4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
24 #include "qemu-common.h"
25 #include "monitor/monitor.h"
26 #include "sysemu/sysemu.h"
27 #include "qemu/error-report.h"
28 #include "qemu/timer.h"
29 #include "sysemu/char.h"
31 #include "qmp-commands.h"
32 #include "qapi/qmp-input-visitor.h"
33 #include "qapi/qmp-output-visitor.h"
34 #include "qapi-visit.h"
44 #include <sys/times.h>
48 #include <sys/ioctl.h>
49 #include <sys/resource.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h>
53 #include <arpa/inet.h>
55 #include <sys/select.h>
58 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
59 #include <dev/ppbus/ppi.h>
60 #include <dev/ppbus/ppbconf.h>
61 #elif defined(__DragonFly__)
62 #include <dev/misc/ppi/ppi.h>
63 #include <bus/ppbus/ppbconf.h>
67 #include <linux/ppdev.h>
68 #include <linux/parport.h>
72 #include <sys/ethernet.h>
73 #include <sys/sockio.h>
74 #include <netinet/arp.h>
75 #include <netinet/in.h>
76 #include <netinet/in_systm.h>
77 #include <netinet/ip.h>
78 #include <netinet/ip_icmp.h> // must come after ip.h
79 #include <netinet/udp.h>
80 #include <netinet/tcp.h>
85 #include "qemu/sockets.h"
86 #include "ui/qemu-spice.h"
88 #define READ_BUF_LEN 4096
89 #define READ_RETRIES 10
90 #define CHR_MAX_FILENAME_SIZE 256
91 #define TCP_MAX_FDS 16
93 /***********************************************************/
94 /* Socket address helpers */
95 static void qapi_copy_SocketAddress(SocketAddress **p_dest,
98 QmpOutputVisitor *qov;
105 qov = qmp_output_visitor_new();
106 ov = qmp_output_get_visitor(qov);
107 visit_type_SocketAddress(ov, &src, NULL, &error_abort);
108 obj = qmp_output_get_qobject(qov);
109 qmp_output_visitor_cleanup(qov);
114 qiv = qmp_input_visitor_new(obj);
115 iv = qmp_input_get_visitor(qiv);
116 visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
117 qmp_input_visitor_cleanup(qiv);
121 static int SocketAddress_to_str(char *dest, int max_len,
122 const char *prefix, SocketAddress *addr,
123 bool is_listen, bool is_telnet)
125 switch (addr->kind) {
126 case SOCKET_ADDRESS_KIND_INET:
127 return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
128 is_telnet ? "telnet" : "tcp", addr->inet->host,
129 addr->inet->port, is_listen ? ",server" : "");
131 case SOCKET_ADDRESS_KIND_UNIX:
132 return snprintf(dest, max_len, "%sunix:%s%s", prefix,
133 addr->q_unix->path, is_listen ? ",server" : "");
135 case SOCKET_ADDRESS_KIND_FD:
136 return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
137 is_listen ? ",server" : "");
144 static int sockaddr_to_str(char *dest, int max_len,
145 struct sockaddr_storage *ss, socklen_t ss_len,
146 struct sockaddr_storage *ps, socklen_t ps_len,
147 bool is_listen, bool is_telnet)
149 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
150 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
151 const char *left = "", *right = "";
153 switch (ss->ss_family) {
156 return snprintf(dest, max_len, "unix:%s%s",
157 ((struct sockaddr_un *)(ss))->sun_path,
158 is_listen ? ",server" : "");
165 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
166 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
167 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
168 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
169 return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
170 is_telnet ? "telnet" : "tcp",
171 left, shost, right, sserv,
172 is_listen ? ",server" : "",
173 left, phost, right, pserv);
176 return snprintf(dest, max_len, "unknown");
180 /***********************************************************/
181 /* character device */
183 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
184 QTAILQ_HEAD_INITIALIZER(chardevs);
186 CharDriverState *qemu_chr_alloc(void)
188 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
189 qemu_mutex_init(&chr->chr_write_lock);
193 void qemu_chr_be_event(CharDriverState *s, int event)
195 /* Keep track if the char device is open */
197 case CHR_EVENT_OPENED:
200 case CHR_EVENT_CLOSED:
207 s->chr_event(s->handler_opaque, event);
210 void qemu_chr_be_generic_open(CharDriverState *s)
212 qemu_chr_be_event(s, CHR_EVENT_OPENED);
215 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
219 qemu_mutex_lock(&s->chr_write_lock);
220 ret = s->chr_write(s, buf, len);
221 qemu_mutex_unlock(&s->chr_write_lock);
225 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
230 qemu_mutex_lock(&s->chr_write_lock);
231 while (offset < len) {
233 res = s->chr_write(s, buf + offset, len - offset);
234 if (res == -1 && errno == EAGAIN) {
237 } while (res == -1 && errno == EAGAIN);
245 qemu_mutex_unlock(&s->chr_write_lock);
253 int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
255 int offset = 0, counter = 10;
258 if (!s->chr_sync_read) {
262 while (offset < len) {
264 res = s->chr_sync_read(s, buf + offset, len - offset);
265 if (res == -1 && errno == EAGAIN) {
268 } while (res == -1 && errno == EAGAIN);
288 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
292 return s->chr_ioctl(s, cmd, arg);
295 int qemu_chr_be_can_write(CharDriverState *s)
297 if (!s->chr_can_read)
299 return s->chr_can_read(s->handler_opaque);
302 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
305 s->chr_read(s->handler_opaque, buf, len);
309 int qemu_chr_fe_get_msgfd(CharDriverState *s)
312 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
315 int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
317 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
320 int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
322 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
325 int qemu_chr_add_client(CharDriverState *s, int fd)
327 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
330 void qemu_chr_accept_input(CharDriverState *s)
332 if (s->chr_accept_input)
333 s->chr_accept_input(s);
337 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
339 char buf[READ_BUF_LEN];
342 vsnprintf(buf, sizeof(buf), fmt, ap);
343 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
347 static void remove_fd_in_watch(CharDriverState *chr);
349 void qemu_chr_add_handlers(CharDriverState *s,
350 IOCanReadHandler *fd_can_read,
351 IOReadHandler *fd_read,
352 IOEventHandler *fd_event,
357 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
359 remove_fd_in_watch(s);
363 s->chr_can_read = fd_can_read;
364 s->chr_read = fd_read;
365 s->chr_event = fd_event;
366 s->handler_opaque = opaque;
367 if (fe_open && s->chr_update_read_handler)
368 s->chr_update_read_handler(s);
370 if (!s->explicit_fe_open) {
371 qemu_chr_fe_set_open(s, fe_open);
374 /* We're connecting to an already opened device, so let's make sure we
375 also get the open event */
376 if (fe_open && s->be_open) {
377 qemu_chr_be_generic_open(s);
381 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
386 static CharDriverState *qemu_chr_open_null(void)
388 CharDriverState *chr;
390 chr = qemu_chr_alloc();
391 chr->chr_write = null_chr_write;
392 chr->explicit_be_open = true;
396 /* MUX driver for serial I/O splitting */
398 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
399 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
401 IOCanReadHandler *chr_can_read[MAX_MUX];
402 IOReadHandler *chr_read[MAX_MUX];
403 IOEventHandler *chr_event[MAX_MUX];
404 void *ext_opaque[MAX_MUX];
405 CharDriverState *drv;
410 /* Intermediate input buffer allows to catch escape sequences even if the
411 currently active device is not accepting any input - but only until it
413 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
418 /* Protected by the CharDriverState chr_write_lock. */
420 int64_t timestamps_start;
424 /* Called with chr_write_lock held. */
425 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
427 MuxDriver *d = chr->opaque;
429 if (!d->timestamps) {
430 ret = qemu_chr_fe_write(d->drv, buf, len);
435 for (i = 0; i < len; i++) {
441 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
442 if (d->timestamps_start == -1)
443 d->timestamps_start = ti;
444 ti -= d->timestamps_start;
446 snprintf(buf1, sizeof(buf1),
447 "[%02d:%02d:%02d.%03d] ",
452 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
455 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
456 if (buf[i] == '\n') {
464 static const char * const mux_help[] = {
465 "% h print this help\n\r",
466 "% x exit emulator\n\r",
467 "% s save disk data back to file (if -snapshot)\n\r",
468 "% t toggle console timestamps\n\r",
469 "% b send break (magic sysrq)\n\r",
470 "% c switch between console and monitor\n\r",
475 int term_escape_char = 0x01; /* ctrl-a is used for escape */
476 static void mux_print_help(CharDriverState *chr)
479 char ebuf[15] = "Escape-Char";
480 char cbuf[50] = "\n\r";
482 if (term_escape_char > 0 && term_escape_char < 26) {
483 snprintf(cbuf, sizeof(cbuf), "\n\r");
484 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
486 snprintf(cbuf, sizeof(cbuf),
487 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
490 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
491 for (i = 0; mux_help[i] != NULL; i++) {
492 for (j=0; mux_help[i][j] != '\0'; j++) {
493 if (mux_help[i][j] == '%')
494 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
496 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
501 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
503 if (d->chr_event[mux_nr])
504 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
507 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
509 if (d->term_got_escape) {
510 d->term_got_escape = 0;
511 if (ch == term_escape_char)
520 const char *term = "QEMU: Terminated\n\r";
521 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
529 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
532 /* Switch to the next registered device */
533 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
535 if (d->focus >= d->mux_cnt)
537 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
540 d->timestamps = !d->timestamps;
541 d->timestamps_start = -1;
545 } else if (ch == term_escape_char) {
546 d->term_got_escape = 1;
554 static void mux_chr_accept_input(CharDriverState *chr)
556 MuxDriver *d = chr->opaque;
559 while (d->prod[m] != d->cons[m] &&
560 d->chr_can_read[m] &&
