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     fd_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 && process->running_threads &&
 653         (!csi->group || process->group_id == csi->group))
 654     {
 655         /* find a suitable thread to signal */
 656         struct thread *thread;
 657         LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
 658         {
 659             if (send_thread_signal( thread, csi->signal )) break;
 660         }
 661     }
 662     return FALSE;
 663 }
 664
 665 static void propagate_console_signal( struct console *console,
 666                                       int sig, process_id_t group_id )
 667 {
 668     struct console_signal_info csi;
 669
 670     if (!console)
 671     {
 672         set_error( STATUS_INVALID_PARAMETER );
 673         return;
 674     }
 675     /* FIXME: should support the other events (like CTRL_BREAK) */
 676     if (sig != CTRL_C_EVENT)
 677     {
 678         set_error( STATUS_NOT_IMPLEMENTED );
 679         return;
 680     }
 681     csi.console = console;
 682     csi.signal  = SIGINT;
 683     csi.group   = group_id;
 684
 685     enum_processes(propagate_console_signal_cb, &csi);
 686 }
 687
 688 /* dumb dump */
 689 static void console_dump( struct object *obj, int verbose )
 690 {
 691     struct console *console = (struct console *)obj;
 692     assert( obj->ops == &console_ops );
 693     fprintf( stderr, "Console input active=%p server=%p\n",
 694              console->active, console->server );
 695 }
 696
 697 static void console_destroy( struct object *obj )
 698 {
 699     struct console *console = (struct console *)obj;
 700     struct screen_buffer *curr;
 701
 702     assert( obj->ops == &console_ops );
 703
 704     if (console->server)
 705     {
 706         assert( console->server->console == console );
 707         disconnect_console_server( console->server );
 708     }
 709
 710     if (console->active) release_object( console->active );
 711     console->active = NULL;
 712
 713     LIST_FOR_EACH_ENTRY( curr, &screen_buffer_list, struct screen_buffer, entry )
 714     {
 715         if (curr->input == console) curr->input = NULL;
 716     }
 717
 718     free_async_queue( &console->ioctl_q );
 719     free_async_queue( &console->read_q );
 720     if (console->fd)
 721         release_object( console->fd );
 722 }
 723
 724 static struct object *create_console_connection( struct console *console )
 725 {
 726     struct console_connection *connection;
 727
 728     if (current->process->console)
 729     {
 730         set_error( STATUS_ACCESS_DENIED );
 731         return NULL;
 732     }
 733
 734     if (!(connection = alloc_object( &console_connection_ops ))) return NULL;
 735     if (!(connection->fd = alloc_pseudo_fd( &console_connection_fd_ops, &connection->obj, 0 )))
 736     {
 737         release_object( connection );
 738         return NULL;
 739     }
 740
 741     if (console)
 742         current->process->console = (struct console *)grab_object( console );
 743
 744     return &connection->obj;
 745 }
 746
 747 static struct object *console_lookup_name( struct object *obj, struct unicode_str *name,
 748                                            unsigned int attr, struct object *root )
 749 {
 750     struct console *console = (struct console *)obj;
 751     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
 752     assert( obj->ops == &console_ops );
 753
 754     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
 755     {
 756         name->len = 0;
 757         return create_console_connection( console );
 758     }
 759
 760     return NULL;
 761 }
 762
 763 static struct object *console_open_file( struct object *obj, unsigned int access,
 764                                                unsigned int sharing, unsigned int options )
 765 {
 766     return grab_object( obj );
 767 }
 768
 769 static void screen_buffer_dump( struct object *obj, int verbose )
 770 {
 771     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 772     assert( obj->ops == &screen_buffer_ops );
 773
 774     fprintf(stderr, "Console screen buffer input=%p\n", screen_buffer->input );
 775 }
 776
 777 static void screen_buffer_destroy( struct object *obj )
