qemu-char.c

   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 "console.h"
  27 #include "sysemu.h"
  28 #include "qemu-timer.h"
  29 #include "qemu-char.h"
  30 #include "block.h"
  31 #include "hw/usb.h"
  32 #include "hw/baum.h"
  33 #include "hw/msmouse.h"
  34
  35 #include <unistd.h>
  36 #include <fcntl.h>
  37 #include <signal.h>
  38 #include <time.h>
  39 #include <errno.h>
  40 #include <sys/time.h>
  41 #include <zlib.h>
  42
  43 #ifndef _WIN32
  44 #include <sys/times.h>
  45 #include <sys/wait.h>
  46 #include <termios.h>
  47 #include <sys/mman.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/resource.h>
  50 #include <sys/socket.h>
  51 #include <netinet/in.h>
  52 #include <net/if.h>
  53 #ifdef __NetBSD__
  54 #include <net/if_tap.h>
  55 #endif
  56 #ifdef __linux__
  57 #include <linux/if_tun.h>
  58 #endif
  59 #include <arpa/inet.h>
  60 #include <dirent.h>
  61 #include <netdb.h>
  62 #include <sys/select.h>
  63 #ifdef _BSD
  64 #include <sys/stat.h>
  65 #ifdef __FreeBSD__
  66 #include <libutil.h>
  67 #include <dev/ppbus/ppi.h>
  68 #include <dev/ppbus/ppbconf.h>
  69 #else
  70 #include <util.h>
  71 #endif
  72 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
  73 #include <freebsd/stdlib.h>
  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 /***********************************************************/
 102 /* character device */
 103
 104 static TAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
 105     TAILQ_HEAD_INITIALIZER(chardevs);
 106 static int initial_reset_issued;
 107
 108 static void qemu_chr_event(CharDriverState *s, int event)
 109 {
 110     if (!s->chr_event)
 111         return;
 112     s->chr_event(s->handler_opaque, event);
 113 }
 114
 115 static void qemu_chr_reset_bh(void *opaque)
 116 {
 117     CharDriverState *s = opaque;
 118     qemu_chr_event(s, CHR_EVENT_RESET);
 119     qemu_bh_delete(s->bh);
 120     s->bh = NULL;
 121 }
 122
 123 void qemu_chr_reset(CharDriverState *s)
 124 {
 125     if (s->bh == NULL && initial_reset_issued) {
 126         s->bh = qemu_bh_new(qemu_chr_reset_bh, s);
 127         qemu_bh_schedule(s->bh);
 128     }
 129 }
 130
 131 void qemu_chr_initial_reset(void)
 132 {
 133     CharDriverState *chr;
 134
 135     initial_reset_issued = 1;
 136
 137     TAILQ_FOREACH(chr, &chardevs, next) {
 138         qemu_chr_reset(chr);
 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 void qemu_chr_accept_input(CharDriverState *s)
 167 {
 168     if (s->chr_accept_input)
 169         s->chr_accept_input(s);
 170 }
 171
 172 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
 173 {
 174     char buf[4096];
 175     va_list ap;
 176     va_start(ap, fmt);
 177     vsnprintf(buf, sizeof(buf), fmt, ap);
 178     qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
 179     va_end(ap);
 180 }
 181
 182 void qemu_chr_send_event(CharDriverState *s, int event)
 183 {
 184     if (s->chr_send_event)
 185         s->chr_send_event(s, event);
 186 }
 187
 188 void qemu_chr_add_handlers(CharDriverState *s,
 189                            IOCanRWHandler *fd_can_read,
 190                            IOReadHandler *fd_read,
 191                            IOEventHandler *fd_event,
 192                            void *opaque)
 193 {
 194     s->chr_can_read = fd_can_read;
 195     s->chr_read = fd_read;
 196     s->chr_event = fd_event;
 197     s->handler_opaque = opaque;
 198     if (s->chr_update_read_handler)
 199         s->chr_update_read_handler(s);
 200 }
 201
 202 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 203 {
 204     return len;
 205 }
 206
 207 static CharDriverState *qemu_chr_open_null(void)
 208 {
 209     CharDriverState *chr;
 210
 211     chr = qemu_mallocz(sizeof(CharDriverState));
 212     chr->chr_write = null_chr_write;
 213     return chr;
 214 }
 215
 216 /* MUX driver for serial I/O splitting */
 217 static int term_timestamps;
 218 static int64_t term_timestamps_start;
 219 #define MAX_MUX 4
 220 #define MUX_BUFFER_SIZE 32      /* Must be a power of 2.  */
 221 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
 222 typedef struct {
 223     IOCanRWHandler *chr_can_read[MAX_MUX];
 224     IOReadHandler *chr_read[MAX_MUX];
 225     IOEventHandler *chr_event[MAX_MUX];
 226     void *ext_opaque[MAX_MUX];
 227     CharDriverState *drv;
 228     int mux_cnt;
 229     int term_got_escape;
 230     int max_size;
 231     /* Intermediate input buffer allows to catch escape sequences even if the
 232        currently active device is not accepting any input - but only until it
 233        is full as well. */
 234     unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
 235     int prod[MAX_MUX];
 236     int cons[MAX_MUX];
 237 } MuxDriver;
 238
 239
 240 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 241 {
 242     MuxDriver *d = chr->opaque;
 243     int ret;
 244     if (!term_timestamps) {
 245         ret = d->drv->chr_write(d->drv, buf, len);
 246     } else {
 247         int i;
 248
 249         ret = 0;
 250         for(i = 0; i < len; i++) {
 251             ret += d->drv->chr_write(d->drv, buf+i, 1);
 252             if (buf[i] == '\n') {
 253                 char buf1[64];
 254                 int64_t ti;
 255                 int secs;
 256
 257                 ti = qemu_get_clock(rt_clock);
 258                 if (term_timestamps_start == -1)
 259                     term_timestamps_start = ti;
 260                 ti -= term_timestamps_start;
 261                 secs = ti / 1000;
 262                 snprintf(buf1, sizeof(buf1),
 263                          "[%02d:%02d:%02d.%03d] ",
 264                          secs / 3600,
 265                          (secs / 60) % 60,
 266                          secs % 60,
 267                          (int)(ti % 1000));
 268                 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
 269             }
 270         }
 271     }
 272     return ret;
 273 }
 274
 275 static const char * const mux_help[] = {
 276     "% h    print this help\n\r",
 277     "% x    exit emulator\n\r",
 278     "% s    save disk data back to file (if -snapshot)\n\r",
 279     "% t    toggle console timestamps\n\r"
 280     "% b    send break (magic sysrq)\n\r",
 281     "% c    switch between console and monitor\n\r",
 282     "% %  sends %\n\r",
 283     NULL
 284 };
 285
 286 int term_escape_char = 0x01; /* ctrl-a is used for escape */
 287 static void mux_print_help(CharDriverState *chr)
 288 {
 289     int i, j;
 290     char ebuf[15] = "Escape-Char";
 291     char cbuf[50] = "\n\r";
 292
 293     if (term_escape_char > 0 && term_escape_char < 26) {
 294         snprintf(cbuf, sizeof(cbuf), "\n\r");
 295         snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
 296     } else {
 297         snprintf(cbuf, sizeof(cbuf),
 298                  "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
 299                  term_escape_char);
 300     }
 301     chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
 302     for (i = 0; mux_help[i] != NULL; i++) {
 303         for (j=0; mux_help[i][j] != '\0'; j++) {
 304             if (mux_help[i][j] == '%')
 305                 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
 306             else
 307                 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
 308         }
 309     }
 310 }
 311
 312 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
 313 {
 314     if (d->term_got_escape) {
 315         d->term_got_escape = 0;
 316         if (ch == term_escape_char)
 317             goto send_char;
 318         switch(ch) {
 319         case '?':
 320         case 'h':
 321             mux_print_help(chr);
 322             break;
 323         case 'x':
 324             {
 325                  const char *term =  "QEMU: Terminated\n\r";
 326                  chr->chr_write(chr,(uint8_t *)term,strlen(term));
 327                  exit(0);
 328                  break;
 329             }
 330         case 's':
 331             {
 332                 int i;
 333                 for (i = 0; i < nb_drives; i++) {
 334                         bdrv_commit(drives_table[i].bdrv);
