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 MuxDriver MuxDriver
;
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(CharDriverStateHead
, CharDriverState
) chardevs
=
161 QTAILQ_HEAD_INITIALIZER(chardevs
);
163 static void qemu_chr_free_common(CharDriverState
*chr
);
165 CharDriverState
*qemu_chr_alloc(ChardevCommon
*backend
, Error
**errp
)
167 CharDriverState
*chr
= g_malloc0(sizeof(CharDriverState
));
168 qemu_mutex_init(&chr
->chr_write_lock
);
170 if (backend
->has_logfile
) {
171 int flags
= O_WRONLY
| O_CREAT
;
172 if (backend
->has_logappend
&&
173 backend
->logappend
) {
178 chr
->logfd
= qemu_open(backend
->logfile
, flags
, 0666);
179 if (chr
->logfd
< 0) {
180 error_setg_errno(errp
, errno
,
181 "Unable to open logfile %s",
193 void qemu_chr_be_event(CharDriverState
*s
, int event
)
195 CharBackend
*be
= s
->be
;
197 /* Keep track if the char device is open */
199 case CHR_EVENT_OPENED
:
202 case CHR_EVENT_CLOSED
:
207 if (!be
|| !be
->chr_event
) {
211 be
->chr_event(be
->opaque
, event
);
214 void qemu_chr_be_generic_open(CharDriverState
*s
)
216 qemu_chr_be_event(s
, CHR_EVENT_OPENED
);
220 /* Not reporting errors from writing to logfile, as logs are
221 * defined to be "best effort" only */
222 static void qemu_chr_fe_write_log(CharDriverState
*s
,
223 const uint8_t *buf
, size_t len
)
234 ret
= write(s
->logfd
, buf
+ done
, len
- done
);
235 if (ret
== -1 && errno
== EAGAIN
) {
247 static int qemu_chr_fe_write_buffer(CharDriverState
*s
, const uint8_t *buf
, int len
, int *offset
)
252 qemu_mutex_lock(&s
->chr_write_lock
);
253 while (*offset
< len
) {
255 res
= s
->chr_write(s
, buf
+ *offset
, len
- *offset
);
256 if (res
< 0 && errno
== EAGAIN
) {
268 qemu_chr_fe_write_log(s
, buf
, *offset
);
270 qemu_mutex_unlock(&s
->chr_write_lock
);
275 int qemu_chr_fe_write(CharBackend
*be
, const uint8_t *buf
, int len
)
277 CharDriverState
*s
= be
->chr
;
284 if (s
->replay
&& replay_mode
== REPLAY_MODE_PLAY
) {
286 replay_char_write_event_load(&ret
, &offset
);
287 assert(offset
<= len
);
288 qemu_chr_fe_write_buffer(s
, buf
, offset
, &offset
);
292 qemu_mutex_lock(&s
->chr_write_lock
);
293 ret
= s
->chr_write(s
, buf
, len
);
296 qemu_chr_fe_write_log(s
, buf
, ret
);
299 qemu_mutex_unlock(&s
->chr_write_lock
);
301 if (s
->replay
&& replay_mode
== REPLAY_MODE_RECORD
) {
302 replay_char_write_event_save(ret
, ret
< 0 ? 0 : ret
);
308 static int qemu_chr_write_all(CharDriverState
*s
, const uint8_t *buf
, int len
)
313 if (s
->replay
&& replay_mode
== REPLAY_MODE_PLAY
) {
314 replay_char_write_event_load(&res
, &offset
);
315 assert(offset
<= len
);
316 qemu_chr_fe_write_buffer(s
, buf
, offset
, &offset
);
320 res
= qemu_chr_fe_write_buffer(s
, buf
, len
, &offset
);
322 if (s
->replay
&& replay_mode
== REPLAY_MODE_RECORD
) {
323 replay_char_write_event_save(res
, offset
);
332 int qemu_chr_fe_write_all(CharBackend
*be
, const uint8_t *buf
, int len
)
334 CharDriverState
*s
= be
->chr
;
340 return qemu_chr_write_all(s
, buf
, len
);
343 int qemu_chr_fe_read_all(CharBackend
*be
, uint8_t *buf
, int len
)
345 CharDriverState
*s
= be
->chr
;
346 int offset
= 0, counter
= 10;
349 if (!s
|| !s
->chr_sync_read
) {
353 if (s
->replay
&& replay_mode
== REPLAY_MODE_PLAY
) {
354 return replay_char_read_all_load(buf
);
357 while (offset
< len
) {
359 res
= s
->chr_sync_read(s
, buf
+ offset
, len
- offset
);
360 if (res
== -1 && errno
== EAGAIN
) {
370 if (s
->replay
&& replay_mode
== REPLAY_MODE_RECORD
) {
371 replay_char_read_all_save_error(res
);
383 if (s
->replay
&& replay_mode
== REPLAY_MODE_RECORD
) {
384 replay_char_read_all_save_buf(buf
, offset
);
389 int qemu_chr_fe_ioctl(CharBackend
*be
, int cmd
, void *arg
)
391 CharDriverState
*s
= be
->chr
;
394 if (!s
|| !s
->chr_ioctl
|| s
->replay
) {
397 res
= s
->chr_ioctl(s
, cmd
, arg
);
403 int qemu_chr_be_can_write(CharDriverState
*s
)
405 CharBackend
*be
= s
->be
;
407 if (!be
|| !be
->chr_can_read
) {
411 return be
->chr_can_read(be
->opaque
);
414 void qemu_chr_be_write_impl(CharDriverState
*s
, uint8_t *buf
, int len
)
416 CharBackend
*be
= s
->be
;
418 if (be
&& be
->chr_read
) {
419 be
->chr_read(be
->opaque
, buf
, len
);
423 void qemu_chr_be_write(CharDriverState
*s
, uint8_t *buf
, int len
)
426 if (replay_mode
== REPLAY_MODE_PLAY
) {
429 replay_chr_be_write(s
, buf
, len
);
431 qemu_chr_be_write_impl(s
, buf
, len
);
435 int qemu_chr_fe_get_msgfd(CharBackend
*be
)
437 CharDriverState
*s
= be
->chr
;
439 int res
= (qemu_chr_fe_get_msgfds(be
, &fd
, 1) == 1) ? fd
: -1;
440 if (s
&& s
->replay
) {
442 "Replay: get msgfd is not supported for serial devices yet\n");
448 int qemu_chr_fe_get_msgfds(CharBackend
*be
, int *fds
, int len
)
450 CharDriverState
*s
= be
->chr
;
456 return s
->get_msgfds
? s
->get_msgfds(s
, fds
, len
) : -1;
459 int qemu_chr_fe_set_msgfds(CharBackend
*be
, int *fds
, int num
)
461 CharDriverState
*s
= be
->chr
;
467 return s
->set_msgfds
? s
->set_msgfds(s
, fds
, num
) : -1;
470 int qemu_chr_add_client(CharDriverState
*s
, int fd
)
472 return s
->chr_add_client
? s
->chr_add_client(s
, fd
) : -1;
475 void qemu_chr_fe_accept_input(CharBackend
*be
)
477 CharDriverState
*s
= be
->chr
;
483 if (s
->chr_accept_input
)
484 s
->chr_accept_input(s
);
488 void qemu_chr_fe_printf(CharBackend
*be
, const char *fmt
, ...)
490 char buf
[READ_BUF_LEN
];
493 vsnprintf(buf
, sizeof(buf
), fmt
, ap
);
494 /* XXX this blocks entire thread. Rewrite to use
495 * qemu_chr_fe_write and background I/O callbacks */
496 qemu_chr_fe_write_all(be
, (uint8_t *)buf
, strlen(buf
));
500 static void remove_fd_in_watch(CharDriverState
*chr
);
501 static void mux_chr_set_handlers(CharDriverState
*chr
, GMainContext
*context
);
502 static void mux_set_focus(MuxDriver
*d
, int focus
);
504 static int null_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
509 static CharDriverState
*qemu_chr_open_null(const char *id
,
510 ChardevBackend
*backend
,
514 CharDriverState
*chr
;
515 ChardevCommon
*common
= backend
->u
.null
.data
;
517 chr
= qemu_chr_alloc(common
, errp
);
521 chr
->chr_write
= null_chr_write
;
522 chr
->explicit_be_open
= true;
526 /* MUX driver for serial I/O splitting */
528 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
529 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
531 CharBackend
*backends
[MAX_MUX
];
537 /* Intermediate input buffer allows to catch escape sequences even if the
538 currently active device is not accepting any input - but only until it
540 unsigned char buffer
[MAX_MUX
][MUX_BUFFER_SIZE
];
545 /* Protected by the CharDriverState chr_write_lock. */
547 int64_t timestamps_start
;
550 /* Called with chr_write_lock held. */
551 static int mux_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
553 MuxDriver
*d
= chr
->opaque
;
555 if (!d
->timestamps
) {
556 ret
= qemu_chr_fe_write(&d
->chr
, buf
, len
);
561 for (i
= 0; i
< len
; i
++) {
567 ti
= qemu_clock_get_ms(QEMU_CLOCK_REALTIME
);
568 if (d
->timestamps_start
== -1)
569 d
->timestamps_start
= ti
;
570 ti
-= d
->timestamps_start
;
572 snprintf(buf1
, sizeof(buf1
),
573 "[%02d:%02d:%02d.%03d] ",
578 /* XXX this blocks entire thread. Rewrite to use
579 * qemu_chr_fe_write and background I/O callbacks */
580 qemu_chr_fe_write_all(&d
->chr
,
581 (uint8_t *)buf1
, strlen(buf1
));
584 ret
+= qemu_chr_fe_write(&d
->chr
, buf
+ i
, 1);
585 if (buf
[i
] == '\n') {
593 static const char * const mux_help
[] = {
594 "% h print this help\n\r",
595 "% x exit emulator\n\r",
596 "% s save disk data back to file (if -snapshot)\n\r",
597 "% t toggle console timestamps\n\r",
598 "% b send break (magic sysrq)\n\r",
599 "% c switch between console and monitor\n\r",
604 int term_escape_char
= 0x01; /* ctrl-a is used for escape */
605 static void mux_print_help(CharDriverState
*chr
)
608 char ebuf
[15] = "Escape-Char";
609 char cbuf
[50] = "\n\r";
611 if (term_escape_char
> 0 && term_escape_char
< 26) {
612 snprintf(cbuf
, sizeof(cbuf
), "\n\r");
613 snprintf(ebuf
, sizeof(ebuf
), "C-%c", term_escape_char
- 1 + 'a');
615 snprintf(cbuf
, sizeof(cbuf
),
616 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
619 /* XXX this blocks entire thread. Rewrite to use
620 * qemu_chr_fe_write and background I/O callbacks */
621 qemu_chr_write_all(chr
, (uint8_t *)cbuf
, strlen(cbuf
));
622 for (i
= 0; mux_help
[i
] != NULL
; i
++) {
623 for (j
=0; mux_help
[i
][j
] != '\0'; j
++) {
624 if (mux_help
[i
][j
] == '%')
625 qemu_chr_write_all(chr
, (uint8_t *)ebuf
, strlen(ebuf
));
627 qemu_chr_write_all(chr
, (uint8_t *)&mux_help
[i
][j
], 1);
632 static void mux_chr_send_event(MuxDriver
*d
, int mux_nr
, int event
)
634 CharBackend
*be
= d
->backends
[mux_nr
];
636 if (be
&& be
->chr_event
) {
637 be
->chr_event(be
->opaque
, event
);
641 static int mux_proc_byte(CharDriverState
*chr
, MuxDriver
*d
, int ch
)
643 if (d
->term_got_escape
) {
644 d
->term_got_escape
= 0;
645 if (ch
== term_escape_char
)
654 const char *term
= "QEMU: Terminated\n\r";
655 qemu_chr_write_all(chr
, (uint8_t *)term
, strlen(term
));
663 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
666 assert(d
->mux_cnt
> 0); /* handler registered with first fe */
667 /* Switch to the next registered device */
668 mux_set_focus(d
, (d
->focus
+ 1) % d
->mux_cnt
);
671 d
->timestamps
= !d
->timestamps
;
672 d
->timestamps_start
= -1;
676 } else if (ch
== term_escape_char
) {
677 d
->term_got_escape
= 1;
685 static void mux_chr_accept_input(CharDriverState
*chr
)
687 MuxDriver
*d
= chr
->opaque
;
689 CharBackend
*be
= d
->backends
[m
];
691 while (be
&& d
->prod
[m
] != d
->cons
[m
] &&
692 be
->chr_can_read
&& be
->chr_can_read(be
->opaque
)) {
693 be
->chr_read(be
->opaque
,
694 &d
->buffer
[m
][d
->cons
[m
]++ & MUX_BUFFER_MASK
], 1);
698 static int mux_chr_can_read(void *opaque
)
700 CharDriverState
*chr
= opaque
;
701 MuxDriver
*d
= chr
->opaque
;
703 CharBackend
*be
= d
->backends
[m
];
705 if ((d
->prod
[m
] - d
->cons
[m
]) < MUX_BUFFER_SIZE
) {
709 if (be
&& be
->chr_can_read
) {
710 return be
->chr_can_read(be
->opaque
);
716 static void mux_chr_read(void *opaque
, const uint8_t *buf
, int size
)
718 CharDriverState
*chr
= opaque
;
719 MuxDriver
*d
= chr
->opaque
;
721 CharBackend
*be
= d
->backends
[m
];
724 mux_chr_accept_input(opaque
);
726 for (i
= 0; i
< size
; i
++)
727 if (mux_proc_byte(chr
, d
, buf
[i
])) {
728 if (d
->prod
[m
] == d
->cons
[m
] &&
729 be
&& be
->chr_can_read
&&
730 be
->chr_can_read(be
->opaque
))
731 be
->chr_read(be
->opaque
, &buf
[i
], 1);
733 d
->buffer
[m
][d
->prod
[m
]++ & MUX_BUFFER_MASK
] = buf
[i
];
737 static void mux_chr_event(void *opaque
, int event
)
739 CharDriverState
*chr
= opaque
;
740 MuxDriver
*d
= chr
->opaque
;
743 /* Send the event to all registered listeners */
744 for (i
= 0; i
< d
->mux_cnt
; i
++)
745 mux_chr_send_event(d
, i
, event
);
748 static bool muxes_realized
;
751 * Called after processing of default and command-line-specified
752 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
753 * to a mux chardev. This is done here to ensure that
754 * output/prompts/banners are only displayed for the FE that has
755 * focus when initial command-line processing/machine init is
758 * After this point, any new FE attached to any new or existing
759 * mux will receive CHR_EVENT_OPENED notifications for the BE
762 static void muxes_realize_done(Notifier
*notifier
, void *unused
)
764 CharDriverState
*chr
;
766 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
768 MuxDriver
*d
= chr
->opaque
;
771 /* send OPENED to all already-attached FEs */
772 for (i
= 0; i
< d
->mux_cnt
; i
++) {
773 mux_chr_send_event(d
, i
, CHR_EVENT_OPENED
);
775 /* mark mux as OPENED so any new FEs will immediately receive
778 qemu_chr_be_generic_open(chr
);
781 muxes_realized
= true;
784 static Notifier muxes_realize_notify
= {
785 .notify
= muxes_realize_done
,
788 static GSource
*mux_chr_add_watch(CharDriverState
*s
, GIOCondition cond
)
790 MuxDriver
*d
= s
->opaque
;
791 CharDriverState
*chr
= qemu_chr_fe_get_driver(&d
->chr
);
793 return chr
->chr_add_watch(chr
, cond
);
796 static void mux_chr_free(struct CharDriverState
*chr
)
798 MuxDriver
*d
= chr
->opaque
;
801 for (i
= 0; i
< d
->mux_cnt
; i
++) {
802 CharBackend
*be
= d
->backends
[i
];
807 qemu_chr_fe_deinit(&d
->chr
);
811 static int mux_chr_new_fe(CharDriverState
*chr
, CharBackend
*be
, Error
**errp
)
813 MuxDriver
*d
= chr
->opaque
;
815 if (d
->mux_cnt
>= MAX_MUX
) {
816 fprintf(stderr
, "Cannot add I/O handlers, MUX array is full\n");
820 d
->backends
[d
->mux_cnt
] = be
;
825 static void mux_chr_set_handlers(CharDriverState
*chr
, GMainContext
*context
)
827 MuxDriver
*d
= chr
->opaque
;
829 /* Fix up the real driver with mux routines */
830 qemu_chr_fe_set_handlers(&d
->chr
,
838 static void mux_set_focus(MuxDriver
*d
, int focus
)
841 assert(focus
< d
->mux_cnt
);
843 if (d
->focus
!= -1) {
844 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_OUT
);
848 mux_chr_send_event(d
, d
->focus
, CHR_EVENT_MUX_IN
);
851 static CharDriverState
*qemu_chr_open_mux(const char *id
,
852 ChardevBackend
*backend
,
853 ChardevReturn
*ret
, Error
**errp
)
855 ChardevMux
*mux
= backend
->u
.mux
.data
;
856 CharDriverState
*chr
, *drv
;
858 ChardevCommon
*common
= qapi_ChardevMux_base(mux
);
860 drv
= qemu_chr_find(mux
->chardev
);
862 error_setg(errp
, "mux: base chardev %s not found", mux
->chardev
);
866 chr
= qemu_chr_alloc(common
, errp
);
870 d
= g_new0(MuxDriver
, 1);
874 chr
->chr_free
= mux_chr_free
;
875 chr
