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_poll_event( struct object *obj, int event );
  40 static void process_destroy( struct object *obj );
  41
  42 static const struct object_ops process_ops =
  43 {
  44     sizeof(struct process),      /* size */
  45     process_dump,                /* dump */
  46     add_queue,                   /* add_queue */
  47     remove_queue,                /* remove_queue */
  48     process_signaled,            /* signaled */
  49     no_satisfied,                /* satisfied */
  50     NULL,                        /* get_poll_events */
  51     process_poll_event,          /* poll_event */
  52     no_get_fd,                   /* get_fd */
  53     no_flush,                    /* flush */
  54     no_get_file_info,            /* get_file_info */
  55     process_destroy              /* destroy */
  56 };
  57
  58 /* process startup info */
  59
  60 struct startup_info
  61 {
  62     struct object       obj;          /* object header */
  63     int                 inherit_all;  /* inherit all handles from parent */
  64     int                 create_flags; /* creation flags */
  65     int                 start_flags;  /* flags from startup info */
  66     handle_t            hstdin;       /* handle for stdin */
  67     handle_t            hstdout;      /* handle for stdout */
  68     handle_t            hstderr;      /* handle for stderr */
  69     int                 cmd_show;     /* main window show mode */
  70     struct file        *exe_file;     /* file handle for main exe */
  71     char               *filename;     /* file name for main exe */
  72     struct thread      *owner;        /* owner thread (the one that created the new process) */
  73     struct process     *process;      /* created process */
  74     struct thread      *thread;       /* created thread */
  75 };
  76
  77 static void startup_info_dump( struct object *obj, int verbose );
  78 static int startup_info_signaled( struct object *obj, struct thread *thread );
  79 static void startup_info_destroy( struct object *obj );
  80
  81 static const struct object_ops startup_info_ops =
  82 {
  83     sizeof(struct startup_info),   /* size */
  84     startup_info_dump,             /* dump */
  85     add_queue,                     /* add_queue */
  86     remove_queue,                  /* remove_queue */
  87     startup_info_signaled,         /* signaled */
  88     no_satisfied,                  /* satisfied */
  89     NULL,                          /* get_poll_events */
  90     NULL,                          /* poll_event */
  91     no_get_fd,                     /* get_fd */
  92     no_flush,                      /* flush */
  93     no_get_file_info,              /* get_file_info */
  94     startup_info_destroy           /* destroy */
  95 };
  96
  97
  98 /* set the console and stdio handles for a newly created process */
  99 static int set_process_console( struct process *process, struct process *parent,
 100                                 struct startup_info *info, struct init_process_request *req )
 101 {
 102     if (process->create_flags & CREATE_NEW_CONSOLE)
 103     {
 104         if (!alloc_console( process )) return 0;
 105     }
 106     else if (parent && !(process->create_flags & DETACHED_PROCESS))
 107     {
 108         if (parent->console_in) process->console_in = grab_object( parent->console_in );
 109         if (parent->console_out) process->console_out = grab_object( parent->console_out );
 110     }
 111     if (parent)
 112     {
 113         if (!info->inherit_all && !(info->start_flags & STARTF_USESTDHANDLES))
 114         {
 115             /* duplicate the handle from the parent into this process */
 116             req->hstdin  = duplicate_handle( parent, info->hstdin, process,
 117                                              0, TRUE, DUPLICATE_SAME_ACCESS );
 118             req->hstdout = duplicate_handle( parent, info->hstdout, process,
 119                                              0, TRUE, DUPLICATE_SAME_ACCESS );
 120             req->hstderr = duplicate_handle( parent, info->hstderr, process,
 121                                              0, TRUE, DUPLICATE_SAME_ACCESS );
 122         }
 123         else
