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     unsigned 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 unsigned int sock_get_error( int err );
 138
 139 static const struct object_ops sock_ops =
 140 {
 141     sizeof(struct sock),          /* size */
 142     sock_dump,                    /* dump */
 143     no_get_type,                  /* get_type */
 144     add_queue,                    /* add_queue */
 145     remove_queue,                 /* remove_queue */
 146     sock_signaled,                /* signaled */
 147     no_satisfied,                 /* satisfied */
 148     no_signal,                    /* signal */
 149     sock_get_fd,                  /* get_fd */
 150     default_fd_map_access,        /* map_access */
 151     default_get_sd,               /* get_sd */
 152     default_set_sd,               /* set_sd */
 153     no_lookup_name,               /* lookup_name */
 154     no_link_name,                 /* link_name */
 155     NULL,                         /* unlink_name */
 156     no_open_file,                 /* open_file */
 157     no_kernel_obj_list,           /* get_kernel_obj_list */
 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->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] = sock_get_error( 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] = sock_get_error( 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] = sock_get_error( 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_win32_error( WSAEWOULDBLOCK );
 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 (sockfd == -1)
 665     {
 666         if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT );
 667         else set_win32_error( sock_get_error( errno ));
 668         return NULL;
 669     }
 670     fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 671     if (!(sock = alloc_object( &sock_ops )))
 672     {
 673         close( sockfd );
 674         return NULL;
 675     }
 676     init_sock( sock );
 677     sock->state  = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
 678     sock->flags  = flags;
 679     sock->proto  = protocol;
 680     sock->type   = type;
 681     sock->family = family;
 682
 683     if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj,
 684                             (flags & WSA_FLAG_OVERLAPPED) ? 0 : FILE_SYNCHRONOUS_IO_NONALERT )))
 685     {
 686         release_object( sock );
 687         return NULL;
 688     }
 689     sock_reselect( sock );
 690     clear_error();
 691     return &sock->obj;
 692 }
 693
 694 /* accepts a socket and inits it */
 695 static int accept_new_fd( struct sock *sock )
 696 {
 697
 698     /* Try to accept(2). We can't be safe that this an already connected socket
 699      * or that accept() is allowed on it. In those cases we will get -1/errno
 700      * return.
 701      */
 702     struct sockaddr saddr;
 703     socklen_t slen = sizeof(saddr);
 704     int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen );
 705     if (acceptfd != -1)
 706         fcntl( acceptfd, F_SETFL, O_NONBLOCK );
 707     else
 708         set_win32_error( sock_get_error( errno ));
 709     return acceptfd;
 710 }
 711
 712 /* accept a socket (creates a new fd) */
 713 static struct sock *accept_socket( obj_handle_t handle )
 714 {
 715     struct sock *acceptsock;
 716     struct sock *sock;
 717     int acceptfd;
 718
 719     sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
 720     if (!sock)
 721         return NULL;
 722
 723     if ( sock->deferred )
 724     {
 725         acceptsock = sock->deferred;
 726         sock->deferred = NULL;
 727     }
 728     else
 729     {
 730         if ((acceptfd = accept_new_fd( sock )) == -1)
 731         {
 732             release_object( sock );
 733             return NULL;
 734         }
 735         if (!(acceptsock = alloc_object( &sock_ops )))
 736         {
 737             close( acceptfd );
 738             release_object( sock );
 739             return NULL;
 740         }
 741
 742         init_sock( acceptsock );
 743         /* newly created socket gets the same properties of the listening socket */
 744         acceptsock->state  = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 745         if (sock->state & FD_WINE_NONBLOCKING)
 746             acceptsock->state |= FD_WINE_NONBLOCKING;
 747         acceptsock->mask    = sock->mask;
