server/console.c

   1 /*
   2  * Server-side console management
   3  *
   4  * Copyright (C) 1998 Alexandre Julliard
   5  *               2001 Eric Pouech
   6  * Copyright 2020 Jacek Caban for CodeWeavers
   7  *
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25
  26 #include <assert.h>
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <unistd.h>
  30 #include <signal.h>
  31 #include <sys/ioctl.h>
  32 #include <termios.h>
  33
  34 #include "ntstatus.h"
  35 #define WIN32_NO_STATUS
  36 #include "handle.h"
  37 #include "process.h"
  38 #include "request.h"
  39 #include "file.h"
  40 #include "unicode.h"
  41 #include "wincon.h"
  42 #include "winternl.h"
  43 #include "wine/condrv.h"
  44
  45 struct screen_buffer;
  46
  47 struct history_line
  48 {
  49     data_size_t len;
  50     WCHAR       text[1];
  51 };
  52
  53 struct console
  54 {
  55     struct object                obj;           /* object header */
  56     int                          signaled;      /* is console signaled */
  57     struct thread               *renderer;      /* console renderer thread */
  58     struct screen_buffer        *active;        /* active screen buffer */
  59     struct console_server       *server;        /* console server object */
  60     unsigned int                 last_id;       /* id of last created console buffer */
  61     struct fd                   *fd;            /* for bare console, attached input fd */
  62     struct async_queue           ioctl_q;       /* ioctl queue */
  63     struct async_queue           read_q;        /* read queue */
  64 };
  65
  66 static void console_dump( struct object *obj, int verbose );
  67 static void console_destroy( struct object *obj );
  68 static int console_signaled( struct object *obj, struct wait_queue_entry *entry );
  69 static struct fd *console_get_fd( struct object *obj );
  70 static struct object *console_lookup_name( struct object *obj, struct unicode_str *name,
  71                                            unsigned int attr, struct object *root );
  72 static struct object *console_open_file( struct object *obj, unsigned int access,
  73                                          unsigned int sharing, unsigned int options );
  74 static int console_add_queue( struct object *obj, struct wait_queue_entry *entry );
  75
  76 static const struct object_ops console_ops =
  77 {
  78     sizeof(struct console),           /* size */
  79     &file_type,                       /* type */
  80     console_dump,                     /* dump */
  81     console_add_queue,                /* add_queue */
  82     remove_queue,                     /* remove_queue */
  83     console_signaled,                 /* signaled */
  84     no_satisfied,                     /* satisfied */
  85     no_signal,                        /* signal */
  86     console_get_fd,                   /* get_fd */
  87     default_map_access,               /* map_access */
  88     default_get_sd,                   /* get_sd */
  89     default_set_sd,                   /* set_sd */
  90     no_get_full_name,                 /* get_full_name */
  91     console_lookup_name,              /* lookup_name */
  92     no_link_name,                     /* link_name */
  93     NULL,                             /* unlink_name */
  94     console_open_file,                /* open_file */
  95     no_kernel_obj_list,               /* get_kernel_obj_list */
  96     no_close_handle,                  /* close_handle */
  97     console_destroy                   /* destroy */
  98 };
  99
 100 static enum server_fd_type console_get_fd_type( struct fd *fd );
 101 static void console_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
 102 static void console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 103 static void console_read( struct fd *fd, struct async *async, file_pos_t pos );
 104 static void console_flush( struct fd *fd, struct async *async );
 105 static void console_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 106
 107 static const struct fd_ops console_fd_ops =
 108 {
 109     default_fd_get_poll_events,   /* get_poll_events */
 110     default_poll_event,           /* poll_event */
 111     console_get_fd_type,          /* get_fd_type */
 112     console_read,                 /* read */
 113     no_fd_write,                  /* write */
 114     console_flush,                /* flush */
 115     console_get_file_info,        /* get_file_info */
 116     console_get_volume_info,      /* get_volume_info */
 117     console_ioctl,                /* ioctl */
 118     default_fd_cancel_async,      /* cancel_async */
 119     default_fd_queue_async,       /* queue_async */
 120     default_fd_reselect_async     /* reselect_async */
 121 };
 122
 123 struct console_host_ioctl
 124 {
 125     unsigned int          code;        /* ioctl code */
 126     int                   output;      /* output id for screen buffer ioctls */
 127     struct async         *async;       /* ioctl async */
 128     struct list           entry;       /* list entry */
 129 };
 130
 131 struct console_server
 132 {
 133     struct object         obj;            /* object header */
 134     struct fd            *fd;             /* pseudo-fd for ioctls */
 135     struct console       *console;        /* attached console */
 136     struct list           queue;          /* ioctl queue */
 137     struct list           read_queue;     /* blocking read queue */
 138     unsigned int          busy : 1;       /* flag if server processing an ioctl */
 139     unsigned int          once_input : 1; /* flag if input thread has already been requested */
 140     int                   term_fd;        /* UNIX terminal fd */
 141     struct termios        termios;        /* original termios */
 142 };
 143
 144 static void console_server_dump( struct object *obj, int verbose );
 145 static void console_server_destroy( struct object *obj );
 146 static int console_server_signaled( struct object *obj, struct wait_queue_entry *entry );
 147 static struct fd *console_server_get_fd( struct object *obj );
 148 static struct object *console_server_lookup_name( struct object *obj, struct unicode_str *name,
 149                                                 unsigned int attr, struct object *root );
 150 static struct object *console_server_open_file( struct object *obj, unsigned int access,
 151                                                 unsigned int sharing, unsigned int options );
 152
 153 static const struct object_ops console_server_ops =
 154 {
 155     sizeof(struct console_server),    /* size */
 156     &file_type,                       /* type */
 157     console_server_dump,              /* dump */
 158     add_queue,                        /* add_queue */
 159     remove_queue,                     /* remove_queue */
 160     console_server_signaled,          /* signaled */
 161     no_satisfied,                     /* satisfied */
 162     no_signal,                        /* signal */
 163     console_server_get_fd,            /* get_fd */
 164     default_map_access,               /* map_access */
 165     default_get_sd,                   /* get_sd */
 166     default_set_sd,                   /* set_sd */
 167     no_get_full_name,                 /* get_full_name */
 168     console_server_lookup_name,       /* lookup_name */
 169     no_link_name,                     /* link_name */
 170     NULL,                             /* unlink_name */
 171     console_server_open_file,         /* open_file */
 172     no_kernel_obj_list,               /* get_kernel_obj_list */
 173     no_close_handle,                  /* close_handle */
 174     console_server_destroy            /* destroy */
 175 };
 176
