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1
/*
2
 * QEMU System Emulator
3
 *
4
 * Copyright (c) 2003-2008 Fabrice Bellard
5
 *
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:
12
 *
13
 * The above copyright notice and this permission notice shall be included in
14
 * all copies or substantial portions of the Software.
15
 *
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
22
 * THE SOFTWARE.
23
 */
24
#include "qemu-common.h"
25
#include "net.h"
26
#include "monitor.h"
27
#include "console.h"
28
#include "sysemu.h"
29
#include "qemu-timer.h"
30
#include "qemu-char.h"
31
#include "hw/usb.h"
32
#include "hw/baum.h"
33
#include "hw/msmouse.h"
34
#include "qemu-objects.h"
35

    
36
#include <unistd.h>
37
#include <fcntl.h>
38
#include <signal.h>
39
#include <time.h>
40
#include <errno.h>
41
#include <sys/time.h>
42
#include <zlib.h>
43

    
44
#ifndef _WIN32
45
#include <sys/times.h>
46
#include <sys/wait.h>
47
#include <termios.h>
48
#include <sys/mman.h>
49
#include <sys/ioctl.h>
50
#include <sys/resource.h>
51
#include <sys/socket.h>
52
#include <netinet/in.h>
53
#include <net/if.h>
54
#include <arpa/inet.h>
55
#include <dirent.h>
56
#include <netdb.h>
57
#include <sys/select.h>
58
#ifdef CONFIG_BSD
59
#include <sys/stat.h>
60
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61
#include <libutil.h>
62
#include <dev/ppbus/ppi.h>
63
#include <dev/ppbus/ppbconf.h>
64
#if defined(__GLIBC__)
65
#include <pty.h>
66
#endif
67
#elif defined(__DragonFly__)
68
#include <libutil.h>
69
#include <dev/misc/ppi/ppi.h>
70
#include <bus/ppbus/ppbconf.h>
71
#else
72
#include <util.h>
73
#endif
74
#else
75
#ifdef __linux__
76
#include <pty.h>
77

    
78
#include <linux/ppdev.h>
79
#include <linux/parport.h>
80
#endif
81
#ifdef __sun__
82
#include <sys/stat.h>
83
#include <sys/ethernet.h>
84
#include <sys/sockio.h>
85
#include <netinet/arp.h>
86
#include <netinet/in.h>
87
#include <netinet/in_systm.h>
88
#include <netinet/ip.h>
89
#include <netinet/ip_icmp.h> // must come after ip.h
90
#include <netinet/udp.h>
91
#include <netinet/tcp.h>
92
#include <net/if.h>
93
#include <syslog.h>
94
#include <stropts.h>
95
#endif
96
#endif
97
#endif
98

    
99
#include "qemu_socket.h"
100

    
101
#define READ_BUF_LEN 4096
102

    
103
/***********************************************************/
104
/* character device */
105

    
106
static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
107
    QTAILQ_HEAD_INITIALIZER(chardevs);
108

    
109
static void qemu_chr_event(CharDriverState *s, int event)
110
{
111
    /* Keep track if the char device is open */
112
    switch (event) {
113
        case CHR_EVENT_OPENED:
114
            s->opened = 1;
115
            break;
116
        case CHR_EVENT_CLOSED:
117
            s->opened = 0;
118
            break;
119
    }
120

    
121
    if (!s->chr_event)
122
        return;
123
    s->chr_event(s->handler_opaque, event);
124
}
125

    
126
static void qemu_chr_generic_open_bh(void *opaque)
127
{
128
    CharDriverState *s = opaque;
129
    qemu_chr_event(s, CHR_EVENT_OPENED);
130
    qemu_bh_delete(s->bh);
131
    s->bh = NULL;
132
}
133

    
134
void qemu_chr_generic_open(CharDriverState *s)
135
{
136
    if (s->bh == NULL) {
137
        s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
138
        qemu_bh_schedule(s->bh);
139
    }
140
}
141

    
142
int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
143
{
144
    return s->chr_write(s, buf, len);
145
}
146

    
147
int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
148
{
149
    if (!s->chr_ioctl)
150
        return -ENOTSUP;
151
    return s->chr_ioctl(s, cmd, arg);
152
}
153

    
154
int qemu_chr_can_read(CharDriverState *s)
155
{
156
    if (!s->chr_can_read)
157
        return 0;
158
    return s->chr_can_read(s->handler_opaque);
159
}
160

    
161
void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
162
{
163
    s->chr_read(s->handler_opaque, buf, len);
164
}
165

    
166
int qemu_chr_get_msgfd(CharDriverState *s)
167
{
168
    return s->get_msgfd ? s->get_msgfd(s) : -1;
169
}
170

    
171
void qemu_chr_accept_input(CharDriverState *s)
172
{
173
    if (s->chr_accept_input)
174
        s->chr_accept_input(s);
175
}
176

    
177
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
178
{
179
    char buf[READ_BUF_LEN];
180
    va_list ap;
181
    va_start(ap, fmt);
182
    vsnprintf(buf, sizeof(buf), fmt, ap);
183
    qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
184
    va_end(ap);
185
}
186

    
187
void qemu_chr_send_event(CharDriverState *s, int event)
188
{
189
    if (s->chr_send_event)
190
        s->chr_send_event(s, event);
191
}
192

    
193
void qemu_chr_add_handlers(CharDriverState *s,
194
                           IOCanReadHandler *fd_can_read,
195
                           IOReadHandler *fd_read,
196
                           IOEventHandler *fd_event,
197
                           void *opaque)
198
{
199
    s->chr_can_read = fd_can_read;
200
    s->chr_read = fd_read;
201
    s->chr_event = fd_event;
202
    s->handler_opaque = opaque;
203
    if (s->chr_update_read_handler)
204
        s->chr_update_read_handler(s);
205

    
206
    /* We're connecting to an already opened device, so let's make sure we
207
       also get the open event */
208
    if (s->opened) {
209
        qemu_chr_generic_open(s);
210
    }
211
}
212

    
213
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
214
{
215
    return len;
216
}
217

    
218
static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
219
{
220
    CharDriverState *chr;
221

    
222
    chr = qemu_mallocz(sizeof(CharDriverState));
223
    chr->chr_write = null_chr_write;
224
    return chr;
225
}
226

    
227
/* MUX driver for serial I/O splitting */
228
#define MAX_MUX 4
229
#define MUX_BUFFER_SIZE 32        /* Must be a power of 2.  */
230
#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
231
typedef struct {
232
    IOCanReadHandler *chr_can_read[MAX_MUX];
233
    IOReadHandler *chr_read[MAX_MUX];
234
    IOEventHandler *chr_event[MAX_MUX];
235
    void *ext_opaque[MAX_MUX];
236
    CharDriverState *drv;
237
    int focus;
238
    int mux_cnt;
239
    int term_got_escape;
240
    int max_size;
241
    /* Intermediate input buffer allows to catch escape sequences even if the
242
       currently active device is not accepting any input - but only until it
243
       is full as well. */
244
    unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
245
    int prod[MAX_MUX];
246
    int cons[MAX_MUX];
247
    int timestamps;
248
    int linestart;
249
    int64_t timestamps_start;
250
} MuxDriver;
251

    
252

    
253
static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
254
{
255
    MuxDriver *d = chr->opaque;
256
    int ret;
257
    if (!d->timestamps) {
258
        ret = d->drv->chr_write(d->drv, buf, len);
259
    } else {
260
        int i;
261

    
262
        ret = 0;
263
        for (i = 0; i < len; i++) {
264
            if (d->linestart) {
265
                char buf1[64];
266
                int64_t ti;
267
                int secs;
268

    
269
                ti = qemu_get_clock(rt_clock);
270
                if (d->timestamps_start == -1)
271
                    d->timestamps_start = ti;
272
                ti -= d->timestamps_start;
273
                secs = ti / 1000;
274
                snprintf(buf1, sizeof(buf1),
275
                         "[%02d:%02d:%02d.%03d] ",
276
                         secs / 3600,
277
                         (secs / 60) % 60,
278
                         secs % 60,
279
                         (int)(ti % 1000));
280
                d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
281
                d->linestart = 0;
282
            }
283
            ret += d->drv->chr_write(d->drv, buf+i, 1);
284
            if (buf[i] == '\n') {
285
                d->linestart = 1;
286
            }
287
        }
288
    }
289
    return ret;
290
}
291

    
292
static const char * const mux_help[] = {
293
    "% h    print this help\n\r",
294
    "% x    exit emulator\n\r",
295
    "% s    save disk data back to file (if -snapshot)\n\r",
296
    "% t    toggle console timestamps\n\r"
297
    "% b    send break (magic sysrq)\n\r",
298
    "% c    switch between console and monitor\n\r",
299
    "% %  sends %\n\r",
300
    NULL
301
};
302

    
303
int term_escape_char = 0x01; /* ctrl-a is used for escape */
304
static void mux_print_help(CharDriverState *chr)
305
{
306
    int i, j;
307
    char ebuf[15] = "Escape-Char";
308
    char cbuf[50] = "\n\r";
309

    
310
    if (term_escape_char > 0 && term_escape_char < 26) {
311
        snprintf(cbuf, sizeof(cbuf), "\n\r");
312
        snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
313
    } else {
314
        snprintf(cbuf, sizeof(cbuf),
315
                 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
316
                 term_escape_char);
317
    }
318
    chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
319
    for (i = 0; mux_help[i] != NULL; i++) {
320
        for (j=0; mux_help[i][j] != '\0'; j++) {
321
            if (mux_help[i][j] == '%')
322
                chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
323
            else
324
                chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
325
        }
326
    }
327
}
328

    
329
static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
330
{
331
    if (d->chr_event[mux_nr])
332
        d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
333
}
334