 778 {
 779     struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
 780
 781     assert( obj->ops == &screen_buffer_ops );
 782
 783     list_remove( &screen_buffer->entry );
 784     if (screen_buffer->input && screen_buffer->input->server)
 785         queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_CLOSE_OUTPUT,
 786                           screen_buffer->id, NULL, NULL );
 787     if (screen_buffer->fd) release_object( screen_buffer->fd );
 788     free_async_queue( &screen_buffer->ioctl_q );
 789 }
 790
 791 static struct object *screen_buffer_open_file( struct object *obj, unsigned int access,
 792                                                unsigned int sharing, unsigned int options )
 793 {
 794     return grab_object( obj );
 795 }
 796
 797 static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry )
 798 {
 799     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 800     if (!screen_buffer->input)
 801     {
 802         set_error( STATUS_ACCESS_DENIED );
 803         return 0;
 804     }
 805     return add_queue( &screen_buffer->input->obj, entry );
 806 }
 807
 808 static struct fd *screen_buffer_get_fd( struct object *obj )
 809 {
 810     struct screen_buffer *screen_buffer = (struct screen_buffer*)obj;
 811     assert( obj->ops == &screen_buffer_ops );
 812     if (screen_buffer->fd)
 813         return (struct fd*)grab_object( screen_buffer->fd );
 814     set_error( STATUS_OBJECT_TYPE_MISMATCH );
 815     return NULL;
 816 }
 817
 818 static void console_server_dump( struct object *obj, int verbose )
 819 {
 820     assert( obj->ops == &console_server_ops );
 821     fprintf( stderr, "Console server\n" );
 822 }
 823
 824 static void console_server_destroy( struct object *obj )
 825 {
 826     struct console_server *server = (struct console_server *)obj;
 827     assert( obj->ops == &console_server_ops );
 828     disconnect_console_server( server );
 829     if (server->fd) release_object( server->fd );
 830 }
 831
 832 static struct object *console_server_lookup_name( struct object *obj, struct unicode_str *name,
 833                                                   unsigned int attr, struct object *root )
 834 {
 835     struct console_server *server = (struct console_server*)obj;
 836     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
 837     assert( obj->ops == &console_server_ops );
 838
 839     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
 840     {
 841         struct screen_buffer *screen_buffer;
 842         name->len = 0;
 843         if (server->console)
 844         {
 845             set_error( STATUS_INVALID_HANDLE );
 846             return 0;
 847         }
 848         if (!(server->console = (struct console *)create_console())) return NULL;
 849         if (!(screen_buffer = (struct screen_buffer *)create_screen_buffer( server->console )))
 850         {
 851             release_object( server->console );
 852             server->console = NULL;
 853             return NULL;
 854         }
 855         release_object( screen_buffer );
 856         server->console->server = server;
 857
 858         return &server->console->obj;
 859     }
 860
 861     return NULL;
 862 }
 863
 864 static int console_server_signaled( struct object *obj, struct wait_queue_entry *entry )
 865 {
 866     struct console_server *server = (struct console_server*)obj;
 867     assert( obj->ops == &console_server_ops );
 868     return !server->console || !list_empty( &server->queue );
 869 }
 870
 871 static struct fd *console_server_get_fd( struct object* obj )
 872 {
 873     struct console_server *server = (struct console_server*)obj;
 874     assert( obj->ops == &console_server_ops );
 875     return (struct fd *)grab_object( server->fd );
 876 }
 877
 878 static struct object *console_server_open_file( struct object *obj, unsigned int access,
 879                                                 unsigned int sharing, unsigned int options )
 880 {
 881     return grab_object( obj );
 882 }
 883
 884 static struct object *create_console_server( void )
 885 {
 886     struct console_server *server;
 887
 888     if (!(server = alloc_object( &console_server_ops ))) return NULL;