561 d->chr_can_read[m](d->ext_opaque[m])) {
562 d->chr_read[m](d->ext_opaque[m],
563 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
567 static int mux_chr_can_read(void *opaque)
569 CharDriverState *chr = opaque;
570 MuxDriver *d = chr->opaque;
573 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
575 if (d->chr_can_read[m])
576 return d->chr_can_read[m](d->ext_opaque[m]);
580 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
582 CharDriverState *chr = opaque;
583 MuxDriver *d = chr->opaque;
587 mux_chr_accept_input (opaque);
589 for(i = 0; i < size; i++)
590 if (mux_proc_byte(chr, d, buf[i])) {
591 if (d->prod[m] == d->cons[m] &&
592 d->chr_can_read[m] &&
593 d->chr_can_read[m](d->ext_opaque[m]))
594 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
596 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
600 static void mux_chr_event(void *opaque, int event)
602 CharDriverState *chr = opaque;
603 MuxDriver *d = chr->opaque;
606 /* Send the event to all registered listeners */
607 for (i = 0; i < d->mux_cnt; i++)
608 mux_chr_send_event(d, i, event);
611 static void mux_chr_update_read_handler(CharDriverState *chr)
613 MuxDriver *d = chr->opaque;
615 if (d->mux_cnt >= MAX_MUX) {
616 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
619 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
620 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
621 d->chr_read[d->mux_cnt] = chr->chr_read;
622 d->chr_event[d->mux_cnt] = chr->chr_event;
623 /* Fix up the real driver with mux routines */
624 if (d->mux_cnt == 0) {
625 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
628 if (d->focus != -1) {
629 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
631 d->focus = d->mux_cnt;
633 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
636 static bool muxes_realized;
639 * Called after processing of default and command-line-specified
640 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
641 * to a mux chardev. This is done here to ensure that
642 * output/prompts/banners are only displayed for the FE that has
643 * focus when initial command-line processing/machine init is
646 * After this point, any new FE attached to any new or existing
647 * mux will receive CHR_EVENT_OPENED notifications for the BE
650 static void muxes_realize_done(Notifier *notifier, void *unused)
652 CharDriverState *chr;
654 QTAILQ_FOREACH(chr, &chardevs, next) {
656 MuxDriver *d = chr->opaque;
659 /* send OPENED to all already-attached FEs */
660 for (i = 0; i < d->mux_cnt; i++) {
661 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
663 /* mark mux as OPENED so any new FEs will immediately receive
666 qemu_chr_be_generic_open(chr);
669 muxes_realized = true;
672 static Notifier muxes_realize_notify = {
673 .notify = muxes_realize_done,
676 static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
678 MuxDriver *d = s->opaque;
679 return d->drv->chr_add_watch(d->drv, cond);
682 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
684 CharDriverState *chr;
687 chr = qemu_chr_alloc();
688 d = g_new0(MuxDriver, 1);
693 chr->chr_write = mux_chr_write;
694 chr->chr_update_read_handler = mux_chr_update_read_handler;
695 chr->chr_accept_input = mux_chr_accept_input;
696 /* Frontend guest-open / -close notification is not support with muxes */
697 chr->chr_set_fe_open = NULL;
698 if (drv->chr_add_watch) {
699 chr->chr_add_watch = mux_chr_add_watch;
701 /* only default to opened state if we've realized the initial
704 chr->explicit_be_open = muxes_realized ? 0 : 1;
712 int send_all(int fd, const void *buf, int len1)
718 ret = send(fd, buf, len, 0);
720 errno = WSAGetLastError();
721 if (errno != WSAEWOULDBLOCK) {
724 } else if (ret == 0) {
736 int send_all(int fd, const void *_buf, int len1)
739 const uint8_t *buf = _buf;
743 ret = write(fd, buf, len);
745 if (errno != EINTR && errno != EAGAIN)
747 } else if (ret == 0) {
757 int recv_all(int fd, void *_buf, int len1, bool single_read)
763 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
765 if (errno != EINTR && errno != EAGAIN) {
782 typedef struct IOWatchPoll
789 IOCanReadHandler *fd_can_read;
794 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
796 return container_of(source, IOWatchPoll, parent);
799 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
801 IOWatchPoll *iwp = io_watch_poll_from_source(source);
802 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
803 bool was_active = iwp->src != NULL;
804 if (was_active == now_active) {
809 iwp->src = g_io_create_watch(iwp->channel,
810 G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
811 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
812 g_source_attach(iwp->src, NULL);
814 g_source_destroy(iwp->src);
815 g_source_unref(iwp->src);
821 static gboolean io_watch_poll_check(GSource *source)
826 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
832 static void io_watch_poll_finalize(GSource *source)
834 /* Due to a glib bug, removing the last reference to a source
835 * inside a finalize callback causes recursive locking (and a
836 * deadlock). This is not a problem inside other callbacks,
837 * including dispatch callbacks, so we call io_remove_watch_poll
838 * to remove this source. At this point, iwp->src must
839 * be NULL, or we would leak it.
841 * This would be solved much more elegantly by child sources,
842 * but we support older glib versions that do not have them.
844 IOWatchPoll *iwp = io_watch_poll_from_source(source);
845 assert(iwp->src == NULL);
848 static GSourceFuncs io_watch_poll_funcs = {
849 .prepare = io_watch_poll_prepare,
850 .check = io_watch_poll_check,
851 .dispatch = io_watch_poll_dispatch,
852 .finalize = io_watch_poll_finalize,
855 /* Can only be used for read */
856 static guint io_add_watch_poll(GIOChannel *channel,
857 IOCanReadHandler *fd_can_read,
864 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
865 iwp->fd_can_read = fd_can_read;
866 iwp->opaque = user_data;
867 iwp->channel = channel;
868 iwp->fd_read = (GSourceFunc) fd_read;
871 tag = g_source_attach(&iwp->parent, NULL);
872 g_source_unref(&iwp->parent);
876 static void io_remove_watch_poll(guint tag)
881 g_return_if_fail (tag > 0);
883 source = g_main_context_find_source_by_id(NULL, tag);
884 g_return_if_fail (source != NULL);
886 iwp = io_watch_poll_from_source(source);
888 g_source_destroy(iwp->src);
889 g_source_unref(iwp->src);
892 g_source_destroy(&iwp->parent);
895 static void remove_fd_in_watch(CharDriverState *chr)
897 if (chr->fd_in_tag) {
898 io_remove_watch_poll(chr->fd_in_tag);
904 static GIOChannel *io_channel_from_fd(int fd)
912 chan = g_io_channel_unix_new(fd);
914 g_io_channel_set_encoding(chan, NULL, NULL);
915 g_io_channel_set_buffered(chan, FALSE);
921 static GIOChannel *io_channel_from_socket(int fd)
930 chan = g_io_channel_win32_new_socket(fd);
932 chan = g_io_channel_unix_new(fd);
935 g_io_channel_set_encoding(chan, NULL, NULL);
936 g_io_channel_set_buffered(chan, FALSE);
941 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
944 GIOStatus status = G_IO_STATUS_NORMAL;
946 while (offset < len && status == G_IO_STATUS_NORMAL) {
947 gsize bytes_written = 0;
949 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
950 &bytes_written, NULL);
951 offset += bytes_written;
958 case G_IO_STATUS_NORMAL:
961 case G_IO_STATUS_AGAIN:
973 typedef struct FDCharDriver {
974 CharDriverState *chr;
975 GIOChannel *fd_in, *fd_out;
979 /* Called with chr_write_lock held. */
980 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
982 FDCharDriver *s = chr->opaque;
984 return io_channel_send(s->fd_out, buf, len);
987 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
989 CharDriverState *chr = opaque;
990 FDCharDriver *s = chr->opaque;
992 uint8_t buf[READ_BUF_LEN];
997 if (len > s->max_size) {
1004 status = g_io_channel_read_chars(chan, (gchar *)buf,
1005 len, &bytes_read, NULL);
1006 if (status == G_IO_STATUS_EOF) {
1007 remove_fd_in_watch(chr);
1008 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1011 if (status == G_IO_STATUS_NORMAL) {
1012 qemu_chr_be_write(chr, buf, bytes_read);
1018 static int fd_chr_read_poll(void *opaque)
1020 CharDriverState *chr = opaque;
1021 FDCharDriver *s = chr->opaque;
1023 s->max_size = qemu_chr_be_can_write(chr);
1027 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1029 FDCharDriver *s = chr->opaque;
1030 return g_io_create_watch(s->fd_out, cond);
1033 static void fd_chr_update_read_handler(CharDriverState *chr)
1035 FDCharDriver *s = chr->opaque;
1037 remove_fd_in_watch(chr);
1039 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
1044 static void fd_chr_close(struct CharDriverState *chr)
1046 FDCharDriver *s = chr->opaque;
1048 remove_fd_in_watch(chr);
1050 g_io_channel_unref(s->fd_in);
1053 g_io_channel_unref(s->fd_out);
1057 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1060 /* open a character device to a unix fd */
1061 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
1063 CharDriverState *chr;
1066 chr = qemu_chr_alloc();
1067 s = g_new0(FDCharDriver, 1);
1068 s->fd_in = io_channel_from_fd(fd_in);
1069 s->fd_out = io_channel_from_fd(fd_out);
1070 qemu_set_nonblock(fd_out);
1073 chr->chr_add_watch = fd_chr_add_watch;
1074 chr->chr_write = fd_chr_write;
1075 chr->chr_update_read_handler = fd_chr_update_read_handler;
1076 chr->chr_close = fd_chr_close;
1081 static CharDriverState *qemu_chr_open_pipe(const char *id,
1082 ChardevBackend *backend,
1086 ChardevHostdev *opts = backend->pipe;
1088 char filename_in[CHR_MAX_FILENAME_SIZE];
1089 char filename_out[CHR_MAX_FILENAME_SIZE];
1090 const char *filename = opts->device;
1092 snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
1093 snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename);
1094 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1095 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
1096 if (fd_in < 0 || fd_out < 0) {
1101 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
1103 error_setg_file_open(errp, errno, filename);
1107 return qemu_chr_open_fd(fd_in, fd_out);
1110 /* init terminal so that we can grab keys */
1111 static struct termios oldtty;
