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wine/server/process.c
Alexandre Julliard 90af5a0d17 server: Connect to the window station and desktop specified by startup info. 
If window station and desktop aren't inherited from the parent, don't
connect to them from the server, but from the USER init code where we
can get the proper values from the startup info structure.
2006-03-27 12:57:17 +02:00

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/*
* Server-side process management
*
* Copyright (C) 1998 Alexandre Julliard
*
* 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
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <limits.h>
#include <signal.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#include <unistd.h>
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "winternl.h"
#include "file.h"
#include "handle.h"
#include "process.h"
#include "thread.h"
#include "request.h"
#include "console.h"
#include "user.h"
#include "security.h"
/* process structure */
static struct list process_list = LIST_INIT(process_list);
static int running_processes;
/* process operations */
static void process_dump( struct object *obj, int verbose );
static int process_signaled( struct object *obj, struct thread *thread );
static unsigned int process_map_access( struct object *obj, unsigned int access );
static void process_poll_event( struct fd *fd, int event );
static void process_destroy( struct object *obj );
static const struct object_ops process_ops =
{
sizeof(struct process), /* size */
process_dump, /* dump */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
process_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
process_map_access, /* map_access */
no_lookup_name, /* lookup_name */
no_close_handle, /* close_handle */
process_destroy /* destroy */
};
static const struct fd_ops process_fd_ops =
{
NULL, /* get_poll_events */
process_poll_event, /* poll_event */
no_flush, /* flush */
no_get_file_info, /* get_file_info */
no_queue_async, /* queue_async */
no_cancel_async /* cancel async */
};
/* process startup info */
struct startup_info
{
struct object obj; /* object header */
struct list entry; /* entry in list of startup infos */
int inherit_all; /* inherit all handles from parent */
unsigned int create_flags; /* creation flags */
int unix_pid; /* Unix pid of new process */
obj_handle_t hstdin; /* handle for stdin */
obj_handle_t hstdout; /* handle for stdout */
obj_handle_t hstderr; /* handle for stderr */
struct file *exe_file; /* file handle for main exe */
struct thread *owner; /* owner thread (the one that created the new process) */
struct process *process; /* created process */
struct thread *thread; /* created thread */
size_t data_size; /* size of startup data */
void *data; /* data for startup info */
};
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 =
{
sizeof(struct startup_info), /* size */
startup_info_dump, /* dump */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
startup_info_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
no_map_access, /* map_access */
no_lookup_name, /* lookup_name */
no_close_handle, /* close_handle */
startup_info_destroy /* destroy */
};
static struct list startup_info_list = LIST_INIT(startup_info_list);
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 */
#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;
}
/* 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 );
}
/* set the state of the process startup info */
static void set_process_startup_state( struct process *process, enum startup_state state )
{
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;
}
}
/* create a new process and its main thread */
struct thread *create_process( int fd )
{
struct process *process;
struct thread *thread = NULL;
int request_pipe[2];
if (!(process = alloc_object( &process_ops ))) goto error;
process->parent = NULL;
process->debugger = NULL;
process->handles = NULL;
process->msg_fd = NULL;
process->exit_code = STILL_ACTIVE;
process->running_threads = 0;
process->priority = PROCESS_PRIOCLASS_NORMAL;
process->affinity = 1;
process->suspend = 0;
process->create_flags = 0;
process->console = NULL;
process->startup_state = STARTUP_IN_PROGRESS;
process->startup_info = NULL;
process->idle_event = NULL;
process->queue = NULL;
process->peb = NULL;
process->ldt_copy = NULL;
process->winstation = 0;
process->desktop = 0;
process->token = token_create_admin();
list_init( &process->thread_list );
list_init( &process->locks );
list_init( &process->classes );
list_init( &process->dlls );
gettimeofday( &process->start_time, NULL );