->chr_write
= mux_chr_write
;
876 chr
->chr_accept_input
= mux_chr_accept_input
;
877 /* Frontend guest-open / -close notification is not support with muxes */
878 chr
->chr_set_fe_open
= NULL
;
879 if (drv
->chr_add_watch
) {
880 chr
->chr_add_watch
= mux_chr_add_watch
;
882 /* only default to opened state if we've realized the initial
885 chr
->explicit_be_open
= muxes_realized
? 0 : 1;
887 if (!qemu_chr_fe_init(&d
->chr
, drv
, errp
)) {
895 CharDriverState
*qemu_chr_fe_get_driver(CharBackend
*be
)
900 bool qemu_chr_fe_init(CharBackend
*b
, CharDriverState
*s
, Error
**errp
)
905 tag
= mux_chr_new_fe(s
, b
, errp
);
920 static bool qemu_chr_is_busy(CharDriverState
*s
)
923 MuxDriver
*d
= s
->opaque
;
924 return d
->mux_cnt
>= 0;
926 return s
->be
!= NULL
;
930 void qemu_chr_fe_deinit(CharBackend
*b
)
935 qemu_chr_fe_set_handlers(b
, NULL
, NULL
, NULL
, NULL
, NULL
, true);
936 b
->chr
->avail_connections
++;
938 if (b
->chr
->is_mux
) {
939 MuxDriver
*d
= b
->chr
->opaque
;
940 d
->backends
[b
->tag
] = NULL
;
946 void qemu_chr_fe_set_handlers(CharBackend
*b
,
947 IOCanReadHandler
*fd_can_read
,
948 IOReadHandler
*fd_read
,
949 IOEventHandler
*fd_event
,
951 GMainContext
*context
,
962 if (!opaque
&& !fd_can_read
&& !fd_read
&& !fd_event
) {
964 remove_fd_in_watch(s
);
968 b
->chr_can_read
= fd_can_read
;
969 b
->chr_read
= fd_read
;
970 b
->chr_event
= fd_event
;
972 if (s
->chr_update_read_handler
) {
973 s
->chr_update_read_handler(s
, context
);
977 qemu_chr_fe_set_open(b
, fe_open
);
981 qemu_chr_fe_take_focus(b
);
982 /* We're connecting to an already opened device, so let's make sure we
983 also get the open event */
985 qemu_chr_be_generic_open(s
);
990 mux_chr_set_handlers(s
, context
);
994 void qemu_chr_fe_take_focus(CharBackend
*b
)
1000 if (b
->chr
->is_mux
) {
1001 mux_set_focus(b
->chr
->opaque
, b
->tag
);
1005 typedef struct IOWatchPoll
1012 IOCanReadHandler
*fd_can_read
;
1013 GSourceFunc fd_read
;
1015 GMainContext
*context
;
1018 static IOWatchPoll
*io_watch_poll_from_source(GSource
*source
)
1020 return container_of(source
, IOWatchPoll
, parent
);
1023 static gboolean
io_watch_poll_prepare(GSource
*source
,
1026 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
1027 bool now_active
= iwp
->fd_can_read(iwp
->opaque
) > 0;
1028 bool was_active
= iwp
->src
!= NULL
;
1029 if (was_active
== now_active
) {
1034 iwp
->src
= qio_channel_create_watch(
1035 iwp
->ioc
, G_IO_IN
| G_IO_ERR
| G_IO_HUP
| G_IO_NVAL
);
1036 g_source_set_callback(iwp
->src
, iwp
->fd_read
, iwp
->opaque
, NULL
);
1037 g_source_attach(iwp
->src
, iwp
->context
);
1039 g_source_destroy(iwp
->src
);
1040 g_source_unref(iwp
->src
);
1046 static gboolean
io_watch_poll_check(GSource
*source
)
1051 static gboolean
io_watch_poll_dispatch(GSource
*source
, GSourceFunc callback
,
1057 static void io_watch_poll_finalize(GSource
*source
)
1059 /* Due to a glib bug, removing the last reference to a source
1060 * inside a finalize callback causes recursive locking (and a
1061 * deadlock). This is not a problem inside other callbacks,
1062 * including dispatch callbacks, so we call io_remove_watch_poll
1063 * to remove this source. At this point, iwp->src must
1064 * be NULL, or we would leak it.
1066 * This would be solved much more elegantly by child sources,
1067 * but we support older glib versions that do not have them.
1069 IOWatchPoll
*iwp
= io_watch_poll_from_source(source
);
1070 assert(iwp
->src
== NULL
);
1073 static GSourceFuncs io_watch_poll_funcs
= {
1074 .prepare
= io_watch_poll_prepare
,
1075 .check
= io_watch_poll_check
,
1076 .dispatch
= io_watch_poll_dispatch
,
1077 .finalize
= io_watch_poll_finalize
,
1080 /* Can only be used for read */
1081 static guint
io_add_watch_poll(QIOChannel
*ioc
,
1082 IOCanReadHandler
*fd_can_read
,
1083 QIOChannelFunc fd_read
,
1085 GMainContext
*context
)
1090 iwp
= (IOWatchPoll
*) g_source_new(&io_watch_poll_funcs
,
1091 sizeof(IOWatchPoll
));
1092 iwp
->fd_can_read
= fd_can_read
;
1093 iwp
->opaque
= user_data
;
1095 iwp
->fd_read
= (GSourceFunc
) fd_read
;
1097 iwp
->context
= context
;
1099 tag
= g_source_attach(&iwp
->parent
, context
);
1100 g_source_unref(&iwp
->parent
);
1104 static void io_remove_watch_poll(guint tag
)
1109 g_return_if_fail (tag
> 0);
1111 source
= g_main_context_find_source_by_id(NULL
, tag
);
1112 g_return_if_fail (source
!= NULL
);
1114 iwp
= io_watch_poll_from_source(source
);
1116 g_source_destroy(iwp
->src
);
1117 g_source_unref(iwp
->src
);
1120 g_source_destroy(&iwp
->parent
);
1123 static void remove_fd_in_watch(CharDriverState
*chr
)
1125 if (chr
->fd_in_tag
) {
1126 io_remove_watch_poll(chr
->fd_in_tag
);
1132 static int io_channel_send_full(QIOChannel
*ioc
,
1133 const void *buf
, size_t len
,
1134 int *fds
, size_t nfds
)
1138 while (offset
< len
) {
1140 struct iovec iov
= { .iov_base
= (char *)buf
+ offset
,
1141 .iov_len
= len
- offset
};
1143 ret
= qio_channel_writev_full(
1146 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
1153 } else if (ret
< 0) {
1166 static int io_channel_send(QIOChannel
*ioc
, const void *buf
, size_t len
)
1168 return io_channel_send_full(ioc
, buf
, len
, NULL
, 0);
1172 typedef struct FDCharDriver
{
1173 CharDriverState
*chr
;
1174 QIOChannel
*ioc_in
, *ioc_out
;
1178 /* Called with chr_write_lock held. */
1179 static int fd_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
1181 FDCharDriver
*s
= chr
->opaque
;
1183 return io_channel_send(s
->ioc_out
, buf
, len
);
1186 static gboolean
fd_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
1188 CharDriverState
*chr
= opaque
;
1189 FDCharDriver
*s
= chr
->opaque
;
1191 uint8_t buf
[READ_BUF_LEN
];
1195 if (len
> s
->max_size
) {
1202 ret
= qio_channel_read(
1203 chan
, (gchar
*)buf
, len
, NULL
);
1205 remove_fd_in_watch(chr
);
1206 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1210 qemu_chr_be_write(chr
, buf
, ret
);
1216 static int fd_chr_read_poll(void *opaque
)
1218 CharDriverState
*chr
= opaque
;
1219 FDCharDriver
*s
= chr
->opaque
;
1221 s
->max_size
= qemu_chr_be_can_write(chr
);
1225 static GSource
*fd_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
1227 FDCharDriver
*s
= chr
->opaque
;
1228 return qio_channel_create_watch(s
->ioc_out
, cond
);
1231 static void fd_chr_update_read_handler(CharDriverState
*chr
,
1232 GMainContext
*context
)
1234 FDCharDriver
*s
= chr
->opaque
;
1236 remove_fd_in_watch(chr
);
1238 chr
->fd_in_tag
= io_add_watch_poll(s
->ioc_in
,
1245 static void fd_chr_free(struct CharDriverState
*chr
)
1247 FDCharDriver
*s
= chr
->opaque
;
1249 remove_fd_in_watch(chr
);
1251 object_unref(OBJECT(s
->ioc_in
));
1254 object_unref(OBJECT(s
->ioc_out
));
1258 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1261 /* open a character device to a unix fd */
1262 static CharDriverState
*qemu_chr_open_fd(int fd_in
, int fd_out
,
1263 ChardevCommon
*backend
, Error
**errp
)
1265 CharDriverState
*chr
;
1268 chr
= qemu_chr_alloc(backend
, errp
);
1272 s
= g_new0(FDCharDriver
, 1);
1273 s
->ioc_in
= QIO_CHANNEL(qio_channel_file_new_fd(fd_in
));
1274 s
->ioc_out
= QIO_CHANNEL(qio_channel_file_new_fd(fd_out
));
1275 qemu_set_nonblock(fd_out
);
1278 chr
->chr_add_watch
= fd_chr_add_watch
;
1279 chr
->chr_write
= fd_chr_write
;
1280 chr
->chr_update_read_handler
= fd_chr_update_read_handler
;
1281 chr
->chr_free
= fd_chr_free
;
1286 static CharDriverState
*qemu_chr_open_pipe(const char *id
,
1287 ChardevBackend
*backend
,
1291 ChardevHostdev
*opts
= backend
->u
.pipe
.data
;
1295 const char *filename
= opts
->device
;
1296 ChardevCommon
*common
= qapi_ChardevHostdev_base(opts
);
1299 filename_in
= g_strdup_printf("%s.in", filename
);
1300 filename_out
= g_strdup_printf("%s.out", filename
);
1301 TFR(fd_in
= qemu_open(filename_in
, O_RDWR
| O_BINARY
));
1302 TFR(fd_out
= qemu_open(filename_out
, O_RDWR
| O_BINARY
));
1303 g_free(filename_in
);
1304 g_free(filename_out
);
1305 if (fd_in
< 0 || fd_out
< 0) {
1310 TFR(fd_in
= fd_out
= qemu_open(filename
, O_RDWR
| O_BINARY
));
1312 error_setg_file_open(errp
, errno
, filename
);
1316 return qemu_chr_open_fd(fd_in
, fd_out
, common
, errp
);
1319 /* init terminal so that we can grab keys */
1320 static struct termios oldtty
;
1321 static int old_fd0_flags
;
1322 static bool stdio_in_use
;
1323 static bool stdio_allow_signal
;
1324 static bool stdio_echo_state
;
1326 static void qemu_chr_set_echo_stdio(CharDriverState
*chr
, bool echo
);
1328 static void term_exit(void)
1330 tcsetattr (0, TCSANOW
, &oldtty
);
1331 fcntl(0, F_SETFL
, old_fd0_flags
);
1334 static void term_stdio_handler(int sig
)
1336 /* restore echo after resume from suspend. */
1337 qemu_chr_set_echo_stdio(NULL
, stdio_echo_state
);
1340 static void qemu_chr_set_echo_stdio(CharDriverState
*chr
, bool echo
)
1344 stdio_echo_state
= echo
;
1347 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1348 |INLCR
|IGNCR
|ICRNL
|IXON
);
1349 tty
.c_oflag
|= OPOST
;
1350 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
);
1351 tty
.c_cflag
&= ~(CSIZE
|PARENB
);
1354 tty
.c_cc
[VTIME
] = 0;
1356 if (!stdio_allow_signal
)
1357 tty
.c_lflag
&= ~ISIG
;
1359 tcsetattr (0, TCSANOW
, &tty
);
1362 static void qemu_chr_free_stdio(struct CharDriverState
*chr
)
1368 static CharDriverState
*qemu_chr_open_stdio(const char *id
,
1369 ChardevBackend
*backend
,
1373 ChardevStdio
*opts
= backend
->u
.stdio
.data
;
1374 CharDriverState
*chr
;
1375 struct sigaction act
;
1376 ChardevCommon
*common
= qapi_ChardevStdio_base(opts
);
1378 if (is_daemonized()) {
1379 error_setg(errp
, "cannot use stdio with -daemonize");
1384 error_setg(errp
, "cannot use stdio by multiple character devices");
1388 stdio_in_use
= true;
1389 old_fd0_flags
= fcntl(0, F_GETFL
);
1390 tcgetattr(0, &oldtty
);
1391 qemu_set_nonblock(0);
1394 memset(&act
, 0, sizeof(act
));
1395 act
.sa_handler
= term_stdio_handler
;
1396 sigaction(SIGCONT
, &act
, NULL
);
1398 chr
= qemu_chr_open_fd(0, 1, common
, errp
);
1402 chr
->chr_free
= qemu_chr_free_stdio
;
1403 chr
->chr_set_echo
= qemu_chr_set_echo_stdio
;
1404 if (opts
->has_signal
) {
1405 stdio_allow_signal
= opts
->signal
;
1407 qemu_chr_set_echo_stdio(chr
, false);
1412 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1413 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1414 || defined(__GLIBC__)
1416 #define HAVE_CHARDEV_SERIAL 1
1417 #define HAVE_CHARDEV_PTY 1
1423 /* Protected by the CharDriverState chr_write_lock. */
1429 static void pty_chr_update_read_handler_locked(CharDriverState
*chr
);
1430 static void pty_chr_state(CharDriverState
*chr
, int connected
);
1432 static gboolean
pty_chr_timer(gpointer opaque
)
1434 struct CharDriverState
*chr
= opaque
;
1435 PtyCharDriver
*s
= chr
->opaque
;
1437 qemu_mutex_lock(&chr
->chr_write_lock
);
1440 if (!s
->connected
) {
1442 pty_chr_update_read_handler_locked(chr
);
1444 qemu_mutex_unlock(&chr
->chr_write_lock
);
1448 /* Called with chr_write_lock held. */
1449 static void pty_chr_rearm_timer(CharDriverState
*chr
, int ms
)
1451 PtyCharDriver
*s
= chr
->opaque
;
1454 g_source_remove(s
->timer_tag
);
1459 s
->timer_tag
= g_timeout_add_seconds(1, pty_chr_timer
, chr
);
1461 s
->timer_tag
= g_timeout_add(ms
, pty_chr_timer
, chr
);
1465 /* Called with chr_write_lock held. */
1466 static void pty_chr_update_read_handler_locked(CharDriverState
*chr
)
1468 PtyCharDriver
*s
= chr
->opaque
;
1471 QIOChannelFile
*fioc
= QIO_CHANNEL_FILE(s
->ioc
);
1474 pfd
.events
= G_IO_OUT
;
1477 rc
= g_poll(&pfd
, 1, 0);
1478 } while (rc
== -1 && errno
== EINTR
);
1481 if (pfd
.revents
& G_IO_HUP
) {
1482 pty_chr_state(chr
, 0);
1484 pty_chr_state(chr
, 1);
1488 static void pty_chr_update_read_handler(CharDriverState
*chr
,
1489 GMainContext
*context
)
1491 qemu_mutex_lock(&chr
->chr_write_lock
);
1492 pty_chr_update_read_handler_locked(chr
);
1493 qemu_mutex_unlock(&chr
->chr_write_lock
);
1496 /* Called with chr_write_lock held. */
1497 static int pty_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
1499 PtyCharDriver
*s
= chr
->opaque
;
1501 if (!s
->connected
) {
1502 /* guest sends data, check for (re-)connect */
1503 pty_chr_update_read_handler_locked(chr
);
1504 if (!s
->connected
) {
1508 return io_channel_send(s
->ioc
, buf
, len
);
1511 static GSource
*pty_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
1513 PtyCharDriver
*s
= chr
->opaque
;
1514 if (!s
->connected
) {
1517 return qio_channel_create_watch(s
->ioc
, cond
);
1520 static int pty_chr_read_poll(void *opaque
)
1522 CharDriverState
*chr
= opaque
;
1523 PtyCharDriver
*s
= chr
->opaque
;
1525 s
->read_bytes
= qemu_chr_be_can_write(chr
);
1526 return s
->read_bytes
;
1529 static gboolean
pty_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
1531 CharDriverState
*chr
= opaque
;
1532 PtyCharDriver
*s
= chr
->opaque
;
1534 uint8_t buf
[READ_BUF_LEN
];
1538 if (len
> s
->read_bytes
)
1539 len
= s
->read_bytes
;
1543 ret
= qio_channel_read(s
->ioc
, (char *)buf
, len
, NULL
);
1545 pty_chr_state(chr
, 0);
1548 pty_chr_state(chr
, 1);
1549 qemu_chr_be_write(chr
, buf
, ret
);
1554 static gboolean
qemu_chr_be_generic_open_func(gpointer opaque
)
1556 CharDriverState
*chr
= opaque
;
1557 PtyCharDriver
*s
= chr
->opaque
;
1560 qemu_chr_be_generic_open(chr
);
1564 /* Called with chr_write_lock held. */
1565 static void pty_chr_state(CharDriverState
*chr
, int connected
)
1567 PtyCharDriver
*s
= chr
->opaque
;
1571 g_source_remove(s
->open_tag
);
1574 remove_fd_in_watch(chr
);
1576 /* (re-)connect poll interval for idle guests: once per second.
