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aliguori6f97dba2008-10-31 18:49:55 +00001/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
Peter Maydelld38ea872016-01-29 17:50:05 +000024#include "qemu/osdep.h"
aliguori6f97dba2008-10-31 18:49:55 +000025#include "qemu-common.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010026#include "monitor/monitor.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010027#include "sysemu/sysemu.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010028#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010029#include "qemu/timer.h"
Paolo Bonzinidccfcd02013-04-08 16:55:25 +020030#include "sysemu/char.h"
aurel32cf3ebac2008-11-01 00:53:09 +000031#include "hw/usb.h"
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -030032#include "qmp-commands.h"
Corey Minyardcfb429c2014-10-02 11:17:35 -050033#include "qapi/qmp-input-visitor.h"
34#include "qapi/qmp-output-visitor.h"
35#include "qapi-visit.h"
Daniel P. Berrangee9cf2fe2015-11-23 15:29:59 +000036#include "qemu/base64.h"
Daniel P. Berrange9894dc02016-01-19 11:14:29 +000037#include "io/channel-socket.h"
38#include "io/channel-file.h"
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +000039#include "io/channel-tls.h"
aliguori6f97dba2008-10-31 18:49:55 +000040
aliguori6f97dba2008-10-31 18:49:55 +000041#include <zlib.h>
42
43#ifndef _WIN32
44#include <sys/times.h>
45#include <sys/wait.h>
46#include <termios.h>
47#include <sys/mman.h>
48#include <sys/ioctl.h>
blueswir124646c72008-11-07 16:55:48 +000049#include <sys/resource.h>
aliguori6f97dba2008-10-31 18:49:55 +000050#include <sys/socket.h>
51#include <netinet/in.h>
blueswir124646c72008-11-07 16:55:48 +000052#include <net/if.h>
blueswir124646c72008-11-07 16:55:48 +000053#include <arpa/inet.h>
aliguori6f97dba2008-10-31 18:49:55 +000054#include <netdb.h>
55#include <sys/select.h>
Juan Quintela71e72a12009-07-27 16:12:56 +020056#ifdef CONFIG_BSD
Michael Tokarev3294ce12012-06-02 23:43:33 +040057#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
58#include <dev/ppbus/ppi.h>
59#include <dev/ppbus/ppbconf.h>
60#elif defined(__DragonFly__)
61#include <dev/misc/ppi/ppi.h>
62#include <bus/ppbus/ppbconf.h>
63#endif
Aurelien Jarnobbe813a2009-11-30 15:42:59 +010064#else
aliguori6f97dba2008-10-31 18:49:55 +000065#ifdef __linux__
aliguori6f97dba2008-10-31 18:49:55 +000066#include <linux/ppdev.h>
67#include <linux/parport.h>
68#endif
69#ifdef __sun__
aliguori6f97dba2008-10-31 18:49:55 +000070#include <sys/ethernet.h>
71#include <sys/sockio.h>
72#include <netinet/arp.h>
73#include <netinet/in.h>
74#include <netinet/in_systm.h>
75#include <netinet/ip.h>
76#include <netinet/ip_icmp.h> // must come after ip.h
77#include <netinet/udp.h>
78#include <netinet/tcp.h>
aliguori6f97dba2008-10-31 18:49:55 +000079#endif
80#endif
81#endif
82
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010083#include "qemu/sockets.h"
Alon Levycbcc6332011-01-19 10:49:50 +020084#include "ui/qemu-spice.h"
aliguori6f97dba2008-10-31 18:49:55 +000085
Amit Shah9bd78542009-11-03 19:59:54 +053086#define READ_BUF_LEN 4096
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +030087#define READ_RETRIES 10
Michael S. Tsirkinc4095722014-11-02 18:48:32 +020088#define TCP_MAX_FDS 16
Amit Shah9bd78542009-11-03 19:59:54 +053089
aliguori6f97dba2008-10-31 18:49:55 +000090/***********************************************************/
Corey Minyardcfb429c2014-10-02 11:17:35 -050091/* Socket address helpers */
Corey Minyardcfb429c2014-10-02 11:17:35 -050092
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +000093static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
94 bool is_listen, bool is_telnet)
Corey Minyard16cc4ff2014-10-02 11:17:36 -050095{
Eric Blake130257d2015-10-26 16:34:57 -060096 switch (addr->type) {
Corey Minyard16cc4ff2014-10-02 11:17:36 -050097 case SOCKET_ADDRESS_KIND_INET:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +000098 return g_strdup_printf("%s%s:%s:%s%s", prefix,
99 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
100 addr->u.inet->port, is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500101 break;
102 case SOCKET_ADDRESS_KIND_UNIX:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000103 return g_strdup_printf("%sunix:%s%s", prefix,
104 addr->u.q_unix->path,
105 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500106 break;
107 case SOCKET_ADDRESS_KIND_FD:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000108 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd->str,
109 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500110 break;
111 default:
112 abort();
113 }
114}
115
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000116static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
117 struct sockaddr_storage *ps, socklen_t ps_len,
118 bool is_listen, bool is_telnet)
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500119{
Corey Minyard01ca5192014-10-02 11:17:38 -0500120 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
121 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500122 const char *left = "", *right = "";
123
124 switch (ss->ss_family) {
125#ifndef _WIN32
126 case AF_UNIX:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000127 return g_strdup_printf("unix:%s%s",
128 ((struct sockaddr_un *)(ss))->sun_path,
129 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500130#endif
131 case AF_INET6:
132 left = "[";
133 right = "]";
134 /* fall through */
135 case AF_INET:
Corey Minyard01ca5192014-10-02 11:17:38 -0500136 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
137 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
138 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
139 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000140 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
141 is_telnet ? "telnet" : "tcp",
142 left, shost, right, sserv,
143 is_listen ? ",server" : "",
144 left, phost, right, pserv);
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500145
146 default:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000147 return g_strdup_printf("unknown");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500148 }
149}
150
Corey Minyardcfb429c2014-10-02 11:17:35 -0500151/***********************************************************/
aliguori6f97dba2008-10-31 18:49:55 +0000152/* character device */
153
Blue Swirl72cf2d42009-09-12 07:36:22 +0000154static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
155 QTAILQ_HEAD_INITIALIZER(chardevs);
aliguori2970a6c2009-03-05 22:59:58 +0000156
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000157static void qemu_chr_free_common(CharDriverState *chr);
158
159CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
Paolo Bonzinidb39fcf2014-06-18 08:43:55 +0200160{
161 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
Paolo Bonzinif3db17b2014-06-25 09:04:57 +0200162 qemu_mutex_init(&chr->chr_write_lock);
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000163
164 if (backend->has_logfile) {
165 int flags = O_WRONLY | O_CREAT;
166 if (backend->has_logappend &&
167 backend->logappend) {
168 flags |= O_APPEND;
169 } else {
170 flags |= O_TRUNC;
171 }
172 chr->logfd = qemu_open(backend->logfile, flags, 0666);
173 if (chr->logfd < 0) {
174 error_setg_errno(errp, errno,
175 "Unable to open logfile %s",
176 backend->logfile);
177 g_free(chr);
178 return NULL;
179 }
180 } else {
181 chr->logfd = -1;
182 }
183
Paolo Bonzinidb39fcf2014-06-18 08:43:55 +0200184 return chr;
185}
186
Hans de Goedea425d232011-11-19 10:22:43 +0100187void qemu_chr_be_event(CharDriverState *s, int event)
aliguori6f97dba2008-10-31 18:49:55 +0000188{
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200189 /* Keep track if the char device is open */
190 switch (event) {
191 case CHR_EVENT_OPENED:
Hans de Goede16665b92013-03-26 11:07:53 +0100192 s->be_open = 1;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200193 break;
194 case CHR_EVENT_CLOSED:
Hans de Goede16665b92013-03-26 11:07:53 +0100195 s->be_open = 0;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200196 break;
197 }
198
aliguori6f97dba2008-10-31 18:49:55 +0000199 if (!s->chr_event)
200 return;
201 s->chr_event(s->handler_opaque, event);
202}
203
Hans de Goedefee204f2013-03-26 11:07:54 +0100204void qemu_chr_be_generic_open(CharDriverState *s)
aliguori6f97dba2008-10-31 18:49:55 +0000205{
Michael Rothbd5c51e2013-06-07 15:19:53 -0500206 qemu_chr_be_event(s, CHR_EVENT_OPENED);
aliguori6f97dba2008-10-31 18:49:55 +0000207}
208
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000209
210/* Not reporting errors from writing to logfile, as logs are
211 * defined to be "best effort" only */
212static void qemu_chr_fe_write_log(CharDriverState *s,
213 const uint8_t *buf, size_t len)
214{
215 size_t done = 0;
216 ssize_t ret;
217
218 if (s->logfd < 0) {
219 return;
220 }
221
222 while (done < len) {
223 do {
224 ret = write(s->logfd, buf + done, len - done);
225 if (ret == -1 && errno == EAGAIN) {
226 g_usleep(100);
227 }
228 } while (ret == -1 && errno == EAGAIN);
229
230 if (ret <= 0) {
231 return;
232 }
233 done += ret;
234 }
235}
236
Anthony Liguori2cc6e0a2011-08-15 11:17:28 -0500237int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
aliguori6f97dba2008-10-31 18:49:55 +0000238{
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200239 int ret;
240
241 qemu_mutex_lock(&s->chr_write_lock);
242 ret = s->chr_write(s, buf, len);
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000243
244 if (ret > 0) {
245 qemu_chr_fe_write_log(s, buf, ret);
246 }
247
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200248 qemu_mutex_unlock(&s->chr_write_lock);
249 return ret;
aliguori6f97dba2008-10-31 18:49:55 +0000250}
251
Anthony Liguoricd187202013-03-26 10:04:17 -0500252int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
253{
254 int offset = 0;
Igor Mammedov09313042014-06-25 10:00:41 +0200255 int res = 0;
Anthony Liguoricd187202013-03-26 10:04:17 -0500256
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200257 qemu_mutex_lock(&s->chr_write_lock);
Anthony Liguoricd187202013-03-26 10:04:17 -0500258 while (offset < len) {
259 do {
260 res = s->chr_write(s, buf + offset, len - offset);
261 if (res == -1 && errno == EAGAIN) {
262 g_usleep(100);
263 }
264 } while (res == -1 && errno == EAGAIN);
265
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200266 if (res <= 0) {
Anthony Liguoricd187202013-03-26 10:04:17 -0500267 break;
268 }
269
Anthony Liguoricd187202013-03-26 10:04:17 -0500270 offset += res;
271 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000272 if (offset > 0) {
273 qemu_chr_fe_write_log(s, buf, offset);
274 }
275
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200276 qemu_mutex_unlock(&s->chr_write_lock);
Anthony Liguoricd187202013-03-26 10:04:17 -0500277
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200278 if (res < 0) {
279 return res;
280 }
Anthony Liguoricd187202013-03-26 10:04:17 -0500281 return offset;
282}
283
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300284int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
285{
286 int offset = 0, counter = 10;
287 int res;
288
289 if (!s->chr_sync_read) {
290 return 0;
291 }
292
293 while (offset < len) {
294 do {
295 res = s->chr_sync_read(s, buf + offset, len - offset);
296 if (res == -1 && errno == EAGAIN) {
297 g_usleep(100);
298 }
299 } while (res == -1 && errno == EAGAIN);
300
301 if (res == 0) {
302 break;
303 }
304
305 if (res < 0) {
306 return res;
307 }
308
309 offset += res;
310
311 if (!counter--) {
312 break;
313 }
314 }
315
316 return offset;
317}
318
Anthony Liguori41084f12011-08-15 11:17:34 -0500319int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
aliguori6f97dba2008-10-31 18:49:55 +0000320{
321 if (!s->chr_ioctl)
322 return -ENOTSUP;
323 return s->chr_ioctl(s, cmd, arg);
324}
325
Anthony Liguori909cda12011-08-15 11:17:31 -0500326int qemu_chr_be_can_write(CharDriverState *s)
aliguori6f97dba2008-10-31 18:49:55 +0000327{
328 if (!s->chr_can_read)
329 return 0;
330 return s->chr_can_read(s->handler_opaque);
331}
332
Anthony Liguorifa5efcc2011-08-15 11:17:30 -0500333void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
aliguori6f97dba2008-10-31 18:49:55 +0000334{
Stefan Weilac310732012-04-19 22:27:14 +0200335 if (s->chr_read) {
336 s->chr_read(s->handler_opaque, buf, len);
337 }
aliguori6f97dba2008-10-31 18:49:55 +0000338}
339
Anthony Liguori74c0d6f2011-08-15 11:17:39 -0500340int qemu_chr_fe_get_msgfd(CharDriverState *s)
Mark McLoughlin7d174052009-07-22 09:11:39 +0100341{
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +0300342 int fd;
Stefan Hajnoczi4f858612014-06-22 10:38:36 +0800343 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +0300344}
345
346int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
347{
348 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
Mark McLoughlin7d174052009-07-22 09:11:39 +0100349}
350
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +0300351int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
352{
353 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
354}
355
Daniel P. Berrange13661082011-06-23 13:31:42 +0100356int qemu_chr_add_client(CharDriverState *s, int fd)
357{
358 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
359}
360
aliguori6f97dba2008-10-31 18:49:55 +0000361void qemu_chr_accept_input(CharDriverState *s)
362{
363 if (s->chr_accept_input)
364 s->chr_accept_input(s);
Jan Kiszka98c8ee12012-03-16 13:18:00 +0100365 qemu_notify_event();
aliguori6f97dba2008-10-31 18:49:55 +0000366}
367
Anthony Liguorie7e71b02011-08-15 11:17:29 -0500368void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
aliguori6f97dba2008-10-31 18:49:55 +0000369{
Amit Shah9bd78542009-11-03 19:59:54 +0530370 char buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +0000371 va_list ap;
372 va_start(ap, fmt);
373 vsnprintf(buf, sizeof(buf), fmt, ap);
Anthony Liguori2cc6e0a2011-08-15 11:17:28 -0500374 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
aliguori6f97dba2008-10-31 18:49:55 +0000375 va_end(ap);
376}
377
Amit Shah386a5a12013-08-28 15:24:05 +0530378static void remove_fd_in_watch(CharDriverState *chr);
379
aliguori6f97dba2008-10-31 18:49:55 +0000380void qemu_chr_add_handlers(CharDriverState *s,
Juan Quintela7b27a762010-03-11 17:55:39 +0100381 IOCanReadHandler *fd_can_read,
aliguori6f97dba2008-10-31 18:49:55 +0000382 IOReadHandler *fd_read,
383 IOEventHandler *fd_event,
384 void *opaque)
385{
Hans de Goede19083222013-03-26 11:07:56 +0100386 int fe_open;
387
Amit Shahda7d9982011-04-25 15:18:22 +0530388 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
Hans de Goede19083222013-03-26 11:07:56 +0100389 fe_open = 0;
Amit Shah386a5a12013-08-28 15:24:05 +0530390 remove_fd_in_watch(s);
Hans de Goede19083222013-03-26 11:07:56 +0100391 } else {
392 fe_open = 1;
Amit Shah2d6c1ef2011-02-10 12:55:20 +0530393 }
aliguori6f97dba2008-10-31 18:49:55 +0000394 s->chr_can_read = fd_can_read;
395 s->chr_read = fd_read;
396 s->chr_event = fd_event;
397 s->handler_opaque = opaque;
Gal Hammerac1b84d2014-02-25 12:12:35 +0200398 if (fe_open && s->chr_update_read_handler)
aliguori6f97dba2008-10-31 18:49:55 +0000399 s->chr_update_read_handler(s);
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200400
Hans de Goede19083222013-03-26 11:07:56 +0100401 if (!s->explicit_fe_open) {
Hans de Goede8e25daa2013-03-26 11:07:57 +0100402 qemu_chr_fe_set_open(s, fe_open);
Hans de Goede19083222013-03-26 11:07:56 +0100403 }
404
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200405 /* We're connecting to an already opened device, so let's make sure we
406 also get the open event */
Hans de Goedea59bcd32013-03-26 11:08:00 +0100407 if (fe_open && s->be_open) {
Hans de Goedefee204f2013-03-26 11:07:54 +0100408 qemu_chr_be_generic_open(s);
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200409 }
aliguori6f97dba2008-10-31 18:49:55 +0000410}
411
412static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
413{
414 return len;
415}
416
Paolo Bonzini0d649922015-09-29 15:24:29 +0200417static CharDriverState *qemu_chr_open_null(const char *id,
418 ChardevBackend *backend,
419 ChardevReturn *ret,
420 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +0000421{
422 CharDriverState *chr;
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000423 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.null);
aliguori6f97dba2008-10-31 18:49:55 +0000424
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000425 chr = qemu_chr_alloc(common, errp);
426 if (!chr) {
427 return NULL;
428 }
aliguori6f97dba2008-10-31 18:49:55 +0000429 chr->chr_write = null_chr_write;
Michael Rothbd5c51e2013-06-07 15:19:53 -0500430 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +0100431 return chr;
aliguori6f97dba2008-10-31 18:49:55 +0000432}
433
434/* MUX driver for serial I/O splitting */
aliguori6f97dba2008-10-31 18:49:55 +0000435#define MAX_MUX 4
436#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
437#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
438typedef struct {
Juan Quintela7b27a762010-03-11 17:55:39 +0100439 IOCanReadHandler *chr_can_read[MAX_MUX];
aliguori6f97dba2008-10-31 18:49:55 +0000440 IOReadHandler *chr_read[MAX_MUX];
441 IOEventHandler *chr_event[MAX_MUX];
442 void *ext_opaque[MAX_MUX];
443 CharDriverState *drv;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200444 int focus;
aliguori6f97dba2008-10-31 18:49:55 +0000445 int mux_cnt;
446 int term_got_escape;
447 int max_size;
aliguoria80bf992009-03-05 23:00:02 +0000448 /* Intermediate input buffer allows to catch escape sequences even if the
449 currently active device is not accepting any input - but only until it
450 is full as well. */
451 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
452 int prod[MAX_MUX];
453 int cons[MAX_MUX];
Jan Kiszka2d229592009-06-15 22:25:30 +0200454 int timestamps;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200455
456 /* Protected by the CharDriverState chr_write_lock. */
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200457 int linestart;
Jan Kiszka2d229592009-06-15 22:25:30 +0200458 int64_t timestamps_start;
aliguori6f97dba2008-10-31 18:49:55 +0000459} MuxDriver;
460
461
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200462/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +0000463static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
464{
465 MuxDriver *d = chr->opaque;
466 int ret;
Jan Kiszka2d229592009-06-15 22:25:30 +0200467 if (!d->timestamps) {
Paolo Bonzini6975b712014-06-18 08:43:56 +0200468 ret = qemu_chr_fe_write(d->drv, buf, len);
aliguori6f97dba2008-10-31 18:49:55 +0000469 } else {
470 int i;
471
472 ret = 0;
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200473 for (i = 0; i < len; i++) {
474 if (d->linestart) {
aliguori6f97dba2008-10-31 18:49:55 +0000475 char buf1[64];
476 int64_t ti;
477 int secs;
478
Alex Blighbc72ad62013-08-21 16:03:08 +0100479 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
Jan Kiszka2d229592009-06-15 22:25:30 +0200480 if (d->timestamps_start == -1)
481 d->timestamps_start = ti;
482 ti -= d->timestamps_start;
aliguoria4bb1db2009-01-22 17:15:16 +0000483 secs = ti / 1000;
aliguori6f97dba2008-10-31 18:49:55 +0000484 snprintf(buf1, sizeof(buf1),
485 "[%02d:%02d:%02d.%03d] ",
486 secs / 3600,
487 (secs / 60) % 60,
488 secs % 60,
aliguoria4bb1db2009-01-22 17:15:16 +0000489 (int)(ti % 1000));
Paolo Bonzini6975b712014-06-18 08:43:56 +0200490 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200491 d->linestart = 0;
492 }
Paolo Bonzini6975b712014-06-18 08:43:56 +0200493 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200494 if (buf[i] == '\n') {
495 d->linestart = 1;
aliguori6f97dba2008-10-31 18:49:55 +0000496 }
497 }
498 }
499 return ret;
500}
501
502static const char * const mux_help[] = {
503 "% h print this help\n\r",
504 "% x exit emulator\n\r",
505 "% s save disk data back to file (if -snapshot)\n\r",
Gonglei86d10322014-11-15 18:06:46 +0800506 "% t toggle console timestamps\n\r",
aliguori6f97dba2008-10-31 18:49:55 +0000507 "% b send break (magic sysrq)\n\r",
508 "% c switch between console and monitor\n\r",
509 "% % sends %\n\r",
510 NULL
511};
512
513int term_escape_char = 0x01; /* ctrl-a is used for escape */
514static void mux_print_help(CharDriverState *chr)
515{
516 int i, j;
517 char ebuf[15] = "Escape-Char";
518 char cbuf[50] = "\n\r";
519
520 if (term_escape_char > 0 && term_escape_char < 26) {
521 snprintf(cbuf, sizeof(cbuf), "\n\r");
522 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
523 } else {
524 snprintf(cbuf, sizeof(cbuf),
525 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
526 term_escape_char);
527 }
Paolo Bonzini6975b712014-06-18 08:43:56 +0200528 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
aliguori6f97dba2008-10-31 18:49:55 +0000529 for (i = 0; mux_help[i] != NULL; i++) {
530 for (j=0; mux_help[i][j] != '\0'; j++) {
531 if (mux_help[i][j] == '%')
Paolo Bonzini6975b712014-06-18 08:43:56 +0200532 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
aliguori6f97dba2008-10-31 18:49:55 +0000533 else
Paolo Bonzini6975b712014-06-18 08:43:56 +0200534 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
aliguori6f97dba2008-10-31 18:49:55 +0000535 }
536 }
537}
538
aliguori2724b182009-03-05 23:01:47 +0000539static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
540{
541 if (d->chr_event[mux_nr])
542 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
543}
544
aliguori6f97dba2008-10-31 18:49:55 +0000545static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
546{
547 if (d->term_got_escape) {
548 d->term_got_escape = 0;
549 if (ch == term_escape_char)
550 goto send_char;
551 switch(ch) {
552 case '?':
553 case 'h':
554 mux_print_help(chr);
555 break;
556 case 'x':
557 {
558 const char *term = "QEMU: Terminated\n\r";
Paolo Bonzini6975b712014-06-18 08:43:56 +0200559 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
aliguori6f97dba2008-10-31 18:49:55 +0000560 exit(0);
561 break;
562 }
563 case 's':
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +0200564 bdrv_commit_all();
aliguori6f97dba2008-10-31 18:49:55 +0000565 break;
566 case 'b':
Hans de Goedea425d232011-11-19 10:22:43 +0100567 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
aliguori6f97dba2008-10-31 18:49:55 +0000568 break;
569 case 'c':
570 /* Switch to the next registered device */
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200571 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
572 d->focus++;
573 if (d->focus >= d->mux_cnt)
574 d->focus = 0;
575 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
aliguori6f97dba2008-10-31 18:49:55 +0000576 break;
Jan Kiszka2d229592009-06-15 22:25:30 +0200577 case 't':
578 d->timestamps = !d->timestamps;
579 d->timestamps_start = -1;
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200580 d->linestart = 0;
Jan Kiszka2d229592009-06-15 22:25:30 +0200581 break;
aliguori6f97dba2008-10-31 18:49:55 +0000582 }
583 } else if (ch == term_escape_char) {
584 d->term_got_escape = 1;
585 } else {
586 send_char:
587 return 1;
588 }
589 return 0;
590}
591
592static void mux_chr_accept_input(CharDriverState *chr)
593{
aliguori6f97dba2008-10-31 18:49:55 +0000594 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200595 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000596
aliguoria80bf992009-03-05 23:00:02 +0000597 while (d->prod[m] != d->cons[m] &&
aliguori6f97dba2008-10-31 18:49:55 +0000598 d->chr_can_read[m] &&
599 d->chr_can_read[m](d->ext_opaque[m])) {
600 d->chr_read[m](d->ext_opaque[m],
aliguoria80bf992009-03-05 23:00:02 +0000601 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
aliguori6f97dba2008-10-31 18:49:55 +0000602 }
603}
604
605static int mux_chr_can_read(void *opaque)
606{
607 CharDriverState *chr = opaque;
608 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200609 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000610
aliguoria80bf992009-03-05 23:00:02 +0000611 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
aliguori6f97dba2008-10-31 18:49:55 +0000612 return 1;
aliguoria80bf992009-03-05 23:00:02 +0000613 if (d->chr_can_read[m])
614 return d->chr_can_read[m](d->ext_opaque[m]);
aliguori6f97dba2008-10-31 18:49:55 +0000615 return 0;
616}
617
618static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
619{
620 CharDriverState *chr = opaque;
621 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200622 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000623 int i;
624
625 mux_chr_accept_input (opaque);
626
627 for(i = 0; i < size; i++)
628 if (mux_proc_byte(chr, d, buf[i])) {
aliguoria80bf992009-03-05 23:00:02 +0000629 if (d->prod[m] == d->cons[m] &&
aliguori6f97dba2008-10-31 18:49:55 +0000630 d->chr_can_read[m] &&
631 d->chr_can_read[m](d->ext_opaque[m]))
632 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
633 else
aliguoria80bf992009-03-05 23:00:02 +0000634 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
aliguori6f97dba2008-10-31 18:49:55 +0000635 }
636}
637
638static void mux_chr_event(void *opaque, int event)
639{
640 CharDriverState *chr = opaque;
641 MuxDriver *d = chr->opaque;
642 int i;
643
644 /* Send the event to all registered listeners */
645 for (i = 0; i < d->mux_cnt; i++)
aliguori2724b182009-03-05 23:01:47 +0000646 mux_chr_send_event(d, i, event);
aliguori6f97dba2008-10-31 18:49:55 +0000647}
648
649static void mux_chr_update_read_handler(CharDriverState *chr)
650{
651 MuxDriver *d = chr->opaque;
652
653 if (d->mux_cnt >= MAX_MUX) {
654 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
655 return;
656 }
657 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
658 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
659 d->chr_read[d->mux_cnt] = chr->chr_read;
660 d->chr_event[d->mux_cnt] = chr->chr_event;
661 /* Fix up the real driver with mux routines */
662 if (d->mux_cnt == 0) {
663 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
664 mux_chr_event, chr);
665 }
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200666 if (d->focus != -1) {
667 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
Gerd Hoffmanna7aec5d2009-09-10 10:58:54 +0200668 }
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200669 d->focus = d->mux_cnt;
aliguori6f97dba2008-10-31 18:49:55 +0000670 d->mux_cnt++;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200671 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
aliguori6f97dba2008-10-31 18:49:55 +0000672}
673
Michael Roth7b7ab182013-07-30 13:04:22 -0500674static bool muxes_realized;
675
676/**
677 * Called after processing of default and command-line-specified
678 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
679 * to a mux chardev. This is done here to ensure that
680 * output/prompts/banners are only displayed for the FE that has
681 * focus when initial command-line processing/machine init is
682 * completed.