1112 static int old_fd0_flags;
1113 static bool stdio_in_use;
1114 static bool stdio_allow_signal;
1115 static bool stdio_echo_state;
1117 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
1119 static void term_exit(void)
1121 tcsetattr (0, TCSANOW, &oldtty);
1122 fcntl(0, F_SETFL, old_fd0_flags);
1125 static void term_stdio_handler(int sig)
1127 /* restore echo after resume from suspend. */
1128 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1131 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
1135 stdio_echo_state = echo;
1138 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1139 |INLCR|IGNCR|ICRNL|IXON);
1140 tty.c_oflag |= OPOST;
1141 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1142 tty.c_cflag &= ~(CSIZE|PARENB);
1145 tty.c_cc[VTIME] = 0;
1147 if (!stdio_allow_signal)
1148 tty.c_lflag &= ~ISIG;
1150 tcsetattr (0, TCSANOW, &tty);
1153 static void qemu_chr_close_stdio(struct CharDriverState *chr)
1159 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
1161 CharDriverState *chr;
1162 struct sigaction act;
1164 if (is_daemonized()) {
1165 error_report("cannot use stdio with -daemonize");
1170 error_report("cannot use stdio by multiple character devices");
1174 stdio_in_use = true;
1175 old_fd0_flags = fcntl(0, F_GETFL);
1176 tcgetattr(0, &oldtty);
1177 qemu_set_nonblock(0);
1180 memset(&act, 0, sizeof(act));
1181 act.sa_handler = term_stdio_handler;
1182 sigaction(SIGCONT, &act, NULL);
1184 chr = qemu_chr_open_fd(0, 1);
1185 chr->chr_close = qemu_chr_close_stdio;
1186 chr->chr_set_echo = qemu_chr_set_echo_stdio;
1187 if (opts->has_signal) {
1188 stdio_allow_signal = opts->signal;
1190 qemu_chr_fe_set_echo(chr, false);
1195 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1196 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1197 || defined(__GLIBC__)
1199 #define HAVE_CHARDEV_SERIAL 1
1200 #define HAVE_CHARDEV_PTY 1
1206 /* Protected by the CharDriverState chr_write_lock. */
1212 static void pty_chr_update_read_handler_locked(CharDriverState *chr);
1213 static void pty_chr_state(CharDriverState *chr, int connected);
1215 static gboolean pty_chr_timer(gpointer opaque)
1217 struct CharDriverState *chr = opaque;
1218 PtyCharDriver *s = chr->opaque;
1220 qemu_mutex_lock(&chr->chr_write_lock);
1223 if (!s->connected) {
1225 pty_chr_update_read_handler_locked(chr);
1227 qemu_mutex_unlock(&chr->chr_write_lock);
1231 /* Called with chr_write_lock held. */
1232 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1234 PtyCharDriver *s = chr->opaque;
1237 g_source_remove(s->timer_tag);
1242 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1244 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1248 /* Called with chr_write_lock held. */
1249 static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1251 PtyCharDriver *s = chr->opaque;
1254 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1255 pfd.events = G_IO_OUT;
1258 if (pfd.revents & G_IO_HUP) {
1259 pty_chr_state(chr, 0);
1261 pty_chr_state(chr, 1);
1265 static void pty_chr_update_read_handler(CharDriverState *chr)
1267 qemu_mutex_lock(&chr->chr_write_lock);
1268 pty_chr_update_read_handler_locked(chr);
1269 qemu_mutex_unlock(&chr->chr_write_lock);
1272 /* Called with chr_write_lock held. */
1273 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1275 PtyCharDriver *s = chr->opaque;
1277 if (!s->connected) {
1278 /* guest sends data, check for (re-)connect */
1279 pty_chr_update_read_handler_locked(chr);
1280 if (!s->connected) {
1284 return io_channel_send(s->fd, buf, len);
1287 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1289 PtyCharDriver *s = chr->opaque;
1290 if (!s->connected) {
1293 return g_io_create_watch(s->fd, cond);
1296 static int pty_chr_read_poll(void *opaque)
1298 CharDriverState *chr = opaque;
1299 PtyCharDriver *s = chr->opaque;
1301 s->read_bytes = qemu_chr_be_can_write(chr);
1302 return s->read_bytes;
1305 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1307 CharDriverState *chr = opaque;
1308 PtyCharDriver *s = chr->opaque;
1310 uint8_t buf[READ_BUF_LEN];
1314 if (len > s->read_bytes)
1315 len = s->read_bytes;
1319 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1320 if (status != G_IO_STATUS_NORMAL) {
1321 pty_chr_state(chr, 0);
1324 pty_chr_state(chr, 1);
1325 qemu_chr_be_write(chr, buf, size);
1330 static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1332 CharDriverState *chr = opaque;
1333 PtyCharDriver *s = chr->opaque;
1336 qemu_chr_be_generic_open(chr);
1340 /* Called with chr_write_lock held. */
1341 static void pty_chr_state(CharDriverState *chr, int connected)
1343 PtyCharDriver *s = chr->opaque;
1347 g_source_remove(s->open_tag);
1350 remove_fd_in_watch(chr);
1352 /* (re-)connect poll interval for idle guests: once per second.
1353 * We check more frequently in case the guests sends data to
1354 * the virtual device linked to our pty. */
1355 pty_chr_rearm_timer(chr, 1000);
1358 g_source_remove(s->timer_tag);
1361 if (!s->connected) {
1362 g_assert(s->open_tag == 0);
1364 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
1366 if (!chr->fd_in_tag) {
1367 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1373 static void pty_chr_close(struct CharDriverState *chr)
1375 PtyCharDriver *s = chr->opaque;
1378 qemu_mutex_lock(&chr->chr_write_lock);
1379 pty_chr_state(chr, 0);
1380 fd = g_io_channel_unix_get_fd(s->fd);
1381 g_io_channel_unref(s->fd);
1384 g_source_remove(s->timer_tag);
1387 qemu_mutex_unlock(&chr->chr_write_lock);
1389 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1392 static CharDriverState *qemu_chr_open_pty(const char *id,
1393 ChardevBackend *backend,
1397 CharDriverState *chr;
1399 int master_fd, slave_fd;
1400 char pty_name[PATH_MAX];
1402 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1403 if (master_fd < 0) {
1404 error_setg_errno(errp, errno, "Failed to create PTY");
1409 qemu_set_nonblock(master_fd);
1411 chr = qemu_chr_alloc();
1413 chr->filename = g_strdup_printf("pty:%s", pty_name);
1414 ret->pty = g_strdup(pty_name);
1415 ret->has_pty = true;
1417 fprintf(stderr, "char device redirected to %s (label %s)\n",
1420 s = g_new0(PtyCharDriver, 1);
1422 chr->chr_write = pty_chr_write;
1423 chr->chr_update_read_handler = pty_chr_update_read_handler;
1424 chr->chr_close = pty_chr_close;
1425 chr->chr_add_watch = pty_chr_add_watch;
1426 chr->explicit_be_open = true;
1428 s->fd = io_channel_from_fd(master_fd);
1434 static void tty_serial_init(int fd, int speed,
1435 int parity, int data_bits, int stop_bits)
1441 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1442 speed, parity, data_bits, stop_bits);
1444 tcgetattr (fd, &tty);
1446 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1447 speed = speed * 10 / 11;
1464 /* Non-Posix values follow. They may be unsupported on some systems. */
1466 check_speed(115200);
1468 check_speed(230400);
1471 check_speed(460800);
1474 check_speed(500000);
1477 check_speed(576000);
1480 check_speed(921600);
1483 check_speed(1000000);
1486 check_speed(1152000);
1489 check_speed(1500000);
1492 check_speed(2000000);
1495 check_speed(2500000);
1498 check_speed(3000000);
1501 check_speed(3500000);
1504 check_speed(4000000);
1509 cfsetispeed(&tty, spd);
1510 cfsetospeed(&tty, spd);
1512 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1513 |INLCR|IGNCR|ICRNL|IXON);
1514 tty.c_oflag |= OPOST;
1515 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1516 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1537 tty.c_cflag |= PARENB;
1540 tty.c_cflag |= PARENB | PARODD;
1544 tty.c_cflag |= CSTOPB;
1546 tcsetattr (fd, TCSANOW, &tty);
1549 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1551 FDCharDriver *s = chr->opaque;
1554 case CHR_IOCTL_SERIAL_SET_PARAMS:
1556 QEMUSerialSetParams *ssp = arg;
1557 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1558 ssp->speed, ssp->parity,
1559 ssp->data_bits, ssp->stop_bits);
1562 case CHR_IOCTL_SERIAL_SET_BREAK:
1564 int enable = *(int *)arg;
1566 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1570 case CHR_IOCTL_SERIAL_GET_TIOCM:
1573 int *targ = (int *)arg;
1574 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1576 if (sarg & TIOCM_CTS)
1577 *targ |= CHR_TIOCM_CTS;
1578 if (sarg & TIOCM_CAR)
1579 *targ |= CHR_TIOCM_CAR;
1580 if (sarg & TIOCM_DSR)
1581 *targ |= CHR_TIOCM_DSR;
1582 if (sarg & TIOCM_RI)
1583 *targ |= CHR_TIOCM_RI;
1584 if (sarg & TIOCM_DTR)
1585 *targ |= CHR_TIOCM_DTR;
1586 if (sarg & TIOCM_RTS)
1587 *targ |= CHR_TIOCM_RTS;
1590 case CHR_IOCTL_SERIAL_SET_TIOCM:
1592 int sarg = *(int *)arg;
1594 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1595 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1596 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1597 if (sarg & CHR_TIOCM_CTS)
1599 if (sarg & CHR_TIOCM_CAR)
1601 if (sarg & CHR_TIOCM_DSR)
1603 if (sarg & CHR_TIOCM_RI)
1605 if (sarg & CHR_TIOCM_DTR)
1607 if (sarg & CHR_TIOCM_RTS)
1609 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1618 static void qemu_chr_close_tty(CharDriverState *chr)
1620 FDCharDriver *s = chr->opaque;
1624 fd = g_io_channel_unix_get_fd(s->fd_in);
1634 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1636 CharDriverState *chr;
1638 tty_serial_init(fd, 115200, 'N', 8, 1);
1639 chr = qemu_chr_open_fd(fd, fd);
1640 chr->chr_ioctl = tty_serial_ioctl;
1641 chr->chr_close = qemu_chr_close_tty;
1644 #endif /* __linux__ || __sun__ */
1646 #if defined(__linux__)
1648 #define HAVE_CHARDEV_PARPORT 1
1653 } ParallelCharDriver;
1655 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1657 if (s->mode != mode) {
1659 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1666 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1668 ParallelCharDriver *drv = chr->opaque;
1673 case CHR_IOCTL_PP_READ_DATA:
1674 if (ioctl(fd, PPRDATA, &b) < 0)
1676 *(uint8_t *)arg = b;
1678 case CHR_IOCTL_PP_WRITE_DATA:
1679 b = *(uint8_t *)arg;
1680 if (ioctl(fd, PPWDATA, &b) < 0)
1683 case CHR_IOCTL_PP_READ_CONTROL:
1684 if (ioctl(fd, PPRCONTROL, &b) < 0)
1686 /* Linux gives only the lowest bits, and no way to know data
1687 direction! For better compatibility set the fixed upper
