process.c 40.8 KB
Newer Older
Alexandre Julliard's avatar
Alexandre Julliard committed
1 2 3 4
/*
 * Server-side process management
 *
 * Copyright (C) 1998 Alexandre Julliard
5 6 7 8 9 10 11 12 13 14 15 16 17
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * 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
Alexandre Julliard's avatar
Alexandre Julliard committed
19 20
 */

21
#include "config.h"
22
#include "wine/port.h"
23

Alexandre Julliard's avatar
Alexandre Julliard committed
24
#include <assert.h>
Alexandre Julliard's avatar
Alexandre Julliard committed
25
#include <limits.h>
26
#include <signal.h>
Alexandre Julliard's avatar
Alexandre Julliard committed
27
#include <string.h>
28
#include <stdarg.h>
Alexandre Julliard's avatar
Alexandre Julliard committed
29
#include <stdio.h>
Alexandre Julliard's avatar
Alexandre Julliard committed
30
#include <stdlib.h>
Alexandre Julliard's avatar
Alexandre Julliard committed
31
#include <sys/time.h>
32 33 34
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
Alexandre Julliard's avatar
Alexandre Julliard committed
35
#include <unistd.h>
36 37 38
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
Alexandre Julliard's avatar
Alexandre Julliard committed
39

40 41
#include "ntstatus.h"
#define WIN32_NO_STATUS
42
#include "winternl.h"
Alexandre Julliard's avatar
Alexandre Julliard committed
43

44
#include "file.h"
45 46 47
#include "handle.h"
#include "process.h"
#include "thread.h"
48
#include "request.h"
49
#include "user.h"
50
#include "security.h"
Alexandre Julliard's avatar
Alexandre Julliard committed
51

52
/* process structure */
53

54
static struct list process_list = LIST_INIT(process_list);
55
static int running_processes, user_processes;
56 57
static struct event *shutdown_event;           /* signaled when shutdown starts */
static struct timeout_user *shutdown_timeout;  /* timeout for server shutdown */
58
static int shutdown_stage;  /* current stage in the shutdown process */
Alexandre Julliard's avatar
Alexandre Julliard committed
59 60 61

/* process operations */

62
static void process_dump( struct object *obj, int verbose );
Alexandre Julliard's avatar
Alexandre Julliard committed
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 );
Alexandre Julliard's avatar
Alexandre Julliard committed
67 68 69

static const struct object_ops process_ops =
{
70 71
    sizeof(struct process),      /* size */
    process_dump,                /* dump */
72
    no_get_type,                 /* get_type */
73 74 75 76
    add_queue,                   /* add_queue */
    remove_queue,                /* remove_queue */
    process_signaled,            /* signaled */
    no_satisfied,                /* satisfied */
77
    no_signal,                   /* signal */
78
    no_get_fd,                   /* get_fd */
79
    process_map_access,          /* map_access */
80 81
    default_get_sd,              /* get_sd */
    default_set_sd,              /* set_sd */
82
    no_lookup_name,              /* lookup_name */
83
    no_open_file,                /* open_file */
84
    no_close_handle,             /* close_handle */
85 86 87 88 89
    process_destroy              /* destroy */
};

static const struct fd_ops process_fd_ops =
{
90
    NULL,                        /* get_poll_events */
91
    process_poll_event,          /* poll_event */
92 93
    NULL,                        /* flush */
    NULL,                        /* get_fd_type */
94
    NULL,                        /* ioctl */
95
    NULL,                        /* queue_async */
96
    NULL,                        /* reselect_async */
97
    NULL                         /* cancel async */
Alexandre Julliard's avatar
Alexandre Julliard committed
98 99
};

100 101 102
/* process startup info */

struct startup_info
103
{
104
    struct object       obj;          /* object header */
105
    struct file        *exe_file;     /* file handle for main exe */
106
    struct process     *process;      /* created process */
107 108 109
    data_size_t         info_size;    /* size of startup info */
    data_size_t         data_size;    /* size of whole startup data */
    startup_info_t     *data;         /* data for startup info */
110
};
Alexandre Julliard's avatar
Alexandre Julliard committed
111

112 113 114 115 116
static void startup_info_dump( struct object *obj, int verbose );
static int startup_info_signaled( struct object *obj, struct thread *thread );
static void startup_info_destroy( struct object *obj );

static const struct object_ops startup_info_ops =
117
{
118 119
    sizeof(struct startup_info),   /* size */
    startup_info_dump,             /* dump */
120
    no_get_type,                   /* get_type */
121 122 123 124
    add_queue,                     /* add_queue */
    remove_queue,                  /* remove_queue */
    startup_info_signaled,         /* signaled */
    no_satisfied,                  /* satisfied */
125
    no_signal,                     /* signal */
126
    no_get_fd,                     /* get_fd */
127
    no_map_access,                 /* map_access */
128 129
    default_get_sd,                /* get_sd */
    default_set_sd,                /* set_sd */
130
    no_lookup_name,                /* lookup_name */
131
    no_open_file,                  /* open_file */
132
    no_close_handle,               /* close_handle */
133 134 135
    startup_info_destroy           /* destroy */
};

136

137 138 139 140 141 142 143 144 145 146 147 148
struct ptid_entry
{
    void        *ptr;   /* entry ptr */
    unsigned int next;  /* next free entry */
};

static struct ptid_entry *ptid_entries;     /* array of ptid entries */
static unsigned int used_ptid_entries;      /* number of entries in use */
static unsigned int alloc_ptid_entries;     /* number of allocated entries */
static unsigned int next_free_ptid;         /* next free entry */
static unsigned int last_free_ptid;         /* last free entry */

