scheduler/process.c

/*
 * Win32 processes
 *
 * Copyright 1996 Alexandre Julliard
 */

#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "process.h"
#include "module.h"
#include "file.h"
#include "heap.h"
#include "task.h"
#include "ldt.h"
#include "thread.h"
#include "winerror.h"
#include "pe_image.h"

/* Process self-handle */
#define PROCESS_SELF ((HANDLE32)0x7fffffff)

static BOOL32 PROCESS_Signaled( K32OBJ *obj, DWORD thread_id );
static BOOL32 PROCESS_Satisfied( K32OBJ *obj, DWORD thread_id );
static void PROCESS_AddWait( K32OBJ *obj, DWORD thread_id );
static void PROCESS_RemoveWait( K32OBJ *obj, DWORD thread_id );
static void PROCESS_Destroy( K32OBJ *obj );

const K32OBJ_OPS PROCESS_Ops =
{
    PROCESS_Signaled,    /* signaled */
    PROCESS_Satisfied,   /* satisfied */
    PROCESS_AddWait,     /* add_wait */
    PROCESS_RemoveWait,  /* remove_wait */
    PROCESS_Destroy      /* destroy */
};


/***********************************************************************
 *           PROCESS_Current
 */
PDB32 *PROCESS_Current(void)
{
    return THREAD_Current()->process;
}


/***********************************************************************
 *           PROCESS_GetPtr
 *
 * Get a process from a handle, incrementing the PDB refcount.
 */
PDB32 *PROCESS_GetPtr( HANDLE32 handle, DWORD access )
{
    PDB32 *pdb;

    if (handle == PROCESS_SELF)
    {
        pdb = PROCESS_Current();
        K32OBJ_IncCount( &pdb->header );
        return pdb;
    }
    return (PDB32 *)HANDLE_GetObjPtr( handle, K32OBJ_PROCESS, access );
}


/***********************************************************************
 *           PROCESS_IdToPDB
 *
 * Convert a process id to a PDB, making sure it is valid.
 */
PDB32 *PROCESS_IdToPDB( DWORD id )
{
    PDB32 *pdb;

    if (!id) return PROCESS_Current();
    pdb = PROCESS_ID_TO_PDB( id );
    if (!K32OBJ_IsValid( &pdb->header, K32OBJ_PROCESS ))
    {
        SetLastError( ERROR_INVALID_PARAMETER );
        return NULL;
    }
    return pdb;
}


static int pstr_cmp( const void *ps1, const void *ps2 )
{
    return lstrcmpi32A( *(LPSTR *)ps1, *(LPSTR *)ps2 );
}

/***********************************************************************
 *           PROCESS_FillEnvDB
 */
static BOOL32 PROCESS_FillEnvDB( PDB32 *pdb, TDB *pTask, LPCSTR cmd_line )
{
    LPSTR p, env;
    INT32 count = 0;
    LPSTR *pp, *array = NULL;

    /* Copy the Win16 environment, sorting it in the process */

    env = p = GlobalLock16( pTask->pdb.environment );
    for (p = env; *p; p += strlen(p) + 1) count++;
    pdb->env_db->env_size = (p - env) + 1;
    pdb->env_db->environ = HeapAlloc( pdb->heap, 0, pdb->env_db->env_size );
    if (!pdb->env_db->environ) goto error;
    if (!(array = HeapAlloc( pdb->heap, 0, count * sizeof(array[0]) )))
        goto error;
    for (p = env, pp = array; *p; p += strlen(p) + 1) *pp++ = p;
    qsort( array, count, sizeof(LPSTR), pstr_cmp );
    p = pdb->env_db->environ;
    for (pp = array; count; count--, pp++)
    {
        strcpy( p, *pp );
        p += strlen(p) + 1;
    }
    *p = '\0';
    HeapFree( pdb->heap, 0, array );
    array = NULL;

