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GetKernelObjectSecurity info  Overview  Group

The GetKernelObjectSecurity function retrieves a copy of the security descriptor protecting a kernel object.

BOOL GetKernelObjectSecurity(

    HANDLE Handle,

// handle of object to query

    SECURITY_INFORMATION RequestedInformation,

// requested information

    PSECURITY_DESCRIPTOR pSecurityDescriptor,

// address of security descriptor

    DWORD nLength,

// size of buffer for security descriptor

    LPDWORD lpnLengthNeeded 

// address of required size of buffer

   );

Parameters

Handle
Identifies a kernel object.
RequestedInformation
Specifies a SECURITY_INFORMATION value that identifies the security information being requested.
pSecurityDescriptor
Points to a buffer the function fills with a copy of the security descriptor of the specified object. The calling process must have the right to view the specified aspects of the objectís security status. The SECURITY_DESCRIPTOR structure is returned in self-relative format.
nLength
Specifies the size, in bytes, of the buffer pointed to by the pSecurityDescriptor parameter.
lpnLengthNeeded
Points to a variable the function sets to zero if the descriptor is copied successfully. If the buffer is too small for the security descriptor, this variable receives the number of bytes required. If this variableís value is greater than the value 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.

Remarks

To read the owner, group, or DACL from the kernel objectís security descriptor, the calling process must have been granted READ_CONTROL access when the handle was opened. To get READ_CONTROL access, the caller must be the owner of the object or the object's DACL must grant the access.

To read the SACL from the security descriptor, the calling process must have been granted ACCESS_SYSTEM_SECURITY access when the handle was opened. The proper way to get this access is to enable the SE_SECURITY_NAME privilege in the caller's current token, open the handle for ACCESS_SYSTEM_SECURITY access, and then disable the privilege.

See Also

GetFileSecurity, GetPrivateObjectSecurity, GetUserObjectSecurity, SECURITY_DESCRIPTOR, SECURITY_INFORMATION, SetKernelObjectSecurity


file: /Techref/os/win/api/win32/func/src/f33_4.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2022/9/25 01:01,
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