to correct, but incompatible
2007 * with tcsetattr() value, same as delivered by tcgetattr().
2008 */
31b3a8f5 2009 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2010 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2011 }
7a6d2196 2012#elif defined(__linux__)
5cea279a 2013#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2014 if (baud_nonstd)
2015 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2016#endif
40978c2b 2017#ifdef USE_TERMIOX
68ec29db 2018 if (data->termiox_supported)
bd791fe1 2019 TRY(set_flow(port->fd, data));
40978c2b 2020#endif
7a6d2196 2021#endif
31b3a8f5
MH		 2022
2023#endif /* !_WIN32 */
e33ab9aa 2024
c33efc48 2025 RETURN_OK();
e33ab9aa
ML		 2026}
2027
970f279a 2028SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2029{
59131d60 2030 struct sp_port_config *config;
9b1502ef 2031
00d8c56d
UH		 2032 TRACE("%p", config_ptr);
2033
9b1502ef
ML		 2034 if (!config_ptr)
2035 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2036
59131d60
ML		 2037 *config_ptr = NULL;
2038
2039 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2040 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2041
59131d60
ML		 2042 config->baudrate = -1;
2043 config->bits = -1;
2044 config->parity = -1;
2045 config->stopbits = -1;
2046 config->rts = -1;
2047 config->cts = -1;
2048 config->dtr = -1;
2049 config->dsr = -1;
2050
2051 *config_ptr = config;
2052
9b1502ef
ML		 2053 RETURN_OK();
2054}
2055
970f279a 2056SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2057{
2058 TRACE("%p", config);
2059
2060 if (!config)
2061 DEBUG("Null config");
2062 else
2063 free(config);
2064
2065 RETURN();
2066}
2067
970f279a
AJ		 2068SP_API enum sp_return sp_get_config(struct sp_port *port,
2069 struct sp_port_config *config)
70cd37de
ML		 2070{
2071 struct port_data data;
2072
2073 TRACE("%p, %p", port, config);
2074
2075 CHECK_OPEN_PORT();
2076
2077 if (!config)
9b1502ef 2078 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2079
2080 TRY(get_config(port, &data, config));
2081
2082 RETURN_OK();
2083}
2084
970f279a
AJ		 2085SP_API enum sp_return sp_set_config(struct sp_port *port,
2086 const struct sp_port_config *config)
e33ab9aa 2087{
8f189c4c 2088 struct port_data data;
e33ab9aa
ML		 2089 struct sp_port_config prev_config;
2090
c33efc48
ML		 2091 TRACE("%p, %p", port, config);
2092
dec10e31 2093 CHECK_OPEN_PORT();
823690ae
ML		 2094
2095 if (!config)
c33efc48 2096 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2097
e33ab9aa
ML		 2098 TRY(get_config(port, &data, &prev_config));
2099 TRY(set_config(port, &data, config));
74510d4b 2100
c33efc48 2101 RETURN_OK();
74510d4b
ML		 2102}
2103
9b1502ef 2104#define CREATE_ACCESSORS(x, type) \
970f279a 2105SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2106 struct port_data data; \
e33ab9aa 2107 struct sp_port_config config; \
c33efc48 2108 TRACE("%p, %d", port, x); \
dec10e31 2109 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2110 TRY(get_config(port, &data, &config)); \
2111 config.x = x; \
2112 TRY(set_config(port, &data, &config)); \
c33efc48 2113 RETURN_OK(); \
9b1502ef 2114} \
970f279a
AJ		 2115SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2116 type *x) { \
00d8c56d 2117 TRACE("%p, %p", config, x); \
9b1502ef
ML		 2118 if (!config) \
2119 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2120 *x = config->x; \
2121 RETURN_OK(); \
2122} \
970f279a
AJ		 2123SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2124 type x) { \
9b1502ef
ML		 2125 TRACE("%p, %d", config, x); \
2126 if (!config) \
2127 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2128 config->x = x; \
2129 RETURN_OK(); \
9069c2fb
ML		 2130}
2131
9b1502ef
ML		 2132CREATE_ACCESSORS(baudrate, int)
2133CREATE_ACCESSORS(bits, int)
2134CREATE_ACCESSORS(parity, enum sp_parity)
2135CREATE_ACCESSORS(stopbits, int)
2136CREATE_ACCESSORS(rts, enum sp_rts)
2137CREATE_ACCESSORS(cts, enum sp_cts)
2138CREATE_ACCESSORS(dtr, enum sp_dtr)
2139CREATE_ACCESSORS(dsr, enum sp_dsr)
2140CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2141
970f279a
AJ		 2142SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2143 enum sp_flowcontrol flowcontrol)
e33ab9aa 2144{
9b1502ef
ML		 2145 if (!config)
2146 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2147
2148 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2149 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2150
e33ab9aa 2151 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2152 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2153 else
9b1502ef 2154 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2155
2156 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2157 config->rts = SP_RTS_FLOW_CONTROL;
2158 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2159 } else {
9b1502ef
ML		 2160 if (config->rts == SP_RTS_FLOW_CONTROL)
2161 config->rts = SP_RTS_ON;
2162 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2163 }
2164
2165 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2166 config->dtr = SP_DTR_FLOW_CONTROL;
2167 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2168 } else {
9b1502ef
ML		 2169 if (config->dtr == SP_DTR_FLOW_CONTROL)
2170 config->dtr = SP_DTR_ON;
2171 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2172 }
2173
9b1502ef
ML		 2174 RETURN_OK();
2175}
2176
970f279a
AJ		 2177SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2178 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2179{