1689 *(uint8_t *)arg = b | 0xc0;
1691 case CHR_IOCTL_PP_WRITE_CONTROL:
1692 b = *(uint8_t *)arg;
1693 if (ioctl(fd, PPWCONTROL, &b) < 0)
1696 case CHR_IOCTL_PP_READ_STATUS:
1697 if (ioctl(fd, PPRSTATUS, &b) < 0)
1699 *(uint8_t *)arg = b;
1701 case CHR_IOCTL_PP_DATA_DIR:
1702 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1705 case CHR_IOCTL_PP_EPP_READ_ADDR:
1706 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1707 struct ParallelIOArg *parg = arg;
1708 int n = read(fd, parg->buffer, parg->count);
1709 if (n != parg->count) {
1714 case CHR_IOCTL_PP_EPP_READ:
1715 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1716 struct ParallelIOArg *parg = arg;
1717 int n = read(fd, parg->buffer, parg->count);
1718 if (n != parg->count) {
1723 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1724 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1725 struct ParallelIOArg *parg = arg;
1726 int n = write(fd, parg->buffer, parg->count);
1727 if (n != parg->count) {
1732 case CHR_IOCTL_PP_EPP_WRITE:
1733 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1734 struct ParallelIOArg *parg = arg;
1735 int n = write(fd, parg->buffer, parg->count);
1736 if (n != parg->count) {
1747 static void pp_close(CharDriverState *chr)
1749 ParallelCharDriver *drv = chr->opaque;
1752 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1753 ioctl(fd, PPRELEASE);
1756 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1759 static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp)
1761 CharDriverState *chr;
1762 ParallelCharDriver *drv;
1764 if (ioctl(fd, PPCLAIM) < 0) {
1765 error_setg_errno(errp, errno, "not a parallel port");
1770 drv = g_new0(ParallelCharDriver, 1);
1772 drv->mode = IEEE1284_MODE_COMPAT;
1774 chr = qemu_chr_alloc();
1775 chr->chr_write = null_chr_write;
1776 chr->chr_ioctl = pp_ioctl;
1777 chr->chr_close = pp_close;
1782 #endif /* __linux__ */
1784 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1786 #define HAVE_CHARDEV_PARPORT 1
1788 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1790 int fd = (int)(intptr_t)chr->opaque;
1794 case CHR_IOCTL_PP_READ_DATA:
1795 if (ioctl(fd, PPIGDATA, &b) < 0)
1797 *(uint8_t *)arg = b;
1799 case CHR_IOCTL_PP_WRITE_DATA:
1800 b = *(uint8_t *)arg;
1801 if (ioctl(fd, PPISDATA, &b) < 0)
1804 case CHR_IOCTL_PP_READ_CONTROL:
1805 if (ioctl(fd, PPIGCTRL, &b) < 0)
1807 *(uint8_t *)arg = b;
1809 case CHR_IOCTL_PP_WRITE_CONTROL:
1810 b = *(uint8_t *)arg;
1811 if (ioctl(fd, PPISCTRL, &b) < 0)
1814 case CHR_IOCTL_PP_READ_STATUS:
1815 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1817 *(uint8_t *)arg = b;
1825 static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp)
1827 CharDriverState *chr;
1829 chr = qemu_chr_alloc();
1830 chr->opaque = (void *)(intptr_t)fd;
1831 chr->chr_write = null_chr_write;
1832 chr->chr_ioctl = pp_ioctl;
1833 chr->explicit_be_open = true;
1840 #define HAVE_CHARDEV_SERIAL 1
1844 HANDLE hcom, hrecv, hsend;
1849 /* Protected by the CharDriverState chr_write_lock. */
1855 HANDLE hInputReadyEvent;
1856 HANDLE hInputDoneEvent;
1857 HANDLE hInputThread;
1858 uint8_t win_stdio_buf;
1859 } WinStdioCharState;
1861 #define NSENDBUF 2048
1862 #define NRECVBUF 2048
1863 #define MAXCONNECT 1
1864 #define NTIMEOUT 5000
1866 static int win_chr_poll(void *opaque);
1867 static int win_chr_pipe_poll(void *opaque);
1869 static void win_chr_close(CharDriverState *chr)
1871 WinCharState *s = chr->opaque;
1874 CloseHandle(s->hsend);
1878 CloseHandle(s->hrecv);
1882 CloseHandle(s->hcom);
1886 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1888 qemu_del_polling_cb(win_chr_poll, chr);
1890 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1893 static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
1895 WinCharState *s = chr->opaque;
1897 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1902 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1904 error_setg(errp, "Failed CreateEvent");
1907 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1909 error_setg(errp, "Failed CreateEvent");
1913 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1914 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1915 if (s->hcom == INVALID_HANDLE_VALUE) {
1916 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
1921 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1922 error_setg(errp, "Failed SetupComm");
1926 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1927 size = sizeof(COMMCONFIG);
1928 GetDefaultCommConfig(filename, &comcfg, &size);
1929 comcfg.dcb.DCBlength = sizeof(DCB);
1930 CommConfigDialog(filename, NULL, &comcfg);
1932 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1933 error_setg(errp, "Failed SetCommState");
1937 if (!SetCommMask(s->hcom, EV_ERR)) {
1938 error_setg(errp, "Failed SetCommMask");
1942 cto.ReadIntervalTimeout = MAXDWORD;
1943 if (!SetCommTimeouts(s->hcom, &cto)) {
1944 error_setg(errp, "Failed SetCommTimeouts");
1948 if (!ClearCommError(s->hcom, &err, &comstat)) {
1949 error_setg(errp, "Failed ClearCommError");
1952 qemu_add_polling_cb(win_chr_poll, chr);
1960 /* Called with chr_write_lock held. */
1961 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1963 WinCharState *s = chr->opaque;
1964 DWORD len, ret, size, err;
1967 ZeroMemory(&s->osend, sizeof(s->osend));
1968 s->osend.hEvent = s->hsend;
1971 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1973 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1975 err = GetLastError();
1976 if (err == ERROR_IO_PENDING) {
1977 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1995 static int win_chr_read_poll(CharDriverState *chr)
1997 WinCharState *s = chr->opaque;
1999 s->max_size = qemu_chr_be_can_write(chr);
2003 static void win_chr_readfile(CharDriverState *chr)
2005 WinCharState *s = chr->opaque;
2007 uint8_t buf[READ_BUF_LEN];
2010 ZeroMemory(&s->orecv, sizeof(s->orecv));
2011 s->orecv.hEvent = s->hrecv;
2012 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2014 err = GetLastError();
2015 if (err == ERROR_IO_PENDING) {
2016 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2021 qemu_chr_be_write(chr, buf, size);
2025 static void win_chr_read(CharDriverState *chr)
2027 WinCharState *s = chr->opaque;
2029 if (s->len > s->max_size)
2030 s->len = s->max_size;
2034 win_chr_readfile(chr);
2037 static int win_chr_poll(void *opaque)
2039 CharDriverState *chr = opaque;
2040 WinCharState *s = chr->opaque;
2044 ClearCommError(s->hcom, &comerr, &status);
2045 if (status.cbInQue > 0) {
2046 s->len = status.cbInQue;
2047 win_chr_read_poll(chr);
2054 static CharDriverState *qemu_chr_open_win_path(const char *filename,
2057 CharDriverState *chr;
2060 chr = qemu_chr_alloc();
2061 s = g_new0(WinCharState, 1);
2063 chr->chr_write = win_chr_write;
2064 chr->chr_close = win_chr_close;
2066 if (win_chr_init(chr, filename, errp) < 0) {
2074 static int win_chr_pipe_poll(void *opaque)
2076 CharDriverState *chr = opaque;
2077 WinCharState *s = chr->opaque;
2080 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2083 win_chr_read_poll(chr);
2090 static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2093 WinCharState *s = chr->opaque;
2097 char openname[CHR_MAX_FILENAME_SIZE];
2101 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2103 error_setg(errp, "Failed CreateEvent");
2106 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2108 error_setg(errp, "Failed CreateEvent");
2112 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
2113 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2114 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2116 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
2117 if (s->hcom == INVALID_HANDLE_VALUE) {
2118 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
2123 ZeroMemory(&ov, sizeof(ov));
2124 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2125 ret = ConnectNamedPipe(s->hcom, &ov);
2127 error_setg(errp, "Failed ConnectNamedPipe");
2131 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2133 error_setg(errp, "Failed GetOverlappedResult");
2135 CloseHandle(ov.hEvent);
2142 CloseHandle(ov.hEvent);
2145 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2154 static CharDriverState *qemu_chr_open_pipe(const char *id,
2155 ChardevBackend *backend,
2159 ChardevHostdev *opts = backend->pipe;
2160 const char *filename = opts->device;
2161 CharDriverState *chr;
2164 chr = qemu_chr_alloc();
2165 s = g_new0(WinCharState, 1);
2167 chr->chr_write = win_chr_write;
2168 chr->chr_close = win_chr_close;
2170 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2178 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
2180 CharDriverState *chr;
2183 chr = qemu_chr_alloc();
2184 s = g_new0(WinCharState, 1);
2187 chr->chr_write = win_chr_write;
2191 static CharDriverState *qemu_chr_open_win_con(void)
2193 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
2196 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2198 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2205 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2215 static void win_stdio_wait_func(void *opaque)
2217 CharDriverState *chr = opaque;
2218 WinStdioCharState *stdio = chr->opaque;
2219 INPUT_RECORD buf[4];
2224 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
2227 /* Avoid error storm */
2228 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2232 for (i = 0; i < dwSize; i++) {
2233 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2235 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2237 if (kev->uChar.AsciiChar != 0) {
2238 for (j = 0; j < kev->wRepeatCount; j++) {
2239 if (qemu_chr_be_can_write(chr)) {
2240 uint8_t c = kev->uChar.AsciiChar;
2241 qemu_chr_be_write(chr, &c, 1);
2249 static DWORD WINAPI win_stdio_thread(LPVOID param)
2251 CharDriverState *chr = param;
2252 WinStdioCharState *stdio = chr->opaque;
2258 /* Wait for one byte */
2259 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2261 /* Exit in case of error, continue if nothing read */
2269 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2270 if (stdio->win_stdio_buf == '\r') {
2274 /* Signal the main thread and wait until the byte was eaten */
2275 if (!SetEvent(stdio->hInputReadyEvent)) {
