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 */
96 static int SocketAddress_to_str(char *dest, int max_len,
97 const char *prefix, SocketAddress *addr,
98 bool is_listen, bool is_telnet)
100 switch (addr->type) {
101 case SOCKET_ADDRESS_KIND_INET:
102 return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
103 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
104 addr->u.inet->port, is_listen ? ",server" : "");
106 case SOCKET_ADDRESS_KIND_UNIX:
107 return snprintf(dest, max_len, "%sunix:%s%s", prefix,
108 addr->u.q_unix->path, is_listen ? ",server" : "");
110 case SOCKET_ADDRESS_KIND_FD:
111 return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->u.fd->str,
112 is_listen ? ",server" : "");
119 static int sockaddr_to_str(char *dest, int max_len,
120 struct sockaddr_storage *ss, socklen_t ss_len,
121 struct sockaddr_storage *ps, socklen_t ps_len,
122 bool is_listen, bool is_telnet)
124 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
125 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
126 const char *left = "", *right = "";
128 switch (ss->ss_family) {
131 return snprintf(dest, max_len, "unix:%s%s",
132 ((struct sockaddr_un *)(ss))->sun_path,
133 is_listen ? ",server" : "");
140 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
141 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
142 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
143 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
144 return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
145 is_telnet ? "telnet" : "tcp",
146 left, shost, right, sserv,
147 is_listen ? ",server" : "",
148 left, phost, right, pserv);
151 return snprintf(dest, max_len, "unknown");
155 /***********************************************************/
156 /* character device */
158 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
159 QTAILQ_HEAD_INITIALIZER(chardevs);
161 CharDriverState *qemu_chr_alloc(void)
163 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
164 qemu_mutex_init(&chr->chr_write_lock);
168 void qemu_chr_be_event(CharDriverState *s, int event)
170 /* Keep track if the char device is open */
172 case CHR_EVENT_OPENED:
175 case CHR_EVENT_CLOSED:
182 s->chr_event(s->handler_opaque, event);
185 void qemu_chr_be_generic_open(CharDriverState *s)
187 qemu_chr_be_event(s, CHR_EVENT_OPENED);
190 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
194 qemu_mutex_lock(&s->chr_write_lock);
195 ret = s->chr_write(s, buf, len);
196 qemu_mutex_unlock(&s->chr_write_lock);
200 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
205 qemu_mutex_lock(&s->chr_write_lock);
206 while (offset < len) {
208 res = s->chr_write(s, buf + offset, len - offset);
209 if (res == -1 && errno == EAGAIN) {
212 } while (res == -1 && errno == EAGAIN);
220 qemu_mutex_unlock(&s->chr_write_lock);
228 int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
230 int offset = 0, counter = 10;
233 if (!s->chr_sync_read) {
237 while (offset < len) {
239 res = s->chr_sync_read(s, buf + offset, len - offset);
240 if (res == -1 && errno == EAGAIN) {
243 } while (res == -1 && errno == EAGAIN);
263 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
267 return s->chr_ioctl(s, cmd, arg);
270 int qemu_chr_be_can_write(CharDriverState *s)
272 if (!s->chr_can_read)
274 return s->chr_can_read(s->handler_opaque);
277 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
280 s->chr_read(s->handler_opaque, buf, len);
284 int qemu_chr_fe_get_msgfd(CharDriverState *s)
287 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
290 int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
292 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
295 int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
297 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
300 int qemu_chr_add_client(CharDriverState *s, int fd)
302 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
305 void qemu_chr_accept_input(CharDriverState *s)
307 if (s->chr_accept_input)
308 s->chr_accept_input(s);
312 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
314 char buf[READ_BUF_LEN];
317 vsnprintf(buf, sizeof(buf), fmt, ap);
318 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
322 static void remove_fd_in_watch(CharDriverState *chr);
324 void qemu_chr_add_handlers(CharDriverState *s,
325 IOCanReadHandler *fd_can_read,
326 IOReadHandler *fd_read,
327 IOEventHandler *fd_event,
332 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
334 remove_fd_in_watch(s);
338 s->chr_can_read = fd_can_read;
339 s->chr_read = fd_read;
340 s->chr_event = fd_event;
341 s->handler_opaque = opaque;
342 if (fe_open && s->chr_update_read_handler)
343 s->chr_update_read_handler(s);
345 if (!s->explicit_fe_open) {
346 qemu_chr_fe_set_open(s, fe_open);
349 /* We're connecting to an already opened device, so let's make sure we
350 also get the open event */
351 if (fe_open && s->be_open) {
352 qemu_chr_be_generic_open(s);
356 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
361 static CharDriverState *qemu_chr_open_null(const char *id,
362 ChardevBackend *backend,
366 CharDriverState *chr;
368 chr = qemu_chr_alloc();
369 chr->chr_write = null_chr_write;
370 chr->explicit_be_open = true;
374 /* MUX driver for serial I/O splitting */
376 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
377 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
379 IOCanReadHandler *chr_can_read[MAX_MUX];
380 IOReadHandler *chr_read[MAX_MUX];
381 IOEventHandler *chr_event[MAX_MUX];
382 void *ext_opaque[MAX_MUX];
383 CharDriverState *drv;
388 /* Intermediate input buffer allows to catch escape sequences even if the
389 currently active device is not accepting any input - but only until it
391 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
396 /* Protected by the CharDriverState chr_write_lock. */
398 int64_t timestamps_start;
402 /* Called with chr_write_lock held. */
403 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
405 MuxDriver *d = chr->opaque;
407 if (!d->timestamps) {
408 ret = qemu_chr_fe_write(d->drv, buf, len);
413 for (i = 0; i < len; i++) {
419 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
420 if (d->timestamps_start == -1)
421 d->timestamps_start = ti;
422 ti -= d->timestamps_start;
424 snprintf(buf1, sizeof(buf1),
425 "[%02d:%02d:%02d.%03d] ",
430 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
433 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
434 if (buf[i] == '\n') {
442 static const char * const mux_help[] = {
443 "% h print this help\n\r",
444 "% x exit emulator\n\r",
445 "% s save disk data back to file (if -snapshot)\n\r",
446 "% t toggle console timestamps\n\r",
447 "% b send break (magic sysrq)\n\r",
448 "% c switch between console and monitor\n\r",
453 int term_escape_char = 0x01; /* ctrl-a is used for escape */
454 static void mux_print_help(CharDriverState *chr)
457 char ebuf[15] = "Escape-Char";
458 char cbuf[50] = "\n\r";
460 if (term_escape_char > 0 && term_escape_char < 26) {
461 snprintf(cbuf, sizeof(cbuf), "\n\r");
462 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
464 snprintf(cbuf, sizeof(cbuf),
465 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
468 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
469 for (i = 0; mux_help[i] != NULL; i++) {
470 for (j=0; mux_help[i][j] != '\0'; j++) {
471 if (mux_help[i][j] == '%')
472 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
474 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
479 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
481 if (d->chr_event[mux_nr])
482 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
485 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
487 if (d->term_got_escape) {
488 d->term_got_escape = 0;
489 if (ch == term_escape_char)
498 const char *term = "QEMU: Terminated\n\r";
499 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
507 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
510 /* Switch to the next registered device */
511 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
513 if (d->focus >= d->mux_cnt)
515 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
518 d->timestamps = !d->timestamps;
519 d->timestamps_start = -1;
523 } else if (ch == term_escape_char) {
524 d->term_got_escape = 1;
532 static void mux_chr_accept_input(CharDriverState *chr)
534 MuxDriver *d = chr->opaque;
537 while (d->prod[m] != d->cons[m] &&
538 d->chr_can_read[m] &&
539 d->chr_can_read[m](d->ext_opaque[m])) {
540 d->chr_read[m](d->ext_opaque[m],
541 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
545 static int mux_chr_can_read(void *opaque)
547 CharDriverState *chr = opaque;
548 MuxDriver *d = chr->opaque;
551 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
553 if (d->chr_can_read[m])
554 return d->chr_can_read[m](d->ext_opaque[m]);
558 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
560 CharDriverState *chr = opaque;
561 MuxDriver *d = chr->opaque;
565 mux_chr_accept_input (opaque);
567 for(i = 0; i < size; i++)
568 if (mux_proc_byte(chr, d, buf[i])) {
569 if (d->prod[m] == d->cons[m] &&
570 d->chr_can_read[m] &&
571 d->chr_can_read[m](d->ext_opaque[m]))
572 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
574 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
578 static void mux_chr_event(void *opaque, int event)
580 CharDriverState *chr = opaque;
581 MuxDriver *d = chr->opaque;
584 /* Send the event to all registered listeners */
585 for (i = 0; i < d->mux_cnt; i++)
586 mux_chr_send_event(d, i, event);
589 static void mux_chr_update_read_handler(CharDriverState *chr)
591 MuxDriver *d = chr->opaque;
593 if (d->mux_cnt >= MAX_MUX) {
594 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
597 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
598 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
599 d->chr_read[d->mux_cnt] = chr->chr_read;
600 d->chr_event[d->mux_cnt] = chr->chr_event;
601 /* Fix up the real driver with mux routines */
602 if (d->mux_cnt == 0) {
603 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
606 if (d->focus != -1) {
607 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
609 d->focus = d->mux_cnt;
611 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
614 static bool muxes_realized;
617 * Called after processing of default and command-line-specified
618 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
619 * to a mux chardev. This is done here to ensure that
620 * output/prompts/banners are only displayed for the FE that has
621 * focus when initial command-line processing/machine init is
624 * After this point, any new FE attached to any new or existing
625 * mux will receive CHR_EVENT_OPENED notifications for the BE
628 static void muxes_realize_done(Notifier *notifier, void *unused)
630 CharDriverState *chr;
632 QTAILQ_FOREACH(chr, &chardevs, next) {
634 MuxDriver *d = chr->opaque;
637 /* send OPENED to all already-attached FEs */
638 for (i = 0; i < d->mux_cnt; i++) {
639 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
641 /* mark mux as OPENED so any new FEs will immediately receive
644 qemu_chr_be_generic_open(chr);
647 muxes_realized = true;
650 static Notifier muxes_realize_notify = {
651 .notify = muxes_realize_done,
654 static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
656 MuxDriver *d = s->opaque;
657 return d->drv->chr_add_watch(d->drv, cond);
660 static CharDriverState *qemu_chr_open_mux(const char *id,
661 ChardevBackend *backend,
662 ChardevReturn *ret, Error **errp)
664 ChardevMux *mux = backend->u.mux;
665 CharDriverState *chr, *drv;
668 drv = qemu_chr_find(mux->chardev);
670 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
674 chr = qemu_chr_alloc();
675 d = g_new0(MuxDriver, 1);
680 chr->chr_write = mux_chr_write;
681 chr->chr_update_read_handler = mux_chr_update_read_handler;
682 chr->chr_accept_input = mux_chr_accept_input;
683 /* Frontend guest-open / -close notification is not support with muxes */
684 chr->chr_set_fe_open = NULL;
685 if (drv->chr_add_watch) {
686 chr->chr_add_watch = mux_chr_add_watch;
688 /* only default to opened state if we've realized the initial
691 chr->explicit_be_open = muxes_realized ? 0 : 1;
699 int send_all(int fd, const void *buf, int len1)
705 ret = send(fd, buf, len, 0);
707 errno = WSAGetLastError();
708 if (errno != WSAEWOULDBLOCK) {
711 } else if (ret == 0) {
723 int send_all(int fd, const void *_buf, int len1)
726 const uint8_t *buf = _buf;
730 ret = write(fd, buf, len);
732 if (errno != EINTR && errno != EAGAIN)
734 } else if (ret == 0) {
744 int recv_all(int fd, void *_buf, int len1, bool single_read)
750 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
752 if (errno != EINTR && errno != EAGAIN) {
769 typedef struct IOWatchPoll
776 IOCanReadHandler *fd_can_read;
781 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
783 return container_of(source, IOWatchPoll, parent);
786 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
788 IOWatchPoll *iwp = io_watch_poll_from_source(source);
789 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
790 bool was_active = iwp->src != NULL;
791 if (was_active == now_active) {
796 iwp->src = g_io_create_watch(iwp->channel,
797 G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
798 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
799 g_source_attach(iwp->src, NULL);
801 g_source_destroy(iwp->src);
802 g_source_unref(iwp->src);
808 static gboolean io_watch_poll_check(GSource *source)
813 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
819 static void io_watch_poll_finalize(GSource *source)
821 /* Due to a glib bug, removing the last reference to a source
822 * inside a finalize callback causes recursive locking (and a
823 * deadlock). This is not a problem inside other callbacks,
824 * including dispatch callbacks, so we call io_remove_watch_poll
825 * to remove this source. At this point, iwp->src must
826 * be NULL, or we would leak it.