 177 static void console_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 178
 179 static const struct fd_ops console_server_fd_ops =
 180 {
 181     default_fd_get_poll_events,   /* get_poll_events */
 182     default_poll_event,           /* poll_event */
 183     console_get_fd_type,          /* get_fd_type */
 184     no_fd_read,                   /* read */
 185     no_fd_write,                  /* write */
 186     no_fd_flush,                  /* flush */
 187     no_fd_get_file_info,          /* get_file_info */
 188     no_fd_get_volume_info,        /* get_volume_info */
 189     console_server_ioctl,         /* ioctl */
 190     default_fd_cancel_async,      /* cancel_async */
 191     default_fd_queue_async,       /* queue_async */
 192     default_fd_reselect_async     /* reselect_async */
 193 };
 194
 195 struct font_info
 196 {
 197     short int width;
 198     short int height;
 199     short int weight;
 200     short int pitch_family;
 201     WCHAR    *face_name;
 202     data_size_t face_len;
 203 };
 204
 205 struct screen_buffer
 206 {
 207     struct object         obj;           /* object header */
 208     struct list           entry;         /* entry in list of all screen buffers */
 209     struct console       *input;         /* associated console input */
 210     unsigned int          id;            /* buffer id */
 211     struct fd            *fd;            /* for bare console, attached output fd */
 212     struct async_queue    ioctl_q;       /* ioctl queue */
 213 };
 214
 215 static void screen_buffer_dump( struct object *obj, int verbose );
 216 static void screen_buffer_destroy( struct object *obj );
 217 static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry );
 218 static struct fd *screen_buffer_get_fd( struct object *obj );
 219 static struct object *screen_buffer_open_file( struct object *obj, unsigned int access,
 220                                                unsigned int sharing, unsigned int options );
 221
 222 static const struct object_ops screen_buffer_ops =
 223 {
 224     sizeof(struct screen_buffer),     /* size */
 225     &file_type,                       /* type */
 226     screen_buffer_dump,               /* dump */
 227     screen_buffer_add_queue,          /* add_queue */
 228     NULL,                             /* remove_queue */
 229     NULL,                             /* signaled */
 230     NULL,                             /* satisfied */
 231     no_signal,                        /* signal */
 232     screen_buffer_get_fd,             /* get_fd */
 233     default_map_access,               /* map_access */
 234     default_get_sd,                   /* get_sd */
 235     default_set_sd,                   /* set_sd */
 236     no_get_full_name,                 /* get_full_name */
 237     no_lookup_name,                   /* lookup_name */
 238     no_link_name,                     /* link_name */
 239     NULL,                             /* unlink_name */
 240     screen_buffer_open_file,          /* open_file */
 241     no_kernel_obj_list,               /* get_kernel_obj_list */
 242     no_close_handle,                  /* close_handle */
 243     screen_buffer_destroy             /* destroy */
 244 };
 245
 246 static void screen_buffer_write( struct fd *fd, struct async *async, file_pos_t pos );
 247 static void screen_buffer_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 248
 249 static const struct fd_ops screen_buffer_fd_ops =
 250 {
 251     default_fd_get_poll_events,   /* get_poll_events */
 252     default_poll_event,           /* poll_event */
 253     console_get_fd_type,          /* get_fd_type */
 254     no_fd_read,                   /* read */
 255     screen_buffer_write,          /* write */
 256     no_fd_flush,                  /* flush */
 257     console_get_file_info,        /* get_file_info */
 258     console_get_volume_info,      /* get_volume_info */
 259     screen_buffer_ioctl,          /* ioctl */
 260     default_fd_cancel_async,      /* cancel_async */
 261     default_fd_queue_async,       /* queue_async */
 262     default_fd_reselect_async     /* reselect_async */
 263 };
 264
 265 static void console_device_dump( struct object *obj, int verbose );
 266 static struct object *console_device_lookup_name( struct object *obj, struct unicode_str *name,
 267                                                 unsigned int attr, struct object *root );
 268 static struct object *console_device_open_file( struct object *obj, unsigned int access,
 269                                                 unsigned int sharing, unsigned int options );
 270
 271 static const struct object_ops console_device_ops =
 272 {
 273     sizeof(struct object),            /* size */
 274     &device_type,                     /* type */
 275     console_device_dump,              /* dump */
 276     no_add_queue,                     /* add_queue */
 277     NULL,                             /* remove_queue */
 278     NULL,                             /* signaled */
 279     no_satisfied,                     /* satisfied */
 280     no_signal,                        /* signal */
 281     no_get_fd,                        /* get_fd */
 282     default_map_access,               /* map_access */
 283     default_get_sd,                   /* get_sd */
 284     default_set_sd,                   /* set_sd */
 285     default_get_full_name,            /* get_full_name */
 286     console_device_lookup_name,       /* lookup_name */
 287     directory_link_name,              /* link_name */
 288     default_unlink_name,              /* unlink_name */
 289     console_device_open_file,         /* open_file */
 290     no_kernel_obj_list,               /* get_kernel_obj_list */
 291     no_close_handle,                  /* close_handle */
 292     no_destroy                        /* destroy */
 293 };
 294
 295 struct console_input
 296 {
 297     struct object         obj;         /* object header */
 298     struct fd            *fd;          /* pseudo-fd */
 299 };
 300
 301 static void console_input_dump( struct object *obj, int verbose );
 302 static struct object *console_input_open_file( struct object *obj, unsigned int access,
 303                                                unsigned int sharing, unsigned int options );
 304 static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry );
 305 static struct fd *console_input_get_fd( struct object *obj );
 306 static void console_input_destroy( struct object *obj );
 307
 308 static const struct object_ops console_input_ops =
 309 {
 310     sizeof(struct console_input),     /* size */
 311     &device_type,                     /* type */
 312     console_input_dump,               /* dump */
 313     console_input_add_queue,          /* add_queue */
 314     NULL,                             /* remove_queue */
 315     NULL,                             /* signaled */
 316     no_satisfied,                     /* satisfied */
 317     no_signal,                        /* signal */
 318     console_input_get_fd,             /* get_fd */
 319     default_map_access,               /* map_access */
 320     default_get_sd,                   /* get_sd */
 321     default_set_sd,                   /* set_sd */
 322     no_get_full_name,                 /* get_full_name */
 323     no_lookup_name,                   /* lookup_name */
 324     directory_link_name,              /* link_name */
 325     default_unlink_name,              /* unlink_name */
 326     console_input_open_file,          /* open_file */
 327     no_kernel_obj_list,               /* get_kernel_obj_list */
 328     no_close_handle,                  /* close_handle */
 329     console_input_destroy             /* destroy */
 330 };
 331
 332 static void console_input_read( struct fd *fd, struct async *async, file_pos_t pos );