149 150
static void kill_all_processes(void);

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211
#define PTID_OFFSET 8  /* offset for first ptid value */

/* allocate a new process or thread id */
unsigned int alloc_ptid( void *ptr )
{
    struct ptid_entry *entry;
    unsigned int id;

    if (used_ptid_entries < alloc_ptid_entries)
    {
        id = used_ptid_entries + PTID_OFFSET;
        entry = &ptid_entries[used_ptid_entries++];
    }
    else if (next_free_ptid)
    {
        id = next_free_ptid;
        entry = &ptid_entries[id - PTID_OFFSET];
        if (!(next_free_ptid = entry->next)) last_free_ptid = 0;
    }
    else  /* need to grow the array */
    {
        unsigned int count = alloc_ptid_entries + (alloc_ptid_entries / 2);
        if (!count) count = 64;
        if (!(entry = realloc( ptid_entries, count * sizeof(*entry) )))
        {
            set_error( STATUS_NO_MEMORY );
            return 0;
        }
        ptid_entries = entry;
        alloc_ptid_entries = count;
        id = used_ptid_entries + PTID_OFFSET;
        entry = &ptid_entries[used_ptid_entries++];
    }

    entry->ptr = ptr;
    return id;
}

/* free a process or thread id */
void free_ptid( unsigned int id )
{
    struct ptid_entry *entry = &ptid_entries[id - PTID_OFFSET];

    entry->ptr  = NULL;
    entry->next = 0;

    /* append to end of free list so that we don't reuse it too early */
    if (last_free_ptid) ptid_entries[last_free_ptid - PTID_OFFSET].next = id;
    else next_free_ptid = id;

    last_free_ptid = id;
}

/* retrieve the pointer corresponding to a process or thread id */
void *get_ptid_entry( unsigned int id )
{
    if (id < PTID_OFFSET) return NULL;
    if (id - PTID_OFFSET >= used_ptid_entries) return NULL;
    return ptid_entries[id - PTID_OFFSET].ptr;
}

212 213 214 215 216 217 218 219
/* return the main thread of the process */
struct thread *get_process_first_thread( struct process *process )
{
    struct list *ptr = list_head( &process->thread_list );
    if (!ptr) return NULL;
    return LIST_ENTRY( ptr, struct thread, proc_entry );
}

220 221 222
/* set the state of the process startup info */
static void set_process_startup_state( struct process *process, enum startup_state state )
{
223 224 225 226 227 228 229
    if (process->startup_state == STARTUP_IN_PROGRESS) process->startup_state = state;
    if (process->startup_info)
    {
        wake_up( &process->startup_info->obj, 0 );
        release_object( process->startup_info );
        process->startup_info = NULL;
    }
230 231
}

232 233 234 235
/* callback for server shutdown */
static void server_shutdown_timeout( void *arg )
{
    shutdown_timeout = NULL;
236
    if (!running_processes)
237
    {
238 239 240 241 242 243
        close_master_socket( 0 );
        return;
    }
    switch(++shutdown_stage)
    {
    case 1:  /* signal system processes to exit */
244 245
        if (debug_level) fprintf( stderr, "wineserver: shutting down\n" );
        if (shutdown_event) set_event( shutdown_event );
246 247 248 249 250 251
        shutdown_timeout = add_timeout_user( 2 * -TICKS_PER_SEC, server_shutdown_timeout, NULL );
        close_master_socket( 4 * -TICKS_PER_SEC );
        break;
    case 2:  /* now forcibly kill all processes (but still wait for SIGKILL timeouts) */
        kill_all_processes();
        break;
252 253 254
    }
}

255 256 257 258 259 260 261 262 263 264 265 266 267
/* forced shutdown, used for wineserver -k */
void shutdown_master_socket(void)
{
    kill_all_processes();
    shutdown_stage = 2;
    if (shutdown_timeout)
    {
        remove_timeout_user( shutdown_timeout );
        shutdown_timeout = NULL;
    }
    close_master_socket( 2 * -TICKS_PER_SEC );  /* for SIGKILL timeouts */
}

268 269 270 271
/* final cleanup once we are sure a process is really dead */
static void process_died( struct process *process )
{
    if (debug_level) fprintf( stderr, "%04x: *process killed*\n", process->id );
272 273
    if (!process->is_system)
    {
274
        if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
275
            shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
276
    }
277
    release_object( process );
278
    if (!--running_processes && shutdown_stage) close_master_socket( 0 );
279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
}

/* callback for process sigkill timeout */
static void process_sigkill( void *private )
{
    struct process *process = private;

    process->sigkill_timeout = NULL;
    kill( process->unix_pid, SIGKILL );
    process_died( process );
}

/* start the sigkill timer for a process upon exit */
static void start_sigkill_timer( struct process *process )
{
    grab_object( process );
    if (process->unix_pid != -1 && process->msg_fd)
296 297 298
        process->sigkill_timeout = add_timeout_user( -TICKS_PER_SEC, process_sigkill, process );
    else
        process_died( process );
299 300
}

301
/* create a new process and its main thread */
302 303
/* if the function fails the fd is closed */
struct thread *create_process( int fd, struct thread *parent_thread, int inherit_all )
304
{
305
    struct process *process;
306
    struct thread *thread = NULL;
307
    int request_pipe[2];
308

