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 #include "wine/port.h"
  26
  27 #include <assert.h>
  28 #include <string.h>
  29 #include <stdio.h>
  30 #include <unistd.h>
  31 #include <signal.h>
  32 #include <sys/ioctl.h>
  33 #include <termios.h>
  34
  35 #include "ntstatus.h"
  36 #define WIN32_NO_STATUS
  37 #include "handle.h"
  38 #include "process.h"
  39 #include "request.h"
  40 #include "file.h"
  41 #include "unicode.h"
  42 #include "wincon.h"
  43 #include "winternl.h"
  44 #include "wine/condrv.h"
  45
  46 struct screen_buffer;
  47
  48 struct history_line
  49 {
  50     data_size_t len;
  51     WCHAR       text[1];
  52 };
  53
  54 struct console
  55 {
  56     struct object                obj;           /* object header */
  57     int                          signaled;      /* is console signaled */
  58     struct thread               *renderer;      /* console renderer thread */
  59     struct screen_buffer        *active;        /* active screen buffer */
  60     struct console_server       *server;        /* console server object */
  61     unsigned int                 last_id;       /* id of last created console buffer */
  62     struct fd                   *fd;            /* for bare console, attached input fd */
  63     struct async_queue           ioctl_q;       /* ioctl queue */
  64     struct async_queue           read_q;        /* read queue */
  65 };
  66
  67 static void console_dump( struct object *obj, int verbose );
  68 static void console_destroy( struct object *obj );
  69 static int console_signaled( struct object *obj, struct wait_queue_entry *entry );
  70 static struct fd *console_get_fd( struct object *obj );
  71 static struct object *console_lookup_name( struct object *obj, struct unicode_str *name,
  72                                            unsigned int attr, struct object *root );
  73 static struct object *console_open_file( struct object *obj, unsigned int access,
  74                                          unsigned int sharing, unsigned int options );
  75
  76 static const struct object_ops console_ops =
  77 {
  78     sizeof(struct console),           /* size */
  79     &file_type,                       /* type */
  80     console_dump,                     /* dump */
  81     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 int console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 103 static int console_read( struct fd *fd, struct async *async, file_pos_t pos );
 104 static int console_flush( struct fd *fd, struct async *async );
 105 static int 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_queue_async,       /* queue_async */
 119     default_fd_reselect_async     /* reselect_async */
 120 };
 121
 122 struct console_host_ioctl
 123 {
 124     unsigned int          code;        /* ioctl code */
 125     int                   output;      /* output id for screen buffer ioctls */
 126     struct async         *async;       /* ioctl async */
 127     struct list           entry;       /* list entry */
 128 };
 129
 130 struct console_server
 131 {
 132     struct object         obj;         /* object header */
 133     struct fd            *fd;          /* pseudo-fd for ioctls */
 134     struct console       *console;     /* attached console */
 135     struct list           queue;       /* ioctl queue */
 136     struct list           read_queue;  /* blocking read queue */
 137     int                   busy;        /* flag if server processing an ioctl */
 138     int                   term_fd;     /* UNIX terminal fd */
 139     struct termios        termios;     /* original termios */
 140 };
 141
 142 static void console_server_dump( struct object *obj, int verbose );
 143 static void console_server_destroy( struct object *obj );
 144 static int console_server_signaled( struct object *obj, struct wait_queue_entry *entry );
 145 static struct fd *console_server_get_fd( struct object *obj );
 146 static struct object *console_server_lookup_name( struct object *obj, struct unicode_str *name,
 147                                                 unsigned int attr, struct object *root );
 148 static struct object *console_server_open_file( struct object *obj, unsigned int access,
 149                                                 unsigned int sharing, unsigned int options );
 150
 151 static const struct object_ops console_server_ops =
 152 {
 153     sizeof(struct console_server),    /* size */
 154     &file_type,                       /* type */
 155     console_server_dump,              /* dump */
 156     add_queue,                        /* add_queue */
 157     remove_queue,                     /* remove_queue */
 158     console_server_signaled,          /* signaled */
 159     no_satisfied,                     /* satisfied */
 160     no_signal,                        /* signal */
 161     console_server_get_fd,            /* get_fd */
 162     default_map_access,               /* map_access */
 163     default_get_sd,                   /* get_sd */
 164     default_set_sd,                   /* set_sd */
 165     no_get_full_name,                 /* get_full_name */
 166     console_server_lookup_name,       /* lookup_name */
 167     no_link_name,                     /* link_name */
 168     NULL,                             /* unlink_name */
 169     console_server_open_file,         /* open_file */
 170     no_kernel_obj_list,               /* get_kernel_obj_list */
 171     no_close_handle,                  /* close_handle */
 172     console_server_destroy            /* destroy */
 173 };
 174
 175 static int console_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 176
 177 static const struct fd_ops console_server_fd_ops =
 178 {
 179     default_fd_get_poll_events,   /* get_poll_events */
 180     default_poll_event,           /* poll_event */
 181     console_get_fd_type,          /* get_fd_type */
 182     no_fd_read,                   /* read */
 183     no_fd_write,                  /* write */
 184     no_fd_flush,                  /* flush */
 185     no_fd_get_file_info,          /* get_file_info */
 186     no_fd_get_volume_info,        /* get_volume_info */
 187     console_server_ioctl,         /* ioctl */
 188     default_fd_queue_async,       /* queue_async */
 189     default_fd_reselect_async     /* reselect_async */
 190 };
 191
 192 struct font_info
 193 {
 194     short int width;
 195     short int height;
 196     short int weight;
 197     short int pitch_family;
 198     WCHAR    *face_name;
 199     data_size_t face_len;
 200 };
 201
 202 struct screen_buffer
 203 {
 204     struct object         obj;           /* object header */
 205     struct list           entry;         /* entry in list of all screen buffers */
 206     struct console       *input;         /* associated console input */
 207     unsigned int          id;            /* buffer id */
 208     struct fd            *fd;            /* for bare console, attached output fd */
 209     struct async_queue    ioctl_q;       /* ioctl queue */
 210 };
 211
 212 static void screen_buffer_dump( struct object *obj, int verbose );
 213 static void screen_buffer_destroy( struct object *obj );
 214 static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry );
 215 static struct fd *screen_buffer_get_fd( struct object *obj );
 216 static struct object *screen_buffer_open_file( struct object *obj, unsigned int access,
 217                                                unsigned int sharing, unsigned int options );
