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 <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winternl.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(vxd);
  31
  32 /*
  33  * VMM VxDCall service names are (mostly) taken from Stan Mitchell's
  34  * "Inside the Windows 95 File System"
  35  */
  36
  37 #define N_VMM_SERVICE 41
  38
  39 static const char * const VMM_Service_Name[N_VMM_SERVICE] =
  40 {
  41     "PageReserve",            /* 0x0000 */
  42     "PageCommit",             /* 0x0001 */
  43     "PageDecommit",           /* 0x0002 */
  44     "PagerRegister",          /* 0x0003 */
  45     "PagerQuery",             /* 0x0004 */
  46     "HeapAllocate",           /* 0x0005 */
  47     "ContextCreate",          /* 0x0006 */
  48     "ContextDestroy",         /* 0x0007 */
  49     "PageAttach",             /* 0x0008 */
  50     "PageFlush",              /* 0x0009 */
  51     "PageFree",               /* 0x000A */
  52     "ContextSwitch",          /* 0x000B */
  53     "HeapReAllocate",         /* 0x000C */
  54     "PageModifyPermissions",  /* 0x000D */
  55     "PageQuery",              /* 0x000E */
  56     "GetCurrentContext",      /* 0x000F */
  57     "HeapFree",               /* 0x0010 */
  58     "RegOpenKey",             /* 0x0011 */
  59     "RegCreateKey",           /* 0x0012 */
  60     "RegCloseKey",            /* 0x0013 */
  61     "RegDeleteKey",           /* 0x0014 */
  62     "RegSetValue",            /* 0x0015 */
  63     "RegDeleteValue",         /* 0x0016 */
  64     "RegQueryValue",          /* 0x0017 */
  65     "RegEnumKey",             /* 0x0018 */
  66     "RegEnumValue",           /* 0x0019 */
  67     "RegQueryValueEx",        /* 0x001A */
  68     "RegSetValueEx",          /* 0x001B */
  69     "RegFlushKey",            /* 0x001C */
  70     "RegQueryInfoKey",        /* 0x001D */
  71     "GetDemandPageInfo",      /* 0x001E */
  72     "BlockOnID",              /* 0x001F */
  73     "SignalID",               /* 0x0020 */
  74     "RegLoadKey",             /* 0x0021 */
  75     "RegUnLoadKey",           /* 0x0022 */
  76     "RegSaveKey",             /* 0x0023 */
  77     "RegRemapPreDefKey",      /* 0x0024 */
  78     "PageChangePager",        /* 0x0025 */
  79     "RegQueryMultipleValues", /* 0x0026 */
  80     "RegReplaceKey",          /* 0x0027 */
  81     "<KERNEL32.101>"          /* 0x0028 -- What does this do??? */
  82 };
  83
  84 /* PageReserve arena values */
  85 #define PR_PRIVATE    0x80000400 /* anywhere in private arena */
  86 #define PR_SHARED     0x80060000 /* anywhere in shared arena */
  87 #define PR_SYSTEM     0x80080000 /* anywhere in system arena */
  88
  89 /* PageReserve flags */
  90 #define PR_FIXED      0x00000008 /* don't move during PageReAllocate */
  91 #define PR_4MEG       0x00000001 /* allocate on 4mb boundary */
  92 #define PR_STATIC     0x00000010 /* see PageReserve documentation */
  93
  94 /* PageCommit default pager handle values */
  95 #define PD_ZEROINIT   0x00000001 /* swappable zero-initialized pages */
  96 #define PD_NOINIT     0x00000002 /* swappable uninitialized pages */
  97 #define PD_FIXEDZERO  0x00000003 /* fixed zero-initialized pages */
  98 #define PD_FIXED      0x00000004 /* fixed uninitialized pages */
  99
 100 /* PageCommit flags */
 101 #define PC_FIXED      0x00000008 /* pages are permanently locked */
 102 #define PC_LOCKED     0x00000080 /* pages are made present and locked */
 103 #define PC_LOCKEDIFDP 0x00000100 /* pages are locked if swap via DOS */
 104 #define PC_WRITABLE   0x00020000 /* make the pages writable */
 105 #define PC_USER       0x00040000 /* make the pages ring 3 accessible */
 106 #define PC_INCR       0x40000000 /* increment "pagerdata" each page */
 107 #define PC_PRESENT    0x80000000 /* make pages initially present */
 108 #define PC_STATIC     0x20000000 /* allow commit in PR_STATIC object */
 109 #define PC_DIRTY      0x08000000 /* make pages initially dirty */
 110 #define PC_CACHEDIS   0x00100000 /* Allocate uncached pages - new for WDM */
 111 #define PC_CACHEWT    0x00080000 /* Allocate write through cache pages - new for WDM */