1577 * We check more frequently in case the guests sends data to
1578 * the virtual device linked to our pty. */
1579 pty_chr_rearm_timer(chr
, 1000);
1582 g_source_remove(s
->timer_tag
);
1585 if (!s
->connected
) {
1586 g_assert(s
->open_tag
== 0);
1588 s
->open_tag
= g_idle_add(qemu_chr_be_generic_open_func
, chr
);
1590 if (!chr
->fd_in_tag
) {
1591 chr
->fd_in_tag
= io_add_watch_poll(s
->ioc
,
1599 static void pty_chr_free(struct CharDriverState
*chr
)
1601 PtyCharDriver
*s
= chr
->opaque
;
1603 qemu_mutex_lock(&chr
->chr_write_lock
);
1604 pty_chr_state(chr
, 0);
1605 object_unref(OBJECT(s
->ioc
));
1607 g_source_remove(s
->timer_tag
);
1610 qemu_mutex_unlock(&chr
->chr_write_lock
);
1612 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1615 static CharDriverState
*qemu_chr_open_pty(const char *id
,
1616 ChardevBackend
*backend
,
1620 CharDriverState
*chr
;
1622 int master_fd
, slave_fd
;
1623 char pty_name
[PATH_MAX
];
1624 ChardevCommon
*common
= backend
->u
.pty
.data
;
1626 master_fd
= qemu_openpty_raw(&slave_fd
, pty_name
);
1627 if (master_fd
< 0) {
1628 error_setg_errno(errp
, errno
, "Failed to create PTY");
1633 qemu_set_nonblock(master_fd
);
1635 chr
= qemu_chr_alloc(common
, errp
);
1641 chr
->filename
= g_strdup_printf("pty:%s", pty_name
);
1642 ret
->pty
= g_strdup(pty_name
);
1643 ret
->has_pty
= true;
1645 fprintf(stderr
, "char device redirected to %s (label %s)\n",
1648 s
= g_new0(PtyCharDriver
, 1);
1650 chr
->chr_write
= pty_chr_write
;
1651 chr
->chr_update_read_handler
= pty_chr_update_read_handler
;
1652 chr
->chr_free
= pty_chr_free
;
1653 chr
->chr_add_watch
= pty_chr_add_watch
;
1654 chr
->explicit_be_open
= true;
1656 s
->ioc
= QIO_CHANNEL(qio_channel_file_new_fd(master_fd
));
1662 static void tty_serial_init(int fd
, int speed
,
1663 int parity
, int data_bits
, int stop_bits
)
1669 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1670 speed
, parity
, data_bits
, stop_bits
);
1672 tcgetattr (fd
, &tty
);
1674 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1675 speed
= speed
* 10 / 11;
1692 /* Non-Posix values follow. They may be unsupported on some systems. */
1694 check_speed(115200);
1696 check_speed(230400);
1699 check_speed(460800);
1702 check_speed(500000);
1705 check_speed(576000);
1708 check_speed(921600);
1711 check_speed(1000000);
1714 check_speed(1152000);
1717 check_speed(1500000);
1720 check_speed(2000000);
1723 check_speed(2500000);
1726 check_speed(3000000);
1729 check_speed(3500000);
1732 check_speed(4000000);
1737 cfsetispeed(&tty
, spd
);
1738 cfsetospeed(&tty
, spd
);
1740 tty
.c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
1741 |INLCR
|IGNCR
|ICRNL
|IXON
);
1742 tty
.c_oflag
|= OPOST
;
1743 tty
.c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|IEXTEN
|ISIG
);
1744 tty
.c_cflag
&= ~(CSIZE
|PARENB
|PARODD
|CRTSCTS
|CSTOPB
);
1765 tty
.c_cflag
|= PARENB
;
1768 tty
.c_cflag
|= PARENB
| PARODD
;
1772 tty
.c_cflag
|= CSTOPB
;
1774 tcsetattr (fd
, TCSANOW
, &tty
);
1777 static int tty_serial_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
1779 FDCharDriver
*s
= chr
->opaque
;
1780 QIOChannelFile
*fioc
= QIO_CHANNEL_FILE(s
->ioc_in
);
1783 case CHR_IOCTL_SERIAL_SET_PARAMS
:
1785 QEMUSerialSetParams
*ssp
= arg
;
1786 tty_serial_init(fioc
->fd
,
1787 ssp
->speed
, ssp
->parity
,
1788 ssp
->data_bits
, ssp
->stop_bits
);
1791 case CHR_IOCTL_SERIAL_SET_BREAK
:
1793 int enable
= *(int *)arg
;
1795 tcsendbreak(fioc
->fd
, 1);
1799 case CHR_IOCTL_SERIAL_GET_TIOCM
:
1802 int *targ
= (int *)arg
;
1803 ioctl(fioc
->fd
, TIOCMGET
, &sarg
);
1805 if (sarg
& TIOCM_CTS
)
1806 *targ
|= CHR_TIOCM_CTS
;
1807 if (sarg
& TIOCM_CAR
)
1808 *targ
|= CHR_TIOCM_CAR
;
1809 if (sarg
& TIOCM_DSR
)
1810 *targ
|= CHR_TIOCM_DSR
;
1811 if (sarg
& TIOCM_RI
)
1812 *targ
|= CHR_TIOCM_RI
;
1813 if (sarg
& TIOCM_DTR
)
1814 *targ
|= CHR_TIOCM_DTR
;
1815 if (sarg
& TIOCM_RTS
)
1816 *targ
|= CHR_TIOCM_RTS
;
1819 case CHR_IOCTL_SERIAL_SET_TIOCM
:
1821 int sarg
= *(int *)arg
;
1823 ioctl(fioc
->fd
, TIOCMGET
, &targ
);
1824 targ
&= ~(CHR_TIOCM_CTS
| CHR_TIOCM_CAR
| CHR_TIOCM_DSR
1825 | CHR_TIOCM_RI
| CHR_TIOCM_DTR
| CHR_TIOCM_RTS
);
1826 if (sarg
& CHR_TIOCM_CTS
)
1828 if (sarg
& CHR_TIOCM_CAR
)
1830 if (sarg
& CHR_TIOCM_DSR
)
1832 if (sarg
& CHR_TIOCM_RI
)
1834 if (sarg
& CHR_TIOCM_DTR
)
1836 if (sarg
& CHR_TIOCM_RTS
)
1838 ioctl(fioc
->fd
, TIOCMSET
, &targ
);
1847 static void qemu_chr_free_tty(CharDriverState
*chr
)
1852 static CharDriverState
*qemu_chr_open_tty_fd(int fd
,
1853 ChardevCommon
*backend
,
1856 CharDriverState
*chr
;
1858 tty_serial_init(fd
, 115200, 'N', 8, 1);
1859 chr
= qemu_chr_open_fd(fd
, fd
, backend
, errp
);
1863 chr
->chr_ioctl
= tty_serial_ioctl
;
1864 chr
->chr_free
= qemu_chr_free_tty
;
1867 #endif /* __linux__ || __sun__ */
1869 #if defined(__linux__)
1871 #define HAVE_CHARDEV_PARPORT 1
1876 } ParallelCharDriver
;
1878 static int pp_hw_mode(ParallelCharDriver
*s
, uint16_t mode
)
1880 if (s
->mode
!= mode
) {
1882 if (ioctl(s
->fd
, PPSETMODE
, &m
) < 0)
1889 static int pp_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
1891 ParallelCharDriver
*drv
= chr
->opaque
;
1896 case CHR_IOCTL_PP_READ_DATA
:
1897 if (ioctl(fd
, PPRDATA
, &b
) < 0)
1899 *(uint8_t *)arg
= b
;
1901 case CHR_IOCTL_PP_WRITE_DATA
:
1902 b
= *(uint8_t *)arg
;
1903 if (ioctl(fd
, PPWDATA
, &b
) < 0)
1906 case CHR_IOCTL_PP_READ_CONTROL
:
1907 if (ioctl(fd
, PPRCONTROL
, &b
) < 0)
1909 /* Linux gives only the lowest bits, and no way to know data
1910 direction! For better compatibility set the fixed upper
1912 *(uint8_t *)arg
= b
| 0xc0;
1914 case CHR_IOCTL_PP_WRITE_CONTROL
:
1915 b
= *(uint8_t *)arg
;
1916 if (ioctl(fd
, PPWCONTROL
, &b
) < 0)
1919 case CHR_IOCTL_PP_READ_STATUS
:
1920 if (ioctl(fd
, PPRSTATUS
, &b
) < 0)
1922 *(uint8_t *)arg
= b
;
1924 case CHR_IOCTL_PP_DATA_DIR
:
1925 if (ioctl(fd
, PPDATADIR
, (int *)arg
) < 0)
1928 case CHR_IOCTL_PP_EPP_READ_ADDR
:
1929 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
1930 struct ParallelIOArg
*parg
= arg
;
1931 int n
= read(fd
, parg
->buffer
, parg
->count
);
1932 if (n
!= parg
->count
) {
1937 case CHR_IOCTL_PP_EPP_READ
:
1938 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
1939 struct ParallelIOArg
*parg
= arg
;
1940 int n
= read(fd
, parg
->buffer
, parg
->count
);
1941 if (n
!= parg
->count
) {
1946 case CHR_IOCTL_PP_EPP_WRITE_ADDR
:
1947 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
|IEEE1284_ADDR
)) {
1948 struct ParallelIOArg
*parg
= arg
;
1949 int n
= write(fd
, parg
->buffer
, parg
->count
);
1950 if (n
!= parg
->count
) {
1955 case CHR_IOCTL_PP_EPP_WRITE
:
1956 if (pp_hw_mode(drv
, IEEE1284_MODE_EPP
)) {
1957 struct ParallelIOArg
*parg
= arg
;
1958 int n
= write(fd
, parg
->buffer
, parg
->count
);
1959 if (n
!= parg
->count
) {
1970 static void pp_free(CharDriverState
*chr
)
1972 ParallelCharDriver
*drv
= chr
->opaque
;
1975 pp_hw_mode(drv
, IEEE1284_MODE_COMPAT
);
1976 ioctl(fd
, PPRELEASE
);
1979 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
1982 static CharDriverState
*qemu_chr_open_pp_fd(int fd
,
1983 ChardevCommon
*backend
,
1986 CharDriverState
*chr
;
1987 ParallelCharDriver
*drv
;
1989 if (ioctl(fd
, PPCLAIM
) < 0) {
1990 error_setg_errno(errp
, errno
, "not a parallel port");
1995 chr
= qemu_chr_alloc(backend
, errp
);
2000 drv
= g_new0(ParallelCharDriver
, 1);
2002 chr
->chr_write
= null_chr_write
;
2003 chr
->chr_ioctl
= pp_ioctl
;
2004 chr
->chr_free
= pp_free
;
2007 drv
->mode
= IEEE1284_MODE_COMPAT
;
2011 #endif /* __linux__ */
2013 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
2015 #define HAVE_CHARDEV_PARPORT 1
2017 static int pp_ioctl(CharDriverState
*chr
, int cmd
, void *arg
)
2019 int fd
= (int)(intptr_t)chr
->opaque
;
2023 case CHR_IOCTL_PP_READ_DATA
:
2024 if (ioctl(fd
, PPIGDATA
, &b
) < 0)
2026 *(uint8_t *)arg
= b
;
2028 case CHR_IOCTL_PP_WRITE_DATA
:
2029 b
= *(uint8_t *)arg
;
2030 if (ioctl(fd
, PPISDATA
, &b
) < 0)
2033 case CHR_IOCTL_PP_READ_CONTROL
:
2034 if (ioctl(fd
, PPIGCTRL
, &b
) < 0)
2036 *(uint8_t *)arg
= b
;
2038 case CHR_IOCTL_PP_WRITE_CONTROL
:
2039 b
= *(uint8_t *)arg
;
2040 if (ioctl(fd
, PPISCTRL
, &b
) < 0)
2043 case CHR_IOCTL_PP_READ_STATUS
:
2044 if (ioctl(fd
, PPIGSTATUS
, &b
) < 0)
2046 *(uint8_t *)arg
= b
;
2054 static CharDriverState
*qemu_chr_open_pp_fd(int fd
,
2055 ChardevCommon
*backend
,
2058 CharDriverState
*chr
;
2060 chr
= qemu_chr_alloc(backend
, errp
);
2064 chr
->opaque
= (void *)(intptr_t)fd
;
2065 chr
->chr_write
= null_chr_write
;
2066 chr
->chr_ioctl
= pp_ioctl
;
2067 chr
->explicit_be_open
= true;
2074 #define HAVE_CHARDEV_SERIAL 1
2078 HANDLE hcom
, hrecv
, hsend
;
2083 /* Protected by the CharDriverState chr_write_lock. */
2089 HANDLE hInputReadyEvent
;
2090 HANDLE hInputDoneEvent
;
2091 HANDLE hInputThread
;
2092 uint8_t win_stdio_buf
;
2093 } WinStdioCharState
;
2095 #define NSENDBUF 2048
2096 #define NRECVBUF 2048
2097 #define MAXCONNECT 1
2098 #define NTIMEOUT 5000
2100 static int win_chr_poll(void *opaque
);
2101 static int win_chr_pipe_poll(void *opaque
);
2103 static void win_chr_free(CharDriverState
*chr
)
2105 WinCharState
*s
= chr
->opaque
;
2108 CloseHandle(s
->hsend
);
2112 CloseHandle(s
->hrecv
);
2116 CloseHandle(s
->hcom
);
2120 qemu_del_polling_cb(win_chr_pipe_poll
, chr
);
2122 qemu_del_polling_cb(win_chr_poll
, chr
);
2124 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2127 static int win_chr_init(CharDriverState
*chr
, const char *filename
, Error
**errp
)
2129 WinCharState
*s
= chr
->opaque
;
2131 COMMTIMEOUTS cto
= { 0, 0, 0, 0, 0};
2136 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2138 error_setg(errp
, "Failed CreateEvent");
2141 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2143 error_setg(errp
, "Failed CreateEvent");
2147 s
->hcom
= CreateFile(filename
, GENERIC_READ
|GENERIC_WRITE
, 0, NULL
,
2148 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
2149 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
2150 error_setg(errp
, "Failed CreateFile (%lu)", GetLastError());
2155 if (!SetupComm(s
->hcom
, NRECVBUF
, NSENDBUF
)) {
2156 error_setg(errp
, "Failed SetupComm");
2160 ZeroMemory(&comcfg
, sizeof(COMMCONFIG
));
2161 size
= sizeof(COMMCONFIG
);
2162 GetDefaultCommConfig(filename
, &comcfg
, &size
);
2163 comcfg
.dcb
.DCBlength
= sizeof(DCB
);
2164 CommConfigDialog(filename
, NULL
, &comcfg
);
2166 if (!SetCommState(s
->hcom
, &comcfg
.dcb
)) {
2167 error_setg(errp
, "Failed SetCommState");
2171 if (!SetCommMask(s
->hcom
, EV_ERR
)) {
2172 error_setg(errp
, "Failed SetCommMask");
2176 cto
.ReadIntervalTimeout
= MAXDWORD
;
2177 if (!SetCommTimeouts(s
->hcom
, &cto
)) {
2178 error_setg(errp
, "Failed SetCommTimeouts");
2182 if (!ClearCommError(s
->hcom
, &err
, &comstat
)) {
2183 error_setg(errp
, "Failed ClearCommError");
2186 qemu_add_polling_cb(win_chr_poll
, chr
);
2194 /* Called with chr_write_lock held. */
2195 static int win_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len1
)
2197 WinCharState
*s
= chr
->opaque
;
2198 DWORD len
, ret
, size
, err
;
2201 ZeroMemory(&s
->osend
, sizeof(s
->osend
));
2202 s
->osend
.hEvent
= s
->hsend
;
