git.oblomov.eu Git - wine/blob - server/process.c

   1 /*
   2  * Server-side process management
   3  *
   4  * Copyright (C) 1998 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <assert.h>
  10 #include <errno.h>
  11 #include <limits.h>
  12 #include <signal.h>
  13 #include <string.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <sys/time.h>
  17 #ifdef HAVE_SYS_SOCKET_H
  18 # include <sys/socket.h>
  19 #endif
  20 #include <unistd.h>
  21
  22 #include "winbase.h"
  23 #include "winnt.h"
  24
  25 #include "handle.h"
  26 #include "process.h"
  27 #include "thread.h"
  28 #include "request.h"
  29
  30 /* process structure */
  31
  32 static struct process *first_process;
  33 static int running_processes;
  34
  35 /* process operations */
  36
  37 static void process_dump( struct object *obj, int verbose );
  38 static int process_signaled( struct object *obj, struct thread *thread );
  39 static void process_destroy( struct object *obj );
  40
  41 static const struct object_ops process_ops =
  42 {
  43     sizeof(struct process),      /* size */
  44     process_dump,                /* dump */
  45     add_queue,                   /* add_queue */
  46     remove_queue,                /* remove_queue */
  47     process_signaled,            /* signaled */
  48     no_satisfied,                /* satisfied */
  49     NULL,                        /* get_poll_events */
  50     NULL,                        /* poll_event */
  51     no_read_fd,                  /* get_read_fd */
  52     no_write_fd,                 /* get_write_fd */
  53     no_flush,                    /* flush */
  54     no_get_file_info,            /* get_file_info */
  55     process_destroy              /* destroy */
  56 };
  57
  58 /* set the process creation info */
  59 static int set_creation_info( struct process *process, struct new_process_request *req,
  60                               const char *cmd_line, size_t len )
  61 {
  62     if (!(process->info = mem_alloc( sizeof(*process->info) + len ))) return 0;
  63     if (req)
  64     {
  65         /* copy the request structure */
  66         memcpy( process->info, req, sizeof(*req) );
  67     }
  68     else  /* no request, use defaults */
  69     {
  70         req = process->info;
  71         req->inherit      = 0;
  72         req->inherit_all  = 0;
  73         req->create_flags = CREATE_NEW_CONSOLE;
  74         req->start_flags  = STARTF_USESTDHANDLES;
  75         req->exe_file     = -1;
  76         req->hstdin       = -1;
  77         req->hstdout      = -1;
  78         req->hstderr      = -1;
  79         req->event        = -1;
  80         req->cmd_show     = 0;
  81         req->env_ptr      = NULL;
  82     }
  83     memcpy( process->info->cmdline, cmd_line, len );
  84     process->info->cmdline[len] = 0;
  85     process->create_flags = process->info->create_flags;
  86     return 1;
  87 }
  88
  89 /* set the console and stdio handles for a newly created process */
  90 static int set_process_console( struct process *process, struct process *parent )
  91 {
  92     struct new_process_request *info = process->info;
  93
  94     if (process->create_flags & CREATE_NEW_CONSOLE)
  95     {
  96         if (!alloc_console( process )) return 0;
  97     }
  98     else if (!(process->create_flags & DETACHED_PROCESS))
  99     {
 100         if (parent->console_in) process->console_in = grab_object( parent->console_in );
 101         if (parent->console_out) process->console_out = grab_object( parent->console_out );
 102     }
 103     if (parent)
 104     {
 105         if (!info->inherit_all && !(info->start_flags & STARTF_USESTDHANDLES))
 106         {
 107             /* duplicate the handle from the parent into this process */
 108             info->hstdin  = duplicate_handle( parent, info->hstdin, process,
 109                                               0, TRUE, DUPLICATE_SAME_ACCESS );
 110             info->hstdout = duplicate_handle( parent, info->hstdout, process,
 111                                               0, TRUE, DUPLICATE_SAME_ACCESS );
 112             info->hstderr = duplicate_handle( parent, info->hstderr, process,
 113                                               0, TRUE, DUPLICATE_SAME_ACCESS );
 114         }
 115     }
 116     else
 117     {
 118         /* no parent, use handles to the console for stdio */
 119         info->hstdin  = alloc_handle( process, process->console_in,
 120                                       GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 121         info->hstdout = alloc_handle( process, process->console_out,