 124         {
 125             req->hstdin  = info->hstdin;
 126             req->hstdout = info->hstdout;
 127             req->hstderr = info->hstderr;
 128         }
 129     }
 130     else
 131     {
 132         /* no parent, use handles to the console for stdio */
 133         req->hstdin  = alloc_handle( process, process->console_in,
 134                                      GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 135         req->hstdout = alloc_handle( process, process->console_out,
 136                                      GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 137         req->hstderr = alloc_handle( process, process->console_out,
 138                                      GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
 139     }
 140     /* some handles above may have been invalid; this is not an error */
 141     if (get_error() == STATUS_INVALID_HANDLE) clear_error();
 142     return 1;
 143 }
 144
 145 /* create a new process and its main thread */
 146 struct thread *create_process( int fd )
 147 {
 148     struct process *process;
 149     struct thread *thread = NULL;
 150     int request_pipe[2];
 151
 152     if (!(process = alloc_object( &process_ops, fd ))) return NULL;
 153     process->next            = NULL;
 154     process->prev            = NULL;
 155     process->thread_list     = NULL;
 156     process->debugger        = NULL;
 157     process->handles         = NULL;
 158     process->exit_code       = STILL_ACTIVE;
 159     process->running_threads = 0;
 160     process->priority        = NORMAL_PRIORITY_CLASS;
 161     process->affinity        = 1;
 162     process->suspend         = 0;
 163     process->create_flags    = 0;
 164     process->console_in      = NULL;
 165     process->console_out     = NULL;
 166     process->init_event      = NULL;
 167     process->idle_event      = NULL;
 168     process->queue           = NULL;
 169     process->atom_table      = NULL;
 170     process->ldt_copy        = NULL;
 171     process->exe.next        = NULL;
 172     process->exe.prev        = NULL;
 173     process->exe.file        = NULL;
 174     process->exe.dbg_offset  = 0;
 175     process->exe.dbg_size    = 0;
 176     gettimeofday( &process->start_time, NULL );
 177     if ((process->next = first_process) != NULL) process->next->prev = process;
 178     first_process = process;
 179
 180     /* create the init done event */
 181     if (!(process->init_event = create_event( NULL, 0, 1, 0 ))) goto error;
 182
 183     /* create the main thread */
 184     if (pipe( request_pipe ) == -1)
 185     {
 186         file_set_error();
 187         goto error;
 188     }
 189     send_client_fd( process, request_pipe[1], 0 );
 190     close( request_pipe[1] );
 191     if (!(thread = create_thread( request_pipe[0], process ))) goto error;
 192
 193     set_select_events( &process->obj, POLLIN );  /* start listening to events */
 194     release_object( process );
 195     return thread;
 196
 197  error:
 198     if (thread) release_object( thread );
 199     release_object( process );
 200     return NULL;
 201 }
 202
 203 /* initialize the current process and fill in the request */
 204 static void init_process( int ppid, struct init_process_request *req )
 205 {
 206     struct process *process = current->process;
 207     struct thread *parent_thread = get_thread_from_pid( ppid );
 208     struct process *parent = NULL;
 209     struct startup_info *info = NULL;
 210
 211     if (parent_thread)
 212     {
 213         parent = parent_thread->process;
 214         info = parent_thread->info;
 215         if (!info)
 216         {
 217             fatal_protocol_error( current, "init_process: parent but no info\n" );
 218             return;
 219         }
 220         if (info->thread)
 221         {
 222             fatal_protocol_error( current, "init_process: called twice?\n" );
 223             return;
 224         }
 225     }
 226
 227     /* set the process flags */
 228     process->create_flags = info ? info->create_flags : CREATE_NEW_CONSOLE;
 229
 230     /* create the handle table */
 231     if (parent && info->inherit_all)
 232         process->handles = copy_handle_table( process, parent );
 233     else
