1 /*
2 * Server-side process management
3 *
4 * Copyright (C) 1998 Alexandre Julliard
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
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <limits.h>
26 #include <signal.h>
27 #include <string.h>
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <sys/time.h>
32 #ifdef HAVE_SYS_SOCKET_H
33 # include <sys/socket.h>
34 #endif
35 #include <unistd.h>
36 #ifdef HAVE_POLL_H
37 #include <poll.h>
38 #endif
39
40 #include "ntstatus.h"
41 #define WIN32_NO_STATUS
42 #include "winternl.h"
43
44 #include "file.h"
45 #include "handle.h"
46 #include "process.h"
47 #include "thread.h"
48 #include "request.h"
49 #include "user.h"
50 #include "security.h"
51
52 /* process structure */
53
54 static struct list process_list = LIST_INIT(process_list);
55 static int running_processes, user_processes;
56 static struct event *shutdown_event; /* signaled when shutdown starts */
57 static struct timeout_user *shutdown_timeout; /* timeout for server shutdown */
58 static int shutdown_stage; /* current stage in the shutdown process */
59
60 /* process operations */
61
62 static void process_dump( struct object *obj, int verbose );
63 static int process_signaled( struct object *obj, struct thread *thread );
64 static unsigned int process_map_access( struct object *obj, unsigned int access );
65 static void process_poll_event( struct fd *fd, int event );
66 static void process_destroy( struct object *obj );
67
68 static const struct object_ops process_ops =
69 {
70 sizeof(struct process), /* size */
71 process_dump, /* dump */
72 no_get_type, /* get_type */
73 add_queue, /* add_queue */
74 remove_queue, /* remove_queue */
75 process_signaled, /* signaled */
76 no_satisfied, /* satisfied */
77 no_signal, /* signal */
78 no_get_fd, /* get_fd */
79 process_map_access, /* map_access */
80 default_get_sd, /* get_sd */
81 default_set_sd, /* set_sd */
82 no_lookup_name, /* lookup_name */
83 no_open_file, /* open_file */
84 no_close_handle, /* close_handle */
85 process_destroy /* destroy */
86 };
87
88 static const struct fd_ops process_fd_ops =
89 {
90 NULL, /* get_poll_events */
91 process_poll_event, /* poll_event */
92 NULL, /* flush */
93 NULL, /* get_fd_type */
94 NULL, /* ioctl */
95 NULL, /* queue_async */
96 NULL, /* reselect_async */
97 NULL /* cancel async */
98 };
99
100 /* process startup info */
101
102 struct startup_info
103 {
104 struct object obj; /* object header */
105 obj_handle_t hstdin; /* handle for stdin */
106 obj_handle_t hstdout; /* handle for stdout */
107 obj_handle_t hstderr; /* handle for stderr */
108 struct file *exe_file; /* file handle for main exe */
109 struct process *process; /* created process */
110 data_size_t data_size; /* size of startup data */
111 void *data; /* data for startup info */
112 };
113
114 static void startup_info_dump( struct object *obj, int verbose );
115 static int startup_info_signaled( struct object *obj, struct thread *thread );
116 static void startup_info_destroy( struct object *obj );
117
118 static const struct object_ops startup_info_ops =
119 {
120 sizeof(struct startup_info), /* size */
121 startup_info_dump, /* dump */
122 no_get_type, /* get_type */
123 add_queue, /* add_queue */
124 remove_queue, /* remove_queue */
125 startup_info_signaled, /* signaled */
126 no_satisfied, /* satisfied */
127 no_signal, /* signal */
128 no_get_fd, /* get_fd */
129 no_map_access, /* map_access */
130 default_get_sd, /* get_sd */
131 default_set_sd, /* set_sd */
132 no_lookup_name, /* lookup_name */
133 no_open_file, /* open_file */
134 no_close_handle, /* close_handle */
135 startup_info_destroy /* destroy */
136 };
137
138
139 struct ptid_entry
140 {
141 void *ptr; /* entry ptr */
142 unsigned int next; /* next free entry */
143 };
144
145 static struct ptid_entry *ptid_entries; /* array of ptid entries */
146 static unsigned int used_ptid_entries; /* number of entries in use */
147 static unsigned int alloc_ptid_entries; /* number of allocated entries */
148 static unsigned int next_free_ptid; /* next free entry */
149 static unsigned int last_free_ptid; /* last free entry */
150
151 static void kill_all_processes(void);
152
153 #define PTID_OFFSET 8 /* offset for first ptid value */
154
155 /* allocate a new process or thread id */
156 unsigned int alloc_ptid( void *ptr )
157 {
158 struct ptid_entry *entry;
159 unsigned int id;
160
161 if (used_ptid_entries < alloc_ptid_entries)
162 {
163 id = used_ptid_entries + PTID_OFFSET;
164 entry = &ptid_entries[used_ptid_entries++];
165 }
166 else if (next_free_ptid)
167 {
168 id = next_free_ptid;
169 entry = &ptid_entries[id - PTID_OFFSET];
170 if (!(next_free_ptid = entry->next)) last_free_ptid = 0;
171 }
172 else /* need to grow the array */
173 {
