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_SYS_ERRNO_H
  34 # include <sys/errno.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
  50 #include "ntstatus.h"
  51 #define WIN32_NO_STATUS
  52 #include "windef.h"
  53 #include "winternl.h"
  54 #include "winerror.h"
  55
  56 #include "process.h"
  57 #include "file.h"
  58 #include "handle.h"
  59 #include "thread.h"
  60 #include "request.h"
  61 #include "user.h"
  62
  63 /* From winsock.h */
  64 #define FD_MAX_EVENTS              10
  65 #define FD_READ_BIT                0
  66 #define FD_WRITE_BIT               1
  67 #define FD_OOB_BIT                 2
  68 #define FD_ACCEPT_BIT              3
  69 #define FD_CONNECT_BIT             4
  70 #define FD_CLOSE_BIT               5
  71
  72 /*
  73  * Define flags to be used with the WSAAsyncSelect() call.
  74  */
  75 #define FD_READ                    0x00000001
  76 #define FD_WRITE                   0x00000002
  77 #define FD_OOB                     0x00000004
  78 #define FD_ACCEPT                  0x00000008
  79 #define FD_CONNECT                 0x00000010
  80 #define FD_CLOSE                   0x00000020
  81
  82 /* internal per-socket flags */
  83 #define FD_WINE_LISTENING          0x10000000
  84 #define FD_WINE_NONBLOCKING        0x20000000
  85 #define FD_WINE_CONNECTED          0x40000000
  86 #define FD_WINE_RAW                0x80000000
  87 #define FD_WINE_INTERNAL           0xFFFF0000
  88
  89 /* Constants for WSAIoctl() */
  90 #define WSA_FLAG_OVERLAPPED        0x01
  91
  92 struct sock
  93 {
  94     struct object       obj;         /* object header */
  95     struct fd          *fd;          /* socket file descriptor */
  96     unsigned int        state;       /* status bits */
  97     unsigned int        mask;        /* event mask */
  98     unsigned int        hmask;       /* held (blocked) events */
  99     unsigned int        pmask;       /* pending events */
 100     unsigned int        flags;       /* socket flags */
 101     int                 polling;     /* is socket being polled? */
 102     unsigned short      type;        /* socket type */
 103     unsigned short      family;      /* socket family */
 104     struct event       *event;       /* event object */
 105     user_handle_t       window;      /* window to send the message to */
 106     unsigned int        message;     /* message to send */
 107     obj_handle_t        wparam;      /* message wparam (socket handle) */
 108     int                 errors[FD_MAX_EVENTS]; /* event errors */
 109     struct sock        *deferred;    /* socket that waits for a deferred accept */
 110     struct async_queue *read_q;      /* queue for asynchronous reads */
 111     struct async_queue *write_q;     /* queue for asynchronous writes */
 112 };
 113
 114 static void sock_dump( struct object *obj, int verbose );
 115 static int sock_signaled( struct object *obj, struct thread *thread );
 116 static struct fd *sock_get_fd( struct object *obj );
 117 static void sock_destroy( struct object *obj );
 118
 119 static int sock_get_poll_events( struct fd *fd );
 120 static void sock_poll_event( struct fd *fd, int event );
 121 static enum server_fd_type sock_get_fd_type( struct fd *fd );
 122 static void sock_queue_async( struct fd *fd, const async_data_t *data, int type, int count );
 123 static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
 124 static void sock_cancel_async( struct fd *fd, struct process *process, struct thread *thread, client_ptr_t iosb );
 125
 126 static int sock_get_ntstatus( int err );
 127 static int sock_get_error( int err );
 128 static void sock_set_error(void);
 129
 130 static const struct object_ops sock_ops =
 131 {
 132     sizeof(struct sock),          /* size */
 133     sock_dump,                    /* dump */
 134     no_get_type,                  /* get_type */
 135     add_queue,                    /* add_queue */
 136     remove_queue,                 /* remove_queue */
 137     sock_signaled,                /* signaled */
 138     no_satisfied,                 /* satisfied */
 139     no_signal,                    /* signal */
 140     sock_get_fd,                  /* get_fd */
 141     default_fd_map_access,        /* map_access */
 142     default_get_sd,               /* get_sd */
 143     default_set_sd,               /* set_sd */
 144     no_lookup_name,               /* lookup_name */
 145     no_open_file,                 /* open_file */
 146     fd_close_handle,              /* close_handle */
 147     sock_destroy                  /* destroy */
 148 };
 149
 150 static const struct fd_ops sock_fd_ops =
 151 {
 152     sock_get_poll_events,         /* get_poll_events */
 153     sock_poll_event,              /* poll_event */
 154     no_flush,                     /* flush */
 155     sock_get_fd_type,             /* get_file_info */
 156     default_fd_ioctl,             /* ioctl */
 157     sock_queue_async,             /* queue_async */
 158     sock_reselect_async,          /* reselect_async */
 159     sock_cancel_async             /* cancel_async */
 160 };
 161
 162
 163 /* Permutation of 0..FD_MAX_EVENTS - 1 representing the order in which
 164  * we post messages if there are multiple events.  Used to send
 165  * messages.  The problem is if there is both a FD_CONNECT event and,
 166  * say, an FD_READ event available on the same socket, we want to
 167  * notify the app of the connect event first.  Otherwise it may
 168  * discard the read event because it thinks it hasn't connected yet.
