CN105550060A - Increment upgrade backup method and device - Google Patents
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- CN105550060A CN105550060A CN201410605593.4A CN201410605593A CN105550060A CN 105550060 A CN105550060 A CN 105550060A CN 201410605593 A CN201410605593 A CN 201410605593A CN 105550060 A CN105550060 A CN 105550060A
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Abstract
The invention is applicable to the software upgrade field of the android system and provides an increment upgrade backup method and device. The method comprises following steps of when opening an increment upgrading package, creating a backup package, wherein the backup package is used for storing system recovery files and system recovery control information files demanded for system recovery; upgrading system software according to the increment upgrading package; while upgrading, backing up system difference files before upgrading according to the information of the increment upgrading package and the original information of the system software, generating the system recovery files and the system recovery control information files and storing in the backup package; closing the increment upgrading package after finishing upgrading; and closing the backup package after finishing backup. According to the embodiment of the invention, the resource utilization rate can be improved.
Description
Technical field
The invention belongs to the software upgrading field of Android system, particularly relate to backup method and the device of the upgrading of a kind of increment.
Background technology
Increment upgrading is the upgrading mode of present Android system main flow, the features such as it is little that it possesses volume, and speed of download is fast.But, unidirectional upgrading is only supported in current increment upgrading, namely lowest version is upgraded toward highest version, if to the unsatisfied words of highest version after customer upgrade, be cannot return back to before lowest version, at this moment, the lowest version before if user needs to install, then need to do complete system backup to old version, and complete system backup can occupy a large amount of disk spaces, thus cause the wasting of resources.
Summary of the invention
Embodiments provide the backup method of a kind of increment upgrading, being intended to solve existing method needs complete system backup when backing up old version, thus causes the problem of the wasting of resources.
The embodiment of the present invention is achieved in that the backup method that a kind of increment is upgraded, and described method comprises the steps:
When opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file;
Information according to described increment AKU is upgraded to system software;
While upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag;
Described increment AKU is closed after upgrading terminates;
Described backup bag is closed after Backup end.
Another object of the embodiment of the present invention is the back-up device providing a kind of increment to upgrade, and described device comprises:
Backup bag creating unit, for when opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file;
Software upgrading unit, for upgrading to system software according to the information of described increment AKU;
Software backup unit, for while upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag;
Increment AKU closing unit, for closing described increment AKU after upgrading terminates;
Backup bag closing unit, for closing described backup bag after Backup end.
In embodiments of the present invention, due to without the need to upgrading before system software do complete system backup, just can revert to the system software before upgrading according to the system software after backup bag and upgrading, and the memory headroom that backup bag takies is substantially identical with the memory headroom that increment AKU takies, the memory headroom that complete system backup takies is done much smaller than to the system software before upgrading, therefore, the backup method of the application greatly can save storage space, improves resource utilization.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the backup method of a kind of increment upgrading that first embodiment of the invention provides;
Fig. 2 is the structural drawing of the back-up device of a kind of increment upgrading that second embodiment of the invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the embodiment of the present invention, while system software being upgraded according to the information of increment AKU, according to the described information of increment AKU and the original information of system software, the systematical difference file before upgrading is backed up, generation system is original and system reducing control information file also, and is kept in described backup bag.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
embodiment one:
Fig. 1 shows the process flow diagram of the backup method of a kind of increment upgrading that first embodiment of the invention provides, in the present embodiment, while employing increment AKU carries out increment upgrading to system software, back up the system software information before upgrading according to the information of increment AKU and the original information of system software, details are as follows:
Step S11, when opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file.
Wherein, system upgrade file comprises patch file and upgrade file (as deleted file list, newly-increased file etc.), and system upgrade control information file comprises the script file running delete file operation, alternate file operation and increase newly needed for file operation.
Preferably, before opening increment AKU, need to carry out signature check to increment AKU, to judge that whether this increment AKU is legal, safety.When opening increment AKU, create backup bag, establishment backup bag obtains by directly copying increment AKU simultaneously, also can directly be wrapped as backup by the file that establishment one is empty.If obtain by directly copying increment AKU, then at the beginning of backup bag is created, its content comprised is identical with increment AKU, such as, an increment AKU generally includes following content: patch (pach) file, sha1 value verification script, deleted file list, platform check information, newly-increased file and the newly-increased file etc. at this newly-increased file, then the backup bag created also comprises foregoing.Wherein, sha1 value is the eap-message digest that file is obtained by Secure Hash Algorithm, can judge whether the data of the file that this sha1 value is corresponding change according to judging whether this sha1 value changes.Certainly, increment AKU can also comprise newly-increased file script file, newly-increased file permission amendment script file, deleted file script file etc., will not enumerate herein.
