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GetFileSecurity

The GetFileSecurity function obtains specified information about the security of a file or directory. The information obtained is constrained by the caller's access rights and privileges.

VB4-32,5,6
Declare Function GetFileSecurity Lib "advapi32.dll" Alias "GetFileSecurityA" (ByVal lpFileName As String, ByVal RequestedInformation As Long, pSecurityDescriptor As Byte, ByVal nLength As Long, lpnLengthNeeded As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Win9x/ME: Not supported

Library
Advapi32

Parameter Information
lpFileName
[in] Pointer to a null-terminated string specifying the file or directory for which security information is retrieved.

RequestedInformation
[in] Specifies a SECURITY_INFORMATION value that identifies the security information being requested.

pSecurityDescriptor
[out] Pointer to a buffer that receives a copy of the security descriptor of the object specified by the lpFileName parameter. The calling process must have the right to view the specified aspects of the object's security status. The SECURITY_DESCRIPTOR structure is returned in self-relative format.

nLength
[in] Specifies the size, in bytes, of the buffer pointed to by the pSecurityDescriptor parameter.

lpnLengthNeeded
[out] Pointer to a variable the function sets to zero if the file descriptor is copied successfully. If the buffer is too small for the security descriptor, this variable receives the number of bytes required. If this variable's value is greater than that of the nLength parameter when the function returns, none of the security descriptor is copied to the buffer.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Examples

Related Functions

 

 


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