CN107770622A - The method and operating method of file in a kind of renewal linux system - Google Patents
The method and operating method of file in a kind of renewal linux system Download PDFInfo
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- CN107770622A CN107770622A CN201711086414.0A CN201711086414A CN107770622A CN 107770622 A CN107770622 A CN 107770622A CN 201711086414 A CN201711086414 A CN 201711086414A CN 107770622 A CN107770622 A CN 107770622A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- General Engineering & Computer Science (AREA)
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a kind of method and operating method for updating file in linux system, it is related to software technology field.The present invention realizes One function interface in main program, the interface is called when the External memory equipments such as USB flash disk, mobile hard disk access TV, the functional interface realizes the function of performing the script in external storage equipment, so that the particular content that renewal is repaired can be specifically designated by external scripts, upgrade logic can also be aided in controlling by its exterior script file.Simplify the code logic design of upgrading more new file.It is convenient compared to the method for current main flow, efficient to update upgrade file.Only need the External memory equipments such as USB flash disk, the mobile hard disk of insert band AKU to can be achieved with automatically updating for file in system, greatly enhance exploitation, production, the efficiency for solving problems after sale.Especially mass disposal problems when, it is with the obvious advantage.
Description
Technical field
Embodiments of the present invention are related to software technology field, more specifically, embodiments of the present invention are related to renewal
The method and operating method of file in linux system.Implement accurately renewal to the file in linux system, can be rapidly and efficiently
Solution because in linux system file error trigger BUG.
Background technology
TV in the market all carries operating system mostly, and operating system significant portion is all linux kernel,
In tv product exploitation, production, after sale etc. in link, we have can be found that a lot because in system caused by file error
BUG.When there are problems in TV, present way be all upgrade main program or difference upgrading by way of come
Solve.The mode of upgrading main program takes long, and difference upgrade logic is complicated, and difference, which packs, to bother.Particularly large quantities of
During such issues that amount processing, efficiency is not high by way of upgrading main program or difference upgrading, even difference upgrades
It can take considerable time, and these methods are required for manual operation to go to upgrade, it is cumbersome.
File in renewal Linux television systems at present, typically by way of upgrading main program or difference upgrading
To realize.Way for upgrading whole main program：First, escalation process is slow, and high-volume machine upgrading main program efficiency is very
It is low；2nd, the way of upgrading main program is risky, and in general tv product system is no double copies, if upgrading main journey
Situations such as being powered off in sequence has the risk for the machine of can't afford to drive.For the way of difference upgrading：Code Design is complicated；High-volume machine
Want difference upgrading less efficient.
The content of the invention
The purpose of the present invention is the tv product exploitation at us, production, after sale etc. in link, there are many problems to be because
In system caused by some file errors, it is only necessary to corresponding file in more new system.Such as：Some configuration file mistake
Cause program run-time error；Some dynamic link library has BUG, causes some functions abnormal；Some APP will update；Start
The material mistake such as Logo, music；Such as：It was found that some deadlock problem is because in system caused by so library file, now
Certain means is only needed to use to update this so library file.The present invention be exactly in order to quickly and efficiently solve problems,
A kind of quick, simple method is provided to update the file in repair system.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：A kind of side for updating linux system part
Method, is included in design One function interface in the main program of the TV based on linux system, and the functional interface is examined in television system
It is called when having measured USB flash disk, having moved the External memory equipment access such as hard, the interface will implement function such as：
A：Judge to access in the External memory equipments such as USB flash disk, the mobile hard disk of TV under the catalogue arranged and whether conform to
The shell scripts asked, the shell script files are the shell scripts in AKU.
B：Judge the legitimacy of script and delete check bit.It is whether correct with checking algorithm verification script check bit, just
It is true then be judged as legal, now delete check bit, continue step C, be otherwise judged as illegal, terminate upgrading.This
In checking algorithm and B1 in checking algorithm be mapped.
C：B is judged after passing through, and decrypts script, script is reduced into normal shell scripts.Here decipherment algorithm is that B1 adds
The inverse process of close algorithm, described in B1.
D：Parse file to be updated, backed up from script.The variable that A1 is specified in parsing script, is obtained
By the path of file to be updated and filename.Using its renaming as backup, renaming, which does not make a mistake, illustrates backup
Success.
