4 * This file contains the Rtl* API functions. These should be implementable.
6 * Copyright 1996-1998 Marcus Meissner
7 * Copyright 1999 Alex Korobka
8 * Copyright 2003 Thomas Mertes
9 * Crc32 code Copyright 1986 Gary S. Brown (Public domain)
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "wine/port.h"
36 #include "wine/unicode.h"
37 #include "wine/debug.h"
38 #include "ntdll_misc.h"
40 WINE_DEFAULT_DEBUG_CHANNEL(ntdll
);
43 static RTL_CRITICAL_SECTION peb_lock
= CRITICAL_SECTION_INIT("peb_lock");
45 /* CRC polynomial 0xedb88320 */
46 static const DWORD CRC_table
[256] =
48 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
49 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
50 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
51 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
52 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
53 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
54 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
55 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
56 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
57 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
58 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
59 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
60 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
61 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
62 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
63 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
64 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
65 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
66 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
67 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
68 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
69 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
70 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
71 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
72 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
73 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
74 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
75 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
76 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
77 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
78 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
79 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
80 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
81 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
82 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
83 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
84 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
85 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
86 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
87 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
88 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
89 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
90 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
97 /***********************************************************************
98 * RtlInitializeResource (NTDLL.@)
100 * xxxResource() functions implement multiple-reader-single-writer lock.
101 * The code is based on information published in WDJ January 1999 issue.
103 void WINAPI
RtlInitializeResource(LPRTL_RWLOCK rwl
)
107 rwl
->iNumberActive
= 0;
108 rwl
->uExclusiveWaiters
= 0;
109 rwl
->uSharedWaiters
= 0;
110 rwl
->hOwningThreadId
= 0;
111 rwl
->dwTimeoutBoost
= 0; /* no info on this one, default value is 0 */
112 RtlInitializeCriticalSection( &rwl
->rtlCS
);
113 NtCreateSemaphore( &rwl
->hExclusiveReleaseSemaphore
, 0, NULL
, 0, 65535 );
114 NtCreateSemaphore( &rwl
->hSharedReleaseSemaphore
, 0, NULL
, 0, 65535 );
