CN103577246A - Method and device for preventing virtual machine from escaping - Google Patents
Method and device for preventing virtual machine from escaping Download PDFInfo
- Publication number
- CN103577246A CN103577246A CN201310560897.9A CN201310560897A CN103577246A CN 103577246 A CN103577246 A CN 103577246A CN 201310560897 A CN201310560897 A CN 201310560897A CN 103577246 A CN103577246 A CN 103577246A
- Authority
- CN
- China
- Prior art keywords
- disk
- attribute
- virtual machine
- operating system
- target disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a method and device for preventing a virtual machine from escaping. The method for preventing the virtual machine from escaping comprises the steps of obtaining attributes of a target disk, wherein the target disk is a disk installed on an operating system of the virtual machine; judging whether the attributes are preset attributes or not, wherein the preset attributes represent that replacement of the operating system is forbidden; conducting zero clearing on a disk partition table of the target disk under the situation that the attributes are judged to be the preset attributes. According to the method and device for preventing the virtual machine from escaping, the problem that the virtual machine easily escapes is solved, and therefore the effect that the virtual machine is not separated from control by a management platform is achieved.
Description
Technical field
The present invention relates to computer realm, in particular to a kind of method and apparatus that prevents that virtual machine from escaping.
Background technology
Virtual desktop operating system has advantages of centralized management, is convenient to the PC of company, centralized management company of IT department of group, if but there is employee that system is reinstalled, it has just fled from the control of the management platform of company so.More popular saying, what is called prevents that virtual machine from escaping, and is exactly to forbid that user reinstalls operating system in virtual machine in fact, thereby original system is covered or install dual system, multisystem even.
For virtual machine in correlation technique, easily there is the problem of escaping, not yet provide at present effective solution.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method and apparatus that prevents that virtual machine from escaping, and to solve virtual machine, easily occurs the problem of escaping.
To achieve these goals, according to an aspect of the present invention, provide a kind of method that prevents that virtual machine from escaping, having comprised: obtain the attribute of target disk, wherein, target disk is the disk that VME operating system is installed; Judge whether attribute is default attribute, and wherein, default attribute representation forbids replacement operation system; And in the situation that judging attribute for default attribute, by the disk partition table zero clearing of target disk.
Further, in operating system, in carry out, under write operation state, obtaining the attribute of target disk to A sector, wherein, A sector is sector, disk partition table place.
Further, the disk partition table zero clearing of target disk is comprised: will write the data zero clearing of A sector.
Further, operating system installation is on the virtual disk of virtual machine, and the format information of virtual disk comprises the attribute tags of target disk, and the attribute that obtains target disk comprises: the attribute that obtains target disk in dependency label.
Further, before by the disk partition table zero clearing of target disk, prevent that the method that virtual machine is escaped from also comprising: backup disk partition table.
To achieve these goals, according to another aspect of the present invention, provide a kind of device that prevents that virtual machine from escaping, this device prevents the method for virtual machine escape for any that carry out that foregoing of the present invention provides.
To achieve these goals, according to another aspect of the present invention, provide a kind of device that prevents that virtual machine from escaping, having comprised: acquiring unit, for obtaining the attribute of target disk, wherein, target disk is the disk that VME operating system is installed; Judging unit, for judging whether attribute is default attribute, and wherein, default attribute representation forbids replacement operation system; And zero clearing unit, in the situation that judging attribute for default attribute, by the disk partition table zero clearing of target disk.
Further, acquiring unit is in operating system in carrying out, under write operation state, obtaining the attribute of target disk to A sector, and wherein, A sector is sector, disk partition table place.
Further, zero clearing unit comprises: dump block, and for writing the data zero clearing of A sector.
Further, operating system installation is on the virtual disk of virtual machine, and the format information of virtual disk comprises the attribute tags of target disk, and acquiring unit comprises: acquisition module, obtains the attribute of target disk for dependency label.
Further, prevent that the device that virtual machine is escaped from also comprising: backup units, for before by the disk partition table zero clearing of target disk, backup disk partition table.