309 310 311 312 313
    if (!(process = alloc_object( &process_ops )))
    {
        close( fd );
        goto error;
    }
314
    process->parent          = NULL;
315
    process->debugger        = NULL;
316
    process->handles         = NULL;
317
    process->msg_fd          = NULL;
318 319
    process->sigkill_timeout = NULL;
    process->unix_pid        = -1;
320
    process->exit_code       = STILL_ACTIVE;
Alexandre Julliard's avatar
Alexandre Julliard committed
321
    process->running_threads = 0;
322
    process->priority        = PROCESS_PRIOCLASS_NORMAL;
323
    process->suspend         = 0;
324
    process->is_system       = 0;
325
    process->debug_children  = 0;
326
    process->console         = NULL;
327
    process->startup_state   = STARTUP_IN_PROGRESS;
328
    process->startup_info    = NULL;
329
    process->idle_event      = NULL;
330
    process->peb             = 0;
331
    process->ldt_copy        = 0;
332
    process->winstation      = 0;
333
    process->desktop         = 0;
334
    process->token           = NULL;
335
    process->trace_data      = 0;
336
    process->rawinput_mouse  = NULL;
337
    process->rawinput_kbd    = NULL;
338
    list_init( &process->thread_list );
339
    list_init( &process->locks );
340
    list_init( &process->classes );
341
    list_init( &process->dlls );
342
    list_init( &process->rawinput_devices );
343

344
    process->start_time = current_time;
345
    process->end_time = 0;
346
    list_add_tail( &process_list, &process->entry );
347

348 349 350 351 352
    if (!(process->id = process->group_id = alloc_ptid( process )))
    {
        close( fd );
        goto error;
    }
353
    if (!(process->msg_fd = create_anonymous_fd( &process_fd_ops, fd, &process->obj, 0 ))) goto error;
354

355
    /* create the handle table */
356 357 358 359
    if (!parent_thread)
    {
        process->handles = alloc_handle_table( process, 0 );
        process->token = token_create_admin();
360
        process->affinity = ~0;
361
    }
362 363 364 365 366 367
    else
    {
        struct process *parent = parent_thread->process;
        process->parent = (struct process *)grab_object( parent );
        process->handles = inherit_all ? copy_handle_table( process, parent )
                                       : alloc_handle_table( process, 0 );
368 369 370
        /* Note: for security reasons, starting a new process does not attempt
         * to use the current impersonation token for the new process */
        process->token = token_duplicate( parent->token, TRUE, 0 );
371
        process->affinity = parent->affinity;
372
    }
373
    if (!process->handles || !process->token) goto error;
374

375
    /* create the main thread */
376 377 378 379 380
    if (pipe( request_pipe ) == -1)
    {
        file_set_error();
        goto error;
    }
381
    if (send_client_fd( process, request_pipe[1], SERVER_PROTOCOL_VERSION ) == -1)
382 383 384 385 386
    {
        close( request_pipe[0] );
        close( request_pipe[1] );
        goto error;
    }
387 388
    close( request_pipe[1] );
    if (!(thread = create_thread( request_pipe[0], process ))) goto error;
389

390
    set_fd_events( process->msg_fd, POLLIN );  /* start listening to events */
391 392 393 394
    release_object( process );
    return thread;

 error:
395 396
    if (process) release_object( process );
    /* if we failed to start our first process, close everything down */
397
    if (!running_processes) close_master_socket( 0 );
398 399 400 401
    return NULL;
}

/* initialize the current process and fill in the request */
402
data_size_t init_process( struct thread *thread )
403
{
404
    struct process *process = thread->process;
405
    struct startup_info *info = process->startup_info;
406

407
    init_process_tracing( process );
408 409
    if (!info) return 0;
    return info->data_size;
Alexandre Julliard's avatar
Alexandre Julliard committed
410 411 412
}

/* destroy a process when its refcount is 0 */
413
static void process_destroy( struct object *obj )
Alexandre Julliard's avatar
Alexandre Julliard committed
414 415 416 417
{
    struct process *process = (struct process *)obj;
    assert( obj->ops == &process_ops );

Alexandre Julliard's avatar
Alexandre Julliard committed
418
    /* we can't have a thread remaining */
419
    assert( list_empty( &process->thread_list ));
420

421 422
    assert( !process->sigkill_timeout );  /* timeout should hold a reference to the process */

423
    close_process_handles( process );
424
    set_process_startup_state( process, STARTUP_ABORTED );
425 426
    if (process->console) release_object( process->console );
    if (process->parent) release_object( process->parent );
427
    if (process->msg_fd) release_object( process->msg_fd );
428
    list_remove( &process->entry );
429
    if (process->idle_event) release_object( process->idle_event );
430
    if (process->id) free_ptid( process->id );
431
    if (process->token) release_object( process->token );
Alexandre Julliard's avatar
Alexandre Julliard committed
432 433
}

Alexandre Julliard's avatar
Alexandre Julliard committed
434
/* dump a process on stdout for debugging purposes */
435
static void process_dump( struct object *obj, int verbose )
Alexandre Julliard's avatar
Alexandre Julliard committed
436 437 438 439
{
    struct process *process = (struct process *)obj;
    assert( obj->ops == &process_ops );

440
    fprintf( stderr, "Process id=%04x handles=%p\n", process->id, process->handles );
Alexandre Julliard's avatar
Alexandre Julliard committed
441 442
}

Alexandre Julliard's avatar
Alexandre Julliard committed
443 444 445
static int process_signaled( struct object *obj, struct thread *thread )
{
    struct process *process = (struct process *)obj;
446
    return !process->running_threads;
Alexandre Julliard's avatar
Alexandre Julliard committed
447 448
}