683 *
684 * After this point, any new FE attached to any new or existing
685 * mux will receive CHR_EVENT_OPENED notifications for the BE
686 * immediately.
687 */
688static void muxes_realize_done(Notifier *notifier, void *unused)
689{
690 CharDriverState *chr;
691
692 QTAILQ_FOREACH(chr, &chardevs, next) {
693 if (chr->is_mux) {
694 MuxDriver *d = chr->opaque;
695 int i;
696
697 /* send OPENED to all already-attached FEs */
698 for (i = 0; i < d->mux_cnt; i++) {
699 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
700 }
701 /* mark mux as OPENED so any new FEs will immediately receive
702 * OPENED event
703 */
704 qemu_chr_be_generic_open(chr);
705 }
706 }
707 muxes_realized = true;
708}
709
710static Notifier muxes_realize_notify = {
711 .notify = muxes_realize_done,
712};
713
Kirill Batuzov3f0838a2014-07-04 16:43:15 +0400714static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
715{
716 MuxDriver *d = s->opaque;
717 return d->drv->chr_add_watch(d->drv, cond);
718}
719
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200720static CharDriverState *qemu_chr_open_mux(const char *id,
721 ChardevBackend *backend,
722 ChardevReturn *ret, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +0000723{
Eric Blake130257d2015-10-26 16:34:57 -0600724 ChardevMux *mux = backend->u.mux;
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200725 CharDriverState *chr, *drv;
aliguori6f97dba2008-10-31 18:49:55 +0000726 MuxDriver *d;
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000727 ChardevCommon *common = qapi_ChardevMux_base(backend->u.mux);
aliguori6f97dba2008-10-31 18:49:55 +0000728
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200729 drv = qemu_chr_find(mux->chardev);
730 if (drv == NULL) {
731 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
732 return NULL;
733 }
734
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000735 chr = qemu_chr_alloc(common, errp);
736 if (!chr) {
737 return NULL;
738 }
Markus Armbruster2d528d42015-09-14 13:54:03 +0200739 d = g_new0(MuxDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +0000740
741 chr->opaque = d;
742 d->drv = drv;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200743 d->focus = -1;
aliguori6f97dba2008-10-31 18:49:55 +0000744 chr->chr_write = mux_chr_write;
745 chr->chr_update_read_handler = mux_chr_update_read_handler;
746 chr->chr_accept_input = mux_chr_accept_input;
Hans de Goede7c32c4f2011-03-24 11:12:02 +0100747 /* Frontend guest-open / -close notification is not support with muxes */
Hans de Goede574b7112013-03-26 11:07:58 +0100748 chr->chr_set_fe_open = NULL;
Kirill Batuzov3f0838a2014-07-04 16:43:15 +0400749 if (drv->chr_add_watch) {
750 chr->chr_add_watch = mux_chr_add_watch;
751 }
Michael Roth7b7ab182013-07-30 13:04:22 -0500752 /* only default to opened state if we've realized the initial
753 * set of muxes
754 */
755 chr->explicit_be_open = muxes_realized ? 0 : 1;
756 chr->is_mux = 1;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200757
aliguori6f97dba2008-10-31 18:49:55 +0000758 return chr;
759}
760
761
Anthony Liguori96c63842013-03-05 23:21:18 +0530762typedef struct IOWatchPoll
763{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200764 GSource parent;
765
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000766 QIOChannel *ioc;
Anthony Liguori96c63842013-03-05 23:21:18 +0530767 GSource *src;
Anthony Liguori96c63842013-03-05 23:21:18 +0530768
769 IOCanReadHandler *fd_can_read;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200770 GSourceFunc fd_read;
Anthony Liguori96c63842013-03-05 23:21:18 +0530771 void *opaque;
Anthony Liguori96c63842013-03-05 23:21:18 +0530772} IOWatchPoll;
773
Anthony Liguori96c63842013-03-05 23:21:18 +0530774static IOWatchPoll *io_watch_poll_from_source(GSource *source)
775{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200776 return container_of(source, IOWatchPoll, parent);
Anthony Liguori96c63842013-03-05 23:21:18 +0530777}
778
779static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
780{
781 IOWatchPoll *iwp = io_watch_poll_from_source(source);
Paolo Bonzinid185c092013-04-05 17:59:33 +0200782 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200783 bool was_active = iwp->src != NULL;
Paolo Bonzinid185c092013-04-05 17:59:33 +0200784 if (was_active == now_active) {
Anthony Liguori96c63842013-03-05 23:21:18 +0530785 return FALSE;
786 }
787
Paolo Bonzinid185c092013-04-05 17:59:33 +0200788 if (now_active) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000789 iwp->src = qio_channel_create_watch(
790 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200791 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
Paolo Bonzinid185c092013-04-05 17:59:33 +0200792 g_source_attach(iwp->src, NULL);
793 } else {
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200794 g_source_destroy(iwp->src);
795 g_source_unref(iwp->src);
796 iwp->src = NULL;
Paolo Bonzinid185c092013-04-05 17:59:33 +0200797 }
798 return FALSE;
Anthony Liguori96c63842013-03-05 23:21:18 +0530799}
800
801static gboolean io_watch_poll_check(GSource *source)
802{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200803 return FALSE;
Anthony Liguori96c63842013-03-05 23:21:18 +0530804}
805
806static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
807 gpointer user_data)
808{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200809 abort();
Anthony Liguori96c63842013-03-05 23:21:18 +0530810}
811
812static void io_watch_poll_finalize(GSource *source)
813{
Paolo Bonzini2b316772013-04-19 17:32:09 +0200814 /* Due to a glib bug, removing the last reference to a source
815 * inside a finalize callback causes recursive locking (and a
816 * deadlock). This is not a problem inside other callbacks,
817 * including dispatch callbacks, so we call io_remove_watch_poll
818 * to remove this source. At this point, iwp->src must
819 * be NULL, or we would leak it.
820 *
821 * This would be solved much more elegantly by child sources,
822 * but we support older glib versions that do not have them.
823 */
Anthony Liguori96c63842013-03-05 23:21:18 +0530824 IOWatchPoll *iwp = io_watch_poll_from_source(source);
Paolo Bonzini2b316772013-04-19 17:32:09 +0200825 assert(iwp->src == NULL);
Anthony Liguori96c63842013-03-05 23:21:18 +0530826}
827
828static GSourceFuncs io_watch_poll_funcs = {
829 .prepare = io_watch_poll_prepare,
830 .check = io_watch_poll_check,
831 .dispatch = io_watch_poll_dispatch,
832 .finalize = io_watch_poll_finalize,
833};
834
835/* Can only be used for read */
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000836static guint io_add_watch_poll(QIOChannel *ioc,
Anthony Liguori96c63842013-03-05 23:21:18 +0530837 IOCanReadHandler *fd_can_read,
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000838 QIOChannelFunc fd_read,
Anthony Liguori96c63842013-03-05 23:21:18 +0530839 gpointer user_data)
840{
841 IOWatchPoll *iwp;
Paolo Bonzini0ca5aa42013-04-10 15:23:27 +0200842 int tag;
Anthony Liguori96c63842013-03-05 23:21:18 +0530843
Paolo Bonzinid185c092013-04-05 17:59:33 +0200844 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
Anthony Liguori96c63842013-03-05 23:21:18 +0530845 iwp->fd_can_read = fd_can_read;
846 iwp->opaque = user_data;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000847 iwp->ioc = ioc;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200848 iwp->fd_read = (GSourceFunc) fd_read;
849 iwp->src = NULL;
Anthony Liguori96c63842013-03-05 23:21:18 +0530850
Paolo Bonzini0ca5aa42013-04-10 15:23:27 +0200851 tag = g_source_attach(&iwp->parent, NULL);
852 g_source_unref(&iwp->parent);
853 return tag;
Anthony Liguori96c63842013-03-05 23:21:18 +0530854}
855
Paolo Bonzini2b316772013-04-19 17:32:09 +0200856static void io_remove_watch_poll(guint tag)
857{
858 GSource *source;
859 IOWatchPoll *iwp;
860
861 g_return_if_fail (tag > 0);
862
863 source = g_main_context_find_source_by_id(NULL, tag);
864 g_return_if_fail (source != NULL);
865
866 iwp = io_watch_poll_from_source(source);
867 if (iwp->src) {
868 g_source_destroy(iwp->src);
869 g_source_unref(iwp->src);
870 iwp->src = NULL;
871 }
872 g_source_destroy(&iwp->parent);
873}
874
Amit Shah26da70c2013-08-28 15:23:37 +0530875static void remove_fd_in_watch(CharDriverState *chr)
876{
877 if (chr->fd_in_tag) {
878 io_remove_watch_poll(chr->fd_in_tag);
879 chr->fd_in_tag = 0;
880 }
881}
882
Anthony Liguori96c63842013-03-05 23:21:18 +0530883
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000884static int io_channel_send_full(QIOChannel *ioc,
885 const void *buf, size_t len,
886 int *fds, size_t nfds)
Anthony Liguori96c63842013-03-05 23:21:18 +0530887{
Laszlo Ersekac8c26f2013-07-16 20:19:40 +0200888 size_t offset = 0;
Anthony Liguori96c63842013-03-05 23:21:18 +0530889
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000890 while (offset < len) {
891 ssize_t ret = 0;
892 struct iovec iov = { .iov_base = (char *)buf + offset,
893 .iov_len = len - offset };
Anthony Liguori684a0962013-03-29 11:39:50 -0500894
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000895 ret = qio_channel_writev_full(
896 ioc, &iov, 1,
897 fds, nfds, NULL);
898 if (ret == QIO_CHANNEL_ERR_BLOCK) {
899 errno = EAGAIN;
900 return -1;
901 } else if (ret < 0) {
902 if (offset) {
903 return offset;
904 }
905
906 errno = EINVAL;
907 return -1;
908 }
909
910 offset += ret;
Anthony Liguori96c63842013-03-05 23:21:18 +0530911 }
Anthony Liguori684a0962013-03-29 11:39:50 -0500912
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000913 return offset;
914}
915
916
917#ifndef _WIN32
918static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
919{
920 return io_channel_send_full(ioc, buf, len, NULL, 0);
Anthony Liguori96c63842013-03-05 23:21:18 +0530921}
Anthony Liguori96c63842013-03-05 23:21:18 +0530922
Blue Swirl44ab9ed2013-03-09 09:56:04 +0000923
Anthony Liguoria29753f2013-03-05 23:21:19 +0530924typedef struct FDCharDriver {
925 CharDriverState *chr;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000926 QIOChannel *ioc_in, *ioc_out;
aliguori6f97dba2008-10-31 18:49:55 +0000927 int max_size;
928} FDCharDriver;
929
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200930/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +0000931static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
932{
933 FDCharDriver *s = chr->opaque;
Anthony Liguoria29753f2013-03-05 23:21:19 +0530934
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000935 return io_channel_send(s->ioc_out, buf, len);
Anthony Liguoria29753f2013-03-05 23:21:19 +0530936}
937
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000938static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
Anthony Liguoria29753f2013-03-05 23:21:19 +0530939{
940 CharDriverState *chr = opaque;
941 FDCharDriver *s = chr->opaque;
942 int len;
943 uint8_t buf[READ_BUF_LEN];
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000944 ssize_t ret;
Anthony Liguoria29753f2013-03-05 23:21:19 +0530945
946 len = sizeof(buf);
947 if (len > s->max_size) {
948 len = s->max_size;
949 }
950 if (len == 0) {
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +0200951 return TRUE;
Anthony Liguoria29753f2013-03-05 23:21:19 +0530952 }
953
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000954 ret = qio_channel_read(
955 chan, (gchar *)buf, len, NULL);
956 if (ret == 0) {
Amit Shah26da70c2013-08-28 15:23:37 +0530957 remove_fd_in_watch(chr);
Anthony Liguoria29753f2013-03-05 23:21:19 +0530958 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
959 return FALSE;
960 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000961 if (ret > 0) {
962 qemu_chr_be_write(chr, buf, ret);
Anthony Liguoria29753f2013-03-05 23:21:19 +0530963 }
964
965 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +0000966}
967
968static int fd_chr_read_poll(void *opaque)
969{
970 CharDriverState *chr = opaque;
971 FDCharDriver *s = chr->opaque;
972
Anthony Liguori909cda12011-08-15 11:17:31 -0500973 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +0000974 return s->max_size;
975}
976
Anthony Liguori23673ca2013-03-05 23:21:23 +0530977static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
978{
979 FDCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000980 return qio_channel_create_watch(s->ioc_out, cond);
Anthony Liguori23673ca2013-03-05 23:21:23 +0530981}
982
aliguori6f97dba2008-10-31 18:49:55 +0000983static void fd_chr_update_read_handler(CharDriverState *chr)
984{
985 FDCharDriver *s = chr->opaque;
986
Amit Shah26da70c2013-08-28 15:23:37 +0530987 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000988 if (s->ioc_in) {
989 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
990 fd_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +0530991 fd_chr_read, chr);
aliguori6f97dba2008-10-31 18:49:55 +0000992 }
993}
994
995static void fd_chr_close(struct CharDriverState *chr)
996{
997 FDCharDriver *s = chr->opaque;
998
Amit Shah26da70c2013-08-28 15:23:37 +0530999 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001000 if (s->ioc_in) {
1001 object_unref(OBJECT(s->ioc_in));
Anthony Liguoria29753f2013-03-05 23:21:19 +05301002 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001003 if (s->ioc_out) {
1004 object_unref(OBJECT(s->ioc_out));
aliguori6f97dba2008-10-31 18:49:55 +00001005 }
1006
Anthony Liguori7267c092011-08-20 22:09:37 -05001007 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01001008 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001009}
1010
1011/* open a character device to a unix fd */
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001012static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1013 ChardevCommon *backend, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001014{
1015 CharDriverState *chr;
1016 FDCharDriver *s;
1017
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001018 chr = qemu_chr_alloc(backend, errp);
1019 if (!chr) {
1020 return NULL;
1021 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02001022 s = g_new0(FDCharDriver, 1);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001023 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1024 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
Gonglei4ff12bd2014-08-11 17:34:20 +08001025 qemu_set_nonblock(fd_out);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301026 s->chr = chr;
aliguori6f97dba2008-10-31 18:49:55 +00001027 chr->opaque = s;
Anthony Liguori23673ca2013-03-05 23:21:23 +05301028 chr->chr_add_watch = fd_chr_add_watch;
aliguori6f97dba2008-10-31 18:49:55 +00001029 chr->chr_write = fd_chr_write;
1030 chr->chr_update_read_handler = fd_chr_update_read_handler;
1031 chr->chr_close = fd_chr_close;
1032
aliguori6f97dba2008-10-31 18:49:55 +00001033 return chr;
1034}
1035
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02001036static CharDriverState *qemu_chr_open_pipe(const char *id,
1037 ChardevBackend *backend,
1038 ChardevReturn *ret,
1039 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001040{
Eric Blake130257d2015-10-26 16:34:57 -06001041 ChardevHostdev *opts = backend->u.pipe;
aliguori6f97dba2008-10-31 18:49:55 +00001042 int fd_in, fd_out;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001043 char *filename_in;
1044 char *filename_out;
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01001045 const char *filename = opts->device;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001046 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02001047
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001048
1049 filename_in = g_strdup_printf("%s.in", filename);
1050 filename_out = g_strdup_printf("%s.out", filename);
Kevin Wolf40ff6d72009-12-02 12:24:42 +01001051 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1052 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001053 g_free(filename_in);
1054 g_free(filename_out);
aliguori6f97dba2008-10-31 18:49:55 +00001055 if (fd_in < 0 || fd_out < 0) {
1056 if (fd_in >= 0)
1057 close(fd_in);
1058 if (fd_out >= 0)
1059 close(fd_out);
Markus Armbrusterb181e042012-02-07 15:09:09 +01001060 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
Markus Armbrustera89dd6c2012-02-07 15:09:10 +01001061 if (fd_in < 0) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02001062 error_setg_file_open(errp, errno, filename);
Markus Armbruster1f514702012-02-07 15:09:08 +01001063 return NULL;
Markus Armbrustera89dd6c2012-02-07 15:09:10 +01001064 }
aliguori6f97dba2008-10-31 18:49:55 +00001065 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001066 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00001067}
1068
aliguori6f97dba2008-10-31 18:49:55 +00001069/* init terminal so that we can grab keys */
1070static struct termios oldtty;
1071static int old_fd0_flags;
Li Liuc88930a2014-09-09 19:19:48 +08001072static bool stdio_in_use;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001073static bool stdio_allow_signal;
Gal Hammere76d4422015-01-07 10:38:35 +02001074static bool stdio_echo_state;
1075
1076static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
aliguori6f97dba2008-10-31 18:49:55 +00001077
1078static void term_exit(void)
1079{
1080 tcsetattr (0, TCSANOW, &oldtty);
1081 fcntl(0, F_SETFL, old_fd0_flags);
1082}
1083
Gal Hammere76d4422015-01-07 10:38:35 +02001084static void term_stdio_handler(int sig)
1085{
1086 /* restore echo after resume from suspend. */
1087 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1088}
1089
Paolo Bonzinibb002512010-12-23 13:42:50 +01001090static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
aliguori6f97dba2008-10-31 18:49:55 +00001091{
1092 struct termios tty;
1093
Gal Hammere76d4422015-01-07 10:38:35 +02001094 stdio_echo_state = echo;
Paolo Bonzini03693642010-12-23 13:42:49 +01001095 tty = oldtty;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001096 if (!echo) {
1097 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
aliguori6f97dba2008-10-31 18:49:55 +00001098 |INLCR|IGNCR|ICRNL|IXON);
Paolo Bonzinibb002512010-12-23 13:42:50 +01001099 tty.c_oflag |= OPOST;
1100 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1101 tty.c_cflag &= ~(CSIZE|PARENB);
1102 tty.c_cflag |= CS8;
1103 tty.c_cc[VMIN] = 1;
1104 tty.c_cc[VTIME] = 0;
1105 }
Paolo Bonzinibb002512010-12-23 13:42:50 +01001106 if (!stdio_allow_signal)
aliguori6f97dba2008-10-31 18:49:55 +00001107 tty.c_lflag &= ~ISIG;
aliguori6f97dba2008-10-31 18:49:55 +00001108
1109 tcsetattr (0, TCSANOW, &tty);
aliguori6f97dba2008-10-31 18:49:55 +00001110}
1111
1112static void qemu_chr_close_stdio(struct CharDriverState *chr)
1113{
1114 term_exit();
aliguori6f97dba2008-10-31 18:49:55 +00001115 fd_chr_close(chr);
1116}
1117
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001118static CharDriverState *qemu_chr_open_stdio(const char *id,
1119 ChardevBackend *backend,
1120 ChardevReturn *ret,
1121 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001122{
Eric Blake130257d2015-10-26 16:34:57 -06001123 ChardevStdio *opts = backend->u.stdio;
aliguori6f97dba2008-10-31 18:49:55 +00001124 CharDriverState *chr;
Gal Hammere76d4422015-01-07 10:38:35 +02001125 struct sigaction act;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001126 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
aliguori6f97dba2008-10-31 18:49:55 +00001127
Michael Tokarevab51b1d2012-12-30 12:48:14 +04001128 if (is_daemonized()) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001129 error_setg(errp, "cannot use stdio with -daemonize");
Michael Tokarevab51b1d2012-12-30 12:48:14 +04001130 return NULL;
1131 }
Li Liuc88930a2014-09-09 19:19:48 +08001132
1133 if (stdio_in_use) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001134 error_setg(errp, "cannot use stdio by multiple character devices");
1135 return NULL;
Li Liuc88930a2014-09-09 19:19:48 +08001136 }
1137
1138 stdio_in_use = true;
Anthony Liguoried7a1542013-03-05 23:21:17 +05301139 old_fd0_flags = fcntl(0, F_GETFL);
Li Liuc88930a2014-09-09 19:19:48 +08001140 tcgetattr(0, &oldtty);
Gonglei4ff12bd2014-08-11 17:34:20 +08001141 qemu_set_nonblock(0);
Anthony Liguoried7a1542013-03-05 23:21:17 +05301142 atexit(term_exit);
Paolo Bonzini03693642010-12-23 13:42:49 +01001143
Gal Hammere76d4422015-01-07 10:38:35 +02001144 memset(&act, 0, sizeof(act));
1145 act.sa_handler = term_stdio_handler;
1146 sigaction(SIGCONT, &act, NULL);
1147
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001148 chr = qemu_chr_open_fd(0, 1, common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00001149 chr->chr_close = qemu_chr_close_stdio;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001150 chr->chr_set_echo = qemu_chr_set_echo_stdio;
Gerd Hoffmann7c358032013-02-21 12:34:58 +01001151 if (opts->has_signal) {
1152 stdio_allow_signal = opts->signal;
1153 }
Anthony Liguori15f31512011-08-15 11:17:35 -05001154 qemu_chr_fe_set_echo(chr, false);
aliguori6f97dba2008-10-31 18:49:55 +00001155
Markus Armbruster1f514702012-02-07 15:09:08 +01001156 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001157}
1158
aliguori6f97dba2008-10-31 18:49:55 +00001159#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
Aurelien Jarnoa167ba52009-11-29 18:00:41 +01001160 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1161 || defined(__GLIBC__)
aliguori6f97dba2008-10-31 18:49:55 +00001162
Paolo Bonzinid809ab92015-10-12 09:46:23 +02001163#define HAVE_CHARDEV_SERIAL 1
1164#define HAVE_CHARDEV_PTY 1
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001165