119 /***********************************************************************
120 * RtlDeleteResource (NTDLL.@)
122 void WINAPI
RtlDeleteResource(LPRTL_RWLOCK rwl
)
126 RtlEnterCriticalSection( &rwl
->rtlCS
);
127 if( rwl
->iNumberActive
|| rwl
->uExclusiveWaiters
|| rwl
->uSharedWaiters
)
128 MESSAGE("Deleting active MRSW lock (%p), expect failure\n", rwl
);
129 rwl
->hOwningThreadId
= 0;
130 rwl
->uExclusiveWaiters
= rwl
->uSharedWaiters
= 0;
131 rwl
->iNumberActive
= 0;
132 NtClose( rwl
->hExclusiveReleaseSemaphore
);
133 NtClose( rwl
->hSharedReleaseSemaphore
);
134 RtlLeaveCriticalSection( &rwl
->rtlCS
);
135 RtlDeleteCriticalSection( &rwl
->rtlCS
);
140 /***********************************************************************
141 * RtlAcquireResourceExclusive (NTDLL.@)
143 BYTE WINAPI
RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl
, BYTE fWait
)
149 RtlEnterCriticalSection( &rwl
->rtlCS
);
150 if( rwl
->iNumberActive
== 0 ) /* lock is free */
152 rwl
->iNumberActive
= -1;
155 else if( rwl
->iNumberActive
< 0 ) /* exclusive lock in progress */
157 if( rwl
->hOwningThreadId
== (HANDLE
)GetCurrentThreadId() )
160 rwl
->iNumberActive
--;
166 rwl
->uExclusiveWaiters
++;
168 RtlLeaveCriticalSection( &rwl
->rtlCS
);
169 if( NtWaitForSingleObject( rwl
->hExclusiveReleaseSemaphore
, FALSE
, NULL
) == WAIT_FAILED
)
171 goto start
; /* restart the acquisition to avoid deadlocks */
174 else /* one or more shared locks are in progress */
179 rwl
->hOwningThreadId
= (HANDLE
)GetCurrentThreadId();
181 RtlLeaveCriticalSection( &rwl
->rtlCS
);
185 /***********************************************************************
186 * RtlAcquireResourceShared (NTDLL.@)
188 BYTE WINAPI
RtlAcquireResourceShared(LPRTL_RWLOCK rwl
, BYTE fWait
)
190 DWORD dwWait
= WAIT_FAILED
;
195 RtlEnterCriticalSection( &rwl
->rtlCS
);
196 if( rwl
->iNumberActive
< 0 )
198 if( rwl
->hOwningThreadId
== (HANDLE
)GetCurrentThreadId() )
200 rwl
->iNumberActive
--;
207 rwl
->uSharedWaiters
++;
208 RtlLeaveCriticalSection( &rwl
->rtlCS
);
209 if( (dwWait
= NtWaitForSingleObject( rwl
->hSharedReleaseSemaphore
, FALSE
, NULL
)) == WAIT_FAILED
)
216 if( dwWait
!= WAIT_OBJECT_0
) /* otherwise RtlReleaseResource() has already done it */
217 rwl
->iNumberActive
++;
221 RtlLeaveCriticalSection( &rwl
->rtlCS
);
226 /***********************************************************************
227 * RtlReleaseResource (NTDLL.@)
229 void WINAPI
RtlReleaseResource(LPRTL_RWLOCK rwl
)
231 RtlEnterCriticalSection( &rwl
->rtlCS
);
233 if( rwl
->iNumberActive
> 0 ) /* have one or more readers */
235 if( --rwl
->iNumberActive
== 0 )
237 if( rwl
->uExclusiveWaiters
)
240 rwl
->uExclusiveWaiters
--;
241 NtReleaseSemaphore( rwl
->hExclusiveReleaseSemaphore
, 1, NULL
);
246 if( rwl
->iNumberActive
< 0 ) /* have a writer, possibly recursive */
248 if( ++rwl
->iNumberActive
== 0 )
250 rwl
->hOwningThreadId
= 0;
251 if( rwl
->uExclusiveWaiters
)
254 if( rwl
->uSharedWaiters
)
256 UINT n
= rwl
->uSharedWaiters
;
257 rwl
->iNumberActive
= rwl
->uSharedWaiters
; /* prevent new writers from joining until
258 * all queued readers have done their thing */
259 rwl
->uSharedWaiters
= 0;
260 NtReleaseSemaphore( rwl
->hSharedReleaseSemaphore
, n
, NULL
);
264 RtlLeaveCriticalSection( &rwl
->rtlCS
);
268 /***********************************************************************
269 * RtlDumpResource (NTDLL.@)
271 void WINAPI
RtlDumpResource(LPRTL_RWLOCK rwl
)
275 MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
276 rwl
, rwl
->iNumberActive
, rwl
->uSharedWaiters
, rwl
->uExclusiveWaiters
);
277 if( rwl
->iNumberActive
)
278 MESSAGE("\towner thread = %p\n", rwl
->hOwningThreadId
);
286 /******************************************************************************
289 void WINAPIV
DbgPrint(LPCSTR fmt
, ...)
295 vsprintf(buf
,fmt
, args
);
298 MESSAGE("DbgPrint says: %s",buf
);
299 /* hmm, raise exception? */
302 /******************************************************************************
303 * RtlAcquirePebLock [NTDLL.@]
305 VOID WINAPI
RtlAcquirePebLock(void)
307 RtlEnterCriticalSection( &peb_lock
);
310 /******************************************************************************
311 * RtlReleasePebLock [NTDLL.@]
313 VOID WINAPI
RtlReleasePebLock(void)
315 RtlLeaveCriticalSection( &peb_lock
);
318 /******************************************************************************
319 * RtlSetEnvironmentVariable [NTDLL.@]
321 DWORD WINAPI
RtlSetEnvironmentVariable(DWORD x1
,PUNICODE_STRING key
,PUNICODE_STRING val
) {
322 FIXME("(0x%08lx,%s,%s),stub!\n",x1
,debugstr_w(key
->Buffer
),debugstr_w(val
->Buffer
));
326 /******************************************************************************
327 * RtlNewSecurityObject [NTDLL.@]
329 DWORD WINAPI
RtlNewSecurityObject(DWORD x1
,DWORD x2
,DWORD x3
,DWORD x4
,DWORD x5
,DWORD x6
) {
330 FIXME("(0x%08lx,0x%08lx,0x%08lx,0x%08lx,0x%08lx,0x%08lx),stub!\n",x1
,x2
,x3
,x4
,x5
,x6
);
334 /******************************************************************************
335 * RtlDeleteSecurityObject [NTDLL.@]
337 DWORD WINAPI
RtlDeleteSecurityObject(DWORD x1
) {
338 FIXME("(0x%08lx),stub!\n",x1
);
342 /**************************************************************************
343 * RtlNormalizeProcessParams [NTDLL.@]
345 LPVOID WINAPI
RtlNormalizeProcessParams(LPVOID x
)
347 FIXME("(%p), stub\n",x
);
351 /**************************************************************************
352 * RtlGetNtProductType [NTDLL.@]
354 BOOLEAN WINAPI
RtlGetNtProductType(LPDWORD type
)
356 FIXME("(%p): stub\n", type
);
357 *type
=3; /* dunno. 1 for client, 3 for server? */
361 /**************************************************************************
364 * Glorified "enter xxxx".
366 void WINAPI
NTDLL_chkstk( CONTEXT86
*context
)
368 context
->Esp
-= context
->Eax
;
371 /**************************************************************************
372 * _alloca_probe [NTDLL.@]
374 * Glorified "enter xxxx".
376 void WINAPI
NTDLL_alloca_probe( CONTEXT86
*context
)
378 context
->Esp
-= context
->Eax
;
381 /**************************************************************************
382 * RtlDosPathNameToNtPathName_U [NTDLL.@]
384 * szwDosPath: a fully qualified DOS path name
385 * ntpath: pointer to a UNICODE_STRING to hold the converted
388 * FIXME: Should we not allocate the ntpath buffer under some
390 * Are the conversions static? (always prepend '\??\' ?)
391 * Not really sure about the last two arguments.
393 BOOLEAN WINAPI
RtlDosPathNameToNtPathName_U(
394 LPWSTR szwDosPath
,PUNICODE_STRING ntpath
,
398 UNICODE_STRING pathprefix
;
399 WCHAR szPrefix
[] = { '\\', '?', '?', '\\', 0 };
401 FIXME("(%s,%p,%08lx,%08lx) partial stub\n",
402 debugstr_w(szwDosPath
),ntpath
,x2
,x3
);
407 if ( !szwDosPath
[0] )
410 if ( szwDosPath
[1]!= ':' )
413 length
= strlenW(szwDosPath
) * sizeof (WCHAR
) + sizeof szPrefix
;
415 ntpath
->Buffer
= RtlAllocateHeap(ntdll_get_process_heap(), 0, length
);
417 ntpath
->MaximumLength
= length
;
419 if ( !ntpath
->Buffer
)
422 RtlInitUnicodeString( &pathprefix
, szPrefix
);
423 RtlCopyUnicodeString( ntpath
, &pathprefix
);
424 RtlAppendUnicodeToString( ntpath
, szwDosPath
);
430 /******************************************************************************
431 * RtlCreateEnvironment [NTDLL.@]
433 DWORD WINAPI
RtlCreateEnvironment(DWORD x1
,DWORD x2
) {
434 FIXME("(0x%08lx,0x%08lx),stub!\n",x1
,x2
);
439 /******************************************************************************
440 * RtlDestroyEnvironment [NTDLL.@]
442 DWORD WINAPI
RtlDestroyEnvironment(DWORD x
) {
443 FIXME("(0x%08lx),stub!\n",x
);
447 /******************************************************************************
448 * RtlQueryEnvironmentVariable_U [NTDLL.@]
450 DWORD WINAPI
RtlQueryEnvironmentVariable_U(DWORD x1
,PUNICODE_STRING key
,PUNICODE_STRING val
) {
451 FIXME("(0x%08lx,%s,%p),stub!\n",x1
,debugstr_w(key
->Buffer
),val
);
455 /******************************************************************************
456 * RtlInitializeGenericTable [NTDLL.@]
458 PVOID WINAPI
RtlInitializeGenericTable(PVOID pTable
, PVOID arg2
, PVOID arg3
, PVOID arg4
, PVOID arg5
)
460 FIXME("(%p,%p,%p,%p,%p) stub!\n", pTable
, arg2
, arg3
, arg4
, arg5
);
464 /******************************************************************************
465 * RtlMoveMemory [NTDLL.@]
467 * Move a block of memory that may overlap.
470 * Destination [O] End destination for block
471 * Source [O] Where to start copying from
472 * Length [I] Number of bytes to copy
478 VOID WINAPI
RtlMoveMemory( VOID
*Destination
, CONST VOID
*Source
, SIZE_T Length
)
480 memmove(Destination
, Source
, Length
);
483 /******************************************************************************
484 * RtlFillMemory [NTDLL.@]
486 * Set a block of memory with a value.
489 * Destination [O] Block to fill
490 * Length [I] Number of bytes to fill
491 * Fill [I] Value to set
497 VOID WINAPI
RtlFillMemory( VOID
*Destination
, SIZE_T Length
, BYTE Fill
)
499 memset(Destination
, Fill
, Length
);
502 /******************************************************************************
503 * RtlZeroMemory [NTDLL.@]
505 * Set a block of memory with 0's.
508 * Destination [O] Block to fill
509 * Length [I] Number of bytes to fill
515 VOID WINAPI
RtlZeroMemory( VOID
*Destination
, SIZE_T Length
)
517 memset(Destination
, 0, Length
);
520 /******************************************************************************
521 * RtlCompareMemory [NTDLL.@]
523 * Compare one block of memory with another
526 * Source1 [I] Source block
527 * Source2 [I] Block to compare to Source1
528 * Length [I] Number of bytes to fill
531 * The length of the first byte at which Source1 and Source2 differ, or Length
532 * if they are the same.
534 SIZE_T WINAPI
RtlCompareMemory( const VOID
*Source1
, const VOID
*Source2
, SIZE_T Length
)
537 for(i
=0; (i
<Length
) && (((LPBYTE
)Source1
)[i
]==((LPBYTE
)Source2
)[i
]); i
++);
541 /******************************************************************************
542 * RtlCompareMemoryUlong [NTDLL.@]
544 * Compare a block of memory with a value, a ULONG at a time
547 * Source1 [I] Source block. This must be ULONG aligned
548 * Length [I] Number of bytes to compare. This should be a multiple of 4
549 * dwVal [I] Value to compare to
552 * The byte position of the first byte at which Source1 is not dwVal.
554 SIZE_T WINAPI
RtlCompareMemoryUlong(const ULONG
*Source1
, SIZE_T Length
, ULONG dwVal
)
557 for(i
= 0; i
< Length
/sizeof(ULONG
) && Source1
[i
] == dwVal
; i
++);
558 return i
* sizeof(ULONG
);
561 /******************************************************************************
562 * RtlAssert [NTDLL.@]
564 * Fail a debug assertion.
567 * Nothing. This call does not return control to its caller.
570 * Not implemented in non-debug versions.
572 void WINAPI
RtlAssert(LPVOID x1
,LPVOID x2
,DWORD x3
, DWORD x4
)
574 FIXME("(%p,%p,0x%08lx,0x%08lx),stub\n",x1
,x2
,x3
,x4
);
577 /******************************************************************************
578 * RtlGetNtVersionNumbers [NTDLL.@]
580 * Get the version numbers of the run time library.
583 * major [O] Destination for the Major version
584 * minor [O] Destination for the Minor version
585 * build [O] Destination for the Build version
591 * Introduced in Windows XP (NT5.1)
593 void WINAPI
RtlGetNtVersionNumbers(LPDWORD major
, LPDWORD minor
, LPDWORD build
)
595 OSVERSIONINFOEXW versionInfo
;
596 versionInfo
.dwOSVersionInfoSize
= sizeof(OSVERSIONINFOEXW
);
597 GetVersionExW((OSVERSIONINFOW
*)&versionInfo
);
601 /* msvcrt.dll as released with XP Home fails in DLLMain() if the
602 * major version is not 5. So, we should never set a version < 5 ...
603 * This makes sense since this call didn't exist before XP anyway.
605 *major
= versionInfo
.dwMajorVersion
< 5 ? 5 : versionInfo
.dwMajorVersion
;
610 *minor
= versionInfo
.dwMinorVersion
;
615 /* FIXME: Does anybody know the real formula? */
616 *build
= (0xF0000000 | versionInfo
.dwBuildNumber
);
620 /*************************************************************************
621 * RtlFillMemoryUlong [NTDLL.@]
623 * Fill memory with a 32 bit (dword) value.
626 * lpDest [I] Bitmap pointer
627 * ulCount [I] Number of dwords to write
628 * ulValue [I] Value to fill with
633 VOID WINAPI
RtlFillMemoryUlong(ULONG
* lpDest
, ULONG ulCount
, ULONG ulValue
)
635 TRACE("(%p,%ld,%ld)\n", lpDest
, ulCount
, ulValue
);
637 ulCount
/= sizeof(ULONG
);
642 /*************************************************************************
643 * RtlGetLongestNtPathLength [NTDLL.@]
645 * Get the longest allowed path length
651 * The longest allowed path length (277 characters under Win2k).
653 DWORD WINAPI
RtlGetLongestNtPathLength(void)
659 /*********************************************************************
660 * RtlComputeCrc32 [NTDLL.@]
662 * Calculate the CRC32 checksum of a block of bytes
665 * dwInitial [I] Initial CRC value
666 * pData [I] Data block
667 * iLen [I] Length of the byte block
670 * The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
672 DWORD WINAPI
RtlComputeCrc32(DWORD dwInitial
, PBYTE pData
, INT iLen
)
674 DWORD crc
= ~dwInitial
;
676 TRACE("(%ld,%p,%d)\n", dwInitial
, pData
, iLen
);
680 crc
= CRC_table
[(crc
^ *pData
) & 0xff] ^ (crc
>> 8);
688 /*************************************************************************
689 * RtlUlonglongByteSwap [NTDLL.@]
691 * Swap the bytes of an unsigned long long value.
694 * i [I] Value to swap bytes of
697 * The value with its bytes swapped.
699 ULONGLONG __cdecl
RtlUlonglongByteSwap(ULONGLONG i
)
701 return ((ULONGLONG
)RtlUlongByteSwap(i
) << 32) | RtlUlongByteSwap(i
>>32);
704 /*************************************************************************
705 * RtlUlongByteSwap [NTDLL.@]
707 * Swap the bytes of an unsigned int value.
710 * ix86 version takes argument in %ecx. Other systems use the inline version.
713 __ASM_GLOBAL_FUNC(NTDLL_RtlUlongByteSwap
,
719 /*************************************************************************
720 * RtlUshortByteSwap [NTDLL.@]
722 * Swap the bytes of an unsigned short value.
725 * i386 version takes argument in %cx. Other systems use the inline version.
728 __ASM_GLOBAL_FUNC(NTDLL_RtlUshortByteSwap
,
735 /*************************************************************************
736 * RtlUniform [NTDLL.@]
738 * Generates an uniform random number
741 * seed [O] The seed of the Random function
744 * It returns a random number uniformly distributed over [0..MAXLONG-1].
747 * Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
748 * In our case the algorithm is:
750 * result = (*seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
755 * The native documentation states that the random number is
756 * uniformly distributed over [0..MAXLONG]. In reality the native
757 * function and our function return a random number uniformly
758 * distributed over [0..MAXLONG-1].
760 ULONG WINAPI
RtlUniform (PULONG seed
)
765 * Instead of the algorithm stated above, we use the algorithm
766 * below, which is totally equivalent (see the tests), but does
767 * not use a division and therefore is faster.
769 result
= *seed
* 0xffffffed + 0x7fffffc3;
770 if (result
== 0xffffffff || result
== 0x7ffffffe) {
771 result
= (result
+ 2) & MAXLONG
;
772 } else if (result
== 0x7fffffff) {
774 } else if ((result
& 0x80000000) == 0) {
775 result
= result
+ (~result
& 1);
777 result
= (result
+ (result
& 1)) & MAXLONG
;
784 /*************************************************************************
785 * RtlRandom [NTDLL.@]
787 * Generates a random number
790 * seed [O] The seed of the Random function
793 * It returns a random number distributed over [0..MAXLONG-1].
795 ULONG WINAPI
RtlRandom (PULONG seed
)
797 static ULONG saved_value
[128] =
798 { /* 0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
799 /* 8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
800 /* 16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
801 /* 24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
802 /* 32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
803 /* 40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
804 /* 48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
805 /* 56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
806 /* 64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
807 /* 72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
808 /* 80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
809 /* 88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
810 /* 96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
811 /* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
812 /* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
813 /* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
818 rand
= (*seed
* 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
819 *seed
= (rand
* 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
821 result
= saved_value
[pos
];
822 saved_value
[pos
] = rand
;
827 /*************************************************************************
828 * RtlAreAllAccessesGranted [NTDLL.@]
830 * Check if all desired accesses are granted
833 * TRUE: All desired accesses are granted
836 BOOLEAN WINAPI
RtlAreAllAccessesGranted(
837 ACCESS_MASK GrantedAccess
,
838 ACCESS_MASK DesiredAccess
)
840 return (GrantedAccess
& DesiredAccess
) == DesiredAccess
;
844 /*************************************************************************
845 * RtlAreAnyAccessesGranted [NTDLL.@]
847 * Check if at least one of the desired accesses is granted
850 * TRUE: At least one of the desired accesses is granted
853 BOOLEAN WINAPI
RtlAreAnyAccessesGranted(
854 ACCESS_MASK GrantedAccess
,
855 ACCESS_MASK DesiredAccess
)
857 return (GrantedAccess
& DesiredAccess
) != 0;
861 /*************************************************************************
862 * RtlMapGenericMask [NTDLL.@]
864 * Determine the nongeneric access rights specified by an access mask
869 void WINAPI
RtlMapGenericMask(
870 PACCESS_MASK AccessMask
,
871 const GENERIC_MAPPING
*GenericMapping
)
873 if (*AccessMask
& GENERIC_READ
) {
874 *AccessMask
|= GenericMapping
->GenericRead
;
877 if (*AccessMask
& GENERIC_WRITE
) {
878 *AccessMask
|= GenericMapping
->GenericWrite
;
881 if (*AccessMask
& GENERIC_EXECUTE
) {
882 *AccessMask
|= GenericMapping
->GenericExecute
;
885 if (*AccessMask
& GENERIC_ALL
) {
886 *AccessMask
|= GenericMapping
->GenericAll
;
889 *AccessMask
&= 0x0FFFFFFF;
893 /*************************************************************************
894 * RtlCopyLuid [NTDLL.@]
896 * Copies the LuidSrc to LuidDest.
901 void WINAPI
RtlCopyLuid (PLUID LuidDest
, const LUID
*LuidSrc
)
903 *LuidDest
= *LuidSrc
;
907 /*************************************************************************
908 * RtlEqualLuid [NTDLL.@]
910 * Compares two local unique ID's.
913 * TRUE: The two LUID's are equal.
916 BOOLEAN WINAPI
RtlEqualLuid (const LUID
*Luid1
, const LUID
*Luid2
)
918 return (Luid1
->LowPart
== Luid2
->LowPart
&& Luid1
->HighPart
== Luid2
->HighPart
);
922 /*************************************************************************
923 * RtlCopyLuidAndAttributesArray [NTDLL.@]
925 * Copies an array of LUID's and attributes.
930 void WINAPI
RtlCopyLuidAndAttributesArray(
932 const LUID_AND_ATTRIBUTES
*Src
,
933 PLUID_AND_ATTRIBUTES Dest
)
937 for (i
= 0; i
< Count
; i
++) Dest
[i
] = Src
[i
];