 335                 }
 336             }
 337             break;
 338         case 'b':
 339             qemu_chr_event(chr, CHR_EVENT_BREAK);
 340             break;
 341         case 'c':
 342             /* Switch to the next registered device */
 343             chr->focus++;
 344             if (chr->focus >= d->mux_cnt)
 345                 chr->focus = 0;
 346             break;
 347        case 't':
 348            term_timestamps = !term_timestamps;
 349            term_timestamps_start = -1;
 350            break;
 351         }
 352     } else if (ch == term_escape_char) {
 353         d->term_got_escape = 1;
 354     } else {
 355     send_char:
 356         return 1;
 357     }
 358     return 0;
 359 }
 360
 361 static void mux_chr_accept_input(CharDriverState *chr)
 362 {
 363     int m = chr->focus;
 364     MuxDriver *d = chr->opaque;
 365
 366     while (d->prod[m] != d->cons[m] &&
 367            d->chr_can_read[m] &&
 368            d->chr_can_read[m](d->ext_opaque[m])) {
 369         d->chr_read[m](d->ext_opaque[m],
 370                        &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
 371     }
 372 }
 373
 374 static int mux_chr_can_read(void *opaque)
 375 {
 376     CharDriverState *chr = opaque;
 377     MuxDriver *d = chr->opaque;
 378     int m = chr->focus;
 379
 380     if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
 381         return 1;
 382     if (d->chr_can_read[m])
 383         return d->chr_can_read[m](d->ext_opaque[m]);
 384     return 0;
 385 }
 386
 387 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
 388 {
 389     CharDriverState *chr = opaque;
 390     MuxDriver *d = chr->opaque;
 391     int m = chr->focus;
 392     int i;
 393
 394     mux_chr_accept_input (opaque);
 395
 396     for(i = 0; i < size; i++)
 397         if (mux_proc_byte(chr, d, buf[i])) {
 398             if (d->prod[m] == d->cons[m] &&
 399                 d->chr_can_read[m] &&
 400                 d->chr_can_read[m](d->ext_opaque[m]))
 401                 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
 402             else
 403                 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
 404         }
 405 }
 406
 407 static void mux_chr_event(void *opaque, int event)
 408 {
 409     CharDriverState *chr = opaque;
 410     MuxDriver *d = chr->opaque;
 411     int i;
 412
 413     /* Send the event to all registered listeners */
 414     for (i = 0; i < d->mux_cnt; i++)
 415         if (d->chr_event[i])
 416             d->chr_event[i](d->ext_opaque[i], event);
 417 }
 418
 419 static void mux_chr_update_read_handler(CharDriverState *chr)
 420 {
 421     MuxDriver *d = chr->opaque;
 422
 423     if (d->mux_cnt >= MAX_MUX) {
 424         fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
 425         return;
 426     }
 427     d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
 428     d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
 429     d->chr_read[d->mux_cnt] = chr->chr_read;
 430     d->chr_event[d->mux_cnt] = chr->chr_event;
 431     /* Fix up the real driver with mux routines */
 432     if (d->mux_cnt == 0) {
 433         qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
 434                               mux_chr_event, chr);
 435     }
 436     chr->focus = d->mux_cnt;
 437     d->mux_cnt++;
 438 }
 439
 440 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
 441 {
 442     CharDriverState *chr;
 443     MuxDriver *d;
 444
 445     chr = qemu_mallocz(sizeof(CharDriverState));
 446     d = qemu_mallocz(sizeof(MuxDriver));
 447
 448     chr->opaque = d;
 449     d->drv = drv;
 450     chr->focus = -1;
 451     chr->chr_write = mux_chr_write;
 452     chr->chr_update_read_handler = mux_chr_update_read_handler;
 453     chr->chr_accept_input = mux_chr_accept_input;
 454     return chr;
 455 }
 456
 457
 458 #ifdef _WIN32
 459 int send_all(int fd, const void *buf, int len1)
 460 {
 461     int ret, len;
 462
 463     len = len1;
 464     while (len > 0) {
 465         ret = send(fd, buf, len, 0);
 466         if (ret < 0) {
 467             errno = WSAGetLastError();
 468             if (errno != WSAEWOULDBLOCK) {
 469                 return -1;
 470             }
 471         } else if (ret == 0) {
 472             break;
 473         } else {
 474             buf += ret;
 475             len -= ret;
 476         }
 477     }
 478     return len1 - len;
 479 }
 480
 481 #else
 482
 483 static int unix_write(int fd, const uint8_t *buf, int len1)
 484 {
 485     int ret, len;
 486
 487     len = len1;
 488     while (len > 0) {
 489         ret = write(fd, buf, len);
 490         if (ret < 0) {
 491             if (errno != EINTR && errno != EAGAIN)
 492                 return -1;
 493         } else if (ret == 0) {
 494             break;
 495         } else {
 496             buf += ret;
 497             len -= ret;
 498         }
 499     }
 500     return len1 - len;
 501 }
 502
 503 int send_all(int fd, const void *buf, int len1)
 504 {
 505     return unix_write(fd, buf, len1);
 506 }
 507 #endif /* !_WIN32 */
 508
 509 #ifndef _WIN32
 510
 511 typedef struct {
 512     int fd_in, fd_out;
 513     int max_size;
 514 } FDCharDriver;
 515
 516 #define STDIO_MAX_CLIENTS 1
 517 static int stdio_nb_clients = 0;
 518
 519 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 520 {
 521     FDCharDriver *s = chr->opaque;
 522     return send_all(s->fd_out, buf, len);
 523 }
 524
 525 static int fd_chr_read_poll(void *opaque)
 526 {
 527     CharDriverState *chr = opaque;
 528     FDCharDriver *s = chr->opaque;
 529
 530     s->max_size = qemu_chr_can_read(chr);
 531     return s->max_size;
 532 }
 533
 534 static void fd_chr_read(void *opaque)
 535 {
 536     CharDriverState *chr = opaque;
 537     FDCharDriver *s = chr->opaque;
 538     int size, len;
 539     uint8_t buf[1024];
 540
 541     len = sizeof(buf);
 542     if (len > s->max_size)
 543         len = s->max_size;
 544     if (len == 0)
 545         return;
 546     size = read(s->fd_in, buf, len);
 547     if (size == 0) {
 548         /* FD has been closed. Remove it from the active list.  */
 549         qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
 550         return;
 551     }
 552     if (size > 0) {
 553         qemu_chr_read(chr, buf, size);
 554     }
 555 }
 556
 557 static void fd_chr_update_read_handler(CharDriverState *chr)
 558 {
 559     FDCharDriver *s = chr->opaque;
 560
 561     if (s->fd_in >= 0) {
 562         if (nographic && s->fd_in == 0) {
 563         } else {
 564             qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
 565                                  fd_chr_read, NULL, chr);
 566         }
 567     }
 568 }
 569
 570 static void fd_chr_close(struct CharDriverState *chr)
 571 {
 572     FDCharDriver *s = chr->opaque;
 573
 574     if (s->fd_in >= 0) {
 575         if (nographic && s->fd_in == 0) {
 576         } else {
 577             qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
 578         }
 579     }
 580
 581     qemu_free(s);
 582 }
 583
 584 /* open a character device to a unix fd */
 585 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
 586 {
 587     CharDriverState *chr;
 588     FDCharDriver *s;
 589
 590     chr = qemu_mallocz(sizeof(CharDriverState));
 591     s = qemu_mallocz(sizeof(FDCharDriver));
 592     s->fd_in = fd_in;
 593     s->fd_out = fd_out;
 594     chr->opaque = s;
 595     chr->chr_write = fd_chr_write;
 596     chr->chr_update_read_handler = fd_chr_update_read_handler;
 597     chr->chr_close = fd_chr_close;
 598
 599     qemu_chr_reset(chr);
 600
 601     return chr;
 602 }
 603
 604 static CharDriverState *qemu_chr_open_file_out(const char *file_out)
 605 {
 606     int fd_out;
 607
 608     TFR(fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
 609     if (fd_out < 0)
 610         return NULL;
 611     return qemu_chr_open_fd(-1, fd_out);
 612 }
 613
 614 static CharDriverState *qemu_chr_open_pipe(const char *filename)
 615 {
 616     int fd_in, fd_out;
 617     char filename_in[256], filename_out[256];
 618
 619     snprintf(filename_in, 256, "%s.in", filename);
