JPH0367344A - File control processing system - Google Patents

Abstract

PURPOSE:To perform an access to a file at a high speed by providing a pointer to point the necessary file control information and controlling both the pointed information and the inter-file logical information with high efficiency. CONSTITUTION:A directory 10 is provided to form a path which holds the file control information 12 and retrieves the information 12 based on a file name. At the same time, a directory 11 forms a path which shares the information 12 with the directory 10 and retrieves the information 12 of the highest rank subject to the inter-file relation. Then the information 12 are provided in response to the files 4, and the information showing the store positions of files 4 is added together with a pointer which points an area between the information 12 in order to point the relation among files 4. Thus the same information 12 is pointed when an access is given to the file 4 via the directory 10 based on the file name and also via the directory 11 based on the name of the logical relation. As a result, an immediate access is possible to the file 4.

Description

[Detailed Description of the Invention] [Summary] Regarding the management of files in a computer, the purpose is to provide a file management processing method that can efficiently manage both physical management information of files and information indicating logical relationships between files. and has a first directory and a required number of second directories, and the first directory holds predetermined file management information and constitutes a path for searching the file management information by file name. , the second directory shares the file management information with the first directory to constitute a path for searching the topmost file management information according to the required inter-file relationship, and each file management information is It is configured to have information that is provided corresponding to the file and indicates the storage location of the file, and a pointer that indicates the required file management information so as to indicate the required relationship between the files. .

[Industrial application field]

The present invention relates to file management in a computer, and particularly to a file management processing method for managing physical management information of files and information indicating logical relationships between files.

[Prior Art] As is well known, in a computer, data held in the computer is
For example, files are stored in an external storage device in units called files, each file is given a file name to identify it, and a program that requires a certain file is managed so that it can be accessed by the file name.

For this purpose, file management information corresponding to the file is provided, file storage location information and necessary management data are set, and file names are retained if necessary.For example, a tree-structured directory is created, and the Configure to access each file management information located on the node.

For example, as conceptually shown in Figure 3, the directory starts from the root node 1, and uses the node information of each node to sequentially designate lower nodes such as node 2, for example, by node number. There is file management information 3.

Each node information includes, for example, the node name, the parent node number indicating the parent node immediately above it, one or more child nodes immediately below it, and the node name of each child node (indicated by N, , lJ+z, etc.). It consists of information shown in pairs of node numbers. Each file management information 3 consists of a file name, parent node number, file storage location information 5, etc. By making the file name consist of a string of node names, the file management function can identify the root of the directory by file name. The storage location of the file 4 can be obtained by searching the file management information from the node.

[Problem to be solved by the invention]

Information for physical management of files can be managed as described above. On the other hand, from the perspective of file usage, there are files based on the contents of the files, such as the relationship between a load module file of a certain program and one or more source program files that make it look like M. There is a logical relationship between the two, and information indicating such a logical relationship is often required.

Conventionally, when such logical relationship information was required, management information had to be provided and managed separately for each necessary file group, in addition to the directory.

Therefore, for example, knowing the logical relationship of files and accessing a certain file by directory must be processed separately, resulting in poor access processing efficiency and management that is difficult to manage according to additions and deletions of files. There are also problems with information maintenance, such as the need for double processing.

An object of the present invention is to provide a file management processing method that makes it possible to efficiently manage both physical management information of files and information indicating logical relationships between files.

[Means to solve the problem] FIG. 1 is a block diagram showing the configuration of the present invention.

The figure shows a file management processing system, which includes a first directory 10 and a required number of second directories II,
The first directory 10 contains predetermined file management information 1
2 to configure a path for searching file management information I2 by file name, and the second directory 11 shares the file management information 12 with the first directory 10 so as to configure the file management information I2 according to the required inter-file relationship. It constitutes a path to search for higher-level file management information 12, and each file management information 12 is provided corresponding to each file 4, and includes information indicating the storage location of the file and indicating the required relationship between the files. The file management information 12 has a pointer that indicates the required file management information 12 so that the file management information 12 can be accessed.

[For production]

With the above processing method, the physical management information of files and the information indicating the logical relationships between files are collectively managed as file management information, so there is no need to manage the logical relationship information of files separately. File access and maintenance can be handled efficiently.

〔Example〕

FIG. 2 is a diagram illustrating a configuration in which the directory illustrated in FIG. 3 is used as a first directory of the present invention, and a second directory is provided therein.

The first directory has a tree structure starting from the root node 1, similar to the conventional configuration, so that the file management information 23 of the present invention, which replaces the conventional file management information 3, can be searched via the node 2. The file management information 23 is the same as the conventional file management information 3, except that it includes a pointer between file management information, which will be described later, and holds information indicating the file name and the storage location of the file 4.

provide a root node 21 for the second directory;
The required file management information 23 can be searched from the root node 2I through the nodes 22 of the necessary hierarchy. For this purpose, the root node 21 and the intermediate nodes 22 have the same configuration as the root node 1 and the node 2, and configure the same tree structure, but instead of using file names like the first directory, for example, the necessary It is configured to search by name (indicated by 1, +, Lll, etc.) indicating a logical relationship.

In this way, when the file management information 23 for the topmost file in the logical relationship is connected to the leaf node of the second directory, the necessary file management information 23 can be sequentially indicated from here using the pointer 24 as shown in the figure. to represent the logical relationship between files. The value set in the pointer may be the node number of the file management information, as in the case of nodes. For convenience of management, in the same way that each node and file management information has a node number indicating the parent node in the first directory,
The file management information 23 also includes a node number indicating a parent node in the second directory or a node number indicating a parent file in an inter-file link by a pointer between file management information.

As described above, the same file management information 23 is reached whether the first directory is accessed by a file name or the second directory is accessed by a logically related name, so the necessary file can be accessed immediately.

Further, when deleting a certain file, for example, the parent file and child file in the logical relationship can be immediately identified from the file management information 23, so it is easy to change the link in the logical relationship as the file is deleted. comes out. Furthermore, when changing a file name or moving a storage location, it is only necessary to change the information regarding the first directory, and the change does not affect the second directory.

Since the displayed information can be managed efficiently, there is a significant industrial effect of improving the usability and processing efficiency of computers.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is a diagram explaining the present invention in detail, and FIG. 3 is a diagram explaining an example of a conventional configuration. In the figure, 1.21 is the root node, 2.22 is the node, 3.23
is file management information, 4 is file, 5 is storage location information, and 24 is a logical relationship pointer [Effects of the Invention] As is clear from the above description, according to the present invention, when managing files in a computer, the physical Figure 1 is a diagram illustrating the configuration of the present invention, showing the logical relationship between management information and files.Figure 1 is a diagram explaining an example of a conventional configuration.

Claims (1)

[Claims] It has a first directory (10) and a required number of second directories (11), and the first directory (10) holds predetermined file management information (12). to configure a path to search for the file management information by file name, and the second directory (11) contains the file management information (
12) is shared with the first directory (10) to constitute a path for searching the top-level file management information according to the required inter-file relationship, and each file management information (12) is shared with the first directory (10). 4)
A file that is provided corresponding to the file and has information indicating the storage location of the file and a pointer that indicates the required file management information so as to indicate the required relationship between the files. Management processing method.