 218
 219 static const struct object_ops screen_buffer_ops =
 220 {
 221     sizeof(struct screen_buffer),     /* size */
 222     &file_type,                       /* type */
 223     screen_buffer_dump,               /* dump */
 224     screen_buffer_add_queue,          /* add_queue */
 225     NULL,                             /* remove_queue */
 226     NULL,                             /* signaled */
 227     NULL,                             /* satisfied */
 228     no_signal,                        /* signal */
 229     screen_buffer_get_fd,             /* get_fd */
 230     default_map_access,               /* map_access */
 231     default_get_sd,                   /* get_sd */
 232     default_set_sd,                   /* set_sd */
 233     no_get_full_name,                 /* get_full_name */
 234     no_lookup_name,                   /* lookup_name */
 235     no_link_name,                     /* link_name */
 236     NULL,                             /* unlink_name */
 237     screen_buffer_open_file,          /* open_file */
 238     no_kernel_obj_list,               /* get_kernel_obj_list */
 239     no_close_handle,                  /* close_handle */
 240     screen_buffer_destroy             /* destroy */
 241 };
 242
 243 static int screen_buffer_write( struct fd *fd, struct async *async, file_pos_t pos );
 244 static int screen_buffer_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 245
 246 static const struct fd_ops screen_buffer_fd_ops =
 247 {
 248     default_fd_get_poll_events,   /* get_poll_events */
 249     default_poll_event,           /* poll_event */
 250     console_get_fd_type,          /* get_fd_type */
 251     no_fd_read,                   /* read */
 252     screen_buffer_write,          /* write */
 253     no_fd_flush,                  /* flush */
 254     console_get_file_info,        /* get_file_info */
 255     console_get_volume_info,      /* get_volume_info */
 256     screen_buffer_ioctl,          /* ioctl */
 257     default_fd_queue_async,       /* queue_async */
 258     default_fd_reselect_async     /* reselect_async */
 259 };
 260
 261 static void console_device_dump( struct object *obj, int verbose );
 262 static struct object *console_device_lookup_name( struct object *obj, struct unicode_str *name,
 263                                                 unsigned int attr, struct object *root );
 264 static struct object *console_device_open_file( struct object *obj, unsigned int access,
 265                                                 unsigned int sharing, unsigned int options );
 266
 267 static const struct object_ops console_device_ops =
 268 {
 269     sizeof(struct object),            /* size */
 270     &device_type,                     /* type */
 271     console_device_dump,              /* dump */
 272     no_add_queue,                     /* add_queue */
 273     NULL,                             /* remove_queue */
 274     NULL,                             /* signaled */
 275     no_satisfied,                     /* satisfied */
 276     no_signal,                        /* signal */
 277     no_get_fd,                        /* get_fd */
 278     default_map_access,               /* map_access */
 279     default_get_sd,                   /* get_sd */
 280     default_set_sd,                   /* set_sd */
 281     default_get_full_name,            /* get_full_name */
 282     console_device_lookup_name,       /* lookup_name */
 283     directory_link_name,              /* link_name */
 284     default_unlink_name,              /* unlink_name */
 285     console_device_open_file,         /* open_file */
 286     no_kernel_obj_list,               /* get_kernel_obj_list */
 287     no_close_handle,                  /* close_handle */
 288     no_destroy                        /* destroy */
 289 };
 290
 291 struct console_input
 292 {
 293     struct object         obj;         /* object header */
 294     struct fd            *fd;          /* pseudo-fd */
 295 };
 296
 297 static void console_input_dump( struct object *obj, int verbose );
 298 static struct object *console_input_open_file( struct object *obj, unsigned int access,
 299                                                unsigned int sharing, unsigned int options );
 300 static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry );
 301 static struct fd *console_input_get_fd( struct object *obj );
 302 static void console_input_destroy( struct object *obj );
 303
 304 static const struct object_ops console_input_ops =
 305 {
 306     sizeof(struct console_input),     /* size */
 307     &device_type,                     /* type */
 308     console_input_dump,               /* dump */
 309     console_input_add_queue,          /* add_queue */
 310     NULL,                             /* remove_queue */
 311     NULL,                             /* signaled */
 312     no_satisfied,                     /* satisfied */
 313     no_signal,                        /* signal */
 314     console_input_get_fd,             /* get_fd */
 315     default_map_access,               /* map_access */
 316     default_get_sd,                   /* get_sd */
 317     default_set_sd,                   /* set_sd */
 318     no_get_full_name,                 /* get_full_name */
 319     no_lookup_name,                   /* lookup_name */
 320     directory_link_name,              /* link_name */
 321     default_unlink_name,              /* unlink_name */
 322     console_input_open_file,          /* open_file */
 323     no_kernel_obj_list,               /* get_kernel_obj_list */
 324     no_close_handle,                  /* close_handle */
 325     console_input_destroy             /* destroy */
 326 };
 327
 328 static int console_input_read( struct fd *fd, struct async *async, file_pos_t pos );
 329 static int console_input_flush( struct fd *fd, struct async *async );
 330 static int console_input_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 331
 332 static const struct fd_ops console_input_fd_ops =
 333 {
 334     default_fd_get_poll_events,   /* get_poll_events */
 335     default_poll_event,           /* poll_event */
 336     console_get_fd_type,          /* get_fd_type */
 337     console_input_read,           /* read */
 338     no_fd_write,                  /* write */
 339     console_input_flush,          /* flush */
 340     console_get_file_info,        /* get_file_info */
 341     console_get_volume_info,      /* get_volume_info */
 342     console_input_ioctl,          /* ioctl */
 343     default_fd_queue_async,       /* queue_async */
 344     default_fd_reselect_async     /* reselect_async */
 345 };
 346
 347 struct console_output
 348 {
 349     struct object         obj;         /* object header */
 350     struct fd            *fd;          /* pseudo-fd */
 351 };
 352
 353 static void console_output_dump( struct object *obj, int verbose );
 354 static int console_output_add_queue( struct object *obj, struct wait_queue_entry *entry );
 355 static struct fd *console_output_get_fd( struct object *obj );
 356 static struct object *console_output_open_file( struct object *obj, unsigned int access,
 357                                                 unsigned int sharing, unsigned int options );
 358 static void console_output_destroy( struct object *obj );
 359
 360 static const struct object_ops console_output_ops =
 361 {
 362     sizeof(struct console_output),    /* size */
 363     &device_type,                     /* type */