 333 static void console_input_flush( struct fd *fd, struct async *async );
 334 static void console_input_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 335
 336 static const struct fd_ops console_input_fd_ops =
 337 {
 338     default_fd_get_poll_events,   /* get_poll_events */
 339     default_poll_event,           /* poll_event */
 340     console_get_fd_type,          /* get_fd_type */
 341     console_input_read,           /* read */
 342     no_fd_write,                  /* write */
 343     console_input_flush,          /* flush */
 344     console_get_file_info,        /* get_file_info */
 345     console_get_volume_info,      /* get_volume_info */
 346     console_input_ioctl,          /* ioctl */
 347     default_fd_cancel_async,      /* cancel_async */
 348     default_fd_queue_async,       /* queue_async */
 349     default_fd_reselect_async     /* reselect_async */
 350 };
 351
 352 struct console_output
 353 {
 354     struct object         obj;         /* object header */
 355     struct fd            *fd;          /* pseudo-fd */
 356 };
 357
 358 static void console_output_dump( struct object *obj, int verbose );
 359 static int console_output_add_queue( struct object *obj, struct wait_queue_entry *entry );
 360 static struct fd *console_output_get_fd( struct object *obj );
 361 static struct object *console_output_open_file( struct object *obj, unsigned int access,
 362                                                 unsigned int sharing, unsigned int options );
 363 static void console_output_destroy( struct object *obj );
 364
 365 static const struct object_ops console_output_ops =
 366 {
 367     sizeof(struct console_output),    /* size */
 368     &device_type,                     /* type */
 369     console_output_dump,              /* dump */
 370     console_output_add_queue,         /* add_queue */
 371     NULL,                             /* remove_queue */
 372     NULL,                             /* signaled */
 373     no_satisfied,                     /* satisfied */
 374     no_signal,                        /* signal */
 375     console_output_get_fd,            /* get_fd */
 376     default_map_access,               /* map_access */
 377     default_get_sd,                   /* get_sd */
 378     default_set_sd,                   /* set_sd */
 379     no_get_full_name,                 /* get_full_name */
 380     no_lookup_name,                   /* lookup_name */
 381     directory_link_name,              /* link_name */
 382     default_unlink_name,              /* unlink_name */
 383     console_output_open_file,         /* open_file */
 384     no_kernel_obj_list,               /* get_kernel_obj_list */
 385     no_close_handle,                  /* close_handle */
 386     console_output_destroy            /* destroy */
 387 };
 388
 389 static void console_output_write( struct fd *fd, struct async *async, file_pos_t pos );
 390 static void console_output_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 391
 392 static const struct fd_ops console_output_fd_ops =
 393 {
 394     default_fd_get_poll_events,   /* get_poll_events */
 395     default_poll_event,           /* poll_event */
 396     console_get_fd_type,          /* get_fd_type */
 397     no_fd_read,                   /* read */
 398     console_output_write,         /* write */
 399     no_fd_flush,                  /* flush */
 400     console_get_file_info,        /* get_file_info */
 401     console_get_volume_info,      /* get_volume_info */
 402     console_output_ioctl,         /* ioctl */
 403     default_fd_cancel_async,      /* cancel_async */
 404     default_fd_queue_async,       /* queue_async */
 405     default_fd_reselect_async     /* reselect_async */
 406 };
 407
 408 struct console_connection
 409 {
 410     struct object         obj;         /* object header */
 411     struct fd            *fd;          /* pseudo-fd for ioctls */
 412 };
 413
 414 static void console_connection_dump( struct object *obj, int verbose );
 415 static struct fd *console_connection_get_fd( struct object *obj );
 416 static struct object *console_connection_lookup_name( struct object *obj, struct unicode_str *name,
 417                                                     unsigned int attr, struct object *root );
 418 static struct object *console_connection_open_file( struct object *obj, unsigned int access,
 419                                                     unsigned int sharing, unsigned int options );
 420 static int console_connection_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
 421 static void console_connection_destroy( struct object *obj );
 422
 423 static const struct object_ops console_connection_ops =
 424 {
 425     sizeof(struct console_connection),/* size */
 426     &device_type,                     /* type */
 427     console_connection_dump,          /* dump */
 428     no_add_queue,                     /* add_queue */
 429     NULL,                             /* remove_queue */
 430     NULL,                             /* signaled */
 431     no_satisfied,                     /* satisfied */
 432     no_signal,                        /* signal */
 433     console_connection_get_fd,        /* get_fd */
 434     default_map_access,               /* map_access */
 435     default_get_sd,                   /* get_sd */
 436     default_set_sd,                   /* set_sd */
 437     no_get_full_name,                 /* get_full_name */
 438     console_connection_lookup_name,   /* lookup_name */
 439     directory_link_name,              /* link_name */
 440     default_unlink_name,              /* unlink_name */
 441     console_connection_open_file,     /* open_file */
 442     no_kernel_obj_list,               /* get_kernel_obj_list */
 443     console_connection_close_handle,  /* close_handle */
 444     console_connection_destroy        /* destroy */
 445 };
 446
 447 static void console_connection_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 448
 449 static const struct fd_ops console_connection_fd_ops =
 450 {
 451     default_fd_get_poll_events,   /* get_poll_events */
 452     default_poll_event,           /* poll_event */
 453     console_get_fd_type,          /* get_fd_type */
 454     no_fd_read,                   /* read */
 455     no_fd_write,                  /* write */
 456     no_fd_flush,                  /* flush */
 457     no_fd_get_file_info,          /* get_file_info */
 458     no_fd_get_volume_info,        /* get_volume_info */
 459     console_connection_ioctl,     /* ioctl */
 460     default_fd_cancel_async,      /* cancel_async */
 461     default_fd_queue_async,       /* queue_async */
 462     default_fd_reselect_async     /* reselect_async */
 463 };
 464
 465 static struct list screen_buffer_list = LIST_INIT(screen_buffer_list);
 466
 467 static int queue_host_ioctl( struct console_server *server, unsigned int code, unsigned int output,
 468                              struct async *async, struct async_queue *queue );
 469
 470 static int console_add_queue( struct object *obj, struct wait_queue_entry *entry )
 471 {
 472     struct console *console = (struct console*)obj;
 473     assert( obj->ops == &console_ops );
 474     /* before waiting, ensure conhost's input thread has been started */
 475     if (console->server && !console->server->once_input)
 476     {
 477         console->server->once_input = 1;
 478         if (console->server->term_fd == -1)
 479             queue_host_ioctl( console->server, IOCTL_CONDRV_PEEK, 0, NULL, NULL );
 480     }
 481     return add_queue( &console->obj, entry );
 482 }
 483
 484 static int console_signaled( struct object *obj, struct wait_queue_entry *entry )
 485 {
 486     struct console *console = (struct console*)obj;
