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/osdep.h"
25 #include "qemu-common.h"
26 #include "qemu/cutils.h"
27 #include "monitor/monitor.h"
28 #include "sysemu/sysemu.h"
29 #include "sysemu/block-backend.h"
30 #include "qemu/error-report.h"
31 #include "qemu/timer.h"
32 #include "sysemu/char.h"
34 #include "qmp-commands.h"
35 #include "qapi/clone-visitor.h"
36 #include "qapi-visit.h"
37 #include "qemu/base64.h"
38 #include "io/channel-socket.h"
39 #include "io/channel-file.h"
40 #include "io/channel-tls.h"
41 #include "sysemu/replay.h"
42 #include "qemu/help_option.h"
47 #include <sys/times.h>
50 #include <sys/ioctl.h>
51 #include <sys/resource.h>
52 #include <sys/socket.h>
53 #include <netinet/in.h>
55 #include <arpa/inet.h>
57 #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>
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 TCP_MAX_FDS 16
92 typedef struct MuxChardev MuxChardev
;
94 /***********************************************************/
95 /* Socket address helpers */
97 static char *SocketAddress_to_str(const char *prefix
, SocketAddress
*addr
,
98 bool is_listen
, bool is_telnet
)
100 switch (addr
->type
) {
101 case SOCKET_ADDRESS_KIND_INET
:
102 return g_strdup_printf("%s%s:%s:%s%s", prefix
,
103 is_telnet
? "telnet" : "tcp",
104 addr
->u
.inet
.data
->host
,
105 addr
->u
.inet
.data
->port
,
106 is_listen
? ",server" : "");
108 case SOCKET_ADDRESS_KIND_UNIX
:
109 return g_strdup_printf("%sunix:%s%s", prefix
,
110 addr
->u
.q_unix
.data
->path
,
111 is_listen
? ",server" : "");
113 case SOCKET_ADDRESS_KIND_FD
:
114 return g_strdup_printf("%sfd:%s%s", prefix
, addr
->u
.fd
.data
->str
,
115 is_listen
? ",server" : "");
122 static char *sockaddr_to_str(struct sockaddr_storage
*ss
, socklen_t ss_len
,
123 struct sockaddr_storage
*ps
, socklen_t ps_len
,
124 bool is_listen
, bool is_telnet
)
126 char shost
[NI_MAXHOST
], sserv
[NI_MAXSERV
];
127 char phost
[NI_MAXHOST
], pserv
[NI_MAXSERV
];
128 const char *left
= "", *right
= "";
130 switch (ss
->ss_family
) {
133 return g_strdup_printf("unix:%s%s",
134 ((struct sockaddr_un
*)(ss
))->sun_path
,
135 is_listen
? ",server" : "");
142 getnameinfo((struct sockaddr
*) ss
, ss_len
, shost
, sizeof(shost
),
143 sserv
, sizeof(sserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
144 getnameinfo((struct sockaddr
*) ps
, ps_len
, phost
, sizeof(phost
),
145 pserv
, sizeof(pserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
146 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
147 is_telnet
? "telnet" : "tcp",
148 left
, shost
, right
, sserv
,
149 is_listen
? ",server" : "",
150 left
, phost
, right
, pserv
);
153 return g_strdup_printf("unknown");
157 /***********************************************************/
158 /* character device */
160 static QTAILQ_HEAD(ChardevHead
, Chardev
) chardevs
=
161 QTAILQ_HEAD_INITIALIZER(chardevs
);
163 void qemu_chr_be_event(Chardev
*s
, int event
)
165 CharBackend
*be
= s
->be
;
167 /* Keep track if the char device is open */
169 case CHR_EVENT_OPENED
:
172 case CHR_EVENT_CLOSED
:
177 if (!be
|| !be
->chr_event
) {
181 be
->chr_event(be
->opaque
, event
);
184 void qemu_chr_be_generic_open(Chardev
*s
)
186 qemu_chr_be_event(s
, CHR_EVENT_OPENED
);
190 /* Not reporting errors from writing to logfile, as logs are
191 * defined to be "best effort" only */
192 static void qemu_chr_fe_write_log(Chardev
*s
,
193 const uint8_t *buf
, size_t len
)
204 ret
= write(s
->logfd
, buf
+ done
, len
- done
);
205 if (ret
== -1 && errno
== EAGAIN
) {
217 static int qemu_chr_fe_write_buffer(Chardev
*s
,
218 const uint8_t *buf
, int len
, int *offset
)
220 ChardevClass
*cc
= CHARDEV_GET_CLASS(s
);
224 qemu_mutex_lock(&s
->chr_write_lock
);
225 while (*offset
< len
) {
227 res
= cc
->chr_write(s
, buf
+ *offset
, len
- *offset
);
228 if (res
< 0 && errno
== EAGAIN
) {
240 qemu_chr_fe_write_log(s
, buf
, *offset
);
242 qemu_mutex_unlock(&s
->chr_write_lock
);
247 static bool qemu_chr_replay(Chardev
*chr
)
249 return qemu_chr_has_feature(chr
, QEMU_CHAR_FEATURE_REPLAY
);
252 int qemu_chr_fe_write(CharBackend
*be
, const uint8_t *buf
, int len
)
254 Chardev
*s
= be
->chr
;
262 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_PLAY
) {
264 replay_char_write_event_load(&ret
, &offset
);
265 assert(offset
<= len
);
266 qemu_chr_fe_write_buffer(s
, buf
, offset
, &offset
);
270 cc
= CHARDEV_GET_CLASS(s
);
271 qemu_mutex_lock(&s
->chr_write_lock
);
272 ret
= cc
->chr_write(s
, buf
, len
);
275 qemu_chr_fe_write_log(s
, buf
, ret
);
278 qemu_mutex_unlock(&s
->chr_write_lock
);
280 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_RECORD
) {
281 replay_char_write_event_save(ret
, ret
< 0 ? 0 : ret
);
287 static int qemu_chr_write_all(Chardev
*s
, const uint8_t *buf
, int len
)
292 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_PLAY
) {
293 replay_char_write_event_load(&res
, &offset
);
294 assert(offset
<= len
);
295 qemu_chr_fe_write_buffer(s
, buf
, offset
, &offset
);
299 res
= qemu_chr_fe_write_buffer(s
, buf
, len
, &offset
);
301 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_RECORD
) {
302 replay_char_write_event_save(res
, offset
);
311 int qemu_chr_fe_write_all(CharBackend
*be
, const uint8_t *buf
, int len
)
313 Chardev
*s
= be
->chr
;
319 return qemu_chr_write_all(s
, buf
, len
);
322 int qemu_chr_fe_read_all(CharBackend
*be
, uint8_t *buf
, int len
)
324 Chardev
*s
= be
->chr
;
325 int offset
= 0, counter
= 10;
328 if (!s
|| !CHARDEV_GET_CLASS(s
)->chr_sync_read
) {
332 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_PLAY
) {
333 return replay_char_read_all_load(buf
);
336 while (offset
< len
) {
338 res
= CHARDEV_GET_CLASS(s
)->chr_sync_read(s
, buf
+ offset
,
340 if (res
== -1 && errno
== EAGAIN
) {
350 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_RECORD
) {
351 replay_char_read_all_save_error(res
);
363 if (qemu_chr_replay(s
) && replay_mode
== REPLAY_MODE_RECORD
) {
364 replay_char_read_all_save_buf(buf
, offset
);
369 int qemu_chr_fe_ioctl(CharBackend
*be
, int cmd
, void *arg
)
371 Chardev
*s
= be
->chr
;
374 if (!s
|| !CHARDEV_GET_CLASS(s
)->chr_ioctl
|| qemu_chr_replay(s
)) {
377 res
= CHARDEV_GET_CLASS(s
)->chr_ioctl(s
, cmd
, arg
);
383 int qemu_chr_be_can_write(Chardev
*s
)
385 CharBackend
*be
= s
->be
;
387 if (!be
|| !be
->chr_can_read
) {
391 return be
->chr_can_read(be
->opaque
);
394 void qemu_chr_be_write_impl(Chardev
*s
, uint8_t *buf
, int len
)
396 CharBackend
*be
= s
->be
;
398 if (be
&& be
->chr_read
) {
399 be
->chr_read(be
->opaque
, buf
, len
);
403 void qemu_chr_be_write(Chardev
*s
, uint8_t *buf
, int len
)
405 if (qemu_chr_replay(s
)) {
406 if (replay_mode
== REPLAY_MODE_PLAY
) {
409 replay_chr_be_write(s
, buf
, len
);
411 qemu_chr_be_write_impl(s
, buf
, len
);
415 int qemu_chr_fe_get_msgfd(CharBackend
*be
)
417 Chardev
*s
= be
->chr
;
419 int res
= (qemu_chr_fe_get_msgfds(be
, &fd
, 1) == 1) ? fd
: -1;
420 if (s
&& qemu_chr_replay(s
)) {
421 error_report("Replay: get msgfd is not supported "
422 "for serial devices yet");
428 int qemu_chr_fe_get_msgfds(CharBackend
*be
, int *fds
, int len
)
430 Chardev
*s
= be
->chr
;
436 return CHARDEV_GET_CLASS(s
)->get_msgfds
?
437 CHARDEV_GET_CLASS(s
)->get_msgfds(s
, fds
, len
) : -1;
440 int qemu_chr_fe_set_msgfds(CharBackend
*be
, int *fds
, int num
)
442 Chardev
*s
= be
->chr
;
448 return CHARDEV_GET_CLASS(s
)->set_msgfds
?
449 CHARDEV_GET_CLASS(s
)->set_msgfds(s
, fds
, num
) : -1;
452 int qemu_chr_add_client(Chardev
*s
, int fd
)
454 return CHARDEV_GET_CLASS(s
)->chr_add_client
?
455 CHARDEV_GET_CLASS(s
)->chr_add_client(s
, fd
) : -1;
458 void qemu_chr_fe_accept_input(CharBackend
*be
)
460 Chardev
*s
= be
->chr
;
466 if (CHARDEV_GET_CLASS(s
)->chr_accept_input
) {
467 CHARDEV_GET_CLASS(s
)->chr_accept_input(s
);
472 void qemu_chr_fe_printf(CharBackend
*be
, const char *fmt
, ...)
474 char buf
[READ_BUF_LEN
];
477 vsnprintf(buf
, sizeof(buf
), fmt
, ap
);
478 /* XXX this blocks entire thread. Rewrite to use
479 * qemu_chr_fe_write and background I/O callbacks */
480 qemu_chr_fe_write_all(be
, (uint8_t *)buf
, strlen(buf
));
484 static void remove_fd_in_watch(Chardev
*chr
);
485 static void mux_chr_set_handlers(Chardev
*chr
, GMainContext
*context
);
486 static void mux_set_focus(Chardev
*chr
, int focus
);
488 static void qemu_char_open(Chardev
*chr
, ChardevBackend
*backend
,
489 bool *be_opened
, Error
**errp
)
491 ChardevClass
*cc
= CHARDEV_GET_CLASS(chr
);
492 /* Any ChardevCommon member would work */
493 ChardevCommon
*common
= backend
? backend
->u
.null
.data
: NULL
;
495 if (common
&& common
->has_logfile
) {
496 int flags
= O_WRONLY
| O_CREAT
;
497 if (common
->has_logappend
&&
503 chr
->logfd
= qemu_open(common
->logfile
, flags
, 0666);
504 if (chr
->logfd
< 0) {
505 error_setg_errno(errp
, errno
,
506 "Unable to open logfile %s",
513 cc
->open(chr
, backend
, be_opened
, errp
);
517 static void char_init(Object
*obj
)
519 Chardev
*chr
= CHARDEV(obj
);
522 qemu_mutex_init(&chr
->chr_write_lock
);
525 static void char_finalize(Object
*obj
)
527 Chardev
*chr
= CHARDEV(obj
);
532 g_free(chr
->filename
);
534 if (chr
->logfd
!= -1) {
537 qemu_mutex_destroy(&chr
->chr_write_lock
);
540 static const TypeInfo char_type_info
= {
541 .name
= TYPE_CHARDEV
,
542 .parent
= TYPE_OBJECT
,
543 .instance_size
= sizeof(Chardev
),
544 .instance_init
= char_init
,
545 .instance_finalize
= char_finalize
,
547 .class_size
= sizeof(ChardevClass
),
550 static int null_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
555 static void null_chr_open(Chardev
*chr
,
556 ChardevBackend
*backend
,
563 static const CharDriver null_driver
= {
564 .kind
= CHARDEV_BACKEND_KIND_NULL
,
567 static void char_null_class_init(ObjectClass
*oc
, void *data
)
569 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
571 cc
->open
= null_chr_open
;
572 cc
->chr_write
= null_chr_write
;
575 static const TypeInfo char_null_type_info
= {
576 .name
= TYPE_CHARDEV_NULL
,
577 .parent
= TYPE_CHARDEV
,
578 .instance_size
= sizeof(Chardev
),
579 .class_init
= char_null_class_init
,
582 /* MUX driver for serial I/O splitting */
584 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
585 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
588 CharBackend
*backends
[MAX_MUX
];
594 /* Intermediate input buffer allows to catch escape sequences even if the
595 currently active device is not accepting any input - but only until it
597 unsigned char buffer
[MAX_MUX
][MUX_BUFFER_SIZE
];
602 /* Protected by the Chardev chr_write_lock. */
604 int64_t timestamps_start
;
607 #define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
609 /* Called with chr_write_lock held. */
610 static int mux_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
612 MuxChardev
*d
= MUX_CHARDEV(chr
);
614 if (!d
->timestamps
) {
615 ret
= qemu_chr_fe_write(&d
->chr
, buf
, len
);
620 for (i
= 0; i
< len
; i
++) {
626 ti
= qemu_clock_get_ms(QEMU_CLOCK_REALTIME
);
627 if (d
->timestamps_start
== -1)
628 d
->timestamps_start
= ti
;
629 ti
-= d
->timestamps_start
;
631 snprintf(buf1
, sizeof(buf1
),
632 "[%02d:%02d:%02d.%03d] ",
637 /* XXX this blocks entire thread. Rewrite to use
638 * qemu_chr_fe_write and background I/O callbacks */
639 qemu_chr_fe_write_all(&d
->chr
,
640 (uint8_t *)buf1
, strlen(buf1
));
643 ret
+= qemu_chr_fe_write(&d
->chr
, buf
+ i
, 1);
644 if (buf
[i
] == '\n') {
652 static const char * const mux_help
[] = {
653 "% h print this help\n\r",
654 "% x exit emulator\n\r",
655 "% s save disk data back to file (if -snapshot)\n\r",
656 "% t toggle console timestamps\n\r",
657 "% b send break (magic sysrq)\n\r",
658 "% c switch between console and monitor\n\r",
663 int term_escape_char
= 0x01; /* ctrl-a is used for escape */
664 static void mux_print_help(Chardev
*chr
)
667 char ebuf
[15] = "Escape-Char";
668 char cbuf
[50] = "\n\r";
670 if (term_escape_char
> 0 && term_escape_char
< 26) {
671 snprintf(cbuf
, sizeof(cbuf
), "\n\r");
672 snprintf(ebuf
, sizeof(ebuf
), "C-%c", term_escape_char
- 1 + 'a');
674 snprintf(cbuf
, sizeof(cbuf
),
675 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
678 /* XXX this blocks entire thread. Rewrite to use
679 * qemu_chr_fe_write and background I/O callbacks */
680 qemu_chr_write_all(chr
, (uint8_t *)cbuf
, strlen(cbuf
));
681 for (i
= 0; mux_help
[i
] != NULL
; i
++) {
682 for (j
=0; mux_help
[i
][j
] != '\0'; j
++) {
683 if (mux_help
[i
][j
] == '%')
684 qemu_chr_write_all(chr
, (uint8_t *)ebuf
, strlen(ebuf
));
686 qemu_chr_write_all(chr
, (uint8_t *)&mux_help
[i
][j
], 1);
691 static void mux_chr_send_event(MuxChardev
*d
, int mux_nr
, int event
)
693 CharBackend
*be
= d
->backends
[mux_nr
];
695 if (be
&& be
->chr_event
) {
696 be
->chr_event(be
->opaque
, event
);
700 static int mux_proc_byte(Chardev
*chr
, MuxChardev
*d
, int ch
)
702 if (d
->term_got_escape
) {
703 d
->term_got_escape
= 0;
704 if (ch
== term_escape_char
)
713 const char *term
= "QEMU: Terminated\n\r";
714 qemu_chr_write_all(chr
, (uint8_t *)term
, strlen(term
));
722 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
725 assert(d
->mux_cnt
> 0); /* handler registered with first fe */
726 /* Switch to the next registered device */
727 mux_set_focus(chr
, (d
->focus
+ 1) % d
->mux_cnt
);
730 d
->timestamps
= !d
->timestamps
;
731 d
->timestamps_start
= -1;
735 } else if (ch
== term_escape_char
) {
736 d
->term_got_escape
= 1;
744 static void mux_chr_accept_input(Chardev
*chr
)
746 MuxChardev
*d
= MUX_CHARDEV(chr
);
748 CharBackend
*be
= d
->backends
[m
];
750 while (be
&& d
->prod
[m
] != d
->cons
[m
] &&
751 be
->chr_can_read
&& be
->chr_can_read(be
->opaque
)) {
752 be
->chr_read(be
->opaque
,
753 &d
->buffer
[m
][d
->cons
[m
]++ & MUX_BUFFER_MASK
], 1);