 234         process->handles = alloc_handle_table( process, 0 );
 235     if (!process->handles) goto error;
 236
 237     /* retrieve the main exe file */
 238     req->exe_file = 0;
 239     if (parent && info->exe_file)
 240     {
 241         process->exe.file = (struct file *)grab_object( info->exe_file );
 242         if (!(req->exe_file = alloc_handle( process, process->exe.file, GENERIC_READ, 0 )))
 243             goto error;
 244     }
 245
 246     /* set the process console */
 247     if (!set_process_console( process, parent, info, req )) goto error;
 248
 249     if (parent)
 250     {
 251         /* attach to the debugger if requested */
 252         if (process->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
 253             set_process_debugger( process, parent_thread );
 254         else if (parent && parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
 255             set_process_debugger( process, parent->debugger );
 256     }
 257
 258     /* thread will be actually suspended in init_done */
 259     if (process->create_flags & CREATE_SUSPENDED) current->suspend++;
 260
 261     if (info)
 262     {
 263         size_t size = strlen(info->filename);
 264         if (size > get_req_data_size(req)) size = get_req_data_size(req);
 265         req->start_flags = info->start_flags;
 266         req->cmd_show    = info->cmd_show;
 267         memcpy( get_req_data(req), info->filename, size );
 268         set_req_data_size( req, size );
 269         info->process = (struct process *)grab_object( process );
 270         info->thread  = (struct thread *)grab_object( current );
 271         wake_up( &info->obj, 0 );
 272     }
 273     else
 274     {
 275         req->start_flags  = STARTF_USESTDHANDLES;
 276         req->cmd_show     = 0;
 277         set_req_data_size( req, 0 );
 278     }
 279     req->create_flags = process->create_flags;
 280     req->server_start = server_start_ticks;
 281  error:
 282 }
 283
 284 /* destroy a process when its refcount is 0 */
 285 static void process_destroy( struct object *obj )
 286 {
 287     struct process *process = (struct process *)obj;
 288     assert( obj->ops == &process_ops );
 289
 290     /* we can't have a thread remaining */
 291     assert( !process->thread_list );
 292     if (process->next) process->next->prev = process->prev;
 293     if (process->prev) process->prev->next = process->next;
 294     else first_process = process->next;
 295     if (process->init_event) release_object( process->init_event );
 296     if (process->idle_event) release_object( process->idle_event );
 297     if (process->queue) release_object( process->queue );
 298     if (process->atom_table) release_object( process->atom_table );
 299     if (process->exe.file) release_object( process->exe.file );
 300 }
 301
 302 /* dump a process on stdout for debugging purposes */
 303 static void process_dump( struct object *obj, int verbose )
 304 {
 305     struct process *process = (struct process *)obj;
 306     assert( obj->ops == &process_ops );
 307
 308     fprintf( stderr, "Process next=%p prev=%p console=%p/%p handles=%p\n",
 309              process->next, process->prev, process->console_in, process->console_out,
 310              process->handles );
 311 }
 312
 313 static int process_signaled( struct object *obj, struct thread *thread )
 314 {
 315     struct process *process = (struct process *)obj;
 316     return !process->running_threads;
 317 }
 318
 319
 320 static void process_poll_event( struct object *obj, int event )
 321 {
 322     struct process *process = (struct process *)obj;
 323     assert( obj->ops == &process_ops );
 324
 325     if (event & (POLLERR | POLLHUP)) set_select_events( obj, -1 );
 326     else if (event & POLLIN) receive_fd( process );
 327 }
 328
 329 static void startup_info_destroy( struct object *obj )
 330 {
 331     struct startup_info *info = (struct startup_info *)obj;
 332     assert( obj->ops == &startup_info_ops );
 333     if (info->filename) free( info->filename );
 334     if (info->exe_file) release_object( info->exe_file );
 335     if (info->process) release_object( info->process );
 336     if (info->thread) release_object( info->thread );
 337     if (info->owner)