174 unsigned int count = alloc_ptid_entries + (alloc_ptid_entries / 2);
175 if (!count) count = 64;
176 if (!(entry = realloc( ptid_entries, count * sizeof(*entry) )))
177 {
178 set_error( STATUS_NO_MEMORY );
179 return 0;
180 }
181 ptid_entries = entry;
182 alloc_ptid_entries = count;
183 id = used_ptid_entries + PTID_OFFSET;
184 entry = &ptid_entries[used_ptid_entries++];
185 }
186
187 entry->ptr = ptr;
188 return id;
189 }
190
191 /* free a process or thread id */
192 void free_ptid( unsigned int id )
193 {
194 struct ptid_entry *entry = &ptid_entries[id - PTID_OFFSET];
195
196 entry->ptr = NULL;
197 entry->next = 0;
198
199 /* append to end of free list so that we don't reuse it too early */
200 if (last_free_ptid) ptid_entries[last_free_ptid - PTID_OFFSET].next = id;
201 else next_free_ptid = id;
202
203 last_free_ptid = id;
204 }
205
206 /* retrieve the pointer corresponding to a process or thread id */
207 void *get_ptid_entry( unsigned int id )
208 {
209 if (id < PTID_OFFSET) return NULL;
210 if (id - PTID_OFFSET >= used_ptid_entries) return NULL;
211 return ptid_entries[id - PTID_OFFSET].ptr;
212 }
213
214 /* return the main thread of the process */
215 struct thread *get_process_first_thread( struct process *process )
216 {
217 struct list *ptr = list_head( &process->thread_list );
218 if (!ptr) return NULL;
219 return LIST_ENTRY( ptr, struct thread, proc_entry );
220 }
221
222 /* set the state of the process startup info */
223 static void set_process_startup_state( struct process *process, enum startup_state state )
224 {
225 if (process->startup_state == STARTUP_IN_PROGRESS) process->startup_state = state;
226 if (process->startup_info)
227 {
228 wake_up( &process->startup_info->obj, 0 );
229 release_object( process->startup_info );
230 process->startup_info = NULL;
231 }
232 }
233
234 /* callback for server shutdown */
235 static void server_shutdown_timeout( void *arg )
236 {
237 shutdown_timeout = NULL;
238 if (!running_processes)
239 {
240 close_master_socket( 0 );
241 return;
242 }
243 switch(++shutdown_stage)
244 {
245 case 1: /* signal system processes to exit */
246 if (debug_level) fprintf( stderr, "wineserver: shutting down\n" );
247 if (shutdown_event) set_event( shutdown_event );
248 shutdown_timeout = add_timeout_user( 2 * -TICKS_PER_SEC, server_shutdown_timeout, NULL );
249 close_master_socket( 4 * -TICKS_PER_SEC );
250 break;
251 case 2: /* now forcibly kill all processes (but still wait for SIGKILL timeouts) */
252 kill_all_processes();
253 break;
254 }
255 }
256
257 /* forced shutdown, used for wineserver -k */
258 void shutdown_master_socket(void)
259 {
260 kill_all_processes();
261 shutdown_stage = 2;
262 if (shutdown_timeout)
263 {
264 remove_timeout_user( shutdown_timeout );
265 shutdown_timeout = NULL;
266 }
267 close_master_socket( 2 * -TICKS_PER_SEC ); /* for SIGKILL timeouts */
268 }
269
270 /* final cleanup once we are sure a process is really dead */
271 static void process_died( struct process *process )
272 {
273 if (debug_level) fprintf( stderr, "%04x: *process killed*\n", process->id );
274 if (!process->is_system)
275 {
276 if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
277 shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
278 }
279 release_object( process );
280 if (!--running_processes && shutdown_stage) close_master_socket( 0 );
281 }
282
283 /* callback for process sigkill timeout */
284 static void process_sigkill( void *private )
285 {
286 struct process *process = private;
287
288 process->sigkill_timeout = NULL;
289 kill( process->unix_pid, SIGKILL );
290 process_died( process );
291 }
292
293 /* start the sigkill timer for a process upon exit */
294 static void start_sigkill_timer( struct process *process )
295 {
296 grab_object( process );
297 if (process->unix_pid != -1 && process->msg_fd)
298 process->sigkill_timeout = add_timeout_user( -TICKS_PER_SEC, process_sigkill, process );
299 else
300 process_died( process );
301 }
302
303 /* create a new process and its main thread */
304 /* if the function fails the fd is closed */
305 struct thread *create_process( int fd, struct thread *parent_thread, int inherit_all )
306 {
307 struct process *process;
308 struct thread *thread = NULL;
309 int request_pipe[2];
310
311 if (!(process = alloc_object( &process_ops )))
312 {
313 close( fd );
314 goto error;
315 }
316 process->parent = NULL;
317 process->debugger = NULL;
318 process->handles = NULL;
319 process->msg_fd = NULL;
320 process->sigkill_timeout = NULL;
321 process->unix_pid = -1;
322 process->exit_code = STILL_ACTIVE;
323 process->running_threads = 0;
324 process->priority = PROCESS_PRIOCLASS_NORMAL;
325 process->affinity = ~0;
326 process->suspend = 0;
327 process->is_system = 0;
328 process->create_flags = 0;
329 process->console = NULL;
330 process->startup_state = STARTUP_IN_PROGRESS;
331 process->startup_info = NULL;
332 process->idle_event = NULL;
333 process->queue = NULL;
334 process->peb = NULL;
335 process->ldt_copy = NULL;
336 process->winstation = 0;
337 process->desktop = 0;
338 process->token = NULL;
339 process->trace_data = 0;
340 list_init( &process->thread_list );
341 list_init( &process->locks );
342 list_init( &process->classes );
343 list_init( &process->dlls );
344
345 process->start_time = current_time;
346 process->end_time = 0;
347 list_add_tail( &process_list, &process->entry );
348
349 if (!(process->id = process->group_id = alloc_ptid( process )))
350 {
351 close( fd );
352 goto error;
353 }
354 if (!(process->msg_fd = create_anonymous_fd( &process_fd_ops, fd, &process->obj, 0 ))) goto error;
355
356 /* create the handle table */
357 if (!parent_thread)
358 {
359 process->handles = alloc_handle_table( process, 0 );
360 process->token = token_create_admin();
361 }
362 else
363 {
364 struct process *parent = parent_thread->process;
365 process->parent = (struct process *)grab_object( parent );
366 process->handles = inherit_all ? copy_handle_table( process, parent )
367 : alloc_handle_table( process, 0 );
368 /* Note: for security reasons, starting a new process does not attempt
369 * to use the current impersonation token for the new process */
370 process->token = token_duplicate( parent->token, TRUE, 0 );
371 }
372 if (!process->handles || !process->token) goto error;
373
374 /* create the main thread */
375 if (pipe( request_pipe ) == -1)
376 {
377 file_set_error();
378 goto error;
379 }
380 if (send_client_fd( process, request_pipe[1], 0 ) == -1)
381 {
382 close( request_pipe[0] );
383 close( request_pipe[1] );
384 goto error;
385 }
386 close( request_pipe[1] );
387 if (!(thread = create_thread( request_pipe[0], process ))) goto error;
388
389 set_fd_events( process->msg_fd, POLLIN ); /* start listening to events */
390 release_object( process );
391 return thread;
392
393 error:
394 if (process) release_object( process );
395 /* if we failed to start our first process, close everything down */
396 if (!running_processes) close_master_socket( 0 );
397 return NULL;
398 }
399
400 /* initialize the current process and fill in the request */
401 data_size_t init_process( struct thread *thread )
402 {
403 struct process *process = thread->process;
404 struct startup_info *info = process->startup_info;
405
406 init_process_tracing( process );
407 if (!info) return 0;
408 return info->data_size;
409 }
410
411 /* destroy a process when its refcount is 0 */
412 static void process_destroy( struct object *obj )
413 {
414 struct process *process = (struct process *)obj;
415 assert( obj->ops == &process_ops );
416
417 /* we can't have a thread remaining */
418 assert( list_empty( &process->thread_list ));
419
420 assert( !process->sigkill_timeout ); /* timeout should hold a reference to the process */
421
422 set_process_startup_state( process, STARTUP_ABORTED );
423 if (process->console) release_object( process->console );
424 if (process->parent) release_object( process->parent );
425 if (process->msg_fd) release_object( process->msg_fd );
426 list_remove( &process->entry );
427 if (process->idle_event) release_object( process->idle_event );
428 if (process->queue) release_object( process->queue );
429 if (process->id) free_ptid( process->id );
430 if (process->token) release_object( process->token );
431 }
432
433 /* dump a process on stdout for debugging purposes */
434 static void process_dump( struct object *obj, int verbose )
435 {
436 struct process *process = (struct process *)obj;
437 assert( obj->ops == &process_ops );
438
439 fprintf( stderr, "Process id=%04x handles=%p\n", process->id, process->handles );
440 }
441
442 static int process_signaled( struct object *obj, struct thread *thread )
443 {
444 struct process *process = (struct process *)obj;
445 return !process->running_threads;
446 }
447
448 static unsigned int process_map_access( struct object *obj, unsigned int access )
449 {
450 if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ | SYNCHRONIZE;
451 if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE | SYNCHRONIZE;
452 if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
453 if (access & GENERIC_ALL) access |= PROCESS_ALL_ACCESS;
454 return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
455 }
456
457 static void process_poll_event( struct fd *fd, int event )
458 {
459 struct process *process = get_fd_user( fd );
460 assert( process->obj.ops == &process_ops );
461
462 if (event & (POLLERR | POLLHUP)) kill_process( process, 0 );
463 else if (event & POLLIN) receive_fd( process );
464 }
465
466 static void startup_info_destroy( struct object *obj )
467 {
468 struct startup_info *info = (struct startup_info *)obj;
469 assert( obj->ops == &startup_info_ops );
470 free( info->data );
471 if (info->exe_file) release_object( info->exe_file );
472 if (info->process) release_object( info->process );
473 }
474
475 static void startup_info_dump( struct object *obj, int verbose )
476 {
477 struct startup_info *info = (struct startup_info *)obj;
478 assert( obj->ops == &startup_info_ops );
479
480 fprintf( stderr, "Startup info in=%p out=%p err=%p\n",
481 info->hstdin, info->hstdout, info->hstderr );
482 }
483
484 static int startup_info_signaled( struct object *obj, struct thread *thread )
485 {
486 struct startup_info *info = (struct startup_info *)obj;
487 return info->process && info->process->startup_state != STARTUP_IN_PROGRESS;
488 }
489
490 /* get a process from an id (and increment the refcount) */
491 struct process *get_process_from_id( process_id_t id )
492 {
493 struct object *obj = get_ptid_entry( id );
494
495 if (obj && obj->ops == &process_ops) return (struct process *)grab_object( obj );
496 set_error( STATUS_INVALID_PARAMETER );
497 return NULL;
498 }
499
500 /* get a process from a handle (and increment the refcount) */
501 struct process *get_process_from_handle( obj_handle_t handle, unsigned int access )
502 {
503 return (struct process *)get_handle_obj( current->process, handle,
504 access, &process_ops );
505 }
506
507 /* find a dll from its base address */
508 static inline struct process_dll *find_process_dll( struct process *process, void *base )
509 {
510 struct process_dll *dll;
511
512 LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
513 {
514 if (dll->base == base) return dll;
515 }
516 return NULL;
517 }
518
519 /* add a dll to a process list */
520 static struct process_dll *process_load_dll( struct process *process, struct file *file,
521 void *base, const WCHAR *filename, data_size_t name_len )
522 {
523 struct process_dll *dll;
524
525 /* make sure we don't already have one with the same base address */
526 if (find_process_dll( process, base ))
527 {
528 set_error( STATUS_INVALID_PARAMETER );
529 return NULL;
530 }
531
532 if ((dll = mem_alloc( sizeof(*dll) )))
533 {
534 dll->file = NULL;
535 dll->base = base;
536 dll->filename = NULL;
537 dll->namelen = name_len;
538 if (name_len && !(dll->filename = memdup( filename, name_len )))
539 {
540 free( dll );
541 return NULL;
542 }
543 if (file) dll->file = grab_file_unless_removable( file );
544 list_add_tail( &process->dlls, &dll->entry );
545 }
546 return dll;
547 }
548
549 /* remove a dll from a process list */
550 static void process_unload_dll( struct process *process, void *base )
551 {
552 struct process_dll *dll = find_process_dll( process, base );
553
554 if (dll && (&dll->entry != list_head( &process->dlls ))) /* main exe can't be unloaded */
555 {
556 if (dll->file) release_object( dll->file );
557 free( dll->filename );
558 list_remove( &dll->entry );
559 free( dll );
560 generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
561 }
562 else set_error( STATUS_INVALID_PARAMETER );
563 }
564
565 /* terminate a process with the given exit code */
566 static void terminate_process( struct process *process, struct thread *skip, int exit_code )
567 {
568 struct list *ptr;
569
570 if (skip && skip->process == process) /* move it to the end of the list */
571 {
572 assert( skip->state != TERMINATED );
573 list_remove( &skip->proc_entry );
574 list_add_tail( &process->thread_list, &skip->proc_entry );
575 }
576
577 grab_object( process ); /* make sure it doesn't get freed when threads die */
578 while ((ptr = list_head( &process->thread_list )))
579 {
580 struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
581
582 if (exit_code) thread->exit_code = exit_code;
583 if (thread == skip) break;
584 kill_thread( thread, 1 );
585 }
586 release_object( process );
587 }
588
589 /* kill all processes */
590 static void kill_all_processes(void)
591 {
592 for (;;)
593 {
594 struct process *process;
595
596 LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
597 {
598 if (process->running_threads) break;
599 }
600 if (&process->entry == &process_list) break; /* no process found */
601 terminate_process( process, NULL, 1 );
602 }
603 }
604
605 /* kill all processes being attached to a console renderer */
606 void kill_console_processes( struct thread *renderer, int exit_code )
607 {
608 for (;;) /* restart from the beginning of the list every time */
609 {
610 struct process *process;
611
612 /* find the first process being attached to 'renderer' and still running */
613 LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
614 {
615 if (process == renderer->process) continue;
616 if (!process->running_threads) continue;