E：Assign script attribute-executable.
F：Perform script.System () can be used, the mode such as exec, popen () performs shell scripts.
G:Judge whether script correctly performs, learnt according to the redaction rule of A5 scripts, as long as after judging that script has performed
Exit status values.After if shell scripts have performed, exit status values are $Value for 0 explanation script correctly held
OK；It is $ that if shell scripts, which perform backed off after random state value,Value then represent that performing out process mistake occurs for non-zero state.
H：Judged result in G, show that an information alert frame provides liter if script is executed correctly, on UI
The prompting that level is updated successfully, then restarts TV automatically；If script implementation procedure is there occurs mistake, the text that will be backed up in D
Part is reduced, i.e., the file of renaming in D is changeed back to original filename.
The functional interface realizes the function of performing the shell scripts in external storage equipment, so that renewal is repaired
Particular content and logic can be controlled by its exterior shell script files.
Further technical scheme is：Present invention additionally comprises the AKU for upgrading renewal, AKU includes two parts
Content：Control the shell scripts of wrong file in more new system and the correct file gone in system will be updated to.
Further technical scheme is：Shell scripts are mainly to be write according to the content to be upgraded, its main contents
Mainly it is following some：
A1：Specified the path of the file of renewal to be upgraded and filename with a variable in linux system.So as to D
Middle parsing variable is learnt file to be updated.
A2：With the subregion where path in mount orders again carry A1, make the subregion have it is readable can write permission.
A3：The path that correct file in AKU in the External memory equipments such as USB flash disk, mobile hard disk is copied in A1
Under.
A4：In order to ensure replication actions are correctly completed, the data in internal memory are written to physical store with sync orders and are situated between
It is exactly Flash in general TV in matter.
A5：Each order can all have a command determination after performing in shell scriptsValue, i.e., the order perform
Return value, performed correctly for 0 explanation, otherwise perform failure.Next Command is performed if the correct execution of order, if lost
Lose, perform the execution that exit XXX (XXX is the value of a non-zero) exit shell scripts, it is non-zero state now to exit state.
So design, after if shell scripts have performed, is moved back according to the state value that script exits with regard to that can learn whether script runs success
The value that does well is that 0 explanation script is executed correctly；Perform if backed off after random state value is non-zero state and represent if shell scripts
Perform out process and mistake occur.
Further technical scheme is：By the shell script encryptions in A, verification after and will be updated in system
Correct file is packaged with being made as AKU issue.
B1：In order to prevent script file by falsification and ensure that the source of AKU is correct, the whole shell pin in AKU
Originally to pass through encryption and verification, and first to encrypt and then verify.Verification be in order to prevent file by other people falsifications, encryption be for
Do not want the script file for allowing other people to see plaintext, method of calibration and cipher mode can be with designed, designed.
Method of calibration：As long as can play a part of preventing other people falsification files, these methods can be verified with MD5,
Also can one simple checking algorithm of designed, designed.Such as：Script can be handled with binary file, each BYTE is added
The result arrived is stored in a BYTE, and the value then is appended into end of file.It is also to use same method when so step B verifies
Verification, simply last BYTE, which is not participated in, verifies calculating, and verification contrasts after the completion of calculating with last BYTE, if equally
Then judge to verify successfully.
AES：As long as the effect for obscuring plaintext can be played, other people AES can be used, can also oneself
Design one is simple, such as：Script can be handled with binary file, each BYTE adds 1, and step C decryption method is
The inverse process of AES, such step C are exactly to handle this document with binary system, and each BYTE, which subtracts 1, to be decrypted.
B2：File in AKU is that will be updated to go to replace the correct of wrong file in linux system in system
File, this document is without encryption.
Further technical scheme is：The AKU of issue is obtained by modes such as network downloads, the AKU is placed on U
In the External memory equipments such as disk, mobile hard disk, External memory equipment is then inserted into television USB interface, now can calling function
Interface performs the shell scripts in External memory equipment.If do not made a mistake, the prompting letter that renewal upgrades successfully is had
Breath, then restarts TV；Recover the file backed up in D steps if failure.