    
335
static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
336
{
337
    if (d->term_got_escape) {
338
        d->term_got_escape = 0;
339
        if (ch == term_escape_char)
340
            goto send_char;
341
        switch(ch) {
342
        case '?':
343
        case 'h':
344
            mux_print_help(chr);
345
            break;
346
        case 'x':
347
            {
348
                 const char *term =  "QEMU: Terminated\n\r";
349
                 chr->chr_write(chr,(uint8_t *)term,strlen(term));
350
                 exit(0);
351
                 break;
352
            }
353
        case 's':
354
            bdrv_commit_all();
355
            break;
356
        case 'b':
357
            qemu_chr_event(chr, CHR_EVENT_BREAK);
358
            break;
359
        case 'c':
360
            /* Switch to the next registered device */
361
            mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
362
            d->focus++;
363
            if (d->focus >= d->mux_cnt)
364
                d->focus = 0;
365
            mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
366
            break;
367
        case 't':
368
            d->timestamps = !d->timestamps;
369
            d->timestamps_start = -1;
370
            d->linestart = 0;
371
            break;
372
        }
373
    } else if (ch == term_escape_char) {
374
        d->term_got_escape = 1;
375
    } else {
376
    send_char:
377
        return 1;
378
    }
379
    return 0;
380
}
381

    
382
static void mux_chr_accept_input(CharDriverState *chr)
383
{
384
    MuxDriver *d = chr->opaque;
385
    int m = d->focus;
386

    
387
    while (d->prod[m] != d->cons[m] &&
388
           d->chr_can_read[m] &&
389
           d->chr_can_read[m](d->ext_opaque[m])) {
390
        d->chr_read[m](d->ext_opaque[m],
391
                       &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
392
    }
393
}
394

    
395
static int mux_chr_can_read(void *opaque)
396
{
397
    CharDriverState *chr = opaque;
398
    MuxDriver *d = chr->opaque;
399
    int m = d->focus;
400

    
401
    if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
402
        return 1;
403
    if (d->chr_can_read[m])
404
        return d->chr_can_read[m](d->ext_opaque[m]);
405
    return 0;
406
}
407

    
408
static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
409
{
410
    CharDriverState *chr = opaque;
411
    MuxDriver *d = chr->opaque;
412
    int m = d->focus;
413
    int i;
414

    
415
    mux_chr_accept_input (opaque);
416

    
417
    for(i = 0; i < size; i++)
418
        if (mux_proc_byte(chr, d, buf[i])) {
419
            if (d->prod[m] == d->cons[m] &&
420
                d->chr_can_read[m] &&
421
                d->chr_can_read[m](d->ext_opaque[m]))
422
                d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
423
            else
424
                d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
425
        }
426
}
427

    
428
static void mux_chr_event(void *opaque, int event)
429
{
430
    CharDriverState *chr = opaque;
431
    MuxDriver *d = chr->opaque;
432
    int i;
433

    
434
    /* Send the event to all registered listeners */
435
    for (i = 0; i < d->mux_cnt; i++)
436
        mux_chr_send_event(d, i, event);
437
}
438

    
439
static void mux_chr_update_read_handler(CharDriverState *chr)
440
{
441
    MuxDriver *d = chr->opaque;
442

    
443
    if (d->mux_cnt >= MAX_MUX) {
444
        fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
445
        return;
446
    }
447
    d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
448
    d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
449
    d->chr_read[d->mux_cnt] = chr->chr_read;
450
    d->chr_event[d->mux_cnt] = chr->chr_event;
451
    /* Fix up the real driver with mux routines */
452
    if (d->mux_cnt == 0) {
453
        qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
454
                              mux_chr_event, chr);
455
    }
456
    if (d->focus != -1) {
457
        mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
458
    }
459
    d->focus = d->mux_cnt;
460
    d->mux_cnt++;
461
    mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
462
}
463

    
464
static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
465
{
466
    CharDriverState *chr;
467
    MuxDriver *d;
468

    
469
    chr = qemu_mallocz(sizeof(CharDriverState));
470
    d = qemu_mallocz(sizeof(MuxDriver));
471

    
472
    chr->opaque = d;
473
    d->drv = drv;
474
    d->focus = -1;
475
    chr->chr_write = mux_chr_write;
476
    chr->chr_update_read_handler = mux_chr_update_read_handler;
477
    chr->chr_accept_input = mux_chr_accept_input;
478

    
479
    /* Muxes are always open on creation */
480
    qemu_chr_generic_open(chr);
481

    
482
    return chr;
483
}
484

    
485

    
486
#ifdef _WIN32
487
int send_all(int fd, const void *buf, int len1)
488
{
489
    int ret, len;
490

    
491
    len = len1;
492
    while (len > 0) {
493
        ret = send(fd, buf, len, 0);
494
        if (ret < 0) {
495
            errno = WSAGetLastError();
496
            if (errno != WSAEWOULDBLOCK) {
497
                return -1;
498
            }
499
        } else if (ret == 0) {
500
            break;
501
        } else {
502
            buf += ret;
503
            len -= ret;
504
        }
505
    }
506
    return len1 - len;
507
}
508

    
509
#else
510

    
511
static int unix_write(int fd, const uint8_t *buf, int len1)
512
{
513
    int ret, len;
514

    
515
    len = len1;
516
    while (len > 0) {
517
        ret = write(fd, buf, len);
518
        if (ret < 0) {
519
            if (errno != EINTR && errno != EAGAIN)
520
                return -1;
521
        } else if (ret == 0) {
522
            break;
523
        } else {
524
            buf += ret;
525
            len -= ret;
526
        }
527
    }
528
    return len1 - len;
529
}
530

    
531
int send_all(int fd, const void *buf, int len1)
532
{
533
    return unix_write(fd, buf, len1);
534
}
535
#endif /* !_WIN32 */
536

    
537
#ifndef _WIN32
538

    
539
typedef struct {
540
    int fd_in, fd_out;
541
    int max_size;
542
} FDCharDriver;
543

    
544
#define STDIO_MAX_CLIENTS 1
545
static int stdio_nb_clients = 0;
546

    
547
static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
548
{
549
    FDCharDriver *s = chr->opaque;
550
    return send_all(s->fd_out, buf, len);
551
}
552

    
553
static int fd_chr_read_poll(void *opaque)
554
{
555
    CharDriverState *chr = opaque;
556
    FDCharDriver *s = chr->opaque;
557

    
558
    s->max_size = qemu_chr_can_read(chr);
559
    return s->max_size;
560
}
561

    
562
static void fd_chr_read(void *opaque)
563
{
564
    CharDriverState *chr = opaque;
565
    FDCharDriver *s = chr->opaque;
566
    int size, len;
567
    uint8_t buf[READ_BUF_LEN];
568

    
569
    len = sizeof(buf);
570
    if (len > s->max_size)
571
        len = s->max_size;
572
    if (len == 0)
573
        return;
574
    size = read(s->fd_in, buf, len);
575
    if (size == 0) {
576
        /* FD has been closed. Remove it from the active list.  */
577
        qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
578
        qemu_chr_event(chr, CHR_EVENT_CLOSED);
579
        return;
580
    }
581
    if (size > 0) {
582
        qemu_chr_read(chr, buf, size);
583
    }
584
}
585

    
586
static void fd_chr_update_read_handler(CharDriverState *chr)
587
{
588
    FDCharDriver *s = chr->opaque;
589

    
590
    if (s->fd_in >= 0) {
591
        if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
592
        } else {
593
            qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
594
                                 fd_chr_read, NULL, chr);
595
        }
596
    }
597
}
598

    
599
static void fd_chr_close(struct CharDriverState *chr)
600
{
601
    FDCharDriver *s = chr->opaque;
602

    
603
    if (s->fd_in >= 0) {
604
        if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
605
        } else {
606
            qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
607
        }
608
    }
609

    
610
    qemu_free(s);
611
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
612
}
613

    
614
/* open a character device to a unix fd */
615
static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
616
{
617
    CharDriverState *chr;
618
    FDCharDriver *s;
619

    
620
    chr = qemu_mallocz(sizeof(CharDriverState));
621
    s = qemu_mallocz(sizeof(FDCharDriver));
622
    s->fd_in = fd_in;
623
    s->fd_out = fd_out;
624
    chr->opaque = s;
625
    chr->chr_write = fd_chr_write;
626
    chr->chr_update_read_handler = fd_chr_update_read_handler;
627
    chr->chr_close = fd_chr_close;
628

    
629
    qemu_chr_generic_open(chr);
630

    
631
    return chr;
632
}
633

    
634
static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
635
{
636
    int fd_out;
637

    
638
    TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
639
                      O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
640
    if (fd_out < 0)
641
        return NULL;
642
    return qemu_chr_open_fd(-1, fd_out);
643
}
644

    
645
static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
646
{
647
    int fd_in, fd_out;
648
    char filename_in[256], filename_out[256];
649
    const char *filename = qemu_opt_get(opts, "path");
650

    
651
    if (filename == NULL) {
652
        fprintf(stderr, "chardev: pipe: no filename given\n");
653
        return NULL;
654
    }
655

    
656
    snprintf(filename_in, 256, "%s.in", filename);
657
    snprintf(filename_out, 256, "%s.out", filename);
658
    TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
659
    TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
660
    if (fd_in < 0 || fd_out < 0) {
661
        if (fd_in >= 0)
662
            close(fd_in);
663
        if (fd_out >= 0)
664
            close(fd_out);
665
        TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
666
        if (fd_in < 0)
667
            return NULL;
668
    }
669
    return qemu_chr_open_fd(fd_in, fd_out);
670
}
671

    
672

    
673
/* for STDIO, we handle the case where several clients use it
674
   (nographic mode) */
675

    
676
#define TERM_FIFO_MAX_SIZE 1
677

    
678
static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
679
static int term_fifo_size;
680

    
681
static int stdio_read_poll(void *opaque)
682
{
683
    CharDriverState *chr = opaque;
684

    
685
    /* try to flush the queue if needed */
686
    if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
687
        qemu_chr_read(chr, term_fifo, 1);
688
        term_fifo_size = 0;
689
    }
690
    /* see if we can absorb more chars */
691
    if (term_fifo_size == 0)
692
        return 1;
693
    else
694
        return 0;
695
}
696

    
697
static void stdio_read(void *opaque)
698
{
699
    int size;
700
    uint8_t buf[1];
701
    CharDriverState *chr = opaque;
702

