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Remove duplicated include.
[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>
74510d4b
ML		 8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation, either version 3 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23#include <string.h>
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <fcntl.h>
27#include <unistd.h>
3b63f34d
ML		 28#include <stdlib.h>
29#include <errno.h>
863b35e6
ML		 30#include <stdio.h>
31#include <stdarg.h>
74510d4b
ML		 32#ifdef _WIN32
33#include <windows.h>
3b63f34d 34#include <tchar.h>
74510d4b 35#else
8fbf876d 36#include <limits.h>
74510d4b
ML		 37#include <termios.h>
38#include <sys/ioctl.h>
e3dcf906
ML		 39#include <sys/time.h>
40#include <limits.h>
6f1186aa 41#include <poll.h>
74510d4b 42#endif
3b63f34d 43#ifdef __APPLE__
1ebf4347
ML		 44#include <IOKit/IOKitLib.h>
45#include <IOKit/serial/IOSerialKeys.h>
31b3a8f5 46#include <IOKit/serial/ioss.h>
1ebf4347 47#include <sys/syslimits.h>
3b63f34d
ML		 48#endif
49#ifdef __linux__
397d89de 50#ifdef HAVE_LIBUDEV
3b63f34d 51#include "libudev.h"
397d89de 52#endif
33fd8804 53#ifndef __ANDROID__
4b97c9fc 54#include "linux/serial.h"
33fd8804 55#endif
7a6d2196 56#include "linux_termios.h"
6c8716e9
UH		 57
58/* TCGETX/TCSETX is not available everywhere. */
40978c2b 59#if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX)
68ec29db 60#define USE_TERMIOX
40978c2b 61#endif
3b63f34d 62#endif
74510d4b 63
6c8716e9
UH		 64/* TIOCINQ/TIOCOUTQ is not available everywhere. */
65#if !defined(TIOCINQ) && defined(FIONREAD)
66#define TIOCINQ FIONREAD
67#endif
68#if !defined(TIOCOUTQ) && defined(FIONWRITE)
69#define TIOCOUTQ FIONWRITE
70#endif
71
5cea279a
ML		 72/* Non-standard baudrates are not available everywhere. */
73#if defined(HAVE_TERMIOS_SPEED) || defined(HAVE_TERMIOS2_SPEED)
74#define USE_TERMIOS_SPEED
75#endif
76
f6a1fb65 77#include "libserialport.h"
74510d4b 78
1c5aae9d
ML		 79struct sp_port {
80 char *name;
81#ifdef _WIN32
82 HANDLE hdl;
e3dcf906 83 COMMTIMEOUTS timeouts;
a3cb91f5 84 OVERLAPPED write_ovl;
e3dcf906 85 OVERLAPPED read_ovl;
6f1186aa
ML		 86 OVERLAPPED wait_ovl;
87 DWORD events;
0765af56 88 BYTE pending_byte;
a3cb91f5 89 BOOL writing;
1c5aae9d
ML		 90#else
91 int fd;
92#endif
93};
94
9b1502ef
ML		 95struct sp_port_config {
96 int baudrate;
97 int bits;
98 enum sp_parity parity;
99 int stopbits;
100 enum sp_rts rts;
101 enum sp_cts cts;
102 enum sp_dtr dtr;
103 enum sp_dsr dsr;
104 enum sp_xonxoff xon_xoff;
105};
106
8f189c4c 107struct port_data {
8094e4a0
ML		 108#ifdef _WIN32
109 DCB dcb;
110#else
111 struct termios term;
824dcb45 112 int controlbits;
68ec29db 113 int termiox_supported;
bd791fe1
ML		 114 int rts_flow;
115 int cts_flow;
116 int dtr_flow;
117 int dsr_flow;
40978c2b 118#endif
8094e4a0
ML		 119};
120
6f1186aa
ML		 121#ifdef _WIN32
122typedef HANDLE event_handle;
123#else
124typedef int event_handle;
125#endif
126
da2748bf
ML		 127/* Standard baud rates. */
128#ifdef _WIN32
129#define BAUD_TYPE DWORD
130#define BAUD(n) {CBR_##n, n}
131#else
132#define BAUD_TYPE speed_t
133#define BAUD(n) {B##n, n}
134#endif
135
136struct std_baudrate {
137 BAUD_TYPE index;
138 int value;
139};
140
141const struct std_baudrate std_baudrates[] = {
142#ifdef _WIN32
143 /*
144 * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
145 * have documented CBR_* macros.
146 */
147 BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
148 BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
eac329d2 149 BAUD(115200), BAUD(128000), BAUD(256000),
da2748bf 150#else
eac329d2
UH		 151 BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
152 BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
153 BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
154 BAUD(230400),
da2748bf 155#if !defined(__APPLE__) && !defined(__OpenBSD__)
eac329d2 156 BAUD(460800),
da2748bf
ML		 157#endif
158#endif
159};
160
863b35e6
ML		 161void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
162
da2748bf
ML		 163#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
164#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
165
92f756f8
ML		 166/* Debug output macros. */
167#define DEBUG(fmt, ...) do { if (sp_debug_handler) sp_debug_handler(fmt ".\n", ##__VA_ARGS__); } while (0)
8edf649c
AJ		 168#define DEBUG_ERROR(err, fmt, ...) DEBUG("%s returning " #err ": " fmt, __func__, ##__VA_ARGS__)
169#define DEBUG_FAIL(fmt, ...) do { \
92f756f8 170 char *errmsg = sp_last_error_message(); \
8edf649c 171 DEBUG("%s returning SP_ERR_FAIL: "fmt": %s", __func__,##__VA_ARGS__,errmsg); \
92f756f8
ML		 172 sp_free_error_message(errmsg); \
173} while (0);
174#define RETURN() do { DEBUG("%s returning", __func__); return; } while(0)
175#define RETURN_CODE(x) do { DEBUG("%s returning " #x, __func__); return x; } while (0)
176#define RETURN_CODEVAL(x) do { \
177 switch (x) { \
178 case SP_OK: RETURN_CODE(SP_OK); \
179 case SP_ERR_ARG: RETURN_CODE(SP_ERR_ARG); \
180 case SP_ERR_FAIL: RETURN_CODE(SP_ERR_FAIL); \
181 case SP_ERR_MEM: RETURN_CODE(SP_ERR_MEM); \
182 case SP_ERR_SUPP: RETURN_CODE(SP_ERR_SUPP); \
183 } \
184} while (0)
185#define RETURN_OK() RETURN_CODE(SP_OK);
8edf649c
AJ		 186#define RETURN_ERROR(err, ...) do { DEBUG_ERROR(err, __VA_ARGS__); return err; } while (0)
187#define RETURN_FAIL(...) do { DEBUG_FAIL(__VA_ARGS__); return SP_ERR_FAIL; } while (0)
7c1eff54
ML		 188#define RETURN_VALUE(fmt, x) do { \
189 typeof(x) _x = x; \
190 DEBUG("%s returning " fmt, __func__, _x); \
191 return _x; \
192} while (0)
92f756f8 193#define SET_ERROR(val, err, msg) do { DEBUG_ERROR(err, msg); val = err; } while (0)
aac4d7f2 194#define SET_FAIL(val, msg) do { DEBUG_FAIL(msg); val = SP_ERR_FAIL; } while (0)
92f756f8
ML		 195#define TRACE(fmt, ...) DEBUG("%s(" fmt ") called", __func__, ##__VA_ARGS__)
196
64690702
ML		 197#define TRY(x) do { int ret = x; if (ret != SP_OK) RETURN_CODEVAL(ret); } while (0)
198
348e23cc 199/* Helper functions. */
348e23cc 200static struct sp_port **list_append(struct sp_port **list, const char *portname);
eb6ed20f
ML		 201static enum sp_return get_config(struct sp_port *port, struct port_data *data,
202 struct sp_port_config *config);
203static enum sp_return set_config(struct sp_port *port, struct port_data *data,
204 const struct sp_port_config *config);
80186526 205
eb6ed20f 206enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 207{
208 struct sp_port *port;
5919c913 209 int len;
d54e9004 210
c33efc48
ML		 211 TRACE("%s, %p", portname, port_ptr);
212
32b5ac05 213 if (!port_ptr)
c33efc48 214 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 215
77f262c4
ML		 216 *port_ptr = NULL;
217
d4babed2 218 if (!portname)
c33efc48 219 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 220
ea667be7
ML		 221 DEBUG("Building structure for port %s", portname);
222
d54e9004 223 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 224 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 225
5919c913
ML		 226 len = strlen(portname) + 1;
227
eac329d2 228 if (!(port->name = malloc(len))) {
d54e9004 229 free(port);
c33efc48 230 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 231 }
232
233 memcpy(port->name, portname, len);
234
8f471c66
ML		 235#ifdef _WIN32
236 port->hdl = INVALID_HANDLE_VALUE;
237#else
238 port->fd = -1;
239#endif
240
77f262c4
ML		 241 *port_ptr = port;
242
c33efc48 243 RETURN_OK();
d54e9004
ML		 244}
245
1c5aae9d
ML		 246char *sp_get_port_name(const struct sp_port *port)
247{
248 TRACE("%p", port);
249
250 if (!port)
251 return NULL;
252
253 RETURN_VALUE("%s", port->name);
254}
255
3c126654
ML		 256enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr)
257{
00d8c56d 258 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 259
260 if (!port)
261 RETURN_ERROR(SP_ERR_ARG, "Null port");
262
263#ifdef _WIN32
264 HANDLE *handle_ptr = result_ptr;
265 *handle_ptr = port->hdl;
266#else
267 int *fd_ptr = result_ptr;
268 *fd_ptr = port->fd;
269#endif
270
271 RETURN_OK();
272}
273