Meanwhile the present invention also provides a kind of operating method for updating file in linux system, comprises the following steps：
User obtains AKU；
AKU is put into the External memory equipment with USB interface；
By the USB port on the External memory equipment insertion TV with USB interface；
Wrong file in television system more new system, customer upgrade result is informed by UI prompt messages.
The specific file of reparation to be updated, and the logic of part upgrading are specified in the script being performed.Present invention design
Functional interface realize perform external storage equipment in shell scripts function so that renewal repair it is specific in
Appearance and logic can be controlled by its exterior shell script files, and the code logic design of this mode upgrade file is simple, more
New upgrade file is convenient compared to the method for current main flow, efficient.
The present invention compared with prior art, has following beneficial effect：The present invention realizes a work(in main program
Energy interface, the interface are called when the External memory equipments such as USB flash disk, mobile hard disk access TV, and the functional interface, which realizes, to be held
The function of script in row external storage equipment, so that the particular content that renewal is repaired can be referred specifically to by external scripts
Fixed, upgrade logic can also be aided in controlling by its exterior script file.Simplify the code logic design of upgrading more new file.
This method allows the particular content of renewal reparation and logic to aid in controlling by its exterior script file, not only Code Design
Logical design is simple, and it is convenient compared to the method for current main flow, efficient to update upgrade file.Only need the U of insert band AKU
The External memory equipments such as disk, mobile hard disk can be achieved with automatically updating for file in system, greatly enhance exploitation, raw
Production, the efficiency for solving problems after sale.Especially mass disposal problems when, it is with the obvious advantage.
Brief description of the drawings
Fig. 1 shows that the embodiment of the present invention 1 updates the flow chart of the method for file in linux system.
Fig. 2 is the schematic flow sheet that the present invention implements the operating method of file in 2 renewal linux systems.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
A kind of method of file in renewal linux system.Realize the AKU of issue, be placed directly in USB flash disk, movement firmly
Under the root of the External memory equipments such as disk, TV is then accessed, in TV automatic update system, and feed back renewal result.Ginseng
Fig. 1 is examined, implementation includes the following aspects：
It is outside after having detected USB flash disk, having moved the External memory equipment access TV such as hard for the TV of linux kernel
Storage device will be mounted to system, and our cans read and write the file performed in these External memory equipments after the completion of carry
.One function interface is designed, after the completion of External memory equipment carry, the functional interface will be called, the functional interface
The function of realization includes：
S1：After the completion of External memory equipment carry, judge whether there is satisfactory script under the catalogue of agreement.AKU
There is fixed name XXXXX, i.e. this file accompanies fixed name, and script file also secures title.Judgement " is deposited/outside
This file of storage equipment carry path/AKU Folder Name/script name " whether there is, and the mesh of then illustration convention be present
There is satisfactory script under record.
S2：Judge the legitimacy of script.Check value is calculated with checking algorithm, it is whether correct with script check bit, correctly
It is legal to be then judged as, is otherwise judged as illegal.Script checking algorithm phase during the checking algorithm of this step will be issued with AKU
Should.
S3：After S2 judges that script file is legal, script is decrypted, script is reduced to normal shell scripts.This step is to rise
The inverse process of script encryption in level bag issuing steps D1.Algorithm will be corresponding to.Here S2, S3 step check algorithm and AES can
Flexibly selection.
S4：It was found from the shell content for script in D1, have a variable and specially preserve the path of file to be updated
And title, form such as " varXXX=/WWW/YYY/ZZZ ".Parse preserved the path of file to be updated in shell scripts and
The variable of file name, learn wrong file to be updated, its renaming is backed up, renaming does not make a mistake explanation
It is xxxx.so to back up the file successfully, such as to be updated, and is renamed as xxxx1.so.
S5：Assign script attribute-executable.
S6：Perform script.System () can be used, the mode such as exec, popen () performs shell scripts.According to
The write method of script in D1, only it is to be understood that script has run the state value of backed off after randomJust it can judge whether script correctly performs
.
S7：Show that an information alert frame provides the prompting that upgrading is updated successfully if script is executed correctly, on UI,
Then TV is restarted automatically；If script implementation procedure changes back the file of renaming in S4 original file there occurs mistake
Name.