2205 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, &s
->osend
);
2207 ret
= WriteFile(s
->hcom
, buf
, len
, &size
, NULL
);
2209 err
= GetLastError();
2210 if (err
== ERROR_IO_PENDING
) {
2211 ret
= GetOverlappedResult(s
->hcom
, &s
->osend
, &size
, TRUE
);
2229 static int win_chr_read_poll(CharDriverState
*chr
)
2231 WinCharState
*s
= chr
->opaque
;
2233 s
->max_size
= qemu_chr_be_can_write(chr
);
2237 static void win_chr_readfile(CharDriverState
*chr
)
2239 WinCharState
*s
= chr
->opaque
;
2241 uint8_t buf
[READ_BUF_LEN
];
2244 ZeroMemory(&s
->orecv
, sizeof(s
->orecv
));
2245 s
->orecv
.hEvent
= s
->hrecv
;
2246 ret
= ReadFile(s
->hcom
, buf
, s
->len
, &size
, &s
->orecv
);
2248 err
= GetLastError();
2249 if (err
== ERROR_IO_PENDING
) {
2250 ret
= GetOverlappedResult(s
->hcom
, &s
->orecv
, &size
, TRUE
);
2255 qemu_chr_be_write(chr
, buf
, size
);
2259 static void win_chr_read(CharDriverState
*chr
)
2261 WinCharState
*s
= chr
->opaque
;
2263 if (s
->len
> s
->max_size
)
2264 s
->len
= s
->max_size
;
2268 win_chr_readfile(chr
);
2271 static int win_chr_poll(void *opaque
)
2273 CharDriverState
*chr
= opaque
;
2274 WinCharState
*s
= chr
->opaque
;
2278 ClearCommError(s
->hcom
, &comerr
, &status
);
2279 if (status
.cbInQue
> 0) {
2280 s
->len
= status
.cbInQue
;
2281 win_chr_read_poll(chr
);
2288 static CharDriverState
*qemu_chr_open_win_path(const char *filename
,
2289 ChardevCommon
*backend
,
2292 CharDriverState
*chr
;
2295 chr
= qemu_chr_alloc(backend
, errp
);
2299 s
= g_new0(WinCharState
, 1);
2301 chr
->chr_write
= win_chr_write
;
2302 chr
->chr_free
= win_chr_free
;
2304 if (win_chr_init(chr
, filename
, errp
) < 0) {
2306 qemu_chr_free_common(chr
);
2312 static int win_chr_pipe_poll(void *opaque
)
2314 CharDriverState
*chr
= opaque
;
2315 WinCharState
*s
= chr
->opaque
;
2318 PeekNamedPipe(s
->hcom
, NULL
, 0, NULL
, &size
, NULL
);
2321 win_chr_read_poll(chr
);
2328 static int win_chr_pipe_init(CharDriverState
*chr
, const char *filename
,
2331 WinCharState
*s
= chr
->opaque
;
2339 s
->hsend
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2341 error_setg(errp
, "Failed CreateEvent");
2344 s
->hrecv
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2346 error_setg(errp
, "Failed CreateEvent");
2350 openname
= g_strdup_printf("\\\\.\\pipe\\%s", filename
);
2351 s
->hcom
= CreateNamedPipe(openname
, PIPE_ACCESS_DUPLEX
| FILE_FLAG_OVERLAPPED
,
2352 PIPE_TYPE_BYTE
| PIPE_READMODE_BYTE
|
2354 MAXCONNECT
, NSENDBUF
, NRECVBUF
, NTIMEOUT
, NULL
);
2356 if (s
->hcom
== INVALID_HANDLE_VALUE
) {
2357 error_setg(errp
, "Failed CreateNamedPipe (%lu)", GetLastError());
2362 ZeroMemory(&ov
, sizeof(ov
));
2363 ov
.hEvent
= CreateEvent(NULL
, TRUE
, FALSE
, NULL
);
2364 ret
= ConnectNamedPipe(s
->hcom
, &ov
);
2366 error_setg(errp
, "Failed ConnectNamedPipe");
2370 ret
= GetOverlappedResult(s
->hcom
, &ov
, &size
, TRUE
);
2372 error_setg(errp
, "Failed GetOverlappedResult");
2374 CloseHandle(ov
.hEvent
);
2381 CloseHandle(ov
.hEvent
);
2384 qemu_add_polling_cb(win_chr_pipe_poll
, chr
);
2393 static CharDriverState
*qemu_chr_open_pipe(const char *id
,
2394 ChardevBackend
*backend
,
2398 ChardevHostdev
*opts
= backend
->u
.pipe
.data
;
2399 const char *filename
= opts
->device
;
2400 CharDriverState
*chr
;
2402 ChardevCommon
*common
= qapi_ChardevHostdev_base(opts
);
2404 chr
= qemu_chr_alloc(common
, errp
);
2408 s
= g_new0(WinCharState
, 1);
2410 chr
->chr_write
= win_chr_write
;
2411 chr
->chr_free
= win_chr_free
;
2413 if (win_chr_pipe_init(chr
, filename
, errp
) < 0) {
2415 qemu_chr_free_common(chr
);
2421 static CharDriverState
*qemu_chr_open_win_file(HANDLE fd_out
,
2422 ChardevCommon
*backend
,
2425 CharDriverState
*chr
;
2428 chr
= qemu_chr_alloc(backend
, errp
);
2432 s
= g_new0(WinCharState
, 1);
2435 chr
->chr_write
= win_chr_write
;
2439 static CharDriverState
*qemu_chr_open_win_con(const char *id
,
2440 ChardevBackend
*backend
,
2444 ChardevCommon
*common
= backend
->u
.console
.data
;
2445 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE
),
2449 static int win_stdio_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2451 HANDLE hStdOut
= GetStdHandle(STD_OUTPUT_HANDLE
);
2458 if (!WriteFile(hStdOut
, buf
, len1
, &dwSize
, NULL
)) {
2468 static void win_stdio_wait_func(void *opaque
)
2470 CharDriverState
*chr
= opaque
;
2471 WinStdioCharState
*stdio
= chr
->opaque
;
2472 INPUT_RECORD buf
[4];
2477 ret
= ReadConsoleInput(stdio
->hStdIn
, buf
, ARRAY_SIZE(buf
), &dwSize
);
2480 /* Avoid error storm */
2481 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2485 for (i
= 0; i
< dwSize
; i
++) {
2486 KEY_EVENT_RECORD
*kev
= &buf
[i
].Event
.KeyEvent
;
2488 if (buf
[i
].EventType
== KEY_EVENT
&& kev
->bKeyDown
) {
2490 if (kev
->uChar
.AsciiChar
!= 0) {
2491 for (j
= 0; j
< kev
->wRepeatCount
; j
++) {
2492 if (qemu_chr_be_can_write(chr
)) {
2493 uint8_t c
= kev
->uChar
.AsciiChar
;
2494 qemu_chr_be_write(chr
, &c
, 1);
2502 static DWORD WINAPI
win_stdio_thread(LPVOID param
)
2504 CharDriverState
*chr
= param
;
2505 WinStdioCharState
*stdio
= chr
->opaque
;
2511 /* Wait for one byte */
2512 ret
= ReadFile(stdio
->hStdIn
, &stdio
->win_stdio_buf
, 1, &dwSize
, NULL
);
2514 /* Exit in case of error, continue if nothing read */
2522 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2523 if (stdio
->win_stdio_buf
== '\r') {
2527 /* Signal the main thread and wait until the byte was eaten */
2528 if (!SetEvent(stdio
->hInputReadyEvent
)) {
2531 if (WaitForSingleObject(stdio
->hInputDoneEvent
, INFINITE
)
2537 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2541 static void win_stdio_thread_wait_func(void *opaque
)
2543 CharDriverState
*chr
= opaque
;
2544 WinStdioCharState
*stdio
= chr
->opaque
;
2546 if (qemu_chr_be_can_write(chr
)) {
2547 qemu_chr_be_write(chr
, &stdio
->win_stdio_buf
, 1);
2550 SetEvent(stdio
->hInputDoneEvent
);
2553 static void qemu_chr_set_echo_win_stdio(CharDriverState
*chr
, bool echo
)
2555 WinStdioCharState
*stdio
= chr
->opaque
;
2558 GetConsoleMode(stdio
->hStdIn
, &dwMode
);
2561 SetConsoleMode(stdio
->hStdIn
, dwMode
| ENABLE_ECHO_INPUT
);
2563 SetConsoleMode(stdio
->hStdIn
, dwMode
& ~ENABLE_ECHO_INPUT
);
2567 static void win_stdio_free(CharDriverState
*chr
)
2569 WinStdioCharState
*stdio
= chr
->opaque
;
2571 if (stdio
->hInputReadyEvent
!= INVALID_HANDLE_VALUE
) {
2572 CloseHandle(stdio
->hInputReadyEvent
);
2574 if (stdio
->hInputDoneEvent
!= INVALID_HANDLE_VALUE
) {
2575 CloseHandle(stdio
->hInputDoneEvent
);
2577 if (stdio
->hInputThread
!= INVALID_HANDLE_VALUE
) {
2578 TerminateThread(stdio
->hInputThread
, 0);
2581 g_free(chr
->opaque
);
2584 static CharDriverState
*qemu_chr_open_stdio(const char *id
,
2585 ChardevBackend
*backend
,
2589 CharDriverState
*chr
;
2590 WinStdioCharState
*stdio
;
2593 ChardevCommon
*common
= qapi_ChardevStdio_base(backend
->u
.stdio
.data
);
2595 chr
= qemu_chr_alloc(common
, errp
);
2599 stdio
= g_new0(WinStdioCharState
, 1);
2601 stdio
->hStdIn
= GetStdHandle(STD_INPUT_HANDLE
);
2602 if (stdio
->hStdIn
== INVALID_HANDLE_VALUE
) {
2603 error_setg(errp
, "cannot open stdio: invalid handle");
2607 is_console
= GetConsoleMode(stdio
->hStdIn
, &dwMode
) != 0;
2609 chr
->opaque
= stdio
;
2610 chr
->chr_write
= win_stdio_write
;
2611 chr
->chr_free
= win_stdio_free
;
2614 if (qemu_add_wait_object(stdio
->hStdIn
,
2615 win_stdio_wait_func
, chr
)) {
2616 error_setg(errp
, "qemu_add_wait_object: failed");
2622 stdio
->hInputReadyEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2623 stdio
->hInputDoneEvent
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2624 if (stdio
->hInputReadyEvent
== INVALID_HANDLE_VALUE
2625 || stdio
->hInputDoneEvent
== INVALID_HANDLE_VALUE
) {
2626 error_setg(errp
, "cannot create event");
2629 if (qemu_add_wait_object(stdio
->hInputReadyEvent
,
2630 win_stdio_thread_wait_func
, chr
)) {
2631 error_setg(errp
, "qemu_add_wait_object: failed");
2634 stdio
->hInputThread
= CreateThread(NULL
, 0, win_stdio_thread
,
2637 if (stdio
->hInputThread
== INVALID_HANDLE_VALUE
) {
2638 error_setg(errp
, "cannot create stdio thread");
2643 dwMode
|= ENABLE_LINE_INPUT
;
2646 /* set the terminal in raw mode */
2647 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2648 dwMode
|= ENABLE_PROCESSED_INPUT
;
2651 SetConsoleMode(stdio
->hStdIn
, dwMode
);
2653 chr
->chr_set_echo
= qemu_chr_set_echo_win_stdio
;
2654 qemu_chr_set_echo_win_stdio(chr
, false);
2659 qemu_del_wait_object(stdio
->hInputReadyEvent
, NULL
, NULL
);
2661 CloseHandle(stdio
->hInputReadyEvent
);
2662 CloseHandle(stdio
->hInputDoneEvent
);
2664 qemu_del_wait_object(stdio
->hStdIn
, NULL
, NULL
);
2667 #endif /* !_WIN32 */
2669 /***********************************************************/
2670 /* UDP Net console */
2674 uint8_t buf
[READ_BUF_LEN
];
2680 /* Called with chr_write_lock held. */
2681 static int udp_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2683 NetCharDriver
*s
= chr
->opaque
;
2685 return qio_channel_write(
2686 s
->ioc
, (const char *)buf
, len
, NULL
);
2689 static int udp_chr_read_poll(void *opaque
)
2691 CharDriverState
*chr
= opaque
;
2692 NetCharDriver
*s
= chr
->opaque
;
2694 s
->max_size
= qemu_chr_be_can_write(chr
);
2696 /* If there were any stray characters in the queue process them
2699 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2700 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2702 s
->max_size
= qemu_chr_be_can_write(chr
);
2707 static gboolean
udp_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
2709 CharDriverState
*chr
= opaque
;
2710 NetCharDriver
*s
= chr
->opaque
;
2713 if (s
->max_size
== 0) {
2716 ret
= qio_channel_read(
2717 s
->ioc
, (char *)s
->buf
, sizeof(s
->buf
), NULL
);
2719 remove_fd_in_watch(chr
);
2725 while (s
->max_size
> 0 && s
->bufptr
< s
->bufcnt
) {
2726 qemu_chr_be_write(chr
, &s
->buf
[s
->bufptr
], 1);
2728 s
->max_size
= qemu_chr_be_can_write(chr
);
2734 static void udp_chr_update_read_handler(CharDriverState
*chr
,
2735 GMainContext
*context
)
2737 NetCharDriver
*s
= chr
->opaque
;
2739 remove_fd_in_watch(chr
);
2741 chr
->fd_in_tag
= io_add_watch_poll(s
->ioc
,
2748 static void udp_chr_free(CharDriverState
*chr
)
2750 NetCharDriver
*s
= chr
->opaque
;
2752 remove_fd_in_watch(chr
);
2754 object_unref(OBJECT(s
->ioc
));
2757 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
2760 static CharDriverState
*qemu_chr_open_udp(QIOChannelSocket
*sioc
,
2761 ChardevCommon
*backend
,
2764 CharDriverState
*chr
= NULL
;
2765 NetCharDriver
*s
= NULL
;
2767 chr
= qemu_chr_alloc(backend
, errp
);
2771 s
= g_new0(NetCharDriver
, 1);
2773 s
->ioc
= QIO_CHANNEL(sioc
);
2777 chr
->chr_write
= udp_chr_write
;
2778 chr
->chr_update_read_handler
= udp_chr_update_read_handler
;
2779 chr
->chr_free
= udp_chr_free
;
2780 /* be isn't opened until we get a connection */
2781 chr
->explicit_be_open
= true;
2785 /***********************************************************/
2786 /* TCP Net console */
2789 QIOChannel
*ioc
; /* Client I/O channel */
2790 QIOChannelSocket
*sioc
; /* Client master channel */
2791 QIOChannelSocket
*listen_ioc
;
2793 QCryptoTLSCreds
*tls_creds
;
2800 size_t read_msgfds_num
;
