server/sock.c

   1 /*
   2  * Server-side socket management
   3  *
   4  * Copyright (C) 1999 Marcus Meissner, Ove Kåven
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * FIXME: we use read|write access in all cases. Shouldn't we depend that
  21  * on the access of the current handle?
  22  */
  23
  24 #include "config.h"
  25
  26 #include <assert.h>
  27 #include <fcntl.h>
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <stdlib.h>
  32 #include <errno.h>
  33 #ifdef HAVE_POLL_H
  34 # include <poll.h>
  35 #endif
  36 #include <sys/time.h>
  37 #include <sys/types.h>
  38 #ifdef HAVE_SYS_SOCKET_H
  39 # include <sys/socket.h>
  40 #endif
  41 #ifdef HAVE_SYS_IOCTL_H
  42 #include <sys/ioctl.h>
  43 #endif
  44 #ifdef HAVE_SYS_FILIO_H
  45 # include <sys/filio.h>
  46 #endif
  47 #include <time.h>
  48 #include <unistd.h>
  49 #include <limits.h>
  50 #ifdef HAVE_LINUX_RTNETLINK_H
  51 # include <linux/rtnetlink.h>
  52 #endif
  53
  54 #include "ntstatus.h"
  55 #define WIN32_NO_STATUS
  56 #include "windef.h"
  57 #include "winternl.h"
  58 #include "winerror.h"
  59 #define USE_WS_PREFIX
  60 #include "winsock2.h"
  61
  62 #include "process.h"
  63 #include "file.h"
  64 #include "handle.h"
  65 #include "thread.h"
  66 #include "request.h"
  67 #include "user.h"
  68
  69 /* From winsock.h */
  70 #define FD_MAX_EVENTS              10
  71 #define FD_READ_BIT                0
  72 #define FD_WRITE_BIT               1
  73 #define FD_OOB_BIT                 2
  74 #define FD_ACCEPT_BIT              3
  75 #define FD_CONNECT_BIT             4
  76 #define FD_CLOSE_BIT               5
  77
  78 /*
  79  * Define flags to be used with the WSAAsyncSelect() call.
  80  */
  81 #define FD_READ                    0x00000001
  82 #define FD_WRITE                   0x00000002
  83 #define FD_OOB                     0x00000004
  84 #define FD_ACCEPT                  0x00000008
  85 #define FD_CONNECT                 0x00000010
  86 #define FD_CLOSE                   0x00000020
  87
  88 /* internal per-socket flags */
  89 #define FD_WINE_LISTENING          0x10000000
  90 #define FD_WINE_NONBLOCKING        0x20000000
  91 #define FD_WINE_CONNECTED          0x40000000
  92 #define FD_WINE_RAW                0x80000000
  93 #define FD_WINE_INTERNAL           0xFFFF0000
  94
  95 struct sock
  96 {
  97     struct object       obj;         /* object header */
  98     struct fd          *fd;          /* socket file descriptor */
  99     unsigned int        state;       /* status bits */
 100     unsigned int        mask;        /* event mask */
 101     unsigned int        hmask;       /* held (blocked) events */
 102     unsigned int        pmask;       /* pending events */
 103     unsigned int        flags;       /* socket flags */
 104     int                 polling;     /* is socket being polled? */
 105     unsigned short      proto;       /* socket protocol */
 106     unsigned short      type;        /* socket type */
 107     unsigned short      family;      /* socket family */
 108     struct event       *event;       /* event object */
 109     user_handle_t       window;      /* window to send the message to */
 110     unsigned int        message;     /* message to send */
 111     obj_handle_t        wparam;      /* message wparam (socket handle) */
 112     int                 errors[FD_MAX_EVENTS]; /* event errors */
 113     timeout_t           connect_time;/* time the socket was connected */
 114     struct sock        *deferred;    /* socket that waits for a deferred accept */
 115     struct async_queue  read_q;      /* queue for asynchronous reads */
 116     struct async_queue  write_q;     /* queue for asynchronous writes */
 117     struct async_queue  ifchange_q;  /* queue for interface change notifications */
 118     struct object      *ifchange_obj; /* the interface change notification object */
 119     struct list         ifchange_entry; /* entry in ifchange notification list */
 120 };
 121
 122 static void sock_dump( struct object *obj, int verbose );
 123 static int sock_signaled( struct object *obj, struct wait_queue_entry *entry );
 124 static struct fd *sock_get_fd( struct object *obj );
 125 static void sock_destroy( struct object *obj );
 126 static struct object *sock_get_ifchange( struct sock *sock );
 127 static void sock_release_ifchange( struct sock *sock );
 128
 129 static int sock_get_poll_events( struct fd *fd );
 130 static void sock_poll_event( struct fd *fd, int event );
 131 static enum server_fd_type sock_get_fd_type( struct fd *fd );
 132 static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 133 static void sock_queue_async( struct fd *fd, struct async *async, int type, int count );
 134 static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
 135
 136 static int sock_get_ntstatus( int err );
 137 static int sock_get_error( int err );
 138 static void sock_set_error(void);
 139
 140 static const struct object_ops sock_ops =
 141 {
 142     sizeof(struct sock),          /* size */
 143     sock_dump,                    /* dump */
 144     no_get_type,                  /* get_type */
 145     add_queue,                    /* add_queue */
 146     remove_queue,                 /* remove_queue */
 147     sock_signaled,                /* signaled */
 148     no_satisfied,                 /* satisfied */
 149     no_signal,                    /* signal */
 150     sock_get_fd,                  /* get_fd */
 151     default_fd_map_access,        /* map_access */
 152     default_get_sd,               /* get_sd */
 153     default_set_sd,               /* set_sd */
 154     no_lookup_name,               /* lookup_name */
 155     no_link_name,                 /* link_name */
 156     NULL,                         /* unlink_name */
 157     no_open_file,                 /* open_file */
 158     fd_close_handle,              /* close_handle */
 159     sock_destroy                  /* destroy */
 160 };
 161
 162 static const struct fd_ops sock_fd_ops =
 163 {
 164     sock_get_poll_events,         /* get_poll_events */
 165     sock_poll_event,              /* poll_event */
 166     sock_get_fd_type,             /* get_fd_type */
 167     no_fd_read,                   /* read */
 168     no_fd_write,                  /* write */
 169     no_fd_flush,                  /* flush */
 170     default_fd_get_file_info,     /* get_file_info */
 171     no_fd_get_volume_info,        /* get_volume_info */
 172     sock_ioctl,                   /* ioctl */
 173     sock_queue_async,             /* queue_async */
 174     sock_reselect_async           /* reselect_async */
 175 };
 176
 177
 178 /* Permutation of 0..FD_MAX_EVENTS - 1 representing the order in which
 179  * we post messages if there are multiple events.  Used to send
 180  * messages.  The problem is if there is both a FD_CONNECT event and,
 181  * say, an FD_READ event available on the same socket, we want to
 182  * notify the app of the connect event first.  Otherwise it may
 183  * discard the read event because it thinks it hasn't connected yet.