617 if (process->console && console_get_renderer( process->console ) == renderer) break;
618 }
619 if (&process->entry == &process_list) break; /* no process found */
620 terminate_process( process, NULL, exit_code );
621 }
622 }
623
624 /* a process has been killed (i.e. its last thread died) */
625 static void process_killed( struct process *process )
626 {
627 struct handle_table *handles;
628 struct list *ptr;
629
630 assert( list_empty( &process->thread_list ));
631 process->end_time = current_time;
632 if (!process->is_system) close_process_desktop( process );
633 handles = process->handles;
634 process->handles = NULL;
635 if (handles) release_object( handles );
636
637 /* close the console attached to this process, if any */
638 free_console( process );
639
640 while ((ptr = list_head( &process->dlls )))
641 {
642 struct process_dll *dll = LIST_ENTRY( ptr, struct process_dll, entry );
643 if (dll->file) release_object( dll->file );
644 free( dll->filename );
645 list_remove( &dll->entry );
646 free( dll );
647 }
648 destroy_process_classes( process );
649 remove_process_locks( process );
650 set_process_startup_state( process, STARTUP_ABORTED );
651 finish_process_tracing( process );
652 start_sigkill_timer( process );
653 wake_up( &process->obj, 0 );
654 }
655
656 /* add a thread to a process running threads list */
657 void add_process_thread( struct process *process, struct thread *thread )
658 {
659 list_add_tail( &process->thread_list, &thread->proc_entry );
660 if (!process->running_threads++)
661 {
662 running_processes++;
663 if (!process->is_system)
664 {
665 if (!user_processes++ && shutdown_timeout)
666 {
667 remove_timeout_user( shutdown_timeout );
668 shutdown_timeout = NULL;
669 }
670 }
671 }
672 grab_object( thread );
673 }
674
675 /* remove a thread from a process running threads list */
676 void remove_process_thread( struct process *process, struct thread *thread )
677 {
678 assert( process->running_threads > 0 );
679 assert( !list_empty( &process->thread_list ));
680
681 list_remove( &thread->proc_entry );
682
683 if (!--process->running_threads)
684 {
685 /* we have removed the last running thread, exit the process */
686 process->exit_code = thread->exit_code;
687 generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
688 process_killed( process );
689 }
690 else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
691 release_object( thread );
692 }
693
694 /* suspend all the threads of a process */
695 void suspend_process( struct process *process )
696 {
697 if (!process->suspend++)
698 {
699 struct list *ptr, *next;
700
701 LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
702 {
703 struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
704 if (!thread->suspend) stop_thread( thread );
705 }
706 }
707 }
708
709 /* resume all the threads of a process */
710 void resume_process( struct process *process )
711 {
712 assert (process->suspend > 0);
713 if (!--process->suspend)
714 {
715 struct list *ptr, *next;
716
717 LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
718 {
719 struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
720 if (!thread->suspend) wake_thread( thread );
721 }
722 }
723 }
724
725 /* kill a process on the spot */
726 void kill_process( struct process *process, int violent_death )
727 {
728 if (!violent_death && process->msg_fd) /* normal termination on pipe close */
729 {
730 release_object( process->msg_fd );
731 process->msg_fd = NULL;
732 }
733
734 if (process->sigkill_timeout) /* already waiting for it to die */
735 {
736 remove_timeout_user( process->sigkill_timeout );
737 process->sigkill_timeout = NULL;
738 process_died( process );
739 return;
740 }
741
742 if (violent_death) terminate_process( process, NULL, 1 );
743 else
744 {
745 struct list *ptr;
746
747 grab_object( process ); /* make sure it doesn't get freed when threads die */
748 while ((ptr = list_head( &process->thread_list )))
749 {
750 struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
751 kill_thread( thread, 0 );
752 }
753 release_object( process );
754 }
755 }
756
757 /* kill all processes being debugged by a given thread */
758 void kill_debugged_processes( struct thread *debugger, int exit_code )
759 {
760 for (;;) /* restart from the beginning of the list every time */
761 {
762 struct process *process;
763
764 /* find the first process being debugged by 'debugger' and still running */
765 LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
766 {
767 if (!process->running_threads) continue;
768 if (process->debugger == debugger) break;
769 }
770 if (&process->entry == &process_list) break; /* no process found */
771 process->debugger = NULL;
772 terminate_process( process, NULL, exit_code );
773 }
774 }
775
776
777 /* trigger a breakpoint event in a given process */