aliguori6f97dba2008-10-31 18:49:55 +00001166typedef struct {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001167 QIOChannel *ioc;
aliguori6f97dba2008-10-31 18:49:55 +00001168 int read_bytes;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001169
1170 /* Protected by the CharDriverState chr_write_lock. */
1171 int connected;
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301172 guint timer_tag;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001173 guint open_tag;
aliguori6f97dba2008-10-31 18:49:55 +00001174} PtyCharDriver;
1175
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001176static void pty_chr_update_read_handler_locked(CharDriverState *chr);
aliguori6f97dba2008-10-31 18:49:55 +00001177static void pty_chr_state(CharDriverState *chr, int connected);
1178
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301179static gboolean pty_chr_timer(gpointer opaque)
1180{
1181 struct CharDriverState *chr = opaque;
1182 PtyCharDriver *s = chr->opaque;
1183
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001184 qemu_mutex_lock(&chr->chr_write_lock);
Hans de Goede79f20072013-04-25 13:53:02 +02001185 s->timer_tag = 0;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001186 s->open_tag = 0;
Gerd Hoffmannb0d768c2013-08-22 11:43:58 +02001187 if (!s->connected) {
1188 /* Next poll ... */
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001189 pty_chr_update_read_handler_locked(chr);
Gerd Hoffmannb0d768c2013-08-22 11:43:58 +02001190 }
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001191 qemu_mutex_unlock(&chr->chr_write_lock);
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301192 return FALSE;
1193}
1194
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001195/* Called with chr_write_lock held. */
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301196static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1197{
1198 PtyCharDriver *s = chr->opaque;
1199
1200 if (s->timer_tag) {
1201 g_source_remove(s->timer_tag);
1202 s->timer_tag = 0;
1203 }
1204
1205 if (ms == 1000) {
1206 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1207 } else {
1208 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1209 }
1210}
1211
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001212/* Called with chr_write_lock held. */
1213static void pty_chr_update_read_handler_locked(CharDriverState *chr)
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001214{
1215 PtyCharDriver *s = chr->opaque;
1216 GPollFD pfd;
Paolo Bonzinic1f24482015-12-01 11:27:00 +01001217 int rc;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001218 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001219
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001220 pfd.fd = fioc->fd;
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001221 pfd.events = G_IO_OUT;
1222 pfd.revents = 0;
Paolo Bonzinic1f24482015-12-01 11:27:00 +01001223 do {
1224 rc = g_poll(&pfd, 1, 0);
1225 } while (rc == -1 && errno == EINTR);
1226 assert(rc >= 0);
1227
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001228 if (pfd.revents & G_IO_HUP) {
1229 pty_chr_state(chr, 0);
1230 } else {
1231 pty_chr_state(chr, 1);
1232 }
1233}
1234
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001235static void pty_chr_update_read_handler(CharDriverState *chr)
1236{
1237 qemu_mutex_lock(&chr->chr_write_lock);
1238 pty_chr_update_read_handler_locked(chr);
1239 qemu_mutex_unlock(&chr->chr_write_lock);
1240}
1241
1242/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001243static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1244{
1245 PtyCharDriver *s = chr->opaque;
1246
1247 if (!s->connected) {
1248 /* guest sends data, check for (re-)connect */
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001249 pty_chr_update_read_handler_locked(chr);
Sebastian Tanasecf7330c2014-07-28 13:39:14 +02001250 if (!s->connected) {
1251 return 0;
1252 }
aliguori6f97dba2008-10-31 18:49:55 +00001253 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001254 return io_channel_send(s->ioc, buf, len);
aliguori6f97dba2008-10-31 18:49:55 +00001255}
1256
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301257static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1258{
1259 PtyCharDriver *s = chr->opaque;
Paolo Bonzini62c339c2014-07-24 16:08:04 +02001260 if (!s->connected) {
1261 return NULL;
1262 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001263 return qio_channel_create_watch(s->ioc, cond);
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301264}
1265
aliguori6f97dba2008-10-31 18:49:55 +00001266static int pty_chr_read_poll(void *opaque)
1267{
1268 CharDriverState *chr = opaque;
1269 PtyCharDriver *s = chr->opaque;
1270
Anthony Liguori909cda12011-08-15 11:17:31 -05001271 s->read_bytes = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001272 return s->read_bytes;
1273}
1274
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001275static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00001276{
1277 CharDriverState *chr = opaque;
1278 PtyCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001279 gsize len;
Amit Shah9bd78542009-11-03 19:59:54 +05301280 uint8_t buf[READ_BUF_LEN];
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001281 ssize_t ret;
aliguori6f97dba2008-10-31 18:49:55 +00001282
1283 len = sizeof(buf);
1284 if (len > s->read_bytes)
1285 len = s->read_bytes;
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02001286 if (len == 0) {
1287 return TRUE;
1288 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001289 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1290 if (ret <= 0) {
aliguori6f97dba2008-10-31 18:49:55 +00001291 pty_chr_state(chr, 0);
Anthony Liguori093d3a22013-03-05 23:21:20 +05301292 return FALSE;
1293 } else {
aliguori6f97dba2008-10-31 18:49:55 +00001294 pty_chr_state(chr, 1);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001295 qemu_chr_be_write(chr, buf, ret);
aliguori6f97dba2008-10-31 18:49:55 +00001296 }
Anthony Liguori093d3a22013-03-05 23:21:20 +05301297 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00001298}
1299
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001300static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1301{
1302 CharDriverState *chr = opaque;
1303 PtyCharDriver *s = chr->opaque;
1304
1305 s->open_tag = 0;
1306 qemu_chr_be_generic_open(chr);
1307 return FALSE;
1308}
1309
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001310/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001311static void pty_chr_state(CharDriverState *chr, int connected)
1312{
1313 PtyCharDriver *s = chr->opaque;
1314
1315 if (!connected) {
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001316 if (s->open_tag) {
1317 g_source_remove(s->open_tag);
1318 s->open_tag = 0;
1319 }
Amit Shah26da70c2013-08-28 15:23:37 +05301320 remove_fd_in_watch(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001321 s->connected = 0;
aliguori6f97dba2008-10-31 18:49:55 +00001322 /* (re-)connect poll interval for idle guests: once per second.
1323 * We check more frequently in case the guests sends data to
1324 * the virtual device linked to our pty. */
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301325 pty_chr_rearm_timer(chr, 1000);
aliguori6f97dba2008-10-31 18:49:55 +00001326 } else {
Paolo Bonzini85a67692013-04-19 17:32:07 +02001327 if (s->timer_tag) {
1328 g_source_remove(s->timer_tag);
1329 s->timer_tag = 0;
1330 }
1331 if (!s->connected) {
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001332 g_assert(s->open_tag == 0);
Paolo Bonzini85a67692013-04-19 17:32:07 +02001333 s->connected = 1;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001334 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
Gal Hammerac1b84d2014-02-25 12:12:35 +02001335 }
1336 if (!chr->fd_in_tag) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001337 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1338 pty_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05301339 pty_chr_read, chr);
Paolo Bonzini85a67692013-04-19 17:32:07 +02001340 }
aliguori6f97dba2008-10-31 18:49:55 +00001341 }
1342}
1343
aliguori6f97dba2008-10-31 18:49:55 +00001344static void pty_chr_close(struct CharDriverState *chr)
1345{
1346 PtyCharDriver *s = chr->opaque;
1347
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001348 qemu_mutex_lock(&chr->chr_write_lock);
1349 pty_chr_state(chr, 0);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001350 object_unref(OBJECT(s->ioc));
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301351 if (s->timer_tag) {
1352 g_source_remove(s->timer_tag);
Paolo Bonzini910b6362013-04-19 17:32:06 +02001353 s->timer_tag = 0;
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301354 }
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001355 qemu_mutex_unlock(&chr->chr_write_lock);
Anthony Liguori7267c092011-08-20 22:09:37 -05001356 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01001357 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001358}
1359
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001360static CharDriverState *qemu_chr_open_pty(const char *id,
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02001361 ChardevBackend *backend,
1362 ChardevReturn *ret,
1363 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001364{
1365 CharDriverState *chr;
1366 PtyCharDriver *s;
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001367 int master_fd, slave_fd;
aliguori6f97dba2008-10-31 18:49:55 +00001368 char pty_name[PATH_MAX];
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001369 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.pty);
aliguori6f97dba2008-10-31 18:49:55 +00001370
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001371 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1372 if (master_fd < 0) {
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02001373 error_setg_errno(errp, errno, "Failed to create PTY");
Markus Armbruster1f514702012-02-07 15:09:08 +01001374 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00001375 }
1376
aliguori6f97dba2008-10-31 18:49:55 +00001377 close(slave_fd);
Don Slutzfac66882014-12-22 10:04:00 -05001378 qemu_set_nonblock(master_fd);
aliguori6f97dba2008-10-31 18:49:55 +00001379
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001380 chr = qemu_chr_alloc(common, errp);
1381 if (!chr) {
1382 close(master_fd);
1383 return NULL;
1384 }
aliguori6f97dba2008-10-31 18:49:55 +00001385
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001386 chr->filename = g_strdup_printf("pty:%s", pty_name);
1387 ret->pty = g_strdup(pty_name);
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001388 ret->has_pty = true;
Lei Li58650212012-12-21 12:26:38 +08001389
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001390 fprintf(stderr, "char device redirected to %s (label %s)\n",
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001391 pty_name, id);
Markus Armbrustera4e26042011-11-11 10:40:05 +01001392
Markus Armbruster2d528d42015-09-14 13:54:03 +02001393 s = g_new0(PtyCharDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +00001394 chr->opaque = s;
1395 chr->chr_write = pty_chr_write;
1396 chr->chr_update_read_handler = pty_chr_update_read_handler;
1397 chr->chr_close = pty_chr_close;
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301398 chr->chr_add_watch = pty_chr_add_watch;
Michael Rothbd5c51e2013-06-07 15:19:53 -05001399 chr->explicit_be_open = true;
aliguori6f97dba2008-10-31 18:49:55 +00001400
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001401 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301402 s->timer_tag = 0;
aliguori6f97dba2008-10-31 18:49:55 +00001403
Markus Armbruster1f514702012-02-07 15:09:08 +01001404 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001405}
1406
1407static void tty_serial_init(int fd, int speed,
1408 int parity, int data_bits, int stop_bits)
1409{
1410 struct termios tty;
1411 speed_t spd;
1412
1413#if 0
1414 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1415 speed, parity, data_bits, stop_bits);
1416#endif
1417 tcgetattr (fd, &tty);
1418
Stefan Weil45eea132009-10-26 16:10:10 +01001419#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1420 speed = speed * 10 / 11;
1421 do {
1422 check_speed(50);
1423 check_speed(75);
1424 check_speed(110);
1425 check_speed(134);
1426 check_speed(150);
1427 check_speed(200);
1428 check_speed(300);
1429 check_speed(600);
1430 check_speed(1200);
1431 check_speed(1800);
1432 check_speed(2400);
1433 check_speed(4800);
1434 check_speed(9600);
1435 check_speed(19200);
1436 check_speed(38400);
1437 /* Non-Posix values follow. They may be unsupported on some systems. */
1438 check_speed(57600);
1439 check_speed(115200);
1440#ifdef B230400
1441 check_speed(230400);
1442#endif
1443#ifdef B460800
1444 check_speed(460800);
1445#endif
1446#ifdef B500000
1447 check_speed(500000);
1448#endif
1449#ifdef B576000
1450 check_speed(576000);
1451#endif
1452#ifdef B921600
1453 check_speed(921600);
1454#endif
1455#ifdef B1000000
1456 check_speed(1000000);
1457#endif
1458#ifdef B1152000
1459 check_speed(1152000);
1460#endif
1461#ifdef B1500000
1462 check_speed(1500000);
1463#endif
1464#ifdef B2000000
1465 check_speed(2000000);
1466#endif
1467#ifdef B2500000
1468 check_speed(2500000);
1469#endif
1470#ifdef B3000000
1471 check_speed(3000000);
1472#endif
1473#ifdef B3500000
1474 check_speed(3500000);
1475#endif
1476#ifdef B4000000
1477 check_speed(4000000);
1478#endif
aliguori6f97dba2008-10-31 18:49:55 +00001479 spd = B115200;
Stefan Weil45eea132009-10-26 16:10:10 +01001480 } while (0);
aliguori6f97dba2008-10-31 18:49:55 +00001481
1482 cfsetispeed(&tty, spd);
1483 cfsetospeed(&tty, spd);
1484
1485 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1486 |INLCR|IGNCR|ICRNL|IXON);
1487 tty.c_oflag |= OPOST;
1488 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1489 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1490 switch(data_bits) {
1491 default:
1492 case 8:
1493 tty.c_cflag |= CS8;
1494 break;
1495 case 7:
1496 tty.c_cflag |= CS7;
1497 break;
1498 case 6:
1499 tty.c_cflag |= CS6;
1500 break;
1501 case 5:
1502 tty.c_cflag |= CS5;
1503 break;
1504 }
1505 switch(parity) {
1506 default:
1507 case 'N':
1508 break;
1509 case 'E':
1510 tty.c_cflag |= PARENB;
1511 break;
1512 case 'O':
1513 tty.c_cflag |= PARENB | PARODD;
1514 break;
1515 }
1516 if (stop_bits == 2)
1517 tty.c_cflag |= CSTOPB;
1518
1519 tcsetattr (fd, TCSANOW, &tty);
1520}
1521
1522static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1523{
1524 FDCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001525 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
aliguori6f97dba2008-10-31 18:49:55 +00001526
1527 switch(cmd) {
1528 case CHR_IOCTL_SERIAL_SET_PARAMS:
1529 {
1530 QEMUSerialSetParams *ssp = arg;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001531 tty_serial_init(fioc->fd,
Anthony Liguoria29753f2013-03-05 23:21:19 +05301532 ssp->speed, ssp->parity,
aliguori6f97dba2008-10-31 18:49:55 +00001533 ssp->data_bits, ssp->stop_bits);
1534 }
1535 break;
1536 case CHR_IOCTL_SERIAL_SET_BREAK:
1537 {
1538 int enable = *(int *)arg;
Anthony Liguoria29753f2013-03-05 23:21:19 +05301539 if (enable) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001540 tcsendbreak(fioc->fd, 1);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301541 }
aliguori6f97dba2008-10-31 18:49:55 +00001542 }
1543 break;
1544 case CHR_IOCTL_SERIAL_GET_TIOCM:
1545 {
1546 int sarg = 0;
1547 int *targ = (int *)arg;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001548 ioctl(fioc->fd, TIOCMGET, &sarg);
aliguori6f97dba2008-10-31 18:49:55 +00001549 *targ = 0;
aurel32b4abdfa2009-02-08 14:46:17 +00001550 if (sarg & TIOCM_CTS)
aliguori6f97dba2008-10-31 18:49:55 +00001551 *targ |= CHR_TIOCM_CTS;
aurel32b4abdfa2009-02-08 14:46:17 +00001552 if (sarg & TIOCM_CAR)
aliguori6f97dba2008-10-31 18:49:55 +00001553 *targ |= CHR_TIOCM_CAR;
aurel32b4abdfa2009-02-08 14:46:17 +00001554 if (sarg & TIOCM_DSR)
aliguori6f97dba2008-10-31 18:49:55 +00001555 *targ |= CHR_TIOCM_DSR;
aurel32b4abdfa2009-02-08 14:46:17 +00001556 if (sarg & TIOCM_RI)
aliguori6f97dba2008-10-31 18:49:55 +00001557 *targ |= CHR_TIOCM_RI;
aurel32b4abdfa2009-02-08 14:46:17 +00001558 if (sarg & TIOCM_DTR)
aliguori6f97dba2008-10-31 18:49:55 +00001559 *targ |= CHR_TIOCM_DTR;
aurel32b4abdfa2009-02-08 14:46:17 +00001560 if (sarg & TIOCM_RTS)
aliguori6f97dba2008-10-31 18:49:55 +00001561 *targ |= CHR_TIOCM_RTS;
1562 }
1563 break;
1564 case CHR_IOCTL_SERIAL_SET_TIOCM:
1565 {
1566 int sarg = *(int *)arg;
1567 int targ = 0;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001568 ioctl(fioc->fd, TIOCMGET, &targ);
aurel32b4abdfa2009-02-08 14:46:17 +00001569 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1570 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1571 if (sarg & CHR_TIOCM_CTS)
1572 targ |= TIOCM_CTS;
1573 if (sarg & CHR_TIOCM_CAR)
1574 targ |= TIOCM_CAR;
1575 if (sarg & CHR_TIOCM_DSR)
1576 targ |= TIOCM_DSR;
1577 if (sarg & CHR_TIOCM_RI)
1578 targ |= TIOCM_RI;
1579 if (sarg & CHR_TIOCM_DTR)
aliguori6f97dba2008-10-31 18:49:55 +00001580 targ |= TIOCM_DTR;
aurel32b4abdfa2009-02-08 14:46:17 +00001581 if (sarg & CHR_TIOCM_RTS)
aliguori6f97dba2008-10-31 18:49:55 +00001582 targ |= TIOCM_RTS;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001583 ioctl(fioc->fd, TIOCMSET, &targ);
aliguori6f97dba2008-10-31 18:49:55 +00001584 }
1585 break;
1586 default:
1587 return -ENOTSUP;
1588 }
1589 return 0;
1590}
1591
David Ahern4266a132010-02-10 18:27:17 -07001592static void qemu_chr_close_tty(CharDriverState *chr)
1593{
David Ahern4266a132010-02-10 18:27:17 -07001594 fd_chr_close(chr);
David Ahern4266a132010-02-10 18:27:17 -07001595}
1596
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001597static CharDriverState *qemu_chr_open_tty_fd(int fd,
1598 ChardevCommon *backend,
1599 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01001600{
1601 CharDriverState *chr;
1602
1603 tty_serial_init(fd, 115200, 'N', 8, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001604 chr = qemu_chr_open_fd(fd, fd, backend, errp);
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01001605 chr->chr_ioctl = tty_serial_ioctl;
1606 chr->chr_close = qemu_chr_close_tty;
1607 return chr;
1608}
aliguori6f97dba2008-10-31 18:49:55 +00001609#endif /* __linux__ || __sun__ */
1610
1611#if defined(__linux__)
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001612
1613#define HAVE_CHARDEV_PARPORT 1
1614
aliguori6f97dba2008-10-31 18:49:55 +00001615typedef struct {
1616 int fd;
1617 int mode;
1618} ParallelCharDriver;
1619
1620static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1621{
1622 if (s->mode != mode) {
1623 int m = mode;
1624 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1625 return 0;
1626 s->mode = mode;
1627 }
1628 return 1;
1629}
1630
1631static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1632{
1633 ParallelCharDriver *drv = chr->opaque;
1634 int fd = drv->fd;
1635 uint8_t b;
1636
1637 switch(cmd) {
1638 case CHR_IOCTL_PP_READ_DATA:
1639 if (ioctl(fd, PPRDATA, &b) < 0)
1640 return -ENOTSUP;
1641 *(uint8_t *)arg = b;
1642 break;
1643 case CHR_IOCTL_PP_WRITE_DATA:
1644 b = *(uint8_t *)arg;
1645 if (ioctl(fd, PPWDATA, &b) < 0)
1646 return -ENOTSUP;
1647 break;
1648 case CHR_IOCTL_PP_READ_CONTROL:
1649 if (ioctl(fd, PPRCONTROL, &b) < 0)
1650 return -ENOTSUP;
1651 /* Linux gives only the lowest bits, and no way to know data
1652 direction! For better compatibility set the fixed upper
1653 bits. */
1654 *(uint8_t *)arg = b | 0xc0;
1655 break;
1656 case CHR_IOCTL_PP_WRITE_CONTROL:
1657 b = *(uint8_t *)arg;
1658 if (ioctl(fd, PPWCONTROL, &b) < 0)
1659 return -ENOTSUP;
1660 break;
1661 case CHR_IOCTL_PP_READ_STATUS:
1662 if (ioctl(fd, PPRSTATUS, &b) < 0)
1663 return -ENOTSUP;
1664 *(uint8_t *)arg = b;
1665 break;
1666 case CHR_IOCTL_PP_DATA_DIR:
1667 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1668 return -ENOTSUP;
1669 break;
1670 case CHR_IOCTL_PP_EPP_READ_ADDR:
1671 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1672 struct ParallelIOArg *parg = arg;
1673 int n = read(fd, parg->buffer, parg->count);
1674 if (n != parg->count) {
1675 return -EIO;
1676 }
1677 }
1678 break;
1679 case CHR_IOCTL_PP_EPP_READ:
1680 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1681 struct ParallelIOArg *parg = arg;
1682 int n = read(fd, parg->buffer, parg->count);
1683 if (n != parg->count) {
1684 return -EIO;
1685 }
1686 }
1687 break;
1688 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1689 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1690 struct ParallelIOArg *parg = arg;
1691 int n = write(fd, parg->buffer, parg->count);
1692 if (n != parg->count) {
1693 return -EIO;
1694 }
1695 }
1696 break;
1697 case CHR_IOCTL_PP_EPP_WRITE:
1698 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1699 struct ParallelIOArg *parg = arg;
1700 int n = write(fd, parg->buffer, parg->count);
1701 if (n != parg->count) {
1702 return -EIO;
1703 }
1704 }
1705 break;
1706 default:
1707 return -ENOTSUP;
1708 }
1709 return 0;
1710}
1711
1712static void pp_close(CharDriverState *chr)
1713{
1714 ParallelCharDriver *drv = chr->opaque;
1715 int fd = drv->fd;
1716
1717 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1718 ioctl(fd, PPRELEASE);
1719 close(fd);