The present invention adopts the attribute that obtains target disk, and wherein, target disk is the disk that VME operating system is installed, judge whether attribute is default attribute, and wherein, default attribute representation forbids replacement operation system, and in the situation that judging attribute for default attribute, by the method for the disk partition table zero clearing of target disk, the operating system or increase new operating system in virtual machine if reset, the disk partition table that first step must retouching operation system target disk of living in, by by the disk partition table zero clearing of target disk, the operation that prevention is changed the partition table of operating system, realized the process that stops refitting system, thereby can prevent illegally reset operating system or increase illegal operating system of user, solve virtual machine and easily occurred the problem of escaping, and then reached and guaranteed the virtual machine effect that out of control platform is not controlled.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram that prevents the method that virtual machine is escaped according to the first embodiment of the present invention;
Fig. 2 is the process flow diagram that prevents the method that virtual machine is escaped according to a second embodiment of the present invention;
Fig. 3 is the structural representation that prevents the device that virtual machine is escaped according to the first embodiment of the present invention; And
Fig. 4 is the structural representation that prevents the device that virtual machine is escaped according to a second embodiment of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The embodiment of the present invention provides a kind of method that prevents that virtual machine from escaping, below the method that virtual machine is escaped that prevents that the embodiment of the present invention is provided be specifically introduced:
Fig. 1 is the process flow diagram that prevents the method that virtual machine is escaped according to first embodiment of the invention, and as shown in Figure 1, the method comprises that following step S102 is to step S106:
Step S102, obtains the attribute of target disk, and wherein, target disk is the disk that VME operating system is installed.The virtual disk of virtual machine has inherent form logic as the disc driver of virtual disk, and the disc driver of virtual disk can pass through reading disk format information, obtains the attribute of target disk.
Step S104, judges whether the attribute of target disk is default attribute.Default attribute representation forbids replacement operation system.If target disk is derivative disk, the attribute of system is for forbidding replacement operation system.Derivative virtual disk is the copy of basic virtual disk, for user.Basis virtual disk has read only attribute, is the reference point of system.
Step S106, in the situation that judging attribute for default attribute, by the disk partition table zero clearing of target disk.The operating system or increase new operating system in virtual machine if user will reset, the first step must be revised the partition table of virtual disk (that is, the residing disk of operating system).The subregion epi-position of virtual disk and first logic sector of virtual disk (hereinafter referred to as A sector), when having data to be written into this sector, if carrying out the attribute of the target disk of write operation is default attribute, by the disk partition table zero clearing of target disk, the process of refitting system is terminated.Particularly, in embodiments of the present invention, can adopt by writing the mode of the data zero clearing of A sector, by the disk partition table zero clearing of target disk.
If reset operating system, the disk partition table that first step must modifying target disk, the method that prevents virtual machine escape of first embodiment of the invention, by by the disk partition table zero clearing of target disk, the operation that prevention is changed the partition table of operating system, realized the process that stops refitting system, thereby can prevent illegally reset operating system or increase illegal operating system of user, solved virtual machine and held fugacious problem, thereby reached, made the derivative mirror-image system effect that out of control platform is not controlled.
Further, for obtaining of target disk attribute, can be in operating system in carrying out carrying out under write operation state to A sector, that is, in operating system in carry out, under write operation state, obtaining the attribute of target disk to A sector.
If operating system is not in carrying out under write operation state to A sector, illustrate that disk partition table does not have to be modified, now, can not realize refitting operating system or newly-increased operating system, only in system, in carry out checking under write operation state target disk attribute to A sector, can save the resource of virtual machine, thereby reach the effect that improves virtual machine work efficiency.
Further, operating system installation is on the virtual disk of virtual machine, the format information of virtual disk comprises the attribute tags of target disk, and the embodiment of the present invention provides prevents the method that virtual machine is escaped, and obtains the attribute of operating system in can dependency label.
Further, the serve as reasons virtual disk of mirror-image format of the virtual machine simulation softward QEUM emulation of increasing income of virtual disk, disc format is qcow2.Adopt the image file of qcow2 form to manage disk.