757 static int mux_chr_can_read(void *opaque
)
759 MuxChardev
*d
= MUX_CHARDEV(opaque
);
761 CharBackend
*be
= d
->backends
[m
];
763 if ((d
->prod
[m
] - d
->cons
[m
]) < MUX_BUFFER_SIZE
) {
767 if (be
&& be
->chr_can_read
) {
768 return be
->chr_can_read(be
->opaque
);
774 static void mux_chr_read(void *opaque
, const uint8_t *buf
, int size
)
776 Chardev
*chr
= CHARDEV(opaque
);
777 MuxChardev
*d
= MUX_CHARDEV(opaque
);
779 CharBackend
*be
= d
->backends
[m
];
782 mux_chr_accept_input(opaque
);
784 for (i
= 0; i
< size
; i
++)
785 if (mux_proc_byte(chr
, d
, buf
[i
])) {
786 if (d
->prod
[m
] == d
->cons
[m
] &&
787 be
&& be
->chr_can_read
&&
788 be
->chr_can_read(be
->opaque
))
789 be
->chr_read(be
->opaque
, &buf
[i
], 1);
791 d
->buffer
[m
][d
->prod
[m
]++ & MUX_BUFFER_MASK
] = buf
[i
];
795 static bool muxes_realized
;
797 static void mux_chr_event(void *opaque
, int event
)
799 MuxChardev
*d
= MUX_CHARDEV(opaque
);
802 if (!muxes_realized
) {
806 /* Send the event to all registered listeners */
807 for (i
= 0; i
< d
->mux_cnt
; i
++)
808 mux_chr_send_event(d
, i
, event
);
812 * Called after processing of default and command-line-specified
813 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
814 * to a mux chardev. This is done here to ensure that
815 * output/prompts/banners are only displayed for the FE that has
816 * focus when initial command-line processing/machine init is
819 * After this point, any new FE attached to any new or existing
820 * mux will receive CHR_EVENT_OPENED notifications for the BE
823 static void muxes_realize_done(Notifier
*notifier
, void *unused
)
827 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
828 if (CHARDEV_IS_MUX(chr
)) {
829 MuxChardev
*d
= MUX_CHARDEV(chr
);
832 /* send OPENED to all already-attached FEs */
833 for (i
= 0; i
< d
->mux_cnt
; i
++) {
834 mux_chr_send_event(d
, i
, CHR_EVENT_OPENED
);
836 /* mark mux as OPENED so any new FEs will immediately receive
839 qemu_chr_be_generic_open(chr
);
842 muxes_realized
= true;
845 static Notifier muxes_realize_notify
= {
846 .notify
= muxes_realize_done
,
849 static GSource
*mux_chr_add_watch(Chardev
*s
, GIOCondition cond
)
851 MuxChardev
*d
= MUX_CHARDEV(s
);
852 Chardev
*chr
= qemu_chr_fe_get_driver(&d
->chr
);
853 ChardevClass
*cc
= CHARDEV_GET_CLASS(chr
);
855 if (!cc
->chr_add_watch
) {
859 return cc
->chr_add_watch(chr
, cond
);
862 static void char_mux_finalize(Object
*obj
)
864 MuxChardev
*d
= MUX_CHARDEV(obj
);
867 for (i
= 0; i
< d
->mux_cnt
; i
++) {
868 CharBackend
*be
= d
->backends
[i
];
873 qemu_chr_fe_deinit(&d
->chr
);
876 static void mux_chr_set_handlers(Chardev
*chr
, GMainContext
*context
)
878 MuxChardev
*d
= MUX_CHARDEV(chr
);
880 /* Fix up the real driver with mux routines */
881 qemu_chr_fe_set_handlers(&d
->chr
,
889 static void mux_set_focus(Chardev
*chr
, int focus
)
891 MuxChardev
*d
= MUX_CHARDEV(chr
);
894 assert(focus
< d
->mux_cnt
);
896 if (d
->focus
!= -1) {
897 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_OUT
);
901 chr
->be
= d
->backends
[focus
];
902 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_IN
);
905 static void qemu_chr_open_mux(Chardev
*chr
,
906 ChardevBackend
*backend
,
910 ChardevMux
*mux
= backend
->u
.mux
.data
;
912 MuxChardev
*d
= MUX_CHARDEV(chr
);
914 drv
= qemu_chr_find(mux
->chardev
);
916 error_setg(errp
, "mux: base chardev %s not found", mux
->chardev
);
921 /* only default to opened state if we've realized the initial
924 *be_opened
= muxes_realized
;
925 qemu_chr_fe_init(&d
->chr
, drv
, errp
);
928 Chardev
*qemu_chr_fe_get_driver(CharBackend
*be
)
933 bool qemu_chr_fe_init(CharBackend
*b
, Chardev
*s
, Error
**errp
)
937 if (CHARDEV_IS_MUX(s
)) {
938 MuxChardev
*d
= MUX_CHARDEV(s
);
940 if (d
->mux_cnt
>= MAX_MUX
) {
944 d
->backends
[d
->mux_cnt
] = b
;
958 error_setg(errp
, QERR_DEVICE_IN_USE
, s
->label
);
962 static bool qemu_chr_is_busy(Chardev
*s
)
964 if (CHARDEV_IS_MUX(s
)) {
965 MuxChardev
*d
= MUX_CHARDEV(s
);
966 return d
->mux_cnt
>= 0;
968 return s
->be
!= NULL
;
972 void qemu_chr_fe_deinit(CharBackend
*b
)
977 qemu_chr_fe_set_handlers(b
, NULL
, NULL
, NULL
, NULL
, NULL
, true);
978 if (b
->chr
->be
== b
) {
981 if (CHARDEV_IS_MUX(b
->chr
)) {
982 MuxChardev
*d
= MUX_CHARDEV(b
->chr
);
983 d
->backends
[b
->tag
] = NULL
;
989 void qemu_chr_fe_set_handlers(CharBackend
*b
,
990 IOCanReadHandler
*fd_can_read
,
991 IOReadHandler
*fd_read
,
992 IOEventHandler
*fd_event
,
994 GMainContext
*context
,
1006 cc
= CHARDEV_GET_CLASS(s
);
1007 if (!opaque
&& !fd_can_read
&& !fd_read
&& !fd_event
) {
1009 remove_fd_in_watch(s
);
1013 b
->chr_can_read
= fd_can_read
;
1014 b
->chr_read
= fd_read
;
1015 b
->chr_event
= fd_event
;
1017 if (cc
->chr_update_read_handler
) {
1018 cc
->chr_update_read_handler(s
, context
);
1022 qemu_chr_fe_set_open(b
, fe_open
);
1026 qemu_chr_fe_take_focus(b
);
1027 /* We're connecting to an already opened device, so let's make sure we
1028 also get the open event */
1030 qemu_chr_be_generic_open(s
);
1034 if (CHARDEV_IS_MUX(s
)) {
1035 mux_chr_set_handlers(s
, context
);
1039 void qemu_chr_fe_take_focus(CharBackend
*b
)
1045 if (CHARDEV_IS_MUX(b
->chr
)) {
1046 mux_set_focus(b
->chr
, b
->tag
);
1050 typedef struct IOWatchPoll
1057 IOCanReadHandler
*fd_can_read
;
1058 GSourceFunc fd_read
;
1060 GMainContext
*context
;
1063 static IOWatchPoll
*io_watch_poll_from_source(GSource
*source
)
1065 return container_of(source
, IOWatchPoll
, parent
);
1068 static gboolean
io_watch_poll_prepare(GSource
*source
,
1071 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
1072 bool now_active
= iwp
->fd_can_read(iwp
->opaque
) > 0;
1073 bool was_active
= iwp
->src
!= NULL
;
1074 if (was_active
== now_active
) {
1079 iwp
->src
= qio_channel_create_watch(
1080 iwp
->ioc
, G_IO_IN
| G_IO_ERR
| G_IO_HUP
| G_IO_NVAL
);
1081 g_source_set_callback(iwp
->src
, iwp
->fd_read
, iwp
->opaque
, NULL
);
1082 g_source_attach(iwp
->src
, iwp
->context
);
1084 g_source_destroy(iwp
->src
);
1085 g_source_unref(iwp
->src
);
1091 static gboolean
io_watch_poll_check(GSource
*source
)
1096 static gboolean
io_watch_poll_dispatch(GSource
*source
, GSourceFunc callback
,
1102 static void io_watch_poll_finalize(GSource
*source
)
1104 /* Due to a glib bug, removing the last reference to a source
1105 * inside a finalize callback causes recursive locking (and a
1106 * deadlock). This is not a problem inside other callbacks,
1107 * including dispatch callbacks, so we call io_remove_watch_poll
1108 * to remove this source. At this point, iwp->src must
1109 * be NULL, or we would leak it.
1111 * This would be solved much more elegantly by child sources,
1112 * but we support older glib versions that do not have them.
1114 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
1115 assert(iwp
->src
== NULL
);
1118 static GSourceFuncs io_watch_poll_funcs
= {
1119 .prepare
= io_watch_poll_prepare
,
1120 .check
= io_watch_poll_check
,
1121 .dispatch
= io_watch_poll_dispatch
,
1122 .finalize
= io_watch_poll_finalize
,
1125 /* Can only be used for read */
1126 static guint
io_add_watch_poll(Chardev
*chr
,
1128 IOCanReadHandler
*fd_can_read
,
1129 QIOChannelFunc fd_read
,
1131 GMainContext
*context
)
1137 iwp
= (IOWatchPoll
*) g_source_new(&io_watch_poll_funcs
,
1138 sizeof(IOWatchPoll
));
1139 iwp
->fd_can_read
= fd_can_read
;
1140 iwp
->opaque
= user_data
;
1142 iwp
->fd_read
= (GSourceFunc
) fd_read
;
1144 iwp
->context
= context
;
1146 name
= g_strdup_printf("chardev-iowatch-%s", chr
->label
);
1147 g_source_set_name((GSource
*)iwp
, name
);
1150 tag
= g_source_attach(&iwp
->parent
, context
);
1151 g_source_unref(&iwp
->parent
);
1155 static void io_remove_watch_poll(guint tag
)
1160 g_return_if_fail (tag
> 0);
1162 source
= g_main_context_find_source_by_id(NULL
, tag
);
1163 g_return_if_fail (source
!= NULL
);
1165 iwp
= io_watch_poll_from_source(source
);
1167 g_source_destroy(iwp
->src
);
1168 g_source_unref(iwp
->src
);
1171 g_source_destroy(&iwp
->parent
);
1174 static void remove_fd_in_watch(Chardev
*chr
)
1176 if (chr
->fd_in_tag
) {
1177 io_remove_watch_poll(chr
->fd_in_tag
);
1183 static int io_channel_send_full(QIOChannel
*ioc
,
1184 const void *buf
, size_t len
,
1185 int *fds
, size_t nfds
)
1189 while (offset
< len
) {
1191 struct iovec iov
= { .iov_base
= (char *)buf
+ offset
,
1192 .iov_len
= len
- offset
};
1194 ret
= qio_channel_writev_full(
1197 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
1204 } else if (ret
< 0) {
1217 static int io_channel_send(QIOChannel
*ioc
, const void *buf
, size_t len
)
1219 return io_channel_send_full(ioc
, buf
, len
, NULL
, 0);
1222 typedef struct FDChardev
{
1225 QIOChannel
*ioc_in
, *ioc_out
;
1229 #define TYPE_CHARDEV_FD "chardev-fd"
1230 #define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD)
1232 /* Called with chr_write_lock held. */
1233 static int fd_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
1235 FDChardev
*s
= FD_CHARDEV(chr
);
1237 return io_channel_send(s
->ioc_out
, buf
, len
);
1240 static gboolean
fd_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
1242 Chardev
*chr
= CHARDEV(opaque
);
1243 FDChardev
*s
= FD_CHARDEV(opaque
);
1245 uint8_t buf
[READ_BUF_LEN
];
1249 if (len
> s
->max_size
) {
1256 ret
= qio_channel_read(
1257 chan
, (gchar
*)buf
, len
, NULL
);
1259 remove_fd_in_watch(chr
);
1260 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1264 qemu_chr_be_write(chr
, buf
, ret
);
1270 static int fd_chr_read_poll(void *opaque
)
1272 Chardev
*chr
= CHARDEV(opaque
);
1273 FDChardev
*s
= FD_CHARDEV(opaque
);
1275 s
->max_size
= qemu_chr_be_can_write(chr
);
1279 static GSource
*fd_chr_add_watch(Chardev
*chr
, GIOCondition cond
)
1281 FDChardev
*s
= FD_CHARDEV(chr
);
1282 return qio_channel_create_watch(s
->ioc_out
, cond
);
1285 static void fd_chr_update_read_handler(Chardev
*chr
,
1286 GMainContext
*context
)
1288 FDChardev
*s
= FD_CHARDEV(chr
);
1290 remove_fd_in_watch(chr
);
1292 chr
->fd_in_tag
= io_add_watch_poll(chr
, s
->ioc_in
,
1299 static void fd_chr_free(struct Chardev
*chr
)
1301 FDChardev
*s
= FD_CHARDEV(chr
);
1303 remove_fd_in_watch(chr
);
1305 object_unref(OBJECT(s
->ioc_in
));
1308 object_unref(OBJECT(s
->ioc_out
));
1311 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1314 /* open a character device to a unix fd */
1315 static void qemu_chr_open_fd(Chardev
*chr
,
1316 int fd_in
, int fd_out
)
1318 FDChardev
*s
= FD_CHARDEV(chr
);
1321 s
->ioc_in
= QIO_CHANNEL(qio_channel_file_new_fd(fd_in
));
1322 name
= g_strdup_printf("chardev-file-in-%s", chr
->label
);
1323 qio_channel_set_name(QIO_CHANNEL(s
->ioc_in
), name
);
1325 s
->ioc_out
= QIO_CHANNEL(qio_channel_file_new_fd(fd_out
));
1326 name
= g_strdup_printf("chardev-file-out-%s", chr
->label
);
1327 qio_channel_set_name(QIO_CHANNEL(s
->ioc_out
), name
);
1329 qemu_set_nonblock(fd_out
);
1333 static void char_fd_class_init(ObjectClass
*oc
, void *data
)
1335 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
1337 cc
->chr_add_watch
= fd_chr_add_watch
;
1338 cc
->chr_write
= fd_chr_write
;
1339 cc
->chr_update_read_handler
= fd_chr_update_read_handler
;
1340 cc
->chr_free
= fd_chr_free
;
1343 static const TypeInfo char_fd_type_info
= {
1344 .name
= TYPE_CHARDEV_FD
,
1345 .parent
= TYPE_CHARDEV
,
1346 .instance_size
= sizeof(FDChardev
),
1347 .class_init
= char_fd_class_init
,
1351 static void qemu_chr_open_pipe(Chardev
*chr
,
1352 ChardevBackend
*backend
,
1356 ChardevHostdev
*opts
= backend
->u
.pipe
.data
;
1360 const char *filename
= opts
->device
;
1362 filename_in
= g_strdup_printf("%s.in", filename
);
1363 filename_out
= g_strdup_printf("%s.out", filename
);
1364 TFR(fd_in
= qemu_open(filename_in
, O_RDWR
| O_BINARY
));
1365 TFR(fd_out
= qemu_open(filename_out
, O_RDWR
| O_BINARY
));
1366 g_free(filename_in
);
1367 g_free(filename_out
);
1368 if (fd_in
< 0 || fd_out
< 0) {
1373 TFR(fd_in
= fd_out
= qemu_open(filename
, O_RDWR
| O_BINARY
));
1375 error_setg_file_open(errp
, errno
, filename
);
1379 qemu_chr_open_fd(chr
, fd_in
, fd_out
);
1382 /* init terminal so that we can grab keys */
1383 static struct termios oldtty
;
1384 static int old_fd0_flags
;
1385 static bool stdio_in_use
;
1386 static bool stdio_allow_signal
;
1387 static bool stdio_echo_state
;
1389 static void qemu_chr_set_echo_stdio(Chardev
*chr
, bool echo
);
1391 static void term_exit(void)
1393 tcsetattr (0, TCSANOW
, &oldtty
);
1394 fcntl(0, F_SETFL
, old_fd0_flags
);
1397 static void term_stdio_handler(int sig
)
1399 /* restore echo after resume from suspend. */
1400 qemu_chr_set_echo_stdio(NULL
, stdio_echo_state
);
1403 static void qemu_chr_set_echo_stdio(Chardev
*chr
, bool echo
)
1407 stdio_echo_state
= echo
;
1410 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1411 |INLCR
|IGNCR
|ICRNL
|IXON
);
1412 tty
.c_oflag
|= OPOST
;
1413 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
);
1414 tty
.c_cflag
&= ~(CSIZE
|PARENB
);
1417 tty
.c_cc
[VTIME
] = 0;
1419 if (!stdio_allow_signal
)
1420 tty
.c_lflag
&= ~ISIG
;
1422 tcsetattr (0, TCSANOW
, &tty
);
1425 static void qemu_chr_free_stdio(struct Chardev
*chr
)
1431 static void qemu_chr_open_stdio(Chardev
*chr
,
1432 ChardevBackend
*backend
,
1436 ChardevStdio
*opts
= backend
->u
.stdio
.data
;
1437 struct sigaction act
;
1439 if (is_daemonized()) {
1440 error_setg(errp
, "cannot use stdio with -daemonize");
1445 error_setg(errp
, "cannot use stdio by multiple character devices");
1449 stdio_in_use
= true;
1450 old_fd0_flags
= fcntl(0, F_GETFL
);
1451 tcgetattr(0, &oldtty
);
1452 qemu_set_nonblock(0);
1455 memset(&act
, 0, sizeof(act
));
1456 act
.sa_handler
= term_stdio_handler
;
1457 sigaction(SIGCONT
, &act
, NULL
);
1459 qemu_chr_open_fd(chr
, 0, 1);
1461 if (opts
->has_signal
) {
1462 stdio_allow_signal