 364     console_output_dump,              /* dump */
 365     console_output_add_queue,         /* add_queue */
 366     NULL,                             /* remove_queue */
 367     NULL,                             /* signaled */
 368     no_satisfied,                     /* satisfied */
 369     no_signal,                        /* signal */
 370     console_output_get_fd,            /* get_fd */
 371     default_map_access,               /* map_access */
 372     default_get_sd,                   /* get_sd */
 373     default_set_sd,                   /* set_sd */
 374     no_get_full_name,                 /* get_full_name */
 375     no_lookup_name,                   /* lookup_name */
 376     directory_link_name,              /* link_name */
 377     default_unlink_name,              /* unlink_name */
 378     console_output_open_file,         /* open_file */
 379     no_kernel_obj_list,               /* get_kernel_obj_list */
 380     no_close_handle,                  /* close_handle */
 381     console_output_destroy            /* destroy */
 382 };
 383
 384 static int console_output_write( struct fd *fd, struct async *async, file_pos_t pos );
 385 static int console_output_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 386
 387 static const struct fd_ops console_output_fd_ops =
 388 {
 389     default_fd_get_poll_events,   /* get_poll_events */
 390     default_poll_event,           /* poll_event */
 391     console_get_fd_type,          /* get_fd_type */
 392     no_fd_read,                   /* read */
 393     console_output_write,         /* write */
 394     no_fd_flush,                  /* flush */
 395     console_get_file_info,        /* get_file_info */
 396     console_get_volume_info,      /* get_volume_info */
 397     console_output_ioctl,         /* ioctl */
 398     default_fd_queue_async,       /* queue_async */
 399     default_fd_reselect_async     /* reselect_async */
 400 };
 401
 402 struct console_connection
 403 {
 404     struct object         obj;         /* object header */
 405     struct fd            *fd;          /* pseudo-fd for ioctls */
 406 };
 407
 408 static void console_connection_dump( struct object *obj, int verbose );
 409 static struct fd *console_connection_get_fd( struct object *obj );
 410 static struct object *console_connection_lookup_name( struct object *obj, struct unicode_str *name,
 411                                                     unsigned int attr, struct object *root );
 412 static struct object *console_connection_open_file( struct object *obj, unsigned int access,
 413                                                     unsigned int sharing, unsigned int options );
 414 static int console_connection_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
 415 static void console_connection_destroy( struct object *obj );
 416
 417 static const struct object_ops console_connection_ops =
 418 {
 419     sizeof(struct console_connection),/* size */
 420     &device_type,                     /* type */
 421     console_connection_dump,          /* dump */
 422     no_add_queue,                     /* add_queue */
 423     NULL,                             /* remove_queue */
 424     NULL,                             /* signaled */
 425     no_satisfied,                     /* satisfied */
 426     no_signal,                        /* signal */
 427     console_connection_get_fd,        /* get_fd */
 428     default_map_access,               /* map_access */
 429     default_get_sd,                   /* get_sd */
 430     default_set_sd,                   /* set_sd */
 431     no_get_full_name,                 /* get_full_name */
 432     console_connection_lookup_name,   /* lookup_name */
 433     directory_link_name,              /* link_name */
 434     default_unlink_name,              /* unlink_name */
 435     console_connection_open_file,     /* open_file */
 436     no_kernel_obj_list,               /* get_kernel_obj_list */
 437     console_connection_close_handle,  /* close_handle */
 438     console_connection_destroy        /* destroy */
 439 };
 440
 441 static int console_connection_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 442
 443 static const struct fd_ops console_connection_fd_ops =
 444 {
 445     default_fd_get_poll_events,   /* get_poll_events */
 446     default_poll_event,           /* poll_event */
 447     console_get_fd_type,          /* get_fd_type */
 448     no_fd_read,                   /* read */
 449     no_fd_write,                  /* write */
 450     no_fd_flush,                  /* flush */
 451     no_fd_get_file_info,          /* get_file_info */
 452     no_fd_get_volume_info,        /* get_volume_info */
 453     console_connection_ioctl,     /* ioctl */
 454     default_fd_queue_async,       /* queue_async */
 455     default_fd_reselect_async     /* reselect_async */
 456 };
 457
 458 static struct list screen_buffer_list = LIST_INIT(screen_buffer_list);
 459
 460 static int console_signaled( struct object *obj, struct wait_queue_entry *entry )
 461 {
 462     struct console *console = (struct console*)obj;
 463     return console->signaled;
 464 }
 465
 466 static struct fd *console_get_fd( struct object *obj )
 467 {
 468     struct console *console = (struct console *)obj;
 469     assert( obj->ops == &console_ops );
 470     return (struct fd *)grab_object( console->fd );
 471 }
 472
 473 static enum server_fd_type console_get_fd_type( struct fd *fd )
 474 {
 475     return FD_TYPE_CHAR;
 476 }
 477
 478 static void console_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class )
 479 {
 480     set_error( STATUS_INVALID_DEVICE_REQUEST );
 481 }
 482
 483 static int console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 484 {
 485     switch (info_class)
 486     {
 487     case FileFsDeviceInformation:
 488         {
 489             static const FILE_FS_DEVICE_INFORMATION device_info =
 490             {
 491                 FILE_DEVICE_CONSOLE,
 492                 FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL
 493             };
 494             if (get_reply_max_size() >= sizeof(device_info))
 495                 set_reply_data( &device_info, sizeof(device_info) );
 496             else
 497                 set_error( STATUS_BUFFER_TOO_SMALL );
 498             break;
 499         }
 500     default:
 501         set_error( STATUS_NOT_IMPLEMENTED );
 502     }
 503     return 0;
 504 }
 505
 506 static struct object *create_console(void)
 507 {
 508     struct console *console;
 509
 510     if (!(console = alloc_object( &console_ops )))
 511         return NULL;
 512
 513     console->renderer      = NULL;
 514     console->signaled      = 0;
 515     console->active        = NULL;
 516     console->server        = NULL;
 517     console->fd            = NULL;
 518     console->last_id       = 0;
 519     init_async_queue( &console->ioctl_q );
 520     init_async_queue( &console->read_q );
 521
 522     console->fd = alloc_pseudo_fd( &console_fd_ops, &console->obj, FILE_SYNCHRONOUS_IO_NONALERT );
 523     if (!console->fd)
 524     {
 525         release_object( console );
 526         return NULL;
 527     }
 528     allow_fd_caching( console->fd );
 529     return &console->obj;
 530 }
 531
 532 static void console_host_ioctl_terminate( struct console_host_ioctl *call, unsigned int status )
 533 {
 534     if (call->async)
 535     {
 536         async_terminate( call->async, status );
 537         release_object( call->async );
 538     }