    
703
    size = read(0, buf, 1);
704
    if (size == 0) {
705
        /* stdin has been closed. Remove it from the active list.  */
706
        qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
707
        qemu_chr_event(chr, CHR_EVENT_CLOSED);
708
        return;
709
    }
710
    if (size > 0) {
711
        if (qemu_chr_can_read(chr) > 0) {
712
            qemu_chr_read(chr, buf, 1);
713
        } else if (term_fifo_size == 0) {
714
            term_fifo[term_fifo_size++] = buf[0];
715
        }
716
    }
717
}
718

    
719
/* init terminal so that we can grab keys */
720
static struct termios oldtty;
721
static int old_fd0_flags;
722
static int term_atexit_done;
723

    
724
static void term_exit(void)
725
{
726
    tcsetattr (0, TCSANOW, &oldtty);
727
    fcntl(0, F_SETFL, old_fd0_flags);
728
}
729

    
730
static void term_init(QemuOpts *opts)
731
{
732
    struct termios tty;
733

    
734
    tcgetattr (0, &tty);
735
    oldtty = tty;
736
    old_fd0_flags = fcntl(0, F_GETFL);
737

    
738
    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
739
                          |INLCR|IGNCR|ICRNL|IXON);
740
    tty.c_oflag |= OPOST;
741
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
742
    /* if graphical mode, we allow Ctrl-C handling */
743
    if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
744
        tty.c_lflag &= ~ISIG;
745
    tty.c_cflag &= ~(CSIZE|PARENB);
746
    tty.c_cflag |= CS8;
747
    tty.c_cc[VMIN] = 1;
748
    tty.c_cc[VTIME] = 0;
749

    
750
    tcsetattr (0, TCSANOW, &tty);
751

    
752
    if (!term_atexit_done++)
753
        atexit(term_exit);
754

    
755
    fcntl(0, F_SETFL, O_NONBLOCK);
756
}
757

    
758
static void qemu_chr_close_stdio(struct CharDriverState *chr)
759
{
760
    term_exit();
761
    stdio_nb_clients--;
762
    qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
763
    fd_chr_close(chr);
764
}
765

    
766
static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
767
{
768
    CharDriverState *chr;
769

    
770
    if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
771
        return NULL;
772
    chr = qemu_chr_open_fd(0, 1);
773
    chr->chr_close = qemu_chr_close_stdio;
774
    qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
775
    stdio_nb_clients++;
776
    term_init(opts);
777

    
778
    return chr;
779
}
780

    
781
#ifdef __sun__
782
/* Once Solaris has openpty(), this is going to be removed. */
783
static int openpty(int *amaster, int *aslave, char *name,
784
                   struct termios *termp, struct winsize *winp)
785
{
786
        const char *slave;
787
        int mfd = -1, sfd = -1;
788

    
789
        *amaster = *aslave = -1;
790

    
791
        mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
792
        if (mfd < 0)
793
                goto err;
794

    
795
        if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
796
                goto err;
797

    
798
        if ((slave = ptsname(mfd)) == NULL)
799
                goto err;
800

    
801
        if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
802
                goto err;
803

    
804
        if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
805
            (termp != NULL && tcgetattr(sfd, termp) < 0))
806
                goto err;
807

    
808
        if (amaster)
809
                *amaster = mfd;
810
        if (aslave)
811
                *aslave = sfd;
812
        if (winp)
813
                ioctl(sfd, TIOCSWINSZ, winp);
814

    
815
        return 0;
816

    
817
err:
818
        if (sfd != -1)
819
                close(sfd);
820
        close(mfd);
821
        return -1;
822
}
823

    
824
static void cfmakeraw (struct termios *termios_p)
825
{
826
        termios_p->c_iflag &=
827
                ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
828
        termios_p->c_oflag &= ~OPOST;
829
        termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
830
        termios_p->c_cflag &= ~(CSIZE|PARENB);
831
        termios_p->c_cflag |= CS8;
832

    
833
        termios_p->c_cc[VMIN] = 0;
834
        termios_p->c_cc[VTIME] = 0;
835
}
836
#endif
837

    
838
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
839
    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
840
    || defined(__GLIBC__)
841

    
842
typedef struct {
843
    int fd;
844
    int connected;
845
    int polling;
846
    int read_bytes;
847
    QEMUTimer *timer;
848
} PtyCharDriver;
849

    
850
static void pty_chr_update_read_handler(CharDriverState *chr);
851
static void pty_chr_state(CharDriverState *chr, int connected);
852

    
853
static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
854
{
855
    PtyCharDriver *s = chr->opaque;
856

    
857
    if (!s->connected) {
858
        /* guest sends data, check for (re-)connect */
859
        pty_chr_update_read_handler(chr);
860
        return 0;
861
    }
862
    return send_all(s->fd, buf, len);
863
}
864

    
865
static int pty_chr_read_poll(void *opaque)
866
{
867
    CharDriverState *chr = opaque;
868
    PtyCharDriver *s = chr->opaque;
869

    
870
    s->read_bytes = qemu_chr_can_read(chr);
871
    return s->read_bytes;
872
}
873

    
874
static void pty_chr_read(void *opaque)
875
{
876
    CharDriverState *chr = opaque;
877
    PtyCharDriver *s = chr->opaque;
878
    int size, len;
879
    uint8_t buf[READ_BUF_LEN];
880

    
881
    len = sizeof(buf);
882
    if (len > s->read_bytes)
883
        len = s->read_bytes;
884
    if (len == 0)
885
        return;
886
    size = read(s->fd, buf, len);
887
    if ((size == -1 && errno == EIO) ||
888
        (size == 0)) {
889
        pty_chr_state(chr, 0);
890
        return;
891
    }
892
    if (size > 0) {
893
        pty_chr_state(chr, 1);
894
        qemu_chr_read(chr, buf, size);
895
    }
896
}
897

    
898
static void pty_chr_update_read_handler(CharDriverState *chr)
899
{
900
    PtyCharDriver *s = chr->opaque;
901

    
902
    qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
903
                         pty_chr_read, NULL, chr);
904
    s->polling = 1;
905
    /*
906
     * Short timeout here: just need wait long enougth that qemu makes
907
     * it through the poll loop once.  When reconnected we want a
908
     * short timeout so we notice it almost instantly.  Otherwise
909
     * read() gives us -EIO instantly, making pty_chr_state() reset the
910
     * timeout to the normal (much longer) poll interval before the
911
     * timer triggers.
912
     */
913
    qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
914
}
915

    
916
static void pty_chr_state(CharDriverState *chr, int connected)
917
{
918
    PtyCharDriver *s = chr->opaque;
919

    
920
    if (!connected) {
921
        qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
922
        s->connected = 0;
923
        s->polling = 0;
924
        /* (re-)connect poll interval for idle guests: once per second.
925
         * We check more frequently in case the guests sends data to
926
         * the virtual device linked to our pty. */
927
        qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
928
    } else {
929
        if (!s->connected)
930
            qemu_chr_generic_open(chr);
931
        s->connected = 1;
932
    }
933
}
934

    
935
static void pty_chr_timer(void *opaque)
936
{
937
    struct CharDriverState *chr = opaque;
938
    PtyCharDriver *s = chr->opaque;
939

    
940
    if (s->connected)
941
        return;
942
    if (s->polling) {
943
        /* If we arrive here without polling being cleared due
944
         * read returning -EIO, then we are (re-)connected */
945
        pty_chr_state(chr, 1);
946
        return;
947
    }
948

    
949
    /* Next poll ... */
950
    pty_chr_update_read_handler(chr);
951
}
952

    
953
static void pty_chr_close(struct CharDriverState *chr)
954
{
955
    PtyCharDriver *s = chr->opaque;
956

    
957
    qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
958
    close(s->fd);
959
    qemu_del_timer(s->timer);
960
    qemu_free_timer(s->timer);
961
    qemu_free(s);
962
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
963
}
964

    
965
static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
966
{
967
    CharDriverState *chr;
968
    PtyCharDriver *s;
969
    struct termios tty;
970
    int slave_fd, len;
971
#if defined(__OpenBSD__) || defined(__DragonFly__)
972
    char pty_name[PATH_MAX];
973
#define q_ptsname(x) pty_name
974
#else
975
    char *pty_name = NULL;
976
#define q_ptsname(x) ptsname(x)
977
#endif
978

    
979
    chr = qemu_mallocz(sizeof(CharDriverState));
980
    s = qemu_mallocz(sizeof(PtyCharDriver));
981

    
982
    if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
983
        return NULL;
984
    }
985

    
986
    /* Set raw attributes on the pty. */
987
    tcgetattr(slave_fd, &tty);
988
    cfmakeraw(&tty);
989
    tcsetattr(slave_fd, TCSAFLUSH, &tty);
990
    close(slave_fd);
991

    
992
    len = strlen(q_ptsname(s->fd)) + 5;
993
    chr->filename = qemu_malloc(len);
994
    snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
995
    qemu_opt_set(opts, "path", q_ptsname(s->fd));
996
    fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
997

    
998
    chr->opaque = s;
999
    chr->chr_write = pty_chr_write;
1000
    chr->chr_update_read_handler = pty_chr_update_read_handler;
1001
    chr->chr_close = pty_chr_close;
1002

    
1003
    s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
1004

    
1005
    return chr;
1006
}
1007

    
1008
static void tty_serial_init(int fd, int speed,
1009
                            int parity, int data_bits, int stop_bits)
1010
{
1011
    struct termios tty;
1012
    speed_t spd;
1013

    
1014
#if 0
1015
    printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1016
           speed, parity, data_bits, stop_bits);
1017
#endif
1018
    tcgetattr (fd, &tty);
1019
    if (!term_atexit_done) {
1020
        oldtty = tty;
1021
    }
1022