The making issue of AKU
AKU includes two parts content：Specific file to be updated and part is specified to update the shell of upgrade logic
Script and the correct file gone in system will be updated to.
D1, script are intended to write according to the producer of AKU, and script does not have immobilized substance, and general contents and requirement are such as
Under, its main contents mainly it is following some：
①：Specified the path of the file of renewal to be upgraded and filename with a variable in linux system, such as
" varXXX=/WWW/YYY/ZZZ ", learnt to parse the variable in S4 by file to be updated.
②：With the subregion where mount orders again carry 1. middle path, make the subregion have it is readable can write permission.Such as：
mount-oremount RW XXXXXXX.
③：The correct file in AKU in the External memory equipments such as USB flash disk, mobile hard disk is copied to using CP command
Under path in S1.Such as：Cp/ External memory equipments carry path/AKU Folder Name/correct file/WWW/YYY/ZZZ
④：The data in internal memory are written in physical storage medium with sync orders, it is ensured that file, which replicates, to be completed, for
It is exactly Flash in general TV.
⑤：Each order can all have a command determination after performing in shell scriptsValue, i.e., the order perform
Return value, performed correctly for 0 explanation, otherwise perform failure.Next Command is performed if the correct execution of order, if lost
Lose, perform the execution that exit XXX (XXX is the value of a non-zero) exit shell scripts, it is non-zero state now to exit state.
So design, after if shell scripts have performed, is moved back according to the state value that script exits with regard to that can learn whether script runs success
The value that does well is that 0 explanation script is executed correctly；Perform if backed off after random state value is non-zero state and represent if shell scripts
Perform out process and mistake occur.
Such as：
D2, after after the shell script encryptions in D1, verification and it will will be updated in system and go correct file to be packaged in
AKU is made as together.Here encryption and checking algorithm designed, designed.
In order to prevent script file by falsification and ensure that the source of AKU is correct, the whole shell scripts in AKU
To pass through encryption and verification, and first to encrypt and then verify.Verification be in order to prevent file by other people falsifications, encryption be in order to
Do not want the script file for allowing other people to see plaintext, method of calibration and cipher mode can be with designed, designeds.
Method of calibration：As long as can play a part of preventing other people falsification files, these methods can be verified with MD5,
Also can one simple checking algorithm of designed, designed.Such as：Script can be handled with binary file, each BYTE is added
The result arrived is stored in a BYTE, and the value then is appended into end of file.It is also with same sample prescription when so S2 steps verify
Method verifies, and simply last BYTE does not participate in verification and calculated, and verification contrasts after the completion of calculating with last BYTE, if one
Sample then judges to verify successfully.
AES：As long as the effect for obscuring plaintext can be played, other people AES can be used, can also oneself
Design one is simple, such as：Script can be handled with binary file, each BYTE adds 1, S3 step decryption methods to be
The inverse process of AES, such S3 steps are exactly to handle this document with binary system, and each BYTE, which subtracts 1, to be decrypted.
File in AKU is that will be updated to the correct text for going to replace wrong file in linux system in system
Part, this document is without encryption.
Embodiment 2
With reference to figure 2, a kind of operating method for updating file in linux system, comprise the following steps：Downloaded by network etc.
Mode obtains the AKU of issue, and the AKU is placed in the External memory equipments such as USB flash disk, mobile hard disk, then deposited outside
Store up equipment insertion television USB interface, now can calling function interface perform External memory equipment in shell scripts.TV system
Wrong file in system automatic update system, if do not made a mistake, have the prompt message that renewal upgrades successfully, Ran Houchong
Open TV；Recover to implement the file backed up in S4 steps in 1 if failure.So that update the particular content repaired and patrol
Collecting can be controlled by its exterior shell script files, and the code logic design of this mode upgrade file is simple, renewal upgrading
File is convenient compared to the method for current main flow, efficient.
The present invention mainly devises a kind of method that file in upgrade-system is aided in external file.Connect in main program
Mouth realizes the function of performing the script in external storage equipment, so that particular content and logic that renewal is repaired can be by
Its exterior script file controls, and the code logic design of this mode upgrade file is simple, and renewal upgrade file is compared to current
The method of main flow is convenient, efficient.