 889     server->console = NULL;
 890     server->busy    = 0;
 891     server->term_fd = -1;
 892     list_init( &server->queue );
 893     list_init( &server->read_queue );
 894     server->fd = alloc_pseudo_fd( &console_server_fd_ops, &server->obj, FILE_SYNCHRONOUS_IO_NONALERT );
 895     if (!server->fd)
 896     {
 897         release_object( server );
 898         return NULL;
 899     }
 900     allow_fd_caching(server->fd);
 901
 902     return &server->obj;
 903 }
 904
 905 static int is_blocking_read_ioctl( unsigned int code )
 906 {
 907     switch (code)
 908     {
 909     case IOCTL_CONDRV_READ_INPUT:
 910     case IOCTL_CONDRV_READ_CONSOLE:
 911     case IOCTL_CONDRV_READ_FILE:
 912         return 1;
 913     default:
 914         return 0;
 915     }
 916 }
 917
 918 static int console_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
 919 {
 920     struct console *console = get_fd_user( fd );
 921
 922     switch (code)
 923     {
 924     case IOCTL_CONDRV_CTRL_EVENT:
 925         {
 926             const struct condrv_ctrl_event *event = get_req_data();
 927             process_id_t group;
 928             if (get_req_data_size() != sizeof(*event))
 929             {
 930                 set_error( STATUS_INVALID_PARAMETER );
 931                 return 0;
 932             }
 933             group = event->group_id ? event->group_id : current->process->group_id;
 934             if (!group)
 935             {
 936                 set_error( STATUS_INVALID_PARAMETER );
 937                 return 0;
 938             }
 939             propagate_console_signal( console, event->event, group );
 940             return !get_error();
 941         }
 942
 943     default:
 944         if (!console->server || code >> 16 != FILE_DEVICE_CONSOLE)
 945         {
 946             set_error( STATUS_INVALID_HANDLE );
 947             return 0;
 948         }
 949         return queue_host_ioctl( console->server, code, 0, async, &console->ioctl_q );
 950     }
 951 }
 952
 953 static int console_read( struct fd *fd, struct async *async, file_pos_t pos )
 954 {
 955     struct console *console = get_fd_user( fd );
 956
 957     if (!console->server)
 958     {
 959         set_error( STATUS_INVALID_HANDLE );
 960         return 0;
 961     }
 962     return queue_host_ioctl( console->server, IOCTL_CONDRV_READ_FILE, 0, async, &console->ioctl_q );
 963 }
 964
 965 static int console_flush( struct fd *fd, struct async *async )
 966 {
 967     struct console *console = get_fd_user( fd );
 968
 969     if (!console->server)
 970     {
 971         set_error( STATUS_INVALID_HANDLE );
 972         return 0;
 973     }
 974     return queue_host_ioctl( console->server, IOCTL_CONDRV_FLUSH, 0, NULL, NULL );
 975 }
 976
 977 static int screen_buffer_write( struct fd *fd, struct async *async, file_pos_t pos )
 978 {
 979     struct screen_buffer *screen_buffer = get_fd_user( fd );
 980     struct iosb *iosb;
 981
 982     if (!screen_buffer->input || !screen_buffer->input->server)
 983     {
 984         set_error( STATUS_INVALID_HANDLE );
 985         return 0;
 986     }
 987
 988     if (!queue_host_ioctl( screen_buffer->input->server, IOCTL_CONDRV_WRITE_FILE,
 989                            screen_buffer->id, async, &screen_buffer->ioctl_q ))
 990         return 0;
 991
 992     /* we can't use default async handling, because write result is not
 993      * compatible with ioctl result */
 994     iosb = async_get_iosb( async );
 995     iosb->result = iosb->in_size;
 996     release_object( iosb );
 997     return 1;
 998 }
 999
1000 static int screen_buffer_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1001 {
1002     struct screen_buffer *screen_buffer = get_fd_user( fd );
1003
1004     switch (code)
1005     {
1006     case IOCTL_CONDRV_ACTIVATE:
1007         if (!screen_buffer->input)
1008         {
1009             set_error( STATUS_INVALID_HANDLE );
1010             return 0;
1011         }
1012
1013         set_active_screen_buffer( screen_buffer->input, screen_buffer );
1014         return 1;
1015
1016     default:
1017         if (!screen_buffer->input || !screen_buffer->input->server || code >> 16 != FILE_DEVICE_CONSOLE ||