2802 size_t write_msgfds_num
;
2804 SocketAddress
*addr
;
2808 guint reconnect_timer
;
2809 int64_t reconnect_time
;
2810 bool connect_err_reported
;
2813 static gboolean
socket_reconnect_timeout(gpointer opaque
);
2815 static void qemu_chr_socket_restart_timer(CharDriverState
*chr
)
2817 TCPCharDriver
*s
= chr
->opaque
;
2818 assert(s
->connected
== 0);
2819 s
->reconnect_timer
= g_timeout_add_seconds(s
->reconnect_time
,
2820 socket_reconnect_timeout
, chr
);
2823 static void check_report_connect_error(CharDriverState
*chr
,
2826 TCPCharDriver
*s
= chr
->opaque
;
2828 if (!s
->connect_err_reported
) {
2829 error_report("Unable to connect character device %s: %s",
2830 chr
->label
, error_get_pretty(err
));
2831 s
->connect_err_reported
= true;
2833 qemu_chr_socket_restart_timer(chr
);
2836 static gboolean
tcp_chr_accept(QIOChannel
*chan
,
2840 /* Called with chr_write_lock held. */
2841 static int tcp_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
2843 TCPCharDriver
*s
= chr
->opaque
;
2845 int ret
= io_channel_send_full(s
->ioc
, buf
, len
,
2847 s
->write_msgfds_num
);
2849 /* free the written msgfds, no matter what */
2850 if (s
->write_msgfds_num
) {
2851 g_free(s
->write_msgfds
);
2852 s
->write_msgfds
= 0;
2853 s
->write_msgfds_num
= 0;
2858 /* XXX: indicate an error ? */
2863 static int tcp_chr_read_poll(void *opaque
)
2865 CharDriverState
*chr
= opaque
;
2866 TCPCharDriver
*s
= chr
->opaque
;
2869 s
->max_size
= qemu_chr_be_can_write(chr
);
2874 #define IAC_BREAK 243
2875 static void tcp_chr_process_IAC_bytes(CharDriverState
*chr
,
2877 uint8_t *buf
, int *size
)
2879 /* Handle any telnet client's basic IAC options to satisfy char by
2880 * char mode with no echo. All IAC options will be removed from
2881 * the buf and the do_telnetopt variable will be used to track the
2882 * state of the width of the IAC information.
2884 * IAC commands come in sets of 3 bytes with the exception of the
2885 * "IAC BREAK" command and the double IAC.
2891 for (i
= 0; i
< *size
; i
++) {
2892 if (s
->do_telnetopt
> 1) {
2893 if ((unsigned char)buf
[i
] == IAC
&& s
->do_telnetopt
== 2) {
2894 /* Double IAC means send an IAC */
2898 s
->do_telnetopt
= 1;
2900 if ((unsigned char)buf
[i
] == IAC_BREAK
&& s
->do_telnetopt
== 2) {
2901 /* Handle IAC break commands by sending a serial break */
2902 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
2907 if (s
->do_telnetopt
>= 4) {
2908 s
->do_telnetopt
= 1;
2911 if ((unsigned char)buf
[i
] == IAC
) {
2912 s
->do_telnetopt
= 2;
2923 static int tcp_get_msgfds(CharDriverState
*chr
, int *fds
, int num
)
2925 TCPCharDriver
*s
= chr
->opaque
;
2926 int to_copy
= (s
->read_msgfds_num
< num
) ? s
->read_msgfds_num
: num
;
2928 assert(num
<= TCP_MAX_FDS
);
2933 memcpy(fds
, s
->read_msgfds
, to_copy
* sizeof(int));
2935 /* Close unused fds */
2936 for (i
= to_copy
; i
< s
->read_msgfds_num
; i
++) {
2937 close(s
->read_msgfds
[i
]);
2940 g_free(s
->read_msgfds
);
2942 s
->read_msgfds_num
= 0;
2948 static int tcp_set_msgfds(CharDriverState
*chr
, int *fds
, int num
)
2950 TCPCharDriver
*s
= chr
->opaque
;
2952 /* clear old pending fd array */
2953 g_free(s
->write_msgfds
);
2954 s
->write_msgfds
= NULL
;
2955 s
->write_msgfds_num
= 0;
2957 if (!s
->connected
||
2958 !qio_channel_has_feature(s
->ioc
,
2959 QIO_CHANNEL_FEATURE_FD_PASS
)) {
2964 s
->write_msgfds
= g_new(int, num
);
2965 memcpy(s
->write_msgfds
, fds
, num
* sizeof(int));
2968 s
->write_msgfds_num
= num
;
2973 static ssize_t
tcp_chr_recv(CharDriverState
*chr
, char *buf
, size_t len
)
2975 TCPCharDriver
*s
= chr
->opaque
;
2976 struct iovec iov
= { .iov_base
= buf
, .iov_len
= len
};
2980 size_t msgfds_num
= 0;
2982 if (qio_channel_has_feature(s
->ioc
, QIO_CHANNEL_FEATURE_FD_PASS
)) {
2983 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
2984 &msgfds
, &msgfds_num
,
2987 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
2992 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
2995 } else if (ret
== -1) {
3000 /* close and clean read_msgfds */
3001 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3002 close(s
->read_msgfds
[i
]);
3005 if (s
->read_msgfds_num
) {
3006 g_free(s
->read_msgfds
);
3009 s
->read_msgfds
= msgfds
;
3010 s
->read_msgfds_num
= msgfds_num
;
3013 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3014 int fd
= s
->read_msgfds
[i
];
3019 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
3022 #ifndef MSG_CMSG_CLOEXEC
3023 qemu_set_cloexec(fd
);
3030 static GSource
*tcp_chr_add_watch(CharDriverState
*chr
, GIOCondition cond
)
3032 TCPCharDriver
*s
= chr
->opaque
;
3033 return qio_channel_create_watch(s
->ioc
, cond
);
3036 static void tcp_chr_free_connection(CharDriverState
*chr
)
3038 TCPCharDriver
*s
= chr
->opaque
;
3041 if (!s
->connected
) {
3045 if (s
->read_msgfds_num
) {
3046 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
3047 close(s
->read_msgfds
[i
]);
3049 g_free(s
->read_msgfds
);
3050 s
->read_msgfds
= NULL
;
3051 s
->read_msgfds_num
= 0;
3054 tcp_set_msgfds(chr
, NULL
, 0);
3055 remove_fd_in_watch(chr
);
3056 object_unref(OBJECT(s
->sioc
));
3058 object_unref(OBJECT(s
->ioc
));
3060 g_free(chr
->filename
);
3061 chr
->filename
= NULL
;
3065 static void tcp_chr_disconnect(CharDriverState
*chr
)
3067 TCPCharDriver
*s
= chr
->opaque
;
3069 if (!s
->connected
) {
3073 tcp_chr_free_connection(chr
);
3075 if (s
->listen_ioc
) {
3076 s
->listen_tag
= qio_channel_add_watch(
3077 QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
, tcp_chr_accept
, chr
, NULL
);
3079 chr
->filename
= SocketAddress_to_str("disconnected:", s
->addr
,
3080 s
->is_listen
, s
->is_telnet
);
3081 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
3082 if (s
->reconnect_time
) {
3083 qemu_chr_socket_restart_timer(chr
);
3087 static gboolean
tcp_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
3089 CharDriverState
*chr
= opaque
;
3090 TCPCharDriver
*s
= chr
->opaque
;
3091 uint8_t buf
[READ_BUF_LEN
];
3094 if (!s
->connected
|| s
->max_size
<= 0) {
3098 if (len
> s
->max_size
)
3100 size
= tcp_chr_recv(chr
, (void *)buf
, len
);
3101 if (size
== 0 || size
== -1) {
3102 /* connection closed */
3103 tcp_chr_disconnect(chr
);
3104 } else if (size
> 0) {
3105 if (s
->do_telnetopt
)
3106 tcp_chr_process_IAC_bytes(chr
, s
, buf
, &size
);
3108 qemu_chr_be_write(chr
, buf
, size
);
3114 static int tcp_chr_sync_read(CharDriverState
*chr
, const uint8_t *buf
, int len
)
3116 TCPCharDriver
*s
= chr
->opaque
;
3119 if (!s
->connected
) {
3123 size
= tcp_chr_recv(chr
, (void *) buf
, len
);
3125 /* connection closed */
3126 tcp_chr_disconnect(chr
);
3132 static void tcp_chr_connect(void *opaque
)
3134 CharDriverState
*chr
= opaque
;
3135 TCPCharDriver
*s
= chr
->opaque
;
3137 g_free(chr
->filename
);
3138 chr
->filename
= sockaddr_to_str(
3139 &s
->sioc
->localAddr
, s
->sioc
->localAddrLen
,
3140 &s
->sioc
->remoteAddr
, s
->sioc
->remoteAddrLen
,
3141 s
->is_listen
, s
->is_telnet
);
3145 chr
->fd_in_tag
= io_add_watch_poll(s
->ioc
,
3150 qemu_chr_be_generic_open(chr
);
3153 static void tcp_chr_update_read_handler(CharDriverState
*chr
,
3154 GMainContext
*context
)
3156 TCPCharDriver
*s
= chr
->opaque
;
3158 if (!s
->connected
) {
3162 remove_fd_in_watch(chr
);
3164 chr
->fd_in_tag
= io_add_watch_poll(s
->ioc
,
3172 CharDriverState
*chr
;
3175 } TCPCharDriverTelnetInit
;
3177 static gboolean
tcp_chr_telnet_init_io(QIOChannel
*ioc
,
3178 GIOCondition cond G_GNUC_UNUSED
,
3181 TCPCharDriverTelnetInit
*init
= user_data
;
3184 ret
= qio_channel_write(ioc
, init
->buf
, init
->buflen
, NULL
);
3186 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
3189 tcp_chr_disconnect(init
->chr
);
3193 init
->buflen
-= ret
;
3195 if (init
->buflen
== 0) {
3196 tcp_chr_connect(init
->chr
);
3200 memmove(init
->buf
, init
->buf
+ ret
, init
->buflen
);
3205 static void tcp_chr_telnet_init(CharDriverState
*chr
)
3207 TCPCharDriver
*s
= chr
->opaque
;
3208 TCPCharDriverTelnetInit
*init
=
3209 g_new0(TCPCharDriverTelnetInit
, 1);
3215 #define IACSET(x, a, b, c) \
3222 /* Prep the telnet negotion to put telnet in binary,
3223 * no echo, single char mode */
3224 IACSET(init
->buf
, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3225 IACSET(init
->buf
, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3226 IACSET(init
->buf
, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3227 IACSET(init
->buf
, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3231 qio_channel_add_watch(
3233 tcp_chr_telnet_init_io
,
3238 static void tcp_chr_tls_handshake(Object
*source
,
3242 CharDriverState
*chr
= user_data
;
3243 TCPCharDriver
*s
= chr
->opaque
;
3246 tcp_chr_disconnect(chr
);
3248 if (s
->do_telnetopt
) {
3249 tcp_chr_telnet_init(chr
);
3251 tcp_chr_connect(chr
);
3257 static void tcp_chr_tls_init(CharDriverState
*chr
)
3259 TCPCharDriver
*s
= chr
->opaque
;
3260 QIOChannelTLS
*tioc
;
3264 tioc
= qio_channel_tls_new_server(
3265 s
->ioc
, s
->tls_creds
,
3266 NULL
, /* XXX Use an ACL */
3269 tioc
= qio_channel_tls_new_client(
3270 s
->ioc
, s
->tls_creds
,
3271 s
->addr
->u
.inet
.data
->host
,
3276 tcp_chr_disconnect(chr
);
3279 object_unref(OBJECT(s
->ioc
));
3280 s
->ioc
= QIO_CHANNEL(tioc
);
3282 qio_channel_tls_handshake(tioc
,
3283 tcp_chr_tls_handshake
,
3289 static int tcp_chr_new_client(CharDriverState
*chr
, QIOChannelSocket
*sioc
)
3291 TCPCharDriver
*s
= chr
->opaque
;
3292 if (s
->ioc
!= NULL
) {
3296 s
->ioc
= QIO_CHANNEL(sioc
);
3297 object_ref(OBJECT(sioc
));
3299 object_ref(OBJECT(sioc
));
3301 qio_channel_set_blocking(s
->ioc
, false, NULL
);
3303 if (s
->do_nodelay
) {
3304 qio_channel_set_delay(s
->ioc
, false);
3306 if (s
->listen_tag
) {
3307 g_source_remove(s
->listen_tag
);
3312 tcp_chr_tls_init(chr
);
3314 if (s
->do_telnetopt
) {
3315 tcp_chr_telnet_init(chr
);
3317 tcp_chr_connect(chr
);
3325 static int tcp_chr_add_client(CharDriverState
*chr
, int fd
)
3328 QIOChannelSocket
*sioc
;
3330 sioc
= qio_channel_socket_new_fd(fd
, NULL
);
3334 ret
= tcp_chr_new_client(chr
, sioc
);
3335 object_unref(OBJECT(sioc
));
3339 static gboolean
tcp_chr_accept(QIOChannel
*channel
,
3343 CharDriverState
*chr
= opaque
;
3344 QIOChannelSocket
*sioc
;
3346 sioc
= qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel
),
3352 tcp_chr_new_client(chr
, sioc
);
3354 object_unref(OBJECT(sioc
));
3359 static int tcp_chr_wait_connected(CharDriverState
*chr
, Error
**errp
)
3361 TCPCharDriver
*s
= chr
->opaque
;
3362 QIOChannelSocket
*sioc
;
3364 /* It can't wait on s->connected, since it is set asynchronously
3365 * in TLS and telnet cases, only wait for an accepted socket */
3368 fprintf(stderr
, "QEMU waiting for connection on: %s\n",
3370 qio_channel_set_blocking(QIO_CHANNEL(s
->listen_ioc
), true, NULL
);
3371 tcp_chr_accept(QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
, chr
);
3372 qio_channel_set_blocking(QIO_CHANNEL(s
->listen_ioc
), false, NULL
);
3374 sioc
= qio_channel_socket_new();
3375 if (qio_channel_socket_connect_sync(sioc
, s
->addr
, errp
) < 0) {
3376 object_unref(OBJECT(sioc
));
3379 tcp_chr_new_client(chr
, sioc
);
3380 object_unref(OBJECT(sioc
));
3387 static int qemu_chr_wait_connected(CharDriverState