778 void break_process( struct process *process )
779 {
780 struct thread *thread;
781
782 suspend_process( process );
783
784 LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
785 {
786 if (thread->context) /* inside an exception event already */
787 {
788 break_thread( thread );
789 goto done;
790 }
791 }
792 if ((thread = get_process_first_thread( process ))) thread->debug_break = 1;
793 else set_error( STATUS_ACCESS_DENIED );
794 done:
795 resume_process( process );
796 }
797
798
799 /* detach a debugger from all its debuggees */
800 void detach_debugged_processes( struct thread *debugger )
801 {
802 struct process *process;
803
804 LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
805 {
806 if (process->debugger == debugger && process->running_threads)
807 {
808 debugger_detach( process, debugger );
809 }
810 }
811 }
812
813
814 void enum_processes( int (*cb)(struct process*, void*), void *user )
815 {
816 struct list *ptr, *next;
817
818 LIST_FOR_EACH_SAFE( ptr, next, &process_list )
819 {
820 struct process *process = LIST_ENTRY( ptr, struct process, entry );
821 if ((cb)(process, user)) break;
822 }
823 }
824
825 /* set the debugged flag in the process PEB */
826 int set_process_debug_flag( struct process *process, int flag )
827 {
828 char data = (flag != 0);
829
830 /* BeingDebugged flag is the byte at offset 2 in the PEB */
831 return write_process_memory( process, (char *)process->peb + 2, 1, &data );
832 }
833
834 /* take a snapshot of currently running processes */
835 struct process_snapshot *process_snap( int *count )
836 {
837 struct process_snapshot *snapshot, *ptr;
838 struct process *process;
839
840 if (!running_processes) return NULL;
841 if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
842 return NULL;
843 ptr = snapshot;
844 LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
845 {
846 if (!process->running_threads) continue;
847 ptr->process = process;
848 ptr->threads = process->running_threads;
849 ptr->count = process->obj.refcount;
850 ptr->priority = process->priority;
851 ptr->handles = get_handle_table_count(process);
852 grab_object( process );
853 ptr++;
854 }
855
856 if (!(*count = ptr - snapshot))
857 {
858 free( snapshot );
859 snapshot = NULL;
860 }
861 return snapshot;
862 }
863
864 /* take a snapshot of the modules of a process */
865 struct module_snapshot *module_snap( struct process *process, int *count )
866 {
867 struct module_snapshot *snapshot, *ptr;
868 struct process_dll *dll;
869 int total = 0;
870
871 LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry ) total++;
872 if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
873
874 ptr = snapshot;
875 LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
876 {
877 ptr->base = dll->base;
878 ptr->size = dll->size;
879 ptr->namelen = dll->namelen;
880 ptr->filename = memdup( dll->filename, dll->namelen );
881 ptr++;
882 }
883 *count = total;
884 return snapshot;
885 }
886
887
888 /* create a new process */
889 DECL_HANDLER(new_process)
890 {
891 struct startup_info *info;
892 struct thread *thread;
893 struct process *process;
894 struct process *parent = current->process;
895 int socket_fd = thread_get_inflight_fd( current, req->socket_fd );
896
897 if (socket_fd == -1)
898 {
899 set_error( STATUS_INVALID_PARAMETER );
900 return;
901 }
902 if (fcntl( socket_fd, F_SETFL, O_NONBLOCK ) == -1)
903 {
904 set_error( STATUS_INVALID_HANDLE );
905 close( socket_fd );
906 return;
907 }
908 if (shutdown_stage)
909 {
910 set_error( STATUS_SHUTDOWN_IN_PROGRESS );
911 close( socket_fd );
912 return;
913 }
914
915 /* build the startup info for a new process */
916 if (!(info = alloc_object( &startup_info_ops ))) return;
917 info->hstdin = req->hstdin;
918 info->hstdout = req->hstdout;
919 info->hstderr = req->hstderr;
920 info->exe_file = NULL;
921 info->process = NULL;
922 info->data_size = get_req_data_size();
923 info->data = NULL;
924
925 if (req->exe_file &&
926 !(info->exe_file = get_file_obj( current->process, req->exe_file, FILE_READ_DATA )))
927 goto done;
928
929 if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
930
931 if (!(thread = create_process( socket_fd, current, req->inherit_all ))) goto done;
932 process = thread->process;
933 process->create_flags = req->create_flags;
934 process->startup_info = (struct startup_info *)grab_object( info );
935
936 /* connect to the window station */
937 connect_process_winstation( process, current );
938
939 /* thread will be actually suspended in init_done */
940 if (req->create_flags & CREATE_SUSPENDED) thread->suspend++;
941
942 /* set the process console */
943 if (!(req->create_flags & (DETACHED_PROCESS | CREATE_NEW_CONSOLE)))
944 {
945 /* FIXME: some better error checking should be done...
