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Fix build for platforms without enumeration & port metadata support.
[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
ML		 26
27const struct std_baudrate std_baudrates[] = {
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
863b35e6
ML		 47void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
48
eb6ed20f
ML		 49static enum sp_return get_config(struct sp_port *port, struct port_data *data,
50 struct sp_port_config *config);
e33dcf90 51
eb6ed20f
ML		 52static enum sp_return set_config(struct sp_port *port, struct port_data *data,
53 const struct sp_port_config *config);
80186526 54
eb6ed20f 55enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 56{
57 struct sp_port *port;
a93fb468 58 enum sp_return ret;
5919c913 59 int len;
d54e9004 60
c33efc48
ML		 61 TRACE("%s, %p", portname, port_ptr);
62
32b5ac05 63 if (!port_ptr)
c33efc48 64 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 65
77f262c4
ML		 66 *port_ptr = NULL;
67
d4babed2 68 if (!portname)
c33efc48 69 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 70
ea667be7
ML		 71 DEBUG("Building structure for port %s", portname);
72
d54e9004 73 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 74 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 75
5919c913
ML		 76 len = strlen(portname) + 1;
77
eac329d2 78 if (!(port->name = malloc(len))) {
d54e9004 79 free(port);
c33efc48 80 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 81 }
82
83 memcpy(port->name, portname, len);
84
8f471c66
ML		 85#ifdef _WIN32
86 port->hdl = INVALID_HANDLE_VALUE;
87#else
88 port->fd = -1;
89#endif
90
e33dcf90
ML		 91 port->description = NULL;
92 port->transport = SP_TRANSPORT_NATIVE;
93 port->usb_bus = -1;
94 port->usb_address = -1;
95 port->usb_vid = -1;
96 port->usb_pid = -1;
97 port->usb_manufacturer = NULL;
98 port->usb_product = NULL;
99 port->usb_serial = NULL;
100 port->bluetooth_address = NULL;
101
e4ce975a 102#ifndef NO_PORT_METADATA
e33dcf90 103 if ((ret = get_port_details(port)) != SP_OK) {
a93fb468
AJ		 104 sp_free_port(port);
105 return ret;
106 }
e4ce975a 107#endif
a93fb468 108
77f262c4
ML		 109 *port_ptr = port;
110
c33efc48 111 RETURN_OK();
d54e9004
ML		 112}
113
1c5aae9d
ML		 114char *sp_get_port_name(const struct sp_port *port)
115{
116 TRACE("%p", port);
117
118 if (!port)
119 return NULL;
120
121 RETURN_VALUE("%s", port->name);
122}
123
a93fb468
AJ		 124char *sp_get_port_description(struct sp_port *port)
125{
126 TRACE("%p", port);
127
128 if (!port || !port->description)
129 return NULL;
130
131 RETURN_VALUE("%s", port->description);
132}
133
134enum sp_transport sp_get_port_transport(struct sp_port *port)
135{
136 TRACE("%p", port);
137
138 if (!port)
139 RETURN_ERROR(SP_ERR_ARG, "Null port");
140
141 RETURN_VALUE("%d", port->transport);
142}
143
144enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
145 int *usb_bus, int *usb_address)
146{
147 TRACE("%p", port);
148
149 if (!port)
150 RETURN_ERROR(SP_ERR_ARG, "Null port");
151 if (port->transport != SP_TRANSPORT_USB)
152 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 153 if (port->usb_bus < 0 || port->usb_address < 0)
154 RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
a93fb468
AJ		 155
156 if (usb_bus) *usb_bus = port->usb_bus;
157 if (usb_address) *usb_address = port->usb_address;
158
159 RETURN_OK();
160}
161
162enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
163 int *usb_vid, int *usb_pid)
164{
165 TRACE("%p", port);
166
167 if (!port)
168 RETURN_ERROR(SP_ERR_ARG, "Null port");
169 if (port->transport != SP_TRANSPORT_USB)
170 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 171 if (port->usb_vid < 0 || port->usb_pid < 0)
172 RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
a93fb468
AJ		 173
174 if (usb_vid) *usb_vid = port->usb_vid;
175 if (usb_pid) *usb_pid = port->usb_pid;
176
177 RETURN_OK();
178}
179
180char *sp_get_port_usb_manufacturer(const struct sp_port *port)
181{
182 TRACE("%p", port);
183
184 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
185 return NULL;
186
187 RETURN_VALUE("%s", port->usb_manufacturer);
188}
189
190char *sp_get_port_usb_product(const struct sp_port *port)
191{
192 TRACE("%p", port);
193
194 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
195 return NULL;
196
197 RETURN_VALUE("%s", port->usb_product);
198}
199
200char *sp_get_port_usb_serial(const struct sp_port *port)
201{
202 TRACE("%p", port);
203
204 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
205 return NULL;
206
207 RETURN_VALUE("%s", port->usb_serial);
208}
209
210char *sp_get_port_bluetooth_address(const struct sp_port *port)
211{
212 TRACE("%p", port);
213
214 if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
215 || !port->bluetooth_address)
216 return NULL;
217
218 RETURN_VALUE("%s", port->bluetooth_address);
219}
220
3c126654
ML		 221enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr)
222{
00d8c56d 223 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 224
225 if (!port)
226 RETURN_ERROR(SP_ERR_ARG, "Null port");
227
228#ifdef _WIN32
229 HANDLE *handle_ptr = result_ptr;
230 *handle_ptr = port->hdl;
231#else
232 int *fd_ptr = result_ptr;
233 *fd_ptr = port->fd;
234#endif
235
236 RETURN_OK();
237}
238
eb6ed20f 239enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr)
32b5ac05 240{
c33efc48
ML		 241 TRACE("%p, %p", port, copy_ptr);
242
32b5ac05 243 if (!copy_ptr)
c33efc48 244 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 245
246 *copy_ptr = NULL;
247
c33efc48
ML		 248 if (!port)
249 RETURN_ERROR(SP_ERR_ARG, "Null port");
250
251 if (!port->name)
252 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 253
ea667be7
ML		 254 DEBUG("Copying port structure");
255
c33efc48 256 RETURN_VALUE("%p", sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 257}
258
e3b2f7a4
ML		 259void sp_free_port(struct sp_port *port)
260{
c33efc48
ML		 261 TRACE("%p", port);
262
00d8c56d 263 if (!port) {
c33efc48
ML		 264 DEBUG("Null port");
265 RETURN();
266 }
e3b2f7a4 267
ea667be7
ML		 268 DEBUG("Freeing port structure");
269
e3b2f7a4
ML		 270 if (port->name)
271 free(port->name);
a93fb468
AJ		 272 if (port->description)
273 free(port->description);
274 if (port->usb_manufacturer)
275 free(port->usb_manufacturer);
276 if (port->usb_product)
277 free(port->usb_product);
278 if (port->usb_serial)
279 free(port->usb_serial);
280 if (port->bluetooth_address)
281 free(port->bluetooth_address);
282#ifdef _WIN32
283 if (port->usb_path)
284 free(port->usb_path);
285#endif
e3b2f7a4
ML		 286
287 free(port);
c33efc48
ML		 288
289 RETURN();
e3b2f7a4
ML		 290}
291
48a4076f 292struct sp_port **list_append(struct sp_port **list, const char *portname)
3b63f34d
ML		 293{
294 void *tmp;
295 unsigned int count;
f92f1f0c 296
3b63f34d 297 for (count = 0; list[count]; count++);
d54e9004 298 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 299 goto fail;
300 list = tmp;
77f262c4 301 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 302 goto fail;
db2794ce 303 list[count + 1] = NULL;
3b63f34d 304 return list;
f92f1f0c 305
3b63f34d
ML		 306fail:
307 sp_free_port_list(list);
308 return NULL;
309}
310
eb6ed20f 311enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 312{
d54e9004 313 struct sp_port **list;
48a4076f 314 int ret;
24c1a4bb 315
c33efc48
ML		 316 TRACE("%p", list_ptr);
317
dec10e31
ML		 318 if (!list_ptr)
319 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
320
ea667be7
ML		 321 DEBUG("Enumerating ports");
322
