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"
35 #include "qemu/base64.h"
45 #include <sys/times.h>
49 #include <sys/ioctl.h>
50 #include <sys/resource.h>
51 #include <sys/socket.h>
52 #include <netinet/in.h>
54 #include <arpa/inet.h>
56 #include <sys/select.h>
59 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60 #include <dev/ppbus/ppi.h>
61 #include <dev/ppbus/ppbconf.h>
62 #elif defined(__DragonFly__)
63 #include <dev/misc/ppi/ppi.h>
64 #include <bus/ppbus/ppbconf.h>
68 #include <linux/ppdev.h>
69 #include <linux/parport.h>
73 #include <sys/ethernet.h>
74 #include <sys/sockio.h>
75 #include <netinet/arp.h>
76 #include <netinet/in.h>
77 #include <netinet/in_systm.h>
78 #include <netinet/ip.h>
79 #include <netinet/ip_icmp.h> // must come after ip.h
80 #include <netinet/udp.h>
81 #include <netinet/tcp.h>
86 #include "qemu/sockets.h"
87 #include "ui/qemu-spice.h"
89 #define READ_BUF_LEN 4096
90 #define READ_RETRIES 10
91 #define CHR_MAX_FILENAME_SIZE 256
92 #define TCP_MAX_FDS 16
94 /***********************************************************/
95 /* Socket address helpers */
97 static int SocketAddress_to_str(char *dest
, int max_len
,
98 const char *prefix
, SocketAddress
*addr
,
99 bool is_listen
, bool is_telnet
)
101 switch (addr
->type
) {
102 case SOCKET_ADDRESS_KIND_INET
:
103 return snprintf(dest
, max_len
, "%s%s:%s:%s%s", prefix
,
104 is_telnet
? "telnet" : "tcp", addr
->u
.inet
->host
,
105 addr
->u
.inet
->port
, is_listen
? ",server" : "");
107 case SOCKET_ADDRESS_KIND_UNIX
:
108 return snprintf(dest
, max_len
, "%sunix:%s%s", prefix
,
109 addr
->u
.q_unix
->path
, is_listen
? ",server" : "");
111 case SOCKET_ADDRESS_KIND_FD
:
112 return snprintf(dest
, max_len
, "%sfd:%s%s", prefix
, addr
->u
.fd
->str
,
113 is_listen
? ",server" : "");
120 static int sockaddr_to_str(char *dest
, int max_len
,
121 struct sockaddr_storage
*ss
, socklen_t ss_len
,
122 struct sockaddr_storage
*ps
, socklen_t ps_len
,
123 bool is_listen
, bool is_telnet
)
125 char shost
[NI_MAXHOST
], sserv
[NI_MAXSERV
];
126 char phost
[NI_MAXHOST
], pserv
[NI_MAXSERV
];
127 const char *left
= "", *right
= "";
129 switch (ss
->ss_family
) {
132 return snprintf(dest
, max_len
, "unix:%s%s",
133 ((struct sockaddr_un
*)(ss
))->sun_path
,
134 is_listen
? ",server" : "");
141 getnameinfo((struct sockaddr
*) ss
, ss_len
, shost
, sizeof(shost
),
142 sserv
, sizeof(sserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
143 getnameinfo((struct sockaddr
*) ps
, ps_len
, phost
, sizeof(phost
),
144 pserv
, sizeof(pserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
145 return snprintf(dest
, max_len
, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
146 is_telnet
? "telnet" : "tcp",
147 left
, shost
, right
, sserv
,
148 is_listen
? ",server" : "",
149 left
, phost
, right
, pserv
);
152 return snprintf(dest
, max_len
, "unknown");
156 /***********************************************************/
157 /* character device */
159 static QTAILQ_HEAD(CharDriverStateHead
, CharDriverState
) chardevs
=
160 QTAILQ_HEAD_INITIALIZER(chardevs
);
162 CharDriverState
*qemu_chr_alloc(void)
164 CharDriverState
*chr
= g_malloc0(sizeof(CharDriverState
));
165 qemu_mutex_init(&chr
->chr_write_lock
);
169 void qemu_chr_be_event(CharDriverState
*s
, int event
)
171 /* Keep track if the char device is open */
173 case CHR_EVENT_OPENED
:
176 case CHR_EVENT_CLOSED
:
183 s
->chr_event(s
->handler_opaque
, event
);
186 void qemu_chr_be_generic_open(CharDriverState
*s
)
188 qemu_chr_be_event(s
, CHR_EVENT_OPENED
);
191 int qemu_chr_fe_write(CharDriverState
*s
, const uint8_t *buf
, int len
)
195 qemu_mutex_lock(&s
->chr_write_lock
);
196 ret
= s
->chr_write(s
, buf
, len
);
197 qemu_mutex_unlock(&s
->chr_write_lock
);
201 int qemu_chr_fe_write_all(CharDriverState
*s
, const uint8_t *buf
, int len
)
206 qemu_mutex_lock(&s
->chr_write_lock
);
207 while (offset
< len
) {
209 res
= s
->chr_write(s
, buf
+ offset
, len
- offset
);
210 if (res
== -1 && errno
== EAGAIN
) {
213 } while (res
== -1 && errno
== EAGAIN
);
221 qemu_mutex_unlock(&s
->chr_write_lock
);
229 int qemu_chr_fe_read_all(CharDriverState
*s
, uint8_t *buf
, int len
)
231 int offset
= 0, counter
= 10;
234 if (!s
->chr_sync_read
) {
238 while (offset
< len
) {
240 res
= s
->chr_sync_read(s
, buf
+ offset
, len
- offset
);
241 if (res
== -1 && errno
== EAGAIN
) {
244 } while (res
== -1 && errno
== EAGAIN
);
264 int qemu_chr_fe_ioctl(CharDriverState
*s
, int cmd
, void *arg
)
268 return s
->chr_ioctl(s
, cmd
, arg
);
271 int qemu_chr_be_can_write(CharDriverState
*s
)
273 if (!s
->chr_can_read
)
275 return s
->chr_can_read(s
->handler_opaque
);
278 void qemu_chr_be_write(CharDriverState
*s
, uint8_t *buf
, int len
)
281 s
->chr_read(s
->handler_opaque
, buf
, len
);
285 int qemu_chr_fe_get_msgfd(CharDriverState
*s
)
288 return (qemu_chr_fe_get_msgfds(s
, &fd
, 1) == 1) ? fd
: -1;
291 int qemu_chr_fe_get_msgfds(CharDriverState
*s
, int *fds
, int len
)
293 return s
->get_msgfds
? s
->get_msgfds(s
, fds
, len
) : -1;
296 int qemu_chr_fe_set_msgfds(CharDriverState
*s
, int *fds
, int num
)
298 return s
->set_msgfds
? s
->set_msgfds(s
, fds
, num
) : -1;
301 int qemu_chr_add_client(CharDriverState
*s
, int fd
)
303 return s
->chr_add_client
? s
->chr_add_client(s
, fd
) : -1;
306 void qemu_chr_accept_input(CharDriverState
*s
)
308 if (s
->chr_accept_input
)
309 s
->chr_accept_input(s
);
313 void qemu_chr_fe_printf(CharDriverState
*s
, const char *fmt
, ...)
315 char buf
[READ_BUF_LEN
];
318 vsnprintf(buf
, sizeof(buf
), fmt
, ap
);
319 qemu_chr_fe_write(s
, (uint8_t *)buf
, strlen(buf
));
323 static void remove_fd_in_watch(CharDriverState
*chr
);
325 void qemu_chr_add_handlers(CharDriverState
*s
,
326 IOCanReadHandler
*fd_can_read
,
327 IOReadHandler
*fd_read
,
328 IOEventHandler
*fd_event
,
333 if (!opaque
&& !fd_can_read
&& !fd_read
&& !fd_event
) {
335 remove_fd_in_watch(s
);
339 s
->chr_can_read
= fd_can_read
;
340 s
->chr_read
= fd_read
;
341 s
->chr_event
= fd_event
;
342 s
->handler_opaque
= opaque
;
343 if (fe_open
&& s
->chr_update_read_handler
)
344 s
->chr_update_read_handler(s
);
346 if (!s
->explicit_fe_open
) {
347 qemu_chr_fe_set_open(s
, fe_open
);
350 /* We're connecting to an already opened device, so let's make sure we
351 also get the open event */
352 if (fe_open
&& s
->be_open
) {
353 qemu_chr_be_generic_open(s
);
357 static int null_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
362 static CharDriverState
*qemu_chr_open_null(const char *id
,
363 ChardevBackend
*backend
,
367 CharDriverState
*chr
;
369 chr
= qemu_chr_alloc();
370 chr
->chr_write
= null_chr_write
;
371 chr
->explicit_be_open
= true;
375 /* MUX driver for serial I/O splitting */
377 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
378 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
380 IOCanReadHandler
*chr_can_read
[MAX_MUX
];
381 IOReadHandler
*chr_read
[MAX_MUX
];
382 IOEventHandler
*chr_event
[MAX_MUX
];
383 void *ext_opaque
[MAX_MUX
];
384 CharDriverState
*drv
;
389 /* Intermediate input buffer allows to catch escape sequences even if the
390 currently active device is not accepting any input - but only until it
392 unsigned char buffer
[MAX_MUX
][MUX_BUFFER_SIZE
];
397 /* Protected by the CharDriverState chr_write_lock. */
399 int64_t timestamps_start
;
403 /* Called with chr_write_lock held. */
404 static int mux_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
406 MuxDriver
*d
= chr
->opaque
;
408 if (!d
->timestamps
) {
409 ret
= qemu_chr_fe_write(d
->drv
, buf
, len
);
414 for (i
= 0; i
< len
; i
++) {
420 ti
= qemu_clock_get_ms(QEMU_CLOCK_REALTIME
);
421 if (d
->timestamps_start
== -1)
422 d
->timestamps_start
= ti
;
423 ti
-= d
->timestamps_start
;
425 snprintf(buf1
, sizeof(buf1
),
426 "[%02d:%02d:%02d.%03d] ",
431 qemu_chr_fe_write(d
->drv
, (uint8_t *)buf1
, strlen(buf1
));
434 ret
+= qemu_chr_fe_write(d
->drv
, buf
+i
, 1);
435 if (buf
[i
] == '\n') {
443 static const char * const mux_help
[] = {
444 "% h print this help\n\r",
445 "% x exit emulator\n\r",
446 "% s save disk data back to file (if -snapshot)\n\r",
447 "% t toggle console timestamps\n\r",
448 "% b send break (magic sysrq)\n\r",
449 "% c switch between console and monitor\n\r",
454 int term_escape_char
= 0x01; /* ctrl-a is used for escape */
455 static void mux_print_help(CharDriverState
*chr
)
458 char ebuf
[15] = "Escape-Char";
459 char cbuf
[50] = "\n\r";
461 if (term_escape_char
> 0 && term_escape_char
< 26) {
462 snprintf(cbuf
, sizeof(cbuf
), "\n\r");
463 snprintf(ebuf
, sizeof(ebuf
), "C-%c", term_escape_char
- 1 + 'a');
465 snprintf(cbuf
, sizeof(cbuf
),
466 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
469 qemu_chr_fe_write(chr
, (uint8_t *)cbuf
, strlen(cbuf
));
470 for (i
= 0; mux_help
[i
] != NULL
; i
++) {
471 for (j
=0; mux_help
[i
][j
] != '\0'; j
++) {
472 if (mux_help
[i
][j
] == '%')
473 qemu_chr_fe_write(chr
, (uint8_t *)ebuf
, strlen(ebuf
));
475 qemu_chr_fe_write(chr
, (uint8_t *)&mux_help
[i
][j
], 1);
480 static void mux_chr_send_event(MuxDriver
*d
, int mux_nr
, int event
)
482 if (d
->chr_event
[mux_nr
])
483 d
->chr_event
[mux_nr
](d
->ext_opaque
[mux_nr
], event
);
486 static int mux_proc_byte(CharDriverState
*chr
, MuxDriver
*d
, int ch
)
488 if (d
->term_got_escape
) {
489 d
->term_got_escape
= 0;
490 if (ch
== term_escape_char
)
499 const char *term
= "QEMU: Terminated\n\r";
500 qemu_chr_fe_write(chr
, (uint8_t *)term
, strlen(term
));
508 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
511 /* Switch to the next registered device */
512 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_OUT
);
514 if (d
->focus
>= d
->mux_cnt
)
516 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_IN
);
519 d
->timestamps
= !d
->timestamps
;
520 d
->timestamps_start
= -1;
524 } else if (ch
== term_escape_char
) {
525 d
->term_got_escape
= 1;
533 static void mux_chr_accept_input(CharDriverState
*chr
)
535 MuxDriver
*d
= chr
->opaque
;
538 while (d
->prod
[m
] != d
->cons
[m
] &&
539 d
->chr_can_read
[m
] &&
540 d
->chr_can_read
[m
](d
->ext_opaque
[m
])) {
541 d
->chr_read
[m
](d
->ext_opaque
[m
],
542 &d
->buffer
[m
][d
->cons
[m
]++ & MUX_BUFFER_MASK
], 1);
546 static int mux_chr_can_read(void *opaque
)
548 CharDriverState
*chr
= opaque
;
549 MuxDriver
*d
= chr
->opaque
;
552 if ((d
->prod
[m
] - d
->cons
[m
]) < MUX_BUFFER_SIZE
)
554 if (d
->chr_can_read
[m
])
555 return d
->chr_can_read
[m
](d
->ext_opaque
[m
]);
559 static void mux_chr_read(void *opaque
, const uint8_t *buf
, int size
)
561 CharDriverState
*chr
= opaque
;
562 MuxDriver
*d
= chr
->opaque
;
566 mux_chr_accept_input (opaque
);
568 for(i
= 0; i
< size
; i
++)
569 if (mux_proc_byte(chr
, d
, buf
[i
])) {
570 if (d
->prod
[m
] == d
->cons
[m
] &&
571 d
->chr_can_read
[m
] &&
572 d
->chr_can_read
[m
](d
->ext_opaque
[m
]))
573 d
->chr_read
[m
](d
->ext_opaque
[m
], &buf
[i
], 1);
575 d
->buffer
[m
][d
->prod
[m
]++ & MUX_BUFFER_MASK
] = buf
[i
];
579 static void mux_chr_event(void *opaque
, int event
)
581 CharDriverState
*chr
= opaque
;
582 MuxDriver
*d
= chr
->opaque
;
585 /* Send the event to all registered listeners */
586 for (i
= 0; i
< d
->mux_cnt
; i
++)
587 mux_chr_send_event(d
, i
, event
);
590 static void mux_chr_update_read_handler(CharDriverState
*chr
)
592 MuxDriver
*d
= chr
->opaque
;
594 if (d
->mux_cnt
>= MAX_MUX
) {
595 fprintf(stderr
, "Cannot add I/O handlers, MUX array is full\n");
598 d
->ext_opaque
[d
->mux_cnt
] = chr
->handler_opaque
;
599 d
->chr_can_read
[d
->mux_cnt
] = chr
->chr_can_read
;
600 d
->chr_read
[d
->mux_cnt
] = chr
->chr_read
;
601 d
->chr_event
[d
->mux_cnt
] = chr
->chr_event
;
602 /* Fix up the real driver with mux routines */
603 if (d
->mux_cnt
== 0) {
604 qemu_chr_add_handlers(d
->drv
, mux_chr_can_read
, mux_chr_read
,
607 if (d
->focus
!= -1) {
608 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_OUT
);
610 d
->focus
= d
->mux_cnt
;
612 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_IN
);
615 static bool muxes_realized
;
618 * Called after processing of default and command-line-specified
619 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
620 * to a mux chardev. This is done here to ensure that
621 * output/prompts/banners are only displayed for the FE that has
622 * focus when initial command-line processing/machine init is
625 * After this point, any new FE attached to any new or existing
626 * mux will receive CHR_EVENT_OPENED notifications for the BE
629 static void muxes_realize_done(Notifier
*notifier
, void *unused
)
631 CharDriverState
*chr
;
633 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
635 MuxDriver
*d
= chr
->opaque
;
638 /* send OPENED to all already-attached FEs */
639 for (i
= 0; i
< d
->mux_cnt
; i
++) {
640 mux_chr_send_event(d
, i
, CHR_EVENT_OPENED
);
642 /* mark mux as OPENED so any new FEs will immediately receive