 487     return console->signaled;
 488 }
 489
 490 static struct fd *console_get_fd( struct object *obj )
 491 {
 492     struct console *console = (struct console *)obj;
 493     assert( obj->ops == &console_ops );
 494     return (struct fd *)grab_object( console->fd );
 495 }
 496
 497 static enum server_fd_type console_get_fd_type( struct fd *fd )
 498 {
 499     return FD_TYPE_CHAR;
 500 }
 501
 502 static void console_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class )
 503 {
 504     set_error( STATUS_INVALID_DEVICE_REQUEST );
 505 }
 506
 507 static void console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 508 {
 509     switch (info_class)
 510     {
 511     case FileFsDeviceInformation:
 512         {
 513             static const FILE_FS_DEVICE_INFORMATION device_info =
 514             {
 515                 FILE_DEVICE_CONSOLE,
 516                 FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL
 517             };
 518             if (get_reply_max_size() >= sizeof(device_info))
 519                 set_reply_data( &device_info, sizeof(device_info) );
 520             else
 521                 set_error( STATUS_BUFFER_TOO_SMALL );
 522             break;
 523         }
 524     default:
 525         set_error( STATUS_NOT_IMPLEMENTED );
 526     }
 527 }
 528
 529 static struct object *create_console(void)
 530 {
 531     struct console *console;
 532
 533     if (!(console = alloc_object( &console_ops )))
 534         return NULL;
 535
 536     console->renderer      = NULL;
 537     console->signaled      = 0;
 538     console->active        = NULL;
 539     console->server        = NULL;
 540     console->fd            = NULL;
 541     console->last_id       = 0;
 542     init_async_queue( &console->ioctl_q );
 543     init_async_queue( &console->read_q );
 544
 545     console->fd = alloc_pseudo_fd( &console_fd_ops, &console->obj, FILE_SYNCHRONOUS_IO_NONALERT );
 546     if (!console->fd)
 547     {
 548         release_object( console );
 549         return NULL;
 550     }
 551     allow_fd_caching( console->fd );
 552     return &console->obj;
 553 }
 554
 555 static void console_host_ioctl_terminate( struct console_host_ioctl *call, unsigned int status )
 556 {
 557     if (call->async)
 558     {
 559         async_terminate( call->async, status );
 560         release_object( call->async );
 561     }
 562     free( call );
 563 }
 564
 565 static int queue_host_ioctl( struct console_server *server, unsigned int code, unsigned int output,
 566                              struct async *async, struct async_queue *queue )
 567 {
 568     struct console_host_ioctl *ioctl;
 569
 570     if (!(ioctl = mem_alloc( sizeof(*ioctl) ))) return 0;
 571     ioctl->code   = code;
 572     ioctl->output = output;
 573     ioctl->async  = NULL;
 574     if (async)
 575     {
 576         ioctl->async = (struct async *)grab_object( async );
 577         queue_async( queue, async );
 578     }
 579     list_add_tail( &server->queue, &ioctl->entry );
 580     wake_up( &server->obj, 0 );
 581     if (async) set_error( STATUS_PENDING );
 582     return 1;
 583 }
 584
 585 static void disconnect_console_server( struct console_server *server )
 586 {
 587     while (!list_empty( &server->queue ))
 588     {
 589         struct console_host_ioctl *call = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
 590         list_remove( &call->entry );
 591         console_host_ioctl_terminate( call, STATUS_CANCELLED );
 592     }
 593     while (!list_empty( &server->read_queue ))
 594     {
 595         struct console_host_ioctl *call = LIST_ENTRY( list_head( &server->read_queue ), struct console_host_ioctl, entry );
 596         list_remove( &call->entry );
 597         console_host_ioctl_terminate( call, STATUS_CANCELLED );
 598     }
 599
 600     if (server->term_fd != -1)
 601     {
 602         tcsetattr( server->term_fd, TCSANOW, &server->termios );
 603         close( server->term_fd );
 604         server->term_fd = -1;
 605     }
 606
 607     if (server->console)
 608     {
 609         assert( server->console->server == server );
 610         server->console->server = NULL;
 611         server->console = NULL;
 612         wake_up( &server->obj, 0 );
 613     }
 614 }
 615
 616 static void set_active_screen_buffer( struct console *console, struct screen_buffer *screen_buffer )
 617 {
 618     if (console->active == screen_buffer) return;
 619     if (console->active) release_object( console->active );
 620     console->active = (struct screen_buffer *)grab_object( screen_buffer );
 621
 622     if (console->server) queue_host_ioctl( console->server, IOCTL_CONDRV_ACTIVATE,
 623                                            screen_buffer->id, NULL, NULL );
 624 }
 625
 626 static struct object *create_screen_buffer( struct console *console )
 627 {
 628     struct screen_buffer *screen_buffer;
 629
 630     if (console->last_id == ~0)
 631     {
 632         set_error( STATUS_NO_MEMORY );
 633         return NULL;
 634     }
 635
 636     if (!(screen_buffer = alloc_object( &screen_buffer_ops )))
 637         return NULL;
 638
 639     screen_buffer->id    = ++console->last_id;
 640     screen_buffer->input = console;
 641     init_async_queue( &screen_buffer->ioctl_q );
 642     list_add_head( &screen_buffer_list, &screen_buffer->entry );
 643
 644     screen_buffer->fd = alloc_pseudo_fd( &screen_buffer_fd_ops, &screen_buffer->obj,
 645                                          FILE_SYNCHRONOUS_IO_NONALERT );
 646     if (!screen_buffer->fd)
 647     {
 648         release_object( screen_buffer );
 649         return NULL;
 650     }
 651     allow_fd_caching(screen_buffer->fd);
 652
 653     if (console->server) queue_host_ioctl( console->server, IOCTL_CONDRV_INIT_OUTPUT,
 654                                            screen_buffer->id, NULL, NULL );
 655     if (!console->active) set_active_screen_buffer( console, screen_buffer );
 656     return &screen_buffer->obj;
 657 }
 658
 659 struct thread *console_get_renderer( struct console *console )
 660 {
 661     return console->renderer;
 662 }
 663
 664 struct console_signal_info
 665 {
 666     struct console        *console;
 667     process_id_t           group;
 668     int                    signal;
 669 };
 670
 671 static int propagate_console_signal_cb(struct process *process, void *user)
 672 {
 673     struct console_signal_info* csi = (struct console_signal_info*)user;
 674
 675     if (process->console == csi->console && (!csi->group || process->group_id == csi->group))
 676     {
 677         /* find a suitable thread to signal */
 678         struct thread *thread;
 679         LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
 680         {
 681             if (send_thread_signal( thread, csi->signal )) break;
 682         }
 683     }
 684     return FALSE;
 685 }
 686
 687 static void propagate_console_signal( struct console *console,
 688                                       int sig, process_id_t group_id )
 689 {
 690     struct console_signal_info csi;
 691
 692     if (!console)
 693     {
 694         set_error( STATUS_INVALID_PARAMETER );
 695         return;
 696     }
 697     /* FIXME: should support the other events (like CTRL_BREAK) */
 698     if (sig != CTRL_C_EVENT)
 699     {
 700         set_error( STATUS_NOT_IMPLEMENTED );
 701         return;
 702     }
 703     csi.console = console;
 704     csi.signal  = SIGINT;
 705     csi.group   = group_id;
 706
 707     enum_processes(propagate_console_signal_cb, &csi);
 708 }
 709
 710 /* dumb dump */
 711 static void console_dump( struct object *obj, int verbose )
 712 {
 713     struct console *console = (struct console *)obj;
 714     assert( obj->ops == &console_ops );
 715     fprintf( stderr, "Console input active=%p server=%p\n",