d54e9004 323 if (!(list = malloc(sizeof(struct sp_port **))))
c33efc48 324 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 325
326 list[0] = NULL;
3b63f34d 327
e4ce975a
ML		 328#ifdef NO_ENUMERATION
329 ret = SP_ERR_SUPP;
330#else
48a4076f 331 ret = list_ports(&list);
e4ce975a 332#endif
77f262c4 333
6b93ede4
ML		 334 switch (ret) {
335 case SP_OK:
77f262c4 336 *list_ptr = list;
c33efc48 337 RETURN_OK();
6b93ede4 338 case SP_ERR_SUPP:
9af8cff3 339 DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
6b93ede4 340 default:
77f262c4
ML		 341 if (list)
342 sp_free_port_list(list);
77f262c4 343 *list_ptr = NULL;
c33efc48 344 return ret;
77f262c4 345 }
3b63f34d
ML		 346}
347
d54e9004 348void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 349{
350 unsigned int i;
f92f1f0c 351
c33efc48
ML		 352 TRACE("%p", list);
353
dec10e31
ML		 354 if (!list) {
355 DEBUG("Null list");
356 RETURN();
357 }
358
ea667be7
ML		 359 DEBUG("Freeing port list");
360
3b63f34d 361 for (i = 0; list[i]; i++)
e3b2f7a4 362 sp_free_port(list[i]);
3b63f34d 363 free(list);
c33efc48
ML		 364
365 RETURN();
3b63f34d
ML		 366}
367
c33efc48
ML		 368#define CHECK_PORT() do { \
369 if (port == NULL) \
370 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dec10e31
ML		 371 if (port->name == NULL) \
372 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
373} while (0)
374#ifdef _WIN32
375#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 376 if (port->hdl == INVALID_HANDLE_VALUE) \
377 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 378} while (0)
74510d4b 379#else
dec10e31 380#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 381 if (port->fd < 0) \
382 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 383} while (0)
74510d4b 384#endif
dec10e31
ML		 385#define CHECK_OPEN_PORT() do { \
386 CHECK_PORT(); \
387 CHECK_PORT_HANDLE(); \
388} while (0)
74510d4b 389
eb6ed20f 390enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 391{
bccc7c9f
ML		 392 struct port_data data;
393 struct sp_port_config config;
394 enum sp_return ret;
395
00d8c56d 396 TRACE("%p, 0x%x", port, flags);
c33efc48 397
dec10e31
ML		 398 CHECK_PORT();
399
e3dcf906 400 if (flags > (SP_MODE_READ | SP_MODE_WRITE))
dec10e31 401 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 402
ea667be7
ML		 403 DEBUG("Opening port %s", port->name);
404
74510d4b 405#ifdef _WIN32
537942c9 406 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 407 char *escaped_port_name;
537942c9 408 COMSTAT status;
99945a1f
ML		 409
410 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 411 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 412 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 413 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
414
74510d4b 415 /* Map 'flags' to the OS-specific settings. */
e3dcf906 416 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 417 if (flags & SP_MODE_READ)
418 desired_access |= GENERIC_READ;
419 if (flags & SP_MODE_WRITE)
74510d4b 420 desired_access |= GENERIC_WRITE;
74510d4b 421
99945a1f 422 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 423 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 424
425 free(escaped_port_name);
426
74510d4b 427 if (port->hdl == INVALID_HANDLE_VALUE)
e3dcf906
ML		 428 RETURN_FAIL("port CreateFile() failed");
429
430 /* All timeouts initially disabled. */
431 port->timeouts.ReadIntervalTimeout = 0;
432 port->timeouts.ReadTotalTimeoutMultiplier = 0;
433 port->timeouts.ReadTotalTimeoutConstant = 0;
434 port->timeouts.WriteTotalTimeoutMultiplier = 0;
435 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 436
e3dcf906 437 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 438 sp_close(port);
439 RETURN_FAIL("SetCommTimeouts() failed");
440 }
e3dcf906
ML		 441
442 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 443#define INIT_OVERLAPPED(ovl) do { \
444 memset(&port->ovl, 0, sizeof(port->ovl)); \
445 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
446 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
447 == INVALID_HANDLE_VALUE) { \
448 sp_close(port); \
449 RETURN_FAIL(#ovl "CreateEvent() failed"); \
450 } \
451} while (0)
452
453 INIT_OVERLAPPED(read_ovl);
454 INIT_OVERLAPPED(write_ovl);
455 INIT_OVERLAPPED(wait_ovl);
456
457 /* Set event mask for RX and error events. */
458 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 459 sp_close(port);
6f1186aa 460 RETURN_FAIL("SetCommMask() failed");
e3dcf906 461 }
6f1186aa
ML		 462
463 /* Start background operation for RX and error events. */
464 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
465 if (GetLastError() != ERROR_IO_PENDING) {
466 sp_close(port);
467 RETURN_FAIL("WaitCommEvent() failed");
468 }
e3dcf906
ML		 469 }
470
471 port->writing = FALSE;
472
74510d4b 473#else
e3dcf906 474 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 475
74510d4b 476 /* Map 'flags' to the OS-specific settings. */
a036341b 477 if (flags & (SP_MODE_READ | SP_MODE_WRITE))
74510d4b 478 flags_local |= O_RDWR;
a036341b 479 else if (flags & SP_MODE_READ)
74510d4b 480 flags_local |= O_RDONLY;
a036341b
ML		 481 else if (flags & SP_MODE_WRITE)
482 flags_local |= O_WRONLY;
74510d4b
ML		 483
484 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 485 RETURN_FAIL("open() failed");
bccc7c9f 486#endif
9cb98459 487
e33ab9aa
ML		 488 ret = get_config(port, &data, &config);
489
eac329d2 490 if (ret < 0) {
e33ab9aa 491 sp_close(port);
c33efc48 492 RETURN_CODEVAL(ret);
e33ab9aa 493 }
9cb98459 494
bccc7c9f
ML		 495 /* Set sane port settings. */
496#ifdef _WIN32
497 data.dcb.fBinary = TRUE;
498 data.dcb.fDsrSensitivity = FALSE;
499 data.dcb.fErrorChar = FALSE;
500 data.dcb.fNull = FALSE;
501 data.dcb.fAbortOnError = TRUE;
502#else
b251be4b 503 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 504 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
505#ifdef IUCLC
506 data.term.c_iflag &= ~IUCLC;
507#endif
508 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
509#ifdef OLCUC
510 data.term.c_oflag &= ~OLCUC;
511#endif
512#ifdef NLDLY
513 data.term.c_oflag &= ~NLDLY;
514#endif
515#ifdef CRDLY
516 data.term.c_oflag &= ~CRDLY;
517#endif
518#ifdef TABDLY
519 data.term.c_oflag &= ~TABDLY;
520#endif
521#ifdef BSDLY
522 data.term.c_oflag &= ~BSDLY;
523#endif
524#ifdef VTDLY
525 data.term.c_oflag &= ~VTDLY;
526#endif
527#ifdef FFDLY
528 data.term.c_oflag &= ~FFDLY;
529#endif
b251be4b 530#ifdef OFILL
9cb98459
ML		 531 data.term.c_oflag &= ~OFILL;
532#endif
c3e05092 533 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 534 data.term.c_cc[VMIN] = 0;
b251be4b 535 data.term.c_cc[VTIME] = 0;
9cb98459 536
b251be4b
ML		 537 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
538 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 539#endif
9cb98459 540
537942c9 541#ifdef _WIN32
1a2a1544
UH		 542 if (ClearCommError(port->hdl, &errors, &status) == 0)
543 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 544#endif
545
e33ab9aa
ML		 546 ret = set_config(port, &data, &config);
547
eac329d2 548 if (ret < 0) {
e33ab9aa 549 sp_close(port);
c33efc48 550 RETURN_CODEVAL(ret);
e33ab9aa 551 }
74510d4b 552
c33efc48 553 RETURN_OK();
74510d4b
ML		 554}
555
eb6ed20f 556enum sp_return sp_close(struct sp_port *port)
74510d4b 557{
c33efc48
ML		 558 TRACE("%p", port);
559
dec10e31 560 CHECK_OPEN_PORT();
74510d4b 561
ea667be7
ML		 562 DEBUG("Closing port %s", port->name);
563
74510d4b
ML		 564#ifdef _WIN32
565 /* Returns non-zero upon success, 0 upon failure. */
566 if (CloseHandle(port->hdl) == 0)