449 450 451 452 453 454 455 456 457
static unsigned int process_map_access( struct object *obj, unsigned int access )
{
    if (access & GENERIC_READ)    access |= STANDARD_RIGHTS_READ | SYNCHRONIZE;
    if (access & GENERIC_WRITE)   access |= STANDARD_RIGHTS_WRITE | SYNCHRONIZE;
    if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
    if (access & GENERIC_ALL)     access |= PROCESS_ALL_ACCESS;
    return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
}

458
static void process_poll_event( struct fd *fd, int event )
459
{
460 461
    struct process *process = get_fd_user( fd );
    assert( process->obj.ops == &process_ops );
462

463
    if (event & (POLLERR | POLLHUP)) kill_process( process, 0 );
464 465 466
    else if (event & POLLIN) receive_fd( process );
}

467 468 469 470
static void startup_info_destroy( struct object *obj )
{
    struct startup_info *info = (struct startup_info *)obj;
    assert( obj->ops == &startup_info_ops );
471
    free( info->data );
472
    if (info->exe_file) release_object( info->exe_file );
473 474 475 476 477 478 479 480
    if (info->process) release_object( info->process );
}

static void startup_info_dump( struct object *obj, int verbose )
{
    struct startup_info *info = (struct startup_info *)obj;
    assert( obj->ops == &startup_info_ops );

481
    fprintf( stderr, "Startup info in=%04x out=%04x err=%04x\n",
482
             info->data->hstdin, info->data->hstdout, info->data->hstderr );
483 484 485 486 487
}

static int startup_info_signaled( struct object *obj, struct thread *thread )
{
    struct startup_info *info = (struct startup_info *)obj;
488
    return info->process && info->process->startup_state != STARTUP_IN_PROGRESS;
489 490
}

Alexandre Julliard's avatar
Alexandre Julliard committed
491
/* get a process from an id (and increment the refcount) */
492
struct process *get_process_from_id( process_id_t id )
Alexandre Julliard's avatar
Alexandre Julliard committed
493
{
494 495 496 497 498
    struct object *obj = get_ptid_entry( id );

    if (obj && obj->ops == &process_ops) return (struct process *)grab_object( obj );
    set_error( STATUS_INVALID_PARAMETER );
    return NULL;
Alexandre Julliard's avatar
Alexandre Julliard committed
499
}
Alexandre Julliard's avatar
Alexandre Julliard committed
500 501

/* get a process from a handle (and increment the refcount) */
502
struct process *get_process_from_handle( obj_handle_t handle, unsigned int access )
Alexandre Julliard's avatar
Alexandre Julliard committed
503 504 505 506 507
{
    return (struct process *)get_handle_obj( current->process, handle,
                                             access, &process_ops );
}

508
/* find a dll from its base address */
509
static inline struct process_dll *find_process_dll( struct process *process, mod_handle_t base )
510 511 512 513 514 515 516 517 518 519
{
    struct process_dll *dll;

    LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
    {
        if (dll->base == base) return dll;
    }
    return NULL;
}

520
/* add a dll to a process list */
521
static struct process_dll *process_load_dll( struct process *process, struct mapping *mapping,
522 523
                                             mod_handle_t base, const WCHAR *filename,
                                             data_size_t name_len )
524 525 526 527
{
    struct process_dll *dll;

    /* make sure we don't already have one with the same base address */
528
    if (find_process_dll( process, base ))
529 530 531 532 533 534 535
    {
        set_error( STATUS_INVALID_PARAMETER );
        return NULL;
    }

    if ((dll = mem_alloc( sizeof(*dll) )))
    {
536
        dll->mapping = NULL;
537
        dll->base = base;
538 539 540 541 542 543 544
        dll->filename = NULL;
        dll->namelen  = name_len;
        if (name_len && !(dll->filename = memdup( filename, name_len )))
        {
            free( dll );
            return NULL;
        }
545
        if (mapping) dll->mapping = grab_mapping_unless_removable( mapping );
546
        list_add_tail( &process->dlls, &dll->entry );
547 548 549 550 551
    }
    return dll;
}

/* remove a dll from a process list */
552
static void process_unload_dll( struct process *process, mod_handle_t base )
553
{
554
    struct process_dll *dll = find_process_dll( process, base );
555

556
    if (dll && (&dll->entry != list_head( &process->dlls )))  /* main exe can't be unloaded */
557
    {
558
        if (dll->mapping) release_object( dll->mapping );
559
        free( dll->filename );
560 561
        list_remove( &dll->entry );
        free( dll );
562
        generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, &base );
563
    }
564
    else set_error( STATUS_INVALID_PARAMETER );
565 566
}

567 568 569
/* terminate a process with the given exit code */
static void terminate_process( struct process *process, struct thread *skip, int exit_code )
{
570
    struct thread *thread;
571

572
    grab_object( process );  /* make sure it doesn't get freed when threads die */
573 574
restart:
    LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
575 576
    {
        if (exit_code) thread->exit_code = exit_code;
577 578
        if (thread == skip) continue;
        if (thread->state == TERMINATED) continue;
579
        kill_thread( thread, 1 );
580
        goto restart;
581
    }
582
    release_object( process );
583 584
}

585
/* kill all processes */
586
static void kill_all_processes(void)
587 588 589
{
    for (;;)
    {
590
        struct process *process;
591

592 593 594 595 596
        LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
        {
            if (process->running_threads) break;
        }
        if (&process->entry == &process_list) break;  /* no process found */
597
        terminate_process( process, NULL, 1 );
598 599 600
    }
}

601
/* kill all processes being attached to a console renderer */
602
void kill_console_processes( struct thread *renderer, int exit_code )
603 604 605
{
    for (;;)  /* restart from the beginning of the list every time */
    {
606
        struct process *process;
607 608