828 * This would be solved much more elegantly by child sources,
829 * but we support older glib versions that do not have them.
831 IOWatchPoll *iwp = io_watch_poll_from_source(source);
832 assert(iwp->src == NULL);
835 static GSourceFuncs io_watch_poll_funcs = {
836 .prepare = io_watch_poll_prepare,
837 .check = io_watch_poll_check,
838 .dispatch = io_watch_poll_dispatch,
839 .finalize = io_watch_poll_finalize,
842 /* Can only be used for read */
843 static guint io_add_watch_poll(GIOChannel *channel,
844 IOCanReadHandler *fd_can_read,
851 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
852 iwp->fd_can_read = fd_can_read;
853 iwp->opaque = user_data;
854 iwp->channel = channel;
855 iwp->fd_read = (GSourceFunc) fd_read;
858 tag = g_source_attach(&iwp->parent, NULL);
859 g_source_unref(&iwp->parent);
863 static void io_remove_watch_poll(guint tag)
868 g_return_if_fail (tag > 0);
870 source = g_main_context_find_source_by_id(NULL, tag);
871 g_return_if_fail (source != NULL);
873 iwp = io_watch_poll_from_source(source);
875 g_source_destroy(iwp->src);
876 g_source_unref(iwp->src);
879 g_source_destroy(&iwp->parent);
882 static void remove_fd_in_watch(CharDriverState *chr)
884 if (chr->fd_in_tag) {
885 io_remove_watch_poll(chr->fd_in_tag);
891 static GIOChannel *io_channel_from_fd(int fd)
899 chan = g_io_channel_unix_new(fd);
901 g_io_channel_set_encoding(chan, NULL, NULL);
902 g_io_channel_set_buffered(chan, FALSE);
908 static GIOChannel *io_channel_from_socket(int fd)
917 chan = g_io_channel_win32_new_socket(fd);
919 chan = g_io_channel_unix_new(fd);
922 g_io_channel_set_encoding(chan, NULL, NULL);
923 g_io_channel_set_buffered(chan, FALSE);
928 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
931 GIOStatus status = G_IO_STATUS_NORMAL;
933 while (offset < len && status == G_IO_STATUS_NORMAL) {
934 gsize bytes_written = 0;
936 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
937 &bytes_written, NULL);
938 offset += bytes_written;
945 case G_IO_STATUS_NORMAL:
948 case G_IO_STATUS_AGAIN:
960 typedef struct FDCharDriver {
961 CharDriverState *chr;
962 GIOChannel *fd_in, *fd_out;
966 /* Called with chr_write_lock held. */
967 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
969 FDCharDriver *s = chr->opaque;
971 return io_channel_send(s->fd_out, buf, len);
974 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
976 CharDriverState *chr = opaque;
977 FDCharDriver *s = chr->opaque;
979 uint8_t buf[READ_BUF_LEN];
984 if (len > s->max_size) {
991 status = g_io_channel_read_chars(chan, (gchar *)buf,
992 len, &bytes_read, NULL);
993 if (status == G_IO_STATUS_EOF) {
994 remove_fd_in_watch(chr);
995 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
998 if (status == G_IO_STATUS_NORMAL) {
999 qemu_chr_be_write(chr, buf, bytes_read);
1005 static int fd_chr_read_poll(void *opaque)
1007 CharDriverState *chr = opaque;
1008 FDCharDriver *s = chr->opaque;
1010 s->max_size = qemu_chr_be_can_write(chr);
1014 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1016 FDCharDriver *s = chr->opaque;
1017 return g_io_create_watch(s->fd_out, cond);
1020 static void fd_chr_update_read_handler(CharDriverState *chr)
1022 FDCharDriver *s = chr->opaque;
1024 remove_fd_in_watch(chr);
1026 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
1031 static void fd_chr_close(struct CharDriverState *chr)
1033 FDCharDriver *s = chr->opaque;
1035 remove_fd_in_watch(chr);
1037 g_io_channel_unref(s->fd_in);
1040 g_io_channel_unref(s->fd_out);
1044 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1047 /* open a character device to a unix fd */
1048 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
1050 CharDriverState *chr;
1053 chr = qemu_chr_alloc();
1054 s = g_new0(FDCharDriver, 1);
1055 s->fd_in = io_channel_from_fd(fd_in);
1056 s->fd_out = io_channel_from_fd(fd_out);
1057 qemu_set_nonblock(fd_out);
1060 chr->chr_add_watch = fd_chr_add_watch;
1061 chr->chr_write = fd_chr_write;
1062 chr->chr_update_read_handler = fd_chr_update_read_handler;
1063 chr->chr_close = fd_chr_close;
1068 static CharDriverState *qemu_chr_open_pipe(const char *id,
1069 ChardevBackend *backend,
1073 ChardevHostdev *opts = backend->u.pipe;
1075 char filename_in[CHR_MAX_FILENAME_SIZE];
1076 char filename_out[CHR_MAX_FILENAME_SIZE];
1077 const char *filename = opts->device;
1079 snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
1080 snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename);
1081 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1082 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
1083 if (fd_in < 0 || fd_out < 0) {
1088 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
1090 error_setg_file_open(errp, errno, filename);
1094 return qemu_chr_open_fd(fd_in, fd_out);
1097 /* init terminal so that we can grab keys */
1098 static struct termios oldtty;
1099 static int old_fd0_flags;
1100 static bool stdio_in_use;
1101 static bool stdio_allow_signal;
1102 static bool stdio_echo_state;
1104 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
1106 static void term_exit(void)
1108 tcsetattr (0, TCSANOW, &oldtty);
1109 fcntl(0, F_SETFL, old_fd0_flags);
1112 static void term_stdio_handler(int sig)
1114 /* restore echo after resume from suspend. */
1115 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1118 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
1122 stdio_echo_state = echo;
1125 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1126 |INLCR|IGNCR|ICRNL|IXON);
1127 tty.c_oflag |= OPOST;
1128 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1129 tty.c_cflag &= ~(CSIZE|PARENB);
1132 tty.c_cc[VTIME] = 0;
1134 if (!stdio_allow_signal)
1135 tty.c_lflag &= ~ISIG;
1137 tcsetattr (0, TCSANOW, &tty);
1140 static void qemu_chr_close_stdio(struct CharDriverState *chr)
1146 static CharDriverState *qemu_chr_open_stdio(const char *id,
1147 ChardevBackend *backend,
1151 ChardevStdio *opts = backend->u.stdio;
1152 CharDriverState *chr;
1153 struct sigaction act;
1155 if (is_daemonized()) {
1156 error_setg(errp, "cannot use stdio with -daemonize");
1161 error_setg(errp, "cannot use stdio by multiple character devices");
1165 stdio_in_use = true;
1166 old_fd0_flags = fcntl(0, F_GETFL);
1167 tcgetattr(0, &oldtty);
1168 qemu_set_nonblock(0);
1171 memset(&act, 0, sizeof(act));
1172 act.sa_handler = term_stdio_handler;
1173 sigaction(SIGCONT, &act, NULL);
1175 chr = qemu_chr_open_fd(0, 1);
1176 chr->chr_close = qemu_chr_close_stdio;
1177 chr->chr_set_echo = qemu_chr_set_echo_stdio;
1178 if (opts->has_signal) {
1179 stdio_allow_signal = opts->signal;
1181 qemu_chr_fe_set_echo(chr, false);
1186 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1187 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1188 || defined(__GLIBC__)
1190 #define HAVE_CHARDEV_SERIAL 1
1191 #define HAVE_CHARDEV_PTY 1
1197 /* Protected by the CharDriverState chr_write_lock. */
1203 static void pty_chr_update_read_handler_locked(CharDriverState *chr);
1204 static void pty_chr_state(CharDriverState *chr, int connected);
1206 static gboolean pty_chr_timer(gpointer opaque)
1208 struct CharDriverState *chr = opaque;
1209 PtyCharDriver *s = chr->opaque;
1211 qemu_mutex_lock(&chr->chr_write_lock);
1214 if (!s->connected) {
1216 pty_chr_update_read_handler_locked(chr);
1218 qemu_mutex_unlock(&chr->chr_write_lock);
1222 /* Called with chr_write_lock held. */
1223 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1225 PtyCharDriver *s = chr->opaque;
1228 g_source_remove(s->timer_tag);
1233 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1235 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1239 /* Called with chr_write_lock held. */
1240 static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1242 PtyCharDriver *s = chr->opaque;
1246 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1247 pfd.events = G_IO_OUT;
1250 rc = g_poll(&pfd, 1, 0);
1251 } while (rc == -1 && errno == EINTR);
1254 if (pfd.revents & G_IO_HUP) {
1255 pty_chr_state(chr, 0);
1257 pty_chr_state(chr, 1);
1261 static void pty_chr_update_read_handler(CharDriverState *chr)
1263 qemu_mutex_lock(&chr->chr_write_lock);
1264 pty_chr_update_read_handler_locked(chr);
1265 qemu_mutex_unlock(&chr->chr_write_lock);
1268 /* Called with chr_write_lock held. */
1269 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1271 PtyCharDriver *s = chr->opaque;
1273 if (!s->connected) {
1274 /* guest sends data, check for (re-)connect */
1275 pty_chr_update_read_handler_locked(chr);
1276 if (!s->connected) {
1280 return io_channel_send(s->fd, buf, len);
1283 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1285 PtyCharDriver *s = chr->opaque;
1286 if (!s->connected) {
1289 return g_io_create_watch(s->fd, cond);
1292 static int pty_chr_read_poll(void *opaque)
1294 CharDriverState *chr = opaque;
1295 PtyCharDriver *s = chr->opaque;
1297 s->read_bytes = qemu_chr_be_can_write(chr);
1298 return s->read_bytes;
1301 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1303 CharDriverState *chr = opaque;
1304 PtyCharDriver *s = chr->opaque;
1306 uint8_t buf[READ_BUF_LEN];
1310 if (len > s->read_bytes)
1311 len = s->read_bytes;
1315 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1316 if (status != G_IO_STATUS_NORMAL) {
1317 pty_chr_state(chr, 0);
1320 pty_chr_state(chr, 1);
1321 qemu_chr_be_write(chr, buf, size);
1326 static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1328 CharDriverState *chr = opaque;
1329 PtyCharDriver *s = chr->opaque;
1332 qemu_chr_be_generic_open(chr);
1336 /* Called with chr_write_lock held. */
1337 static void pty_chr_state(CharDriverState *chr, int connected)
1339 PtyCharDriver *s = chr->opaque;
1343 g_source_remove(s->open_tag);
1346 remove_fd_in_watch(chr);
1348 /* (re-)connect poll interval for idle guests: once per second.