= opts
->signal
;
1464 qemu_chr_set_echo_stdio(chr
, false);
1467 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1468 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1469 || defined(__GLIBC__)
1471 #define HAVE_CHARDEV_SERIAL 1
1472 #define HAVE_CHARDEV_PTY 1
1479 /* Protected by the Chardev chr_write_lock. */
1485 #define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY)
1487 static void pty_chr_update_read_handler_locked(Chardev
*chr
);
1488 static void pty_chr_state(Chardev
*chr
, int connected
);
1490 static gboolean
pty_chr_timer(gpointer opaque
)
1492 struct Chardev
*chr
= CHARDEV(opaque
);
1493 PtyChardev
*s
= PTY_CHARDEV(opaque
);
1495 qemu_mutex_lock(&chr
->chr_write_lock
);
1498 if (!s
->connected
) {
1500 pty_chr_update_read_handler_locked(chr
);
1502 qemu_mutex_unlock(&chr
->chr_write_lock
);
1506 /* Called with chr_write_lock held. */
1507 static void pty_chr_rearm_timer(Chardev
*chr
, int ms
)
1509 PtyChardev
*s
= PTY_CHARDEV(chr
);
1513 g_source_remove(s
->timer_tag
);
1518 name
= g_strdup_printf("pty-timer-secs-%s", chr
->label
);
1519 s
->timer_tag
= g_timeout_add_seconds(1, pty_chr_timer
, chr
);
1521 name
= g_strdup_printf("pty-timer-ms-%s", chr
->label
);
1522 s
->timer_tag
= g_timeout_add(ms
, pty_chr_timer
, chr
);
1524 g_source_set_name_by_id(s
->timer_tag
, name
);
1528 /* Called with chr_write_lock held. */
1529 static void pty_chr_update_read_handler_locked(Chardev
*chr
)
1531 PtyChardev
*s
= PTY_CHARDEV(chr
);
1534 QIOChannelFile
*fioc
= QIO_CHANNEL_FILE(s
->ioc
);
1537 pfd
.events
= G_IO_OUT
;
1540 rc
= g_poll(&pfd
, 1, 0);
1541 } while (rc
== -1 && errno
== EINTR
);
1544 if (pfd
.revents
& G_IO_HUP
) {
1545 pty_chr_state(chr
, 0);
1547 pty_chr_state(chr
, 1);
1551 static void pty_chr_update_read_handler(Chardev
*chr
,
1552 GMainContext
*context
)
1554 qemu_mutex_lock(&chr
->chr_write_lock
);
1555 pty_chr_update_read_handler_locked(chr
);
1556 qemu_mutex_unlock(&chr
->chr_write_lock
);
1559 /* Called with chr_write_lock held. */
1560 static int char_pty_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
1562 PtyChardev
*s
= PTY_CHARDEV(chr
);
1564 if (!s
->connected
) {
1565 /* guest sends data, check for (re-)connect */
1566 pty_chr_update_read_handler_locked(chr
);
1567 if (!s
->connected
) {
1571 return io_channel_send(s
->ioc
, buf
, len
);
1574 static GSource
*pty_chr_add_watch(Chardev
*chr
, GIOCondition cond
)
1576 PtyChardev
*s
= PTY_CHARDEV(chr
);
1577 if (!s
->connected
) {
1580 return qio_channel_create_watch(s
->ioc
, cond
);
1583 static int pty_chr_read_poll(void *opaque
)
1585 Chardev
*chr
= CHARDEV(opaque
);
1586 PtyChardev
*s
= PTY_CHARDEV(opaque
);
1588 s
->read_bytes
= qemu_chr_be_can_write(chr
);
1589 return s
->read_bytes
;
1592 static gboolean
pty_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
1594 Chardev
*chr
= CHARDEV(opaque
);
1595 PtyChardev
*s
= PTY_CHARDEV(opaque
);
1597 uint8_t buf
[READ_BUF_LEN
];
1601 if (len
> s
->read_bytes
)
1602 len
= s
->read_bytes
;
1606 ret
= qio_channel_read(s
->ioc
, (char *)buf
, len
, NULL
);
1608 pty_chr_state(chr
, 0);
1611 pty_chr_state(chr
, 1);
1612 qemu_chr_be_write(chr
, buf
, ret
);
1617 static gboolean
qemu_chr_be_generic_open_func(gpointer opaque
)
1619 Chardev
*chr
= CHARDEV(opaque
);
1620 PtyChardev
*s
= PTY_CHARDEV(opaque
);
1623 qemu_chr_be_generic_open(chr
);
1627 /* Called with chr_write_lock held. */
1628 static void pty_chr_state(Chardev
*chr
, int connected
)
1630 PtyChardev
*s
= PTY_CHARDEV(chr
);
1634 g_source_remove(s
->open_tag
);
1637 remove_fd_in_watch(chr
);
1639 /* (re-)connect poll interval for idle guests: once per second.
1640 * We check more frequently in case the guests sends data to
1641 * the virtual device linked to our pty. */
1642 pty_chr_rearm_timer(chr
, 1000);
1645 g_source_remove(s
->timer_tag
);
1648 if (!s
->connected
) {
1649 g_assert(s
->open_tag
== 0);
1651 s
->open_tag
= g_idle_add(qemu_chr_be_generic_open_func
, chr
);
1653 if (!chr
->fd_in_tag
) {
1654 chr
->fd_in_tag
= io_add_watch_poll(chr
, s
->ioc
,
1662 static void pty_chr_free(struct Chardev
*chr
)
1664 PtyChardev
*s
= PTY_CHARDEV(chr
);
1666 qemu_mutex_lock(&chr
->chr_write_lock
);
1667 pty_chr_state(chr
, 0);
1668 object_unref(OBJECT(s
->ioc
));
1670 g_source_remove(s
->timer_tag
);
1673 qemu_mutex_unlock(&chr
->chr_write_lock
);
1674 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1677 static void char_pty_open(Chardev
*chr
,
1678 ChardevBackend
*backend
,
1683 int master_fd
, slave_fd
;
1684 char pty_name
[PATH_MAX
];
1687 master_fd
= qemu_openpty_raw(&slave_fd
, pty_name
);
1688 if (master_fd
< 0) {
1689 error_setg_errno(errp
, errno
, "Failed to create PTY");
1694 qemu_set_nonblock(master_fd
);
1696 chr
->filename
= g_strdup_printf("pty:%s", pty_name
);
1697 error_report("char device redirected to %s (label %s)",
1698 pty_name
, chr
->label
);
1700 s
= PTY_CHARDEV(chr
);
1701 s
->ioc
= QIO_CHANNEL(qio_channel_file_new_fd(master_fd
));
1702 name
= g_strdup_printf("chardev-pty-%s", chr
->label
);
1703 qio_channel_set_name(QIO_CHANNEL(s
->ioc
), name
);
1709 static const CharDriver pty_driver
= {
1710 .kind
= CHARDEV_BACKEND_KIND_PTY
,
1713 static void char_pty_class_init(ObjectClass
*oc
, void *data
)
1715 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
1717 cc
->open
= char_pty_open
;
1718 cc
->chr_write
= char_pty_chr_write
;
1719 cc
->chr_update_read_handler
= pty_chr_update_read_handler
;
1720 cc
->chr_add_watch
= pty_chr_add_watch
;
1721 cc
->chr_free
= pty_chr_free
;
1724 static const TypeInfo char_pty_type_info
= {
1725 .name
= TYPE_CHARDEV_PTY
,
1726 .parent
= TYPE_CHARDEV
,
1727 .instance_size
= sizeof(PtyChardev
),
1728 .class_init
= char_pty_class_init
,
1731 static void tty_serial_init(int fd
, int speed
,
1732 int parity
, int data_bits
, int stop_bits
)
1738 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1739 speed
, parity
, data_bits
, stop_bits
);
1741 tcgetattr (fd
, &tty
);
1743 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1744 speed
= speed
* 10 / 11;
1761 /* Non-Posix values follow. They may be unsupported on some systems. */
1763 check_speed(115200);
1765 check_speed(230400);
1768 check_speed(460800);
1771 check_speed(500000);
1774 check_speed(576000);
1777 check_speed(921600);
1780 check_speed(1000000);
1783 check_speed(1152000);
1786 check_speed(1500000);
1789 check_speed(2000000);
1792 check_speed(2500000);
1795 check_speed(3000000);
1798 check_speed(3500000);
1801 check_speed(4000000);
1806 cfsetispeed(&tty
, spd
);
1807 cfsetospeed(&tty
, spd
);
1809 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1810 |INLCR
|IGNCR
|ICRNL
|IXON
);
1811 tty
.c_oflag
|= OPOST
;
1812 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
|ISIG
);
1813 tty
.c_cflag
&= ~(CSIZE
|PARENB
|PARODD
|CRTSCTS
|CSTOPB
);
1834 tty
.c_cflag
|= PARENB
;
1837 tty
.c_cflag
|= PARENB
| PARODD
;
1841 tty
.c_cflag
|= CSTOPB
;
1843 tcsetattr (fd
, TCSANOW
, &tty
);
1846 static int tty_serial_ioctl(Chardev
*chr
, int cmd
, void *arg
)
1848 FDChardev
*s
= FD_CHARDEV(chr
);
1849 QIOChannelFile
*fioc
= QIO_CHANNEL_FILE(s
->ioc_in
);
1852 case CHR_IOCTL_SERIAL_SET_PARAMS
:
1854 QEMUSerialSetParams
*ssp
= arg
;
1855 tty_serial_init(fioc
->fd
,
1856 ssp
->speed
, ssp
->parity
,
1857 ssp
->data_bits
, ssp
->stop_bits
);
1860 case CHR_IOCTL_SERIAL_SET_BREAK
:
1862 int enable
= *(int *)arg
;
1864 tcsendbreak(fioc
->fd
, 1);
1868 case CHR_IOCTL_SERIAL_GET_TIOCM
:
1871 int *targ
= (int *)arg
;
1872 ioctl(fioc
->fd
, TIOCMGET
, &sarg
);
1874 if (sarg
& TIOCM_CTS
)
1875 *targ
|= CHR_TIOCM_CTS
;
1876 if (sarg
& TIOCM_CAR
)
1877 *targ
|= CHR_TIOCM_CAR
;
1878 if (sarg
& TIOCM_DSR
)
1879 *targ
|= CHR_TIOCM_DSR
;
1880 if (sarg
& TIOCM_RI
)
1881 *targ
|= CHR_TIOCM_RI
;
1882 if (sarg
& TIOCM_DTR
)
1883 *targ
|= CHR_TIOCM_DTR
;
1884 if (sarg
& TIOCM_RTS
)
1885 *targ
|= CHR_TIOCM_RTS
;
1888 case CHR_IOCTL_SERIAL_SET_TIOCM
:
1890 int sarg
= *(int *)arg
;
1892 ioctl(fioc
->fd
, TIOCMGET
, &targ
);
1893 targ
&= ~(CHR_TIOCM_CTS
| CHR_TIOCM_CAR
| CHR_TIOCM_DSR
1894 | CHR_TIOCM_RI
| CHR_TIOCM_DTR
| CHR_TIOCM_RTS
);
1895 if (sarg
& CHR_TIOCM_CTS
)
1897 if (sarg
& CHR_TIOCM_CAR
)
1899 if (sarg
& CHR_TIOCM_DSR
)
1901 if (sarg
& CHR_TIOCM_RI
)
1903 if (sarg
& CHR_TIOCM_DTR
)
1905 if (sarg
& CHR_TIOCM_RTS
)
1907 ioctl(fioc
->fd
, TIOCMSET
, &targ
);
1916 static void qemu_chr_free_tty(Chardev
*chr
)
1920 #endif /* __linux__ || __sun__ */
1922 #if defined(__linux__)
1924 #define HAVE_CHARDEV_PARPORT 1
1932 #define PARALLEL_CHARDEV(obj) \
1933 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
1935 static int pp_hw_mode(ParallelChardev
*s
, uint16_t mode
)
1937 if (s
->mode
!= mode
) {
1939 if (ioctl(s
->fd
, PPSETMODE
, &m
) < 0)
1946 static int pp_ioctl(Chardev
*chr
, int cmd
, void *arg
)
1948 ParallelChardev
*drv
= PARALLEL_CHARDEV(chr
);
1953 case CHR_IOCTL_PP_READ_DATA
:
1954 if (ioctl(fd
, PPRDATA
, &b
) < 0)
1956 *(uint8_t *)arg
= b
;
1958 case CHR_IOCTL_PP_WRITE_DATA
:
1959 b
= *(uint8_t *)arg
;
1960 if (ioctl(fd
, PPWDATA
, &b
) < 0)
1963 case CHR_IOCTL_PP_READ_CONTROL
:
1964 if (ioctl(fd
, PPRCONTROL
, &b
) < 0)
1966 /* Linux gives only the lowest bits, and no way to know data
1967 direction! For better compatibility set the fixed upper
1969 *(uint8_t *)arg
= b
| 0xc0;
1971 case CHR_IOCTL_PP_WRITE_CONTROL
:
1972 b
= *(uint8_t *)arg
;
1973 if (ioctl(fd
, PPWCONTROL
, &b
) < 0)
1976 case CHR_IOCTL_PP_READ_STATUS
:
1977 if (ioctl(fd
, PPRSTATUS
, &b
) < 0)
1979 *(uint8_t *)arg
= b
;
1981 case CHR_IOCTL_PP_DATA_DIR
:
1982 if (ioctl(fd
, PPDATADIR
, (int *)arg
) < 0)
1985 case CHR_IOCTL_PP_EPP_READ_ADDR
:
1986 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
1987 struct ParallelIOArg
*parg
= arg
;
1988 int n
= read(fd
, parg
->buffer
, parg
->count
);
1989 if (n
!= parg
->count
) {
1994 case CHR_IOCTL_PP_EPP_READ
:
1995 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
1996 struct ParallelIOArg
*parg
= arg
;
1997 int n
= read(fd
, parg
->buffer
, parg
->count
);
1998 if (n
!= parg
->count
) {
2003 case CHR_IOCTL_PP_EPP_WRITE_ADDR
:
2004 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
2005 struct ParallelIOArg
*parg
= arg
;
2006 int n
= write(fd
, parg
->buffer
, parg
->count
);
2007 if (n
!= parg
->count
) {
2012 case CHR_IOCTL_PP_EPP_WRITE
:
2013 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
2014 struct ParallelIOArg
*parg
= arg
;
2015 int n
= write(fd
, parg
->buffer
, parg
->count
);
2016 if (n
!= parg
->count
) {
2027 static void pp_free(Chardev
*chr
)
2029 ParallelChardev
*drv
= PARALLEL_CHARDEV(chr
);
2032 pp_hw_mode(drv
, IEEE1284_MODE_COMPAT
);
2033 ioctl(fd
, PPRELEASE
);
2035 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2038 static void qemu_chr_open_pp_fd(Chardev
*chr
,
2043 ParallelChardev
*drv
= PARALLEL_CHARDEV(chr
);
2045 if (ioctl(fd
, PPCLAIM
) < 0) {
2046 error_setg_errno(errp
, errno
, "not a parallel port");
2052 drv
->mode
= IEEE1284_MODE_COMPAT
;
2054 #endif /* __linux__ */
2056 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
2058 #define HAVE_CHARDEV_PARPORT 1
2065 #define PARALLEL_CHARDEV(obj) \
2066 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
2068 static int pp_ioctl(Chardev
*chr
, int cmd
, void *arg
)
2070 ParallelChardev
*drv
= PARALLEL_CHARDEV(chr
);
2074 case CHR_IOCTL_PP_READ_DATA
:
2075 if (ioctl(drv
->fd
, PPIGDATA
, &b
) < 0) {
2078 *(uint8_t *)arg
= b
;
2080 case CHR_IOCTL_PP_WRITE_DATA
:
2081 b
= *(uint8_t *)arg
;
2082 if (ioctl(drv
->fd
, PPISDATA
, &b
) < 0) {
2086 case CHR_IOCTL_PP_READ_CONTROL
:
2087 if (ioctl(drv
->fd
, PPIGCTRL
, &b
) < 0) {
2090 *(uint8_t *)arg
= b
;
2092 case CHR_IOCTL_PP_WRITE_CONTROL
:
2093 b
= *(uint8_t *)arg
;
2094 if (ioctl(drv
->fd
, PPISCTRL
, &b
) < 0) {
2098 case CHR_IOCTL_PP_READ_STATUS
:
2099 if (ioctl(drv
->fd
, PPIGSTATUS
, &b
) < 0) {
2102 *(uint8_t *)arg
= b
;
2110 static void qemu_chr_open_pp_fd(Chardev
*chr
,
2115 ParallelChardev
*drv
= PARALLEL_CHARDEV(chr
);
2123 #define HAVE_CHARDEV_SERIAL 1
2128 HANDLE hcom
, hrecv
, hsend
;
2133 /* Protected by the Chardev chr_write_lock. */
2137 #define TYPE_CHARDEV_WIN "chardev-win"
2138 #define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
2143 HANDLE hInputReadyEvent
;
2144 HANDLE hInputDoneEvent
;
2145 HANDLE hInputThread
;
2146 uint8_t win_stdio_buf
;
2149 #define TYPE_CHARDEV_WIN_STDIO "chardev-win-stdio"
2150 #define WIN_STDIO_CHARDEV(obj) \
2151 OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
2153 #define NSENDBUF 2048
2154 #define NRECVBUF 2048
2155 #define MAXCONNECT 1
2156 #define NTIMEOUT 5000
2158 static int win_chr_poll(void *opaque
);
2159 static int win_chr_pipe_poll(void *opaque
);
2161 static void win_chr_free(Chardev
*chr
)
2163 WinChardev
*s
= WIN_CHARDEV(chr
);
2166 CloseHandle(s
->hsend
);
2170 CloseHandle(s
->hrecv
);
2174 CloseHandle(s
->hcom
);
2178 qemu_del_polling_cb(win_chr_pipe_poll
, chr
);
2180 qemu_del_polling_cb(win_chr_poll
, chr
);
2182 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2185 static int win_chr_init(Chardev
*chr
, const char *filename
, Error
**errp
)
2187 WinChardev
*s
= WIN_CHARDEV(chr
);
2189 COMMTIMEOUTS cto
= { 0, 0, 0, 0, 0};
2194 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2196 error_setg(errp
, "Failed CreateEvent");
2199 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2201 error_setg(errp
, "Failed CreateEvent");
2205 s
->hcom
= CreateFile(filename
, GENERIC_READ
|GENERIC_WRITE
, 0, NULL
,
2206 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
2207 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
2208 error_setg(errp
, "Failed CreateFile (%lu)", GetLastError());
2213 if (!SetupComm(s
->hcom
, NRECVBUF
, NSENDBUF
)) {
2214 error_setg(errp
, "Failed SetupComm");
2218 ZeroMemory(&comcfg