 338     {
 339         info->owner->info = NULL;
 340         release_object( info->owner );
 341     }
 342 }
 343
 344 static void startup_info_dump( struct object *obj, int verbose )
 345 {
 346     struct startup_info *info = (struct startup_info *)obj;
 347     assert( obj->ops == &startup_info_ops );
 348
 349     fprintf( stderr, "Startup info flags=%x in=%d out=%d err=%d name='%s'\n",
 350              info->start_flags, info->hstdin, info->hstdout, info->hstderr, info->filename );
 351 }
 352
 353 static int startup_info_signaled( struct object *obj, struct thread *thread )
 354 {
 355     struct startup_info *info = (struct startup_info *)obj;
 356     return (info->thread != NULL);
 357 }
 358
 359
 360 /* get a process from an id (and increment the refcount) */
 361 struct process *get_process_from_id( void *id )
 362 {
 363     struct process *p = first_process;
 364     while (p && (p != id)) p = p->next;
 365     if (p) grab_object( p );
 366     else set_error( STATUS_INVALID_PARAMETER );
 367     return p;
 368 }
 369
 370 /* get a process from a handle (and increment the refcount) */
 371 struct process *get_process_from_handle( handle_t handle, unsigned int access )
 372 {
 373     return (struct process *)get_handle_obj( current->process, handle,
 374                                              access, &process_ops );
 375 }
 376
 377 /* add a dll to a process list */
 378 static struct process_dll *process_load_dll( struct process *process, struct file *file,
 379                                              void *base )
 380 {
 381     struct process_dll *dll;
 382
 383     /* make sure we don't already have one with the same base address */
 384     for (dll = process->exe.next; dll; dll = dll->next) if (dll->base == base)
 385     {
 386         set_error( STATUS_INVALID_PARAMETER );
 387         return NULL;
 388     }
 389
 390     if ((dll = mem_alloc( sizeof(*dll) )))
 391     {
 392         dll->prev = &process->exe;
 393         dll->file = NULL;
 394         dll->base = base;
 395         if (file) dll->file = (struct file *)grab_object( file );
 396         if ((dll->next = process->exe.next)) dll->next->prev = dll;
 397         process->exe.next = dll;
 398     }
 399     return dll;
 400 }
 401
 402 /* remove a dll from a process list */
 403 static void process_unload_dll( struct process *process, void *base )
 404 {
 405     struct process_dll *dll;
 406
 407     for (dll = process->exe.next; dll; dll = dll->next)
 408     {
 409         if (dll->base == base)
 410         {
 411             if (dll->file) release_object( dll->file );
 412             if (dll->next) dll->next->prev = dll->prev;
 413             if (dll->prev) dll->prev->next = dll->next;
 414             free( dll );
 415             generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
 416             return;
 417         }
 418     }
 419     set_error( STATUS_INVALID_PARAMETER );
 420 }
 421
 422 /* a process has been killed (i.e. its last thread died) */
 423 static void process_killed( struct process *process )
 424 {
 425     assert( !process->thread_list );
 426     gettimeofday( &process->end_time, NULL );
 427     if (process->handles) release_object( process->handles );
 428     process->handles = NULL;
 429     free_console( process );
 430     while (process->exe.next)
 431     {
 432         struct process_dll *dll = process->exe.next;
 433         process->exe.next = dll->next;
 434         if (dll->file) release_object( dll->file );
 435         free( dll );
 436     }
 437     if (process->exe.file) release_object( process->exe.file );
 438     process->exe.file = NULL;
 439     wake_up( &process->obj, 0 );
 440     if (!--running_processes)
 441     {
 442         /* last process died, close global handles */
 443         close_global_handles();
 444         /* this will cause the select loop to terminate */
 445         if (!persistent_server) close_master_socket();
 446     }
 447 }
 448
 449 /* add a thread to a process running threads list */
 450 void add_process_thread( struct process *process, struct thread *thread )
 451 {
 452     thread->proc_next = process->thread_list;
 453     thread->proc_prev = NULL;
 454     if (thread->proc_next) thread->proc_next->proc_prev = thread;