Fig. 2 is the process flow diagram that prevents the method that virtual machine is escaped according to second embodiment of the invention, the shown method that prevents that virtual machine from escaping of this second embodiment, can be used as a kind of preferred embodiment that prevents the method that virtual machine is escaped of first embodiment of the invention, as shown in Figure 2, the method comprises that following step S202 is to step S208:
Step S202, obtains the attribute of virtual machine target disk, and wherein, target disk is the disk that VME operating system is installed.The target disk of virtual machine has inherent form logic as the disc driver of virtual disk, and the disc driver of virtual disk can pass through reading disk format information, obtains the attribute of virtual machine target disk.
Step S204, judges whether the attribute of target disk is default attribute.Default attribute representation forbids replacement operation system.If target disk is derivative disk, the attribute of system is for forbidding replacement operation system.Derivative virtual disk is the copy of basic virtual disk, for user.Basis virtual disk has read only attribute, is the reference point of system.
Step S206, is default attribute in the situation that judge the attribute of target disk, backup partition table information.If the partition table of the virtual disk of operating system is cleared, operating system cannot start.After being cleared at virtual disk partition table, recover target disk, before zero clearing, first back up partition table.
Step S208, by the disk partition table zero clearing of target disk.The operating system or increase new operating system in virtual machine if user will reset, the first step must be revised the partition table of virtual disk.The subregion epi-position of virtual disk and the A sector of virtual disk, when having data to be written into this sector, be default attribute if carry out the attribute of the target disk of write operation, and by the disk partition table zero clearing of target disk, the process of refitting system is terminated.Particularly, in embodiments of the present invention, can adopt by writing the mode of the data zero clearing of A sector, by the disk partition table zero clearing of target disk.
By the partition table of standby virtual disk, stoping flavor user to reset in system, follow-uply can recover original operating system with the partition table of backup, user can continue to use original operating system.
Further, for obtaining of target disk attribute, can be in operating system in carrying out carrying out under write operation state to A sector, that is, in operating system in carry out, under write operation state, obtaining the attribute of target disk to A sector.
If operating system is not in carrying out under write operation state to A sector, illustrate that disk partition table does not have to be modified, now, can not realize refitting operating system or newly-increased operating system, only in system, in carry out check system attribute under write operation state to A sector, can save the resource of virtual machine, thereby reach the effect that improves virtual machine work efficiency.
Further, operating system installation is on the virtual disk of virtual machine, the format information of virtual disk comprises the attribute tags of target disk, and the embodiment of the present invention provides prevents the method that virtual machine is escaped, and obtains the attribute of target disk in can dependency label.
Further, the serve as reasons virtual disk of mirror-image format of the virtual machine simulation softward QEUM emulation of increasing income of virtual disk, disc format is qcow2.Adopt the image file of qcow2 form to manage disk.
The embodiment of the present invention also provides a kind of device that prevents that virtual machine from escaping, this device that prevents that virtual machine from escaping is mainly used in carrying out the method that virtual machine is escaped that prevents that embodiment of the present invention foregoing provides, below the device that virtual machine is escaped that prevents that the embodiment of the present invention is provided be specifically introduced:
Fig. 3 is the structural representation that prevents the device that virtual machine is escaped according to first embodiment of the invention, and as shown in Figure 3, this device that prevents that virtual machine from escaping comprises acquiring unit 10, judging unit 20 and zero clearing unit 40
Acquiring unit 10 is for obtaining the attribute of virtual machine target disk, and wherein, target disk is the disk that VME operating system is installed.The virtual disk of virtual machine has inherent form logic as the disc driver of virtual disk, and the disc driver of virtual disk can pass through reading disk format information, obtains the attribute of virtual machine target disk.
Judging unit 20 is for judging whether attribute is default attribute.Default attribute representation forbids replacement operation system.Basis virtual disk allows installing operating system, when having installed operating system, is set to read-onlyly, then can derive derivative virtual disk, and now derivative virtual disk has been inherited the operating system being installed on it from basic virtual disk; If virtual disk (target disk) is derivative virtual disk, the attribute of disk is to forbid replacing the operating system being installed on it.Derivative virtual disk is the copy of basic virtual disk, for user.Basis virtual disk has read only attribute, is the reference point of system.