 620     snprintf(filename_out, 256, "%s.out", filename);
 621     TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
 622     TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
 623     if (fd_in < 0 || fd_out < 0) {
 624         if (fd_in >= 0)
 625             close(fd_in);
 626         if (fd_out >= 0)
 627             close(fd_out);
 628         TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
 629         if (fd_in < 0)
 630             return NULL;
 631     }
 632     return qemu_chr_open_fd(fd_in, fd_out);
 633 }
 634
 635
 636 /* for STDIO, we handle the case where several clients use it
 637    (nographic mode) */
 638
 639 #define TERM_FIFO_MAX_SIZE 1
 640
 641 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
 642 static int term_fifo_size;
 643
 644 static int stdio_read_poll(void *opaque)
 645 {
 646     CharDriverState *chr = opaque;
 647
 648     /* try to flush the queue if needed */
 649     if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
 650         qemu_chr_read(chr, term_fifo, 1);
 651         term_fifo_size = 0;
 652     }
 653     /* see if we can absorb more chars */
 654     if (term_fifo_size == 0)
 655         return 1;
 656     else
 657         return 0;
 658 }
 659
 660 static void stdio_read(void *opaque)
 661 {
 662     int size;
 663     uint8_t buf[1];
 664     CharDriverState *chr = opaque;
 665
 666     size = read(0, buf, 1);
 667     if (size == 0) {
 668         /* stdin has been closed. Remove it from the active list.  */
 669         qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
 670         return;
 671     }
 672     if (size > 0) {
 673         if (qemu_chr_can_read(chr) > 0) {
 674             qemu_chr_read(chr, buf, 1);
 675         } else if (term_fifo_size == 0) {
 676             term_fifo[term_fifo_size++] = buf[0];
 677         }
 678     }
 679 }
 680
 681 /* init terminal so that we can grab keys */
 682 static struct termios oldtty;
 683 static int old_fd0_flags;
 684 static int term_atexit_done;
 685
 686 static void term_exit(void)
 687 {
 688     tcsetattr (0, TCSANOW, &oldtty);
 689     fcntl(0, F_SETFL, old_fd0_flags);
 690 }
 691
 692 static void term_init(void)
 693 {
 694     struct termios tty;
 695
 696     tcgetattr (0, &tty);
 697     oldtty = tty;
 698     old_fd0_flags = fcntl(0, F_GETFL);
 699
 700     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 701                           |INLCR|IGNCR|ICRNL|IXON);
 702     tty.c_oflag |= OPOST;
 703     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 704     /* if graphical mode, we allow Ctrl-C handling */
 705     if (nographic)
 706         tty.c_lflag &= ~ISIG;
 707     tty.c_cflag &= ~(CSIZE|PARENB);
 708     tty.c_cflag |= CS8;
 709     tty.c_cc[VMIN] = 1;
 710     tty.c_cc[VTIME] = 0;
 711
 712     tcsetattr (0, TCSANOW, &tty);
 713
 714     if (!term_atexit_done++)
 715         atexit(term_exit);
 716
 717     fcntl(0, F_SETFL, O_NONBLOCK);
 718 }
 719
 720 static void qemu_chr_close_stdio(struct CharDriverState *chr)
 721 {
 722     term_exit();
 723     stdio_nb_clients--;
 724     qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
 725     fd_chr_close(chr);
 726 }
 727
 728 static CharDriverState *qemu_chr_open_stdio(void)
 729 {
 730     CharDriverState *chr;
 731
 732     if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
 733         return NULL;
 734     chr = qemu_chr_open_fd(0, 1);
 735     chr->chr_close = qemu_chr_close_stdio;
 736     qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
 737     stdio_nb_clients++;
 738     term_init();
 739
 740     return chr;
 741 }
 742
 743 #ifdef __sun__
 744 /* Once Solaris has openpty(), this is going to be removed. */
 745 int openpty(int *amaster, int *aslave, char *name,
 746             struct termios *termp, struct winsize *winp)
 747 {
 748         const char *slave;
 749         int mfd = -1, sfd = -1;
 750
 751         *amaster = *aslave = -1;
 752
 753         mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
 754         if (mfd < 0)
 755                 goto err;
 756
 757         if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
 758                 goto err;
 759
 760         if ((slave = ptsname(mfd)) == NULL)
 761                 goto err;
 762
 763         if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
 764                 goto err;
 765
 766         if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
 767             (termp != NULL && tcgetattr(sfd, termp) < 0))
 768                 goto err;
 769
 770         if (amaster)
 771                 *amaster = mfd;
 772         if (aslave)
 773                 *aslave = sfd;
 774         if (winp)
 775                 ioctl(sfd, TIOCSWINSZ, winp);
 776
 777         return 0;
 778
 779 err:
 780         if (sfd != -1)
 781                 close(sfd);
 782         close(mfd);
 783         return -1;
 784 }
 785
 786 void cfmakeraw (struct termios *termios_p)
 787 {
 788         termios_p->c_iflag &=
 789                 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
 790         termios_p->c_oflag &= ~OPOST;
 791         termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
 792         termios_p->c_cflag &= ~(CSIZE|PARENB);
 793         termios_p->c_cflag |= CS8;
 794
 795         termios_p->c_cc[VMIN] = 0;
 796         termios_p->c_cc[VTIME] = 0;
 797 }
 798 #endif
 799
 800 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
 801     || defined(__NetBSD__) || defined(__OpenBSD__)
 802
 803 typedef struct {
 804     int fd;
 805     int connected;
 806     int polling;
 807     int read_bytes;
 808     QEMUTimer *timer;
 809 } PtyCharDriver;
 810
 811 static void pty_chr_update_read_handler(CharDriverState *chr);
 812 static void pty_chr_state(CharDriverState *chr, int connected);
 813
 814 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 815 {
 816     PtyCharDriver *s = chr->opaque;
 817
 818     if (!s->connected) {
 819         /* guest sends data, check for (re-)connect */
 820         pty_chr_update_read_handler(chr);
 821         return 0;
 822     }
 823     return send_all(s->fd, buf, len);
 824 }
 825
 826 static int pty_chr_read_poll(void *opaque)
 827 {
 828     CharDriverState *chr = opaque;
 829     PtyCharDriver *s = chr->opaque;
 830
 831     s->read_bytes = qemu_chr_can_read(chr);
 832     return s->read_bytes;
 833 }
 834
 835 static void pty_chr_read(void *opaque)
 836 {
 837     CharDriverState *chr = opaque;
 838     PtyCharDriver *s = chr->opaque;
 839     int size, len;
 840     uint8_t buf[1024];
 841
 842     len = sizeof(buf);
 843     if (len > s->read_bytes)
 844         len = s->read_bytes;
 845     if (len == 0)
 846         return;
 847     size = read(s->fd, buf, len);
 848     if ((size == -1 && errno == EIO) ||
 849         (size == 0)) {
 850         pty_chr_state(chr, 0);
 851         return;
 852     }
 853     if (size > 0) {
 854         pty_chr_state(chr, 1);
 855         qemu_chr_read(chr, buf, size);
 856     }
 857 }
 858
 859 static void pty_chr_update_read_handler(CharDriverState *chr)
 860 {
 861     PtyCharDriver *s = chr->opaque;
 862
 863     qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
 864                          pty_chr_read, NULL, chr);
 865     s->polling = 1;
 866     /*
 867      * Short timeout here: just need wait long enougth that qemu makes
 868      * it through the poll loop once.  When reconnected we want a
 869      * short timeout so we notice it almost instantly.  Otherwise
 870      * read() gives us -EIO instantly, making pty_chr_state() reset the
 871      * timeout to the normal (much longer) poll interval before the
 872      * timer triggers.
 873      */
 874     qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
 875 }
 876
 877 static void pty_chr_state(CharDriverState *chr, int connected)
 878 {
 879     PtyCharDriver *s = chr->opaque;
 880
 881     if (!connected) {
 882         qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
 883         s->connected = 0;
 884         s->polling = 0;
 885         /* (re-)connect poll interval for idle guests: once per second.