2180 struct port_data data;
2181 struct sp_port_config config;
2182
2183 TRACE("%p, %d", port, flowcontrol);
2184
2185 CHECK_OPEN_PORT();
2186
2187 TRY(get_config(port, &data, &config));
2188
2189 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2190
e33ab9aa
ML		 2191 TRY(set_config(port, &data, &config));
2192
c33efc48 2193 RETURN_OK();
e33ab9aa
ML		 2194}
2195
970f279a
AJ		 2196SP_API enum sp_return sp_get_signals(struct sp_port *port,
2197 enum sp_signal *signals)
8cf7c697 2198{
c33efc48
ML		 2199 TRACE("%p, %p", port, signals);
2200
dec10e31 2201 CHECK_OPEN_PORT();
8cf7c697
ML		 2202
2203 if (!signals)
c33efc48 2204 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2205
7890cef6 2206 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2207
8cf7c697
ML		 2208 *signals = 0;
2209#ifdef _WIN32
2210 DWORD bits;
2211 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2212 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2213 if (bits & MS_CTS_ON)
2214 *signals |= SP_SIG_CTS;
2215 if (bits & MS_DSR_ON)
2216 *signals |= SP_SIG_DSR;
8cf7c697 2217 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2218 *signals |= SP_SIG_DCD;
2219 if (bits & MS_RING_ON)
8cf7c697
ML		 2220 *signals |= SP_SIG_RI;
2221#else
2222 int bits;
2223 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2224 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2225 if (bits & TIOCM_CTS)
2226 *signals |= SP_SIG_CTS;
2227 if (bits & TIOCM_DSR)
2228 *signals |= SP_SIG_DSR;
2229 if (bits & TIOCM_CAR)
2230 *signals |= SP_SIG_DCD;
2231 if (bits & TIOCM_RNG)
2232 *signals |= SP_SIG_RI;
2233#endif
c33efc48 2234 RETURN_OK();
8cf7c697
ML		 2235}
2236
970f279a 2237SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2238{
c33efc48
ML		 2239 TRACE("%p", port);
2240
dec10e31 2241 CHECK_OPEN_PORT();
90cc3ee6
ML		 2242#ifdef _WIN32
2243 if (SetCommBreak(port->hdl) == 0)
c33efc48 2244 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2245#else
2246 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2247 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2248#endif
2249
c33efc48 2250 RETURN_OK();
90cc3ee6
ML		 2251}
2252
970f279a 2253SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2254{
c33efc48
ML		 2255 TRACE("%p", port);
2256
dec10e31 2257 CHECK_OPEN_PORT();
90cc3ee6
ML		 2258#ifdef _WIN32
2259 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2260 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2261#else
2262 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2263 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2264#endif
2265
c33efc48 2266 RETURN_OK();
90cc3ee6
ML		 2267}
2268
970f279a 2269SP_API int sp_last_error_code(void)
74510d4b 2270{
7890cef6 2271 TRACE_VOID();
74510d4b 2272#ifdef _WIN32
9caa2e86 2273 RETURN_INT(GetLastError());
74510d4b 2274#else
9caa2e86 2275 RETURN_INT(errno);
74510d4b
ML		 2276#endif
2277}
2278
970f279a 2279SP_API char *sp_last_error_message(void)
74510d4b 2280{
7890cef6 2281 TRACE_VOID();
c33efc48 2282
74510d4b
ML		 2283#ifdef _WIN32
2284 LPVOID message;
2285 DWORD error = GetLastError();
2286
2287 FormatMessage(
2288 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2289 FORMAT_MESSAGE_FROM_SYSTEM |
2290 FORMAT_MESSAGE_IGNORE_INSERTS,
2291 NULL,
2292 error,
2293 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2294 (LPTSTR) &message,
2295 0, NULL );
2296
9caa2e86 2297 RETURN_STRING(message);
74510d4b 2298#else
9caa2e86 2299 RETURN_STRING(strerror(errno));
74510d4b
ML		 2300#endif
2301}
2302
970f279a 2303SP_API void sp_free_error_message(char *message)
74510d4b 2304{
c33efc48
ML		 2305 TRACE("%s", message);
2306
74510d4b
ML		 2307#ifdef _WIN32
2308 LocalFree(message);
64eec30d
ML		 2309#else
2310 (void)message;
74510d4b 2311#endif
c33efc48
ML		 2312
2313 RETURN();
74510d4b 2314}
863b35e6 2315
970f279a 2316SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2317{
c33efc48
ML		 2318 TRACE("%p", handler);
2319
863b35e6 2320 sp_debug_handler = handler;
c33efc48
ML		 2321
2322 RETURN();
863b35e6
ML		 2323}
2324
970f279a 2325SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2326{
2327 va_list args;
2328 va_start(args, format);
2329 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2330 fputs("sp: ", stderr);
863b35e6
ML		 2331 vfprintf(stderr, format, args);
2332 }
2333 va_end(args);
2334}
524b0e14 2335
970f279a 2336SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2337{
2338 return SP_PACKAGE_VERSION_MAJOR;
2339}
2340
970f279a 2341SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2342{
2343 return SP_PACKAGE_VERSION_MINOR;
2344}
2345
970f279a 2346SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2347{
2348 return SP_PACKAGE_VERSION_MICRO;
2349}
2350
970f279a 2351SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2352{
2353 return SP_PACKAGE_VERSION_STRING;
2354}
2355
970f279a 2356SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2357{
2358 return SP_LIB_VERSION_CURRENT;
2359}
2360
970f279a 2361SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2362{
2363 return SP_LIB_VERSION_REVISION;
2364}
2365
970f279a 2366SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2367{
2368 return SP_LIB_VERSION_AGE;
2369}
2370
970f279a 2371SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2372{
2373 return SP_LIB_VERSION_STRING;
2374}
2375
2376/** @} */
Serial port access library