Anthony Liguori7267c092011-08-20 22:09:37 -05001720 g_free(drv);
Hans de Goedea425d232011-11-19 10:22:43 +01001721 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001722}
1723
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001724static CharDriverState *qemu_chr_open_pp_fd(int fd,
1725 ChardevCommon *backend,
1726 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001727{
1728 CharDriverState *chr;
1729 ParallelCharDriver *drv;
aliguori6f97dba2008-10-31 18:49:55 +00001730
1731 if (ioctl(fd, PPCLAIM) < 0) {
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02001732 error_setg_errno(errp, errno, "not a parallel port");
aliguori6f97dba2008-10-31 18:49:55 +00001733 close(fd);
Markus Armbruster1f514702012-02-07 15:09:08 +01001734 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00001735 }
1736
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001737 chr = qemu_chr_alloc(backend, errp);
1738 if (!chr) {
1739 return NULL;
1740 }
Paolo Bonzini27ef9cb2016-01-18 11:25:45 +01001741
1742 drv = g_new0(ParallelCharDriver, 1);
1743 chr->opaque = drv;
aliguori6f97dba2008-10-31 18:49:55 +00001744 chr->chr_write = null_chr_write;
1745 chr->chr_ioctl = pp_ioctl;
1746 chr->chr_close = pp_close;
Paolo Bonzini27ef9cb2016-01-18 11:25:45 +01001747
1748 drv->fd = fd;
1749 drv->mode = IEEE1284_MODE_COMPAT;
aliguori6f97dba2008-10-31 18:49:55 +00001750
Markus Armbruster1f514702012-02-07 15:09:08 +01001751 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001752}
1753#endif /* __linux__ */
1754
Aurelien Jarnoa167ba52009-11-29 18:00:41 +01001755#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001756
1757#define HAVE_CHARDEV_PARPORT 1
1758
blueswir16972f932008-11-22 20:49:12 +00001759static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1760{
Stefan Weile0efb992011-02-23 19:09:16 +01001761 int fd = (int)(intptr_t)chr->opaque;
blueswir16972f932008-11-22 20:49:12 +00001762 uint8_t b;
1763
1764 switch(cmd) {
1765 case CHR_IOCTL_PP_READ_DATA:
1766 if (ioctl(fd, PPIGDATA, &b) < 0)
1767 return -ENOTSUP;
1768 *(uint8_t *)arg = b;
1769 break;
1770 case CHR_IOCTL_PP_WRITE_DATA:
1771 b = *(uint8_t *)arg;
1772 if (ioctl(fd, PPISDATA, &b) < 0)
1773 return -ENOTSUP;
1774 break;
1775 case CHR_IOCTL_PP_READ_CONTROL:
1776 if (ioctl(fd, PPIGCTRL, &b) < 0)
1777 return -ENOTSUP;
1778 *(uint8_t *)arg = b;
1779 break;
1780 case CHR_IOCTL_PP_WRITE_CONTROL:
1781 b = *(uint8_t *)arg;
1782 if (ioctl(fd, PPISCTRL, &b) < 0)
1783 return -ENOTSUP;
1784 break;
1785 case CHR_IOCTL_PP_READ_STATUS:
1786 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1787 return -ENOTSUP;
1788 *(uint8_t *)arg = b;
1789 break;
1790 default:
1791 return -ENOTSUP;
1792 }
1793 return 0;
1794}
1795
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001796static CharDriverState *qemu_chr_open_pp_fd(int fd,
1797 ChardevBackend *backend,
1798 Error **errp)
blueswir16972f932008-11-22 20:49:12 +00001799{
1800 CharDriverState *chr;
blueswir16972f932008-11-22 20:49:12 +00001801
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001802 chr = qemu_chr_alloc(common, errp);
1803 if (!chr) {
1804 return NULL;
1805 }
Stefan Weile0efb992011-02-23 19:09:16 +01001806 chr->opaque = (void *)(intptr_t)fd;
blueswir16972f932008-11-22 20:49:12 +00001807 chr->chr_write = null_chr_write;
1808 chr->chr_ioctl = pp_ioctl;
Michael Rothbd5c51e2013-06-07 15:19:53 -05001809 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +01001810 return chr;
blueswir16972f932008-11-22 20:49:12 +00001811}
1812#endif
1813
aliguori6f97dba2008-10-31 18:49:55 +00001814#else /* _WIN32 */
1815
Paolo Bonzinid809ab92015-10-12 09:46:23 +02001816#define HAVE_CHARDEV_SERIAL 1
1817
aliguori6f97dba2008-10-31 18:49:55 +00001818typedef struct {
1819 int max_size;
1820 HANDLE hcom, hrecv, hsend;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001821 OVERLAPPED orecv;
aliguori6f97dba2008-10-31 18:49:55 +00001822 BOOL fpipe;
1823 DWORD len;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001824
1825 /* Protected by the CharDriverState chr_write_lock. */
1826 OVERLAPPED osend;
aliguori6f97dba2008-10-31 18:49:55 +00001827} WinCharState;
1828
Fabien Chouteaudb418a02011-10-06 16:37:51 +02001829typedef struct {
1830 HANDLE hStdIn;
1831 HANDLE hInputReadyEvent;
1832 HANDLE hInputDoneEvent;
1833 HANDLE hInputThread;
1834 uint8_t win_stdio_buf;
1835} WinStdioCharState;
1836
aliguori6f97dba2008-10-31 18:49:55 +00001837#define NSENDBUF 2048
1838#define NRECVBUF 2048
1839#define MAXCONNECT 1
1840#define NTIMEOUT 5000
1841
1842static int win_chr_poll(void *opaque);
1843static int win_chr_pipe_poll(void *opaque);
1844
1845static void win_chr_close(CharDriverState *chr)
1846{
1847 WinCharState *s = chr->opaque;
1848
1849 if (s->hsend) {
1850 CloseHandle(s->hsend);
1851 s->hsend = NULL;
1852 }
1853 if (s->hrecv) {
1854 CloseHandle(s->hrecv);
1855 s->hrecv = NULL;
1856 }
1857 if (s->hcom) {
1858 CloseHandle(s->hcom);
1859 s->hcom = NULL;
1860 }
1861 if (s->fpipe)
1862 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1863 else
1864 qemu_del_polling_cb(win_chr_poll, chr);
Amit Shah793cbfb2009-08-11 21:27:48 +05301865
Hans de Goedea425d232011-11-19 10:22:43 +01001866 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001867}
1868
Paolo Bonzini6511d392015-09-29 15:08:05 +02001869static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001870{
1871 WinCharState *s = chr->opaque;
1872 COMMCONFIG comcfg;
1873 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1874 COMSTAT comstat;
1875 DWORD size;
1876 DWORD err;
1877
1878 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1879 if (!s->hsend) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001880 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00001881 goto fail;
1882 }
1883 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1884 if (!s->hrecv) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001885 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00001886 goto fail;
1887 }
1888
1889 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1890 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1891 if (s->hcom == INVALID_HANDLE_VALUE) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001892 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
aliguori6f97dba2008-10-31 18:49:55 +00001893 s->hcom = NULL;
1894 goto fail;
1895 }
1896
1897 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001898 error_setg(errp, "Failed SetupComm");
aliguori6f97dba2008-10-31 18:49:55 +00001899 goto fail;
1900 }
1901
1902 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1903 size = sizeof(COMMCONFIG);
1904 GetDefaultCommConfig(filename, &comcfg, &size);
1905 comcfg.dcb.DCBlength = sizeof(DCB);
1906 CommConfigDialog(filename, NULL, &comcfg);
1907
1908 if (!SetCommState(s->hcom, &comcfg.dcb)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001909 error_setg(errp, "Failed SetCommState");
aliguori6f97dba2008-10-31 18:49:55 +00001910 goto fail;
1911 }
1912
1913 if (!SetCommMask(s->hcom, EV_ERR)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001914 error_setg(errp, "Failed SetCommMask");
aliguori6f97dba2008-10-31 18:49:55 +00001915 goto fail;
1916 }
1917
1918 cto.ReadIntervalTimeout = MAXDWORD;
1919 if (!SetCommTimeouts(s->hcom, &cto)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001920 error_setg(errp, "Failed SetCommTimeouts");
aliguori6f97dba2008-10-31 18:49:55 +00001921 goto fail;
1922 }
1923
1924 if (!ClearCommError(s->hcom, &err, &comstat)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001925 error_setg(errp, "Failed ClearCommError");
aliguori6f97dba2008-10-31 18:49:55 +00001926 goto fail;
1927 }
1928 qemu_add_polling_cb(win_chr_poll, chr);
1929 return 0;
1930
1931 fail:
1932 win_chr_close(chr);
1933 return -1;
1934}
1935
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001936/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001937static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1938{
1939 WinCharState *s = chr->opaque;
1940 DWORD len, ret, size, err;
1941
1942 len = len1;
1943 ZeroMemory(&s->osend, sizeof(s->osend));
1944 s->osend.hEvent = s->hsend;
1945 while (len > 0) {
1946 if (s->hsend)
1947 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1948 else
1949 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1950 if (!ret) {
1951 err = GetLastError();
1952 if (err == ERROR_IO_PENDING) {
1953 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1954 if (ret) {
1955 buf += size;
1956 len -= size;
1957 } else {
1958 break;
1959 }
1960 } else {
1961 break;
1962 }
1963 } else {
1964 buf += size;
1965 len -= size;
1966 }
1967 }
1968 return len1 - len;
1969}
1970
1971static int win_chr_read_poll(CharDriverState *chr)
1972{
1973 WinCharState *s = chr->opaque;
1974
Anthony Liguori909cda12011-08-15 11:17:31 -05001975 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001976 return s->max_size;
1977}
1978
1979static void win_chr_readfile(CharDriverState *chr)
1980{
1981 WinCharState *s = chr->opaque;
1982 int ret, err;
Amit Shah9bd78542009-11-03 19:59:54 +05301983 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00001984 DWORD size;
1985
1986 ZeroMemory(&s->orecv, sizeof(s->orecv));
1987 s->orecv.hEvent = s->hrecv;
1988 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1989 if (!ret) {
1990 err = GetLastError();
1991 if (err == ERROR_IO_PENDING) {
1992 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1993 }
1994 }
1995
1996 if (size > 0) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05001997 qemu_chr_be_write(chr, buf, size);
aliguori6f97dba2008-10-31 18:49:55 +00001998 }
1999}
2000
2001static void win_chr_read(CharDriverState *chr)
2002{
2003 WinCharState *s = chr->opaque;
2004
2005 if (s->len > s->max_size)
2006 s->len = s->max_size;
2007 if (s->len == 0)
2008 return;
2009
2010 win_chr_readfile(chr);
2011}
2012
2013static int win_chr_poll(void *opaque)
2014{
2015 CharDriverState *chr = opaque;
2016 WinCharState *s = chr->opaque;
2017 COMSTAT status;
2018 DWORD comerr;
2019
2020 ClearCommError(s->hcom, &comerr, &status);
2021 if (status.cbInQue > 0) {
2022 s->len = status.cbInQue;
2023 win_chr_read_poll(chr);
2024 win_chr_read(chr);
2025 return 1;
2026 }
2027 return 0;
2028}
2029
Paolo Bonzini6511d392015-09-29 15:08:05 +02002030static CharDriverState *qemu_chr_open_win_path(const char *filename,
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002031 ChardevCommon *backend,
Paolo Bonzini6511d392015-09-29 15:08:05 +02002032 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002033{
2034 CharDriverState *chr;
2035 WinCharState *s;
2036
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002037 chr = qemu_chr_alloc(backend, errp);
2038 if (!chr) {
2039 return NULL;
2040 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002041 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002042 chr->opaque = s;
2043 chr->chr_write = win_chr_write;
2044 chr->chr_close = win_chr_close;
2045
Paolo Bonzini6511d392015-09-29 15:08:05 +02002046 if (win_chr_init(chr, filename, errp) < 0) {
Stefan Weil2e02e182011-10-07 07:38:46 +02002047 g_free(s);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002048 qemu_chr_free_common(chr);
Markus Armbruster1f514702012-02-07 15:09:08 +01002049 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002050 }
Markus Armbruster1f514702012-02-07 15:09:08 +01002051 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002052}
2053
2054static int win_chr_pipe_poll(void *opaque)
2055{
2056 CharDriverState *chr = opaque;
2057 WinCharState *s = chr->opaque;
2058 DWORD size;
2059
2060 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2061 if (size > 0) {
2062 s->len = size;
2063 win_chr_read_poll(chr);
2064 win_chr_read(chr);
2065 return 1;
2066 }
2067 return 0;
2068}
2069
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002070static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2071 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002072{
2073 WinCharState *s = chr->opaque;
2074 OVERLAPPED ov;
2075 int ret;
2076 DWORD size;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002077 char *openname;
aliguori6f97dba2008-10-31 18:49:55 +00002078
2079 s->fpipe = TRUE;
2080
2081 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2082 if (!s->hsend) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002083 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00002084 goto fail;
2085 }
2086 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2087 if (!s->hrecv) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002088 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00002089 goto fail;
2090 }
2091
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002092 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
aliguori6f97dba2008-10-31 18:49:55 +00002093 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2094 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2095 PIPE_WAIT,
2096 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002097 g_free(openname);
aliguori6f97dba2008-10-31 18:49:55 +00002098 if (s->hcom == INVALID_HANDLE_VALUE) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002099 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
aliguori6f97dba2008-10-31 18:49:55 +00002100 s->hcom = NULL;
2101 goto fail;
2102 }
2103
2104 ZeroMemory(&ov, sizeof(ov));
2105 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2106 ret = ConnectNamedPipe(s->hcom, &ov);
2107 if (ret) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002108 error_setg(errp, "Failed ConnectNamedPipe");
aliguori6f97dba2008-10-31 18:49:55 +00002109 goto fail;
2110 }
2111
2112 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2113 if (!ret) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002114 error_setg(errp, "Failed GetOverlappedResult");
aliguori6f97dba2008-10-31 18:49:55 +00002115 if (ov.hEvent) {
2116 CloseHandle(ov.hEvent);
2117 ov.hEvent = NULL;
2118 }
2119 goto fail;
2120 }
2121
2122 if (ov.hEvent) {
2123 CloseHandle(ov.hEvent);
2124 ov.hEvent = NULL;
2125 }
2126 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2127 return 0;
2128
2129 fail:
2130 win_chr_close(chr);
2131 return -1;
2132}
2133
2134
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002135static CharDriverState *qemu_chr_open_pipe(const char *id,
2136 ChardevBackend *backend,
2137 ChardevReturn *ret,
2138 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002139{
Eric Blake130257d2015-10-26 16:34:57 -06002140 ChardevHostdev *opts = backend->u.pipe;
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01002141 const char *filename = opts->device;
aliguori6f97dba2008-10-31 18:49:55 +00002142 CharDriverState *chr;
2143 WinCharState *s;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002144 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
aliguori6f97dba2008-10-31 18:49:55 +00002145
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002146 chr = qemu_chr_alloc(common, errp);
2147 if (!chr) {
2148 return NULL;
2149 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002150 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002151 chr->opaque = s;
2152 chr->chr_write = win_chr_write;
2153 chr->chr_close = win_chr_close;
2154
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002155 if (win_chr_pipe_init(chr, filename, errp) < 0) {
Stefan Weil2e02e182011-10-07 07:38:46 +02002156 g_free(s);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002157 qemu_chr_free_common(chr);
Markus Armbruster1f514702012-02-07 15:09:08 +01002158 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002159 }
Markus Armbruster1f514702012-02-07 15:09:08 +01002160 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002161}
2162
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002163static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2164 ChardevCommon *backend,
2165 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002166{
2167 CharDriverState *chr;
2168 WinCharState *s;
2169
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002170 chr = qemu_chr_alloc(backend, errp);
2171 if (!chr) {
2172 return NULL;
2173 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002174 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002175 s->hcom = fd_out;
2176 chr->opaque = s;
2177 chr->chr_write = win_chr_write;
Markus Armbruster1f514702012-02-07 15:09:08 +01002178 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002179}
2180
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02002181static CharDriverState *qemu_chr_open_win_con(const char *id,
2182 ChardevBackend *backend,
2183 ChardevReturn *ret,
2184 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002185{
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002186 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.console);
2187 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2188 common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00002189}
2190
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002191static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2192{
2193 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2194 DWORD dwSize;
2195 int len1;
2196
2197 len1 = len;
2198
2199 while (len1 > 0) {
2200 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2201 break;
2202 }
2203 buf += dwSize;
2204 len1 -= dwSize;
2205 }
2206
2207 return len - len1;
2208}
2209
2210static void win_stdio_wait_func(void *opaque)
2211{
2212 CharDriverState *chr = opaque;
2213 WinStdioCharState *stdio = chr->opaque;
2214 INPUT_RECORD buf[4];
2215 int ret;
2216 DWORD dwSize;
2217 int i;
2218
Stefan Weildff74242013-12-07 14:48:04 +01002219 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002220
2221 if (!ret) {
2222 /* Avoid error storm */
2223 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2224 return;
2225 }
2226
2227 for (i = 0; i < dwSize; i++) {
2228 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2229
2230 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2231 int j;
2232 if (kev->uChar.AsciiChar != 0) {
2233 for (j = 0; j < kev->wRepeatCount; j++) {
2234 if (qemu_chr_be_can_write(chr)) {
2235 uint8_t c = kev->uChar.AsciiChar;
2236 qemu_chr_be_write(chr, &c, 1);
2237 }
2238 }
2239 }
2240 }
2241 }
2242}
2243
2244static DWORD WINAPI win_stdio_thread(LPVOID param)
2245{
2246 CharDriverState *chr = param;
2247 WinStdioCharState *stdio = chr->opaque;
2248 int ret;
2249 DWORD dwSize;
2250
2251 while (1) {
2252
2253 /* Wait for one byte */
2254 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2255
2256 /* Exit in case of error, continue if nothing read */
2257 if (!ret) {
2258 break;
2259 }
2260 if (!dwSize) {
2261 continue;
2262 }
2263
2264 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2265 if (stdio->win_stdio_buf == '\r') {
2266 continue;
2267 }
2268
2269 /* Signal the main thread and wait until the byte was eaten */
2270 if (!SetEvent(stdio->hInputReadyEvent)) {
2271 break;
2272 }
2273 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2274 != WAIT_OBJECT_0) {
2275 break;
2276 }
2277 }
2278
2279 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2280 return 0;
2281}
2282
2283static void win_stdio_thread_wait_func(void *opaque)
2284{
2285 CharDriverState *chr = opaque;
2286 WinStdioCharState *stdio = chr->opaque;
2287
2288 if (qemu_chr_be_can_write(chr)) {
2289 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2290 }
2291
2292 SetEvent(stdio->hInputDoneEvent);
2293}
2294
2295static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2296{
2297 WinStdioCharState *stdio = chr->opaque;
2298 DWORD dwMode = 0;
2299
2300 GetConsoleMode(stdio->hStdIn, &dwMode);
2301
2302 if (echo) {
2303 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2304 } else {
2305 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2306 }
2307}
2308
2309static void win_stdio_close(CharDriverState *chr)
2310{
2311 WinStdioCharState *stdio = chr->opaque;
2312
2313 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2314 CloseHandle(stdio->hInputReadyEvent);
2315 }
2316 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2317 CloseHandle(stdio->hInputDoneEvent);
2318 }
2319 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2320 TerminateThread(stdio->hInputThread, 0);
2321 }
2322
2323 g_free(chr->opaque);
2324 g_free(chr);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002325}
2326
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002327static CharDriverState *qemu_chr_open_stdio(const char *id,
2328 ChardevBackend *backend,
2329 ChardevReturn *ret,
2330 Error **errp)
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002331{
2332 CharDriverState *chr;
2333 WinStdioCharState *stdio;
2334 DWORD dwMode;
2335 int is_console = 0;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002336 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002337
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002338 chr = qemu_chr_alloc(common, errp);
2339 if (!chr) {
2340 return NULL;
2341 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002342 stdio = g_new0(WinStdioCharState, 1);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002343
2344 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2345 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002346 error_setg(errp, "cannot open stdio: invalid handle");
2347 return NULL;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002348 }
2349
