CN104503702B - A kind of method that equipment safety is formatted - Google Patents
A kind of method that equipment safety is formatted Download PDFInfo
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- CN104503702B CN104503702B CN201410769292.5A CN201410769292A CN104503702B CN 104503702 B CN104503702 B CN 104503702B CN 201410769292 A CN201410769292 A CN 201410769292A CN 104503702 B CN104503702 B CN 104503702B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
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Abstract
The invention discloses a kind of method that equipment safety is formatted, including：Obtain format type；Main thread opens the first sub-line journey and the second sub-line journey；First sub-line journey reads the application list, obtains the store path of subfile in the application list；Second sub-line journey judges whether mnemonic, if there is mnemonic, then obtains the store path of subfile in mnemonic；Instruction according to format type is formatted according to the store path of subfile in the store path and mnemonic of subfile in the application list.Formatting procedure relates only to ccf layer, it is not necessary to which system is restarted, and realizes the thorough formatting to user data, prevents privacy of user from revealing.In the case where not restarting system, not influenceing the normal use of equipment, safe format is carried out to equipment, can not the mounted application program of sweep equipment, system program still runs, the problems such as do not result in omission incoming call.
Description
Technical field
The present invention relates to field of information security technology, the method that more particularly to a kind of equipment safety is formatted.
Background technology
With the fast development of smart mobile phone, the function of smart mobile phone is become stronger day by day, using also more and more extensively, not only
As very important communication tool, due also to installing the various application software for being easy to live, learn, work and entertain, make
It turns into the part that it is essential that people live.But with it is convenient while, thing followed mobile phone safe problem also day
Benefit is prominent, and substantial amounts of individual subscriber privacy information is store on mobile phone, therefore, for individual subscriber privacy information and secret papers
Protection be also increasingly taken seriously.
Android system (mobile phone operating system that Google companies release) carries out lattice to what is stored in equipment with book data
Formula process is：Memory.java from android system level application Setting in deviceinfo bags sends to system
Order ExternalStorageFormatter.FORMAT_AND_FACTORY_RESET, then judges initializeMbr letters
Several initial works：Android system format SD card (Secure Digital Memory Card, safe digital card,
A kind of memory device based on semiconductor fast-flash memory device) when, SD card is first determined whether with the presence or absence of subregion, if SD card is not
There is subregion, then need to reinitialize MBR regions, wherein MBR is the abbreviation of Master Boot Record, the i.e. master of hard disk
Leader record.MBR is to be not belonging to any one operating system, can not be read with the disk commands of operating system offer
It, but can change and rewrite by ordering.Afterwards again by initializeMbr and Fat::Format functions rebuild MBR,
Then factory reset is turned back on.After receiving Android command formats, start restarting for android system
(recovery) pattern, the file pointer of original file system is deleted, and rebuilds file system, then by system image weight
New writing system, completes initialization system.
In formatting procedure, the file of user data simply deletes file pointer not by real deletion, because
User data is not processed and deleted in this whole process, these user data are still present in mobile phone.If mobile phone
Even if loss can be formatted by teleinstruction, but due to formatting not thoroughly, personal data are easy to be resumed,
Privacy leakage is caused, if being recovered and being used that by people's malice very detrimental effect can be produced to user.
The content of the invention
In order to solve there is formatting not thoroughly in existing formatting procedure, the technology for easily causing user data leakage is asked
Topic, the invention provides a kind of method that equipment safety is formatted, including：
Obtain format type；
Main thread opens the first sub-line journey and the second sub-line journey；
The first sub-line journey reads the application list, obtains the storage road of subfile in described the application list
Footpath；
The second sub-line journey judges whether mnemonic, if there is the mnemonic, then obtains institute
State the store path of subfile in mnemonic；
The store path and institute of instruction according to the format type according to subfile in described the application list
The store path for stating subfile in mnemonic is formatted.
Optionally, the format type is including only format of user dataization and formats completely, wherein the only user
Data form refers to not delete application program, only deletes the user data in application program, and described formatting completely refers to right
User data in application program and application program is all deleted.
Optionally, obtain after format type, before main thread opens the first sub-line journey and the second sub-line journey, also wrap
Include：
Wake up sign is set and is initialized, the mark that wakes up is for the work to the first sub-line journey and the second sub-line journey
It is marked as state.