eb6ed20f 274enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr)
32b5ac05 275{
c33efc48
ML		 276 TRACE("%p, %p", port, copy_ptr);
277
32b5ac05 278 if (!copy_ptr)
c33efc48 279 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 280
281 *copy_ptr = NULL;
282
c33efc48
ML		 283 if (!port)
284 RETURN_ERROR(SP_ERR_ARG, "Null port");
285
286 if (!port->name)
287 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 288
ea667be7
ML		 289 DEBUG("Copying port structure");
290
c33efc48 291 RETURN_VALUE("%p", sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 292}
293
e3b2f7a4
ML		 294void sp_free_port(struct sp_port *port)
295{
c33efc48
ML		 296 TRACE("%p", port);
297
00d8c56d 298 if (!port) {
c33efc48
ML		 299 DEBUG("Null port");
300 RETURN();
301 }
e3b2f7a4 302
ea667be7
ML		 303 DEBUG("Freeing port structure");
304
e3b2f7a4
ML		 305 if (port->name)
306 free(port->name);
307
308 free(port);
c33efc48
ML		 309
310 RETURN();
e3b2f7a4
ML		 311}
312
348e23cc 313static struct sp_port **list_append(struct sp_port **list, const char *portname)
3b63f34d
ML		 314{
315 void *tmp;
316 unsigned int count;
f92f1f0c 317
3b63f34d 318 for (count = 0; list[count]; count++);
d54e9004 319 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 320 goto fail;
321 list = tmp;
77f262c4 322 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 323 goto fail;
db2794ce 324 list[count + 1] = NULL;
3b63f34d 325 return list;
f92f1f0c 326
3b63f34d
ML		 327fail:
328 sp_free_port_list(list);
329 return NULL;
330}
331
eb6ed20f 332enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 333{
d54e9004 334 struct sp_port **list;
6b93ede4 335 int ret = SP_ERR_SUPP;
24c1a4bb 336
c33efc48
ML		 337 TRACE("%p", list_ptr);
338
dec10e31
ML		 339 if (!list_ptr)
340 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
341
ea667be7
ML		 342 DEBUG("Enumerating ports");
343
d54e9004 344 if (!(list = malloc(sizeof(struct sp_port **))))
c33efc48 345 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 346
347 list[0] = NULL;
3b63f34d
ML		 348
349#ifdef _WIN32
350 HKEY key;
bdfb5b8c
ML		 351 TCHAR *value, *data;
352 DWORD max_value_len, max_data_size, max_data_len;
353 DWORD value_len, data_size, data_len;
3b63f34d 354 DWORD type, index = 0;
8b532d9c
ML		 355 char *name;
356 int name_len;
3b63f34d 357
6b93ede4
ML		 358 ret = SP_OK;
359
ea667be7 360 DEBUG("Opening registry key");
3b63f34d 361 if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
eac329d2 362 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) {
c33efc48 363 SET_FAIL(ret, "RegOpenKeyEx() failed");
77f262c4
ML		 364 goto out_done;
365 }
ea667be7 366 DEBUG("Querying registry key value and data sizes");
3b63f34d 367 if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
eac329d2 368 &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) {
c33efc48 369 SET_FAIL(ret, "RegQueryInfoKey() failed");
3b63f34d 370 goto out_close;
77f262c4 371 }
3b63f34d 372 max_data_len = max_data_size / sizeof(TCHAR);
eac329d2 373 if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) {
c33efc48 374 SET_ERROR(ret, SP_ERR_MEM, "registry value malloc failed");
3b63f34d 375 goto out_close;
77f262c4 376 }
eac329d2 377 if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) {
c33efc48 378 SET_ERROR(ret, SP_ERR_MEM, "registry data malloc failed");
bdfb5b8c 379 goto out_free_value;
77f262c4 380 }
ea667be7 381 DEBUG("Iterating over values");
3b63f34d 382 while (
d9573bad 383 value_len = max_value_len + 1,
3b63f34d 384 data_size = max_data_size,
bdfb5b8c 385 RegEnumValue(key, index, value, &value_len,
3b63f34d
ML		 386 NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS)
387 {
388 data_len = data_size / sizeof(TCHAR);
389 data[data_len] = '\0';
8b532d9c 390#ifdef UNICODE
904ac164 391 name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL);
8b532d9c
ML		 392#else
393 name_len = data_len + 1;
394#endif
eac329d2 395 if (!(name = malloc(name_len))) {
c33efc48 396 SET_ERROR(ret, SP_ERR_MEM, "registry port name malloc failed");
8b532d9c 397 goto out;
77f262c4 398 }
8b532d9c
ML		 399#ifdef UNICODE
400 WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL);
401#else
402 strcpy(name, data);
403#endif
c33efc48
ML		 404 if (type == REG_SZ) {
405 DEBUG("Found port %s", name);
406 if (!(list = list_append(list, name))) {
407 SET_ERROR(ret, SP_ERR_MEM, "list append failed");
408 goto out;
409 }
77f262c4 410 }
3b63f34d
ML		 411 index++;
412 }
413out:
414 free(data);
bdfb5b8c
ML		 415out_free_value:
416 free(value);
3b63f34d
ML		 417out_close:
418 RegCloseKey(key);
77f262c4 419out_done:
3b63f34d
ML		 420#endif
421#ifdef __APPLE__
422 mach_port_t master;
423 CFMutableDictionaryRef classes;
424 io_iterator_t iter;
425 char *path;
426 io_object_t port;
427 CFTypeRef cf_path;
428 Boolean result;
429
6b93ede4
ML		 430 ret = SP_OK;
431
ea667be7 432 DEBUG("Getting IOKit master port");
eac329d2 433 if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) {
c33efc48 434 SET_FAIL(ret, "IOMasterPort() failed");
77f262c4
ML		 435 goto out_done;
436 }
3b63f34d 437
ea667be7 438 DEBUG("Creating matching dictionary");
eac329d2 439 if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) {
c33efc48 440 SET_FAIL(ret, "IOServiceMatching() failed");
77f262c4
ML		 441 goto out_done;
442 }
3b63f34d
ML		 443
444 CFDictionarySetValue(classes,
445 CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
446
ea667be7 447 DEBUG("Getting matching services");
eac329d2 448 if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) {
c33efc48 449 SET_FAIL(ret, "IOServiceGetMatchingServices() failed");
77f262c4
ML		 450 goto out_done;
451 }
3b63f34d 452
eac329d2 453 if (!(path = malloc(PATH_MAX))) {
c33efc48 454 SET_ERROR(ret, SP_ERR_MEM, "device path malloc failed");
3b63f34d 455 goto out_release;
77f262c4 456 }
3b63f34d 457
ea667be7 458 DEBUG("Iterating over results");
1ebf4347 459 while ((port = IOIteratorNext(iter))) {
3b63f34d
ML		 460 cf_path = IORegistryEntryCreateCFProperty(port,
461 CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0);
462 if (cf_path) {
463 result = CFStringGetCString(cf_path,
464 path, PATH_MAX, kCFStringEncodingASCII);
465 CFRelease(cf_path);
c33efc48
ML		 466 if (result) {
467 DEBUG("Found port %s", path);
468 if (!(list = list_append(list, path))) {
469 SET_ERROR(ret, SP_ERR_MEM, "list append failed");
470 IOObjectRelease(port);
471 goto out;
472 }
77f262c4 473 }
3b63f34d
ML		 474 }
475 IOObjectRelease(port);
476 }
3b63f34d
ML		 477out:
478 free(path);
479out_release:
480 IOObjectRelease(iter);
77f262c4 481out_done:
3b63f34d 482#endif
397d89de 483#if defined(__linux__) && defined(HAVE_LIBUDEV)
3b63f34d
ML		 484 struct udev *ud;
485 struct udev_enumerate *ud_enumerate;
486 struct udev_list_entry *ud_list;
487 struct udev_list_entry *ud_entry;
488 const char *path;
08fe0bdb 489 struct udev_device *ud_dev, *ud_parent;
3b63f34d 490 const char *name;
4b97c9fc
ML		 491 const char *driver;
492 int fd, ioctl_result;
493 struct serial_struct serial_info;
3b63f34d 494
6b93ede4
ML		 495 ret = SP_OK;
496
ea667be7 497 DEBUG("Enumerating tty devices");
3b63f34d
ML		 498 ud = udev_new();
499 ud_enumerate = udev_enumerate_new(ud);
500 udev_enumerate_add_match_subsystem(ud_enumerate, "tty");
501 udev_enumerate_scan_devices(ud_enumerate);
502 ud_list = udev_enumerate_get_list_entry(ud_enumerate);
ea667be7 503 DEBUG("Iterating over results");
eac329d2 504 udev_list_entry_foreach(ud_entry, ud_list) {
3b63f34d 505 path = udev_list_entry_get_name(ud_entry);
ea667be7 506 DEBUG("Found device %s", path);
3b63f34d 507 ud_dev = udev_device_new_from_syspath(ud, path);
08fe0bdb
ML		 508 /* If there is no parent device, this is a virtual tty. */
509 ud_parent = udev_device_get_parent(ud_dev);
eac329d2 510 if (ud_parent == NULL) {
ea667be7 511 DEBUG("No parent device, assuming virtual tty");
08fe0bdb
ML		 512 udev_device_unref(ud_dev);
513 continue;
514 }
3b63f34d 515 name = udev_device_get_devnode(ud_dev);
4b97c9fc
ML		 516 /* The serial8250 driver has a hardcoded number of ports.