2350 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2351
2352 chr->opaque = stdio;
2353 chr->chr_write = win_stdio_write;
2354 chr->chr_close = win_stdio_close;
2355
Anthony Liguoried7a1542013-03-05 23:21:17 +05302356 if (is_console) {
2357 if (qemu_add_wait_object(stdio->hStdIn,
2358 win_stdio_wait_func, chr)) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002359 error_setg(errp, "qemu_add_wait_object: failed");
2360 goto err1;
Anthony Liguoried7a1542013-03-05 23:21:17 +05302361 }
2362 } else {
2363 DWORD dwId;
2364
2365 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2366 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002367 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
Anthony Liguoried7a1542013-03-05 23:21:17 +05302368 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002369 error_setg(errp, "cannot create event");
2370 goto err2;
Anthony Liguoried7a1542013-03-05 23:21:17 +05302371 }
2372 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2373 win_stdio_thread_wait_func, chr)) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002374 error_setg(errp, "qemu_add_wait_object: failed");
2375 goto err2;
2376 }
2377 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2378 chr, 0, &dwId);
2379
2380 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2381 error_setg(errp, "cannot create stdio thread");
2382 goto err3;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002383 }
2384 }
2385
2386 dwMode |= ENABLE_LINE_INPUT;
2387
Anthony Liguoried7a1542013-03-05 23:21:17 +05302388 if (is_console) {
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002389 /* set the terminal in raw mode */
2390 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2391 dwMode |= ENABLE_PROCESSED_INPUT;
2392 }
2393
2394 SetConsoleMode(stdio->hStdIn, dwMode);
2395
2396 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2397 qemu_chr_fe_set_echo(chr, false);
2398
Markus Armbruster1f514702012-02-07 15:09:08 +01002399 return chr;
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002400
2401err3:
2402 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2403err2:
2404 CloseHandle(stdio->hInputReadyEvent);
2405 CloseHandle(stdio->hInputDoneEvent);
2406err1:
2407 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2408 return NULL;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002409}
aliguori6f97dba2008-10-31 18:49:55 +00002410#endif /* !_WIN32 */
2411
Anthony Liguori5ab82112013-03-05 23:21:31 +05302412
aliguori6f97dba2008-10-31 18:49:55 +00002413/***********************************************************/
2414/* UDP Net console */
2415
2416typedef struct {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002417 QIOChannel *ioc;
Amit Shah9bd78542009-11-03 19:59:54 +05302418 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00002419 int bufcnt;
2420 int bufptr;
2421 int max_size;
2422} NetCharDriver;
2423
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02002424/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00002425static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2426{
2427 NetCharDriver *s = chr->opaque;
2428
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002429 return qio_channel_write(
2430 s->ioc, (const char *)buf, len, NULL);
aliguori6f97dba2008-10-31 18:49:55 +00002431}
2432
2433static int udp_chr_read_poll(void *opaque)
2434{
2435 CharDriverState *chr = opaque;
2436 NetCharDriver *s = chr->opaque;
2437
Anthony Liguori909cda12011-08-15 11:17:31 -05002438 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002439
2440 /* If there were any stray characters in the queue process them
2441 * first
2442 */
2443 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002444 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
aliguori6f97dba2008-10-31 18:49:55 +00002445 s->bufptr++;
Anthony Liguori909cda12011-08-15 11:17:31 -05002446 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002447 }
2448 return s->max_size;
2449}
2450
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002451static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00002452{
2453 CharDriverState *chr = opaque;
2454 NetCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002455 ssize_t ret;
aliguori6f97dba2008-10-31 18:49:55 +00002456
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02002457 if (s->max_size == 0) {
2458 return TRUE;
2459 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002460 ret = qio_channel_read(
2461 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2462 if (ret <= 0) {
Amit Shah26da70c2013-08-28 15:23:37 +05302463 remove_fd_in_watch(chr);
Anthony Liguori76a96442013-03-05 23:21:21 +05302464 return FALSE;
2465 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002466 s->bufcnt = ret;
aliguori6f97dba2008-10-31 18:49:55 +00002467
2468 s->bufptr = 0;
2469 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002470 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
aliguori6f97dba2008-10-31 18:49:55 +00002471 s->bufptr++;
Anthony Liguori909cda12011-08-15 11:17:31 -05002472 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002473 }
Anthony Liguori76a96442013-03-05 23:21:21 +05302474
2475 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00002476}
2477
2478static void udp_chr_update_read_handler(CharDriverState *chr)
2479{
2480 NetCharDriver *s = chr->opaque;
2481
Amit Shah26da70c2013-08-28 15:23:37 +05302482 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002483 if (s->ioc) {
2484 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2485 udp_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05302486 udp_chr_read, chr);
aliguori6f97dba2008-10-31 18:49:55 +00002487 }
2488}
2489
aliguori819f56b2009-03-28 17:58:14 +00002490static void udp_chr_close(CharDriverState *chr)
2491{
2492 NetCharDriver *s = chr->opaque;
Amit Shah26da70c2013-08-28 15:23:37 +05302493
2494 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002495 if (s->ioc) {
2496 object_unref(OBJECT(s->ioc));
aliguori819f56b2009-03-28 17:58:14 +00002497 }
Anthony Liguori7267c092011-08-20 22:09:37 -05002498 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01002499 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori819f56b2009-03-28 17:58:14 +00002500}
2501
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002502static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2503 ChardevCommon *backend,
2504 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002505{
2506 CharDriverState *chr = NULL;
2507 NetCharDriver *s = NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002508
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002509 chr = qemu_chr_alloc(backend, errp);
2510 if (!chr) {
2511 return NULL;
2512 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002513 s = g_new0(NetCharDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002514
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002515 s->ioc = QIO_CHANNEL(sioc);
aliguori6f97dba2008-10-31 18:49:55 +00002516 s->bufcnt = 0;
2517 s->bufptr = 0;
2518 chr->opaque = s;
2519 chr->chr_write = udp_chr_write;
2520 chr->chr_update_read_handler = udp_chr_update_read_handler;
aliguori819f56b2009-03-28 17:58:14 +00002521 chr->chr_close = udp_chr_close;
Michael Rothbd5c51e2013-06-07 15:19:53 -05002522 /* be isn't opened until we get a connection */
2523 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +01002524 return chr;
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01002525}
aliguori6f97dba2008-10-31 18:49:55 +00002526
aliguori6f97dba2008-10-31 18:49:55 +00002527/***********************************************************/
2528/* TCP Net console */
2529
2530typedef struct {
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002531 QIOChannel *ioc; /* Client I/O channel */
2532 QIOChannelSocket *sioc; /* Client master channel */
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002533 QIOChannelSocket *listen_ioc;
Amit Shah7ba9add2013-08-28 15:18:29 +05302534 guint listen_tag;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002535 QCryptoTLSCreds *tls_creds;
aliguori6f97dba2008-10-31 18:49:55 +00002536 int connected;
2537 int max_size;
2538 int do_telnetopt;
2539 int do_nodelay;
2540 int is_unix;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002541 int *read_msgfds;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002542 size_t read_msgfds_num;
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002543 int *write_msgfds;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002544 size_t write_msgfds_num;
Corey Minyardcfb429c2014-10-02 11:17:35 -05002545
2546 SocketAddress *addr;
2547 bool is_listen;
2548 bool is_telnet;
Corey Minyard5dd1f022014-10-02 11:17:37 -05002549
2550 guint reconnect_timer;
2551 int64_t reconnect_time;
Corey Minyard5008e5b2014-10-08 07:11:55 -05002552 bool connect_err_reported;
aliguori6f97dba2008-10-31 18:49:55 +00002553} TCPCharDriver;
2554
Corey Minyard5dd1f022014-10-02 11:17:37 -05002555static gboolean socket_reconnect_timeout(gpointer opaque);
2556
2557static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2558{
2559 TCPCharDriver *s = chr->opaque;
2560 assert(s->connected == 0);
2561 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2562 socket_reconnect_timeout, chr);
2563}
2564
Corey Minyard5008e5b2014-10-08 07:11:55 -05002565static void check_report_connect_error(CharDriverState *chr,
2566 Error *err)
2567{
2568 TCPCharDriver *s = chr->opaque;
2569
2570 if (!s->connect_err_reported) {
2571 error_report("Unable to connect character device %s: %s",
2572 chr->label, error_get_pretty(err));
2573 s->connect_err_reported = true;
2574 }
2575 qemu_chr_socket_restart_timer(chr);
2576}
2577
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002578static gboolean tcp_chr_accept(QIOChannel *chan,
2579 GIOCondition cond,
2580 void *opaque);
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002581
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02002582/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00002583static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2584{
2585 TCPCharDriver *s = chr->opaque;
2586 if (s->connected) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002587 int ret = io_channel_send_full(s->ioc, buf, len,
2588 s->write_msgfds,
2589 s->write_msgfds_num);
2590
2591 /* free the written msgfds, no matter what */
2592 if (s->write_msgfds_num) {
2593 g_free(s->write_msgfds);
2594 s->write_msgfds = 0;
2595 s->write_msgfds_num = 0;
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002596 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002597
2598 return ret;
Anthony Liguori455aa1e2012-09-05 13:52:49 -05002599 } else {
Anthony Liguori6db0fdc2012-09-12 14:34:07 -05002600 /* XXX: indicate an error ? */
Anthony Liguori455aa1e2012-09-05 13:52:49 -05002601 return len;
aliguori6f97dba2008-10-31 18:49:55 +00002602 }
2603}
2604
2605static int tcp_chr_read_poll(void *opaque)
2606{
2607 CharDriverState *chr = opaque;
2608 TCPCharDriver *s = chr->opaque;
2609 if (!s->connected)
2610 return 0;
Anthony Liguori909cda12011-08-15 11:17:31 -05002611 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002612 return s->max_size;
2613}
2614
2615#define IAC 255
2616#define IAC_BREAK 243
2617static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2618 TCPCharDriver *s,
2619 uint8_t *buf, int *size)
2620{
2621 /* Handle any telnet client's basic IAC options to satisfy char by
2622 * char mode with no echo. All IAC options will be removed from
2623 * the buf and the do_telnetopt variable will be used to track the
2624 * state of the width of the IAC information.
2625 *
2626 * IAC commands come in sets of 3 bytes with the exception of the
2627 * "IAC BREAK" command and the double IAC.
2628 */
2629
2630 int i;
2631 int j = 0;
2632
2633 for (i = 0; i < *size; i++) {
2634 if (s->do_telnetopt > 1) {
2635 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2636 /* Double IAC means send an IAC */
2637 if (j != i)
2638 buf[j] = buf[i];
2639 j++;
2640 s->do_telnetopt = 1;
2641 } else {
2642 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2643 /* Handle IAC break commands by sending a serial break */
Hans de Goedea425d232011-11-19 10:22:43 +01002644 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
aliguori6f97dba2008-10-31 18:49:55 +00002645 s->do_telnetopt++;
2646 }
2647 s->do_telnetopt++;
2648 }
2649 if (s->do_telnetopt >= 4) {
2650 s->do_telnetopt = 1;
2651 }
2652 } else {
2653 if ((unsigned char)buf[i] == IAC) {
2654 s->do_telnetopt = 2;
2655 } else {
2656 if (j != i)
2657 buf[j] = buf[i];
2658 j++;
2659 }
2660 }
2661 }
2662 *size = j;
2663}
2664
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002665static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
Mark McLoughlin7d174052009-07-22 09:11:39 +01002666{
2667 TCPCharDriver *s = chr->opaque;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002668 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2669
Michael S. Tsirkinc4095722014-11-02 18:48:32 +02002670 assert(num <= TCP_MAX_FDS);
2671
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002672 if (to_copy) {
Stefan Hajnoczid2fc39b2014-06-22 10:38:37 +08002673 int i;
2674
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002675 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2676
Stefan Hajnoczid2fc39b2014-06-22 10:38:37 +08002677 /* Close unused fds */
2678 for (i = to_copy; i < s->read_msgfds_num; i++) {
2679 close(s->read_msgfds[i]);
2680 }
2681
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002682 g_free(s->read_msgfds);
2683 s->read_msgfds = 0;
2684 s->read_msgfds_num = 0;
2685 }
2686
2687 return to_copy;
Mark McLoughlin7d174052009-07-22 09:11:39 +01002688}
2689
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002690static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2691{
2692 TCPCharDriver *s = chr->opaque;
2693
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002694 if (!qio_channel_has_feature(s->ioc,
2695 QIO_CHANNEL_FEATURE_FD_PASS)) {
2696 return -1;
2697 }
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002698 /* clear old pending fd array */
Daniel P. Berrangeef1e1e02015-08-26 12:17:18 +01002699 g_free(s->write_msgfds);
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002700
2701 if (num) {
Markus Armbruster2d528d42015-09-14 13:54:03 +02002702 s->write_msgfds = g_new(int, num);
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002703 memcpy(s->write_msgfds, fds, num * sizeof(int));
2704 }
2705
2706 s->write_msgfds_num = num;
2707
2708 return 0;
2709}
2710
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002711static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
Mark McLoughlin7d174052009-07-22 09:11:39 +01002712{
2713 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002714 struct iovec iov = { .iov_base = buf, .iov_len = len };
2715 int ret;
2716 size_t i;
2717 int *msgfds = NULL;
2718 size_t msgfds_num = 0;
Mark McLoughlin7d174052009-07-22 09:11:39 +01002719
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002720 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2721 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2722 &msgfds, &msgfds_num,
2723 NULL);
2724 } else {
2725 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2726 NULL, NULL,
2727 NULL);
2728 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002729
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002730 if (msgfds_num) {
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002731 /* close and clean read_msgfds */
2732 for (i = 0; i < s->read_msgfds_num; i++) {
2733 close(s->read_msgfds[i]);
2734 }
Stefan Hajnoczi9b938c72013-03-27 10:10:46 +01002735
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002736 if (s->read_msgfds_num) {
2737 g_free(s->read_msgfds);
2738 }
2739
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002740 s->read_msgfds = msgfds;
2741 s->read_msgfds_num = msgfds_num;
2742 }
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002743
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002744 for (i = 0; i < s->read_msgfds_num; i++) {
2745 int fd = s->read_msgfds[i];
2746 if (fd < 0) {
2747 continue;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002748 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002749
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002750 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2751 qemu_set_block(fd);
Mark McLoughlin9977c892009-07-22 09:11:38 +01002752
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002753#ifndef MSG_CMSG_CLOEXEC
2754 qemu_set_cloexec(fd);
Corey Bryant06138652012-08-14 16:43:42 -04002755#endif
Corey Bryant06138652012-08-14 16:43:42 -04002756 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002757
2758 return ret;
Mark McLoughlin9977c892009-07-22 09:11:38 +01002759}
Mark McLoughlin9977c892009-07-22 09:11:38 +01002760
Amit Shahd3cc5bc2013-03-05 23:21:25 +05302761static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2762{
2763 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002764 return qio_channel_create_watch(s->ioc, cond);
Amit Shahd3cc5bc2013-03-05 23:21:25 +05302765}
2766
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002767static void tcp_chr_disconnect(CharDriverState *chr)
2768{
2769 TCPCharDriver *s = chr->opaque;
2770
2771 s->connected = 0;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002772 if (s->listen_ioc) {
2773 s->listen_tag = qio_channel_add_watch(
2774 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002775 }
2776 remove_fd_in_watch(chr);
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002777 object_unref(OBJECT(s->sioc));
2778 s->sioc = NULL;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002779 object_unref(OBJECT(s->ioc));
2780 s->ioc = NULL;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002781 g_free(chr->filename);
2782 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2783 s->is_listen, s->is_telnet);
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002784 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
Corey Minyard5dd1f022014-10-02 11:17:37 -05002785 if (s->reconnect_time) {
2786 qemu_chr_socket_restart_timer(chr);
2787 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002788}
2789
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002790static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00002791{
2792 CharDriverState *chr = opaque;
2793 TCPCharDriver *s = chr->opaque;
Amit Shah9bd78542009-11-03 19:59:54 +05302794 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00002795 int len, size;
2796
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302797 if (!s->connected || s->max_size <= 0) {
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02002798 return TRUE;
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302799 }
aliguori6f97dba2008-10-31 18:49:55 +00002800 len = sizeof(buf);
2801 if (len > s->max_size)
2802 len = s->max_size;
Mark McLoughlin9977c892009-07-22 09:11:38 +01002803 size = tcp_chr_recv(chr, (void *)buf, len);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002804 if (size == 0 || size == -1) {
aliguori6f97dba2008-10-31 18:49:55 +00002805 /* connection closed */
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002806 tcp_chr_disconnect(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002807 } else if (size > 0) {
2808 if (s->do_telnetopt)
2809 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2810 if (size > 0)
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002811 qemu_chr_be_write(chr, buf, size);
aliguori6f97dba2008-10-31 18:49:55 +00002812 }
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302813
2814 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00002815}
2816
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002817static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2818{
2819 TCPCharDriver *s = chr->opaque;
2820 int size;
2821
2822 if (!s->connected) {
2823 return 0;
2824 }
2825
2826 size = tcp_chr_recv(chr, (void *) buf, len);
2827 if (size == 0) {
2828 /* connection closed */
2829 tcp_chr_disconnect(chr);
2830 }
2831
2832 return size;
2833}
2834
aliguori6f97dba2008-10-31 18:49:55 +00002835static void tcp_chr_connect(void *opaque)
2836{
2837 CharDriverState *chr = opaque;
2838 TCPCharDriver *s = chr->opaque;
Corey Minyard16cc4ff2014-10-02 11:17:36 -05002839
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002840 g_free(chr->filename);
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002841 chr->filename = sockaddr_to_str(
2842 &s->sioc->localAddr, s->sioc->localAddrLen,
2843 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2844 s->is_listen, s->is_telnet);
aliguori6f97dba2008-10-31 18:49:55 +00002845
2846 s->connected = 1;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002847 if (s->ioc) {
2848 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2849 tcp_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05302850 tcp_chr_read, chr);
David Gibsonbbdd2ad2012-09-10 12:30:56 +10002851 }
Hans de Goedefee204f2013-03-26 11:07:54 +01002852 qemu_chr_be_generic_open(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002853}
2854
Gal Hammerac1b84d2014-02-25 12:12:35 +02002855static void tcp_chr_update_read_handler(CharDriverState *chr)
2856{
2857 TCPCharDriver *s = chr->opaque;
2858
2859 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002860 if (s->ioc) {