Optionally, when the second sub-line journey judges whether mnemonic, if there is no the memory storage
Device, then the second sub-line journey terminate.
Optionally, the first sub-line journey reads the application list, obtain in described the application list file with
And the store path of subfile includes in the file：
The first sub-line journey is passed through by the packet information of all application programs in packet manager acquisition equipment
The store path that the packet information of the application program obtains all application programs constitutes the application list；
The absolute path of application data bag is obtained, and each application program is used for a data space specified
The storage user data corresponding with the application program.
Optionally, the instruction according to the format type according to subfile in described the application list storage
Path be formatted including：
Whether the first sub-line journey judges also include file in the subfile in described the application list one by one,
If comprising file, continuing to judge next subfile according to the store path；
If not including file, the subfile is formatted；
Format complete after judge the subfile whether belong to described the application list in last Ziwen
Whether part, if not last subfile, then point to pointer next subfile and continue to judge the Ziwen comprising text
Part is pressed from both sides；If last subfile, then it is updated to waking up mark.
Optionally, the instruction according to the format type according to subfile in the mnemonic storage road
Footpath be formatted including：
Whether the second sub-line journey judges also include file in the subfile in described the application list one by one,
If comprising file, continuing to judge next subfile according to the store path；
If not including file, the subfile is formatted；
Format complete after judge the subfile whether belong to the mnemonic in last subfile,
If not last subfile, then pointer is pointed into next subfile and continue to judge the Ziwen whether comprising file
Folder；If last subfile, then it is updated to waking up mark.
Optionally, the subfile is formatted and is specifically included：
If the format type is only format of user data, directly reads the subfile and obtain the son
The size of file, the subfile to storing user data in the application program carries out overriding deletion；
If the format type to format completely, the subfile to storing user data in the application program
And the source file of the application program installation kit carries out overriding deletion.
Optionally, when carrying out overriding deletion, deleted using files classes source file pointer.
Optionally, initialization is re-started to the wake-up mark if the wake-up mark reaches preset value.
The method of the device format that the present invention is provided, user can voluntarily select the two kinds of format types, one kind to be
Full format, another kind is only format of user data, is used existing using a system-level management application program that formats
The space of user data is formatted, and user data thoroughly can be formatted, and is not only to delete pointer, and other people are not
The user data deleted may be recovered.In system without restarting, while right in the case of not influenceing the normal use of equipment
Equipment carries out safe format, and formatting system speed far faster than traditional formatting method.Formatting procedure is only related to
And to ccf layer, it is not necessary to system is restarted, while can not mounted application program on sweep equipment.Simultaneously in lattice
System program during formula in equipment still runs, and does not result in the problems such as omitting incoming call.
Brief description of the drawings
Fig. 1 for the present invention provides a kind of equipment safety formatting method the step of flow chart；
Fig. 2 is flow chart the step of the first sub-lines of step S5 journey of the present invention is formatted；
Fig. 3 is flow chart the step of the second sub-lines of step S5 journey of the present invention is formatted；
Fig. 4 is the schematic flow sheet that the embodiment of the present invention is formatted process to Android device；
Fig. 5 for the embodiment of the present invention cover the schematic flow sheet of deletion process.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
The invention provides a kind of method that equipment safety is formatted, flow chart of steps is as shown in figure 1, including following step
Suddenly：
Step S1, acquisition format type.
Step S2, main thread open the first sub-line journey and the second sub-line journey.
Step S3, the first sub-line journey read the application list, obtain the store path of subfile in the application list.
Step S4, the second sub-line journey judge whether mnemonic, if there is mnemonic, then obtain memory
The store path of subfile in memory.
Step S5, store path and memory according to the instruction of format type according to subfile in the application list
The store path of subfile is formatted in memory.
Optionally, format type is including only format of user dataization and formats completely, wherein only format of user data
Change refers to not delete application program, only deletes the user data in application program, format completely refer to application program and
User data in application program is all deleted.
Optionally, after step S1 obtains format type, step S2 main threads open the first sub-line journey and the second sub-line
Before journey, also include：
Wake up sign is set and is initialized, wake up mark for the work shape to the first sub-line journey and the second sub-line journey
State is marked.
Optionally, when the second sub-line journey judges whether mnemonic in step S4, if there is no memory storage
Device, then the second sub-line journey terminate.
