SetFileSecurity

The SetFileSecurity function sets the security of a file or directory object.

BOOL SetFileSecurity(
  LPCTSTR lpFileName,  // address of string for filename
  SECURITY_INFORMATION SecurityInformation,
                       // type of information to set
  PSECURITY_DESCRIPTOR pSecurityDescriptor 
                       // address of security descriptor
);
 

Parameters

lpFileName

Points to a null-terminated string specifying the file or directory for which security is set.

SecurityInformation

Specifies a SECURITY_INFORMATION structure identifying the contents of the security descriptor pointed to by the pSecurityDescriptor parameter.

pSecurityDescriptor

Points to a SECURITY_DESCRIPTOR structure.

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

The SetFileSecurity function is successful only if the following conditions are met:

• If the object's owner is being set, the calling process must have either WRITE_OWNER permission or be the object's owner.
• If the object's discretionary access-control list (ACL) is being set, the calling process must have either WRITE_DAC permission or be the object's owner.
• If the object's system ACL is being set, the SE_SECURITY_NAME privilege must be enabled for the calling process.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Unsupported.
  Windows CE: Unsupported.
  Header: Declared in winbase.h.
  Import Library: Use advapi32.lib.
  Unicode: Implemented as Unicode and ANSI versions on Windows NT.

See Also

Low-Level Access-Control Overview, Low-Level Access Control Functions, GetFileSecurity, SECURITY_DESCRIPTOR, SECURITY_INFORMATION, SetKernelObjectSecurity, SetPrivateObjectSecurity, SetUserObjectSecurity