, sizeof(COMMCONFIG
));
2219 size
= sizeof(COMMCONFIG
);
2220 GetDefaultCommConfig(filename
, &comcfg
, &size
);
2221 comcfg
.dcb
.DCBlength
= sizeof(DCB
);
2222 CommConfigDialog(filename
, NULL
, &comcfg
);
2224 if (!SetCommState(s
->hcom
, &comcfg
.dcb
)) {
2225 error_setg(errp
, "Failed SetCommState");
2229 if (!SetCommMask(s
->hcom
, EV_ERR
)) {
2230 error_setg(errp
, "Failed SetCommMask");
2234 cto
.ReadIntervalTimeout
= MAXDWORD
;
2235 if (!SetCommTimeouts(s
->hcom
, &cto
)) {
2236 error_setg(errp
, "Failed SetCommTimeouts");
2240 if (!ClearCommError(s
->hcom
, &err
, &comstat
)) {
2241 error_setg(errp
, "Failed ClearCommError");
2244 qemu_add_polling_cb(win_chr_poll
, chr
);
2252 /* Called with chr_write_lock held. */
2253 static int win_chr_write(Chardev
*chr
, const uint8_t *buf
, int len1
)
2255 WinChardev
*s
= WIN_CHARDEV(chr
);
2256 DWORD len
, ret
, size
, err
;
2259 ZeroMemory(&s
->osend
, sizeof(s
->osend
));
2260 s
->osend
.hEvent
= s
->hsend
;
2263 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, &s
->osend
);
2265 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, NULL
);
2267 err
= GetLastError();
2268 if (err
== ERROR_IO_PENDING
) {
2269 ret
= GetOverlappedResult(s
->hcom
, &s
->osend
, &size
, TRUE
);
2287 static int win_chr_read_poll(Chardev
*chr
)
2289 WinChardev
*s
= WIN_CHARDEV(chr
);
2291 s
->max_size
= qemu_chr_be_can_write(chr
);
2295 static void win_chr_readfile(Chardev
*chr
)
2297 WinChardev
*s
= WIN_CHARDEV(chr
);
2300 uint8_t buf
[READ_BUF_LEN
];
2303 ZeroMemory(&s
->orecv
, sizeof(s
->orecv
));
2304 s
->orecv
.hEvent
= s
->hrecv
;
2305 ret
= ReadFile(s
->hcom
, buf
, s
->len
, &size
, &s
->orecv
);
2307 err
= GetLastError();
2308 if (err
== ERROR_IO_PENDING
) {
2309 ret
= GetOverlappedResult(s
->hcom
, &s
->orecv
, &size
, TRUE
);
2314 qemu_chr_be_write(chr
, buf
, size
);
2318 static void win_chr_read(Chardev
*chr
)
2320 WinChardev
*s
= WIN_CHARDEV(chr
);
2322 if (s
->len
> s
->max_size
)
2323 s
->len
= s
->max_size
;
2327 win_chr_readfile(chr
);
2330 static int win_chr_poll(void *opaque
)
2332 Chardev
*chr
= CHARDEV(opaque
);
2333 WinChardev
*s
= WIN_CHARDEV(opaque
);
2337 ClearCommError(s
->hcom
, &comerr
, &status
);
2338 if (status
.cbInQue
> 0) {
2339 s
->len
= status
.cbInQue
;
2340 win_chr_read_poll(chr
);
2347 static int win_chr_pipe_poll(void *opaque
)
2349 Chardev
*chr
= CHARDEV(opaque
);
2350 WinChardev
*s
= WIN_CHARDEV(opaque
);
2353 PeekNamedPipe(s
->hcom
, NULL
, 0, NULL
, &size
, NULL
);
2356 win_chr_read_poll(chr
);
2363 static int win_chr_pipe_init(Chardev
*chr
, const char *filename
,
2366 WinChardev
*s
= WIN_CHARDEV(chr
);
2374 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2376 error_setg(errp
, "Failed CreateEvent");
2379 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2381 error_setg(errp
, "Failed CreateEvent");
2385 openname
= g_strdup_printf("\\\\.\\pipe\\%s", filename
);
2386 s
->hcom
= CreateNamedPipe(openname
, PIPE_ACCESS_DUPLEX
| FILE_FLAG_OVERLAPPED
,
2387 PIPE_TYPE_BYTE
| PIPE_READMODE_BYTE
|
2389 MAXCONNECT
, NSENDBUF
, NRECVBUF
, NTIMEOUT
, NULL
);
2391 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
2392 error_setg(errp
, "Failed CreateNamedPipe (%lu)", GetLastError());
2397 ZeroMemory(&ov
, sizeof(ov
));
2398 ov
.hEvent
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2399 ret
= ConnectNamedPipe(s
->hcom
, &ov
);
2401 error_setg(errp
, "Failed ConnectNamedPipe");
2405 ret
= GetOverlappedResult(s
->hcom
, &ov
, &size
, TRUE
);
2407 error_setg(errp
, "Failed GetOverlappedResult");
2409 CloseHandle(ov
.hEvent
);
2416 CloseHandle(ov
.hEvent
);
2419 qemu_add_polling_cb(win_chr_pipe_poll
, chr
);
2428 static void qemu_chr_open_pipe(Chardev
*chr
,
2429 ChardevBackend
*backend
,
2433 ChardevHostdev
*opts
= backend
->u
.pipe
.data
;
2434 const char *filename
= opts
->device
;
2436 if (win_chr_pipe_init(chr
, filename
, errp
) < 0) {
2441 static void qemu_chr_open_win_file(Chardev
*chr
, HANDLE fd_out
)
2443 WinChardev
*s
= WIN_CHARDEV(chr
);
2448 static void char_win_class_init(ObjectClass
*oc
, void *data
)
2450 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
2452 cc
->chr_write
= win_chr_write
;
2453 cc
->chr_free
= win_chr_free
;
2456 static const TypeInfo char_win_type_info
= {
2457 .name
= TYPE_CHARDEV_WIN
,
2458 .parent
= TYPE_CHARDEV
,
2459 .instance_size
= sizeof(WinChardev
),
2460 .class_init
= char_win_class_init
,
2464 static void qemu_chr_open_win_con(Chardev
*chr
,
2465 ChardevBackend
*backend
,
2469 qemu_chr_open_win_file(chr
, GetStdHandle(STD_OUTPUT_HANDLE
));
2472 static const CharDriver console_driver
= {
2473 .kind
= CHARDEV_BACKEND_KIND_CONSOLE
,
2476 static void char_console_class_init(ObjectClass
*oc
, void *data
)
2478 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
2480 cc
->open
= qemu_chr_open_win_con
;
2481 cc
->chr_free
= NULL
;
2484 static const TypeInfo char_console_type_info
= {
2485 .name
= TYPE_CHARDEV_CONSOLE
,
2486 .parent
= TYPE_CHARDEV_WIN
,
2487 .class_init
= char_console_class_init
,
2490 static int win_stdio_write(Chardev
*chr
, const uint8_t *buf
, int len
)
2492 HANDLE hStdOut
= GetStdHandle(STD_OUTPUT_HANDLE
);
2499 if (!WriteFile(hStdOut
, buf
, len1
, &dwSize
, NULL
)) {
2509 static void win_stdio_wait_func(void *opaque
)
2511 Chardev
*chr
= CHARDEV(opaque
);
2512 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(opaque
);
2513 INPUT_RECORD buf
[4];
2518 ret
= ReadConsoleInput(stdio
->hStdIn
, buf
, ARRAY_SIZE(buf
), &dwSize
);
2521 /* Avoid error storm */
2522 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2526 for (i
= 0; i
< dwSize
; i
++) {
2527 KEY_EVENT_RECORD
*kev
= &buf
[i
].Event
.KeyEvent
;
2529 if (buf
[i
].EventType
== KEY_EVENT
&& kev
->bKeyDown
) {
2531 if (kev
->uChar
.AsciiChar
!= 0) {
2532 for (j
= 0; j
< kev
->wRepeatCount
; j
++) {
2533 if (qemu_chr_be_can_write(chr
)) {
2534 uint8_t c
= kev
->uChar
.AsciiChar
;
2535 qemu_chr_be_write(chr
, &c
, 1);
2543 static DWORD WINAPI
win_stdio_thread(LPVOID param
)
2545 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(param
);
2551 /* Wait for one byte */
2552 ret
= ReadFile(stdio
->hStdIn
, &stdio
->win_stdio_buf
, 1, &dwSize
, NULL
);
2554 /* Exit in case of error, continue if nothing read */
2562 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2563 if (stdio
->win_stdio_buf
== '\r') {
2567 /* Signal the main thread and wait until the byte was eaten */
2568 if (!SetEvent(stdio
->hInputReadyEvent
)) {
2571 if (WaitForSingleObject(stdio
->hInputDoneEvent
, INFINITE
)
2577 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2581 static void win_stdio_thread_wait_func(void *opaque
)
2583 Chardev
*chr
= CHARDEV(opaque
);
2584 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(opaque
);
2586 if (qemu_chr_be_can_write(chr
)) {
2587 qemu_chr_be_write(chr
, &stdio
->win_stdio_buf
, 1);
2590 SetEvent(stdio
->hInputDoneEvent
);
2593 static void qemu_chr_set_echo_win_stdio(Chardev
*chr
, bool echo
)
2595 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(chr
);
2598 GetConsoleMode(stdio
->hStdIn
, &dwMode
);
2601 SetConsoleMode(stdio
->hStdIn
, dwMode
| ENABLE_ECHO_INPUT
);
2603 SetConsoleMode(stdio
->hStdIn
, dwMode
& ~ENABLE_ECHO_INPUT
);
2607 static void win_stdio_free(Chardev
*chr
)
2609 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(chr
);
2611 if (stdio
->hInputReadyEvent
!= INVALID_HANDLE_VALUE
) {
2612 CloseHandle(stdio
->hInputReadyEvent
);
2614 if (stdio
->hInputDoneEvent
!= INVALID_HANDLE_VALUE
) {
2615 CloseHandle(stdio
->hInputDoneEvent
);
2617 if (stdio
->hInputThread
!= INVALID_HANDLE_VALUE
) {
2618 TerminateThread(stdio
->hInputThread
, 0);
2622 static const TypeInfo char_win_stdio_type_info
= {
2623 .name
= TYPE_CHARDEV_WIN_STDIO
,
2624 .parent
= TYPE_CHARDEV
,
2625 .instance_size
= sizeof(WinStdioChardev
),
2629 static void qemu_chr_open_stdio(Chardev
*chr
,
2630 ChardevBackend
*backend
,
2634 WinStdioChardev
*stdio
= WIN_STDIO_CHARDEV(chr
);
2638 stdio
->hStdIn
= GetStdHandle(STD_INPUT_HANDLE
);
2639 if (stdio
->hStdIn
== INVALID_HANDLE_VALUE
) {
2640 error_setg(errp
, "cannot open stdio: invalid handle");
2644 is_console
= GetConsoleMode(stdio
->hStdIn
, &dwMode
) != 0;
2647 if (qemu_add_wait_object(stdio
->hStdIn
,
2648 win_stdio_wait_func
, chr
)) {
2649 error_setg(errp
, "qemu_add_wait_object: failed");
2655 stdio
->hInputReadyEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2656 stdio
->hInputDoneEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2657 if (stdio
->hInputReadyEvent
== INVALID_HANDLE_VALUE
2658 || stdio
->hInputDoneEvent
== INVALID_HANDLE_VALUE
) {
2659 error_setg(errp
, "cannot create event");
2662 if (qemu_add_wait_object(stdio
->hInputReadyEvent
,
2663 win_stdio_thread_wait_func
, chr
)) {
2664 error_setg(errp
, "qemu_add_wait_object: failed");
2667 stdio
->hInputThread
= CreateThread(NULL
, 0, win_stdio_thread
,
2670 if (stdio
->hInputThread
== INVALID_HANDLE_VALUE
) {
2671 error_setg(errp
, "cannot create stdio thread");
2676 dwMode
|= ENABLE_LINE_INPUT
;
2679 /* set the terminal in raw mode */
2680 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2681 dwMode
|= ENABLE_PROCESSED_INPUT
;
2684 SetConsoleMode(stdio
->hStdIn
, dwMode
);
2686 qemu_chr_set_echo_win_stdio(chr
, false);
2691 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2693 CloseHandle(stdio
->hInputReadyEvent
);
2694 CloseHandle(stdio
->hInputDoneEvent
);
2696 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2698 #endif /* !_WIN32 */
2700 /***********************************************************/
2701 /* UDP Net console */
2706 uint8_t buf
[READ_BUF_LEN
];
2712 #define UDP_CHARDEV(obj) OBJECT_CHECK(UdpChardev, (obj), TYPE_CHARDEV_UDP)
2714 /* Called with chr_write_lock held. */
2715 static int udp_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
2717 UdpChardev
*s
= UDP_CHARDEV(chr
);
2719 return qio_channel_write(
2720 s
->ioc
, (const char *)buf
, len
, NULL
);
2723 static int udp_chr_read_poll(void *opaque
)
2725 Chardev
*chr
= CHARDEV(opaque
);
2726 UdpChardev
*s
= UDP_CHARDEV(opaque
);
2728 s
->max_size
= qemu_chr_be_can_write(chr
);
2730 /* If there were any stray characters in the queue process them
2733 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2734 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2736 s
->max_size
= qemu_chr_be_can_write(chr
);
2741 static gboolean
udp_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
2743 Chardev
*chr
= CHARDEV(opaque
);
2744 UdpChardev
*s
= UDP_CHARDEV(opaque
);
2747 if (s
->max_size
== 0) {
2750 ret
= qio_channel_read(
2751 s
->ioc
, (char *)s
->buf
, sizeof(s
->buf
), NULL
);
2753 remove_fd_in_watch(chr
);
2759 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2760 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2762 s
->max_size
= qemu_chr_be_can_write(chr
);
2768 static void udp_chr_update_read_handler(Chardev
*chr
,
2769 GMainContext
*context
)
2771 UdpChardev
*s
= UDP_CHARDEV(chr
);
2773 remove_fd_in_watch(chr
);
2775 chr
->fd_in_tag
= io_add_watch_poll(chr
, s
->ioc
,
2782 static void char_udp_finalize(Object
*obj
)
2784 Chardev
*chr
= CHARDEV(obj
);
2785 UdpChardev
*s
= UDP_CHARDEV(obj
);
2787 remove_fd_in_watch(chr
);
2789 object_unref(OBJECT(s
->ioc
));
2791 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2794 /***********************************************************/
2795 /* TCP Net console */
2799 QIOChannel
*ioc
; /* Client I/O channel */
2800 QIOChannelSocket
*sioc
; /* Client master channel */
2801 QIOChannelSocket
*listen_ioc
;
2803 QCryptoTLSCreds
*tls_creds
;
2810 size_t read_msgfds_num
;
2812 size_t write_msgfds_num
;
2814 SocketAddress
*addr
;
2818 guint reconnect_timer
;
2819 int64_t reconnect_time
;
2820 bool connect_err_reported
;
2823 #define SOCKET_CHARDEV(obj) \
2824 OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET)
2826 static gboolean
socket_reconnect_timeout(gpointer opaque
);
2828 static void qemu_chr_socket_restart_timer(Chardev
*chr
)
2830 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2833 assert(s
->connected
== 0);
2834 s
->reconnect_timer
= g_timeout_add_seconds(s
->reconnect_time
,
2835 socket_reconnect_timeout
, chr
);
2836 name
= g_strdup_printf("chardev-socket-reconnect-%s", chr
->label
);
2837 g_source_set_name_by_id(s
->reconnect_timer
, name
);
2841 static void check_report_connect_error(Chardev
*chr
,
2844 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2846 if (!s
->connect_err_reported
) {
2847 error_report("Unable to connect character device %s: %s",
2848 chr
->label
, error_get_pretty(err
));
2849 s
->connect_err_reported
= true;
2851 qemu_chr_socket_restart_timer(chr
);
2854 static gboolean
tcp_chr_accept(QIOChannel
*chan
,
2858 /* Called with chr_write_lock held. */
2859 static int tcp_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
2861 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2864 int ret
= io_channel_send_full(s
->ioc
, buf
, len
,
2866 s
->write_msgfds_num
);
2868 /* free the written msgfds, no matter what */
2869 if (s
->write_msgfds_num
) {
2870 g_free(s
->write_msgfds
);
2871 s
->write_msgfds
= 0;
2872 s
->write_msgfds_num
= 0;
2877 /* XXX: indicate an error ? */
2882 static int tcp_chr_read_poll(void *opaque
)
2884 Chardev
*chr
= CHARDEV(opaque
);
2885 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
2888 s
->max_size
= qemu_chr_be_can_write(chr
);
2893 #define IAC_BREAK 243
2894 static void tcp_chr_process_IAC_bytes(Chardev
*chr
,
2896 uint8_t *buf
, int *size
)
2898 /* Handle any telnet client's basic IAC options to satisfy char by
2899 * char mode with no echo. All IAC options will be removed from
2900 * the buf and the do_telnetopt variable will be used to track the
2901 * state of the width of the IAC information.