 886          * We check more frequently in case the guests sends data to
 887          * the virtual device linked to our pty. */
 888         qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
 889     } else {
 890         if (!s->connected)
 891             qemu_chr_reset(chr);
 892         s->connected = 1;
 893     }
 894 }
 895
 896 static void pty_chr_timer(void *opaque)
 897 {
 898     struct CharDriverState *chr = opaque;
 899     PtyCharDriver *s = chr->opaque;
 900
 901     if (s->connected)
 902         return;
 903     if (s->polling) {
 904         /* If we arrive here without polling being cleared due
 905          * read returning -EIO, then we are (re-)connected */
 906         pty_chr_state(chr, 1);
 907         return;
 908     }
 909
 910     /* Next poll ... */
 911     pty_chr_update_read_handler(chr);
 912 }
 913
 914 static void pty_chr_close(struct CharDriverState *chr)
 915 {
 916     PtyCharDriver *s = chr->opaque;
 917
 918     qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
 919     close(s->fd);
 920     qemu_del_timer(s->timer);
 921     qemu_free_timer(s->timer);
 922     qemu_free(s);
 923 }
 924
 925 static CharDriverState *qemu_chr_open_pty(void)
 926 {
 927     CharDriverState *chr;
 928     PtyCharDriver *s;
 929     struct termios tty;
 930     int slave_fd, len;
 931 #if defined(__OpenBSD__)
 932     char pty_name[PATH_MAX];
 933 #define q_ptsname(x) pty_name
 934 #else
 935     char *pty_name = NULL;
 936 #define q_ptsname(x) ptsname(x)
 937 #endif
 938
 939     chr = qemu_mallocz(sizeof(CharDriverState));
 940     s = qemu_mallocz(sizeof(PtyCharDriver));
 941
 942     if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
 943         return NULL;
 944     }
 945
 946     /* Set raw attributes on the pty. */
 947     tcgetattr(slave_fd, &tty);
 948     cfmakeraw(&tty);
 949     tcsetattr(slave_fd, TCSAFLUSH, &tty);
 950     close(slave_fd);
 951
 952     len = strlen(q_ptsname(s->fd)) + 5;
 953     chr->filename = qemu_malloc(len);
 954     snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
 955     fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
 956
 957     chr->opaque = s;
 958     chr->chr_write = pty_chr_write;
 959     chr->chr_update_read_handler = pty_chr_update_read_handler;
 960     chr->chr_close = pty_chr_close;
 961
 962     s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
 963
 964     return chr;
 965 }
 966
 967 static void tty_serial_init(int fd, int speed,
 968                             int parity, int data_bits, int stop_bits)
 969 {
 970     struct termios tty;
 971     speed_t spd;
 972
 973 #if 0
 974     printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
 975            speed, parity, data_bits, stop_bits);
 976 #endif
 977     tcgetattr (fd, &tty);
 978
 979 #define MARGIN 1.1
 980     if (speed <= 50 * MARGIN)
 981         spd = B50;
 982     else if (speed <= 75 * MARGIN)
 983         spd = B75;
 984     else if (speed <= 300 * MARGIN)
 985         spd = B300;
 986     else if (speed <= 600 * MARGIN)
 987         spd = B600;
 988     else if (speed <= 1200 * MARGIN)
 989         spd = B1200;
 990     else if (speed <= 2400 * MARGIN)
 991         spd = B2400;
 992     else if (speed <= 4800 * MARGIN)
 993         spd = B4800;
 994     else if (speed <= 9600 * MARGIN)
 995         spd = B9600;
 996     else if (speed <= 19200 * MARGIN)
 997         spd = B19200;
 998     else if (speed <= 38400 * MARGIN)
 999         spd = B38400;
1000     else if (speed <= 57600 * MARGIN)
1001         spd = B57600;
1002     else if (speed <= 115200 * MARGIN)
1003         spd = B115200;
1004     else
1005         spd = B115200;
1006
1007     cfsetispeed(&tty, spd);
1008     cfsetospeed(&tty, spd);
1009
1010     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1011                           |INLCR|IGNCR|ICRNL|IXON);
1012     tty.c_oflag |= OPOST;
1013     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1014     tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1015     switch(data_bits) {
1016     default:
1017     case 8:
1018         tty.c_cflag |= CS8;
1019         break;
1020     case 7:
1021         tty.c_cflag |= CS7;
1022         break;
1023     case 6:
1024         tty.c_cflag |= CS6;
1025         break;
1026     case 5:
1027         tty.c_cflag |= CS5;
1028         break;
1029     }
1030     switch(parity) {
1031     default:
1032     case 'N':
1033         break;
1034     case 'E':
1035         tty.c_cflag |= PARENB;
1036         break;
1037     case 'O':
1038         tty.c_cflag |= PARENB | PARODD;
1039         break;
1040     }
1041     if (stop_bits == 2)
1042         tty.c_cflag |= CSTOPB;
1043
1044     tcsetattr (fd, TCSANOW, &tty);
1045 }
1046
1047 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1048 {
1049     FDCharDriver *s = chr->opaque;
1050
1051     switch(cmd) {
1052     case CHR_IOCTL_SERIAL_SET_PARAMS:
1053         {
1054             QEMUSerialSetParams *ssp = arg;
1055             tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1056                             ssp->data_bits, ssp->stop_bits);
1057         }
1058         break;
1059     case CHR_IOCTL_SERIAL_SET_BREAK:
1060         {
1061             int enable = *(int *)arg;
1062             if (enable)
1063                 tcsendbreak(s->fd_in, 1);
1064         }
1065         break;
1066     case CHR_IOCTL_SERIAL_GET_TIOCM:
1067         {
1068             int sarg = 0;
1069             int *targ = (int *)arg;
1070             ioctl(s->fd_in, TIOCMGET, &sarg);
1071             *targ = 0;
1072             if (sarg & TIOCM_CTS)
1073                 *targ |= CHR_TIOCM_CTS;
1074             if (sarg & TIOCM_CAR)
1075                 *targ |= CHR_TIOCM_CAR;
1076             if (sarg & TIOCM_DSR)
1077                 *targ |= CHR_TIOCM_DSR;
1078             if (sarg & TIOCM_RI)
1079                 *targ |= CHR_TIOCM_RI;
1080             if (sarg & TIOCM_DTR)
1081                 *targ |= CHR_TIOCM_DTR;
1082             if (sarg & TIOCM_RTS)
1083                 *targ |= CHR_TIOCM_RTS;
1084         }
1085         break;
1086     case CHR_IOCTL_SERIAL_SET_TIOCM:
1087         {
1088             int sarg = *(int *)arg;
1089             int targ = 0;
1090             ioctl(s->fd_in, TIOCMGET, &targ);
1091             targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1092                      | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1093             if (sarg & CHR_TIOCM_CTS)
1094                 targ |= TIOCM_CTS;
1095             if (sarg & CHR_TIOCM_CAR)
1096                 targ |= TIOCM_CAR;
1097             if (sarg & CHR_TIOCM_DSR)
1098                 targ |= TIOCM_DSR;
1099             if (sarg & CHR_TIOCM_RI)
1100                 targ |= TIOCM_RI;
1101             if (sarg & CHR_TIOCM_DTR)
1102                 targ |= TIOCM_DTR;
1103             if (sarg & CHR_TIOCM_RTS)
1104                 targ |= TIOCM_RTS;
1105             ioctl(s->fd_in, TIOCMSET, &targ);
1106         }
1107         break;
1108     default:
1109         return -ENOTSUP;
1110     }
1111     return 0;
1112 }
1113
1114 static CharDriverState *qemu_chr_open_tty(const char *filename)
1115 {
1116     CharDriverState *chr;
1117     int fd;
1118
1119     TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1120     tty_serial_init(fd, 115200, 'N', 8, 1);
1121     chr = qemu_chr_open_fd(fd, fd);
1122     if (!chr) {
1123         close(fd);
1124         return NULL;
1125     }
1126     chr->chr_ioctl = tty_serial_ioctl;
1127     qemu_chr_reset(chr);
1128     return chr;
1129 }
1130 #else  /* ! __linux__ && ! __sun__ */
1131 static CharDriverState *qemu_chr_open_pty(void)
1132 {
1133     return NULL;
1134 }
1135 #endif /* __linux__ || __sun__ */
1136
1137 #if defined(__linux__)
1138 typedef struct {
1139     int fd;
1140     int mode;
1141 } ParallelCharDriver;
1142
1143 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1144 {
1145     if (s->mode != mode) {
1146         int m = mode;
1147         if (ioctl(s->fd, PPSETMODE, &m) < 0)
1148             return 0;
1149         s->mode = mode;
1150     }
1151     return 1;
1152 }
1153
1154 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1155 {