1018             is_blocking_read_ioctl( code ))
1019         {
1020             set_error( STATUS_INVALID_HANDLE );
1021             return 0;
1022         }
1023         return queue_host_ioctl( screen_buffer->input->server, code, screen_buffer->id,
1024                                  async, &screen_buffer->ioctl_q );
1025     }
1026 }
1027
1028 static int console_connection_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1029 {
1030     struct console_connection *console_connection = get_fd_user( fd );
1031
1032     switch (code)
1033     {
1034     case IOCTL_CONDRV_BIND_PID:
1035         {
1036             struct process *process;
1037             unsigned int pid;
1038             if (get_req_data_size() != sizeof(unsigned int))
1039             {
1040                 set_error( STATUS_INVALID_PARAMETER );
1041                 return 0;
1042             }
1043             if (current->process->console)
1044             {
1045                 set_error( STATUS_INVALID_HANDLE );
1046                 return 0;
1047             }
1048
1049             pid = *(unsigned int *)get_req_data();
1050             if (pid == ATTACH_PARENT_PROCESS) pid = current->process->parent_id;
1051             if (!(process = get_process_from_id( pid ))) return 0;
1052
1053             if (process->console)
1054                 current->process->console = (struct console *)grab_object( process->console );
1055             else set_error( STATUS_ACCESS_DENIED );
1056             release_object( process );
1057             return !get_error();
1058         }
1059
1060     default:
1061         return default_fd_ioctl( console_connection->fd, code, async );
1062     }
1063 }
1064
1065 static int console_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1066 {
1067     struct console_server *server = get_fd_user( fd );
1068
1069     switch (code)
1070     {
1071     case IOCTL_CONDRV_CTRL_EVENT:
1072         {
1073             const struct condrv_ctrl_event *event = get_req_data();
1074             if (get_req_data_size() != sizeof(*event))
1075             {
1076                 set_error( STATUS_INVALID_PARAMETER );
1077                 return 0;
1078             }
1079             if (!server->console)
1080             {
1081                 set_error( STATUS_INVALID_HANDLE );
1082                 return 0;
1083             }
1084             propagate_console_signal( server->console, event->event, event->group_id );
1085             return !get_error();
1086         }
1087
1088     case IOCTL_CONDRV_SETUP_INPUT:
1089         {
1090             struct termios term;
1091             obj_handle_t handle;
1092             struct file *file;
1093             int unix_fd;
1094
1095             if (get_req_data_size() != sizeof(unsigned int) || get_reply_max_size())
1096             {
1097                 set_error( STATUS_INVALID_PARAMETER );
1098                 return 0;
1099             }
1100             if (server->term_fd != -1)
1101             {
1102                 tcsetattr( server->term_fd, TCSANOW, &server->termios );
1103                 close( server->term_fd );
1104                 server->term_fd = -1;
1105             }
1106             handle = *(unsigned int *)get_req_data();
1107             if (!handle) return 1;
1108             if (!(file = get_file_obj( current->process, handle, FILE_READ_DATA  )))
1109             {
1110                 return 0;
1111             }
1112             unix_fd = get_file_unix_fd( file );
1113             release_object( file );
1114
1115             if (tcgetattr( unix_fd, &server->termios ))
1116             {
1117                 file_set_error();
1118                 return 0;
1119             }
1120             term = server->termios;
1121             term.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
1122             term.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
1123             term.c_cflag &= ~(CSIZE | PARENB);
1124             term.c_cflag |= CS8;
1125             term.c_cc[VMIN] = 1;
1126             term.c_cc[VTIME] = 0;
1127             if (tcsetattr( unix_fd, TCSANOW, &term ) || (server->term_fd = dup( unix_fd )) == -1)
1128             {
1129                 file_set_error();