645 qemu_chr_be_generic_open(chr
);
648 muxes_realized
= true;
651 static Notifier muxes_realize_notify
= {
652 .notify
= muxes_realize_done
,
655 static GSource
*mux_chr_add_watch(CharDriverState
*s
, GIOCondition cond
)
657 MuxDriver
*d
= s
->opaque
;
658 return d
->drv
->chr_add_watch(d
->drv
, cond
);
661 static CharDriverState
*qemu_chr_open_mux(const char *id
,
662 ChardevBackend
*backend
,
663 ChardevReturn
*ret
, Error
**errp
)
665 ChardevMux
*mux
= backend
->u
.mux
;
666 CharDriverState
*chr
, *drv
;
669 drv
= qemu_chr_find(mux
->chardev
);
671 error_setg(errp
, "mux: base chardev %s not found", mux
->chardev
);
675 chr
= qemu_chr_alloc();
676 d
= g_new0(MuxDriver
, 1);
681 chr
->chr_write
= mux_chr_write
;
682 chr
->chr_update_read_handler
= mux_chr_update_read_handler
;
683 chr
->chr_accept_input
= mux_chr_accept_input
;
684 /* Frontend guest-open / -close notification is not support with muxes */
685 chr
->chr_set_fe_open
= NULL
;
686 if (drv
->chr_add_watch
) {
687 chr
->chr_add_watch
= mux_chr_add_watch
;
689 /* only default to opened state if we've realized the initial
692 chr
->explicit_be_open
= muxes_realized
? 0 : 1;
699 typedef struct IOWatchPoll
706 IOCanReadHandler
*fd_can_read
;
711 static IOWatchPoll
*io_watch_poll_from_source(GSource
*source
)
713 return container_of(source
, IOWatchPoll
, parent
);
716 static gboolean
io_watch_poll_prepare(GSource
*source
, gint
*timeout_
)
718 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
719 bool now_active
= iwp
->fd_can_read(iwp
->opaque
) > 0;
720 bool was_active
= iwp
->src
!= NULL
;
721 if (was_active
== now_active
) {
726 iwp
->src
= g_io_create_watch(iwp
->channel
,
727 G_IO_IN
| G_IO_ERR
| G_IO_HUP
| G_IO_NVAL
);
728 g_source_set_callback(iwp
->src
, iwp
->fd_read
, iwp
->opaque
, NULL
);
729 g_source_attach(iwp
->src
, NULL
);
731 g_source_destroy(iwp
->src
);
732 g_source_unref(iwp
->src
);
738 static gboolean
io_watch_poll_check(GSource
*source
)
743 static gboolean
io_watch_poll_dispatch(GSource
*source
, GSourceFunc callback
,
749 static void io_watch_poll_finalize(GSource
*source
)
751 /* Due to a glib bug, removing the last reference to a source
752 * inside a finalize callback causes recursive locking (and a
753 * deadlock). This is not a problem inside other callbacks,
754 * including dispatch callbacks, so we call io_remove_watch_poll
755 * to remove this source. At this point, iwp->src must
756 * be NULL, or we would leak it.
758 * This would be solved much more elegantly by child sources,
759 * but we support older glib versions that do not have them.
761 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
762 assert(iwp
->src
== NULL
);
765 static GSourceFuncs io_watch_poll_funcs
= {
766 .prepare
= io_watch_poll_prepare
,
767 .check
= io_watch_poll_check
,
768 .dispatch
= io_watch_poll_dispatch
,
769 .finalize
= io_watch_poll_finalize
,
772 /* Can only be used for read */
773 static guint
io_add_watch_poll(GIOChannel
*channel
,
774 IOCanReadHandler
*fd_can_read
,
781 iwp
= (IOWatchPoll
*) g_source_new(&io_watch_poll_funcs
, sizeof(IOWatchPoll
));
782 iwp
->fd_can_read
= fd_can_read
;
783 iwp
->opaque
= user_data
;
784 iwp
->channel
= channel
;
785 iwp
->fd_read
= (GSourceFunc
) fd_read
;
788 tag
= g_source_attach(&iwp
->parent
, NULL
);
789 g_source_unref(&iwp
->parent
);
793 static void io_remove_watch_poll(guint tag
)
798 g_return_if_fail (tag
> 0);
800 source
= g_main_context_find_source_by_id(NULL
, tag
);
801 g_return_if_fail (source
!= NULL
);
803 iwp
= io_watch_poll_from_source(source
);
805 g_source_destroy(iwp
->src
);
806 g_source_unref(iwp
->src
);
809 g_source_destroy(&iwp
->parent
);
812 static void remove_fd_in_watch(CharDriverState
*chr
)
814 if (chr
->fd_in_tag
) {
815 io_remove_watch_poll(chr
->fd_in_tag
);
821 static GIOChannel
*io_channel_from_fd(int fd
)
829 chan
= g_io_channel_unix_new(fd
);
831 g_io_channel_set_encoding(chan
, NULL
, NULL
);
832 g_io_channel_set_buffered(chan
, FALSE
);
838 static GIOChannel
*io_channel_from_socket(int fd
)
847 chan
= g_io_channel_win32_new_socket(fd
);
849 chan
= g_io_channel_unix_new(fd
);
852 g_io_channel_set_encoding(chan
, NULL
, NULL
);
853 g_io_channel_set_buffered(chan
, FALSE
);
858 static int io_channel_send(GIOChannel
*fd
, const void *buf
, size_t len
)
861 GIOStatus status
= G_IO_STATUS_NORMAL
;
863 while (offset
< len
&& status
== G_IO_STATUS_NORMAL
) {
864 gsize bytes_written
= 0;
866 status
= g_io_channel_write_chars(fd
, buf
+ offset
, len
- offset
,
867 &bytes_written
, NULL
);
868 offset
+= bytes_written
;
875 case G_IO_STATUS_NORMAL
:
878 case G_IO_STATUS_AGAIN
:
890 typedef struct FDCharDriver
{
891 CharDriverState
*chr
;
892 GIOChannel
*fd_in
, *fd_out
;
896 /* Called with chr_write_lock held. */
897 static int fd_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
899 FDCharDriver
*s
= chr
->opaque
;
901 return io_channel_send(s
->fd_out
, buf
, len
);
904 static gboolean
fd_chr_read(GIOChannel
*chan
, GIOCondition cond
, void *opaque
)
906 CharDriverState
*chr
= opaque
;
907 FDCharDriver
*s
= chr
->opaque
;
909 uint8_t buf
[READ_BUF_LEN
];
914 if (len
> s
->max_size
) {
921 status
= g_io_channel_read_chars(chan
, (gchar
*)buf
,
922 len
, &bytes_read
, NULL
);
923 if (status
== G_IO_STATUS_EOF
) {
924 remove_fd_in_watch(chr
);
925 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
928 if (status
== G_IO_STATUS_NORMAL
) {
929 qemu_chr_be_write(chr
, buf
, bytes_read
);
935 static int fd_chr_read_poll(void *opaque
)
937 CharDriverState
*chr
= opaque
;
938 FDCharDriver
*s
= chr
->opaque
;
940 s
->max_size
= qemu_chr_be_can_write(chr
);
944 static GSource
*fd_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
946 FDCharDriver
*s
= chr
->opaque
;
947 return g_io_create_watch(s
->fd_out
, cond
);
950 static void fd_chr_update_read_handler(CharDriverState
*chr
)
952 FDCharDriver
*s
= chr
->opaque
;
954 remove_fd_in_watch(chr
);
956 chr
->fd_in_tag
= io_add_watch_poll(s
->fd_in
, fd_chr_read_poll
,
961 static void fd_chr_close(struct CharDriverState
*chr
)
963 FDCharDriver
*s
= chr
->opaque
;
965 remove_fd_in_watch(chr
);
967 g_io_channel_unref(s
->fd_in
);
970 g_io_channel_unref(s
->fd_out
);
974 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
977 /* open a character device to a unix fd */
978 static CharDriverState
*qemu_chr_open_fd(int fd_in
, int fd_out
)
980 CharDriverState
*chr
;
983 chr
= qemu_chr_alloc();
984 s
= g_new0(FDCharDriver
, 1);
985 s
->fd_in
= io_channel_from_fd(fd_in
);
986 s
->fd_out
= io_channel_from_fd(fd_out
);
987 qemu_set_nonblock(fd_out
);
990 chr
->chr_add_watch
= fd_chr_add_watch
;
991 chr
->chr_write
= fd_chr_write
;
992 chr
->chr_update_read_handler
= fd_chr_update_read_handler
;
993 chr
->chr_close
= fd_chr_close
;
998 static CharDriverState
*qemu_chr_open_pipe(const char *id
,
999 ChardevBackend
*backend
,
1003 ChardevHostdev
*opts
= backend
->u
.pipe
;
1005 char filename_in
[CHR_MAX_FILENAME_SIZE
];
1006 char filename_out
[CHR_MAX_FILENAME_SIZE
];
1007 const char *filename
= opts
->device
;
1009 snprintf(filename_in
, CHR_MAX_FILENAME_SIZE
, "%s.in", filename
);
1010 snprintf(filename_out
, CHR_MAX_FILENAME_SIZE
, "%s.out", filename
);
1011 TFR(fd_in
= qemu_open(filename_in
, O_RDWR
| O_BINARY
));
1012 TFR(fd_out
= qemu_open(filename_out
, O_RDWR
| O_BINARY
));
1013 if (fd_in
< 0 || fd_out
< 0) {
1018 TFR(fd_in
= fd_out
= qemu_open(filename
, O_RDWR
| O_BINARY
));
1020 error_setg_file_open(errp
, errno
, filename
);
1024 return qemu_chr_open_fd(fd_in
, fd_out
);
1027 /* init terminal so that we can grab keys */
1028 static struct termios oldtty
;
1029 static int old_fd0_flags
;
1030 static bool stdio_in_use
;
1031 static bool stdio_allow_signal
;
1032 static bool stdio_echo_state
;
1034 static void qemu_chr_set_echo_stdio(CharDriverState
*chr
, bool echo
);
1036 static void term_exit(void)
1038 tcsetattr (0, TCSANOW
, &oldtty
);
1039 fcntl(0, F_SETFL
, old_fd0_flags
);
1042 static void term_stdio_handler(int sig
)
1044 /* restore echo after resume from suspend. */
1045 qemu_chr_set_echo_stdio(NULL
, stdio_echo_state
);
1048 static void qemu_chr_set_echo_stdio(CharDriverState
*chr
, bool echo
)
1052 stdio_echo_state
= echo
;
1055 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1056 |INLCR
|IGNCR
|ICRNL
|IXON
);
1057 tty
.c_oflag
|= OPOST
;
1058 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
);
1059 tty
.c_cflag
&= ~(CSIZE
|PARENB
);
1062 tty
.c_cc
[VTIME
] = 0;
1064 if (!stdio_allow_signal
)
1065 tty
.c_lflag
&= ~ISIG
;
1067 tcsetattr (0, TCSANOW
, &tty
);
1070 static void qemu_chr_close_stdio(struct CharDriverState
*chr
)
1076 static CharDriverState
*qemu_chr_open_stdio(const char *id
,
1077 ChardevBackend
*backend
,
1081 ChardevStdio
*opts
= backend
->u
.stdio
;
1082 CharDriverState
*chr
;
1083 struct sigaction act
;
1085 if (is_daemonized()) {
1086 error_setg(errp
, "cannot use stdio with -daemonize");
1091 error_setg(errp
, "cannot use stdio by multiple character devices");
1095 stdio_in_use
= true;
1096 old_fd0_flags
= fcntl(0, F_GETFL
);
1097 tcgetattr(0, &oldtty
);
1098 qemu_set_nonblock(0);
1101 memset(&act
, 0, sizeof(act
));
1102 act
.sa_handler
= term_stdio_handler
;
1103 sigaction(SIGCONT
, &act
, NULL
);
1105 chr
= qemu_chr_open_fd(0, 1);
1106 chr
->chr_close
= qemu_chr_close_stdio
;
1107 chr
->chr_set_echo
= qemu_chr_set_echo_stdio
;
1108 if (opts
->has_signal
) {
1109 stdio_allow_signal
= opts
->signal
;
1111 qemu_chr_fe_set_echo(chr
, false);
1116 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1117 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1118 || defined(__GLIBC__)
1120 #define HAVE_CHARDEV_SERIAL 1
1121 #define HAVE_CHARDEV_PTY 1
1127 /* Protected by the CharDriverState chr_write_lock. */
1133 static void pty_chr_update_read_handler_locked(CharDriverState
*chr
);
1134 static void pty_chr_state(CharDriverState
*chr
, int connected
);
1136 static gboolean
pty_chr_timer(gpointer opaque
)
1138 struct CharDriverState
*chr
= opaque
;
1139 PtyCharDriver
*s
= chr
->opaque
;
1141 qemu_mutex_lock(&chr
->chr_write_lock
);
1144 if (!s
->connected
) {
1146 pty_chr_update_read_handler_locked(chr
);
1148 qemu_mutex_unlock(&chr
->chr_write_lock
);
1152 /* Called with chr_write_lock held. */
1153 static void pty_chr_rearm_timer(CharDriverState
*chr
, int ms
)
1155 PtyCharDriver
*s
= chr
->opaque
;
1158 g_source_remove(s
->timer_tag
);
1163 s
->timer_tag
= g_timeout_add_seconds(1, pty_chr_timer
, chr
);
1165 s
->timer_tag
= g_timeout_add(ms
, pty_chr_timer
, chr
);
1169 /* Called with chr_write_lock held. */
1170 static void pty_chr_update_read_handler_locked(CharDriverState
*chr
)
1172 PtyCharDriver
*s
= chr
->opaque
;
1176 pfd
.fd
= g_io_channel_unix_get_fd(s
->fd
);
1177 pfd
.events
= G_IO_OUT
;
1180 rc
= g_poll(&pfd
, 1, 0);
1181 } while (rc
== -1 && errno
== EINTR
);
1184 if (pfd
.revents
& G_IO_HUP
) {
1185 pty_chr_state(chr
, 0);
1187 pty_chr_state(chr
, 1);
1191 static void pty_chr_update_read_handler(CharDriverState
*chr
)
1193 qemu_mutex_lock(&chr
->chr_write_lock
);
1194 pty_chr_update_read_handler_locked(chr
);
1195 qemu_mutex_unlock(&chr
->chr_write_lock
);
1198 /* Called with chr_write_lock held. */
1199 static int pty_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
1201 PtyCharDriver
*s
= chr
->opaque
;
1203 if (!s
->connected
) {
1204 /* guest sends data, check for (re-)connect */
1205 pty_chr_update_read_handler_locked(chr
);
1206 if (!s
->connected
) {
1210 return io_channel_send(s
->fd
, buf
, len
);
1213 static GSource
*pty_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
1215 PtyCharDriver
*s
= chr
->opaque
;
1216 if (!s
->connected
) {
1219 return g_io_create_watch(s
->fd
, cond
);
1222 static int pty_chr_read_poll(void *opaque
)
1224 CharDriverState
*chr
= opaque
;
1225 PtyCharDriver
*s
= chr
->opaque
;
1227 s
->read_bytes
= qemu_chr_be_can_write(chr
);
1228 return s
->read_bytes
;
1231 static gboolean
pty_chr_read(GIOChannel
*chan
, GIOCondition cond
, void *opaque
)
1233 CharDriverState
*chr
= opaque
;
1234 PtyCharDriver
*s
= chr
->opaque
;
1236 uint8_t buf
[READ_BUF_LEN
];
1240 if (len
> s
->read_bytes
)
1241 len
= s
->read_bytes
;
1245 status
= g_io_channel_read_chars(s
->fd
, (gchar
*)buf
, len
, &size
, NULL
);
1246 if (status
!= G_IO_STATUS_NORMAL
) {
1247 pty_chr_state(chr
, 0);
1250 pty_chr_state(chr
, 1);
1251 qemu_chr_be_write(chr
, buf
, size
);
1256 static gboolean
qemu_chr_be_generic_open_func(gpointer opaque
)
1258 CharDriverState
*chr
= opaque
;
1259 PtyCharDriver
*s
= chr
->opaque
;
1262 qemu_chr_be_generic_open(chr
);
1266 /* Called with chr_write_lock held. */
1267 static void pty_chr_state(CharDriverState
*chr
, int connected
)
1269 PtyCharDriver
*s
= chr
->opaque
;
1273 g_source_remove(s
->open_tag
);
1276 remove_fd_in_watch(chr
);
1278 /* (re-)connect poll interval for idle guests: once per second.