*chr
, Error
**errp
)
3389 if (chr
->chr_wait_connected
) {
3390 return chr
->chr_wait_connected(chr
, errp
);
3396 int qemu_chr_fe_wait_connected(CharBackend
*be
, Error
**errp
)
3399 error_setg(errp
, "missing associated backend");
3403 return qemu_chr_wait_connected(be
->chr
, errp
);
3406 static void tcp_chr_free(CharDriverState
*chr
)
3408 TCPCharDriver
*s
= chr
->opaque
;
3410 tcp_chr_free_connection(chr
);
3412 if (s
->reconnect_timer
) {
3413 g_source_remove(s
->reconnect_timer
);
3414 s
->reconnect_timer
= 0;
3416 qapi_free_SocketAddress(s
->addr
);
3417 if (s
->listen_tag
) {
3418 g_source_remove(s
->listen_tag
);
3421 if (s
->listen_ioc
) {
3422 object_unref(OBJECT(s
->listen_ioc
));
3425 object_unref(OBJECT(s
->tls_creds
));
3428 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
3432 static void qemu_chr_socket_connected(Object
*src
, Error
*err
, void *opaque
)
3434 QIOChannelSocket
*sioc
= QIO_CHANNEL_SOCKET(src
);
3435 CharDriverState
*chr
= opaque
;
3436 TCPCharDriver
*s
= chr
->opaque
;
3439 check_report_connect_error(chr
, err
);
3444 s
->connect_err_reported
= false;
3445 tcp_chr_new_client(chr
, sioc
);
3446 object_unref(OBJECT(sioc
));
3450 /*********************************************************/
3451 /* Ring buffer chardev */
3458 } RingBufCharDriver
;
3460 static size_t ringbuf_count(const CharDriverState
*chr
)
3462 const RingBufCharDriver
*d
= chr
->opaque
;
3464 return d
->prod
- d
->cons
;
3467 /* Called with chr_write_lock held. */
3468 static int ringbuf_chr_write(CharDriverState
*chr
, const uint8_t *buf
, int len
)
3470 RingBufCharDriver
*d
= chr
->opaque
;
3473 if (!buf
|| (len
< 0)) {
3477 for (i
= 0; i
< len
; i
++ ) {
3478 d
->cbuf
[d
->prod
++ & (d
->size
- 1)] = buf
[i
];
3479 if (d
->prod
- d
->cons
> d
->size
) {
3480 d
->cons
= d
->prod
- d
->size
;
3487 static int ringbuf_chr_read(CharDriverState
*chr
, uint8_t *buf
, int len
)
3489 RingBufCharDriver
*d
= chr
->opaque
;
3492 qemu_mutex_lock(&chr
->chr_write_lock
);
3493 for (i
= 0; i
< len
&& d
->cons
!= d
->prod
; i
++) {
3494 buf
[i
] = d
->cbuf
[d
->cons
++ & (d
->size
- 1)];
3496 qemu_mutex_unlock(&chr
->chr_write_lock
);
3501 static void ringbuf_chr_free(struct CharDriverState
*chr
)
3503 RingBufCharDriver
*d
= chr
->opaque
;
3510 static CharDriverState
*qemu_chr_open_ringbuf(const char *id
,
3511 ChardevBackend
*backend
,
3515 ChardevRingbuf
*opts
= backend
->u
.ringbuf
.data
;
3516 ChardevCommon
*common
= qapi_ChardevRingbuf_base(opts
);
3517 CharDriverState
*chr
;
3518 RingBufCharDriver
*d
;
3520 chr
= qemu_chr_alloc(common
, errp
);
3524 d
= g_malloc(sizeof(*d
));
3526 d
->size
= opts
->has_size
? opts
->size
: 65536;
3528 /* The size must be power of 2 */
3529 if (d
->size
& (d
->size
- 1)) {
3530 error_setg(errp
, "size of ringbuf chardev must be power of two");
3536 d
->cbuf
= g_malloc0(d
->size
);
3539 chr
->chr_write
= ringbuf_chr_write
;
3540 chr
->chr_free
= ringbuf_chr_free
;
3546 qemu_chr_free_common(chr
);
3550 bool chr_is_ringbuf(const CharDriverState
*chr
)
3552 return chr
->chr_write
== ringbuf_chr_write
;
3555 void qmp_ringbuf_write(const char *device
, const char *data
,
3556 bool has_format
, enum DataFormat format
,
3559 CharDriverState
*chr
;
3560 const uint8_t *write_data
;
3564 chr
= qemu_chr_find(device
);
3566 error_setg(errp
, "Device '%s' not found", device
);
3570 if (!chr_is_ringbuf(chr
)) {
3571 error_setg(errp
,"%s is not a ringbuf device", device
);
3575 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3576 write_data
= qbase64_decode(data
, -1,
3583 write_data
= (uint8_t *)data
;
3584 write_count
= strlen(data
);
3587 ret
= ringbuf_chr_write(chr
, write_data
, write_count
);
3589 if (write_data
!= (uint8_t *)data
) {
3590 g_free((void *)write_data
);
3594 error_setg(errp
, "Failed to write to device %s", device
);
3599 char *qmp_ringbuf_read(const char *device
, int64_t size
,
3600 bool has_format
, enum DataFormat format
,
3603 CharDriverState
*chr
;
3608 chr
= qemu_chr_find(device
);
3610 error_setg(errp
, "Device '%s' not found", device
);
3614 if (!chr_is_ringbuf(chr
)) {
3615 error_setg(errp
,"%s is not a ringbuf device", device
);
3620 error_setg(errp
, "size must be greater than zero");
3624 count
= ringbuf_count(chr
);
3625 size
= size
> count
? count
: size
;
3626 read_data
= g_malloc(size
+ 1);
3628 ringbuf_chr_read(chr
, read_data
, size
);
3630 if (has_format
&& (format
== DATA_FORMAT_BASE64
)) {
3631 data
= g_base64_encode(read_data
, size
);
3635 * FIXME should read only complete, valid UTF-8 characters up
3636 * to @size bytes. Invalid sequences should be replaced by a
3637 * suitable replacement character. Except when (and only
3638 * when) ring buffer lost characters since last read, initial
3639 * continuation characters should be dropped.
3641 read_data
[size
] = 0;
3642 data
= (char *)read_data
;
3648 QemuOpts
*qemu_chr_parse_compat(const char *label
, const char *filename
)
3650 char host
[65], port
[33], width
[8], height
[8];
3654 Error
*local_err
= NULL
;
3656 opts
= qemu_opts_create(qemu_find_opts("chardev"), label
, 1, &local_err
);
3658 error_report_err(local_err
);
3662 if (strstart(filename
, "mon:", &p
)) {
3664 qemu_opt_set(opts
, "mux", "on", &error_abort
);
3665 if (strcmp(filename
, "stdio") == 0) {
3666 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3667 * but pass it to the guest. Handle this only for compat syntax,
3668 * for -chardev syntax we have special option for this.
3669 * This is what -nographic did, redirecting+muxing serial+monitor
3670 * to stdio causing Ctrl+C to be passed to guest. */
3671 qemu_opt_set(opts
, "signal", "off", &error_abort
);
3675 if (strcmp(filename
, "null") == 0 ||
3676 strcmp(filename
, "pty") == 0 ||
3677 strcmp(filename
, "msmouse") == 0 ||
3678 strcmp(filename
, "braille") == 0 ||
3679 strcmp(filename
, "testdev") == 0 ||
3680 strcmp(filename
, "stdio") == 0) {
3681 qemu_opt_set(opts
, "backend", filename
, &error_abort
);
3684 if (strstart(filename
, "vc", &p
)) {
3685 qemu_opt_set(opts
, "backend", "vc", &error_abort
);
3687 if (sscanf(p
+1, "%7[0-9]x%7[0-9]", width
, height
) == 2) {
3689 qemu_opt_set(opts
, "width", width
, &error_abort
);
3690 qemu_opt_set(opts
, "height", height
, &error_abort
);
3691 } else if (sscanf(p
+1, "%7[0-9]Cx%7[0-9]C", width
, height
) == 2) {
3693 qemu_opt_set(opts
, "cols", width
, &error_abort
);
3694 qemu_opt_set(opts
, "rows", height
, &error_abort
);
3701 if (strcmp(filename
, "con:") == 0) {
3702 qemu_opt_set(opts
, "backend", "console", &error_abort
);
3705 if (strstart(filename
, "COM", NULL
)) {
3706 qemu_opt_set(opts
, "backend", "serial", &error_abort
);
3707 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3710 if (strstart(filename
, "file:", &p
)) {
3711 qemu_opt_set(opts
, "backend", "file", &error_abort
);
3712 qemu_opt_set(opts
, "path", p
, &error_abort
);
3715 if (strstart(filename
, "pipe:", &p
)) {
3716 qemu_opt_set(opts
, "backend", "pipe", &error_abort
);
3717 qemu_opt_set(opts
, "path", p
, &error_abort
);
3720 if (strstart(filename
, "tcp:", &p
) ||
3721 strstart(filename
, "telnet:", &p
)) {
3722 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3724 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1)
3727 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3728 qemu_opt_set(opts
, "host", host
, &error_abort
);
3729 qemu_opt_set(opts
, "port", port
, &error_abort
);
3730 if (p
[pos
] == ',') {
3731 qemu_opts_do_parse(opts
, p
+pos
+1, NULL
, &local_err
);
3733 error_report_err(local_err
);
3737 if (strstart(filename
, "telnet:", &p
))
3738 qemu_opt_set(opts
, "telnet", "on", &error_abort
);
3741 if (strstart(filename
, "udp:", &p
)) {
3742 qemu_opt_set(opts
, "backend", "udp", &error_abort
);
3743 if (sscanf(p
, "%64[^:]:%32[^@,]%n", host
, port
, &pos
) < 2) {
3745 if (sscanf(p
, ":%32[^@,]%n", port
, &pos
) < 1) {
3749 qemu_opt_set(opts
, "host", host
, &error_abort
);
3750 qemu_opt_set(opts
, "port", port
, &error_abort
);
3751 if (p
[pos
] == '@') {
3753 if (sscanf(p
, "%64[^:]:%32[^,]%n", host
, port
, &pos
) < 2) {
3755 if (sscanf(p
, ":%32[^,]%n", port
, &pos
) < 1) {
3759 qemu_opt_set(opts
, "localaddr", host
, &error_abort
);
3760 qemu_opt_set(opts
, "localport", port
, &error_abort
);
3764 if (strstart(filename
, "unix:", &p
)) {
3765 qemu_opt_set(opts
, "backend", "socket", &error_abort
);
3766 qemu_opts_do_parse(opts
, p
, "path", &local_err
);
3768 error_report_err(local_err
);
3773 if (strstart(filename
, "/dev/parport", NULL
) ||
3774 strstart(filename
, "/dev/ppi", NULL
)) {
3775 qemu_opt_set(opts
, "backend", "parport", &error_abort
);
3776 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3779 if (strstart(filename
, "/dev/", NULL
)) {
3780 qemu_opt_set(opts
, "backend", "tty", &error_abort
);
3781 qemu_opt_set(opts
, "path", filename
, &error_abort
);
3786 qemu_opts_del(opts
);
3790 void qemu_chr_parse_common(QemuOpts
*opts
, ChardevCommon
*backend
)
3792 const char *logfile
= qemu_opt_get(opts
, "logfile");
3794 backend
->has_logfile
= logfile
!= NULL
;
3795 backend
->logfile
= logfile
? g_strdup(logfile
) : NULL
;
3797 backend
->has_logappend
= true;
3798 backend
->logappend
= qemu_opt_get_bool(opts
, "logappend", false);
3802 static void qemu_chr_parse_file_out(QemuOpts
*opts
, ChardevBackend
*backend
,
3805 const char *path
= qemu_opt_get(opts
, "path");
3809 error_setg(errp
, "chardev: file: no filename given");
3812 file
= backend
->u
.file
.data
= g_new0(ChardevFile
, 1);
3813 qemu_chr_parse_common(opts
, qapi_ChardevFile_base(file
));
3814 file
->out
= g_strdup(path
);
3816 file
->has_append
= true;
3817 file
->append
= qemu_opt_get_bool(opts
, "append", false);
3820 static void qemu_chr_parse_stdio(QemuOpts
*opts
, ChardevBackend
*backend
,
3823 ChardevStdio
*stdio
;
3825 stdio
= backend
->u
.stdio
.data
= g_new0(ChardevStdio
, 1);
3826 qemu_chr_parse_common(opts
, qapi_ChardevStdio_base(stdio
));
3827 stdio
->has_signal
= true;
3828 stdio
->signal
= qemu_opt_get_bool(opts
, "signal", true);
3831 #ifdef HAVE_CHARDEV_SERIAL
3832 static void qemu_chr_parse_serial(QemuOpts
*opts
, ChardevBackend
*backend
,
3835 const char *device
= qemu_opt_get(opts
, "path");
3836 ChardevHostdev
*serial
;
3838 if (device
== NULL
) {
3839 error_setg(errp
, "chardev: serial/tty: no device path given");
3842 serial
= backend
->u
.serial
.data
= g_new0(ChardevHostdev
, 1);
3843 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(serial
));
3844 serial
->device
= g_strdup(device
);
3848 #ifdef HAVE_CHARDEV_PARPORT
3849 static void qemu_chr_parse_parallel(QemuOpts
*opts
, ChardevBackend
*backend
,
3852 const char *device
= qemu_opt_get(opts
, "path");
3853 ChardevHostdev
*parallel
;
3855 if (device
== NULL
) {
3856 error_setg(errp
, "chardev: parallel: no device path given");
3859 parallel
= backend
->u
.parallel
.data
= g_new0(ChardevHostdev
, 1);
3860 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(parallel
));
3861 parallel
->device
= g_strdup(device
);
3865 static void qemu_chr_parse_pipe(QemuOpts
*opts
, ChardevBackend
*backend
,
3868 const char *device
= qemu_opt_get(opts
, "path");
3869 ChardevHostdev
*dev
;