    /* Copy the command line */
    /* Fixme: Here we rely on the hack that loader/module.c put's the unprocessed
       commandline after the processed one in Pascal notation.
       We may access Null data if we get called another way.
       If we have a real CreateProcess sometimes, the problem to get an unrestricted
       commandline will go away and we won't need that hack any longer
       */
    if (!(pdb->env_db->cmd_line =
	  HEAP_strdupA( pdb->heap, 0, cmd_line + (unsigned char)cmd_line[0] + 2)))
        goto error;
    return TRUE;

error:
    if (pdb->env_db->cmd_line) HeapFree( pdb->heap, 0, pdb->env_db->cmd_line );
    if (array) HeapFree( pdb->heap, 0, array );
    if (pdb->env_db->environ) HeapFree( pdb->heap, 0, pdb->env_db->environ );
    return FALSE;
}


/***********************************************************************
 *           PROCESS_FreePDB
 *
 * Free a PDB and all associated storage.
 */
static void PROCESS_FreePDB( PDB32 *pdb )
{
    pdb->header.type = K32OBJ_UNKNOWN;
    if (pdb->heap && (pdb->heap != pdb->system_heap)) HeapDestroy( pdb->heap );
    if (pdb->handle_table) HeapFree( pdb->system_heap, 0, pdb->handle_table );
    if (pdb->load_done_evt) K32OBJ_DecCount( pdb->load_done_evt );
    if (pdb->event) K32OBJ_DecCount( pdb->event );
    DeleteCriticalSection( &pdb->crit_section );
    HeapFree( SystemHeap, 0, pdb );
}


/***********************************************************************
 *           PROCESS_CreatePDB
 *
 * Allocate and fill a PDB structure.
 */
static PDB32 *PROCESS_CreatePDB( PDB32 *parent )
{
    PDB32 *pdb = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(PDB32) );

    if (!pdb) return NULL;
    pdb->header.type     = K32OBJ_PROCESS;
    pdb->header.refcount = 1;
    pdb->exit_code       = 0x103; /* STILL_ACTIVE */
    pdb->threads         = 1;
    pdb->running_threads = 1;
    pdb->ring0_threads   = 1;
    pdb->system_heap     = SystemHeap;
    pdb->parent          = parent;
    pdb->group           = pdb;
    pdb->priority        = 8;  /* Normal */
    pdb->heap            = pdb->system_heap;  /* will be changed later on */

    InitializeCriticalSection( &pdb->crit_section );

    /* Allocate the events */

    if (!(pdb->event = EVENT_Create( TRUE, FALSE ))) goto error;
    if (!(pdb->load_done_evt = EVENT_Create( TRUE, FALSE ))) goto error;

    /* Allocate the handle table */

    if (!(pdb->handle_table = HANDLE_AllocTable( pdb ))) goto error;
    return pdb;

error:
    PROCESS_FreePDB( pdb );
    return NULL;
}


/***********************************************************************
 *           PROCESS_Init
 */
BOOL32 PROCESS_Init(void)
{
    extern BOOL32 VIRTUAL_Init(void);
    PDB32 *pdb;
    THDB *thdb;

    /* Initialize virtual memory management */
    if (!VIRTUAL_Init()) return FALSE;

    /* Create the system and SEGPTR heaps */
    if (!(SystemHeap = HeapCreate( HEAP_GROWABLE, 0x10000, 0 ))) return FALSE;
    if (!(SegptrHeap = HeapCreate( HEAP_WINE_SEGPTR, 0, 0 ))) return FALSE;

    /* Create the initial process and thread structures */
    if (!(pdb = PROCESS_CreatePDB( NULL ))) return FALSE;
    if (!(thdb = THREAD_Create( pdb, 0, NULL, NULL ))) return FALSE;
    SET_CUR_THREAD( thdb );

    return TRUE;
}


/***********************************************************************
 *           PROCESS_Create
 *
 * Create a new process database and associated info.
 */
PDB32 *PROCESS_Create( TDB *pTask, LPCSTR cmd_line )
{
    DWORD size, commit;
    NE_MODULE *pModule;
    PDB32 *pdb = PROCESS_CreatePDB( PROCESS_Current() );

    if (!pdb) return NULL;
    if (!(pModule = MODULE_GetPtr( pTask->hModule ))) return 0;