 122                                       GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 123         info->hstderr = alloc_handle( process, process->console_out,
 124                                       GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 125     }
 126     return 1;
 127 }
 128
 129 /* create a new process and its main thread */
 130 struct thread *create_process( int fd, struct process *parent,
 131                                struct new_process_request *req,
 132                                const char *cmd_line, size_t len )
 133 {
 134     struct process *process;
 135     struct thread *thread = NULL;
 136
 137     if (!(process = alloc_object( &process_ops, -1 )))
 138     {
 139         close( fd );
 140         return NULL;
 141     }
 142     process->next            = NULL;
 143     process->prev            = NULL;
 144     process->thread_list     = NULL;
 145     process->debugger        = NULL;
 146     process->handles         = NULL;
 147     process->exit_code       = STILL_ACTIVE;
 148     process->running_threads = 0;
 149     process->priority        = NORMAL_PRIORITY_CLASS;
 150     process->affinity        = 1;
 151     process->suspend         = 0;
 152     process->create_flags    = 0;
 153     process->console_in      = NULL;
 154     process->console_out     = NULL;
 155     process->init_event      = NULL;
 156     process->info            = NULL;
 157     process->ldt_copy        = NULL;
 158     process->ldt_flags       = NULL;
 159     process->exe.next        = NULL;
 160     process->exe.prev        = NULL;
 161     process->exe.file        = NULL;
 162     process->exe.dbg_offset  = 0;
 163     process->exe.dbg_size    = 0;
 164     gettimeofday( &process->start_time, NULL );
 165     if ((process->next = first_process) != NULL) process->next->prev = process;
 166     first_process = process;
 167
 168     /* copy the request structure */
 169     if (!set_creation_info( process, req, cmd_line, len )) goto error;
 170
 171     if (process->info->inherit_all)
 172         process->handles = copy_handle_table( process, parent );
 173     else
 174         process->handles = alloc_handle_table( process, 0 );
 175     if (!process->handles) goto error;
 176
 177     /* alloc a handle for the process itself */
 178     alloc_handle( process, process, PROCESS_ALL_ACCESS, 0 );
 179
 180     /* retrieve the main exe file */
 181     if (process->info->exe_file != -1)
 182     {
 183         if (!(process->exe.file = get_file_obj( parent, process->info->exe_file,
 184                                                 GENERIC_READ ))) goto error;
 185         process->info->exe_file = -1;
 186     }
 187
 188     /* get the init done event */
 189     if (process->info->event != -1)
 190     {
 191         if (!(process->init_event = get_event_obj( parent, process->info->event,
 192                                                    EVENT_MODIFY_STATE ))) goto error;
 193     }
 194
 195     /* set the process console */
 196     if (!set_process_console( process, parent )) goto error;
 197
 198     /* create the main thread */
 199     if (!(thread = create_thread( fd, process, (process->create_flags & CREATE_SUSPENDED) != 0)))
 200         goto error;
 201
 202     /* attach to the debugger if requested */
 203     if (process->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
 204         set_process_debugger( process, current );
 205     else if (parent && parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
 206         set_process_debugger( process, parent->debugger );
 207
 208     release_object( process );
 209     return thread;
 210
 211  error:
 212     close( fd );
 213     free_console( process );
 214     if (process->handles) release_object( process->handles );
 215     release_object( process );
 216     return NULL;
 217 }
 218
 219 /* destroy a process when its refcount is 0 */
 220 static void process_destroy( struct object *obj )
 221 {
 222     struct process *process = (struct process *)obj;
 223     assert( obj->ops == &process_ops );
 224
 225     /* we can't have a thread remaining */
 226     assert( !process->thread_list );
 227     if (process->next) process->next->prev = process->prev;
 228     if (process->prev) process->prev->next = process->next;
 229     else first_process = process->next;
 230     if (process->info) free( process->info );
 231     if (process->init_event) release_object( process->init_event );
 232     if (process->exe.file) release_object( process->exe.file );
 233 }
 234
 235 /* dump a process on stdout for debugging purposes */
 236 static void process_dump( struct object *obj, int verbose )
 237 {
 238     struct process *process = (struct process *)obj;
 239     assert( obj->ops == &process_ops );