 169  */
 170 static const int event_bitorder[FD_MAX_EVENTS] =
 171 {
 172     FD_CONNECT_BIT,
 173     FD_ACCEPT_BIT,
 174     FD_OOB_BIT,
 175     FD_WRITE_BIT,
 176     FD_READ_BIT,
 177     FD_CLOSE_BIT,
 178     6, 7, 8, 9  /* leftovers */
 179 };
 180
 181 /* Flags that make sense only for SOCK_STREAM sockets */
 182 #define STREAM_FLAG_MASK ((unsigned int) (FD_CONNECT | FD_ACCEPT | FD_WINE_LISTENING | FD_WINE_CONNECTED))
 183
 184 typedef enum {
 185     SOCK_SHUTDOWN_ERROR = -1,
 186     SOCK_SHUTDOWN_EOF = 0,
 187     SOCK_SHUTDOWN_POLLHUP = 1
 188 } sock_shutdown_t;
 189
 190 static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
 191
 192 static sock_shutdown_t sock_check_pollhup(void)
 193 {
 194     sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
 195     int fd[2], n;
 196     struct pollfd pfd;
 197     char dummy;
 198
 199     if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) goto out;
 200     if ( shutdown( fd[0], 1 ) ) goto out;
 201
 202     pfd.fd = fd[1];
 203     pfd.events = POLLIN;
 204     pfd.revents = 0;
 205
 206     n = poll( &pfd, 1, 0 );
 207     if ( n != 1 ) goto out; /* error or timeout */
 208     if ( pfd.revents & POLLHUP )
 209         ret = SOCK_SHUTDOWN_POLLHUP;
 210     else if ( pfd.revents & POLLIN &&
 211               read( fd[1], &dummy, 1 ) == 0 )
 212         ret = SOCK_SHUTDOWN_EOF;
 213
 214 out:
 215     close( fd[0] );
 216     close( fd[1] );
 217     return ret;
 218 }
 219
 220 void sock_init(void)
 221 {
 222     sock_shutdown_type = sock_check_pollhup();
 223
 224     switch ( sock_shutdown_type )
 225     {
 226     case SOCK_SHUTDOWN_EOF:
 227         if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
 228         break;
 229     case SOCK_SHUTDOWN_POLLHUP:
 230         if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
 231         break;
 232     default:
 233         fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
 234         sock_shutdown_type = SOCK_SHUTDOWN_EOF;
 235     }
 236 }
 237
 238 static int sock_reselect( struct sock *sock )
 239 {
 240     int ev = sock_get_poll_events( sock->fd );
 241
 242     if (debug_level)
 243         fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
 244
 245     if (!sock->polling)  /* FIXME: should find a better way to do this */
 246     {
 247         /* previously unconnected socket, is this reselect supposed to connect it? */
 248         if (!(sock->state & ~FD_WINE_NONBLOCKING)) return 0;
 249         /* ok, it is, attach it to the wineserver's main poll loop */
 250         sock->polling = 1;
 251     }
 252     /* update condition mask */
 253     set_fd_events( sock->fd, ev );
 254     return ev;
 255 }
 256
 257 /* After POLLHUP is received, the socket will no longer be in the main select loop.