1279 * We check more frequently in case the guests sends data to
1280 * the virtual device linked to our pty. */
1281 pty_chr_rearm_timer(chr
, 1000);
1284 g_source_remove(s
->timer_tag
);
1287 if (!s
->connected
) {
1288 g_assert(s
->open_tag
== 0);
1290 s
->open_tag
= g_idle_add(qemu_chr_be_generic_open_func
, chr
);
1292 if (!chr
->fd_in_tag
) {
1293 chr
->fd_in_tag
= io_add_watch_poll(s
->fd
, pty_chr_read_poll
,
1299 static void pty_chr_close(struct CharDriverState
*chr
)
1301 PtyCharDriver
*s
= chr
->opaque
;
1304 qemu_mutex_lock(&chr
->chr_write_lock
);
1305 pty_chr_state(chr
, 0);
1306 fd
= g_io_channel_unix_get_fd(s
->fd
);
1307 g_io_channel_unref(s
->fd
);
1310 g_source_remove(s
->timer_tag
);
1313 qemu_mutex_unlock(&chr
->chr_write_lock
);
1315 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1318 static CharDriverState
*qemu_chr_open_pty(const char *id
,
1319 ChardevBackend
*backend
,
1323 CharDriverState
*chr
;
1325 int master_fd
, slave_fd
;
1326 char pty_name
[PATH_MAX
];
1328 master_fd
= qemu_openpty_raw(&slave_fd
, pty_name
);
1329 if (master_fd
< 0) {
1330 error_setg_errno(errp
, errno
, "Failed to create PTY");
1335 qemu_set_nonblock(master_fd
);
1337 chr
= qemu_chr_alloc();
1339 chr
->filename
= g_strdup_printf("pty:%s", pty_name
);
1340 ret
->pty
= g_strdup(pty_name
);
1341 ret
->has_pty
= true;
1343 fprintf(stderr
, "char device redirected to %s (label %s)\n",
1346 s
= g_new0(PtyCharDriver
, 1);
1348 chr
->chr_write
= pty_chr_write
;
1349 chr
->chr_update_read_handler
= pty_chr_update_read_handler
;
1350 chr
->chr_close
= pty_chr_close
;
1351 chr
->chr_add_watch
= pty_chr_add_watch
;
1352 chr
->explicit_be_open
= true;
1354 s
->fd
= io_channel_from_fd(master_fd
);
1360 static void tty_serial_init(int fd
, int speed
,
1361 int parity
, int data_bits
, int stop_bits
)
1367 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1368 speed
, parity
, data_bits
, stop_bits
);
1370 tcgetattr (fd
, &tty
);
1372 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1373 speed
= speed
* 10 / 11;
1390 /* Non-Posix values follow. They may be unsupported on some systems. */
1392 check_speed(115200);
1394 check_speed(230400);
1397 check_speed(460800);
1400 check_speed(500000);
1403 check_speed(576000);
1406 check_speed(921600);
1409 check_speed(1000000);
1412 check_speed(1152000);
1415 check_speed(1500000);
1418 check_speed(2000000);
1421 check_speed(2500000);
1424 check_speed(3000000);
1427 check_speed(3500000);
1430 check_speed(4000000);
1435 cfsetispeed(&tty
, spd
);
1436 cfsetospeed(&tty
, spd
);
1438 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1439 |INLCR
|IGNCR
|ICRNL
|IXON
);
1440 tty
.c_oflag
|= OPOST
;
1441 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
|ISIG
);
1442 tty
.c_cflag
&= ~(CSIZE
|PARENB
|PARODD
|CRTSCTS
|CSTOPB
);
1463 tty
.c_cflag
|= PARENB
;
1466 tty
.c_cflag
|= PARENB
| PARODD
;
1470 tty
.c_cflag
|= CSTOPB
;
1472 tcsetattr (fd
, TCSANOW
, &tty
);
1475 static int tty_serial_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
1477 FDCharDriver
*s
= chr
->opaque
;
1480 case CHR_IOCTL_SERIAL_SET_PARAMS
:
1482 QEMUSerialSetParams
*ssp
= arg
;
1483 tty_serial_init(g_io_channel_unix_get_fd(s
->fd_in
),
1484 ssp
->speed
, ssp
->parity
,
1485 ssp
->data_bits
, ssp
->stop_bits
);
1488 case CHR_IOCTL_SERIAL_SET_BREAK
:
1490 int enable
= *(int *)arg
;
1492 tcsendbreak(g_io_channel_unix_get_fd(s
->fd_in
), 1);
1496 case CHR_IOCTL_SERIAL_GET_TIOCM
:
1499 int *targ
= (int *)arg
;
1500 ioctl(g_io_channel_unix_get_fd(s
->fd_in
), TIOCMGET
, &sarg
);
1502 if (sarg
& TIOCM_CTS
)
1503 *targ
|= CHR_TIOCM_CTS
;
1504 if (sarg
& TIOCM_CAR
)
1505 *targ
|= CHR_TIOCM_CAR
;
1506 if (sarg
& TIOCM_DSR
)
1507 *targ
|= CHR_TIOCM_DSR
;
1508 if (sarg
& TIOCM_RI
)
1509 *targ
|= CHR_TIOCM_RI
;
1510 if (sarg
& TIOCM_DTR
)
1511 *targ
|= CHR_TIOCM_DTR
;
1512 if (sarg
& TIOCM_RTS
)
1513 *targ
|= CHR_TIOCM_RTS
;
1516 case CHR_IOCTL_SERIAL_SET_TIOCM
:
1518 int sarg
= *(int *)arg
;
1520 ioctl(g_io_channel_unix_get_fd(s
->fd_in
), TIOCMGET
, &targ
);
1521 targ
&= ~(CHR_TIOCM_CTS
| CHR_TIOCM_CAR
| CHR_TIOCM_DSR
1522 | CHR_TIOCM_RI
| CHR_TIOCM_DTR
| CHR_TIOCM_RTS
);
1523 if (sarg
& CHR_TIOCM_CTS
)
1525 if (sarg
& CHR_TIOCM_CAR
)
1527 if (sarg
& CHR_TIOCM_DSR
)
1529 if (sarg
& CHR_TIOCM_RI
)
1531 if (sarg
& CHR_TIOCM_DTR
)
1533 if (sarg
& CHR_TIOCM_RTS
)
1535 ioctl(g_io_channel_unix_get_fd(s
->fd_in
), TIOCMSET
, &targ
);
1544 static void qemu_chr_close_tty(CharDriverState
*chr
)
1546 FDCharDriver
*s
= chr
->opaque
;
1550 fd
= g_io_channel_unix_get_fd(s
->fd_in
);
1560 static CharDriverState
*qemu_chr_open_tty_fd(int fd
)
1562 CharDriverState
*chr
;
1564 tty_serial_init(fd
, 115200, 'N', 8, 1);
1565 chr
= qemu_chr_open_fd(fd
, fd
);
1566 chr
->chr_ioctl
= tty_serial_ioctl
;
1567 chr
->chr_close
= qemu_chr_close_tty
;
1570 #endif /* __linux__ || __sun__ */
1572 #if defined(__linux__)
1574 #define HAVE_CHARDEV_PARPORT 1
1579 } ParallelCharDriver
;
1581 static int pp_hw_mode(ParallelCharDriver
*s
, uint16_t mode
)
1583 if (s
->mode
!= mode
) {
1585 if (ioctl(s
->fd
, PPSETMODE
, &m
) < 0)
1592 static int pp_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
1594 ParallelCharDriver
*drv
= chr
->opaque
;
1599 case CHR_IOCTL_PP_READ_DATA
:
1600 if (ioctl(fd
, PPRDATA
, &b
) < 0)
1602 *(uint8_t *)arg
= b
;
1604 case CHR_IOCTL_PP_WRITE_DATA
:
1605 b
= *(uint8_t *)arg
;
1606 if (ioctl(fd
, PPWDATA
, &b
) < 0)
1609 case CHR_IOCTL_PP_READ_CONTROL
:
1610 if (ioctl(fd
, PPRCONTROL
, &b
) < 0)
1612 /* Linux gives only the lowest bits, and no way to know data
1613 direction! For better compatibility set the fixed upper
1615 *(uint8_t *)arg
= b
| 0xc0;
1617 case CHR_IOCTL_PP_WRITE_CONTROL
:
1618 b
= *(uint8_t *)arg
;
1619 if (ioctl(fd
, PPWCONTROL
, &b
) < 0)
1622 case CHR_IOCTL_PP_READ_STATUS
:
1623 if (ioctl(fd
, PPRSTATUS
, &b
) < 0)
1625 *(uint8_t *)arg
= b
;
1627 case CHR_IOCTL_PP_DATA_DIR
:
1628 if (ioctl(fd
, PPDATADIR
, (int *)arg
) < 0)
1631 case CHR_IOCTL_PP_EPP_READ_ADDR
:
1632 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
1633 struct ParallelIOArg
*parg
= arg
;
1634 int n
= read(fd
, parg
->buffer
, parg
->count
);
1635 if (n
!= parg
->count
) {
1640 case CHR_IOCTL_PP_EPP_READ
:
1641 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
1642 struct ParallelIOArg
*parg
= arg
;
1643 int n
= read(fd
, parg
->buffer
, parg
->count
);
1644 if (n
!= parg
->count
) {
1649 case CHR_IOCTL_PP_EPP_WRITE_ADDR
:
1650 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
1651 struct ParallelIOArg
*parg
= arg
;
1652 int n
= write(fd
, parg
->buffer
, parg
->count
);
1653 if (n
!= parg
->count
) {
1658 case CHR_IOCTL_PP_EPP_WRITE
:
1659 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
1660 struct ParallelIOArg
*parg
= arg
;
1661 int n
= write(fd
, parg
->buffer
, parg
->count
);
1662 if (n
!= parg
->count
) {
1673 static void pp_close(CharDriverState
*chr
)
1675 ParallelCharDriver
*drv
= chr
->opaque
;
1678 pp_hw_mode(drv
, IEEE1284_MODE_COMPAT
);
1679 ioctl(fd
, PPRELEASE
);
1682 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1685 static CharDriverState
*qemu_chr_open_pp_fd(int fd
, Error
**errp
)
1687 CharDriverState
*chr
;
1688 ParallelCharDriver
*drv
;
1690 if (ioctl(fd
, PPCLAIM
) < 0) {
1691 error_setg_errno(errp
, errno
, "not a parallel port");
1696 drv
= g_new0(ParallelCharDriver
, 1);
1698 drv
->mode
= IEEE1284_MODE_COMPAT
;
1700 chr
= qemu_chr_alloc();
1701 chr
->chr_write
= null_chr_write
;
1702 chr
->chr_ioctl
= pp_ioctl
;
1703 chr
->chr_close
= pp_close
;
1708 #endif /* __linux__ */
1710 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1712 #define HAVE_CHARDEV_PARPORT 1
1714 static int pp_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
1716 int fd
= (int)(intptr_t)chr
->opaque
;
1720 case CHR_IOCTL_PP_READ_DATA
:
1721 if (ioctl(fd
, PPIGDATA
, &b
) < 0)
1723 *(uint8_t *)arg
= b
;
1725 case CHR_IOCTL_PP_WRITE_DATA
:
1726 b
= *(uint8_t *)arg
;
1727 if (ioctl(fd
, PPISDATA
, &b
) < 0)
1730 case CHR_IOCTL_PP_READ_CONTROL
:
1731 if (ioctl(fd
, PPIGCTRL
, &b
) < 0)
1733 *(uint8_t *)arg
= b
;
1735 case CHR_IOCTL_PP_WRITE_CONTROL
:
1736 b
= *(uint8_t *)arg
;
1737 if (ioctl(fd
, PPISCTRL
, &b
) < 0)
1740 case CHR_IOCTL_PP_READ_STATUS
:
1741 if (ioctl(fd
, PPIGSTATUS
, &b
) < 0)
1743 *(uint8_t *)arg
= b
;
1751 static CharDriverState
*qemu_chr_open_pp_fd(int fd
, Error
**errp
)
1753 CharDriverState
*chr
;
1755 chr
= qemu_chr_alloc();
1756 chr
->opaque
= (void *)(intptr_t)fd
;
1757 chr
->chr_write
= null_chr_write
;
1758 chr
->chr_ioctl
= pp_ioctl
;
1759 chr
->explicit_be_open
= true;
1766 #define HAVE_CHARDEV_SERIAL 1
1770 HANDLE hcom
, hrecv
, hsend
;
1775 /* Protected by the CharDriverState chr_write_lock. */
1781 HANDLE hInputReadyEvent
;
1782 HANDLE hInputDoneEvent
;
1783 HANDLE hInputThread
;
1784 uint8_t win_stdio_buf
;
1785 } WinStdioCharState
;
1787 #define NSENDBUF 2048
1788 #define NRECVBUF 2048
1789 #define MAXCONNECT 1
1790 #define NTIMEOUT 5000
1792 static int win_chr_poll(void *opaque
);
1793 static int win_chr_pipe_poll(void *opaque
);
1795 static void win_chr_close(CharDriverState
*chr
)
1797 WinCharState
*s
= chr
->opaque
;
1800 CloseHandle(s
->hsend
);
1804 CloseHandle(s
->hrecv
);
1808 CloseHandle(s
->hcom
);
1812 qemu_del_polling_cb(win_chr_pipe_poll
, chr
);
1814 qemu_del_polling_cb(win_chr_poll
, chr
);
1816 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1819 static int win_chr_init(CharDriverState
*chr
, const char *filename
, Error
**errp
)
1821 WinCharState
*s
= chr
->opaque
;
1823 COMMTIMEOUTS cto
= { 0, 0, 0, 0, 0};
1828 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