 184  */
 185 static const int event_bitorder[FD_MAX_EVENTS] =
 186 {
 187     FD_CONNECT_BIT,
 188     FD_ACCEPT_BIT,
 189     FD_OOB_BIT,
 190     FD_WRITE_BIT,
 191     FD_READ_BIT,
 192     FD_CLOSE_BIT,
 193     6, 7, 8, 9  /* leftovers */
 194 };
 195
 196 /* Flags that make sense only for SOCK_STREAM sockets */
 197 #define STREAM_FLAG_MASK ((unsigned int) (FD_CONNECT | FD_ACCEPT | FD_WINE_LISTENING | FD_WINE_CONNECTED))
 198
 199 typedef enum {
 200     SOCK_SHUTDOWN_ERROR = -1,
 201     SOCK_SHUTDOWN_EOF = 0,
 202     SOCK_SHUTDOWN_POLLHUP = 1
 203 } sock_shutdown_t;
 204
 205 static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
 206
 207 static sock_shutdown_t sock_check_pollhup(void)
 208 {
 209     sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
 210     int fd[2], n;
 211     struct pollfd pfd;
 212     char dummy;
 213
 214     if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) return ret;
 215     if ( shutdown( fd[0], 1 ) ) goto out;
 216
 217     pfd.fd = fd[1];
 218     pfd.events = POLLIN;
 219     pfd.revents = 0;
 220
 221     /* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */
 222     n = poll( &pfd, 1, 1 );
 223     if ( n != 1 ) goto out; /* error or timeout */
 224     if ( pfd.revents & POLLHUP )
 225         ret = SOCK_SHUTDOWN_POLLHUP;
 226     else if ( pfd.revents & POLLIN &&
 227               read( fd[1], &dummy, 1 ) == 0 )
 228         ret = SOCK_SHUTDOWN_EOF;
 229
 230 out:
 231     close( fd[0] );
 232     close( fd[1] );
 233     return ret;
 234 }
 235
 236 void sock_init(void)
 237 {
 238     sock_shutdown_type = sock_check_pollhup();
 239
 240     switch ( sock_shutdown_type )
 241     {
 242     case SOCK_SHUTDOWN_EOF:
 243         if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
 244         break;
 245     case SOCK_SHUTDOWN_POLLHUP:
 246         if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
 247         break;
 248     default:
 249         fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
 250         sock_shutdown_type = SOCK_SHUTDOWN_EOF;
 251     }
 252 }
 253
 254 static int sock_reselect( struct sock *sock )
 255 {
 256     int ev = sock_get_poll_events( sock->fd );
 257
 258     if (debug_level)
 259         fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
 260
 261     if (!sock->polling)  /* FIXME: should find a better way to do this */
 262     {
 263         /* previously unconnected socket, is this reselect supposed to connect it? */
 264         if (!(sock->state & ~FD_WINE_NONBLOCKING)) return 0;
 265         /* ok, it is, attach it to the wineserver's main poll loop */
 266         sock->polling = 1;
 267         allow_fd_caching( sock->fd );
 268     }
 269     /* update condition mask */
 270     set_fd_events( sock->fd, ev );
 271     return ev;
 272 }
 273
 274 /* wake anybody waiting on the socket event or send the associated message */
 275 static void sock_wake_up( struct sock *sock )
 276 {
 277     unsigned int events = sock->pmask & sock->mask;
 278     int i;
 279
 280     if ( !events ) return;
 281
 282     if (sock->event)
 283     {
 284         if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
 285         set_event( sock->event );
 286     }
 287     if (sock->window)
 288     {
 289         if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
 290         for (i = 0; i < FD_MAX_EVENTS; i++)
 291         {
 292             int event = event_bitorder[i];
 293             if (sock->pmask & (1 << event))
 294             {
 295                 lparam_t lparam = (1 << event) | (sock_get_error(sock->errors[event]) << 16);
 296                 post_message( sock->window, sock->message, sock->wparam, lparam );
 297             }
 298         }
 299         sock->pmask = 0;
 300         sock_reselect( sock );
 301     }
 302 }
 303
 304 static inline int sock_error( struct fd *fd )
 305 {
 306     unsigned int optval = 0;
 307     socklen_t optlen = sizeof(optval);
 308
 309     getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
 310     return optval;
 311 }
 312
 313 static int sock_dispatch_asyncs( struct sock *sock, int event, int error )
 314 {
 315     if ( sock->flags & WSA_FLAG_OVERLAPPED )
 316     {
 317         if (event & (POLLIN|POLLPRI) && async_waiting( &sock->read_q ))
 318         {
 319             if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
 320             async_wake_up( &sock->read_q, STATUS_ALERTED );
 321             event &= ~(POLLIN|POLLPRI);
 322         }
 323         if (event & POLLOUT && async_waiting( &sock->write_q ))
 324         {
 325             if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
 326             async_wake_up( &sock->write_q, STATUS_ALERTED );
 327             event &= ~POLLOUT;
 328         }
 329         if ( event & (POLLERR|POLLHUP) )
 330         {
 331             int status = sock_get_ntstatus( error );
 332
 333             if ( !(sock->state & FD_READ) )
 334                 async_wake_up( &sock->read_q, status );
 335             if ( !(sock->state & FD_WRITE) )
 336                 async_wake_up( &sock->write_q, status );
 337         }
 338     }
 339     return event;
 340 }
 341
 342 static void sock_dispatch_events( struct sock *sock, int prevstate, int event, int error )
 343 {
 344     if (prevstate & FD_CONNECT)
 345     {
 346         sock->pmask |= FD_CONNECT;
 347         sock->hmask |= FD_CONNECT;
 348         sock->errors[FD_CONNECT_BIT] = error;
 349         goto end;
 350     }
 351     if (prevstate & FD_WINE_LISTENING)
 352     {
 353         sock->pmask |= FD_ACCEPT;
 354         sock->hmask |= FD_ACCEPT;
 355         sock->errors[FD_ACCEPT_BIT] = error;