list_add_head( &process_list, &process->entry );
if (!(process->id = process->group_id = alloc_ptid( process ))) goto error;
if (!(process->msg_fd = create_anonymous_fd( &process_fd_ops, fd, &process->obj ))) goto error;
/* create the main thread */
if (pipe( request_pipe ) == -1)
{
file_set_error();
goto error;
}
if (send_client_fd( process, request_pipe[1], 0 ) == -1)
{
close( request_pipe[0] );
close( request_pipe[1] );
goto error;
}
close( request_pipe[1] );
if (!(thread = create_thread( request_pipe[0], process ))) goto error;
set_fd_events( process->msg_fd, POLLIN ); /* start listening to events */
release_object( process );
return thread;
error:
if (process) release_object( process );
/* if we failed to start our first process, close everything down */
if (!running_processes) close_master_socket();
return NULL;
}
/* find the startup info for a given Unix process */
inline static struct startup_info *find_startup_info( int unix_pid )
{
struct list *ptr;
LIST_FOR_EACH( ptr, &startup_info_list )
{
struct startup_info *info = LIST_ENTRY( ptr, struct startup_info, entry );
if (info->unix_pid == unix_pid) return info;
}
return NULL;
}
/* initialize the current process and fill in the request */
size_t init_process( struct thread *thread )
{
struct process *process = thread->process;
struct thread *parent_thread = NULL;
struct process *parent = NULL;
struct startup_info *info;
if (process->startup_info) return process->startup_info->data_size; /* already initialized */
if ((info = find_startup_info( thread->unix_pid )))
{
if (info->thread) return info->data_size; /* already initialized */
info->thread = (struct thread *)grab_object( thread );
info->process = (struct process *)grab_object( process );
process->startup_info = (struct startup_info *)grab_object( info );
parent_thread = info->owner;
parent = parent_thread->process;
process->parent = (struct process *)grab_object( parent );
/* set the process flags */
process->create_flags = info->create_flags;
if (info->inherit_all) process->handles = copy_handle_table( process, parent );
}
/* create the handle table */
if (!process->handles) process->handles = alloc_handle_table( process, 0 );
if (!process->handles)
{
fatal_protocol_error( thread, "Failed to allocate handle table\n" );
return 0;
}
/* connect to the window station */
connect_process_winstation( process, parent_thread );
if (!info) return 0;
/* thread will be actually suspended in init_done */
if (info->create_flags & CREATE_SUSPENDED) thread->suspend++;
/* set the process console */
if (!(info->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
*/
inherit_console( parent_thread, process, info->inherit_all ? info->hstdin : 0 );
}
/* attach to the debugger if requested */
if (process->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
set_process_debugger( process, parent_thread );
else if (parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
set_process_debugger( process, parent->debugger );
if (!(process->create_flags & CREATE_NEW_PROCESS_GROUP))
process->group_id = parent->group_id;
return info->data_size;
}
/* destroy a process when its refcount is 0 */
static void process_destroy( struct object *obj )
{
struct process *process = (struct process *)obj;
assert( obj->ops == &process_ops );
/* we can't have a thread remaining */
assert( list_empty( &process->thread_list ));
set_process_startup_state( process, STARTUP_ABORTED );
if (process->console) release_object( process->console );
if (process->parent) release_object( process->parent );
if (process->msg_fd) release_object( process->msg_fd );
list_remove( &process->entry );
if (process->idle_event) release_object( process->idle_event );
if (process->queue) release_object( process->queue );
if (process->id) free_ptid( process->id );
if (process->token) release_object( process->token );
}
/* dump a process on stdout for debugging purposes */
static void process_dump( struct object *obj, int verbose )
{
struct process *process = (struct process *)obj;
assert( obj->ops == &process_ops );
fprintf( stderr, "Process id=%04x handles=%p\n", process->id, process->handles );
}
static int process_signaled( struct object *obj, struct thread *thread )
{
struct process *process = (struct process *)obj;
return !process->running_threads;
}
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);
}
static void process_poll_event( struct fd *fd, int event )
{
struct process *process = get_fd_user( fd );
assert( process->obj.ops == &process_ops );
if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
else if (event & POLLIN) receive_fd( process );
}
static void startup_info_destroy( struct object *obj )