 455     process->thread_list = thread;
 456     if (!process->running_threads++) running_processes++;
 457     grab_object( thread );
 458 }
 459
 460 /* remove a thread from a process running threads list */
 461 void remove_process_thread( struct process *process, struct thread *thread )
 462 {
 463     assert( process->running_threads > 0 );
 464     assert( process->thread_list );
 465
 466     if (thread->proc_next) thread->proc_next->proc_prev = thread->proc_prev;
 467     if (thread->proc_prev) thread->proc_prev->proc_next = thread->proc_next;
 468     else process->thread_list = thread->proc_next;
 469
 470     if (!--process->running_threads)
 471     {
 472         /* we have removed the last running thread, exit the process */
 473         process->exit_code = thread->exit_code;
 474         generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
 475         process_killed( process );
 476     }
 477     else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
 478     release_object( thread );
 479 }
 480
 481 /* suspend all the threads of a process */
 482 void suspend_process( struct process *process )
 483 {
 484     if (!process->suspend++)
 485     {
 486         struct thread *thread = process->thread_list;
 487         for (; thread; thread = thread->proc_next)
 488         {
 489             if (!thread->suspend) stop_thread( thread );
 490         }
 491     }
 492 }
 493
 494 /* resume all the threads of a process */
 495 void resume_process( struct process *process )
 496 {
 497     assert (process->suspend > 0);
 498     if (!--process->suspend)
 499     {
 500         struct thread *thread = process->thread_list;
 501         for (; thread; thread = thread->proc_next)
 502         {
 503             if (!thread->suspend) continue_thread( thread );
 504         }
 505     }
 506 }
 507
 508 /* kill a process on the spot */
 509 void kill_process( struct process *process, struct thread *skip, int exit_code )
 510 {
 511     struct thread *thread = process->thread_list;
 512     while (thread)
 513     {
 514         struct thread *next = thread->proc_next;
 515         thread->exit_code = exit_code;
 516         if (thread != skip) kill_thread( thread, 1 );
 517         thread = next;
 518     }
 519 }
 520
 521 /* kill all processes being debugged by a given thread */
 522 void kill_debugged_processes( struct thread *debugger, int exit_code )
 523 {
 524     for (;;)  /* restart from the beginning of the list every time */
 525     {
 526         struct process *process = first_process;
 527         /* find the first process being debugged by 'debugger' and still running */
 528         while (process && (process->debugger != debugger || !process->running_threads))
 529             process = process->next;
 530         if (!process) return;
 531         process->debugger = NULL;
 532         kill_process( process, NULL, exit_code );
 533     }
 534 }
 535
 536 /* get all information about a process */
 537 static void get_process_info( struct process *process, struct get_process_info_request *req )
 538 {
 539     req->pid              = process;
 540     req->debugged         = (process->debugger != 0);
 541     req->exit_code        = process->exit_code;
 542     req->priority         = process->priority;
 543     req->process_affinity = process->affinity;
 544     req->system_affinity  = 1;
 545 }
 546
 547 /* set all information about a process */
 548 static void set_process_info( struct process *process,
 549                               struct set_process_info_request *req )
 550 {
 551     if (req->mask & SET_PROCESS_INFO_PRIORITY)
 552         process->priority = req->priority;
 553     if (req->mask & SET_PROCESS_INFO_AFFINITY)
 554     {
 555         if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
 556         else process->affinity = req->affinity;
 557     }
 558 }
 559
 560 /* read data from a process memory space */
 561 /* len is the total size (in ints), max is the size we can actually store in the output buffer */
 562 /* we read the total size in all cases to check for permissions */
 563 static void read_process_memory( struct process *process, const int *addr,
 564                                  size_t len, size_t max, int *dest )
 565 {
 566     struct thread *thread = process->thread_list;
 567
 568     if ((unsigned int)addr % sizeof(int))  /* address must be aligned */
 569     {
 570         set_error( STATUS_INVALID_PARAMETER );
 571         return;
 572     }
 573     if (!thread)  /* process is dead */
 574     {
 575         set_error( STATUS_ACCESS_DENIED );
 576         return;
 577     }
 578     if (suspend_for_ptrace( thread ))
 579     {
 580         while (len > 0 && max)
 581         {
 582             if (read_thread_int( thread, addr++, dest++ ) == -1) goto done;
 583             max--;
 584             len--;
 585         }
 586         /* check the rest for read permission */
 587         if (len > 0)
 588         {
 589             int dummy, page = get_page_size() / sizeof(int);
 590             while (len >= page)
 591             {
 592                 addr += page;
 593                 len -= page;
 594                 if (read_thread_int( thread, addr - 1, &dummy ) == -1) goto done;
 595             }
 596             if (len && (read_thread_int( thread, addr + len - 1, &dummy ) == -1)) goto done;
 597         }
 598     done:
 599         resume_thread( thread );
 600     }
 601 }
 602
 603 /* write data to a process memory space */
 604 /* len is the total size (in ints), max is the size we can actually read from the input buffer */
 605 /* we check the total size for write permissions */
 606 static void write_process_memory( struct process *process, int *addr, size_t len,
 607                                   size_t max, unsigned int first_mask,
 608                                   unsigned int last_mask, const int *src )
 609 {
 610     struct thread *thread = process->thread_list;
 611
 612     if (!len || ((unsigned int)addr % sizeof(int)))  /* address must be aligned */
 613     {
 614         set_error( STATUS_INVALID_PARAMETER );
 615         return;
 616     }
 617     if (!thread)  /* process is dead */
 618     {
 619         set_error( STATUS_ACCESS_DENIED );
 620         return;
 621     }
 622     if (suspend_for_ptrace( thread ))
 623     {
 624         /* first word is special */
 625         if (len > 1)
 626         {
 627             if (write_thread_int( thread, addr++, *src++, first_mask ) == -1) goto done;
 628             len--;
 629             max--;
 630         }
 631         else last_mask &= first_mask;
 632
 633         while (len > 1 && max)
 634         {
 635             if (write_thread_int( thread, addr++, *src++, ~0 ) == -1) goto done;
 636             max--;
 637             len--;
 638         }
 639
 640         if (max)
 641         {
 642             /* last word is special too */
 643             if (write_thread_int( thread, addr, *src, last_mask ) == -1) goto done;
 644         }
 645         else
 646         {
 647             /* check the rest for write permission */
 648             int page = get_page_size() / sizeof(int);
 649             while (len >= page)
 650             {
 651                 addr += page;
 652                 len -= page;
 653                 if (write_thread_int( thread, addr - 1, 0, 0 ) == -1) goto done;
 654             }
 655             if (len && (write_thread_int( thread, addr + len - 1, 0, 0 ) == -1)) goto done;
 656         }
 657     done:
 658         resume_thread( thread );
 659     }
 660 }
 661
 662 /* take a snapshot of currently running processes */
 663 struct process_snapshot *process_snap( int *count )
 664 {
 665     struct process_snapshot *snapshot, *ptr;
 666     struct process *process;
 667     if (!running_processes) return NULL;
 668     if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
 669         return NULL;
 670     ptr = snapshot;
 671     for (process = first_process; process; process = process->next)
 672     {
 673         if (!process->running_threads) continue;
 674         ptr->process  = process;
 675         ptr->threads  = process->running_threads;
 676         ptr->count    = process->obj.refcount;
 677         ptr->priority = process->priority;
 678         grab_object( process );
 679         ptr++;
 680     }
 681     *count = running_processes;
 682     return snapshot;
 683 }
 684
 685 /* take a snapshot of the modules of a process */
 686 struct module_snapshot *module_snap( struct process *process, int *count )
 687 {
 688     struct module_snapshot *snapshot, *ptr;
 689     struct process_dll *dll;
 690     int total = 0;
 691
 692     for (dll = &process->exe; dll; dll = dll->next) total++;
 693     if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
 694
 695     for (ptr = snapshot, dll = &process->exe; dll; dll = dll->next, ptr++)
 696     {
 697         ptr->base = dll->base;
 698     }
 699     *count = total;
 700     return snapshot;
 701 }
 702
 703
 704 /* create a new process */
 705 DECL_HANDLER(new_process)
 706 {
 707     size_t len = get_req_data_size( req );
 708     struct startup_info *info;
 709
 710     if (current->info)
 711     {
 712         fatal_protocol_error( current, "new_process: another process is being created\n" );
 713         return;
 714     }
 715
 716     /* build the startup info for a new process */
 717     if (!(info = alloc_object( &startup_info_ops, -1 ))) return;
 718     info->inherit_all  = req->inherit_all;
 719     info->create_flags = req->create_flags;
 720     info->start_flags  = req->start_flags;
 721     info->hstdin       = req->hstdin;
 722     info->hstdout      = req->hstdout;
 723     info->hstderr      = req->hstderr;
 724     info->cmd_show     = req->cmd_show;
 725     info->exe_file     = NULL;
 726     info->filename     = NULL;
 727     info->owner        = (struct thread *)grab_object( current );
 728     info->process      = NULL;
 729     info->thread       = NULL;
 730
 731     if (req->exe_file &&
 732         !(info->exe_file = get_file_obj( current->process, req->exe_file, GENERIC_READ )))
 733         goto done;
 734
 735     if (!(info->filename = mem_alloc( len + 1 ))) goto done;
 736
 737     memcpy( info->filename, get_req_data(req), len );
 738     info->filename[len] = 0;
 739     current->info = info;
 740     req->info = alloc_handle( current->process, info, SYNCHRONIZE, FALSE );
 741
 742  done:
 743     release_object( info );
 744 }
 745
 746 /* Retrieve information about a newly started process */
 747 DECL_HANDLER(get_new_process_info)
 748 {
 749     struct startup_info *info;
 750
 751     req->event = 0;
 752
 753     if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
 754                                                        0, &startup_info_ops )))
 755     {
 756         req->pid = get_process_id( info->process );
 757         req->tid = get_thread_id( info->thread );
 758         req->phandle = alloc_handle( current->process, info->process,
 759                                      PROCESS_ALL_ACCESS, req->pinherit );
 760         req->thandle = alloc_handle( current->process, info->thread,
 761                                      THREAD_ALL_ACCESS, req->tinherit );
 762         if (info->process->init_event)
 763             req->event = alloc_handle( current->process, info->process->init_event,
 764                                        EVENT_ALL_ACCESS, 0 );
 765         release_object( info );
 766     }
 767     else
 768     {
 769         req->pid     = 0;
 770         req->tid     = 0;
 771         req->phandle = 0;
 772         req->thandle = 0;
 773     }
 774 }
 775
 776 /* initialize a new process */
 777 DECL_HANDLER(init_process)
 778 {
 779     if (!current->unix_pid)
 780     {
 781         fatal_protocol_error( current, "init_process: init_thread not called yet\n" );
 782         return;
 783     }
 784     current->process->ldt_copy  = req->ldt_copy;
 785     init_process( req->ppid, req );
 786 }
 787
 788 /* signal the end of the process initialization */
 789 DECL_HANDLER(init_process_done)
 790 {
 791     struct file *file;
 792     struct process *process = current->process;
 793     if (!process->init_event)
 794     {
 795         fatal_protocol_error( current, "init_process_done: no event\n" );
 796         return;
 797     }
 798     process->exe.base = req->module;
 799     process->exe.name = req->name;
 800
 801     if (req->exe_file && (file = get_file_obj( current->process, req->exe_file, GENERIC_READ )))
 802     {
 803         if (process->exe.file) release_object( process->exe.file );
 804         process->exe.file = file;
 805     }
 806     generate_startup_debug_events( current->process, req->entry );