Zero clearing unit 40 is in the situation that judging attribute for default attribute, by the disk partition table zero clearing of target disk.The operating system or increase new operating system in virtual machine if user will reset, the first step must be revised the partition table of virtual disk.The subregion epi-position of virtual disk and the A sector of virtual disk, when having data to be written into this sector, be default attribute if carry out the attribute of the target disk of write operation, and by the disk partition table zero clearing of target disk, the process of refitting system is terminated.Particularly, in embodiments of the present invention, can adopt by writing the mode of the data zero clearing of A sector, by the disk partition table zero clearing of target disk.
If reset operating system, the disk partition table that first step must modifying target disk, the method that prevents virtual machine escape of first embodiment of the invention, by by the disk partition table zero clearing of target disk, the operation that prevention is changed the partition table of operating system, realized the process that stops refitting system, thereby can prevent illegally reset operating system or increase illegal operating system of user, solved virtual machine and held fugacious problem, thereby reached, made the derivative mirror-image system effect that out of control platform is not controlled.
Fig. 4 is the schematic diagram that prevents the device that virtual machine is escaped according to second embodiment of the invention.The shown device that prevents that virtual machine from escaping of this second embodiment, can be used as a kind of preferred embodiment that prevents the device that virtual machine is escaped of first embodiment of the invention, as shown in Figure 4, this device that prevents that virtual machine from escaping comprises acquiring unit 10, judging unit 20, backup units 30 and zero clearing unit 40.
Acquiring unit 10 is for obtaining the attribute of virtual machine target disk, and wherein, target disk is the disk that VME operating system is installed.The virtual disk of virtual machine has inherent form logic as the disc driver of virtual disk, and the disc driver of virtual disk can pass through reading disk format information, obtains the attribute of virtual machine target disk.
Judging unit 20 is for judging whether attribute is default attribute.Default attribute representation forbids replacement operation system.Basis virtual disk allows installing operating system, when having installed operating system, is set to read-onlyly, then can derive derivative virtual disk, and now derivative virtual disk has been inherited the operating system being installed on it from basic virtual disk; If virtual disk (target disk) is derivative virtual disk, the attribute of disk is to forbid replacing the operating system being installed on it.Derivative virtual disk is the copy of basic virtual disk, for user.Basis virtual disk has read only attribute, is the reference point of system.
Backup units 30 for judge attribute for default attribute at judging unit 20 in the situation that, is preserved the partition table of virtual disk before will data writing zero clearing.If the partition table of the virtual disk of operating system is cleared, operating system cannot start.For the ease of recovery operation system after being cleared at virtual disk partition table, before zero clearing, first back up partition table.
Zero clearing unit 40 is for by the disk partition table zero clearing of target disk.The operating system or increase new operating system in virtual machine if user will reset, the first step must be revised the partition table of virtual disk.The subregion epi-position of virtual disk and the A sector of virtual disk, when having data to be written into this sector, be default attribute if carry out the attribute of the target disk of write operation, and by the disk partition table zero clearing of target disk, the process of refitting system is terminated.Particularly, in embodiments of the present invention, can adopt by writing the mode of the data zero clearing of A sector, by the disk partition table zero clearing of target disk.
By the partition table of standby virtual disk, stoping flavor user to reset in system, follow-uply can recover original operating system with the partition table of backup, user can continue to use original operating system.
From above description, can find out, the present invention has realized following technique effect: by by the disk partition table zero clearing of target disk, the operation that prevention is changed the partition table of target disk, realized the process that stops refitting system, thereby can prevent illegally reset operating system or increase illegal operating system of user, solve virtual machine and held fugacious problem, thereby reached, make the derivative mirror-image system effect that out of control platform is not controlled.
It should be noted that, in the step shown in the process flow diagram of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. prevent the method that virtual machine is escaped, it is characterized in that, comprising:
Obtain the attribute of target disk, wherein, described target disk is the disk that described VME operating system is installed;
Judge whether described attribute is default attribute, and wherein, described default attribute representation forbids replacing described operating system; And
In the situation that judging described attribute and being described default attribute, by the disk partition table zero clearing of described target disk.