{
struct startup_info *info = (struct startup_info *)obj;
assert( obj->ops == &startup_info_ops );
list_remove( &info->entry );
if (info->data) free( info->data );
if (info->exe_file) release_object( info->exe_file );
if (info->process) release_object( info->process );
if (info->thread) release_object( info->thread );
if (info->owner) release_object( info->owner );
}
static void startup_info_dump( struct object *obj, int verbose )
{
struct startup_info *info = (struct startup_info *)obj;
assert( obj->ops == &startup_info_ops );
fprintf( stderr, "Startup info flags=%x in=%p out=%p err=%p\n",
info->create_flags, info->hstdin, info->hstdout, info->hstderr );
}
static int startup_info_signaled( struct object *obj, struct thread *thread )
{
struct startup_info *info = (struct startup_info *)obj;
return info->process && info->process->startup_state != STARTUP_IN_PROGRESS;
}
/* get a process from an id (and increment the refcount) */
struct process *get_process_from_id( process_id_t id )
{
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;
}
/* get a process from a handle (and increment the refcount) */
struct process *get_process_from_handle( obj_handle_t handle, unsigned int access )
{
return (struct process *)get_handle_obj( current->process, handle,
access, &process_ops );
}
/* find a dll from its base address */
static inline struct process_dll *find_process_dll( struct process *process, void *base )
{
struct process_dll *dll;
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
{
if (dll->base == base) return dll;
}
return NULL;
}
/* add a dll to a process list */
static struct process_dll *process_load_dll( struct process *process, struct file *file,
void *base, const WCHAR *filename, size_t name_len )
{
struct process_dll *dll;
/* make sure we don't already have one with the same base address */
if (find_process_dll( process, base ))
{
set_error( STATUS_INVALID_PARAMETER );
return NULL;
}
if ((dll = mem_alloc( sizeof(*dll) )))
{
dll->file = NULL;
dll->base = base;
dll->filename = NULL;
dll->namelen = name_len;
if (name_len && !(dll->filename = memdup( filename, name_len )))
{
free( dll );
return NULL;
}
if (file) dll->file = (struct file *)grab_object( file );
list_add_tail( &process->dlls, &dll->entry );
}
return dll;
}
/* remove a dll from a process list */
static void process_unload_dll( struct process *process, void *base )
{
struct process_dll *dll = find_process_dll( process, base );
if (dll && (&dll->entry != list_head( &process->dlls ))) /* main exe can't be unloaded */
{
if (dll->file) release_object( dll->file );
if (dll->filename) free( dll->filename );
list_remove( &dll->entry );
free( dll );
generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
}
else set_error( STATUS_INVALID_PARAMETER );
}
/* kill all processes */
void kill_all_processes( struct process *skip, int exit_code )
{
for (;;)
{
struct process *process;
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
{
if (process == skip) continue;
if (process->running_threads) break;
}
if (&process->entry == &process_list) break; /* no process found */
kill_process( process, NULL, exit_code );
}
}
/* kill all processes being attached to a console renderer */
void kill_console_processes( struct thread *renderer, int exit_code )
{
for (;;) /* restart from the beginning of the list every time */
{
struct process *process;
/* find the first process being attached to 'renderer' and still running */
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
{
if (process == renderer->process) continue;
if (!process->running_threads) continue;
if (process->console && process->console->renderer == renderer) break;
}
if (&process->entry == &process_list) break; /* no process found */
kill_process( process, NULL, exit_code );
}
}
/* a process has been killed (i.e. its last thread died) */
static void process_killed( struct process *process )
{
struct handle_table *handles;
struct list *ptr;
assert( list_empty( &process->thread_list ));
gettimeofday( &process->end_time, NULL );
close_process_desktop( process );
handles = process->handles;
process->handles = NULL;
if (handles) release_object( handles );
/* close the console attached to this process, if any */
free_console( process );
while ((ptr = list_head( &process->dlls )))
{
struct process_dll *dll = LIST_ENTRY( ptr, struct process_dll, entry );
if (dll->file) release_object( dll->file );
if (dll->filename) free( dll->filename );
list_remove( &dll->entry );
free( dll );
}
destroy_process_classes( process );
remove_process_locks( process );
set_process_startup_state( process, STARTUP_ABORTED );