 112 #define PC_PAGEFLUSH  0x00008000 /* Touch device mapped pages on alloc - new for WDM */
 113
 114 /* PageCommitContig additional flags */
 115 #define PCC_ZEROINIT  0x00000001 /* zero-initialize new pages */
 116 #define PCC_NOLIN     0x10000000 /* don't map to any linear address */
 117
 118
 119 static const DWORD page_size = 0x1000;  /* we only care about x86 */
 120
 121 /* Pop a DWORD from the 32-bit stack */
 122 static inline DWORD stack32_pop( CONTEXT *context )
 123 {
 124     DWORD ret = *(DWORD *)context->Esp;
 125     context->Esp += sizeof(DWORD);
 126     return ret;
 127 }
 128
 129
 130 /***********************************************************************
 131  *           VxDCall   (VMM.VXD.@)
 132  */
 133 DWORD WINAPI VMM_VxDCall( DWORD service, CONTEXT *context )
 134 {
 135     static int warned;
 136
 137     switch ( LOWORD(service) )
 138     {
 139     case 0x0000: /* PageReserve */
 140     {
 141         LPVOID address;
 142         LPVOID ret;
 143         ULONG page   = stack32_pop( context );
 144         ULONG npages = stack32_pop( context );
 145         ULONG flags  = stack32_pop( context );
 146
 147         TRACE("PageReserve: page: %08x, npages: %08x, flags: %08x partial stub!\n",
 148               page, npages, flags );
 149
 150         if ( page == PR_SYSTEM ) {
 151           ERR("Can't reserve ring 1 memory\n");
 152           return -1;
 153         }
 154         /* FIXME: This has to be handled separately for the separate
 155            address-spaces we now have */
 156         if ( page == PR_PRIVATE || page == PR_SHARED ) page = 0;
 157         /* FIXME: Handle flags in some way */
 158         address = (LPVOID )(page * page_size);
 159         ret = VirtualAlloc ( address, npages * page_size, MEM_RESERVE, PAGE_EXECUTE_READWRITE );
 160         TRACE("PageReserve: returning: %p\n", ret );
 161         if ( ret == NULL )
 162           return -1;
 163         else
 164           return (DWORD )ret;
 165     }
 166
 167     case 0x0001: /* PageCommit */
 168     {
 169         LPVOID address;
 170         LPVOID ret;
 171         DWORD virt_perm;
 172         ULONG page   = stack32_pop( context );
 173         ULONG npages = stack32_pop( context );
 174         ULONG hpd  = stack32_pop( context );
 175         ULONG pagerdata   = stack32_pop( context );
 176         ULONG flags  = stack32_pop( context );
 177
 178         TRACE("PageCommit: page: %08x, npages: %08x, hpd: %08x pagerdata: "
 179               "%08x, flags: %08x partial stub\n",
 180               page, npages, hpd, pagerdata, flags );
 181
 182         if ( flags & PC_USER )
 183           if ( flags & PC_WRITABLE )
 184             virt_perm = PAGE_EXECUTE_READWRITE;
 185           else
 186             virt_perm = PAGE_EXECUTE_READ;
 187         else
 188           virt_perm = PAGE_NOACCESS;
 189
 190         address = (LPVOID )(page * page_size);
 191         ret = VirtualAlloc ( address, npages * page_size, MEM_COMMIT, virt_perm );
 192         TRACE("PageCommit: Returning: %p\n", ret );
 193         return (DWORD )ret;
 194
 195     }
 196
 197     case 0x0002: /* PageDecommit */
 198     {
 199         LPVOID address;
 200         BOOL ret;
 201         ULONG page = stack32_pop( context );
 202         ULONG npages = stack32_pop( context );
 203         ULONG flags = stack32_pop( context );
 204
 205         TRACE("PageDecommit: page: %08x, npages: %08x, flags: %08x partial stub\n",
 206               page, npages, flags );
 207         address = (LPVOID )( page * page_size );
 208         ret = VirtualFree ( address, npages * page_size, MEM_DECOMMIT );
 209         TRACE("PageDecommit: Returning: %s\n", ret ? "TRUE" : "FALSE" );
 210         return ret;
 211     }
 212
 213     case 0x000d: /* PageModifyPermissions */
 214     {
 215         DWORD pg_old_perm;
 216         DWORD pg_new_perm;
 217         DWORD virt_old_perm;
 218         DWORD virt_new_perm;
 219         MEMORY_BASIC_INFORMATION mbi;
 220         LPVOID address;
 221         ULONG page = stack32_pop ( context );