2. the method that prevents that virtual machine from escaping according to claim 1, is characterized in that, in described operating system, in carry out, under write operation state, obtaining the attribute of described target disk to A sector, wherein, described A sector is sector, described disk partition table place.
3. the method that prevents that virtual machine from escaping according to claim 2, is characterized in that, the disk partition table zero clearing of described target disk is comprised:
The data zero clearing of described A sector will be write.
4. the method that prevents that virtual machine from escaping according to claim 1, it is characterized in that, described operating system installation is on the virtual disk of described virtual machine, and the format information of described virtual disk comprises the attribute tags of described target disk, and the attribute that obtains target disk comprises:
From described attribute tags, obtain the attribute of described target disk.
5. the method that prevents that virtual machine from escaping according to claim 1, is characterized in that, before by the disk partition table zero clearing of described target disk, described in prevent that the method that virtual machine is escaped from also comprising:
Back up described disk partition table.
6. prevent the device that virtual machine is escaped, it is characterized in that, comprising:
Acquiring unit, for obtaining the attribute of target disk, wherein, described target disk is the disk that described VME operating system is installed;
Judging unit, for judging whether described attribute is default attribute, and wherein, described default attribute representation forbids replacing described operating system; And
Zero clearing unit, in the situation that judging described attribute and being described default attribute, by the disk partition table zero clearing of described target disk.
7. the device that prevents that virtual machine from escaping according to claim 6, it is characterized in that, described acquiring unit in described operating system in carry out, under write operation state, obtaining the attribute of described target disk to A sector, wherein, described A sector is sector, described disk partition table place.
8. the device that prevents that virtual machine from escaping according to claim 7, is characterized in that, described zero clearing unit comprises:
Dump block, for writing the data zero clearing of described A sector.
9. the device that prevents that virtual machine from escaping according to claim 6, it is characterized in that, described operating system installation is on the virtual disk of described virtual machine, and the format information of described virtual disk comprises the attribute tags of described target disk, and described acquiring unit comprises:
Acquisition module, for obtaining the attribute of described target disk from described attribute tags.
10. the device that prevents that virtual machine from escaping according to claim 6, is characterized in that, described in prevent that the device that virtual machine is escaped from also comprising:
Backup units, for before by the disk partition table zero clearing of described target disk, backs up described disk partition table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560897.9A CN103577246B (en) | 2013-11-12 | 2013-11-12 | The method and apparatus for preventing virtual machine from escaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560897.9A CN103577246B (en) | 2013-11-12 | 2013-11-12 | The method and apparatus for preventing virtual machine from escaping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103577246A true CN103577246A (en) | 2014-02-12 |
| CN103577246B CN103577246B (en) | 2017-05-31 |
Family
ID=50049091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560897.9A Expired - Fee Related CN103577246B (en) | 2013-11-12 | 2013-11-12 | The method and apparatus for preventing virtual machine from escaping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103577246B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590058A (en) * | 2015-12-18 | 2016-05-18 | 北京奇虎科技有限公司 | Virtual machine escape detection method and apparatus |
| CN105590059A (en) * | 2015-12-18 | 2016-05-18 | 北京奇虎科技有限公司 | Method and device for detecting virtual machine escape |
| CN106203091A (en) * | 2016-06-30 | 2016-12-07 | 北京奇虎科技有限公司 | A kind of virtual machine escape detection method and device |
| CN105608374B (en) * | 2015-12-18 | 2019-04-19 | 北京奇虎科技有限公司 | The detection method and device of virtual machine escape |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517888A (en) * | 2003-01-15 | 2004-08-04 | 挹光科技股份有限公司 | Method for protecting data of storage unit and system |