    
1023
#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1024
    speed = speed * 10 / 11;
1025
    do {
1026
        check_speed(50);
1027
        check_speed(75);
1028
        check_speed(110);
1029
        check_speed(134);
1030
        check_speed(150);
1031
        check_speed(200);
1032
        check_speed(300);
1033
        check_speed(600);
1034
        check_speed(1200);
1035
        check_speed(1800);
1036
        check_speed(2400);
1037
        check_speed(4800);
1038
        check_speed(9600);
1039
        check_speed(19200);
1040
        check_speed(38400);
1041
        /* Non-Posix values follow. They may be unsupported on some systems. */
1042
        check_speed(57600);
1043
        check_speed(115200);
1044
#ifdef B230400
1045
        check_speed(230400);
1046
#endif
1047
#ifdef B460800
1048
        check_speed(460800);
1049
#endif
1050
#ifdef B500000
1051
        check_speed(500000);
1052
#endif
1053
#ifdef B576000
1054
        check_speed(576000);
1055
#endif
1056
#ifdef B921600
1057
        check_speed(921600);
1058
#endif
1059
#ifdef B1000000
1060
        check_speed(1000000);
1061
#endif
1062
#ifdef B1152000
1063
        check_speed(1152000);
1064
#endif
1065
#ifdef B1500000
1066
        check_speed(1500000);
1067
#endif
1068
#ifdef B2000000
1069
        check_speed(2000000);
1070
#endif
1071
#ifdef B2500000
1072
        check_speed(2500000);
1073
#endif
1074
#ifdef B3000000
1075
        check_speed(3000000);
1076
#endif
1077
#ifdef B3500000
1078
        check_speed(3500000);
1079
#endif
1080
#ifdef B4000000
1081
        check_speed(4000000);
1082
#endif
1083
        spd = B115200;
1084
    } while (0);
1085

    
1086
    cfsetispeed(&tty, spd);
1087
    cfsetospeed(&tty, spd);
1088

    
1089
    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1090
                          |INLCR|IGNCR|ICRNL|IXON);
1091
    tty.c_oflag |= OPOST;
1092
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1093
    tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1094
    switch(data_bits) {
1095
    default:
1096
    case 8:
1097
        tty.c_cflag |= CS8;
1098
        break;
1099
    case 7:
1100
        tty.c_cflag |= CS7;
1101
        break;
1102
    case 6:
1103
        tty.c_cflag |= CS6;
1104
        break;
1105
    case 5:
1106
        tty.c_cflag |= CS5;
1107
        break;
1108
    }
1109
    switch(parity) {
1110
    default:
1111
    case 'N':
1112
        break;
1113
    case 'E':
1114
        tty.c_cflag |= PARENB;
1115
        break;
1116
    case 'O':
1117
        tty.c_cflag |= PARENB | PARODD;
1118
        break;
1119
    }
1120
    if (stop_bits == 2)
1121
        tty.c_cflag |= CSTOPB;
1122

    
1123
    tcsetattr (fd, TCSANOW, &tty);
1124
}
1125

    
1126
static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1127
{
1128
    FDCharDriver *s = chr->opaque;
1129

    
1130
    switch(cmd) {
1131
    case CHR_IOCTL_SERIAL_SET_PARAMS:
1132
        {
1133
            QEMUSerialSetParams *ssp = arg;
1134
            tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1135
                            ssp->data_bits, ssp->stop_bits);
1136
        }
1137
        break;
1138
    case CHR_IOCTL_SERIAL_SET_BREAK:
1139
        {
1140
            int enable = *(int *)arg;
1141
            if (enable)
1142
                tcsendbreak(s->fd_in, 1);
1143
        }
1144
        break;
1145
    case CHR_IOCTL_SERIAL_GET_TIOCM:
1146
        {
1147
            int sarg = 0;
1148
            int *targ = (int *)arg;
1149
            ioctl(s->fd_in, TIOCMGET, &sarg);
1150
            *targ = 0;
1151
            if (sarg & TIOCM_CTS)
1152
                *targ |= CHR_TIOCM_CTS;
1153
            if (sarg & TIOCM_CAR)
1154
                *targ |= CHR_TIOCM_CAR;
1155
            if (sarg & TIOCM_DSR)
1156
                *targ |= CHR_TIOCM_DSR;
1157
            if (sarg & TIOCM_RI)
1158
                *targ |= CHR_TIOCM_RI;
1159
            if (sarg & TIOCM_DTR)
1160
                *targ |= CHR_TIOCM_DTR;
1161
            if (sarg & TIOCM_RTS)
1162
                *targ |= CHR_TIOCM_RTS;
1163
        }
1164
        break;
1165
    case CHR_IOCTL_SERIAL_SET_TIOCM:
1166
        {
1167
            int sarg = *(int *)arg;
1168
            int targ = 0;
1169
            ioctl(s->fd_in, TIOCMGET, &targ);
1170
            targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1171
                     | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1172
            if (sarg & CHR_TIOCM_CTS)
1173
                targ |= TIOCM_CTS;
1174
            if (sarg & CHR_TIOCM_CAR)
1175
                targ |= TIOCM_CAR;
1176
            if (sarg & CHR_TIOCM_DSR)
1177
                targ |= TIOCM_DSR;
1178
            if (sarg & CHR_TIOCM_RI)
1179
                targ |= TIOCM_RI;
1180
            if (sarg & CHR_TIOCM_DTR)
1181
                targ |= TIOCM_DTR;
1182
            if (sarg & CHR_TIOCM_RTS)
1183
                targ |= TIOCM_RTS;
1184
            ioctl(s->fd_in, TIOCMSET, &targ);
1185
        }
1186
        break;
1187
    default:
1188
        return -ENOTSUP;
1189
    }
1190
    return 0;
1191
}
1192

    
1193
static void tty_exit(void)
1194
{
1195
    tcsetattr(0, TCSANOW, &oldtty);
1196
}
1197

    
1198
static void qemu_chr_close_tty(CharDriverState *chr)
1199
{
1200
    FDCharDriver *s = chr->opaque;
1201
    int fd = -1;
1202

    
1203
    if (s) {
1204
        fd = s->fd_in;
1205
    }
1206

    
1207
    fd_chr_close(chr);
1208

    
1209
    if (fd >= 0) {
1210
        close(fd);
1211
    }
1212
}
1213

    
1214
static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1215
{
1216
    const char *filename = qemu_opt_get(opts, "path");
1217
    CharDriverState *chr;
1218
    int fd;
1219

    
1220
    TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1221
    if (fd < 0) {
1222
        return NULL;
1223
    }
1224
    tty_serial_init(fd, 115200, 'N', 8, 1);
1225
    chr = qemu_chr_open_fd(fd, fd);
1226
    if (!chr) {
1227
        close(fd);
1228
        return NULL;
1229
    }
1230
    chr->chr_ioctl = tty_serial_ioctl;
1231
    chr->chr_close = qemu_chr_close_tty;
1232
    if (!term_atexit_done++)
1233
        atexit(tty_exit);
1234
    return chr;
1235
}
1236
#else  /* ! __linux__ && ! __sun__ */
1237
static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1238
{
1239
    return NULL;
1240
}
1241
#endif /* __linux__ || __sun__ */
1242

    
1243
#if defined(__linux__)
1244
typedef struct {
1245
    int fd;
1246
    int mode;
1247
} ParallelCharDriver;
1248

    
1249
static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1250
{
1251
    if (s->mode != mode) {
1252
        int m = mode;
1253
        if (ioctl(s->fd, PPSETMODE, &m) < 0)
1254
            return 0;
1255
        s->mode = mode;
1256
    }
1257
    return 1;
1258
}
1259

    
1260
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1261
{
1262
    ParallelCharDriver *drv = chr->opaque;
1263
    int fd = drv->fd;
1264
    uint8_t b;
1265

    
1266
    switch(cmd) {
1267
    case CHR_IOCTL_PP_READ_DATA:
1268
        if (ioctl(fd, PPRDATA, &b) < 0)
1269
            return -ENOTSUP;
1270
        *(uint8_t *)arg = b;
1271
        break;
1272
    case CHR_IOCTL_PP_WRITE_DATA:
1273
        b = *(uint8_t *)arg;
1274
        if (ioctl(fd, PPWDATA, &b) < 0)
1275
            return -ENOTSUP;
1276
        break;
1277
    case CHR_IOCTL_PP_READ_CONTROL:
1278
        if (ioctl(fd, PPRCONTROL, &b) < 0)
1279
            return -ENOTSUP;
1280
        /* Linux gives only the lowest bits, and no way to know data
1281
           direction! For better compatibility set the fixed upper
1282
           bits. */
1283
        *(uint8_t *)arg = b | 0xc0;
1284
        break;
1285
    case CHR_IOCTL_PP_WRITE_CONTROL:
1286
        b = *(uint8_t *)arg;
1287
        if (ioctl(fd, PPWCONTROL, &b) < 0)
1288
            return -ENOTSUP;
1289
        break;
1290
    case CHR_IOCTL_PP_READ_STATUS:
1291
        if (ioctl(fd, PPRSTATUS, &b) < 0)
1292
            return -ENOTSUP;
1293
        *(uint8_t *)arg = b;
1294
        break;
1295
    case CHR_IOCTL_PP_DATA_DIR:
1296
        if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1297
            return -ENOTSUP;
1298
        break;
1299
    case CHR_IOCTL_PP_EPP_READ_ADDR:
1300
        if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1301
            struct ParallelIOArg *parg = arg;
1302
            int n = read(fd, parg->buffer, parg->count);
1303
            if (n != parg->count) {
1304
                return -EIO;
1305
            }
1306
        }
1307
        break;
1308
    case CHR_IOCTL_PP_EPP_READ:
1309
        if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1310
            struct ParallelIOArg *parg = arg;
1311
            int n = read(fd, parg->buffer, parg->count);
1312
            if (n != parg->count) {
1313
                return -EIO;
1314
            }
1315
        }
1316
        break;
1317
    case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1318
        if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1319
            struct ParallelIOArg *parg = arg;
1320
            int n = write(fd, parg->buffer, parg->count);
1321
            if (n != parg->count) {
1322
                return -EIO;
1323
            }
1324
        }
1325
        break;
1326
    case CHR_IOCTL_PP_EPP_WRITE:
1327
        if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1328
            struct ParallelIOArg *parg = arg;
1329
            int n = write(fd, parg->buffer, parg->count);
1330
            if (n != parg->count) {
1331
                return -EIO;
1332
            }
1333
        }
1334
        break;
1335
    default:
1336
        return -ENOTSUP;
1337
    }
1338
    return 0;
1339
}
1340