2278 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2284 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2288 static void win_stdio_thread_wait_func(void *opaque)
2290 CharDriverState *chr = opaque;
2291 WinStdioCharState *stdio = chr->opaque;
2293 if (qemu_chr_be_can_write(chr)) {
2294 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2297 SetEvent(stdio->hInputDoneEvent);
2300 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2302 WinStdioCharState *stdio = chr->opaque;
2305 GetConsoleMode(stdio->hStdIn, &dwMode);
2308 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2310 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2314 static void win_stdio_close(CharDriverState *chr)
2316 WinStdioCharState *stdio = chr->opaque;
2318 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2319 CloseHandle(stdio->hInputReadyEvent);
2321 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2322 CloseHandle(stdio->hInputDoneEvent);
2324 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2325 TerminateThread(stdio->hInputThread, 0);
2328 g_free(chr->opaque);
2332 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2334 CharDriverState *chr;
2335 WinStdioCharState *stdio;
2339 chr = qemu_chr_alloc();
2340 stdio = g_new0(WinStdioCharState, 1);
2342 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2343 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2344 fprintf(stderr, "cannot open stdio: invalid handle\n");
2348 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2350 chr->opaque = stdio;
2351 chr->chr_write = win_stdio_write;
2352 chr->chr_close = win_stdio_close;
2355 if (qemu_add_wait_object(stdio->hStdIn,
2356 win_stdio_wait_func, chr)) {
2357 fprintf(stderr, "qemu_add_wait_object: failed\n");
2362 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2363 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2364 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2367 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2368 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2369 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2370 fprintf(stderr, "cannot create stdio thread or event\n");
2373 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2374 win_stdio_thread_wait_func, chr)) {
2375 fprintf(stderr, "qemu_add_wait_object: failed\n");
2379 dwMode |= ENABLE_LINE_INPUT;
2382 /* set the terminal in raw mode */
2383 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2384 dwMode |= ENABLE_PROCESSED_INPUT;
2387 SetConsoleMode(stdio->hStdIn, dwMode);
2389 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2390 qemu_chr_fe_set_echo(chr, false);
2394 #endif /* !_WIN32 */
2397 /***********************************************************/
2398 /* UDP Net console */
2403 uint8_t buf[READ_BUF_LEN];
2409 /* Called with chr_write_lock held. */
2410 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2412 NetCharDriver *s = chr->opaque;
2413 gsize bytes_written;
2416 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2417 if (status == G_IO_STATUS_EOF) {
2419 } else if (status != G_IO_STATUS_NORMAL) {
2423 return bytes_written;
2426 static int udp_chr_read_poll(void *opaque)
2428 CharDriverState *chr = opaque;
2429 NetCharDriver *s = chr->opaque;
2431 s->max_size = qemu_chr_be_can_write(chr);
2433 /* If there were any stray characters in the queue process them
2436 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2437 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2439 s->max_size = qemu_chr_be_can_write(chr);
2444 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2446 CharDriverState *chr = opaque;
2447 NetCharDriver *s = chr->opaque;
2448 gsize bytes_read = 0;
2451 if (s->max_size == 0) {
2454 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2456 s->bufcnt = bytes_read;
2457 s->bufptr = s->bufcnt;
2458 if (status != G_IO_STATUS_NORMAL) {
2459 remove_fd_in_watch(chr);
2464 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2465 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2467 s->max_size = qemu_chr_be_can_write(chr);
2473 static void udp_chr_update_read_handler(CharDriverState *chr)
2475 NetCharDriver *s = chr->opaque;
2477 remove_fd_in_watch(chr);
2479 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2484 static void udp_chr_close(CharDriverState *chr)
2486 NetCharDriver *s = chr->opaque;
2488 remove_fd_in_watch(chr);
2490 g_io_channel_unref(s->chan);
2494 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2497 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2499 CharDriverState *chr = NULL;
2500 NetCharDriver *s = NULL;
2502 chr = qemu_chr_alloc();
2503 s = g_new0(NetCharDriver, 1);
2506 s->chan = io_channel_from_socket(s->fd);
2510 chr->chr_write = udp_chr_write;
2511 chr->chr_update_read_handler = udp_chr_update_read_handler;
2512 chr->chr_close = udp_chr_close;
2513 /* be isn't opened until we get a connection */
2514 chr->explicit_be_open = true;
2518 /***********************************************************/
2519 /* TCP Net console */
2523 GIOChannel *chan, *listen_chan;
2532 int read_msgfds_num;
2534 int write_msgfds_num;
2536 SocketAddress *addr;
2540 guint reconnect_timer;
2541 int64_t reconnect_time;
2542 bool connect_err_reported;
2545 static gboolean socket_reconnect_timeout(gpointer opaque);
2547 static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2549 TCPCharDriver *s = chr->opaque;
2550 assert(s->connected == 0);
2551 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2552 socket_reconnect_timeout, chr);
2555 static void check_report_connect_error(CharDriverState *chr,
2558 TCPCharDriver *s = chr->opaque;
2560 if (!s->connect_err_reported) {
2561 error_report("Unable to connect character device %s: %s",
2562 chr->label, error_get_pretty(err));
2563 s->connect_err_reported = true;
2565 qemu_chr_socket_restart_timer(chr);
2568 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2571 static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2573 TCPCharDriver *s = chr->opaque;
2578 size_t fd_size = s->write_msgfds_num * sizeof(int);
2579 char control[CMSG_SPACE(fd_size)];
2580 struct cmsghdr *cmsg;
2582 memset(&msgh, 0, sizeof(msgh));
2583 memset(control, 0, sizeof(control));
2585 /* set the payload */
2586 iov.iov_base = (uint8_t *) buf;
2589 msgh.msg_iov = &iov;
2590 msgh.msg_iovlen = 1;
2592 msgh.msg_control = control;
2593 msgh.msg_controllen = sizeof(control);
2595 cmsg = CMSG_FIRSTHDR(&msgh);
2597 cmsg->cmsg_len = CMSG_LEN(fd_size);
2598 cmsg->cmsg_level = SOL_SOCKET;
2599 cmsg->cmsg_type = SCM_RIGHTS;
2600 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2603 r = sendmsg(s->fd, &msgh, 0);
2604 } while (r < 0 && errno == EINTR);
2606 /* free the written msgfds, no matter what */
2607 if (s->write_msgfds_num) {
2608 g_free(s->write_msgfds);
2609 s->write_msgfds = 0;
2610 s->write_msgfds_num = 0;
2617 /* Called with chr_write_lock held. */
2618 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2620 TCPCharDriver *s = chr->opaque;
2623 if (s->is_unix && s->write_msgfds_num) {
2624 return unix_send_msgfds(chr, buf, len);
2628 return io_channel_send(s->chan, buf, len);
2631 /* XXX: indicate an error ? */
2636 static int tcp_chr_read_poll(void *opaque)
2638 CharDriverState *chr = opaque;
2639 TCPCharDriver *s = chr->opaque;
2642 s->max_size = qemu_chr_be_can_write(chr);
2647 #define IAC_BREAK 243
2648 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2650 uint8_t *buf, int *size)
2652 /* Handle any telnet client's basic IAC options to satisfy char by
2653 * char mode with no echo. All IAC options will be removed from
2654 * the buf and the do_telnetopt variable will be used to track the
2655 * state of the width of the IAC information.
2657 * IAC commands come in sets of 3 bytes with the exception of the
2658 * "IAC BREAK" command and the double IAC.
2664 for (i = 0; i < *size; i++) {
2665 if (s->do_telnetopt > 1) {
2666 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2667 /* Double IAC means send an IAC */
2671 s->do_telnetopt = 1;
2673 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2674 /* Handle IAC break commands by sending a serial break */
2675 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2680 if (s->do_telnetopt >= 4) {
2681 s->do_telnetopt = 1;
2684 if ((unsigned char)buf[i] == IAC) {
2685 s->do_telnetopt = 2;
2696 static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
2698 TCPCharDriver *s = chr->opaque;
2699 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2701 assert(num <= TCP_MAX_FDS);
2706 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2708 /* Close unused fds */
2709 for (i = to_copy; i < s->read_msgfds_num; i++) {
2710 close(s->read_msgfds[i]);
2713 g_free(s->read_msgfds);
2715 s->read_msgfds_num = 0;
2721 static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2723 TCPCharDriver *s = chr->opaque;
2725 /* clear old pending fd array */
2726 g_free(s->write_msgfds);
2729 s->write_msgfds = g_new(int, num);
2730 memcpy(s->write_msgfds, fds, num * sizeof(int));
2733 s->write_msgfds_num = num;
2739 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2741 TCPCharDriver *s = chr->opaque;
2742 struct cmsghdr *cmsg;
2744 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2747 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
2748 cmsg->cmsg_level != SOL_SOCKET ||
2749 cmsg->cmsg_type != SCM_RIGHTS) {
2753 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2759 /* close and clean read_msgfds */
2760 for (i = 0; i < s->read_msgfds_num; i++) {
2761 close(s->read_msgfds[i]);
2764 if (s->read_msgfds_num) {
2765 g_free(s->read_msgfds);
2768 s->read_msgfds_num = fd_size / sizeof(int);
2769 s->read_msgfds = g_malloc(fd_size);
2770 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2772 for (i = 0; i < s->read_msgfds_num; i++) {
2773 int fd = s->read_msgfds[i];
2778 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2781 #ifndef MSG_CMSG_CLOEXEC
2782 qemu_set_cloexec(fd);
2788 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2790 TCPCharDriver *s = chr->opaque;
2791 struct msghdr msg = { NULL, };
2792 struct iovec iov[1];
2794 struct cmsghdr cmsg;
2795 char control[CMSG_SPACE(sizeof(int) * TCP_MAX_FDS)];