3871 if (device
== NULL
) {
3872 error_setg(errp
, "chardev: pipe: no device path given");
3875 dev
= backend
->u
.pipe
.data
= g_new0(ChardevHostdev
, 1);
3876 qemu_chr_parse_common(opts
, qapi_ChardevHostdev_base(dev
));
3877 dev
->device
= g_strdup(device
);
3880 static void qemu_chr_parse_ringbuf(QemuOpts
*opts
, ChardevBackend
*backend
,
3884 ChardevRingbuf
*ringbuf
;
3886 ringbuf
= backend
->u
.ringbuf
.data
= g_new0(ChardevRingbuf
, 1);
3887 qemu_chr_parse_common(opts
, qapi_ChardevRingbuf_base(ringbuf
));
3889 val
= qemu_opt_get_size(opts
, "size", 0);
3891 ringbuf
->has_size
= true;
3892 ringbuf
->size
= val
;
3896 static void qemu_chr_parse_mux(QemuOpts
*opts
, ChardevBackend
*backend
,
3899 const char *chardev
= qemu_opt_get(opts
, "chardev");
3902 if (chardev
== NULL
) {
3903 error_setg(errp
, "chardev: mux: no chardev given");
3906 mux
= backend
->u
.mux
.data
= g_new0(ChardevMux
, 1);
3907 qemu_chr_parse_common(opts
, qapi_ChardevMux_base(mux
));
3908 mux
->chardev
= g_strdup(chardev
);
3911 static void qemu_chr_parse_socket(QemuOpts
*opts
, ChardevBackend
*backend
,
3914 bool is_listen
= qemu_opt_get_bool(opts
, "server", false);
3915 bool is_waitconnect
= is_listen
&& qemu_opt_get_bool(opts
, "wait", true);
3916 bool is_telnet
= qemu_opt_get_bool(opts
, "telnet", false);
3917 bool do_nodelay
= !qemu_opt_get_bool(opts
, "delay", true);
3918 int64_t reconnect
= qemu_opt_get_number(opts
, "reconnect", 0);
3919 const char *path
= qemu_opt_get(opts
, "path");
3920 const char *host
= qemu_opt_get(opts
, "host");
3921 const char *port
= qemu_opt_get(opts
, "port");
3922 const char *tls_creds
= qemu_opt_get(opts
, "tls-creds");
3923 SocketAddress
*addr
;
3924 ChardevSocket
*sock
;
3928 error_setg(errp
, "chardev: socket: no host given");
3932 error_setg(errp
, "chardev: socket: no port given");
3937 error_setg(errp
, "TLS can only be used over TCP socket");
3942 sock
= backend
->u
.socket
.data
= g_new0(ChardevSocket
, 1);
3943 qemu_chr_parse_common(opts
, qapi_ChardevSocket_base(sock
));
3945 sock
->has_nodelay
= true;
3946 sock
->nodelay
= do_nodelay
;
3947 sock
->has_server
= true;
3948 sock
->server
= is_listen
;
3949 sock
->has_telnet
= true;
3950 sock
->telnet
= is_telnet
;
3951 sock
->has_wait
= true;
3952 sock
->wait
= is_waitconnect
;
3953 sock
->has_reconnect
= true;
3954 sock
->reconnect
= reconnect
;
3955 sock
->tls_creds
= g_strdup(tls_creds
);
3957 addr
= g_new0(SocketAddress
, 1);
3959 UnixSocketAddress
*q_unix
;
3960 addr
->type
= SOCKET_ADDRESS_KIND_UNIX
;
3961 q_unix
= addr
->u
.q_unix
.data
= g_new0(UnixSocketAddress
, 1);
3962 q_unix
->path
= g_strdup(path
);
3964 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
3965 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
3966 *addr
->u
.inet
.data
= (InetSocketAddress
) {
3967 .host
= g_strdup(host
),
3968 .port
= g_strdup(port
),
3969 .has_to
= qemu_opt_get(opts
, "to"),
3970 .to
= qemu_opt_get_number(opts
, "to", 0),
3971 .has_ipv4
= qemu_opt_get(opts
, "ipv4"),
3972 .ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0),
3973 .has_ipv6
= qemu_opt_get(opts
, "ipv6"),
3974 .ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0),
3980 static void qemu_chr_parse_udp(QemuOpts
*opts
, ChardevBackend
*backend
,
3983 const char *host
= qemu_opt_get(opts
, "host");
3984 const char *port
= qemu_opt_get(opts
, "port");
3985 const char *localaddr
= qemu_opt_get(opts
, "localaddr");
3986 const char *localport
= qemu_opt_get(opts
, "localport");
3987 bool has_local
= false;
3988 SocketAddress
*addr
;
3991 if (host
== NULL
|| strlen(host
) == 0) {
3994 if (port
== NULL
|| strlen(port
) == 0) {
3995 error_setg(errp
, "chardev: udp: remote port not specified");
3998 if (localport
== NULL
|| strlen(localport
) == 0) {
4003 if (localaddr
== NULL
|| strlen(localaddr
) == 0) {
4009 udp
= backend
->u
.udp
.data
= g_new0(ChardevUdp
, 1);
4010 qemu_chr_parse_common(opts
, qapi_ChardevUdp_base(udp
));
4012 addr
= g_new0(SocketAddress
, 1);
4013 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
4014 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
4015 *addr
->u
.inet
.data
= (InetSocketAddress
) {
4016 .host
= g_strdup(host
),
4017 .port
= g_strdup(port
),
4018 .has_ipv4
= qemu_opt_get(opts
, "ipv4"),
4019 .ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0),
4020 .has_ipv6
= qemu_opt_get(opts
, "ipv6"),
4021 .ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0),
4026 udp
->has_local
= true;
4027 addr
= g_new0(SocketAddress
, 1);
4028 addr
->type
= SOCKET_ADDRESS_KIND_INET
;
4029 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
4030 *addr
->u
.inet
.data
= (InetSocketAddress
) {
4031 .host
= g_strdup(localaddr
),
4032 .port
= g_strdup(localport
),
4038 typedef struct CharDriver
{
4040 ChardevBackendKind kind
;
4041 void (*parse
)(QemuOpts
*opts
, ChardevBackend
*backend
, Error
**errp
);
4042 CharDriverState
*(*create
)(const char *id
, ChardevBackend
*backend
,
4043 ChardevReturn
*ret
, Error
**errp
);
4046 static GSList
*backends
;
4048 void register_char_driver(const char *name
, ChardevBackendKind kind
,
4049 void (*parse
)(QemuOpts
*opts
, ChardevBackend
*backend
, Error
**errp
),
4050 CharDriverState
*(*create
)(const char *id
, ChardevBackend
*backend
,
4051 ChardevReturn
*ret
, Error
**errp
))
4055 s
= g_malloc0(sizeof(*s
));
4056 s
->name
= g_strdup(name
);
4061 backends
= g_slist_append(backends
, s
);
4064 CharDriverState
*qemu_chr_new_from_opts(QemuOpts
*opts
,
4067 Error
*local_err
= NULL
;
4069 CharDriverState
*chr
;
4071 ChardevReturn
*ret
= NULL
;
4072 ChardevBackend
*backend
;
4073 const char *id
= qemu_opts_id(opts
);
4076 if (qemu_opt_get(opts
, "backend") == NULL
) {
4077 error_setg(errp
, "chardev: \"%s\" missing backend",
4078 qemu_opts_id(opts
));
4082 if (is_help_option(qemu_opt_get(opts
, "backend"))) {
4083 fprintf(stderr
, "Available chardev backend types:\n");
4084 for (i
= backends
; i
; i
= i
->next
) {
4086 fprintf(stderr
, "%s\n", cd
->name
);
4088 exit(!is_help_option(qemu_opt_get(opts
, "backend")));
4092 error_setg(errp
, "chardev: no id specified");
4096 for (i
= backends
; i
; i
= i
->next
) {
4099 if (strcmp(cd
->name
, qemu_opt_get(opts
, "backend")) == 0) {
4104 error_setg(errp
, "chardev: backend \"%s\" not found",
4105 qemu_opt_get(opts
, "backend"));
4109 backend
= g_new0(ChardevBackend
, 1);
4111 if (qemu_opt_get_bool(opts
, "mux", 0)) {
4112 bid
= g_strdup_printf("%s-base", id
);
4116 backend
->type
= cd
->kind
;
4118 cd
->parse(opts
, backend
, &local_err
);
4120 error_propagate(errp
, local_err
);
4124 ChardevCommon
*cc
= g_new0(ChardevCommon
, 1);
4125 qemu_chr_parse_common(opts
, cc
);
4126 backend
->u
.null
.data
= cc
; /* Any ChardevCommon member would work */
4129 ret
= qmp_chardev_add(bid
? bid
: id
, backend
, errp
);
4135 qapi_free_ChardevBackend(backend
);
4136 qapi_free_ChardevReturn(ret
);
4137 backend
= g_new0(ChardevBackend
, 1);
4138 backend
->u
.mux
.data
= g_new0(ChardevMux
, 1);
4139 backend
->type
= CHARDEV_BACKEND_KIND_MUX
;
4140 backend
->u
.mux
.data
->chardev
= g_strdup(bid
);
4141 ret
= qmp_chardev_add(id
, backend
, errp
);
4143 chr
= qemu_chr_find(bid
);
4144 qemu_chr_delete(chr
);
4150 chr
= qemu_chr_find(id
);
4153 qapi_free_ChardevBackend(backend
);
4154 qapi_free_ChardevReturn(ret
);
4162 CharDriverState
*qemu_chr_new_noreplay(const char *label
, const char *filename
)
4165 CharDriverState
*chr
;
4169 if (strstart(filename
, "chardev:", &p
)) {
4170 return qemu_chr_find(p
);
4173 opts
= qemu_chr_parse_compat(label
, filename
);
4177 chr
= qemu_chr_new_from_opts(opts
, &err
);
4179 error_report_err(err
);
4181 if (chr
&& qemu_opt_get_bool(opts
, "mux", 0)) {
4182 monitor_init(chr
, MONITOR_USE_READLINE
);
4184 qemu_opts_del(opts
);
4188 CharDriverState
*qemu_chr_new(const char *label
, const char *filename
)
4190 CharDriverState
*chr
;
4191 chr
= qemu_chr_new_noreplay(label
, filename
);
4193 chr
->replay
= replay_mode
!= REPLAY_MODE_NONE
;
4194 if (chr
->replay
&& chr
->chr_ioctl
) {
4196 "Replay: ioctl is not supported for serial devices yet\n");
4198 replay_register_char_driver(chr
);
4203 void qemu_chr_fe_set_echo(CharBackend
*be
, bool echo
)
4205 CharDriverState
*chr
= be
->chr
;
4207 if (chr
&& chr
->chr_set_echo
) {
4208 chr
->chr_set_echo(chr
, echo
);
4212 void qemu_chr_fe_set_open(CharBackend
*be
, int fe_open
)
4214 CharDriverState
*chr
= be
->chr
;
4220 if (be
->fe_open
== fe_open
) {
4223 be
->fe_open
= fe_open
;
4224 if (chr
->chr_set_fe_open
) {
4225 chr
->chr_set_fe_open(chr
, fe_open
);
4229 void qemu_chr_fe_event(CharBackend
*be
, int event
)
4231 CharDriverState
*chr
= be
->chr
;
4233 if (chr
&& chr
->chr_fe_event
) {
4234 chr
->chr_fe_event(chr
, event
);
4238 guint
qemu_chr_fe_add_watch(CharBackend
*be
, GIOCondition cond
,
4239 GIOFunc func
, void *user_data
)
4241 CharDriverState
*s
= be
->chr
;
4245 if (!s
|| s
->chr_add_watch
== NULL
) {
4249 src
= s
->chr_add_watch(s
, cond
);
4254 g_source_set_callback(src
, (GSourceFunc
)func
, user_data
, NULL
);
4255 tag
= g_source_attach(src
, NULL
);
4256 g_source_unref(src
);
4261 void qemu_chr_fe_disconnect(CharBackend
*be
)
4263 CharDriverState
*chr
= be
->chr
;
4265 if (chr
&& chr
->chr_disconnect
) {
4266 chr
->chr_disconnect(chr
);
4270 static void qemu_chr_free_common(CharDriverState
*chr
)
4273 chr
->be
->chr
= NULL
;
4275 g_free(chr
->filename
);
4277 if (chr
->logfd
!= -1) {
4280 qemu_mutex_destroy(&chr
->chr_write_lock
);
4284 void qemu_chr_free(CharDriverState
*chr
)
4286 if (chr
->chr_free
) {
4289 qemu_chr_free_common(chr
);
4292 void qemu_chr_delete(CharDriverState
*chr
)
4294 QTAILQ_REMOVE(&chardevs
, chr
, next
);
4298 ChardevInfoList
*qmp_query_chardev(Error
**errp
)
4300 ChardevInfoList
*chr_list
= NULL
;
4301 CharDriverState
*chr
;
4303 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
4304 ChardevInfoList
*info
= g_malloc0(sizeof(*info
));
4305 info
->value
= g_malloc0(sizeof(*info
->value
));
4306 info
->value
->label
= g_strdup(chr
->label
);
4307 info
->value
->filename
= g_strdup(chr
->filename
);
4308 info
->value
->frontend_open
= chr
->be
&& chr
->be
->fe_open
;
4310 info
->next
= chr_list
;
4317 ChardevBackendInfoList
*qmp_query_chardev_backends(Error
**errp
)
4319 ChardevBackendInfoList
*backend_list
= NULL
;
4320 CharDriver
*c
= NULL
;
4323 for (i
= backends
; i
; i
= i
->next
) {
4324 ChardevBackendInfoList
*info
= g_malloc0(sizeof(*info
));
4326 info
->value
= g_malloc0(sizeof(*info
->value
));
4327 info
->value
->name
= g_strdup(c
->name
);
4329 info
->next
= backend_list
;
4330 backend_list
= info
;
4333 return backend_list
;
4336 CharDriverState
*qemu_chr_find(const char *name
)
4338 CharDriverState
*chr
;
4340 QTAILQ_FOREACH(chr
, &chardevs
, next
) {
4341 if (strcmp(chr
->label
, name
) != 0)
4348 QemuOptsList qemu_chardev_opts
= {
4350 .implied_opt_name
= "backend",
4351 .head
= QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts
.head
),
4355 .type
= QEMU_OPT_STRING
,
4358 .type
= QEMU_OPT_STRING
,
4361 .type
= QEMU_OPT_STRING
,
4364 .type
= QEMU_OPT_STRING
,
4366 .name
= "localaddr",
4367 .type
= QEMU_OPT_STRING
,
4369 .name
= "localport",
4370 .type
= QEMU_OPT_STRING