    
1341
static void pp_close(CharDriverState *chr)
1342
{
1343
    ParallelCharDriver *drv = chr->opaque;
1344
    int fd = drv->fd;
1345

    
1346
    pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1347
    ioctl(fd, PPRELEASE);
1348
    close(fd);
1349
    qemu_free(drv);
1350
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
1351
}
1352

    
1353
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1354
{
1355
    const char *filename = qemu_opt_get(opts, "path");
1356
    CharDriverState *chr;
1357
    ParallelCharDriver *drv;
1358
    int fd;
1359

    
1360
    TFR(fd = open(filename, O_RDWR));
1361
    if (fd < 0)
1362
        return NULL;
1363

    
1364
    if (ioctl(fd, PPCLAIM) < 0) {
1365
        close(fd);
1366
        return NULL;
1367
    }
1368

    
1369
    drv = qemu_mallocz(sizeof(ParallelCharDriver));
1370
    drv->fd = fd;
1371
    drv->mode = IEEE1284_MODE_COMPAT;
1372

    
1373
    chr = qemu_mallocz(sizeof(CharDriverState));
1374
    chr->chr_write = null_chr_write;
1375
    chr->chr_ioctl = pp_ioctl;
1376
    chr->chr_close = pp_close;
1377
    chr->opaque = drv;
1378

    
1379
    qemu_chr_generic_open(chr);
1380

    
1381
    return chr;
1382
}
1383
#endif /* __linux__ */
1384

    
1385
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1386
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1387
{
1388
    int fd = (int)(long)chr->opaque;
1389
    uint8_t b;
1390

    
1391
    switch(cmd) {
1392
    case CHR_IOCTL_PP_READ_DATA:
1393
        if (ioctl(fd, PPIGDATA, &b) < 0)
1394
            return -ENOTSUP;
1395
        *(uint8_t *)arg = b;
1396
        break;
1397
    case CHR_IOCTL_PP_WRITE_DATA:
1398
        b = *(uint8_t *)arg;
1399
        if (ioctl(fd, PPISDATA, &b) < 0)
1400
            return -ENOTSUP;
1401
        break;
1402
    case CHR_IOCTL_PP_READ_CONTROL:
1403
        if (ioctl(fd, PPIGCTRL, &b) < 0)
1404
            return -ENOTSUP;
1405
        *(uint8_t *)arg = b;
1406
        break;
1407
    case CHR_IOCTL_PP_WRITE_CONTROL:
1408
        b = *(uint8_t *)arg;
1409
        if (ioctl(fd, PPISCTRL, &b) < 0)
1410
            return -ENOTSUP;
1411
        break;
1412
    case CHR_IOCTL_PP_READ_STATUS:
1413
        if (ioctl(fd, PPIGSTATUS, &b) < 0)
1414
            return -ENOTSUP;
1415
        *(uint8_t *)arg = b;
1416
        break;
1417
    default:
1418
        return -ENOTSUP;
1419
    }
1420
    return 0;
1421
}
1422

    
1423
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1424
{
1425
    const char *filename = qemu_opt_get(opts, "path");
1426
    CharDriverState *chr;
1427
    int fd;
1428

    
1429
    fd = open(filename, O_RDWR);
1430
    if (fd < 0)
1431
        return NULL;
1432

    
1433
    chr = qemu_mallocz(sizeof(CharDriverState));
1434
    chr->opaque = (void *)(long)fd;
1435
    chr->chr_write = null_chr_write;
1436
    chr->chr_ioctl = pp_ioctl;
1437
    return chr;
1438
}
1439
#endif
1440

    
1441
#else /* _WIN32 */
1442

    
1443
typedef struct {
1444
    int max_size;
1445
    HANDLE hcom, hrecv, hsend;
1446
    OVERLAPPED orecv, osend;
1447
    BOOL fpipe;
1448
    DWORD len;
1449
} WinCharState;
1450

    
1451
#define NSENDBUF 2048
1452
#define NRECVBUF 2048
1453
#define MAXCONNECT 1
1454
#define NTIMEOUT 5000
1455

    
1456
static int win_chr_poll(void *opaque);
1457
static int win_chr_pipe_poll(void *opaque);
1458

    
1459
static void win_chr_close(CharDriverState *chr)
1460
{
1461
    WinCharState *s = chr->opaque;
1462

    
1463
    if (s->hsend) {
1464
        CloseHandle(s->hsend);
1465
        s->hsend = NULL;
1466
    }
1467
    if (s->hrecv) {
1468
        CloseHandle(s->hrecv);
1469
        s->hrecv = NULL;
1470
    }
1471
    if (s->hcom) {
1472
        CloseHandle(s->hcom);
1473
        s->hcom = NULL;
1474
    }
1475
    if (s->fpipe)
1476
        qemu_del_polling_cb(win_chr_pipe_poll, chr);
1477
    else
1478
        qemu_del_polling_cb(win_chr_poll, chr);
1479

    
1480
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
1481
}
1482

    
1483
static int win_chr_init(CharDriverState *chr, const char *filename)
1484
{
1485
    WinCharState *s = chr->opaque;
1486
    COMMCONFIG comcfg;
1487
    COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1488
    COMSTAT comstat;
1489
    DWORD size;
1490
    DWORD err;
1491

    
1492
    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1493
    if (!s->hsend) {
1494
        fprintf(stderr, "Failed CreateEvent\n");
1495
        goto fail;
1496
    }
1497
    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1498
    if (!s->hrecv) {
1499
        fprintf(stderr, "Failed CreateEvent\n");
1500
        goto fail;
1501
    }
1502

    
1503
    s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1504
                      OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1505
    if (s->hcom == INVALID_HANDLE_VALUE) {
1506
        fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1507
        s->hcom = NULL;
1508
        goto fail;
1509
    }
1510

    
1511
    if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1512
        fprintf(stderr, "Failed SetupComm\n");
1513
        goto fail;
1514
    }
1515

    
1516
    ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1517
    size = sizeof(COMMCONFIG);
1518
    GetDefaultCommConfig(filename, &comcfg, &size);
1519
    comcfg.dcb.DCBlength = sizeof(DCB);
1520
    CommConfigDialog(filename, NULL, &comcfg);
1521

    
1522
    if (!SetCommState(s->hcom, &comcfg.dcb)) {
1523
        fprintf(stderr, "Failed SetCommState\n");
1524
        goto fail;
1525
    }
1526

    
1527
    if (!SetCommMask(s->hcom, EV_ERR)) {
1528
        fprintf(stderr, "Failed SetCommMask\n");
1529
        goto fail;
1530
    }
1531

    
1532
    cto.ReadIntervalTimeout = MAXDWORD;
1533
    if (!SetCommTimeouts(s->hcom, &cto)) {
1534
        fprintf(stderr, "Failed SetCommTimeouts\n");
1535
        goto fail;
1536
    }
1537

    
1538
    if (!ClearCommError(s->hcom, &err, &comstat)) {
1539
        fprintf(stderr, "Failed ClearCommError\n");
1540
        goto fail;
1541
    }
1542
    qemu_add_polling_cb(win_chr_poll, chr);
1543
    return 0;
1544

    
1545
 fail:
1546
    win_chr_close(chr);
1547
    return -1;
1548
}
1549

    
1550
static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1551
{
1552
    WinCharState *s = chr->opaque;
1553
    DWORD len, ret, size, err;
1554

    
1555
    len = len1;
1556
    ZeroMemory(&s->osend, sizeof(s->osend));
1557
    s->osend.hEvent = s->hsend;
1558
    while (len > 0) {
1559
        if (s->hsend)
1560
            ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1561
        else
1562
            ret = WriteFile(s->hcom, buf, len, &size, NULL);
1563
        if (!ret) {
1564
            err = GetLastError();
1565
            if (err == ERROR_IO_PENDING) {
1566
                ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1567
                if (ret) {
1568
                    buf += size;
1569
                    len -= size;
1570
                } else {
1571
                    break;
1572
                }
1573
            } else {
1574
                break;
1575
            }
1576
        } else {
1577
            buf += size;
1578
            len -= size;
1579
        }
1580
    }
1581
    return len1 - len;
1582
}
1583

    
1584
static int win_chr_read_poll(CharDriverState *chr)
1585
{
1586
    WinCharState *s = chr->opaque;
1587

    
1588
    s->max_size = qemu_chr_can_read(chr);
1589
    return s->max_size;
1590
}
1591

    
1592
static void win_chr_readfile(CharDriverState *chr)
1593
{
1594
    WinCharState *s = chr->opaque;
1595
    int ret, err;
1596
    uint8_t buf[READ_BUF_LEN];
1597
    DWORD size;
1598

    
1599
    ZeroMemory(&s->orecv, sizeof(s->orecv));
1600
    s->orecv.hEvent = s->hrecv;
1601
    ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1602
    if (!ret) {
1603
        err = GetLastError();
1604
        if (err == ERROR_IO_PENDING) {
1605
            ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1606
        }
1607
    }
1608

    
1609
    if (size > 0) {
1610
        qemu_chr_read(chr, buf, size);
1611
    }
1612
}
1613

    
1614
static void win_chr_read(CharDriverState *chr)
1615
{
1616
    WinCharState *s = chr->opaque;
1617

    
1618
    if (s->len > s->max_size)
1619
        s->len = s->max_size;
1620
    if (s->len == 0)
1621
        return;
1622

    
1623
    win_chr_readfile(chr);
1624
}
1625

    
1626
static int win_chr_poll(void *opaque)
1627
{
1628
    CharDriverState *chr = opaque;
1629
    WinCharState *s = chr->opaque;
1630
    COMSTAT status;
1631
    DWORD comerr;
1632

    
1633
    ClearCommError(s->hcom, &comerr, &status);
1634
    if (status.cbInQue > 0) {
1635
        s->len = status.cbInQue;
1636
        win_chr_read_poll(chr);
1637
        win_chr_read(chr);
1638
        return 1;
1639
    }
1640
    return 0;
1641
}
1642