 258    This function is used to signal pending events nevertheless */
 259 static void sock_try_event( struct sock *sock, int event )
 260 {
 261     event = check_fd_events( sock->fd, event );
 262     if (event)
 263     {
 264         if ( debug_level ) fprintf( stderr, "sock_try_event: %x\n", event );
 265         sock_poll_event( sock->fd, event );
 266     }
 267 }
 268
 269 /* wake anybody waiting on the socket event or send the associated message */
 270 static void sock_wake_up( struct sock *sock, int pollev )
 271 {
 272     unsigned int events = sock->pmask & sock->mask;
 273     int i;
 274     int async_active = 0;
 275
 276     if ( pollev & (POLLIN|POLLPRI|POLLERR|POLLHUP) && async_waiting( sock->read_q ))
 277     {
 278         if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
 279         async_wake_up( sock->read_q, STATUS_ALERTED );
 280         async_active = 1;
 281     }
 282     if ( pollev & (POLLOUT|POLLERR|POLLHUP) && async_waiting( sock->write_q ))
 283     {
 284         if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
 285         async_wake_up( sock->write_q, STATUS_ALERTED );
 286         async_active = 1;
 287     }
 288
 289     /* Do not signal events if there are still pending asynchronous IO requests */
 290     /* We need this to delay FD_CLOSE events until all pending overlapped requests are processed */
 291     if ( !events || async_active ) return;
 292
 293     if (sock->event)
 294     {
 295         if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
 296         set_event( sock->event );
 297     }
 298     if (sock->window)
 299     {
 300         if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
 301         for (i = 0; i < FD_MAX_EVENTS; i++)
 302         {
 303             int event = event_bitorder[i];
 304             if (sock->pmask & (1 << event))
 305             {
 306                 lparam_t lparam = (1 << event) | (sock_get_error(sock->errors[event]) << 16);
 307                 post_message( sock->window, sock->message, sock->wparam, lparam );
 308             }
 309         }
 310         sock->pmask = 0;
 311         sock_reselect( sock );
 312     }
 313 }
 314
 315 static inline int sock_error( struct fd *fd )
 316 {
 317     unsigned int optval = 0, optlen;
 318
 319     optlen = sizeof(optval);
 320     getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
 321     return optval;
 322 }
 323
 324 static void sock_poll_event( struct fd *fd, int event )
 325 {
 326     struct sock *sock = get_fd_user( fd );
 327     int hangup_seen = 0;
 328
 329     assert( sock->obj.ops == &sock_ops );
 330     if (debug_level)
 331         fprintf(stderr, "socket %p select event: %x\n", sock, event);
 332     if (sock->state & FD_CONNECT)
 333     {
 334         /* connecting */
 335         if (event & POLLOUT)
 336         {
 337             /* we got connected */
 338             sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 339             sock->state &= ~FD_CONNECT;
 340             sock->pmask |= FD_CONNECT;
 341             sock->errors[FD_CONNECT_BIT] = 0;
 342             if (debug_level)
 343                 fprintf(stderr, "socket %p connection success\n", sock);
 344         }
 345         else if (event & (POLLERR|POLLHUP))
 346         {
 347             /* we didn't get connected? */
 348             sock->state &= ~FD_CONNECT;
 349             sock->pmask |= FD_CONNECT;
 350             sock->errors[FD_CONNECT_BIT] = sock_error( fd );
 351             if (debug_level)
 352                 fprintf(stderr, "socket %p connection failure\n", sock);
 353         }
 354     }
 355     else if (sock->state & FD_WINE_LISTENING)
 356     {
 357         /* listening */
 358         if (event & POLLIN)
 359         {
 360             /* incoming connection */
 361             sock->pmask |= FD_ACCEPT;
 362             sock->errors[FD_ACCEPT_BIT] = 0;
 363             sock->hmask |= FD_ACCEPT;
 364         }
 365         else if (event & (POLLERR|POLLHUP))
 366         {
 367             /* failed incoming connection? */
 368             sock->pmask |= FD_ACCEPT;
 369             sock->errors[FD_ACCEPT_BIT] = sock_error( fd );
 370             sock->hmask |= FD_ACCEPT;
 371         }
 372     }
 373     else
 374     {
 375         /* normal data flow */
 376         if ( sock->type == SOCK_STREAM && ( event & POLLIN ) )
 377         {
 378             char dummy;
 379             int nr;
 380
 381             /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
 382              * has been closed, so we need to check for it explicitly here */