 240
 241     fprintf( stderr, "Process next=%p prev=%p console=%p/%p handles=%p\n",
 242              process->next, process->prev, process->console_in, process->console_out,
 243              process->handles );
 244 }
 245
 246 static int process_signaled( struct object *obj, struct thread *thread )
 247 {
 248     struct process *process = (struct process *)obj;
 249     return !process->running_threads;
 250 }
 251
 252
 253 /* get a process from an id (and increment the refcount) */
 254 struct process *get_process_from_id( void *id )
 255 {
 256     struct process *p = first_process;
 257     while (p && (p != id)) p = p->next;
 258     if (p) grab_object( p );
 259     else set_error( STATUS_INVALID_PARAMETER );
 260     return p;
 261 }
 262
 263 /* get a process from a handle (and increment the refcount) */
 264 struct process *get_process_from_handle( int handle, unsigned int access )
 265 {
 266     return (struct process *)get_handle_obj( current->process, handle,
 267                                              access, &process_ops );
 268 }
 269
 270 /* add a dll to a process list */
 271 static struct process_dll *process_load_dll( struct process *process, struct file *file,
 272                                              void *base )
 273 {
 274     struct process_dll *dll;
 275
 276     /* make sure we don't already have one with the same base address */
 277     for (dll = process->exe.next; dll; dll = dll->next) if (dll->base == base)
 278     {
 279         set_error( STATUS_INVALID_PARAMETER );
 280         return NULL;
 281     }
 282
 283     if ((dll = mem_alloc( sizeof(*dll) )))
 284     {
 285         dll->prev = &process->exe;
 286         dll->file = NULL;
 287         dll->base = base;
 288         if (file) dll->file = (struct file *)grab_object( file );
 289         if ((dll->next = process->exe.next)) dll->next->prev = dll;
 290         process->exe.next = dll;
 291     }
 292     return dll;
 293 }
 294
 295 /* remove a dll from a process list */
 296 static void process_unload_dll( struct process *process, void *base )
 297 {
 298     struct process_dll *dll;
 299
 300     for (dll = process->exe.next; dll; dll = dll->next)
 301     {
 302         if (dll->base == base)
 303         {
 304             if (dll->file) release_object( dll->file );
 305             if (dll->next) dll->next->prev = dll->prev;
 306             if (dll->prev) dll->prev->next = dll->next;
 307             free( dll );
 308             generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
 309             return;
 310         }
 311     }
 312     set_error( STATUS_INVALID_PARAMETER );
 313 }
 314
 315 /* a process has been killed (i.e. its last thread died) */
 316 static void process_killed( struct process *process )
 317 {
 318     assert( !process->thread_list );
 319     gettimeofday( &process->end_time, NULL );
 320     release_object( process->handles );
 321     process->handles = NULL;
 322     free_console( process );
 323     while (process->exe.next)
 324     {
 325         struct process_dll *dll = process->exe.next;
 326         process->exe.next = dll->next;
 327         if (dll->file) release_object( dll->file );
 328         free( dll );
 329     }
 330     if (process->exe.file) release_object( process->exe.file );
 331     process->exe.file = NULL;
 332     wake_up( &process->obj, 0 );
 333     if (!--running_processes)
 334     {
 335         /* last process died, close global handles */
 336         close_global_handles();
 337         /* this will cause the select loop to terminate */
 338         if (!persistent_server) close_master_socket();
 339     }
 340 }
 341
 342 /* add a thread to a process running threads list */
 343 void add_process_thread( struct process *process, struct thread *thread )
 344 {
 345     thread->proc_next = process->thread_list;
 346     thread->proc_prev = NULL;
 347     if (thread->proc_next) thread->proc_next->proc_prev = thread;
 348     process->thread_list = thread;
 349     if (!process->running_threads++) running_processes++;
 350     grab_object( thread );
 351 }
 352
 353 /* remove a thread from a process running threads list */
 354 void remove_process_thread( struct process *process, struct thread *thread )
 355 {
 356     assert( process->running_threads > 0 );
 357     assert( process->thread_list );
 358
 359     if (thread->proc_next) thread->proc_next->proc_prev = thread->proc_prev;
 360     if (thread->proc_prev) thread->proc_prev->proc_next = thread->proc_next;
 361     else process->thread_list = thread->proc_next;
 362
 363     if (!--process->running_threads)
 364     {
 365         /* we have removed the last running thread, exit the process */