    
1643
static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1644
{
1645
    const char *filename = qemu_opt_get(opts, "path");
1646
    CharDriverState *chr;
1647
    WinCharState *s;
1648

    
1649
    chr = qemu_mallocz(sizeof(CharDriverState));
1650
    s = qemu_mallocz(sizeof(WinCharState));
1651
    chr->opaque = s;
1652
    chr->chr_write = win_chr_write;
1653
    chr->chr_close = win_chr_close;
1654

    
1655
    if (win_chr_init(chr, filename) < 0) {
1656
        free(s);
1657
        free(chr);
1658
        return NULL;
1659
    }
1660
    qemu_chr_generic_open(chr);
1661
    return chr;
1662
}
1663

    
1664
static int win_chr_pipe_poll(void *opaque)
1665
{
1666
    CharDriverState *chr = opaque;
1667
    WinCharState *s = chr->opaque;
1668
    DWORD size;
1669

    
1670
    PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1671
    if (size > 0) {
1672
        s->len = size;
1673
        win_chr_read_poll(chr);
1674
        win_chr_read(chr);
1675
        return 1;
1676
    }
1677
    return 0;
1678
}
1679

    
1680
static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1681
{
1682
    WinCharState *s = chr->opaque;
1683
    OVERLAPPED ov;
1684
    int ret;
1685
    DWORD size;
1686
    char openname[256];
1687

    
1688
    s->fpipe = TRUE;
1689

    
1690
    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1691
    if (!s->hsend) {
1692
        fprintf(stderr, "Failed CreateEvent\n");
1693
        goto fail;
1694
    }
1695
    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1696
    if (!s->hrecv) {
1697
        fprintf(stderr, "Failed CreateEvent\n");
1698
        goto fail;
1699
    }
1700

    
1701
    snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1702
    s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1703
                              PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1704
                              PIPE_WAIT,
1705
                              MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1706
    if (s->hcom == INVALID_HANDLE_VALUE) {
1707
        fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1708
        s->hcom = NULL;
1709
        goto fail;
1710
    }
1711

    
1712
    ZeroMemory(&ov, sizeof(ov));
1713
    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1714
    ret = ConnectNamedPipe(s->hcom, &ov);
1715
    if (ret) {
1716
        fprintf(stderr, "Failed ConnectNamedPipe\n");
1717
        goto fail;
1718
    }
1719

    
1720
    ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1721
    if (!ret) {
1722
        fprintf(stderr, "Failed GetOverlappedResult\n");
1723
        if (ov.hEvent) {
1724
            CloseHandle(ov.hEvent);
1725
            ov.hEvent = NULL;
1726
        }
1727
        goto fail;
1728
    }
1729

    
1730
    if (ov.hEvent) {
1731
        CloseHandle(ov.hEvent);
1732
        ov.hEvent = NULL;
1733
    }
1734
    qemu_add_polling_cb(win_chr_pipe_poll, chr);
1735
    return 0;
1736

    
1737
 fail:
1738
    win_chr_close(chr);
1739
    return -1;
1740
}
1741

    
1742

    
1743
static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1744
{
1745
    const char *filename = qemu_opt_get(opts, "path");
1746
    CharDriverState *chr;
1747
    WinCharState *s;
1748

    
1749
    chr = qemu_mallocz(sizeof(CharDriverState));
1750
    s = qemu_mallocz(sizeof(WinCharState));
1751
    chr->opaque = s;
1752
    chr->chr_write = win_chr_write;
1753
    chr->chr_close = win_chr_close;
1754

    
1755
    if (win_chr_pipe_init(chr, filename) < 0) {
1756
        free(s);
1757
        free(chr);
1758
        return NULL;
1759
    }
1760
    qemu_chr_generic_open(chr);
1761
    return chr;
1762
}
1763

    
1764
static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1765
{
1766
    CharDriverState *chr;
1767
    WinCharState *s;
1768

    
1769
    chr = qemu_mallocz(sizeof(CharDriverState));
1770
    s = qemu_mallocz(sizeof(WinCharState));
1771
    s->hcom = fd_out;
1772
    chr->opaque = s;
1773
    chr->chr_write = win_chr_write;
1774
    qemu_chr_generic_open(chr);
1775
    return chr;
1776
}
1777

    
1778
static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1779
{
1780
    return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1781
}
1782

    
1783
static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1784
{
1785
    const char *file_out = qemu_opt_get(opts, "path");
1786
    HANDLE fd_out;
1787

    
1788
    fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1789
                        OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1790
    if (fd_out == INVALID_HANDLE_VALUE)
1791
        return NULL;
1792

    
1793
    return qemu_chr_open_win_file(fd_out);
1794
}
1795
#endif /* !_WIN32 */
1796

    
1797
/***********************************************************/
1798
/* UDP Net console */
1799

    
1800
typedef struct {
1801
    int fd;
1802
    uint8_t buf[READ_BUF_LEN];
1803
    int bufcnt;
1804
    int bufptr;
1805
    int max_size;
1806
} NetCharDriver;
1807

    
1808
static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1809
{
1810
    NetCharDriver *s = chr->opaque;
1811

    
1812
    return send(s->fd, (const void *)buf, len, 0);
1813
}
1814

    
1815
static int udp_chr_read_poll(void *opaque)
1816
{
1817
    CharDriverState *chr = opaque;
1818
    NetCharDriver *s = chr->opaque;
1819

    
1820
    s->max_size = qemu_chr_can_read(chr);
1821

    
1822
    /* If there were any stray characters in the queue process them
1823
     * first
1824
     */
1825
    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1826
        qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1827
        s->bufptr++;
1828
        s->max_size = qemu_chr_can_read(chr);
1829
    }
1830
    return s->max_size;
1831
}
1832

    
1833
static void udp_chr_read(void *opaque)
1834
{
1835
    CharDriverState *chr = opaque;
1836
    NetCharDriver *s = chr->opaque;
1837

    
1838
    if (s->max_size == 0)
1839
        return;
1840
    s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1841
    s->bufptr = s->bufcnt;
1842
    if (s->bufcnt <= 0)
1843
        return;
1844

    
1845
    s->bufptr = 0;
1846
    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1847
        qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1848
        s->bufptr++;
1849
        s->max_size = qemu_chr_can_read(chr);
1850
    }
1851
}
1852

    
1853
static void udp_chr_update_read_handler(CharDriverState *chr)
1854
{
1855
    NetCharDriver *s = chr->opaque;
1856

    
1857
    if (s->fd >= 0) {
1858
        qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1859
                             udp_chr_read, NULL, chr);
1860
    }
1861
}
1862

    
1863
static void udp_chr_close(CharDriverState *chr)
1864
{
1865
    NetCharDriver *s = chr->opaque;
1866
    if (s->fd >= 0) {
1867
        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1868
        closesocket(s->fd);
1869
    }
1870
    qemu_free(s);
1871
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
1872
}
1873

    
1874
static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1875
{
1876
    CharDriverState *chr = NULL;
1877
    NetCharDriver *s = NULL;
1878
    int fd = -1;
1879

    
1880
    chr = qemu_mallocz(sizeof(CharDriverState));
1881
    s = qemu_mallocz(sizeof(NetCharDriver));
1882

    
1883
    fd = inet_dgram_opts(opts);
1884
    if (fd < 0) {
1885
        fprintf(stderr, "inet_dgram_opts failed\n");
1886
        goto return_err;
1887
    }
1888

    
1889
    s->fd = fd;
1890
    s->bufcnt = 0;
1891
    s->bufptr = 0;
1892
    chr->opaque = s;
1893
    chr->chr_write = udp_chr_write;
1894
    chr->chr_update_read_handler = udp_chr_update_read_handler;
1895
    chr->chr_close = udp_chr_close;
1896
    return chr;
1897

    
1898
return_err:
1899
    if (chr)
1900
        free(chr);
1901
    if (s)
1902
        free(s);
1903
    if (fd >= 0)
1904
        closesocket(fd);
1905
    return NULL;
1906
}
1907

    
1908
/***********************************************************/
1909
/* TCP Net console */
1910

    
1911
typedef struct {
1912
    int fd, listen_fd;
1913
    int connected;
1914
    int max_size;
1915
    int do_telnetopt;
1916
    int do_nodelay;
1917
    int is_unix;
1918
    int msgfd;
1919
} TCPCharDriver;
1920

    
1921
static void tcp_chr_accept(void *opaque);
1922

    
1923
static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1924
{
1925
    TCPCharDriver *s = chr->opaque;
1926
    if (s->connected) {
1927
        return send_all(s->fd, buf, len);
1928
    } else {
1929
        /* XXX: indicate an error ? */
1930
        return len;
1931
    }
1932
}
1933

    
1934
static int tcp_chr_read_poll(void *opaque)
1935
{
1936
    CharDriverState *chr = opaque;
1937
    TCPCharDriver *s = chr->opaque;
1938
    if (!s->connected)
1939
        return 0;
1940
    s->max_size = qemu_chr_can_read(chr);
1941
    return s->max_size;
1942
}
1943

    
1944
#define IAC 255
1945
#define IAC_BREAK 243
1946
static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1947
                                      TCPCharDriver *s,
1948
                                      uint8_t *buf, int *size)
1949
{
1950
    /* Handle any telnet client's basic IAC options to satisfy char by
1951
     * char mode with no echo.  All IAC options will be removed from
1952
     * the buf and the do_telnetopt variable will be used to track the
1953
     * state of the width of the IAC information.
1954
     *
1955
     * IAC commands come in sets of 3 bytes with the exception of the
1956
     * "IAC BREAK" command and the double IAC.
1957
     */
1958