1830 error_setg(errp
, "Failed CreateEvent");
1833 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
1835 error_setg(errp
, "Failed CreateEvent");
1839 s
->hcom
= CreateFile(filename
, GENERIC_READ
|GENERIC_WRITE
, 0, NULL
,
1840 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
1841 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
1842 error_setg(errp
, "Failed CreateFile (%lu)", GetLastError());
1847 if (!SetupComm(s
->hcom
, NRECVBUF
, NSENDBUF
)) {
1848 error_setg(errp
, "Failed SetupComm");
1852 ZeroMemory(&comcfg
, sizeof(COMMCONFIG
));
1853 size
= sizeof(COMMCONFIG
);
1854 GetDefaultCommConfig(filename
, &comcfg
, &size
);
1855 comcfg
.dcb
.DCBlength
= sizeof(DCB
);
1856 CommConfigDialog(filename
, NULL
, &comcfg
);
1858 if (!SetCommState(s
->hcom
, &comcfg
.dcb
)) {
1859 error_setg(errp
, "Failed SetCommState");
1863 if (!SetCommMask(s
->hcom
, EV_ERR
)) {
1864 error_setg(errp
, "Failed SetCommMask");
1868 cto
.ReadIntervalTimeout
= MAXDWORD
;
1869 if (!SetCommTimeouts(s
->hcom
, &cto
)) {
1870 error_setg(errp
, "Failed SetCommTimeouts");
1874 if (!ClearCommError(s
->hcom
, &err
, &comstat
)) {
1875 error_setg(errp
, "Failed ClearCommError");
1878 qemu_add_polling_cb(win_chr_poll
, chr
);
1886 /* Called with chr_write_lock held. */
1887 static int win_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len1
)
1889 WinCharState
*s
= chr
->opaque
;
1890 DWORD len
, ret
, size
, err
;
1893 ZeroMemory(&s
->osend
, sizeof(s
->osend
));
1894 s
->osend
.hEvent
= s
->hsend
;
1897 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, &s
->osend
);
1899 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, NULL
);
1901 err
= GetLastError();
1902 if (err
== ERROR_IO_PENDING
) {
1903 ret
= GetOverlappedResult(s
->hcom
, &s
->osend
, &size
, TRUE
);
1921 static int win_chr_read_poll(CharDriverState
*chr
)
1923 WinCharState
*s
= chr
->opaque
;
1925 s
->max_size
= qemu_chr_be_can_write(chr
);
1929 static void win_chr_readfile(CharDriverState
*chr
)
1931 WinCharState
*s
= chr
->opaque
;
1933 uint8_t buf
[READ_BUF_LEN
];
1936 ZeroMemory(&s
->orecv
, sizeof(s
->orecv
));
1937 s
->orecv
.hEvent
= s
->hrecv
;
1938 ret
= ReadFile(s
->hcom
, buf
, s
->len
, &size
, &s
->orecv
);
1940 err
= GetLastError();
1941 if (err
== ERROR_IO_PENDING
) {
1942 ret
= GetOverlappedResult(s
->hcom
, &s
->orecv
, &size
, TRUE
);
1947 qemu_chr_be_write(chr
, buf
, size
);
1951 static void win_chr_read(CharDriverState
*chr
)
1953 WinCharState
*s
= chr
->opaque
;
1955 if (s
->len
> s
->max_size
)
1956 s
->len
= s
->max_size
;
1960 win_chr_readfile(chr
);
1963 static int win_chr_poll(void *opaque
)
1965 CharDriverState
*chr
= opaque
;
1966 WinCharState
*s
= chr
->opaque
;
1970 ClearCommError(s
->hcom
, &comerr
, &status
);
1971 if (status
.cbInQue
> 0) {
1972 s
->len
= status
.cbInQue
;
1973 win_chr_read_poll(chr
);
1980 static CharDriverState
*qemu_chr_open_win_path(const char *filename
,
1983 CharDriverState
*chr
;
1986 chr
= qemu_chr_alloc();
1987 s
= g_new0(WinCharState
, 1);
1989 chr
->chr_write
= win_chr_write
;
1990 chr
->chr_close
= win_chr_close
;
1992 if (win_chr_init(chr
, filename
, errp
) < 0) {
2000 static int win_chr_pipe_poll(void *opaque
)
2002 CharDriverState
*chr
= opaque
;
2003 WinCharState
*s
= chr
->opaque
;
2006 PeekNamedPipe(s
->hcom
, NULL
, 0, NULL
, &size
, NULL
);
2009 win_chr_read_poll(chr
);
2016 static int win_chr_pipe_init(CharDriverState
*chr
, const char *filename
,
2019 WinCharState
*s
= chr
->opaque
;
2023 char openname
[CHR_MAX_FILENAME_SIZE
];
2027 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2029 error_setg(errp
, "Failed CreateEvent");
2032 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2034 error_setg(errp
, "Failed CreateEvent");
2038 snprintf(openname
, sizeof(openname
), "\\\\.\\pipe\\%s", filename
);
2039 s
->hcom
= CreateNamedPipe(openname
, PIPE_ACCESS_DUPLEX
| FILE_FLAG_OVERLAPPED
,
2040 PIPE_TYPE_BYTE
| PIPE_READMODE_BYTE
|
2042 MAXCONNECT
, NSENDBUF
, NRECVBUF
, NTIMEOUT
, NULL
);
2043 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
2044 error_setg(errp
, "Failed CreateNamedPipe (%lu)", GetLastError());
2049 ZeroMemory(&ov
, sizeof(ov
));
2050 ov
.hEvent
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2051 ret
= ConnectNamedPipe(s
->hcom
, &ov
);
2053 error_setg(errp
, "Failed ConnectNamedPipe");
2057 ret
= GetOverlappedResult(s
->hcom
, &ov
, &size
, TRUE
);
2059 error_setg(errp
, "Failed GetOverlappedResult");
2061 CloseHandle(ov
.hEvent
);
2068 CloseHandle(ov
.hEvent
);
2071 qemu_add_polling_cb(win_chr_pipe_poll
, chr
);
2080 static CharDriverState
*qemu_chr_open_pipe(const char *id
,
2081 ChardevBackend
*backend
,
2085 ChardevHostdev
*opts
= backend
->u
.pipe
;
2086 const char *filename
= opts
->device
;
2087 CharDriverState
*chr
;
2090 chr
= qemu_chr_alloc();
2091 s
= g_new0(WinCharState
, 1);
2093 chr
->chr_write
= win_chr_write
;
2094 chr
->chr_close
= win_chr_close
;
2096 if (win_chr_pipe_init(chr
, filename
, errp
) < 0) {
2104 static CharDriverState
*qemu_chr_open_win_file(HANDLE fd_out
)
2106 CharDriverState
*chr
;
2109 chr
= qemu_chr_alloc();
2110 s
= g_new0(WinCharState
, 1);
2113 chr
->chr_write
= win_chr_write
;
2117 static CharDriverState
*qemu_chr_open_win_con(const char *id
,
2118 ChardevBackend
*backend
,
2122 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE
));
2125 static int win_stdio_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2127 HANDLE hStdOut
= GetStdHandle(STD_OUTPUT_HANDLE
);
2134 if (!WriteFile(hStdOut
, buf
, len1
, &dwSize
, NULL
)) {
2144 static void win_stdio_wait_func(void *opaque
)
2146 CharDriverState
*chr
= opaque
;
2147 WinStdioCharState
*stdio
= chr
->opaque
;
2148 INPUT_RECORD buf
[4];
2153 ret
= ReadConsoleInput(stdio
->hStdIn
, buf
, ARRAY_SIZE(buf
), &dwSize
);
2156 /* Avoid error storm */
2157 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2161 for (i
= 0; i
< dwSize
; i
++) {
2162 KEY_EVENT_RECORD
*kev
= &buf
[i
].Event
.KeyEvent
;
2164 if (buf
[i
].EventType
== KEY_EVENT
&& kev
->bKeyDown
) {
2166 if (kev
->uChar
.AsciiChar
!= 0) {
2167 for (j
= 0; j
< kev
->wRepeatCount
; j
++) {
2168 if (qemu_chr_be_can_write(chr
)) {
2169 uint8_t c
= kev
->uChar
.AsciiChar
;
2170 qemu_chr_be_write(chr
, &c
, 1);
2178 static DWORD WINAPI
win_stdio_thread(LPVOID param
)
2180 CharDriverState
*chr
= param
;
2181 WinStdioCharState
*stdio
= chr
->opaque
;
2187 /* Wait for one byte */
2188 ret
= ReadFile(stdio
->hStdIn
, &stdio
->win_stdio_buf
, 1, &dwSize
, NULL
);
2190 /* Exit in case of error, continue if nothing read */
2198 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2199 if (stdio
->win_stdio_buf
== '\r') {
2203 /* Signal the main thread and wait until the byte was eaten */
2204 if (!SetEvent(stdio
->hInputReadyEvent
)) {
2207 if (WaitForSingleObject(stdio
->hInputDoneEvent
, INFINITE
)
2213 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2217 static void win_stdio_thread_wait_func(void *opaque
)
2219 CharDriverState
*chr
= opaque
;
2220 WinStdioCharState
*stdio
= chr
->opaque
;
2222 if (qemu_chr_be_can_write(chr
)) {
2223 qemu_chr_be_write(chr
, &stdio
->win_stdio_buf
, 1);
2226 SetEvent(stdio
->hInputDoneEvent
);
2229 static void qemu_chr_set_echo_win_stdio(CharDriverState
*chr
, bool echo
)
2231 WinStdioCharState
*stdio
= chr
->opaque
;
2234 GetConsoleMode(stdio
->hStdIn
, &dwMode
);
2237 SetConsoleMode(stdio
->hStdIn
, dwMode
| ENABLE_ECHO_INPUT
);
2239 SetConsoleMode(stdio
->hStdIn
, dwMode
& ~ENABLE_ECHO_INPUT
);
2243 static void win_stdio_close(CharDriverState
*chr
)
2245 WinStdioCharState
*stdio
= chr
->opaque
;
2247 if (stdio
->hInputReadyEvent
!= INVALID_HANDLE_VALUE
) {
2248 CloseHandle(stdio
->hInputReadyEvent
);
2250 if (stdio
->hInputDoneEvent
!= INVALID_HANDLE_VALUE
) {
2251 CloseHandle(stdio
->hInputDoneEvent
);
2253 if (stdio
->hInputThread
!= INVALID_HANDLE_VALUE
) {
2254 TerminateThread(stdio
->hInputThread
, 0);
2257 g_free(chr
->opaque
);
2261 static CharDriverState
*qemu_chr_open_stdio(const char *id
,
2262 ChardevBackend
*backend
,
2266 CharDriverState
*chr
;
2267 WinStdioCharState
*stdio
;
2271 chr
= qemu_chr_alloc();
2272 stdio
= g_new0(WinStdioCharState
, 1);
2274 stdio
->hStdIn
= GetStdHandle(STD_INPUT_HANDLE
);
2275 if (stdio
->hStdIn
== INVALID_HANDLE_VALUE
) {
2276 error_setg(errp
, "cannot open stdio: invalid handle");
2280 is_console
= GetConsoleMode(stdio
->hStdIn
, &dwMode
) != 0;
2282 chr
->opaque
= stdio
;
2283 chr
->chr_write
= win_stdio_write
;
2284 chr
->chr_close
= win_stdio_close
;
2287 if (qemu_add_wait_object(stdio
->hStdIn
,
2288 win_stdio_wait_func
, chr
)) {
2289 error_setg(errp
, "qemu_add_wait_object: failed");
2295 stdio
->hInputReadyEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2296 stdio
->hInputDoneEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2297 if (stdio
->hInputReadyEvent
== INVALID_HANDLE_VALUE
2298 || stdio
->hInputDoneEvent
== INVALID_HANDLE_VALUE
) {
2299 error_setg(errp
, "cannot create event");
2302 if (qemu_add_wait_object(stdio
->hInputReadyEvent
,
2303 win_stdio_thread_wait_func
, chr
)) {
2304 error_setg(errp
, "qemu_add_wait_object: failed");
2307 stdio
->hInputThread
= CreateThread(NULL
, 0, win_stdio_thread
,
2310 if (stdio
->hInputThread
== INVALID_HANDLE_VALUE
) {
2311 error_setg(errp
, "cannot create stdio thread");
2316 dwMode
|= ENABLE_LINE_INPUT
;
2319 /* set the terminal in raw mode */
2320 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2321 dwMode
|= ENABLE_PROCESSED_INPUT
;
2324 SetConsoleMode(stdio
->hStdIn
, dwMode
);
2326 chr
->chr_set_echo
= qemu_chr_set_echo_win_stdio
;
2327 qemu_chr_fe_set_echo(chr
, false);