1349 * We check more frequently in case the guests sends data to
1350 * the virtual device linked to our pty. */
1351 pty_chr_rearm_timer(chr, 1000);
1354 g_source_remove(s->timer_tag);
1357 if (!s->connected) {
1358 g_assert(s->open_tag == 0);
1360 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
1362 if (!chr->fd_in_tag) {
1363 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1369 static void pty_chr_close(struct CharDriverState *chr)
1371 PtyCharDriver *s = chr->opaque;
1374 qemu_mutex_lock(&chr->chr_write_lock);
1375 pty_chr_state(chr, 0);
1376 fd = g_io_channel_unix_get_fd(s->fd);
1377 g_io_channel_unref(s->fd);
1380 g_source_remove(s->timer_tag);
1383 qemu_mutex_unlock(&chr->chr_write_lock);
1385 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1388 static CharDriverState *qemu_chr_open_pty(const char *id,
1389 ChardevBackend *backend,
1393 CharDriverState *chr;
1395 int master_fd, slave_fd;
1396 char pty_name[PATH_MAX];
1398 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1399 if (master_fd < 0) {
1400 error_setg_errno(errp, errno, "Failed to create PTY");
1405 qemu_set_nonblock(master_fd);
1407 chr = qemu_chr_alloc();
1409 chr->filename = g_strdup_printf("pty:%s", pty_name);
1410 ret->pty = g_strdup(pty_name);
1411 ret->has_pty = true;
1413 fprintf(stderr, "char device redirected to %s (label %s)\n",
1416 s = g_new0(PtyCharDriver, 1);
1418 chr->chr_write = pty_chr_write;
1419 chr->chr_update_read_handler = pty_chr_update_read_handler;
1420 chr->chr_close = pty_chr_close;
1421 chr->chr_add_watch = pty_chr_add_watch;
1422 chr->explicit_be_open = true;
1424 s->fd = io_channel_from_fd(master_fd);
1430 static void tty_serial_init(int fd, int speed,
1431 int parity, int data_bits, int stop_bits)
1437 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1438 speed, parity, data_bits, stop_bits);
1440 tcgetattr (fd, &tty);
1442 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1443 speed = speed * 10 / 11;
1460 /* Non-Posix values follow. They may be unsupported on some systems. */
1462 check_speed(115200);
1464 check_speed(230400);
1467 check_speed(460800);
1470 check_speed(500000);
1473 check_speed(576000);
1476 check_speed(921600);
1479 check_speed(1000000);
1482 check_speed(1152000);
1485 check_speed(1500000);
1488 check_speed(2000000);
1491 check_speed(2500000);
1494 check_speed(3000000);
1497 check_speed(3500000);
1500 check_speed(4000000);
1505 cfsetispeed(&tty, spd);
1506 cfsetospeed(&tty, spd);
1508 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1509 |INLCR|IGNCR|ICRNL|IXON);
1510 tty.c_oflag |= OPOST;
1511 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1512 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1533 tty.c_cflag |= PARENB;
1536 tty.c_cflag |= PARENB | PARODD;
1540 tty.c_cflag |= CSTOPB;
1542 tcsetattr (fd, TCSANOW, &tty);
1545 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1547 FDCharDriver *s = chr->opaque;
1550 case CHR_IOCTL_SERIAL_SET_PARAMS:
1552 QEMUSerialSetParams *ssp = arg;
1553 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1554 ssp->speed, ssp->parity,
1555 ssp->data_bits, ssp->stop_bits);
1558 case CHR_IOCTL_SERIAL_SET_BREAK:
1560 int enable = *(int *)arg;
1562 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1566 case CHR_IOCTL_SERIAL_GET_TIOCM:
1569 int *targ = (int *)arg;
1570 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1572 if (sarg & TIOCM_CTS)
1573 *targ |= CHR_TIOCM_CTS;
1574 if (sarg & TIOCM_CAR)
1575 *targ |= CHR_TIOCM_CAR;
1576 if (sarg & TIOCM_DSR)
1577 *targ |= CHR_TIOCM_DSR;
1578 if (sarg & TIOCM_RI)
1579 *targ |= CHR_TIOCM_RI;
1580 if (sarg & TIOCM_DTR)
1581 *targ |= CHR_TIOCM_DTR;
1582 if (sarg & TIOCM_RTS)
1583 *targ |= CHR_TIOCM_RTS;
1586 case CHR_IOCTL_SERIAL_SET_TIOCM:
1588 int sarg = *(int *)arg;
1590 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1591 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1592 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1593 if (sarg & CHR_TIOCM_CTS)
1595 if (sarg & CHR_TIOCM_CAR)
1597 if (sarg & CHR_TIOCM_DSR)
1599 if (sarg & CHR_TIOCM_RI)
1601 if (sarg & CHR_TIOCM_DTR)
1603 if (sarg & CHR_TIOCM_RTS)
1605 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1614 static void qemu_chr_close_tty(CharDriverState *chr)
1616 FDCharDriver *s = chr->opaque;
1620 fd = g_io_channel_unix_get_fd(s->fd_in);
1630 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1632 CharDriverState *chr;
1634 tty_serial_init(fd, 115200, 'N', 8, 1);
1635 chr = qemu_chr_open_fd(fd, fd);
1636 chr->chr_ioctl = tty_serial_ioctl;
1637 chr->chr_close = qemu_chr_close_tty;
1640 #endif /* __linux__ || __sun__ */
1642 #if defined(__linux__)
1644 #define HAVE_CHARDEV_PARPORT 1
1649 } ParallelCharDriver;
1651 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1653 if (s->mode != mode) {
1655 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1662 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1664 ParallelCharDriver *drv = chr->opaque;
1669 case CHR_IOCTL_PP_READ_DATA:
1670 if (ioctl(fd, PPRDATA, &b) < 0)
1672 *(uint8_t *)arg = b;
1674 case CHR_IOCTL_PP_WRITE_DATA:
1675 b = *(uint8_t *)arg;
1676 if (ioctl(fd, PPWDATA, &b) < 0)
1679 case CHR_IOCTL_PP_READ_CONTROL:
1680 if (ioctl(fd, PPRCONTROL, &b) < 0)
1682 /* Linux gives only the lowest bits, and no way to know data
1683 direction! For better compatibility set the fixed upper
1685 *(uint8_t *)arg = b | 0xc0;
1687 case CHR_IOCTL_PP_WRITE_CONTROL:
1688 b = *(uint8_t *)arg;
1689 if (ioctl(fd, PPWCONTROL, &b) < 0)
1692 case CHR_IOCTL_PP_READ_STATUS:
1693 if (ioctl(fd, PPRSTATUS, &b) < 0)
1695 *(uint8_t *)arg = b;
1697 case CHR_IOCTL_PP_DATA_DIR:
1698 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1701 case CHR_IOCTL_PP_EPP_READ_ADDR:
1702 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1703 struct ParallelIOArg *parg = arg;
1704 int n = read(fd, parg->buffer, parg->count);
1705 if (n != parg->count) {
1710 case CHR_IOCTL_PP_EPP_READ:
1711 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1712 struct ParallelIOArg *parg = arg;
1713 int n = read(fd, parg->buffer, parg->count);
1714 if (n != parg->count) {
1719 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1720 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1721 struct ParallelIOArg *parg = arg;
1722 int n = write(fd, parg->buffer, parg->count);
1723 if (n != parg->count) {
1728 case CHR_IOCTL_PP_EPP_WRITE:
1729 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1730 struct ParallelIOArg *parg = arg;
1731 int n = write(fd, parg->buffer, parg->count);
1732 if (n != parg->count) {
1743 static void pp_close(CharDriverState *chr)
1745 ParallelCharDriver *drv = chr->opaque;
1748 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1749 ioctl(fd, PPRELEASE);
1752 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1755 static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp)
1757 CharDriverState *chr;
1758 ParallelCharDriver *drv;
1760 if (ioctl(fd, PPCLAIM) < 0) {
1761 error_setg_errno(errp, errno, "not a parallel port");
1766 drv = g_new0(ParallelCharDriver, 1);
1768 drv->mode = IEEE1284_MODE_COMPAT;
1770 chr = qemu_chr_alloc();
1771 chr->chr_write = null_chr_write;
1772 chr->chr_ioctl = pp_ioctl;
1773 chr->chr_close = pp_close;
1778 #endif /* __linux__ */
1780 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1782 #define HAVE_CHARDEV_PARPORT 1
1784 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1786 int fd = (int)(intptr_t)chr->opaque;
1790 case CHR_IOCTL_PP_READ_DATA:
1791 if (ioctl(fd, PPIGDATA, &b) < 0)
1793 *(uint8_t *)arg = b;
1795 case CHR_IOCTL_PP_WRITE_DATA:
1796 b = *(uint8_t *)arg;
1797 if (ioctl(fd, PPISDATA, &b) < 0)
1800 case CHR_IOCTL_PP_READ_CONTROL:
1801 if (ioctl(fd, PPIGCTRL, &b) < 0)
1803 *(uint8_t *)arg = b;
1805 case CHR_IOCTL_PP_WRITE_CONTROL:
1806 b = *(uint8_t *)arg;
1807 if (ioctl(fd, PPISCTRL, &b) < 0)
1810 case CHR_IOCTL_PP_READ_STATUS:
1811 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1813 *(uint8_t *)arg = b;
1821 static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp)
1823 CharDriverState *chr;
1825 chr = qemu_chr_alloc();
1826 chr->opaque = (void *)(intptr_t)fd;
1827 chr->chr_write = null_chr_write;
1828 chr->chr_ioctl = pp_ioctl;
1829 chr->explicit_be_open = true;
1836 #define HAVE_CHARDEV_SERIAL 1
1840 HANDLE hcom, hrecv, hsend;
1845 /* Protected by the CharDriverState chr_write_lock. */
1851 HANDLE hInputReadyEvent;
1852 HANDLE hInputDoneEvent;
1853 HANDLE hInputThread;
1854 uint8_t win_stdio_buf;
1855 } WinStdioCharState;
1857 #define NSENDBUF 2048
1858 #define NRECVBUF 2048
1859 #define MAXCONNECT 1
1860 #define NTIMEOUT 5000
1862 static int win_chr_poll(void *opaque);
1863 static int win_chr_pipe_poll(void *opaque);
1865 static void win_chr_close(CharDriverState *chr)
1867 WinCharState *s = chr->opaque;
1870 CloseHandle(s->hsend);
1874 CloseHandle(s->hrecv);
1878 CloseHandle(s->hcom);
1882 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1884 qemu_del_polling_cb(win_chr_poll, chr);
1886 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1889 static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