2800 iov[0].iov_base = buf;
2801 iov[0].iov_len = len;
2805 msg.msg_control = &msg_control;
2806 msg.msg_controllen = sizeof(msg_control);
2808 #ifdef MSG_CMSG_CLOEXEC
2809 flags |= MSG_CMSG_CLOEXEC;
2812 ret = recvmsg(s->fd, &msg, flags);
2813 } while (ret == -1 && errno == EINTR);
2815 if (ret > 0 && s->is_unix) {
2816 unix_process_msgfd(chr, &msg);
2822 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2824 TCPCharDriver *s = chr->opaque;
2828 ret = qemu_recv(s->fd, buf, len, 0);
2829 } while (ret == -1 && socket_error() == EINTR);
2835 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2837 TCPCharDriver *s = chr->opaque;
2838 return g_io_create_watch(s->chan, cond);
2841 static void tcp_chr_disconnect(CharDriverState *chr)
2843 TCPCharDriver *s = chr->opaque;
2846 if (s->listen_chan) {
2847 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2848 tcp_chr_accept, chr);
2850 remove_fd_in_watch(chr);
2851 g_io_channel_unref(s->chan);
2855 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2856 "disconnected:", s->addr, s->is_listen, s->is_telnet);
2857 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2858 if (s->reconnect_time) {
2859 qemu_chr_socket_restart_timer(chr);
2863 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2865 CharDriverState *chr = opaque;
2866 TCPCharDriver *s = chr->opaque;
2867 uint8_t buf[READ_BUF_LEN];
2870 if (!s->connected || s->max_size <= 0) {
2874 if (len > s->max_size)
2876 size = tcp_chr_recv(chr, (void *)buf, len);
2879 socket_error() != EAGAIN && socket_error() != EWOULDBLOCK)) {
2880 /* connection closed */
2881 tcp_chr_disconnect(chr);
2882 } else if (size > 0) {
2883 if (s->do_telnetopt)
2884 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2886 qemu_chr_be_write(chr, buf, size);
2892 static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2894 TCPCharDriver *s = chr->opaque;
2897 if (!s->connected) {
2901 size = tcp_chr_recv(chr, (void *) buf, len);
2903 /* connection closed */
2904 tcp_chr_disconnect(chr);
2911 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2913 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2916 chr->avail_connections = 1;
2923 static void tcp_chr_connect(void *opaque)
2925 CharDriverState *chr = opaque;
2926 TCPCharDriver *s = chr->opaque;
2927 struct sockaddr_storage ss, ps;
2928 socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
2930 memset(&ss, 0, ss_len);
2931 if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2932 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2933 "Error in getsockname: %s\n", strerror(errno));
2934 } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
2935 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2936 "Error in getpeername: %s\n", strerror(errno));
2938 sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2939 &ss, ss_len, &ps, ps_len,
2940 s->is_listen, s->is_telnet);
2945 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2948 qemu_chr_be_generic_open(chr);
2951 static void tcp_chr_update_read_handler(CharDriverState *chr)
2953 TCPCharDriver *s = chr->opaque;
2955 remove_fd_in_watch(chr);
2957 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2962 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2963 static void tcp_chr_telnet_init(int fd)
2966 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2967 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2968 send(fd, (char *)buf, 3, 0);
2969 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2970 send(fd, (char *)buf, 3, 0);
2971 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2972 send(fd, (char *)buf, 3, 0);
2973 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2974 send(fd, (char *)buf, 3, 0);
2977 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2979 TCPCharDriver *s = chr->opaque;
2983 qemu_set_nonblock(fd);
2985 socket_set_nodelay(fd);
2987 s->chan = io_channel_from_socket(fd);
2988 if (s->listen_tag) {
2989 g_source_remove(s->listen_tag);
2992 tcp_chr_connect(chr);
2997 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2999 CharDriverState *chr = opaque;
3000 TCPCharDriver *s = chr->opaque;
3001 struct sockaddr_in saddr;
3003 struct sockaddr_un uaddr;
3005 struct sockaddr *addr;
3012 len = sizeof(uaddr);
3013 addr = (struct sockaddr *)&uaddr;
3017 len = sizeof(saddr);
3018 addr = (struct sockaddr *)&saddr;
3020 fd = qemu_accept(s->listen_fd, addr, &len);
3021 if (fd < 0 && errno != EINTR) {
3024 } else if (fd >= 0) {
3025 if (s->do_telnetopt)
3026 tcp_chr_telnet_init(fd);
3030 if (tcp_chr_add_client(chr, fd) < 0)
3036 static void tcp_chr_close(CharDriverState *chr)
3038 TCPCharDriver *s = chr->opaque;
3041 if (s->reconnect_timer) {
3042 g_source_remove(s->reconnect_timer);
3043 s->reconnect_timer = 0;
3045 qapi_free_SocketAddress(s->addr);
3047 remove_fd_in_watch(chr);
3049 g_io_channel_unref(s->chan);
3053 if (s->listen_fd >= 0) {
3054 if (s->listen_tag) {
3055 g_source_remove(s->listen_tag);
3058 if (s->listen_chan) {
3059 g_io_channel_unref(s->listen_chan);
3061 closesocket(s->listen_fd);
3063 if (s->read_msgfds_num) {
3064 for (i = 0; i < s->read_msgfds_num; i++) {
3065 close(s->read_msgfds[i]);
3067 g_free(s->read_msgfds);
3069 if (s->write_msgfds_num) {
3070 g_free(s->write_msgfds);
3073 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
3076 static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
3078 TCPCharDriver *s = chr->opaque;
3082 s->listen_chan = io_channel_from_socket(s->listen_fd);
3083 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
3084 tcp_chr_accept, chr);
3088 socket_set_nodelay(fd);
3089 s->chan = io_channel_from_socket(s->fd);
3090 tcp_chr_connect(chr);
3094 static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
3096 CharDriverState *chr = opaque;
3097 TCPCharDriver *s = chr->opaque;
3100 check_report_connect_error(chr, err);
3104 s->connect_err_reported = false;
3105 qemu_chr_finish_socket_connection(chr, fd);
3108 static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
3110 TCPCharDriver *s = chr->opaque;
3114 fd = socket_listen(s->addr, errp);
3115 } else if (s->reconnect_time) {
3116 fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
3119 fd = socket_connect(s->addr, errp, NULL, NULL);
3125 qemu_chr_finish_socket_connection(chr, fd);
3129 /*********************************************************/
3130 /* Ring buffer chardev */
3137 } RingBufCharDriver;
3139 static size_t ringbuf_count(const CharDriverState *chr)
3141 const RingBufCharDriver *d = chr->opaque;
3143 return d->prod - d->cons;
3146 /* Called with chr_write_lock held. */
3147 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
3149 RingBufCharDriver *d = chr->opaque;
3152 if (!buf || (len < 0)) {
3156 for (i = 0; i < len; i++ ) {
3157 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3158 if (d->prod - d->cons > d->size) {
3159 d->cons = d->prod - d->size;
3166 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
3168 RingBufCharDriver *d = chr->opaque;
3171 qemu_mutex_lock(&chr->chr_write_lock);
3172 for (i = 0; i < len && d->cons != d->prod; i++) {
3173 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
3175 qemu_mutex_unlock(&chr->chr_write_lock);
3180 static void ringbuf_chr_close(struct CharDriverState *chr)
3182 RingBufCharDriver *d = chr->opaque;
3189 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3192 CharDriverState *chr;
3193 RingBufCharDriver *d;
3195 chr = qemu_chr_alloc();
3196 d = g_malloc(sizeof(*d));
3198 d->size = opts->has_size ? opts->size : 65536;
3200 /* The size must be power of 2 */
3201 if (d->size & (d->size - 1)) {
3202 error_setg(errp, "size of ringbuf chardev must be power of two");
3208 d->cbuf = g_malloc0(d->size);
3211 chr->chr_write = ringbuf_chr_write;
3212 chr->chr_close = ringbuf_chr_close;
3222 bool chr_is_ringbuf(const CharDriverState *chr)
3224 return chr->chr_write == ringbuf_chr_write;
3227 void qmp_ringbuf_write(const char *device, const char *data,
3228 bool has_format, enum DataFormat format,
3231 CharDriverState *chr;
3232 const uint8_t *write_data;
3236 chr = qemu_chr_find(device);
3238 error_setg(errp, "Device '%s' not found", device);
3242 if (!chr_is_ringbuf(chr)) {
3243 error_setg(errp,"%s is not a ringbuf device", device);
3247 if (has_format && (format == DATA_FORMAT_BASE64)) {
3248 write_data = g_base64_decode(data, &write_count);
3250 write_data = (uint8_t *)data;
3251 write_count = strlen(data);
3254 ret = ringbuf_chr_write(chr, write_data, write_count);
3256 if (write_data != (uint8_t *)data) {
3257 g_free((void *)write_data);
3261 error_setg(errp, "Failed to write to device %s", device);
3266 char *qmp_ringbuf_read(const char *device, int64_t size,
3267 bool has_format, enum DataFormat format,
3270 CharDriverState *chr;
3275 chr = qemu_chr_find(device);
3277 error_setg(errp, "Device '%s' not found", device);
3281 if (!chr_is_ringbuf(chr)) {
3282 error_setg(errp,"%s is not a ringbuf device", device);
3287 error_setg(errp, "size must be greater than zero");
3291 count = ringbuf_count(chr);
3292 size = size > count ? count : size;
3293 read_data = g_malloc(size + 1);
3295 ringbuf_chr_read(chr, read_data, size);
3297 if (has_format && (format == DATA_FORMAT_BASE64)) {
3298 data = g_base64_encode(read_data, size);
3302 * FIXME should read only complete, valid UTF-8 characters up
3303 * to @size bytes. Invalid sequences should be replaced by a
3304 * suitable replacement character. Except when (and only
3305 * when) ring buffer lost characters since last read, initial
3306 * continuation characters should be dropped.
3308 read_data[size] = 0;
3309 data = (char *)read_data;
3315 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3317 char host[65], port[33], width[8], height[8];
3321 Error *local_err = NULL;
3323 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3325 error_report_err(local_err);
3329 if (strstart(filename, "mon:", &p)) {
3331 qemu_opt_set(opts, "mux", "on", &error_abort);
3332 if (strcmp(filename, "stdio") == 0) {
3333 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3334 * but pass it to the guest. Handle this only for compat syntax,
3335 * for -chardev syntax we have special option for this.