1130                 return 0;
1131             }
1132             return 1;
1133         }
1134
1135     default:
1136         set_error( STATUS_INVALID_HANDLE );
1137         return 0;
1138     }
1139 }
1140
1141 static void console_connection_dump( struct object *obj, int verbose )
1142 {
1143     fputs( "console connection\n", stderr );
1144 }
1145
1146 static struct fd *console_connection_get_fd( struct object *obj )
1147 {
1148     struct console_connection *connection = (struct console_connection *)obj;
1149     return (struct fd *)grab_object( connection->fd );
1150 }
1151
1152 static struct object *console_connection_lookup_name( struct object *obj, struct unicode_str *name,
1153                                                       unsigned int attr, struct object *root )
1154 {
1155     static const WCHAR referenceW[] = {'R','e','f','e','r','e','n','c','e'};
1156
1157     if (name->len == sizeof(referenceW) && !memcmp( name->str, referenceW, name->len ))
1158     {
1159         if (!current->process->console)
1160         {
1161             set_error( STATUS_INVALID_HANDLE );
1162             return NULL;
1163         }
1164         name->len = 0;
1165         return grab_object( current->process->console );
1166     }
1167
1168     return NULL;
1169 }
1170
1171 static struct object *console_connection_open_file( struct object *obj, unsigned int access,
1172                                                     unsigned int sharing, unsigned int options )
1173 {
1174     return grab_object( obj );
1175 }
1176
1177 static int console_connection_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1178 {
1179     struct console *console = process->console;
1180
1181     if (console)
1182     {
1183         process->console = NULL;
1184         release_object( console );
1185     }
1186     return 1;
1187 }
1188
1189 static void console_connection_destroy( struct object *obj )
1190 {
1191     struct console_connection *connection = (struct console_connection *)obj;
1192     if (connection->fd) release_object( connection->fd );
1193 }
1194
1195 static void console_device_dump( struct object *obj, int verbose )
1196 {
1197     fputs( "Console device\n", stderr );
1198 }
1199
1200 static struct object *console_device_lookup_name( struct object *obj, struct unicode_str *name,
1201                                                   unsigned int attr, struct object *root )
1202 {
1203     static const WCHAR connectionW[]    = {'C','o','n','n','e','c','t','i','o','n'};
1204     static const WCHAR consoleW[]       = {'C','o','n','s','o','l','e'};
1205     static const WCHAR current_inW[]    = {'C','u','r','r','e','n','t','I','n'};
1206     static const WCHAR current_outW[]   = {'C','u','r','r','e','n','t','O','u','t'};
1207     static const WCHAR inputW[]         = {'I','n','p','u','t'};
1208     static const WCHAR outputW[]        = {'O','u','t','p','u','t'};
1209     static const WCHAR screen_bufferW[] = {'S','c','r','e','e','n','B','u','f','f','e','r'};
1210     static const WCHAR serverW[]        = {'S','e','r','v','e','r'};
1211
1212     if (name->len == sizeof(current_inW) && !memcmp( name->str, current_inW, name->len ))
1213     {
1214         if (!current->process->console)
1215         {
1216             set_error( STATUS_INVALID_HANDLE );
1217             return NULL;
1218         }
1219         name->len = 0;
1220         return grab_object( current->process->console );
1221     }
1222
1223     if (name->len == sizeof(current_outW) && !memcmp( name->str, current_outW, name->len ))
1224     {
1225         if (!current->process->console || !current->process->console->active)
1226         {
1227             set_error( STATUS_INVALID_HANDLE );
1228             return NULL;
1229         }
1230         name->len = 0;
1231         return grab_object( current->process->console->active );
1232     }
1233
1234     if (name->len == sizeof(consoleW) && !memcmp( name->str, consoleW, name->len ))
1235     {
1236         name->len = 0;
1237         return grab_object( obj );
1238     }
1239
1240     if (name->len == sizeof(inputW) && !memcmp( name->str, inputW, name->len ))
1241     {
1242         struct console_input *console_input;
1243         name->len = 0;
1244         if (!(console_input = alloc_object( &console_input_ops ))) return NULL;
1245         console_input->fd = alloc_pseudo_fd( &console_input_fd_ops, &console_input->obj,
1246                                              FILE_SYNCHRONOUS_IO_NONALERT );
1247         if (!console_input->fd)
1248         {
1249             release_object( console_input );
1250             return NULL;
1251         }
1252         return &console_input->obj;
1253     }
1254
1255     if (name->len == sizeof(outputW) && !memcmp( name->str, outputW, name->len ))
1256     {
1257         struct console_output *console_output;
1258         name->len = 0;
1259         if (!(console_output = alloc_object( &console_output_ops ))) return NULL;
1260         console_output->fd = alloc_pseudo_fd( &console_output_fd_ops, &console_output->obj,
1261                                              FILE_SYNCHRONOUS_IO_NONALERT );
1262         if (!console_output->fd)
1263         {
1264             release_object( console_output );
1265             return NULL;
1266         }
1267         return &console_output->obj;
1268     }
1269
1270     if (name->len == sizeof(screen_bufferW) && !memcmp( name->str, screen_bufferW, name->len ))
1271     {
1272         if (!current->process->console)
1273         {
1274             set_error( STATUS_INVALID_HANDLE );
1275             return NULL;
1276         }
1277         name->len = 0;
1278         return create_screen_buffer( current->process->console );
1279     }
1280
1281     if (name->len == sizeof(serverW) && !memcmp( name->str, serverW, name->len ))
1282     {
1283         name->len = 0;
1284         return create_console_server();
1285     }
1286
1287     if (name->len == sizeof(connectionW) && !memcmp( name->str, connectionW, name->len ))
1288     {
1289         name->len = 0;
1290         return create_console_connection( NULL );
1291     }
1292
1293     return NULL;
1294 }
1295
1296 static struct object *console_device_open_file( struct object *obj, unsigned int access,
1297                                                 unsigned int sharing, unsigned int options )
1298 {
1299     int is_output;
1300     access = default_map_access( obj, access );
1301     is_output = access & FILE_WRITE_DATA;
1302     if (!current->process->console || (is_output && !current->process->console))
1303     {
1304         set_error( STATUS_INVALID_HANDLE );
1305         return NULL;
1306     }
1307     if (is_output && (access & FILE_READ_DATA))
1308     {
1309         set_error( STATUS_INVALID_PARAMETER );
1310         return NULL;
1311     }
1312     return is_output ? grab_object( current->process->console->active ) : grab_object( current->process->console );
1313 }
1314
1315 static void console_input_dump( struct object *obj, int verbose )
1316 {
1317     fputs( "console Input device\n", stderr );
1318 }
1319
1320 static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry )
1321 {
1322     if (!current->process->console)
1323     {
1324         set_error( STATUS_ACCESS_DENIED );
1325         return 0;
1326     }
1327     return add_queue( &current->process->console->obj, entry );
1328 }
1329
1330 static struct fd *console_input_get_fd( struct object *obj )
1331 {
1332     struct console_input *console_input = (struct console_input *)obj;
1333     assert( obj->ops == &console_input_ops );
1334     return (struct fd *)grab_object( console_input->fd );
1335 }
1336
1337 static struct object *console_input_open_file( struct object *obj, unsigned int access,
1338                                                unsigned int sharing, unsigned int options )
1339 {
1340     return grab_object( obj );
1341 }
1342
1343 static void console_input_destroy( struct object *obj )
1344 {
1345     struct console_input *console_input = (struct console_input *)obj;
1346
1347     assert( obj->ops == &console_input_ops );
1348     if (console_input->fd) release_object( console_input->fd );
1349 }
1350
1351 static int console_input_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1352 {
1353     struct console *console = current->process->console;
1354
1355     if (!console)
1356     {
1357         set_error( STATUS_INVALID_HANDLE );
1358         return 0;
1359     }