 716              console->active, console->server );
 717 }
 718
 719 static void console_destroy( struct object *obj )
 720 {
 721     struct console *console = (struct console *)obj;
 722     struct screen_buffer *curr;
 723
 724     assert( obj->ops == &console_ops );
 725
 726     if (console->server)
 727     {
 728         assert( console->server->console == console );
 729         disconnect_console_server( console->server );
 730     }
 731
 732     if (console->active) release_object( console->active );
 733     console->active = NULL;
 734
 735     LIST_FOR_EACH_ENTRY( curr, &screen_buffer_list, struct screen_buffer, entry )
 736     {
 737         if (curr->input == console) curr->input = NULL;
 738     }
 739
 740     free_async_queue( &console->ioctl_q );
 741     free_async_queue( &console->read_q );
 742     if (console->fd)
 743         release_object( console->fd );
 744 }
 745
 746 static struct object *create_console_connection( struct console *console )
 747 {
 748     struct console_connection *connection;
 749
 750     if (current->process->console)
 751     {
 752         set_error( STATUS_ACCESS_DENIED );
 753         return NULL;
 754     }
 755
 756     if (!(connection = alloc_object( &console_connection_ops ))) return NULL;
 757     if (!(connection->fd = alloc_pseudo_fd( &console_connection_fd_ops, &connection->obj, 0 )))
 758     {
 759         release_object( connection );
 760         return NULL;
 761     }
 762
 763     if (console)
 764         current->process->console = (struct console *)grab_object( console );
 765
 766     return &connection->obj;
 767 }
 768
 769 static struct object *console_lookup_name( struct object *obj, struct unicode_str *name,
 770                                            unsigned int attr, struct object *root )
 771 {
 772     struct console *console = (struct console *)obj;
 773     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
 774     assert( obj->ops == &console_ops );
 775
 776     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
 777     {
 778         name->len = 0;
 779         return create_console_connection( console );
 780     }
 781
 782     return NULL;
 783 }
 784
 785 static struct object *console_open_file( struct object *obj, unsigned int access,
 786                                                unsigned int sharing, unsigned int options )
 787 {
 788     return grab_object( obj );
 789 }
 790
 791 static void screen_buffer_dump( struct object *obj, int verbose )
 792 {
 793     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 794     assert( obj->ops == &screen_buffer_ops );
 795
 796     fprintf(stderr, "Console screen buffer input=%p\n", screen_buffer->input );
 797 }
 798
 799 static void screen_buffer_destroy( struct object *obj )
 800 {
 801     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 802
 803     assert( obj->ops == &screen_buffer_ops );
 804
 805     list_remove( &screen_buffer->entry );
 806     if (screen_buffer->input && screen_buffer->input->server)
 807         queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_CLOSE_OUTPUT,
 808                           screen_buffer->id, NULL, NULL );
 809     if (screen_buffer->fd) release_object( screen_buffer->fd );
 810     free_async_queue( &screen_buffer->ioctl_q );
 811 }
 812
 813 static struct object *screen_buffer_open_file( struct object *obj, unsigned int access,
 814                                                unsigned int sharing, unsigned int options )
 815 {
 816     return grab_object( obj );
 817 }
 818
 819 static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry )
 820 {
 821     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 822     if (!screen_buffer->input)
 823     {
 824         set_error( STATUS_ACCESS_DENIED );
 825         return 0;
 826     }
 827     return console_add_queue( &screen_buffer->input->obj, entry );
 828 }
 829
 830 static struct fd *screen_buffer_get_fd( struct object *obj )
 831 {
 832     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 833     assert( obj->ops == &screen_buffer_ops );
 834     if (screen_buffer->fd)
 835         return (struct fd*)grab_object( screen_buffer->fd );
 836     set_error( STATUS_OBJECT_TYPE_MISMATCH );
 837     return NULL;
 838 }
 839
 840 static void console_server_dump( struct object *obj, int verbose )
 841 {
 842     assert( obj->ops == &console_server_ops );
 843     fprintf( stderr, "Console server\n" );
 844 }
 845
 846 static void console_server_destroy( struct object *obj )
 847 {
 848     struct console_server *server = (struct console_server *)obj;
 849     assert( obj->ops == &console_server_ops );
 850     disconnect_console_server( server );
 851     if (server->fd) release_object( server->fd );
 852 }
 853
 854 static struct object *console_server_lookup_name( struct object *obj, struct unicode_str *name,
 855                                                   unsigned int attr, struct object *root )
 856 {
 857     struct console_server *server = (struct console_server*)obj;
 858     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
 859     assert( obj->ops == &console_server_ops );
 860
 861     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
 862     {
 863         struct screen_buffer *screen_buffer;
 864         name->len = 0;
 865         if (server->console)
 866         {
 867             set_error( STATUS_INVALID_HANDLE );
 868             return 0;
 869         }
 870         if (!(server->console = (struct console *)create_console())) return NULL;
 871         if (!(screen_buffer = (struct screen_buffer *)create_screen_buffer( server->console )))
 872         {
 873             release_object( server->console );
 874             server->console = NULL;
 875             return NULL;
 876         }
 877         release_object( screen_buffer );
 878         server->console->server = server;
 879
 880         return &server->console->obj;
 881     }
 882
 883     return NULL;
 884 }
 885
 886 static int console_server_signaled( struct object *obj, struct wait_queue_entry *entry )
 887 {
 888     struct console_server *server = (struct console_server*)obj;
 889     assert( obj->ops == &console_server_ops );
 890     return !server->console || !list_empty( &server->queue );
 891 }
 892
 893 static struct fd *console_server_get_fd( struct object* obj )
 894 {
 895     struct console_server *server = (struct console_server*)obj;
 896     assert( obj->ops == &console_server_ops );
 897     return (struct fd *)grab_object( server->fd );
 898 }
 899
 900 static struct object *console_server_open_file( struct object *obj, unsigned int access,
 901                                                 unsigned int sharing, unsigned int options )
 902 {
 903     return grab_object( obj );
 904 }
 905
 906 static struct object *create_console_server( void )
 907 {
 908     struct console_server *server;
 909
 910     if (!(server = alloc_object( &console_server_ops ))) return NULL;
 911     server->console    = NULL;
 912     server->busy       = 0;
 913     server->once_input = 0;
 914     server->term_fd    = -1;
 915     list_init( &server->queue );
 916     list_init( &server->read_queue );
 917     server->fd = alloc_pseudo_fd( &console_server_fd_ops, &server->obj, FILE_SYNCHRONOUS_IO_NONALERT );
 918     if (!server->fd)
 919     {
 920         release_object( server );
 921         return NULL;
 922     }
 923     allow_fd_caching(server->fd);
 924
 925     return &server->obj;
 926 }
 927
 928 static int is_blocking_read_ioctl( unsigned int code )
 929 {
 930     switch (code)
 931     {
 932     case IOCTL_CONDRV_READ_INPUT:
 933     case IOCTL_CONDRV_READ_CONSOLE:
 934     case IOCTL_CONDRV_READ_FILE:
 935         return 1;
 936     default:
 937         return 0;
 938     }
 939 }
 940
 941 static void console_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
 942 {
 943     struct console *console = get_fd_user( fd );
 944
 945     switch (code)
 946     {
 947     case IOCTL_CONDRV_CTRL_EVENT:
 948         {
 949             const struct condrv_ctrl_event *event = get_req_data();
 950             process_id_t group;
 951             if (get_req_data_size() != sizeof(*event))
 952             {
 953                 set_error( STATUS_INVALID_PARAMETER );
 954                 return;
 955             }
 956             group = event->group_id ? event->group_id : current->process->group_id;
 957             if (!group)
 958             {
 959                 set_error( STATUS_INVALID_PARAMETER );
 960                 return;
 961             }
 962             propagate_console_signal( console, event->event, group );
 963             return;
 964         }
 965
 966     default:
 967         if (!console->server || code >> 16 != FILE_DEVICE_CONSOLE)
 968         {
 969             set_error( STATUS_INVALID_HANDLE );
 970             return;
 971         }
 972         queue_host_ioctl( console->server, code, 0, async, &console->ioctl_q );
 973     }
 974 }
 975
 976 static void console_read( struct fd *fd, struct async *async, file_pos_t pos )
 977 {
 978     struct console *console = get_fd_user( fd );
 979
 980     if (!console->server)
 981     {
 982         set_error( STATUS_INVALID_HANDLE );
 983         return;
 984     }
 985     queue_host_ioctl( console->server, IOCTL_CONDRV_READ_FILE, 0, async, &console->ioctl_q );
 986 }
 987
 988 static void console_flush( struct fd *fd, struct async *async )
 989 {
 990     struct console *console = get_fd_user( fd );
 991
 992     if (!console->server)
 993     {
 994         set_error( STATUS_INVALID_HANDLE );
 995         return;
 996     }
 997     queue_host_ioctl( console->server, IOCTL_CONDRV_FLUSH, 0, NULL, NULL );
 998 }
 999
1000 static void screen_buffer_write( struct fd *fd, struct async *async, file_pos_t pos )
1001 {
1002     struct screen_buffer *screen_buffer = get_fd_user( fd );
1003
1004     if (!screen_buffer->input || !screen_buffer->input->server)
1005     {
1006         set_error( STATUS_INVALID_HANDLE );
1007         return;
1008     }
1009
1010     queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_WRITE_FILE,
1011                       screen_buffer->id, async, &screen_buffer->ioctl_q );
1012 }
1013
1014 static void screen_buffer_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1015 {
1016     struct screen_buffer *screen_buffer = get_fd_user( fd );
1017
1018     switch (code)
1019     {
1020     case IOCTL_CONDRV_ACTIVATE:
1021         if (!screen_buffer->input)
1022         {
1023             set_error( STATUS_INVALID_HANDLE );
1024             return;
1025         }
1026
1027         set_active_screen_buffer( screen_buffer->input, screen_buffer );
1028         return;
1029
1030     default:
1031         if (!screen_buffer->input || !screen_buffer->input->server || code >> 16 != FILE_DEVICE_CONSOLE ||
1032             is_blocking_read_ioctl( code ))
1033         {
1034             set_error( STATUS_INVALID_HANDLE );
1035             return;
1036         }
1037         queue_host_ioctl( screen_buffer->input->server, code, screen_buffer->id,
1038                           async, &screen_buffer->ioctl_q );
1039     }
1040 }
1041
1042 static void console_connection_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1043 {
1044     struct console_connection *console_connection = get_fd_user( fd );
1045
1046     switch (code)
1047     {
1048     case IOCTL_CONDRV_BIND_PID:
1049         {
1050             struct process *process;
1051             unsigned int pid;
1052             if (get_req_data_size() != sizeof(unsigned int))
1053             {
1054                 set_error( STATUS_INVALID_PARAMETER );
1055                 return;
1056             }
1057             if (current->process->console)
1058             {
1059                 set_error( STATUS_INVALID_HANDLE );
1060                 return;
1061             }
1062
1063             pid = *(unsigned int *)get_req_data();
1064             if (pid == ATTACH_PARENT_PROCESS) pid = current->process->parent_id;
1065             if (!(process = get_process_from_id( pid ))) return;
1066
1067             if (process->console)
1068                 current->process->console = (struct console *)grab_object( process->console );
1069             else set_error( STATUS_ACCESS_DENIED );
1070             release_object( process );
1071             return;
1072         }
1073
1074     default:
1075         default_fd_ioctl( console_connection->fd, code, async );
1076     }
1077 }
1078
1079 static void console_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1080 {
1081     struct console_server *server = get_fd_user( fd );
1082
1083     switch (code)
1084     {
1085     case IOCTL_CONDRV_CTRL_EVENT:
1086         {
1087             const struct condrv_ctrl_event *event = get_req_data();
1088             if (get_req_data_size() != sizeof(*event))
1089             {
1090                 set_error( STATUS_INVALID_PARAMETER );
1091                 return;
1092             }
1093             if (!server->console)
1094             {
1095                 set_error( STATUS_INVALID_HANDLE );
1096                 return;
1097             }
1098             propagate_console_signal( server->console, event->event, event->group_id );
1099             return;
1100         }
1101
1102     case IOCTL_CONDRV_SETUP_INPUT:
1103         {
1104             struct termios term;
1105             obj_handle_t handle;
1106             struct file *file;
1107             int unix_fd;
1108
1109             if (get_req_data_size() != sizeof(unsigned int) || get_reply_max_size())
1110             {
1111                 set_error( STATUS_INVALID_PARAMETER );
1112                 return;
1113             }
1114             if (server->term_fd != -1)
1115             {
1116                 tcsetattr( server->term_fd, TCSANOW, &server->termios );
1117                 close( server->term_fd );
1118                 server->term_fd = -1;
1119             }
1120             handle = *(unsigned int *)get_req_data();
1121             if (!handle) return;
1122             if (!(file = get_file_obj( current->process, handle, FILE_READ_DATA  )))
1123             {
1124                 return;
1125             }
1126             unix_fd = get_file_unix_fd( file );
1127             release_object( file );
1128
1129             if (tcgetattr( unix_fd, &server->termios ))
1130             {
1131                 file_set_error();
1132                 return;
1133             }
1134             term = server->termios;
1135             term.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
1136             term.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
1137             term.c_cflag &= ~(CSIZE | PARENB);
1138             term.c_cflag |= CS8;
1139             term.c_cc[VMIN] = 1;
1140             term.c_cc[VTIME] = 0;
1141             if (tcsetattr( unix_fd, TCSANOW, &term ) || (server->term_fd = dup( unix_fd )) == -1)
1142                 file_set_error();
1143             return;
1144         }
1145
1146     default:
1147         set_error( STATUS_INVALID_HANDLE );
1148         return;
1149     }
1150 }
1151
1152 static void console_connection_dump( struct object *obj, int verbose )
1153 {
1154     fputs( "console connection\n", stderr );
1155 }
1156
1157 static struct fd *console_connection_get_fd( struct object *obj )
1158 {
1159     struct console_connection *connection = (struct console_connection *)obj;
1160     return (struct fd *)grab_object( connection->fd );
1161 }
1162