1891 WinCharState *s = chr->opaque;
1893 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1898 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1900 error_setg(errp, "Failed CreateEvent");
1903 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1905 error_setg(errp, "Failed CreateEvent");
1909 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1910 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1911 if (s->hcom == INVALID_HANDLE_VALUE) {
1912 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
1917 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1918 error_setg(errp, "Failed SetupComm");
1922 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1923 size = sizeof(COMMCONFIG);
1924 GetDefaultCommConfig(filename, &comcfg, &size);
1925 comcfg.dcb.DCBlength = sizeof(DCB);
1926 CommConfigDialog(filename, NULL, &comcfg);
1928 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1929 error_setg(errp, "Failed SetCommState");
1933 if (!SetCommMask(s->hcom, EV_ERR)) {
1934 error_setg(errp, "Failed SetCommMask");
1938 cto.ReadIntervalTimeout = MAXDWORD;
1939 if (!SetCommTimeouts(s->hcom, &cto)) {
1940 error_setg(errp, "Failed SetCommTimeouts");
1944 if (!ClearCommError(s->hcom, &err, &comstat)) {
1945 error_setg(errp, "Failed ClearCommError");
1948 qemu_add_polling_cb(win_chr_poll, chr);
1956 /* Called with chr_write_lock held. */
1957 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1959 WinCharState *s = chr->opaque;
1960 DWORD len, ret, size, err;
1963 ZeroMemory(&s->osend, sizeof(s->osend));
1964 s->osend.hEvent = s->hsend;
1967 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1969 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1971 err = GetLastError();
1972 if (err == ERROR_IO_PENDING) {
1973 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1991 static int win_chr_read_poll(CharDriverState *chr)
1993 WinCharState *s = chr->opaque;
1995 s->max_size = qemu_chr_be_can_write(chr);
1999 static void win_chr_readfile(CharDriverState *chr)
2001 WinCharState *s = chr->opaque;
2003 uint8_t buf[READ_BUF_LEN];
2006 ZeroMemory(&s->orecv, sizeof(s->orecv));
2007 s->orecv.hEvent = s->hrecv;
2008 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2010 err = GetLastError();
2011 if (err == ERROR_IO_PENDING) {
2012 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2017 qemu_chr_be_write(chr, buf, size);
2021 static void win_chr_read(CharDriverState *chr)
2023 WinCharState *s = chr->opaque;
2025 if (s->len > s->max_size)
2026 s->len = s->max_size;
2030 win_chr_readfile(chr);
2033 static int win_chr_poll(void *opaque)
2035 CharDriverState *chr = opaque;
2036 WinCharState *s = chr->opaque;
2040 ClearCommError(s->hcom, &comerr, &status);
2041 if (status.cbInQue > 0) {
2042 s->len = status.cbInQue;
2043 win_chr_read_poll(chr);
2050 static CharDriverState *qemu_chr_open_win_path(const char *filename,
2053 CharDriverState *chr;
2056 chr = qemu_chr_alloc();
2057 s = g_new0(WinCharState, 1);
2059 chr->chr_write = win_chr_write;
2060 chr->chr_close = win_chr_close;
2062 if (win_chr_init(chr, filename, errp) < 0) {
2070 static int win_chr_pipe_poll(void *opaque)
2072 CharDriverState *chr = opaque;
2073 WinCharState *s = chr->opaque;
2076 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2079 win_chr_read_poll(chr);
2086 static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2089 WinCharState *s = chr->opaque;
2093 char openname[CHR_MAX_FILENAME_SIZE];
2097 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2099 error_setg(errp, "Failed CreateEvent");
2102 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2104 error_setg(errp, "Failed CreateEvent");
2108 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
2109 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2110 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2112 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
2113 if (s->hcom == INVALID_HANDLE_VALUE) {
2114 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
2119 ZeroMemory(&ov, sizeof(ov));
2120 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2121 ret = ConnectNamedPipe(s->hcom, &ov);
2123 error_setg(errp, "Failed ConnectNamedPipe");
2127 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2129 error_setg(errp, "Failed GetOverlappedResult");
2131 CloseHandle(ov.hEvent);
2138 CloseHandle(ov.hEvent);
2141 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2150 static CharDriverState *qemu_chr_open_pipe(const char *id,
2151 ChardevBackend *backend,
2155 ChardevHostdev *opts = backend->u.pipe;
2156 const char *filename = opts->device;
2157 CharDriverState *chr;
2160 chr = qemu_chr_alloc();
2161 s = g_new0(WinCharState, 1);
2163 chr->chr_write = win_chr_write;
2164 chr->chr_close = win_chr_close;
2166 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2174 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
2176 CharDriverState *chr;
2179 chr = qemu_chr_alloc();
2180 s = g_new0(WinCharState, 1);
2183 chr->chr_write = win_chr_write;
2187 static CharDriverState *qemu_chr_open_win_con(const char *id,
2188 ChardevBackend *backend,
2192 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
2195 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2197 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2204 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2214 static void win_stdio_wait_func(void *opaque)
2216 CharDriverState *chr = opaque;
2217 WinStdioCharState *stdio = chr->opaque;
2218 INPUT_RECORD buf[4];
2223 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
2226 /* Avoid error storm */
2227 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2231 for (i = 0; i < dwSize; i++) {
2232 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2234 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2236 if (kev->uChar.AsciiChar != 0) {
2237 for (j = 0; j < kev->wRepeatCount; j++) {
2238 if (qemu_chr_be_can_write(chr)) {
2239 uint8_t c = kev->uChar.AsciiChar;
2240 qemu_chr_be_write(chr, &c, 1);
2248 static DWORD WINAPI win_stdio_thread(LPVOID param)
2250 CharDriverState *chr = param;
2251 WinStdioCharState *stdio = chr->opaque;
2257 /* Wait for one byte */
2258 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2260 /* Exit in case of error, continue if nothing read */
2268 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2269 if (stdio->win_stdio_buf == '\r') {
2273 /* Signal the main thread and wait until the byte was eaten */
2274 if (!SetEvent(stdio->hInputReadyEvent)) {
2277 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2283 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2287 static void win_stdio_thread_wait_func(void *opaque)
2289 CharDriverState *chr = opaque;
2290 WinStdioCharState *stdio = chr->opaque;
2292 if (qemu_chr_be_can_write(chr)) {
2293 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2296 SetEvent(stdio->hInputDoneEvent);
2299 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2301 WinStdioCharState *stdio = chr->opaque;
2304 GetConsoleMode(stdio->hStdIn, &dwMode);
2307 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2309 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2313 static void win_stdio_close(CharDriverState *chr)
2315 WinStdioCharState *stdio = chr->opaque;
2317 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2318 CloseHandle(stdio->hInputReadyEvent);
2320 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2321 CloseHandle(stdio->hInputDoneEvent);
2323 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2324 TerminateThread(stdio->hInputThread, 0);
2327 g_free(chr->opaque);
2331 static CharDriverState *qemu_chr_open_stdio(const char *id,
2332 ChardevBackend *backend,
2336 CharDriverState *chr;
2337 WinStdioCharState *stdio;
2341 chr = qemu_chr_alloc();
2342 stdio = g_new0(WinStdioCharState, 1);
2344 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2345 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2346 error_setg(errp, "cannot open stdio: invalid handle");
2350 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2352 chr->opaque = stdio;
2353 chr->chr_write = win_stdio_write;
2354 chr->chr_close = win_stdio_close;
2357 if (qemu_add_wait_object(stdio->hStdIn,
2358 win_stdio_wait_func, chr)) {
2359 error_setg(errp, "qemu_add_wait_object: failed");
2365 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2366 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2367 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2368 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2369 error_setg(errp, "cannot create event");
2372 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2373 win_stdio_thread_wait_func, chr)) {
2374 error_setg(errp, "qemu_add_wait_object: failed");
2377 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2380 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2381 error_setg(errp, "cannot create stdio thread");
2386 dwMode |= ENABLE_LINE_INPUT;
2389 /* set the terminal in raw mode */
2390 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2391 dwMode |= ENABLE_PROCESSED_INPUT;