 383             nr  = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
 384             if ( nr > 0 )
 385             {
 386                 /* incoming data */
 387                 sock->pmask |= FD_READ;
 388                 sock->hmask |= (FD_READ|FD_CLOSE);
 389                 sock->errors[FD_READ_BIT] = 0;
 390                 if (debug_level)
 391                     fprintf(stderr, "socket %p is readable\n", sock );
 392             }
 393             else if ( nr == 0 )
 394                 hangup_seen = 1;
 395             else
 396             {
 397                 /* EAGAIN can happen if an async recv() falls between the server's poll()
 398                    call and the invocation of this routine */
 399                 if ( errno == EAGAIN )
 400                     event &= ~POLLIN;
 401                 else
 402                 {
 403                     if ( debug_level )
 404                         fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
 405                     event = POLLERR;
 406                 }
 407             }
 408
 409         }
 410         else if ( sock_shutdown_type == SOCK_SHUTDOWN_POLLHUP && (event & POLLHUP) )
 411         {
 412             hangup_seen = 1;
 413         }
 414         else if ( event & POLLIN ) /* POLLIN for non-stream socket */
 415         {
 416             sock->pmask |= FD_READ;
 417             sock->hmask |= (FD_READ|FD_CLOSE);
 418             sock->errors[FD_READ_BIT] = 0;
 419             if (debug_level)
 420                 fprintf(stderr, "socket %p is readable\n", sock );
 421
 422         }
 423
 424         if (event & POLLOUT)
 425         {
 426             sock->pmask |= FD_WRITE;
 427             sock->hmask |= FD_WRITE;
 428             sock->errors[FD_WRITE_BIT] = 0;
 429             if (debug_level)
 430                 fprintf(stderr, "socket %p is writable\n", sock);
 431         }
 432         if (event & POLLPRI)
 433         {
 434             sock->pmask |= FD_OOB;
 435             sock->hmask |= FD_OOB;
 436             sock->errors[FD_OOB_BIT] = 0;
 437             if (debug_level)
 438                 fprintf(stderr, "socket %p got OOB data\n", sock);
 439         }
 440         /* According to WS2 specs, FD_CLOSE is only delivered when there is
 441            no more data to be read (i.e. hangup_seen = 1) */
 442         else if ( hangup_seen && (sock->state & (FD_READ|FD_WRITE) ))
 443         {
 444             sock->errors[FD_CLOSE_BIT] = sock_error( fd );
 445             if ( (event & POLLERR) || ( sock_shutdown_type == SOCK_SHUTDOWN_EOF && (event & POLLHUP) ))
 446                 sock->state &= ~FD_WRITE;
 447             sock->pmask |= FD_CLOSE;
 448             sock->hmask |= FD_CLOSE;
 449             if (debug_level)
 450                 fprintf(stderr, "socket %p aborted by error %d, event: %x - removing from select loop\n",
 451                         sock, sock->errors[FD_CLOSE_BIT], event);
 452         }
 453     }
 454
 455     if ( sock->pmask & FD_CLOSE || event & (POLLERR|POLLHUP) )
 456     {
 457         if ( debug_level )
 458             fprintf( stderr, "removing socket %p from select loop\n", sock );
 459         set_fd_events( sock->fd, -1 );
 460     }
 461     else
 462         sock_reselect( sock );
 463
 464     /* wake up anyone waiting for whatever just happened */
 465     if ( sock->pmask & sock->mask || sock->flags & WSA_FLAG_OVERLAPPED ) sock_wake_up( sock, event );
 466
 467     /* if anyone is stupid enough to wait on the socket object itself,
 468      * maybe we should wake them up too, just in case? */
 469     wake_up( &sock->obj, 0 );
 470 }
 471
 472 static void sock_dump( struct object *obj, int verbose )
 473 {
 474     struct sock *sock = (struct sock *)obj;
 475     assert( obj->ops == &sock_ops );
 476     printf( "Socket fd=%p, state=%x, mask=%x, pending=%x, held=%x\n",
 477             sock->fd, sock->state,
 478             sock->mask, sock->pmask, sock->hmask );
 479 }
 480
 481 static int sock_signaled( struct object *obj, struct thread *thread )
 482 {
 483     struct sock *sock = (struct sock *)obj;
 484     assert( obj->ops == &sock_ops );
 485
 486     return check_fd_events( sock->fd, sock_get_poll_events( sock->fd ) ) != 0;
 487 }
 488
 489 static int sock_get_poll_events( struct fd *fd )
 490 {
 491     struct sock *sock = get_fd_user( fd );
 492     unsigned int mask = sock->mask & sock->state & ~sock->hmask;
 493     int ev = 0;
 494
 495     assert( sock->obj.ops == &sock_ops );
 496
 497     if (sock->state & FD_CONNECT)
 498         /* connecting, wait for writable */
