dlls/vmm.vxd/vmm.c

   1 /*
   2  * VMM VxD implementation
   3  *
   4  * Copyright 1998 Marcus Meissner
   5  * Copyright 1998 Ulrich Weigand
   6  * Copyright 1998 Patrik Stridvall
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <stdarg.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winternl.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(vxd);
  34
  35 /*
  36  * VMM VxDCall service names are (mostly) taken from Stan Mitchell's
  37  * "Inside the Windows 95 File System"
  38  */
  39
  40 #define N_VMM_SERVICE 41
  41
  42 static const char * const VMM_Service_Name[N_VMM_SERVICE] =
  43 {
  44     "PageReserve",            /* 0x0000 */
  45     "PageCommit",             /* 0x0001 */
  46     "PageDecommit",           /* 0x0002 */
  47     "PagerRegister",          /* 0x0003 */
  48     "PagerQuery",             /* 0x0004 */
  49     "HeapAllocate",           /* 0x0005 */
  50     "ContextCreate",          /* 0x0006 */
  51     "ContextDestroy",         /* 0x0007 */
  52     "PageAttach",             /* 0x0008 */
  53     "PageFlush",              /* 0x0009 */
  54     "PageFree",               /* 0x000A */
  55     "ContextSwitch",          /* 0x000B */
  56     "HeapReAllocate",         /* 0x000C */
  57     "PageModifyPermissions",  /* 0x000D */
  58     "PageQuery",              /* 0x000E */
  59     "GetCurrentContext",      /* 0x000F */
  60     "HeapFree",               /* 0x0010 */
  61     "RegOpenKey",             /* 0x0011 */
  62     "RegCreateKey",           /* 0x0012 */
  63     "RegCloseKey",            /* 0x0013 */
  64     "RegDeleteKey",           /* 0x0014 */
  65     "RegSetValue",            /* 0x0015 */
  66     "RegDeleteValue",         /* 0x0016 */
  67     "RegQueryValue",          /* 0x0017 */
  68     "RegEnumKey",             /* 0x0018 */
  69     "RegEnumValue",           /* 0x0019 */
  70     "RegQueryValueEx",        /* 0x001A */
  71     "RegSetValueEx",          /* 0x001B */
  72     "RegFlushKey",            /* 0x001C */
  73     "RegQueryInfoKey",        /* 0x001D */
  74     "GetDemandPageInfo",      /* 0x001E */
  75     "BlockOnID",              /* 0x001F */
  76     "SignalID",               /* 0x0020 */
  77     "RegLoadKey",             /* 0x0021 */
  78     "RegUnLoadKey",           /* 0x0022 */
  79     "RegSaveKey",             /* 0x0023 */
  80     "RegRemapPreDefKey",      /* 0x0024 */
  81     "PageChangePager",        /* 0x0025 */
  82     "RegQueryMultipleValues", /* 0x0026 */
  83     "RegReplaceKey",          /* 0x0027 */
  84     "<KERNEL32.101>"          /* 0x0028 -- What does this do??? */
  85 };
  86
  87 /* PageReserve arena values */
  88 #define PR_PRIVATE    0x80000400 /* anywhere in private arena */
  89 #define PR_SHARED     0x80060000 /* anywhere in shared arena */
  90 #define PR_SYSTEM     0x80080000 /* anywhere in system arena */
  91
  92 /* PageReserve flags */
  93 #define PR_FIXED      0x00000008 /* don't move during PageReAllocate */
  94 #define PR_4MEG       0x00000001 /* allocate on 4mb boundary */
  95 #define PR_STATIC     0x00000010 /* see PageReserve documentation */
  96
  97 /* PageCommit default pager handle values */
  98 #define PD_ZEROINIT   0x00000001 /* swappable zero-initialized pages */
  99 #define PD_NOINIT     0x00000002 /* swappable uninitialized pages */
 100 #define PD_FIXEDZERO  0x00000003 /* fixed zero-initialized pages */
 101 #define PD_FIXED      0x00000004 /* fixed uninitialized pages */
 102
 103 /* PageCommit flags */
 104 #define PC_FIXED      0x00000008 /* pages are permanently locked */
 105 #define PC_LOCKED     0x00000080 /* pages are made present and locked */
 106 #define PC_LOCKEDIFDP 0x00000100 /* pages are locked if swap via DOS */
 107 #define PC_WRITABLE   0x00020000 /* make the pages writable */
 108 #define PC_USER       0x00040000 /* make the pages ring 3 accessible */
 109 #define PC_INCR       0x40000000 /* increment "pagerdata" each page */
 110 #define PC_PRESENT    0x80000000 /* make pages initially present */
 111 #define PC_STATIC     0x20000000 /* allow commit in PR_STATIC object */
 112 #define PC_DIRTY      0x08000000 /* make pages initially dirty */
 113 #define PC_CACHEDIS   0x00100000 /* Allocate uncached pages - new for WDM */
 114 #define PC_CACHEWT    0x00080000 /* Allocate write through cache pages - new for WDM */
 115 #define PC_PAGEFLUSH  0x00008000 /* Touch device mapped pages on alloc - new for WDM */
 116
 117 /* PageCommitContig additional flags */
 118 #define PCC_ZEROINIT  0x00000001 /* zero-initialize new pages */
 119 #define PCC_NOLIN     0x10000000 /* don't map to any linear address */
 120
 121
 122 /* Pop a DWORD from the 32-bit stack */
 123 static inline DWORD stack32_pop( CONTEXT *context )
 124 {
 125     DWORD ret = *(DWORD *)context->Esp;
 126     context->Esp += sizeof(DWORD);
 127     return ret;
 128 }
 129
 130
 131 /***********************************************************************
 132  *           VxDCall   (VMM.VXD.@)
 133  */
 134 DWORD WINAPI VMM_VxDCall( DWORD service, CONTEXT *context )
 135 {
 136     static int warned;
 137
 138     switch ( LOWORD(service) )
 139     {
 140     case 0x0000: /* PageReserve */
 141     {
 142         LPVOID address;
 143         LPVOID ret;
 144         DWORD psize = getpagesize();
 145         ULONG page   = stack32_pop( context );
 146         ULONG npages = stack32_pop( context );
 147         ULONG flags  = stack32_pop( context );
 148
 149         TRACE("PageReserve: page: %08x, npages: %08x, flags: %08x partial stub!\n",
 150               page, npages, flags );
 151
 152         if ( page == PR_SYSTEM ) {
 153           ERR("Can't reserve ring 1 memory\n");
 154           return -1;
 155         }
 156         /* FIXME: This has to be handled separately for the separate
 157            address-spaces we now have */
 158         if ( page == PR_PRIVATE || page == PR_SHARED ) page = 0;
 159         /* FIXME: Handle flags in some way */
 160         address = (LPVOID )(page * psize);
 161         ret = VirtualAlloc ( address, ( npages * psize ), MEM_RESERVE, 0 );
 162         TRACE("PageReserve: returning: %p\n", ret );
 163         if ( ret == NULL )
 164           return -1;
 165         else
 166           return (DWORD )ret;
 167     }
 168
 169     case 0x0001: /* PageCommit */
 170     {
 171         LPVOID address;
 172         LPVOID ret;
 173         DWORD virt_perm;
 174         DWORD psize = getpagesize();
 175         ULONG page   = stack32_pop( context );
 176         ULONG npages = stack32_pop( context );
 177         ULONG hpd  = stack32_pop( context );
 178         ULONG pagerdata   = stack32_pop( context );
 179         ULONG flags  = stack32_pop( context );
 180
 181         TRACE("PageCommit: page: %08x, npages: %08x, hpd: %08x pagerdata: "
 182               "%08x, flags: %08x partial stub\n",
 183               page, npages, hpd, pagerdata, flags );
 184
 185         if ( flags & PC_USER )
 186           if ( flags & PC_WRITABLE )
 187             virt_perm = PAGE_EXECUTE_READWRITE;
 188           else
 189             virt_perm = PAGE_EXECUTE_READ;
 190         else
 191           virt_perm = PAGE_NOACCESS;
 192
 193         address = (LPVOID )(page * psize);
 194         ret = VirtualAlloc ( address, ( npages * psize ), MEM_COMMIT, virt_perm );
 195         TRACE("PageCommit: Returning: %p\n", ret );
 196         return (DWORD )ret;
 197
 198     }
 199
 200     case 0x0002: /* PageDecommit */
 201     {
 202         LPVOID address;
 203         BOOL ret;
 204         DWORD psize = getpagesize();
 205         ULONG page = stack32_pop( context );
 206         ULONG npages = stack32_pop( context );
 207         ULONG flags = stack32_pop( context );
 208
 209         TRACE("PageDecommit: page: %08x, npages: %08x, flags: %08x partial stub\n",
 210               page, npages, flags );
 211         address = (LPVOID )( page * psize );
 212         ret = VirtualFree ( address, ( npages * psize ), MEM_DECOMMIT );
 213         TRACE("PageDecommit: Returning: %s\n", ret ? "TRUE" : "FALSE" );
 214         return ret;
 215     }
 216
 217     case 0x000d: /* PageModifyPermissions */
 218     {
 219         DWORD pg_old_perm;
 220         DWORD pg_new_perm;
 221         DWORD virt_old_perm;
 222         DWORD virt_new_perm;
 223         MEMORY_BASIC_INFORMATION mbi;
 224         LPVOID address;
 225         DWORD psize = getpagesize();
 226         ULONG page = stack32_pop ( context );
 227         ULONG npages = stack32_pop ( context );
 228         ULONG permand = stack32_pop ( context );
 229         ULONG permor = stack32_pop ( context );
 230
 231         TRACE("PageModifyPermissions %08x %08x %08x %08x partial stub\n",
 232               page, npages, permand, permor );
 233         address = (LPVOID )( page * psize );
 234
 235         VirtualQuery ( address, &mbi, sizeof ( MEMORY_BASIC_INFORMATION ));
 236         virt_old_perm = mbi.Protect;
 237
 238         switch ( virt_old_perm & mbi.Protect ) {
 239         case PAGE_READONLY:
 240         case PAGE_EXECUTE:
 241         case PAGE_EXECUTE_READ:
 242           pg_old_perm = PC_USER;
 243           break;
 244         case PAGE_READWRITE:
 245         case PAGE_WRITECOPY:
 246         case PAGE_EXECUTE_READWRITE:
 247         case PAGE_EXECUTE_WRITECOPY:
 248           pg_old_perm = PC_USER | PC_WRITABLE;
 249           break;
 250         case PAGE_NOACCESS:
 251         default:
 252           pg_old_perm = 0;
 253           break;
 254         }
 255         pg_new_perm = pg_old_perm;
 256         pg_new_perm &= permand & ~PC_STATIC;
 257         pg_new_perm |= permor  & ~PC_STATIC;
 258
 259         virt_new_perm = ( virt_old_perm )  & ~0xff;
 260         if ( pg_new_perm & PC_USER )
 261         {
 262           if ( pg_new_perm & PC_WRITABLE )
 263             virt_new_perm |= PAGE_EXECUTE_READWRITE;
 264           else
 265             virt_new_perm |= PAGE_EXECUTE_READ;
 266         }
 267
 268         if ( ! VirtualProtect ( address, ( npages * psize ), virt_new_perm, &virt_old_perm ) ) {
 269           ERR("Can't change page permissions for %p\n", address );
 270           return 0xffffffff;
 271         }
 272         TRACE("Returning: %08x\n", pg_old_perm );
 273         return pg_old_perm;
 274     }
 275
 276     case 0x000a: /* PageFree */
 277     {
 278         BOOL ret;
 279         LPVOID hmem = (LPVOID) stack32_pop( context );
 280         DWORD flags = stack32_pop( context );
 281
 282         TRACE("PageFree: hmem: %p, flags: %08x partial stub\n",
 283               hmem, flags );
 284
 285         ret = VirtualFree ( hmem, 0, MEM_RELEASE );
 286         TRACE("Returning: %d\n", ret );
 287         return ret;
 288     }
 289
 290     case 0x0011:  /* RegOpenKey */
 291         stack32_pop( context ); /* kkey */
 292         stack32_pop( context ); /* lpszSubKey */
 293         stack32_pop( context ); /* retkey */
 294         /* return RegOpenKeyExA( hkey, lpszSubKey, 0, KEY_ALL_ACCESS, retkey ); */
 295         if (!warned)
 296         {
 297             ERR( "Using the native Win95 advapi32.dll is no longer supported.\n" );
 298             ERR( "Please configure advapi32 to builtin.\n" );
 299             warned++;
 300         }
 301         return ERROR_CALL_NOT_IMPLEMENTED;
 302
 303     case 0x0012:  /* RegCreateKey */
 304         stack32_pop( context ); /* hkey */
 305         stack32_pop( context ); /* lpszSubKey */
 306         stack32_pop( context ); /* retkey */
 307         /* return RegCreateKeyA( hkey, lpszSubKey, retkey ); */
 308         if (!warned)
 309         {
 310             ERR( "Using the native Win95 advapi32.dll is no longer supported.\n" );
 311             ERR( "Please configure advapi32 to builtin.\n" );
 312             warned++;
 313         }
 314         return ERROR_CALL_NOT_IMPLEMENTED;
 315
 316     case 0x0013:  /* RegCloseKey */
 317         stack32_pop( context ); /* hkey */
 318         /* return RegCloseKey( hkey ); */
 319         return ERROR_CALL_NOT_IMPLEMENTED;
 320
 321     case 0x0014:  /* RegDeleteKey */
 322         stack32_pop( context ); /* hkey */
 323         stack32_pop( context ); /* lpszSubKey */
 324         /* return RegDeleteKeyA( hkey, lpszSubKey ); */
 325         return ERROR_CALL_NOT_IMPLEMENTED;
 326
 327     case 0x0015:  /* RegSetValue */
 328         stack32_pop( context ); /* hkey */
 329         stack32_pop( context ); /* lpszSubKey */
 330         stack32_pop( context ); /* dwType */
 331         stack32_pop( context ); /* lpszData */
 332         stack32_pop( context ); /* cbData */
 333         /* return RegSetValueA( hkey, lpszSubKey, dwType, lpszData, cbData ); */
 334         return ERROR_CALL_NOT_IMPLEMENTED;
 335
 336     case 0x0016:  /* RegDeleteValue */
 337         stack32_pop( context ); /* hkey */
 338         stack32_pop( context ); /* lpszValue */
 339         /* return RegDeleteValueA( hkey, lpszValue ); */
 340         return ERROR_CALL_NOT_IMPLEMENTED;
 341
 342     case 0x0017:  /* RegQueryValue */
 343         stack32_pop( context ); /* hkey */
 344         stack32_pop( context ); /* lpszSubKey */
 345         stack32_pop( context ); /* lpszData */
 346         stack32_pop( context ); /* lpcbData */
 347         /* return RegQueryValueA( hkey, lpszSubKey, lpszData, lpcbData ); */
 348         return ERROR_CALL_NOT_IMPLEMENTED;
 349
 350     case 0x0018:  /* RegEnumKey */
 351         stack32_pop( context ); /* hkey */
 352         stack32_pop( context ); /* iSubkey */
 353         stack32_pop( context ); /* lpszName */
 354         stack32_pop( context ); /* lpcchName */
 355         /* return RegEnumKeyA( hkey, iSubkey, lpszName, lpcchName ); */
 356         return ERROR_CALL_NOT_IMPLEMENTED;
 357
 358     case 0x0019:  /* RegEnumValue */
 359         stack32_pop( context ); /* hkey */
 360         stack32_pop( context ); /* iValue */
 361         stack32_pop( context ); /* lpszValue */
 362         stack32_pop( context ); /* lpcchValue */
 363         stack32_pop( context ); /* lpReserved */
 364         stack32_pop( context ); /* lpdwType */
 365         stack32_pop( context ); /* lpbData */
 366         stack32_pop( context ); /* lpcbData */
 367         /* return RegEnumValueA( hkey, iValue, lpszValue, lpcchValue, lpReserved, lpdwType, lpbData, lpcbData ); */
 368         return ERROR_CALL_NOT_IMPLEMENTED;
 369
 370     case 0x001A:  /* RegQueryValueEx */
 371         stack32_pop( context ); /* hkey */
 372         stack32_pop( context ); /* lpszValue */
 373         stack32_pop( context ); /* lpReserved */
 374         stack32_pop( context ); /* lpdwType */
 375         stack32_pop( context ); /* lpbData */
 376         stack32_pop( context ); /* lpcbData */
 377         /* return RegQueryValueExA( hkey, lpszValue, lpReserved, lpdwType, lpbData, lpcbData ); */
 378         return ERROR_CALL_NOT_IMPLEMENTED;
 379
 380     case 0x001B:  /* RegSetValueEx */
 381         stack32_pop( context ); /* hkey */
 382         stack32_pop( context ); /* lpszValue */
 383         stack32_pop( context ); /* dwReserved */
 384         stack32_pop( context ); /* dwType */
 385         stack32_pop( context ); /* lpbData */
 386         stack32_pop( context ); /* cbData */
 387         /* return RegSetValueExA( hkey, lpszValue, dwReserved, dwType, lpbData, cbData ); */
 388         return ERROR_CALL_NOT_IMPLEMENTED;
 389
 390     case 0x001C:  /* RegFlushKey */
 391         stack32_pop( context ); /* hkey */
 392         /* return RegFlushKey( hkey ); */
 393         return ERROR_CALL_NOT_IMPLEMENTED;
 394
 395     case 0x001D:  /* RegQueryInfoKey */
 396         /* NOTE: This VxDCall takes only a subset of the parameters that the
 397                  corresponding Win32 API call does. The implementation in Win95
 398                  ADVAPI32 sets all output parameters not mentioned here to zero. */
 399         stack32_pop( context ); /* hkey */
 400         stack32_pop( context ); /* lpcSubKeys */
 401         stack32_pop( context ); /* lpcchMaxSubKey */
 402         stack32_pop( context ); /* lpcValues */
 403         stack32_pop( context ); /* lpcchMaxValueName */
 404         stack32_pop( context ); /* lpcchMaxValueData */
 405         /* return RegQueryInfoKeyA( hkey, lpcSubKeys, lpcchMaxSubKey, lpcValues, lpcchMaxValueName, lpcchMaxValueData ); */
 406         return ERROR_CALL_NOT_IMPLEMENTED;
 407
 408     case 0x001e: /* GetDemandPageInfo */
 409     {
 410          DWORD dinfo = stack32_pop( context );
 411          DWORD flags = stack32_pop( context );
 412
 413          /* GetDemandPageInfo is supposed to fill out the struct at
 414           * "dinfo" with various low-level memory management information.
 415           * Apps are certainly not supposed to call this, although it's
 416           * demoed and documented by Pietrek on pages 441-443 of "Windows
 417           * 95 System Programming Secrets" if any program needs a real
 418           * implementation of this.
 419           */
 420
 421          FIXME("GetDemandPageInfo(%08x %08x): stub!\n", dinfo, flags);
 422
 423          return 0;
 424     }
 425
 426     case 0x0021:  /* RegLoadKey */
 427     {
 428         HKEY    hkey       = (HKEY)  stack32_pop( context );
 429         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 430         LPCSTR  lpszFile   = (LPCSTR)stack32_pop( context );
 431         FIXME("RegLoadKey(%p,%s,%s): stub\n",hkey, debugstr_a(lpszSubKey), debugstr_a(lpszFile));
 432         return ERROR_CALL_NOT_IMPLEMENTED;
 433     }
 434
 435     case 0x0022:  /* RegUnLoadKey */
 436     {
 437         HKEY    hkey       = (HKEY)  stack32_pop( context );
 438         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 439         FIXME("RegUnLoadKey(%p,%s): stub\n",hkey, debugstr_a(lpszSubKey));
 440         return ERROR_CALL_NOT_IMPLEMENTED;
 441     }
 442
 443     case 0x0023:  /* RegSaveKey */
 444     {
 445         HKEY    hkey       = (HKEY)  stack32_pop( context );
 446         LPCSTR  lpszFile   = (LPCSTR)stack32_pop( context );
 447         LPSECURITY_ATTRIBUTES sa = (LPSECURITY_ATTRIBUTES)stack32_pop( context );
 448         FIXME("RegSaveKey(%p,%s,%p): stub\n",hkey, debugstr_a(lpszFile),sa);
 449         return ERROR_CALL_NOT_IMPLEMENTED;
 450     }
 451
 452 #if 0 /* Functions are not yet implemented in misc/registry.c */
 453     case 0x0024:  /* RegRemapPreDefKey */
 454     case 0x0026:  /* RegQueryMultipleValues */
 455 #endif
 456
 457     case 0x0027:  /* RegReplaceKey */
 458     {
 459         HKEY    hkey       = (HKEY)  stack32_pop( context );
 460         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 461         LPCSTR  lpszNewFile= (LPCSTR)stack32_pop( context );
 462         LPCSTR  lpszOldFile= (LPCSTR)stack32_pop( context );
 463         FIXME("RegReplaceKey(%p,%s,%s,%s): stub\n", hkey, debugstr_a(lpszSubKey),
 464               debugstr_a(lpszNewFile),debugstr_a(lpszOldFile));
 465         return ERROR_CALL_NOT_IMPLEMENTED;
 466     }
 467
 468     default:
 469         if (LOWORD(service) < N_VMM_SERVICE)
 470             FIXME( "Unimplemented service %s (%08x)\n",
 471                    VMM_Service_Name[LOWORD(service)], service);
 472         else
 473             FIXME( "Unknown service %08x\n", service);
 474         return 0xffffffff;  /* FIXME */
 475     }
 476 }