Esempio n. 1
0
        /// <summary>
        /// Open a file with the Win32 CreateFile API.
        /// </summary>
        /// <param name="filename">The filename to open.</param>
        /// <param name="desired_access">The desired access.</param>
        /// <param name="share_mode">The share mode.</param>
        /// <param name="security_descriptor">Optional security descriptor.</param>
        /// <param name="inherit_handle">True to set the handle as inheritable.</param>
        /// <param name="creation_disposition">Creation disposition.</param>
        /// <param name="flags_and_attributes">Flags and attributes.</param>
        /// <param name="template_file">Optional template file.</param>
        /// <param name="throw_on_error">True to throw on error.</param>
        /// <returns>The opened file handle.</returns>
        public static NtResult <NtFile> CreateFile(string filename,
                                                   FileAccessRights desired_access,
                                                   FileShareMode share_mode,
                                                   SecurityDescriptor security_descriptor,
                                                   bool inherit_handle,
                                                   CreateFileDisposition creation_disposition,
                                                   CreateFileFlagsAndAttributes flags_and_attributes,
                                                   NtFile template_file,
                                                   bool throw_on_error)
        {
            using (var resources = new DisposableList()) {
                SECURITY_ATTRIBUTES sec_attr = null;
                if (security_descriptor != null || inherit_handle)
                {
                    sec_attr = new SECURITY_ATTRIBUTES();
                    sec_attr.bInheritHandle       = inherit_handle;
                    sec_attr.lpSecurityDescriptor = security_descriptor == null ? SafeHGlobalBuffer.Null :
                                                    resources.AddResource(security_descriptor.ToSafeBuffer());
                }

                var handle = Win32NativeMethods.CreateFile(filename, desired_access,
                                                           share_mode, sec_attr, creation_disposition, flags_and_attributes,
                                                           template_file.GetHandle());
                if (handle.IsInvalid)
                {
                    return(GetLastWin32Error().CreateResultFromDosError <NtFile>(throw_on_error));
                }

                return(new NtFile(handle).CreateResult());
            }
        }