 499         return POLLOUT;
 500     if (sock->state & FD_WINE_LISTENING)
 501         /* listening, wait for readable */
 502         return (sock->hmask & FD_ACCEPT) ? 0 : POLLIN;
 503
 504     if (mask & FD_READ  || async_waiting( sock->read_q )) ev |= POLLIN | POLLPRI;
 505     if (mask & FD_WRITE || async_waiting( sock->write_q )) ev |= POLLOUT;
 506     /* We use POLLIN with 0 bytes recv() as FD_CLOSE indication for stream sockets. */
 507     if ( sock->type == SOCK_STREAM && ( sock->mask & ~sock->hmask & FD_CLOSE) )
 508         ev |= POLLIN;
 509
 510     return ev;
 511 }
 512
 513 static enum server_fd_type sock_get_fd_type( struct fd *fd )
 514 {
 515     return FD_TYPE_SOCKET;
 516 }
 517
 518 static void sock_queue_async( struct fd *fd, const async_data_t *data, int type, int count )
 519 {
 520     struct sock *sock = get_fd_user( fd );
 521     struct async_queue *queue;
 522     int pollev;
 523
 524     assert( sock->obj.ops == &sock_ops );
 525
 526     switch (type)
 527     {
 528     case ASYNC_TYPE_READ:
 529         if (!sock->read_q && !(sock->read_q = create_async_queue( sock->fd ))) return;
 530         queue = sock->read_q;
 531         sock->hmask &= ~FD_CLOSE;
 532         break;
 533     case ASYNC_TYPE_WRITE:
 534         if (!sock->write_q && !(sock->write_q = create_async_queue( sock->fd ))) return;
 535         queue = sock->write_q;
 536         break;
 537     default:
 538         set_error( STATUS_INVALID_PARAMETER );
 539         return;
 540     }
 541
 542     if ( ( !( sock->state & FD_READ ) && type == ASYNC_TYPE_READ  ) ||
 543          ( !( sock->state & FD_WRITE ) && type == ASYNC_TYPE_WRITE ) )
 544     {
 545         set_error( STATUS_PIPE_DISCONNECTED );
 546     }
 547     else
 548     {
 549         struct async *async;
 550         if (!(async = create_async( current, queue, data ))) return;
 551         release_object( async );
 552         set_error( STATUS_PENDING );
 553     }
 554
 555     pollev = sock_reselect( sock );
 556     if ( pollev ) sock_try_event( sock, pollev );
 557 }
 558
 559 static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
 560 {
 561     struct sock *sock = get_fd_user( fd );
 562     int events = sock_reselect( sock );
 563     if (events) sock_try_event( sock, events );
 564 }
 565
 566 static void sock_cancel_async( struct fd *fd, struct process *process, struct thread *thread, client_ptr_t iosb )
 567 {
 568     struct sock *sock = get_fd_user( fd );
 569     int n = 0;
 570     assert( sock->obj.ops == &sock_ops );
 571
 572     n += async_wake_up_by( sock->read_q, process, thread, iosb, STATUS_CANCELLED );
 573     n += async_wake_up_by( sock->write_q, process, thread, iosb, STATUS_CANCELLED );
 574     if (!n && iosb)
 575         set_error( STATUS_NOT_FOUND );
 576 }
 577
 578 static struct fd *sock_get_fd( struct object *obj )
 579 {
 580     struct sock *sock = (struct sock *)obj;
 581     return (struct fd *)grab_object( sock->fd );
 582 }
 583
 584 static void sock_destroy( struct object *obj )
 585 {
 586     struct sock *sock = (struct sock *)obj;
 587     assert( obj->ops == &sock_ops );
 588
 589     /* FIXME: special socket shutdown stuff? */
 590
 591     if ( sock->deferred )
 592         release_object( sock->deferred );
 593
 594     free_async_queue( sock->read_q );
 595     free_async_queue( sock->write_q );
 596     if (sock->event) release_object( sock->event );
 597     if (sock->fd)
 598     {
 599         /* shut the socket down to force pending poll() calls in the client to return */
 600         shutdown( get_unix_fd(sock->fd), SHUT_RDWR );
 601         release_object( sock->fd );
 602     }
 603 }
 604
 605 /* create a new and unconnected socket */
 606 static struct object *create_socket( int family, int type, int protocol, unsigned int flags )
 607 {
 608     struct sock *sock;
 609     int sockfd;
 610
 611     sockfd = socket( family, type, protocol );
 612     if (debug_level)
 613         fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
 614     if (sockfd == -1)
 615     {
 616         sock_set_error();
 617         return NULL;
 618     }
 619     fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 620     if (!(sock = alloc_object( &sock_ops )))
 621     {
 622         close( sockfd );
 623         return NULL;
 624     }
 625     sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
 626     sock->mask    = 0;
 627     sock->hmask   = 0;
 628     sock->pmask   = 0;
 629     sock->polling = 0;
 630     sock->flags   = flags;
 631     sock->type    = type;
 632     sock->family  = family;