    /* Create the heap */

    if (pModule->module32)
    {
	size  = PE_HEADER(pModule->module32)->OptionalHeader.SizeOfHeapReserve;
	commit = PE_HEADER(pModule->module32)->OptionalHeader.SizeOfHeapCommit;
    }
    else
    {
	size = 0x10000;
	commit = 0;
    }
    if (!(pdb->heap = HeapCreate( HEAP_GROWABLE, size, commit ))) goto error;
    pdb->heap_list = pdb->heap;

    if (!(pdb->env_db = HeapAlloc(pdb->heap, HEAP_ZERO_MEMORY, sizeof(ENVDB))))
        goto error;
    if (!PROCESS_FillEnvDB( pdb, pTask, cmd_line )) goto error;
    return pdb;

error:
    PROCESS_FreePDB( pdb );
    return NULL;
}


/***********************************************************************
 *           PROCESS_Signaled
 */
static BOOL32 PROCESS_Signaled( K32OBJ *obj, DWORD thread_id )
{
    PDB32 *pdb = (PDB32 *)obj;
    assert( obj->type == K32OBJ_PROCESS );
    return K32OBJ_OPS( pdb->event )->signaled( pdb->event, thread_id );
}


/***********************************************************************
 *           PROCESS_Satisfied
 *
 * Wait on this object has been satisfied.
 */
static BOOL32 PROCESS_Satisfied( K32OBJ *obj, DWORD thread_id )
{
    PDB32 *pdb = (PDB32 *)obj;
    assert( obj->type == K32OBJ_PROCESS );
    return K32OBJ_OPS( pdb->event )->satisfied( pdb->event, thread_id );
}


/***********************************************************************
 *           PROCESS_AddWait
 *
 * Add thread to object wait queue.
 */
static void PROCESS_AddWait( K32OBJ *obj, DWORD thread_id )
{
    PDB32 *pdb = (PDB32 *)obj;
    assert( obj->type == K32OBJ_PROCESS );
    return K32OBJ_OPS( pdb->event )->add_wait( pdb->event, thread_id );
}


/***********************************************************************
 *           PROCESS_RemoveWait
 *
 * Remove thread from object wait queue.
 */
static void PROCESS_RemoveWait( K32OBJ *obj, DWORD thread_id )
{
    PDB32 *pdb = (PDB32 *)obj;
    assert( obj->type == K32OBJ_PROCESS );
    return K32OBJ_OPS( pdb->event )->remove_wait( pdb->event, thread_id );
}


/***********************************************************************
 *           PROCESS_Destroy
 */
static void PROCESS_Destroy( K32OBJ *ptr )
{
    PDB32 *pdb = (PDB32 *)ptr;
    HANDLE32 handle;
    assert( ptr->type == K32OBJ_PROCESS );

    /* Close all handles */
    for (handle = 0; handle < pdb->handle_table->count; handle++)
        if (pdb->handle_table->entries[handle].ptr) CloseHandle( handle );

    /* Free everything */

    ptr->type = K32OBJ_UNKNOWN;
    PROCESS_FreePDB( pdb );
}


/***********************************************************************
 *           ExitProcess   (KERNEL32.100)
 */
void WINAPI ExitProcess( DWORD status )
{
    PDB32 *pdb = PROCESS_Current();

    SYSTEM_LOCK();
    /* FIXME: should kill all running threads of this process */
    pdb->exit_code = status;
    EVENT_Set( pdb->event );
    SYSTEM_UNLOCK();

    __RESTORE_ES;  /* Necessary for Pietrek's showseh example program */
    TASK_KillCurrentTask( status );
}


/***********************************************************************
 *           GetCurrentProcess   (KERNEL32.198)
 */
HANDLE32 WINAPI GetCurrentProcess(void)
{
    return 0x7fffffff;
}


/*********************************************************************
 *           OpenProcess   (KERNEL32.543)
 */
HANDLE32 WINAPI OpenProcess( DWORD access, BOOL32 inherit, DWORD id )
{
    PDB32 *pdb = PROCESS_ID_TO_PDB(id);
    if (!K32OBJ_IsValid( &pdb->header, K32OBJ_PROCESS ))
    {
        SetLastError( ERROR_INVALID_HANDLE );
        return 0;
    }
    return HANDLE_Alloc( &pdb->header, access, inherit );
}			      


/***********************************************************************
 *           GetCurrentProcessId   (KERNEL32.199)
 */
DWORD WINAPI GetCurrentProcessId(void)
{
    PDB32 *pdb = PROCESS_Current();
    return PDB_TO_PROCESS_ID( pdb );
}