 539     free( call );
 540 }
 541
 542 static int queue_host_ioctl( struct console_server *server, unsigned int code, unsigned int output,
 543                              struct async *async, struct async_queue *queue )
 544 {
 545     struct console_host_ioctl *ioctl;
 546
 547     if (!(ioctl = mem_alloc( sizeof(*ioctl) ))) return 0;
 548     ioctl->code   = code;
 549     ioctl->output = output;
 550     ioctl->async  = NULL;
 551     if (async)
 552     {
 553         ioctl->async = (struct async *)grab_object( async );
 554         queue_async( queue, async );
 555     }
 556     list_add_tail( &server->queue, &ioctl->entry );
 557     wake_up( &server->obj, 0 );
 558     if (async) set_error( STATUS_PENDING );
 559     return 1;
 560 }
 561
 562 static void disconnect_console_server( struct console_server *server )
 563 {
 564     while (!list_empty( &server->queue ))
 565     {
 566         struct console_host_ioctl *call = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
 567         list_remove( &call->entry );
 568         console_host_ioctl_terminate( call, STATUS_CANCELLED );
 569     }
 570     while (!list_empty( &server->read_queue ))
 571     {
 572         struct console_host_ioctl *call = LIST_ENTRY( list_head( &server->read_queue ), struct console_host_ioctl, entry );
 573         list_remove( &call->entry );
 574         console_host_ioctl_terminate( call, STATUS_CANCELLED );
 575     }
 576
 577     if (server->term_fd != -1)
 578     {
 579         tcsetattr( server->term_fd, TCSANOW, &server->termios );
 580         close( server->term_fd );
 581         server->term_fd = -1;
 582     }
 583
 584     if (server->console)
 585     {
 586         assert( server->console->server == server );
 587         server->console->server = NULL;
 588         server->console = NULL;
 589         wake_up( &server->obj, 0 );
 590     }
 591 }
 592
 593 static void set_active_screen_buffer( struct console *console, struct screen_buffer *screen_buffer )
 594 {
 595     if (console->active == screen_buffer) return;
 596     if (console->active) release_object( console->active );
 597     console->active = (struct screen_buffer *)grab_object( screen_buffer );
 598
 599     if (console->server) queue_host_ioctl( console->server, IOCTL_CONDRV_ACTIVATE,
 600                                            screen_buffer->id, NULL, NULL );
 601 }
 602
 603 static struct object *create_screen_buffer( struct console *console )
 604 {
 605     struct screen_buffer *screen_buffer;
 606
 607     if (console->last_id == ~0)
 608     {
 609         set_error( STATUS_NO_MEMORY );
 610         return NULL;
 611     }
 612
 613     if (!(screen_buffer = alloc_object( &screen_buffer_ops )))
 614         return NULL;
 615
 616     screen_buffer->id    = ++console->last_id;
 617     screen_buffer->input = console;
 618     init_async_queue( &screen_buffer->ioctl_q );
 619     list_add_head( &screen_buffer_list, &screen_buffer->entry );
 620
 621     screen_buffer->fd = alloc_pseudo_fd( &screen_buffer_fd_ops, &screen_buffer->obj,
 622                                          FILE_SYNCHRONOUS_IO_NONALERT );
 623     if (!screen_buffer->fd)
 624     {
 625         release_object( screen_buffer );
 626         return NULL;
 627     }
 628     allow_fd_caching(screen_buffer->fd);
 629
 630     if (console->server) queue_host_ioctl( console->server, IOCTL_CONDRV_INIT_OUTPUT,
 631                                            screen_buffer->id, NULL, NULL );
 632     if (!console->active) set_active_screen_buffer( console, screen_buffer );
 633     return &screen_buffer->obj;
 634 }
 635
 636 struct thread *console_get_renderer( struct console *console )
 637 {
 638     return console->renderer;
 639 }
 640
 641 struct console_signal_info
 642 {
 643     struct console        *console;
 644     process_id_t           group;
 645     int                    signal;
 646 };
 647
 648 static int propagate_console_signal_cb(struct process *process, void *user)
 649 {
 650     struct console_signal_info* csi = (struct console_signal_info*)user;
 651
 652     if (process->console == csi->console && (!csi->group || process->group_id == csi->group))
 653     {
 654         /* find a suitable thread to signal */
 655         struct thread *thread;
 656         LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
 657         {
 658             if (send_thread_signal( thread, csi->signal )) break;
 659         }
 660     }
 661     return FALSE;
 662 }
 663
 664 static void propagate_console_signal( struct console *console,
 665                                       int sig, process_id_t group_id )
 666 {
 667     struct console_signal_info csi;
 668
 669     if (!console)
 670     {
 671         set_error( STATUS_INVALID_PARAMETER );
 672         return;
 673     }
 674     /* FIXME: should support the other events (like CTRL_BREAK) */
 675     if (sig != CTRL_C_EVENT)
 676     {
 677         set_error( STATUS_NOT_IMPLEMENTED );
 678         return;
 679     }
 680     csi.console = console;
 681     csi.signal  = SIGINT;
 682     csi.group   = group_id;
 683
 684     enum_processes(propagate_console_signal_cb, &csi);
 685 }
 686
 687 /* dumb dump */
 688 static void console_dump( struct object *obj, int verbose )
 689 {
 690     struct console *console = (struct console *)obj;
 691     assert( obj->ops == &console_ops );
 692     fprintf( stderr, "Console input active=%p server=%p\n",
 693              console->active, console->server );
 694 }
 695
 696 static void console_destroy( struct object *obj )
 697 {
 698     struct console *console = (struct console *)obj;
 699     struct screen_buffer *curr;
 700
 701     assert( obj->ops == &console_ops );
 702
 703     if (console->server)
 704     {
 705         assert( console->server->console == console );
 706         disconnect_console_server( console->server );
 707     }
 708
 709     if (console->active) release_object( console->active );
 710     console->active = NULL;
 711
 712     LIST_FOR_EACH_ENTRY( curr, &screen_buffer_list, struct screen_buffer, entry )
 713     {
 714         if (curr->input == console) curr->input = NULL;
 715     }
 716
 717     free_async_queue( &console->ioctl_q );
 718     free_async_queue( &console->read_q );
 719     if (console->fd)
 720         release_object( console->fd );
 721 }
 722
 723 static struct object *create_console_connection( struct console *console )
 724 {
 725     struct console_connection *connection;
 726
 727     if (current->process->console)
 728     {
 729         set_error( STATUS_ACCESS_DENIED );
 730         return NULL;
 731     }
 732
 733     if (!(connection = alloc_object( &console_connection_ops ))) return NULL;
 734     if (!(connection->fd = alloc_pseudo_fd( &console_connection_fd_ops, &connection->obj, 0 )))
 735     {
 736         release_object( connection );
 737         return NULL;
 738     }
 739
 740     if (console)
 741         current->process->console = (struct console *)grab_object( console );
 742
 743     return &connection->obj;
 744 }
 745
 746 static struct object *console_lookup_name( struct object *obj, struct unicode_str *name,
 747                                            unsigned int attr, struct object *root )
 748 {
 749     struct console *console = (struct console *)obj;
 750     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
 751     assert( obj->ops == &console_ops );
 752
 753     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
 754     {
 755         name->len = 0;