1156     ParallelCharDriver *drv = chr->opaque;
1157     int fd = drv->fd;
1158     uint8_t b;
1159
1160     switch(cmd) {
1161     case CHR_IOCTL_PP_READ_DATA:
1162         if (ioctl(fd, PPRDATA, &b) < 0)
1163             return -ENOTSUP;
1164         *(uint8_t *)arg = b;
1165         break;
1166     case CHR_IOCTL_PP_WRITE_DATA:
1167         b = *(uint8_t *)arg;
1168         if (ioctl(fd, PPWDATA, &b) < 0)
1169             return -ENOTSUP;
1170         break;
1171     case CHR_IOCTL_PP_READ_CONTROL:
1172         if (ioctl(fd, PPRCONTROL, &b) < 0)
1173             return -ENOTSUP;
1174         /* Linux gives only the lowest bits, and no way to know data
1175            direction! For better compatibility set the fixed upper
1176            bits. */
1177         *(uint8_t *)arg = b | 0xc0;
1178         break;
1179     case CHR_IOCTL_PP_WRITE_CONTROL:
1180         b = *(uint8_t *)arg;
1181         if (ioctl(fd, PPWCONTROL, &b) < 0)
1182             return -ENOTSUP;
1183         break;
1184     case CHR_IOCTL_PP_READ_STATUS:
1185         if (ioctl(fd, PPRSTATUS, &b) < 0)
1186             return -ENOTSUP;
1187         *(uint8_t *)arg = b;
1188         break;
1189     case CHR_IOCTL_PP_DATA_DIR:
1190         if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1191             return -ENOTSUP;
1192         break;
1193     case CHR_IOCTL_PP_EPP_READ_ADDR:
1194         if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1195             struct ParallelIOArg *parg = arg;
1196             int n = read(fd, parg->buffer, parg->count);
1197             if (n != parg->count) {
1198                 return -EIO;
1199             }
1200         }
1201         break;
1202     case CHR_IOCTL_PP_EPP_READ:
1203         if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1204             struct ParallelIOArg *parg = arg;
1205             int n = read(fd, parg->buffer, parg->count);
1206             if (n != parg->count) {
1207                 return -EIO;
1208             }
1209         }
1210         break;
1211     case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1212         if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1213             struct ParallelIOArg *parg = arg;
1214             int n = write(fd, parg->buffer, parg->count);
1215             if (n != parg->count) {
1216                 return -EIO;
1217             }
1218         }
1219         break;
1220     case CHR_IOCTL_PP_EPP_WRITE:
1221         if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1222             struct ParallelIOArg *parg = arg;
1223             int n = write(fd, parg->buffer, parg->count);
1224             if (n != parg->count) {
1225                 return -EIO;
1226             }
1227         }
1228         break;
1229     default:
1230         return -ENOTSUP;
1231     }
1232     return 0;
1233 }
1234
1235 static void pp_close(CharDriverState *chr)
1236 {
1237     ParallelCharDriver *drv = chr->opaque;
1238     int fd = drv->fd;
1239
1240     pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1241     ioctl(fd, PPRELEASE);
1242     close(fd);
1243     qemu_free(drv);
1244 }
1245
1246 static CharDriverState *qemu_chr_open_pp(const char *filename)
1247 {
1248     CharDriverState *chr;
1249     ParallelCharDriver *drv;
1250     int fd;
1251
1252     TFR(fd = open(filename, O_RDWR));
1253     if (fd < 0)
1254         return NULL;
1255
1256     if (ioctl(fd, PPCLAIM) < 0) {
1257         close(fd);
1258         return NULL;
1259     }
1260
1261     drv = qemu_mallocz(sizeof(ParallelCharDriver));
1262     drv->fd = fd;
1263     drv->mode = IEEE1284_MODE_COMPAT;
1264
1265     chr = qemu_mallocz(sizeof(CharDriverState));
1266     chr->chr_write = null_chr_write;
1267     chr->chr_ioctl = pp_ioctl;
1268     chr->chr_close = pp_close;
1269     chr->opaque = drv;
1270
1271     qemu_chr_reset(chr);
1272
1273     return chr;
1274 }
1275 #endif /* __linux__ */
1276
1277 #if defined(__FreeBSD__)
1278 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1279 {
1280     int fd = (int)chr->opaque;
1281     uint8_t b;
1282
1283     switch(cmd) {
1284     case CHR_IOCTL_PP_READ_DATA:
1285         if (ioctl(fd, PPIGDATA, &b) < 0)
1286             return -ENOTSUP;
1287         *(uint8_t *)arg = b;
1288         break;
1289     case CHR_IOCTL_PP_WRITE_DATA:
1290         b = *(uint8_t *)arg;
1291         if (ioctl(fd, PPISDATA, &b) < 0)
1292             return -ENOTSUP;
1293         break;
1294     case CHR_IOCTL_PP_READ_CONTROL:
1295         if (ioctl(fd, PPIGCTRL, &b) < 0)
1296             return -ENOTSUP;
1297         *(uint8_t *)arg = b;
1298         break;
1299     case CHR_IOCTL_PP_WRITE_CONTROL:
1300         b = *(uint8_t *)arg;
1301         if (ioctl(fd, PPISCTRL, &b) < 0)
1302             return -ENOTSUP;
1303         break;
1304     case CHR_IOCTL_PP_READ_STATUS:
1305         if (ioctl(fd, PPIGSTATUS, &b) < 0)
1306             return -ENOTSUP;
1307         *(uint8_t *)arg = b;
1308         break;
1309     default:
1310         return -ENOTSUP;
1311     }
1312     return 0;
1313 }
1314
1315 static CharDriverState *qemu_chr_open_pp(const char *filename)
1316 {
1317     CharDriverState *chr;
1318     int fd;
1319
1320     fd = open(filename, O_RDWR);
1321     if (fd < 0)
1322         return NULL;
1323
1324     chr = qemu_mallocz(sizeof(CharDriverState));
1325     chr->opaque = (void *)fd;
1326     chr->chr_write = null_chr_write;
1327     chr->chr_ioctl = pp_ioctl;
1328     return chr;
1329 }
1330 #endif
1331
1332 #else /* _WIN32 */
1333
1334 typedef struct {
1335     int max_size;
1336     HANDLE hcom, hrecv, hsend;
1337     OVERLAPPED orecv, osend;
1338     BOOL fpipe;
1339     DWORD len;
1340 } WinCharState;
1341
1342 #define NSENDBUF 2048
1343 #define NRECVBUF 2048
1344 #define MAXCONNECT 1
1345 #define NTIMEOUT 5000
1346
1347 static int win_chr_poll(void *opaque);
1348 static int win_chr_pipe_poll(void *opaque);
1349
1350 static void win_chr_close(CharDriverState *chr)
1351 {
1352     WinCharState *s = chr->opaque;
1353
1354     if (s->hsend) {
1355         CloseHandle(s->hsend);
1356         s->hsend = NULL;
1357     }
1358     if (s->hrecv) {
1359         CloseHandle(s->hrecv);
1360         s->hrecv = NULL;
1361     }
1362     if (s->hcom) {
1363         CloseHandle(s->hcom);
1364         s->hcom = NULL;
1365     }
1366     if (s->fpipe)
1367         qemu_del_polling_cb(win_chr_pipe_poll, chr);
1368     else
1369         qemu_del_polling_cb(win_chr_poll, chr);
1370 }
1371
1372 static int win_chr_init(CharDriverState *chr, const char *filename)
1373 {
1374     WinCharState *s = chr->opaque;
1375     COMMCONFIG comcfg;
1376     COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1377     COMSTAT comstat;
1378     DWORD size;
1379     DWORD err;
1380
1381     s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1382     if (!s->hsend) {
1383         fprintf(stderr, "Failed CreateEvent\n");
1384         goto fail;
1385     }
1386     s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1387     if (!s->hrecv) {
1388         fprintf(stderr, "Failed CreateEvent\n");
1389         goto fail;
1390     }
1391
1392     s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1393                       OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1394     if (s->hcom == INVALID_HANDLE_VALUE) {
1395         fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1396         s->hcom = NULL;
1397         goto fail;
1398     }
1399
1400     if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1401         fprintf(stderr, "Failed SetupComm\n");
1402         goto fail;
1403     }
1404
1405     ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1406     size = sizeof(COMMCONFIG);
1407     GetDefaultCommConfig(filename, &comcfg, &size);
1408     comcfg.dcb.DCBlength = sizeof(DCB);
1409     CommConfigDialog(filename, NULL, &comcfg);
1410
1411     if (!SetCommState(s->hcom, &comcfg.dcb)) {
1412         fprintf(stderr, "Failed SetCommState\n");
1413         goto fail;
1414     }
1415
1416     if (!SetCommMask(s->hcom, EV_ERR)) {
1417         fprintf(stderr, "Failed SetCommMask\n");
1418         goto fail;
1419     }
1420
1421     cto.ReadIntervalTimeout = MAXDWORD;