 633     sock->event   = NULL;
 634     sock->window  = 0;
 635     sock->message = 0;
 636     sock->wparam  = 0;
 637     sock->deferred = NULL;
 638     sock->read_q  = NULL;
 639     sock->write_q = NULL;
 640     memset( sock->errors, 0, sizeof(sock->errors) );
 641     if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj,
 642                             (flags & WSA_FLAG_OVERLAPPED) ? 0 : FILE_SYNCHRONOUS_IO_NONALERT )))
 643     {
 644         release_object( sock );
 645         return NULL;
 646     }
 647     sock_reselect( sock );
 648     clear_error();
 649     return &sock->obj;
 650 }
 651
 652 /* accept a socket (creates a new fd) */
 653 static struct sock *accept_socket( obj_handle_t handle )
 654 {
 655     struct sock *acceptsock;
 656     struct sock *sock;
 657     int acceptfd;
 658     struct sockaddr     saddr;
 659
 660     sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
 661     if (!sock)
 662         return NULL;
 663
 664     if ( sock->deferred )
 665     {
 666         acceptsock = sock->deferred;
 667         sock->deferred = NULL;
 668     }
 669     else
 670     {
 671
 672         /* Try to accept(2). We can't be safe that this an already connected socket
 673          * or that accept() is allowed on it. In those cases we will get -1/errno
 674          * return.
 675          */
 676         unsigned int slen = sizeof(saddr);
 677         acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen);
 678         if (acceptfd==-1)
 679         {
 680             sock_set_error();
 681             release_object( sock );
 682             return NULL;
 683         }
 684         if (!(acceptsock = alloc_object( &sock_ops )))
 685         {
 686             close( acceptfd );
 687             release_object( sock );
 688             return NULL;
 689         }
 690
 691         /* newly created socket gets the same properties of the listening socket */
 692         fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 693         acceptsock->state  = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 694         if (sock->state & FD_WINE_NONBLOCKING)
 695             acceptsock->state |= FD_WINE_NONBLOCKING;
 696         acceptsock->mask    = sock->mask;
 697         acceptsock->hmask   = 0;
 698         acceptsock->pmask   = 0;
 699         acceptsock->polling = 0;
 700         acceptsock->type    = sock->type;
 701         acceptsock->family  = sock->family;
 702         acceptsock->event   = NULL;
 703         acceptsock->window  = sock->window;
 704         acceptsock->message = sock->message;
 705         acceptsock->wparam  = 0;
 706         if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
 707         acceptsock->flags = sock->flags;
 708         acceptsock->deferred = NULL;
 709         acceptsock->read_q  = NULL;
 710         acceptsock->write_q = NULL;
 711         memset( acceptsock->errors, 0, sizeof(acceptsock->errors) );
 712         if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
 713                                                     get_fd_options( sock->fd ) )))
 714         {
 715             release_object( acceptsock );
 716             release_object( sock );
 717             return NULL;
 718         }
 719     }
 720     clear_error();
 721     sock->pmask &= ~FD_ACCEPT;
 722     sock->hmask &= ~FD_ACCEPT;
 723     sock_reselect( sock );
 724     release_object( sock );
 725     return acceptsock;
 726 }
 727
 728 /* set the last error depending on errno */
 729 static int sock_get_error( int err )
 730 {
 731     switch (err)
 732     {
 733         case EINTR:             return WSAEINTR;
 734         case EBADF:             return WSAEBADF;
 735         case EPERM:
 736         case EACCES:            return WSAEACCES;
 737         case EFAULT:            return WSAEFAULT;
 738         case EINVAL:            return WSAEINVAL;
 739         case EMFILE:            return WSAEMFILE;
 740         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 741         case EINPROGRESS:       return WSAEINPROGRESS;
 742         case EALREADY:          return WSAEALREADY;
 743         case ENOTSOCK:          return WSAENOTSOCK;
 744         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 745         case EMSGSIZE:          return WSAEMSGSIZE;
 746         case EPROTOTYPE:        return WSAEPROTOTYPE;
 747         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 748         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 749         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 750         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 751         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 752         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 753         case EADDRINUSE:        return WSAEADDRINUSE;