1163 static struct object *console_connection_lookup_name( struct object *obj, struct unicode_str *name,
1164                                                       unsigned int attr, struct object *root )
1165 {
1166     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
1167
1168     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
1169     {
1170         if (!current->process->console)
1171         {
1172             set_error( STATUS_INVALID_HANDLE );
1173             return NULL;
1174         }
1175         name->len = 0;
1176         return grab_object( current->process->console );
1177     }
1178
1179     return NULL;
1180 }
1181
1182 static struct object *console_connection_open_file( struct object *obj, unsigned int access,
1183                                                     unsigned int sharing, unsigned int options )
1184 {
1185     return grab_object( obj );
1186 }
1187
1188 static int console_connection_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1189 {
1190     struct console *console = process->console;
1191
1192     if (console)
1193     {
1194         process->console = NULL;
1195         release_object( console );
1196     }
1197     return 1;
1198 }
1199
1200 static void console_connection_destroy( struct object *obj )
1201 {
1202     struct console_connection *connection = (struct console_connection *)obj;
1203     if (connection->fd) release_object( connection->fd );
1204 }
1205
1206 static void console_device_dump( struct object *obj, int verbose )
1207 {
1208     fputs( "Console device\n", stderr );
1209 }
1210
1211 static struct object *console_device_lookup_name( struct object *obj, struct unicode_str *name,
1212                                                   unsigned int attr, struct object *root )
1213 {
1214     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
1215     static const WCHAR consoleW[]       = {'C','o','n','s','o','l','e'};
1216     static const WCHAR current_inW[]    = {'C','u','r','r','e','n','t','I','n'};
1217     static const WCHAR current_outW[]   = {'C','u','r','r','e','n','t','O','u','t'};
1218     static const WCHAR inputW[]         = {'I','n','p','u','t'};
1219     static const WCHAR outputW[]        = {'O','u','t','p','u','t'};
1220     static const WCHAR screen_bufferW[] = {'S','c','r','e','e','n','B','u','f','f','e','r'};
1221     static const WCHAR serverW[]        = {'S','e','r','v','e','r'};
1222
1223     if (name->len == sizeof(current_inW) && !memcmp( name->str, current_inW, name->len ))
1224     {
1225         if (!current->process->console)
1226         {
1227             set_error( STATUS_INVALID_HANDLE );
1228             return NULL;
1229         }
1230         name->len = 0;
1231         return grab_object( current->process->console );
1232     }
1233
1234     if (name->len == sizeof(current_outW) && !memcmp( name->str, current_outW, name->len ))
1235     {
1236         if (!current->process->console || !current->process->console->active)
1237         {
1238             set_error( STATUS_INVALID_HANDLE );
1239             return NULL;
1240         }
1241         name->len = 0;
1242         return grab_object( current->process->console->active );
1243     }
1244
1245     if (name->len == sizeof(consoleW) && !memcmp( name->str, consoleW, name->len ))
1246     {
1247         name->len = 0;
1248         return grab_object( obj );
1249     }
1250
1251     if (name->len == sizeof(inputW) && !memcmp( name->str, inputW, name->len ))
1252     {
1253         struct console_input *console_input;
1254         name->len = 0;
1255         if (!(console_input = alloc_object( &console_input_ops ))) return NULL;
1256         console_input->fd = alloc_pseudo_fd( &console_input_fd_ops, &console_input->obj,
1257                                              FILE_SYNCHRONOUS_IO_NONALERT );
1258         if (!console_input->fd)
1259         {
1260             release_object( console_input );
1261             return NULL;
1262         }
1263         return &console_input->obj;
1264     }
1265
1266     if (name->len == sizeof(outputW) && !memcmp( name->str, outputW, name->len ))
1267     {
1268         struct console_output *console_output;
1269         name->len = 0;
1270         if (!(console_output = alloc_object( &console_output_ops ))) return NULL;
1271         console_output->fd = alloc_pseudo_fd( &console_output_fd_ops, &console_output->obj,
1272                                              FILE_SYNCHRONOUS_IO_NONALERT );
1273         if (!console_output->fd)
1274         {
1275             release_object( console_output );
1276             return NULL;
1277         }
1278         return &console_output->obj;
1279     }
1280
1281     if (name->len == sizeof(screen_bufferW) && !memcmp( name->str, screen_bufferW, name->len ))
1282     {
1283         if (!current->process->console)
1284         {
1285             set_error( STATUS_INVALID_HANDLE );
1286             return NULL;
1287         }
1288         name->len = 0;
1289         return create_screen_buffer( current->process->console );
1290     }
1291
1292     if (name->len == sizeof(serverW) && !memcmp( name->str, serverW, name->len ))
1293     {
1294         name->len = 0;
1295         return create_console_server();
1296     }
1297
1298     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
1299     {
1300         name->len = 0;
1301         return create_console_connection( NULL );
1302     }
1303
1304     return NULL;
1305 }
1306
1307 static struct object *console_device_open_file( struct object *obj, unsigned int access,
1308                                                 unsigned int sharing, unsigned int options )
1309 {
1310     int is_output;
1311     access = default_map_access( obj, access );
1312     is_output = access & FILE_WRITE_DATA;
1313     if (!current->process->console || (is_output && !current->process->console))
1314     {
1315         set_error( STATUS_INVALID_HANDLE );
1316         return NULL;
1317     }
1318     if (is_output && (access & FILE_READ_DATA))
1319     {
1320         set_error( STATUS_INVALID_PARAMETER );
1321         return NULL;
1322     }
1323     return is_output ? grab_object( current->process->console->active ) : grab_object( current->process->console );
1324 }
1325
1326 static void console_input_dump( struct object *obj, int verbose )
1327 {
1328     fputs( "console Input device\n", stderr );
1329 }
1330
1331 static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry )
1332 {
1333     if (!current->process->console)
1334     {
1335         set_error( STATUS_ACCESS_DENIED );
1336         return 0;
1337     }
1338     return console_add_queue( &current->process->console->obj, entry );
1339 }
1340
1341 static struct fd *console_input_get_fd( struct object *obj )
1342 {
1343     struct console_input *console_input = (struct console_input *)obj;
1344     assert( obj->ops == &console_input_ops );
1345     return (struct fd *)grab_object( console_input->fd );
1346 }
1347
1348 static struct object *console_input_open_file( struct object *obj, unsigned int access,
1349                                                unsigned int sharing, unsigned int options )
1350 {
1351     return grab_object( obj );
1352 }
1353
1354 static void console_input_destroy( struct object *obj )
1355 {
1356     struct console_input *console_input = (struct console_input *)obj;
1357
1358     assert( obj->ops == &console_input_ops );
1359     if (console_input->fd) release_object( console_input->fd );
1360 }
1361
1362 static void console_input_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1363 {
1364     struct console *console = current->process->console;
1365
1366     if (!console)
1367     {
1368         set_error( STATUS_INVALID_HANDLE );
1369         return;
1370     }
1371     console_ioctl( console->fd, code, async );
1372 }
1373