Step S12, the information according to described increment AKU is upgraded to system software.
Wherein, the described information according to described increment AKU specifically comprises the step that software is upgraded:
A1, verify the platform information of described increment AKU.In this step, the platform information of verification increment AKU mainly judges whether the platform that this increment AKU is suitable for mates with the platform residing for the software that will upgrade.
A2, when the platform information of described increment AKU mates with the platform of the current operation of system software, described system upgrade control information file is adopted to increase newly to described system software by the newly-increased file comprised in described system upgrade file, the patch file comprised by described system upgrade file replaces patch file corresponding with the patch file that described upgrade file comprises in described system software, and the file identification in the delete list to comprise according to described system upgrade file, delete the file that file identification in the delete list that described system upgrade file comprises is corresponding.Particularly, when the platform information of increment AKU and the platform information of the current operation of system software match, verify the sha1 value of all patches (pach) successively, and when being verified, merge all pach successively.Wherein, the sha1 value of pach is the character string corresponding with the content of pach.
Step S13, while upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag.
Particularly, describedly according to the described information of increment AKU and the original information of system software, the systematical difference file before upgrading to be backed up, generation system is original and system reducing control information file also, and the step be kept in described backup bag specifically comprises:
B1, in the delete list of backup bag, record the unique identification of the newly-increased file comprised in described system upgrade file; In backup bag stored in described system software in the patch file corresponding with the patch file that described upgrade file comprises; The file that file identification in the delete list comprised stored in described system upgrade file in backup bag is corresponding; Wherein, above-mentioned record newly-increased file uniquely identified delete list, stored in patch file and stored in file all belong to system restoring files.In this step, the file that the file increased newly by system software will be deleted in backup bag; The file that the file deleted by system software will increase newly in backup bag; Using the patch file that the patch file before system file is replaced wraps as backup.
B2, in backup bag stored in running delete file operation, alternate file operation and increasing the script file of file operation newly, stored in script file as system reducing control information file.
By above-mentioned steps, make to back up and wrap the patch that the patch stored is no longer highest version, but the patch of lowest version.
Preferably, described when backing up file corresponding to the file identification in bag in the delete list that comprises stored in described system upgrade file, comprise the steps:
Stored in the authority credentials needing the newly-increased file increased in backup bag; The described newly-increased file increased that needs is the file that file identification in the delete list that comprises of described system upgrade file is corresponding.
In this step, the newly-increased file that the file that file identification in the delete list that system upgrade file comprises is corresponding wraps as backup, be and be upgraded to the newly-increased file of highest version from lowest version, by the authority credentials of authority corresponding for this newly-increased file amendment script file record, be revised as the authority credentials of the amendment of the authority corresponding to the file script file in the delete list that system upgrade file comprises.Like this, when system software needs to reduce to lowest version from highest version, by the authority credentials of record in backup bag, corresponding operation is performed to the newly-increased file that backup bag stores.
Step S14, closes described increment AKU after upgrading terminates.
In this step, close increment AKU, upgrading completes.Further, increment AKU can be deleted after upgrading terminates, to reduce EMS memory occupation.
Step S15, closes described backup bag after Backup end.
In this step, after closedown backup bag, again signature operation is performed, to carry out signature check to this backup bag during subsequent upgrade to this backup bag.
In first embodiment of the invention, while software being upgraded according to the information of increment AKU, according to the described information of increment AKU and the original information of system software, the systematical difference file before upgrading is backed up, generation system is original and system reducing control information file also, and is kept in described backup bag.Namely in escalation process, adopt the source document that the patch file replacement system software of AKU is corresponding, and in replacement process, the source document that will replace is kept in backup bag, and the described recorded information backing up the file increased newly after bag also stores upgrading, thus the object that realization is upgraded simultaneously and backed up.Due to without the need to upgrading before system software do complete system backup, just can revert to the software before upgrading according to the system software after backup bag and upgrading, and the memory headroom that backup bag takies is substantially identical with the memory headroom that increment AKU takies, the memory headroom that complete system backup takies is done much smaller than to the system software before upgrading, therefore, the backup method of the application greatly can save storage space, improves resource utilization.
embodiment two:
Fig. 2 shows the structural drawing of the back-up device of a kind of increment upgrading that second embodiment of the invention provides, and the back-up device of the increment described in the disclosure upgrading can be applied to the such as fixed terminal such as Digital Television, desk-top computer.For convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
The back-up device of described increment upgrading comprises: backup bag creating unit 21, software upgrading unit 22, software backup unit 23, increment AKU closing unit 24, backup bag closing unit 25.Wherein:
Backup bag creating unit 31, for when opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file.