Specific upgrade file can be specified by the script of outside by realizing, auxiliary complete file in television system from
Dynamic renewal, not only simplify the design of code, also improve in exploitation, production, the solution efficiency to encounter problems after sale, without
Go to solve the problems, such as by way of upgrading main program or difference upgrading again, artificial disturbance, simple and quick, effect are not needed during upgrading
Rate is high.
The way that method provided by the invention upgrades relative to traditional upgrading main program or difference, it is more quick and easy,
And flexibility is very big, AKU producer can write script according to the demand of oneself, specific file in more new system.
Method provided by the invention originally uses simply, only needs the USB such as USB flash disk, the mobile hard disk of insert band AKU to deposit
Renewal of the equipment with regard to file in energy automatic realizing system is stored up, exploitation, production is greatly enhanced, solves problems after sale
Efficiency.Especially mass disposal problems when, it is with the obvious advantage.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, however, it is to be understood that ability
Field technique personnel can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in the application public affairs
Within the spirit and spirit opened.More specifically, can be to the group of theme combination layout in the range of disclosure
A variety of variations and modifications are carried out into part and/or layout.In addition to the variations and modifications carried out to building block and/or layout,
To those skilled in the art, other purposes also will be apparent.
Claims (6)
- A kind of 1. method for updating file in linux system, it is characterised in that be included in the master of the TV based on linux system One function interface is designed in program, the functional interface is called when television system detects External memory equipment access, institute State functional interface and realize herein below：A：Whether there are satisfactory shell scripts under the catalogue for judging to arrange in the External memory equipment of access TVB：Judge the legitimacy of script and delete check bit.It is whether correct with checking algorithm verification script check bit, correctly then sentence Break to be legal, now delete check bit, continue step C, be otherwise judged as illegal, end upgrading；C：After correct judgment, script is decrypted, script is reduced to normal shell scripts；D：Parse file to be updated, backed up from script；E：Assign script attribute-executable；F：Perform script；G:Judge whether script correctly performs, if after shell scripts have performed, exit status values are $Value be 0 explanation Script is executed correctly；It is $ that if shell scripts, which perform backed off after random state value,Value then represent to perform out process for non-zero state There is mistake；H：Judged result in G, show that an information alert frame provides upgrading more if script is executed correctly, on UI New successfully prompting, then restarts TV automatically；If script implementation procedure is there occurs mistake, by the file backed up in D also It is former.
- A kind of 2. method for updating file in linux system according to claim 1, it is characterised in that：The present invention also wraps The AKU for upgrading renewal is included, the AKU includes the shell scripts of wrong file in control more new system and will It is updated to the correct file gone in system.
- A kind of 3. method for updating file in linux system according to claim 2, it is characterised in that：Symbol described in A It is the shell scripts included in AKU to close desired shell scripts, and the Shell scripts are according to the content to be upgraded Write, its main contents include it is following some：A1：Specified the path of the file of renewal to be upgraded and filename with a variable in linux system；A2：With the subregion where path in mount orders again carry A1, make the subregion have it is readable can write permission；A3：Correct file in AKU in External memory equipment is copied under the path in A1；A4：The data in internal memory are written in physical storage medium with sync orders；A5：Each order can all have a command determination after performing in shell scriptsValue, i.e., the order perform return Value, performed correctly for 0 explanation, otherwise perform failure；Next Command is performed if the correct execution of order, if failure Exit XXX are performed, XXX is the value of a non-zero, exits the execution of shell scripts, it is non-zero state now to exit state.
- A kind of 4. method for updating file in linux system according to claim 3, it is characterised in that：After shell script encryptions in A, verification and it will will be updated in system and go correct file to be packaged with being made as AKU is issued.
- A kind of 5. method for updating file in linux system according to claim 1, it is characterised in that：Perform script in F When, perform shell scripts using system () or exec or popen () mode.
- 6. a kind of operating method for updating file in linux system, it is characterised in that comprise the following steps：User obtains AKU；AKU is put into the External memory equipment with USB interface；By the USB port on the External memory equipment insertion TV with USB interface；Wrong file in television system more new system, customer upgrade result is informed by UI prompt messages.
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