e3dcf906 567 RETURN_FAIL("port CloseHandle() failed");
8f471c66 568 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 569
570 /* Close event handles for overlapped structures. */
571#define CLOSE_OVERLAPPED(ovl) do { \
572 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
573 CloseHandle(port->ovl.hEvent) == 0) \
574 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
575} while (0)
576 CLOSE_OVERLAPPED(read_ovl);
577 CLOSE_OVERLAPPED(write_ovl);
578 CLOSE_OVERLAPPED(wait_ovl);
579
74510d4b
ML		 580#else
581 /* Returns 0 upon success, -1 upon failure. */
582 if (close(port->fd) == -1)
c33efc48 583 RETURN_FAIL("close() failed");
8f471c66 584 port->fd = -1;
74510d4b
ML		 585#endif
586
c33efc48 587 RETURN_OK();
74510d4b
ML		 588}
589
fd8fd11a 590enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 591{
00d8c56d 592 TRACE("%p, 0x%x", port, buffers);
c33efc48 593
dec10e31
ML		 594 CHECK_OPEN_PORT();
595
596 if (buffers > SP_BUF_BOTH)
597 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 598
0ba3e49b 599 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7
ML		 600
601 DEBUG("Flushing %s buffers on port %s", buffer_names[buffers], port->name);
602
74510d4b 603#ifdef _WIN32
fd8fd11a
ML		 604 DWORD flags = 0;
605 if (buffers & SP_BUF_INPUT)
606 flags |= PURGE_RXCLEAR;
607 if (buffers & SP_BUF_OUTPUT)
608 flags |= PURGE_TXCLEAR;
609
74510d4b 610 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 611 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 612 RETURN_FAIL("PurgeComm() failed");
74510d4b 613#else
fd8fd11a
ML		 614 int flags = 0;
615 if (buffers & SP_BUF_BOTH)
616 flags = TCIOFLUSH;
617 else if (buffers & SP_BUF_INPUT)
618 flags = TCIFLUSH;
82f424e6 619 else if (buffers & SP_BUF_OUTPUT)
fd8fd11a
ML		 620 flags = TCOFLUSH;
621
74510d4b 622 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 623 if (tcflush(port->fd, flags) < 0)
c33efc48 624 RETURN_FAIL("tcflush() failed");
74510d4b 625#endif
c33efc48 626 RETURN_OK();
74510d4b
ML		 627}
628
69a3739c
ML		 629enum sp_return sp_drain(struct sp_port *port)
630{
c33efc48
ML		 631 TRACE("%p", port);
632
dec10e31 633 CHECK_OPEN_PORT();
69a3739c 634
ea667be7
ML		 635 DEBUG("Draining port %s", port->name);
636
69a3739c
ML		 637#ifdef _WIN32
638 /* Returns non-zero upon success, 0 upon failure. */
639 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 640 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 641 RETURN_OK();
69a3739c 642#else
2c827b21
ML		 643 int result;
644 while (1) {
33fd8804
ML		 645#ifdef __ANDROID__
646 int arg = 1;
647 result = ioctl(port->fd, TCSBRK, &arg);
648#else
2c827b21 649 result = tcdrain(port->fd);
33fd8804 650#endif
2c827b21
ML		 651 if (result < 0) {
652 if (errno == EINTR) {
653 DEBUG("tcdrain() was interrupted");
654 continue;
655 } else {
656 RETURN_FAIL("tcdrain() failed");
657 }
658 } else {
659 RETURN_OK();
660 }
661 }
69a3739c 662#endif
69a3739c
ML		 663}
664
e3dcf906
ML		 665enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, size_t count, unsigned int timeout)
666{
667 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
668
669 CHECK_OPEN_PORT();
670
671 if (!buf)
672 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
673
674 if (timeout)
675 DEBUG("Writing %d bytes to port %s, timeout %d ms", count, port->name, timeout);
676 else
677 DEBUG("Writing %d bytes to port %s, no timeout", count, port->name);
678
679 if (count == 0)
680 RETURN_VALUE("0", 0);
681
682#ifdef _WIN32
683 DWORD bytes_written = 0;
684 BOOL result;
685
686 /* Wait for previous non-blocking write to complete, if any. */
687 if (port->writing) {
688 DEBUG("Waiting for previous write to complete");
689 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
690 port->writing = 0;
691 if (!result)
692 RETURN_FAIL("Previous write failed to complete");
693 DEBUG("Previous write completed");
694 }
695
696 /* Set timeout. */
697 port->timeouts.WriteTotalTimeoutConstant = timeout;
698 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
699 RETURN_FAIL("SetCommTimeouts() failed");
700
701 /* Start write. */
702 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) {
703 if (GetLastError() == ERROR_IO_PENDING) {
704 DEBUG("Waiting for write to complete");
705 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
706 DEBUG("Write completed, %d/%d bytes written", bytes_written, count);
707 RETURN_VALUE("%d", bytes_written);
708 } else {
709 RETURN_FAIL("WriteFile() failed");
710 }
711 } else {
712 DEBUG("Write completed immediately");
713 RETURN_VALUE("%d", count);
714 }
715#else
716 size_t bytes_written = 0;
717 unsigned char *ptr = (unsigned char *) buf;
718 struct timeval start, delta, now, end = {0, 0};
719 fd_set fds;
720 int result;
721
722 if (timeout) {
723 /* Get time at start of operation. */
724 gettimeofday(&start, NULL);
725 /* Define duration of timeout. */
726 delta.tv_sec = timeout / 1000;
1b342042 727 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 728 /* Calculate time at which we should give up. */
729 timeradd(&start, &delta, &end);
730 }
731
732 /* Loop until we have written the requested number of bytes. */
733 while (bytes_written < count)
734 {
735 /* Wait until space is available. */
736 FD_ZERO(&fds);
737 FD_SET(port->fd, &fds);
738 if (timeout) {
739 gettimeofday(&now, NULL);
740 if (timercmp(&now, &end, >)) {
741 DEBUG("write timed out");
742 RETURN_VALUE("%d", bytes_written);
743 }
744 timersub(&end, &now, &delta);
745 }
746 result = select(port->fd + 1, NULL, &fds, NULL, timeout ? &delta : NULL);
63a17c64
ML		 747 if (result < 0) {
748 if (errno == EINTR) {
749 DEBUG("select() call was interrupted, repeating");
750 continue;
751 } else {
752 RETURN_FAIL("select() failed");
753 }
754 } else if (result == 0) {
e3dcf906
ML		 755 DEBUG("write timed out");
756 RETURN_VALUE("%d", bytes_written);
757 }
758
759 /* Do write. */
760 result = write(port->fd, ptr, count - bytes_written);
761
762 if (result < 0) {
763 if (errno == EAGAIN)
764 /* This shouldn't happen because we did a select() first, but handle anyway. */
765 continue;
766 else
767 /* This is an actual failure. */
768 RETURN_FAIL("write() failed");
769 }
770
771 bytes_written += result;
772 ptr += result;
773 }
774
775 RETURN_VALUE("%d", bytes_written);
776#endif
777}
778
779enum sp_return sp_nonblocking_write(struct sp_port *port, const void *buf, size_t count)
74510d4b 780{
c33efc48
ML		 781 TRACE("%p, %p, %d", port, buf, count);
782
dec10e31 783 CHECK_OPEN_PORT();
74510d4b
ML		 784
785 if (!buf)
c33efc48 786 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 787
ea667be7
ML		 788 DEBUG("Writing up to %d bytes to port %s", count, port->name);
789
a3cb91f5
ML		 790 if (count == 0)
791 RETURN_VALUE("0", 0);
792
74510d4b
ML		 793#ifdef _WIN32
794 DWORD written = 0;
0765af56 795 BYTE *ptr = (BYTE *) buf;
f92f1f0c 796
e3dcf906
ML		 797 /* Check whether previous write is complete. */
798 if (port->writing) {
799 if (HasOverlappedIoCompleted(&port->write_ovl)) {
800 DEBUG("Previous write completed");
801 port->writing = 0;
802 } else {
803 DEBUG("Previous write not complete");
804 /* Can't take a new write until the previous one finishes. */
805 RETURN_VALUE("0", 0);
a3cb91f5 806 }
e3dcf906 807 }
a3cb91f5 808
e3dcf906
ML		 809 /* Set timeout. */
810 port->timeouts.WriteTotalTimeoutConstant = 0;
811 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
812 RETURN_FAIL("SetCommTimeouts() failed");
813
814 /* Keep writing data until the OS has to actually start an async IO for it.