946 * like if hConOut and hConIn are console handles, then they should be on the same
947 * physical console
948 */
949 inherit_console( current, process, req->inherit_all ? req->hstdin : 0 );
950 }
951
952 if (!req->inherit_all && !(req->create_flags & CREATE_NEW_CONSOLE))
953 {
954 info->hstdin = duplicate_handle( parent, req->hstdin, process,
955 0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
956 info->hstdout = duplicate_handle( parent, req->hstdout, process,
957 0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
958 info->hstderr = duplicate_handle( parent, req->hstderr, process,
959 0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
960 /* some handles above may have been invalid; this is not an error */
961 if (get_error() == STATUS_INVALID_HANDLE ||
962 get_error() == STATUS_OBJECT_TYPE_MISMATCH) clear_error();
963 }
964
965 /* attach to the debugger if requested */
966 if (req->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
967 set_process_debugger( process, current );
968 else if (parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
969 set_process_debugger( process, parent->debugger );
970
971 if (!(req->create_flags & CREATE_NEW_PROCESS_GROUP))
972 process->group_id = parent->group_id;
973
974 info->process = (struct process *)grab_object( process );
975 reply->info = alloc_handle( current->process, info, SYNCHRONIZE, 0 );
976 reply->pid = get_process_id( process );
977 reply->tid = get_thread_id( thread );
978 reply->phandle = alloc_handle( parent, process, req->process_access, req->process_attr );
979 reply->thandle = alloc_handle( parent, thread, req->thread_access, req->thread_attr );
980
981 done:
982 release_object( info );
983 }
984
985 /* Retrieve information about a newly started process */
986 DECL_HANDLER(get_new_process_info)
987 {
988 struct startup_info *info;
989
990 if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
991 0, &startup_info_ops )))
992 {
993 reply->success = is_process_init_done( info->process );
994 reply->exit_code = info->process->exit_code;
995 release_object( info );
996 }
997 }
998
999 /* Retrieve the new process startup info */
1000 DECL_HANDLER(get_startup_info)
1001 {
1002 struct process *process = current->process;
1003 struct startup_info *info = process->startup_info;
1004 data_size_t size;
1005
1006 if (!info) return;
1007
1008 if (info->exe_file &&
1009 !(reply->exe_file = alloc_handle( process, info->exe_file, GENERIC_READ, 0 ))) return;
1010
1011 reply->hstdin = info->hstdin;
1012 reply->hstdout = info->hstdout;
1013 reply->hstderr = info->hstderr;
1014
1015 /* we return the data directly without making a copy so this can only be called once */
1016 size = info->data_size;
1017 if (size > get_reply_max_size()) size = get_reply_max_size();
1018 set_reply_data_ptr( info->data, size );
1019 info->data = NULL;
1020 info->data_size = 0;
1021 }
1022
1023 /* signal the end of the process initialization */
1024 DECL_HANDLER(init_process_done)
1025 {
1026 struct process_dll *dll;
1027 struct process *process = current->process;
1028
1029 if (is_process_init_done(process))
1030 {
1031 set_error( STATUS_INVALID_PARAMETER );
1032 return;
1033 }
1034 if (!(dll = find_process_dll( process, req->module )))
1035 {
1036 set_error( STATUS_DLL_NOT_FOUND );
1037 return;
1038 }
1039
1040 /* main exe is the first in the dll list */
1041 list_remove( &dll->entry );
1042 list_add_head( &process->dlls, &dll->entry );
1043
1044 generate_startup_debug_events( process, req->entry );
1045 set_process_startup_state( process, STARTUP_DONE );
1046
1047 if (req->gui) process->idle_event = create_event( NULL, NULL, 0, 1, 0, NULL );
1048 if (current->suspend + process->suspend > 0) stop_thread( current );
1049 if (process->debugger) set_process_debug_flag( process, 1 );
1050 }
1051
1052 /* open a handle to a process */
1053 DECL_HANDLER(open_process)
1054 {
1055 struct process *process = get_process_from_id( req->pid );
1056 reply->handle = 0;
1057 if (process)
1058 {
1059 reply->handle = alloc_handle( current->process, process, req->access, req->attributes );
1060 release_object( process );
1061 }
1062 }
1063
1064 /* terminate a process */
1065 DECL_HANDLER(terminate_process)
1066 {
1067 struct process *process;
1068
1069 if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
1070 {
1071 reply->self = (current->process == process);
1072 terminate_process( process, current, req->exit_code );
1073 release_object( process );
1074 }
1075 }
1076
1077 /* fetch information about a process */
1078 DECL_HANDLER(get_process_info)
1079 {
1080 struct process *process;
1081
1082 if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
1083 {
1084 reply->pid = get_process_id( process );