2861 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2862 tcp_chr_read_poll,
Gal Hammerac1b84d2014-02-25 12:12:35 +02002863 tcp_chr_read, chr);
2864 }
2865}
2866
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00002867typedef struct {
2868 CharDriverState *chr;
2869 char buf[12];
2870 size_t buflen;
2871} TCPCharDriverTelnetInit;
2872
2873static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2874 GIOCondition cond G_GNUC_UNUSED,
2875 gpointer user_data)
aliguori6f97dba2008-10-31 18:49:55 +00002876{
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00002877 TCPCharDriverTelnetInit *init = user_data;
2878 ssize_t ret;
2879
2880 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2881 if (ret < 0) {
2882 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2883 ret = 0;
2884 } else {
2885 tcp_chr_disconnect(init->chr);
2886 return FALSE;
2887 }
2888 }
2889 init->buflen -= ret;
2890
2891 if (init->buflen == 0) {
2892 tcp_chr_connect(init->chr);
2893 return FALSE;
2894 }
2895
2896 memmove(init->buf, init->buf + ret, init->buflen);
2897
2898 return TRUE;
2899}
2900
2901static void tcp_chr_telnet_init(CharDriverState *chr)
2902{
2903 TCPCharDriver *s = chr->opaque;
2904 TCPCharDriverTelnetInit *init =
2905 g_new0(TCPCharDriverTelnetInit, 1);
2906 size_t n = 0;
2907
2908 init->chr = chr;
2909 init->buflen = 12;
2910
2911#define IACSET(x, a, b, c) \
2912 do { \
2913 x[n++] = a; \
2914 x[n++] = b; \
2915 x[n++] = c; \
2916 } while (0)
2917
2918 /* Prep the telnet negotion to put telnet in binary,
2919 * no echo, single char mode */
2920 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2921 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2922 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2923 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2924
2925#undef IACSET
2926
2927 qio_channel_add_watch(
2928 s->ioc, G_IO_OUT,
2929 tcp_chr_telnet_init_io,
2930 init, NULL);
aliguori6f97dba2008-10-31 18:49:55 +00002931}
2932
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002933
2934static void tcp_chr_tls_handshake(Object *source,
2935 Error *err,
2936 gpointer user_data)
2937{
2938 CharDriverState *chr = user_data;
2939 TCPCharDriver *s = chr->opaque;
2940
2941 if (err) {
2942 tcp_chr_disconnect(chr);
2943 } else {
2944 if (s->do_telnetopt) {
2945 tcp_chr_telnet_init(chr);
2946 } else {
2947 tcp_chr_connect(chr);
2948 }
2949 }
2950}
2951
2952
2953static void tcp_chr_tls_init(CharDriverState *chr)
2954{
2955 TCPCharDriver *s = chr->opaque;
2956 QIOChannelTLS *tioc;
2957 Error *err = NULL;
2958
2959 if (s->is_listen) {
2960 tioc = qio_channel_tls_new_server(
2961 s->ioc, s->tls_creds,
2962 NULL, /* XXX Use an ACL */
2963 &err);
2964 } else {
2965 tioc = qio_channel_tls_new_client(
2966 s->ioc, s->tls_creds,
2967 s->addr->u.inet->host,
2968 &err);
2969 }
2970 if (tioc == NULL) {
2971 error_free(err);
2972 tcp_chr_disconnect(chr);
2973 }
2974 object_unref(OBJECT(s->ioc));
2975 s->ioc = QIO_CHANNEL(tioc);
2976
2977 qio_channel_tls_handshake(tioc,
2978 tcp_chr_tls_handshake,
2979 chr,
2980 NULL);
2981}
2982
2983
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002984static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
Daniel P. Berrange13661082011-06-23 13:31:42 +01002985{
2986 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002987 if (s->ioc != NULL) {
Daniel P. Berrange13661082011-06-23 13:31:42 +01002988 return -1;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002989 }
Daniel P. Berrange13661082011-06-23 13:31:42 +01002990
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002991 s->ioc = QIO_CHANNEL(sioc);
2992 object_ref(OBJECT(sioc));
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002993 s->sioc = sioc;
2994 object_ref(OBJECT(sioc));
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002995
2996 if (s->do_nodelay) {
2997 qio_channel_set_delay(s->ioc, false);
2998 }
Paolo Bonzini910b6362013-04-19 17:32:06 +02002999 if (s->listen_tag) {
3000 g_source_remove(s->listen_tag);
3001 s->listen_tag = 0;
3002 }
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003003
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003004 if (s->tls_creds) {
3005 tcp_chr_tls_init(chr);
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003006 } else {
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003007 if (s->do_telnetopt) {
3008 tcp_chr_telnet_init(chr);
3009 } else {
3010 tcp_chr_connect(chr);
3011 }
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003012 }
Daniel P. Berrange13661082011-06-23 13:31:42 +01003013
3014 return 0;
3015}
3016
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003017
3018static int tcp_chr_add_client(CharDriverState *chr, int fd)
3019{
3020 int ret;
3021 QIOChannelSocket *sioc;
3022
3023 sioc = qio_channel_socket_new_fd(fd, NULL);
3024 if (!sioc) {
3025 return -1;
3026 }
3027 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3028 ret = tcp_chr_new_client(chr, sioc);
3029 object_unref(OBJECT(sioc));
3030 return ret;
3031}
3032
3033static gboolean tcp_chr_accept(QIOChannel *channel,
3034 GIOCondition cond,
3035 void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00003036{
3037 CharDriverState *chr = opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003038 QIOChannelSocket *sioc;
aliguori6f97dba2008-10-31 18:49:55 +00003039
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003040 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3041 NULL);
3042 if (!sioc) {
3043 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00003044 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003045
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003046 tcp_chr_new_client(chr, sioc);
3047
3048 object_unref(OBJECT(sioc));
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05303049
3050 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00003051}
3052
3053static void tcp_chr_close(CharDriverState *chr)
3054{
3055 TCPCharDriver *s = chr->opaque;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03003056 int i;
Corey Minyardcfb429c2014-10-02 11:17:35 -05003057
Corey Minyard5dd1f022014-10-02 11:17:37 -05003058 if (s->reconnect_timer) {
3059 g_source_remove(s->reconnect_timer);
3060 s->reconnect_timer = 0;
3061 }
Corey Minyardcfb429c2014-10-02 11:17:35 -05003062 qapi_free_SocketAddress(s->addr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003063 remove_fd_in_watch(chr);
3064 if (s->ioc) {
3065 object_unref(OBJECT(s->ioc));
aliguori819f56b2009-03-28 17:58:14 +00003066 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003067 if (s->listen_tag) {
3068 g_source_remove(s->listen_tag);
3069 s->listen_tag = 0;
3070 }
3071 if (s->listen_ioc) {
3072 object_unref(OBJECT(s->listen_ioc));
aliguori819f56b2009-03-28 17:58:14 +00003073 }
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03003074 if (s->read_msgfds_num) {
3075 for (i = 0; i < s->read_msgfds_num; i++) {
3076 close(s->read_msgfds[i]);
3077 }
3078 g_free(s->read_msgfds);
3079 }
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003080 if (s->tls_creds) {
3081 object_unref(OBJECT(s->tls_creds));
3082 }
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03003083 if (s->write_msgfds_num) {
3084 g_free(s->write_msgfds);
3085 }
Anthony Liguori7267c092011-08-20 22:09:37 -05003086 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01003087 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00003088}
3089
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003090static void qemu_chr_finish_socket_connection(CharDriverState *chr,
3091 QIOChannelSocket *sioc)
aliguori6f97dba2008-10-31 18:49:55 +00003092{
Corey Minyard43ded1a2014-10-02 11:17:34 -05003093 TCPCharDriver *s = chr->opaque;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01003094
Corey Minyardcfb429c2014-10-02 11:17:35 -05003095 if (s->is_listen) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003096 s->listen_ioc = sioc;
3097 s->listen_tag = qio_channel_add_watch(
3098 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01003099 } else {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003100 tcp_chr_new_client(chr, sioc);
3101 object_unref(OBJECT(sioc));
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01003102 }
Corey Minyard43ded1a2014-10-02 11:17:34 -05003103}
3104
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003105static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
Corey Minyard5dd1f022014-10-02 11:17:37 -05003106{
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003107 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003108 CharDriverState *chr = opaque;
Corey Minyard5008e5b2014-10-08 07:11:55 -05003109 TCPCharDriver *s = chr->opaque;
Corey Minyard5dd1f022014-10-02 11:17:37 -05003110
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003111 if (err) {
Corey Minyard5008e5b2014-10-08 07:11:55 -05003112 check_report_connect_error(chr, err);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003113 object_unref(src);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003114 return;
3115 }
3116
Corey Minyard5008e5b2014-10-08 07:11:55 -05003117 s->connect_err_reported = false;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003118 qemu_chr_finish_socket_connection(chr, sioc);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003119}
3120
Corey Minyardcfb429c2014-10-02 11:17:35 -05003121static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
Corey Minyard43ded1a2014-10-02 11:17:34 -05003122{
Corey Minyardcfb429c2014-10-02 11:17:35 -05003123 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003124 QIOChannelSocket *sioc = qio_channel_socket_new();
Corey Minyard43ded1a2014-10-02 11:17:34 -05003125
Corey Minyardcfb429c2014-10-02 11:17:35 -05003126 if (s->is_listen) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003127 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
3128 goto fail;
3129 }
3130 qemu_chr_finish_socket_connection(chr, sioc);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003131 } else if (s->reconnect_time) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003132 qio_channel_socket_connect_async(sioc, s->addr,
3133 qemu_chr_socket_connected,
3134 chr, NULL);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003135 } else {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003136 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3137 goto fail;
3138 }
3139 qemu_chr_finish_socket_connection(chr, sioc);
Corey Minyard43ded1a2014-10-02 11:17:34 -05003140 }
3141
Corey Minyard16cc4ff2014-10-02 11:17:36 -05003142 return true;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003143
3144 fail:
3145 object_unref(OBJECT(sioc));
3146 return false;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01003147}
3148
Lei Li51767e72013-01-25 00:03:19 +08003149/*********************************************************/
Markus Armbruster3949e592013-02-06 21:27:24 +01003150/* Ring buffer chardev */
Lei Li51767e72013-01-25 00:03:19 +08003151
3152typedef struct {
3153 size_t size;
3154 size_t prod;
3155 size_t cons;
3156 uint8_t *cbuf;
Markus Armbruster3949e592013-02-06 21:27:24 +01003157} RingBufCharDriver;
Lei Li51767e72013-01-25 00:03:19 +08003158
Markus Armbruster3949e592013-02-06 21:27:24 +01003159static size_t ringbuf_count(const CharDriverState *chr)
Lei Li51767e72013-01-25 00:03:19 +08003160{
Markus Armbruster3949e592013-02-06 21:27:24 +01003161 const RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003162
Markus Armbruster5c230102013-02-06 21:27:23 +01003163 return d->prod - d->cons;
Lei Li51767e72013-01-25 00:03:19 +08003164}
3165
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003166/* Called with chr_write_lock held. */
Markus Armbruster3949e592013-02-06 21:27:24 +01003167static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
Lei Li51767e72013-01-25 00:03:19 +08003168{
Markus Armbruster3949e592013-02-06 21:27:24 +01003169 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003170 int i;
3171
3172 if (!buf || (len < 0)) {
3173 return -1;
3174 }
3175
3176 for (i = 0; i < len; i++ ) {
Markus Armbruster5c230102013-02-06 21:27:23 +01003177 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3178 if (d->prod - d->cons > d->size) {
Lei Li51767e72013-01-25 00:03:19 +08003179 d->cons = d->prod - d->size;
3180 }
3181 }
3182
3183 return 0;
3184}
3185
Markus Armbruster3949e592013-02-06 21:27:24 +01003186static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
Lei Li51767e72013-01-25 00:03:19 +08003187{
Markus Armbruster3949e592013-02-06 21:27:24 +01003188 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003189 int i;
3190
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003191 qemu_mutex_lock(&chr->chr_write_lock);
Markus Armbruster5c230102013-02-06 21:27:23 +01003192 for (i = 0; i < len && d->cons != d->prod; i++) {
3193 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
Lei Li51767e72013-01-25 00:03:19 +08003194 }
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003195 qemu_mutex_unlock(&chr->chr_write_lock);
Lei Li51767e72013-01-25 00:03:19 +08003196
3197 return i;
3198}
3199
Markus Armbruster3949e592013-02-06 21:27:24 +01003200static void ringbuf_chr_close(struct CharDriverState *chr)
Lei Li51767e72013-01-25 00:03:19 +08003201{
Markus Armbruster3949e592013-02-06 21:27:24 +01003202 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003203
3204 g_free(d->cbuf);
3205 g_free(d);
3206 chr->opaque = NULL;
3207}
3208
Paolo Bonzini479f09a2015-09-29 15:51:14 +02003209static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3210 ChardevBackend *backend,
3211 ChardevReturn *ret,
Markus Armbruster4f573782013-07-26 16:44:32 +02003212 Error **errp)
Lei Li51767e72013-01-25 00:03:19 +08003213{
Eric Blake130257d2015-10-26 16:34:57 -06003214 ChardevRingbuf *opts = backend->u.ringbuf;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003215 ChardevCommon *common = qapi_ChardevRingbuf_base(backend->u.ringbuf);
Lei Li51767e72013-01-25 00:03:19 +08003216 CharDriverState *chr;
Markus Armbruster3949e592013-02-06 21:27:24 +01003217 RingBufCharDriver *d;
Lei Li51767e72013-01-25 00:03:19 +08003218
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003219 chr = qemu_chr_alloc(common, errp);
3220 if (!chr) {
3221 return NULL;
3222 }
Lei Li51767e72013-01-25 00:03:19 +08003223 d = g_malloc(sizeof(*d));
3224
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003225 d->size = opts->has_size ? opts->size : 65536;
Lei Li51767e72013-01-25 00:03:19 +08003226
3227 /* The size must be power of 2 */
3228 if (d->size & (d->size - 1)) {
Markus Armbruster4f573782013-07-26 16:44:32 +02003229 error_setg(errp, "size of ringbuf chardev must be power of two");
Lei Li51767e72013-01-25 00:03:19 +08003230 goto fail;
3231 }
3232
3233 d->prod = 0;
3234 d->cons = 0;
3235 d->cbuf = g_malloc0(d->size);
3236
3237 chr->opaque = d;
Markus Armbruster3949e592013-02-06 21:27:24 +01003238 chr->chr_write = ringbuf_chr_write;
3239 chr->chr_close = ringbuf_chr_close;
Lei Li51767e72013-01-25 00:03:19 +08003240
3241 return chr;
3242
3243fail:
3244 g_free(d);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003245 qemu_chr_free_common(chr);
Lei Li51767e72013-01-25 00:03:19 +08003246 return NULL;
3247}
3248
Hani Benhabiles8e597772014-05-27 23:39:30 +01003249bool chr_is_ringbuf(const CharDriverState *chr)
Lei Li1f590cf2013-01-25 00:03:20 +08003250{
Markus Armbruster3949e592013-02-06 21:27:24 +01003251 return chr->chr_write == ringbuf_chr_write;
Lei Li1f590cf2013-01-25 00:03:20 +08003252}
3253
Markus Armbruster3949e592013-02-06 21:27:24 +01003254void qmp_ringbuf_write(const char *device, const char *data,
Markus Armbruster82e59a62013-02-06 21:27:14 +01003255 bool has_format, enum DataFormat format,
Lei Li1f590cf2013-01-25 00:03:20 +08003256 Error **errp)
3257{
3258 CharDriverState *chr;
Markus Armbrusterc4f331b2013-02-06 21:27:17 +01003259 const uint8_t *write_data;
Lei Li1f590cf2013-01-25 00:03:20 +08003260 int ret;
Peter Crosthwaite3d1bba22013-05-22 13:01:43 +10003261 gsize write_count;
Lei Li1f590cf2013-01-25 00:03:20 +08003262
3263 chr = qemu_chr_find(device);
3264 if (!chr) {
Markus Armbruster1a692782013-02-06 21:27:16 +01003265 error_setg(errp, "Device '%s' not found", device);
Lei Li1f590cf2013-01-25 00:03:20 +08003266 return;
3267 }
3268
Markus Armbruster3949e592013-02-06 21:27:24 +01003269 if (!chr_is_ringbuf(chr)) {
3270 error_setg(errp,"%s is not a ringbuf device", device);
Lei Li1f590cf2013-01-25 00:03:20 +08003271 return;
3272 }
3273
Lei Li1f590cf2013-01-25 00:03:20 +08003274 if (has_format && (format == DATA_FORMAT_BASE64)) {
Daniel P. Berrangee9cf2fe2015-11-23 15:29:59 +00003275 write_data = qbase64_decode(data, -1,
3276 &write_count,
3277 errp);
3278 if (!write_data) {
3279 return;
3280 }
Lei Li1f590cf2013-01-25 00:03:20 +08003281 } else {
3282 write_data = (uint8_t *)data;
Markus Armbruster82e59a62013-02-06 21:27:14 +01003283 write_count = strlen(data);
Lei Li1f590cf2013-01-25 00:03:20 +08003284 }
3285
Markus Armbruster3949e592013-02-06 21:27:24 +01003286 ret = ringbuf_chr_write(chr, write_data, write_count);
Lei Li1f590cf2013-01-25 00:03:20 +08003287
Markus Armbruster13289fb2013-02-06 21:27:18 +01003288 if (write_data != (uint8_t *)data) {
3289 g_free((void *)write_data);
3290 }
3291
Lei Li1f590cf2013-01-25 00:03:20 +08003292 if (ret < 0) {
3293 error_setg(errp, "Failed to write to device %s", device);
3294 return;
3295 }
3296}
3297
Markus Armbruster3949e592013-02-06 21:27:24 +01003298char *qmp_ringbuf_read(const char *device, int64_t size,
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003299 bool has_format, enum DataFormat format,
3300 Error **errp)
Lei Li49b6d722013-01-25 00:03:21 +08003301{
3302 CharDriverState *chr;
Markus Armbrusterc4f331b2013-02-06 21:27:17 +01003303 uint8_t *read_data;
Lei Li49b6d722013-01-25 00:03:21 +08003304 size_t count;
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003305 char *data;
Lei Li49b6d722013-01-25 00:03:21 +08003306
3307 chr = qemu_chr_find(device);
3308 if (!chr) {
Markus Armbruster1a692782013-02-06 21:27:16 +01003309 error_setg(errp, "Device '%s' not found", device);
Lei Li49b6d722013-01-25 00:03:21 +08003310 return NULL;
3311 }
3312
Markus Armbruster3949e592013-02-06 21:27:24 +01003313 if (!chr_is_ringbuf(chr)) {
3314 error_setg(errp,"%s is not a ringbuf device", device);
Lei Li49b6d722013-01-25 00:03:21 +08003315 return NULL;
3316 }
3317
3318 if (size <= 0) {
3319 error_setg(errp, "size must be greater than zero");
3320 return NULL;
3321 }
3322
Markus Armbruster3949e592013-02-06 21:27:24 +01003323 count = ringbuf_count(chr);
Lei Li49b6d722013-01-25 00:03:21 +08003324 size = size > count ? count : size;
Markus Armbruster44f3bcd2013-02-06 21:27:20 +01003325 read_data = g_malloc(size + 1);
Lei Li49b6d722013-01-25 00:03:21 +08003326
Markus Armbruster3949e592013-02-06 21:27:24 +01003327 ringbuf_chr_read(chr, read_data, size);
Lei Li49b6d722013-01-25 00:03:21 +08003328
3329 if (has_format && (format == DATA_FORMAT_BASE64)) {
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003330 data = g_base64_encode(read_data, size);
Markus Armbruster13289fb2013-02-06 21:27:18 +01003331 g_free(read_data);
Lei Li49b6d722013-01-25 00:03:21 +08003332 } else {
Markus Armbruster3949e592013-02-06 21:27:24 +01003333 /*
3334 * FIXME should read only complete, valid UTF-8 characters up
3335 * to @size bytes. Invalid sequences should be replaced by a
3336 * suitable replacement character. Except when (and only
3337 * when) ring buffer lost characters since last read, initial
3338 * continuation characters should be dropped.
3339 */
Markus Armbruster44f3bcd2013-02-06 21:27:20 +01003340 read_data[size] = 0;
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003341 data = (char *)read_data;
Lei Li49b6d722013-01-25 00:03:21 +08003342 }
3343
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003344 return data;
Lei Li49b6d722013-01-25 00:03:21 +08003345}
3346
Gerd Hoffmann33521632009-12-08 13:11:49 +01003347QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003348{
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003349 char host[65], port[33], width[8], height[8];
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003350 int pos;
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003351 const char *p;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003352 QemuOpts *opts;
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003353 Error *local_err = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003354
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003355 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003356 if (local_err) {
Markus Armbruster33394882015-02-10 15:21:26 +01003357 error_report_err(local_err);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003358 return NULL;
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003359 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003360
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003361 if (strstart(filename, "mon:", &p)) {
3362 filename = p;
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003363 qemu_opt_set(opts, "mux", "on", &error_abort);
Paolo Bonzini02c4bdf2013-07-03 20:29:45 +04003364 if (strcmp(filename, "stdio") == 0) {
3365 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3366 * but pass it to the guest. Handle this only for compat syntax,
3367 * for -chardev syntax we have special option for this.