815 * At that point we know the buffer is full. */
816 while (written < count)
817 {
818 /* Copy first byte of user buffer. */
819 port->pending_byte = *ptr++;
820
821 /* Start asynchronous write. */
822 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
823 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 824 if (HasOverlappedIoCompleted(&port->write_ovl)) {
825 DEBUG("Asynchronous write completed immediately");
826 port->writing = 0;
827 written++;
828 continue;
829 } else {
830 DEBUG("Asynchronous write running");
831 port->writing = 1;
832 RETURN_VALUE("%d", ++written);
833 }
a3cb91f5 834 } else {
e3dcf906
ML		 835 /* Actual failure of some kind. */
836 RETURN_FAIL("WriteFile() failed");
a3cb91f5 837 }
e3dcf906 838 } else {
9af8cff3 839 DEBUG("Single byte written immediately");
e3dcf906 840 written++;
a3cb91f5
ML		 841 }
842 }
843
9af8cff3 844 DEBUG("All bytes written immediately");
e3dcf906 845
c33efc48 846 RETURN_VALUE("%d", written);
74510d4b
ML		 847#else
848 /* Returns the number of bytes written, or -1 upon failure. */
849 ssize_t written = write(port->fd, buf, count);
f92f1f0c 850
74510d4b 851 if (written < 0)
c33efc48 852 RETURN_FAIL("write() failed");
74510d4b 853 else
c33efc48 854 RETURN_VALUE("%d", written);
74510d4b
ML		 855#endif
856}
857
e3dcf906
ML		 858enum sp_return sp_blocking_read(struct sp_port *port, void *buf, size_t count, unsigned int timeout)
859{
860 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
861
862 CHECK_OPEN_PORT();
863
864 if (!buf)
865 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
866
867 if (timeout)
868 DEBUG("Reading %d bytes from port %s, timeout %d ms", count, port->name, timeout);
869 else
870 DEBUG("Reading %d bytes from port %s, no timeout", count, port->name);
871
872 if (count == 0)
873 RETURN_VALUE("0", 0);
874
875#ifdef _WIN32
876 DWORD bytes_read = 0;
877
878 /* Set timeout. */
879 port->timeouts.ReadIntervalTimeout = 0;
880 port->timeouts.ReadTotalTimeoutConstant = timeout;
881 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
882 RETURN_FAIL("SetCommTimeouts() failed");
883
884 /* Start read. */
885 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) {
886 if (GetLastError() == ERROR_IO_PENDING) {
887 DEBUG("Waiting for read to complete");
888 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
889 DEBUG("Read completed, %d/%d bytes read", bytes_read, count);
e3dcf906
ML		 890 } else {
891 RETURN_FAIL("ReadFile() failed");
892 }
893 } else {
894 DEBUG("Read completed immediately");
6f1186aa
ML		 895 bytes_read = count;
896 }
897
898 /* Start background operation for subsequent events. */
899 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
900 if (GetLastError() != ERROR_IO_PENDING)
901 RETURN_FAIL("WaitCommEvent() failed");
e3dcf906 902 }
6f1186aa
ML		 903
904 RETURN_VALUE("%d", bytes_read);
905
e3dcf906
ML		 906#else
907 size_t bytes_read = 0;
908 unsigned char *ptr = (unsigned char *) buf;
909 struct timeval start, delta, now, end = {0, 0};
910 fd_set fds;
911 int result;
912
913 if (timeout) {
914 /* Get time at start of operation. */
915 gettimeofday(&start, NULL);
916 /* Define duration of timeout. */
917 delta.tv_sec = timeout / 1000;
1b342042 918 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 919 /* Calculate time at which we should give up. */
920 timeradd(&start, &delta, &end);
921 }
922
923 /* Loop until we have the requested number of bytes. */
924 while (bytes_read < count)
925 {
926 /* Wait until data is available. */
927 FD_ZERO(&fds);
928 FD_SET(port->fd, &fds);
929 if (timeout) {
930 gettimeofday(&now, NULL);
931 if (timercmp(&now, &end, >))
932 /* Timeout has expired. */
933 RETURN_VALUE("%d", bytes_read);
934 timersub(&end, &now, &delta);
935 }
936 result = select(port->fd + 1, &fds, NULL, NULL, timeout ? &delta : NULL);
63a17c64
ML		 937 if (result < 0) {
938 if (errno == EINTR) {
939 DEBUG("select() call was interrupted, repeating");
940 continue;
941 } else {
942 RETURN_FAIL("select() failed");
943 }
944 } else if (result == 0) {
e3dcf906
ML		 945 DEBUG("read timed out");
946 RETURN_VALUE("%d", bytes_read);
947 }
948
949 /* Do read. */
950 result = read(port->fd, ptr, count - bytes_read);
951
952 if (result < 0) {
953 if (errno == EAGAIN)
954 /* This shouldn't happen because we did a select() first, but handle anyway. */
955 continue;
956 else
957 /* This is an actual failure. */
958 RETURN_FAIL("read() failed");
959 }
960
961 bytes_read += result;
962 ptr += result;
963 }
964
965 RETURN_VALUE("%d", bytes_read);
966#endif
967}
968
969enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf, size_t count)
74510d4b 970{
c33efc48
ML		 971 TRACE("%p, %p, %d", port, buf, count);
972
dec10e31 973 CHECK_OPEN_PORT();
74510d4b
ML		 974
975 if (!buf)
c33efc48 976 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 977
ea667be7
ML		 978 DEBUG("Reading up to %d bytes from port %s", count, port->name);
979
74510d4b 980#ifdef _WIN32
e3dcf906 981 DWORD bytes_read;
f92f1f0c 982
e3dcf906
ML		 983 /* Set timeout. */
984 port->timeouts.ReadIntervalTimeout = MAXDWORD;
985 port->timeouts.ReadTotalTimeoutConstant = 0;
986 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
987 RETURN_FAIL("SetCommTimeouts() failed");
988
989 /* Do read. */
990 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 991 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 992
993 /* Get number of bytes read. */
1622ef60
ML		 994 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
995 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 996
6f1186aa
ML		 997 if (bytes_read > 0) {
998 /* Start background operation for subsequent events. */
999 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
1000 if (GetLastError() != ERROR_IO_PENDING)
1001 RETURN_FAIL("WaitCommEvent() failed");
1002 }
1003 }
1004
c33efc48 1005 RETURN_VALUE("%d", bytes_read);
74510d4b
ML		 1006#else
1007 ssize_t bytes_read;
f92f1f0c 1008
74510d4b 1009 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1010 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1011 if (errno == EAGAIN)
1012 /* No bytes available. */
33d5ff47
ML		 1013 bytes_read = 0;
1014 else
1015 /* This is an actual failure. */
1016 RETURN_FAIL("read() failed");
1017 }
c33efc48 1018 RETURN_VALUE("%d", bytes_read);
74510d4b
ML		 1019#endif
1020}
1021
3353c22f
ML		 1022enum sp_return sp_input_waiting(struct sp_port *port)
1023{
1024 TRACE("%p", port);
1025
1026 CHECK_OPEN_PORT();
1027
1028 DEBUG("Checking input bytes waiting on port %s", port->name);
1029
1030#ifdef _WIN32
1031 DWORD errors;
1032 COMSTAT comstat;
1033
1034 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1035 RETURN_FAIL("ClearCommError() failed");
3353c22f
ML		 1036 RETURN_VALUE("%d", comstat.cbInQue);
1037#else
1038 int bytes_waiting;
1039 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1040 RETURN_FAIL("TIOCINQ ioctl failed");
1041 RETURN_VALUE("%d", bytes_waiting);
1042#endif
1043}
1044
1045enum sp_return sp_output_waiting(struct sp_port *port)
1046{
1047 TRACE("%p", port);
1048
1049 CHECK_OPEN_PORT();
1050
1051 DEBUG("Checking output bytes waiting on port %s", port->name);
1052
1053#ifdef _WIN32
1054 DWORD errors;
1055 COMSTAT comstat;
1056
1057 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1058 RETURN_FAIL("ClearCommError() failed");
3353c22f
ML		 1059 RETURN_VALUE("%d", comstat.cbOutQue);
1060#else
1061 int bytes_waiting;
1062 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1063 RETURN_FAIL("TIOCOUTQ ioctl failed");
1064 RETURN_VALUE("%d", bytes_waiting);
1065#endif
1066}
1067
6f1186aa
ML		 1068enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
1069{
1070 struct sp_event_set *result;
1071
1072 TRACE("%p", result_ptr);
1073
1074 if (!result_ptr)
1075 RETURN_ERROR(SP_ERR_ARG, "Null result");
1076
1077 *result_ptr = NULL;
1078
1079 if (!(result = malloc(sizeof(struct sp_event_set))))
1080 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1081
1082 memset(result, 0, sizeof(struct sp_event_set));
1083
1084 *result_ptr = result;
1085
1086 RETURN_OK();
1087}
1088
1089static enum sp_return add_handle(struct sp_event_set *event_set,
1090 event_handle handle, enum sp_event mask)
1091{
1092 void *new_handles;
1093 enum sp_event *new_masks;
1094
1095 TRACE("%p, %d, %d", event_set, handle, mask);
1096
1097 if (!(new_handles = realloc(event_set->handles,
1098 sizeof(event_handle) * (event_set->count + 1))))
1099 RETURN_ERROR(SP_ERR_MEM, "handle array realloc() failed");
1100
1101 if (!(new_masks = realloc(event_set->masks,
1102 sizeof(enum sp_event) * (event_set->count + 1))))
1103 RETURN_ERROR(SP_ERR_MEM, "mask array realloc() failed");
1104
1105 event_set->handles = new_handles;