 748         acceptsock->proto   = sock->proto;
 749         acceptsock->type    = sock->type;
 750         acceptsock->family  = sock->family;
 751         acceptsock->window  = sock->window;
 752         acceptsock->message = sock->message;
 753         acceptsock->connect_time = current_time;
 754         if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
 755         acceptsock->flags = sock->flags;
 756         if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
 757                                                     get_fd_options( sock->fd ) )))
 758         {
 759             release_object( acceptsock );
 760             release_object( sock );
 761             return NULL;
 762         }
 763     }
 764     clear_error();
 765     sock->pmask &= ~FD_ACCEPT;
 766     sock->hmask &= ~FD_ACCEPT;
 767     sock_reselect( sock );
 768     release_object( sock );
 769     return acceptsock;
 770 }
 771
 772 static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
 773 {
 774     int acceptfd;
 775     struct fd *newfd;
 776     if ( sock->deferred )
 777     {
 778         newfd = dup_fd_object( sock->deferred->fd, 0, 0,
 779                                get_fd_options( acceptsock->fd ) );
 780         if ( !newfd )
 781             return FALSE;
 782
 783         set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
 784
 785         release_object( sock->deferred );
 786         sock->deferred = NULL;
 787     }
 788     else
 789     {
 790         if ((acceptfd = accept_new_fd( sock )) == -1)
 791             return FALSE;
 792
 793         if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
 794                                             get_fd_options( acceptsock->fd ) )))
 795             return FALSE;
 796     }
 797
 798     acceptsock->state  |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 799     acceptsock->hmask   = 0;
 800     acceptsock->pmask   = 0;
 801     acceptsock->polling = 0;
 802     acceptsock->proto   = sock->proto;
 803     acceptsock->type    = sock->type;
 804     acceptsock->family  = sock->family;
 805     acceptsock->wparam  = 0;
 806     acceptsock->deferred = NULL;
 807     acceptsock->connect_time = current_time;
 808     fd_copy_completion( acceptsock->fd, newfd );
 809     release_object( acceptsock->fd );
 810     acceptsock->fd = newfd;
 811
 812     clear_error();
 813     sock->pmask &= ~FD_ACCEPT;
 814     sock->hmask &= ~FD_ACCEPT;
 815     sock_reselect( sock );
 816
 817     return TRUE;
 818 }
 819
 820 /* return an errno value mapped to a WSA error */
 821 static unsigned int sock_get_error( int err )
 822 {
 823     switch (err)
 824     {
 825         case EINTR:             return WSAEINTR;
 826         case EBADF:             return WSAEBADF;
 827         case EPERM:
 828         case EACCES:            return WSAEACCES;
 829         case EFAULT:            return WSAEFAULT;
 830         case EINVAL:            return WSAEINVAL;
 831         case EMFILE:            return WSAEMFILE;
 832         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 833         case EINPROGRESS:       return WSAEINPROGRESS;
 834         case EALREADY:          return WSAEALREADY;
 835         case ENOTSOCK:          return WSAENOTSOCK;
 836         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 837         case EMSGSIZE:          return WSAEMSGSIZE;
 838         case EPROTOTYPE:        return WSAEPROTOTYPE;
 839         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 840         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 841         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 842         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 843         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 844         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 845         case EADDRINUSE:        return WSAEADDRINUSE;
 846         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 847         case ENETDOWN:          return WSAENETDOWN;
 848         case ENETUNREACH:       return WSAENETUNREACH;
 849         case ENETRESET:         return WSAENETRESET;
 850         case ECONNABORTED:      return WSAECONNABORTED;
 851         case EPIPE:
 852         case ECONNRESET:        return WSAECONNRESET;
 853         case ENOBUFS:           return WSAENOBUFS;
 854         case EISCONN:           return WSAEISCONN;