2332 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2334 CloseHandle(stdio
->hInputReadyEvent
);
2335 CloseHandle(stdio
->hInputDoneEvent
);
2337 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2340 #endif /* !_WIN32 */
2343 /***********************************************************/
2344 /* UDP Net console */
2349 uint8_t buf
[READ_BUF_LEN
];
2355 /* Called with chr_write_lock held. */
2356 static int udp_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2358 NetCharDriver
*s
= chr
->opaque
;
2359 gsize bytes_written
;
2362 status
= g_io_channel_write_chars(s
->chan
, (const gchar
*)buf
, len
, &bytes_written
, NULL
);
2363 if (status
== G_IO_STATUS_EOF
) {
2365 } else if (status
!= G_IO_STATUS_NORMAL
) {
2369 return bytes_written
;
2372 static int udp_chr_read_poll(void *opaque
)
2374 CharDriverState
*chr
= opaque
;
2375 NetCharDriver
*s
= chr
->opaque
;
2377 s
->max_size
= qemu_chr_be_can_write(chr
);
2379 /* If there were any stray characters in the queue process them
2382 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2383 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2385 s
->max_size
= qemu_chr_be_can_write(chr
);
2390 static gboolean
udp_chr_read(GIOChannel
*chan
, GIOCondition cond
, void *opaque
)
2392 CharDriverState
*chr
= opaque
;
2393 NetCharDriver
*s
= chr
->opaque
;
2394 gsize bytes_read
= 0;
2397 if (s
->max_size
== 0) {
2400 status
= g_io_channel_read_chars(s
->chan
, (gchar
*)s
->buf
, sizeof(s
->buf
),
2402 s
->bufcnt
= bytes_read
;
2403 s
->bufptr
= s
->bufcnt
;
2404 if (status
!= G_IO_STATUS_NORMAL
) {
2405 remove_fd_in_watch(chr
);
2410 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2411 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2413 s
->max_size
= qemu_chr_be_can_write(chr
);
2419 static void udp_chr_update_read_handler(CharDriverState
*chr
)
2421 NetCharDriver
*s
= chr
->opaque
;
2423 remove_fd_in_watch(chr
);
2425 chr
->fd_in_tag
= io_add_watch_poll(s
->chan
, udp_chr_read_poll
,
2430 static void udp_chr_close(CharDriverState
*chr
)
2432 NetCharDriver
*s
= chr
->opaque
;
2434 remove_fd_in_watch(chr
);
2436 g_io_channel_unref(s
->chan
);
2440 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2443 static CharDriverState
*qemu_chr_open_udp_fd(int fd
)
2445 CharDriverState
*chr
= NULL
;
2446 NetCharDriver
*s
= NULL
;
2448 chr
= qemu_chr_alloc();
2449 s
= g_new0(NetCharDriver
, 1);
2452 s
->chan
= io_channel_from_socket(s
->fd
);
2456 chr
->chr_write
= udp_chr_write
;
2457 chr
->chr_update_read_handler
= udp_chr_update_read_handler
;
2458 chr
->chr_close
= udp_chr_close
;
2459 /* be isn't opened until we get a connection */
2460 chr
->explicit_be_open
= true;
2464 /***********************************************************/
2465 /* TCP Net console */
2469 GIOChannel
*chan
, *listen_chan
;
2478 int read_msgfds_num
;
2480 int write_msgfds_num
;
2482 SocketAddress
*addr
;
2486 guint reconnect_timer
;
2487 int64_t reconnect_time
;
2488 bool connect_err_reported
;
2491 static gboolean
socket_reconnect_timeout(gpointer opaque
);
2493 static void qemu_chr_socket_restart_timer(CharDriverState
*chr
)
2495 TCPCharDriver
*s
= chr
->opaque
;
2496 assert(s
->connected
== 0);
2497 s
->reconnect_timer
= g_timeout_add_seconds(s
->reconnect_time
,
2498 socket_reconnect_timeout
, chr
);
2501 static void check_report_connect_error(CharDriverState
*chr
,
2504 TCPCharDriver
*s
= chr
->opaque
;
2506 if (!s
->connect_err_reported
) {
2507 error_report("Unable to connect character device %s: %s",
2508 chr
->label
, error_get_pretty(err
));
2509 s
->connect_err_reported
= true;
2511 qemu_chr_socket_restart_timer(chr
);
2514 static gboolean
tcp_chr_accept(GIOChannel
*chan
, GIOCondition cond
, void *opaque
);
2517 static int unix_send_msgfds(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2519 TCPCharDriver
*s
= chr
->opaque
;
2524 size_t fd_size
= s
->write_msgfds_num
* sizeof(int);
2525 char control
[CMSG_SPACE(fd_size
)];
2526 struct cmsghdr
*cmsg
;
2528 memset(&msgh
, 0, sizeof(msgh
));
2529 memset(control
, 0, sizeof(control
));
2531 /* set the payload */
2532 iov
.iov_base
= (uint8_t *) buf
;
2535 msgh
.msg_iov
= &iov
;
2536 msgh
.msg_iovlen
= 1;
2538 msgh
.msg_control
= control
;
2539 msgh
.msg_controllen
= sizeof(control
);
2541 cmsg
= CMSG_FIRSTHDR(&msgh
);
2543 cmsg
->cmsg_len
= CMSG_LEN(fd_size
);
2544 cmsg
->cmsg_level
= SOL_SOCKET
;
2545 cmsg
->cmsg_type
= SCM_RIGHTS
;
2546 memcpy(CMSG_DATA(cmsg
), s
->write_msgfds
, fd_size
);
2549 r
= sendmsg(s
->fd
, &msgh
, 0);
2550 } while (r
< 0 && errno
== EINTR
);
2552 /* free the written msgfds, no matter what */
2553 if (s
->write_msgfds_num
) {
2554 g_free(s
->write_msgfds
);
2555 s
->write_msgfds
= 0;
2556 s
->write_msgfds_num
= 0;
2563 /* Called with chr_write_lock held. */
2564 static int tcp_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2566 TCPCharDriver
*s
= chr
->opaque
;
2569 if (s
->is_unix
&& s
->write_msgfds_num
) {
2570 return unix_send_msgfds(chr
, buf
, len
);
2574 return io_channel_send(s
->chan
, buf
, len
);
2577 /* XXX: indicate an error ? */
2582 static int tcp_chr_read_poll(void *opaque
)
2584 CharDriverState
*chr
= opaque
;
2585 TCPCharDriver
*s
= chr
->opaque
;
2588 s
->max_size
= qemu_chr_be_can_write(chr
);
2593 #define IAC_BREAK 243
2594 static void tcp_chr_process_IAC_bytes(CharDriverState
*chr
,
2596 uint8_t *buf
, int *size
)
2598 /* Handle any telnet client's basic IAC options to satisfy char by
2599 * char mode with no echo. All IAC options will be removed from
2600 * the buf and the do_telnetopt variable will be used to track the
2601 * state of the width of the IAC information.
2603 * IAC commands come in sets of 3 bytes with the exception of the
2604 * "IAC BREAK" command and the double IAC.
2610 for (i
= 0; i
< *size
; i
++) {
2611 if (s
->do_telnetopt
> 1) {
2612 if ((unsigned char)buf
[i
] == IAC
&& s
->do_telnetopt
== 2) {
2613 /* Double IAC means send an IAC */
2617 s
->do_telnetopt
= 1;
2619 if ((unsigned char)buf
[i
] == IAC_BREAK
&& s
->do_telnetopt
== 2) {
2620 /* Handle IAC break commands by sending a serial break */
2621 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
2626 if (s
->do_telnetopt
>= 4) {
2627 s
->do_telnetopt
= 1;
2630 if ((unsigned char)buf
[i
] == IAC
) {
2631 s
->do_telnetopt
= 2;
2642 static int tcp_get_msgfds(CharDriverState
*chr
, int *fds
, int num
)
2644 TCPCharDriver
*s
= chr
->opaque
;
2645 int to_copy
= (s
->read_msgfds_num
< num
) ? s
->read_msgfds_num
: num
;
2647 assert(num
<= TCP_MAX_FDS
);
2652 memcpy(fds
, s
->read_msgfds
, to_copy
* sizeof(int));
2654 /* Close unused fds */
2655 for (i
= to_copy
; i
< s
->read_msgfds_num
; i
++) {
2656 close(s
->read_msgfds
[i
]);
2659 g_free(s
->read_msgfds
);
2661 s
->read_msgfds_num
= 0;
2667 static int tcp_set_msgfds(CharDriverState
*chr
, int *fds
, int num
)
2669 TCPCharDriver
*s
= chr
->opaque
;
2671 /* clear old pending fd array */
2672 g_free(s
->write_msgfds
);
2675 s
->write_msgfds
= g_new(int, num
);
2676 memcpy(s
->write_msgfds
, fds
, num
* sizeof(int));
2679 s
->write_msgfds_num
= num
;
2685 static void unix_process_msgfd(CharDriverState
*chr
, struct msghdr
*msg
)
2687 TCPCharDriver
*s
= chr
->opaque
;
2688 struct cmsghdr
*cmsg
;
2690 for (cmsg
= CMSG_FIRSTHDR(msg
); cmsg
; cmsg
= CMSG_NXTHDR(msg
, cmsg
)) {
2693 if (cmsg
->cmsg_len
< CMSG_LEN(sizeof(int)) ||
2694 cmsg
->cmsg_level
!= SOL_SOCKET
||
2695 cmsg
->cmsg_type
!= SCM_RIGHTS
) {
2699 fd_size
= cmsg
->cmsg_len
- CMSG_LEN(0);
2705 /* close and clean read_msgfds */
2706 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
2707 close(s
->read_msgfds
[i
]);
2710 if (s
->read_msgfds_num
) {
2711 g_free(s
->read_msgfds
);
2714 s
->read_msgfds_num
= fd_size
/ sizeof(int);
2715 s
->read_msgfds
= g_malloc(fd_size
);
2716 memcpy(s
->read_msgfds
, CMSG_DATA(cmsg
), fd_size
);
2718 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
2719 int fd
= s
->read_msgfds
[i
];
2724 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2727 #ifndef MSG_CMSG_CLOEXEC
2728 qemu_set_cloexec(fd
);
2734 static ssize_t
tcp_chr_recv(CharDriverState
*chr
, char *buf
, size_t len
)
2736 TCPCharDriver
*s
= chr
->opaque
;
2737 struct msghdr msg
= { NULL
, };
2738 struct iovec iov
[1];
2740 struct cmsghdr cmsg
;
2741 char control
[CMSG_SPACE(sizeof(int) * TCP_MAX_FDS
)];
2746 iov
[0].iov_base
= buf
;
2747 iov
[0].iov_len
= len
;
2751 msg
.msg_control
= &msg_control
;
2752 msg
.msg_controllen
= sizeof(msg_control
);
2754 #ifdef MSG_CMSG_CLOEXEC
2755 flags
|= MSG_CMSG_CLOEXEC
;
2758 ret
= recvmsg(s
->fd
, &msg
, flags
);
2759 } while (ret
== -1 && errno
== EINTR
);
2761 if (ret
> 0 && s
->is_unix
) {
2762 unix_process_msgfd(chr
, &msg
);
2768 static ssize_t
tcp_chr_recv(CharDriverState
*chr
, char *buf
, size_t len
)
2770 TCPCharDriver
*s
= chr
->opaque
;
2774 ret
= qemu_recv(s
->fd
, buf
, len
, 0);
2775 } while (ret
== -1 && socket_error() == EINTR
);
2781 static GSource
*tcp_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
2783 TCPCharDriver
*s
= chr
->opaque
;
2784 return g_io_create_watch(s
->chan
, cond
);
2787 static void tcp_chr_disconnect(CharDriverState
*chr
)
2789 TCPCharDriver
*s
= chr
->opaque
;
2792 if (s
->listen_chan
) {
2793 s
->listen_tag
= g_io_add_watch(s
->listen_chan
, G_IO_IN
,
2794 tcp_chr_accept
, chr
);
2796 remove_fd_in_watch(chr
);
2797 g_io_channel_unref(s
->chan
);
2801 SocketAddress_to_str(chr
->filename
, CHR_MAX_FILENAME_SIZE
,
2802 "disconnected:", s
->addr
, s
->is_listen
, s
->is_telnet
);
2803 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2804 if (s
->reconnect_time
) {
2805 qemu_chr_socket_restart_timer(chr
);
2809 static gboolean