 756         return create_console_connection( console );
 757     }
 758
 759     return NULL;
 760 }
 761
 762 static struct object *console_open_file( struct object *obj, unsigned int access,
 763                                                unsigned int sharing, unsigned int options )
 764 {
 765     return grab_object( obj );
 766 }
 767
 768 static void screen_buffer_dump( struct object *obj, int verbose )
 769 {
 770     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 771     assert( obj->ops == &screen_buffer_ops );
 772
 773     fprintf(stderr, "Console screen buffer input=%p\n", screen_buffer->input );
 774 }
 775
 776 static void screen_buffer_destroy( struct object *obj )
 777 {
 778     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 779
 780     assert( obj->ops == &screen_buffer_ops );
 781
 782     list_remove( &screen_buffer->entry );
 783     if (screen_buffer->input && screen_buffer->input->server)
 784         queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_CLOSE_OUTPUT,
 785                           screen_buffer->id, NULL, NULL );
 786     if (screen_buffer->fd) release_object( screen_buffer->fd );
 787     free_async_queue( &screen_buffer->ioctl_q );
 788 }
 789
 790 static struct object *screen_buffer_open_file( struct object *obj, unsigned int access,
 791                                                unsigned int sharing, unsigned int options )
 792 {
 793     return grab_object( obj );
 794 }
 795
 796 static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry )
 797 {
 798     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 799     if (!screen_buffer->input)
 800     {
 801         set_error( STATUS_ACCESS_DENIED );
 802         return 0;
 803     }
 804     return add_queue( &screen_buffer->input->obj, entry );
 805 }
 806
 807 static struct fd *screen_buffer_get_fd( struct object *obj )
 808 {
 809     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 810     assert( obj->ops == &screen_buffer_ops );
 811     if (screen_buffer->fd)
 812         return (struct fd*)grab_object( screen_buffer->fd );
 813     set_error( STATUS_OBJECT_TYPE_MISMATCH );
 814     return NULL;
 815 }
 816
 817 static void console_server_dump( struct object *obj, int verbose )
 818 {
 819     assert( obj->ops == &console_server_ops );
 820     fprintf( stderr, "Console server\n" );
 821 }
 822
 823 static void console_server_destroy( struct object *obj )
 824 {
 825     struct console_server *server = (struct console_server *)obj;
 826     assert( obj->ops == &console_server_ops );
 827     disconnect_console_server( server );
 828     if (server->fd) release_object( server->fd );
 829 }
 830
 831 static struct object *console_server_lookup_name( struct object *obj, struct unicode_str *name,
 832                                                   unsigned int attr, struct object *root )
 833 {
 834     struct console_server *server = (struct console_server*)obj;
 835     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
 836     assert( obj->ops == &console_server_ops );
 837
 838     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
 839     {
 840         struct screen_buffer *screen_buffer;
 841         name->len = 0;
 842         if (server->console)
 843         {
 844             set_error( STATUS_INVALID_HANDLE );
 845             return 0;
 846         }
 847         if (!(server->console = (struct console *)create_console())) return NULL;
 848         if (!(screen_buffer = (struct screen_buffer *)create_screen_buffer( server->console )))
 849         {
 850             release_object( server->console );
 851             server->console = NULL;
 852             return NULL;
 853         }
 854         release_object( screen_buffer );
 855         server->console->server = server;
 856
 857         return &server->console->obj;
 858     }
 859
 860     return NULL;
 861 }
 862
 863 static int console_server_signaled( struct object *obj, struct wait_queue_entry *entry )
 864 {
 865     struct console_server *server = (struct console_server*)obj;
 866     assert( obj->ops == &console_server_ops );
 867     return !server->console || !list_empty( &server->queue );
 868 }
 869
 870 static struct fd *console_server_get_fd( struct object* obj )
 871 {
 872     struct console_server *server = (struct console_server*)obj;
 873     assert( obj->ops == &console_server_ops );
 874     return (struct fd *)grab_object( server->fd );
 875 }
 876
 877 static struct object *console_server_open_file( struct object *obj, unsigned int access,
 878                                                 unsigned int sharing, unsigned int options )
 879 {
 880     return grab_object( obj );
 881 }
 882
 883 static struct object *create_console_server( void )
 884 {
 885     struct console_server *server;
 886
 887     if (!(server = alloc_object( &console_server_ops ))) return NULL;
 888     server->console = NULL;
 889     server->busy    = 0;
 890     server->term_fd = -1;
 891     list_init( &server->queue );
 892     list_init( &server->read_queue );
 893     server->fd = alloc_pseudo_fd( &console_server_fd_ops, &server->obj, FILE_SYNCHRONOUS_IO_NONALERT );
 894     if (!server->fd)
 895     {
 896         release_object( server );
 897         return NULL;
 898     }
 899     allow_fd_caching(server->fd);
 900
 901     return &server->obj;
 902 }
 903
 904 static int is_blocking_read_ioctl( unsigned int code )
 905 {
 906     switch (code)
 907     {
 908     case IOCTL_CONDRV_READ_INPUT:
 909     case IOCTL_CONDRV_READ_CONSOLE:
 910     case IOCTL_CONDRV_READ_FILE:
 911         return 1;
 912     default:
 913         return 0;
 914     }
 915 }
 916
 917 static int console_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
 918 {
 919     struct console *console = get_fd_user( fd );
 920
 921     switch (code)
 922     {
 923     case IOCTL_CONDRV_CTRL_EVENT:
 924         {
 925             const struct condrv_ctrl_event *event = get_req_data();
 926             process_id_t group;
 927             if (get_req_data_size() != sizeof(*event))
 928             {
 929                 set_error( STATUS_INVALID_PARAMETER );
 930                 return 0;
 931             }
 932             group = event->group_id ? event->group_id : current->process->group_id;
 933             if (!group)
 934             {
 935                 set_error( STATUS_INVALID_PARAMETER );
 936                 return 0;
 937             }
 938             propagate_console_signal( console, event->event, group );
 939             return !get_error();
 940         }
 941
 942     default:
 943         if (!console->server || code >> 16 != FILE_DEVICE_CONSOLE)
 944         {
 945             set_error( STATUS_INVALID_HANDLE );
 946             return 0;
 947         }
 948         return queue_host_ioctl( console->server, code, 0, async, &console->ioctl_q );
 949     }
 950 }
 951
 952 static int console_read( struct fd *fd, struct async *async, file_pos_t pos )
 953 {
 954     struct console *console = get_fd_user( fd );
 955
 956     if (!console->server)
 957     {
 958         set_error( STATUS_INVALID_HANDLE );
 959         return 0;
 960     }
 961     return queue_host_ioctl( console->server, IOCTL_CONDRV_READ_FILE, 0, async, &console->ioctl_q );
 962 }
 963
 964 static int console_flush( struct fd *fd, struct async *async )
 965 {
 966     struct console *console = get_fd_user( fd );
 967
 968     if (!console->server)
 969     {
 970         set_error( STATUS_INVALID_HANDLE );