 222         ULONG npages = stack32_pop ( context );
 223         ULONG permand = stack32_pop ( context );
 224         ULONG permor = stack32_pop ( context );
 225
 226         TRACE("PageModifyPermissions %08x %08x %08x %08x partial stub\n",
 227               page, npages, permand, permor );
 228         address = (LPVOID )( page * page_size );
 229
 230         VirtualQuery ( address, &mbi, sizeof ( MEMORY_BASIC_INFORMATION ));
 231         virt_old_perm = mbi.Protect;
 232
 233         switch ( virt_old_perm & mbi.Protect ) {
 234         case PAGE_READONLY:
 235         case PAGE_EXECUTE:
 236         case PAGE_EXECUTE_READ:
 237           pg_old_perm = PC_USER;
 238           break;
 239         case PAGE_READWRITE:
 240         case PAGE_WRITECOPY:
 241         case PAGE_EXECUTE_READWRITE:
 242         case PAGE_EXECUTE_WRITECOPY:
 243           pg_old_perm = PC_USER | PC_WRITABLE;
 244           break;
 245         case PAGE_NOACCESS:
 246         default:
 247           pg_old_perm = 0;
 248           break;
 249         }
 250         pg_new_perm = pg_old_perm;
 251         pg_new_perm &= permand & ~PC_STATIC;
 252         pg_new_perm |= permor  & ~PC_STATIC;
 253
 254         virt_new_perm = ( virt_old_perm )  & ~0xff;
 255         if ( pg_new_perm & PC_USER )
 256         {
 257           if ( pg_new_perm & PC_WRITABLE )
 258             virt_new_perm |= PAGE_EXECUTE_READWRITE;
 259           else
 260             virt_new_perm |= PAGE_EXECUTE_READ;
 261         }
 262
 263         if ( ! VirtualProtect ( address, npages * page_size, virt_new_perm, &virt_old_perm ) ) {
 264           ERR("Can't change page permissions for %p\n", address );
 265           return 0xffffffff;
 266         }
 267         TRACE("Returning: %08x\n", pg_old_perm );
 268         return pg_old_perm;
 269     }
 270
 271     case 0x000a: /* PageFree */
 272     {
 273         BOOL ret;
 274         LPVOID hmem = (LPVOID) stack32_pop( context );
 275         DWORD flags = stack32_pop( context );
 276
 277         TRACE("PageFree: hmem: %p, flags: %08x partial stub\n",
 278               hmem, flags );
 279
 280         ret = VirtualFree ( hmem, 0, MEM_RELEASE );
 281         TRACE("Returning: %d\n", ret );
 282         return ret;
 283     }
 284
 285     case 0x0011:  /* RegOpenKey */
 286         stack32_pop( context ); /* kkey */
 287         stack32_pop( context ); /* lpszSubKey */
 288         stack32_pop( context ); /* retkey */
 289         /* return RegOpenKeyExA( hkey, lpszSubKey, 0, KEY_ALL_ACCESS, retkey ); */
 290         if (!warned)
 291         {
 292             ERR( "Using the native Win95 advapi32.dll is no longer supported.\n" );
 293             ERR( "Please configure advapi32 to builtin.\n" );
 294             warned++;
 295         }
 296         return ERROR_CALL_NOT_IMPLEMENTED;
 297
 298     case 0x0012:  /* RegCreateKey */
 299         stack32_pop( context ); /* hkey */
 300         stack32_pop( context ); /* lpszSubKey */
 301         stack32_pop( context ); /* retkey */
 302         /* return RegCreateKeyA( hkey, lpszSubKey, retkey ); */
 303         if (!warned)
 304         {
 305             ERR( "Using the native Win95 advapi32.dll is no longer supported.\n" );
 306             ERR( "Please configure advapi32 to builtin.\n" );
 307             warned++;
 308         }
 309         return ERROR_CALL_NOT_IMPLEMENTED;
 310
 311     case 0x0013:  /* RegCloseKey */
 312         stack32_pop( context ); /* hkey */
 313         /* return RegCloseKey( hkey ); */
 314         return ERROR_CALL_NOT_IMPLEMENTED;
 315
 316     case 0x0014:  /* RegDeleteKey */
 317         stack32_pop( context ); /* hkey */
 318         stack32_pop( context ); /* lpszSubKey */
 319         /* return RegDeleteKeyA( hkey, lpszSubKey ); */
 320         return ERROR_CALL_NOT_IMPLEMENTED;
 321
 322     case 0x0015:  /* RegSetValue */
 323         stack32_pop( context ); /* hkey */
 324         stack32_pop( context ); /* lpszSubKey */
 325         stack32_pop( context ); /* dwType */
 326         stack32_pop( context ); /* lpszData */
 327         stack32_pop( context ); /* cbData */