        /* find the first process being attached to 'renderer' and still running */
609
        LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
610
        {
611 612
            if (process == renderer->process) continue;
            if (!process->running_threads) continue;
613
            if (process->console && console_get_renderer( process->console ) == renderer) break;
614
        }
615
        if (&process->entry == &process_list) break;  /* no process found */
616
        terminate_process( process, NULL, exit_code );
617 618 619
    }
}

Alexandre Julliard's avatar
Alexandre Julliard committed
620
/* a process has been killed (i.e. its last thread died) */
621
static void process_killed( struct process *process )
Alexandre Julliard's avatar
Alexandre Julliard committed
622
{
623 624
    struct list *ptr;

625
    assert( list_empty( &process->thread_list ));
626
    process->end_time = current_time;
627
    if (!process->is_system) close_process_desktop( process );
628
    close_process_handles( process );
629 630
    process->winstation = 0;
    process->desktop = 0;
631 632 633 634 635
    if (process->idle_event)
    {
        release_object( process->idle_event );
        process->idle_event = NULL;
    }
636 637

    /* close the console attached to this process, if any */
638
    free_console( process );
639

640 641 642 643 644 645
    while ((ptr = list_head( &process->rawinput_devices )))
    {
        struct rawinput_device_entry *entry = LIST_ENTRY( ptr, struct rawinput_device_entry, entry );
        list_remove( &entry->entry );
        free( entry );
    }
646
    while ((ptr = list_head( &process->dlls )))
647
    {
648
        struct process_dll *dll = LIST_ENTRY( ptr, struct process_dll, entry );
649
        if (dll->mapping) release_object( dll->mapping );
650
        free( dll->filename );
651
        list_remove( &dll->entry );
652 653
        free( dll );
    }
654
    destroy_process_classes( process );
655
    free_process_user_handles( process );
656
    remove_process_locks( process );
657
    set_process_startup_state( process, STARTUP_ABORTED );
658
    finish_process_tracing( process );
659
    start_sigkill_timer( process );
Alexandre Julliard's avatar
Alexandre Julliard committed
660
    wake_up( &process->obj, 0 );
Alexandre Julliard's avatar
Alexandre Julliard committed
661 662 663 664 665
}

/* add a thread to a process running threads list */
void add_process_thread( struct process *process, struct thread *thread )
{
666
    list_add_tail( &process->thread_list, &thread->proc_entry );
667 668 669 670 671
    if (!process->running_threads++)
    {
        running_processes++;
        if (!process->is_system)
        {
672 673 674 675 676
            if (!user_processes++ && shutdown_timeout)
            {
                remove_timeout_user( shutdown_timeout );
                shutdown_timeout = NULL;
            }
677 678
        }
    }
Alexandre Julliard's avatar
Alexandre Julliard committed
679 680 681 682 683 684 685
    grab_object( thread );
}

/* remove a thread from a process running threads list */
void remove_process_thread( struct process *process, struct thread *thread )
{
    assert( process->running_threads > 0 );
686
    assert( !list_empty( &process->thread_list ));
Alexandre Julliard's avatar
Alexandre Julliard committed
687

688
    list_remove( &thread->proc_entry );
Alexandre Julliard's avatar
Alexandre Julliard committed
689 690 691 692

    if (!--process->running_threads)
    {
        /* we have removed the last running thread, exit the process */
693 694 695
        process->exit_code = thread->exit_code;
        generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
        process_killed( process );
Alexandre Julliard's avatar
Alexandre Julliard committed
696
    }
697
    else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
Alexandre Julliard's avatar
Alexandre Julliard committed
698 699 700
    release_object( thread );
}

701 702 703 704 705
/* suspend all the threads of a process */
void suspend_process( struct process *process )
{
    if (!process->suspend++)
    {
706 707 708
        struct list *ptr, *next;

        LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
709
        {
710
            struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
711
            if (!thread->suspend) stop_thread( thread );
712 713 714 715 716 717 718 719 720 721
        }
    }
}

/* resume all the threads of a process */
void resume_process( struct process *process )
{
    assert (process->suspend > 0);
    if (!--process->suspend)
    {
722 723 724
        struct list *ptr, *next;

        LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
725
        {
726
            struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
727
            if (!thread->suspend) wake_thread( thread );
728 729 730 731
        }
    }
}

Alexandre Julliard's avatar
Alexandre Julliard committed
732
/* kill a process on the spot */
733
void kill_process( struct process *process, int violent_death )
Alexandre Julliard's avatar
Alexandre Julliard committed
734
{
735 736 737 738 739 740 741 742 743 744 745 746 747 748
    if (!violent_death && process->msg_fd)  /* normal termination on pipe close */
    {
        release_object( process->msg_fd );
        process->msg_fd = NULL;
    }

    if (process->sigkill_timeout)  /* already waiting for it to die */
    {
        remove_timeout_user( process->sigkill_timeout );
        process->sigkill_timeout = NULL;
        process_died( process );
        return;
    }

749 750
    if (violent_death) terminate_process( process, NULL, 1 );
    else
751
    {
752
        struct list *ptr;
753

754 755
        grab_object( process );  /* make sure it doesn't get freed when threads die */
        while ((ptr = list_head( &process->thread_list )))
756 757 758 759
        {
            struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
            kill_thread( thread, 0 );
        }
760
        release_object( process );
761
    }
Alexandre Julliard's avatar
Alexandre Julliard committed
762 763
}

764 765 766 767 768
/* kill all processes being debugged by a given thread */
void kill_debugged_processes( struct thread *debugger, int exit_code )
{
    for (;;)  /* restart from the beginning of the list every time */
    {
769 770
        struct process *process;