3336 * This is what -nographic did, redirecting+muxing serial+monitor
3337 * to stdio causing Ctrl+C to be passed to guest. */
3338 qemu_opt_set(opts, "signal", "off", &error_abort);
3342 if (strcmp(filename, "null") == 0 ||
3343 strcmp(filename, "pty") == 0 ||
3344 strcmp(filename, "msmouse") == 0 ||
3345 strcmp(filename, "braille") == 0 ||
3346 strcmp(filename, "testdev") == 0 ||
3347 strcmp(filename, "stdio") == 0) {
3348 qemu_opt_set(opts, "backend", filename, &error_abort);
3351 if (strstart(filename, "vc", &p)) {
3352 qemu_opt_set(opts, "backend", "vc", &error_abort);
3354 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
3356 qemu_opt_set(opts, "width", width, &error_abort);
3357 qemu_opt_set(opts, "height", height, &error_abort);
3358 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
3360 qemu_opt_set(opts, "cols", width, &error_abort);
3361 qemu_opt_set(opts, "rows", height, &error_abort);
3368 if (strcmp(filename, "con:") == 0) {
3369 qemu_opt_set(opts, "backend", "console", &error_abort);
3372 if (strstart(filename, "COM", NULL)) {
3373 qemu_opt_set(opts, "backend", "serial", &error_abort);
3374 qemu_opt_set(opts, "path", filename, &error_abort);
3377 if (strstart(filename, "file:", &p)) {
3378 qemu_opt_set(opts, "backend", "file", &error_abort);
3379 qemu_opt_set(opts, "path", p, &error_abort);
3382 if (strstart(filename, "pipe:", &p)) {
3383 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3384 qemu_opt_set(opts, "path", p, &error_abort);
3387 if (strstart(filename, "tcp:", &p) ||
3388 strstart(filename, "telnet:", &p)) {
3389 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3391 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3394 qemu_opt_set(opts, "backend", "socket", &error_abort);
3395 qemu_opt_set(opts, "host", host, &error_abort);
3396 qemu_opt_set(opts, "port", port, &error_abort);
3397 if (p[pos] == ',') {
3398 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3400 error_report_err(local_err);
3404 if (strstart(filename, "telnet:", &p))
3405 qemu_opt_set(opts, "telnet", "on", &error_abort);
3408 if (strstart(filename, "udp:", &p)) {
3409 qemu_opt_set(opts, "backend", "udp", &error_abort);
3410 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3412 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3416 qemu_opt_set(opts, "host", host, &error_abort);
3417 qemu_opt_set(opts, "port", port, &error_abort);
3418 if (p[pos] == '@') {
3420 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3422 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3426 qemu_opt_set(opts, "localaddr", host, &error_abort);
3427 qemu_opt_set(opts, "localport", port, &error_abort);
3431 if (strstart(filename, "unix:", &p)) {
3432 qemu_opt_set(opts, "backend", "socket", &error_abort);
3433 qemu_opts_do_parse(opts, p, "path", &local_err);
3435 error_report_err(local_err);
3440 if (strstart(filename, "/dev/parport", NULL) ||
3441 strstart(filename, "/dev/ppi", NULL)) {
3442 qemu_opt_set(opts, "backend", "parport", &error_abort);
3443 qemu_opt_set(opts, "path", filename, &error_abort);
3446 if (strstart(filename, "/dev/", NULL)) {
3447 qemu_opt_set(opts, "backend", "tty", &error_abort);
3448 qemu_opt_set(opts, "path", filename, &error_abort);
3453 qemu_opts_del(opts);
3457 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3460 const char *path = qemu_opt_get(opts, "path");
3463 error_setg(errp, "chardev: file: no filename given");
3466 backend->file = g_new0(ChardevFile, 1);
3467 backend->file->out = g_strdup(path);
3470 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3473 backend->stdio = g_new0(ChardevStdio, 1);
3474 backend->stdio->has_signal = true;
3475 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3478 #ifdef HAVE_CHARDEV_SERIAL
3479 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3482 const char *device = qemu_opt_get(opts, "path");
3484 if (device == NULL) {
3485 error_setg(errp, "chardev: serial/tty: no device path given");
3488 backend->serial = g_new0(ChardevHostdev, 1);
3489 backend->serial->device = g_strdup(device);
3493 #ifdef HAVE_CHARDEV_PARPORT
3494 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3497 const char *device = qemu_opt_get(opts, "path");
3499 if (device == NULL) {
3500 error_setg(errp, "chardev: parallel: no device path given");
3503 backend->parallel = g_new0(ChardevHostdev, 1);
3504 backend->parallel->device = g_strdup(device);
3508 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3511 const char *device = qemu_opt_get(opts, "path");
3513 if (device == NULL) {
3514 error_setg(errp, "chardev: pipe: no device path given");
3517 backend->pipe = g_new0(ChardevHostdev, 1);
3518 backend->pipe->device = g_strdup(device);
3521 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3526 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3528 val = qemu_opt_get_size(opts, "size", 0);
3530 backend->ringbuf->has_size = true;
3531 backend->ringbuf->size = val;
3535 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3538 const char *chardev = qemu_opt_get(opts, "chardev");
3540 if (chardev == NULL) {
3541 error_setg(errp, "chardev: mux: no chardev given");
3544 backend->mux = g_new0(ChardevMux, 1);
3545 backend->mux->chardev = g_strdup(chardev);
3548 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3551 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3552 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3553 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3554 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
3555 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
3556 const char *path = qemu_opt_get(opts, "path");
3557 const char *host = qemu_opt_get(opts, "host");
3558 const char *port = qemu_opt_get(opts, "port");
3559 SocketAddress *addr;
3563 error_setg(errp, "chardev: socket: no host given");
3567 error_setg(errp, "chardev: socket: no port given");
3572 backend->socket = g_new0(ChardevSocket, 1);
3574 backend->socket->has_nodelay = true;
3575 backend->socket->nodelay = do_nodelay;
3576 backend->socket->has_server = true;
3577 backend->socket->server = is_listen;
3578 backend->socket->has_telnet = true;
3579 backend->socket->telnet = is_telnet;
3580 backend->socket->has_wait = true;
3581 backend->socket->wait = is_waitconnect;
3582 backend->socket->has_reconnect = true;
3583 backend->socket->reconnect = reconnect;
3585 addr = g_new0(SocketAddress, 1);
3587 addr->kind = SOCKET_ADDRESS_KIND_UNIX;
3588 addr->q_unix = g_new0(UnixSocketAddress, 1);
3589 addr->q_unix->path = g_strdup(path);
3591 addr->kind = SOCKET_ADDRESS_KIND_INET;
3592 addr->inet = g_new0(InetSocketAddress, 1);
3593 addr->inet->host = g_strdup(host);
3594 addr->inet->port = g_strdup(port);
3595 addr->inet->has_to = qemu_opt_get(opts, "to");
3596 addr->inet->to = qemu_opt_get_number(opts, "to", 0);
3597 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3598 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3599 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3600 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3602 backend->socket->addr = addr;
3605 static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3608 const char *host = qemu_opt_get(opts, "host");
3609 const char *port = qemu_opt_get(opts, "port");
3610 const char *localaddr = qemu_opt_get(opts, "localaddr");
3611 const char *localport = qemu_opt_get(opts, "localport");
3612 bool has_local = false;
3613 SocketAddress *addr;
3615 if (host == NULL || strlen(host) == 0) {
3618 if (port == NULL || strlen(port) == 0) {
3619 error_setg(errp, "chardev: udp: remote port not specified");
3622 if (localport == NULL || strlen(localport) == 0) {
3627 if (localaddr == NULL || strlen(localaddr) == 0) {
3633 backend->udp = g_new0(ChardevUdp, 1);
3635 addr = g_new0(SocketAddress, 1);
3636 addr->kind = SOCKET_ADDRESS_KIND_INET;
3637 addr->inet = g_new0(InetSocketAddress, 1);
3638 addr->inet->host = g_strdup(host);
3639 addr->inet->port = g_strdup(port);
3640 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3641 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3642 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3643 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3644 backend->udp->remote = addr;
3647 backend->udp->has_local = true;
3648 addr = g_new0(SocketAddress, 1);
3649 addr->kind = SOCKET_ADDRESS_KIND_INET;
3650 addr->inet = g_new0(InetSocketAddress, 1);
3651 addr->inet->host = g_strdup(localaddr);
3652 addr->inet->port = g_strdup(localport);
3653 backend->udp->local = addr;
3657 typedef struct CharDriver {
3659 ChardevBackendKind kind;
3660 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3661 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3662 ChardevReturn *ret, Error **errp);
3665 static GSList *backends;
3667 void register_char_driver(const char *name, ChardevBackendKind kind,
3668 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3669 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3670 ChardevReturn *ret, Error **errp))
3674 s = g_malloc0(sizeof(*s));
3675 s->name = g_strdup(name);
3680 backends = g_slist_append(backends, s);
3683 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3684 void (*init)(struct CharDriverState *s),
3687 Error *local_err = NULL;
3689 CharDriverState *chr;
3691 ChardevReturn *ret = NULL;
3692 ChardevBackend *backend;
3693 const char *id = qemu_opts_id(opts);
3697 error_setg(errp, "chardev: no id specified");
3701 if (qemu_opt_get(opts, "backend") == NULL) {
3702 error_setg(errp, "chardev: \"%s\" missing backend",
3703 qemu_opts_id(opts));
3706 for (i = backends; i; i = i->next) {
3709 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3714 error_setg(errp, "chardev: backend \"%s\" not found",
3715 qemu_opt_get(opts, "backend"));
3719 backend = g_new0(ChardevBackend, 1);
3721 if (qemu_opt_get_bool(opts, "mux", 0)) {
3722 bid = g_strdup_printf("%s-base", id);
3726 backend->kind = cd->kind;
3728 cd->parse(opts, backend, &local_err);
3730 error_propagate(errp, local_err);
3734 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3740 qapi_free_ChardevBackend(backend);
3741 qapi_free_ChardevReturn(ret);
3742 backend = g_new0(ChardevBackend, 1);
3743 backend->mux = g_new0(ChardevMux, 1);
3744 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3745 backend->mux->chardev = g_strdup(bid);
3746 ret = qmp_chardev_add(id, backend, errp);
3748 chr = qemu_chr_find(bid);
3749 qemu_chr_delete(chr);
3755 chr = qemu_chr_find(id);
3759 qapi_free_ChardevBackend(backend);
3760 qapi_free_ChardevReturn(ret);
3765 qemu_opts_del(opts);
3769 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3772 CharDriverState *chr;
3776 if (strstart(filename, "chardev:", &p)) {
3777 return qemu_chr_find(p);
3780 opts = qemu_chr_parse_compat(label, filename);
3784 chr = qemu_chr_new_from_opts(opts, init, &err);
3786 error_report_err(err);
3788 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3789 qemu_chr_fe_claim_no_fail(chr);
3790 monitor_init(chr, MONITOR_USE_READLINE);
3795 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3797 if (chr->chr_set_echo) {
3798 chr->chr_set_echo(chr, echo);
3802 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3804 if (chr->fe_open == fe_open) {
3807 chr->fe_open = fe_open;
3808 if (chr->chr_set_fe_open) {
3809 chr->chr_set_fe_open(chr, fe_open);
3813 void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3815 if (chr->chr_fe_event) {
3816 chr->chr_fe_event(chr, event);
3820 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3821 GIOFunc func, void *user_data)
3826 if (s->chr_add_watch == NULL) {
3830 src = s->chr_add_watch(s, cond);
3835 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3836 tag = g_source_attach(src, NULL);
3837 g_source_unref(src);
3842 int qemu_chr_fe_claim(CharDriverState *s)
