CN102750202A - Data protection method and device - Google Patents
Data protection method and device Download PDFInfo
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- CN102750202A CN102750202A CN2012101846460A CN201210184646A CN102750202A CN 102750202 A CN102750202 A CN 102750202A CN 2012101846460 A CN2012101846460 A CN 2012101846460A CN 201210184646 A CN201210184646 A CN 201210184646A CN 102750202 A CN102750202 A CN 102750202A
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Abstract
The invention relates to a data protection method. The data protection method includes detecting internal storage write operation of an application program and subjecting memory mapping data to persistence storage into a preset memory area according to the internal storage write operation when the internal storage write operation is detected. Besides, the invention further provides a data protection device. The data protection method and the device are capable of improving the safety of data.
Description
Technical field
The present invention relates to the operation system technology field, particularly relate to a kind of data guard method and device.
Background technology
In the conventional art, intelligent terminal drives by corresponding operating system.For example, PC can be driven by operating systems such as windows, linux, and portable terminal can be driven by operating systems such as ios, android.Operating system is the bridge between upper layer application and the bottom, and application software all works on the platform that operating system provides.
The user is with before the intelligent terminal shutdown, if the application program of moving is still arranged, then operating system prompting user withdraws from shutdown after this application's data is preserved again, thereby prevents because the data loss that shutdown causes.
Yet; In the conventional art, as user during at the operative intelligence terminal, if meet with disaster events such as sudden power, system crash; Because operating system was out of service or can not normally move when disaster took place; Therefore operating system can't be preserved the application's data of normally not closing, and makes user's significant data to lose, thereby makes data security lower.
Summary of the invention
Based on this, be necessary to provide a kind of data guard method that can improve data security.
A kind of data guard method comprises:
Detect the internal memory write operation of application program;
When detecting said internal memory write operation and take place, according to the memory-mapped data of the said application program of said internal memory write operation persistent storage to preset storage area.
Among embodiment, said method also comprises therein:
Obtain the request that is provided with that detects;
Obtain with said detection request corresponding application program sign and buffer memory are set;
Also comprise before the step of the internal memory write operation of said detection application program:
Judge whether comprise in the said buffer memory and said application program corresponding application program sign, if then the step of the internal memory write operation of said detection application program is carried out in continuation.
Among embodiment, said method also comprises therein:
When os starting and/or during said application program launching, judge whether there are the memory-mapped data corresponding in the said storage area with said application program; If then whether prompting loads said memory-mapped data.
Among embodiment, said method also comprises therein:
Obtain the operation of memory-mapped data decimation, obtain the memory-mapped data according to said memory-mapped data decimation operation;
Obtain said memory-mapped data corresponding application program;
Start said application program and load said memory-mapped data;
When said application program normally withdraws from, remove the memory-mapped data corresponding with said application program.
Therein among embodiment, said memory-mapped data according to the said application program of said internal memory write operation persistent storage to the step of preset storage area are:
The internal memory write operation persistent storage that operation produces according to user I/O arrives preset storage area with the corresponding memory-mapped data of said user I/O operation.
In addition, also be necessary to provide a kind of data protecting device that can improve data security.
A kind of data protecting device comprises:
The internal memory detection module is used to detect the internal memory write operation of application program;
The persistent storage module is used for when detecting said internal memory write operation and take place, according to the memory-mapped data of the said application program of said internal memory write operation persistent storage to preset storage area.
Therein among embodiment, said device also comprises detecting module is set, and is used to obtain detect request is set, and obtains with said detection request corresponding application program sign and buffer memory are set; Said internal memory detection module also is used for when said buffer memory comprises with said application program corresponding application program sign, detecting the internal memory write operation of said application program.。
Among embodiment, said device also comprises the start-up loading module therein, is used for when os starting and/or during said application program launching, judges whether there are the memory-mapped data corresponding with said application program in the said storage area; If then whether prompting loads said memory-mapped data.
Among embodiment, said device also comprises memory-mapped data load module therein, is used to obtain the operation of memory-mapped data decimation, obtains the memory-mapped data according to said memory-mapped data decimation operation; Obtain said memory-mapped data corresponding application program; Start said application program and load said memory-mapped data;
Said device comprises that also the memory-mapped data remove module, is used for when said application program normally withdraws from, and removes the memory-mapped data corresponding with said application program.