771
        /* find the first process being debugged by 'debugger' and still running */
772 773 774 775 776 777
        LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
        {
            if (!process->running_threads) continue;
            if (process->debugger == debugger) break;
        }
        if (&process->entry == &process_list) break;  /* no process found */
778
        process->debugger = NULL;
779
        terminate_process( process, NULL, exit_code );
780 781 782
    }
}

783

784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
/* trigger a breakpoint event in a given process */
void break_process( struct process *process )
{
    struct thread *thread;

    suspend_process( process );

    LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
    {
        if (thread->context)  /* inside an exception event already */
        {
            break_thread( thread );
            goto done;
        }
    }
    if ((thread = get_process_first_thread( process ))) thread->debug_break = 1;
    else set_error( STATUS_ACCESS_DENIED );
done:
    resume_process( process );
}


806 807 808 809
/* detach a debugger from all its debuggees */
void detach_debugged_processes( struct thread *debugger )
{
    struct process *process;
810 811

    LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
812 813 814 815 816 817 818 819 820
    {
        if (process->debugger == debugger && process->running_threads)
        {
            debugger_detach( process, debugger );
        }
    }
}


821 822
void enum_processes( int (*cb)(struct process*, void*), void *user )
{
823 824 825
    struct list *ptr, *next;

    LIST_FOR_EACH_SAFE( ptr, next, &process_list )
826
    {
827
        struct process *process = LIST_ENTRY( ptr, struct process, entry );
828 829 830 831
        if ((cb)(process, user)) break;
    }
}

832 833 834
/* set the debugged flag in the process PEB */
int set_process_debug_flag( struct process *process, int flag )
{
835
    char data = (flag != 0);
836 837

    /* BeingDebugged flag is the byte at offset 2 in the PEB */
838
    return write_process_memory( process, process->peb + 2, 1, &data );
839 840
}

841 842 843 844 845
/* take a snapshot of currently running processes */
struct process_snapshot *process_snap( int *count )
{
    struct process_snapshot *snapshot, *ptr;
    struct process *process;
846

847 848 849 850
    if (!running_processes) return NULL;
    if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
        return NULL;
    ptr = snapshot;
851
    LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
852 853 854 855
    {
        if (!process->running_threads) continue;
        ptr->process  = process;
        ptr->threads  = process->running_threads;
856
        ptr->count    = process->obj.refcount;
857
        ptr->priority = process->priority;
858
        ptr->handles  = get_handle_table_count(process);
859
        ptr->unix_pid = process->unix_pid;
860 861 862
        grab_object( process );
        ptr++;
    }
863 864 865 866 867 868

    if (!(*count = ptr - snapshot))
    {
        free( snapshot );
        snapshot = NULL;
    }
869 870
    return snapshot;
}
871 872 873 874

/* create a new process */
DECL_HANDLER(new_process)
{
875
    struct startup_info *info;
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
    struct thread *thread;
    struct process *process;
    struct process *parent = current->process;
    int socket_fd = thread_get_inflight_fd( current, req->socket_fd );

    if (socket_fd == -1)
    {
        set_error( STATUS_INVALID_PARAMETER );
        return;
    }
    if (fcntl( socket_fd, F_SETFL, O_NONBLOCK ) == -1)
    {
        set_error( STATUS_INVALID_HANDLE );
        close( socket_fd );
        return;
    }
892
    if (shutdown_stage)
893 894 895 896 897
    {
        set_error( STATUS_SHUTDOWN_IN_PROGRESS );
        close( socket_fd );
        return;
    }
898

899 900 901 902 903 904
    if (!req->info_size)  /* create an orphaned process */
    {
        create_process( socket_fd, NULL, 0 );
        return;
    }

905
    /* build the startup info for a new process */
906
    if (!(info = alloc_object( &startup_info_ops ))) return;
907 908 909
    info->exe_file = NULL;
    info->process  = NULL;
    info->data     = NULL;
910

911
    if (req->exe_file &&
912
        !(info->exe_file = get_file_obj( current->process, req->exe_file, FILE_READ_DATA )))
913 914
        goto done;

915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
    info->data_size = get_req_data_size();
    info->info_size = min( req->info_size, info->data_size );

    if (req->info_size < sizeof(*info->data))
    {
        /* make sure we have a full startup_info_t structure */
        data_size_t env_size = info->data_size - info->info_size;
        data_size_t info_size = min( req->info_size, FIELD_OFFSET( startup_info_t, curdir_len ));

        if (!(info->data = mem_alloc( sizeof(*info->data) + env_size ))) goto done;
        memcpy( info->data, get_req_data(), info_size );
        memset( (char *)info->data + info_size, 0, sizeof(*info->data) - info_size );
        memcpy( info->data + 1, (const char *)get_req_data() + req->info_size, env_size );
        info->info_size = sizeof(startup_info_t);
        info->data_size = info->info_size + env_size;
    }
    else
    {
        data_size_t pos = sizeof(*info->data);

        if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
#define FIXUP_LEN(len) do { (len) = min( (len), info->info_size - pos ); pos += (len); } while(0)
        FIXUP_LEN( info->data->curdir_len );
        FIXUP_LEN( info->data->dllpath_len );
        FIXUP_LEN( info->data->imagepath_len );
        FIXUP_LEN( info->data->cmdline_len );
        FIXUP_LEN( info->data->title_len );
        FIXUP_LEN( info->data->desktop_len );
        FIXUP_LEN( info->data->shellinfo_len );
        FIXUP_LEN( info->data->runtime_len );
#undef FIXUP_LEN
    }
947 948 949

    if (!(thread = create_process( socket_fd, current, req->inherit_all ))) goto done;
    process = thread->process;
950
    process->debug_children = !(req->create_flags & DEBUG_ONLY_THIS_PROCESS);
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
    process->startup_info = (struct startup_info *)grab_object( info );