2903 * IAC commands come in sets of 3 bytes with the exception of the
2904 * "IAC BREAK" command and the double IAC.
2910 for (i
= 0; i
< *size
; i
++) {
2911 if (s
->do_telnetopt
> 1) {
2912 if ((unsigned char)buf
[i
] == IAC
&& s
->do_telnetopt
== 2) {
2913 /* Double IAC means send an IAC */
2917 s
->do_telnetopt
= 1;
2919 if ((unsigned char)buf
[i
] == IAC_BREAK
&& s
->do_telnetopt
== 2) {
2920 /* Handle IAC break commands by sending a serial break */
2921 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
2926 if (s
->do_telnetopt
>= 4) {
2927 s
->do_telnetopt
= 1;
2930 if ((unsigned char)buf
[i
] == IAC
) {
2931 s
->do_telnetopt
= 2;
2942 static int tcp_get_msgfds(Chardev
*chr
, int *fds
, int num
)
2944 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2946 int to_copy
= (s
->read_msgfds_num
< num
) ? s
->read_msgfds_num
: num
;
2948 assert(num
<= TCP_MAX_FDS
);
2953 memcpy(fds
, s
->read_msgfds
, to_copy
* sizeof(int));
2955 /* Close unused fds */
2956 for (i
= to_copy
; i
< s
->read_msgfds_num
; i
++) {
2957 close(s
->read_msgfds
[i
]);
2960 g_free(s
->read_msgfds
);
2962 s
->read_msgfds_num
= 0;
2968 static int tcp_set_msgfds(Chardev
*chr
, int *fds
, int num
)
2970 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2972 /* clear old pending fd array */
2973 g_free(s
->write_msgfds
);
2974 s
->write_msgfds
= NULL
;
2975 s
->write_msgfds_num
= 0;
2977 if (!s
->connected
||
2978 !qio_channel_has_feature(s
->ioc
,
2979 QIO_CHANNEL_FEATURE_FD_PASS
)) {
2984 s
->write_msgfds
= g_new(int, num
);
2985 memcpy(s
->write_msgfds
, fds
, num
* sizeof(int));
2988 s
->write_msgfds_num
= num
;
2993 static ssize_t
tcp_chr_recv(Chardev
*chr
, char *buf
, size_t len
)
2995 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
2996 struct iovec iov
= { .iov_base
= buf
, .iov_len
= len
};
3000 size_t msgfds_num
= 0;
3002 if (qio_channel_has_feature(s
->ioc
, QIO_CHANNEL_FEATURE_FD_PASS
)) {
3003 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
3004 &msgfds
, &msgfds_num
,
3007 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
3012 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
3015 } else if (ret
== -1) {
3020 /* close and clean read_msgfds */
3021 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3022 close(s
->read_msgfds
[i
]);
3025 if (s
->read_msgfds_num
) {
3026 g_free(s
->read_msgfds
);
3029 s
->read_msgfds
= msgfds
;
3030 s
->read_msgfds_num
= msgfds_num
;
3033 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3034 int fd
= s
->read_msgfds
[i
];
3039 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
3042 #ifndef MSG_CMSG_CLOEXEC
3043 qemu_set_cloexec(fd
);
3050 static GSource
*tcp_chr_add_watch(Chardev
*chr
, GIOCondition cond
)
3052 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3053 return qio_channel_create_watch(s
->ioc
, cond
);
3056 static void tcp_chr_free_connection(Chardev
*chr
)
3058 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3061 if (!s
->connected
) {
3065 if (s
->read_msgfds_num
) {
3066 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3067 close(s
->read_msgfds
[i
]);
3069 g_free(s
->read_msgfds
);
3070 s
->read_msgfds
= NULL
;
3071 s
->read_msgfds_num
= 0;
3074 tcp_set_msgfds(chr
, NULL
, 0);
3075 remove_fd_in_watch(chr
);
3076 object_unref(OBJECT(s
->sioc
));
3078 object_unref(OBJECT(s
->ioc
));
3080 g_free(chr
->filename
);
3081 chr
->filename
= NULL
;
3085 static void tcp_chr_disconnect(Chardev
*chr
)
3087 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3089 if (!s
->connected
) {
3093 tcp_chr_free_connection(chr
);
3095 if (s
->listen_ioc
) {
3096 s
->listen_tag
= qio_channel_add_watch(
3097 QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
, tcp_chr_accept
, chr
, NULL
);
3099 chr
->filename
= SocketAddress_to_str("disconnected:", s
->addr
,
3100 s
->is_listen
, s
->is_telnet
);
3101 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
3102 if (s
->reconnect_time
) {
3103 qemu_chr_socket_restart_timer(chr
);
3107 static gboolean
tcp_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
3109 Chardev
*chr
= CHARDEV(opaque
);
3110 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
3111 uint8_t buf
[READ_BUF_LEN
];
3114 if (!s
->connected
|| s
->max_size
<= 0) {
3118 if (len
> s
->max_size
)
3120 size
= tcp_chr_recv(chr
, (void *)buf
, len
);
3121 if (size
== 0 || size
== -1) {
3122 /* connection closed */
3123 tcp_chr_disconnect(chr
);
3124 } else if (size
> 0) {
3125 if (s
->do_telnetopt
)
3126 tcp_chr_process_IAC_bytes(chr
, s
, buf
, &size
);
3128 qemu_chr_be_write(chr
, buf
, size
);
3134 static int tcp_chr_sync_read(Chardev
*chr
, const uint8_t *buf
, int len
)
3136 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3139 if (!s
->connected
) {
3143 size
= tcp_chr_recv(chr
, (void *) buf
, len
);
3145 /* connection closed */
3146 tcp_chr_disconnect(chr
);
3152 static void tcp_chr_connect(void *opaque
)
3154 Chardev
*chr
= CHARDEV(opaque
);
3155 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
3157 g_free(chr
->filename
);
3158 chr
->filename
= sockaddr_to_str(
3159 &s
->sioc
->localAddr
, s
->sioc
->localAddrLen
,
3160 &s
->sioc
->remoteAddr
, s
->sioc
->remoteAddrLen
,
3161 s
->is_listen
, s
->is_telnet
);
3165 chr
->fd_in_tag
= io_add_watch_poll(chr
, s
->ioc
,
3170 qemu_chr_be_generic_open(chr
);
3173 static void tcp_chr_update_read_handler(Chardev
*chr
,
3174 GMainContext
*context
)
3176 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3178 if (!s
->connected
) {
3182 remove_fd_in_watch(chr
);
3184 chr
->fd_in_tag
= io_add_watch_poll(chr
, s
->ioc
,
3195 } TCPCharDriverTelnetInit
;
3197 static gboolean
tcp_chr_telnet_init_io(QIOChannel
*ioc
,
3198 GIOCondition cond G_GNUC_UNUSED
,
3201 TCPCharDriverTelnetInit
*init
= user_data
;
3204 ret
= qio_channel_write(ioc
, init
->buf
, init
->buflen
, NULL
);
3206 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
3209 tcp_chr_disconnect(init
->chr
);
3213 init
->buflen
-= ret
;
3215 if (init
->buflen
== 0) {
3216 tcp_chr_connect(init
->chr
);
3220 memmove(init
->buf
, init
->buf
+ ret
, init
->buflen
);
3225 static void tcp_chr_telnet_init(Chardev
*chr
)
3227 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3228 TCPCharDriverTelnetInit
*init
=
3229 g_new0(TCPCharDriverTelnetInit
, 1);
3235 #define IACSET(x, a, b, c) \
3242 /* Prep the telnet negotion to put telnet in binary,
3243 * no echo, single char mode */
3244 IACSET(init
->buf
, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3245 IACSET(init
->buf
, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3246 IACSET(init
->buf
, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3247 IACSET(init
->buf
, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3251 qio_channel_add_watch(
3253 tcp_chr_telnet_init_io
,
3258 static void tcp_chr_tls_handshake(QIOTask
*task
,
3261 Chardev
*chr
= user_data
;
3262 SocketChardev
*s
= user_data
;
3264 if (qio_task_propagate_error(task
, NULL
)) {
3265 tcp_chr_disconnect(chr
);
3267 if (s
->do_telnetopt
) {
3268 tcp_chr_telnet_init(chr
);
3270 tcp_chr_connect(chr
);
3276 static void tcp_chr_tls_init(Chardev
*chr
)
3278 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3279 QIOChannelTLS
*tioc
;
3284 tioc
= qio_channel_tls_new_server(
3285 s
->ioc
, s
->tls_creds
,
3286 NULL
, /* XXX Use an ACL */
3289 tioc
= qio_channel_tls_new_client(
3290 s
->ioc
, s
->tls_creds
,
3291 s
->addr
->u
.inet
.data
->host
,
3296 tcp_chr_disconnect(chr
);
3299 name
= g_strdup_printf("chardev-tls-%s-%s",
3300 s
->is_listen
? "server" : "client",
3302 qio_channel_set_name(QIO_CHANNEL(tioc
), name
);
3304 object_unref(OBJECT(s
->ioc
));
3305 s
->ioc
= QIO_CHANNEL(tioc
);
3307 qio_channel_tls_handshake(tioc
,
3308 tcp_chr_tls_handshake
,
3314 static void tcp_chr_set_client_ioc_name(Chardev
*chr
,
3315 QIOChannelSocket
*sioc
)
3317 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3319 name
= g_strdup_printf("chardev-tcp-%s-%s",
3320 s
->is_listen
? "server" : "client",
3322 qio_channel_set_name(QIO_CHANNEL(sioc
), name
);
3327 static int tcp_chr_new_client(Chardev
*chr
, QIOChannelSocket
*sioc
)
3329 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3331 if (s
->ioc
!= NULL
) {
3335 s
->ioc
= QIO_CHANNEL(sioc
);
3336 object_ref(OBJECT(sioc
));
3338 object_ref(OBJECT(sioc
));
3340 qio_channel_set_blocking(s
->ioc
, false, NULL
);
3342 if (s
->do_nodelay
) {
3343 qio_channel_set_delay(s
->ioc
, false);
3345 if (s
->listen_tag
) {
3346 g_source_remove(s
->listen_tag
);
3351 tcp_chr_tls_init(chr
);
3353 if (s
->do_telnetopt
) {
3354 tcp_chr_telnet_init(chr
);
3356 tcp_chr_connect(chr
);
3364 static int tcp_chr_add_client(Chardev
*chr
, int fd
)
3367 QIOChannelSocket
*sioc
;
3369 sioc
= qio_channel_socket_new_fd(fd
, NULL
);
3373 tcp_chr_set_client_ioc_name(chr
, sioc
);
3374 ret
= tcp_chr_new_client(chr
, sioc
);
3375 object_unref(OBJECT(sioc
));
3379 static gboolean
tcp_chr_accept(QIOChannel
*channel
,
3383 Chardev
*chr
= CHARDEV(opaque
);
3384 QIOChannelSocket
*sioc
;
3386 sioc
= qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel
),
3392 tcp_chr_new_client(chr
, sioc
);
3394 object_unref(OBJECT(sioc
));
3399 static int tcp_chr_wait_connected(Chardev
*chr
, Error
**errp
)
3401 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3402 QIOChannelSocket
*sioc
;
3404 /* It can't wait on s->connected, since it is set asynchronously
3405 * in TLS and telnet cases, only wait for an accepted socket */
3408 error_report("QEMU waiting for connection on: %s",
3410 qio_channel_set_blocking(QIO_CHANNEL(s
->listen_ioc
), true, NULL
);
3411 tcp_chr_accept(QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
, chr
);
3412 qio_channel_set_blocking(QIO_CHANNEL(s
->listen_ioc
), false, NULL
);
3414 sioc
= qio_channel_socket_new();
3415 tcp_chr_set_client_ioc_name(chr
, sioc
);
3416 if (qio_channel_socket_connect_sync(sioc
, s
->addr
, errp
) < 0) {
3417 object_unref(OBJECT(sioc
));
3420 tcp_chr_new_client(chr
, sioc
);
3421 object_unref(OBJECT(sioc
));
3428 static int qemu_chr_wait_connected(Chardev
*chr
, Error
**errp
)
3430 ChardevClass
*cc
= CHARDEV_GET_CLASS(chr
);
3432 if (cc
->chr_wait_connected
) {
3433 return cc
->chr_wait_connected(chr
, errp
);
3439 int qemu_chr_fe_wait_connected(CharBackend
*be
, Error
**errp
)
3442 error_setg(errp
, "missing associated backend");
3446 return qemu_chr_wait_connected(be
->chr
, errp
);
3449 static void tcp_chr_free(Chardev
*chr
)
3451 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3453 tcp_chr_free_connection(chr
);
3455 if (s
->reconnect_timer
) {
3456 g_source_remove(s
->reconnect_timer
);
3457 s
->reconnect_timer
= 0;
3459 qapi_free_SocketAddress(s
->addr
);
3460 if (s
->listen_tag
) {
3461 g_source_remove(s
->listen_tag
);
3464 if (s
->listen_ioc
) {
3465 object_unref(OBJECT(s
->listen_ioc
));
3468 object_unref(OBJECT(s
->tls_creds
));
3471 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
3475 static void qemu_chr_socket_connected(QIOTask
*task
, void *opaque
)
3477 QIOChannelSocket
*sioc
= QIO_CHANNEL_SOCKET(qio_task_get_source(task
));
3478 Chardev
*chr
= CHARDEV(opaque
);
3479 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
3482 if (qio_task_propagate_error(task
, &err
)) {
3483 check_report_connect_error(chr
, err
);
3488 s
->connect_err_reported
= false;
3489 tcp_chr_new_client(chr
, sioc
);
3492 object_unref(OBJECT(sioc
));
3496 /*********************************************************/
3497 /* Ring buffer chardev */
3507 #define RINGBUF_CHARDEV(obj) \
3508 OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
3510 static size_t ringbuf_count(const Chardev
*chr
)
3512 const RingBufChardev
*d
= RINGBUF_CHARDEV(chr
);
3514 return d
->prod
- d
->cons
;
3517 /* Called with chr_write_lock held. */
3518 static int ringbuf_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
3520 RingBufChardev
*d
= RINGBUF_CHARDEV(chr
);
3523 if (!buf
|| (len
< 0)) {
3527 for (i
= 0; i
< len
; i
++ ) {
3528 d
->cbuf
[d
->prod
++ & (d
->size
- 1)] = buf
[i
];
3529 if (d
->prod
- d
->cons
> d
->size
) {
3530 d
->cons
= d
->prod
- d
->size
;
3537 static int ringbuf_chr_read(Chardev
*chr
, uint8_t *buf
, int len
)
3539 RingBufChardev
*d
= RINGBUF_CHARDEV(chr
);