1422     if (!SetCommTimeouts(s->hcom, &cto)) {
1423         fprintf(stderr, "Failed SetCommTimeouts\n");
1424         goto fail;
1425     }
1426
1427     if (!ClearCommError(s->hcom, &err, &comstat)) {
1428         fprintf(stderr, "Failed ClearCommError\n");
1429         goto fail;
1430     }
1431     qemu_add_polling_cb(win_chr_poll, chr);
1432     return 0;
1433
1434  fail:
1435     win_chr_close(chr);
1436     return -1;
1437 }
1438
1439 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1440 {
1441     WinCharState *s = chr->opaque;
1442     DWORD len, ret, size, err;
1443
1444     len = len1;
1445     ZeroMemory(&s->osend, sizeof(s->osend));
1446     s->osend.hEvent = s->hsend;
1447     while (len > 0) {
1448         if (s->hsend)
1449             ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1450         else
1451             ret = WriteFile(s->hcom, buf, len, &size, NULL);
1452         if (!ret) {
1453             err = GetLastError();
1454             if (err == ERROR_IO_PENDING) {
1455                 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1456                 if (ret) {
1457                     buf += size;
1458                     len -= size;
1459                 } else {
1460                     break;
1461                 }
1462             } else {
1463                 break;
1464             }
1465         } else {
1466             buf += size;
1467             len -= size;
1468         }
1469     }
1470     return len1 - len;
1471 }
1472
1473 static int win_chr_read_poll(CharDriverState *chr)
1474 {
1475     WinCharState *s = chr->opaque;
1476
1477     s->max_size = qemu_chr_can_read(chr);
1478     return s->max_size;
1479 }
1480
1481 static void win_chr_readfile(CharDriverState *chr)
1482 {
1483     WinCharState *s = chr->opaque;
1484     int ret, err;
1485     uint8_t buf[1024];
1486     DWORD size;
1487
1488     ZeroMemory(&s->orecv, sizeof(s->orecv));
1489     s->orecv.hEvent = s->hrecv;
1490     ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1491     if (!ret) {
1492         err = GetLastError();
1493         if (err == ERROR_IO_PENDING) {
1494             ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1495         }
1496     }
1497
1498     if (size > 0) {
1499         qemu_chr_read(chr, buf, size);
1500     }
1501 }
1502
1503 static void win_chr_read(CharDriverState *chr)
1504 {
1505     WinCharState *s = chr->opaque;
1506
1507     if (s->len > s->max_size)
1508         s->len = s->max_size;
1509     if (s->len == 0)
1510         return;
1511
1512     win_chr_readfile(chr);
1513 }
1514
1515 static int win_chr_poll(void *opaque)
1516 {
1517     CharDriverState *chr = opaque;
1518     WinCharState *s = chr->opaque;
1519     COMSTAT status;
1520     DWORD comerr;
1521
1522     ClearCommError(s->hcom, &comerr, &status);
1523     if (status.cbInQue > 0) {
1524         s->len = status.cbInQue;
1525         win_chr_read_poll(chr);
1526         win_chr_read(chr);
1527         return 1;
1528     }
1529     return 0;
1530 }
1531
1532 static CharDriverState *qemu_chr_open_win(const char *filename)
1533 {
1534     CharDriverState *chr;
1535     WinCharState *s;
1536
1537     chr = qemu_mallocz(sizeof(CharDriverState));
1538     s = qemu_mallocz(sizeof(WinCharState));
1539     chr->opaque = s;
1540     chr->chr_write = win_chr_write;
1541     chr->chr_close = win_chr_close;
1542
1543     if (win_chr_init(chr, filename) < 0) {
1544         free(s);
1545         free(chr);
1546         return NULL;
1547     }
1548     qemu_chr_reset(chr);
1549     return chr;
1550 }
1551
1552 static int win_chr_pipe_poll(void *opaque)
1553 {
1554     CharDriverState *chr = opaque;
1555     WinCharState *s = chr->opaque;
1556     DWORD size;
1557
1558     PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1559     if (size > 0) {
1560         s->len = size;
1561         win_chr_read_poll(chr);
1562         win_chr_read(chr);
1563         return 1;
1564     }
1565     return 0;
1566 }
1567
1568 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1569 {
1570     WinCharState *s = chr->opaque;
1571     OVERLAPPED ov;
1572     int ret;
1573     DWORD size;
1574     char openname[256];
1575
1576     s->fpipe = TRUE;
1577
1578     s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1579     if (!s->hsend) {
1580         fprintf(stderr, "Failed CreateEvent\n");
1581         goto fail;
1582     }
1583     s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1584     if (!s->hrecv) {
1585         fprintf(stderr, "Failed CreateEvent\n");
1586         goto fail;
1587     }
1588
1589     snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1590     s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1591                               PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1592                               PIPE_WAIT,
1593                               MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1594     if (s->hcom == INVALID_HANDLE_VALUE) {
1595         fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1596         s->hcom = NULL;
1597         goto fail;
1598     }
1599
1600     ZeroMemory(&ov, sizeof(ov));
1601     ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1602     ret = ConnectNamedPipe(s->hcom, &ov);
1603     if (ret) {
1604         fprintf(stderr, "Failed ConnectNamedPipe\n");
1605         goto fail;
1606     }
1607
1608     ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1609     if (!ret) {
1610         fprintf(stderr, "Failed GetOverlappedResult\n");
1611         if (ov.hEvent) {
1612             CloseHandle(ov.hEvent);
1613             ov.hEvent = NULL;
1614         }
1615         goto fail;
1616     }
1617
1618     if (ov.hEvent) {
1619         CloseHandle(ov.hEvent);
1620         ov.hEvent = NULL;
1621     }
1622     qemu_add_polling_cb(win_chr_pipe_poll, chr);
1623     return 0;
1624
1625  fail:
1626     win_chr_close(chr);
1627     return -1;
1628 }
1629
1630
1631 static CharDriverState *qemu_chr_open_win_pipe(const char *filename)
1632 {
1633     CharDriverState *chr;
1634     WinCharState *s;
1635
1636     chr = qemu_mallocz(sizeof(CharDriverState));
1637     s = qemu_mallocz(sizeof(WinCharState));
1638     chr->opaque = s;
1639     chr->chr_write = win_chr_write;
1640     chr->chr_close = win_chr_close;
1641
1642     if (win_chr_pipe_init(chr, filename) < 0) {
1643         free(s);
1644         free(chr);
1645         return NULL;
1646     }
1647     qemu_chr_reset(chr);
1648     return chr;
1649 }
1650
1651 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1652 {
1653     CharDriverState *chr;
1654     WinCharState *s;
1655
1656     chr = qemu_mallocz(sizeof(CharDriverState));
1657     s = qemu_mallocz(sizeof(WinCharState));
1658     s->hcom = fd_out;
1659     chr->opaque = s;
1660     chr->chr_write = win_chr_write;
1661     qemu_chr_reset(chr);
1662     return chr;
1663 }
1664
1665 static CharDriverState *qemu_chr_open_win_con(const char *filename)
1666 {
1667     return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1668 }
1669
1670 static CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
1671 {
1672     HANDLE fd_out;
1673
1674     fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1675                         OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1676     if (fd_out == INVALID_HANDLE_VALUE)
1677         return NULL;
1678
1679     return qemu_chr_open_win_file(fd_out);
1680 }
1681 #endif /* !_WIN32 */
1682
1683 /***********************************************************/
1684 /* UDP Net console */
1685
1686 typedef struct {
1687     int fd;
1688     struct sockaddr_in daddr;
1689     uint8_t buf[1024];
1690     int bufcnt;
1691     int bufptr;
1692     int max_size;
1693 } NetCharDriver;
1694
1695 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1696 {
1697     NetCharDriver *s = chr->opaque;
1698
1699     return sendto(s->fd, buf, len, 0,
1700                   (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
1701 }
1702
1703 static int udp_chr_read_poll(void *opaque)
1704 {
1705     CharDriverState *chr = opaque;
1706     NetCharDriver *s = chr->opaque;
1707
1708     s->max_size = qemu_chr_can_read(chr);