1106 event_set->masks = new_masks;
1107
1108 ((event_handle *) event_set->handles)[event_set->count] = handle;
1109 event_set->masks[event_set->count] = mask;
1110
1111 event_set->count++;
1112
1113 RETURN_OK();
1114}
1115
1116enum sp_return sp_add_port_events(struct sp_event_set *event_set,
1117 const struct sp_port *port, enum sp_event mask)
1118{
1119 TRACE("%p, %p, %d", event_set, port, mask);
1120
1121 if (!event_set)
1122 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1123
1124 if (!port)
1125 RETURN_ERROR(SP_ERR_ARG, "Null port");
1126
1127 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1128 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1129
1130 if (!mask)
1131 RETURN_OK();
1132
1133#ifdef _WIN32
1134 enum sp_event handle_mask;
1135 if ((handle_mask = mask & SP_EVENT_TX_READY))
1136 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1137 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1138 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1139#else
1140 TRY(add_handle(event_set, port->fd, mask));
1141#endif
1142
1143 RETURN_OK();
1144}
1145
1146void sp_free_event_set(struct sp_event_set *event_set)
1147{
1148 TRACE("%p", event_set);
1149
1150 if (!event_set) {
1151 DEBUG("Null event set");
1152 RETURN();
1153 }
1154
1155 DEBUG("Freeing event set");
1156
1157 if (event_set->handles)
1158 free(event_set->handles);
1159 if (event_set->masks)
1160 free(event_set->masks);
1161
1162 free(event_set);
1163
1164 RETURN();
1165}
1166
1167enum sp_return sp_wait(struct sp_event_set *event_set, unsigned int timeout)
1168{
1169 TRACE("%p, %d", event_set, timeout);
1170
1171 if (!event_set)
1172 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1173
1174#ifdef _WIN32
1175 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1176 timeout ? timeout : INFINITE) == WAIT_FAILED)
1177 RETURN_FAIL("WaitForMultipleObjects() failed");
1178
1179 RETURN_OK();
1180#else
1181 struct timeval start, delta, now, end = {0, 0};
1182 int result, timeout_remaining;
1183 struct pollfd *pollfds;
1184 unsigned int i;
1185
1186 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1187 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1188
1189 for (i = 0; i < event_set->count; i++) {
1190 pollfds[i].fd = ((int *) event_set->handles)[i];
1191 pollfds[i].events = 0;
1192 pollfds[i].revents = 0;
1193 if (event_set->masks[i] & SP_EVENT_RX_READY)
1194 pollfds[i].events |= POLLIN;
1195 if (event_set->masks[i] & SP_EVENT_TX_READY)
1196 pollfds[i].events |= POLLOUT;
1197 if (event_set->masks[i] & SP_EVENT_ERROR)
1198 pollfds[i].events |= POLLERR;
1199 }
1200
1201 if (timeout) {
1202 /* Get time at start of operation. */
1203 gettimeofday(&start, NULL);
1204 /* Define duration of timeout. */
1205 delta.tv_sec = timeout / 1000;
1206 delta.tv_usec = (timeout % 1000) * 1000;
1207 /* Calculate time at which we should give up. */
1208 timeradd(&start, &delta, &end);
1209 }
1210
1211 /* Loop until an event occurs. */
1212 while (1)
1213 {
1214 if (timeout) {
1215 gettimeofday(&now, NULL);
1216 if (timercmp(&now, &end, >)) {
1217 DEBUG("wait timed out");
1218 break;
1219 }
1220 timersub(&end, &now, &delta);
1221 timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000;
1222 }
1223
1224 result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1);
1225
1226 if (result < 0) {
1227 if (errno == EINTR) {
1228 DEBUG("poll() call was interrupted, repeating");
1229 continue;
1230 } else {
1231 free(pollfds);
1232 RETURN_FAIL("poll() failed");
1233 }
1234 } else if (result == 0) {
1235 DEBUG("poll() timed out");
1236 break;
1237 } else {
1238 DEBUG("poll() completed");
1239 break;
1240 }
1241 }
1242
1243 free(pollfds);
1244 RETURN_OK();
1245#endif
1246}
1247
5cea279a 1248#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1249static enum sp_return get_baudrate(int fd, int *baudrate)
1250{
1251 void *data;
1252
c33efc48
ML		 1253 TRACE("%d, %p", fd, baudrate);
1254
ea667be7
ML		 1255 DEBUG("Getting baud rate");
1256
7a6d2196 1257 if (!(data = malloc(get_termios_size())))
c33efc48 1258 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1259
8d43110a
ML		 1260 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1261 free(data);
c33efc48 1262 RETURN_FAIL("getting termios failed");
8d43110a 1263 }
7a6d2196
ML		 1264
1265 *baudrate = get_termios_speed(data);
1266
8d43110a
ML		 1267 free(data);
1268
c33efc48 1269 RETURN_OK();
7a6d2196
ML		 1270}
1271
1272static enum sp_return set_baudrate(int fd, int baudrate)
1273{
1274 void *data;
1275
c33efc48
ML		 1276 TRACE("%d, %d", fd, baudrate);
1277
ea667be7
ML		 1278 DEBUG("Getting baud rate");
1279
7a6d2196 1280 if (!(data = malloc(get_termios_size())))
c33efc48 1281 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1282
8d43110a
ML		 1283 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1284 free(data);
c33efc48 1285 RETURN_FAIL("getting termios failed");
8d43110a 1286 }
7a6d2196 1287
ea667be7
ML		 1288 DEBUG("Setting baud rate");
1289
7a6d2196
ML		 1290 set_termios_speed(data, baudrate);
1291
8d43110a
ML		 1292 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1293 free(data);
c33efc48 1294 RETURN_FAIL("setting termios failed");
8d43110a
ML		 1295 }
1296
1297 free(data);
7a6d2196 1298
c33efc48 1299 RETURN_OK();
7a6d2196 1300}
5cea279a 1301#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1302
1303#ifdef USE_TERMIOX
bd791fe1 1304static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1305{
bd791fe1 1306 void *termx;
40978c2b 1307
bd791fe1 1308 TRACE("%d, %p", fd, data);
c33efc48 1309
ea667be7
ML		 1310 DEBUG("Getting advanced flow control");
1311
bd791fe1 1312 if (!(termx = malloc(get_termiox_size())))
c33efc48 1313 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1314
bd791fe1
ML		 1315 if (ioctl(fd, TCGETX, termx) < 0) {
1316 free(termx);
c33efc48 1317 RETURN_FAIL("getting termiox failed");
8d43110a 1318 }
40978c2b 1319
bd791fe1
ML		 1320 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1321 &data->dtr_flow, &data->dsr_flow);
40978c2b 1322
bd791fe1 1323 free(termx);
8d43110a 1324
c33efc48 1325 RETURN_OK();
40978c2b
ML		 1326}
1327
bd791fe1 1328static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1329{
bd791fe1 1330 void *termx;
40978c2b 1331
bd791fe1 1332 TRACE("%d, %p", fd, data);
c33efc48 1333
ea667be7
ML		 1334 DEBUG("Getting advanced flow control");
1335
bd791fe1 1336 if (!(termx = malloc(get_termiox_size())))
c33efc48 1337 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1338
bd791fe1
ML		 1339 if (ioctl(fd, TCGETX, termx) < 0) {
1340 free(termx);
c33efc48 1341 RETURN_FAIL("getting termiox failed");
8d43110a 1342 }
40978c2b 1343
ea667be7
ML		 1344 DEBUG("Setting advanced flow control");
1345
bd791fe1
ML		 1346 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1347 data->dtr_flow, data->dsr_flow);
40978c2b 1348
bd791fe1
ML		 1349 if (ioctl(fd, TCSETX, termx) < 0) {
1350 free(termx);
c33efc48 1351 RETURN_FAIL("setting termiox failed");
8d43110a
ML		 1352 }
1353
bd791fe1 1354 free(termx);
40978c2b 1355
c33efc48 1356 RETURN_OK();
40978c2b
ML		 1357}
1358#endif /* USE_TERMIOX */
7a6d2196 1359
eb6ed20f
ML		 1360static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1361 struct sp_port_config *config)
8094e4a0 1362{
da2748bf 1363 unsigned int i;
cbf628c7 1364
c33efc48
ML		 1365 TRACE("%p, %p, %p", port, data, config);
1366
ea667be7
ML		 1367 DEBUG("Getting configuration for port %s", port->name);
1368
8094e4a0 1369#ifdef _WIN32
e33ab9aa 1370 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1371 RETURN_FAIL("GetCommState() failed");
8094e4a0 1372
067417af 1373 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1374 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1375 config->baudrate = std_baudrates[i].value;
1376 break;
1377 }
1378 }
1379
1380 if (i == NUM_STD_BAUDRATES)
1381 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1382 config->baudrate = data->dcb.BaudRate;
067417af 1383
e33ab9aa 1384 config->bits = data->dcb.ByteSize;
067417af 1385
e33ab9aa
ML		 1386 if (data->dcb.fParity)
1387 switch (data->dcb.Parity) {
067417af
ML		 1388 case NOPARITY:
1389 config->parity = SP_PARITY_NONE;
1390 break;
e432ce60
ML		 1391 case ODDPARITY:
1392 config->parity = SP_PARITY_ODD;
1393 break;
067417af
ML		 1394 case EVENPARITY:
1395 config->parity = SP_PARITY_EVEN;
1396 break;
e432ce60
ML		 1397 case MARKPARITY:
1398 config->parity = SP_PARITY_MARK;
1399 break;
1400 case SPACEPARITY:
1401 config->parity = SP_PARITY_SPACE;
067417af
ML		 1402 break;
1403 default:
1404 config->parity = -1;
1405 }
1406 else
1407 config->parity = SP_PARITY_NONE;
1408
e33ab9aa 1409 switch (data->dcb.StopBits) {
067417af