 807     set_event( process->init_event );
 808     release_object( process->init_event );
 809     process->init_event = NULL;
 810     if (req->gui) process->idle_event = create_event( NULL, 0, 1, 0 );
 811     if (current->suspend + current->process->suspend > 0) stop_thread( current );
 812     req->debugged = (current->process->debugger != 0);
 813 }
 814
 815 /* open a handle to a process */
 816 DECL_HANDLER(open_process)
 817 {
 818     struct process *process = get_process_from_id( req->pid );
 819     req->handle = 0;
 820     if (process)
 821     {
 822         req->handle = alloc_handle( current->process, process, req->access, req->inherit );
 823         release_object( process );
 824     }
 825 }
 826
 827 /* terminate a process */
 828 DECL_HANDLER(terminate_process)
 829 {
 830     struct process *process;
 831
 832     if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
 833     {
 834         req->self = (current->process == process);
 835         kill_process( process, current, req->exit_code );
 836         release_object( process );
 837     }
 838 }
 839
 840 /* fetch information about a process */
 841 DECL_HANDLER(get_process_info)
 842 {
 843     struct process *process;
 844
 845     if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
 846     {
 847         get_process_info( process, req );
 848         release_object( process );
 849     }
 850 }
 851
 852 /* set information about a process */
 853 DECL_HANDLER(set_process_info)
 854 {
 855     struct process *process;
 856
 857     if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
 858     {
 859         set_process_info( process, req );
 860         release_object( process );
 861     }
 862 }
 863
 864 /* read data from a process address space */
 865 DECL_HANDLER(read_process_memory)
 866 {
 867     struct process *process;
 868
 869     if ((process = get_process_from_handle( req->handle, PROCESS_VM_READ )))
 870     {
 871         size_t maxlen = get_req_data_size(req) / sizeof(int);
 872         read_process_memory( process, req->addr, req->len, maxlen, get_req_data(req) );
 873         release_object( process );
 874     }
 875 }
 876
 877 /* write data to a process address space */
 878 DECL_HANDLER(write_process_memory)
 879 {
 880     struct process *process;
 881
 882     if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
 883     {
 884         size_t maxlen = get_req_data_size(req) / sizeof(int);
 885         write_process_memory( process, req->addr, req->len, maxlen,
 886                               req->first_mask, req->last_mask, get_req_data(req) );
 887         release_object( process );
 888     }
 889 }
 890
 891 /* notify the server that a dll has been loaded */
 892 DECL_HANDLER(load_dll)
 893 {
 894     struct process_dll *dll;
 895     struct file *file = NULL;
 896
 897     if (req->handle &&
 898         !(file = get_file_obj( current->process, req->handle, GENERIC_READ ))) return;
 899
 900     if ((dll = process_load_dll( current->process, file, req->base )))
 901     {
 902         dll->dbg_offset = req->dbg_offset;
 903         dll->dbg_size   = req->dbg_size;
 904         dll->name       = req->name;
 905         /* only generate event if initialization is done */
 906         if (!current->process->init_event)
 907             generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
 908     }
 909     if (file) release_object( file );
 910 }
 911
 912 /* notify the server that a dll is being unloaded */
 913 DECL_HANDLER(unload_dll)
 914 {
 915     process_unload_dll( current->process, req->base );
 916 }
 917
 918 /* wait for a process to start waiting on input */
 919 /* FIXME: only returns event for now, wait is done in the client */
 920 DECL_HANDLER(wait_input_idle)
 921 {
 922     struct process *process;
 923
 924     req->event = 0;
 925     if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
 926     {
 927         if (process->idle_event && process != current->process && process->queue != current->queue)
 928             req->event = alloc_handle( current->process, process->idle_event,
 929                                        EVENT_ALL_ACCESS, 0 );
 930         release_object( process );
 931     }
 932 }