1709
1710     /* If there were any stray characters in the queue process them
1711      * first
1712      */
1713     while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1714         qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1715         s->bufptr++;
1716         s->max_size = qemu_chr_can_read(chr);
1717     }
1718     return s->max_size;
1719 }
1720
1721 static void udp_chr_read(void *opaque)
1722 {
1723     CharDriverState *chr = opaque;
1724     NetCharDriver *s = chr->opaque;
1725
1726     if (s->max_size == 0)
1727         return;
1728     s->bufcnt = recv(s->fd, s->buf, sizeof(s->buf), 0);
1729     s->bufptr = s->bufcnt;
1730     if (s->bufcnt <= 0)
1731         return;
1732
1733     s->bufptr = 0;
1734     while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1735         qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1736         s->bufptr++;
1737         s->max_size = qemu_chr_can_read(chr);
1738     }
1739 }
1740
1741 static void udp_chr_update_read_handler(CharDriverState *chr)
1742 {
1743     NetCharDriver *s = chr->opaque;
1744
1745     if (s->fd >= 0) {
1746         qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1747                              udp_chr_read, NULL, chr);
1748     }
1749 }
1750
1751 static void udp_chr_close(CharDriverState *chr)
1752 {
1753     NetCharDriver *s = chr->opaque;
1754     if (s->fd >= 0) {
1755         qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1756         closesocket(s->fd);
1757     }
1758     qemu_free(s);
1759 }
1760
1761 static CharDriverState *qemu_chr_open_udp(const char *def)
1762 {
1763     CharDriverState *chr = NULL;
1764     NetCharDriver *s = NULL;
1765     int fd = -1;
1766     struct sockaddr_in saddr;
1767
1768     chr = qemu_mallocz(sizeof(CharDriverState));
1769     s = qemu_mallocz(sizeof(NetCharDriver));
1770
1771     fd = socket(PF_INET, SOCK_DGRAM, 0);
1772     if (fd < 0) {
1773         perror("socket(PF_INET, SOCK_DGRAM)");
1774         goto return_err;
1775     }
1776
1777     if (parse_host_src_port(&s->daddr, &saddr, def) < 0) {
1778         printf("Could not parse: %s\n", def);
1779         goto return_err;
1780     }
1781
1782     if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
1783     {
1784         perror("bind");
1785         goto return_err;
1786     }
1787
1788     s->fd = fd;
1789     s->bufcnt = 0;
1790     s->bufptr = 0;
1791     chr->opaque = s;
1792     chr->chr_write = udp_chr_write;
1793     chr->chr_update_read_handler = udp_chr_update_read_handler;
1794     chr->chr_close = udp_chr_close;
1795     return chr;
1796
1797 return_err:
1798     if (chr)
1799         free(chr);
1800     if (s)
1801         free(s);
1802     if (fd >= 0)
1803         closesocket(fd);
1804     return NULL;
1805 }
1806
1807 /***********************************************************/
1808 /* TCP Net console */
1809
1810 typedef struct {
1811     int fd, listen_fd;
1812     int connected;
1813     int max_size;
1814     int do_telnetopt;
1815     int do_nodelay;
1816     int is_unix;
1817 } TCPCharDriver;
1818
1819 static void tcp_chr_accept(void *opaque);
1820
1821 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1822 {
1823     TCPCharDriver *s = chr->opaque;
1824     if (s->connected) {
1825         return send_all(s->fd, buf, len);
1826     } else {
1827         /* XXX: indicate an error ? */
1828         return len;
1829     }
1830 }
1831
1832 static int tcp_chr_read_poll(void *opaque)
1833 {
1834     CharDriverState *chr = opaque;
1835     TCPCharDriver *s = chr->opaque;
1836     if (!s->connected)
1837         return 0;
1838     s->max_size = qemu_chr_can_read(chr);
1839     return s->max_size;
1840 }
1841
1842 #define IAC 255
1843 #define IAC_BREAK 243
1844 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1845                                       TCPCharDriver *s,
1846                                       uint8_t *buf, int *size)
1847 {
1848     /* Handle any telnet client's basic IAC options to satisfy char by
1849      * char mode with no echo.  All IAC options will be removed from
1850      * the buf and the do_telnetopt variable will be used to track the
1851      * state of the width of the IAC information.
1852      *
1853      * IAC commands come in sets of 3 bytes with the exception of the
1854      * "IAC BREAK" command and the double IAC.
1855      */
1856
1857     int i;
1858     int j = 0;
1859
1860     for (i = 0; i < *size; i++) {
1861         if (s->do_telnetopt > 1) {
1862             if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1863                 /* Double IAC means send an IAC */
1864                 if (j != i)
1865                     buf[j] = buf[i];
1866                 j++;
1867                 s->do_telnetopt = 1;
1868             } else {
1869                 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1870                     /* Handle IAC break commands by sending a serial break */
1871                     qemu_chr_event(chr, CHR_EVENT_BREAK);
1872                     s->do_telnetopt++;
1873                 }
1874                 s->do_telnetopt++;
1875             }
1876             if (s->do_telnetopt >= 4) {
1877                 s->do_telnetopt = 1;
1878             }
1879         } else {
1880             if ((unsigned char)buf[i] == IAC) {
1881                 s->do_telnetopt = 2;
1882             } else {
1883                 if (j != i)
1884                     buf[j] = buf[i];
1885                 j++;
1886             }
1887         }
1888     }
1889     *size = j;
1890 }
1891
1892 static void tcp_chr_read(void *opaque)
1893 {
1894     CharDriverState *chr = opaque;
1895     TCPCharDriver *s = chr->opaque;
1896     uint8_t buf[1024];
1897     int len, size;
1898
1899     if (!s->connected || s->max_size <= 0)
1900         return;
1901     len = sizeof(buf);
1902     if (len > s->max_size)
1903         len = s->max_size;
1904     size = recv(s->fd, buf, len, 0);
1905     if (size == 0) {
1906         /* connection closed */
1907         s->connected = 0;
1908         if (s->listen_fd >= 0) {
1909             qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
1910         }
1911         qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1912         closesocket(s->fd);
1913         s->fd = -1;
1914     } else if (size > 0) {
1915         if (s->do_telnetopt)
1916             tcp_chr_process_IAC_bytes(chr, s, buf, &size);
1917         if (size > 0)
1918             qemu_chr_read(chr, buf, size);
1919     }
1920 }
1921
1922 static void tcp_chr_connect(void *opaque)
1923 {
1924     CharDriverState *chr = opaque;
1925     TCPCharDriver *s = chr->opaque;
1926
1927     s->connected = 1;
1928     qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
1929                          tcp_chr_read, NULL, chr);
1930     qemu_chr_reset(chr);
1931 }
1932
1933 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
1934 static void tcp_chr_telnet_init(int fd)
1935 {
1936     char buf[3];
1937     /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
1938     IACSET(buf, 0xff, 0xfb, 0x01);  /* IAC WILL ECHO */
1939     send(fd, (char *)buf, 3, 0);
1940     IACSET(buf, 0xff, 0xfb, 0x03);  /* IAC WILL Suppress go ahead */
1941     send(fd, (char *)buf, 3, 0);
1942     IACSET(buf, 0xff, 0xfb, 0x00);  /* IAC WILL Binary */
1943     send(fd, (char *)buf, 3, 0);
1944     IACSET(buf, 0xff, 0xfd, 0x00);  /* IAC DO Binary */
1945     send(fd, (char *)buf, 3, 0);
1946 }
1947
1948 static void socket_set_nodelay(int fd)
1949 {
1950     int val = 1;
1951     setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
1952 }
1953
1954 static void tcp_chr_accept(void *opaque)
1955 {
1956     CharDriverState *chr = opaque;
1957     TCPCharDriver *s = chr->opaque;
1958     struct sockaddr_in saddr;
1959 #ifndef _WIN32
1960     struct sockaddr_un uaddr;
1961 #endif
1962     struct sockaddr *addr;
1963     socklen_t len;
1964     int fd;
1965
1966     for(;;) {
1967 #ifndef _WIN32
1968         if (s->is_unix) {
1969             len = sizeof(uaddr);
1970             addr = (struct sockaddr *)&uaddr;
1971         } else
1972 #endif
1973         {
1974             len = sizeof(saddr);