    
1959
    int i;
1960
    int j = 0;
1961

    
1962
    for (i = 0; i < *size; i++) {
1963
        if (s->do_telnetopt > 1) {
1964
            if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1965
                /* Double IAC means send an IAC */
1966
                if (j != i)
1967
                    buf[j] = buf[i];
1968
                j++;
1969
                s->do_telnetopt = 1;
1970
            } else {
1971
                if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1972
                    /* Handle IAC break commands by sending a serial break */
1973
                    qemu_chr_event(chr, CHR_EVENT_BREAK);
1974
                    s->do_telnetopt++;
1975
                }
1976
                s->do_telnetopt++;
1977
            }
1978
            if (s->do_telnetopt >= 4) {
1979
                s->do_telnetopt = 1;
1980
            }
1981
        } else {
1982
            if ((unsigned char)buf[i] == IAC) {
1983
                s->do_telnetopt = 2;
1984
            } else {
1985
                if (j != i)
1986
                    buf[j] = buf[i];
1987
                j++;
1988
            }
1989
        }
1990
    }
1991
    *size = j;
1992
}
1993

    
1994
static int tcp_get_msgfd(CharDriverState *chr)
1995
{
1996
    TCPCharDriver *s = chr->opaque;
1997
    int fd = s->msgfd;
1998
    s->msgfd = -1;
1999
    return fd;
2000
}
2001

    
2002
#ifndef _WIN32
2003
static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2004
{
2005
    TCPCharDriver *s = chr->opaque;
2006
    struct cmsghdr *cmsg;
2007

    
2008
    for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2009
        int fd;
2010

    
2011
        if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2012
            cmsg->cmsg_level != SOL_SOCKET ||
2013
            cmsg->cmsg_type != SCM_RIGHTS)
2014
            continue;
2015

    
2016
        fd = *((int *)CMSG_DATA(cmsg));
2017
        if (fd < 0)
2018
            continue;
2019

    
2020
        if (s->msgfd != -1)
2021
            close(s->msgfd);
2022
        s->msgfd = fd;
2023
    }
2024
}
2025

    
2026
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2027
{
2028
    TCPCharDriver *s = chr->opaque;
2029
    struct msghdr msg = { NULL, };
2030
    struct iovec iov[1];
2031
    union {
2032
        struct cmsghdr cmsg;
2033
        char control[CMSG_SPACE(sizeof(int))];
2034
    } msg_control;
2035
    ssize_t ret;
2036

    
2037
    iov[0].iov_base = buf;
2038
    iov[0].iov_len = len;
2039

    
2040
    msg.msg_iov = iov;
2041
    msg.msg_iovlen = 1;
2042
    msg.msg_control = &msg_control;
2043
    msg.msg_controllen = sizeof(msg_control);
2044

    
2045
    ret = recvmsg(s->fd, &msg, 0);
2046
    if (ret > 0 && s->is_unix)
2047
        unix_process_msgfd(chr, &msg);
2048

    
2049
    return ret;
2050
}
2051
#else
2052
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2053
{
2054
    TCPCharDriver *s = chr->opaque;
2055
    return recv(s->fd, buf, len, 0);
2056
}
2057
#endif
2058

    
2059
static void tcp_chr_read(void *opaque)
2060
{
2061
    CharDriverState *chr = opaque;
2062
    TCPCharDriver *s = chr->opaque;
2063
    uint8_t buf[READ_BUF_LEN];
2064
    int len, size;
2065

    
2066
    if (!s->connected || s->max_size <= 0)
2067
        return;
2068
    len = sizeof(buf);
2069
    if (len > s->max_size)
2070
        len = s->max_size;
2071
    size = tcp_chr_recv(chr, (void *)buf, len);
2072
    if (size == 0) {
2073
        /* connection closed */
2074
        s->connected = 0;
2075
        if (s->listen_fd >= 0) {
2076
            qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2077
        }
2078
        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2079
        closesocket(s->fd);
2080
        s->fd = -1;
2081
        qemu_chr_event(chr, CHR_EVENT_CLOSED);
2082
    } else if (size > 0) {
2083
        if (s->do_telnetopt)
2084
            tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2085
        if (size > 0)
2086
            qemu_chr_read(chr, buf, size);
2087
    }
2088
}
2089

    
2090
#ifndef _WIN32
2091
CharDriverState *qemu_chr_open_eventfd(int eventfd)
2092
{
2093
    return qemu_chr_open_fd(eventfd, eventfd);
2094
}
2095
#endif
2096

    
2097
static void tcp_chr_connect(void *opaque)
2098
{
2099
    CharDriverState *chr = opaque;
2100
    TCPCharDriver *s = chr->opaque;
2101

    
2102
    s->connected = 1;
2103
    qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2104
                         tcp_chr_read, NULL, chr);
2105
    qemu_chr_generic_open(chr);
2106
}
2107

    
2108
#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2109
static void tcp_chr_telnet_init(int fd)
2110
{
2111
    char buf[3];
2112
    /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2113
    IACSET(buf, 0xff, 0xfb, 0x01);  /* IAC WILL ECHO */
2114
    send(fd, (char *)buf, 3, 0);
2115
    IACSET(buf, 0xff, 0xfb, 0x03);  /* IAC WILL Suppress go ahead */
2116
    send(fd, (char *)buf, 3, 0);
2117
    IACSET(buf, 0xff, 0xfb, 0x00);  /* IAC WILL Binary */
2118
    send(fd, (char *)buf, 3, 0);
2119
    IACSET(buf, 0xff, 0xfd, 0x00);  /* IAC DO Binary */
2120
    send(fd, (char *)buf, 3, 0);
2121
}
2122

    
2123
static void socket_set_nodelay(int fd)
2124
{
2125
    int val = 1;
2126
    setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2127
}
2128

    
2129
static void tcp_chr_accept(void *opaque)
2130
{
2131
    CharDriverState *chr = opaque;
2132
    TCPCharDriver *s = chr->opaque;
2133
    struct sockaddr_in saddr;
2134
#ifndef _WIN32
2135
    struct sockaddr_un uaddr;
2136
#endif
2137
    struct sockaddr *addr;
2138
    socklen_t len;
2139
    int fd;
2140

    
2141
    for(;;) {
2142
#ifndef _WIN32
2143
        if (s->is_unix) {
2144
            len = sizeof(uaddr);
2145
            addr = (struct sockaddr *)&uaddr;
2146
        } else
2147
#endif
2148
        {
2149
            len = sizeof(saddr);
2150
            addr = (struct sockaddr *)&saddr;
2151
        }
2152
        fd = qemu_accept(s->listen_fd, addr, &len);
2153
        if (fd < 0 && errno != EINTR) {
2154
            return;
2155
        } else if (fd >= 0) {
2156
            if (s->do_telnetopt)
2157
                tcp_chr_telnet_init(fd);
2158
            break;
2159
        }
2160
    }
2161
    socket_set_nonblock(fd);
2162
    if (s->do_nodelay)
2163
        socket_set_nodelay(fd);
2164
    s->fd = fd;
2165
    qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2166
    tcp_chr_connect(chr);
2167
}
2168

    
2169
static void tcp_chr_close(CharDriverState *chr)
2170
{
2171
    TCPCharDriver *s = chr->opaque;
2172
    if (s->fd >= 0) {
2173
        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2174
        closesocket(s->fd);
2175
    }
2176
    if (s->listen_fd >= 0) {
2177
        qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2178
        closesocket(s->listen_fd);
2179
    }
2180
    qemu_free(s);
2181
    qemu_chr_event(chr, CHR_EVENT_CLOSED);
2182
}
2183

    
2184
static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2185
{
2186
    CharDriverState *chr = NULL;
2187
    TCPCharDriver *s = NULL;
2188
    int fd = -1;
2189
    int is_listen;
2190
    int is_waitconnect;
2191
    int do_nodelay;
2192
    int is_unix;
2193
    int is_telnet;
2194

    
2195
    is_listen      = qemu_opt_get_bool(opts, "server", 0);
2196
    is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2197
    is_telnet      = qemu_opt_get_bool(opts, "telnet", 0);
2198
    do_nodelay     = !qemu_opt_get_bool(opts, "delay", 1);
2199
    is_unix        = qemu_opt_get(opts, "path") != NULL;
2200
    if (!is_listen)
2201
        is_waitconnect = 0;
2202

    
2203
    chr = qemu_mallocz(sizeof(CharDriverState));
2204
    s = qemu_mallocz(sizeof(TCPCharDriver));
2205

    
2206
    if (is_unix) {
2207
        if (is_listen) {
2208
            fd = unix_listen_opts(opts);
2209
        } else {
2210
            fd = unix_connect_opts(opts);
2211
        }
2212
    } else {
2213
        if (is_listen) {
2214
            fd = inet_listen_opts(opts, 0);
2215
        } else {
2216
            fd = inet_connect_opts(opts);
2217
        }
2218
    }
2219
    if (fd < 0)
2220
        goto fail;
2221

    
2222
    if (!is_waitconnect)
2223
        socket_set_nonblock(fd);
2224

    
2225
    s->connected = 0;
2226
    s->fd = -1;
2227
    s->listen_fd = -1;
2228
    s->msgfd = -1;
2229
    s->is_unix = is_unix;
2230
    s->do_nodelay = do_nodelay && !is_unix;
2231

    
2232
    chr->opaque = s;
2233
    chr->chr_write = tcp_chr_write;
2234
    chr->chr_close = tcp_chr_close;
2235
    chr->get_msgfd = tcp_get_msgfd;
2236

    
2237
    if (is_listen) {
2238
        s->listen_fd = fd;
2239
        qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2240
        if (is_telnet)
2241
            s->do_telnetopt = 1;
2242

    
2243
    } else {
2244
        s->connected = 1;
2245
        s->fd = fd;
2246
        socket_set_nodelay(fd);
2247
        tcp_chr_connect(chr);
2248
    }
2249

    
2250
    /* for "info chardev" monitor command */
2251
    chr->filename = qemu_malloc(256);
2252
    if (is_unix) {
2253
        snprintf(chr->filename, 256, "unix:%s%s",
2254
                 qemu_opt_get(opts, "path"),
2255
                 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2256
    } else if (is_telnet) {
2257
        snprintf(chr->filename, 256, "telnet:%s:%s%s",
2258
                 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2259
                 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2260
    } else {
2261
        snprintf(chr->filename, 256, "tcp:%s:%s%s",
2262
                 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2263
                 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2264
    }
2265