3368 * This is what -nographic did, redirecting+muxing serial+monitor
3369 * to stdio causing Ctrl+C to be passed to guest. */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003370 qemu_opt_set(opts, "signal", "off", &error_abort);
Paolo Bonzini02c4bdf2013-07-03 20:29:45 +04003371 }
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003372 }
3373
Gerd Hoffmannf0457e82009-09-10 10:58:45 +02003374 if (strcmp(filename, "null") == 0 ||
3375 strcmp(filename, "pty") == 0 ||
3376 strcmp(filename, "msmouse") == 0 ||
Gerd Hoffmanndc1c21e2009-09-10 10:58:46 +02003377 strcmp(filename, "braille") == 0 ||
Paolo Bonzini56923992014-07-11 09:44:26 +02003378 strcmp(filename, "testdev") == 0 ||
Gerd Hoffmannf0457e82009-09-10 10:58:45 +02003379 strcmp(filename, "stdio") == 0) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003380 qemu_opt_set(opts, "backend", filename, &error_abort);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003381 return opts;
3382 }
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003383 if (strstart(filename, "vc", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003384 qemu_opt_set(opts, "backend", "vc", &error_abort);
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003385 if (*p == ':') {
Stefan Weil49aa4052013-09-30 23:04:49 +02003386 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003387 /* pixels */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003388 qemu_opt_set(opts, "width", width, &error_abort);
3389 qemu_opt_set(opts, "height", height, &error_abort);
Stefan Weil49aa4052013-09-30 23:04:49 +02003390 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003391 /* chars */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003392 qemu_opt_set(opts, "cols", width, &error_abort);
3393 qemu_opt_set(opts, "rows", height, &error_abort);
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003394 } else {
3395 goto fail;
3396 }
3397 }
3398 return opts;
3399 }
Gerd Hoffmannd6c983c2009-09-10 10:58:47 +02003400 if (strcmp(filename, "con:") == 0) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003401 qemu_opt_set(opts, "backend", "console", &error_abort);
Gerd Hoffmannd6c983c2009-09-10 10:58:47 +02003402 return opts;
3403 }
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003404 if (strstart(filename, "COM", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003405 qemu_opt_set(opts, "backend", "serial", &error_abort);
3406 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003407 return opts;
3408 }
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003409 if (strstart(filename, "file:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003410 qemu_opt_set(opts, "backend", "file", &error_abort);
3411 qemu_opt_set(opts, "path", p, &error_abort);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003412 return opts;
3413 }
3414 if (strstart(filename, "pipe:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003415 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3416 qemu_opt_set(opts, "path", p, &error_abort);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003417 return opts;
3418 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003419 if (strstart(filename, "tcp:", &p) ||
3420 strstart(filename, "telnet:", &p)) {
3421 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3422 host[0] = 0;
3423 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3424 goto fail;
3425 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003426 qemu_opt_set(opts, "backend", "socket", &error_abort);
3427 qemu_opt_set(opts, "host", host, &error_abort);
3428 qemu_opt_set(opts, "port", port, &error_abort);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003429 if (p[pos] == ',') {
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003430 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3431 if (local_err) {
3432 error_report_err(local_err);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003433 goto fail;
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003434 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003435 }
3436 if (strstart(filename, "telnet:", &p))
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003437 qemu_opt_set(opts, "telnet", "on", &error_abort);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003438 return opts;
3439 }
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003440 if (strstart(filename, "udp:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003441 qemu_opt_set(opts, "backend", "udp", &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003442 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3443 host[0] = 0;
Jan Kiszka39324ca2010-03-07 11:28:48 +01003444 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003445 goto fail;
3446 }
3447 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003448 qemu_opt_set(opts, "host", host, &error_abort);
3449 qemu_opt_set(opts, "port", port, &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003450 if (p[pos] == '@') {
3451 p += pos + 1;
3452 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3453 host[0] = 0;
3454 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003455 goto fail;
3456 }
3457 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003458 qemu_opt_set(opts, "localaddr", host, &error_abort);
3459 qemu_opt_set(opts, "localport", port, &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003460 }
3461 return opts;
3462 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003463 if (strstart(filename, "unix:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003464 qemu_opt_set(opts, "backend", "socket", &error_abort);
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003465 qemu_opts_do_parse(opts, p, "path", &local_err);
3466 if (local_err) {
3467 error_report_err(local_err);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003468 goto fail;
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003469 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003470 return opts;
3471 }
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003472 if (strstart(filename, "/dev/parport", NULL) ||
3473 strstart(filename, "/dev/ppi", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003474 qemu_opt_set(opts, "backend", "parport", &error_abort);
3475 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003476 return opts;
3477 }
3478 if (strstart(filename, "/dev/", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003479 qemu_opt_set(opts, "backend", "tty", &error_abort);
3480 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003481 return opts;
3482 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003483
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003484fail:
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003485 qemu_opts_del(opts);
3486 return NULL;
3487}
3488
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003489static void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
3490{
3491 const char *logfile = qemu_opt_get(opts, "logfile");
3492
3493 backend->has_logfile = logfile != NULL;
3494 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3495
3496 backend->has_logappend = true;
3497 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3498}
3499
3500
Gerd Hoffmann846e2e42013-02-21 12:07:14 +01003501static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3502 Error **errp)
3503{
3504 const char *path = qemu_opt_get(opts, "path");
3505
3506 if (path == NULL) {
3507 error_setg(errp, "chardev: file: no filename given");
3508 return;
3509 }
Eric Blake130257d2015-10-26 16:34:57 -06003510 backend->u.file = g_new0(ChardevFile, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003511 qemu_chr_parse_common(opts, qapi_ChardevFile_base(backend->u.file));
Eric Blake130257d2015-10-26 16:34:57 -06003512 backend->u.file->out = g_strdup(path);
Olga Krishtal31e38a22015-12-04 09:42:04 +03003513
3514 backend->u.file->has_append = true;
3515 backend->u.file->append = qemu_opt_get_bool(opts, "append", false);
Gerd Hoffmann846e2e42013-02-21 12:07:14 +01003516}
3517
Gerd Hoffmann7c358032013-02-21 12:34:58 +01003518static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3519 Error **errp)
3520{
Eric Blake130257d2015-10-26 16:34:57 -06003521 backend->u.stdio = g_new0(ChardevStdio, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003522 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(backend->u.stdio));
Eric Blake130257d2015-10-26 16:34:57 -06003523 backend->u.stdio->has_signal = true;
3524 backend->u.stdio->signal = qemu_opt_get_bool(opts, "signal", true);
Gerd Hoffmann7c358032013-02-21 12:34:58 +01003525}
3526
Paolo Bonzini6511d392015-09-29 15:08:05 +02003527#ifdef HAVE_CHARDEV_SERIAL
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003528static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3529 Error **errp)
3530{
3531 const char *device = qemu_opt_get(opts, "path");
3532
3533 if (device == NULL) {
3534 error_setg(errp, "chardev: serial/tty: no device path given");
3535 return;
3536 }
Eric Blake130257d2015-10-26 16:34:57 -06003537 backend->u.serial = g_new0(ChardevHostdev, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003538 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.serial));
Eric Blake130257d2015-10-26 16:34:57 -06003539 backend->u.serial->device = g_strdup(device);
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003540}
Paolo Bonzini6511d392015-09-29 15:08:05 +02003541#endif
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003542
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02003543#ifdef HAVE_CHARDEV_PARPORT
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003544static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3545 Error **errp)
3546{
3547 const char *device = qemu_opt_get(opts, "path");
3548
3549 if (device == NULL) {
3550 error_setg(errp, "chardev: parallel: no device path given");
3551 return;
3552 }
Eric Blake130257d2015-10-26 16:34:57 -06003553 backend->u.parallel = g_new0(ChardevHostdev, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003554 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.parallel));
Eric Blake130257d2015-10-26 16:34:57 -06003555 backend->u.parallel->device = g_strdup(device);
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003556}
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02003557#endif
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003558
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01003559static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3560 Error **errp)
3561{
3562 const char *device = qemu_opt_get(opts, "path");
3563
3564 if (device == NULL) {
3565 error_setg(errp, "chardev: pipe: no device path given");
3566 return;
3567 }
Eric Blake130257d2015-10-26 16:34:57 -06003568 backend->u.pipe = g_new0(ChardevHostdev, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003569 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.pipe));
Eric Blake130257d2015-10-26 16:34:57 -06003570 backend->u.pipe->device = g_strdup(device);
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01003571}
3572
Markus Armbruster4f573782013-07-26 16:44:32 +02003573static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3574 Error **errp)
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003575{
3576 int val;
3577
Eric Blake130257d2015-10-26 16:34:57 -06003578 backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003579 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(backend->u.ringbuf));
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003580
Markus Armbruster0f953052013-06-27 16:22:07 +02003581 val = qemu_opt_get_size(opts, "size", 0);
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003582 if (val != 0) {
Eric Blake130257d2015-10-26 16:34:57 -06003583 backend->u.ringbuf->has_size = true;
3584 backend->u.ringbuf->size = val;
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003585 }
3586}
3587
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02003588static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3589 Error **errp)
3590{
3591 const char *chardev = qemu_opt_get(opts, "chardev");
3592
3593 if (chardev == NULL) {
3594 error_setg(errp, "chardev: mux: no chardev given");
3595 return;
3596 }
Eric Blake130257d2015-10-26 16:34:57 -06003597 backend->u.mux = g_new0(ChardevMux, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003598 qemu_chr_parse_common(opts, qapi_ChardevMux_base(backend->u.mux));
Eric Blake130257d2015-10-26 16:34:57 -06003599 backend->u.mux->chardev = g_strdup(chardev);
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02003600}
3601
Peter Maydelldafd3252014-09-02 11:24:13 +01003602static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3603 Error **errp)
3604{
3605 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3606 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3607 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3608 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003609 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
Peter Maydelldafd3252014-09-02 11:24:13 +01003610 const char *path = qemu_opt_get(opts, "path");
3611 const char *host = qemu_opt_get(opts, "host");
3612 const char *port = qemu_opt_get(opts, "port");
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003613 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
Peter Maydelldafd3252014-09-02 11:24:13 +01003614 SocketAddress *addr;
3615
3616 if (!path) {
3617 if (!host) {
3618 error_setg(errp, "chardev: socket: no host given");
3619 return;
3620 }
3621 if (!port) {
3622 error_setg(errp, "chardev: socket: no port given");
3623 return;
3624 }
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003625 } else {
3626 if (tls_creds) {
3627 error_setg(errp, "TLS can only be used over TCP socket");
3628 return;
3629 }
Peter Maydelldafd3252014-09-02 11:24:13 +01003630 }
3631
Eric Blake130257d2015-10-26 16:34:57 -06003632 backend->u.socket = g_new0(ChardevSocket, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003633 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(backend->u.socket));
Peter Maydelldafd3252014-09-02 11:24:13 +01003634
Eric Blake130257d2015-10-26 16:34:57 -06003635 backend->u.socket->has_nodelay = true;
3636 backend->u.socket->nodelay = do_nodelay;
3637 backend->u.socket->has_server = true;
3638 backend->u.socket->server = is_listen;
3639 backend->u.socket->has_telnet = true;
3640 backend->u.socket->telnet = is_telnet;
3641 backend->u.socket->has_wait = true;
3642 backend->u.socket->wait = is_waitconnect;
3643 backend->u.socket->has_reconnect = true;
3644 backend->u.socket->reconnect = reconnect;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003645 backend->u.socket->tls_creds = g_strdup(tls_creds);
Peter Maydelldafd3252014-09-02 11:24:13 +01003646
3647 addr = g_new0(SocketAddress, 1);
3648 if (path) {
Eric Blake130257d2015-10-26 16:34:57 -06003649 addr->type = SOCKET_ADDRESS_KIND_UNIX;
3650 addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3651 addr->u.q_unix->path = g_strdup(path);
Peter Maydelldafd3252014-09-02 11:24:13 +01003652 } else {
Eric Blake130257d2015-10-26 16:34:57 -06003653 addr->type = SOCKET_ADDRESS_KIND_INET;
3654 addr->u.inet = g_new0(InetSocketAddress, 1);
3655 addr->u.inet->host = g_strdup(host);
3656 addr->u.inet->port = g_strdup(port);
3657 addr->u.inet->has_to = qemu_opt_get(opts, "to");
3658 addr->u.inet->to = qemu_opt_get_number(opts, "to", 0);
3659 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3660 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3661 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3662 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
Peter Maydelldafd3252014-09-02 11:24:13 +01003663 }
Eric Blake130257d2015-10-26 16:34:57 -06003664 backend->u.socket->addr = addr;
Peter Maydelldafd3252014-09-02 11:24:13 +01003665}
3666
Peter Maydell90a14bf2014-09-02 11:24:15 +01003667static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3668 Error **errp)
3669{
3670 const char *host = qemu_opt_get(opts, "host");
3671 const char *port = qemu_opt_get(opts, "port");
3672 const char *localaddr = qemu_opt_get(opts, "localaddr");
3673 const char *localport = qemu_opt_get(opts, "localport");
3674 bool has_local = false;
3675 SocketAddress *addr;
3676
3677 if (host == NULL || strlen(host) == 0) {
3678 host = "localhost";
3679 }
3680 if (port == NULL || strlen(port) == 0) {
3681 error_setg(errp, "chardev: udp: remote port not specified");
3682 return;
3683 }
3684 if (localport == NULL || strlen(localport) == 0) {
3685 localport = "0";
3686 } else {
3687 has_local = true;
3688 }
3689 if (localaddr == NULL || strlen(localaddr) == 0) {
3690 localaddr = "";
3691 } else {
3692 has_local = true;
3693 }
3694
Eric Blake130257d2015-10-26 16:34:57 -06003695 backend->u.udp = g_new0(ChardevUdp, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003696 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(backend->u.udp));
Peter Maydell90a14bf2014-09-02 11:24:15 +01003697
3698 addr = g_new0(SocketAddress, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003699 addr->type = SOCKET_ADDRESS_KIND_INET;
3700 addr->u.inet = g_new0(InetSocketAddress, 1);
3701 addr->u.inet->host = g_strdup(host);
3702 addr->u.inet->port = g_strdup(port);
3703 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3704 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3705 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3706 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3707 backend->u.udp->remote = addr;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003708
3709 if (has_local) {
Eric Blake130257d2015-10-26 16:34:57 -06003710 backend->u.udp->has_local = true;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003711 addr = g_new0(SocketAddress, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003712 addr->type = SOCKET_ADDRESS_KIND_INET;
3713 addr->u.inet = g_new0(InetSocketAddress, 1);
3714 addr->u.inet->host = g_strdup(localaddr);
3715 addr->u.inet->port = g_strdup(localport);
3716 backend->u.udp->local = addr;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003717 }
3718}
3719
Anthony Liguorid654f342013-03-05 23:21:28 +05303720typedef struct CharDriver {
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003721 const char *name;
Gerd Hoffmann99aec012013-06-24 08:39:52 +02003722 ChardevBackendKind kind;
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003723 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003724 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3725 ChardevReturn *ret, Error **errp);
Anthony Liguorid654f342013-03-05 23:21:28 +05303726} CharDriver;
3727
3728static GSList *backends;
3729
Peter Maydelle4d50d42014-09-02 11:24:17 +01003730void register_char_driver(const char *name, ChardevBackendKind kind,
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003731 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3732 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3733 ChardevReturn *ret, Error **errp))
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003734{
3735 CharDriver *s;
3736
3737 s = g_malloc0(sizeof(*s));
3738 s->name = g_strdup(name);
3739 s->kind = kind;
3740 s->parse = parse;
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003741 s->create = create;
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003742
3743 backends = g_slist_append(backends, s);
3744}
3745
Anthony Liguorif69554b2011-08-15 11:17:37 -05003746CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003747 void (*init)(struct CharDriverState *s),
3748 Error **errp)
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003749{
Markus Armbruster0aff6372014-05-19 18:57:35 +02003750 Error *local_err = NULL;
Anthony Liguorid654f342013-03-05 23:21:28 +05303751 CharDriver *cd;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003752 CharDriverState *chr;
Anthony Liguorid654f342013-03-05 23:21:28 +05303753 GSList *i;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003754 ChardevReturn *ret = NULL;
3755 ChardevBackend *backend;
3756 const char *id = qemu_opts_id(opts);
3757 char *bid = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003758
Peter Maydella61ae7f2014-09-02 11:24:16 +01003759 if (id == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003760 error_setg(errp, "chardev: no id specified");
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003761 goto err;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003762 }
3763
Stefan Hajnoczi1bbd1852011-01-22 13:07:26 +00003764 if (qemu_opt_get(opts, "backend") == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003765 error_setg(errp, "chardev: \"%s\" missing backend",
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003766 qemu_opts_id(opts));
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003767 goto err;
Stefan Hajnoczi1bbd1852011-01-22 13:07:26 +00003768 }
Anthony Liguorid654f342013-03-05 23:21:28 +05303769 for (i = backends; i; i = i->next) {
3770 cd = i->data;
3771
3772 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003773 break;
Anthony Liguorid654f342013-03-05 23:21:28 +05303774 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003775 }
Anthony Liguorid654f342013-03-05 23:21:28 +05303776 if (i == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003777 error_setg(errp, "chardev: backend \"%s\" not found",
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003778 qemu_opt_get(opts, "backend"));
Gerd Hoffmanne6682872013-06-24 08:39:51 +02003779 goto err;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003780 }
3781
Peter Maydella61ae7f2014-09-02 11:24:16 +01003782 backend = g_new0(ChardevBackend, 1);
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003783
3784 if (qemu_opt_get_bool(opts, "mux", 0)) {
Peter Maydella61ae7f2014-09-02 11:24:16 +01003785 bid = g_strdup_printf("%s-base", id);
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003786 }
Peter Maydella61ae7f2014-09-02 11:24:16 +01003787
3788 chr = NULL;
Eric Blake130257d2015-10-26 16:34:57 -06003789 backend->type = cd->kind;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003790 if (cd->parse) {
3791 cd->parse(opts, backend, &local_err);
3792 if (local_err) {
3793 error_propagate(errp, local_err);
3794 goto qapi_out;
3795 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003796 } else {
3797 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3798 qemu_chr_parse_common(opts, cc);
3799 backend->u.data = cc;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003800 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003801
Peter Maydella61ae7f2014-09-02 11:24:16 +01003802 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3803 if (!ret) {
3804 goto qapi_out;
3805 }
3806
3807 if (bid) {
3808 qapi_free_ChardevBackend(backend);
3809 qapi_free_ChardevReturn(ret);
3810 backend = g_new0(ChardevBackend, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003811 backend->u.mux = g_new0(ChardevMux, 1);
3812 backend->type = CHARDEV_BACKEND_KIND_MUX;
3813 backend->u.mux->chardev = g_strdup(bid);
Peter Maydella61ae7f2014-09-02 11:24:16 +01003814 ret = qmp_chardev_add(id, backend, errp);
3815 if (!ret) {
3816 chr = qemu_chr_find(bid);
3817 qemu_chr_delete(chr);
3818 chr = NULL;
3819 goto qapi_out;
3820 }
3821 }
3822
3823 chr = qemu_chr_find(id);
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003824 chr->opts = opts;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003825
3826qapi_out:
3827 qapi_free_ChardevBackend(backend);
3828 qapi_free_ChardevReturn(ret);
3829 g_free(bid);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003830 return chr;
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003831
3832err:
3833 qemu_opts_del(opts);
3834 return NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003835}
3836
Anthony Liguori27143a42011-08-15 11:17:36 -05003837CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
aliguori6f97dba2008-10-31 18:49:55 +00003838{
3839 const char *p;
3840 CharDriverState *chr;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003841 QemuOpts *opts;
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003842 Error *err = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003843
Gerd Hoffmannc845f402009-09-10 10:58:52 +02003844 if (strstart(filename, "chardev:", &p)) {
3845 return qemu_chr_find(p);
3846 }
3847
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003848 opts = qemu_chr_parse_compat(label, filename);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003849 if (!opts)
3850 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00003851
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003852 chr = qemu_chr_new_from_opts(opts, init, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003853 if (err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +01003854 error_report_err(err);
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003855 }
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003856 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
Hans de Goede456d6062013-03-27 20:29:40 +01003857 qemu_chr_fe_claim_no_fail(chr);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003858 monitor_init(chr, MONITOR_USE_READLINE);
aliguori6f97dba2008-10-31 18:49:55 +00003859 }
3860 return chr;
3861}
3862
Anthony Liguori15f31512011-08-15 11:17:35 -05003863void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
Paolo Bonzinic48855e2010-12-23 13:42:48 +01003864{
3865 if (chr->chr_set_echo) {
3866 chr->chr_set_echo(chr, echo);
3867 }
3868}
3869
Hans de Goede8e25daa2013-03-26 11:07:57 +01003870void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
Hans de Goede7c32c4f2011-03-24 11:12:02 +01003871{
Hans de Goede8e25daa2013-03-26 11:07:57 +01003872 if (chr->fe_open == fe_open) {
Hans de Goedec0c4bd22013-03-26 11:07:55 +01003873 return;
3874 }
Hans de Goede8e25daa2013-03-26 11:07:57 +01003875 chr->fe_open = fe_open;
Hans de Goede574b7112013-03-26 11:07:58 +01003876 if (chr->chr_set_fe_open) {
3877 chr->chr_set_fe_open(chr, fe_open);
Hans de Goede7c32c4f2011-03-24 11:12:02 +01003878 }
3879}
3880
Marc-André Lureaud61b0c92013-12-01 22:23:39 +01003881void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3882{
3883 if (chr->chr_fe_event) {
3884 chr->chr_fe_event(chr, event);
3885 }
3886}
3887