1975             addr = (struct sockaddr *)&saddr;
1976         }
1977         fd = accept(s->listen_fd, addr, &len);
1978         if (fd < 0 && errno != EINTR) {
1979             return;
1980         } else if (fd >= 0) {
1981             if (s->do_telnetopt)
1982                 tcp_chr_telnet_init(fd);
1983             break;
1984         }
1985     }
1986     socket_set_nonblock(fd);
1987     if (s->do_nodelay)
1988         socket_set_nodelay(fd);
1989     s->fd = fd;
1990     qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
1991     tcp_chr_connect(chr);
1992 }
1993
1994 static void tcp_chr_close(CharDriverState *chr)
1995 {
1996     TCPCharDriver *s = chr->opaque;
1997     if (s->fd >= 0) {
1998         qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1999         closesocket(s->fd);
2000     }
2001     if (s->listen_fd >= 0) {
2002         qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2003         closesocket(s->listen_fd);
2004     }
2005     qemu_free(s);
2006 }
2007
2008 static CharDriverState *qemu_chr_open_tcp(const char *host_str,
2009                                           int is_telnet,
2010                                           int is_unix)
2011 {
2012     CharDriverState *chr = NULL;
2013     TCPCharDriver *s = NULL;
2014     int fd = -1, offset = 0;
2015     int is_listen = 0;
2016     int is_waitconnect = 1;
2017     int do_nodelay = 0;
2018     const char *ptr;
2019
2020     ptr = host_str;
2021     while((ptr = strchr(ptr,','))) {
2022         ptr++;
2023         if (!strncmp(ptr,"server",6)) {
2024             is_listen = 1;
2025         } else if (!strncmp(ptr,"nowait",6)) {
2026             is_waitconnect = 0;
2027         } else if (!strncmp(ptr,"nodelay",6)) {
2028             do_nodelay = 1;
2029         } else if (!strncmp(ptr,"to=",3)) {
2030             /* nothing, inet_listen() parses this one */;
2031         } else if (!strncmp(ptr,"ipv4",4)) {
2032             /* nothing, inet_connect() and inet_listen() parse this one */;
2033         } else if (!strncmp(ptr,"ipv6",4)) {
2034             /* nothing, inet_connect() and inet_listen() parse this one */;
2035         } else {
2036             printf("Unknown option: %s\n", ptr);
2037             goto fail;
2038         }
2039     }
2040     if (!is_listen)
2041         is_waitconnect = 0;
2042
2043     chr = qemu_mallocz(sizeof(CharDriverState));
2044     s = qemu_mallocz(sizeof(TCPCharDriver));
2045
2046     if (is_listen) {
2047         chr->filename = qemu_malloc(256);
2048         if (is_unix) {
2049             pstrcpy(chr->filename, 256, "unix:");
2050         } else if (is_telnet) {
2051             pstrcpy(chr->filename, 256, "telnet:");
2052         } else {
2053             pstrcpy(chr->filename, 256, "tcp:");
2054         }
2055         offset = strlen(chr->filename);
2056     }
2057     if (is_unix) {
2058         if (is_listen) {
2059             fd = unix_listen(host_str, chr->filename + offset, 256 - offset);
2060         } else {
2061             fd = unix_connect(host_str);
2062         }
2063     } else {
2064         if (is_listen) {
2065             fd = inet_listen(host_str, chr->filename + offset, 256 - offset,
2066                              SOCK_STREAM, 0);
2067         } else {
2068             fd = inet_connect(host_str, SOCK_STREAM);
2069         }
2070     }
2071     if (fd < 0)
2072         goto fail;
2073
2074     if (!is_waitconnect)
2075         socket_set_nonblock(fd);
2076
2077     s->connected = 0;
2078     s->fd = -1;
2079     s->listen_fd = -1;
2080     s->is_unix = is_unix;
2081     s->do_nodelay = do_nodelay && !is_unix;
2082
2083     chr->opaque = s;
2084     chr->chr_write = tcp_chr_write;
2085     chr->chr_close = tcp_chr_close;
2086
2087     if (is_listen) {
2088         s->listen_fd = fd;
2089         qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2090         if (is_telnet)
2091             s->do_telnetopt = 1;
2092     } else {
2093         s->connected = 1;
2094         s->fd = fd;
2095         socket_set_nodelay(fd);
2096         tcp_chr_connect(chr);
2097     }
2098
2099     if (is_listen && is_waitconnect) {
2100         printf("QEMU waiting for connection on: %s\n",
2101                chr->filename ? chr->filename : host_str);
2102         tcp_chr_accept(chr);
2103         socket_set_nonblock(s->listen_fd);
2104     }
2105
2106     return chr;
2107  fail:
2108     if (fd >= 0)
2109         closesocket(fd);
2110     qemu_free(s);
2111     qemu_free(chr);
2112     return NULL;
2113 }
2114
2115 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2116 {
2117     const char *p;
2118     CharDriverState *chr;
2119
2120     if (!strcmp(filename, "vc")) {
2121         chr = text_console_init(0);
2122     } else
2123     if (strstart(filename, "vc:", &p)) {
2124         chr = text_console_init(p);
2125     } else
2126     if (!strcmp(filename, "null")) {
2127         chr = qemu_chr_open_null();
2128     } else
2129     if (strstart(filename, "tcp:", &p)) {
2130         chr = qemu_chr_open_tcp(p, 0, 0);
2131     } else
2132     if (strstart(filename, "telnet:", &p)) {
2133         chr = qemu_chr_open_tcp(p, 1, 0);
2134     } else
2135     if (strstart(filename, "udp:", &p)) {
2136         chr = qemu_chr_open_udp(p);
2137     } else
2138     if (strstart(filename, "mon:", &p)) {
2139         chr = qemu_chr_open(label, p, NULL);
2140         if (chr) {
2141             chr = qemu_chr_open_mux(chr);
2142             monitor_init(chr, !nographic);
2143         } else {
2144             printf("Unable to open driver: %s\n", p);
2145         }
2146     } else if (!strcmp(filename, "msmouse")) {
2147         chr = qemu_chr_open_msmouse();
2148     } else
2149 #ifndef _WIN32
2150     if (strstart(filename, "unix:", &p)) {
2151         chr = qemu_chr_open_tcp(p, 0, 1);
2152     } else if (strstart(filename, "file:", &p)) {
2153         chr = qemu_chr_open_file_out(p);
2154     } else if (strstart(filename, "pipe:", &p)) {
2155         chr = qemu_chr_open_pipe(p);
2156     } else if (!strcmp(filename, "pty")) {
2157         chr = qemu_chr_open_pty();
2158     } else if (!strcmp(filename, "stdio")) {
2159         chr = qemu_chr_open_stdio();
2160     } else
2161 #if defined(__linux__)
2162     if (strstart(filename, "/dev/parport", NULL)) {
2163         chr = qemu_chr_open_pp(filename);
2164     } else
2165 #elif defined(__FreeBSD__)
2166     if (strstart(filename, "/dev/ppi", NULL)) {
2167         chr = qemu_chr_open_pp(filename);
2168     } else
2169 #endif
2170 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2171     || defined(__NetBSD__) || defined(__OpenBSD__)
2172     if (strstart(filename, "/dev/", NULL)) {
2173         chr = qemu_chr_open_tty(filename);
2174     } else
2175 #endif
2176 #else /* !_WIN32 */
2177     if (strstart(filename, "COM", NULL)) {
2178         chr = qemu_chr_open_win(filename);
2179     } else
2180     if (strstart(filename, "pipe:", &p)) {
2181         chr = qemu_chr_open_win_pipe(p);
2182     } else
2183     if (strstart(filename, "con:", NULL)) {
2184         chr = qemu_chr_open_win_con(filename);
2185     } else
2186     if (strstart(filename, "file:", &p)) {
2187         chr = qemu_chr_open_win_file_out(p);
2188     } else
2189 #endif
2190 #ifdef CONFIG_BRLAPI
2191     if (!strcmp(filename, "braille")) {
2192         chr = chr_baum_init();
2193     } else
2194 #endif
2195     {
2196         chr = NULL;
2197     }
2198
2199     if (chr) {
2200         if (!chr->filename)
2201             chr->filename = qemu_strdup(filename);
2202         chr->init = init;
2203         chr->label = qemu_strdup(label);
2204         TAILQ_INSERT_TAIL(&chardevs, chr, next);
2205     }
2206     return chr;
2207 }
2208
2209 void qemu_chr_close(CharDriverState *chr)
2210 {
2211     TAILQ_REMOVE(&chardevs, chr, next);
2212     if (chr->chr_close)
2213         chr->chr_close(chr);
2214     qemu_free(chr->filename);
2215     qemu_free(chr->label);
2216     qemu_free(chr);
2217 }
2218
2219 void qemu_chr_info(void)
2220 {
2221     CharDriverState *chr;
2222
2223     TAILQ_FOREACH(chr, &chardevs, next) {
2224         term_printf("%s: filename=%s\n", chr->label, chr->filename);
2225     }
2226 }