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