517 * The only way to tell which actually exist on a given system
518 * is to try to open them and make an ioctl call. */
519 driver = udev_device_get_driver(ud_parent);
eac329d2 520 if (driver && !strcmp(driver, "serial8250")) {
ea667be7
ML		 521 DEBUG("serial8250 device, attempting to open");
522 if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) {
523 DEBUG("open failed, skipping");
4b97c9fc 524 goto skip;
ea667be7 525 }
4b97c9fc
ML		 526 ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info);
527 close(fd);
ea667be7
ML		 528 if (ioctl_result != 0) {
529 DEBUG("ioctl failed, skipping");
4b97c9fc 530 goto skip;
ea667be7
ML		 531 }
532 if (serial_info.type == PORT_UNKNOWN) {
533 DEBUG("port type is unknown, skipping");
4b97c9fc 534 goto skip;
ea667be7 535 }
4b97c9fc 536 }
c33efc48 537 DEBUG("Found port %s", name);
348e23cc 538 list = list_append(list, name);
4b97c9fc 539skip:
3b63f34d 540 udev_device_unref(ud_dev);
eac329d2 541 if (!list) {
c33efc48 542 SET_ERROR(ret, SP_ERR_MEM, "list append failed");
3b63f34d 543 goto out;
77f262c4 544 }
3b63f34d
ML		 545 }
546out:
547 udev_enumerate_unref(ud_enumerate);
548 udev_unref(ud);
3b63f34d 549#endif
77f262c4 550
6b93ede4
ML		 551 switch (ret) {
552 case SP_OK:
77f262c4 553 *list_ptr = list;
c33efc48 554 RETURN_OK();
6b93ede4 555 case SP_ERR_SUPP:
9af8cff3 556 DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
6b93ede4 557 default:
77f262c4
ML		 558 if (list)
559 sp_free_port_list(list);
77f262c4 560 *list_ptr = NULL;
c33efc48 561 return ret;
77f262c4 562 }
3b63f34d
ML		 563}
564
d54e9004 565void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 566{
567 unsigned int i;
f92f1f0c 568
c33efc48
ML		 569 TRACE("%p", list);
570
dec10e31
ML		 571 if (!list) {
572 DEBUG("Null list");
573 RETURN();
574 }
575
ea667be7
ML		 576 DEBUG("Freeing port list");
577
3b63f34d 578 for (i = 0; list[i]; i++)
e3b2f7a4 579 sp_free_port(list[i]);
3b63f34d 580 free(list);
c33efc48
ML		 581
582 RETURN();
3b63f34d
ML		 583}
584
c33efc48
ML		 585#define CHECK_PORT() do { \
586 if (port == NULL) \
587 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dec10e31
ML		 588 if (port->name == NULL) \
589 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
590} while (0)
591#ifdef _WIN32
592#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 593 if (port->hdl == INVALID_HANDLE_VALUE) \
594 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 595} while (0)
74510d4b 596#else
dec10e31 597#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 598 if (port->fd < 0) \
599 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 600} while (0)
74510d4b 601#endif
dec10e31
ML		 602#define CHECK_OPEN_PORT() do { \
603 CHECK_PORT(); \
604 CHECK_PORT_HANDLE(); \
605} while (0)
74510d4b 606
eb6ed20f 607enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 608{
bccc7c9f
ML		 609 struct port_data data;
610 struct sp_port_config config;
611 enum sp_return ret;
612
00d8c56d 613 TRACE("%p, 0x%x", port, flags);
c33efc48 614
dec10e31
ML		 615 CHECK_PORT();
616
e3dcf906 617 if (flags > (SP_MODE_READ | SP_MODE_WRITE))
dec10e31 618 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 619
ea667be7
ML		 620 DEBUG("Opening port %s", port->name);
621
74510d4b 622#ifdef _WIN32
537942c9 623 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 624 char *escaped_port_name;
537942c9 625 COMSTAT status;
99945a1f
ML		 626
627 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 628 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 629 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 630 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
631
74510d4b 632 /* Map 'flags' to the OS-specific settings. */
e3dcf906 633 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 634 if (flags & SP_MODE_READ)
635 desired_access |= GENERIC_READ;
636 if (flags & SP_MODE_WRITE)
74510d4b 637 desired_access |= GENERIC_WRITE;
74510d4b 638
99945a1f 639 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 640 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 641
642 free(escaped_port_name);
643
74510d4b 644 if (port->hdl == INVALID_HANDLE_VALUE)
e3dcf906
ML		 645 RETURN_FAIL("port CreateFile() failed");
646
647 /* All timeouts initially disabled. */
648 port->timeouts.ReadIntervalTimeout = 0;
649 port->timeouts.ReadTotalTimeoutMultiplier = 0;
650 port->timeouts.ReadTotalTimeoutConstant = 0;
651 port->timeouts.WriteTotalTimeoutMultiplier = 0;
652 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 653
e3dcf906 654 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 655 sp_close(port);
656 RETURN_FAIL("SetCommTimeouts() failed");
657 }
e3dcf906
ML		 658
659 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 660#define INIT_OVERLAPPED(ovl) do { \
661 memset(&port->ovl, 0, sizeof(port->ovl)); \
662 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
663 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
664 == INVALID_HANDLE_VALUE) { \
665 sp_close(port); \
666 RETURN_FAIL(#ovl "CreateEvent() failed"); \
667 } \
668} while (0)
669
670 INIT_OVERLAPPED(read_ovl);
671 INIT_OVERLAPPED(write_ovl);
672 INIT_OVERLAPPED(wait_ovl);
673
674 /* Set event mask for RX and error events. */
675 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 676 sp_close(port);
6f1186aa 677 RETURN_FAIL("SetCommMask() failed");
e3dcf906 678 }
6f1186aa
ML		 679
680 /* Start background operation for RX and error events. */
681 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
682 if (GetLastError() != ERROR_IO_PENDING) {
683 sp_close(port);
684 RETURN_FAIL("WaitCommEvent() failed");
685 }
e3dcf906
ML		 686 }
687
688 port->writing = FALSE;
689
74510d4b 690#else
e3dcf906 691 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 692
74510d4b 693 /* Map 'flags' to the OS-specific settings. */
a036341b 694 if (flags & (SP_MODE_READ | SP_MODE_WRITE))
74510d4b 695 flags_local |= O_RDWR;
a036341b 696 else if (flags & SP_MODE_READ)
74510d4b 697 flags_local |= O_RDONLY;
a036341b
ML		 698 else if (flags & SP_MODE_WRITE)
699 flags_local |= O_WRONLY;
74510d4b
ML		 700
701 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 702 RETURN_FAIL("open() failed");
bccc7c9f 703#endif
9cb98459 704
e33ab9aa
ML		 705 ret = get_config(port, &data, &config);
706
eac329d2 707 if (ret < 0) {
e33ab9aa 708 sp_close(port);
c33efc48 709 RETURN_CODEVAL(ret);
e33ab9aa 710 }
9cb98459 711
bccc7c9f
ML		 712 /* Set sane port settings. */
713#ifdef _WIN32
714 data.dcb.fBinary = TRUE;
715 data.dcb.fDsrSensitivity = FALSE;
716 data.dcb.fErrorChar = FALSE;
717 data.dcb.fNull = FALSE;
718 data.dcb.fAbortOnError = TRUE;
719#else
b251be4b 720 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 721 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
722#ifdef IUCLC
723 data.term.c_iflag &= ~IUCLC;
724#endif
725 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
726#ifdef OLCUC
727 data.term.c_oflag &= ~OLCUC;
728#endif
729#ifdef NLDLY
730 data.term.c_oflag &= ~NLDLY;
731#endif
732#ifdef CRDLY
733 data.term.c_oflag &= ~CRDLY;
734#endif
735#ifdef TABDLY
736 data.term.c_oflag &= ~TABDLY;
737#endif
738#ifdef BSDLY
739 data.term.c_oflag &= ~BSDLY;
740#endif
741#ifdef VTDLY
742 data.term.c_oflag &= ~VTDLY;
743#endif
744#ifdef FFDLY
745 data.term.c_oflag &= ~FFDLY;
746#endif
b251be4b 747#ifdef OFILL
9cb98459
ML		 748 data.term.c_oflag &= ~OFILL;
749#endif
c3e05092 750 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 751 data.term.c_cc[VMIN] = 0;
b251be4b 752 data.term.c_cc[VTIME] = 0;
9cb98459 753
b251be4b
ML		 754 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
755 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 756#endif
9cb98459 757
537942c9 758#ifdef _WIN32
1a2a1544
UH		 759 if (ClearCommError(port->hdl, &errors, &status) == 0)
760 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 761#endif
762
e33ab9aa
ML		 763 ret = set_config(port, &data, &config);
764
eac329d2 765 if (ret < 0) {
e33ab9aa 766 sp_close(port);
c33efc48 767 RETURN_CODEVAL(ret);
e33ab9aa 768 }
74510d4b 769
c33efc48 770 RETURN_OK();
74510d4b
ML		 771}
772
eb6ed20f 773enum sp_return sp_close(struct sp_port *port)
74510d4b 774{
c33efc48
ML		 775 TRACE("%p", port);
776
dec10e31 777 CHECK_OPEN_PORT();
74510d4b 778
ea667be7
ML		 779 DEBUG("Closing port %s", port->name);
780
74510d4b
ML		 781#ifdef _WIN32
782 /* Returns non-zero upon success, 0 upon failure. */
783 if (CloseHandle(port->hdl) == 0)
e3dcf906 784 RETURN_FAIL("port CloseHandle() failed");
8f471c66 785 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 786
787 /* Close event handles for overlapped structures. */
788#define CLOSE_OVERLAPPED(ovl) do { \
789 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
790 CloseHandle(port->ovl.hEvent) == 0) \
791 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
792} while (0)
793 CLOSE_OVERLAPPED(read_ovl);
794 CLOSE_OVERLAPPED(write_ovl);
795 CLOSE_OVERLAPPED(wait_ovl);
796
74510d4b
ML		 797#else
798 /* Returns 0 upon success, -1 upon failure. */
799 if (close(port->fd) == -1)
c33efc48 800 RETURN_FAIL("close() failed");
8f471c66 801 port->fd = -1;
74510d4b
ML		 802#endif
803
c33efc48 804 RETURN_OK();
74510d4b
ML		 805}
806
fd8fd11a 807enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 808{
00d8c56d 809 TRACE("%p, 0x%x", port, buffers);
c33efc48 810
dec10e31
ML		 811 CHECK_OPEN_PORT();
812
813 if (buffers > SP_BUF_BOTH)
814 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 815
0ba3e49b 816 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7
ML		 817
818 DEBUG("Flushing %s buffers on port %s", buffer_names[buffers], port->name);
819
74510d4b 820#ifdef _WIN32
fd8fd11a
ML		 821 DWORD flags = 0;
822 if (buffers & SP_BUF_INPUT)
823 flags |= PURGE_RXCLEAR;
824 if (buffers & SP_BUF_OUTPUT)
825 flags |= PURGE_TXCLEAR;
826
74510d4b 827 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 828 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 829 RETURN_FAIL("PurgeComm() failed");