ML		 1410 case ONESTOPBIT:
1411 config->stopbits = 1;
1412 break;
1413 case TWOSTOPBITS:
1414 config->stopbits = 2;
1415 break;
1416 default:
1417 config->stopbits = -1;
1418 }
1419
e33ab9aa 1420 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1421 case RTS_CONTROL_DISABLE:
1422 config->rts = SP_RTS_OFF;
1423 break;
1424 case RTS_CONTROL_ENABLE:
1425 config->rts = SP_RTS_ON;
1426 break;
1427 case RTS_CONTROL_HANDSHAKE:
1428 config->rts = SP_RTS_FLOW_CONTROL;
1429 break;
1430 default:
1431 config->rts = -1;
067417af
ML		 1432 }
1433
e33ab9aa 1434 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1435
e33ab9aa 1436 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1437 case DTR_CONTROL_DISABLE:
1438 config->dtr = SP_DTR_OFF;
1439 break;
1440 case DTR_CONTROL_ENABLE:
1441 config->dtr = SP_DTR_ON;
1442 break;
1443 case DTR_CONTROL_HANDSHAKE:
1444 config->dtr = SP_DTR_FLOW_CONTROL;
1445 break;
1446 default:
1447 config->dtr = -1;
067417af
ML		 1448 }
1449
e33ab9aa
ML		 1450 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1451
c6754b45
ML		 1452 if (data->dcb.fInX) {
1453 if (data->dcb.fOutX)
1454 config->xon_xoff = SP_XONXOFF_INOUT;
1455 else
1456 config->xon_xoff = SP_XONXOFF_IN;
1457 } else {
1458 if (data->dcb.fOutX)
1459 config->xon_xoff = SP_XONXOFF_OUT;
1460 else
1461 config->xon_xoff = SP_XONXOFF_DISABLED;
1462 }
1463
e33ab9aa
ML		 1464#else // !_WIN32
1465
1466 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1467 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1468
1469 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1470 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1471
1472#ifdef USE_TERMIOX
bd791fe1 1473 int ret = get_flow(port->fd, data);
68ec29db
ML		 1474
1475 if (ret == SP_ERR_FAIL && errno == EINVAL)
1476 data->termiox_supported = 0;
1477 else if (ret < 0)
c33efc48 1478 RETURN_CODEVAL(ret);
68ec29db
ML		 1479 else
1480 data->termiox_supported = 1;
1481#else
1482 data->termiox_supported = 0;
40978c2b
ML		 1483#endif
1484
067417af 1485 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1486 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1487 config->baudrate = std_baudrates[i].value;
1488 break;
1489 }
1490 }
1491
31b3a8f5
MH		 1492 if (i == NUM_STD_BAUDRATES) {
1493#ifdef __APPLE__
1494 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1495#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1496 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1497#else
067417af 1498 config->baudrate = -1;
31b3a8f5
MH		 1499#endif
1500 }
067417af 1501
e33ab9aa 1502 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1503 case CS8:
1504 config->bits = 8;
1505 break;
1506 case CS7:
1507 config->bits = 7;
1508 break;
1509 case CS6:
1510 config->bits = 6;
1511 break;
1512 case CS5:
1513 config->bits = 5;
1514 break;
1515 default:
1516 config->bits = -1;
1517 }
1518
e33ab9aa 1519 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1520 config->parity = SP_PARITY_NONE;
e33ab9aa 1521 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1522 config->parity = -1;
c3e05092 1523#ifdef CMSPAR
e432ce60
ML		 1524 else if (data->term.c_cflag & CMSPAR)
1525 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1526#endif
067417af 1527 else
e33ab9aa 1528 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1529
e33ab9aa 1530 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1531
e33ab9aa 1532 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1533 config->rts = SP_RTS_FLOW_CONTROL;
1534 config->cts = SP_CTS_FLOW_CONTROL;
1535 } else {
bd791fe1 1536 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1537 config->rts = SP_RTS_FLOW_CONTROL;
1538 else
1539 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1540
bd791fe1 1541 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1542 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1543 }
1544
bd791fe1 1545 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1546 config->dtr = SP_DTR_FLOW_CONTROL;
1547 else
1548 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1549
bd791fe1 1550 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1551 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1552
e29b93a5
ML		 1553 if (data->term.c_iflag & IXOFF) {
1554 if (data->term.c_iflag & IXON)
1555 config->xon_xoff = SP_XONXOFF_INOUT;
1556 else
1557 config->xon_xoff = SP_XONXOFF_IN;
1558 } else {
1559 if (data->term.c_iflag & IXON)
1560 config->xon_xoff = SP_XONXOFF_OUT;
1561 else
1562 config->xon_xoff = SP_XONXOFF_DISABLED;
1563 }
067417af
ML		 1564#endif
1565
c33efc48 1566 RETURN_OK();
067417af
ML		 1567}
1568
7a6d2196 1569static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1570 const struct sp_port_config *config)
18fc2dd1 1571{
e33ab9aa 1572 unsigned int i;
31b3a8f5
MH		 1573#ifdef __APPLE__
1574 BAUD_TYPE baud_nonstd;
1575
1576 baud_nonstd = B0;
1577#endif
5cea279a 1578#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1579 int baud_nonstd = 0;
1580#endif
18fc2dd1 1581
c33efc48
ML		 1582 TRACE("%p, %p, %p", port, data, config);
1583
ea667be7
ML		 1584 DEBUG("Setting configuration for port %s", port->name);
1585
e33ab9aa 1586#ifdef _WIN32
eac329d2 1587 if (config->baudrate >= 0) {
e33ab9aa
ML		 1588 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1589 if (config->baudrate == std_baudrates[i].value) {
1590 data->dcb.BaudRate = std_baudrates[i].index;
1591 break;
1592 }
1593 }
18fc2dd1 1594
e33ab9aa
ML		 1595 if (i == NUM_STD_BAUDRATES)
1596 data->dcb.BaudRate = config->baudrate;
1597 }
18fc2dd1 1598
e33ab9aa
ML		 1599 if (config->bits >= 0)
1600 data->dcb.ByteSize = config->bits;
1601
1602 if (config->parity >= 0) {
1603 switch (config->parity) {
e33ab9aa
ML		 1604 case SP_PARITY_NONE:
1605 data->dcb.Parity = NOPARITY;
1606 break;
e432ce60
ML		 1607 case SP_PARITY_ODD:
1608 data->dcb.Parity = ODDPARITY;
1609 break;
e33ab9aa
ML		 1610 case SP_PARITY_EVEN:
1611 data->dcb.Parity = EVENPARITY;
1612 break;
e432ce60
ML		 1613 case SP_PARITY_MARK:
1614 data->dcb.Parity = MARKPARITY;
1615 break;
1616 case SP_PARITY_SPACE:
1617 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1618 break;
1619 default:
c33efc48 1620 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1621 }
18fc2dd1
ML		 1622 }
1623
e33ab9aa
ML		 1624 if (config->stopbits >= 0) {
1625 switch (config->stopbits) {
1626 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1627 case 1:
1628 data->dcb.StopBits = ONESTOPBIT;
1629 break;
1630 case 2:
1631 data->dcb.StopBits = TWOSTOPBITS;
1632 break;
1633 default:
c33efc48 1634 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1635 }
1636 }
1637
1638 if (config->rts >= 0) {
1639 switch (config->rts) {
1640 case SP_RTS_OFF:
1641 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1642 break;
1643 case SP_RTS_ON:
1644 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1645 break;
1646 case SP_RTS_FLOW_CONTROL:
1647 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1648 break;
1649 default:
c33efc48 1650 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1651 }
1652 }
1653
1654 if (config->cts >= 0) {
1655 switch (config->cts) {
1656 case SP_CTS_IGNORE:
1657 data->dcb.fOutxCtsFlow = FALSE;
1658 break;
1659 case SP_CTS_FLOW_CONTROL:
1660 data->dcb.fOutxCtsFlow = TRUE;
1661 break;
1662 default:
c33efc48 1663 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1664 }
1665 }
1666
1667 if (config->dtr >= 0) {
1668 switch (config->dtr) {
1669 case SP_DTR_OFF:
1670 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1671 break;
1672 case SP_DTR_ON:
1673 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1674 break;
1675 case SP_DTR_FLOW_CONTROL:
1676 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1677 break;
1678 default:
c33efc48 1679 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1680 }
1681 }
1682
1683 if (config->dsr >= 0) {
1684 switch (config->dsr) {
1685 case SP_DSR_IGNORE:
1686 data->dcb.fOutxDsrFlow = FALSE;
1687 break;
1688 case SP_DSR_FLOW_CONTROL:
1689 data->dcb.fOutxDsrFlow = TRUE;
1690 break;
1691 default:
c33efc48 1692 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1693 }
18fc2dd1
ML		 1694 }
1695
e33ab9aa
ML		 1696 if (config->xon_xoff >= 0) {
1697 switch (config->xon_xoff) {
1698 case SP_XONXOFF_DISABLED:
1699 data->dcb.fInX = FALSE;
1700 data->dcb.fOutX = FALSE;
1701 break;
1702 case SP_XONXOFF_IN:
1703 data->dcb.fInX = TRUE;
1704 data->dcb.fOutX = FALSE;
1705 break;
1706 case SP_XONXOFF_OUT:
1707 data->dcb.fInX = FALSE;
1708 data->dcb.fOutX = TRUE;
1709 break;
1710 case SP_XONXOFF_INOUT:
1711 data->dcb.fInX = TRUE;
1712 data->dcb.fOutX = TRUE;
1713 break;
1714 default:
c33efc48 1715 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1716 }