 855         case ENOTCONN:          return WSAENOTCONN;
 856         case ESHUTDOWN:         return WSAESHUTDOWN;
 857         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 858         case ETIMEDOUT:         return WSAETIMEDOUT;
 859         case ECONNREFUSED:      return WSAECONNREFUSED;
 860         case ELOOP:             return WSAELOOP;
 861         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 862         case EHOSTDOWN:         return WSAEHOSTDOWN;
 863         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 864         case ENOTEMPTY:         return WSAENOTEMPTY;
 865 #ifdef EPROCLIM
 866         case EPROCLIM:          return WSAEPROCLIM;
 867 #endif
 868 #ifdef EUSERS
 869         case EUSERS:            return WSAEUSERS;
 870 #endif
 871 #ifdef EDQUOT
 872         case EDQUOT:            return WSAEDQUOT;
 873 #endif
 874 #ifdef ESTALE
 875         case ESTALE:            return WSAESTALE;
 876 #endif
 877 #ifdef EREMOTE
 878         case EREMOTE:           return WSAEREMOTE;
 879 #endif
 880
 881         case 0:                 return 0;
 882         default:
 883             errno = err;
 884             perror("wineserver: sock_get_error() can't map error");
 885             return WSAEFAULT;
 886     }
 887 }
 888
 889 static int sock_get_ntstatus( int err )
 890 {
 891     switch ( err )
 892     {
 893         case EBADF:             return STATUS_INVALID_HANDLE;
 894         case EBUSY:             return STATUS_DEVICE_BUSY;
 895         case EPERM:
 896         case EACCES:            return STATUS_ACCESS_DENIED;
 897         case EFAULT:            return STATUS_NO_MEMORY;
 898         case EINVAL:            return STATUS_INVALID_PARAMETER;
 899         case ENFILE:
 900         case EMFILE:            return STATUS_TOO_MANY_OPENED_FILES;
 901         case EWOULDBLOCK:       return STATUS_CANT_WAIT;
 902         case EINPROGRESS:       return STATUS_PENDING;
 903         case EALREADY:          return STATUS_NETWORK_BUSY;
 904         case ENOTSOCK:          return STATUS_OBJECT_TYPE_MISMATCH;
 905         case EDESTADDRREQ:      return STATUS_INVALID_PARAMETER;
 906         case EMSGSIZE:          return STATUS_BUFFER_OVERFLOW;
 907         case EPROTONOSUPPORT:
 908         case ESOCKTNOSUPPORT:
 909         case EPFNOSUPPORT:
 910         case EAFNOSUPPORT:
 911         case EPROTOTYPE:        return STATUS_NOT_SUPPORTED;
 912         case ENOPROTOOPT:       return STATUS_INVALID_PARAMETER;
 913         case EOPNOTSUPP:        return STATUS_NOT_SUPPORTED;
 914         case EADDRINUSE:        return STATUS_ADDRESS_ALREADY_ASSOCIATED;
 915         case EADDRNOTAVAIL:     return STATUS_INVALID_PARAMETER;
 916         case ECONNREFUSED:      return STATUS_CONNECTION_REFUSED;
 917         case ESHUTDOWN:         return STATUS_PIPE_DISCONNECTED;
 918         case ENOTCONN:          return STATUS_CONNECTION_DISCONNECTED;
 919         case ETIMEDOUT:         return STATUS_IO_TIMEOUT;
 920         case ENETUNREACH:       return STATUS_NETWORK_UNREACHABLE;
 921         case EHOSTUNREACH:      return STATUS_HOST_UNREACHABLE;
 922         case ENETDOWN:          return STATUS_NETWORK_BUSY;
 923         case EPIPE:
 924         case ECONNRESET:        return STATUS_CONNECTION_RESET;
 925         case ECONNABORTED:      return STATUS_CONNECTION_ABORTED;
 926
 927         case 0:                 return STATUS_SUCCESS;
 928         default:
 929             errno = err;
 930             perror("wineserver: sock_get_ntstatus() can't map error");
 931             return STATUS_UNSUCCESSFUL;
 932     }
 933 }
 934
 935 #ifdef HAVE_LINUX_RTNETLINK_H
 936
 937 /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
 938 static struct object *ifchange_object;
 939
 940 static void ifchange_dump( struct object *obj, int verbose );
 941 static struct fd *ifchange_get_fd( struct object *obj );
 942 static void ifchange_destroy( struct object *obj );
 943
 944 static int ifchange_get_poll_events( struct fd *fd );
 945 static void ifchange_poll_event( struct fd *fd, int event );
 946
 947 struct ifchange
 948 {
 949     struct object       obj;     /* object header */
 950     struct fd          *fd;      /* interface change file descriptor */
 951     struct list         sockets; /* list of sockets to send interface change notifications */
 952 };
 953
 954 static const struct object_ops ifchange_ops =
 955 {