1360     return console_ioctl( console->fd, code, async );
1361 }
1362
1363 static int console_input_read( struct fd *fd, struct async *async, file_pos_t pos )
1364 {
1365     struct console *console = current->process->console;
1366
1367     if (!console)
1368     {
1369         set_error( STATUS_INVALID_HANDLE );
1370         return 0;
1371     }
1372     return console_read( console->fd, async, pos );
1373 }
1374
1375 static int console_input_flush( struct fd *fd, struct async *async )
1376 {
1377     struct console *console = current->process->console;
1378
1379     if (!console)
1380     {
1381         set_error( STATUS_INVALID_HANDLE );
1382         return 0;
1383     }
1384     return console_flush( console->fd, async );
1385 }
1386
1387 static void console_output_dump( struct object *obj, int verbose )
1388 {
1389     fputs( "console Output device\n", stderr );
1390 }
1391
1392 static int console_output_add_queue( struct object *obj, struct wait_queue_entry *entry )
1393 {
1394     if (!current->process->console || !current->process->console->active)
1395     {
1396         set_error( STATUS_ACCESS_DENIED );
1397         return 0;
1398     }
1399     return add_queue( &current->process->console->obj, entry );
1400 }
1401
1402 static struct fd *console_output_get_fd( struct object *obj )
1403 {
1404     struct console_output *console_output = (struct console_output *)obj;
1405     assert( obj->ops == &console_output_ops );
1406     return (struct fd *)grab_object( console_output->fd );
1407 }
1408
1409 static struct object *console_output_open_file( struct object *obj, unsigned int access,
1410                                                 unsigned int sharing, unsigned int options )
1411 {
1412     return grab_object( obj );
1413 }
1414
1415 static void console_output_destroy( struct object *obj )
1416 {
1417     struct console_output *console_output = (struct console_output *)obj;
1418
1419     assert( obj->ops == &console_output_ops );
1420     if (console_output->fd) release_object( console_output->fd );
1421 }
1422
1423 static int console_output_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
1424 {
1425     struct console *console = current->process->console;
1426
1427     if (!console || !console->active)
1428     {
1429         set_error( STATUS_INVALID_HANDLE );
1430         return 0;
1431     }
1432     return screen_buffer_ioctl( console->active->fd, code, async );
1433 }
1434
1435 static int console_output_write( struct fd *fd, struct async *async, file_pos_t pos )
1436 {
1437     struct console *console = current->process->console;
1438
1439     if (!console || !console->active)
1440     {
1441         set_error( STATUS_INVALID_HANDLE );
1442         return 0;
1443     }
1444     return screen_buffer_write( console->active->fd, async, pos );
1445 }
1446
1447 struct object *create_console_device( struct object *root, const struct unicode_str *name,
1448                                       unsigned int attr, const struct security_descriptor *sd )
1449 {
1450     return create_named_object( root, &console_device_ops, name, attr, sd );
1451 }
1452
1453 /* retrieve the next pending console ioctl request */
1454 DECL_HANDLER(get_next_console_request)
1455 {
1456     struct console_host_ioctl *ioctl = NULL, *next;
1457     struct console_server *server;
1458     struct iosb *iosb = NULL;
1459
1460     server = (struct console_server *)get_handle_obj( current->process, req->handle, 0, &console_server_ops );
1461     if (!server) return;
1462
1463     if (!server->console)
1464     {
1465         set_error( STATUS_INVALID_HANDLE );
1466         release_object( server );
1467         return;
1468     }
1469
1470     if (!server->console->renderer) server->console->renderer = current;
1471
1472     if (!req->signal) server->console->signaled = 0;
1473     else if (!server->console->signaled)
1474     {
1475         server->console->signaled = 1;
1476         wake_up( &server->console->obj, 0 );
1477     }
1478
1479     if (req->read)
1480     {
1481         /* set result of current pending ioctl */
1482         if (list_empty( &server->read_queue ))
1483         {
1484             set_error( STATUS_INVALID_HANDLE );
1485             release_object( server );