 356         goto end;
 357     }
 358
 359     if (event & POLLIN)
 360     {
 361         sock->pmask |= FD_READ;
 362         sock->hmask |= FD_READ;
 363         sock->errors[FD_READ_BIT] = 0;
 364     }
 365
 366     if (event & POLLOUT)
 367     {
 368         sock->pmask |= FD_WRITE;
 369         sock->hmask |= FD_WRITE;
 370         sock->errors[FD_WRITE_BIT] = 0;
 371     }
 372
 373     if (event & POLLPRI)
 374     {
 375         sock->pmask |= FD_OOB;
 376         sock->hmask |= FD_OOB;
 377         sock->errors[FD_OOB_BIT] = 0;
 378     }
 379
 380     if (event & (POLLERR|POLLHUP))
 381     {
 382         sock->pmask |= FD_CLOSE;
 383         sock->hmask |= FD_CLOSE;
 384         sock->errors[FD_CLOSE_BIT] = error;
 385     }
 386 end:
 387     sock_wake_up( sock );
 388 }
 389
 390 static void sock_poll_event( struct fd *fd, int event )
 391 {
 392     struct sock *sock = get_fd_user( fd );
 393     int hangup_seen = 0;
 394     int prevstate = sock->state;
 395     int error = 0;
 396
 397     assert( sock->obj.ops == &sock_ops );
 398     if (debug_level)
 399         fprintf(stderr, "socket %p select event: %x\n", sock, event);
 400
 401     /* we may change event later, remove from loop here */
 402     if (event & (POLLERR|POLLHUP)) set_fd_events( sock->fd, -1 );
 403
 404     if (sock->state & FD_CONNECT)
 405     {
 406         if (event & (POLLERR|POLLHUP))
 407         {
 408             /* we didn't get connected? */
 409             sock->state &= ~FD_CONNECT;
 410             event &= ~POLLOUT;
 411             error = sock_error( fd );
 412         }
 413         else if (event & POLLOUT)
 414         {
 415             /* we got connected */
 416             sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 417             sock->state &= ~FD_CONNECT;
 418             sock->connect_time = current_time;
 419         }
 420     }
 421     else if (sock->state & FD_WINE_LISTENING)
 422     {
 423         /* listening */
 424         if (event & (POLLERR|POLLHUP))
 425             error = sock_error( fd );
 426     }
 427     else
 428     {
 429         /* normal data flow */
 430         if ( sock->type == SOCK_STREAM && ( event & POLLIN ) )
 431         {
 432             char dummy;
 433             int nr;
 434
 435             /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
 436              * has been closed, so we need to check for it explicitly here */
 437             nr  = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
 438             if ( nr == 0 )
 439             {
 440                 hangup_seen = 1;
 441                 event &= ~POLLIN;
 442             }
 443             else if ( nr < 0 )
 444             {
 445                 event &= ~POLLIN;
 446                 /* EAGAIN can happen if an async recv() falls between the server's poll()
 447                    call and the invocation of this routine */
 448                 if ( errno != EAGAIN )
 449                 {
 450                     error = errno;
 451                     event |= POLLERR;
 452                     if ( debug_level )
 453                         fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
 454                 }
 455             }
 456         }
 457
 458         if ( (hangup_seen || event & (POLLHUP|POLLERR)) && (sock->state & (FD_READ|FD_WRITE)) )
 459         {
 460             error = error ? error : sock_error( fd );
 461             if ( (event & POLLERR) || ( sock_shutdown_type == SOCK_SHUTDOWN_EOF && (event & POLLHUP) ))
 462                 sock->state &= ~FD_WRITE;
 463             sock->state &= ~FD_READ;
 464
 465             if (debug_level)
 466                 fprintf(stderr, "socket %p aborted by error %d, event: %x\n", sock, error, event);
 467         }
 468
 469         if (hangup_seen)
 470             event |= POLLHUP;
 471     }
 472
 473     event = sock_dispatch_asyncs( sock, event, error );
 474     sock_dispatch_events( sock, prevstate, event, error );
 475
 476     /* if anyone is stupid enough to wait on the socket object itself,
 477      * maybe we should wake them up too, just in case? */
 478     wake_up( &sock->obj, 0 );
 479
 480     sock_reselect( sock );
 481 }
 482
 483 static void sock_dump( struct object *obj, int verbose )
 484 {
 485     struct sock *sock = (struct sock *)obj;
 486     assert( obj->ops == &sock_ops );
 487     fprintf( stderr, "Socket fd=%p, state=%x, mask=%x, pending=%x, held=%x\n",
 488             sock->fd, sock->state,
 489             sock->mask, sock->pmask, sock->hmask );
 490 }
 491
 492 static int sock_signaled( struct object *obj, struct wait_queue_entry *entry )
 493 {
 494     struct sock *sock = (struct sock *)obj;
 495     assert( obj->ops == &sock_ops );
 496
 497     return check_fd_events( sock->fd, sock_get_poll_events( sock->fd ) ) != 0;
 498 }
 499
 500 static int sock_get_poll_events( struct fd *fd )
 501 {
 502     struct sock *sock = get_fd_user( fd );
 503     unsigned int mask = sock->mask & ~sock->hmask;
 504     unsigned int smask = sock->state & mask;
 505     int ev = 0;
 506
 507     assert( sock->obj.ops == &sock_ops );
 508
 509     if (sock->state & FD_CONNECT)
 510         /* connecting, wait for writable */
 511         return POLLOUT;
 512
 513     if (async_queued( &sock->read_q ))
 514     {
 515         if (async_waiting( &sock->read_q )) ev |= POLLIN | POLLPRI;
 516     }
 517     else if (smask & FD_READ || (sock->state & FD_WINE_LISTENING && mask & FD_ACCEPT))
 518         ev |= POLLIN | POLLPRI;
 519     /* We use POLLIN with 0 bytes recv() as FD_CLOSE indication for stream sockets. */