tcp_chr_read(GIOChannel
*chan
, GIOCondition cond
, void *opaque
)
2811 CharDriverState
*chr
= opaque
;
2812 TCPCharDriver
*s
= chr
->opaque
;
2813 uint8_t buf
[READ_BUF_LEN
];
2816 if (!s
->connected
|| s
->max_size
<= 0) {
2820 if (len
> s
->max_size
)
2822 size
= tcp_chr_recv(chr
, (void *)buf
, len
);
2825 socket_error() != EAGAIN
&& socket_error() != EWOULDBLOCK
)) {
2826 /* connection closed */
2827 tcp_chr_disconnect(chr
);
2828 } else if (size
> 0) {
2829 if (s
->do_telnetopt
)
2830 tcp_chr_process_IAC_bytes(chr
, s
, buf
, &size
);
2832 qemu_chr_be_write(chr
, buf
, size
);
2838 static int tcp_chr_sync_read(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2840 TCPCharDriver
*s
= chr
->opaque
;
2843 if (!s
->connected
) {
2847 size
= tcp_chr_recv(chr
, (void *) buf
, len
);
2849 /* connection closed */
2850 tcp_chr_disconnect(chr
);
2857 CharDriverState
*qemu_chr_open_eventfd(int eventfd
)
2859 CharDriverState
*chr
= qemu_chr_open_fd(eventfd
, eventfd
);
2862 chr
->avail_connections
= 1;
2869 static void tcp_chr_connect(void *opaque
)
2871 CharDriverState
*chr
= opaque
;
2872 TCPCharDriver
*s
= chr
->opaque
;
2873 struct sockaddr_storage ss
, ps
;
2874 socklen_t ss_len
= sizeof(ss
), ps_len
= sizeof(ps
);
2876 memset(&ss
, 0, ss_len
);
2877 if (getsockname(s
->fd
, (struct sockaddr
*) &ss
, &ss_len
) != 0) {
2878 snprintf(chr
->filename
, CHR_MAX_FILENAME_SIZE
,
2879 "Error in getsockname: %s\n", strerror(errno
));
2880 } else if (getpeername(s
->fd
, (struct sockaddr
*) &ps
, &ps_len
) != 0) {
2881 snprintf(chr
->filename
, CHR_MAX_FILENAME_SIZE
,
2882 "Error in getpeername: %s\n", strerror(errno
));
2884 sockaddr_to_str(chr
->filename
, CHR_MAX_FILENAME_SIZE
,
2885 &ss
, ss_len
, &ps
, ps_len
,
2886 s
->is_listen
, s
->is_telnet
);
2891 chr
->fd_in_tag
= io_add_watch_poll(s
->chan
, tcp_chr_read_poll
,
2894 qemu_chr_be_generic_open(chr
);
2897 static void tcp_chr_update_read_handler(CharDriverState
*chr
)
2899 TCPCharDriver
*s
= chr
->opaque
;
2901 remove_fd_in_watch(chr
);
2903 chr
->fd_in_tag
= io_add_watch_poll(s
->chan
, tcp_chr_read_poll
,
2908 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2909 static void tcp_chr_telnet_init(int fd
)
2912 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2913 IACSET(buf
, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2914 send(fd
, (char *)buf
, 3, 0);
2915 IACSET(buf
, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2916 send(fd
, (char *)buf
, 3, 0);
2917 IACSET(buf
, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2918 send(fd
, (char *)buf
, 3, 0);
2919 IACSET(buf
, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2920 send(fd
, (char *)buf
, 3, 0);
2923 static int tcp_chr_add_client(CharDriverState
*chr
, int fd
)
2925 TCPCharDriver
*s
= chr
->opaque
;
2929 qemu_set_nonblock(fd
);
2931 socket_set_nodelay(fd
);
2933 s
->chan
= io_channel_from_socket(fd
);
2934 if (s
->listen_tag
) {
2935 g_source_remove(s
->listen_tag
);
2938 tcp_chr_connect(chr
);
2943 static gboolean
tcp_chr_accept(GIOChannel
*channel
, GIOCondition cond
, void *opaque
)
2945 CharDriverState
*chr
= opaque
;
2946 TCPCharDriver
*s
= chr
->opaque
;
2947 struct sockaddr_in saddr
;
2949 struct sockaddr_un uaddr
;
2951 struct sockaddr
*addr
;
2958 len
= sizeof(uaddr
);
2959 addr
= (struct sockaddr
*)&uaddr
;
2963 len
= sizeof(saddr
);
2964 addr
= (struct sockaddr
*)&saddr
;
2966 fd
= qemu_accept(s
->listen_fd
, addr
, &len
);
2967 if (fd
< 0 && errno
!= EINTR
) {
2970 } else if (fd
>= 0) {
2971 if (s
->do_telnetopt
)
2972 tcp_chr_telnet_init(fd
);
2976 if (tcp_chr_add_client(chr
, fd
) < 0)
2982 static void tcp_chr_close(CharDriverState
*chr
)
2984 TCPCharDriver
*s
= chr
->opaque
;
2987 if (s
->reconnect_timer
) {
2988 g_source_remove(s
->reconnect_timer
);
2989 s
->reconnect_timer
= 0;
2991 qapi_free_SocketAddress(s
->addr
);
2993 remove_fd_in_watch(chr
);
2995 g_io_channel_unref(s
->chan
);
2999 if (s
->listen_fd
>= 0) {
3000 if (s
->listen_tag
) {
3001 g_source_remove(s
->listen_tag
);
3004 if (s
->listen_chan
) {
3005 g_io_channel_unref(s
->listen_chan
);
3007 closesocket(s
->listen_fd
);
3009 if (s
->read_msgfds_num
) {
3010 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3011 close(s
->read_msgfds
[i
]);
3013 g_free(s
->read_msgfds
);
3015 if (s
->write_msgfds_num
) {
3016 g_free(s
->write_msgfds
);
3019 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
3022 static void qemu_chr_finish_socket_connection(CharDriverState
*chr
, int fd
)
3024 TCPCharDriver
*s
= chr
->opaque
;
3028 s
->listen_chan
= io_channel_from_socket(s
->listen_fd
);
3029 s
->listen_tag
= g_io_add_watch(s
->listen_chan
, G_IO_IN
,
3030 tcp_chr_accept
, chr
);
3034 socket_set_nodelay(fd
);
3035 s
->chan
= io_channel_from_socket(s
->fd
);
3036 tcp_chr_connect(chr
);
3040 static void qemu_chr_socket_connected(int fd
, Error
*err
, void *opaque
)
3042 CharDriverState
*chr
= opaque
;
3043 TCPCharDriver
*s
= chr
->opaque
;
3046 check_report_connect_error(chr
, err
);
3050 s
->connect_err_reported
= false;
3051 qemu_chr_finish_socket_connection(chr
, fd
);
3054 static bool qemu_chr_open_socket_fd(CharDriverState
*chr
, Error
**errp
)
3056 TCPCharDriver
*s
= chr
->opaque
;
3060 fd
= socket_listen(s
->addr
, errp
);
3061 } else if (s
->reconnect_time
) {
3062 fd
= socket_connect(s
->addr
, errp
, qemu_chr_socket_connected
, chr
);
3065 fd
= socket_connect(s
->addr
, errp
, NULL
, NULL
);
3071 qemu_chr_finish_socket_connection(chr
, fd
);
3075 /*********************************************************/
3076 /* Ring buffer chardev */
3083 } RingBufCharDriver
;
3085 static size_t ringbuf_count(const CharDriverState
*chr
)
3087 const RingBufCharDriver
*d
= chr
->opaque
;
3089 return d
->prod
- d
->cons
;
3092 /* Called with chr_write_lock held. */
3093 static int ringbuf_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
3095 RingBufCharDriver
*d
= chr
->opaque
;
3098 if (!buf
|| (len
< 0)) {
3102 for (i
= 0; i
< len
; i
++ ) {
3103 d
->cbuf
[d
->prod
++ & (d
->size
- 1)] = buf
[i
];
3104 if (d
->prod
- d
->cons
> d
->size
) {
3105 d
->cons
= d
->prod
- d
->size
;
3112 static int ringbuf_chr_read(CharDriverState
*chr
, uint8_t *buf
, int len
)
3114 RingBufCharDriver
*d
= chr
->opaque
;
3117 qemu_mutex_lock(&chr
->chr_write_lock
);
3118 for (i
= 0; i
< len
&& d
->cons
!= d
->prod
; i
++) {
3119 buf
[i
] = d
->cbuf
[d
->cons
++ & (d
->size
- 1)];
3121 qemu_mutex_unlock(&chr
->chr_write_lock
);
3126 static void ringbuf_chr_close(struct CharDriverState
*chr
)
3128 RingBufCharDriver
*d
= chr
->opaque
;
3135 static CharDriverState
*qemu_chr_open_ringbuf(const char *id
,
3136 ChardevBackend
*backend
,
3140 ChardevRingbuf
*opts
= backend
->u
.ringbuf
;
3141 CharDriverState
*chr
;
3142 RingBufCharDriver
*d
;
3144 chr
= qemu_chr_alloc();
3145 d
= g_malloc(sizeof(*d
));
3147 d
->size
= opts
->has_size
? opts
->size
: 65536;
3149 /* The size must be power of 2 */
3150 if (d
->size
& (d
->size
- 1)) {
3151 error_setg(errp
, "size of ringbuf chardev must be power of two");
3157 d
->cbuf
= g_malloc0(d
->size
);
3160 chr
->chr_write
= ringbuf_chr_write
;
3161 chr
->chr_close
= ringbuf_chr_close
;
3171 bool chr_is_ringbuf(const CharDriverState
*chr
)
3173 return chr
->chr_write
== ringbuf_chr_write
;
3176 void qmp_ringbuf_write(const char *device
, const char *data
,
3177 bool has_format
, enum DataFormat format
,
3180 CharDriverState
*chr
;
3181 const uint8_t *write_data
;
3185 chr
= qemu_chr_find(device
);
3187 error_setg(errp
, "Device '%s' not found", device
);
3191 if (!chr_is_ringbuf(chr
)) {
3192 error_setg(errp
,"%s is not a ringbuf device", device
);
3196 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3197 write_data
= qbase64_decode(data
, -1,
3204 write_data
= (uint8_t *)data
;
3205 write_count
= strlen(data
);
3208 ret
= ringbuf_chr_write(chr
, write_data
, write_count
);
3210 if (write_data
!= (uint8_t *)data
) {
3211 g_free((void *)write_data
);
3215 error_setg(errp
, "Failed to write to device %s", device
);
3220 char *qmp_ringbuf_read(const char *device
, int64_t size
,
3221 bool has_format
, enum DataFormat format
,
3224 CharDriverState
*chr
;
3229 chr
= qemu_chr_find(device
);
3231 error_setg(errp
, "Device '%s' not found", device
);
3235 if (!chr_is_ringbuf(chr
)) {
3236 error_setg(errp
,"%s is not a ringbuf device", device
);
3241 error_setg(errp
, "size must be greater than zero");
3245 count
= ringbuf_count(chr
);
3246 size
= size
> count
? count
: size
;
3247 read_data
= g_malloc(size
+ 1);
3249 ringbuf_chr_read(chr
, read_data
, size
);
3251 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3252 data
= g_base64_encode(read_data
, size
);
3256 * FIXME should read only complete, valid UTF-8 characters up
3257 * to @size bytes. Invalid sequences should be replaced by a
3258 * suitable replacement character. Except when (and only
3259 * when) ring buffer lost characters since last read, initial
3260 * continuation characters should be dropped.
3262 read_data
[size
] = 0;
3263 data
= (char *)read_data
;
3269 QemuOpts
*qemu_chr_parse_compat(const char *label
, const char *filename
)
3271 char host
[65], port
[33], width
[8], height
[8];
3275 Error
*local_err
= NULL
;
3277 opts
= qemu_opts_create(qemu_find_opts("chardev"), label
, 1, &local_err
);
3279 error_report_err(local_err
);
3283 if (strstart(filename
, "mon:", &p
)) {
3285 qemu_opt_set(opts
, "mux", "on", &error_abort
);
3286 if (strcmp(filename
, "stdio") == 0) {
3287 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3288 * but pass it to the guest. Handle this only for compat syntax,
3289 * for -chardev syntax we have special option for this.