,
4373 .type
= QEMU_OPT_NUMBER
,
4376 .type
= QEMU_OPT_BOOL
,
4379 .type
= QEMU_OPT_BOOL
,
4382 .type
= QEMU_OPT_BOOL
,
4385 .type
= QEMU_OPT_BOOL
,
4388 .type
= QEMU_OPT_BOOL
,
4390 .name
= "reconnect",
4391 .type
= QEMU_OPT_NUMBER
,
4394 .type
= QEMU_OPT_BOOL
,
4396 .name
= "tls-creds",
4397 .type
= QEMU_OPT_STRING
,
4400 .type
= QEMU_OPT_NUMBER
,
4403 .type
= QEMU_OPT_NUMBER
,
4406 .type
= QEMU_OPT_NUMBER
,
4409 .type
= QEMU_OPT_NUMBER
,
4412 .type
= QEMU_OPT_BOOL
,
4415 .type
= QEMU_OPT_BOOL
,
4418 .type
= QEMU_OPT_STRING
,
4421 .type
= QEMU_OPT_NUMBER
,
4424 .type
= QEMU_OPT_SIZE
,
4427 .type
= QEMU_OPT_STRING
,
4430 .type
= QEMU_OPT_BOOL
,
4433 .type
= QEMU_OPT_STRING
,
4435 .name
= "logappend",
4436 .type
= QEMU_OPT_BOOL
,
4438 { /* end of list */ }
4444 static CharDriverState
*qmp_chardev_open_file(const char *id
,
4445 ChardevBackend
*backend
,
4449 ChardevFile
*file
= backend
->u
.file
.data
;
4450 ChardevCommon
*common
= qapi_ChardevFile_base(file
);
4456 error_setg(errp
, "input file not supported");
4460 if (file
->has_append
&& file
->append
) {
4461 /* Append to file if it already exists. */
4462 accessmode
= FILE_GENERIC_WRITE
& ~FILE_WRITE_DATA
;
4463 flags
= OPEN_ALWAYS
;
4465 /* Truncate file if it already exists. */
4466 accessmode
= GENERIC_WRITE
;
4467 flags
= CREATE_ALWAYS
;
4470 out
= CreateFile(file
->out
, accessmode
, FILE_SHARE_READ
, NULL
, flags
,
4471 FILE_ATTRIBUTE_NORMAL
, NULL
);
4472 if (out
== INVALID_HANDLE_VALUE
) {
4473 error_setg(errp
, "open %s failed", file
->out
);
4476 return qemu_chr_open_win_file(out
, common
, errp
);
4479 static CharDriverState
*qmp_chardev_open_serial(const char *id
,
4480 ChardevBackend
*backend
,
4484 ChardevHostdev
*serial
= backend
->u
.serial
.data
;
4485 ChardevCommon
*common
= qapi_ChardevHostdev_base(serial
);
4486 return qemu_chr_open_win_path(serial
->device
, common
, errp
);
4491 static int qmp_chardev_open_file_source(char *src
, int flags
,
4496 TFR(fd
= qemu_open(src
, flags
, 0666));
4498 error_setg_file_open(errp
, errno
, src
);
4503 static CharDriverState
*qmp_chardev_open_file(const char *id
,
4504 ChardevBackend
*backend
,
4508 ChardevFile
*file
= backend
->u
.file
.data
;
4509 ChardevCommon
*common
= qapi_ChardevFile_base(file
);
4510 int flags
, in
= -1, out
;
4512 flags
= O_WRONLY
| O_CREAT
| O_BINARY
;
4513 if (file
->has_append
&& file
->append
) {
4519 out
= qmp_chardev_open_file_source(file
->out
, flags
, errp
);
4526 in
= qmp_chardev_open_file_source(file
->in
, flags
, errp
);
4533 return qemu_chr_open_fd(in
, out
, common
, errp
);
4536 #ifdef HAVE_CHARDEV_SERIAL
4537 static CharDriverState
*qmp_chardev_open_serial(const char *id
,
4538 ChardevBackend
*backend
,
4542 ChardevHostdev
*serial
= backend
->u
.serial
.data
;
4543 ChardevCommon
*common
= qapi_ChardevHostdev_base(serial
);
4546 fd
= qmp_chardev_open_file_source(serial
->device
, O_RDWR
, errp
);
4550 qemu_set_nonblock(fd
);
4551 return qemu_chr_open_tty_fd(fd
, common
, errp
);
4555 #ifdef HAVE_CHARDEV_PARPORT
4556 static CharDriverState
*qmp_chardev_open_parallel(const char *id
,
4557 ChardevBackend
*backend
,
4561 ChardevHostdev
*parallel
= backend
->u
.parallel
.data
;
4562 ChardevCommon
*common
= qapi_ChardevHostdev_base(parallel
);
4565 fd
= qmp_chardev_open_file_source(parallel
->device
, O_RDWR
, errp
);
4569 return qemu_chr_open_pp_fd(fd
, common
, errp
);
4575 static gboolean
socket_reconnect_timeout(gpointer opaque
)
4577 CharDriverState
*chr
= opaque
;
4578 TCPCharDriver
*s
= chr
->opaque
;
4579 QIOChannelSocket
*sioc
;
4581 s
->reconnect_timer
= 0;
4587 sioc
= qio_channel_socket_new();
4588 qio_channel_socket_connect_async(sioc
, s
->addr
,
4589 qemu_chr_socket_connected
,
4595 static CharDriverState
*qmp_chardev_open_socket(const char *id
,
4596 ChardevBackend
*backend
,
4600 CharDriverState
*chr
;
4602 ChardevSocket
*sock
= backend
->u
.socket
.data
;
4603 SocketAddress
*addr
= sock
->addr
;
4604 bool do_nodelay
= sock
->has_nodelay
? sock
->nodelay
: false;
4605 bool is_listen
= sock
->has_server
? sock
->server
: true;
4606 bool is_telnet
= sock
->has_telnet
? sock
->telnet
: false;
4607 bool is_waitconnect
= sock
->has_wait
? sock
->wait
: false;
4608 int64_t reconnect
= sock
->has_reconnect
? sock
->reconnect
: 0;
4609 ChardevCommon
*common
= qapi_ChardevSocket_base(sock
);
4610 QIOChannelSocket
*sioc
= NULL
;
4612 chr
= qemu_chr_alloc(common
, errp
);
4616 s
= g_new0(TCPCharDriver
, 1);
4618 s
->is_unix
= addr
->type
== SOCKET_ADDRESS_KIND_UNIX
;
4619 s
->is_listen
= is_listen
;
4620 s
->is_telnet
= is_telnet
;
4621 s
->do_nodelay
= do_nodelay
;
4622 if (sock
->tls_creds
) {
4624 creds
= object_resolve_path_component(
4625 object_get_objects_root(), sock
->tls_creds
);
4627 error_setg(errp
, "No TLS credentials with id '%s'",
4631 s
->tls_creds
= (QCryptoTLSCreds
*)
4632 object_dynamic_cast(creds
,
4633 TYPE_QCRYPTO_TLS_CREDS
);
4634 if (!s
->tls_creds
) {
4635 error_setg(errp
, "Object with id '%s' is not TLS credentials",
4639 object_ref(OBJECT(s
->tls_creds
));
4641 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_SERVER
) {
4642 error_setg(errp
, "%s",
4643 "Expected TLS credentials for server endpoint");
4647 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT
) {
4648 error_setg(errp
, "%s",
4649 "Expected TLS credentials for client endpoint");
4655 s
->addr
= QAPI_CLONE(SocketAddress
, sock
->addr
);
4657 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_RECONNECTABLE
);
4659 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_FD_PASS
);
4663 chr
->chr_wait_connected
= tcp_chr_wait_connected
;
4664 chr
->chr_write
= tcp_chr_write
;
4665 chr
->chr_sync_read
= tcp_chr_sync_read
;
4666 chr
->chr_free
= tcp_chr_free
;
4667 chr
->chr_disconnect
= tcp_chr_disconnect
;
4668 chr
->get_msgfds
= tcp_get_msgfds
;
4669 chr
->set_msgfds
= tcp_set_msgfds
;
4670 chr
->chr_add_client
= tcp_chr_add_client
;
4671 chr
->chr_add_watch
= tcp_chr_add_watch
;
4672 chr
->chr_update_read_handler
= tcp_chr_update_read_handler
;
4673 /* be isn't opened until we get a connection */
4674 chr
->explicit_be_open
= true;
4676 chr
->filename
= SocketAddress_to_str("disconnected:",
4677 addr
, is_listen
, is_telnet
);
4681 s
->do_telnetopt
= 1;
4683 } else if (reconnect
> 0) {
4684 s
->reconnect_time
= reconnect
;
4687 if (s
->reconnect_time
) {
4688 sioc
= qio_channel_socket_new();
4689 qio_channel_socket_connect_async(sioc
, s
->addr
,
4690 qemu_chr_socket_connected
,
4694 sioc
= qio_channel_socket_new();
4695 if (qio_channel_socket_listen_sync(sioc
, s
->addr
, errp
) < 0) {
4698 s
->listen_ioc
= sioc
;
4699 if (is_waitconnect
&&
4700 qemu_chr_wait_connected(chr
, errp
) < 0) {
4704 s
->listen_tag
= qio_channel_add_watch(
4705 QIO_CHANNEL(s
->listen_ioc
), G_IO_IN
,
4706 tcp_chr_accept
, chr
, NULL
);
4708 } else if (qemu_chr_wait_connected(chr
, errp
) < 0) {
4717 object_unref(OBJECT(sioc
));
4720 object_unref(OBJECT(s
->tls_creds
));
4723 qemu_chr_free_common(chr
);
4727 static CharDriverState
*qmp_chardev_open_udp(const char *id
,
4728 ChardevBackend
*backend
,
4732 ChardevUdp
*udp
= backend
->u
.udp
.data
;
4733 ChardevCommon
*common
= qapi_ChardevUdp_base(udp
);
4734 QIOChannelSocket
*sioc
= qio_channel_socket_new();
4736 if (qio_channel_socket_dgram_sync(sioc
,
4737 udp
->local
, udp
->remote
,
4739 object_unref(OBJECT(sioc
));
4742 return qemu_chr_open_udp(sioc
, common
, errp
);
4746 bool qemu_chr_has_feature(CharDriverState
*chr
,
4747 CharDriverFeature feature
)
4749 return test_bit(feature
, chr
->features
);
4752 void qemu_chr_set_feature(CharDriverState
*chr
,
4753 CharDriverFeature feature
)
4755 return set_bit(feature
, chr
->features
);
4758 ChardevReturn
*qmp_chardev_add(const char *id
, ChardevBackend
*backend
,
4761 ChardevReturn
*ret
= g_new0(ChardevReturn
, 1);
4762 CharDriverState
*chr
= NULL
;
4763 Error
*local_err
= NULL
;
4767 chr
= qemu_chr_find(id
);
4769 error_setg(errp
, "Chardev '%s' already exists", id
);
4774 for (i
= backends
; i
; i
= i
->next
) {
4777 if (cd
->kind
== backend
->type
) {
4778 chr
= cd
->create(id
, backend
, ret
, &local_err
);
4780 error_propagate(errp
, local_err
);
4789 error_setg(errp
, "chardev backend not available");
4793 chr
->label
= g_strdup(id
);
4794 chr
->avail_connections
=
4795 (backend
->type
== CHARDEV_BACKEND_KIND_MUX
) ? MAX_MUX
: 1;
4796 if (!chr
->filename
) {
4797 chr
->filename
= g_strdup(ChardevBackendKind_lookup
[backend
->type
]);
4799 if (!chr
->explicit_be_open
) {
4800 qemu_chr_be_event(chr
, CHR_EVENT_OPENED
);
4802 QTAILQ_INSERT_TAIL(&chardevs
, chr
, next
);
4810 void qmp_chardev_remove(const char *id
, Error
**errp
)
4812 CharDriverState
*chr
;
4814 chr
= qemu_chr_find(id
);
4816 error_setg(errp
, "Chardev '%s' not found", id
);
4819 if (qemu_chr_is_busy(chr
)) {
4820 error_setg(errp
, "Chardev '%s' is busy", id
);
4825 "Chardev '%s' cannot be unplugged in record/replay mode", id
);
4828 qemu_chr_delete(chr
);
4831 void qemu_chr_cleanup(void)
4833 CharDriverState
*chr
, *tmp
;
4835 QTAILQ_FOREACH_SAFE(chr
, &chardevs
, next
, tmp
) {
4836 qemu_chr_delete(chr
);
4840 static void register_types(void)
4842 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL
, NULL
,
4843 qemu_chr_open_null
);
4844 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET
,
4845 qemu_chr_parse_socket
, qmp_chardev_open_socket
);
4846 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP
, qemu_chr_parse_udp
,
4847 qmp_chardev_open_udp
);
4848 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF
,
4849 qemu_chr_parse_ringbuf
, qemu_chr_open_ringbuf
);
4850 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE
,
4851 qemu_chr_parse_file_out
, qmp_chardev_open_file
);
4852 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO
,
4853 qemu_chr_parse_stdio
, qemu_chr_open_stdio
);
4854 #if defined HAVE_CHARDEV_SERIAL
4855 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL
,
4856 qemu_chr_parse_serial
, qmp_chardev_open_serial
);
4857 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL
,
4858 qemu_chr_parse_serial
, qmp_chardev_open_serial
);
4860 #ifdef HAVE_CHARDEV_PARPORT
4861 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL
,
4862 qemu_chr_parse_parallel
, qmp_chardev_open_parallel
);
4863 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL
,
4864 qemu_chr_parse_parallel
, qmp_chardev_open_parallel
);
4866 #ifdef HAVE_CHARDEV_PTY
4867 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY
, NULL
,
4871 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE
, NULL
,
4872 qemu_chr_open_win_con
);
4874 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE
,
4875 qemu_chr_parse_pipe
, qemu_chr_open_pipe
);
4876 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX
, qemu_chr_parse_mux
,
4878 /* Bug-compatibility: */
4879 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY
,
4880 qemu_chr_parse_ringbuf
, qemu_chr_open_ringbuf
);
4881 /* this must be done after machine init, since we register FEs with muxes
4882 * as part of realize functions like serial_isa_realizefn when -nographic
4885 qemu_add_machine_init_done_notifier(&muxes_realize_notify
);
4888 type_init(register_types
);