2394 SetConsoleMode(stdio->hStdIn, dwMode);
2396 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2397 qemu_chr_fe_set_echo(chr, false);
2402 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2404 CloseHandle(stdio->hInputReadyEvent);
2405 CloseHandle(stdio->hInputDoneEvent);
2407 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2410 #endif /* !_WIN32 */
2413 /***********************************************************/
2414 /* UDP Net console */
2419 uint8_t buf[READ_BUF_LEN];
2425 /* Called with chr_write_lock held. */
2426 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2428 NetCharDriver *s = chr->opaque;
2429 gsize bytes_written;
2432 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2433 if (status == G_IO_STATUS_EOF) {
2435 } else if (status != G_IO_STATUS_NORMAL) {
2439 return bytes_written;
2442 static int udp_chr_read_poll(void *opaque)
2444 CharDriverState *chr = opaque;
2445 NetCharDriver *s = chr->opaque;
2447 s->max_size = qemu_chr_be_can_write(chr);
2449 /* If there were any stray characters in the queue process them
2452 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2453 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2455 s->max_size = qemu_chr_be_can_write(chr);
2460 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2462 CharDriverState *chr = opaque;
2463 NetCharDriver *s = chr->opaque;
2464 gsize bytes_read = 0;
2467 if (s->max_size == 0) {
2470 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2472 s->bufcnt = bytes_read;
2473 s->bufptr = s->bufcnt;
2474 if (status != G_IO_STATUS_NORMAL) {
2475 remove_fd_in_watch(chr);
2480 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2481 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2483 s->max_size = qemu_chr_be_can_write(chr);
2489 static void udp_chr_update_read_handler(CharDriverState *chr)
2491 NetCharDriver *s = chr->opaque;
2493 remove_fd_in_watch(chr);
2495 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2500 static void udp_chr_close(CharDriverState *chr)
2502 NetCharDriver *s = chr->opaque;
2504 remove_fd_in_watch(chr);
2506 g_io_channel_unref(s->chan);
2510 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2513 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2515 CharDriverState *chr = NULL;
2516 NetCharDriver *s = NULL;
2518 chr = qemu_chr_alloc();
2519 s = g_new0(NetCharDriver, 1);
2522 s->chan = io_channel_from_socket(s->fd);
2526 chr->chr_write = udp_chr_write;
2527 chr->chr_update_read_handler = udp_chr_update_read_handler;
2528 chr->chr_close = udp_chr_close;
2529 /* be isn't opened until we get a connection */
2530 chr->explicit_be_open = true;
2534 /***********************************************************/
2535 /* TCP Net console */
2539 GIOChannel *chan, *listen_chan;
2548 int read_msgfds_num;
2550 int write_msgfds_num;
2552 SocketAddress *addr;
2556 guint reconnect_timer;
2557 int64_t reconnect_time;
2558 bool connect_err_reported;
2561 static gboolean socket_reconnect_timeout(gpointer opaque);
2563 static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2565 TCPCharDriver *s = chr->opaque;
2566 assert(s->connected == 0);
2567 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2568 socket_reconnect_timeout, chr);
2571 static void check_report_connect_error(CharDriverState *chr,
2574 TCPCharDriver *s = chr->opaque;
2576 if (!s->connect_err_reported) {
2577 error_report("Unable to connect character device %s: %s",
2578 chr->label, error_get_pretty(err));
2579 s->connect_err_reported = true;
2581 qemu_chr_socket_restart_timer(chr);
2584 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2587 static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2589 TCPCharDriver *s = chr->opaque;
2594 size_t fd_size = s->write_msgfds_num * sizeof(int);
2595 char control[CMSG_SPACE(fd_size)];
2596 struct cmsghdr *cmsg;
2598 memset(&msgh, 0, sizeof(msgh));
2599 memset(control, 0, sizeof(control));
2601 /* set the payload */
2602 iov.iov_base = (uint8_t *) buf;
2605 msgh.msg_iov = &iov;
2606 msgh.msg_iovlen = 1;
2608 msgh.msg_control = control;
2609 msgh.msg_controllen = sizeof(control);
2611 cmsg = CMSG_FIRSTHDR(&msgh);
2613 cmsg->cmsg_len = CMSG_LEN(fd_size);
2614 cmsg->cmsg_level = SOL_SOCKET;
2615 cmsg->cmsg_type = SCM_RIGHTS;
2616 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2619 r = sendmsg(s->fd, &msgh, 0);
2620 } while (r < 0 && errno == EINTR);
2622 /* free the written msgfds, no matter what */
2623 if (s->write_msgfds_num) {
2624 g_free(s->write_msgfds);
2625 s->write_msgfds = 0;
2626 s->write_msgfds_num = 0;
2633 /* Called with chr_write_lock held. */
2634 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2636 TCPCharDriver *s = chr->opaque;
2639 if (s->is_unix && s->write_msgfds_num) {
2640 return unix_send_msgfds(chr, buf, len);
2644 return io_channel_send(s->chan, buf, len);
2647 /* XXX: indicate an error ? */
2652 static int tcp_chr_read_poll(void *opaque)
2654 CharDriverState *chr = opaque;
2655 TCPCharDriver *s = chr->opaque;
2658 s->max_size = qemu_chr_be_can_write(chr);
2663 #define IAC_BREAK 243
2664 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2666 uint8_t *buf, int *size)
2668 /* Handle any telnet client's basic IAC options to satisfy char by
2669 * char mode with no echo. All IAC options will be removed from
2670 * the buf and the do_telnetopt variable will be used to track the
2671 * state of the width of the IAC information.
2673 * IAC commands come in sets of 3 bytes with the exception of the
2674 * "IAC BREAK" command and the double IAC.
2680 for (i = 0; i < *size; i++) {
2681 if (s->do_telnetopt > 1) {
2682 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2683 /* Double IAC means send an IAC */
2687 s->do_telnetopt = 1;
2689 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2690 /* Handle IAC break commands by sending a serial break */
2691 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2696 if (s->do_telnetopt >= 4) {
2697 s->do_telnetopt = 1;
2700 if ((unsigned char)buf[i] == IAC) {
2701 s->do_telnetopt = 2;
2712 static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
2714 TCPCharDriver *s = chr->opaque;
2715 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2717 assert(num <= TCP_MAX_FDS);
2722 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2724 /* Close unused fds */
2725 for (i = to_copy; i < s->read_msgfds_num; i++) {
2726 close(s->read_msgfds[i]);
2729 g_free(s->read_msgfds);
2731 s->read_msgfds_num = 0;
2737 static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2739 TCPCharDriver *s = chr->opaque;
2741 /* clear old pending fd array */
2742 g_free(s->write_msgfds);
2745 s->write_msgfds = g_new(int, num);
2746 memcpy(s->write_msgfds, fds, num * sizeof(int));
2749 s->write_msgfds_num = num;
2755 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2757 TCPCharDriver *s = chr->opaque;
2758 struct cmsghdr *cmsg;
2760 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2763 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
2764 cmsg->cmsg_level != SOL_SOCKET ||
2765 cmsg->cmsg_type != SCM_RIGHTS) {
2769 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2775 /* close and clean read_msgfds */
2776 for (i = 0; i < s->read_msgfds_num; i++) {
2777 close(s->read_msgfds[i]);
2780 if (s->read_msgfds_num) {
2781 g_free(s->read_msgfds);
2784 s->read_msgfds_num = fd_size / sizeof(int);
2785 s->read_msgfds = g_malloc(fd_size);
2786 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2788 for (i = 0; i < s->read_msgfds_num; i++) {
2789 int fd = s->read_msgfds[i];
2794 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2797 #ifndef MSG_CMSG_CLOEXEC
2798 qemu_set_cloexec(fd);
2804 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2806 TCPCharDriver *s = chr->opaque;
2807 struct msghdr msg = { NULL, };
2808 struct iovec iov[1];
2810 struct cmsghdr cmsg;
2811 char control[CMSG_SPACE(sizeof(int) * TCP_MAX_FDS)];
2816 iov[0].iov_base = buf;
2817 iov[0].iov_len = len;
2821 msg.msg_control = &msg_control;
2822 msg.msg_controllen = sizeof(msg_control);
2824 #ifdef MSG_CMSG_CLOEXEC
2825 flags |= MSG_CMSG_CLOEXEC;
2828 ret = recvmsg(s->fd, &msg, flags);
2829 } while (ret == -1 && errno == EINTR);
2831 if (ret > 0 && s->is_unix) {
2832 unix_process_msgfd(chr, &msg);
2838 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2840 TCPCharDriver *s = chr->opaque;
2844 ret = qemu_recv(s->fd, buf, len, 0);
2845 } while (ret == -1 && socket_error() == EINTR);
2851 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2853 TCPCharDriver *s = chr->opaque;
2854 return g_io_create_watch(s->chan, cond);
2857 static void tcp_chr_disconnect(CharDriverState *chr)
2859 TCPCharDriver *s = chr->opaque;
2862 if (s->listen_chan) {
2863 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2864 tcp_chr_accept, chr);
2866 remove_fd_in_watch(chr);
2867 g_io_channel_unref(s->chan);
2871 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2872 "disconnected:", s->addr, s->is_listen, s->is_telnet);
2873 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2874 if (s->reconnect_time) {