 520     else if ( sock->type == SOCK_STREAM && sock->state & FD_READ && mask & FD_CLOSE &&
 521               !(sock->hmask & FD_READ) )
 522         ev |= POLLIN;
 523
 524     if (async_queued( &sock->write_q ))
 525     {
 526         if (async_waiting( &sock->write_q )) ev |= POLLOUT;
 527     }
 528     else if (smask & FD_WRITE)
 529         ev |= POLLOUT;
 530
 531     return ev;
 532 }
 533
 534 static enum server_fd_type sock_get_fd_type( struct fd *fd )
 535 {
 536     return FD_TYPE_SOCKET;
 537 }
 538
 539 static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
 540 {
 541     struct sock *sock = get_fd_user( fd );
 542
 543     assert( sock->obj.ops == &sock_ops );
 544
 545     switch(code)
 546     {
 547     case WS_SIO_ADDRESS_LIST_CHANGE:
 548         if ((sock->state & FD_WINE_NONBLOCKING) && async_is_blocking( async ))
 549         {
 550             set_error( STATUS_CANT_WAIT );
 551             return 0;
 552         }
 553         if (!sock_get_ifchange( sock )) return 0;
 554         queue_async( &sock->ifchange_q, async );
 555         set_error( STATUS_PENDING );
 556         return 1;
 557     default:
 558         set_error( STATUS_NOT_SUPPORTED );
 559         return 0;
 560     }
 561 }
 562
 563 static void sock_queue_async( struct fd *fd, struct async *async, int type, int count )
 564 {
 565     struct sock *sock = get_fd_user( fd );
 566     struct async_queue *queue;
 567
 568     assert( sock->obj.ops == &sock_ops );
 569
 570     switch (type)
 571     {
 572     case ASYNC_TYPE_READ:
 573         queue = &sock->read_q;
 574         break;
 575     case ASYNC_TYPE_WRITE:
 576         queue = &sock->write_q;
 577         break;
 578     default:
 579         set_error( STATUS_INVALID_PARAMETER );
 580         return;
 581     }
 582
 583     if ( ( !( sock->state & (FD_READ|FD_CONNECT|FD_WINE_LISTENING) ) && type == ASYNC_TYPE_READ  ) ||
 584          ( !( sock->state & (FD_WRITE|FD_CONNECT) ) && type == ASYNC_TYPE_WRITE ) )
 585     {
 586         set_error( STATUS_PIPE_DISCONNECTED );
 587         return;
 588     }
 589
 590     queue_async( queue, async );
 591     sock_reselect( sock );
 592
 593     set_error( STATUS_PENDING );
 594 }
 595
 596 static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
 597 {
 598     struct sock *sock = get_fd_user( fd );
 599     /* ignore reselect on ifchange queue */
 600     if (&sock->ifchange_q != queue)
 601         sock_reselect( sock );
 602 }
 603
 604 static struct fd *sock_get_fd( struct object *obj )
 605 {
 606     struct sock *sock = (struct sock *)obj;
 607     return (struct fd *)grab_object( sock->fd );
 608 }
 609
 610 static void sock_destroy( struct object *obj )
 611 {
 612     struct sock *sock = (struct sock *)obj;
 613     assert( obj->ops == &sock_ops );
 614
 615     /* FIXME: special socket shutdown stuff? */
 616
 617     if ( sock->deferred )
 618         release_object( sock->deferred );
 619
 620     async_wake_up( &sock->ifchange_q, STATUS_CANCELLED );
 621     sock_release_ifchange( sock );
 622     free_async_queue( &sock->read_q );
 623     free_async_queue( &sock->write_q );
 624     free_async_queue( &sock->ifchange_q );
 625     if (sock->event) release_object( sock->event );
 626     if (sock->fd)
 627     {
 628         /* shut the socket down to force pending poll() calls in the client to return */
 629         shutdown( get_unix_fd(sock->fd), SHUT_RDWR );
 630         release_object( sock->fd );
 631     }
 632 }
 633
 634 static void init_sock(struct sock *sock)
 635 {
 636     sock->state = 0;
 637     sock->mask    = 0;
 638     sock->hmask   = 0;
 639     sock->pmask   = 0;
 640     sock->polling = 0;
 641     sock->flags   = 0;
 642     sock->type    = 0;
 643     sock->family  = 0;
 644     sock->event   = NULL;
 645     sock->window  = 0;
 646     sock->message = 0;
 647     sock->wparam  = 0;
 648     sock->connect_time = 0;
 649     sock->deferred = NULL;
 650     sock->ifchange_obj = NULL;
 651     init_async_queue( &sock->read_q );
 652     init_async_queue( &sock->write_q );
 653     init_async_queue( &sock->ifchange_q );
 654     memset( sock->errors, 0, sizeof(sock->errors) );
 655 }
 656
 657 /* create a new and unconnected socket */
 658 static struct object *create_socket( int family, int type, int protocol, unsigned int flags )
 659 {
 660     struct sock *sock;
 661     int sockfd;
 662
 663     sockfd = socket( family, type, protocol );
 664     if (debug_level)
 665         fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
 666     if (sockfd == -1)
 667     {
 668         sock_set_error();
 669         return NULL;
 670     }
 671     fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 672     if (!(sock = alloc_object( &sock_ops )))
 673     {
 674         close( sockfd );
 675         return NULL;
 676     }
 677     init_sock( sock );
 678     sock->state  = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
 679     sock->flags  = flags;
 680     sock->proto  = protocol;
 681     sock->type   = type;
 682     sock->family = family;
 683
 684     if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj,
 685                             (flags & WSA_FLAG_OVERLAPPED) ? 0 : FILE_SYNCHRONOUS_IO_NONALERT )))
 686     {
 687         release_object( sock );
 688         return NULL;
 689     }
 690     sock_reselect( sock );
 691     clear_error();
 692     return &sock->obj;
 693 }
 694
 695 /* accepts a socket and inits it */
 696 static int accept_new_fd( struct sock *sock )
 697 {
 698
 699     /* Try to accept(2). We can't be safe that this an already connected socket
 700      * or that accept() is allowed on it. In those cases we will get -1/errno
 701      * return.