/***********************************************************************
 *      GetEnvironmentStrings32A   (KERNEL32.210) (KERNEL32.211)
 */
LPSTR WINAPI GetEnvironmentStrings32A(void)
{
    PDB32 *pdb = PROCESS_Current();
    return pdb->env_db->environ;
}


/***********************************************************************
 *      GetEnvironmentStrings32W   (KERNEL32.212)
 */
LPWSTR WINAPI GetEnvironmentStrings32W(void)
{
    INT32 size;
    LPWSTR ret, pW;
    LPSTR pA;
    PDB32 *pdb = PROCESS_Current();

    size = HeapSize( GetProcessHeap(), 0, pdb->env_db->environ );
    if (!(ret = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) )))
        return NULL;
    pA = pdb->env_db->environ;
    pW = ret;
    while (*pA)
    {
        lstrcpyAtoW( pW, pA );
        size = strlen(pA);
        pA += size + 1;
        pW += size + 1;
    }
    *pW = 0;
    return ret;
}


/***********************************************************************
 *           FreeEnvironmentStrings32A   (KERNEL32.141)
 */
BOOL32 WINAPI FreeEnvironmentStrings32A( LPSTR ptr )
{
    PDB32 *pdb = PROCESS_Current();
    if (ptr != pdb->env_db->environ)
    {
        SetLastError( ERROR_INVALID_PARAMETER );
        return FALSE;
    }
    return TRUE;
}


/***********************************************************************
 *           FreeEnvironmentStrings32W   (KERNEL32.142)
 */
BOOL32 WINAPI FreeEnvironmentStrings32W( LPWSTR ptr )
{
    return HeapFree( GetProcessHeap(), 0, ptr );
}


/***********************************************************************
 *          GetEnvironmentVariable32A   (KERNEL32.213)
 */
DWORD WINAPI GetEnvironmentVariable32A( LPCSTR name, LPSTR value, DWORD size )
{
    LPSTR p;
    INT32 len, res;

    p = PROCESS_Current()->env_db->environ;
    if (!name || !*name)
    {
        SetLastError( ERROR_INVALID_PARAMETER );
        return 0;
    }
    len = strlen(name);
    while (*p)
    {
        res = lstrncmpi32A( name, p, len );
        if (res < 0) goto not_found;
        if (!res && (p[len] == '=')) break;
        p += strlen(p) + 1;
    }
    if (!*p) goto not_found;
    if (value) lstrcpyn32A( value, p + len + 1, size );
    len = strlen(p);
    /* According to the Win32 docs, if there is not enough room, return
     * the size required to hold the string plus the terminating null
     */
    if (size <= len) len++;
    return len;
	
not_found:
    return 0;  /* FIXME: SetLastError */
}


/***********************************************************************
 *           GetEnvironmentVariable32W   (KERNEL32.214)
 */
DWORD WINAPI GetEnvironmentVariable32W( LPCWSTR nameW, LPWSTR valW, DWORD size)
{
    LPSTR name = HEAP_strdupWtoA( GetProcessHeap(), 0, nameW );
    LPSTR val  = HeapAlloc( GetProcessHeap(), 0, size );
    DWORD res  = GetEnvironmentVariable32A( name, val, size );
    HeapFree( GetProcessHeap(), 0, name );
    if (valW) lstrcpynAtoW( valW, val, size );
    HeapFree( GetProcessHeap(), 0, val );
    return res;
}


/***********************************************************************
 *           SetEnvironmentVariable32A   (KERNEL32.484)
 */
BOOL32 WINAPI SetEnvironmentVariable32A( LPCSTR name, LPCSTR value )
{
    INT32 size, len, res;
    LPSTR p, env, new_env;
    PDB32 *pdb = PROCESS_Current();

    env = p = pdb->env_db->environ;

    /* Find a place to insert the string */

    res = -1;
    len = strlen(name);
    while (*p)
    {
        res = lstrncmpi32A( name, p, len );
        if (res < 0) break;
        if (!res && (p[len] == '=')) break;
        res = 1;
        p += strlen(p) + 1;
    }
    if (!value && res)  /* Value to remove doesn't exist already */
        return FALSE;