 971         return 0;
 972     }
 973     return queue_host_ioctl( console->server, IOCTL_CONDRV_FLUSH, 0, NULL, NULL );
 974 }
 975
 976 static int screen_buffer_write( struct fd *fd, struct async *async, file_pos_t pos )
 977 {
 978     struct screen_buffer *screen_buffer = get_fd_user( fd );
 979     struct iosb *iosb;
 980
 981     if (!screen_buffer->input || !screen_buffer->input->server)
 982     {
 983         set_error( STATUS_INVALID_HANDLE );
 984         return 0;
 985     }
 986
 987     if (!queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_WRITE_FILE,
 988                            screen_buffer->id, async, &screen_buffer->ioctl_q ))
 989         return 0;
 990
 991     /* we can't use default async handling, because write result is not
 992      * compatible with ioctl result */
 993     iosb = async_get_iosb( async );
 994     iosb->result = iosb->in_size;
 995     release_object( iosb );
 996     return 1;
 997 }
 998
 999 static int screen_buffer_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1000 {
1001     struct screen_buffer *screen_buffer = get_fd_user( fd );
1002
1003     switch (code)
1004     {
1005     case IOCTL_CONDRV_ACTIVATE:
1006         if (!screen_buffer->input)
1007         {
1008             set_error( STATUS_INVALID_HANDLE );
1009             return 0;
1010         }
1011
1012         set_active_screen_buffer( screen_buffer->input, screen_buffer );
1013         return 1;
1014
1015     default:
1016         if (!screen_buffer->input || !screen_buffer->input->server || code >> 16 != FILE_DEVICE_CONSOLE ||
1017             is_blocking_read_ioctl( code ))
1018         {
1019             set_error( STATUS_INVALID_HANDLE );
1020             return 0;
1021         }
1022         return queue_host_ioctl( screen_buffer->input->server, code, screen_buffer->id,
1023                                  async, &screen_buffer->ioctl_q );
1024     }
1025 }
1026
1027 static int console_connection_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1028 {
1029     struct console_connection *console_connection = get_fd_user( fd );
1030
1031     switch (code)
1032     {
1033     case IOCTL_CONDRV_BIND_PID:
1034         {
1035             struct process *process;
1036             unsigned int pid;
1037             if (get_req_data_size() != sizeof(unsigned int))
1038             {
1039                 set_error( STATUS_INVALID_PARAMETER );
1040                 return 0;
1041             }
1042             if (current->process->console)
1043             {
1044                 set_error( STATUS_INVALID_HANDLE );
1045                 return 0;
1046             }
1047
1048             pid = *(unsigned int *)get_req_data();
1049             if (pid == ATTACH_PARENT_PROCESS) pid = current->process->parent_id;
1050             if (!(process = get_process_from_id( pid ))) return 0;
1051
1052             if (process->console)
1053                 current->process->console = (struct console *)grab_object( process->console );
1054             else set_error( STATUS_ACCESS_DENIED );
1055             release_object( process );
1056             return !get_error();
1057         }
1058
1059     default:
1060         return default_fd_ioctl( console_connection->fd, code, async );
1061     }
1062 }
1063
1064 static int console_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1065 {
1066     struct console_server *server = get_fd_user( fd );
1067
1068     switch (code)
1069     {
1070     case IOCTL_CONDRV_CTRL_EVENT:
1071         {
1072             const struct condrv_ctrl_event *event = get_req_data();
1073             if (get_req_data_size() != sizeof(*event))
1074             {
1075                 set_error( STATUS_INVALID_PARAMETER );
1076                 return 0;
1077             }
1078             if (!server->console)
1079             {
1080                 set_error( STATUS_INVALID_HANDLE );
1081                 return 0;
1082             }
1083             propagate_console_signal( server->console, event->event, event->group_id );
1084             return !get_error();
1085         }
1086
1087     case IOCTL_CONDRV_SETUP_INPUT:
1088         {
1089             struct termios term;
1090             obj_handle_t handle;
1091             struct file *file;
1092             int unix_fd;
1093
1094             if (get_req_data_size() != sizeof(unsigned int) || get_reply_max_size())
1095             {
1096                 set_error( STATUS_INVALID_PARAMETER );
1097                 return 0;
1098             }
1099             if (server->term_fd != -1)
1100             {
1101                 tcsetattr( server->term_fd, TCSANOW, &server->termios );
1102                 close( server->term_fd );
1103                 server->term_fd = -1;
1104             }
1105             handle = *(unsigned int *)get_req_data();
1106             if (!handle) return 1;
1107             if (!(file = get_file_obj( current->process, handle, FILE_READ_DATA  )))
1108             {
1109                 return 0;
1110             }
1111             unix_fd = get_file_unix_fd( file );
1112             release_object( file );
1113
1114             if (tcgetattr( unix_fd, &server->termios ))
1115             {
1116                 file_set_error();
1117                 return 0;
1118             }
1119             term = server->termios;
1120             term.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
1121             term.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
1122             term.c_cflag &= ~(CSIZE | PARENB);
1123             term.c_cflag |= CS8;
1124             term.c_cc[VMIN] = 1;
1125             term.c_cc[VTIME] = 0;
1126             if (tcsetattr( unix_fd, TCSANOW, &term ) || (server->term_fd = dup( unix_fd )) == -1)
1127             {
1128                 file_set_error();
1129                 return 0;
1130             }
1131             return 1;
1132         }
1133
1134     default:
1135         set_error( STATUS_INVALID_HANDLE );
1136         return 0;
1137     }
1138 }
1139
1140 static void console_connection_dump( struct object *obj, int verbose )
1141 {
1142     fputs( "console connection\n", stderr );
1143 }
1144
1145 static struct fd *console_connection_get_fd( struct object *obj )
1146 {
1147     struct console_connection *connection = (struct console_connection *)obj;
1148     return (struct fd *)grab_object( connection->fd );
1149 }
1150
1151 static struct object *console_connection_lookup_name( struct object *obj, struct unicode_str *name,
1152                                                       unsigned int attr, struct object *root )
1153 {
1154     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
1155
1156     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
1157     {
1158         if (!current->process->console)
1159         {
1160             set_error( STATUS_INVALID_HANDLE );
1161             return NULL;
1162         }
1163         name->len = 0;
1164         return grab_object( current->process->console );
1165     }
1166
1167     return NULL;
1168 }
1169
1170 static struct object *console_connection_open_file( struct object *obj, unsigned int access,
1171                                                     unsigned int sharing, unsigned int options )
1172 {
1173     return grab_object( obj );
1174 }
1175
1176 static int console_connection_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1177 {
1178     struct console *console = process->console;
1179
1180     if (console)
1181     {
1182         process->console = NULL;