2875 qemu_chr_socket_restart_timer(chr);
2879 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2881 CharDriverState *chr = opaque;
2882 TCPCharDriver *s = chr->opaque;
2883 uint8_t buf[READ_BUF_LEN];
2886 if (!s->connected || s->max_size <= 0) {
2890 if (len > s->max_size)
2892 size = tcp_chr_recv(chr, (void *)buf, len);
2895 socket_error() != EAGAIN && socket_error() != EWOULDBLOCK)) {
2896 /* connection closed */
2897 tcp_chr_disconnect(chr);
2898 } else if (size > 0) {
2899 if (s->do_telnetopt)
2900 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2902 qemu_chr_be_write(chr, buf, size);
2908 static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2910 TCPCharDriver *s = chr->opaque;
2913 if (!s->connected) {
2917 size = tcp_chr_recv(chr, (void *) buf, len);
2919 /* connection closed */
2920 tcp_chr_disconnect(chr);
2927 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2929 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2932 chr->avail_connections = 1;
2939 static void tcp_chr_connect(void *opaque)
2941 CharDriverState *chr = opaque;
2942 TCPCharDriver *s = chr->opaque;
2943 struct sockaddr_storage ss, ps;
2944 socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
2946 memset(&ss, 0, ss_len);
2947 if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2948 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2949 "Error in getsockname: %s\n", strerror(errno));
2950 } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
2951 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2952 "Error in getpeername: %s\n", strerror(errno));
2954 sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2955 &ss, ss_len, &ps, ps_len,
2956 s->is_listen, s->is_telnet);
2961 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2964 qemu_chr_be_generic_open(chr);
2967 static void tcp_chr_update_read_handler(CharDriverState *chr)
2969 TCPCharDriver *s = chr->opaque;
2971 remove_fd_in_watch(chr);
2973 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2978 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2979 static void tcp_chr_telnet_init(int fd)
2982 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2983 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2984 send(fd, (char *)buf, 3, 0);
2985 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2986 send(fd, (char *)buf, 3, 0);
2987 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2988 send(fd, (char *)buf, 3, 0);
2989 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2990 send(fd, (char *)buf, 3, 0);
2993 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2995 TCPCharDriver *s = chr->opaque;
2999 qemu_set_nonblock(fd);
3001 socket_set_nodelay(fd);
3003 s->chan = io_channel_from_socket(fd);
3004 if (s->listen_tag) {
3005 g_source_remove(s->listen_tag);
3008 tcp_chr_connect(chr);
3013 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
3015 CharDriverState *chr = opaque;
3016 TCPCharDriver *s = chr->opaque;
3017 struct sockaddr_in saddr;
3019 struct sockaddr_un uaddr;
3021 struct sockaddr *addr;
3028 len = sizeof(uaddr);
3029 addr = (struct sockaddr *)&uaddr;
3033 len = sizeof(saddr);
3034 addr = (struct sockaddr *)&saddr;
3036 fd = qemu_accept(s->listen_fd, addr, &len);
3037 if (fd < 0 && errno != EINTR) {
3040 } else if (fd >= 0) {
3041 if (s->do_telnetopt)
3042 tcp_chr_telnet_init(fd);
3046 if (tcp_chr_add_client(chr, fd) < 0)
3052 static void tcp_chr_close(CharDriverState *chr)
3054 TCPCharDriver *s = chr->opaque;
3057 if (s->reconnect_timer) {
3058 g_source_remove(s->reconnect_timer);
3059 s->reconnect_timer = 0;
3061 qapi_free_SocketAddress(s->addr);
3063 remove_fd_in_watch(chr);
3065 g_io_channel_unref(s->chan);
3069 if (s->listen_fd >= 0) {
3070 if (s->listen_tag) {
3071 g_source_remove(s->listen_tag);
3074 if (s->listen_chan) {
3075 g_io_channel_unref(s->listen_chan);
3077 closesocket(s->listen_fd);
3079 if (s->read_msgfds_num) {
3080 for (i = 0; i < s->read_msgfds_num; i++) {
3081 close(s->read_msgfds[i]);
3083 g_free(s->read_msgfds);
3085 if (s->write_msgfds_num) {
3086 g_free(s->write_msgfds);
3089 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
3092 static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
3094 TCPCharDriver *s = chr->opaque;
3098 s->listen_chan = io_channel_from_socket(s->listen_fd);
3099 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
3100 tcp_chr_accept, chr);
3104 socket_set_nodelay(fd);
3105 s->chan = io_channel_from_socket(s->fd);
3106 tcp_chr_connect(chr);
3110 static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
3112 CharDriverState *chr = opaque;
3113 TCPCharDriver *s = chr->opaque;
3116 check_report_connect_error(chr, err);
3120 s->connect_err_reported = false;
3121 qemu_chr_finish_socket_connection(chr, fd);
3124 static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
3126 TCPCharDriver *s = chr->opaque;
3130 fd = socket_listen(s->addr, errp);
3131 } else if (s->reconnect_time) {
3132 fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
3135 fd = socket_connect(s->addr, errp, NULL, NULL);
3141 qemu_chr_finish_socket_connection(chr, fd);
3145 /*********************************************************/
3146 /* Ring buffer chardev */
3153 } RingBufCharDriver;
3155 static size_t ringbuf_count(const CharDriverState *chr)
3157 const RingBufCharDriver *d = chr->opaque;
3159 return d->prod - d->cons;
3162 /* Called with chr_write_lock held. */
3163 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
3165 RingBufCharDriver *d = chr->opaque;
3168 if (!buf || (len < 0)) {
3172 for (i = 0; i < len; i++ ) {
3173 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3174 if (d->prod - d->cons > d->size) {
3175 d->cons = d->prod - d->size;
3182 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
3184 RingBufCharDriver *d = chr->opaque;
3187 qemu_mutex_lock(&chr->chr_write_lock);
3188 for (i = 0; i < len && d->cons != d->prod; i++) {
3189 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
3191 qemu_mutex_unlock(&chr->chr_write_lock);
3196 static void ringbuf_chr_close(struct CharDriverState *chr)
3198 RingBufCharDriver *d = chr->opaque;
3205 static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3206 ChardevBackend *backend,
3210 ChardevRingbuf *opts = backend->u.ringbuf;
3211 CharDriverState *chr;
3212 RingBufCharDriver *d;
3214 chr = qemu_chr_alloc();
3215 d = g_malloc(sizeof(*d));
3217 d->size = opts->has_size ? opts->size : 65536;
3219 /* The size must be power of 2 */
3220 if (d->size & (d->size - 1)) {
3221 error_setg(errp, "size of ringbuf chardev must be power of two");
3227 d->cbuf = g_malloc0(d->size);
3230 chr->chr_write = ringbuf_chr_write;
3231 chr->chr_close = ringbuf_chr_close;
3241 bool chr_is_ringbuf(const CharDriverState *chr)
3243 return chr->chr_write == ringbuf_chr_write;
3246 void qmp_ringbuf_write(const char *device, const char *data,
3247 bool has_format, enum DataFormat format,
3250 CharDriverState *chr;
3251 const uint8_t *write_data;
3255 chr = qemu_chr_find(device);
3257 error_setg(errp, "Device '%s' not found", device);
3261 if (!chr_is_ringbuf(chr)) {
3262 error_setg(errp,"%s is not a ringbuf device", device);
3266 if (has_format && (format == DATA_FORMAT_BASE64)) {
3267 write_data = g_base64_decode(data, &write_count);
3269 write_data = (uint8_t *)data;
3270 write_count = strlen(data);
3273 ret = ringbuf_chr_write(chr, write_data, write_count);
3275 if (write_data != (uint8_t *)data) {
3276 g_free((void *)write_data);
3280 error_setg(errp, "Failed to write to device %s", device);
3285 char *qmp_ringbuf_read(const char *device, int64_t size,
3286 bool has_format, enum DataFormat format,
3289 CharDriverState *chr;
3294 chr = qemu_chr_find(device);
3296 error_setg(errp, "Device '%s' not found", device);
3300 if (!chr_is_ringbuf(chr)) {
3301 error_setg(errp,"%s is not a ringbuf device", device);
3306 error_setg(errp, "size must be greater than zero");
3310 count = ringbuf_count(chr);
3311 size = size > count ? count : size;
3312 read_data = g_malloc(size + 1);
3314 ringbuf_chr_read(chr, read_data, size);
3316 if (has_format && (format == DATA_FORMAT_BASE64)) {
3317 data = g_base64_encode(read_data, size);
3321 * FIXME should read only complete, valid UTF-8 characters up
3322 * to @size bytes. Invalid sequences should be replaced by a
3323 * suitable replacement character. Except when (and only
3324 * when) ring buffer lost characters since last read, initial
3325 * continuation characters should be dropped.
3327 read_data[size] = 0;
3328 data = (char *)read_data;
3334 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3336 char host[65], port[33], width[8], height[8];
3340 Error *local_err = NULL;
3342 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3344 error_report_err(local_err);
3348 if (strstart(filename, "mon:", &p)) {
3350 qemu_opt_set(opts, "mux", "on", &error_abort);
3351 if (strcmp(filename, "stdio") == 0) {
3352 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3353 * but pass it to the guest. Handle this only for compat syntax,
3354 * for -chardev syntax we have special option for this.