    /* connect to the window station */
    connect_process_winstation( process, current );

    /* thread will be actually suspended in init_done */
    if (req->create_flags & CREATE_SUSPENDED) thread->suspend++;

    /* set the process console */
    if (!(req->create_flags & (DETACHED_PROCESS | CREATE_NEW_CONSOLE)))
    {
        /* FIXME: some better error checking should be done...
         * like if hConOut and hConIn are console handles, then they should be on the same
         * physical console
         */
966
        inherit_console( current, process, req->inherit_all ? info->data->hstdin : 0 );
967 968 969 970
    }

    if (!req->inherit_all && !(req->create_flags & CREATE_NEW_CONSOLE))
    {
971 972 973 974 975 976
        info->data->hstdin  = duplicate_handle( parent, info->data->hstdin, process,
                                                0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
        info->data->hstdout = duplicate_handle( parent, info->data->hstdout, process,
                                                0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
        info->data->hstderr = duplicate_handle( parent, info->data->hstderr, process,
                                                0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
977 978 979 980 981 982 983 984
        /* some handles above may have been invalid; this is not an error */
        if (get_error() == STATUS_INVALID_HANDLE ||
            get_error() == STATUS_OBJECT_TYPE_MISMATCH) clear_error();
    }

    /* attach to the debugger if requested */
    if (req->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
        set_process_debugger( process, current );
985
    else if (parent->debugger && parent->debug_children)
986 987 988 989 990 991
        set_process_debugger( process, parent->debugger );

    if (!(req->create_flags & CREATE_NEW_PROCESS_GROUP))
        process->group_id = parent->group_id;

    info->process = (struct process *)grab_object( process );
992
    reply->info = alloc_handle( current->process, info, SYNCHRONIZE, 0 );
993 994 995 996
    reply->pid = get_process_id( process );
    reply->tid = get_thread_id( thread );
    reply->phandle = alloc_handle( parent, process, req->process_access, req->process_attr );
    reply->thandle = alloc_handle( parent, thread, req->thread_access, req->thread_attr );
997 998 999

 done:
    release_object( info );
1000
}
1001

1002 1003
/* Retrieve information about a newly started process */
DECL_HANDLER(get_new_process_info)
1004
{
1005 1006 1007 1008
    struct startup_info *info;

    if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
                                                       0, &startup_info_ops )))
1009
    {
1010
        reply->success = is_process_init_done( info->process );
1011
        reply->exit_code = info->process->exit_code;
1012
        release_object( info );
1013
    }
1014 1015
}

1016 1017 1018
/* Retrieve the new process startup info */
DECL_HANDLER(get_startup_info)
{
1019 1020
    struct process *process = current->process;
    struct startup_info *info = process->startup_info;
1021
    data_size_t size;
1022

1023 1024 1025 1026 1027 1028
    if (!info) return;

    if (info->exe_file &&
        !(reply->exe_file = alloc_handle( process, info->exe_file, GENERIC_READ, 0 ))) return;

    /* we return the data directly without making a copy so this can only be called once */
1029
    reply->info_size = info->info_size;
1030 1031 1032 1033 1034
    size = info->data_size;
    if (size > get_reply_max_size()) size = get_reply_max_size();
    set_reply_data_ptr( info->data, size );
    info->data = NULL;
    info->data_size = 0;
1035 1036
}

1037 1038 1039
/* signal the end of the process initialization */
DECL_HANDLER(init_process_done)
{
1040
    struct process_dll *dll;
1041
    struct process *process = current->process;
1042

1043
    if (is_process_init_done(process))
1044
    {
1045
        set_error( STATUS_INVALID_PARAMETER );
1046 1047
        return;
    }
1048
    if (!(dll = find_process_dll( process, req->module )))
1049
    {
1050 1051
        set_error( STATUS_DLL_NOT_FOUND );
        return;
1052
    }
1053

1054 1055 1056 1057
    /* main exe is the first in the dll list */
    list_remove( &dll->entry );
    list_add_head( &process->dlls, &dll->entry );

1058 1059
    process->ldt_copy = req->ldt_copy;

1060 1061 1062
    generate_startup_debug_events( process, req->entry );
    set_process_startup_state( process, STARTUP_DONE );

1063
    if (req->gui) process->idle_event = create_event( NULL, NULL, 0, 1, 0, NULL );
1064
    stop_thread_if_suspended( current );
1065
    if (process->debugger) set_process_debug_flag( process, 1 );
1066 1067
}

1068 1069 1070 1071
/* open a handle to a process */
DECL_HANDLER(open_process)
{
    struct process *process = get_process_from_id( req->pid );
1072
    reply->handle = 0;
1073 1074
    if (process)
    {
1075
        reply->handle = alloc_handle( current->process, process, req->access, req->attributes );
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
        release_object( process );
    }
}

/* terminate a process */
DECL_HANDLER(terminate_process)
{
    struct process *process;

    if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
    {
1087
        reply->self = (current->process == process);
1088
        terminate_process( process, current, req->exit_code );
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
        release_object( process );
    }
}