 328         /* return RegSetValueA( hkey, lpszSubKey, dwType, lpszData, cbData ); */
 329         return ERROR_CALL_NOT_IMPLEMENTED;
 330
 331     case 0x0016:  /* RegDeleteValue */
 332         stack32_pop( context ); /* hkey */
 333         stack32_pop( context ); /* lpszValue */
 334         /* return RegDeleteValueA( hkey, lpszValue ); */
 335         return ERROR_CALL_NOT_IMPLEMENTED;
 336
 337     case 0x0017:  /* RegQueryValue */
 338         stack32_pop( context ); /* hkey */
 339         stack32_pop( context ); /* lpszSubKey */
 340         stack32_pop( context ); /* lpszData */
 341         stack32_pop( context ); /* lpcbData */
 342         /* return RegQueryValueA( hkey, lpszSubKey, lpszData, lpcbData ); */
 343         return ERROR_CALL_NOT_IMPLEMENTED;
 344
 345     case 0x0018:  /* RegEnumKey */
 346         stack32_pop( context ); /* hkey */
 347         stack32_pop( context ); /* iSubkey */
 348         stack32_pop( context ); /* lpszName */
 349         stack32_pop( context ); /* lpcchName */
 350         /* return RegEnumKeyA( hkey, iSubkey, lpszName, lpcchName ); */
 351         return ERROR_CALL_NOT_IMPLEMENTED;
 352
 353     case 0x0019:  /* RegEnumValue */
 354         stack32_pop( context ); /* hkey */
 355         stack32_pop( context ); /* iValue */
 356         stack32_pop( context ); /* lpszValue */
 357         stack32_pop( context ); /* lpcchValue */
 358         stack32_pop( context ); /* lpReserved */
 359         stack32_pop( context ); /* lpdwType */
 360         stack32_pop( context ); /* lpbData */
 361         stack32_pop( context ); /* lpcbData */
 362         /* return RegEnumValueA( hkey, iValue, lpszValue, lpcchValue, lpReserved, lpdwType, lpbData, lpcbData ); */
 363         return ERROR_CALL_NOT_IMPLEMENTED;
 364
 365     case 0x001A:  /* RegQueryValueEx */
 366         stack32_pop( context ); /* hkey */
 367         stack32_pop( context ); /* lpszValue */
 368         stack32_pop( context ); /* lpReserved */
 369         stack32_pop( context ); /* lpdwType */
 370         stack32_pop( context ); /* lpbData */
 371         stack32_pop( context ); /* lpcbData */
 372         /* return RegQueryValueExA( hkey, lpszValue, lpReserved, lpdwType, lpbData, lpcbData ); */
 373         return ERROR_CALL_NOT_IMPLEMENTED;
 374
 375     case 0x001B:  /* RegSetValueEx */
 376         stack32_pop( context ); /* hkey */
 377         stack32_pop( context ); /* lpszValue */
 378         stack32_pop( context ); /* dwReserved */
 379         stack32_pop( context ); /* dwType */
 380         stack32_pop( context ); /* lpbData */
 381         stack32_pop( context ); /* cbData */
 382         /* return RegSetValueExA( hkey, lpszValue, dwReserved, dwType, lpbData, cbData ); */
 383         return ERROR_CALL_NOT_IMPLEMENTED;
 384
 385     case 0x001C:  /* RegFlushKey */
 386         stack32_pop( context ); /* hkey */
 387         /* return RegFlushKey( hkey ); */
 388         return ERROR_CALL_NOT_IMPLEMENTED;
 389
 390     case 0x001D:  /* RegQueryInfoKey */
 391         /* NOTE: This VxDCall takes only a subset of the parameters that the
 392                  corresponding Win32 API call does. The implementation in Win95
 393                  ADVAPI32 sets all output parameters not mentioned here to zero. */
 394         stack32_pop( context ); /* hkey */
 395         stack32_pop( context ); /* lpcSubKeys */
 396         stack32_pop( context ); /* lpcchMaxSubKey */
 397         stack32_pop( context ); /* lpcValues */
 398         stack32_pop( context ); /* lpcchMaxValueName */
 399         stack32_pop( context ); /* lpcchMaxValueData */
 400         /* return RegQueryInfoKeyA( hkey, lpcSubKeys, lpcchMaxSubKey, lpcValues, lpcchMaxValueName, lpcchMaxValueData ); */
 401         return ERROR_CALL_NOT_IMPLEMENTED;
 402
 403     case 0x001e: /* GetDemandPageInfo */
 404     {
 405          DWORD dinfo = stack32_pop( context );
 406          DWORD flags = stack32_pop( context );
 407
 408          /* GetDemandPageInfo is supposed to fill out the struct at
 409           * "dinfo" with various low-level memory management information.