Kevin Wolf2c8a5942013-03-19 13:38:09 +01003888int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3889 GIOFunc func, void *user_data)
Anthony Liguori23673ca2013-03-05 23:21:23 +05303890{
3891 GSource *src;
3892 guint tag;
3893
3894 if (s->chr_add_watch == NULL) {
3895 return -ENOSYS;
3896 }
3897
3898 src = s->chr_add_watch(s, cond);
Paolo Bonzini62c339c2014-07-24 16:08:04 +02003899 if (!src) {
3900 return -EINVAL;
3901 }
3902
Anthony Liguori23673ca2013-03-05 23:21:23 +05303903 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3904 tag = g_source_attach(src, NULL);
3905 g_source_unref(src);
3906
3907 return tag;
3908}
3909
Hans de Goede44c473d2013-03-27 20:29:39 +01003910int qemu_chr_fe_claim(CharDriverState *s)
3911{
3912 if (s->avail_connections < 1) {
3913 return -1;
3914 }
3915 s->avail_connections--;
3916 return 0;
3917}
3918
3919void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3920{
3921 if (qemu_chr_fe_claim(s) != 0) {
3922 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3923 __func__, s->label);
3924 exit(1);
3925 }
3926}
3927
3928void qemu_chr_fe_release(CharDriverState *s)
3929{
3930 s->avail_connections++;
3931}
3932
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003933static void qemu_chr_free_common(CharDriverState *chr)
3934{
3935 g_free(chr->filename);
3936 g_free(chr->label);
3937 qemu_opts_del(chr->opts);
3938 if (chr->logfd != -1) {
3939 close(chr->logfd);
3940 }
Paolo Bonzinifefd7492016-01-15 16:16:25 +01003941 qemu_mutex_destroy(&chr->chr_write_lock);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003942 g_free(chr);
3943}
3944
Marc-André Lureau1ad78ea2015-06-22 18:20:18 +02003945void qemu_chr_free(CharDriverState *chr)
aliguori6f97dba2008-10-31 18:49:55 +00003946{
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003947 if (chr->chr_close) {
aliguori6f97dba2008-10-31 18:49:55 +00003948 chr->chr_close(chr);
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003949 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003950 qemu_chr_free_common(chr);
aliguori6f97dba2008-10-31 18:49:55 +00003951}
3952
Marc-André Lureau1ad78ea2015-06-22 18:20:18 +02003953void qemu_chr_delete(CharDriverState *chr)
3954{
3955 QTAILQ_REMOVE(&chardevs, chr, next);
3956 qemu_chr_free(chr);
3957}
3958
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03003959ChardevInfoList *qmp_query_chardev(Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00003960{
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03003961 ChardevInfoList *chr_list = NULL;
aliguori6f97dba2008-10-31 18:49:55 +00003962 CharDriverState *chr;
3963
Blue Swirl72cf2d42009-09-12 07:36:22 +00003964 QTAILQ_FOREACH(chr, &chardevs, next) {
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03003965 ChardevInfoList *info = g_malloc0(sizeof(*info));
3966 info->value = g_malloc0(sizeof(*info->value));
3967 info->value->label = g_strdup(chr->label);
3968 info->value->filename = g_strdup(chr->filename);
Laszlo Ersek32a97ea2014-06-26 17:50:03 +02003969 info->value->frontend_open = chr->fe_open;
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03003970
3971 info->next = chr_list;
3972 chr_list = info;
aliguori6f97dba2008-10-31 18:49:55 +00003973 }
Luiz Capitulino588b3832009-12-10 17:16:08 -02003974
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03003975 return chr_list;
aliguori6f97dba2008-10-31 18:49:55 +00003976}
Gerd Hoffmannc845f402009-09-10 10:58:52 +02003977
Martin Kletzander77d1c3c2014-02-01 12:52:42 +01003978ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3979{
3980 ChardevBackendInfoList *backend_list = NULL;
3981 CharDriver *c = NULL;
3982 GSList *i = NULL;
3983
3984 for (i = backends; i; i = i->next) {
3985 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3986 c = i->data;
3987 info->value = g_malloc0(sizeof(*info->value));
3988 info->value->name = g_strdup(c->name);
3989
3990 info->next = backend_list;
3991 backend_list = info;
3992 }
3993
3994 return backend_list;
3995}
3996
Gerd Hoffmannc845f402009-09-10 10:58:52 +02003997CharDriverState *qemu_chr_find(const char *name)
3998{
3999 CharDriverState *chr;
4000
Blue Swirl72cf2d42009-09-12 07:36:22 +00004001 QTAILQ_FOREACH(chr, &chardevs, next) {
Gerd Hoffmannc845f402009-09-10 10:58:52 +02004002 if (strcmp(chr->label, name) != 0)
4003 continue;
4004 return chr;
4005 }
4006 return NULL;
4007}
Anthony Liguori0beb4942011-12-22 15:29:25 -06004008
4009/* Get a character (serial) device interface. */
4010CharDriverState *qemu_char_get_next_serial(void)
4011{
4012 static int next_serial;
Hans de Goede456d6062013-03-27 20:29:40 +01004013 CharDriverState *chr;
Anthony Liguori0beb4942011-12-22 15:29:25 -06004014
4015 /* FIXME: This function needs to go away: use chardev properties! */
Hans de Goede456d6062013-03-27 20:29:40 +01004016
4017 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4018 chr = serial_hds[next_serial++];
4019 qemu_chr_fe_claim_no_fail(chr);
4020 return chr;
4021 }
4022 return NULL;
Anthony Liguori0beb4942011-12-22 15:29:25 -06004023}
4024
Paolo Bonzini4d454572012-11-26 16:03:42 +01004025QemuOptsList qemu_chardev_opts = {
4026 .name = "chardev",
4027 .implied_opt_name = "backend",
4028 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4029 .desc = {
4030 {
4031 .name = "backend",
4032 .type = QEMU_OPT_STRING,
4033 },{
4034 .name = "path",
4035 .type = QEMU_OPT_STRING,
4036 },{
4037 .name = "host",
4038 .type = QEMU_OPT_STRING,
4039 },{
4040 .name = "port",
4041 .type = QEMU_OPT_STRING,
4042 },{
4043 .name = "localaddr",
4044 .type = QEMU_OPT_STRING,
4045 },{
4046 .name = "localport",
4047 .type = QEMU_OPT_STRING,
4048 },{
4049 .name = "to",
4050 .type = QEMU_OPT_NUMBER,
4051 },{
4052 .name = "ipv4",
4053 .type = QEMU_OPT_BOOL,
4054 },{
4055 .name = "ipv6",
4056 .type = QEMU_OPT_BOOL,
4057 },{
4058 .name = "wait",
4059 .type = QEMU_OPT_BOOL,
4060 },{
4061 .name = "server",
4062 .type = QEMU_OPT_BOOL,
4063 },{
4064 .name = "delay",
4065 .type = QEMU_OPT_BOOL,
4066 },{
Corey Minyard5dd1f022014-10-02 11:17:37 -05004067 .name = "reconnect",
4068 .type = QEMU_OPT_NUMBER,
4069 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004070 .name = "telnet",
4071 .type = QEMU_OPT_BOOL,
4072 },{
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004073 .name = "tls-creds",
4074 .type = QEMU_OPT_STRING,
4075 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004076 .name = "width",
4077 .type = QEMU_OPT_NUMBER,
4078 },{
4079 .name = "height",
4080 .type = QEMU_OPT_NUMBER,
4081 },{
4082 .name = "cols",
4083 .type = QEMU_OPT_NUMBER,
4084 },{
4085 .name = "rows",
4086 .type = QEMU_OPT_NUMBER,
4087 },{
4088 .name = "mux",
4089 .type = QEMU_OPT_BOOL,
4090 },{
4091 .name = "signal",
4092 .type = QEMU_OPT_BOOL,
4093 },{
4094 .name = "name",
4095 .type = QEMU_OPT_STRING,
4096 },{
4097 .name = "debug",
4098 .type = QEMU_OPT_NUMBER,
Lei Li51767e72013-01-25 00:03:19 +08004099 },{
Markus Armbruster3949e592013-02-06 21:27:24 +01004100 .name = "size",
Markus Armbrusterde1cc362013-02-06 21:27:25 +01004101 .type = QEMU_OPT_SIZE,
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02004102 },{
4103 .name = "chardev",
4104 .type = QEMU_OPT_STRING,
Olga Krishtal31e38a22015-12-04 09:42:04 +03004105 },{
4106 .name = "append",
4107 .type = QEMU_OPT_BOOL,
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004108 },{
4109 .name = "logfile",
4110 .type = QEMU_OPT_STRING,
4111 },{
4112 .name = "logappend",
4113 .type = QEMU_OPT_BOOL,
Paolo Bonzini4d454572012-11-26 16:03:42 +01004114 },
4115 { /* end of list */ }
4116 },
4117};
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004118
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004119#ifdef _WIN32
4120
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004121static CharDriverState *qmp_chardev_open_file(const char *id,
4122 ChardevBackend *backend,
4123 ChardevReturn *ret,
4124 Error **errp)
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004125{
Eric Blake130257d2015-10-26 16:34:57 -06004126 ChardevFile *file = backend->u.file;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004127 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004128 HANDLE out;
4129
Gerd Hoffmanne859eda2013-06-24 08:39:47 +02004130 if (file->has_in) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004131 error_setg(errp, "input file not supported");
4132 return NULL;
4133 }
4134
4135 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4136 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4137 if (out == INVALID_HANDLE_VALUE) {
4138 error_setg(errp, "open %s failed", file->out);
4139 return NULL;
4140 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004141 return qemu_chr_open_win_file(out, common, errp);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004142}
4143
Paolo Bonzini6511d392015-09-29 15:08:05 +02004144static CharDriverState *qmp_chardev_open_serial(const char *id,
4145 ChardevBackend *backend,
4146 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004147 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004148{
Eric Blake130257d2015-10-26 16:34:57 -06004149 ChardevHostdev *serial = backend->u.serial;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004150 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
4151 return qemu_chr_open_win_path(serial->device, common, errp);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004152}
4153
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004154#else /* WIN32 */
4155
4156static int qmp_chardev_open_file_source(char *src, int flags,
4157 Error **errp)
4158{
4159 int fd = -1;
4160
4161 TFR(fd = qemu_open(src, flags, 0666));
4162 if (fd == -1) {
Gerd Hoffmann20c39762013-06-24 08:39:48 +02004163 error_setg_file_open(errp, errno, src);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004164 }
4165 return fd;
4166}
4167
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004168static CharDriverState *qmp_chardev_open_file(const char *id,
4169 ChardevBackend *backend,
4170 ChardevReturn *ret,
4171 Error **errp)
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004172{
Eric Blake130257d2015-10-26 16:34:57 -06004173 ChardevFile *file = backend->u.file;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004174 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
Markus Armbruster5f758362014-05-19 18:57:34 +02004175 int flags, in = -1, out;
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004176
Olga Krishtal31e38a22015-12-04 09:42:04 +03004177 flags = O_WRONLY | O_CREAT | O_BINARY;
4178 if (file->has_append && file->append) {
4179 flags |= O_APPEND;
4180 } else {
4181 flags |= O_TRUNC;
4182 }
4183
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004184 out = qmp_chardev_open_file_source(file->out, flags, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004185 if (out < 0) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004186 return NULL;
4187 }
4188
Gerd Hoffmanne859eda2013-06-24 08:39:47 +02004189 if (file->has_in) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004190 flags = O_RDONLY;
4191 in = qmp_chardev_open_file_source(file->in, flags, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004192 if (in < 0) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004193 qemu_close(out);
4194 return NULL;
4195 }
4196 }
4197
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004198 return qemu_chr_open_fd(in, out, common, errp);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004199}
4200
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004201#ifdef HAVE_CHARDEV_SERIAL
Paolo Bonzini6511d392015-09-29 15:08:05 +02004202static CharDriverState *qmp_chardev_open_serial(const char *id,
4203 ChardevBackend *backend,
4204 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004205 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004206{
Eric Blake130257d2015-10-26 16:34:57 -06004207 ChardevHostdev *serial = backend->u.serial;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004208 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004209 int fd;
4210
4211 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004212 if (fd < 0) {
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004213 return NULL;
4214 }
Stefan Hajnoczif9e8cac2013-03-27 10:10:43 +01004215 qemu_set_nonblock(fd);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004216 return qemu_chr_open_tty_fd(fd, common, errp);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004217}
Paolo Bonzini6511d392015-09-29 15:08:05 +02004218#endif
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004219
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004220#ifdef HAVE_CHARDEV_PARPORT
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004221static CharDriverState *qmp_chardev_open_parallel(const char *id,
4222 ChardevBackend *backend,
4223 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004224 Error **errp)
4225{
Eric Blake130257d2015-10-26 16:34:57 -06004226 ChardevHostdev *parallel = backend->u.parallel;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004227 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.parallel);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004228 int fd;
4229
4230 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004231 if (fd < 0) {
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004232 return NULL;
4233 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004234 return qemu_chr_open_pp_fd(fd, common, errp);
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004235}
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004236#endif
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004237
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004238#endif /* WIN32 */
4239
Corey Minyard5008e5b2014-10-08 07:11:55 -05004240static void socket_try_connect(CharDriverState *chr)
4241{
4242 Error *err = NULL;
4243
4244 if (!qemu_chr_open_socket_fd(chr, &err)) {
4245 check_report_connect_error(chr, err);
4246 }
4247}
4248
Corey Minyard5dd1f022014-10-02 11:17:37 -05004249static gboolean socket_reconnect_timeout(gpointer opaque)
4250{
4251 CharDriverState *chr = opaque;
4252 TCPCharDriver *s = chr->opaque;
Corey Minyard5dd1f022014-10-02 11:17:37 -05004253
4254 s->reconnect_timer = 0;
4255
4256 if (chr->be_open) {
4257 return false;
4258 }
4259
Corey Minyard5008e5b2014-10-08 07:11:55 -05004260 socket_try_connect(chr);
Corey Minyard5dd1f022014-10-02 11:17:37 -05004261
4262 return false;
4263}
4264
Paolo Bonzinidbba8d12015-09-29 15:15:53 +02004265static CharDriverState *qmp_chardev_open_socket(const char *id,
4266 ChardevBackend *backend,
4267 ChardevReturn *ret,
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004268 Error **errp)
4269{
Corey Minyard43ded1a2014-10-02 11:17:34 -05004270 CharDriverState *chr;
4271 TCPCharDriver *s;
Eric Blake130257d2015-10-26 16:34:57 -06004272 ChardevSocket *sock = backend->u.socket;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004273 SocketAddress *addr = sock->addr;
4274 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4275 bool is_listen = sock->has_server ? sock->server : true;
4276 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4277 bool is_waitconnect = sock->has_wait ? sock->wait : false;
Corey Minyard5dd1f022014-10-02 11:17:37 -05004278 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004279 ChardevCommon *common = qapi_ChardevSocket_base(backend->u.socket);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004280
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004281 chr = qemu_chr_alloc(common, errp);
4282 if (!chr) {
4283 return NULL;
4284 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02004285 s = g_new0(TCPCharDriver, 1);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004286
Eric Blake130257d2015-10-26 16:34:57 -06004287 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
Corey Minyardcfb429c2014-10-02 11:17:35 -05004288 s->is_listen = is_listen;
4289 s->is_telnet = is_telnet;
Corey Minyard43ded1a2014-10-02 11:17:34 -05004290 s->do_nodelay = do_nodelay;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004291 if (sock->tls_creds) {
4292 Object *creds;
4293 creds = object_resolve_path_component(
4294 object_get_objects_root(), sock->tls_creds);
4295 if (!creds) {
4296 error_setg(errp, "No TLS credentials with id '%s'",
4297 sock->tls_creds);
4298 goto error;
4299 }
4300 s->tls_creds = (QCryptoTLSCreds *)
4301 object_dynamic_cast(creds,
4302 TYPE_QCRYPTO_TLS_CREDS);
4303 if (!s->tls_creds) {
4304 error_setg(errp, "Object with id '%s' is not TLS credentials",
4305 sock->tls_creds);
4306 goto error;
4307 }
4308 object_ref(OBJECT(s->tls_creds));
4309 if (is_listen) {
4310 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4311 error_setg(errp, "%s",
4312 "Expected TLS credentials for server endpoint");
4313 goto error;
4314 }
4315 } else {
4316 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4317 error_setg(errp, "%s",
4318 "Expected TLS credentials for client endpoint");
4319 goto error;
4320 }
4321 }
4322 }
4323
Corey Minyardcfb429c2014-10-02 11:17:35 -05004324 qapi_copy_SocketAddress(&s->addr, sock->addr);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004325
4326 chr->opaque = s;
4327 chr->chr_write = tcp_chr_write;
4328 chr->chr_sync_read = tcp_chr_sync_read;
4329 chr->chr_close = tcp_chr_close;
4330 chr->get_msgfds = tcp_get_msgfds;
4331 chr->set_msgfds = tcp_set_msgfds;
4332 chr->chr_add_client = tcp_chr_add_client;
4333 chr->chr_add_watch = tcp_chr_add_watch;
4334 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4335 /* be isn't opened until we get a connection */
4336 chr->explicit_be_open = true;
4337
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00004338 chr->filename = SocketAddress_to_str("disconnected:",
4339 addr, is_listen, is_telnet);
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004340
4341 if (is_listen) {
Corey Minyard43ded1a2014-10-02 11:17:34 -05004342 if (is_telnet) {
4343 s->do_telnetopt = 1;
4344 }
Corey Minyard5dd1f022014-10-02 11:17:37 -05004345 } else if (reconnect > 0) {
4346 s->reconnect_time = reconnect;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004347 }
Corey Minyard43ded1a2014-10-02 11:17:34 -05004348
Corey Minyard5008e5b2014-10-08 07:11:55 -05004349 if (s->reconnect_time) {
4350 socket_try_connect(chr);
4351 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004352 goto error;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004353 }
Corey Minyard43ded1a2014-10-02 11:17:34 -05004354
4355 if (is_listen && is_waitconnect) {
4356 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4357 chr->filename);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004358 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4359 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004360 }
4361
4362 return chr;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004363
4364 error:
4365 if (s->tls_creds) {
4366 object_unref(OBJECT(s->tls_creds));
4367 }
4368 g_free(s);
4369 qemu_chr_free_common(chr);
4370 return NULL;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004371}
4372
Paolo Bonzinie79b80d2015-09-29 15:17:20 +02004373static CharDriverState *qmp_chardev_open_udp(const char *id,
4374 ChardevBackend *backend,
4375 ChardevReturn *ret,
Lei Li08d0ab32013-05-20 14:51:03 +08004376 Error **errp)
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004377{
Eric Blake130257d2015-10-26 16:34:57 -06004378 ChardevUdp *udp = backend->u.udp;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004379 ChardevCommon *common = qapi_ChardevUdp_base(backend->u.udp);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004380 QIOChannelSocket *sioc = qio_channel_socket_new();
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004381
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004382 if (qio_channel_socket_dgram_sync(sioc,
4383 udp->remote, udp->local,
4384 errp) < 0) {
4385 object_unref(OBJECT(sioc));
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004386 return NULL;
4387 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004388 return qemu_chr_open_udp(sioc, common, errp);
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004389}
4390
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004391ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4392 Error **errp)
4393{
4394 ChardevReturn *ret = g_new0(ChardevReturn, 1);
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +02004395 CharDriverState *chr = NULL;
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004396 Error *local_err = NULL;
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004397 GSList *i;
4398 CharDriver *cd;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004399
4400 chr = qemu_chr_find(id);
4401 if (chr) {
4402 error_setg(errp, "Chardev '%s' already exists", id);
4403 g_free(ret);
4404 return NULL;
4405 }
4406
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004407 for (i = backends; i; i = i->next) {
4408 cd = i->data;
4409
Eric Blake130257d2015-10-26 16:34:57 -06004410 if (cd->kind == backend->type) {
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004411 chr = cd->create(id, backend, ret, &local_err);
4412 if (local_err) {
4413 error_propagate(errp, local_err);
4414 goto out_error;
4415 }
Gerd Hoffmannedb2fb32013-02-21 16:16:42 +01004416 break;
4417 }
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004418 }
4419
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004420 if (chr == NULL) {
Paolo Bonzini1c3af0f2015-10-12 09:51:41 +02004421 assert(!i);
4422 error_setg(errp, "chardev backend not available");
4423 goto out_error;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004424 }
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004425
4426 chr->label = g_strdup(id);
4427 chr->avail_connections =
Eric Blake130257d2015-10-26 16:34:57 -06004428 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004429 if (!chr->filename) {
Eric Blake130257d2015-10-26 16:34:57 -06004430 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004431 }
4432 if (!chr->explicit_be_open) {
4433 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4434 }
4435 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4436 return ret;
4437
4438out_error:
4439 g_free(ret);
4440 return NULL;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004441}
4442
4443void qmp_chardev_remove(const char *id, Error **errp)
4444{
4445 CharDriverState *chr;
4446
4447 chr = qemu_chr_find(id);
Gonglei8108fd32014-08-11 21:00:55 +08004448 if (chr == NULL) {
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004449 error_setg(errp, "Chardev '%s' not found", id);
4450 return;
4451 }
4452 if (chr->chr_can_read || chr->chr_read ||
4453 chr->chr_event || chr->handler_opaque) {
4454 error_setg(errp, "Chardev '%s' is busy", id);
4455 return;
4456 }
4457 qemu_chr_delete(chr);
4458}
Anthony Liguorid654f342013-03-05 23:21:28 +05304459
4460static void register_types(void)
4461{
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004462 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
Paolo Bonzini0d649922015-09-29 15:24:29 +02004463 qemu_chr_open_null);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004464 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
Paolo Bonzinidbba8d12015-09-29 15:15:53 +02004465 qemu_chr_parse_socket, qmp_chardev_open_socket);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004466 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
Paolo Bonzinie79b80d2015-09-29 15:17:20 +02004467 qmp_chardev_open_udp);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004468 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
Paolo Bonzini479f09a2015-09-29 15:51:14 +02004469 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004470 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004471 qemu_chr_parse_file_out, qmp_chardev_open_file);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004472 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
Paolo Bonzini8c84b252015-09-29 15:40:28 +02004473 qemu_chr_parse_stdio, qemu_chr_open_stdio);
Paolo Bonzini6511d392015-09-29 15:08:05 +02004474#if defined HAVE_CHARDEV_SERIAL
Peter Maydelle4d50d42014-09-02 11:24:17 +01004475 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
Paolo Bonzini6511d392015-09-29 15:08:05 +02004476 qemu_chr_parse_serial, qmp_chardev_open_serial);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004477 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
Paolo Bonzini6511d392015-09-29 15:08:05 +02004478 qemu_chr_parse_serial, qmp_chardev_open_serial);
4479#endif
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004480#ifdef HAVE_CHARDEV_PARPORT
Peter Maydelle4d50d42014-09-02 11:24:17 +01004481 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004482 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004483 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004484 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4485#endif
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02004486#ifdef HAVE_CHARDEV_PTY
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004487 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02004488 qemu_chr_open_pty);
4489#endif
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02004490#ifdef _WIN32
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004491 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02004492 qemu_chr_open_win_con);
4493#endif
Peter Maydelle4d50d42014-09-02 11:24:17 +01004494 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02004495 qemu_chr_parse_pipe, qemu_chr_open_pipe);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004496 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +02004497 qemu_chr_open_mux);
Markus Armbrusterc11ed962013-07-26 16:44:33 +02004498 /* Bug-compatibility: */
Peter Maydelle4d50d42014-09-02 11:24:17 +01004499 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
Paolo Bonzini479f09a2015-09-29 15:51:14 +02004500 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
Michael Roth7b7ab182013-07-30 13:04:22 -05004501 /* this must be done after machine init, since we register FEs with muxes
4502 * as part of realize functions like serial_isa_realizefn when -nographic
4503 * is specified
4504 */
4505 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
Anthony Liguorid654f342013-03-05 23:21:28 +05304506}
4507
4508type_init(register_types);