1085 reply->ppid = process->parent ? get_process_id( process->parent ) : 0;
1086 reply->exit_code = process->exit_code;
1087 reply->priority = process->priority;
1088 reply->affinity = process->affinity;
1089 reply->peb = process->peb;
1090 reply->start_time = process->start_time;
1091 reply->end_time = process->end_time;
1092 release_object( process );
1093 }
1094 }
1095
1096 /* set information about a process */
1097 DECL_HANDLER(set_process_info)
1098 {
1099 struct process *process;
1100
1101 if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
1102 {
1103 if (req->mask & SET_PROCESS_INFO_PRIORITY) process->priority = req->priority;
1104 if (req->mask & SET_PROCESS_INFO_AFFINITY) process->affinity = req->affinity;
1105 release_object( process );
1106 }
1107 }
1108
1109 /* read data from a process address space */
1110 DECL_HANDLER(read_process_memory)
1111 {
1112 struct process *process;
1113 data_size_t len = get_reply_max_size();
1114
1115 if (!(process = get_process_from_handle( req->handle, PROCESS_VM_READ ))) return;
1116
1117 if (len)
1118 {
1119 char *buffer = mem_alloc( len );
1120 if (buffer)
1121 {
1122 if (read_process_memory( process, req->addr, len, buffer ))
1123 set_reply_data_ptr( buffer, len );
1124 else
1125 free( buffer );
1126 }
1127 }
1128 release_object( process );
1129 }
1130
1131 /* write data to a process address space */
1132 DECL_HANDLER(write_process_memory)
1133 {
1134 struct process *process;
1135
1136 if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
1137 {
1138 data_size_t len = get_req_data_size();
1139 if (len) write_process_memory( process, req->addr, len, get_req_data() );
1140 else set_error( STATUS_INVALID_PARAMETER );
1141 release_object( process );
1142 }
1143 }
1144
1145 /* notify the server that a dll has been loaded */
1146 DECL_HANDLER(load_dll)
1147 {
1148 struct process_dll *dll;
1149 struct file *file = NULL;
1150
1151 if (req->handle && !(file = get_file_obj( current->process, req->handle, FILE_READ_DATA )))
1152 return;
1153
1154 if ((dll = process_load_dll( current->process, file, req->base,
1155 get_req_data(), get_req_data_size() )))
1156 {
1157 dll->size = req->size;
1158 dll->dbg_offset = req->dbg_offset;
1159 dll->dbg_size = req->dbg_size;
1160 dll->name = req->name;
1161 /* only generate event if initialization is done */
1162 if (is_process_init_done( current->process ))
1163 generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
1164 }
1165 if (file) release_object( file );
1166 }
1167
1168 /* notify the server that a dll is being unloaded */
1169 DECL_HANDLER(unload_dll)
1170 {
1171 process_unload_dll( current->process, req->base );
1172 }
1173
1174 /* retrieve information about a module in a process */
1175 DECL_HANDLER(get_dll_info)
1176 {
1177 struct process *process;
1178
1179 if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
1180 {
1181 struct process_dll *dll;
1182
1183 if (req->base_address)
1184 dll = find_process_dll( process, req->base_address );
1185 else /* NULL means main module */
1186 dll = list_head( &process->dlls ) ?
1187 LIST_ENTRY(list_head( &process->dlls ), struct process_dll, entry) : NULL;
1188
1189 if (dll)
1190 {
1191 reply->size = dll->size;
1192 reply->entry_point = NULL; /* FIXME */
1193 reply->filename_len = dll->namelen;
1194 if (dll->filename)
1195 {
1196 if (dll->namelen <= get_reply_max_size())
1197 set_reply_data( dll->filename, dll->namelen );
1198 else
1199 set_error( STATUS_BUFFER_TOO_SMALL );
1200 }
1201 }
1202 else
1203 set_error( STATUS_DLL_NOT_FOUND );
1204
1205 release_object( process );
1206 }
1207 }
1208
1209 /* retrieve the process idle event */
1210 DECL_HANDLER(get_process_idle_event)
1211 {
1212 struct process *process;
1213
1214 reply->event = 0;
1215 if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
1216 {
1217 if (process->idle_event && process != current->process)
1218 reply->event = alloc_handle( current->process, process->idle_event,
1219 EVENT_ALL_ACCESS, 0 );
1220 release_object( process );
1221 }
1222 }
1223
1224 /* make the current process a system process */
1225 DECL_HANDLER(make_process_system)
1226 {
1227 struct process *process = current->process;
1228
1229 if (!shutdown_event)
1230 {
1231 if (!(shutdown_event = create_event( NULL, NULL, 0, 1, 0, NULL ))) return;
1232 make_object_static( (struct object *)shutdown_event );
1233 }
1234
1235 if (!(reply->event = alloc_handle( current->process, shutdown_event, SYNCHRONIZE, 0 )))
1236 return;
1237
1238 if (!process->is_system)
1239 {
1240 process->is_system = 1;
1241 close_process_desktop( process );
1242 if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
1243 shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
1244 }
1245 }
1246
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