1183         release_object( console );
1184     }
1185     return 1;
1186 }
1187
1188 static void console_connection_destroy( struct object *obj )
1189 {
1190     struct console_connection *connection = (struct console_connection *)obj;
1191     if (connection->fd) release_object( connection->fd );
1192 }
1193
1194 static void console_device_dump( struct object *obj, int verbose )
1195 {
1196     fputs( "Console device\n", stderr );
1197 }
1198
1199 static struct object *console_device_lookup_name( struct object *obj, struct unicode_str *name,
1200                                                   unsigned int attr, struct object *root )
1201 {
1202     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
1203     static const WCHAR consoleW[]       = {'C','o','n','s','o','l','e'};
1204     static const WCHAR current_inW[]    = {'C','u','r','r','e','n','t','I','n'};
1205     static const WCHAR current_outW[]   = {'C','u','r','r','e','n','t','O','u','t'};
1206     static const WCHAR inputW[]         = {'I','n','p','u','t'};
1207     static const WCHAR outputW[]        = {'O','u','t','p','u','t'};
1208     static const WCHAR screen_bufferW[] = {'S','c','r','e','e','n','B','u','f','f','e','r'};
1209     static const WCHAR serverW[]        = {'S','e','r','v','e','r'};
1210
1211     if (name->len == sizeof(current_inW) && !memcmp( name->str, current_inW, name->len ))
1212     {
1213         if (!current->process->console)
1214         {
1215             set_error( STATUS_INVALID_HANDLE );
1216             return NULL;
1217         }
1218         name->len = 0;
1219         return grab_object( current->process->console );
1220     }
1221
1222     if (name->len == sizeof(current_outW) && !memcmp( name->str, current_outW, name->len ))
1223     {
1224         if (!current->process->console || !current->process->console->active)
1225         {
1226             set_error( STATUS_INVALID_HANDLE );
1227             return NULL;
1228         }
1229         name->len = 0;
1230         return grab_object( current->process->console->active );
1231     }
1232
1233     if (name->len == sizeof(consoleW) && !memcmp( name->str, consoleW, name->len ))
1234     {
1235         name->len = 0;
1236         return grab_object( obj );
1237     }
1238
1239     if (name->len == sizeof(inputW) && !memcmp( name->str, inputW, name->len ))
1240     {
1241         struct console_input *console_input;
1242         name->len = 0;
1243         if (!(console_input = alloc_object( &console_input_ops ))) return NULL;
1244         console_input->fd = alloc_pseudo_fd( &console_input_fd_ops, &console_input->obj,
1245                                              FILE_SYNCHRONOUS_IO_NONALERT );
1246         if (!console_input->fd)
1247         {
1248             release_object( console_input );
1249             return NULL;
1250         }
1251         return &console_input->obj;
1252     }
1253
1254     if (name->len == sizeof(outputW) && !memcmp( name->str, outputW, name->len ))
1255     {
1256         struct console_output *console_output;
1257         name->len = 0;
1258         if (!(console_output = alloc_object( &console_output_ops ))) return NULL;
1259         console_output->fd = alloc_pseudo_fd( &console_output_fd_ops, &console_output->obj,
1260                                              FILE_SYNCHRONOUS_IO_NONALERT );
1261         if (!console_output->fd)
1262         {
1263             release_object( console_output );
1264             return NULL;
1265         }
1266         return &console_output->obj;
1267     }
1268
1269     if (name->len == sizeof(screen_bufferW) && !memcmp( name->str, screen_bufferW, name->len ))
1270     {
1271         if (!current->process->console)
1272         {
1273             set_error( STATUS_INVALID_HANDLE );
1274             return NULL;
1275         }
1276         name->len = 0;
1277         return create_screen_buffer( current->process->console );
1278     }
1279
1280     if (name->len == sizeof(serverW) && !memcmp( name->str, serverW, name->len ))
1281     {
1282         name->len = 0;
1283         return create_console_server();
1284     }
1285
1286     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
1287     {
1288         name->len = 0;
1289         return create_console_connection( NULL );
1290     }
1291
1292     return NULL;
1293 }
1294
1295 static struct object *console_device_open_file( struct object *obj, unsigned int access,
1296                                                 unsigned int sharing, unsigned int options )
1297 {
1298     int is_output;
1299     access = default_map_access( obj, access );
1300     is_output = access & FILE_WRITE_DATA;
1301     if (!current->process->console || (is_output && !current->process->console))
1302     {
1303         set_error( STATUS_INVALID_HANDLE );
1304         return NULL;
1305     }
1306     if (is_output && (access & FILE_READ_DATA))
1307     {
1308         set_error( STATUS_INVALID_PARAMETER );
1309         return NULL;
1310     }
1311     return is_output ? grab_object( current->process->console->active ) : grab_object( current->process->console );
1312 }
1313
1314 static void console_input_dump( struct object *obj, int verbose )
1315 {
1316     fputs( "console Input device\n", stderr );
1317 }
1318
1319 static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry )
1320 {
1321     if (!current->process->console)
1322     {
1323         set_error( STATUS_ACCESS_DENIED );
1324         return 0;
1325     }
1326     return add_queue( &current->process->console->obj, entry );
1327 }
1328
1329 static struct fd *console_input_get_fd( struct object *obj )
1330 {
1331     struct console_input *console_input = (struct console_input *)obj;
1332     assert( obj->ops == &console_input_ops );
1333     return (struct fd *)grab_object( console_input->fd );
1334 }
1335
1336 static struct object *console_input_open_file( struct object *obj, unsigned int access,
1337                                                unsigned int sharing, unsigned int options )
1338 {
1339     return grab_object( obj );
1340 }
1341
1342 static void console_input_destroy( struct object *obj )
1343 {
1344     struct console_input *console_input = (struct console_input *)obj;
1345
1346     assert( obj->ops == &console_input_ops );
1347     if (console_input->fd) release_object( console_input->fd );
1348 }
1349
1350 static int console_input_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1351 {
1352     struct console *console = current->process->console;
1353
1354     if (!console)
1355     {
1356         set_error( STATUS_INVALID_HANDLE );
1357         return 0;
1358     }
1359     return console_ioctl( console->fd, code, async );
1360 }
1361
1362 static int console_input_read( struct fd *fd, struct async *async, file_pos_t pos )
1363 {
1364     struct console *console = current->process->console;
1365
1366     if (!console)
1367     {
1368         set_error( STATUS_INVALID_HANDLE );
1369         return 0;
1370     }
1371     return console_read( console->fd, async, pos );
1372 }
1373
1374 static int console_input_flush( struct fd *fd, struct async *async )
1375 {
1376     struct console *console = current->process->console;
1377
1378     if (!console)
1379     {
1380         set_error( STATUS_INVALID_HANDLE );
1381         return 0;
1382     }
1383     return console_flush( console->fd, async );
1384 }
1385
1386 static void console_output_dump( struct object *obj, int verbose )
1387 {
1388     fputs( "console Output device\n", stderr );
1389 }
1390