3355 * This is what -nographic did, redirecting+muxing serial+monitor
3356 * to stdio causing Ctrl+C to be passed to guest. */
3357 qemu_opt_set(opts, "signal", "off", &error_abort);
3361 if (strcmp(filename, "null") == 0 ||
3362 strcmp(filename, "pty") == 0 ||
3363 strcmp(filename, "msmouse") == 0 ||
3364 strcmp(filename, "braille") == 0 ||
3365 strcmp(filename, "testdev") == 0 ||
3366 strcmp(filename, "stdio") == 0) {
3367 qemu_opt_set(opts, "backend", filename, &error_abort);
3370 if (strstart(filename, "vc", &p)) {
3371 qemu_opt_set(opts, "backend", "vc", &error_abort);
3373 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
3375 qemu_opt_set(opts, "width", width, &error_abort);
3376 qemu_opt_set(opts, "height", height, &error_abort);
3377 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
3379 qemu_opt_set(opts, "cols", width, &error_abort);
3380 qemu_opt_set(opts, "rows", height, &error_abort);
3387 if (strcmp(filename, "con:") == 0) {
3388 qemu_opt_set(opts, "backend", "console", &error_abort);
3391 if (strstart(filename, "COM", NULL)) {
3392 qemu_opt_set(opts, "backend", "serial", &error_abort);
3393 qemu_opt_set(opts, "path", filename, &error_abort);
3396 if (strstart(filename, "file:", &p)) {
3397 qemu_opt_set(opts, "backend", "file", &error_abort);
3398 qemu_opt_set(opts, "path", p, &error_abort);
3401 if (strstart(filename, "pipe:", &p)) {
3402 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3403 qemu_opt_set(opts, "path", p, &error_abort);
3406 if (strstart(filename, "tcp:", &p) ||
3407 strstart(filename, "telnet:", &p)) {
3408 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3410 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3413 qemu_opt_set(opts, "backend", "socket", &error_abort);
3414 qemu_opt_set(opts, "host", host, &error_abort);
3415 qemu_opt_set(opts, "port", port, &error_abort);
3416 if (p[pos] == ',') {
3417 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3419 error_report_err(local_err);
3423 if (strstart(filename, "telnet:", &p))
3424 qemu_opt_set(opts, "telnet", "on", &error_abort);
3427 if (strstart(filename, "udp:", &p)) {
3428 qemu_opt_set(opts, "backend", "udp", &error_abort);
3429 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3431 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3435 qemu_opt_set(opts, "host", host, &error_abort);
3436 qemu_opt_set(opts, "port", port, &error_abort);
3437 if (p[pos] == '@') {
3439 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3441 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3445 qemu_opt_set(opts, "localaddr", host, &error_abort);
3446 qemu_opt_set(opts, "localport", port, &error_abort);
3450 if (strstart(filename, "unix:", &p)) {
3451 qemu_opt_set(opts, "backend", "socket", &error_abort);
3452 qemu_opts_do_parse(opts, p, "path", &local_err);
3454 error_report_err(local_err);
3459 if (strstart(filename, "/dev/parport", NULL) ||
3460 strstart(filename, "/dev/ppi", NULL)) {
3461 qemu_opt_set(opts, "backend", "parport", &error_abort);
3462 qemu_opt_set(opts, "path", filename, &error_abort);
3465 if (strstart(filename, "/dev/", NULL)) {
3466 qemu_opt_set(opts, "backend", "tty", &error_abort);
3467 qemu_opt_set(opts, "path", filename, &error_abort);
3472 qemu_opts_del(opts);
3476 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3479 const char *path = qemu_opt_get(opts, "path");
3482 error_setg(errp, "chardev: file: no filename given");
3485 backend->u.file = g_new0(ChardevFile, 1);
3486 backend->u.file->out = g_strdup(path);
3489 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3492 backend->u.stdio = g_new0(ChardevStdio, 1);
3493 backend->u.stdio->has_signal = true;
3494 backend->u.stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3497 #ifdef HAVE_CHARDEV_SERIAL
3498 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3501 const char *device = qemu_opt_get(opts, "path");
3503 if (device == NULL) {
3504 error_setg(errp, "chardev: serial/tty: no device path given");
3507 backend->u.serial = g_new0(ChardevHostdev, 1);
3508 backend->u.serial->device = g_strdup(device);
3512 #ifdef HAVE_CHARDEV_PARPORT
3513 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3516 const char *device = qemu_opt_get(opts, "path");
3518 if (device == NULL) {
3519 error_setg(errp, "chardev: parallel: no device path given");
3522 backend->u.parallel = g_new0(ChardevHostdev, 1);
3523 backend->u.parallel->device = g_strdup(device);
3527 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3530 const char *device = qemu_opt_get(opts, "path");
3532 if (device == NULL) {
3533 error_setg(errp, "chardev: pipe: no device path given");
3536 backend->u.pipe = g_new0(ChardevHostdev, 1);
3537 backend->u.pipe->device = g_strdup(device);
3540 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3545 backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
3547 val = qemu_opt_get_size(opts, "size", 0);
3549 backend->u.ringbuf->has_size = true;
3550 backend->u.ringbuf->size = val;
3554 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3557 const char *chardev = qemu_opt_get(opts, "chardev");
3559 if (chardev == NULL) {
3560 error_setg(errp, "chardev: mux: no chardev given");
3563 backend->u.mux = g_new0(ChardevMux, 1);
3564 backend->u.mux->chardev = g_strdup(chardev);
3567 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3570 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3571 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3572 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3573 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
3574 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
3575 const char *path = qemu_opt_get(opts, "path");
3576 const char *host = qemu_opt_get(opts, "host");
3577 const char *port = qemu_opt_get(opts, "port");
3578 SocketAddress *addr;
3582 error_setg(errp, "chardev: socket: no host given");
3586 error_setg(errp, "chardev: socket: no port given");
3591 backend->u.socket = g_new0(ChardevSocket, 1);
3593 backend->u.socket->has_nodelay = true;
3594 backend->u.socket->nodelay = do_nodelay;
3595 backend->u.socket->has_server = true;
3596 backend->u.socket->server = is_listen;
3597 backend->u.socket->has_telnet = true;
3598 backend->u.socket->telnet = is_telnet;
3599 backend->u.socket->has_wait = true;
3600 backend->u.socket->wait = is_waitconnect;
3601 backend->u.socket->has_reconnect = true;
3602 backend->u.socket->reconnect = reconnect;
3604 addr = g_new0(SocketAddress, 1);
3606 addr->type = SOCKET_ADDRESS_KIND_UNIX;
3607 addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3608 addr->u.q_unix->path = g_strdup(path);
3610 addr->type = SOCKET_ADDRESS_KIND_INET;
3611 addr->u.inet = g_new0(InetSocketAddress, 1);
3612 addr->u.inet->host = g_strdup(host);
3613 addr->u.inet->port = g_strdup(port);
3614 addr->u.inet->has_to = qemu_opt_get(opts, "to");
3615 addr->u.inet->to = qemu_opt_get_number(opts, "to", 0);
3616 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3617 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3618 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3619 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3621 backend->u.socket->addr = addr;
3624 static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3627 const char *host = qemu_opt_get(opts, "host");
3628 const char *port = qemu_opt_get(opts, "port");
3629 const char *localaddr = qemu_opt_get(opts, "localaddr");
3630 const char *localport = qemu_opt_get(opts, "localport");
3631 bool has_local = false;
3632 SocketAddress *addr;
3634 if (host == NULL || strlen(host) == 0) {
3637 if (port == NULL || strlen(port) == 0) {
3638 error_setg(errp, "chardev: udp: remote port not specified");
3641 if (localport == NULL || strlen(localport) == 0) {
3646 if (localaddr == NULL || strlen(localaddr) == 0) {
3652 backend->u.udp = g_new0(ChardevUdp, 1);
3654 addr = g_new0(SocketAddress, 1);
3655 addr->type = SOCKET_ADDRESS_KIND_INET;
3656 addr->u.inet = g_new0(InetSocketAddress, 1);
3657 addr->u.inet->host = g_strdup(host);
3658 addr->u.inet->port = g_strdup(port);
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);
3663 backend->u.udp->remote = addr;
3666 backend->u.udp->has_local = true;
3667 addr = g_new0(SocketAddress, 1);
3668 addr->type = SOCKET_ADDRESS_KIND_INET;
3669 addr->u.inet = g_new0(InetSocketAddress, 1);
3670 addr->u.inet->host = g_strdup(localaddr);
3671 addr->u.inet->port = g_strdup(localport);
3672 backend->u.udp->local = addr;
3676 typedef struct CharDriver {
3678 ChardevBackendKind kind;
3679 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3680 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3681 ChardevReturn *ret, Error **errp);
3684 static GSList *backends;
3686 void register_char_driver(const char *name, ChardevBackendKind kind,
3687 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3688 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3689 ChardevReturn *ret, Error **errp))
3693 s = g_malloc0(sizeof(*s));
3694 s->name = g_strdup(name);
3699 backends = g_slist_append(backends, s);
3702 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3703 void (*init)(struct CharDriverState *s),
3706 Error *local_err = NULL;
3708 CharDriverState *chr;
3710 ChardevReturn *ret = NULL;
3711 ChardevBackend *backend;
3712 const char *id = qemu_opts_id(opts);
3716 error_setg(errp, "chardev: no id specified");
3720 if (qemu_opt_get(opts, "backend") == NULL) {
3721 error_setg(errp, "chardev: \"%s\" missing backend",
3722 qemu_opts_id(opts));
3725 for (i = backends; i; i = i->next) {
3728 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3733 error_setg(errp, "chardev: backend \"%s\" not found",
3734 qemu_opt_get(opts, "backend"));
3738 backend = g_new0(ChardevBackend, 1);
3740 if (qemu_opt_get_bool(opts, "mux", 0)) {
3741 bid = g_strdup_printf("%s-base", id);
3745 backend->type = cd->kind;
3747 cd->parse(opts, backend, &local_err);
3749 error_propagate(errp, local_err);
3753 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3759 qapi_free_ChardevBackend(backend);
3760 qapi_free_ChardevReturn(ret);
3761 backend = g_new0(ChardevBackend, 1);
3762 backend->u.mux = g_new0(ChardevMux, 1);
3763 backend->type = CHARDEV_BACKEND_KIND_MUX;
3764 backend->u.mux->chardev = g_strdup(bid);
3765 ret = qmp_chardev_add(id, backend, errp);
3767 chr = qemu_chr_find(bid);
3768 qemu_chr_delete(chr);
3774 chr = qemu_chr_find(id);
3778 qapi_free_ChardevBackend(backend);
3779 qapi_free_ChardevReturn(ret);
3784 qemu_opts_del(opts);
3788 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3791 CharDriverState *chr;
3795 if (strstart(filename, "chardev:", &p)) {
3796 return qemu_chr_find(p);
3799 opts = qemu_chr_parse_compat(label, filename);
3803 chr = qemu_chr_new_from_opts(opts, init, &err);
3805 error_report_err(err);
3807 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3808 qemu_chr_fe_claim_no_fail(chr);
3809 monitor_init(chr, MONITOR_USE_READLINE);
3814 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3816 if (chr->chr_set_echo) {