 366         process->exit_code = thread->exit_code;
 367         generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
 368         process_killed( process );
 369     }
 370     else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
 371     release_object( thread );
 372 }
 373
 374 /* suspend all the threads of a process */
 375 void suspend_process( struct process *process )
 376 {
 377     if (!process->suspend++)
 378     {
 379         struct thread *thread = process->thread_list;
 380         for (; thread; thread = thread->proc_next)
 381         {
 382             if (!thread->suspend) stop_thread( thread );
 383         }
 384     }
 385 }
 386
 387 /* resume all the threads of a process */
 388 void resume_process( struct process *process )
 389 {
 390     assert (process->suspend > 0);
 391     if (!--process->suspend)
 392     {
 393         struct thread *thread = process->thread_list;
 394         for (; thread; thread = thread->proc_next)
 395         {
 396             if (!thread->suspend) continue_thread( thread );
 397         }
 398     }
 399 }
 400
 401 /* kill a process on the spot */
 402 static void kill_process( struct process *process, struct thread *skip, int exit_code )
 403 {
 404     struct thread *thread = process->thread_list;
 405     while (thread)
 406     {
 407         struct thread *next = thread->proc_next;
 408         thread->exit_code = exit_code;
 409         if (thread != skip) kill_thread( thread, 1 );
 410         thread = next;
 411     }
 412 }
 413
 414 /* kill all processes being debugged by a given thread */
 415 void kill_debugged_processes( struct thread *debugger, int exit_code )
 416 {
 417     for (;;)  /* restart from the beginning of the list every time */
 418     {
 419         struct process *process = first_process;
 420         /* find the first process being debugged by 'debugger' and still running */
 421         while (process && (process->debugger != debugger || !process->running_threads))
 422             process = process->next;
 423         if (!process) return;
 424         process->debugger = NULL;
 425         kill_process( process, NULL, exit_code );
 426     }
 427 }
 428
 429 /* get all information about a process */
 430 static void get_process_info( struct process *process, struct get_process_info_request *req )
 431 {
 432     req->pid              = process;
 433     req->debugged         = (process->debugger != 0);
 434     req->exit_code        = process->exit_code;
 435     req->priority         = process->priority;
 436     req->process_affinity = process->affinity;
 437     req->system_affinity  = 1;
 438 }
 439
 440 /* set all information about a process */
 441 static void set_process_info( struct process *process,
 442                               struct set_process_info_request *req )
 443 {
 444     if (req->mask & SET_PROCESS_INFO_PRIORITY)
 445         process->priority = req->priority;
 446     if (req->mask & SET_PROCESS_INFO_AFFINITY)
 447     {
 448         if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
 449         else process->affinity = req->affinity;
 450     }
 451 }
 452
 453 /* read data from a process memory space */
 454 /* len is the total size (in ints), max is the size we can actually store in the output buffer */
 455 /* we read the total size in all cases to check for permissions */
 456 static void read_process_memory( struct process *process, const int *addr,
 457                                  size_t len, size_t max, int *dest )
 458 {
 459     struct thread *thread = process->thread_list;
 460
 461     if ((unsigned int)addr % sizeof(int))  /* address must be aligned */
 462     {
 463         set_error( STATUS_INVALID_PARAMETER );
 464         return;
 465     }
 466     if (!thread)  /* process is dead */
 467     {
 468         set_error( STATUS_ACCESS_DENIED );
 469         return;
 470     }
 471     if (suspend_for_ptrace( thread ))
 472     {
 473         while (len > 0 && max)
 474         {
 475             if (read_thread_int( thread, addr++, dest++ ) == -1) goto done;
 476             max--;
 477             len--;
 478         }
 479         /* check the rest for read permission */
 480         if (len > 0)
 481         {
 482             int dummy, page = get_page_size() / sizeof(int);
 483             while (len >= page)
 484             {
 485                 addr += page;
 486                 len -= page;
 487                 if (read_thread_int( thread, addr - 1, &dummy ) == -1) goto done;
 488             }
 489             if (len && (read_thread_int( thread, addr + len - 1, &dummy ) == -1)) goto done;
 490         }
 491     done:
 492         resume_thread( thread );
 493     }
 494 }