3844 if (s->avail_connections < 1) {
3847 s->avail_connections--;
3851 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3853 if (qemu_chr_fe_claim(s) != 0) {
3854 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3855 __func__, s->label);
3860 void qemu_chr_fe_release(CharDriverState *s)
3862 s->avail_connections++;
3865 void qemu_chr_delete(CharDriverState *chr)
3867 QTAILQ_REMOVE(&chardevs, chr, next);
3868 if (chr->chr_close) {
3869 chr->chr_close(chr);
3871 g_free(chr->filename);
3873 qemu_opts_del(chr->opts);
3877 ChardevInfoList *qmp_query_chardev(Error **errp)
3879 ChardevInfoList *chr_list = NULL;
3880 CharDriverState *chr;
3882 QTAILQ_FOREACH(chr, &chardevs, next) {
3883 ChardevInfoList *info = g_malloc0(sizeof(*info));
3884 info->value = g_malloc0(sizeof(*info->value));
3885 info->value->label = g_strdup(chr->label);
3886 info->value->filename = g_strdup(chr->filename);
3887 info->value->frontend_open = chr->fe_open;
3889 info->next = chr_list;
3896 ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3898 ChardevBackendInfoList *backend_list = NULL;
3899 CharDriver *c = NULL;
3902 for (i = backends; i; i = i->next) {
3903 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3905 info->value = g_malloc0(sizeof(*info->value));
3906 info->value->name = g_strdup(c->name);
3908 info->next = backend_list;
3909 backend_list = info;
3912 return backend_list;
3915 CharDriverState *qemu_chr_find(const char *name)
3917 CharDriverState *chr;
3919 QTAILQ_FOREACH(chr, &chardevs, next) {
3920 if (strcmp(chr->label, name) != 0)
3927 /* Get a character (serial) device interface. */
3928 CharDriverState *qemu_char_get_next_serial(void)
3930 static int next_serial;
3931 CharDriverState *chr;
3933 /* FIXME: This function needs to go away: use chardev properties! */
3935 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3936 chr = serial_hds[next_serial++];
3937 qemu_chr_fe_claim_no_fail(chr);
3943 QemuOptsList qemu_chardev_opts = {
3945 .implied_opt_name = "backend",
3946 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3950 .type = QEMU_OPT_STRING,
3953 .type = QEMU_OPT_STRING,
3956 .type = QEMU_OPT_STRING,
3959 .type = QEMU_OPT_STRING,
3961 .name = "localaddr",
3962 .type = QEMU_OPT_STRING,
3964 .name = "localport",
3965 .type = QEMU_OPT_STRING,
3968 .type = QEMU_OPT_NUMBER,
3971 .type = QEMU_OPT_BOOL,
3974 .type = QEMU_OPT_BOOL,
3977 .type = QEMU_OPT_BOOL,
3980 .type = QEMU_OPT_BOOL,
3983 .type = QEMU_OPT_BOOL,
3985 .name = "reconnect",
3986 .type = QEMU_OPT_NUMBER,
3989 .type = QEMU_OPT_BOOL,
3992 .type = QEMU_OPT_NUMBER,
3995 .type = QEMU_OPT_NUMBER,
3998 .type = QEMU_OPT_NUMBER,
4001 .type = QEMU_OPT_NUMBER,
4004 .type = QEMU_OPT_BOOL,
4007 .type = QEMU_OPT_BOOL,
4010 .type = QEMU_OPT_STRING,
4013 .type = QEMU_OPT_NUMBER,
4016 .type = QEMU_OPT_SIZE,
4019 .type = QEMU_OPT_STRING,
4021 { /* end of list */ }
4027 static CharDriverState *qmp_chardev_open_file(const char *id,
4028 ChardevBackend *backend,
4032 ChardevFile *file = backend->file;
4036 error_setg(errp, "input file not supported");
4040 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4041 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4042 if (out == INVALID_HANDLE_VALUE) {
4043 error_setg(errp, "open %s failed", file->out);
4046 return qemu_chr_open_win_file(out);
4049 static CharDriverState *qmp_chardev_open_serial(const char *id,
4050 ChardevBackend *backend,
4054 ChardevHostdev *serial = backend->serial;
4055 return qemu_chr_open_win_path(serial->device, errp);
4060 static int qmp_chardev_open_file_source(char *src, int flags,
4065 TFR(fd = qemu_open(src, flags, 0666));
4067 error_setg_file_open(errp, errno, src);
4072 static CharDriverState *qmp_chardev_open_file(const char *id,
4073 ChardevBackend *backend,
4077 ChardevFile *file = backend->file;
4078 int flags, in = -1, out;
4080 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
4081 out = qmp_chardev_open_file_source(file->out, flags, errp);
4088 in = qmp_chardev_open_file_source(file->in, flags, errp);
4095 return qemu_chr_open_fd(in, out);
4098 #ifdef HAVE_CHARDEV_SERIAL
4099 static CharDriverState *qmp_chardev_open_serial(const char *id,
4100 ChardevBackend *backend,
4104 ChardevHostdev *serial = backend->serial;
4107 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
4111 qemu_set_nonblock(fd);
4112 return qemu_chr_open_tty_fd(fd);
4116 #ifdef HAVE_CHARDEV_PARPORT
4117 static CharDriverState *qmp_chardev_open_parallel(const char *id,
4118 ChardevBackend *backend,
4122 ChardevHostdev *parallel = backend->parallel;
4125 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
4129 return qemu_chr_open_pp_fd(fd, errp);
4135 static void socket_try_connect(CharDriverState *chr)
4139 if (!qemu_chr_open_socket_fd(chr, &err)) {
4140 check_report_connect_error(chr, err);
4144 static gboolean socket_reconnect_timeout(gpointer opaque)
4146 CharDriverState *chr = opaque;
4147 TCPCharDriver *s = chr->opaque;
4149 s->reconnect_timer = 0;
4155 socket_try_connect(chr);
4160 static CharDriverState *qmp_chardev_open_socket(const char *id,
4161 ChardevBackend *backend,
4165 CharDriverState *chr;
4167 ChardevSocket *sock = backend->socket;
4168 SocketAddress *addr = sock->addr;
4169 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4170 bool is_listen = sock->has_server ? sock->server : true;
4171 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4172 bool is_waitconnect = sock->has_wait ? sock->wait : false;
4173 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
4175 chr = qemu_chr_alloc();
4176 s = g_new0(TCPCharDriver, 1);
4180 s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
4181 s->is_listen = is_listen;
4182 s->is_telnet = is_telnet;
4183 s->do_nodelay = do_nodelay;
4184 qapi_copy_SocketAddress(&s->addr, sock->addr);
4187 chr->chr_write = tcp_chr_write;
4188 chr->chr_sync_read = tcp_chr_sync_read;
4189 chr->chr_close = tcp_chr_close;
4190 chr->get_msgfds = tcp_get_msgfds;
4191 chr->set_msgfds = tcp_set_msgfds;
4192 chr->chr_add_client = tcp_chr_add_client;
4193 chr->chr_add_watch = tcp_chr_add_watch;
4194 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4195 /* be isn't opened until we get a connection */
4196 chr->explicit_be_open = true;
4198 chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
4199 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
4200 addr, is_listen, is_telnet);
4204 s->do_telnetopt = 1;
4206 } else if (reconnect > 0) {
4207 s->reconnect_time = reconnect;
4210 if (s->reconnect_time) {
4211 socket_try_connect(chr);
4212 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
4214 g_free(chr->filename);
4219 if (is_listen && is_waitconnect) {
4220 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4222 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
4223 qemu_set_nonblock(s->listen_fd);
4229 static CharDriverState *qmp_chardev_open_udp(const char *id,
4230 ChardevBackend *backend,
4234 ChardevUdp *udp = backend->udp;
4237 fd = socket_dgram(udp->remote, udp->local, errp);
4241 return qemu_chr_open_udp_fd(fd);
4244 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4247 ChardevReturn *ret = g_new0(ChardevReturn, 1);
4248 CharDriverState *base, *chr = NULL;
4249 Error *local_err = NULL;
4253 chr = qemu_chr_find(id);
4255 error_setg(errp, "Chardev '%s' already exists", id);
4260 for (i = backends; i; i = i->next) {
4263 if (cd->kind == backend->kind && cd->create) {
4264 chr = cd->create(id, backend, ret, &local_err);
4266 error_propagate(errp, local_err);
4274 switch (backend->kind) {
4275 case CHARDEV_BACKEND_KIND_FILE:
4278 case CHARDEV_BACKEND_KIND_SERIAL:
4281 case CHARDEV_BACKEND_KIND_PARALLEL:
4284 case CHARDEV_BACKEND_KIND_PIPE:
4287 case CHARDEV_BACKEND_KIND_SOCKET:
4290 case CHARDEV_BACKEND_KIND_UDP:
4293 case CHARDEV_BACKEND_KIND_PTY:
4296 case CHARDEV_BACKEND_KIND_NULL:
4297 chr = qemu_chr_open_null();
4299 case CHARDEV_BACKEND_KIND_MUX:
4300 base = qemu_chr_find(backend->mux->chardev);
4302 error_setg(&local_err, "mux: base chardev %s not found",
4303 backend->mux->chardev);
4306 chr = qemu_chr_open_mux(base);
4308 case CHARDEV_BACKEND_KIND_MSMOUSE:
4309 chr = qemu_chr_open_msmouse();
4311 #ifdef CONFIG_BRLAPI
4312 case CHARDEV_BACKEND_KIND_BRAILLE:
4313 chr = chr_baum_init();
4316 case CHARDEV_BACKEND_KIND_TESTDEV:
4317 chr = chr_testdev_init();
4319 case CHARDEV_BACKEND_KIND_STDIO:
4320 chr = qemu_chr_open_stdio(backend->stdio);
4323 case CHARDEV_BACKEND_KIND_CONSOLE:
4324 chr = qemu_chr_open_win_con();
4328 case CHARDEV_BACKEND_KIND_SPICEVMC:
4329 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4331 case CHARDEV_BACKEND_KIND_SPICEPORT:
4332 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4335 case CHARDEV_BACKEND_KIND_VC:
4336 chr = vc_init(backend->vc);
4338 case CHARDEV_BACKEND_KIND_RINGBUF:
4339 case CHARDEV_BACKEND_KIND_MEMORY:
4340 chr = qemu_chr_open_ringbuf(backend->ringbuf, &local_err);
4343 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4348 * Character backend open hasn't been fully converted to the Error
4349 * API. Some opens fail without setting an error. Set a generic
4351 * TODO full conversion to Error API
4355 error_propagate(errp, local_err);
4357 error_setg(errp, "Failed to create chardev");
4363 chr->label = g_strdup(id);
4364 chr->avail_connections =
4365 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
4366 if (!chr->filename) {
4367 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4369 if (!chr->explicit_be_open) {
4370 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4372 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4380 void qmp_chardev_remove(const char *id, Error **errp)
4382 CharDriverState *chr;
4384 chr = qemu_chr_find(id);
4386 error_setg(errp, "Chardev '%s' not found", id);
4389 if (chr->chr_can_read || chr->chr_read ||
4390 chr->chr_event || chr->handler_opaque) {
4391 error_setg(errp, "Chardev '%s' is busy", id);
4394 qemu_chr_delete(chr);
4397 static void register_types(void)
4399 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
4401 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
4402 qemu_chr_parse_socket, qmp_chardev_open_socket);
4403 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
4404 qmp_chardev_open_udp);
4405 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4406 qemu_chr_parse_ringbuf, NULL);
4407 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
4408 qemu_chr_parse_file_out, qmp_chardev_open_file);
4409 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
4410 qemu_chr_parse_stdio, NULL);
4411 #if defined HAVE_CHARDEV_SERIAL
4412 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
4413 qemu_chr_parse_serial, qmp_chardev_open_serial);
4414 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
4415 qemu_chr_parse_serial, qmp_chardev_open_serial);
4417 #ifdef HAVE_CHARDEV_PARPORT
4418 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4419 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4420 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4421 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4423 #ifdef HAVE_CHARDEV_PTY
4424 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
4427 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
4429 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
4430 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4431 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
4433 /* Bug-compatibility: */
4434 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
4435 qemu_chr_parse_ringbuf, NULL);
4436 /* this must be done after machine init, since we register FEs with muxes
4437 * as part of realize functions like serial_isa_realizefn when -nographic
4440 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
4443 type_init(register_types);