3290 * This is what -nographic did, redirecting+muxing serial+monitor
3291 * to stdio causing Ctrl+C to be passed to guest. */
3292 qemu_opt_set(opts
, "signal", "off", &error_abort
);
3296 if (strcmp(filename
, "null") == 0 ||
3297 strcmp(filename
, "pty") == 0 ||
3298 strcmp(filename
, "msmouse") == 0 ||
3299 strcmp(filename
, "braille") == 0 ||
3300 strcmp(filename
, "testdev") == 0 ||
3301 strcmp(filename
, "stdio") == 0) {
3302 qemu_opt_set(opts
, "backend", filename
, &error_abort
);
3305 if (strstart(filename
, "vc", &p
)) {
3306 qemu_opt_set(opts
, "backend", "vc", &error_abort
);
3308 if (sscanf(p
+1, "%7[0-9]x%7[0-9]", width
, height
) == 2) {
3310 qemu_opt_set(opts
, "width", width
, &error_abort
);
3311 qemu_opt_set(opts
, "height", height
, &error_abort
);
3312 } else if (sscanf(p
+1, "%7[0-9]Cx%7[0-9]C", width
, height
) == 2) {
3314 qemu_opt_set(opts
, "cols", width
, &error_abort
);
3315 qemu_opt_set(opts
, "rows", height
, &error_abort
);
3322 if (strcmp(filename
, "con:") == 0) {
3323 qemu_opt_set(opts
, "backend", "console", &error_abort
);
3326 if (strstart(filename
, "COM", NULL
)) {
3327 qemu_opt_set(opts
, "backend", "serial", &error_abort
);
3328 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3331 if (strstart(filename
, "file:", &p
)) {
3332 qemu_opt_set(opts
, "backend", "file", &error_abort
);
3333 qemu_opt_set(opts
, "path", p
, &error_abort
);
3336 if (strstart(filename
, "pipe:", &p
)) {
3337 qemu_opt_set(opts
, "backend", "pipe", &error_abort
);
3338 qemu_opt_set(opts
, "path", p
, &error_abort
);
3341 if (strstart(filename
, "tcp:", &p
) ||
3342 strstart(filename
, "telnet:", &p
)) {
3343 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3345 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1)
3348 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3349 qemu_opt_set(opts
, "host", host
, &error_abort
);
3350 qemu_opt_set(opts
, "port", port
, &error_abort
);
3351 if (p
[pos
] == ',') {
3352 qemu_opts_do_parse(opts
, p
+pos
+1, NULL
, &local_err
);
3354 error_report_err(local_err
);
3358 if (strstart(filename
, "telnet:", &p
))
3359 qemu_opt_set(opts
, "telnet", "on", &error_abort
);
3362 if (strstart(filename
, "udp:", &p
)) {
3363 qemu_opt_set(opts
, "backend", "udp", &error_abort
);
3364 if (sscanf(p
, "%64[^:]:%32[^@,]%n", host
, port
, &pos
) < 2) {
3366 if (sscanf(p
, ":%32[^@,]%n", port
, &pos
) < 1) {
3370 qemu_opt_set(opts
, "host", host
, &error_abort
);
3371 qemu_opt_set(opts
, "port", port
, &error_abort
);
3372 if (p
[pos
] == '@') {
3374 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3376 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1) {
3380 qemu_opt_set(opts
, "localaddr", host
, &error_abort
);
3381 qemu_opt_set(opts
, "localport", port
, &error_abort
);
3385 if (strstart(filename
, "unix:", &p
)) {
3386 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3387 qemu_opts_do_parse(opts
, p
, "path", &local_err
);
3389 error_report_err(local_err
);
3394 if (strstart(filename
, "/dev/parport", NULL
) ||
3395 strstart(filename
, "/dev/ppi", NULL
)) {
3396 qemu_opt_set(opts
, "backend", "parport", &error_abort
);
3397 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3400 if (strstart(filename
, "/dev/", NULL
)) {
3401 qemu_opt_set(opts
, "backend", "tty", &error_abort
);
3402 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3407 qemu_opts_del(opts
);
3411 static void qemu_chr_parse_file_out(QemuOpts
*opts
, ChardevBackend
*backend
,
3414 const char *path
= qemu_opt_get(opts
, "path");
3417 error_setg(errp
, "chardev: file: no filename given");
3420 backend
->u
.file
= g_new0(ChardevFile
, 1);
3421 backend
->u
.file
->out
= g_strdup(path
);
3423 backend
->u
.file
->has_append
= true;
3424 backend
->u
.file
->append
= qemu_opt_get_bool(opts
, "append", false);
3427 static void qemu_chr_parse_stdio(QemuOpts
*opts
, ChardevBackend
*backend
,
3430 backend
->u
.stdio
= g_new0(ChardevStdio
, 1);
3431 backend
->u
.stdio
->has_signal
= true;
3432 backend
->u
.stdio
->signal
= qemu_opt_get_bool(opts
, "signal", true);
3435 #ifdef HAVE_CHARDEV_SERIAL
3436 static void qemu_chr_parse_serial(QemuOpts
*opts
, ChardevBackend
*backend
,
3439 const char *device
= qemu_opt_get(opts
, "path");
3441 if (device
== NULL
) {
3442 error_setg(errp
, "chardev: serial/tty: no device path given");
3445 backend
->u
.serial
= g_new0(ChardevHostdev
, 1);
3446 backend
->u
.serial
->device
= g_strdup(device
);
3450 #ifdef HAVE_CHARDEV_PARPORT
3451 static void qemu_chr_parse_parallel(QemuOpts
*opts
, ChardevBackend
*backend
,
3454 const char *device
= qemu_opt_get(opts
, "path");
3456 if (device
== NULL
) {
3457 error_setg(errp
, "chardev: parallel: no device path given");
3460 backend
->u
.parallel
= g_new0(ChardevHostdev
, 1);
3461 backend
->u
.parallel
->device
= g_strdup(device
);
3465 static void qemu_chr_parse_pipe(QemuOpts
*opts
, ChardevBackend
*backend
,
3468 const char *device
= qemu_opt_get(opts
, "path");
3470 if (device
== NULL
) {
3471 error_setg(errp
, "chardev: pipe: no device path given");
3474 backend
->u
.pipe
= g_new0(ChardevHostdev
, 1);
3475 backend
->u
.pipe
->device
= g_strdup(device
);
3478 static void qemu_chr_parse_ringbuf(QemuOpts
*opts
, ChardevBackend
*backend
,
3483 backend
->u
.ringbuf
= g_new0(ChardevRingbuf
, 1);
3485 val
= qemu_opt_get_size(opts
, "size", 0);
3487 backend
->u
.ringbuf
->has_size
= true;
3488 backend
->u
.ringbuf
->size
= val
;
3492 static void qemu_chr_parse_mux(QemuOpts
*opts
, ChardevBackend
*backend
,
3495 const char *chardev
= qemu_opt_get(opts
, "chardev");
3497 if (chardev
== NULL
) {
3498 error_setg(errp
, "chardev: mux: no chardev given");
3501 backend
->u
.mux
= g_new0(ChardevMux
, 1);
3502 backend
->u
.mux
->chardev
= g_strdup(chardev
);
3505 static void qemu_chr_parse_socket(QemuOpts
*opts
, ChardevBackend
*backend
,
3508 bool is_listen
= qemu_opt_get_bool(opts
, "server", false);
3509 bool is_waitconnect
= is_listen
&& qemu_opt_get_bool(opts
, "wait", true);
3510 bool is_telnet
= qemu_opt_get_bool(opts
, "telnet", false);
3511 bool do_nodelay
= !qemu_opt_get_bool(opts
, "delay", true);
3512 int64_t reconnect
= qemu_opt_get_number(opts
, "reconnect", 0);
3513 const char *path
= qemu_opt_get(opts
, "path");
3514 const char *host
= qemu_opt_get(opts
, "host");
3515 const char *port
= qemu_opt_get(opts
, "port");
3516 SocketAddress
*addr
;
3520 error_setg(errp
, "chardev: socket: no host given");
3524 error_setg(errp
, "chardev: socket: no port given");
3529 backend
->u
.socket
= g_new0(ChardevSocket
, 1);
3531 backend
->u
.socket
->has_nodelay
= true;
3532 backend
->u
.socket
->nodelay
= do_nodelay
;
3533 backend
->u
.socket
->has_server
= true;
3534 backend
->u
.socket
->server
= is_listen
;
3535 backend
->u
.socket
->has_telnet
= true;
3536 backend
->u
.socket
->telnet
= is_telnet
;
3537 backend
->u
.socket
->has_wait
= true;
3538 backend
->u
.socket
->wait
= is_waitconnect
;
3539 backend
->u
.socket
->has_reconnect
= true;
3540 backend
->u
.socket
->reconnect
= reconnect
;
3542 addr
= g_new0(SocketAddress
, 1);
3544 addr
->type
= SOCKET_ADDRESS_KIND_UNIX
;
3545 addr
->u
.q_unix
= g_new0(UnixSocketAddress
, 1);
3546 addr
->u
.q_unix
->path
= g_strdup(path
);
3548 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
3549 addr
->u
.inet
= g_new0(InetSocketAddress
, 1);
3550 addr
->u
.inet
->host
= g_strdup(host
);
3551 addr
->u
.inet
->port
= g_strdup(port
);
3552 addr
->u
.inet
->has_to
= qemu_opt_get(opts
, "to");
3553 addr
->u
.inet
->to
= qemu_opt_get_number(opts
, "to", 0);
3554 addr
->u
.inet
->has_ipv4
= qemu_opt_get(opts
, "ipv4");
3555 addr
->u
.inet
->ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0);
3556 addr
->u
.inet
->has_ipv6
= qemu_opt_get(opts
, "ipv6");
3557 addr
->u
.inet
->ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0);
3559 backend
->u
.socket
->addr
= addr
;
3562 static void qemu_chr_parse_udp(QemuOpts
*opts
, ChardevBackend
*backend
,
3565 const char *host
= qemu_opt_get(opts
, "host");
3566 const char *port
= qemu_opt_get(opts
, "port");
3567 const char *localaddr
= qemu_opt_get(opts
, "localaddr");
3568 const char *localport
= qemu_opt_get(opts
, "localport");
3569 bool has_local
= false;
3570 SocketAddress
*addr
;
3572 if (host
== NULL
|| strlen(host
) == 0) {
3575 if (port
== NULL
|| strlen(port
) == 0) {
3576 error_setg(errp
, "chardev: udp: remote port not specified");
3579 if (localport
== NULL
|| strlen(localport
) == 0) {
3584 if (localaddr
== NULL
|| strlen(localaddr
) == 0) {
3590 backend
->u
.udp
= g_new0(ChardevUdp
, 1);
3592 addr
= g_new0(SocketAddress
, 1);
3593 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
3594 addr
->u
.inet
= g_new0(InetSocketAddress
, 1);
3595 addr
->u
.inet
->host
= g_strdup(host
);
3596 addr
->u
.inet
->port
= g_strdup(port
);
3597 addr
->u
.inet
->has_ipv4
= qemu_opt_get(opts
, "ipv4");
3598 addr
->u
.inet
->ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0);
3599 addr
->u
.inet
->has_ipv6
= qemu_opt_get(opts
, "ipv6");
3600 addr
->u
.inet
->ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0);
3601 backend
->u
.udp
->remote
= addr
;
3604 backend
->u
.udp
->has_local
= true;
3605 addr
= g_new0(SocketAddress
, 1);
3606 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
3607 addr
->u
.inet
= g_new0(InetSocketAddress
, 1);
3608 addr
->u
.inet
->host
= g_strdup(localaddr
);
3609 addr
->u
.inet
->port
= g_strdup(localport
);
3610 backend
->u
.udp
->local
= addr
;
3614 typedef struct CharDriver
{
3616 ChardevBackendKind kind
;
3617 void (*parse
)(QemuOpts
*opts
, ChardevBackend
*backend
, Error
**errp
);
3618 CharDriverState
*(*create
)(const char *id
, ChardevBackend
*backend
,
3619 ChardevReturn
*ret
, Error
**errp
);
3622 static GSList
*backends
;
3624 void register_char_driver(const char *name
, ChardevBackendKind kind
,
3625 void (*parse
)(QemuOpts
*opts
, ChardevBackend
*backend
, Error
**errp
),
3626 CharDriverState
*(*create
)(const char *id
, ChardevBackend
*backend
,
3627 ChardevReturn
*ret
, Error
**errp
))
3631 s
= g_malloc0(sizeof(*s
));
3632 s
->name
= g_strdup(name
);
3637 backends
= g_slist_append(backends
, s
);
3640 CharDriverState
*qemu_chr_new_from_opts(QemuOpts
*opts
,
3641 void (*init
)(struct CharDriverState
*s
),
3644 Error
*local_err
= NULL
;
3646 CharDriverState
*chr
;
3648 ChardevReturn
*ret
= NULL
;
3649 ChardevBackend
*backend
;
3650 const char *id
= qemu_opts_id(opts
);
3654 error_setg(errp
, "chardev: no id specified");
3658 if (qemu_opt_get(opts
, "backend") == NULL
) {
3659 error_setg(errp
, "chardev: \"%s\" missing backend",
3660 qemu_opts_id(opts
));
3663 for (i
= backends
; i
; i
= i
->next
) {
3666 if (strcmp(cd
->name
, qemu_opt_get(opts
, "backend")) == 0) {
3671 error_setg(errp
, "chardev: backend \"%s\" not found",
3672 qemu_opt_get(opts
, "backend"));
3676 backend
= g_new0(ChardevBackend
, 1);
3678 if (qemu_opt_get_bool(opts
, "mux", 0)) {
3679 bid
= g_strdup_printf("%s-base", id
);
3683 backend
->type
= cd
->kind
;
3685 cd
->parse(opts
, backend
, &local_err
);
3687 error_propagate(errp
, local_err
);
3691 ret
= qmp_chardev_add(bid
? bid
: id
, backend
, errp
);
3697 qapi_free_ChardevBackend(backend
);
3698 qapi_free_ChardevReturn(ret
);
3699 backend
= g_new0(ChardevBackend
, 1);
3700 backend
->u
.mux
= g_new0(ChardevMux
, 1);
3701 backend
->type
= CHARDEV_BACKEND_KIND_MUX
;
3702 backend
->u
.mux
->chardev
= g_strdup(bid
);
3703 ret
= qmp_chardev_add(id
, backend
, errp
);
3705 chr
= qemu_chr_find(bid
);
3706 qemu_chr_delete(chr
);
3712 chr
= qemu_chr_find(id
);
3716 qapi_free_ChardevBackend(backend
);
3717 qapi_free_ChardevReturn(ret
);
3722 qemu_opts_del(opts
);
3726 CharDriverState
*qemu_chr_new(const char *label
, const char *filename
, void (*init
)(struct CharDriverState
*s
))
3729 CharDriverState
*chr
;
3733 if (strstart(filename
, "chardev:", &p
)) {
3734 return qemu_chr_find(p
);
3737 opts
= qemu_chr_parse_compat(label
, filename
);
3741 chr
= qemu_chr_new_from_opts(opts