 956     sizeof(struct ifchange), /* size */
 957     ifchange_dump,           /* dump */
 958     no_get_type,             /* get_type */
 959     add_queue,               /* add_queue */
 960     NULL,                    /* remove_queue */
 961     NULL,                    /* signaled */
 962     no_satisfied,            /* satisfied */
 963     no_signal,               /* signal */
 964     ifchange_get_fd,         /* get_fd */
 965     default_fd_map_access,   /* map_access */
 966     default_get_sd,          /* get_sd */
 967     default_set_sd,          /* set_sd */
 968     no_lookup_name,          /* lookup_name */
 969     no_link_name,            /* link_name */
 970     NULL,                    /* unlink_name */
 971     no_open_file,            /* open_file */
 972     no_kernel_obj_list,      /* get_kernel_obj_list */
 973     no_close_handle,         /* close_handle */
 974     ifchange_destroy         /* destroy */
 975 };
 976
 977 static const struct fd_ops ifchange_fd_ops =
 978 {
 979     ifchange_get_poll_events, /* get_poll_events */
 980     ifchange_poll_event,      /* poll_event */
 981     NULL,                     /* get_fd_type */
 982     no_fd_read,               /* read */
 983     no_fd_write,              /* write */
 984     no_fd_flush,              /* flush */
 985     no_fd_get_file_info,      /* get_file_info */
 986     no_fd_get_volume_info,    /* get_volume_info */
 987     no_fd_ioctl,              /* ioctl */
 988     NULL,                     /* queue_async */
 989     NULL                      /* reselect_async */
 990 };
 991
 992 static void ifchange_dump( struct object *obj, int verbose )
 993 {
 994     assert( obj->ops == &ifchange_ops );
 995     fprintf( stderr, "Interface change\n" );
 996 }
 997
 998 static struct fd *ifchange_get_fd( struct object *obj )
 999 {
1000     struct ifchange *ifchange = (struct ifchange *)obj;
1001     return (struct fd *)grab_object( ifchange->fd );
1002 }
1003
1004 static void ifchange_destroy( struct object *obj )
1005 {
1006     struct ifchange *ifchange = (struct ifchange *)obj;
1007     assert( obj->ops == &ifchange_ops );
1008
1009     release_object( ifchange->fd );
1010
1011     /* reset the global ifchange object so that it will be recreated if it is needed again */
1012     assert( obj == ifchange_object );
1013     ifchange_object = NULL;
1014 }
1015
1016 static int ifchange_get_poll_events( struct fd *fd )
1017 {
1018     return POLLIN;
1019 }
1020
1021 /* wake up all the sockets waiting for a change notification event */
1022 static void ifchange_wake_up( struct object *obj, unsigned int status )
1023 {
1024     struct ifchange *ifchange = (struct ifchange *)obj;
1025     struct list *ptr, *next;
1026     assert( obj->ops == &ifchange_ops );
1027     assert( obj == ifchange_object );
1028
1029     LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
1030     {
1031         struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
1032
1033         assert( sock->ifchange_obj );
1034         async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
1035         sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
1036     }
1037 }
1038
1039 static void ifchange_poll_event( struct fd *fd, int event )
1040 {
1041     struct object *ifchange = get_fd_user( fd );
1042     unsigned int status = STATUS_PENDING;
1043     char buffer[PIPE_BUF];
1044     int r;
1045
1046     r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
1047     if (r < 0)
1048     {
1049         if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
1050             return;  /* retry when poll() says the socket is ready */
1051         status = sock_get_ntstatus( errno );
1052     }
1053     else if (r > 0)
1054     {
1055         struct nlmsghdr *nlh;
1056
1057         for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
1058         {
1059             if (nlh->nlmsg_type == NLMSG_DONE)
1060                 break;
1061             if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
1062                 status = STATUS_SUCCESS;
1063         }
1064     }
1065     else status = STATUS_CANCELLED;
1066
1067     if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
1068 }
1069
1070 #endif
1071
1072 /* we only need one of these interface notification objects, all of the sockets dependent upon
1073  * it will wake up when a notification event occurs */