wake_up( &process->obj, 0 );
if (!--running_processes) close_master_socket();
}
/* add a thread to a process running threads list */
void add_process_thread( struct process *process, struct thread *thread )
{
list_add_head( &process->thread_list, &thread->proc_entry );
if (!process->running_threads++) running_processes++;
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 );
assert( !list_empty( &process->thread_list ));
list_remove( &thread->proc_entry );
if (!--process->running_threads)
{
/* we have removed the last running thread, exit the process */
process->exit_code = thread->exit_code;
generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
process_killed( process );
}
else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
release_object( thread );
}
/* suspend all the threads of a process */
void suspend_process( struct process *process )
{
if (!process->suspend++)
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
{
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
if (!thread->suspend) stop_thread( thread );
}
}
}
/* resume all the threads of a process */
void resume_process( struct process *process )
{
assert (process->suspend > 0);
if (!--process->suspend)
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
{
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
if (!thread->suspend) wake_thread( thread );
}
}
}
/* kill a process on the spot */
void kill_process( struct process *process, struct thread *skip, int exit_code )
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
{
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
if (exit_code) thread->exit_code = exit_code;
if (thread != skip) kill_thread( thread, 1 );
}
}
/* 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 */
{
struct process *process;
/* find the first process being debugged by 'debugger' and still running */
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 */
process->debugger = NULL;
kill_process( process, NULL, exit_code );
}
}
/* detach a debugger from all its debuggees */
void detach_debugged_processes( struct thread *debugger )
{
struct process *process;
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
{
if (process->debugger == debugger && process->running_threads)
{
debugger_detach( process, debugger );
}
}
}
void enum_processes( int (*cb)(struct process*, void*), void *user )
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &process_list )
{
struct process *process = LIST_ENTRY( ptr, struct process, entry );
if ((cb)(process, user)) break;
}
}
/* read data from a process memory space */
/* len is the total size (in ints) */
static int read_process_memory( struct process *process, const int *addr, size_t len, int *dest )
{
struct thread *thread = get_process_first_thread( process );
assert( !((unsigned int)addr % sizeof(int)) ); /* address must be aligned */
if (!thread) /* process is dead */
{
set_error( STATUS_ACCESS_DENIED );
return 0;
}
if (suspend_for_ptrace( thread ))
{
while (len > 0)
{
if (read_thread_int( thread, addr++, dest++ ) == -1) break;
len--;
}
resume_after_ptrace( thread );
}
return !len;
}
/* make sure we can write to the whole address range */
/* len is the total size (in ints) */
static int check_process_write_access( struct thread *thread, int *addr, size_t len )
{
int page = get_page_size() / sizeof(int);
for (;;)
{
if (write_thread_int( thread, addr, 0, 0 ) == -1) return 0;
if (len <= page) break;
addr += page;
len -= page;
}
return (write_thread_int( thread, addr + len - 1, 0, 0 ) != -1);
}
/* write data to a process memory space */
/* len is the total size (in ints), max is the size we can actually read from the input buffer */
/* we check the total size for write permissions */
static int write_process_memory( struct process *process, int *addr, size_t len,
unsigned int first_mask, unsigned int last_mask, const int *src )
{
struct thread *thread = get_process_first_thread( process );
int ret = 0;
assert( !((unsigned int)addr % sizeof(int) )); /* address must be aligned */
if (!thread) /* process is dead */
{
set_error( STATUS_ACCESS_DENIED );
return 0;
}
if (suspend_for_ptrace( thread ))
{
if (!check_process_write_access( thread, addr, len ))
{
set_error( STATUS_ACCESS_DENIED );
goto done;
}
/* first word is special */
if (len > 1)
{
if (write_thread_int( thread, addr++, *src++, first_mask ) == -1) goto done;
len--;
}
else last_mask &= first_mask;
while (len > 1)
{
if (write_thread_int( thread, addr++, *src++, ~0 ) == -1) goto done;
len--;
}
/* last word is special too */
if (write_thread_int( thread, addr, *src, last_mask ) == -1) goto done;
ret = 1;
done:
resume_after_ptrace( thread );
}
return ret;
}
/* set the debugged flag in the process PEB */
int set_process_debug_flag( struct process *process, int flag )
{
int mask = 0, data = 0;
/* BeingDebugged flag is the byte at offset 2 in the PEB */
memset( (char *)&mask + 2, 0xff, 1 );
memset( (char *)&data + 2, flag, 1 );
return write_process_memory( process, process->peb, 1, mask, mask, &data );
}
/* take a snapshot of currently running processes */
struct process_snapshot *process_snap( int *count )
{
struct process_snapshot *snapshot, *ptr;
struct process *process;
if (!running_processes) return NULL;
if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
return NULL;
ptr = snapshot;
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
{
if (!process->running_threads) continue;
ptr->process = process;
ptr->threads = process->running_threads;
ptr->count = process->obj.refcount;
ptr->priority = process->priority;
ptr->handles = get_handle_table_count(process);
grab_object( process );
ptr++;
}
*count = running_processes;
return snapshot;
}
/* take a snapshot of the modules of a process */
struct module_snapshot *module_snap( struct process *process, int *count )
{
struct module_snapshot *snapshot, *ptr;
struct process_dll *dll;
int total = 0;
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry ) total++;
if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
ptr = snapshot;
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
{
ptr->base = dll->base;
ptr->size = dll->size;
ptr->namelen = dll->namelen;
ptr->filename = memdup( dll->filename, dll->namelen );
ptr++;
}
*count = total;
return snapshot;
}
/* create a new process */
DECL_HANDLER(new_process)
{
struct startup_info *info;
/* build the startup info for a new process */
if (!(info = alloc_object( &startup_info_ops ))) return;
list_add_head( &startup_info_list, &info->entry );
info->inherit_all = req->inherit_all;
info->create_flags = req->create_flags;
info->unix_pid = req->unix_pid;
info->hstdin = req->hstdin;
info->hstdout = req->hstdout;
info->hstderr = req->hstderr;
info->exe_file = NULL;
info->owner = (struct thread *)grab_object( current );
info->process = NULL;
info->thread = NULL;
info->data_size = get_req_data_size();
info->data = NULL;
if (req->exe_file &&
!(info->exe_file = get_file_obj( current->process, req->exe_file, FILE_READ_DATA )))
goto done;
if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
reply->info = alloc_handle( current->process, info, SYNCHRONIZE, 0 );
done:
release_object( info );
}
/* Retrieve information about a newly started process */
DECL_HANDLER(get_new_process_info)
{
struct startup_info *info;
if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
0, &startup_info_ops )))
{
reply->pid = get_process_id( info->process );
reply->tid = get_thread_id( info->thread );
reply->phandle = alloc_handle( current->process, info->process,
req->process_access, req->process_attr );
reply->thandle = alloc_handle( current->process, info->thread,
req->thread_access, req->thread_attr );
reply->success = is_process_init_done( info->process );
release_object( info );
}
else
{
reply->pid = 0;
reply->tid = 0;
reply->phandle = 0;
reply->thandle = 0;
reply->success = 0;
}
}
/* Retrieve the new process startup info */
DECL_HANDLER(get_startup_info)
{
struct process *process = current->process;
struct startup_info *info = process->startup_info;
size_t size;
if (!info) return;
if (info->exe_file &&
!(reply->exe_file = alloc_handle( process, info->exe_file, GENERIC_READ, 0 ))) return;
if (!info->inherit_all && !(info->create_flags & CREATE_NEW_CONSOLE))
{
struct process *parent_process = info->owner->process;
reply->hstdin = duplicate_handle( parent_process, info->hstdin, process,
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
reply->hstdout = duplicate_handle( parent_process, info->hstdout, process,
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
reply->hstderr = duplicate_handle( parent_process, info->hstderr, process,
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
/* 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();
}
else
{
reply->hstdin = info->hstdin;
reply->hstdout = info->hstdout;
reply->hstderr = info->hstderr;
}
/* we return the data directly without making a copy so this can only be called once */
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;
}
/* signal the end of the process initialization */
DECL_HANDLER(init_process_done)
{
struct process_dll *dll;
struct process *process = current->process;
if (is_process_init_done(process))
{
fatal_protocol_error( current, "init_process_done: called twice\n" );