3542 qemu_mutex_lock(&chr
->chr_write_lock
);
3543 for (i
= 0; i
< len
&& d
->cons
!= d
->prod
; i
++) {
3544 buf
[i
] = d
->cbuf
[d
->cons
++ & (d
->size
- 1)];
3546 qemu_mutex_unlock(&chr
->chr_write_lock
);
3551 static void ringbuf_chr_free(struct Chardev
*chr
)
3553 RingBufChardev
*d
= RINGBUF_CHARDEV(chr
);
3558 static void qemu_chr_open_ringbuf(Chardev
*chr
,
3559 ChardevBackend
*backend
,
3563 ChardevRingbuf
*opts
= backend
->u
.ringbuf
.data
;
3564 RingBufChardev
*d
= RINGBUF_CHARDEV(chr
);
3566 d
->size
= opts
->has_size
? opts
->size
: 65536;
3568 /* The size must be power of 2 */
3569 if (d
->size
& (d
->size
- 1)) {
3570 error_setg(errp
, "size of ringbuf chardev must be power of two");
3576 d
->cbuf
= g_malloc0(d
->size
);
3579 void qmp_ringbuf_write(const char *device
, const char *data
,
3580 bool has_format
, enum DataFormat format
,
3584 const uint8_t *write_data
;
3588 chr
= qemu_chr_find(device
);
3590 error_setg(errp
, "Device '%s' not found", device
);
3594 if (!CHARDEV_IS_RINGBUF(chr
)) {
3595 error_setg(errp
,"%s is not a ringbuf device", device
);
3599 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3600 write_data
= qbase64_decode(data
, -1,
3607 write_data
= (uint8_t *)data
;
3608 write_count
= strlen(data
);
3611 ret
= ringbuf_chr_write(chr
, write_data
, write_count
);
3613 if (write_data
!= (uint8_t *)data
) {
3614 g_free((void *)write_data
);
3618 error_setg(errp
, "Failed to write to device %s", device
);
3623 char *qmp_ringbuf_read(const char *device
, int64_t size
,
3624 bool has_format
, enum DataFormat format
,
3632 chr
= qemu_chr_find(device
);
3634 error_setg(errp
, "Device '%s' not found", device
);
3638 if (!CHARDEV_IS_RINGBUF(chr
)) {
3639 error_setg(errp
,"%s is not a ringbuf device", device
);
3644 error_setg(errp
, "size must be greater than zero");
3648 count
= ringbuf_count(chr
);
3649 size
= size
> count
? count
: size
;
3650 read_data
= g_malloc(size
+ 1);
3652 ringbuf_chr_read(chr
, read_data
, size
);
3654 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3655 data
= g_base64_encode(read_data
, size
);
3659 * FIXME should read only complete, valid UTF-8 characters up
3660 * to @size bytes. Invalid sequences should be replaced by a
3661 * suitable replacement character. Except when (and only
3662 * when) ring buffer lost characters since last read, initial
3663 * continuation characters should be dropped.
3665 read_data
[size
] = 0;
3666 data
= (char *)read_data
;
3672 QemuOpts
*qemu_chr_parse_compat(const char *label
, const char *filename
)
3674 char host
[65], port
[33], width
[8], height
[8];
3678 Error
*local_err
= NULL
;
3680 opts
= qemu_opts_create(qemu_find_opts("chardev"), label
, 1, &local_err
);
3682 error_report_err(local_err
);
3686 if (strstart(filename
, "mon:", &p
)) {
3688 qemu_opt_set(opts
, "mux", "on", &error_abort
);
3689 if (strcmp(filename
, "stdio") == 0) {
3690 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3691 * but pass it to the guest. Handle this only for compat syntax,
3692 * for -chardev syntax we have special option for this.
3693 * This is what -nographic did, redirecting+muxing serial+monitor
3694 * to stdio causing Ctrl+C to be passed to guest. */
3695 qemu_opt_set(opts
, "signal", "off", &error_abort
);
3699 if (strcmp(filename
, "null") == 0 ||
3700 strcmp(filename
, "pty") == 0 ||
3701 strcmp(filename
, "msmouse") == 0 ||
3702 strcmp(filename
, "braille") == 0 ||
3703 strcmp(filename
, "testdev") == 0 ||
3704 strcmp(filename
, "stdio") == 0) {
3705 qemu_opt_set(opts
, "backend", filename
, &error_abort
);
3708 if (strstart(filename
, "vc", &p
)) {
3709 qemu_opt_set(opts
, "backend", "vc", &error_abort
);
3711 if (sscanf(p
+1, "%7[0-9]x%7[0-9]", width
, height
) == 2) {
3713 qemu_opt_set(opts
, "width", width
, &error_abort
);
3714 qemu_opt_set(opts
, "height", height
, &error_abort
);
3715 } else if (sscanf(p
+1, "%7[0-9]Cx%7[0-9]C", width
, height
) == 2) {
3717 qemu_opt_set(opts
, "cols", width
, &error_abort
);
3718 qemu_opt_set(opts
, "rows", height
, &error_abort
);
3725 if (strcmp(filename
, "con:") == 0) {
3726 qemu_opt_set(opts
, "backend", "console", &error_abort
);
3729 if (strstart(filename
, "COM", NULL
)) {
3730 qemu_opt_set(opts
, "backend", "serial", &error_abort
);
3731 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3734 if (strstart(filename
, "file:", &p
)) {
3735 qemu_opt_set(opts
, "backend", "file", &error_abort
);
3736 qemu_opt_set(opts
, "path", p
, &error_abort
);
3739 if (strstart(filename
, "pipe:", &p
)) {
3740 qemu_opt_set(opts
, "backend", "pipe", &error_abort
);
3741 qemu_opt_set(opts
, "path", p
, &error_abort
);
3744 if (strstart(filename
, "tcp:", &p
) ||
3745 strstart(filename
, "telnet:", &p
)) {
3746 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3748 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1)
3751 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3752 qemu_opt_set(opts
, "host", host
, &error_abort
);
3753 qemu_opt_set(opts
, "port", port
, &error_abort
);
3754 if (p
[pos
] == ',') {
3755 qemu_opts_do_parse(opts
, p
+pos
+1, NULL
, &local_err
);
3757 error_report_err(local_err
);
3761 if (strstart(filename
, "telnet:", &p
))
3762 qemu_opt_set(opts
, "telnet", "on", &error_abort
);
3765 if (strstart(filename
, "udp:", &p
)) {
3766 qemu_opt_set(opts
, "backend", "udp", &error_abort
);
3767 if (sscanf(p
, "%64[^:]:%32[^@,]%n", host
, port
, &pos
) < 2) {
3769 if (sscanf(p
, ":%32[^@,]%n", port
, &pos
) < 1) {
3773 qemu_opt_set(opts
, "host", host
, &error_abort
);
3774 qemu_opt_set(opts
, "port", port
, &error_abort
);
3775 if (p
[pos
] == '@') {
3777 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3779 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1) {
3783 qemu_opt_set(opts
, "localaddr", host
, &error_abort
);
3784 qemu_opt_set(opts
, "localport", port
, &error_abort
);
3788 if (strstart(filename
, "unix:", &p
)) {
3789 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3790 qemu_opts_do_parse(opts
, p
, "path", &local_err
);
3792 error_report_err(local_err
);
3797 if (strstart(filename
, "/dev/parport", NULL
) ||
3798 strstart(filename
, "/dev/ppi", NULL
)) {
3799 qemu_opt_set(opts
, "backend", "parport", &error_abort
);
3800 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3803 if (strstart(filename
, "/dev/", NULL
)) {
3804 qemu_opt_set(opts
, "backend", "tty", &error_abort
);
3805 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3810 qemu_opts_del(opts
);
3814 void qemu_chr_parse_common(QemuOpts
*opts
, ChardevCommon
*backend
)
3816 const char *logfile
= qemu_opt_get(opts
, "logfile");
3818 backend
->has_logfile
= logfile
!= NULL
;
3819 backend
->logfile
= logfile
? g_strdup(logfile
) : NULL
;
3821 backend
->has_logappend
= true;
3822 backend
->logappend
= qemu_opt_get_bool(opts
, "logappend", false);
3826 static void qemu_chr_parse_file_out(QemuOpts
*opts
, ChardevBackend
*backend
,
3829 const char *path
= qemu_opt_get(opts
, "path");
3833 error_setg(errp
, "chardev: file: no filename given");
3836 file
= backend
->u
.file
.data
= g_new0(ChardevFile
, 1);
3837 qemu_chr_parse_common(opts
, qapi_ChardevFile_base(file
));
3838 file
->out
= g_strdup(path
);
3840 file
->has_append
= true;
3841 file
->append
= qemu_opt_get_bool(opts
, "append", false);
3844 static void qemu_chr_parse_stdio(QemuOpts
*opts
, ChardevBackend
*backend
,
3847 ChardevStdio
*stdio
;
3849 stdio
= backend
->u
.stdio
.data
= g_new0(ChardevStdio
, 1);
3850 qemu_chr_parse_common(opts
, qapi_ChardevStdio_base(stdio
));
3851 stdio
->has_signal
= true;
3852 stdio
->signal
= qemu_opt_get_bool(opts
, "signal", true);
3855 static const CharDriver stdio_driver
= {
3856 .kind
= CHARDEV_BACKEND_KIND_STDIO
,
3857 .parse
= qemu_chr_parse_stdio
,
3860 static void char_stdio_class_init(ObjectClass
*oc
, void *data
)
3862 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
3864 cc
->open
= qemu_chr_open_stdio
;
3866 cc
->chr_write
= win_stdio_write
;
3867 cc
->chr_set_echo
= qemu_chr_set_echo_win_stdio
;
3868 cc
->chr_free
= win_stdio_free
;
3870 cc
->chr_set_echo
= qemu_chr_set_echo_stdio
;
3871 cc
->chr_free
= qemu_chr_free_stdio
;
3875 static const TypeInfo char_stdio_type_info
= {
3876 .name
= TYPE_CHARDEV_STDIO
,
3878 .parent
= TYPE_CHARDEV_WIN_STDIO
,
3880 .parent
= TYPE_CHARDEV_FD
,
3882 .class_init
= char_stdio_class_init
,
3885 #ifdef HAVE_CHARDEV_SERIAL
3886 static void qemu_chr_parse_serial(QemuOpts
*opts
, ChardevBackend
*backend
,
3889 const char *device
= qemu_opt_get(opts
, "path");
3890 ChardevHostdev
*serial
;
3892 if (device
== NULL
) {
3893 error_setg(errp
, "chardev: serial/tty: no device path given");
3896 serial
= backend
->u
.serial
.data
= g_new0(ChardevHostdev
, 1);
3897 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(serial
));
3898 serial
->device
= g_strdup(device
);
3902 #ifdef HAVE_CHARDEV_PARPORT
3903 static void qemu_chr_parse_parallel(QemuOpts
*opts
, ChardevBackend
*backend
,
3906 const char *device
= qemu_opt_get(opts
, "path");
3907 ChardevHostdev
*parallel
;
3909 if (device
== NULL
) {
3910 error_setg(errp
, "chardev: parallel: no device path given");
3913 parallel
= backend
->u
.parallel
.data
= g_new0(ChardevHostdev
, 1);
3914 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(parallel
));
3915 parallel
->device
= g_strdup(device
);
3919 static void qemu_chr_parse_pipe(QemuOpts
*opts
, ChardevBackend
*backend
,
3922 const char *device
= qemu_opt_get(opts
, "path");
3923 ChardevHostdev
*dev
;
3925 if (device
== NULL
) {
3926 error_setg(errp
, "chardev: pipe: no device path given");
3929 dev
= backend
->u
.pipe
.data
= g_new0(ChardevHostdev
, 1);
3930 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(dev
));
3931 dev
->device
= g_strdup(device
);
3934 static const CharDriver pipe_driver
= {
3935 .kind
= CHARDEV_BACKEND_KIND_PIPE
,
3936 .parse
= qemu_chr_parse_pipe
,
3939 static void char_pipe_class_init(ObjectClass
*oc
, void *data
)
3941 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
3943 cc
->open
= qemu_chr_open_pipe
;
3946 static const TypeInfo char_pipe_type_info
= {
3947 .name
= TYPE_CHARDEV_PIPE
,
3949 .parent
= TYPE_CHARDEV_WIN
,
3951 .parent
= TYPE_CHARDEV_FD
,
3953 .class_init
= char_pipe_class_init
,
3956 static void qemu_chr_parse_ringbuf(QemuOpts
*opts
, ChardevBackend
*backend
,
3960 ChardevRingbuf
*ringbuf
;
3962 ringbuf
= backend
->u
.ringbuf
.data
= g_new0(ChardevRingbuf
, 1);
3963 qemu_chr_parse_common(opts
, qapi_ChardevRingbuf_base(ringbuf
));
3965 val
= qemu_opt_get_size(opts
, "size", 0);
3967 ringbuf
->has_size
= true;
3968 ringbuf
->size
= val
;
3972 static const CharDriver ringbuf_driver
= {
3973 .kind
= CHARDEV_BACKEND_KIND_RINGBUF
,
3974 .parse
= qemu_chr_parse_ringbuf
,
3977 static void char_ringbuf_class_init(ObjectClass
*oc
, void *data
)
3979 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
3981 cc
->open
= qemu_chr_open_ringbuf
;
3982 cc
->chr_write
= ringbuf_chr_write
;
3983 cc
->chr_free
= ringbuf_chr_free
;
3986 static const TypeInfo char_ringbuf_type_info
= {
3987 .name
= TYPE_CHARDEV_RINGBUF
,
3988 .parent
= TYPE_CHARDEV
,
3989 .class_init
= char_ringbuf_class_init
,
3990 .instance_size
= sizeof(RingBufChardev
),
3993 /* Bug-compatibility: */
3994 static const CharDriver memory_driver
= {
3995 .kind
= CHARDEV_BACKEND_KIND_MEMORY
,
3996 .parse
= qemu_chr_parse_ringbuf
,
3999 static const TypeInfo char_memory_type_info
= {
4000 .name
= TYPE_CHARDEV_MEMORY
,
4001 .parent
= TYPE_CHARDEV_RINGBUF
,
4004 static void qemu_chr_parse_mux(QemuOpts
*opts
, ChardevBackend
*backend
,
4007 const char *chardev
= qemu_opt_get(opts
, "chardev");
4010 if (chardev
== NULL
) {
4011 error_setg(errp
, "chardev: mux: no chardev given");
4014 mux
= backend
->u
.mux
.data
= g_new0(ChardevMux
, 1);
4015 qemu_chr_parse_common(opts
, qapi_ChardevMux_base(mux
));
4016 mux
->chardev
= g_strdup(chardev
);
4019 static const CharDriver mux_driver
= {
4020 .kind
= CHARDEV_BACKEND_KIND_MUX
,
4021 .parse
= qemu_chr_parse_mux
,
4024 static void char_mux_class_init(ObjectClass
*oc
, void *data
)
4026 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4028 cc
->open
= qemu_chr_open_mux
;
4029 cc
->chr_write
= mux_chr_write
;
4030 cc