 754         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 755         case ENETDOWN:          return WSAENETDOWN;
 756         case ENETUNREACH:       return WSAENETUNREACH;
 757         case ENETRESET:         return WSAENETRESET;
 758         case ECONNABORTED:      return WSAECONNABORTED;
 759         case EPIPE:
 760         case ECONNRESET:        return WSAECONNRESET;
 761         case ENOBUFS:           return WSAENOBUFS;
 762         case EISCONN:           return WSAEISCONN;
 763         case ENOTCONN:          return WSAENOTCONN;
 764         case ESHUTDOWN:         return WSAESHUTDOWN;
 765         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 766         case ETIMEDOUT:         return WSAETIMEDOUT;
 767         case ECONNREFUSED:      return WSAECONNREFUSED;
 768         case ELOOP:             return WSAELOOP;
 769         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 770         case EHOSTDOWN:         return WSAEHOSTDOWN;
 771         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 772         case ENOTEMPTY:         return WSAENOTEMPTY;
 773 #ifdef EPROCLIM
 774         case EPROCLIM:          return WSAEPROCLIM;
 775 #endif
 776 #ifdef EUSERS
 777         case EUSERS:            return WSAEUSERS;
 778 #endif
 779 #ifdef EDQUOT
 780         case EDQUOT:            return WSAEDQUOT;
 781 #endif
 782 #ifdef ESTALE
 783         case ESTALE:            return WSAESTALE;
 784 #endif
 785 #ifdef EREMOTE
 786         case EREMOTE:           return WSAEREMOTE;
 787 #endif
 788
 789         case 0:                 return 0;
 790         default:
 791             errno = err;
 792             perror("wineserver: sock_get_error() can't map error");
 793             return WSAEFAULT;
 794     }
 795 }
 796
 797 static int sock_get_ntstatus( int err )
 798 {
 799     switch ( err )
 800     {
 801         case EBADF:             return STATUS_INVALID_HANDLE;
 802         case EBUSY:             return STATUS_DEVICE_BUSY;
 803         case EPERM:
 804         case EACCES:            return STATUS_ACCESS_DENIED;
 805         case EFAULT:            return STATUS_NO_MEMORY;
 806         case EINVAL:            return STATUS_INVALID_PARAMETER;
 807         case ENFILE:
 808         case EMFILE:            return STATUS_TOO_MANY_OPENED_FILES;
 809         case EWOULDBLOCK:       return STATUS_CANT_WAIT;
 810         case EINPROGRESS:       return STATUS_PENDING;
 811         case EALREADY:          return STATUS_NETWORK_BUSY;
 812         case ENOTSOCK:          return STATUS_OBJECT_TYPE_MISMATCH;
 813         case EDESTADDRREQ:      return STATUS_INVALID_PARAMETER;
 814         case EMSGSIZE:          return STATUS_BUFFER_OVERFLOW;
 815         case EPROTONOSUPPORT:
 816         case ESOCKTNOSUPPORT:
 817         case EPFNOSUPPORT:
 818         case EAFNOSUPPORT:
 819         case EPROTOTYPE:        return STATUS_NOT_SUPPORTED;
 820         case ENOPROTOOPT:       return STATUS_INVALID_PARAMETER;
 821         case EOPNOTSUPP:        return STATUS_NOT_SUPPORTED;
 822         case EADDRINUSE:        return STATUS_ADDRESS_ALREADY_ASSOCIATED;
 823         case EADDRNOTAVAIL:     return STATUS_INVALID_PARAMETER;
 824         case ECONNREFUSED:      return STATUS_CONNECTION_REFUSED;
 825         case ESHUTDOWN:         return STATUS_PIPE_DISCONNECTED;
 826         case ENOTCONN:          return STATUS_CONNECTION_DISCONNECTED;
 827         case ETIMEDOUT:         return STATUS_IO_TIMEOUT;
 828         case ENETUNREACH:       return STATUS_NETWORK_UNREACHABLE;
 829         case ENETDOWN:          return STATUS_NETWORK_BUSY;
 830         case EPIPE:
 831         case ECONNRESET:        return STATUS_CONNECTION_RESET;
 832         case ECONNABORTED:      return STATUS_CONNECTION_ABORTED;
 833
 834         case 0:                 return STATUS_SUCCESS;
 835         default:
 836             errno = err;
 837             perror("wineserver: sock_get_ntstatus() can't map error");
 838             return STATUS_UNSUCCESSFUL;
 839     }
 840 }
 841
 842 /* set the last error depending on errno */
 843 static void sock_set_error(void)
 844 {
 845     set_error( sock_get_ntstatus( errno ) );
 846 }
 847
 848 /* create a socket */
 849 DECL_HANDLER(create_socket)
 850 {
 851     struct object *obj;
 852
 853     reply->handle = 0;
 854     if ((obj = create_socket( req->family, req->type, req->protocol, req->flags )) != NULL)