74510d4b 830#else
fd8fd11a
ML		 831 int flags = 0;
832 if (buffers & SP_BUF_BOTH)
833 flags = TCIOFLUSH;
834 else if (buffers & SP_BUF_INPUT)
835 flags = TCIFLUSH;
82f424e6 836 else if (buffers & SP_BUF_OUTPUT)
fd8fd11a
ML		 837 flags = TCOFLUSH;
838
74510d4b 839 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 840 if (tcflush(port->fd, flags) < 0)
c33efc48 841 RETURN_FAIL("tcflush() failed");
74510d4b 842#endif
c33efc48 843 RETURN_OK();
74510d4b
ML		 844}
845
69a3739c
ML		 846enum sp_return sp_drain(struct sp_port *port)
847{
c33efc48
ML		 848 TRACE("%p", port);
849
dec10e31 850 CHECK_OPEN_PORT();
69a3739c 851
ea667be7
ML		 852 DEBUG("Draining port %s", port->name);
853
69a3739c
ML		 854#ifdef _WIN32
855 /* Returns non-zero upon success, 0 upon failure. */
856 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 857 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 858 RETURN_OK();
69a3739c 859#else
2c827b21
ML		 860 int result;
861 while (1) {
33fd8804
ML		 862#ifdef __ANDROID__
863 int arg = 1;
864 result = ioctl(port->fd, TCSBRK, &arg);
865#else
2c827b21 866 result = tcdrain(port->fd);
33fd8804 867#endif
2c827b21
ML		 868 if (result < 0) {
869 if (errno == EINTR) {
870 DEBUG("tcdrain() was interrupted");
871 continue;
872 } else {
873 RETURN_FAIL("tcdrain() failed");
874 }
875 } else {
876 RETURN_OK();
877 }
878 }
69a3739c 879#endif
69a3739c
ML		 880}
881
e3dcf906
ML		 882enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, size_t count, unsigned int timeout)
883{
884 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
885
886 CHECK_OPEN_PORT();
887
888 if (!buf)
889 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
890
891 if (timeout)
892 DEBUG("Writing %d bytes to port %s, timeout %d ms", count, port->name, timeout);
893 else
894 DEBUG("Writing %d bytes to port %s, no timeout", count, port->name);
895
896 if (count == 0)
897 RETURN_VALUE("0", 0);
898
899#ifdef _WIN32
900 DWORD bytes_written = 0;
901 BOOL result;
902
903 /* Wait for previous non-blocking write to complete, if any. */
904 if (port->writing) {
905 DEBUG("Waiting for previous write to complete");
906 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
907 port->writing = 0;
908 if (!result)
909 RETURN_FAIL("Previous write failed to complete");
910 DEBUG("Previous write completed");
911 }
912
913 /* Set timeout. */
914 port->timeouts.WriteTotalTimeoutConstant = timeout;
915 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
916 RETURN_FAIL("SetCommTimeouts() failed");
917
918 /* Start write. */
919 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) {
920 if (GetLastError() == ERROR_IO_PENDING) {
921 DEBUG("Waiting for write to complete");
922 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
923 DEBUG("Write completed, %d/%d bytes written", bytes_written, count);
924 RETURN_VALUE("%d", bytes_written);
925 } else {
926 RETURN_FAIL("WriteFile() failed");
927 }
928 } else {
929 DEBUG("Write completed immediately");
930 RETURN_VALUE("%d", count);
931 }
932#else
933 size_t bytes_written = 0;
934 unsigned char *ptr = (unsigned char *) buf;
935 struct timeval start, delta, now, end = {0, 0};
936 fd_set fds;
937 int result;
938
939 if (timeout) {
940 /* Get time at start of operation. */
941 gettimeofday(&start, NULL);
942 /* Define duration of timeout. */
943 delta.tv_sec = timeout / 1000;
1b342042 944 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 945 /* Calculate time at which we should give up. */
946 timeradd(&start, &delta, &end);
947 }
948
949 /* Loop until we have written the requested number of bytes. */
950 while (bytes_written < count)
951 {
952 /* Wait until space is available. */
953 FD_ZERO(&fds);
954 FD_SET(port->fd, &fds);
955 if (timeout) {
956 gettimeofday(&now, NULL);
957 if (timercmp(&now, &end, >)) {
958 DEBUG("write timed out");
959 RETURN_VALUE("%d", bytes_written);
960 }
961 timersub(&end, &now, &delta);
962 }
963 result = select(port->fd + 1, NULL, &fds, NULL, timeout ? &delta : NULL);
63a17c64
ML		 964 if (result < 0) {
965 if (errno == EINTR) {
966 DEBUG("select() call was interrupted, repeating");
967 continue;
968 } else {
969 RETURN_FAIL("select() failed");
970 }
971 } else if (result == 0) {
e3dcf906
ML		 972 DEBUG("write timed out");
973 RETURN_VALUE("%d", bytes_written);
974 }
975
976 /* Do write. */
977 result = write(port->fd, ptr, count - bytes_written);
978
979 if (result < 0) {
980 if (errno == EAGAIN)
981 /* This shouldn't happen because we did a select() first, but handle anyway. */
982 continue;
983 else
984 /* This is an actual failure. */
985 RETURN_FAIL("write() failed");
986 }
987
988 bytes_written += result;
989 ptr += result;
990 }
991
992 RETURN_VALUE("%d", bytes_written);
993#endif
994}
995
996enum sp_return sp_nonblocking_write(struct sp_port *port, const void *buf, size_t count)
74510d4b 997{
c33efc48
ML		 998 TRACE("%p, %p, %d", port, buf, count);
999
dec10e31 1000 CHECK_OPEN_PORT();
74510d4b
ML		 1001
1002 if (!buf)
c33efc48 1003 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1004
ea667be7
ML		 1005 DEBUG("Writing up to %d bytes to port %s", count, port->name);
1006
a3cb91f5
ML		 1007 if (count == 0)
1008 RETURN_VALUE("0", 0);
1009
74510d4b
ML		 1010#ifdef _WIN32
1011 DWORD written = 0;
0765af56 1012 BYTE *ptr = (BYTE *) buf;
f92f1f0c 1013
e3dcf906
ML		 1014 /* Check whether previous write is complete. */
1015 if (port->writing) {
1016 if (HasOverlappedIoCompleted(&port->write_ovl)) {
1017 DEBUG("Previous write completed");
1018 port->writing = 0;
1019 } else {
1020 DEBUG("Previous write not complete");
1021 /* Can't take a new write until the previous one finishes. */
1022 RETURN_VALUE("0", 0);
a3cb91f5 1023 }
e3dcf906 1024 }
a3cb91f5 1025
e3dcf906
ML		 1026 /* Set timeout. */
1027 port->timeouts.WriteTotalTimeoutConstant = 0;
1028 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1029 RETURN_FAIL("SetCommTimeouts() failed");
1030
1031 /* Keep writing data until the OS has to actually start an async IO for it.
1032 * At that point we know the buffer is full. */
1033 while (written < count)
1034 {
1035 /* Copy first byte of user buffer. */
1036 port->pending_byte = *ptr++;
1037
1038 /* Start asynchronous write. */
1039 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
1040 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 1041 if (HasOverlappedIoCompleted(&port->write_ovl)) {
1042 DEBUG("Asynchronous write completed immediately");
1043 port->writing = 0;
1044 written++;
1045 continue;
1046 } else {
1047 DEBUG("Asynchronous write running");
1048 port->writing = 1;
1049 RETURN_VALUE("%d", ++written);
1050 }
a3cb91f5 1051 } else {
e3dcf906
ML		 1052 /* Actual failure of some kind. */
1053 RETURN_FAIL("WriteFile() failed");
a3cb91f5 1054 }
e3dcf906 1055 } else {
9af8cff3 1056 DEBUG("Single byte written immediately");
e3dcf906 1057 written++;
a3cb91f5
ML		 1058 }
1059 }
1060
9af8cff3 1061 DEBUG("All bytes written immediately");
e3dcf906 1062
c33efc48 1063 RETURN_VALUE("%d", written);
74510d4b
ML		 1064#else
1065 /* Returns the number of bytes written, or -1 upon failure. */
1066 ssize_t written = write(port->fd, buf, count);
f92f1f0c 1067
74510d4b 1068 if (written < 0)
c33efc48 1069 RETURN_FAIL("write() failed");
74510d4b 1070 else
c33efc48 1071 RETURN_VALUE("%d", written);
74510d4b
ML		 1072#endif
1073}
1074
e3dcf906
ML		 1075enum sp_return sp_blocking_read(struct sp_port *port, void *buf, size_t count, unsigned int timeout)
1076{
1077 TRACE("%p, %p, %d, %d", port, buf, count, timeout);
1078
1079 CHECK_OPEN_PORT();
1080
1081 if (!buf)
1082 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
1083
1084 if (timeout)
1085 DEBUG("Reading %d bytes from port %s, timeout %d ms", count, port->name, timeout);
1086 else
1087 DEBUG("Reading %d bytes from port %s, no timeout", count, port->name);
1088
1089 if (count == 0)
1090 RETURN_VALUE("0", 0);
1091
1092#ifdef _WIN32
1093 DWORD bytes_read = 0;
1094
1095 /* Set timeout. */
1096 port->timeouts.ReadIntervalTimeout = 0;
1097 port->timeouts.ReadTotalTimeoutConstant = timeout;
1098 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1099 RETURN_FAIL("SetCommTimeouts() failed");
1100
1101 /* Start read. */
1102 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) {
1103 if (GetLastError() == ERROR_IO_PENDING) {
1104 DEBUG("Waiting for read to complete");
1105 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
1106 DEBUG("Read completed, %d/%d bytes read", bytes_read, count);
e3dcf906
ML		 1107 } else {
1108 RETURN_FAIL("ReadFile() failed");
1109 }
1110 } else {
1111 DEBUG("Read completed immediately");
6f1186aa
ML		 1112 bytes_read = count;
1113 }
1114
1115 /* Start background operation for subsequent events. */
1116 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
1117 if (GetLastError() != ERROR_IO_PENDING)
1118 RETURN_FAIL("WaitCommEvent() failed");
e3dcf906 1119 }
6f1186aa
ML		 1120
1121 RETURN_VALUE("%d", bytes_read);
1122
e3dcf906
ML		 1123#else
1124 size_t bytes_read = 0;
1125 unsigned char *ptr = (unsigned char *) buf;
1126 struct timeval start, delta, now, end = {0, 0};
1127 fd_set fds;
1128 int result;
1129
1130 if (timeout) {
1131 /* Get time at start of operation. */
1132 gettimeofday(&start, NULL);
1133 /* Define duration of timeout. */
1134 delta.tv_sec = timeout / 1000;
1b342042 1135 delta.tv_usec = (timeout % 1000) * 1000;
e3dcf906
ML		 1136 /* Calculate time at which we should give up. */
1137 timeradd(&start, &delta, &end);
1138 }
1139
1140 /* Loop until we have the requested number of bytes. */
1141 while (bytes_read < count)
1142 {
1143 /* Wait until data is available. */
1144 FD_ZERO(&fds);
1145 FD_SET(port->fd, &fds);
1146 if (timeout) {
1147 gettimeofday(&now, NULL);
1148 if (timercmp(&now, &end, >))
1149 /* Timeout has expired. */
1150 RETURN_VALUE("%d", bytes_read);
1151 timersub(&end, &now, &delta);
1152 }