->chr_accept_input
= mux_chr_accept_input
;
4031 cc
->chr_add_watch
= mux_chr_add_watch
;
4034 static const TypeInfo char_mux_type_info
= {
4035 .name
= TYPE_CHARDEV_MUX
,
4036 .parent
= TYPE_CHARDEV
,
4037 .class_init
= char_mux_class_init
,
4038 .instance_size
= sizeof(MuxChardev
),
4039 .instance_finalize
= char_mux_finalize
,
4042 static void qemu_chr_parse_socket(QemuOpts
*opts
, ChardevBackend
*backend
,
4045 bool is_listen
= qemu_opt_get_bool(opts
, "server", false);
4046 bool is_waitconnect
= is_listen
&& qemu_opt_get_bool(opts
, "wait", true);
4047 bool is_telnet
= qemu_opt_get_bool(opts
, "telnet", false);
4048 bool do_nodelay
= !qemu_opt_get_bool(opts
, "delay", true);
4049 int64_t reconnect
= qemu_opt_get_number(opts
, "reconnect", 0);
4050 const char *path
= qemu_opt_get(opts
, "path");
4051 const char *host
= qemu_opt_get(opts
, "host");
4052 const char *port
= qemu_opt_get(opts
, "port");
4053 const char *tls_creds
= qemu_opt_get(opts
, "tls-creds");
4054 SocketAddress
*addr
;
4055 ChardevSocket
*sock
;
4059 error_setg(errp
, "chardev: socket: no host given");
4063 error_setg(errp
, "chardev: socket: no port given");
4068 error_setg(errp
, "TLS can only be used over TCP socket");
4073 sock
= backend
->u
.socket
.data
= g_new0(ChardevSocket
, 1);
4074 qemu_chr_parse_common(opts
, qapi_ChardevSocket_base(sock
));
4076 sock
->has_nodelay
= true;
4077 sock
->nodelay
= do_nodelay
;
4078 sock
->has_server
= true;
4079 sock
->server
= is_listen
;
4080 sock
->has_telnet
= true;
4081 sock
->telnet
= is_telnet
;
4082 sock
->has_wait
= true;
4083 sock
->wait
= is_waitconnect
;
4084 sock
->has_reconnect
= true;
4085 sock
->reconnect
= reconnect
;
4086 sock
->tls_creds
= g_strdup(tls_creds
);
4088 addr
= g_new0(SocketAddress
, 1);
4090 UnixSocketAddress
*q_unix
;
4091 addr
->type
= SOCKET_ADDRESS_KIND_UNIX
;
4092 q_unix
= addr
->u
.q_unix
.data
= g_new0(UnixSocketAddress
, 1);
4093 q_unix
->path
= g_strdup(path
);
4095 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
4096 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
4097 *addr
->u
.inet
.data
= (InetSocketAddress
) {
4098 .host
= g_strdup(host
),
4099 .port
= g_strdup(port
),
4100 .has_to
= qemu_opt_get(opts
, "to"),
4101 .to
= qemu_opt_get_number(opts
, "to", 0),
4102 .has_ipv4
= qemu_opt_get(opts
, "ipv4"),
4103 .ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0),
4104 .has_ipv6
= qemu_opt_get(opts
, "ipv6"),
4105 .ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0),
4111 static void qemu_chr_parse_udp(QemuOpts
*opts
, ChardevBackend
*backend
,
4114 const char *host
= qemu_opt_get(opts
, "host");
4115 const char *port
= qemu_opt_get(opts
, "port");
4116 const char *localaddr
= qemu_opt_get(opts
, "localaddr");
4117 const char *localport
= qemu_opt_get(opts
, "localport");
4118 bool has_local
= false;
4119 SocketAddress
*addr
;
4122 if (host
== NULL
|| strlen(host
) == 0) {
4125 if (port
== NULL
|| strlen(port
) == 0) {
4126 error_setg(errp
, "chardev: udp: remote port not specified");
4129 if (localport
== NULL
|| strlen(localport
) == 0) {
4134 if (localaddr
== NULL
|| strlen(localaddr
) == 0) {
4140 udp
= backend
->u
.udp
.data
= g_new0(ChardevUdp
, 1);
4141 qemu_chr_parse_common(opts
, qapi_ChardevUdp_base(udp
));
4143 addr
= g_new0(SocketAddress
, 1);
4144 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
4145 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
4146 *addr
->u
.inet
.data
= (InetSocketAddress
) {
4147 .host
= g_strdup(host
),
4148 .port
= g_strdup(port
),
4149 .has_ipv4
= qemu_opt_get(opts
, "ipv4"),
4150 .ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0),
4151 .has_ipv6
= qemu_opt_get(opts
, "ipv6"),
4152 .ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0),
4157 udp
->has_local
= true;
4158 addr
= g_new0(SocketAddress
, 1);
4159 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
4160 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
4161 *addr
->u
.inet
.data
= (InetSocketAddress
) {
4162 .host
= g_strdup(localaddr
),
4163 .port
= g_strdup(localport
),
4169 static const CharDriver
*backends
[CHARDEV_BACKEND_KIND__MAX
];
4171 void register_char_driver(const CharDriver
*driver
)
4173 backends
[driver
->kind
] = driver
;
4176 Chardev
*qemu_chr_new_from_opts(QemuOpts
*opts
,
4179 Error
*local_err
= NULL
;
4180 const CharDriver
*cd
= NULL
;
4183 ChardevReturn
*ret
= NULL
;
4184 ChardevBackend
*backend
;
4185 const char *name
= qemu_opt_get(opts
, "backend");
4186 const char *id
= qemu_opts_id(opts
);
4190 error_setg(errp
, "chardev: \"%s\" missing backend",
4191 qemu_opts_id(opts
));
4195 if (is_help_option(name
)) {
4196 GString
*str
= g_string_new("");
4197 for (i
= 0; i
< ARRAY_SIZE(backends
); i
++) {
4200 g_string_append_printf(str
, "\n%s", ChardevBackendKind_lookup
[cd
->kind
]);
4202 g_string_append_printf(str
, "\n%s", cd
->alias
);
4207 error_report("Available chardev backend types: %s", str
->str
);
4208 g_string_free(str
, true);
4213 error_setg(errp
, "chardev: no id specified");
4217 for (i
= 0; i
< ARRAY_SIZE(backends
); i
++) {
4222 if (g_strcmp0(ChardevBackendKind_lookup
[cd
->kind
], name
) == 0 ||
4223 g_strcmp0(cd
->alias
, name
) == 0) {
4227 if (i
== ARRAY_SIZE(backends
)) {
4228 error_setg(errp
, "chardev: backend \"%s\" not found", name
);
4232 backend
= g_new0(ChardevBackend
, 1);
4234 if (qemu_opt_get_bool(opts
, "mux", 0)) {
4235 bid
= g_strdup_printf("%s-base", id
);
4239 backend
->type
= cd
->kind
;
4241 cd
->parse(opts
, backend
, &local_err
);
4243 error_propagate(errp
, local_err
);
4247 ChardevCommon
*cc
= g_new0(ChardevCommon
, 1);
4248 qemu_chr_parse_common(opts
, cc
);
4249 backend
->u
.null
.data
= cc
; /* Any ChardevCommon member would work */
4252 ret
= qmp_chardev_add(bid
? bid
: id
, backend
, errp
);
4258 qapi_free_ChardevBackend(backend
);
4259 qapi_free_ChardevReturn(ret
);
4260 backend
= g_new0(ChardevBackend
, 1);
4261 backend
->u
.mux
.data
= g_new0(ChardevMux
, 1);
4262 backend
->type
= CHARDEV_BACKEND_KIND_MUX
;
4263 backend
->u
.mux
.data
->chardev
= g_strdup(bid
);
4264 ret
= qmp_chardev_add(id
, backend
, errp
);
4266 chr
= qemu_chr_find(bid
);
4267 qemu_chr_delete(chr
);
4273 chr
= qemu_chr_find(id
);
4276 qapi_free_ChardevBackend(backend
);
4277 qapi_free_ChardevReturn(ret
);
4285 Chardev
*qemu_chr_new_noreplay(const char *label
, const char *filename
)
4292 if (strstart(filename
, "chardev:", &p
)) {
4293 return qemu_chr_find(p
);
4296 opts
= qemu_chr_parse_compat(label
, filename
);
4300 chr
= qemu_chr_new_from_opts(opts
, &err
);
4302 error_report_err(err
);
4304 if (chr
&& qemu_opt_get_bool(opts
, "mux", 0)) {
4305 monitor_init(chr
, MONITOR_USE_READLINE
);
4307 qemu_opts_del(opts
);
4311 Chardev
*qemu_chr_new(const char *label
, const char *filename
)
4314 chr
= qemu_chr_new_noreplay(label
, filename
);
4316 if (replay_mode
!= REPLAY_MODE_NONE
) {
4317 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_REPLAY
);
4319 if (qemu_chr_replay(chr
) && CHARDEV_GET_CLASS(chr
)->chr_ioctl
) {
4320 error_report("Replay: ioctl is not supported "
4321 "for serial devices yet");
4323 replay_register_char_driver(chr
);
4328 void qemu_chr_fe_set_echo(CharBackend
*be
, bool echo
)
4330 Chardev
*chr
= be
->chr
;
4332 if (chr
&& CHARDEV_GET_CLASS(chr
)->chr_set_echo
) {
4333 CHARDEV_GET_CLASS(chr
)->chr_set_echo(chr
, echo
);
4337 void qemu_chr_fe_set_open(CharBackend
*be
, int fe_open
)
4339 Chardev
*chr
= be
->chr
;
4345 if (be
->fe_open
== fe_open
) {
4348 be
->fe_open
= fe_open
;
4349 if (CHARDEV_GET_CLASS(chr
)->chr_set_fe_open
) {
4350 CHARDEV_GET_CLASS(chr
)->chr_set_fe_open(chr
, fe_open
);
4354 guint
qemu_chr_fe_add_watch(CharBackend
*be
, GIOCondition cond
,
4355 GIOFunc func
, void *user_data
)
4357 Chardev
*s
= be
->chr
;
4361 if (!s
|| CHARDEV_GET_CLASS(s
)->chr_add_watch
== NULL
) {
4365 src
= CHARDEV_GET_CLASS(s
)->chr_add_watch(s
, cond
);
4370 g_source_set_callback(src
, (GSourceFunc
)func
, user_data
, NULL
);
4371 tag
= g_source_attach(src
, NULL
);
4372 g_source_unref(src
);
4377 void qemu_chr_fe_disconnect(CharBackend
*be
)
4379 Chardev
*chr
= be
->chr
;
4381 if (chr
&& CHARDEV_GET_CLASS(chr
)->chr_disconnect
) {
4382 CHARDEV_GET_CLASS(chr
)->chr_disconnect(chr
);
4386 void qemu_chr_free(Chardev
*chr
)
4388 if (CHARDEV_GET_CLASS(chr
)->chr_free
) {
4389 CHARDEV_GET_CLASS(chr
)->chr_free(chr
);
4391 object_unref(OBJECT(chr
));
4394 void qemu_chr_delete(Chardev
*chr
)
4396 QTAILQ_REMOVE(&chardevs
, chr
, next
);
4400 ChardevInfoList
*qmp_query_chardev(Error
**errp
)
4402 ChardevInfoList
*chr_list
= NULL
;
4405 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
4406 ChardevInfoList
*info
= g_malloc0(sizeof(*info
));
4407 info
->value
= g_malloc0(sizeof(*info
->value
));
4408 info
->value
->label
= g_strdup(chr
->label
);
4409 info
->value
->filename
= g_strdup(chr
->filename
);
4410 info
->value
->frontend_open
= chr
->be
&& chr
->be
->fe_open
;
4412 info
->next
= chr_list
;
4419 static ChardevBackendInfoList
*
4420 qmp_prepend_backend(ChardevBackendInfoList
*list
, const char *name
)
4422 ChardevBackendInfoList
*info
= g_malloc0(sizeof(*info
));
4423 info
->value
= g_malloc0(sizeof(*info
->value
));
4424 info
->value
->name
= g_strdup(name
);
4429 ChardevBackendInfoList
*qmp_query_chardev_backends(Error
**errp
)
4431 ChardevBackendInfoList
*backend_list
= NULL
;
4432 const CharDriver
*c
;
4435 for (i
= 0; i
< ARRAY_SIZE(backends
); i
++) {
4441 backend_list
= qmp_prepend_backend(backend_list
,
4442 ChardevBackendKind_lookup
[c
->kind
]);
4444 backend_list
= qmp_prepend_backend(backend_list
, c
->alias
);
4448 return backend_list
;
4451 Chardev
*qemu_chr_find(const char *name
)
4455 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
4456 if (strcmp(chr
->label
, name
) != 0)
4463 QemuOptsList qemu_chardev_opts
= {
4465 .implied_opt_name
= "backend",
4466 .head
= QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts
.head
),
4470 .type
= QEMU_OPT_STRING
,
4473 .type
= QEMU_OPT_STRING
,
4476 .type
= QEMU_OPT_STRING
,
4479 .type
= QEMU_OPT_STRING
,
4481 .name
= "localaddr",
4482 .type
= QEMU_OPT_STRING
,
4484 .name
= "localport",
4485 .type
= QEMU_OPT_STRING
,
4488 .type
= QEMU_OPT_NUMBER
,
4491 .type
= QEMU_OPT_BOOL
,
4494 .type
= QEMU_OPT_BOOL
,
4497 .type
= QEMU_OPT_BOOL
,
4500 .type
= QEMU_OPT_BOOL
,
4503 .type
= QEMU_OPT_BOOL
,
4505 .name
= "reconnect",
4506 .type
= QEMU_OPT_NUMBER
,
4509 .type
= QEMU_OPT_BOOL
,
4511 .name
= "tls-creds",
4512 .type
= QEMU_OPT_STRING
,
4515 .type
= QEMU_OPT_NUMBER
,
4518 .type
= QEMU_OPT_NUMBER
,
4521 .type
= QEMU_OPT_NUMBER
,
4524 .type
= QEMU_OPT_NUMBER
,
4527 .type
= QEMU_OPT_BOOL
,
4530 .type
= QEMU_OPT_BOOL
,
4533 .type
= QEMU_OPT_STRING
,
4536 .type
= QEMU_OPT_NUMBER
,
4539 .type
= QEMU_OPT_SIZE
,
4542 .type
= QEMU_OPT_STRING
,
4545 .type
= QEMU_OPT_BOOL
,
4548 .type
= QEMU_OPT_STRING
,
4550 .name
= "logappend",
4551 .type
= QEMU_OPT_BOOL
,
4553 { /* end of list */ }
4559 static void qmp_chardev_open_file(Chardev
*chr
,
4560 ChardevBackend
*backend
,
4564 ChardevFile
*file
= backend
->u
.file
.data
;
4570 error_setg(errp
, "input file not supported");
4574 if (file
->has_append
&& file
->append
) {
4575 /* Append to file if it already exists. */
4576 accessmode
= FILE_GENERIC_WRITE
& ~FILE_WRITE_DATA
;
4577 flags
= OPEN_ALWAYS
;
4579 /* Truncate file if it already exists. */
4580 accessmode
= GENERIC_WRITE
;
4581 flags
= CREATE_ALWAYS
;
4584 out
= CreateFile(file
->out
, accessmode
, FILE_SHARE_READ
, NULL
, flags
,
4585 FILE_ATTRIBUTE_NORMAL
, NULL
);
4586 if (out
== INVALID_HANDLE_VALUE
) {
4587 error_setg(errp
, "open %s failed", file
->out
);
4591 qemu_chr_open_win_file(chr
, out
);
4594 static void qmp_chardev_open_serial(Chardev
*chr
,
4595 ChardevBackend
*backend
,
4599 ChardevHostdev
*serial
= backend
->u
.serial
.data
;
4601 win_chr_init(chr
, serial
->device
, errp
);
4606 static int qmp_chardev_open_file_source(char *src
, int flags
,
4611 TFR(fd
= qemu_open(src
, flags
, 0666));
4613 error_setg_file_open(errp
, errno
, src
);
4618 static void qmp_chardev_open_file(Chardev
*chr
,
4619 ChardevBackend
*backend
,
4623 ChardevFile
*file
= backend
->u
.file
.data
;
4624 int flags
, in
= -1, out
;