1074  static struct object *get_ifchange( void )
1075  {
1076 #ifdef HAVE_LINUX_RTNETLINK_H
1077     struct ifchange *ifchange;
1078     struct sockaddr_nl addr;
1079     int unix_fd;
1080
1081     if (ifchange_object)
1082     {
1083         /* increment the refcount for each socket that uses the ifchange object */
1084         return grab_object( ifchange_object );
1085     }
1086
1087     /* create the socket we need for processing interface change notifications */
1088     unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
1089     if (unix_fd == -1)
1090     {
1091         set_win32_error( sock_get_error( errno ));
1092         return NULL;
1093     }
1094     fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
1095     memset( &addr, 0, sizeof(addr) );
1096     addr.nl_family = AF_NETLINK;
1097     addr.nl_groups = RTMGRP_IPV4_IFADDR;
1098     /* bind the socket to the special netlink kernel interface */
1099     if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
1100     {
1101         close( unix_fd );
1102         set_win32_error( sock_get_error( errno ));
1103         return NULL;
1104     }
1105     if (!(ifchange = alloc_object( &ifchange_ops )))
1106     {
1107         close( unix_fd );
1108         set_error( STATUS_NO_MEMORY );
1109         return NULL;
1110     }
1111     list_init( &ifchange->sockets );
1112     if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
1113     {
1114         release_object( ifchange );
1115         set_error( STATUS_NO_MEMORY );
1116         return NULL;
1117     }
1118     set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
1119
1120     /* the ifchange object is now successfully configured */
1121     ifchange_object = &ifchange->obj;
1122     return &ifchange->obj;
1123 #else
1124     set_error( STATUS_NOT_SUPPORTED );
1125     return NULL;
1126 #endif
1127 }
1128
1129 /* add the socket to the interface change notification list */
1130 static void ifchange_add_sock( struct object *obj, struct sock *sock )
1131 {
1132 #ifdef HAVE_LINUX_RTNETLINK_H
1133     struct ifchange *ifchange = (struct ifchange *)obj;
1134
1135     list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
1136 #endif
1137 }
1138
1139 /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
1140 static struct object *sock_get_ifchange( struct sock *sock )
1141 {
1142     struct object *ifchange;
1143
1144     if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
1145         return sock->ifchange_obj;
1146
1147     if (!(ifchange = get_ifchange()))
1148         return NULL;
1149
1150     /* add the socket to the ifchange notification list */
1151     ifchange_add_sock( ifchange, sock );
1152     sock->ifchange_obj = ifchange;
1153     return ifchange;
1154 }
1155
1156 /* destroy an existing ifchange queue for a specific socket */
1157 static void sock_release_ifchange( struct sock *sock )
1158 {
1159     if (sock->ifchange_obj)
1160     {
1161         list_remove( &sock->ifchange_entry );
1162         release_object( sock->ifchange_obj );
1163         sock->ifchange_obj = NULL;
1164     }
1165 }
1166
1167 /* create a socket */
1168 DECL_HANDLER(create_socket)
1169 {
1170     struct object *obj;
1171
1172     reply->handle = 0;
1173     if ((obj = create_socket( req->family, req->type, req->protocol, req->flags )) != NULL)
1174     {
1175         reply->handle = alloc_handle( current->process, obj, req->access, req->attributes );
1176         release_object( obj );
1177     }
1178 }
1179
1180 /* accept a socket */
1181 DECL_HANDLER(accept_socket)
1182 {
1183     struct sock *sock;
1184
1185     reply->handle = 0;
1186     if ((sock = accept_socket( req->lhandle )) != NULL)
1187     {
1188         reply->handle = alloc_handle( current->process, &sock->obj, req->access, req->attributes );
1189         sock->wparam = reply->handle;  /* wparam for message is the socket handle */
1190         sock_reselect( sock );
1191         release_object( &sock->obj );
1192     }
1193 }
1194
1195 /* accept a socket into an initialized socket */
1196 DECL_HANDLER(accept_into_socket)
1197 {
1198     struct sock *sock, *acceptsock;
1199     const int all_attributes = FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|FILE_READ_DATA;
1200
1201     if (!(sock = (struct sock *)get_handle_obj( current->process, req->lhandle,
1202                                                 all_attributes, &sock_ops)))
1203         return;