    /* Realloc the buffer */

    len = value ? strlen(name) + strlen(value) + 2 : 0;
    if (!res) len -= strlen(p) + 1;  /* The name already exists */
    size = pdb->env_db->env_size + len;
    if (len < 0)
    {
        LPSTR next = p + strlen(p) + 1;
        memmove( next + len, next, pdb->env_db->env_size - (next - env) );
    }
    if (!(new_env = HeapReAlloc( GetProcessHeap(), 0, env, size )))
        return FALSE;
    p = new_env + (p - env);
    if (len > 0) memmove( p + len, p, pdb->env_db->env_size - (p-new_env) );

    /* Set the new string */

    if (value)
    {
        strcpy( p, name );
        strcat( p, "=" );
        strcat( p, value );
    }
    pdb->env_db->env_size = size;
    pdb->env_db->environ  = new_env;
    return TRUE;
}


/***********************************************************************
 *           SetEnvironmentVariable32W   (KERNEL32.485)
 */
BOOL32 WINAPI SetEnvironmentVariable32W( LPCWSTR name, LPCWSTR value )
{
    LPSTR nameA  = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
    LPSTR valueA = HEAP_strdupWtoA( GetProcessHeap(), 0, value );
    BOOL32 ret = SetEnvironmentVariable32A( nameA, valueA );
    HeapFree( GetProcessHeap(), 0, nameA );
    HeapFree( GetProcessHeap(), 0, valueA );
    return ret;
}


/***********************************************************************
 *           ExpandEnvironmentVariablesA   (KERNEL32.103)
 */
DWORD WINAPI ExpandEnvironmentStrings32A( LPCSTR src, LPSTR dst, DWORD len)
{
	LPCSTR s;
        LPSTR d;
	HANDLE32	heap = GetProcessHeap();
	LPSTR		xdst = HeapAlloc(heap,0,10);
	DWORD		cursize = 10;
	DWORD		ret;

	fprintf(stderr,"ExpandEnvironmentStrings32A(%s)\n",src);
	s=src;
	d=xdst;
	memset(dst,'\0',len);
#define CHECK_FREE(n)  {				\
	DWORD	_needed = (n);				\
							\
	while (cursize-(d-xdst)<_needed) {		\
		DWORD	ind = d-xdst;			\
							\
		cursize+=100;				\
		xdst=(LPSTR)HeapReAlloc(heap,0,xdst,cursize);\
		d = xdst+ind;				\
	}						\
}

	while (*s) {
		if (*s=='%') {
			LPCSTR end;

			end = s;do { end++; } while (*end && *end!='%');
			if (*end=='%') {
				LPSTR	x = HeapAlloc(heap,0,end-s+1);
				char	buf[2];

				lstrcpyn32A(x,s+1,end-s);
				x[end-s]=0;

				/* put expanded variable directly into 
				 * destination string, so we don't have
				 * to use temporary buffers.
				 */
				ret = GetEnvironmentVariable32A(x,buf,2);
				CHECK_FREE(ret+2);
				ret = GetEnvironmentVariable32A(x,d,cursize-(d-xdst));
				if (ret) {
					d+=strlen(d);
					s=end;
				} else {
					CHECK_FREE(strlen(x)+2);
					*d++='%';
					lstrcpy32A(d,x);
					d+=strlen(x);
					*d++='%';
				}
				HeapFree(heap,0,x);
			} else
				*d++=*s;

			s++;
		} else {
			CHECK_FREE(1);
			*d++=*s++;
		}
	}
	*d	= '\0';
	ret	= lstrlen32A(xdst)+1;
	if (d-xdst<len)
		lstrcpy32A(dst,xdst);
	HeapFree(heap,0,xdst);
	return ret;
}

/***********************************************************************
 *           ExpandEnvironmentVariablesA   (KERNEL32.104)
 */
DWORD WINAPI ExpandEnvironmentStrings32W( LPCWSTR src, LPWSTR dst, DWORD len)
{
	HANDLE32	heap = GetProcessHeap();
	LPSTR		srcA = HEAP_strdupWtoA(heap,0,src);
	LPSTR		dstA = HeapAlloc(heap,0,len);
	DWORD		ret = ExpandEnvironmentStrings32A(srcA,dstA,len);

	lstrcpyAtoW(dst,dstA);
	HeapFree(heap,0,dstA);
	HeapFree(heap,0,srcA);
	return ret;
}

/***********************************************************************
 *           GetProcessHeap    (KERNEL32.259)
 */
HANDLE32 WINAPI GetProcessHeap(void)
{
    PDB32 *pdb = PROCESS_Current();
    return pdb->heap ? pdb->heap : SystemHeap;
}


/***********************************************************************
 *           GetThreadLocale    (KERNEL32.295)
 */
LCID WINAPI GetThreadLocale(void)
{
    return PROCESS_Current()->locale;
}


/***********************************************************************
 *           SetPriorityClass   (KERNEL32.503)
 */
BOOL32 WINAPI SetPriorityClass( HANDLE32 hprocess, DWORD priorityclass )
{
    PDB32 *pdb = PROCESS_GetPtr( hprocess, PROCESS_SET_INFORMATION );
    if (!pdb) return FALSE;
    switch (priorityclass)
    {
    case NORMAL_PRIORITY_CLASS:
    	pdb->priority = 0x00000008;
	break;
    case IDLE_PRIORITY_CLASS:
    	pdb->priority = 0x00000004;
	break;
    case HIGH_PRIORITY_CLASS:
    	pdb->priority = 0x0000000d;
	break;
    case REALTIME_PRIORITY_CLASS:
    	pdb->priority = 0x00000018;
    	break;
    default:
    	fprintf(stderr,"SetPriorityClass: unknown priority class %ld\n",priorityclass);
	break;
    }
    K32OBJ_DecCount( &pdb->header );
    return TRUE;
}


/***********************************************************************
 *           GetPriorityClass   (KERNEL32.250)
 */
DWORD WINAPI GetPriorityClass(HANDLE32 hprocess)
{
    PDB32 *pdb = PROCESS_GetPtr( hprocess, PROCESS_QUERY_INFORMATION );
    DWORD ret = 0;
    if (pdb)
    {
    	switch (pdb->priority)
        {
	case 0x00000008:
	    ret = NORMAL_PRIORITY_CLASS;
	    break;
	case 0x00000004:
	    ret = IDLE_PRIORITY_CLASS;
	    break;
	case 0x0000000d:
	    ret = HIGH_PRIORITY_CLASS;
	    break;
	case 0x00000018:
	    ret = REALTIME_PRIORITY_CLASS;
	    break;
	default:
	    fprintf(stderr,"GetPriorityClass: unknown priority %ld\n",pdb->priority);
	}
	K32OBJ_DecCount( &pdb->header );
    }
    return ret;
}


/***********************************************************************
 *           GetStdHandle    (KERNEL32.276)
 *
 * FIXME: These should be allocated when a console is created, or inherited
 *        from the parent.
 */
HANDLE32 WINAPI GetStdHandle( DWORD std_handle )
{
    HFILE32 hFile;
    int fd;
    PDB32 *pdb = PROCESS_Current();

    switch(std_handle)
    {
    case STD_INPUT_HANDLE:
        if (pdb->env_db->hStdin) return pdb->env_db->hStdin;
        fd = 0;
        break;
    case STD_OUTPUT_HANDLE:
        if (pdb->env_db->hStdout) return pdb->env_db->hStdout;
        fd = 1;
        break;
    case STD_ERROR_HANDLE:
        if (pdb->env_db->hStderr) return pdb->env_db->hStderr;
        fd = 2;
        break;
    default:
        SetLastError( ERROR_INVALID_PARAMETER );
        return INVALID_HANDLE_VALUE32;
    }
    hFile = FILE_DupUnixHandle( fd );
    if (hFile != HFILE_ERROR32)
    {
        FILE_SetFileType( hFile, FILE_TYPE_CHAR );
        switch(std_handle)
        {
        case STD_INPUT_HANDLE:  pdb->env_db->hStdin  = hFile; break;
        case STD_OUTPUT_HANDLE: pdb->env_db->hStdout = hFile; break;
        case STD_ERROR_HANDLE:  pdb->env_db->hStderr = hFile; break;
        }
    }
    return hFile;
}


/***********************************************************************
 *           SetStdHandle    (KERNEL32.506)
 */
BOOL32 WINAPI SetStdHandle( DWORD std_handle, HANDLE32 handle )
{
    PDB32 *pdb = PROCESS_Current();
    /* FIXME: should we close the previous handle? */
    switch(std_handle)
    {
    case STD_INPUT_HANDLE:
        pdb->env_db->hStdin = handle;
        return TRUE;
    case STD_OUTPUT_HANDLE:
        pdb->env_db->hStdout = handle;
        return TRUE;
    case STD_ERROR_HANDLE:
        pdb->env_db->hStderr = handle;
        return TRUE;
    }
    SetLastError( ERROR_INVALID_PARAMETER );
    return FALSE;
}

/***********************************************************************
 *           GetProcessVersion    (KERNEL32)
 */
DWORD WINAPI GetProcessVersion( DWORD processid )
{
    TDB *pTask;
    PDB32 *pdb = PROCESS_IdToPDB( processid );

    if (!pdb) return 0;
    if (!(pTask = (TDB *)GlobalLock16( pdb->task ))) return 0;
    return (pTask->version&0xff) | (((pTask->version >>8) & 0xff)<<16);
}

/***********************************************************************
 *           GetProcessFlags    (KERNEL32)
 */
DWORD WINAPI GetProcessFlags( DWORD processid )
{
    PDB32 *pdb = PROCESS_IdToPDB( processid );
    if (!pdb) return 0;
    return pdb->flags;
}

/***********************************************************************
 *           SetProcessWorkingSetSize    (KERNEL32)
 */
BOOL32 WINAPI SetProcessWorkingSetSize(HANDLE32 hProcess,DWORD minset,
                                       DWORD maxset)
{
	fprintf(stderr,"SetProcessWorkingSetSize(0x%08x,%ld,%ld), STUB!\n",
		hProcess,minset,maxset
	);
	return TRUE;
}

/***********************************************************************
 *           GetProcessWorkingSetSize    (KERNEL32)
 */
BOOL32 WINAPI GetProcessWorkingSetSize(HANDLE32 hProcess,LPDWORD minset,
                                       LPDWORD maxset)
{
	fprintf(stderr,"SetProcessWorkingSetSize(0x%08x,%p,%p), STUB!\n",
		hProcess,minset,maxset
	);
	/* 32 MB working set size */
	if (minset) *minset = 32*1024*1024;
	if (maxset) *maxset = 32*1024*1024;
	return TRUE;
}

/***********************************************************************
 *           SetProcessShutdownParameters    (KERNEL32)
 */
BOOL32 WINAPI SetProcessShutdownParameters(DWORD level,DWORD flags)
{
	fprintf(stderr,"SetProcessShutdownParameters(%ld,0x%08lx), STUB!\n",
		level,flags
	);
	return TRUE;
}

/***********************************************************************
 *           ReadProcessMemory    		(KERNEL32)
 * FIXME: check this, if we ever run win32 binaries in different addressspaces
 *	  ... and add a sizecheck
 */
BOOL32 WINAPI ReadProcessMemory( HANDLE32 hProcess, LPCVOID lpBaseAddress,
                                 LPVOID lpBuffer, DWORD nSize,
                                 LPDWORD lpNumberOfBytesRead )
{
	memcpy(lpBuffer,lpBaseAddress,nSize);
	if (lpNumberOfBytesRead) *lpNumberOfBytesRead = nSize;
	return TRUE;
}

/***********************************************************************
 *           ConvertToGlobalHandle    		(KERNEL32)
 * FIXME: this is not correctly implemented...
 */
HANDLE32 WINAPI ConvertToGlobalHandle(HANDLE32 h)
{
	fprintf(stderr,"ConvertToGlobalHandle(%d),stub!\n",h);
	return h;
}

/***********************************************************************
 *           RegisterServiceProcess             (KERNEL32)
 *
 * A service process calls this function to ensure that it continues to run
 * even after a user logged off.
 */
DWORD RegisterServiceProcess(DWORD dwProcessId, DWORD dwType)
{
	/* I don't think that Wine needs to do anything in that function */
	return 1; /* success */
}