 702      */
 703     int acceptfd;
 704     struct sockaddr saddr;
 705     socklen_t slen = sizeof(saddr);
 706     acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen);
 707     if (acceptfd == -1)
 708     {
 709         sock_set_error();
 710         return acceptfd;
 711     }
 712
 713     fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 714     return acceptfd;
 715 }
 716
 717 /* accept a socket (creates a new fd) */
 718 static struct sock *accept_socket( obj_handle_t handle )
 719 {
 720     struct sock *acceptsock;
 721     struct sock *sock;
 722     int acceptfd;
 723
 724     sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
 725     if (!sock)
 726         return NULL;
 727
 728     if ( sock->deferred )
 729     {
 730         acceptsock = sock->deferred;
 731         sock->deferred = NULL;
 732     }
 733     else
 734     {
 735         if ((acceptfd = accept_new_fd( sock )) == -1)
 736         {
 737             release_object( sock );
 738             return NULL;
 739         }
 740         if (!(acceptsock = alloc_object( &sock_ops )))
 741         {
 742             close( acceptfd );
 743             release_object( sock );
 744             return NULL;
 745         }
 746
 747         init_sock( acceptsock );
 748         /* newly created socket gets the same properties of the listening socket */
 749         acceptsock->state  = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 750         if (sock->state & FD_WINE_NONBLOCKING)
 751             acceptsock->state |= FD_WINE_NONBLOCKING;
 752         acceptsock->mask    = sock->mask;
 753         acceptsock->proto   = sock->proto;
 754         acceptsock->type    = sock->type;
 755         acceptsock->family  = sock->family;
 756         acceptsock->window  = sock->window;
 757         acceptsock->message = sock->message;
 758         acceptsock->connect_time = current_time;
 759         if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
 760         acceptsock->flags = sock->flags;
 761         if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
 762                                                     get_fd_options( sock->fd ) )))
 763         {
 764             release_object( acceptsock );
 765             release_object( sock );
 766             return NULL;
 767         }
 768     }
 769     clear_error();
 770     sock->pmask &= ~FD_ACCEPT;
 771     sock->hmask &= ~FD_ACCEPT;
 772     sock_reselect( sock );
 773     release_object( sock );
 774     return acceptsock;
 775 }
 776
 777 static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
 778 {
 779     int acceptfd;
 780     struct fd *newfd;
 781     if ( sock->deferred )
 782     {
 783         newfd = dup_fd_object( sock->deferred->fd, 0, 0,
 784                                get_fd_options( acceptsock->fd ) );
 785         if ( !newfd )
 786             return FALSE;
 787
 788         set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
 789
 790         release_object( sock->deferred );
 791         sock->deferred = NULL;
 792     }
 793     else
 794     {
 795         if ((acceptfd = accept_new_fd( sock )) == -1)
 796             return FALSE;
 797
 798         if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
 799                                             get_fd_options( acceptsock->fd ) )))
 800             return FALSE;
 801     }
 802
 803     acceptsock->state  |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 804     acceptsock->hmask   = 0;
 805     acceptsock->pmask   = 0;
 806     acceptsock->polling = 0;
 807     acceptsock->proto   = sock->proto;
 808     acceptsock->type    = sock->type;
 809     acceptsock->family  = sock->family;
 810     acceptsock->wparam  = 0;
 811     acceptsock->deferred = NULL;
 812     acceptsock->connect_time = current_time;
 813     fd_copy_completion( acceptsock->fd, newfd );
 814     release_object( acceptsock->fd );
 815     acceptsock->fd = newfd;
 816
 817     clear_error();
 818     sock->pmask &= ~FD_ACCEPT;
 819     sock->hmask &= ~FD_ACCEPT;
 820     sock_reselect( sock );
 821
 822     return TRUE;
 823 }
 824
 825 /* return an errno value mapped to a WSA error */
 826 static int sock_get_error( int err )
 827 {
 828     switch (err)
 829     {
 830         case EINTR:             return WSAEINTR;
 831         case EBADF:             return WSAEBADF;
 832         case EPERM:
 833         case EACCES:            return WSAEACCES;
 834         case EFAULT:            return WSAEFAULT;
 835         case EINVAL:            return WSAEINVAL;
 836         case EMFILE:            return WSAEMFILE;
 837         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 838         case EINPROGRESS:       return WSAEINPROGRESS;
 839         case EALREADY:          return WSAEALREADY;
 840         case ENOTSOCK:          return WSAENOTSOCK;
 841         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 842         case EMSGSIZE:          return WSAEMSGSIZE;
 843         case EPROTOTYPE:        return WSAEPROTOTYPE;
 844         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 845         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 846         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 847         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 848         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 849         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 850         case EADDRINUSE:        return WSAEADDRINUSE;
 851         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 852         case ENETDOWN:          return WSAENETDOWN;
 853         case ENETUNREACH:       return WSAENETUNREACH;
 854         case ENETRESET:         return WSAENETRESET;
 855         case ECONNABORTED:      return WSAECONNABORTED;
 856         case EPIPE:
 857         case ECONNRESET:        return WSAECONNRESET;
 858         case ENOBUFS:           return WSAENOBUFS;
 859         case EISCONN:           return WSAEISCONN;