4626 flags
= O_WRONLY
| O_CREAT
| O_BINARY
;
4627 if (file
->has_append
&& file
->append
) {
4633 out
= qmp_chardev_open_file_source(file
->out
, flags
, errp
);
4640 in
= qmp_chardev_open_file_source(file
->in
, flags
, errp
);
4647 qemu_chr_open_fd(chr
, in
, out
);
4650 #ifdef HAVE_CHARDEV_SERIAL
4651 static void qmp_chardev_open_serial(Chardev
*chr
,
4652 ChardevBackend
*backend
,
4656 ChardevHostdev
*serial
= backend
->u
.serial
.data
;
4659 fd
= qmp_chardev_open_file_source(serial
->device
, O_RDWR
, errp
);
4663 qemu_set_nonblock(fd
);
4664 tty_serial_init(fd
, 115200, 'N', 8, 1);
4666 qemu_chr_open_fd(chr
, fd
, fd
);
4670 #ifdef HAVE_CHARDEV_PARPORT
4671 static void qmp_chardev_open_parallel(Chardev
*chr
,
4672 ChardevBackend
*backend
,
4676 ChardevHostdev
*parallel
= backend
->u
.parallel
.data
;
4679 fd
= qmp_chardev_open_file_source(parallel
->device
, O_RDWR
, errp
);
4683 qemu_chr_open_pp_fd(chr
, fd
, be_opened
, errp
);
4686 static const CharDriver parallel_driver
= {
4687 .kind
= CHARDEV_BACKEND_KIND_PARALLEL
,
4689 .parse
= qemu_chr_parse_parallel
,
4692 static void char_parallel_class_init(ObjectClass
*oc
, void *data
)
4694 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4696 cc
->open
= qmp_chardev_open_parallel
;
4697 #if defined(__linux__)
4698 cc
->chr_write
= null_chr_write
;
4699 cc
->chr_ioctl
= pp_ioctl
;
4700 cc
->chr_free
= pp_free
;
4701 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
4702 /* FIXME: no chr_free */
4703 cc
->chr_write
= null_chr_write
;
4704 cc
->chr_ioctl
= pp_ioctl
;
4708 static const TypeInfo char_parallel_type_info
= {
4709 .name
= TYPE_CHARDEV_PARALLEL
,
4710 .parent
= TYPE_CHARDEV
,
4711 .instance_size
= sizeof(ParallelChardev
),
4712 .class_init
= char_parallel_class_init
,
4718 static const CharDriver file_driver
= {
4719 .kind
= CHARDEV_BACKEND_KIND_FILE
,
4720 .parse
= qemu_chr_parse_file_out
,
4723 static void char_file_class_init(ObjectClass
*oc
, void *data
)
4725 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4727 cc
->open
= qmp_chardev_open_file
;
4729 /* FIXME: no chr_free */
4730 cc
->chr_free
= NULL
;
4734 static const TypeInfo char_file_type_info
= {
4735 .name
= TYPE_CHARDEV_FILE
,
4737 .parent
= TYPE_CHARDEV_WIN
,
4739 .parent
= TYPE_CHARDEV_FD
,
4741 .class_init
= char_file_class_init
,
4744 #ifdef HAVE_CHARDEV_SERIAL
4746 static const CharDriver serial_driver
= {
4747 .kind
= CHARDEV_BACKEND_KIND_SERIAL
,
4749 .parse
= qemu_chr_parse_serial
,
4752 static void char_serial_class_init(ObjectClass
*oc
, void *data
)
4754 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4756 cc
->open
= qmp_chardev_open_serial
;
4758 cc
->chr_ioctl
= tty_serial_ioctl
;
4759 cc
->chr_free
= qemu_chr_free_tty
;
4763 static const TypeInfo char_serial_type_info
= {
4764 .name
= TYPE_CHARDEV_SERIAL
,
4766 .parent
= TYPE_CHARDEV_WIN
,
4768 .parent
= TYPE_CHARDEV_FD
,
4770 .class_init
= char_serial_class_init
,
4774 static gboolean
socket_reconnect_timeout(gpointer opaque
)
4776 Chardev
*chr
= CHARDEV(opaque
);
4777 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
4778 QIOChannelSocket
*sioc
;
4780 s
->reconnect_timer
= 0;
4786 sioc
= qio_channel_socket_new();
4787 tcp_chr_set_client_ioc_name(chr
, sioc
);
4788 qio_channel_socket_connect_async(sioc
, s
->addr
,
4789 qemu_chr_socket_connected
,
4795 static void qmp_chardev_open_socket(Chardev
*chr
,
4796 ChardevBackend
*backend
,
4800 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
4801 ChardevSocket
*sock
= backend
->u
.socket
.data
;
4802 SocketAddress
*addr
= sock
->addr
;
4803 bool do_nodelay
= sock
->has_nodelay
? sock
->nodelay
: false;
4804 bool is_listen
= sock
->has_server
? sock
->server
: true;
4805 bool is_telnet
= sock
->has_telnet
? sock
->telnet
: false;
4806 bool is_waitconnect
= sock
->has_wait
? sock
->wait
: false;
4807 int64_t reconnect
= sock
->has_reconnect
? sock
->reconnect
: 0;
4808 QIOChannelSocket
*sioc
= NULL
;
4810 s
->is_unix
= addr
->type
== SOCKET_ADDRESS_KIND_UNIX
;
4811 s
->is_listen
= is_listen
;
4812 s
->is_telnet
= is_telnet
;
4813 s
->do_nodelay
= do_nodelay
;
4814 if (sock
->tls_creds
) {
4816 creds
= object_resolve_path_component(
4817 object_get_objects_root(), sock
->tls_creds
);
4819 error_setg(errp
, "No TLS credentials with id '%s'",
4823 s
->tls_creds
= (QCryptoTLSCreds
*)
4824 object_dynamic_cast(creds
,
4825 TYPE_QCRYPTO_TLS_CREDS
);
4826 if (!s
->tls_creds
) {
4827 error_setg(errp
, "Object with id '%s' is not TLS credentials",
4831 object_ref(OBJECT(s
->tls_creds
));
4833 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_SERVER
) {
4834 error_setg(errp
, "%s",
4835 "Expected TLS credentials for server endpoint");
4839 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT
) {
4840 error_setg(errp
, "%s",
4841 "Expected TLS credentials for client endpoint");
4847 s
->addr
= QAPI_CLONE(SocketAddress
, sock
->addr
);
4849 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_RECONNECTABLE
);
4851 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_FD_PASS
);
4854 /* be isn't opened until we get a connection */
4857 chr
->filename
= SocketAddress_to_str("disconnected:",
4858 addr
, is_listen
, is_telnet
);
4862 s
->do_telnetopt
= 1;
4864 } else if (reconnect
> 0) {
4865 s
->reconnect_time
= reconnect
;
4868 if (s
->reconnect_time
) {
4869 sioc
= qio_channel_socket_new();
4870 tcp_chr_set_client_ioc_name(chr
, sioc
);
4871 qio_channel_socket_connect_async(sioc
, s
->addr
,
4872 qemu_chr_socket_connected
,
4877 sioc
= qio_channel_socket_new();
4879 name
= g_strdup_printf("chardev-tcp-listener-%s", chr
->label
);
4880 qio_channel_set_name(QIO_CHANNEL(sioc
), name
);
4883 if (qio_channel_socket_listen_sync(sioc
, s
->addr
, errp
) < 0) {
4886 s
->listen_ioc
= sioc
;
4887 if (is_waitconnect
&&
4888 qemu_chr_wait_connected(chr
, errp
) < 0) {
4892 s
->listen_tag
= qio_channel_add_watch(
4893 QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
,
4894 tcp_chr_accept
, chr
, NULL
);
4896 } else if (qemu_chr_wait_connected(chr
, errp
) < 0) {
4905 object_unref(OBJECT(sioc
));
4908 object_unref(OBJECT(s
->tls_creds
));
4912 static const CharDriver socket_driver
= {
4913 .kind
= CHARDEV_BACKEND_KIND_SOCKET
,
4914 .parse
= qemu_chr_parse_socket
,
4917 static void char_socket_class_init(ObjectClass
*oc
, void *data
)
4919 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4921 cc
->open
= qmp_chardev_open_socket
;
4922 cc
->chr_wait_connected
= tcp_chr_wait_connected
;
4923 cc
->chr_write
= tcp_chr_write
;
4924 cc
->chr_sync_read
= tcp_chr_sync_read
;
4925 cc
->chr_disconnect
= tcp_chr_disconnect
;
4926 cc
->get_msgfds
= tcp_get_msgfds
;
4927 cc
->set_msgfds
= tcp_set_msgfds
;
4928 cc
->chr_add_client
= tcp_chr_add_client
;
4929 cc
->chr_add_watch
= tcp_chr_add_watch
;
4930 cc
->chr_update_read_handler
= tcp_chr_update_read_handler
;
4931 cc
->chr_free
= tcp_chr_free
;
4934 static const TypeInfo char_socket_type_info
= {
4935 .name
= TYPE_CHARDEV_SOCKET
,
4936 .parent
= TYPE_CHARDEV
,
4937 .instance_size
= sizeof(SocketChardev
),
4938 .class_init
= char_socket_class_init
,
4941 static void qmp_chardev_open_udp(Chardev
*chr
,
4942 ChardevBackend
*backend
,
4946 ChardevUdp
*udp
= backend
->u
.udp
.data
;
4947 QIOChannelSocket
*sioc
= qio_channel_socket_new();
4949 UdpChardev
*s
= UDP_CHARDEV(chr
);
4951 if (qio_channel_socket_dgram_sync(sioc
,
4952 udp
->local
, udp
->remote
,
4954 object_unref(OBJECT(sioc
));
4958 name
= g_strdup_printf("chardev-udp-%s", chr
->label
);
4959 qio_channel_set_name(QIO_CHANNEL(sioc
), name
);
4962 s
->ioc
= QIO_CHANNEL(sioc
);
4963 /* be isn't opened until we get a connection */
4967 static const CharDriver udp_driver
= {
4968 .kind
= CHARDEV_BACKEND_KIND_UDP
,
4969 .parse
= qemu_chr_parse_udp
,
4972 static void char_udp_class_init(ObjectClass
*oc
, void *data
)
4974 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
4976 cc
->open
= qmp_chardev_open_udp
;
4977 cc
->chr_write
= udp_chr_write
;
4978 cc
->chr_update_read_handler
= udp_chr_update_read_handler
;
4981 static const TypeInfo char_udp_type_info
= {
4982 .name
= TYPE_CHARDEV_UDP
,
4983 .parent
= TYPE_CHARDEV
,
4984 .instance_size
= sizeof(UdpChardev
),
4985 .instance_finalize
= char_udp_finalize
,
4986 .class_init
= char_udp_class_init
,
4989 bool qemu_chr_has_feature(Chardev
*chr
,
4990 CharDriverFeature feature
)
4992 return test_bit(feature
, chr
->features
);
4995 void qemu_chr_set_feature(Chardev
*chr
,
4996 CharDriverFeature feature
)
4998 return set_bit(feature
, chr
->features
);
5001 static const ChardevClass
*char_get_class(const char *driver
, Error
**errp
)
5004 const ChardevClass
*cc
;
5005 char *typename
= g_strdup_printf("chardev-%s", driver
);
5007 oc
= object_class_by_name(typename
);
5010 if (!object_class_dynamic_cast(oc
, TYPE_CHARDEV
)) {
5011 error_setg(errp
, "'%s' is not a valid char driver name", driver
);
5015 if (object_class_is_abstract(oc
)) {
5016 error_setg(errp
, QERR_INVALID_PARAMETER_VALUE
, "driver",
5017 "abstract device type");
5021 cc
= CHARDEV_CLASS(oc
);
5023 error_setg(errp
, "'%s' is not a valid char driver name", driver
);
5030 Chardev
*qemu_chardev_new(const char *id
, const char *typename
,
5031 ChardevBackend
*backend
, Error
**errp
)
5033 Chardev
*chr
= NULL
;
5034 Error
*local_err
= NULL
;
5035 bool be_opened
= true;
5037 assert(g_str_has_prefix(typename
, "chardev-"));
5039 chr
= CHARDEV(object_new(typename
));
5040 chr
->label
= g_strdup(id
);
5042 qemu_char_open(chr
, backend
, &be_opened
, &local_err
);
5044 error_propagate(errp
, local_err
);
5045 object_unref(OBJECT(chr
));
5049 if (!chr
->filename
) {
5050 chr
->filename
= g_strdup(typename
+ 8);
5053 qemu_chr_be_event(chr
, CHR_EVENT_OPENED
);
5059 ChardevReturn
*qmp_chardev_add(const char *id
, ChardevBackend
*backend
,
5062 const ChardevClass
*cc
;
5066 chr
= qemu_chr_find(id
);
5068 error_setg(errp
, "Chardev '%s' already exists", id
);
5072 cc
= char_get_class(ChardevBackendKind_lookup
[backend
->type
], errp
);
5077 chr
= qemu_chardev_new(id
, object_class_get_name(OBJECT_CLASS(cc
)),
5083 ret
= g_new0(ChardevReturn
, 1);
5084 if (CHARDEV_IS_PTY(chr
)) {
5085 ret
->pty
= g_strdup(chr
->filename
+ 4);
5086 ret
->has_pty
= true;
5089 QTAILQ_INSERT_TAIL(&chardevs
, chr
, next
);
5093 void qmp_chardev_remove(const char *id
, Error
**errp
)
5097 chr
= qemu_chr_find(id
);
5099 error_setg(errp
, "Chardev '%s' not found", id
);
5102 if (qemu_chr_is_busy(chr
)) {
5103 error_setg(errp
, "Chardev '%s' is busy", id
);
5106 if (qemu_chr_replay(chr
)) {
5108 "Chardev '%s' cannot be unplugged in record/replay mode", id
);
5111 qemu_chr_delete(chr
);
5114 void qemu_chr_cleanup(void)
5118 QTAILQ_FOREACH_SAFE(chr
, &chardevs
, next
, tmp
) {
5119 qemu_chr_delete(chr
);
5123 static void register_types(void)
5125 static const struct {
5126 const CharDriver
*driver
;
5127 const TypeInfo
*type
;
5129 { &null_driver
, &char_null_type_info
},
5130 { &socket_driver
, &char_socket_type_info
},
5131 { &udp_driver
, &char_udp_type_info
},
5132 { &ringbuf_driver
, &char_ringbuf_type_info
},
5133 { &file_driver
, &char_file_type_info
},
5134 { &stdio_driver
, &char_stdio_type_info
},
5135 #ifdef HAVE_CHARDEV_SERIAL
5136 { &serial_driver
, &char_serial_type_info
},
5138 #ifdef HAVE_CHARDEV_PARPORT
5139 { ¶llel_driver
, &char_parallel_type_info
},
5141 #ifdef HAVE_CHARDEV_PTY
5142 { &pty_driver
, &char_pty_type_info
},
5145 { &console_driver
, &char_console_type_info
},
5147 { &pipe_driver
, &char_pipe_type_info
},
5148 { &mux_driver
, &char_mux_type_info
},
5149 { &memory_driver
, &char_memory_type_info
}
5153 type_register_static(&char_type_info
);
5155 type_register_static(&char_fd_type_info
);
5157 type_register_static(&char_win_type_info
);
5158 type_register_static(&char_win_stdio_type_info
);
5160 for (i
= 0; i
< ARRAY_SIZE(chardevs
); i
++) {
5161 type_register_static(chardevs
[i
].type
);
5162 register_char_driver(chardevs
[i
].driver
);
5165 /* this must be done after machine init, since we register FEs with muxes
5166 * as part of realize functions like serial_isa_realizefn when -nographic
5169 qemu_add_machine_init_done_notifier(&muxes_realize_notify
);
5172 type_init(register_types
);