| CN1241120C (en) * | 2001-08-31 | 2006-02-08 | 联想(北京)有限公司 | Method for backing up and recovering data in hard disk of computer |
| US20090037720A1 (en) * | 2007-07-31 | 2009-02-05 | Wistron Corp. | Hard Disk Security Method in a Computer System |
| CN103136487A (en) * | 2013-03-26 | 2013-06-05 | 厦门市美亚柏科信息股份有限公司 | Method, device and system for managing data in hard disc hidden area |
-
2013
- 2013-11-12 CN CN201310560897.9A patent/CN103577246B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241120C (en) * | 2001-08-31 | 2006-02-08 | 联想(北京)有限公司 | Method for backing up and recovering data in hard disk of computer |
| CN1517888A (en) * | 2003-01-15 | 2004-08-04 | 挹光科技股份有限公司 | Method for protecting data of storage unit and system |
| US20090037720A1 (en) * | 2007-07-31 | 2009-02-05 | Wistron Corp. | Hard Disk Security Method in a Computer System |
| CN103136487A (en) * | 2013-03-26 | 2013-06-05 | 厦门市美亚柏科信息股份有限公司 | Method, device and system for managing data in hard disc hidden area |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590058A (en) * | 2015-12-18 | 2016-05-18 | 北京奇虎科技有限公司 | Virtual machine escape detection method and apparatus |
| CN105590059A (en) * | 2015-12-18 | 2016-05-18 | 北京奇虎科技有限公司 | Method and device for detecting virtual machine escape |
| CN105608374B (en) * | 2015-12-18 | 2019-04-19 | 北京奇虎科技有限公司 | The detection method and device of virtual machine escape |
| CN106203091A (en) * | 2016-06-30 | 2016-12-07 | 北京奇虎科技有限公司 | A kind of virtual machine escape detection method and device |
| CN106203091B (en) * | 2016-06-30 | 2019-02-22 | 北京奇虎科技有限公司 | A kind of virtual machine escape detection method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103577246B (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8429745B1 (en) | Systems and methods for data loss prevention on mobile computing systems | |
| US9246941B1 (en) | Systems and methods for predicting the impact of security-policy changes on users | |
| AU2012347883B2 (en) | System and method for restoring application data | |
| CN104375872B (en) | A kind of Android system realizes the method and device of quick turn-on | |
| CN110704184B (en) | Application memory optimization method and device and mobile terminal | |
| CN103403680A (en) | Contextual history of computing objects | |
| CN104462612A (en) | Method and device for monitoring database information | |
| US20210042109A1 (en) | Firmware management | |
| CN103577246A (en) | Method and device for preventing virtual machine from escaping | |
| US11461282B2 (en) | Systems and methods for write-once-read-many storage | |
| CN103544446A (en) | Method and device for security classification calibration of files | |
| US9342550B1 (en) | Systems and methods for preventing data loss via temporary-file generating applications | |
| CN102663313B (en) | Method for realizing information security of computer system | |
| US20170068915A1 (en) | Computer implemented system and method for dynamically optimizing business processes | |
| CN106354773B (en) | Method and device for storing data by application program | |
| CN103677893B (en) | Method for reducing size of image file of starting up and arithmetic device | |
| CN103150159A (en) | Identifier generation using named objects | |
| US8650160B1 (en) | Systems and methods for restoring multi-tier applications | |
| US9037792B1 (en) | Systems and methods for providing caching for applications with solid-state storage devices | |
| CN108536822A (en) | Data migration method, device, system and storage medium | |
| CN101777002B (en) | Software running method based on virtualization | |
| CN113272785B (en) | Method for mounting file system, terminal equipment and storage medium | |
| US8205217B2 (en) | Methods and systems for configuring a specific-use computing system limited to executing predetermined and pre-approved application programs | |
| EP3891640B1 (en) | Systems and methods for controlling access to information stored in an information retention system | |
| US11288361B1 (en) | Systems and methods for restoring applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190416 Address after: 311200 Hongxing Road, Xiaoshan economic and Technological Development Zone, Hangzhou, Zhejiang 389 Patentee after: Zhejiang Desktop Cloud Network Technology Co., Ltd. Address before: 311200 Xinyi Plaza, Began Street, Xiaoshan District, Hangzhou City, Zhejiang Province, 27th floor Patentee before: Zhejiang Yun Chao Science and Technology Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20201112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |