78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
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//+----------------------------------------------------------------------------
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//
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// Copyright (C) 1992, Microsoft Corporation.
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//
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// File: dfsrtl.c
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//
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// Contents:
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//
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// Functions: DfsRtlPrefixPath - Is one path a prefix of another?
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//
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// History: 27 May 1992 PeterCo Created.
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//
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//-----------------------------------------------------------------------------
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#ifdef KERNEL_MODE
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#include "dfsprocs.h"
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#include "dfsrtl.h"
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#define Dbg (DEBUG_TRACE_RTL)
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#endif
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text( PAGE, DfsRtlPrefixPath )
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#endif // ALLOC_PRAGMA
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//+-------------------------------------------------------------------
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//
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// Function: DfsRtlPrefixPath, local
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//
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// Synopsis: This routine will return TRUE if the first string argument
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// is a path name prefix of the second string argument.
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//
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// Arguments: [Prefix] -- Pointer to target device object for
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// the request.
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// [Test] -- Pointer to I/O request packet
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// [IgnoreCase] -- TRUE if the comparison should be done
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// case-insignificant.
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//
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// Returns: BOOLEAN - TRUE if Prefix is a prefix of Test and the
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// comparison ends at a path separator character.
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//
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//--------------------------------------------------------------------
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BOOLEAN
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DfsRtlPrefixPath (
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IN PUNICODE_STRING Prefix,
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IN PUNICODE_STRING Test,
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IN BOOLEAN IgnoreCase
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) {
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int cchPrefix;
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if (Prefix->Length > Test->Length) {
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return FALSE;
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}
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cchPrefix = Prefix->Length / sizeof (WCHAR);
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if (Prefix->Length < Test->Length &&
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Test->Buffer[cchPrefix] != L'\\') {
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return FALSE;
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}
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return( RtlPrefixUnicodeString( Prefix, Test, IgnoreCase ) );
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}
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