return;
}
if (!(dll = find_process_dll( process, req->module )))
{
set_error( STATUS_DLL_NOT_FOUND );
return;
}
/* main exe is the first in the dll list */
list_remove( &dll->entry );
list_add_head( &process->dlls, &dll->entry );
generate_startup_debug_events( process, req->entry );
set_process_startup_state( process, STARTUP_DONE );
if (req->gui) process->idle_event = create_event( NULL, NULL, 0, 1, 0 );
if (current->suspend + process->suspend > 0) stop_thread( current );
if (process->debugger) set_process_debug_flag( process, 1 );
}
/* open a handle to a process */
DECL_HANDLER(open_process)
{
struct process *process = get_process_from_id( req->pid );
reply->handle = 0;
if (process)
{
reply->handle = alloc_handle( current->process, process, req->access, req->attributes );
release_object( process );
}
}
/* terminate a process */
DECL_HANDLER(terminate_process)
{
struct process *process;
if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
{
reply->self = (current->process == process);
kill_process( process, current, req->exit_code );
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 )))
{
reply->pid = get_process_id( process );
reply->ppid = process->parent ? get_process_id( process->parent ) : 0;
reply->exit_code = process->exit_code;
reply->priority = process->priority;
reply->affinity = process->affinity;
reply->peb = process->peb;
release_object( process );
}
}
/* set information about a process */
DECL_HANDLER(set_process_info)
{
struct process *process;
if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
{
if (req->mask & SET_PROCESS_INFO_PRIORITY) process->priority = req->priority;
if (req->mask & SET_PROCESS_INFO_AFFINITY)
{
if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
else process->affinity = req->affinity;
}
release_object( process );
}
}
/* read data from a process address space */
DECL_HANDLER(read_process_memory)
{
struct process *process;
size_t len = get_reply_max_size();
if (!(process = get_process_from_handle( req->handle, PROCESS_VM_READ ))) return;
if (len)
{
unsigned int start_offset = (unsigned int)req->addr % sizeof(int);
unsigned int nb_ints = (len + start_offset + sizeof(int) - 1) / sizeof(int);
const int *start = (int *)((char *)req->addr - start_offset);
int *buffer = mem_alloc( nb_ints * sizeof(int) );
if (buffer)
{
if (read_process_memory( process, start, nb_ints, buffer ))
{
/* move start of requested data to start of buffer */
if (start_offset) memmove( buffer, (char *)buffer + start_offset, len );
set_reply_data_ptr( buffer, len );
}
else free( buffer );
}
}
release_object( process );
}
/* 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 )))
{
size_t len = get_req_data_size();
if ((len % sizeof(int)) || ((unsigned int)req->addr % sizeof(int)))
set_error( STATUS_INVALID_PARAMETER );
else
{
if (len) write_process_memory( process, req->addr, len / sizeof(int),
req->first_mask, req->last_mask, get_req_data() );
}
release_object( process );
}
}
/* notify the server that a dll has been loaded */
DECL_HANDLER(load_dll)
{
struct process_dll *dll;
struct file *file = NULL;
if (req->handle && !(file = get_file_obj( current->process, req->handle, FILE_READ_DATA )))
return;
if ((dll = process_load_dll( current->process, file, req->base,
get_req_data(), get_req_data_size() )))
{
dll->size = req->size;
dll->dbg_offset = req->dbg_offset;
dll->dbg_size = req->dbg_size;
dll->name = req->name;
/* only generate event if initialization is done */
if (is_process_init_done( current->process ))
generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
}
if (file) release_object( file );
}
/* notify the server that a dll is being unloaded */
DECL_HANDLER(unload_dll)
{
process_unload_dll( current->process, req->base );
}
/* 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 )))
{
struct process_dll *dll = find_process_dll( process, req->base_address );
if (dll)
{
reply->size = dll->size;
reply->entry_point = NULL; /* FIXME */
if (dll->filename)
{
size_t len = min( dll->namelen, get_reply_max_size() );
set_reply_data( dll->filename, len );
}
}
else
set_error( STATUS_DLL_NOT_FOUND );
release_object( process );
}
}
/* wait for a process to start waiting on input */
/* FIXME: only returns event for now, wait is done in the client */
DECL_HANDLER(wait_input_idle)
{
struct process *process;
reply->event = 0;
if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
{
if (process->idle_event && process != current->process)
reply->event = alloc_handle( current->process, process->idle_event,
EVENT_ALL_ACCESS, 0 );
release_object( process );
}
}
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