 495
 496 /* write data to a process memory space */
 497 /* len is the total size (in ints), max is the size we can actually read from the input buffer */
 498 /* we check the total size for write permissions */
 499 static void write_process_memory( struct process *process, int *addr, size_t len,
 500                                   size_t max, unsigned int first_mask,
 501                                   unsigned int last_mask, const int *src )
 502 {
 503     struct thread *thread = process->thread_list;
 504
 505     if (!len || ((unsigned int)addr % sizeof(int)))  /* address must be aligned */
 506     {
 507         set_error( STATUS_INVALID_PARAMETER );
 508         return;
 509     }
 510     if (!thread)  /* process is dead */
 511     {
 512         set_error( STATUS_ACCESS_DENIED );
 513         return;
 514     }
 515     if (suspend_for_ptrace( thread ))
 516     {
 517         /* first word is special */
 518         if (len > 1)
 519         {
 520             if (write_thread_int( thread, addr++, *src++, first_mask ) == -1) goto done;
 521             len--;
 522             max--;
 523         }
 524         else last_mask &= first_mask;
 525
 526         while (len > 1 && max)
 527         {
 528             if (write_thread_int( thread, addr++, *src++, ~0 ) == -1) goto done;
 529             max--;
 530             len--;
 531         }
 532
 533         if (max)
 534         {
 535             /* last word is special too */
 536             if (write_thread_int( thread, addr, *src, last_mask ) == -1) goto done;
 537         }
 538         else
 539         {
 540             /* check the rest for write permission */
 541             int page = get_page_size() / sizeof(int);
 542             while (len >= page)
 543             {
 544                 addr += page;
 545                 len -= page;
 546                 if (write_thread_int( thread, addr - 1, 0, 0 ) == -1) goto done;
 547             }
 548             if (len && (write_thread_int( thread, addr + len - 1, 0, 0 ) == -1)) goto done;
 549         }
 550     done:
 551         resume_thread( thread );
 552     }
 553 }
 554
 555 /* take a snapshot of currently running processes */
 556 struct process_snapshot *process_snap( int *count )
 557 {
 558     struct process_snapshot *snapshot, *ptr;
 559     struct process *process;
 560     if (!running_processes) return NULL;
 561     if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
 562         return NULL;
 563     ptr = snapshot;
 564     for (process = first_process; process; process = process->next)
 565     {
 566         if (!process->running_threads) continue;
 567         ptr->process  = process;
 568         ptr->threads  = process->running_threads;
 569         ptr->priority = process->priority;
 570         grab_object( process );
 571         ptr++;
 572     }
 573     *count = running_processes;
 574     return snapshot;
 575 }
 576
 577 /* create a new process */
 578 DECL_HANDLER(new_process)
 579 {
 580     size_t len = get_req_strlen( req->cmdline );
 581     struct thread *thread;
 582     int sock[2];
 583
 584     req->phandle = -1;
 585     req->thandle = -1;
 586     req->pid     = NULL;
 587     req->tid     = NULL;
 588
 589     if (socketpair( AF_UNIX, SOCK_STREAM, 0, sock ) == -1)
 590     {
 591         file_set_error();
 592         return;
 593     }
 594
 595     if ((thread = create_process( sock[0], current->process, req, req->cmdline, len )))
 596     {
 597         int phandle = alloc_handle( current->process, thread->process,
 598                                     PROCESS_ALL_ACCESS, req->inherit );
 599         if ((req->phandle = phandle) != -1)
 600         {
 601             if ((req->thandle = alloc_handle( current->process, thread,
 602                                               THREAD_ALL_ACCESS, req->inherit )) != -1)
 603             {
 604                 /* thread object will be released when the thread gets killed */
 605                 set_reply_fd( current, sock[1] );
 606                 req->pid = thread->process;
 607                 req->tid = thread;
 608                 return;
 609             }
 610             close_handle( current->process, phandle );
 611         }
 612         release_object( thread );
 613     }
 614     close( sock[1] );
 615 }
 616
 617 /* initialize a new process */
 618 DECL_HANDLER(init_process)
 619 {
 620     struct new_process_request *info;
 621
 622     if (!current->unix_pid)
 623     {
 624         fatal_protocol_error( current, "init_process: init_thread not called yet\n" );
 625         return;
 626     }
 627     if (!(info = current->process->info))
 628     {
 629         fatal_protocol_error( current, "init_process: called twice\n" );