Among embodiment, said persistent storage module also is used for the internal memory write operation persistent storage that operation produces according to user I/O and arrives the storage area of presetting with the corresponding memory-mapped data of said user I/O operation therein.
Above-mentioned data protecting device is when detecting the internal memory write operation; The memory-mapped data of automatic persistent storage application program; Promptly, the corresponding memory information of application program can preserve the operation scene and the user data of application program automatically when changing; Even make that its corresponding user data can access the preservation of persistence, when moving this application program next time when causing because of sudden power or other reasons that this application program is improper to be withdrawed from; The running status of the memory-mapped data that can load persistent storage automatically to reduce before improper the withdrawing from, thus data security improved.
Description of drawings
Fig. 1 is the process flow diagram of data guard method among the embodiment;
Fig. 2 is the structural drawing of data protecting device among the embodiment;
Fig. 3 is the structural drawing of data protecting device among another embodiment.
Embodiment
In one embodiment, as shown in Figure 1, a kind of data guard method may further comprise the steps:
Step S102, the internal memory write operation of detection application program.
The internal memory write operation is the operation that the user imports through application program.For example, the user can obtain the user through keyboard and key in operation when Edit Document, and internally deposits into capable write operation according to this key entry operation, in internal memory, generates character string according to write operation.The literal of user's input then is recorded in the internal memory through the internal memory write operation.
Step S104, when detecting the internal memory write operation and take place, according to the memory-mapped data of internal memory write operation persistent storage application program to preset storage area.
Persistent storage is about to data storage in disk, flash memory or database.Data in the internal memory can't be preserved after the internal memory outage.The data of persistent storage in storage mediums such as disk, flash memory can still obtain preserving after outage.
The data of storing in the promptly corresponding region of memory of memory-mapped data with this application program.
In one embodiment, the storage area of presetting comprises one or more in disk, tape, read-only memory (ROM, Read-Only Memory) flash memory, the remote server.
For example, storage area can be a file preset on local disk or the tape, also can be that external SD card (Secure Digital Memory Card, a kind of flash card) is gone up file, can also be the table space in the database on the Cloud Server.The position of preset storage area can be recorded in registration table or the configuration file.
For the less portable terminal of self storage space, the memory-mapped data persistence is stored on external flash memory or the remote server, can save the storage space of portable terminal greatly.
In one embodiment; Can be specially according to the memory-mapped data of internal memory write operation persistent storage application program step to preset storage area: obtain the increment content of internal memory write operation, with the memory-mapped data of the mode persistent storage application program of increment to preset storage area.
After the application program launching, its process has occupied the region of memory of being delimited by operating system in internal memory.This region of memory comprises system data area and user data area, is respectively applied for the system data and the user data of this application program of storage.When the user data input forms the internal memory write operation, then user data is added in the user data area.This user data is the incremental data of this internal memory write operation.Mode that can increment is added on this incremental data in the memory-mapped data of having stored.
In one embodiment, can be specially according to the memory-mapped data of the internal memory write operation persistent storage application program step to preset storage area: the internal memory write operation persistent storage that operation produces according to the user I/O memory-mapped data corresponding with user I/O operation arrive the storage area of presetting.
Further, mode persistent storage that can increment memory-mapped data corresponding with user I/O operation are to the storage area of presetting.
User I/O operation is inputing or outputing of when running application, carrying out of user.After the application program launching, its process has occupied the region of memory of being delimited by operating system in internal memory.This region of memory comprises system data area and user data area, the data that system data area writes when being used to store this application program self-operating; User data area is used to store the user data that user I/O operation writes.
For example, if application program is the documents editing application in the android system, can obtain the character of input through the data stream of system.in, the data stream of system.in is user I/O; If application program is the instant messaging program, then can set up data stream receiving remote data and be written in the internal memory through socket, the data stream of setting up through socket is user I/O operation.
The memory-mapped data of the internal memory write operation application programs that operation produces according to user I/O are carried out persistent storage; The internal memory write operation that can avoid self producing when moving according to application program carries out persistence; Thereby reduced persistent storage operation to unnecessary data; Reduce non-essential loss, improved operational efficiency.
Further, the data type of the memory-mapped data corresponding with user I/O operation can be a text, binary stream, instruction.For example, the data in the user I/O operation write memory can be the data stream, documents editing instruction etc. of binary encrypted communication of content, the reception of note or document.
In the present embodiment, can be in the I/O of bottom interface the static document flow of predefine.Behind the internal memory write operation that gets access to user I/O operation generation, can store the memory-mapped data persistence that this user I/O operation produces into preset storage area through this static document flow.
In one embodiment, also can be when os starting and/or during application program launching, judge whether there are the memory-mapped data corresponding in the storage area with application program; If then whether prompting loads the memory-mapped data.
In the present embodiment; When application program launching, can from registration table or configuration file, obtain the position of this storage area earlier, detect whether there are the memory-mapped data corresponding in this storage area then with this application program; If exist, then point out the user to select whether to load these memory-mapped data; Otherwise, normally start this application program.
If after prompting, get access to the affirmation information of user's input, then can read this memory-mapped data, and these memory-mapped data are added in the region of memory corresponding with this application program, concrete, can add in the user data area.After adding successfully, removable these memory-mapped data.
For example, sudden power when using the short message application editing short message as if the user, the content of edit before the outage can be used as the memory-mapped data persistence and is stored in the SD card.When the user moved short message application once more, earlier whether the prompting user loaded memory-mapped data corresponding in the SD card, if to have selected be then to load these memory-mapped data appointed positions in the internal memory to the user; Otherwise, normally start this short message application.
In the present embodiment, when os starting, can judge whether there are the memory-mapped data in the storage area; If then whether prompting loads the memory-mapped data.
In one embodiment, also can obtain the operation of memory-mapped data decimation, the memory-mapped data are obtained in operation according to the memory-mapped data decimation; Obtain memory-mapped data corresponding application program; Start application program and load the memory-mapped data.When application program normally withdraws from, remove the memory-mapped data corresponding with application program.
If application program normally withdraws from, then represent the be operating as normal running of user to this application program, data processing is normal.Remove the memory-mapped data corresponding with application program this moment, and repeating in the time of can preventing next time to rerun this application program reminded.
In one embodiment, also can obtain detection request is set, obtain with detection request corresponding application program sign and buffer memory are set.
In the present embodiment, before the step of the internal memory write operation that detects application program, also can judge whether comprise in the buffer memory and application program corresponding application program sign, if then continue the step that execution detects the internal memory write operation of application program.
Only the internal memory write operation that the application program of asking setting is set through detection is detected; Can only carry out real-time guard to important application's data; Thereby save storage space further, also reduced the number of times of I/O operation simultaneously, thereby reduced the loss of computational resource.
In one embodiment, as shown in Figure 2, a kind of data protecting device comprises internal memory detection module 102, persistent storage module 104, wherein:
Internal memory detection module 102 is used to detect the internal memory write operation of application program.
The internal memory write operation is the operation that the user imports through application program.For example, the user can obtain the user through keyboard and key in operation when Edit Document, and internally deposits into capable write operation according to this key entry operation, in internal memory, generates character string according to write operation.The literal of user's input then is recorded in the internal memory through the internal memory write operation.
Persistent storage is about to data storage in disk, flash memory or database.Data in the internal memory can't be preserved after the internal memory outage.The data of persistent storage in storage mediums such as disk, flash memory can still obtain preserving after outage.
The data of storing in the promptly corresponding region of memory of memory-mapped data with this application program.
In one embodiment, the storage area of presetting comprises one or more in disk, tape, read-only memory (ROM, Read-Only Memory) flash memory, the remote server.
For example, storage area can be a file preset on local disk or the tape, also can be that external SD card (Secure Digital Memory Card, a kind of flash card) is gone up file, can also be the table space in the database on the Cloud Server.The position of preset storage area can be recorded in registration table or the configuration file.
For the less portable terminal of self storage space, the memory-mapped data persistence is stored on external flash memory or the remote server, can save the storage space of portable terminal greatly.
In one embodiment, persistent storage module 104 can be used for obtaining the increment content of internal memory write operation, with the memory-mapped data of the mode persistent storage application program of increment to preset storage area.
After the application program launching, its process has occupied the region of memory of being delimited by operating system in internal memory.This region of memory comprises system data area and user data area, is respectively applied for the system data and the user data of this application program of storage.When the user data input forms the internal memory write operation, then user data is added in the user data area.This user data is the incremental data of this internal memory write operation.Persistent storage module 104 can be used for the mode of increment this incremental data being added in the memory-mapped data of having stored
In one embodiment, persistent storage module 104 can be used for arriving preset storage area according to the internal memory write operation persistent storage of the user I/O operation generation memory-mapped data corresponding with user I/O operation.
Further, mode persistent storage that can increment memory-mapped data corresponding with user I/O operation are to the storage area of presetting.
User I/O operation is inputing or outputing of when running application, carrying out of user.After the application program launching, its process has occupied the region of memory of being delimited by operating system in internal memory.This region of memory comprises system data area and user data area, the data that system data area writes when being used to store this application program self-operating; User data area is used to store the user data that user I/O operation writes.
For example, if application program is the documents editing application in the android system, persistent storage module 104 can be used for obtaining through the data stream of system.in the character of input, and the data stream of system.in is user I/O; If application program is the instant messaging program, then persistent storage module 104 can be used for setting up data stream receiving remote data and being written in the internal memory through socket, and the data stream of setting up through socket is user I/O operation.
The memory-mapped data of the internal memory write operation application programs that operation produces according to user I/O are carried out persistent storage; The internal memory write operation that can avoid self producing when moving according to application program carries out persistence; Thereby reduced persistent storage operation to unnecessary data; Reduce non-essential loss, improved operational efficiency.
Further, the data type of the memory-mapped data corresponding with user I/O operation can be a text, binary stream, instruction.For example, the data in the user I/O operation write memory can be the data stream, documents editing instruction etc. of binary encrypted communication of content, the reception of note or document.
In the present embodiment, can be in the I/O of bottom interface the static document flow of predefine.Persistent storage module 104 be used in get access to internal memory write operation that user I/O operation produces after, store the memory-mapped data persistence that this user I/O operation produces into preset storage area through this static document flow.
In one embodiment, as shown in Figure 3, data protecting device also comprises start-up loading module 106, when being used in os starting and/or during application program launching, judges whether there are the memory-mapped data corresponding with application program in the storage area; If then whether prompting loads the memory-mapped data.
In the present embodiment; When application program launching; Start-up loading module 106 can be used for elder generation obtains this storage area from registration table or configuration file position; Detect whether there are the memory-mapped data corresponding in this storage area then,, then point out the user to select whether to load these memory-mapped data if exist with this application program; Otherwise, normally start this application program.
If after prompting, get access to the affirmation information of user's input, then start-up loading module 106 can be used for reading this memory-mapped data, and these memory-mapped data are added in the region of memory corresponding with this application program, and is concrete, can add in the user data area.After adding successfully, removable these memory-mapped data.
For example, sudden power when using the short message application editing short message as if the user, the content of edit before the outage can be used as the memory-mapped data persistence and is stored in the SD card.When the user moved short message application once more, application start load-on module 106 can be used for earlier whether the prompting user loads memory-mapped data corresponding in the SD card, if to have selected be then to load these memory-mapped data appointed positions in the internal memory to the user; Otherwise, normally start this short message application.
In the present embodiment, when start-up loading module 106 also is used in os starting, judge whether there are the memory-mapped data in this storage area; If then whether prompting loads the memory-mapped data.
In one embodiment; As shown in Figure 3; Data protecting device also comprises memory-mapped data load module 108, can be used for obtaining the operation of memory-mapped data decimation, and the memory-mapped data are obtained in operation according to the memory-mapped data decimation; Obtain memory-mapped data corresponding application program, start application program and load the memory-mapped data.
In one embodiment, as shown in Figure 3, data protecting device comprises that also the memory-mapped data remove module 110, when being used in application program and normally withdrawing from, removes the memory-mapped data corresponding with application program.
If application program normally withdraws from, then represent the be operating as normal running of user to this application program, data processing is normal.Remove the memory-mapped data corresponding with application program this moment, and repeating in the time of can preventing next time to rerun this application program reminded.
In one embodiment, as shown in Figure 3, data protecting device comprises that also detection is provided with module 112, is used to obtain detect request is set, and obtains with detection request corresponding application program sign and buffer memory are set.
In the present embodiment, internal memory detection module 102 judges whether comprise in the buffer memory and application program corresponding application program sign before also being used in the internal memory write operation that detects application program, if then continuation detects the internal memory write operation of application program.
Only the internal memory write operation that the application program of asking setting is set through detection is detected; Can only carry out real-time guard to important application's data; Thereby save storage space further, also reduced the number of times of I/O operation simultaneously, thereby reduced the loss of computational resource.
Above-mentioned data protecting device is when detecting the internal memory write operation; The memory-mapped data of automatic persistent storage application program; Promptly, the corresponding memory information of application program can preserve the operation scene and the user data of application program automatically when changing; Even make that its corresponding user data can access the preservation of persistence, when moving this application program next time when causing because of sudden power or other reasons that this application program is improper to be withdrawed from; The running status of the memory-mapped data that can load persistent storage automatically to reduce before improper the withdrawing from, thus data security improved.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. data guard method comprises:
Detect the internal memory write operation of application program;
When detecting said internal memory write operation and take place, according to the memory-mapped data of the said application program of said internal memory write operation persistent storage to preset storage area.
2. data guard method according to claim 1 is characterized in that, said method also comprises:
Obtain the request that is provided with that detects;
Obtain with said detection request corresponding application program sign and buffer memory are set;
Also comprise before the step of the internal memory write operation of said detection application program:
Judge whether comprise in the said buffer memory and said application program corresponding application program sign, if then the step of the internal memory write operation of said detection application program is carried out in continuation.
3. data guard method according to claim 1 is characterized in that, said method also comprises:
When os starting and/or during said application program launching, judge whether there are the memory-mapped data corresponding in the said storage area with said application program; If then whether prompting loads said memory-mapped data.
4. according to each described data guard method in the claim 1 to 3, it is characterized in that said method also comprises:
Obtain the operation of memory-mapped data decimation, obtain the memory-mapped data according to said memory-mapped data decimation operation;
Obtain said memory-mapped data corresponding application program;
Start said application program and load said memory-mapped data;
When said application program normally withdraws from, remove the memory-mapped data corresponding with said application program.
5. according to each described data guard method in the claim 1 to 3, it is characterized in that said memory-mapped data according to the said application program of said internal memory write operation persistent storage to the step of preset storage area are:
The internal memory write operation persistent storage that operation produces according to user I/O arrives preset storage area with the corresponding memory-mapped data of said user I/O operation.
6. a data protecting device is characterized in that, comprising:
The internal memory detection module is used to detect the internal memory write operation of application program;
The persistent storage module is used for when detecting said internal memory write operation and take place, according to the memory-mapped data of the said application program of said internal memory write operation persistent storage to preset storage area.
7. data protecting device according to claim 8 is characterized in that, said device comprises that also detection is provided with module, is used to obtain detect request is set, and obtains with said detection request corresponding application program sign and buffer memory are set;
Said internal memory detection module also is used for when said buffer memory comprises with said application program corresponding application program sign, detecting the internal memory write operation of said application program.
8. data protecting device according to claim 6; It is characterized in that; Said device also comprises the start-up loading module, is used for when os starting and/or during said application program launching, judges whether there are the memory-mapped data corresponding with said application program in the said storage area; If then whether prompting loads said memory-mapped data.
9. according to each described data protecting device in the claim 6 to 8; It is characterized in that; Said device also comprises memory-mapped data load module, is used to obtain the operation of memory-mapped data decimation, obtains the memory-mapped data according to said memory-mapped data decimation operation; Obtain said memory-mapped data corresponding application program; Start said application program and load said memory-mapped data;
Said device comprises that also the memory-mapped data remove module, is used for when said application program normally withdraws from, and removes the memory-mapped data corresponding with said application program.
10. according to each described data protecting device in the claim 6 to 8; It is characterized in that said persistent storage module also is used for the internal memory write operation persistent storage that operation produces according to user I/O and arrives preset storage area with the corresponding memory-mapped data of said user I/O operation.
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| CN109656779A (en) * | 2018-12-07 | 2019-04-19 | 广州市百果园信息技术有限公司 | Internal memory monitoring method, device, terminal and storage medium |
| CN112835526A (en) * | 2021-02-08 | 2021-05-25 | 福州大学 | Engineering data persistence storage system and method |
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