 855     {
 856         reply->handle = alloc_handle( current->process, obj, req->access, req->attributes );
 857         release_object( obj );
 858     }
 859 }
 860
 861 /* accept a socket */
 862 DECL_HANDLER(accept_socket)
 863 {
 864     struct sock *sock;
 865
 866     reply->handle = 0;
 867     if ((sock = accept_socket( req->lhandle )) != NULL)
 868     {
 869         reply->handle = alloc_handle( current->process, &sock->obj, req->access, req->attributes );
 870         sock->wparam = reply->handle;  /* wparam for message is the socket handle */
 871         sock_reselect( sock );
 872         release_object( &sock->obj );
 873     }
 874 }
 875
 876 /* set socket event parameters */
 877 DECL_HANDLER(set_socket_event)
 878 {
 879     struct sock *sock;
 880     struct event *old_event;
 881     int pollev;
 882
 883     if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
 884                                                 FILE_WRITE_ATTRIBUTES, &sock_ops))) return;
 885     old_event = sock->event;
 886     sock->mask    = req->mask;
 887     sock->hmask   &= ~req->mask; /* re-enable held events */
 888     sock->event   = NULL;
 889     sock->window  = req->window;
 890     sock->message = req->msg;
 891     sock->wparam  = req->handle;  /* wparam is the socket handle */
 892     if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
 893
 894     if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
 895
 896     pollev = sock_reselect( sock );
 897     if ( pollev ) sock_try_event( sock, pollev );
 898
 899     if (sock->mask)
 900         sock->state |= FD_WINE_NONBLOCKING;
 901
 902     /* if a network event is pending, signal the event object
 903        it is possible that FD_CONNECT or FD_ACCEPT network events has happened
 904        before a WSAEventSelect() was done on it.
 905        (when dealing with Asynchronous socket)  */
 906     if (sock->pmask & sock->mask) sock_wake_up( sock, pollev );
 907
 908     if (old_event) release_object( old_event ); /* we're through with it */
 909     release_object( &sock->obj );
 910 }
 911
 912 /* get socket event parameters */
 913 DECL_HANDLER(get_socket_event)
 914 {
 915     struct sock *sock;
 916     int i;
 917     int errors[FD_MAX_EVENTS];
 918
 919     sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
 920     if (!sock)
 921     {
 922         reply->mask  = 0;
 923         reply->pmask = 0;
 924         reply->state = 0;
 925         return;
 926     }
 927     reply->mask  = sock->mask;
 928     reply->pmask = sock->pmask;
 929     reply->state = sock->state;
 930     for (i = 0; i < FD_MAX_EVENTS; i++)
 931         errors[i] = sock_get_ntstatus(sock->errors[i]);
 932
 933     set_reply_data( errors, min( get_reply_max_size(), sizeof(errors) ));
 934
 935     if (req->service)
 936     {
 937         if (req->c_event)
 938         {
 939             struct event *cevent = get_event_obj( current->process, req->c_event,
 940                                                   EVENT_MODIFY_STATE );
 941             if (cevent)
 942             {
 943                 reset_event( cevent );
 944                 release_object( cevent );
 945             }
 946         }
 947         sock->pmask = 0;
 948         sock_reselect( sock );
 949     }
 950     release_object( &sock->obj );
 951 }
 952
 953 /* re-enable pending socket events */
 954 DECL_HANDLER(enable_socket_event)
 955 {
 956     struct sock *sock;
 957     int pollev;
 958
 959     if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
 960                                                FILE_WRITE_ATTRIBUTES, &sock_ops)))
 961         return;
 962
 963     sock->pmask &= ~req->mask; /* is this safe? */
 964     sock->hmask &= ~req->mask;
 965     if ( req->mask & FD_READ )
 966         sock->hmask &= ~FD_CLOSE;
 967     sock->state |= req->sstate;
 968     sock->state &= ~req->cstate;
 969     if ( sock->type != SOCK_STREAM ) sock->state &= ~STREAM_FLAG_MASK;
 970
 971     pollev = sock_reselect( sock );
 972     if ( pollev ) sock_try_event( sock, pollev );
 973
 974     release_object( &sock->obj );
 975 }
 976
 977 DECL_HANDLER(set_socket_deferred)
 978 {
 979     struct sock *sock, *acceptsock;
 980
 981     sock=(struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops );
 982     if ( !sock )
 983         return;
 984
 985     acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops );
 986     if ( !acceptsock )
 987     {
 988         release_object( sock );
 989         return;
 990     }
 991     sock->deferred = acceptsock;
 992     release_object( sock );
 993 }