/* fetch information about a process */
DECL_HANDLER(get_process_info)
{
    struct process *process;

    if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
    {
1100
        reply->pid              = get_process_id( process );
1101
        reply->ppid             = process->parent ? get_process_id( process->parent ) : 0;
1102 1103
        reply->exit_code        = process->exit_code;
        reply->priority         = process->priority;
1104
        reply->affinity         = process->affinity;
1105
        reply->peb              = process->peb;
1106 1107
        reply->start_time       = process->start_time;
        reply->end_time         = process->end_time;
1108
        reply->cpu              = process->cpu;
1109
        reply->debugger_present = !!process->debugger;
1110 1111 1112 1113
        release_object( process );
    }
}

1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
static void set_process_affinity( struct process *process, affinity_t affinity )
{
    struct thread *thread;

    process->affinity = affinity;

    LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
    {
        set_thread_affinity( thread, affinity );
    }
}

1126 1127 1128 1129 1130 1131 1132
/* set information about a process */
DECL_HANDLER(set_process_info)
{
    struct process *process;

    if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
    {
1133
        if (req->mask & SET_PROCESS_INFO_PRIORITY) process->priority = req->priority;
1134
        if (req->mask & SET_PROCESS_INFO_AFFINITY) set_process_affinity( process, req->affinity );
1135 1136 1137
        release_object( process );
    }
}
1138 1139 1140 1141 1142

/* read data from a process address space */
DECL_HANDLER(read_process_memory)
{
    struct process *process;
1143
    data_size_t len = get_reply_max_size();
1144

1145 1146 1147
    if (!(process = get_process_from_handle( req->handle, PROCESS_VM_READ ))) return;

    if (len)
1148
    {
1149
        char *buffer = mem_alloc( len );
1150 1151
        if (buffer)
        {
1152
            if (read_process_memory( process, req->addr, len, buffer ))
1153
                set_reply_data_ptr( buffer, len );
1154 1155
            else
                free( buffer );
1156
        }
1157
    }
1158
    release_object( process );
1159
}
1160 1161 1162 1163 1164 1165 1166 1167

/* write data to a process address space */
DECL_HANDLER(write_process_memory)
{
    struct process *process;

    if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
    {
1168
        data_size_t len = get_req_data_size();
1169 1170
        if (len) write_process_memory( process, req->addr, len, get_req_data() );
        else set_error( STATUS_INVALID_PARAMETER );
1171 1172 1173
        release_object( process );
    }
}
1174 1175 1176 1177 1178

/* notify the server that a dll has been loaded */
DECL_HANDLER(load_dll)
{
    struct process_dll *dll;
1179
    struct mapping *mapping = NULL;
1180

1181
    if (req->mapping && !(mapping = get_mapping_obj( current->process, req->mapping, SECTION_QUERY )))
1182
        return;
1183

1184
    if ((dll = process_load_dll( current->process, mapping, req->base,
1185
                                 get_req_data(), get_req_data_size() )))
1186
    {
1187
        dll->size       = req->size;
1188 1189 1190 1191
        dll->dbg_offset = req->dbg_offset;
        dll->dbg_size   = req->dbg_size;
        dll->name       = req->name;
        /* only generate event if initialization is done */
1192
        if (is_process_init_done( current->process ))
1193 1194
            generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
    }
1195
    if (mapping) release_object( mapping );
1196 1197 1198 1199 1200 1201 1202
}

/* notify the server that a dll is being unloaded */
DECL_HANDLER(unload_dll)
{
    process_unload_dll( current->process, req->base );
}
1203

1204 1205 1206 1207 1208 1209 1210
/* retrieve information about a module in a process */
DECL_HANDLER(get_dll_info)
{
    struct process *process;

    if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
    {
1211 1212 1213 1214 1215 1216 1217
        struct process_dll *dll;

        if (req->base_address)
            dll = find_process_dll( process, req->base_address );
        else /* NULL means main module */
            dll = list_head( &process->dlls ) ?
                LIST_ENTRY(list_head( &process->dlls ), struct process_dll, entry) : NULL;
1218

1219
        if (dll)
1220
        {
1221
            reply->size = dll->size;
1222
            reply->entry_point = 0; /* FIXME */
1223
            reply->filename_len = dll->namelen;
1224
            if (dll->filename)
1225
            {
1226 1227 1228 1229
                if (dll->namelen <= get_reply_max_size())
                    set_reply_data( dll->filename, dll->namelen );
                else
                    set_error( STATUS_BUFFER_TOO_SMALL );
1230 1231
            }
        }
1232 1233 1234
        else
            set_error( STATUS_DLL_NOT_FOUND );

1235 1236 1237 1238
        release_object( process );
    }
}

1239 1240
/* retrieve the process idle event */
DECL_HANDLER(get_process_idle_event)
1241 1242 1243
{
    struct process *process;

1244
    reply->event = 0;
1245 1246
    if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
    {
1247
        if (process->idle_event && process != current->process)
1248 1249
            reply->event = alloc_handle( current->process, process->idle_event,
                                         EVENT_ALL_ACCESS, 0 );
1250 1251 1252
        release_object( process );
    }
}
1253 1254 1255 1256 1257 1258

/* make the current process a system process */
DECL_HANDLER(make_process_system)
{
    struct process *process = current->process;

1259
    if (!shutdown_event)
1260
    {
1261 1262
        if (!(shutdown_event = create_event( NULL, NULL, 0, 1, 0, NULL ))) return;
        make_object_static( (struct object *)shutdown_event );
1263 1264
    }

1265
    if (!(reply->event = alloc_handle( current->process, shutdown_event, SYNCHRONIZE, 0 )))
1266 1267 1268 1269 1270
        return;

    if (!process->is_system)
    {
        process->is_system = 1;
1271
        close_process_desktop( process );
1272
        if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
1273
            shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
1274 1275
    }
}