3817 chr->chr_set_echo(chr, echo);
3821 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3823 if (chr->fe_open == fe_open) {
3826 chr->fe_open = fe_open;
3827 if (chr->chr_set_fe_open) {
3828 chr->chr_set_fe_open(chr, fe_open);
3832 void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3834 if (chr->chr_fe_event) {
3835 chr->chr_fe_event(chr, event);
3839 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3840 GIOFunc func, void *user_data)
3845 if (s->chr_add_watch == NULL) {
3849 src = s->chr_add_watch(s, cond);
3854 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3855 tag = g_source_attach(src, NULL);
3856 g_source_unref(src);
3861 int qemu_chr_fe_claim(CharDriverState *s)
3863 if (s->avail_connections < 1) {
3866 s->avail_connections--;
3870 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3872 if (qemu_chr_fe_claim(s) != 0) {
3873 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3874 __func__, s->label);
3879 void qemu_chr_fe_release(CharDriverState *s)
3881 s->avail_connections++;
3884 void qemu_chr_free(CharDriverState *chr)
3886 if (chr->chr_close) {
3887 chr->chr_close(chr);
3889 g_free(chr->filename);
3891 qemu_opts_del(chr->opts);
3895 void qemu_chr_delete(CharDriverState *chr)
3897 QTAILQ_REMOVE(&chardevs, chr, next);
3901 ChardevInfoList *qmp_query_chardev(Error **errp)
3903 ChardevInfoList *chr_list = NULL;
3904 CharDriverState *chr;
3906 QTAILQ_FOREACH(chr, &chardevs, next) {
3907 ChardevInfoList *info = g_malloc0(sizeof(*info));
3908 info->value = g_malloc0(sizeof(*info->value));
3909 info->value->label = g_strdup(chr->label);
3910 info->value->filename = g_strdup(chr->filename);
3911 info->value->frontend_open = chr->fe_open;
3913 info->next = chr_list;
3920 ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3922 ChardevBackendInfoList *backend_list = NULL;
3923 CharDriver *c = NULL;
3926 for (i = backends; i; i = i->next) {
3927 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3929 info->value = g_malloc0(sizeof(*info->value));
3930 info->value->name = g_strdup(c->name);
3932 info->next = backend_list;
3933 backend_list = info;
3936 return backend_list;
3939 CharDriverState *qemu_chr_find(const char *name)
3941 CharDriverState *chr;
3943 QTAILQ_FOREACH(chr, &chardevs, next) {
3944 if (strcmp(chr->label, name) != 0)
3951 /* Get a character (serial) device interface. */
3952 CharDriverState *qemu_char_get_next_serial(void)
3954 static int next_serial;
3955 CharDriverState *chr;
3957 /* FIXME: This function needs to go away: use chardev properties! */
3959 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3960 chr = serial_hds[next_serial++];
3961 qemu_chr_fe_claim_no_fail(chr);
3967 QemuOptsList qemu_chardev_opts = {
3969 .implied_opt_name = "backend",
3970 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3974 .type = QEMU_OPT_STRING,
3977 .type = QEMU_OPT_STRING,
3980 .type = QEMU_OPT_STRING,
3983 .type = QEMU_OPT_STRING,
3985 .name = "localaddr",
3986 .type = QEMU_OPT_STRING,
3988 .name = "localport",
3989 .type = QEMU_OPT_STRING,
3992 .type = QEMU_OPT_NUMBER,
3995 .type = QEMU_OPT_BOOL,
3998 .type = QEMU_OPT_BOOL,
4001 .type = QEMU_OPT_BOOL,
4004 .type = QEMU_OPT_BOOL,
4007 .type = QEMU_OPT_BOOL,
4009 .name = "reconnect",
4010 .type = QEMU_OPT_NUMBER,
4013 .type = QEMU_OPT_BOOL,
4016 .type = QEMU_OPT_NUMBER,
4019 .type = QEMU_OPT_NUMBER,
4022 .type = QEMU_OPT_NUMBER,
4025 .type = QEMU_OPT_NUMBER,
4028 .type = QEMU_OPT_BOOL,
4031 .type = QEMU_OPT_BOOL,
4034 .type = QEMU_OPT_STRING,
4037 .type = QEMU_OPT_NUMBER,
4040 .type = QEMU_OPT_SIZE,
4043 .type = QEMU_OPT_STRING,
4045 { /* end of list */ }
4051 static CharDriverState *qmp_chardev_open_file(const char *id,
4052 ChardevBackend *backend,
4056 ChardevFile *file = backend->u.file;
4060 error_setg(errp, "input file not supported");
4064 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4065 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4066 if (out == INVALID_HANDLE_VALUE) {
4067 error_setg(errp, "open %s failed", file->out);
4070 return qemu_chr_open_win_file(out);
4073 static CharDriverState *qmp_chardev_open_serial(const char *id,
4074 ChardevBackend *backend,
4078 ChardevHostdev *serial = backend->u.serial;
4079 return qemu_chr_open_win_path(serial->device, errp);
4084 static int qmp_chardev_open_file_source(char *src, int flags,
4089 TFR(fd = qemu_open(src, flags, 0666));
4091 error_setg_file_open(errp, errno, src);
4096 static CharDriverState *qmp_chardev_open_file(const char *id,
4097 ChardevBackend *backend,
4101 ChardevFile *file = backend->u.file;
4102 int flags, in = -1, out;
4104 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
4105 out = qmp_chardev_open_file_source(file->out, flags, errp);
4112 in = qmp_chardev_open_file_source(file->in, flags, errp);
4119 return qemu_chr_open_fd(in, out);
4122 #ifdef HAVE_CHARDEV_SERIAL
4123 static CharDriverState *qmp_chardev_open_serial(const char *id,
4124 ChardevBackend *backend,
4128 ChardevHostdev *serial = backend->u.serial;
4131 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
4135 qemu_set_nonblock(fd);
4136 return qemu_chr_open_tty_fd(fd);
4140 #ifdef HAVE_CHARDEV_PARPORT
4141 static CharDriverState *qmp_chardev_open_parallel(const char *id,
4142 ChardevBackend *backend,
4146 ChardevHostdev *parallel = backend->u.parallel;
4149 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
4153 return qemu_chr_open_pp_fd(fd, errp);
4159 static void socket_try_connect(CharDriverState *chr)
4163 if (!qemu_chr_open_socket_fd(chr, &err)) {
4164 check_report_connect_error(chr, err);
4168 static gboolean socket_reconnect_timeout(gpointer opaque)
4170 CharDriverState *chr = opaque;
4171 TCPCharDriver *s = chr->opaque;
4173 s->reconnect_timer = 0;
4179 socket_try_connect(chr);
4184 static CharDriverState *qmp_chardev_open_socket(const char *id,
4185 ChardevBackend *backend,
4189 CharDriverState *chr;
4191 ChardevSocket *sock = backend->u.socket;
4192 SocketAddress *addr = sock->addr;
4193 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4194 bool is_listen = sock->has_server ? sock->server : true;
4195 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4196 bool is_waitconnect = sock->has_wait ? sock->wait : false;
4197 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
4199 chr = qemu_chr_alloc();
4200 s = g_new0(TCPCharDriver, 1);
4204 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
4205 s->is_listen = is_listen;
4206 s->is_telnet = is_telnet;
4207 s->do_nodelay = do_nodelay;
4208 qapi_copy_SocketAddress(&s->addr, sock->addr);
4211 chr->chr_write = tcp_chr_write;
4212 chr->chr_sync_read = tcp_chr_sync_read;
4213 chr->chr_close = tcp_chr_close;
4214 chr->get_msgfds = tcp_get_msgfds;
4215 chr->set_msgfds = tcp_set_msgfds;
4216 chr->chr_add_client = tcp_chr_add_client;
4217 chr->chr_add_watch = tcp_chr_add_watch;
4218 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4219 /* be isn't opened until we get a connection */
4220 chr->explicit_be_open = true;
4222 chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
4223 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
4224 addr, is_listen, is_telnet);
4228 s->do_telnetopt = 1;
4230 } else if (reconnect > 0) {
4231 s->reconnect_time = reconnect;
4234 if (s->reconnect_time) {
4235 socket_try_connect(chr);
4236 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
4238 g_free(chr->filename);
4243 if (is_listen && is_waitconnect) {
4244 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4246 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
4247 qemu_set_nonblock(s->listen_fd);
4253 static CharDriverState *qmp_chardev_open_udp(const char *id,
4254 ChardevBackend *backend,
4258 ChardevUdp *udp = backend->u.udp;
4261 fd = socket_dgram(udp->remote, udp->local, errp);
4265 return qemu_chr_open_udp_fd(fd);
4268 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4271 ChardevReturn *ret = g_new0(ChardevReturn, 1);
4272 CharDriverState *chr = NULL;
4273 Error *local_err = NULL;
4277 chr = qemu_chr_find(id);
4279 error_setg(errp, "Chardev '%s' already exists", id);
4284 for (i = backends; i; i = i->next) {
4287 if (cd->kind == backend->type) {
4288 chr = cd->create(id, backend, ret, &local_err);
4290 error_propagate(errp, local_err);
4299 error_setg(errp, "chardev backend not available");
4303 chr->label = g_strdup(id);
4304 chr->avail_connections =
4305 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
4306 if (!chr->filename) {
4307 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
4309 if (!chr->explicit_be_open) {
4310 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4312 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4320 void qmp_chardev_remove(const char *id, Error **errp)
4322 CharDriverState *chr;
4324 chr = qemu_chr_find(id);
4326 error_setg(errp, "Chardev '%s' not found", id);
4329 if (chr->chr_can_read || chr->chr_read ||
4330 chr->chr_event || chr->handler_opaque) {
4331 error_setg(errp, "Chardev '%s' is busy", id);
4334 qemu_chr_delete(chr);
4337 static void register_types(void)
4339 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
4340 qemu_chr_open_null);
4341 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
4342 qemu_chr_parse_socket, qmp_chardev_open_socket);
4343 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
4344 qmp_chardev_open_udp);
4345 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4346 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
4347 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
4348 qemu_chr_parse_file_out, qmp_chardev_open_file);
4349 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
4350 qemu_chr_parse_stdio, qemu_chr_open_stdio);
4351 #if defined HAVE_CHARDEV_SERIAL
4352 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
4353 qemu_chr_parse_serial, qmp_chardev_open_serial);
4354 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
4355 qemu_chr_parse_serial, qmp_chardev_open_serial);
4357 #ifdef HAVE_CHARDEV_PARPORT
4358 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4359 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4360 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4361 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4363 #ifdef HAVE_CHARDEV_PTY
4364 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
4368 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
4369 qemu_chr_open_win_con);
4371 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
4372 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4373 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
4375 /* Bug-compatibility: */
4376 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
4377 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
4378 /* this must be done after machine init, since we register FEs with muxes
4379 * as part of realize functions like serial_isa_realizefn when -nographic
4382 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
4385 type_init(register_types);