1486             return;
1487         }
1488
1489         ioctl = LIST_ENTRY( list_head( &server->read_queue ), struct console_host_ioctl, entry );
1490         list_remove( &ioctl->entry );
1491         list_move_tail( &server->queue, &server->read_queue );
1492     }
1493     else if (server->busy)
1494     {
1495         /* set result of previous ioctl */
1496         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1497         list_remove( &ioctl->entry );
1498     }
1499
1500     if (ioctl)
1501     {
1502         unsigned int status = req->status;
1503         if (status == STATUS_PENDING) status = STATUS_INVALID_PARAMETER;
1504         if (ioctl->async)
1505         {
1506             iosb = async_get_iosb( ioctl->async );
1507             if (iosb->status == STATUS_PENDING)
1508             {
1509                 iosb->status = status;
1510                 iosb->out_size = min( iosb->out_size, get_req_data_size() );
1511                 if (iosb->out_size)
1512                 {
1513                     if ((iosb->out_data = memdup( get_req_data(), iosb->out_size )))
1514                     {
1515                         iosb->result = iosb->out_size;
1516                     }
1517                     else if (!status)
1518                     {
1519                         iosb->status = STATUS_NO_MEMORY;
1520                         iosb->out_size = 0;
1521                     }
1522                 }
1523                 if (iosb->result) status = STATUS_ALERTED;
1524             }
1525             else
1526             {
1527                 release_object( ioctl->async );
1528                 ioctl->async = NULL;
1529             }
1530         }
1531         console_host_ioctl_terminate( ioctl, status );
1532         if (iosb) release_object( iosb );
1533
1534         if (req->read)
1535         {
1536             release_object( server );
1537             return;
1538         }
1539         server->busy = 0;
1540     }
1541
1542     /* if we have a blocking read ioctl in queue head and previous blocking read is still waiting,
1543      * move it to read queue for execution after current read is complete. move all blocking
1544      * ioctl at the same time to preserve their order. */
1545     if (!list_empty( &server->queue ) && !list_empty( &server->read_queue ))
1546     {
1547         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1548         if (is_blocking_read_ioctl( ioctl->code ))
1549         {
1550             LIST_FOR_EACH_ENTRY_SAFE( ioctl, next, &server->queue, struct console_host_ioctl, entry )
1551             {
1552                 if (!is_blocking_read_ioctl( ioctl->code )) continue;
1553                 list_remove( &ioctl->entry );
1554                 list_add_tail( &server->read_queue, &ioctl->entry );
1555             }
1556         }
1557     }
1558
1559     /* return the next ioctl */
1560     if (!list_empty( &server->queue ))
1561     {
1562         ioctl = LIST_ENTRY( list_head( &server->queue ), struct console_host_ioctl, entry );
1563         iosb = ioctl->async ? async_get_iosb( ioctl->async ) : NULL;
1564
1565         if (!iosb || get_reply_max_size() >= iosb->in_size)
1566         {
1567             reply->code   = ioctl->code;
1568             reply->output = ioctl->output;
1569
1570             if (iosb)
1571             {
1572                 reply->out_size = iosb->out_size;
1573                 set_reply_data_ptr( iosb->in_data, iosb->in_size );
1574                 iosb->in_data = NULL;
1575             }
1576
1577             if (is_blocking_read_ioctl( ioctl->code ))
1578             {
1579                 list_remove( &ioctl->entry );
1580                 assert( list_empty( &server->read_queue ));
1581                 list_add_tail( &server->read_queue, &ioctl->entry );
1582             }
1583             else server->busy = 1;
1584         }
1585         else
1586         {
1587             reply->out_size = iosb->in_size;
1588             set_error( STATUS_BUFFER_OVERFLOW );
1589         }
1590         if (iosb) release_object( iosb );
1591     }
1592     else
1593     {
1594         set_error( STATUS_PENDING );
1595     }
1596
1597     release_object( server );
1598 }