1374 static void console_input_read( struct fd *fd, struct async *async, file_pos_t pos )
1375 {
1376     struct console *console = current->process->console;
1377
1378     if (!console)
1379     {
1380         set_error( STATUS_INVALID_HANDLE );
1381         return;
1382     }
1383     console_read( console->fd, async, pos );
1384 }
1385
1386 static void console_input_flush( struct fd *fd, struct async *async )
1387 {
1388     struct console *console = current->process->console;
1389
1390     if (!console)
1391     {
1392         set_error( STATUS_INVALID_HANDLE );
1393         return;
1394     }
1395     console_flush( console->fd, async );
1396 }
1397
1398 static void console_output_dump( struct object *obj, int verbose )
1399 {
1400     fputs( "console Output device\n", stderr );
1401 }
1402
1403 static int console_output_add_queue( struct object *obj, struct wait_queue_entry *entry )
1404 {
1405     if (!current->process->console || !current->process->console->active)
1406     {
1407         set_error( STATUS_ACCESS_DENIED );
1408         return 0;
1409     }
1410     return console_add_queue( &current->process->console->obj, entry );
1411 }
1412
1413 static struct fd *console_output_get_fd( struct object *obj )
1414 {
1415     struct console_output *console_output = (struct console_output *)obj;
1416     assert( obj->ops == &console_output_ops );
1417     return (struct fd *)grab_object( console_output->fd );
1418 }
1419
1420 static struct object *console_output_open_file( struct object *obj, unsigned int access,
1421                                                 unsigned int sharing, unsigned int options )
1422 {
1423     return grab_object( obj );
1424 }
1425
1426 static void console_output_destroy( struct object *obj )
1427 {
1428     struct console_output *console_output = (struct console_output *)obj;
1429
1430     assert( obj->ops == &console_output_ops );
1431     if (console_output->fd) release_object( console_output->fd );
1432 }
1433
1434 static void console_output_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1435 {
1436     struct console *console = current->process->console;
1437
1438     if (!console || !console->active)
1439     {
1440         set_error( STATUS_INVALID_HANDLE );
1441         return;
1442     }
1443     screen_buffer_ioctl( console->active->fd, code, async );
1444 }
1445
1446 static void console_output_write( struct fd *fd, struct async *async, file_pos_t pos )
1447 {
1448     struct console *console = current->process->console;
1449
1450     if (!console || !console->active)
1451     {
1452         set_error( STATUS_INVALID_HANDLE );
1453         return;
1454     }
1455     screen_buffer_write( console->active->fd, async, pos );
1456 }
1457
1458 struct object *create_console_device( struct object *root, const struct unicode_str *name,
1459                                       unsigned int attr, const struct security_descriptor *sd )
1460 {
1461     return create_named_object( root, &console_device_ops, name, attr, sd );
1462 }
1463
1464 /* retrieve the next pending console ioctl request */
1465 DECL_HANDLER(get_next_console_request)
1466 {
1467     struct console_host_ioctl *ioctl = NULL, *next;
1468     struct console_server *server;
1469     struct iosb *iosb = NULL;
1470
1471     server = (struct console_server *)get_handle_obj( current->process, req->handle, 0, &console_server_ops );
1472     if (!server) return;
1473
1474     if (!server->console)
1475     {
1476         set_error( STATUS_INVALID_HANDLE );
1477         release_object( server );
1478         return;
1479     }
1480
1481     if (!server->console->renderer) server->console->renderer = current;
1482
1483     if (!req->signal) server->console->signaled = 0;
1484     else if (!server->console->signaled)
1485     {
1486         server->console->signaled = 1;
1487         wake_up( &server->console->obj, 0 );
1488     }
1489
1490     if (req->read)
1491     {
1492         /* set result of current pending ioctl */
1493         if (list_empty( &server->read_queue ))
1494         {
1495             set_error( STATUS_INVALID_HANDLE );
1496             release_object( server );
1497             return;
1498         }
1499
1500         ioctl = LIST_ENTRY( list_head( &server->read_queue ), struct console_host_ioctl, entry );
1501         list_remove( &ioctl->entry );
1502         list_move_tail( &server->queue, &server->read_queue );
1503     }
1504     else if (server->busy)
1505     {
1506         /* set result of previous ioctl */
1507         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1508         list_remove( &ioctl->entry );
1509     }
1510
1511     if (ioctl)
1512     {
1513         struct async *async = ioctl->async;
1514         unsigned int status = req->status;
1515
1516         if (status == STATUS_PENDING) status = STATUS_INVALID_PARAMETER;
1517         if (async)
1518         {
1519             iosb = async_get_iosb( async );
1520             if (iosb->status == STATUS_PENDING)
1521             {
1522                 data_size_t out_size = min( iosb->out_size, get_req_data_size() );
1523                 data_size_t result = ioctl->code == IOCTL_CONDRV_WRITE_FILE ? iosb->in_size : out_size;
1524                 async_request_complete_alloc( async, status, result, out_size, get_req_data() );
1525             }
1526
1527             release_object( async );
1528         }
1529         free( ioctl );
1530         if (iosb) release_object( iosb );
1531
1532         if (req->read)
1533         {
1534             release_object( server );
1535             return;
1536         }
1537         server->busy = 0;
1538     }
1539
1540     /* if we have a blocking read ioctl in queue head and previous blocking read is still waiting,
1541      * move it to read queue for execution after current read is complete. move all blocking
1542      * ioctl at the same time to preserve their order. */
1543     if (!list_empty( &server->queue ) && !list_empty( &server->read_queue ))
1544     {
1545         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1546         if (is_blocking_read_ioctl( ioctl->code ))
1547         {
1548             LIST_FOR_EACH_ENTRY_SAFE( ioctl, next, &server->queue, struct console_host_ioctl, entry )
1549             {
1550                 if (!is_blocking_read_ioctl( ioctl->code )) continue;
1551                 list_remove( &ioctl->entry );
1552                 list_add_tail( &server->read_queue, &ioctl->entry );
1553             }
1554         }
1555     }
1556
1557     /* return the next ioctl */
1558     if (!list_empty( &server->queue ))
1559     {
1560         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1561         iosb = ioctl->async ? async_get_iosb( ioctl->async ) : NULL;
1562
1563         if (!iosb || get_reply_max_size() >= iosb->in_size)
1564         {
1565             reply->code   = ioctl->code;
1566             reply->output = ioctl->output;
1567
1568             if (iosb)
1569             {
1570                 reply->out_size = iosb->out_size;
1571                 set_reply_data_ptr( iosb->in_data, iosb->in_size );
1572                 iosb->in_data = NULL;
1573             }
1574
1575             if (is_blocking_read_ioctl( ioctl->code ))
1576             {
1577                 list_remove( &ioctl->entry );
1578                 assert( list_empty( &server->read_queue ));
1579                 list_add_tail( &server->read_queue, &ioctl->entry );
1580             }
1581             else server->busy = 1;
1582         }
1583         else
1584         {
1585             reply->out_size = iosb->in_size;
1586             set_error( STATUS_BUFFER_OVERFLOW );
1587         }
1588         if (iosb) release_object( iosb );
1589     }
1590     else
1591     {
1592         set_error( STATUS_PENDING );
1593     }
1594
1595     release_object( server );
1596 }