Method and system for safely transmitting data among parallel-running multiple user operating systems

An operating system and data security technology, applied in the computer field, can solve the problems of inconvenient operation and low security of data transmission methods that cannot be transmitted, and achieve the effects of convenient operation, security and isolation

CN102110196AActive Publication Date: 2011-06-29CHINA GREATWALL TECH GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-06-29

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Abstract

The invention is suitable for the technical field of computers, providing a method and system for safely transmitting data among parallel-running multiple user operating systems. The method comprises the following steps: a data transmission module applies for a shared physical memory; the data transmission module applies for a virtual memory page from the operating system; the data transmission module converts the virtual address of the virtual memory page to generate a physical address corresponding to the virtual address, and stores the direct mapping relationship between the virtual address and the physical address in front of the shared physical memory; the data transmission module transmits the physical address of the virtual memory page to a virtual machine monitor to achieve the purpose of mapping the virtual address to the physical address again; the virtual machine monitor maps the physical addresses submitted by the user operating systems to the same shared physical memory; and the data transmission module writes data into the shared physical memory or reads data from the shared physical memory. By utilizing the method and the system, data can be exchanged without a third party tool, and the operation is safe and convenient.
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Description

technical field

[0001] The invention belongs to the technical field of computers, and in particular relates to a method and a system for safely transmitting data between operating systems of multiple users running in parallel. Background technique

[0002] The traditional multi-user (dual) operating system parallel operation scheme is realized through the complete independent operation of multiple hosts. In this way, the data transmission between multi-(dual) user operating systems must rely on external storage devices, such as through U disk, Hard disks, etc., are inconvenient to operate, and these external storage devices may be stolen, lost or infected with viruses, posing security risks; the other is to use traditional hard disk sharing technology. However, these two technologies are all data sharing methods used when multiple hosts run multi-user (dual) operating systems independently, and are not suitable for computer systems in which multiple (dual) user operating sys...

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] In the embodiment of the present invention, by first applying for the shared physical memory, the physical addresses of the virtual memory pages applied by the users of the first operating system and the second operating system are all pointed to the physical memory, and then write to the shared physical memory Data exchange can be completed by inputting data or reading data from the shared physical memory.

[0036] figure 1 It shows the architecture of the computer system with parallel operation of multi-user operating systems provided by the embodiment of the present invention. In this em...