1717 }
1718
1719 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1720 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1721
31b3a8f5 1722#else /* !_WIN32 */
e33ab9aa 1723
7a6d2196
ML		 1724 int controlbits;
1725
eac329d2 1726 if (config->baudrate >= 0) {
e33ab9aa
ML		 1727 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1728 if (config->baudrate == std_baudrates[i].value) {
1729 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1730 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1731
1732 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1733 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1734 break;
1735 }
1736 }
1737
31b3a8f5
MH		 1738 /* Non-standard baud rate */
1739 if (i == NUM_STD_BAUDRATES) {
1740#ifdef __APPLE__
24abdb68 1741 /* Set "dummy" baud rate. */
31b3a8f5 1742 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1743 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1744 baud_nonstd = config->baudrate;
5cea279a 1745#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1746 baud_nonstd = 1;
31b3a8f5 1747#else
c33efc48 1748 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1749#endif
1750 }
e33ab9aa
ML		 1751 }
1752
1753 if (config->bits >= 0) {
1754 data->term.c_cflag &= ~CSIZE;
1755 switch (config->bits) {
1756 case 8:
1757 data->term.c_cflag |= CS8;
1758 break;
1759 case 7:
1760 data->term.c_cflag |= CS7;
1761 break;
1762 case 6:
1763 data->term.c_cflag |= CS6;
1764 break;
23922313
UH		 1765 case 5:
1766 data->term.c_cflag |= CS5;
1767 break;
e33ab9aa 1768 default:
c33efc48 1769 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1770 }
1771 }
1772
1773 if (config->parity >= 0) {
1774 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1775 data->term.c_cflag &= ~(PARENB | PARODD);
1776#ifdef CMSPAR
1777 data->term.c_cflag &= ~CMSPAR;
1778#endif
e33ab9aa
ML		 1779 switch (config->parity) {
1780 case SP_PARITY_NONE:
1781 data->term.c_iflag |= IGNPAR;
1782 break;
1783 case SP_PARITY_EVEN:
1784 data->term.c_cflag |= PARENB;
1785 break;
1786 case SP_PARITY_ODD:
1787 data->term.c_cflag |= PARENB | PARODD;
1788 break;
afb518f0 1789#ifdef CMSPAR
e432ce60 1790 case SP_PARITY_MARK:
c3e05092 1791 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1792 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1793 break;
1794 case SP_PARITY_SPACE:
c3e05092 1795 data->term.c_cflag |= PARENB;
c3e05092 1796 data->term.c_cflag |= CMSPAR;
e432ce60 1797 break;
afb518f0
ML		 1798#else
1799 case SP_PARITY_MARK:
1800 case SP_PARITY_SPACE:
1801 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1802#endif
e33ab9aa 1803 default:
c33efc48 1804 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1805 }
1806 }
1807
1808 if (config->stopbits >= 0) {
1809 data->term.c_cflag &= ~CSTOPB;
1810 switch (config->stopbits) {
1811 case 1:
1812 data->term.c_cflag &= ~CSTOPB;
1813 break;
1814 case 2:
1815 data->term.c_cflag |= CSTOPB;
1816 break;
1817 default:
c33efc48 1818 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1819 }
1820 }
1821
eac329d2 1822 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1823 if (data->termiox_supported) {
bd791fe1 1824 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1825 switch (config->rts) {
1826 case SP_RTS_OFF:
1827 case SP_RTS_ON:
1828 controlbits = TIOCM_RTS;
1829 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1830 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1831 break;
1832 case SP_RTS_FLOW_CONTROL:
bd791fe1 1833 data->rts_flow = 1;
68ec29db
ML		 1834 break;
1835 default:
1836 break;
e33ab9aa 1837 }
68ec29db 1838 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1839 data->cts_flow = 1;
e33ab9aa 1840
bd791fe1 1841 if (data->rts_flow && data->cts_flow)
e33ab9aa 1842 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1843 else
1844 data->term.c_iflag &= ~CRTSCTS;
1845 } else {
1846 /* Asymmetric use of RTS/CTS not supported. */
1847 if (data->term.c_iflag & CRTSCTS) {
1848 /* Flow control can only be disabled for both RTS & CTS together. */
1849 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1850 if (config->cts != SP_CTS_IGNORE)
c33efc48 1851 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1852 }
1853 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1854 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1855 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1856 }
e33ab9aa 1857 } else {
68ec29db
ML		 1858 /* Flow control can only be enabled for both RTS & CTS together. */
1859 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1860 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1861 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1862 }
1863
1864 if (config->rts >= 0) {
1865 if (config->rts == SP_RTS_FLOW_CONTROL) {
1866 data->term.c_iflag |= CRTSCTS;
1867 } else {
1868 controlbits = TIOCM_RTS;
1869 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1870 &controlbits) < 0)
c33efc48 1871 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1872 }
e33ab9aa
ML		 1873 }
1874 }
1875 }
1876
eac329d2 1877 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1878 if (data->termiox_supported) {
bd791fe1 1879 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1880 switch (config->dtr) {
1881 case SP_DTR_OFF:
1882 case SP_DTR_ON:
1883 controlbits = TIOCM_DTR;
1884 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1885 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1886 break;
1887 case SP_DTR_FLOW_CONTROL:
bd791fe1 1888 data->dtr_flow = 1;
68ec29db
ML		 1889 break;
1890 default:
1891 break;
1892 }
1893 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 1894 data->dsr_flow = 1;
68ec29db
ML		 1895 } else {
1896 /* DTR/DSR flow control not supported. */
1897 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 1898 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 1899
68ec29db
ML		 1900 if (config->dtr >= 0) {
1901 controlbits = TIOCM_DTR;
1902 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
1903 &controlbits) < 0)
c33efc48 1904 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 1905 }
e33ab9aa
ML		 1906 }
1907 }
1908
1909 if (config->xon_xoff >= 0) {
1910 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
1911 switch (config->xon_xoff) {
1912 case SP_XONXOFF_DISABLED:
1913 break;
1914 case SP_XONXOFF_IN:
1915 data->term.c_iflag |= IXOFF;
1916 break;
1917 case SP_XONXOFF_OUT:
1918 data->term.c_iflag |= IXON | IXANY;
1919 break;
1920 case SP_XONXOFF_INOUT:
1921 data->term.c_iflag |= IXON | IXOFF | IXANY;
1922 break;
1923 default:
c33efc48 1924 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1925 }
1926 }
1927
3f5c06d0 1928 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 1929 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 1930
1931#ifdef __APPLE__
1932 if (baud_nonstd != B0) {
1933 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 1934 RETURN_FAIL("IOSSIOSPEED ioctl failed");
31b3a8f5
MH		 1935 /* Set baud rates in data->term to correct, but incompatible
1936 * with tcsetattr() value, same as delivered by tcgetattr(). */
1937 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 1938 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1939 }
7a6d2196 1940#elif defined(__linux__)
5cea279a 1941#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1942 if (baud_nonstd)
1943 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 1944#endif
40978c2b 1945#ifdef USE_TERMIOX
68ec29db 1946 if (data->termiox_supported)
bd791fe1 1947 TRY(set_flow(port->fd, data));
40978c2b 1948#endif
7a6d2196 1949#endif
31b3a8f5
MH		 1950
1951#endif /* !_WIN32 */
e33ab9aa 1952
c33efc48 1953 RETURN_OK();
e33ab9aa
ML		 1954}
1955
9b1502ef
ML		 1956enum sp_return sp_new_config(struct sp_port_config **config_ptr)
1957{
59131d60 1958 struct sp_port_config *config;
9b1502ef 1959
00d8c56d
UH		 1960 TRACE("%p", config_ptr);
1961
9b1502ef
ML		 1962 if (!config_ptr)
1963 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
1964
59131d60
ML		 1965 *config_ptr = NULL;
1966
1967 if (!(config = malloc(sizeof(struct sp_port_config))))
9b1502ef
ML		 1968 RETURN_ERROR(SP_ERR_MEM, "config malloc failed");
1969
59131d60
ML		 1970 config->baudrate = -1;
1971 config->bits = -1;
1972 config->parity = -1;
1973 config->stopbits = -1;
1974 config->rts = -1;
1975 config->cts = -1;
1976 config->dtr = -1;
1977 config->dsr = -1;
1978
1979 *config_ptr = config;
1980
9b1502ef
ML		 1981 RETURN_OK();
1982}
1983
1984void sp_free_config(struct sp_port_config *config)
1985{
1986 TRACE("%p", config);
1987
1988 if (!config)
1989 DEBUG("Null config");
1990 else
1991 free(config);
1992
1993 RETURN();
1994}
1995
70cd37de
ML		 1996enum sp_return sp_get_config(struct sp_port *port, struct sp_port_config *config)
1997{
1998 struct port_data data;
1999
2000 TRACE("%p, %p", port, config);
2001
2002 CHECK_OPEN_PORT();
2003
2004 if (!config)
9b1502ef 2005 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2006
2007 TRY(get_config(port, &data, config));
2008
2009 RETURN_OK();
2010}
2011
eb6ed20f 2012enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config)
e33ab9aa 2013{
8f189c4c 2014 struct port_data data;
e33ab9aa
ML		 2015 struct sp_port_config prev_config;
2016
c33efc48
ML		 2017 TRACE("%p, %p", port, config);
2018
dec10e31 2019 CHECK_OPEN_PORT();
823690ae
ML		 2020
2021 if (!config)
c33efc48 2022 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2023
e33ab9aa
ML		 2024 TRY(get_config(port, &data, &prev_config));
2025 TRY(set_config(port, &data, config));
74510d4b 2026
c33efc48 2027 RETURN_OK();
74510d4b
ML		 2028}
2029
9b1502ef
ML		 2030#define CREATE_ACCESSORS(x, type) \
2031enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2032 struct port_data data; \
e33ab9aa 2033 struct sp_port_config config; \
c33efc48 2034 TRACE("%p, %d", port, x); \
dec10e31 2035 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2036 TRY(get_config(port, &data, &config)); \
2037 config.x = x; \
2038 TRY(set_config(port, &data, &config)); \
c33efc48 2039 RETURN_OK(); \
9b1502ef
ML		 2040} \
2041enum sp_return sp_get_config_##x(const struct sp_port_config *config, type *x) { \
00d8c56d 2042 TRACE("%p, %p", config, x); \
9b1502ef
ML		 2043 if (!config) \
2044 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2045 *x = config->x; \
2046 RETURN_OK(); \
2047} \
2048enum sp_return sp_set_config_##x(struct sp_port_config *config, type x) { \
2049 TRACE("%p, %d", config, x); \
2050 if (!config) \
2051 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2052 config->x = x; \
2053 RETURN_OK(); \
9069c2fb
ML		 2054}
2055
9b1502ef
ML		 2056CREATE_ACCESSORS(baudrate, int)
2057CREATE_ACCESSORS(bits, int)
2058CREATE_ACCESSORS(parity, enum sp_parity)
2059CREATE_ACCESSORS(stopbits, int)
2060CREATE_ACCESSORS(rts, enum sp_rts)
2061CREATE_ACCESSORS(cts, enum sp_cts)
2062CREATE_ACCESSORS(dtr, enum sp_dtr)
2063CREATE_ACCESSORS(dsr, enum sp_dsr)
2064CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2065
2066enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, enum sp_flowcontrol flowcontrol)
e33ab9aa 2067{
9b1502ef
ML		 2068 if (!config)
2069 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2070
2071 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2072 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2073
e33ab9aa 2074 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2075 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2076 else
9b1502ef 2077 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2078
2079 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2080 config->rts = SP_RTS_FLOW_CONTROL;
2081 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2082 } else {
9b1502ef
ML		 2083 if (config->rts == SP_RTS_FLOW_CONTROL)
2084 config->rts = SP_RTS_ON;
2085 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2086 }
2087
2088 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2089 config->dtr = SP_DTR_FLOW_CONTROL;
2090 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2091 } else {
9b1502ef
ML		 2092 if (config->dtr == SP_DTR_FLOW_CONTROL)
2093 config->dtr = SP_DTR_ON;
2094 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2095 }
2096
9b1502ef
ML		 2097 RETURN_OK();
2098}
2099
2100enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol)
2101{
2102 struct port_data data;
2103 struct sp_port_config config;
2104
2105 TRACE("%p, %d", port, flowcontrol);
2106
2107 CHECK_OPEN_PORT();
2108
2109 TRY(get_config(port, &data, &config));
2110
2111 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2112
e33ab9aa
ML		 2113 TRY(set_config(port, &data, &config));
2114
c33efc48 2115 RETURN_OK();
e33ab9aa
ML		 2116}
2117
8cf7c697
ML		 2118enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signals)
2119{
c33efc48
ML		 2120 TRACE("%p, %p", port, signals);
2121
dec10e31 2122 CHECK_OPEN_PORT();
8cf7c697
ML		 2123
2124 if (!signals)
c33efc48 2125 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2126
ea667be7
ML		 2127 DEBUG("Getting control signals for port %s", port->name);
2128
8cf7c697
ML		 2129 *signals = 0;
2130#ifdef _WIN32
2131 DWORD bits;
2132 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2133 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2134 if (bits & MS_CTS_ON)
2135 *signals |= SP_SIG_CTS;
2136 if (bits & MS_DSR_ON)
2137 *signals |= SP_SIG_DSR;
8cf7c697 2138 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2139 *signals |= SP_SIG_DCD;
2140 if (bits & MS_RING_ON)
8cf7c697
ML		 2141 *signals |= SP_SIG_RI;
2142#else
2143 int bits;
2144 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2145 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2146 if (bits & TIOCM_CTS)
2147 *signals |= SP_SIG_CTS;
2148 if (bits & TIOCM_DSR)
2149 *signals |= SP_SIG_DSR;
2150 if (bits & TIOCM_CAR)
2151 *signals |= SP_SIG_DCD;
2152 if (bits & TIOCM_RNG)
2153 *signals |= SP_SIG_RI;
2154#endif
c33efc48 2155 RETURN_OK();
8cf7c697
ML		 2156}
2157
90cc3ee6
ML		 2158enum sp_return sp_start_break(struct sp_port *port)
2159{
c33efc48
ML		 2160 TRACE("%p", port);
2161
dec10e31 2162 CHECK_OPEN_PORT();
90cc3ee6
ML		 2163#ifdef _WIN32
2164 if (SetCommBreak(port->hdl) == 0)
c33efc48 2165 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2166#else
2167 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2168 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2169#endif
2170
c33efc48 2171 RETURN_OK();
90cc3ee6
ML		 2172}
2173
2174enum sp_return sp_end_break(struct sp_port *port)
2175{
c33efc48
ML		 2176 TRACE("%p", port);
2177
dec10e31 2178 CHECK_OPEN_PORT();
90cc3ee6
ML		 2179#ifdef _WIN32
2180 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2181 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2182#else
2183 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2184 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2185#endif
2186
c33efc48 2187 RETURN_OK();
90cc3ee6
ML		 2188}
2189
74510d4b
ML		 2190int sp_last_error_code(void)
2191{
c33efc48 2192 TRACE("");
74510d4b 2193#ifdef _WIN32
c33efc48 2194 RETURN_VALUE("%d", GetLastError());
74510d4b 2195#else
c33efc48 2196 RETURN_VALUE("%d", errno);
74510d4b
ML		 2197#endif
2198}
2199
74510d4b
ML		 2200char *sp_last_error_message(void)
2201{
c33efc48
ML		 2202 TRACE("");
2203
74510d4b
ML		 2204#ifdef _WIN32
2205 LPVOID message;
2206 DWORD error = GetLastError();
2207
2208 FormatMessage(
2209 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2210 FORMAT_MESSAGE_FROM_SYSTEM |
2211 FORMAT_MESSAGE_IGNORE_INSERTS,
2212 NULL,
2213 error,
2214 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2215 (LPTSTR) &message,
2216 0, NULL );
2217
c33efc48 2218 RETURN_VALUE("%s", message);
74510d4b 2219#else
c33efc48 2220 RETURN_VALUE("%s", strerror(errno));
74510d4b
ML		 2221#endif
2222}
2223
74510d4b
ML		 2224void sp_free_error_message(char *message)
2225{
c33efc48
ML		 2226 TRACE("%s", message);
2227
74510d4b
ML		 2228#ifdef _WIN32
2229 LocalFree(message);
64eec30d
ML		 2230#else
2231 (void)message;
74510d4b 2232#endif
c33efc48
ML		 2233
2234 RETURN();
74510d4b 2235}
863b35e6
ML		 2236
2237void sp_set_debug_handler(void (*handler)(const char *format, ...))
2238{
c33efc48
ML		 2239 TRACE("%p", handler);
2240
863b35e6 2241 sp_debug_handler = handler;
c33efc48
ML		 2242
2243 RETURN();
863b35e6
ML		 2244}
2245
2246void sp_default_debug_handler(const char *format, ...)
2247{
2248 va_list args;
2249 va_start(args, format);
2250 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2251 fputs("sp: ", stderr);
863b35e6
ML		 2252 vfprintf(stderr, format, args);
2253 }
2254 va_end(args);
2255}
524b0e14
UH		 2256
2257int sp_get_major_package_version(void)
2258{
2259 return SP_PACKAGE_VERSION_MAJOR;
2260}
2261
2262int sp_get_minor_package_version(void)
2263{
2264 return SP_PACKAGE_VERSION_MINOR;
2265}
2266
2267int sp_get_micro_package_version(void)
2268{
2269 return SP_PACKAGE_VERSION_MICRO;
2270}
2271
2272const char *sp_get_package_version_string(void)
2273{
2274 return SP_PACKAGE_VERSION_STRING;
2275}
2276
2277int sp_get_current_lib_version(void)
2278{
2279 return SP_LIB_VERSION_CURRENT;
2280}
2281
2282int sp_get_revision_lib_version(void)
2283{
2284 return SP_LIB_VERSION_REVISION;
2285}
2286
2287int sp_get_age_lib_version(void)
2288{
2289 return SP_LIB_VERSION_AGE;
2290}
2291
2292const char *sp_get_lib_version_string(void)
2293{
2294 return SP_LIB_VERSION_STRING;
2295}
2296
2297/** @} */
Serial port access library