 410           * Apps are certainly not supposed to call this, although it's
 411           * demoed and documented by Pietrek on pages 441-443 of "Windows
 412           * 95 System Programming Secrets" if any program needs a real
 413           * implementation of this.
 414           */
 415
 416          FIXME("GetDemandPageInfo(%08x %08x): stub!\n", dinfo, flags);
 417
 418          return 0;
 419     }
 420
 421     case 0x0021:  /* RegLoadKey */
 422     {
 423         HKEY    hkey       = (HKEY)  stack32_pop( context );
 424         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 425         LPCSTR  lpszFile   = (LPCSTR)stack32_pop( context );
 426         FIXME("RegLoadKey(%p,%s,%s): stub\n",hkey, debugstr_a(lpszSubKey), debugstr_a(lpszFile));
 427         return ERROR_CALL_NOT_IMPLEMENTED;
 428     }
 429
 430     case 0x0022:  /* RegUnLoadKey */
 431     {
 432         HKEY    hkey       = (HKEY)  stack32_pop( context );
 433         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 434         FIXME("RegUnLoadKey(%p,%s): stub\n",hkey, debugstr_a(lpszSubKey));
 435         return ERROR_CALL_NOT_IMPLEMENTED;
 436     }
 437
 438     case 0x0023:  /* RegSaveKey */
 439     {
 440         HKEY    hkey       = (HKEY)  stack32_pop( context );
 441         LPCSTR  lpszFile   = (LPCSTR)stack32_pop( context );
 442         LPSECURITY_ATTRIBUTES sa = (LPSECURITY_ATTRIBUTES)stack32_pop( context );
 443         FIXME("RegSaveKey(%p,%s,%p): stub\n",hkey, debugstr_a(lpszFile),sa);
 444         return ERROR_CALL_NOT_IMPLEMENTED;
 445     }
 446
 447 #if 0 /* Functions are not yet implemented in misc/registry.c */
 448     case 0x0024:  /* RegRemapPreDefKey */
 449     case 0x0026:  /* RegQueryMultipleValues */
 450 #endif
 451
 452     case 0x0027:  /* RegReplaceKey */
 453     {
 454         HKEY    hkey       = (HKEY)  stack32_pop( context );
 455         LPCSTR  lpszSubKey = (LPCSTR)stack32_pop( context );
 456         LPCSTR  lpszNewFile= (LPCSTR)stack32_pop( context );
 457         LPCSTR  lpszOldFile= (LPCSTR)stack32_pop( context );
 458         FIXME("RegReplaceKey(%p,%s,%s,%s): stub\n", hkey, debugstr_a(lpszSubKey),
 459               debugstr_a(lpszNewFile),debugstr_a(lpszOldFile));
 460         return ERROR_CALL_NOT_IMPLEMENTED;
 461     }
 462
 463     default:
 464         if (LOWORD(service) < N_VMM_SERVICE)
 465             FIXME( "Unimplemented service %s (%08x)\n",
 466                    VMM_Service_Name[LOWORD(service)], service);
 467         else
 468             FIXME( "Unknown service %08x\n", service);
 469         return 0xffffffff;  /* FIXME */
 470     }
 471 }