1204
1205     if (!(acceptsock = (struct sock *)get_handle_obj( current->process, req->ahandle,
1206                                                       all_attributes, &sock_ops)))
1207     {
1208         release_object( sock );
1209         return;
1210     }
1211
1212     if (accept_into_socket( sock, acceptsock ))
1213     {
1214         acceptsock->wparam = req->ahandle;  /* wparam for message is the socket handle */
1215         sock_reselect( acceptsock );
1216     }
1217     release_object( acceptsock );
1218     release_object( sock );
1219 }
1220
1221 /* set socket event parameters */
1222 DECL_HANDLER(set_socket_event)
1223 {
1224     struct sock *sock;
1225     struct event *old_event;
1226
1227     if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
1228                                                 FILE_WRITE_ATTRIBUTES, &sock_ops))) return;
1229     old_event = sock->event;
1230     sock->mask    = req->mask;
1231     sock->hmask   &= ~req->mask; /* re-enable held events */
1232     sock->event   = NULL;
1233     sock->window  = req->window;
1234     sock->message = req->msg;
1235     sock->wparam  = req->handle;  /* wparam is the socket handle */
1236     if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
1237
1238     if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
1239
1240     sock_reselect( sock );
1241
1242     sock->state |= FD_WINE_NONBLOCKING;
1243
1244     /* if a network event is pending, signal the event object
1245        it is possible that FD_CONNECT or FD_ACCEPT network events has happened
1246        before a WSAEventSelect() was done on it.
1247        (when dealing with Asynchronous socket)  */
1248     sock_wake_up( sock );
1249
1250     if (old_event) release_object( old_event ); /* we're through with it */
1251     release_object( &sock->obj );
1252 }
1253
1254 /* get socket event parameters */
1255 DECL_HANDLER(get_socket_event)
1256 {
1257     struct sock *sock;
1258
1259     if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
1260                                                 FILE_READ_ATTRIBUTES, &sock_ops ))) return;
1261     reply->mask  = sock->mask;
1262     reply->pmask = sock->pmask;
1263     reply->state = sock->state;
1264     set_reply_data( sock->errors, min( get_reply_max_size(), sizeof(sock->errors) ));
1265
1266     if (req->service)
1267     {
1268         if (req->c_event)
1269         {
1270             struct event *cevent = get_event_obj( current->process, req->c_event,
1271                                                   EVENT_MODIFY_STATE );
1272             if (cevent)
1273             {
1274                 reset_event( cevent );
1275                 release_object( cevent );
1276             }
1277         }
1278         sock->pmask = 0;
1279         sock_reselect( sock );
1280     }
1281     release_object( &sock->obj );
1282 }
1283
1284 /* re-enable pending socket events */
1285 DECL_HANDLER(enable_socket_event)
1286 {
1287     struct sock *sock;
1288
1289     if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
1290                                                FILE_WRITE_ATTRIBUTES, &sock_ops)))
1291         return;
1292
1293     /* for event-based notification, windows erases stale events */
1294     sock->pmask &= ~req->mask;
1295
1296     sock->hmask &= ~req->mask;
1297     sock->state |= req->sstate;
1298     sock->state &= ~req->cstate;
1299     if ( sock->type != SOCK_STREAM ) sock->state &= ~STREAM_FLAG_MASK;
1300
1301     sock_reselect( sock );
1302
1303     release_object( &sock->obj );
1304 }
1305
1306 DECL_HANDLER(set_socket_deferred)
1307 {
1308     struct sock *sock, *acceptsock;
1309
1310     sock=(struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops );
1311     if ( !sock )
1312         return;
1313
1314     acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops );
1315     if ( !acceptsock )
1316     {
1317         release_object( sock );
1318         return;
1319     }
1320     sock->deferred = acceptsock;
1321     release_object( sock );
1322 }
1323
1324 DECL_HANDLER(get_socket_info)
1325 {
1326     struct sock *sock;
1327
1328     sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
1329     if (!sock) return;
1330
1331     reply->family   = sock->family;
1332     reply->type     = sock->type;
1333     reply->protocol = sock->proto;
1334
1335     release_object( &sock->obj );
1336 }