 860         case ENOTCONN:          return WSAENOTCONN;
 861         case ESHUTDOWN:         return WSAESHUTDOWN;
 862         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 863         case ETIMEDOUT:         return WSAETIMEDOUT;
 864         case ECONNREFUSED:      return WSAECONNREFUSED;
 865         case ELOOP:             return WSAELOOP;
 866         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 867         case EHOSTDOWN:         return WSAEHOSTDOWN;
 868         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 869         case ENOTEMPTY:         return WSAENOTEMPTY;
 870 #ifdef EPROCLIM
 871         case EPROCLIM:          return WSAEPROCLIM;
 872 #endif
 873 #ifdef EUSERS
 874         case EUSERS:            return WSAEUSERS;
 875 #endif
 876 #ifdef EDQUOT
 877         case EDQUOT:            return WSAEDQUOT;
 878 #endif
 879 #ifdef ESTALE
 880         case ESTALE:            return WSAESTALE;
 881 #endif
 882 #ifdef EREMOTE
 883         case EREMOTE:           return WSAEREMOTE;
 884 #endif
 885
 886         case 0:                 return 0;
 887         default:
 888             errno = err;
 889             perror("wineserver: sock_get_error() can't map error");
 890             return WSAEFAULT;
 891     }
 892 }
 893
 894 static int sock_get_ntstatus( int err )
 895 {
 896     switch ( err )
 897     {
 898         case EBADF:             return STATUS_INVALID_HANDLE;
 899         case EBUSY:             return STATUS_DEVICE_BUSY;
 900         case EPERM:
 901         case EACCES:            return STATUS_ACCESS_DENIED;
 902         case EFAULT:            return STATUS_NO_MEMORY;
 903         case EINVAL:            return STATUS_INVALID_PARAMETER;
 904         case ENFILE:
 905         case EMFILE:            return STATUS_TOO_MANY_OPENED_FILES;
 906         case EWOULDBLOCK:       return STATUS_CANT_WAIT;
 907         case EINPROGRESS:       return STATUS_PENDING;
 908         case EALREADY:          return STATUS_NETWORK_BUSY;
 909         case ENOTSOCK:          return STATUS_OBJECT_TYPE_MISMATCH;
 910         case EDESTADDRREQ:      return STATUS_INVALID_PARAMETER;
 911         case EMSGSIZE:          return STATUS_BUFFER_OVERFLOW;
 912         case EPROTONOSUPPORT:
 913         case ESOCKTNOSUPPORT:
 914         case EPFNOSUPPORT:
 915         case EAFNOSUPPORT:
 916         case EPROTOTYPE:        return STATUS_NOT_SUPPORTED;
 917         case ENOPROTOOPT:       return STATUS_INVALID_PARAMETER;
 918         case EOPNOTSUPP:        return STATUS_NOT_SUPPORTED;
 919         case EADDRINUSE:        return STATUS_ADDRESS_ALREADY_ASSOCIATED;
 920         case EADDRNOTAVAIL:     return STATUS_INVALID_PARAMETER;
 921         case ECONNREFUSED:      return STATUS_CONNECTION_REFUSED;
 922         case ESHUTDOWN:         return STATUS_PIPE_DISCONNECTED;
 923         case ENOTCONN:          return STATUS_CONNECTION_DISCONNECTED;
 924         case ETIMEDOUT:         return STATUS_IO_TIMEOUT;
 925         case ENETUNREACH:       return STATUS_NETWORK_UNREACHABLE;
 926         case EHOSTUNREACH:      return STATUS_HOST_UNREACHABLE;
 927         case ENETDOWN:          return STATUS_NETWORK_BUSY;
 928         case EPIPE:
 929         case ECONNRESET:        return STATUS_CONNECTION_RESET;
 930         case ECONNABORTED:      return STATUS_CONNECTION_ABORTED;
 931
 932         case 0:                 return STATUS_SUCCESS;
 933         default:
 934             errno = err;
 935             perror("wineserver: sock_get_ntstatus() can't map error");
 936             return STATUS_UNSUCCESSFUL;
 937     }
 938 }
 939
 940 /* set the last error depending on errno */
 941 static void sock_set_error(void)
 942 {
 943     set_error( sock_get_ntstatus( errno ) );
 944 }
 945
 946 #ifdef HAVE_LINUX_RTNETLINK_H
 947
 948 /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
 949 static struct object *ifchange_object;
 950
 951 static void ifchange_dump( struct object *obj, int verbose );
 952 static struct fd *ifchange_get_fd( struct object *obj );
 953 static void ifchange_destroy( struct object *obj );
 954
 955 static int ifchange_get_poll_events( struct fd *fd );
 956 static void ifchange_poll_event( struct fd *fd, int event );
 957
 958 struct ifchange
 959 {
 960     struct object       obj;     /* object header */
 961     struct fd          *fd;      /* interface change file descriptor */
 962     struct list         sockets; /* list of sockets to send interface change notifications */
 963 };
 964
 965 static const struct object_ops ifchange_ops =
 966 {
 967     sizeof(struct ifchange), /* size */
 968     ifchange_dump,           /* dump */
 969     no_get_type,             /* get_type */
 970     add_queue,               /* add_queue */
 971     NULL,                    /* remove_queue */
 972     NULL,                    /* signaled */
 973     no_satisfied,            /* satisfied */
 974     no_signal,               /* signal */
 975     ifchange_get_fd,         /* get_fd */
 976     default_fd_map_access,   /* map_access */
 977     default_get_sd,          /* get_sd */
 978     default_set_sd,          /* set_sd */
 979     no_lookup_name,          /* lookup_name */
 980     no_link_name,            /* link_name */
 981     NULL,                    /* unlink_name */
 982     no_open_file,            /* open_file */
 983     no_close_handle,         /* close_handle */
 984     ifchange_destroy         /* destroy */
 985 };
 986
 987 static const struct fd_ops ifchange_fd_ops =
 988 {
 989     ifchange_get_poll_events, /* get_poll_events */
 990     ifchange_poll_event,      /* poll_event */
 991     NULL,                     /* get_fd_type */
 992     no_fd_read,               /* read */
 993     no_fd_write,              /* write */
 994     no_fd_flush,              /* flush */
 995     no_fd_get_file_info,      /* get_file_info */
 996     no_fd_get_volume_info,    /* get_volume_info */
 997     no_fd_ioctl,              /* ioctl */
 998     NULL,                     /* queue_async */
 999     NULL                      /* reselect_async */
1000 };
1001
1002 static void ifchange_dump( struct object *obj, int verbose )
1003 {
1004     assert( obj->ops == &ifchange_ops );
1005     fprintf( stderr, "Interface change\n" );
1006 }
1007
1008 static struct fd *ifchange_get_fd( struct object *obj )
1009 {
1010     struct ifchange *ifchange = (struct ifchange *)obj;
1011     return (struct fd *)grab_object( ifchange->fd );
1012 }
1013
1014 static void ifchange_destroy( struct object *obj )
1015 {
1016     struct ifchange *ifchange = (struct ifchange *)obj;
1017     assert( obj->ops == &ifchange_ops );
1018
1019     release_object( ifchange->fd );
1020
1021     /* reset the global ifchange object so that it will be recreated if it is needed again */
1022     assert( obj == ifchange_object );
1023     ifchange_object = NULL;
1024 }
1025
1026 static int ifchange_get_poll_events( struct fd *fd )
1027 {
1028     return POLLIN;
1029 }
1030
1031 /* wake up all the sockets waiting for a change notification event */
1032 static void ifchange_wake_up( struct object *obj, unsigned int status )
1033 {
1034     struct ifchange *ifchange = (struct ifchange *)obj;
1035     struct list *ptr, *next;
1036     assert( obj->ops == &ifchange_ops );
1037     assert( obj == ifchange_object );
1038
1039     LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
1040     {
1041         struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
1042
1043         assert( sock->ifchange_obj );
1044         async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
1045         sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
1046     }
1047 }
1048
1049 static void ifchange_poll_event( struct fd *fd, int event )
1050 {
1051     struct object *ifchange = get_fd_user( fd );
1052     unsigned int status = STATUS_PENDING;
1053     char buffer[PIPE_BUF];
1054     int r;
1055
1056     r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
1057     if (r < 0)
1058     {
1059         if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
1060             return;  /* retry when poll() says the socket is ready */
1061         status = sock_get_ntstatus( errno );
1062     }
1063     else if (r > 0)
1064     {
1065         struct nlmsghdr *nlh;
1066
1067         for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
1068         {
1069             if (nlh->nlmsg_type == NLMSG_DONE)
1070                 break;
1071             if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
1072                 status = STATUS_SUCCESS;
1073         }
1074     }
1075     else status = STATUS_CANCELLED;
1076
1077     if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
1078 }
1079
1080 #endif
1081
1082 /* we only need one of these interface notification objects, all of the sockets dependent upon
1083  * it will wake up when a notification event occurs */
1084  static struct object *get_ifchange( void )
1085  {
1086 #ifdef HAVE_LINUX_RTNETLINK_H
1087     struct ifchange *ifchange;
1088     struct sockaddr_nl addr;
1089     int unix_fd;
1090
1091     if (ifchange_object)
1092     {
1093         /* increment the refcount for each socket that uses the ifchange object */
1094         return grab_object( ifchange_object );
1095     }
1096
1097     /* create the socket we need for processing interface change notifications */
1098     unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
1099     if (unix_fd == -1)
1100     {
1101         sock_set_error();
1102         return NULL;
1103     }
1104     fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
1105     memset( &addr, 0, sizeof(addr) );
1106     addr.nl_family = AF_NETLINK;
1107     addr.nl_groups = RTMGRP_IPV4_IFADDR;
1108     /* bind the socket to the special netlink kernel interface */
1109     if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
1110     {
1111         close( unix_fd );
1112         sock_set_error();
1113         return NULL;
1114     }
1115     if (!(ifchange = alloc_object( &ifchange_ops )))
1116     {
1117         close( unix_fd );
1118         set_error( STATUS_NO_MEMORY );
1119         return NULL;
1120     }
1121     list_init( &ifchange->sockets );
1122     if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
1123     {
1124         release_object( ifchange );
1125         set_error( STATUS_NO_MEMORY );
1126         return NULL;
1127     }
1128     set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
1129
1130     /* the ifchange object is now successfully configured */
1131     ifchange_object = &ifchange->obj;
1132     return &ifchange->obj;
1133 #else
1134     set_error( STATUS_NOT_SUPPORTED );
1135     return NULL;
1136 #endif
1137 }
1138
1139 /* add the socket to the interface change notification list */
1140 static void ifchange_add_sock( struct object *obj, struct sock *sock )
1141 {
1142 #ifdef HAVE_LINUX_RTNETLINK_H
1143     struct ifchange *ifchange = (struct ifchange *)obj;
1144
1145     list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
1146 #endif
1147 }
1148
1149 /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
1150 static struct object *sock_get_ifchange( struct sock *sock )
1151 {
1152     struct object *ifchange;
1153
1154     if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
1155         return sock->ifchange_obj;
1156
1157     if (!(ifchange = get_ifchange()))
1158         return NULL;
1159
1160     /* add the socket to the ifchange notification list */
1161     ifchange_add_sock( ifchange, sock );
1162     sock->ifchange_obj = ifchange;
1163     return ifchange;
1164 }
1165
1166 /* destroy an existing ifchange queue for a specific socket */
1167 static void sock_release_ifchange( struct sock *sock )
1168 {
1169     if (sock->ifchange_obj)
1170     {
1171         list_remove( &sock->ifchange_entry );
1172         release_object( sock->ifchange_obj );
1173         sock->ifchange_obj = NULL;
1174     }
1175 }
1176
1177 /* create a socket */
1178 DECL_HANDLER(create_socket)
1179 {
1180     struct object *obj;
1181
1182     reply->handle = 0;
1183     if ((obj = create_socket( req->family, req->type, req->protocol, req->flags )) != NULL)
1184     {
1185         reply->handle = alloc_handle( current->process, obj, req->access, req->attributes );
1186         release_object( obj );
1187     }
1188 }
1189
1190 /* accept a socket */
1191 DECL_HANDLER(accept_socket)
1192 {
1193     struct sock *sock;
1194
1195     reply->handle = 0;
1196     if ((sock = accept_socket( req->lhandle )) != NULL)
1197     {
1198         reply->handle = alloc_handle( current->process, &sock->obj, req->access, req->attributes );
1199         sock->wparam = reply->handle;  /* wparam for message is the socket handle */
1200         sock_reselect( sock );
1201         release_object( &sock->obj );
1202     }
1203 }
1204
1205 /* accept a socket into an initialized socket */
1206 DECL_HANDLER(accept_into_socket)
1207 {
1208     struct sock *sock, *acceptsock;
1209     const int all_attributes = FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|FILE_READ_DATA;
1210
1211     if (!(sock = (struct sock *)get_handle_obj( current->process, req->lhandle,
1212                                                 all_attributes, &sock_ops)))
1213         return;
1214
1215     if (!(acceptsock = (struct sock *)get_handle_obj( current->process, req->ahandle,
1216                                                       all_attributes, &sock_ops)))
1217     {
1218         release_object( sock );
1219         return;
1220     }
1221
1222     if (accept_into_socket( sock, acceptsock ))
1223     {
1224         acceptsock->wparam = req->ahandle;  /* wparam for message is the socket handle */
1225         sock_reselect( acceptsock );
1226     }
1227     release_object( acceptsock );
1228     release_object( sock );
1229 }
1230
1231 /* set socket event parameters */
1232 DECL_HANDLER(set_socket_event)
1233 {
1234     struct sock *sock;
1235     struct event *old_event;
1236
1237     if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
1238                                                 FILE_WRITE_ATTRIBUTES, &sock_ops))) return;
1239     old_event = sock->event;
1240     sock->mask    = req->mask;
1241     sock->hmask   &= ~req->mask; /* re-enable held events */
1242     sock->event   = NULL;
1243     sock->window  = req->window;
1244     sock->message = req->msg;
1245     sock->wparam  = req->handle;  /* wparam is the socket handle */
1246     if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
1247
1248     if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
1249
1250     sock_reselect( sock );
1251
1252     sock->state |= FD_WINE_NONBLOCKING;
1253
1254     /* if a network event is pending, signal the event object
1255        it is possible that FD_CONNECT or FD_ACCEPT network events has happened
1256        before a WSAEventSelect() was done on it.
1257        (when dealing with Asynchronous socket)  */
1258     sock_wake_up( sock );
1259
1260     if (old_event) release_object( old_event ); /* we're through with it */
1261     release_object( &sock->obj );
1262 }
1263
1264 /* get socket event parameters */
1265 DECL_HANDLER(get_socket_event)
1266 {
1267     struct sock *sock;
1268     int i;
1269     int errors[FD_MAX_EVENTS];
1270
1271     sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
1272     if (!sock)
1273     {
1274         reply->mask  = 0;
1275         reply->pmask = 0;
1276         reply->state = 0;
1277         return;
1278     }
1279     reply->mask  = sock->mask;
1280     reply->pmask = sock->pmask;
1281     reply->state = sock->state;
1282     for (i = 0; i < FD_MAX_EVENTS; i++)
1283         errors[i] = sock_get_ntstatus(sock->errors[i]);
1284
1285     set_reply_data( errors, min( get_reply_max_size(), sizeof(errors) ));
1286
1287     if (req->service)
1288     {
1289         if (req->c_event)
1290         {
1291             struct event *cevent = get_event_obj( current->process, req->c_event,
1292                                                   EVENT_MODIFY_STATE );
1293             if (cevent)
1294             {
1295                 reset_event( cevent );
1296                 release_object( cevent );
1297             }
1298         }
1299         sock->pmask = 0;
1300         sock_reselect( sock );
1301     }
1302     release_object( &sock->obj );
1303 }
1304
1305 /* re-enable pending socket events */
1306 DECL_HANDLER(enable_socket_event)
1307 {
1308     struct sock *sock;
1309
1310     if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
1311                                                FILE_WRITE_ATTRIBUTES, &sock_ops)))
1312         return;
1313
1314     /* for event-based notification, windows erases stale events */
1315     sock->pmask &= ~req->mask;
1316
1317     sock->hmask &= ~req->mask;
1318     sock->state |= req->sstate;
1319     sock->state &= ~req->cstate;
1320     if ( sock->type != SOCK_STREAM ) sock->state &= ~STREAM_FLAG_MASK;
1321
1322     sock_reselect( sock );
1323
1324     release_object( &sock->obj );
1325 }
1326
1327 DECL_HANDLER(set_socket_deferred)
1328 {
1329     struct sock *sock, *acceptsock;
1330
1331     sock=(struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops );
1332     if ( !sock )
1333         return;
1334
1335     acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops );
1336     if ( !acceptsock )
1337     {
1338         release_object( sock );
1339         return;
1340     }
1341     sock->deferred = acceptsock;
1342     release_object( sock );
1343 }
1344
1345 DECL_HANDLER(get_socket_info)
1346 {
1347     struct sock *sock;
1348
1349     sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
1350     if (!sock) return;
1351
1352     reply->family   = sock->family;
1353     reply->type     = sock->type;
1354     reply->protocol = sock->proto;
1355
1356     release_object( &sock->obj );
1357 }