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wine/server/process.c
Alexandre Julliard 1bf96e09a9 Beginnings of support for window stations and desktops.
2005-06-08 18:44:50 +00:00

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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 "windef.h"
#include "winbase.h"
#include "winnt.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 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_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 */
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 */
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;
}
}
/* set the console and stdio handles for a newly created process */
static int set_process_console( struct process *process, struct thread *parent_thread,
struct startup_info *info, struct init_process_reply *reply )
{
if (info)
{
if (!(process->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 );
}
if (!info->inherit_all && !(process->create_flags & CREATE_NEW_CONSOLE))
{
reply->hstdin = duplicate_handle( parent_thread->process, info->hstdin, process,
0, TRUE, DUPLICATE_SAME_ACCESS );
reply->hstdout = duplicate_handle( parent_thread->process, info->hstdout, process,
0, TRUE, DUPLICATE_SAME_ACCESS );
reply->hstderr = duplicate_handle( parent_thread->process, info->hstderr, process,
0, TRUE, DUPLICATE_SAME_ACCESS );
}
else
{
reply->hstdin = info->hstdin;
reply->hstdout = info->hstdout;
reply->hstderr = info->hstderr;
}
}
else reply->hstdin = reply->hstdout = reply->hstderr = 0;
/* 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();
return 1;
}
/* 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 = NORMAL_PRIORITY_CLASS;
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->exe.file = NULL;
process->exe.dbg_offset = 0;
process->exe.dbg_size = 0;
process->exe.namelen = 0;
process->exe.filename = NULL;
process->group_id = 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 = 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 */
static struct startup_info *init_process( struct init_process_reply *reply )
{
struct process *process = current->process;
struct thread *parent_thread = NULL;
struct process *parent = NULL;
struct startup_info *info = find_startup_info( current->unix_pid );
if (info)
{
if (info->thread)
{
fatal_protocol_error( current, "init_process: called twice?\n" );
return NULL;
}
parent_thread = info->owner;
parent = parent_thread->process;
process->parent = (struct process *)grab_object( parent );
}
/* set the process flags */
process->create_flags = info ? info->create_flags : 0;
/* create the handle table */
if (info && info->inherit_all)
process->handles = copy_handle_table( process, parent );
else
process->handles = alloc_handle_table( process, 0 );
if (!process->handles) return NULL;
/* retrieve the main exe file */
reply->exe_file = 0;
if (info && info->exe_file)
{
process->exe.file = (struct file *)grab_object( info->exe_file );
if (!(reply->exe_file = alloc_handle( process, process->exe.file, GENERIC_READ, 0 )))
return NULL;
}
/* connect to the window station and desktop */
connect_process_winstation( process, NULL, 0 );
connect_thread_desktop( current, NULL, 0 );
/* set the process console */
if (!set_process_console( process, parent_thread, info, reply )) return NULL;
process->group_id = get_process_id( process );
if (parent)
{
/* 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;
}
/* thread will be actually suspended in init_done */
if (process->create_flags & CREATE_SUSPENDED) current->suspend++;
if (info)
{
reply->info_size = info->data_size;
info->process = (struct process *)grab_object( process );
info->thread = (struct thread *)grab_object( current );
}
reply->create_flags = process->create_flags;
reply->server_start = server_start_ticks;
return info ? (struct startup_info *)grab_object( info ) : NULL;
}
/* 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->exe.file) release_object( process->exe.file );
if (process->exe.filename) free( process->exe.filename );
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 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 && is_process_init_done(info->process);
}
/* 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;
if (process->exe.base == base) return &process->exe;
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_head( &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 != &process->exe)
{
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 list *ptr;
assert( list_empty( &process->thread_list ));
gettimeofday( &process->end_time, NULL );
if (process->handles) release_object( process->handles );
process->handles = NULL;
/* 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 );
set_process_startup_state( process, STARTUP_ABORTED );
if (process->exe.file) release_object( process->exe.file );
process->exe.file = NULL;
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 );
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 = 1;
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry ) total++;
if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
/* first entry is main exe */
snapshot->base = process->exe.base;
snapshot->size = process->exe.size;
snapshot->namelen = process->exe.namelen;
snapshot->filename = memdup( process->exe.filename, process->exe.namelen );
ptr = snapshot + 1;
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, GENERIC_READ )))
goto done;
if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
reply->info = alloc_handle( current->process, info, SYNCHRONIZE, FALSE );
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,
PROCESS_ALL_ACCESS, req->pinherit );
reply->thandle = alloc_handle( current->process, info->thread,
THREAD_ALL_ACCESS, req->tinherit );
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 startup_info *info;
if ((info = current->process->startup_info))
{
size_t size = info->data_size;
if (size > get_reply_max_size()) size = get_reply_max_size();
/* we return the data directly without making a copy so this can only be called once */
set_reply_data_ptr( info->data, size );
info->data = NULL;
info->data_size = 0;
}
}
/* initialize a new process */
DECL_HANDLER(init_process)
{
if (current->unix_pid == -1)
{
fatal_protocol_error( current, "init_process: init_thread not called yet\n" );
return;
}
if (current->process->startup_info)
{
fatal_protocol_error( current, "init_process: called twice\n" );
return;
}
if (!req->peb || (unsigned int)req->peb % sizeof(int))
{
fatal_protocol_error( current, "init_process: bad peb address\n" );
return;
}
if (!req->ldt_copy || (unsigned int)req->ldt_copy % sizeof(int))
{
fatal_protocol_error( current, "init_process: bad ldt_copy address\n" );
return;
}
reply->info_size = 0;
current->process->peb = req->peb;
current->process->ldt_copy = req->ldt_copy;
current->process->startup_info = init_process( reply );
}
/* signal the end of the process initialization */
DECL_HANDLER(init_process_done)
{
struct file *file = NULL;
struct process *process = current->process;
if (is_process_init_done(process))
{
fatal_protocol_error( current, "init_process_done: called twice\n" );
return;
}
if (!req->module)
{
fatal_protocol_error( current, "init_process_done: module base address cannot be 0\n" );
return;
}
process->exe.base = req->module;
process->exe.size = req->module_size;
process->exe.name = req->name;
if (req->exe_file) file = get_file_obj( process, req->exe_file, GENERIC_READ );
if (process->exe.file) release_object( process->exe.file );
process->exe.file = file;
if ((process->exe.namelen = get_req_data_size()))
process->exe.filename = memdup( get_req_data(), process->exe.namelen );
generate_startup_debug_events( process, req->entry );
set_process_startup_state( process, STARTUP_DONE );
if (req->gui) process->idle_event = create_event( 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->inherit );
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->process_affinity = process->affinity;
reply->system_affinity = 1;
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 len = 0;
}
}
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, GENERIC_READ )))
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 && process->queue != current->queue)
reply->event = alloc_handle( current->process, process->idle_event,
EVENT_ALL_ACCESS, 0 );
release_object( process );
}
}
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