Optionally, the first sub-line journey reads the application list in step S3, obtain in the application list file with
And the store path of subfile includes in file：
The packet information that first sub-line journey passes through all application programs in packet manager acquisition equipment, by application
The store path that the packet information of program obtains all application programs constitutes the application list；
The absolute path of application data bag is obtained, and each application program is used for a data space specified
The storage user data corresponding with application program.
Optionally, step S5 enters according to the instruction of format type according to the store path of subfile in the application list
The step of formatting lines, flow chart was as shown in Fig. 2 comprise the following steps：
Whether step S51, the first sub-line journey judge also include file in the subfile in the application list one by one,
If comprising file, continuing to judge next subfile according to store path；
If step S52, do not include file, subfile is formatted；
Step S53, format complete after judge subfile whether belong to the application list in last Ziwen
Whether part, if not last subfile, then point to pointer next subfile and continue to judge Ziwen comprising file；
If last subfile, then it is updated to waking up mark.
Optionally, step S5 is carried out according to the instruction of format type according to the store path of subfile in mnemonic
The step of formatting, flow chart was as shown in figure 3, comprise the following steps：
Whether step S54, the second sub-line journey judge also include file in the subfile in the application list one by one,
If comprising file, continuing to judge next subfile according to store path；
If step S55, do not include file, subfile is formatted；
Step S56, format complete after judge subfile whether belong to mnemonic in last subfile,
If not last subfile, then pointer is pointed into next subfile and continue to judge Ziwen whether comprising file；Such as
Fruit is last subfile, then be updated to waking up mark.
Optionally, subfile is formatted and is specifically included：
If format type is only format of user data, directly reads subfile and obtain the size of subfile,
Subfile to storing user data in application program carries out overriding deletion；
If format type to format completely, subfile and application to storing user data in application program
The source file of program installation kit carries out overriding deletion.
Optionally, when carrying out overriding deletion, deleted using files classes source file pointer.
Optionally, judge waking up mark after step S3 and step S6, if waking up mark and reaching preset value
Initialization is re-started to waking up mark.
The method of the device format that the present invention is provided, user can voluntarily select the two kinds of format types, one kind to be
Full format, another kind is only format of user data, is used existing using a system-level management application program that formats
The space of user data is formatted, and user data thoroughly can be formatted, and is not only to delete pointer, and other people are not
The user data deleted may be recovered.In system without restarting, while right in the case of not influenceing the normal use of equipment
Equipment carries out safe format, and formatting system speed far faster than traditional formatting method.Formatting procedure is only related to
And to ccf layer, it is not necessary to system is restarted, while can not mounted application program on sweep equipment.Simultaneously in lattice
System program during formula in equipment still runs, and does not result in the problems such as omitting incoming call.
Needed in existing Android phone formatting procedure restarting equipment enter recovery patterns, initialization system,
Can not in system operation direct formatting, formatting procedure is time-consuming very long.All information of system will all be deleted,
Including the application that user downloads, and some basic setups that cell phone system is carried out will be all reset.
The Android device safe format method that the present invention is provided needs to be completed in Android application frameworks layer, can
Solve above-mentioned technical problem, below to the Android device in the present invention by taking Android phone conventional at present as an example to above-mentioned
Method is illustrated：
Step S101, user input format order, whether in order to format completely, (deleting should to judge the formatting command
With program and user data), while initialized static variable Mode, NotiCode=0.Wherein Mode is the form for preserving user
Change type, NotiCode is a wake up sign, it is next to carry out in order to wake up main thread after the completion of sub- thread work
Step.
After step S102, initialization data, two sub- threads are opened by main thread and formats different data spaces simultaneously.
Sub-line journey 1 is responsible for the personal data in formatted user application program, and thread 2 is responsible for formatting the personal data in SD card.
Step S103, thread 1 first pass through the letter that PackageManager obtains the mounted all application package of mobile phone
Breath, the bag name for then drawing all programs by PackageInfo is stored in ArrayList<string>In userPac, and initially
Change local variable i=0.
Step S104, thread 1 obtain application program userPac [i] data space file absolute path, and by its
Send function Erase () to.Because all application programs in android system, will an internal data space that specified
To store its related data, or there is external storage (SD card), be purged internal storage data space by thread 1,
Thread 2 removes exterior space.
The implementation procedure of step S105, Erase function includes：All subfiles (including the text under the catalogue is listed first
Part is pressed from both sides), then judge whether i-th subfile is file.If it is the path of this file is again passed to Erase letters
Number repeats this process.If not overriding deletion action is then carried out, after the completion of deletion is override, judge whether the subfile is this
Last file under catalogue, if not next subfile is then pointed to, repeats the work since the last time judges, such as
Fruit is to be returned to true.
After step S106, thread 1 receive the return value true that Erase functions are arrived, make global variable NotiCode++, profit
Main thread is waken up with the value of NotiCode carries out next step.
Step S107, thread 2：When thread is activated, determine whether there is SD card, terminate if there is no thread, such as
There is SD card in fruit, next obtain the absolute path of SD card.
Step S108, thread 2 send the absolute path of SD card to function Erase (), equally list the institute under the catalogue
There is subfile (including file), then judge whether i-th subfile is file.If just by the path of this file
It is again passed to Erase and repeats this process.If not overriding deletion action is just carried out, after the completion of deletion is override, this article is judged
Whether part is last file under the catalogue, if not will point to next file, is repeated since the last time judges
Work, if being returned to true.
After thread 2 receives Erase return value true, make NotiCode++ so that ring marker reaches preset value 2.
Step S109, when main thread receives the result of NotiCode==2, wake up main thread, carried out down by main thread
One step.Judge formatting patterns, if need to format application program (i.e. whether format type is to format completely),
If result is no, EP (end of program) points out User Format process to complete.If result is true, using File delete source file/
The apk of all application programs under data/app, then host process terminate.Now using File because now in application program
There is no user data, as state when just installation from internet.So just only need to delete the finger of its file
Pin can just meet requirement, it is not necessary that go to take longer time covering deletion, can thus save the time to offer
One more preferable Consumer's Experience, accelerates to format speed.
Step 110, overriding deletion action：Since it is desired that the storage element where direct operation file, first by
RandomAccessFile reads file, then obtains file size and stores.Local variable i=0 is defined,
RandomAccessFile in the i-th 1024~(i+1) * of * 1024Bytes of source file to writing nonsignificant data.Using so
Mode write the purpose of data and be able to directly cover the position of source file, but reduce simultaneously and delay in mobile phone fortune is deposited
The insignificant data deposited.It is only 1024Bytes that this mode causes that the nonsignificant data in running space is consumed, while can
Can be operated with the file for ensureing super large.
Step S111, judge file size whether more than (i+1) * 1024Bytes.If it is, supporting paper is without complete
It is capped now to perform i=i+1 repeat step S110-111, until judged result is no.If result is no, file is complete
It is complete capped, perform next step.
Step S112, source file is deleted using File classes, due to pointed to source file during above-mentioned two
Holder physical address inserts nonsignificant data, can directly be deleted, and now deleting pointer can ensure that source file will not be by
Recover.The physical address even is pointed to one file of adaptation, now the data of physical address have been insignificant data,
Cannot be resumed.
The schematic flow sheet of process is formatted to Android device for above-mentioned steps S101-S109 as shown in figure 4, step
The schematic flow sheet that rapid S110-S112 cover deletion process is as shown in Figure 5.
Heretofore, user data is deeply formatted completely.This process relates only to Android
Framework (i.e. ccf layer), it is not necessary to restart to system, while deleting user according to user's selection downloads answering for installation
Use program.The system program of mobile phone still runs in this process simultaneously, does not result in the problems such as omitting incoming call.
In sum, on the one hand the equipment safety formatting method that the present invention is provided allows the user being capable of fast and safely form
Change system, while not deleting the application program of user, is thoroughly crushed to application program data file, is formatted entirely
Not restarting equipment in journey.Retain setting of the user to mobile phone simultaneously, it is intended to provide the user with a kind of safer, fast-crushing system
A kind of method of all personal data in system.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (9)
1. a kind of method that equipment safety is formatted, it is characterised in that including：
Obtain format type；
Main thread opens the first sub-line journey and the second sub-line journey；
The first sub-line journey reads the application list, obtains the store path of subfile in described the application list；
The second sub-line journey judges whether mnemonic, if there is the mnemonic, then obtains the note
Recall the store path of subfile in memory；
Instruction according to the format type according to subfile in described the application list store path and the note
The store path for recalling subfile in memory is formatted；
The format type includes only format of user dataization and formats completely, wherein the only format of user data is
Finger does not delete application program, only deletes the user data in application program, it is described format completely refer to application program and
User data in application program is all deleted.
2. method according to claim 1, it is characterised in that obtain after format type, main thread opens the first son
Before thread and the second sub-line journey, also include：
Set wake-up to mark and initialized, the mark that wakes up is for the work shape to the first sub-line journey and the second sub-line journey
State is marked.
3. method according to claim 1, it is characterised in that the second sub-line journey judges whether mnemonic
When, if there is no the mnemonic, then the second sub-line journey terminates.
4. method according to claim 1, it is characterised in that the first sub-line journey reads the application list, obtains
The store path of subfile includes in file and the file in described the application list：
The packet information that the first sub-line journey passes through all application programs in packet manager acquisition equipment, by described
The store path that the packet information of application program obtains all application programs constitutes the application list；
The absolute path of application data bag is obtained, and each application program has a data space specified for storing
The user data corresponding with the application program.
5. method according to claim 2, it is characterised in that the instruction according to the format type is according to described
In the application list the store path of subfile be formatted including：
Whether the first sub-line journey judges also include file in the subfile in described the application list one by one, if
Comprising file, then continue to judge next subfile according to the store path；
If not including file, the subfile is formatted；
Format complete after judge the subfile whether belong to described the application list in last subfile, such as
Whether fruit is not last subfile, then pointer is pointed into next subfile and continue to judge the subfile comprising file
Folder；If last subfile, then the wake-up mark is updated.
6. method according to claim 2, it is characterised in that the instruction according to the format type is according to described
In mnemonic the store path of subfile be formatted including：
Whether the second sub-line journey judges also include file in the subfile in the mnemonic one by one, if bag
Containing file, then continue to judge next subfile according to the store path；
If not including file, the subfile is formatted；
Format complete after judge the subfile whether belong to the mnemonic in last subfile, if
Whether it is not last subfile, then pointer is pointed into next subfile and continue to judge the subfile comprising file；
If last subfile, then the wake-up mark is updated.
7. the method according to claim 5 or 6, it is characterised in that be formatted to the subfile and specifically included：
If the format type is only format of user data, directly reads the subfile and obtain the subfile
Size, in the application program store user data subfile carry out overriding deletion；
If the format type to format completely, to stored in the application program user data subfile and
The source file of the application program installation kit carries out overriding deletion.
8. method according to claim 7, it is characterised in that when carrying out overriding and deleting, using files classes source file pointer
Deleted.
9. the method according to claim 5 or 6, it is characterised in that to institute if the wake-up mark reaches preset value
State wake-up mark and re-start initialization.
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| CN201410769292.5A CN104503702B (en) | 2014-12-12 | 2014-12-12 | A kind of method that equipment safety is formatted |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101763317A (en) * | 2009-12-31 | 2010-06-30 | 中国软件与技术服务股份有限公司 | Data eliminating method of magnetic medium |
| CN103699420A (en) * | 2013-12-31 | 2014-04-02 | 海信集团有限公司 | System recovery method and system recovery device |
| CN103905649A (en) * | 2014-04-16 | 2014-07-02 | 北京联合大学 | Mobile phone anti-theft system based on Bluetooth technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7761284B2 (en) * | 2004-08-30 | 2010-07-20 | Overland Storage, Inc. | Tape emulating disk based storage system and method with automatically resized emulated tape capacity |
| US20140201485A1 (en) * | 2013-01-14 | 2014-07-17 | Commvault Systems, Inc. | Pst file archiving |
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2014
- 2014-12-12 CN CN201410769292.5A patent/CN104503702B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763317A (en) * | 2009-12-31 | 2010-06-30 | 中国软件与技术服务股份有限公司 | Data eliminating method of magnetic medium |
| CN103699420A (en) * | 2013-12-31 | 2014-04-02 | 海信集团有限公司 | System recovery method and system recovery device |
| CN103905649A (en) * | 2014-04-16 | 2014-07-02 | 北京联合大学 | Mobile phone anti-theft system based on Bluetooth technology |
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