1153 result = select(port->fd + 1, &fds, NULL, NULL, timeout ? &delta : NULL);
63a17c64
ML		 1154 if (result < 0) {
1155 if (errno == EINTR) {
1156 DEBUG("select() call was interrupted, repeating");
1157 continue;
1158 } else {
1159 RETURN_FAIL("select() failed");
1160 }
1161 } else if (result == 0) {
e3dcf906
ML		 1162 DEBUG("read timed out");
1163 RETURN_VALUE("%d", bytes_read);
1164 }
1165
1166 /* Do read. */
1167 result = read(port->fd, ptr, count - bytes_read);
1168
1169 if (result < 0) {
1170 if (errno == EAGAIN)
1171 /* This shouldn't happen because we did a select() first, but handle anyway. */
1172 continue;
1173 else
1174 /* This is an actual failure. */
1175 RETURN_FAIL("read() failed");
1176 }
1177
1178 bytes_read += result;
1179 ptr += result;
1180 }
1181
1182 RETURN_VALUE("%d", bytes_read);
1183#endif
1184}
1185
1186enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf, size_t count)
74510d4b 1187{
c33efc48
ML		 1188 TRACE("%p, %p, %d", port, buf, count);
1189
dec10e31 1190 CHECK_OPEN_PORT();
74510d4b
ML		 1191
1192 if (!buf)
c33efc48 1193 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1194
ea667be7
ML		 1195 DEBUG("Reading up to %d bytes from port %s", count, port->name);
1196
74510d4b 1197#ifdef _WIN32
e3dcf906 1198 DWORD bytes_read;
f92f1f0c 1199
e3dcf906
ML		 1200 /* Set timeout. */
1201 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1202 port->timeouts.ReadTotalTimeoutConstant = 0;
1203 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1204 RETURN_FAIL("SetCommTimeouts() failed");
1205
1206 /* Do read. */
1207 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1208 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1209
1210 /* Get number of bytes read. */
1622ef60
ML		 1211 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1212 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1213
6f1186aa
ML		 1214 if (bytes_read > 0) {
1215 /* Start background operation for subsequent events. */
1216 if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
1217 if (GetLastError() != ERROR_IO_PENDING)
1218 RETURN_FAIL("WaitCommEvent() failed");
1219 }
1220 }
1221
c33efc48 1222 RETURN_VALUE("%d", bytes_read);
74510d4b
ML		 1223#else
1224 ssize_t bytes_read;
f92f1f0c 1225
74510d4b 1226 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1227 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1228 if (errno == EAGAIN)
1229 /* No bytes available. */
33d5ff47
ML		 1230 bytes_read = 0;
1231 else
1232 /* This is an actual failure. */
1233 RETURN_FAIL("read() failed");
1234 }
c33efc48 1235 RETURN_VALUE("%d", bytes_read);
74510d4b
ML		 1236#endif
1237}
1238
3353c22f
ML		 1239enum sp_return sp_input_waiting(struct sp_port *port)
1240{
1241 TRACE("%p", port);
1242
1243 CHECK_OPEN_PORT();
1244
1245 DEBUG("Checking input bytes waiting on port %s", port->name);
1246
1247#ifdef _WIN32
1248 DWORD errors;
1249 COMSTAT comstat;
1250
1251 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1252 RETURN_FAIL("ClearCommError() failed");
3353c22f
ML		 1253 RETURN_VALUE("%d", comstat.cbInQue);
1254#else
1255 int bytes_waiting;
1256 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1257 RETURN_FAIL("TIOCINQ ioctl failed");
1258 RETURN_VALUE("%d", bytes_waiting);
1259#endif
1260}
1261
1262enum sp_return sp_output_waiting(struct sp_port *port)
1263{
1264 TRACE("%p", port);
1265
1266 CHECK_OPEN_PORT();
1267
1268 DEBUG("Checking output bytes waiting on port %s", port->name);
1269
1270#ifdef _WIN32
1271 DWORD errors;
1272 COMSTAT comstat;
1273
1274 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1275 RETURN_FAIL("ClearCommError() failed");
3353c22f
ML		 1276 RETURN_VALUE("%d", comstat.cbOutQue);
1277#else
1278 int bytes_waiting;
1279 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1280 RETURN_FAIL("TIOCOUTQ ioctl failed");
1281 RETURN_VALUE("%d", bytes_waiting);
1282#endif
1283}
1284
6f1186aa
ML		 1285enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
1286{
1287 struct sp_event_set *result;
1288
1289 TRACE("%p", result_ptr);
1290
1291 if (!result_ptr)
1292 RETURN_ERROR(SP_ERR_ARG, "Null result");
1293
1294 *result_ptr = NULL;
1295
1296 if (!(result = malloc(sizeof(struct sp_event_set))))
1297 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1298
1299 memset(result, 0, sizeof(struct sp_event_set));
1300
1301 *result_ptr = result;
1302
1303 RETURN_OK();
1304}
1305
1306static enum sp_return add_handle(struct sp_event_set *event_set,
1307 event_handle handle, enum sp_event mask)
1308{
1309 void *new_handles;
1310 enum sp_event *new_masks;
1311
1312 TRACE("%p, %d, %d", event_set, handle, mask);
1313
1314 if (!(new_handles = realloc(event_set->handles,
1315 sizeof(event_handle) * (event_set->count + 1))))
1316 RETURN_ERROR(SP_ERR_MEM, "handle array realloc() failed");
1317
1318 if (!(new_masks = realloc(event_set->masks,
1319 sizeof(enum sp_event) * (event_set->count + 1))))
1320 RETURN_ERROR(SP_ERR_MEM, "mask array realloc() failed");
1321
1322 event_set->handles = new_handles;
1323 event_set->masks = new_masks;
1324
1325 ((event_handle *) event_set->handles)[event_set->count] = handle;
1326 event_set->masks[event_set->count] = mask;
1327
1328 event_set->count++;
1329
1330 RETURN_OK();
1331}
1332
1333enum sp_return sp_add_port_events(struct sp_event_set *event_set,
1334 const struct sp_port *port, enum sp_event mask)
1335{
1336 TRACE("%p, %p, %d", event_set, port, mask);
1337
1338 if (!event_set)
1339 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1340
1341 if (!port)
1342 RETURN_ERROR(SP_ERR_ARG, "Null port");
1343
1344 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1345 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1346
1347 if (!mask)
1348 RETURN_OK();
1349
1350#ifdef _WIN32
1351 enum sp_event handle_mask;
1352 if ((handle_mask = mask & SP_EVENT_TX_READY))
1353 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1354 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1355 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1356#else
1357 TRY(add_handle(event_set, port->fd, mask));
1358#endif
1359
1360 RETURN_OK();
1361}
1362
1363void sp_free_event_set(struct sp_event_set *event_set)
1364{
1365 TRACE("%p", event_set);
1366
1367 if (!event_set) {
1368 DEBUG("Null event set");
1369 RETURN();
1370 }
1371
1372 DEBUG("Freeing event set");
1373
1374 if (event_set->handles)
1375 free(event_set->handles);
1376 if (event_set->masks)
1377 free(event_set->masks);
1378
1379 free(event_set);
1380
1381 RETURN();
1382}
1383
1384enum sp_return sp_wait(struct sp_event_set *event_set, unsigned int timeout)
1385{
1386 TRACE("%p, %d", event_set, timeout);
1387
1388 if (!event_set)
1389 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1390
1391#ifdef _WIN32
1392 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1393 timeout ? timeout : INFINITE) == WAIT_FAILED)
1394 RETURN_FAIL("WaitForMultipleObjects() failed");
1395
1396 RETURN_OK();
1397#else
1398 struct timeval start, delta, now, end = {0, 0};
1399 int result, timeout_remaining;
1400 struct pollfd *pollfds;
1401 unsigned int i;
1402
1403 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1404 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1405
1406 for (i = 0; i < event_set->count; i++) {
1407 pollfds[i].fd = ((int *) event_set->handles)[i];
1408 pollfds[i].events = 0;
1409 pollfds[i].revents = 0;
1410 if (event_set->masks[i] & SP_EVENT_RX_READY)
1411 pollfds[i].events |= POLLIN;
1412 if (event_set->masks[i] & SP_EVENT_TX_READY)
1413 pollfds[i].events |= POLLOUT;
1414 if (event_set->masks[i] & SP_EVENT_ERROR)
1415 pollfds[i].events |= POLLERR;
1416 }
1417
1418 if (timeout) {
1419 /* Get time at start of operation. */
1420 gettimeofday(&start, NULL);
1421 /* Define duration of timeout. */
1422 delta.tv_sec = timeout / 1000;
1423 delta.tv_usec = (timeout % 1000) * 1000;
1424 /* Calculate time at which we should give up. */
1425 timeradd(&start, &delta, &end);
1426 }
1427
1428 /* Loop until an event occurs. */
1429 while (1)
1430 {
1431 if (timeout) {
1432 gettimeofday(&now, NULL);
1433 if (timercmp(&now, &end, >)) {
1434 DEBUG("wait timed out");
1435 break;
1436 }
1437 timersub(&end, &now, &delta);
1438 timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000;
1439 }
1440
1441 result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1);
1442
1443 if (result < 0) {
1444 if (errno == EINTR) {
1445 DEBUG("poll() call was interrupted, repeating");
1446 continue;
1447 } else {
1448 free(pollfds);
1449 RETURN_FAIL("poll() failed");
1450 }
1451 } else if (result == 0) {
1452 DEBUG("poll() timed out");
1453 break;
1454 } else {
1455 DEBUG("poll() completed");
1456 break;
1457 }
1458 }
1459
1460 free(pollfds);
1461 RETURN_OK();
1462#endif
1463}
1464
5cea279a 1465#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1466static enum sp_return get_baudrate(int fd, int *baudrate)
1467{
1468 void *data;
1469
c33efc48
ML		 1470 TRACE("%d, %p", fd, baudrate);
1471
ea667be7
ML		 1472 DEBUG("Getting baud rate");
1473
7a6d2196 1474 if (!(data = malloc(get_termios_size())))
c33efc48 1475 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1476
8d43110a
ML		 1477 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1478 free(data);
c33efc48 1479 RETURN_FAIL("getting termios failed");
8d43110a 1480 }
7a6d2196
ML		 1481
1482 *baudrate = get_termios_speed(data);
1483
8d43110a
ML		 1484 free(data);
1485
c33efc48 1486 RETURN_OK();
7a6d2196
ML		 1487}
1488
1489static enum sp_return set_baudrate(int fd, int baudrate)
1490{
1491 void *data;
1492
c33efc48
ML		 1493 TRACE("%d, %d", fd, baudrate);
1494
ea667be7
ML		 1495 DEBUG("Getting baud rate");
1496
7a6d2196 1497 if (!(data = malloc(get_termios_size())))
c33efc48 1498 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1499
8d43110a
ML		 1500 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1501 free(data);
c33efc48 1502 RETURN_FAIL("getting termios failed");
8d43110a 1503 }
7a6d2196 1504
ea667be7
ML		 1505 DEBUG("Setting baud rate");
1506
7a6d2196
ML		 1507 set_termios_speed(data, baudrate);
1508
8d43110a
ML		 1509 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1510 free(data);
c33efc48 1511 RETURN_FAIL("setting termios failed");
8d43110a
ML		 1512 }
1513
1514 free(data);
7a6d2196 1515
c33efc48 1516 RETURN_OK();
7a6d2196 1517}
5cea279a 1518#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1519
1520#ifdef USE_TERMIOX
bd791fe1 1521static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1522{
bd791fe1 1523 void *termx;
40978c2b 1524
bd791fe1 1525 TRACE("%d, %p", fd, data);
c33efc48 1526
ea667be7
ML		 1527 DEBUG("Getting advanced flow control");
1528
bd791fe1 1529 if (!(termx = malloc(get_termiox_size())))
c33efc48 1530 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1531
bd791fe1
ML		 1532 if (ioctl(fd, TCGETX, termx) < 0) {
1533 free(termx);
c33efc48 1534 RETURN_FAIL("getting termiox failed");
8d43110a 1535 }
40978c2b 1536
bd791fe1
ML		 1537 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1538 &data->dtr_flow, &data->dsr_flow);
40978c2b 1539
bd791fe1 1540 free(termx);
8d43110a 1541
c33efc48 1542 RETURN_OK();
40978c2b
ML		 1543}
1544
bd791fe1 1545static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1546{
bd791fe1 1547 void *termx;
40978c2b 1548
bd791fe1 1549 TRACE("%d, %p", fd, data);
c33efc48 1550
ea667be7
ML		 1551 DEBUG("Getting advanced flow control");
1552
bd791fe1 1553 if (!(termx = malloc(get_termiox_size())))
c33efc48 1554 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1555
bd791fe1
ML		 1556 if (ioctl(fd, TCGETX, termx) < 0) {
1557 free(termx);
c33efc48 1558 RETURN_FAIL("getting termiox failed");
8d43110a 1559 }
40978c2b 1560
ea667be7
ML		 1561 DEBUG("Setting advanced flow control");
1562
bd791fe1
ML		 1563 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1564 data->dtr_flow, data->dsr_flow);
40978c2b 1565
bd791fe1
ML		 1566 if (ioctl(fd, TCSETX, termx) < 0) {
1567 free(termx);
c33efc48 1568 RETURN_FAIL("setting termiox failed");
8d43110a
ML		 1569 }
1570
bd791fe1 1571 free(termx);
40978c2b 1572
c33efc48 1573 RETURN_OK();
40978c2b
ML		 1574}
1575#endif /* USE_TERMIOX */
7a6d2196 1576
eb6ed20f
ML		 1577static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1578 struct sp_port_config *config)
8094e4a0 1579{
da2748bf 1580 unsigned int i;
cbf628c7 1581
c33efc48
ML		 1582 TRACE("%p, %p, %p", port, data, config);
1583
ea667be7
ML		 1584 DEBUG("Getting configuration for port %s", port->name);
1585
8094e4a0 1586#ifdef _WIN32
e33ab9aa 1587 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1588 RETURN_FAIL("GetCommState() failed");
8094e4a0 1589
067417af 1590 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1591 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1592 config->baudrate = std_baudrates[i].value;
1593 break;
1594 }
1595 }
1596
1597 if (i == NUM_STD_BAUDRATES)
1598 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1599 config->baudrate = data->dcb.BaudRate;
067417af 1600
e33ab9aa 1601 config->bits = data->dcb.ByteSize;
067417af 1602
e33ab9aa
ML		 1603 if (data->dcb.fParity)
1604 switch (data->dcb.Parity) {
067417af
ML		 1605 case NOPARITY:
1606 config->parity = SP_PARITY_NONE;
1607 break;
e432ce60
ML		 1608 case ODDPARITY:
1609 config->parity = SP_PARITY_ODD;
1610 break;
067417af
ML		 1611 case EVENPARITY:
1612 config->parity = SP_PARITY_EVEN;
1613 break;
e432ce60
ML		 1614 case MARKPARITY:
1615 config->parity = SP_PARITY_MARK;
1616 break;
1617 case SPACEPARITY:
1618 config->parity = SP_PARITY_SPACE;
067417af
ML		 1619 break;
1620 default:
1621 config->parity = -1;
1622 }
1623 else
1624 config->parity = SP_PARITY_NONE;
1625
e33ab9aa 1626 switch (data->dcb.StopBits) {
067417af
ML		 1627 case ONESTOPBIT:
1628 config->stopbits = 1;
1629 break;
1630 case TWOSTOPBITS:
1631 config->stopbits = 2;
1632 break;
1633 default:
1634 config->stopbits = -1;
1635 }
1636
e33ab9aa 1637 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1638 case RTS_CONTROL_DISABLE:
1639 config->rts = SP_RTS_OFF;
1640 break;
1641 case RTS_CONTROL_ENABLE:
1642 config->rts = SP_RTS_ON;
1643 break;
1644 case RTS_CONTROL_HANDSHAKE:
1645 config->rts = SP_RTS_FLOW_CONTROL;
1646 break;
1647 default:
1648 config->rts = -1;
067417af
ML		 1649 }
1650
e33ab9aa 1651 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1652
e33ab9aa 1653 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1654 case DTR_CONTROL_DISABLE:
1655 config->dtr = SP_DTR_OFF;
1656 break;
1657 case DTR_CONTROL_ENABLE:
1658 config->dtr = SP_DTR_ON;
1659 break;
1660 case DTR_CONTROL_HANDSHAKE:
1661 config->dtr = SP_DTR_FLOW_CONTROL;
1662 break;
1663 default:
1664 config->dtr = -1;
067417af
ML		 1665 }
1666
e33ab9aa
ML		 1667 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1668
c6754b45
ML		 1669 if (data->dcb.fInX) {
1670 if (data->dcb.fOutX)
1671 config->xon_xoff = SP_XONXOFF_INOUT;
1672 else
1673 config->xon_xoff = SP_XONXOFF_IN;
1674 } else {
1675 if (data->dcb.fOutX)
1676 config->xon_xoff = SP_XONXOFF_OUT;
1677 else
1678 config->xon_xoff = SP_XONXOFF_DISABLED;
1679 }
1680
e33ab9aa
ML		 1681#else // !_WIN32
1682
1683 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1684 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1685
1686 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1687 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1688
1689#ifdef USE_TERMIOX
bd791fe1 1690 int ret = get_flow(port->fd, data);
68ec29db
ML		 1691
1692 if (ret == SP_ERR_FAIL && errno == EINVAL)
1693 data->termiox_supported = 0;
1694 else if (ret < 0)
c33efc48 1695 RETURN_CODEVAL(ret);
68ec29db
ML		 1696 else
1697 data->termiox_supported = 1;
1698#else
1699 data->termiox_supported = 0;
40978c2b
ML		 1700#endif
1701
067417af 1702 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1703 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1704 config->baudrate = std_baudrates[i].value;
1705 break;
1706 }
1707 }
1708
31b3a8f5
MH		 1709 if (i == NUM_STD_BAUDRATES) {
1710#ifdef __APPLE__
1711 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1712#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1713 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1714#else
067417af 1715 config->baudrate = -1;
31b3a8f5
MH		 1716#endif
1717 }
067417af 1718
e33ab9aa 1719 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1720 case CS8:
1721 config->bits = 8;
1722 break;
1723 case CS7:
1724 config->bits = 7;
1725 break;
1726 case CS6:
1727 config->bits = 6;
1728 break;
1729 case CS5:
1730 config->bits = 5;
1731 break;
1732 default:
1733 config->bits = -1;
1734 }
1735
e33ab9aa 1736 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1737 config->parity = SP_PARITY_NONE;
e33ab9aa 1738 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1739 config->parity = -1;
c3e05092 1740#ifdef CMSPAR
e432ce60
ML		 1741 else if (data->term.c_cflag & CMSPAR)
1742 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1743#endif
067417af 1744 else
e33ab9aa 1745 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1746
e33ab9aa 1747 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1748
e33ab9aa 1749 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1750 config->rts = SP_RTS_FLOW_CONTROL;
1751 config->cts = SP_CTS_FLOW_CONTROL;
1752 } else {
bd791fe1 1753 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1754 config->rts = SP_RTS_FLOW_CONTROL;
1755 else
1756 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1757
bd791fe1 1758 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1759 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1760 }
1761
bd791fe1 1762 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1763 config->dtr = SP_DTR_FLOW_CONTROL;
1764 else
1765 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1766
bd791fe1 1767 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1768 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1769
e29b93a5
ML		 1770 if (data->term.c_iflag & IXOFF) {
1771 if (data->term.c_iflag & IXON)
1772 config->xon_xoff = SP_XONXOFF_INOUT;
1773 else
1774 config->xon_xoff = SP_XONXOFF_IN;
1775 } else {
1776 if (data->term.c_iflag & IXON)
1777 config->xon_xoff = SP_XONXOFF_OUT;
1778 else
1779 config->xon_xoff = SP_XONXOFF_DISABLED;
1780 }
067417af
ML		 1781#endif
1782
c33efc48 1783 RETURN_OK();
067417af
ML		 1784}
1785
7a6d2196 1786static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1787 const struct sp_port_config *config)
18fc2dd1 1788{
e33ab9aa 1789 unsigned int i;
31b3a8f5
MH		 1790#ifdef __APPLE__
1791 BAUD_TYPE baud_nonstd;
1792
1793 baud_nonstd = B0;
1794#endif
5cea279a 1795#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1796 int baud_nonstd = 0;
1797#endif
18fc2dd1 1798
c33efc48
ML		 1799 TRACE("%p, %p, %p", port, data, config);
1800
ea667be7
ML		 1801 DEBUG("Setting configuration for port %s", port->name);
1802
e33ab9aa 1803#ifdef _WIN32
eac329d2 1804 if (config->baudrate >= 0) {
e33ab9aa
ML		 1805 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1806 if (config->baudrate == std_baudrates[i].value) {
1807 data->dcb.BaudRate = std_baudrates[i].index;
1808 break;
1809 }
1810 }
18fc2dd1 1811
e33ab9aa
ML		 1812 if (i == NUM_STD_BAUDRATES)
1813 data->dcb.BaudRate = config->baudrate;
1814 }
18fc2dd1 1815
e33ab9aa
ML		 1816 if (config->bits >= 0)
1817 data->dcb.ByteSize = config->bits;
1818
1819 if (config->parity >= 0) {
1820 switch (config->parity) {
e33ab9aa
ML		 1821 case SP_PARITY_NONE:
1822 data->dcb.Parity = NOPARITY;
1823 break;
e432ce60
ML		 1824 case SP_PARITY_ODD:
1825 data->dcb.Parity = ODDPARITY;
1826 break;
e33ab9aa
ML		 1827 case SP_PARITY_EVEN:
1828 data->dcb.Parity = EVENPARITY;
1829 break;
e432ce60
ML		 1830 case SP_PARITY_MARK:
1831 data->dcb.Parity = MARKPARITY;
1832 break;
1833 case SP_PARITY_SPACE:
1834 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1835 break;
1836 default:
c33efc48 1837 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1838 }
18fc2dd1
ML		 1839 }
1840
e33ab9aa
ML		 1841 if (config->stopbits >= 0) {
1842 switch (config->stopbits) {
1843 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1844 case 1:
1845 data->dcb.StopBits = ONESTOPBIT;
1846 break;
1847 case 2:
1848 data->dcb.StopBits = TWOSTOPBITS;
1849 break;
1850 default:
c33efc48 1851 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1852 }
1853 }
1854
1855 if (config->rts >= 0) {
1856 switch (config->rts) {
1857 case SP_RTS_OFF:
1858 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1859 break;
1860 case SP_RTS_ON:
1861 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1862 break;
1863 case SP_RTS_FLOW_CONTROL:
1864 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1865 break;
1866 default:
c33efc48 1867 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1868 }
1869 }
1870
1871 if (config->cts >= 0) {
1872 switch (config->cts) {
1873 case SP_CTS_IGNORE:
1874 data->dcb.fOutxCtsFlow = FALSE;
1875 break;
1876 case SP_CTS_FLOW_CONTROL:
1877 data->dcb.fOutxCtsFlow = TRUE;
1878 break;
1879 default:
c33efc48 1880 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1881 }
1882 }
1883
1884 if (config->dtr >= 0) {
1885 switch (config->dtr) {
1886 case SP_DTR_OFF:
1887 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1888 break;
1889 case SP_DTR_ON:
1890 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1891 break;
1892 case SP_DTR_FLOW_CONTROL:
1893 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1894 break;
1895 default:
c33efc48 1896 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1897 }
1898 }
1899
1900 if (config->dsr >= 0) {
1901 switch (config->dsr) {
1902 case SP_DSR_IGNORE:
1903 data->dcb.fOutxDsrFlow = FALSE;
1904 break;
1905 case SP_DSR_FLOW_CONTROL:
1906 data->dcb.fOutxDsrFlow = TRUE;
1907 break;
1908 default:
c33efc48 1909 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1910 }
18fc2dd1
ML		 1911 }
1912
e33ab9aa
ML		 1913 if (config->xon_xoff >= 0) {
1914 switch (config->xon_xoff) {
1915 case SP_XONXOFF_DISABLED:
1916 data->dcb.fInX = FALSE;
1917 data->dcb.fOutX = FALSE;
1918 break;
1919 case SP_XONXOFF_IN:
1920 data->dcb.fInX = TRUE;
1921 data->dcb.fOutX = FALSE;
1922 break;
1923 case SP_XONXOFF_OUT:
1924 data->dcb.fInX = FALSE;
1925 data->dcb.fOutX = TRUE;
1926 break;
1927 case SP_XONXOFF_INOUT:
1928 data->dcb.fInX = TRUE;
1929 data->dcb.fOutX = TRUE;
1930 break;
1931 default:
c33efc48 1932 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1933 }
1934 }
1935
1936 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1937 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1938
31b3a8f5 1939#else /* !_WIN32 */
e33ab9aa 1940
7a6d2196
ML		 1941 int controlbits;
1942
eac329d2 1943 if (config->baudrate >= 0) {
e33ab9aa
ML		 1944 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1945 if (config->baudrate == std_baudrates[i].value) {
1946 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1947 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1948
1949 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1950 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1951 break;
1952 }
1953 }
1954
31b3a8f5
MH		 1955 /* Non-standard baud rate */
1956 if (i == NUM_STD_BAUDRATES) {
1957#ifdef __APPLE__
24abdb68 1958 /* Set "dummy" baud rate. */
31b3a8f5 1959 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1960 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1961 baud_nonstd = config->baudrate;
5cea279a 1962#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1963 baud_nonstd = 1;
31b3a8f5 1964#else
c33efc48 1965 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1966#endif
1967 }
e33ab9aa
ML		 1968 }
1969
1970 if (config->bits >= 0) {
1971 data->term.c_cflag &= ~CSIZE;
1972 switch (config->bits) {
1973 case 8:
1974 data->term.c_cflag |= CS8;
1975 break;
1976 case 7:
1977 data->term.c_cflag |= CS7;
1978 break;
1979 case 6:
1980 data->term.c_cflag |= CS6;
1981 break;
23922313
UH		 1982 case 5:
1983 data->term.c_cflag |= CS5;
1984 break;
e33ab9aa 1985 default:
c33efc48 1986 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1987 }
1988 }
1989
1990 if (config->parity >= 0) {
1991 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1992 data->term.c_cflag &= ~(PARENB | PARODD);
1993#ifdef CMSPAR
1994 data->term.c_cflag &= ~CMSPAR;
1995#endif
e33ab9aa
ML		 1996 switch (config->parity) {
1997 case SP_PARITY_NONE:
1998 data->term.c_iflag |= IGNPAR;
1999 break;
2000 case SP_PARITY_EVEN:
2001 data->term.c_cflag |= PARENB;
2002 break;
2003 case SP_PARITY_ODD:
2004 data->term.c_cflag |= PARENB | PARODD;
2005 break;
afb518f0 2006#ifdef CMSPAR
e432ce60 2007 case SP_PARITY_MARK:
c3e05092 2008 data->term.c_cflag |= PARENB | PARODD;
c3e05092 2009 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 2010 break;
2011 case SP_PARITY_SPACE:
c3e05092 2012 data->term.c_cflag |= PARENB;
c3e05092 2013 data->term.c_cflag |= CMSPAR;
e432ce60 2014 break;
afb518f0
ML		 2015#else
2016 case SP_PARITY_MARK:
2017 case SP_PARITY_SPACE:
2018 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
2019#endif
e33ab9aa 2020 default:
c33efc48 2021 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 2022 }
2023 }
2024
2025 if (config->stopbits >= 0) {
2026 data->term.c_cflag &= ~CSTOPB;
2027 switch (config->stopbits) {
2028 case 1:
2029 data->term.c_cflag &= ~CSTOPB;
2030 break;
2031 case 2:
2032 data->term.c_cflag |= CSTOPB;
2033 break;
2034 default:
c33efc48 2035 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 2036 }
2037 }
2038
eac329d2 2039 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 2040 if (data->termiox_supported) {
bd791fe1 2041 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 2042 switch (config->rts) {
2043 case SP_RTS_OFF:
2044 case SP_RTS_ON:
2045 controlbits = TIOCM_RTS;
2046 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2047 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 2048 break;
2049 case SP_RTS_FLOW_CONTROL:
bd791fe1 2050 data->rts_flow = 1;
68ec29db
ML		 2051 break;
2052 default:
2053 break;
e33ab9aa 2054 }
68ec29db 2055 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 2056 data->cts_flow = 1;
e33ab9aa 2057
bd791fe1 2058 if (data->rts_flow && data->cts_flow)
e33ab9aa 2059 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 2060 else
2061 data->term.c_iflag &= ~CRTSCTS;
2062 } else {
2063 /* Asymmetric use of RTS/CTS not supported. */
2064 if (data->term.c_iflag & CRTSCTS) {
2065 /* Flow control can only be disabled for both RTS & CTS together. */
2066 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
2067 if (config->cts != SP_CTS_IGNORE)
c33efc48 2068 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 2069 }
2070 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
2071 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 2072 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 2073 }
e33ab9aa 2074 } else {
68ec29db
ML		 2075 /* Flow control can only be enabled for both RTS & CTS together. */
2076 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
2077 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 2078 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 2079 }
2080
2081 if (config->rts >= 0) {
2082 if (config->rts == SP_RTS_FLOW_CONTROL) {
2083 data->term.c_iflag |= CRTSCTS;
2084 } else {
2085 controlbits = TIOCM_RTS;
2086 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
2087 &controlbits) < 0)
c33efc48 2088 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 2089 }
e33ab9aa
ML		 2090 }
2091 }
2092 }
2093
eac329d2 2094 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 2095 if (data->termiox_supported) {
bd791fe1 2096 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 2097 switch (config->dtr) {
2098 case SP_DTR_OFF:
2099 case SP_DTR_ON:
2100 controlbits = TIOCM_DTR;
2101 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2102 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 2103 break;
2104 case SP_DTR_FLOW_CONTROL:
bd791fe1 2105 data->dtr_flow = 1;
68ec29db
ML		 2106 break;
2107 default:
2108 break;
2109 }
2110 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 2111 data->dsr_flow = 1;
68ec29db
ML		 2112 } else {
2113 /* DTR/DSR flow control not supported. */
2114 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 2115 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 2116
68ec29db
ML		 2117 if (config->dtr >= 0) {
2118 controlbits = TIOCM_DTR;
2119 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
2120 &controlbits) < 0)
c33efc48 2121 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 2122 }
e33ab9aa
ML		 2123 }
2124 }
2125
2126 if (config->xon_xoff >= 0) {
2127 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
2128 switch (config->xon_xoff) {
2129 case SP_XONXOFF_DISABLED:
2130 break;
2131 case SP_XONXOFF_IN:
2132 data->term.c_iflag |= IXOFF;
2133 break;
2134 case SP_XONXOFF_OUT:
2135 data->term.c_iflag |= IXON | IXANY;
2136 break;
2137 case SP_XONXOFF_INOUT:
2138 data->term.c_iflag |= IXON | IXOFF | IXANY;
2139 break;
2140 default:
c33efc48 2141 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2142 }
2143 }
2144
3f5c06d0 2145 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2146 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2147
2148#ifdef __APPLE__
2149 if (baud_nonstd != B0) {
2150 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2151 RETURN_FAIL("IOSSIOSPEED ioctl failed");
31b3a8f5
MH		 2152 /* Set baud rates in data->term to correct, but incompatible
2153 * with tcsetattr() value, same as delivered by tcgetattr(). */
2154 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2155 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2156 }
7a6d2196 2157#elif defined(__linux__)
5cea279a 2158#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2159 if (baud_nonstd)
2160 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2161#endif
40978c2b 2162#ifdef USE_TERMIOX
68ec29db 2163 if (data->termiox_supported)
bd791fe1 2164 TRY(set_flow(port->fd, data));
40978c2b 2165#endif
7a6d2196 2166#endif
31b3a8f5
MH		 2167
2168#endif /* !_WIN32 */
e33ab9aa 2169
c33efc48 2170 RETURN_OK();
e33ab9aa
ML		 2171}
2172
9b1502ef
ML		 2173enum sp_return sp_new_config(struct sp_port_config **config_ptr)
2174{
59131d60 2175 struct sp_port_config *config;
9b1502ef 2176
00d8c56d
UH		 2177 TRACE("%p", config_ptr);
2178
9b1502ef
ML		 2179 if (!config_ptr)
2180 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2181
59131d60
ML		 2182 *config_ptr = NULL;
2183
2184 if (!(config = malloc(sizeof(struct sp_port_config))))
9b1502ef
ML		 2185 RETURN_ERROR(SP_ERR_MEM, "config malloc failed");
2186
59131d60
ML		 2187 config->baudrate = -1;
2188 config->bits = -1;
2189 config->parity = -1;
2190 config->stopbits = -1;
2191 config->rts = -1;
2192 config->cts = -1;
2193 config->dtr = -1;
2194 config->dsr = -1;
2195
2196 *config_ptr = config;
2197
9b1502ef
ML		 2198 RETURN_OK();
2199}
2200
2201void sp_free_config(struct sp_port_config *config)
2202{
2203 TRACE("%p", config);
2204
2205 if (!config)
2206 DEBUG("Null config");
2207 else
2208 free(config);
2209
2210 RETURN();
2211}
2212
70cd37de
ML		 2213enum sp_return sp_get_config(struct sp_port *port, struct sp_port_config *config)
2214{
2215 struct port_data data;
2216
2217 TRACE("%p, %p", port, config);
2218
2219 CHECK_OPEN_PORT();
2220
2221 if (!config)
9b1502ef 2222 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2223
2224 TRY(get_config(port, &data, config));
2225
2226 RETURN_OK();
2227}
2228
eb6ed20f 2229enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config)
e33ab9aa 2230{
8f189c4c 2231 struct port_data data;
e33ab9aa
ML		 2232 struct sp_port_config prev_config;
2233
c33efc48
ML		 2234 TRACE("%p, %p", port, config);
2235
dec10e31 2236 CHECK_OPEN_PORT();
823690ae
ML		 2237
2238 if (!config)
c33efc48 2239 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2240
e33ab9aa
ML		 2241 TRY(get_config(port, &data, &prev_config));
2242 TRY(set_config(port, &data, config));
74510d4b 2243
c33efc48 2244 RETURN_OK();
74510d4b
ML		 2245}
2246
9b1502ef
ML		 2247#define CREATE_ACCESSORS(x, type) \
2248enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2249 struct port_data data; \
e33ab9aa 2250 struct sp_port_config config; \
c33efc48 2251 TRACE("%p, %d", port, x); \
dec10e31 2252 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2253 TRY(get_config(port, &data, &config)); \
2254 config.x = x; \
2255 TRY(set_config(port, &data, &config)); \
c33efc48 2256 RETURN_OK(); \
9b1502ef
ML		 2257} \
2258enum sp_return sp_get_config_##x(const struct sp_port_config *config, type *x) { \
00d8c56d 2259 TRACE("%p, %p", config, x); \
9b1502ef
ML		 2260 if (!config) \
2261 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2262 *x = config->x; \
2263 RETURN_OK(); \
2264} \
2265enum sp_return sp_set_config_##x(struct sp_port_config *config, type x) { \
2266 TRACE("%p, %d", config, x); \
2267 if (!config) \
2268 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2269 config->x = x; \
2270 RETURN_OK(); \
9069c2fb
ML		 2271}
2272
9b1502ef
ML		 2273CREATE_ACCESSORS(baudrate, int)
2274CREATE_ACCESSORS(bits, int)
2275CREATE_ACCESSORS(parity, enum sp_parity)
2276CREATE_ACCESSORS(stopbits, int)
2277CREATE_ACCESSORS(rts, enum sp_rts)
2278CREATE_ACCESSORS(cts, enum sp_cts)
2279CREATE_ACCESSORS(dtr, enum sp_dtr)
2280CREATE_ACCESSORS(dsr, enum sp_dsr)
2281CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2282
2283enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, enum sp_flowcontrol flowcontrol)
e33ab9aa 2284{
9b1502ef
ML		 2285 if (!config)
2286 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2287
2288 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2289 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2290
e33ab9aa 2291 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2292 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2293 else
9b1502ef 2294 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2295
2296 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2297 config->rts = SP_RTS_FLOW_CONTROL;
2298 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2299 } else {
9b1502ef
ML		 2300 if (config->rts == SP_RTS_FLOW_CONTROL)
2301 config->rts = SP_RTS_ON;
2302 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2303 }
2304
2305 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2306 config->dtr = SP_DTR_FLOW_CONTROL;
2307 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2308 } else {
9b1502ef
ML		 2309 if (config->dtr == SP_DTR_FLOW_CONTROL)
2310 config->dtr = SP_DTR_ON;
2311 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2312 }
2313
9b1502ef
ML		 2314 RETURN_OK();
2315}
2316
2317enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol)
2318{
2319 struct port_data data;
2320 struct sp_port_config config;
2321
2322 TRACE("%p, %d", port, flowcontrol);
2323
2324 CHECK_OPEN_PORT();
2325
2326 TRY(get_config(port, &data, &config));
2327
2328 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2329
e33ab9aa
ML		 2330 TRY(set_config(port, &data, &config));
2331
c33efc48 2332 RETURN_OK();
e33ab9aa
ML		 2333}
2334
8cf7c697
ML		 2335enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signals)
2336{
c33efc48
ML		 2337 TRACE("%p, %p", port, signals);
2338
dec10e31 2339 CHECK_OPEN_PORT();
8cf7c697
ML		 2340
2341 if (!signals)
c33efc48 2342 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2343
ea667be7
ML		 2344 DEBUG("Getting control signals for port %s", port->name);
2345
8cf7c697
ML		 2346 *signals = 0;
2347#ifdef _WIN32
2348 DWORD bits;
2349 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2350 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2351 if (bits & MS_CTS_ON)
2352 *signals |= SP_SIG_CTS;
2353 if (bits & MS_DSR_ON)
2354 *signals |= SP_SIG_DSR;
8cf7c697 2355 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2356 *signals |= SP_SIG_DCD;
2357 if (bits & MS_RING_ON)
8cf7c697
ML		 2358 *signals |= SP_SIG_RI;
2359#else
2360 int bits;
2361 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2362 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2363 if (bits & TIOCM_CTS)
2364 *signals |= SP_SIG_CTS;
2365 if (bits & TIOCM_DSR)
2366 *signals |= SP_SIG_DSR;
2367 if (bits & TIOCM_CAR)
2368 *signals |= SP_SIG_DCD;
2369 if (bits & TIOCM_RNG)
2370 *signals |= SP_SIG_RI;
2371#endif
c33efc48 2372 RETURN_OK();
8cf7c697
ML		 2373}
2374
90cc3ee6
ML		 2375enum sp_return sp_start_break(struct sp_port *port)
2376{
c33efc48
ML		 2377 TRACE("%p", port);
2378
dec10e31 2379 CHECK_OPEN_PORT();
90cc3ee6
ML		 2380#ifdef _WIN32
2381 if (SetCommBreak(port->hdl) == 0)
c33efc48 2382 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2383#else
2384 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2385 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2386#endif
2387
c33efc48 2388 RETURN_OK();
90cc3ee6
ML		 2389}
2390
2391enum sp_return sp_end_break(struct sp_port *port)
2392{
c33efc48
ML		 2393 TRACE("%p", port);
2394
dec10e31 2395 CHECK_OPEN_PORT();
90cc3ee6
ML		 2396#ifdef _WIN32
2397 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2398 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2399#else
2400 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2401 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2402#endif
2403
c33efc48 2404 RETURN_OK();
90cc3ee6
ML		 2405}
2406
74510d4b
ML		 2407int sp_last_error_code(void)
2408{
c33efc48 2409 TRACE("");
74510d4b 2410#ifdef _WIN32
c33efc48 2411 RETURN_VALUE("%d", GetLastError());
74510d4b 2412#else
c33efc48 2413 RETURN_VALUE("%d", errno);
74510d4b
ML		 2414#endif
2415}
2416
74510d4b
ML		 2417char *sp_last_error_message(void)
2418{
c33efc48
ML		 2419 TRACE("");
2420
74510d4b
ML		 2421#ifdef _WIN32
2422 LPVOID message;
2423 DWORD error = GetLastError();
2424
2425 FormatMessage(
2426 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2427 FORMAT_MESSAGE_FROM_SYSTEM |
2428 FORMAT_MESSAGE_IGNORE_INSERTS,
2429 NULL,
2430 error,
2431 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2432 (LPTSTR) &message,
2433 0, NULL );
2434
c33efc48 2435 RETURN_VALUE("%s", message);
74510d4b 2436#else
c33efc48 2437 RETURN_VALUE("%s", strerror(errno));
74510d4b
ML		 2438#endif
2439}
2440
74510d4b
ML		 2441void sp_free_error_message(char *message)
2442{
c33efc48
ML		 2443 TRACE("%s", message);
2444
74510d4b
ML		 2445#ifdef _WIN32
2446 LocalFree(message);
64eec30d
ML		 2447#else
2448 (void)message;
74510d4b 2449#endif
c33efc48
ML		 2450
2451 RETURN();
74510d4b 2452}
863b35e6
ML		 2453
2454void sp_set_debug_handler(void (*handler)(const char *format, ...))
2455{
c33efc48
ML		 2456 TRACE("%p", handler);
2457
863b35e6 2458 sp_debug_handler = handler;
c33efc48
ML		 2459
2460 RETURN();
863b35e6
ML		 2461}
2462
2463void sp_default_debug_handler(const char *format, ...)
2464{
2465 va_list args;
2466 va_start(args, format);
2467 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2468 fputs("sp: ", stderr);
863b35e6
ML		 2469 vfprintf(stderr, format, args);
2470 }
2471 va_end(args);
2472}
524b0e14
UH		 2473
2474int sp_get_major_package_version(void)
2475{
2476 return SP_PACKAGE_VERSION_MAJOR;
2477}
2478
2479int sp_get_minor_package_version(void)
2480{
2481 return SP_PACKAGE_VERSION_MINOR;
2482}
2483
2484int sp_get_micro_package_version(void)
2485{
2486 return SP_PACKAGE_VERSION_MICRO;
2487}
2488
2489const char *sp_get_package_version_string(void)
2490{
2491 return SP_PACKAGE_VERSION_STRING;
2492}
2493
2494int sp_get_current_lib_version(void)
2495{
2496 return SP_LIB_VERSION_CURRENT;
2497}
2498
2499int sp_get_revision_lib_version(void)
2500{
2501 return SP_LIB_VERSION_REVISION;
2502}
2503
2504int sp_get_age_lib_version(void)
2505{
2506 return SP_LIB_VERSION_AGE;
2507}
2508
2509const char *sp_get_lib_version_string(void)
2510{
2511 return SP_LIB_VERSION_STRING;
2512}
2513
2514/** @} */
Serial port access library