    
2266
    if (is_listen && is_waitconnect) {
2267
        printf("QEMU waiting for connection on: %s\n",
2268
               chr->filename);
2269
        tcp_chr_accept(chr);
2270
        socket_set_nonblock(s->listen_fd);
2271
    }
2272
    return chr;
2273

    
2274
 fail:
2275
    if (fd >= 0)
2276
        closesocket(fd);
2277
    qemu_free(s);
2278
    qemu_free(chr);
2279
    return NULL;
2280
}
2281

    
2282
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2283
{
2284
    char host[65], port[33], width[8], height[8];
2285
    int pos;
2286
    const char *p;
2287
    QemuOpts *opts;
2288

    
2289
    opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2290
    if (NULL == opts)
2291
        return NULL;
2292

    
2293
    if (strstart(filename, "mon:", &p)) {
2294
        filename = p;
2295
        qemu_opt_set(opts, "mux", "on");
2296
    }
2297

    
2298
    if (strcmp(filename, "null")    == 0 ||
2299
        strcmp(filename, "pty")     == 0 ||
2300
        strcmp(filename, "msmouse") == 0 ||
2301
        strcmp(filename, "braille") == 0 ||
2302
        strcmp(filename, "stdio")   == 0) {
2303
        qemu_opt_set(opts, "backend", filename);
2304
        return opts;
2305
    }
2306
    if (strstart(filename, "vc", &p)) {
2307
        qemu_opt_set(opts, "backend", "vc");
2308
        if (*p == ':') {
2309
            if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2310
                /* pixels */
2311
                qemu_opt_set(opts, "width", width);
2312
                qemu_opt_set(opts, "height", height);
2313
            } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2314
                /* chars */
2315
                qemu_opt_set(opts, "cols", width);
2316
                qemu_opt_set(opts, "rows", height);
2317
            } else {
2318
                goto fail;
2319
            }
2320
        }
2321
        return opts;
2322
    }
2323
    if (strcmp(filename, "con:") == 0) {
2324
        qemu_opt_set(opts, "backend", "console");
2325
        return opts;
2326
    }
2327
    if (strstart(filename, "COM", NULL)) {
2328
        qemu_opt_set(opts, "backend", "serial");
2329
        qemu_opt_set(opts, "path", filename);
2330
        return opts;
2331
    }
2332
    if (strstart(filename, "file:", &p)) {
2333
        qemu_opt_set(opts, "backend", "file");
2334
        qemu_opt_set(opts, "path", p);
2335
        return opts;
2336
    }
2337
    if (strstart(filename, "pipe:", &p)) {
2338
        qemu_opt_set(opts, "backend", "pipe");
2339
        qemu_opt_set(opts, "path", p);
2340
        return opts;
2341
    }
2342
    if (strstart(filename, "tcp:", &p) ||
2343
        strstart(filename, "telnet:", &p)) {
2344
        if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2345
            host[0] = 0;
2346
            if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2347
                goto fail;
2348
        }
2349
        qemu_opt_set(opts, "backend", "socket");
2350
        qemu_opt_set(opts, "host", host);
2351
        qemu_opt_set(opts, "port", port);
2352
        if (p[pos] == ',') {
2353
            if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2354
                goto fail;
2355
        }
2356
        if (strstart(filename, "telnet:", &p))
2357
            qemu_opt_set(opts, "telnet", "on");
2358
        return opts;
2359
    }
2360
    if (strstart(filename, "udp:", &p)) {
2361
        qemu_opt_set(opts, "backend", "udp");
2362
        if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2363
            host[0] = 0;
2364
            if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2365
                goto fail;
2366
            }
2367
        }
2368
        qemu_opt_set(opts, "host", host);
2369
        qemu_opt_set(opts, "port", port);
2370
        if (p[pos] == '@') {
2371
            p += pos + 1;
2372
            if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2373
                host[0] = 0;
2374
                if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2375
                    goto fail;
2376
                }
2377
            }
2378
            qemu_opt_set(opts, "localaddr", host);
2379
            qemu_opt_set(opts, "localport", port);
2380
        }
2381
        return opts;
2382
    }
2383
    if (strstart(filename, "unix:", &p)) {
2384
        qemu_opt_set(opts, "backend", "socket");
2385
        if (qemu_opts_do_parse(opts, p, "path") != 0)
2386
            goto fail;
2387
        return opts;
2388
    }
2389
    if (strstart(filename, "/dev/parport", NULL) ||
2390
        strstart(filename, "/dev/ppi", NULL)) {
2391
        qemu_opt_set(opts, "backend", "parport");
2392
        qemu_opt_set(opts, "path", filename);
2393
        return opts;
2394
    }
2395
    if (strstart(filename, "/dev/", NULL)) {
2396
        qemu_opt_set(opts, "backend", "tty");
2397
        qemu_opt_set(opts, "path", filename);
2398
        return opts;
2399
    }
2400

    
2401
fail:
2402
    qemu_opts_del(opts);
2403
    return NULL;
2404
}
2405

    
2406
static const struct {
2407
    const char *name;
2408
    CharDriverState *(*open)(QemuOpts *opts);
2409
} backend_table[] = {
2410
    { .name = "null",      .open = qemu_chr_open_null },
2411
    { .name = "socket",    .open = qemu_chr_open_socket },
2412
    { .name = "udp",       .open = qemu_chr_open_udp },
2413
    { .name = "msmouse",   .open = qemu_chr_open_msmouse },
2414
    { .name = "vc",        .open = text_console_init },
2415
#ifdef _WIN32
2416
    { .name = "file",      .open = qemu_chr_open_win_file_out },
2417
    { .name = "pipe",      .open = qemu_chr_open_win_pipe },
2418
    { .name = "console",   .open = qemu_chr_open_win_con },
2419
    { .name = "serial",    .open = qemu_chr_open_win },
2420
#else
2421
    { .name = "file",      .open = qemu_chr_open_file_out },
2422
    { .name = "pipe",      .open = qemu_chr_open_pipe },
2423
    { .name = "pty",       .open = qemu_chr_open_pty },
2424
    { .name = "stdio",     .open = qemu_chr_open_stdio },
2425
#endif
2426
#ifdef CONFIG_BRLAPI
2427
    { .name = "braille",   .open = chr_baum_init },
2428
#endif
2429
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2430
    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2431
    || defined(__FreeBSD_kernel__)
2432
    { .name = "tty",       .open = qemu_chr_open_tty },
2433
#endif
2434
#if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2435
    || defined(__FreeBSD_kernel__)
2436
    { .name = "parport",   .open = qemu_chr_open_pp },
2437
#endif
2438
};
2439

    
2440
CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2441
                                    void (*init)(struct CharDriverState *s))
2442
{
2443
    CharDriverState *chr;
2444
    int i;
2445

    
2446
    if (qemu_opts_id(opts) == NULL) {
2447
        fprintf(stderr, "chardev: no id specified\n");
2448
        return NULL;
2449
    }
2450

    
2451
    for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2452
        if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2453
            break;
2454
    }
2455
    if (i == ARRAY_SIZE(backend_table)) {
2456
        fprintf(stderr, "chardev: backend \"%s\" not found\n",
2457
                qemu_opt_get(opts, "backend"));
2458
        return NULL;
2459
    }
2460

    
2461
    chr = backend_table[i].open(opts);
2462
    if (!chr) {
2463
        fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2464
                qemu_opt_get(opts, "backend"));
2465
        return NULL;
2466
    }
2467

    
2468
    if (!chr->filename)
2469
        chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2470
    chr->init = init;
2471
    QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2472

    
2473
    if (qemu_opt_get_bool(opts, "mux", 0)) {
2474
        CharDriverState *base = chr;
2475
        int len = strlen(qemu_opts_id(opts)) + 6;
2476
        base->label = qemu_malloc(len);
2477
        snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2478
        chr = qemu_chr_open_mux(base);
2479
        chr->filename = base->filename;
2480
        QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2481
    }
2482
    chr->label = qemu_strdup(qemu_opts_id(opts));
2483
    return chr;
2484
}
2485

    
2486
CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2487
{
2488
    const char *p;
2489
    CharDriverState *chr;
2490
    QemuOpts *opts;
2491

    
2492
    if (strstart(filename, "chardev:", &p)) {
2493
        return qemu_chr_find(p);
2494
    }
2495

    
2496
    opts = qemu_chr_parse_compat(label, filename);
2497
    if (!opts)
2498
        return NULL;
2499

    
2500
    chr = qemu_chr_open_opts(opts, init);
2501
    if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2502
        monitor_init(chr, MONITOR_USE_READLINE);
2503
    }
2504
    return chr;
2505
}
2506

    
2507
void qemu_chr_close(CharDriverState *chr)
2508
{
2509
    QTAILQ_REMOVE(&chardevs, chr, next);
2510
    if (chr->chr_close)
2511
        chr->chr_close(chr);
2512
    qemu_free(chr->filename);
2513
    qemu_free(chr->label);
2514
    qemu_free(chr);
2515
}
2516

    
2517
static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2518
{
2519
    QDict *chr_dict;
2520
    Monitor *mon = opaque;
2521

    
2522
    chr_dict = qobject_to_qdict(obj);
2523
    monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2524
                                         qdict_get_str(chr_dict, "filename"));
2525
}
2526

    
2527
void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2528
{
2529
    qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2530
}
2531

    
2532
void qemu_chr_info(Monitor *mon, QObject **ret_data)
2533
{
2534
    QList *chr_list;
2535
    CharDriverState *chr;
2536

    
2537
    chr_list = qlist_new();
2538

    
2539
    QTAILQ_FOREACH(chr, &chardevs, next) {
2540
        QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2541
                                          chr->label, chr->filename);
2542
        qlist_append_obj(chr_list, obj);
2543
    }
2544

    
2545
    *ret_data = QOBJECT(chr_list);
2546
}
2547

    
2548
CharDriverState *qemu_chr_find(const char *name)
2549
{
2550
    CharDriverState *chr;
2551

    
2552
    QTAILQ_FOREACH(chr, &chardevs, next) {
2553
        if (strcmp(chr->label, name) != 0)
2554
            continue;
2555
        return chr;
2556
    }
2557
    return NULL;
2558
}