1391 static int console_output_add_queue( struct object *obj, struct wait_queue_entry *entry )
1392 {
1393     if (!current->process->console || !current->process->console->active)
1394     {
1395         set_error( STATUS_ACCESS_DENIED );
1396         return 0;
1397     }
1398     return add_queue( &current->process->console->obj, entry );
1399 }
1400
1401 static struct fd *console_output_get_fd( struct object *obj )
1402 {
1403     struct console_output *console_output = (struct console_output *)obj;
1404     assert( obj->ops == &console_output_ops );
1405     return (struct fd *)grab_object( console_output->fd );
1406 }
1407
1408 static struct object *console_output_open_file( struct object *obj, unsigned int access,
1409                                                 unsigned int sharing, unsigned int options )
1410 {
1411     return grab_object( obj );
1412 }
1413
1414 static void console_output_destroy( struct object *obj )
1415 {
1416     struct console_output *console_output = (struct console_output *)obj;
1417
1418     assert( obj->ops == &console_output_ops );
1419     if (console_output->fd) release_object( console_output->fd );
1420 }
1421
1422 static int console_output_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1423 {
1424     struct console *console = current->process->console;
1425
1426     if (!console || !console->active)
1427     {
1428         set_error( STATUS_INVALID_HANDLE );
1429         return 0;
1430     }
1431     return screen_buffer_ioctl( console->active->fd, code, async );
1432 }
1433
1434 static int console_output_write( struct fd *fd, struct async *async, file_pos_t pos )
1435 {
1436     struct console *console = current->process->console;
1437
1438     if (!console || !console->active)
1439     {
1440         set_error( STATUS_INVALID_HANDLE );
1441         return 0;
1442     }
1443     return screen_buffer_write( console->active->fd, async, pos );
1444 }
1445
1446 struct object *create_console_device( struct object *root, const struct unicode_str *name,
1447                                       unsigned int attr, const struct security_descriptor *sd )
1448 {
1449     return create_named_object( root, &console_device_ops, name, attr, sd );
1450 }
1451
1452 /* retrieve the next pending console ioctl request */
1453 DECL_HANDLER(get_next_console_request)
1454 {
1455     struct console_host_ioctl *ioctl = NULL, *next;
1456     struct console_server *server;
1457     struct iosb *iosb = NULL;
1458
1459     server = (struct console_server *)get_handle_obj( current->process, req->handle, 0, &console_server_ops );
1460     if (!server) return;
1461
1462     if (!server->console)
1463     {
1464         set_error( STATUS_INVALID_HANDLE );
1465         release_object( server );
1466         return;
1467     }
1468
1469     if (!server->console->renderer) server->console->renderer = current;
1470
1471     if (!req->signal) server->console->signaled = 0;
1472     else if (!server->console->signaled)
1473     {
1474         server->console->signaled = 1;
1475         wake_up( &server->console->obj, 0 );
1476     }
1477
1478     if (req->read)
1479     {
1480         /* set result of current pending ioctl */
1481         if (list_empty( &server->read_queue ))
1482         {
1483             set_error( STATUS_INVALID_HANDLE );
1484             release_object( server );
1485             return;
1486         }
1487
1488         ioctl = LIST_ENTRY( list_head( &server->read_queue ), struct console_host_ioctl, entry );
1489         list_remove( &ioctl->entry );
1490         list_move_tail( &server->queue, &server->read_queue );
1491     }
1492     else if (server->busy)
1493     {
1494         /* set result of previous ioctl */
1495         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1496         list_remove( &ioctl->entry );
1497     }
1498
1499     if (ioctl)
1500     {
1501         unsigned int status = req->status;
1502         if (status == STATUS_PENDING) status = STATUS_INVALID_PARAMETER;
1503         if (ioctl->async)
1504         {
1505             iosb = async_get_iosb( ioctl->async );
1506             if (iosb->status == STATUS_PENDING)
1507             {
1508                 iosb->status = status;
1509                 iosb->out_size = min( iosb->out_size, get_req_data_size() );
1510                 if (iosb->out_size)
1511                 {
1512                     if ((iosb->out_data = memdup( get_req_data(), iosb->out_size )))
1513                     {
1514                         iosb->result = iosb->out_size;
1515                     }
1516                     else if (!status)
1517                     {
1518                         iosb->status = STATUS_NO_MEMORY;
1519                         iosb->out_size = 0;
1520                     }
1521                 }
1522                 if (iosb->result) status = STATUS_ALERTED;
1523             }
1524             else
1525             {
1526                 release_object( ioctl->async );
1527                 ioctl->async = NULL;
1528             }
1529         }
1530         console_host_ioctl_terminate( ioctl, status );
1531         if (iosb) release_object( iosb );
1532
1533         if (req->read)
1534         {
1535             release_object( server );
1536             return;
1537         }
1538         server->busy = 0;
1539     }
1540
1541     /* if we have a blocking read ioctl in queue head and previous blocking read is still waiting,
1542      * move it to read queue for execution after current read is complete. move all blocking
1543      * ioctl at the same time to preserve their order. */
1544     if (!list_empty( &server->queue ) && !list_empty( &server->read_queue ))
1545     {
1546         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1547         if (is_blocking_read_ioctl( ioctl->code ))
1548         {
1549             LIST_FOR_EACH_ENTRY_SAFE( ioctl, next, &server->queue, struct console_host_ioctl, entry )
1550             {
1551                 if (!is_blocking_read_ioctl( ioctl->code )) continue;
1552                 list_remove( &ioctl->entry );
1553                 list_add_tail( &server->read_queue, &ioctl->entry );
1554             }
1555         }
1556     }
1557
1558     /* return the next ioctl */
1559     if (!list_empty( &server->queue ))
1560     {
1561         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1562         iosb = ioctl->async ? async_get_iosb( ioctl->async ) : NULL;
1563
1564         if (!iosb || get_reply_max_size() >= iosb->in_size)
1565         {
1566             reply->code   = ioctl->code;
1567             reply->output = ioctl->output;
1568
1569             if (iosb)
1570             {
1571                 reply->out_size = iosb->out_size;
1572                 set_reply_data_ptr( iosb->in_data, iosb->in_size );
1573                 iosb->in_data = NULL;
1574             }
1575
1576             if (is_blocking_read_ioctl( ioctl->code ))
1577             {
1578                 list_remove( &ioctl->entry );
1579                 assert( list_empty( &server->read_queue ));
1580                 list_add_tail( &server->read_queue, &ioctl->entry );
1581             }
1582             else server->busy = 1;
1583         }
1584         else
1585         {
1586             reply->out_size = iosb->in_size;
1587             set_error( STATUS_BUFFER_OVERFLOW );
1588         }
1589         if (iosb) release_object( iosb );
1590     }
1591     else
1592     {
1593         set_error( STATUS_PENDING );
1594     }
1595
1596     release_object( server );
1597 }