 630         return;
 631     }
 632     current->process->ldt_copy  = req->ldt_copy;
 633     current->process->ldt_flags = req->ldt_flags;
 634     current->process->info = NULL;
 635     req->exe_file    = -1;
 636     req->start_flags = info->start_flags;
 637     req->hstdin      = info->hstdin;
 638     req->hstdout     = info->hstdout;
 639     req->hstderr     = info->hstderr;
 640     req->cmd_show    = info->cmd_show;
 641     req->env_ptr     = info->env_ptr;
 642     strcpy( req->cmdline, info->cmdline );
 643     if (current->process->exe.file)
 644         req->exe_file = alloc_handle( current->process, current->process->exe.file,
 645                                       GENERIC_READ, 0 );
 646     free( info );
 647 }
 648
 649 /* signal the end of the process initialization */
 650 DECL_HANDLER(init_process_done)
 651 {
 652     struct process *process = current->process;
 653     if (!process->init_event)
 654     {
 655         fatal_protocol_error( current, "init_process_done: no event\n" );
 656         return;
 657     }
 658     current->entry    = req->entry;
 659     process->exe.base = req->module;
 660     generate_startup_debug_events( current->process );
 661     set_event( process->init_event );
 662     release_object( process->init_event );
 663     process->init_event = NULL;
 664     if (current->suspend + current->process->suspend > 0) stop_thread( current );
 665     req->debugged = (current->process->debugger != 0);
 666 }
 667
 668 /* open a handle to a process */
 669 DECL_HANDLER(open_process)
 670 {
 671     struct process *process = get_process_from_id( req->pid );
 672     req->handle = -1;
 673     if (process)
 674     {
 675         req->handle = alloc_handle( current->process, process, req->access, req->inherit );
 676         release_object( process );
 677     }
 678 }
 679
 680 /* terminate a process */
 681 DECL_HANDLER(terminate_process)
 682 {
 683     struct process *process;
 684
 685     if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
 686     {
 687         req->self = (current->process == process);
 688         kill_process( process, current, req->exit_code );
 689         release_object( process );
 690     }
 691 }
 692
 693 /* fetch information about a process */
 694 DECL_HANDLER(get_process_info)
 695 {
 696     struct process *process;
 697
 698     if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
 699     {
 700         get_process_info( process, req );
 701         release_object( process );
 702     }
 703 }
 704
 705 /* set information about a process */
 706 DECL_HANDLER(set_process_info)
 707 {
 708     struct process *process;
 709
 710     if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
 711     {
 712         set_process_info( process, req );
 713         release_object( process );
 714     }
 715 }
 716
 717 /* read data from a process address space */
 718 DECL_HANDLER(read_process_memory)
 719 {
 720     struct process *process;
 721
 722     if ((process = get_process_from_handle( req->handle, PROCESS_VM_READ )))
 723     {
 724         read_process_memory( process, req->addr, req->len,
 725                              get_req_size( req->data, sizeof(int) ), req->data );
 726         release_object( process );
 727     }
 728 }
 729
 730 /* write data to a process address space */
 731 DECL_HANDLER(write_process_memory)
 732 {
 733     struct process *process;
 734
 735     if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
 736     {
 737         write_process_memory( process, req->addr, req->len, get_req_size( req->data, sizeof(int) ),
 738                               req->first_mask, req->last_mask, req->data );
 739         release_object( process );
 740     }
 741 }
 742
 743 /* notify the server that a dll has been loaded */
 744 DECL_HANDLER(load_dll)
 745 {
 746     struct process_dll *dll;
 747     struct file *file = NULL;
 748
 749     if ((req->handle != -1) &&
 750         !(file = get_file_obj( current->process, req->handle, GENERIC_READ ))) return;
 751
 752     if ((dll = process_load_dll( current->process, file, req->base )))
 753     {
 754         dll->dbg_offset = req->dbg_offset;
 755         dll->dbg_size   = req->dbg_size;
 756         dll->name       = req->name;
 757         /* only generate event if initialization is done */
 758         if (!current->process->init_event)
 759             generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
 760     }
 761     if (file) release_object( file );
 762 }
 763
 764 /* notify the server that a dll is being unloaded */
 765 DECL_HANDLER(unload_dll)
 766 {
 767     process_unload_dll( current->process, req->base );
 768 }