, init
, &err
);
3743 error_report_err(err
);
3745 if (chr
&& qemu_opt_get_bool(opts
, "mux", 0)) {
3746 qemu_chr_fe_claim_no_fail(chr
);
3747 monitor_init(chr
, MONITOR_USE_READLINE
);
3752 void qemu_chr_fe_set_echo(struct CharDriverState
*chr
, bool echo
)
3754 if (chr
->chr_set_echo
) {
3755 chr
->chr_set_echo(chr
, echo
);
3759 void qemu_chr_fe_set_open(struct CharDriverState
*chr
, int fe_open
)
3761 if (chr
->fe_open
== fe_open
) {
3764 chr
->fe_open
= fe_open
;
3765 if (chr
->chr_set_fe_open
) {
3766 chr
->chr_set_fe_open(chr
, fe_open
);
3770 void qemu_chr_fe_event(struct CharDriverState
*chr
, int event
)
3772 if (chr
->chr_fe_event
) {
3773 chr
->chr_fe_event(chr
, event
);
3777 int qemu_chr_fe_add_watch(CharDriverState
*s
, GIOCondition cond
,
3778 GIOFunc func
, void *user_data
)
3783 if (s
->chr_add_watch
== NULL
) {
3787 src
= s
->chr_add_watch(s
, cond
);
3792 g_source_set_callback(src
, (GSourceFunc
)func
, user_data
, NULL
);
3793 tag
= g_source_attach(src
, NULL
);
3794 g_source_unref(src
);
3799 int qemu_chr_fe_claim(CharDriverState
*s
)
3801 if (s
->avail_connections
< 1) {
3804 s
->avail_connections
--;
3808 void qemu_chr_fe_claim_no_fail(CharDriverState
*s
)
3810 if (qemu_chr_fe_claim(s
) != 0) {
3811 fprintf(stderr
, "%s: error chardev \"%s\" already used\n",
3812 __func__
, s
->label
);
3817 void qemu_chr_fe_release(CharDriverState
*s
)
3819 s
->avail_connections
++;
3822 void qemu_chr_free(CharDriverState
*chr
)
3824 if (chr
->chr_close
) {
3825 chr
->chr_close(chr
);
3827 g_free(chr
->filename
);
3829 qemu_opts_del(chr
->opts
);
3833 void qemu_chr_delete(CharDriverState
*chr
)
3835 QTAILQ_REMOVE(&chardevs
, chr
, next
);
3839 ChardevInfoList
*qmp_query_chardev(Error
**errp
)
3841 ChardevInfoList
*chr_list
= NULL
;
3842 CharDriverState
*chr
;
3844 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
3845 ChardevInfoList
*info
= g_malloc0(sizeof(*info
));
3846 info
->value
= g_malloc0(sizeof(*info
->value
));
3847 info
->value
->label
= g_strdup(chr
->label
);
3848 info
->value
->filename
= g_strdup(chr
->filename
);
3849 info
->value
->frontend_open
= chr
->fe_open
;
3851 info
->next
= chr_list
;
3858 ChardevBackendInfoList
*qmp_query_chardev_backends(Error
**errp
)
3860 ChardevBackendInfoList
*backend_list
= NULL
;
3861 CharDriver
*c
= NULL
;
3864 for (i
= backends
; i
; i
= i
->next
) {
3865 ChardevBackendInfoList
*info
= g_malloc0(sizeof(*info
));
3867 info
->value
= g_malloc0(sizeof(*info
->value
));
3868 info
->value
->name
= g_strdup(c
->name
);
3870 info
->next
= backend_list
;
3871 backend_list
= info
;
3874 return backend_list
;
3877 CharDriverState
*qemu_chr_find(const char *name
)
3879 CharDriverState
*chr
;
3881 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
3882 if (strcmp(chr
->label
, name
) != 0)
3889 /* Get a character (serial) device interface. */
3890 CharDriverState
*qemu_char_get_next_serial(void)
3892 static int next_serial
;
3893 CharDriverState
*chr
;
3895 /* FIXME: This function needs to go away: use chardev properties! */
3897 while (next_serial
< MAX_SERIAL_PORTS
&& serial_hds
[next_serial
]) {
3898 chr
= serial_hds
[next_serial
++];
3899 qemu_chr_fe_claim_no_fail(chr
);
3905 QemuOptsList qemu_chardev_opts
= {
3907 .implied_opt_name
= "backend",
3908 .head
= QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts
.head
),
3912 .type
= QEMU_OPT_STRING
,
3915 .type
= QEMU_OPT_STRING
,
3918 .type
= QEMU_OPT_STRING
,
3921 .type
= QEMU_OPT_STRING
,
3923 .name
= "localaddr",
3924 .type
= QEMU_OPT_STRING
,
3926 .name
= "localport",
3927 .type
= QEMU_OPT_STRING
,
3930 .type
= QEMU_OPT_NUMBER
,
3933 .type
= QEMU_OPT_BOOL
,
3936 .type
= QEMU_OPT_BOOL
,
3939 .type
= QEMU_OPT_BOOL
,
3942 .type
= QEMU_OPT_BOOL
,
3945 .type
= QEMU_OPT_BOOL
,
3947 .name
= "reconnect",
3948 .type
= QEMU_OPT_NUMBER
,
3951 .type
= QEMU_OPT_BOOL
,
3954 .type
= QEMU_OPT_NUMBER
,
3957 .type
= QEMU_OPT_NUMBER
,
3960 .type
= QEMU_OPT_NUMBER
,
3963 .type
= QEMU_OPT_NUMBER
,
3966 .type
= QEMU_OPT_BOOL
,
3969 .type
= QEMU_OPT_BOOL
,
3972 .type
= QEMU_OPT_STRING
,
3975 .type
= QEMU_OPT_NUMBER
,
3978 .type
= QEMU_OPT_SIZE
,
3981 .type
= QEMU_OPT_STRING
,
3984 .type
= QEMU_OPT_BOOL
,
3986 { /* end of list */ }
3992 static CharDriverState
*qmp_chardev_open_file(const char *id
,
3993 ChardevBackend
*backend
,
3997 ChardevFile
*file
= backend
->u
.file
;
4001 error_setg(errp
, "input file not supported");
4005 out
= CreateFile(file
->out
, GENERIC_WRITE
, FILE_SHARE_READ
, NULL
,
4006 OPEN_ALWAYS
, FILE_ATTRIBUTE_NORMAL
, NULL
);
4007 if (out
== INVALID_HANDLE_VALUE
) {
4008 error_setg(errp
, "open %s failed", file
->out
);
4011 return qemu_chr_open_win_file(out
);
4014 static CharDriverState
*qmp_chardev_open_serial(const char *id
,
4015 ChardevBackend
*backend
,
4019 ChardevHostdev
*serial
= backend
->u
.serial
;
4020 return qemu_chr_open_win_path(serial
->device
, errp
);
4025 static int qmp_chardev_open_file_source(char *src
, int flags
,
4030 TFR(fd
= qemu_open(src
, flags
, 0666));
4032 error_setg_file_open(errp
, errno
, src
);
4037 static CharDriverState
*qmp_chardev_open_file(const char *id
,
4038 ChardevBackend
*backend
,
4042 ChardevFile
*file
= backend
->u
.file
;
4043 int flags
, in
= -1, out
;
4045 flags
= O_WRONLY
| O_CREAT
| O_BINARY
;
4046 if (file
->has_append
&& file
->append
) {
4052 out
= qmp_chardev_open_file_source(file
->out
, flags
, errp
);
4059 in
= qmp_chardev_open_file_source(file
->in
, flags
, errp
);
4066 return qemu_chr_open_fd(in
, out
);
4069 #ifdef HAVE_CHARDEV_SERIAL
4070 static CharDriverState
*qmp_chardev_open_serial(const char *id
,
4071 ChardevBackend
*backend
,
4075 ChardevHostdev
*serial
= backend
->u
.serial
;
4078 fd
= qmp_chardev_open_file_source(serial
->device
, O_RDWR
, errp
);
4082 qemu_set_nonblock(fd
);
4083 return qemu_chr_open_tty_fd(fd
);
4087 #ifdef HAVE_CHARDEV_PARPORT
4088 static CharDriverState
*qmp_chardev_open_parallel(const char *id
,
4089 ChardevBackend
*backend
,
4093 ChardevHostdev
*parallel
= backend
->u
.parallel
;
4096 fd
= qmp_chardev_open_file_source(parallel
->device
, O_RDWR
, errp
);
4100 return qemu_chr_open_pp_fd(fd
, errp
);
4106 static void socket_try_connect(CharDriverState
*chr
)
4110 if (!qemu_chr_open_socket_fd(chr
, &err
)) {
4111 check_report_connect_error(chr
, err
);
4115 static gboolean
socket_reconnect_timeout(gpointer opaque
)
4117 CharDriverState
*chr
= opaque
;
4118 TCPCharDriver
*s
= chr
->opaque
;
4120 s
->reconnect_timer
= 0;
4126 socket_try_connect(chr
);
4131 static CharDriverState
*qmp_chardev_open_socket(const char *id
,
4132 ChardevBackend
*backend
,
4136 CharDriverState
*chr
;
4138 ChardevSocket
*sock
= backend
->u
.socket
;
4139 SocketAddress
*addr
= sock
->addr
;
4140 bool do_nodelay
= sock
->has_nodelay
? sock
->nodelay
: false;
4141 bool is_listen
= sock
->has_server
? sock
->server
: true;
4142 bool is_telnet
= sock
->has_telnet
? sock
->telnet
: false;
4143 bool is_waitconnect
= sock
->has_wait
? sock
->wait
: false;
4144 int64_t reconnect
= sock
->has_reconnect
? sock
->reconnect
: 0;
4146 chr
= qemu_chr_alloc();
4147 s
= g_new0(TCPCharDriver
, 1);
4151 s
->is_unix
= addr
->type
== SOCKET_ADDRESS_KIND_UNIX
;
4152 s
->is_listen
= is_listen
;
4153 s
->is_telnet
= is_telnet
;
4154 s
->do_nodelay
= do_nodelay
;
4155 qapi_copy_SocketAddress(&s
->addr
, sock
->addr
);
4158 chr
->chr_write
= tcp_chr_write
;
4159 chr
->chr_sync_read
= tcp_chr_sync_read
;
4160 chr
->chr_close
= tcp_chr_close
;
4161 chr
->get_msgfds
= tcp_get_msgfds
;
4162 chr
->set_msgfds
= tcp_set_msgfds
;
4163 chr
->chr_add_client
= tcp_chr_add_client
;
4164 chr
->chr_add_watch
= tcp_chr_add_watch
;
4165 chr
->chr_update_read_handler
= tcp_chr_update_read_handler
;
4166 /* be isn't opened until we get a connection */
4167 chr
->explicit_be_open
= true;
4169 chr
->filename
= g_malloc(CHR_MAX_FILENAME_SIZE
);
4170 SocketAddress_to_str(chr
->filename
, CHR_MAX_FILENAME_SIZE
, "disconnected:",
4171 addr
, is_listen
, is_telnet
);
4175 s
->do_telnetopt
= 1;
4177 } else if (reconnect
> 0) {
4178 s
->reconnect_time
= reconnect
;
4181 if (s
->reconnect_time
) {
4182 socket_try_connect(chr
);
4183 } else if (!qemu_chr_open_socket_fd(chr
, errp
)) {
4185 g_free(chr
->filename
);
4190 if (is_listen
&& is_waitconnect
) {
4191 fprintf(stderr
, "QEMU waiting for connection on: %s\n",
4193 tcp_chr_accept(s
->listen_chan
, G_IO_IN
, chr
);
4194 qemu_set_nonblock(s
->listen_fd
);
4200 static CharDriverState
*qmp_chardev_open_udp(const char *id
,
4201 ChardevBackend
*backend
,
4205 ChardevUdp
*udp
= backend
->u
.udp
;
4208 fd
= socket_dgram(udp
->remote
, udp
->local
, errp
);
4212 return qemu_chr_open_udp_fd(fd
);
4215 ChardevReturn
*qmp_chardev_add(const char *id
, ChardevBackend
*backend
,
4218 ChardevReturn
*ret
= g_new0(ChardevReturn
, 1);
4219 CharDriverState
*chr
= NULL
;
4220 Error
*local_err
= NULL
;
4224 chr
= qemu_chr_find(id
);
4226 error_setg(errp
, "Chardev '%s' already exists", id
);
4231 for (i
= backends
; i
; i
= i
->next
) {
4234 if (cd
->kind
== backend
->type
) {
4235 chr
= cd
->create(id
, backend
, ret
, &local_err
);
4237 error_propagate(errp
, local_err
);
4246 error_setg(errp
, "chardev backend not available");
4250 chr
->label
= g_strdup(id
);
4251 chr
->avail_connections
=
4252 (backend
->type
== CHARDEV_BACKEND_KIND_MUX
) ? MAX_MUX
: 1;
4253 if (!chr
->filename
) {
4254 chr
->filename
= g_strdup(ChardevBackendKind_lookup
[backend
->type
]);
4256 if (!chr
->explicit_be_open
) {
4257 qemu_chr_be_event(chr
, CHR_EVENT_OPENED
);
4259 QTAILQ_INSERT_TAIL(&chardevs
, chr
, next
);
4267 void qmp_chardev_remove(const char *id
, Error
**errp
)
4269 CharDriverState
*chr
;
4271 chr
= qemu_chr_find(id
);
4273 error_setg(errp
, "Chardev '%s' not found", id
);
4276 if (chr
->chr_can_read
|| chr
->chr_read
||
4277 chr
->chr_event
|| chr
->handler_opaque
) {
4278 error_setg(errp
, "Chardev '%s' is busy", id
);
4281 qemu_chr_delete(chr
);
4284 static void register_types(void)
4286 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL
, NULL
,
4287 qemu_chr_open_null
);
4288 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET
,
4289 qemu_chr_parse_socket
, qmp_chardev_open_socket
);
4290 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP
, qemu_chr_parse_udp
,
4291 qmp_chardev_open_udp
);
4292 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF
,
4293 qemu_chr_parse_ringbuf
, qemu_chr_open_ringbuf
);
4294 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE
,
4295 qemu_chr_parse_file_out
, qmp_chardev_open_file
);
4296 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO
,
4297 qemu_chr_parse_stdio
, qemu_chr_open_stdio
);
4298 #if defined HAVE_CHARDEV_SERIAL
4299 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL
,
4300 qemu_chr_parse_serial
, qmp_chardev_open_serial
);
4301 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL
,
4302 qemu_chr_parse_serial
, qmp_chardev_open_serial
);
4304 #ifdef HAVE_CHARDEV_PARPORT
4305 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL
,
4306 qemu_chr_parse_parallel
, qmp_chardev_open_parallel
);
4307 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL
,
4308 qemu_chr_parse_parallel
, qmp_chardev_open_parallel
);
4310 #ifdef HAVE_CHARDEV_PTY
4311 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY
, NULL
,
4315 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE
, NULL
,
4316 qemu_chr_open_win_con
);
4318 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE
,
4319 qemu_chr_parse_pipe
, qemu_chr_open_pipe
);
4320 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX
, qemu_chr_parse_mux
,
4322 /* Bug-compatibility: */
4323 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY
,
4324 qemu_chr_parse_ringbuf
, qemu_chr_open_ringbuf
);
4325 /* this must be done after machine init, since we register FEs with muxes
4326 * as part of realize functions like serial_isa_realizefn when -nographic
4329 qemu_add_machine_init_done_notifier(&muxes_realize_notify
);
4332 type_init(register_types
);