Wherein, system upgrade file comprises patch file and upgrade file (as deleted file list, newly-increased file etc.), and system upgrade control information file comprises the script file running delete file operation, alternate file operation and increase newly needed for file operation.
Preferably, before opening increment AKU, need to carry out signature check to increment AKU, to judge that whether this increment AKU is legal, safety.Wherein, the backup bag of establishment obtains by directly copying increment AKU, also can directly be wrapped as backup by the file that establishment one is empty.
Software upgrading unit 32, for upgrading to system software according to the information of described increment AKU.
Preferably, described software upgrading unit 32 comprises:
Platform information correction verification module, for verifying the platform information of described increment AKU.Wherein, the platform information verifying increment AKU mainly judges whether the platform that this increment AKU is suitable for mates with the platform residing for the software that will upgrade.
Patch merges module, for when the platform information of described increment AKU mates with the platform of the current operation of system software, described system upgrade control information file is adopted to increase newly to described system software by the newly-increased file comprised in described system upgrade file, the patch file comprised by described system upgrade file replaces patch file corresponding with the patch file that described upgrade file comprises in described system software, and the file identification in the delete list to comprise according to described system upgrade file, delete the file that file identification in the delete list that described system upgrade file comprises is corresponding.
Particularly, when the platform information of increment AKU and the platform information of the current operation of software match, verify the sha1 value of all pach successively, and when being verified, merge all pach successively.Wherein, the sha1 value of pach is with character string corresponding to the content of pach.
Software backup unit 33, for while upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag.
Wherein, described software backup unit 33 comprises:
System restoring files determination module, for recording the unique identification of the newly-increased file comprised in described system upgrade file in the delete list of backup bag; In backup bag stored in described system software in the patch file corresponding with the patch file that described upgrade file comprises; The file that file identification in the delete list comprised stored in described system upgrade file in backup bag is corresponding; Wherein, above-mentioned record newly-increased file uniquely identified delete list, stored in patch file and stored in file all belong to system restoring files;
System reducing control information file determination module, stored in running delete file operation, alternate file operation and increasing the script file of file operation newly in backup bag, stored in script file as system reducing control information file.
Preferably, authority credentials record cell, for backing up in bag stored in the authority credentials needing the newly-increased file increased; The described newly-increased file increased that needs is the file that file identification in the delete list that comprises of described system upgrade file is corresponding.
Wherein, file corresponding to the file identification in the delete list that comprises of system upgrade file is as the newly-increased file of backup bag.
Increment AKU closing unit 34, for closing described increment AKU after upgrading terminates.
Further, increment AKU can be deleted after upgrading terminates, to reduce EMS memory occupation.
Backup bag closing unit 35, for closing described backup bag after Backup end.
Wherein, after closedown backup bag, again signature operation is performed, to carry out signature check to this backup bag during subsequent upgrade to this backup bag.
In embodiments of the present invention, due to without the need to upgrading before software do complete system backup, just can revert to the system software before upgrading according to the system software after backup bag and upgrading, and the memory headroom that backup bag takies is substantially identical with the memory headroom that increment AKU takies, the memory headroom that complete system backup takies is done much smaller than to the system software before upgrading, therefore, the application greatly can save storage space, improves resource utilization.
One of ordinary skill in the art will appreciate that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a backup method for increment upgrading, it is characterized in that, described method comprises the steps:
When opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file;
Information according to described increment AKU is upgraded to system software;
While upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag;
Described increment AKU is closed after upgrading terminates;
Described backup bag is closed after Backup end.
2. the method for claim 1, is characterized in that, the described information according to described increment AKU specifically comprises the step that system software is upgraded:
Verify the platform information of described increment AKU;
When the platform information of described increment AKU mates with the platform of the current operation of system software, described system upgrade control information file is adopted to increase newly to described system software by the newly-increased file comprised in described system upgrade file, the patch file comprised by described system upgrade file replaces patch file corresponding with the patch file that described upgrade file comprises in described system software, and the file identification in the delete list to comprise according to described system upgrade file, delete the file that file identification in the delete list that described system upgrade file comprises is corresponding.
3. method as claimed in claim 2, it is characterized in that, describedly according to the described information of increment AKU and the original information of system software, the systematical difference file before upgrading to be backed up, generation system is original and system reducing control information file also, and the step be kept in described backup bag specifically comprises:
The unique identification of the newly-increased file comprised in described system upgrade file is recorded in the delete list of backup bag; In backup bag stored in described system software in the patch file corresponding with the patch file that described upgrade file comprises; The file that file identification in the delete list comprised stored in described system upgrade file in backup bag is corresponding; Wherein, above-mentioned record newly-increased file uniquely identified delete list, stored in patch file and stored in file all belong to system restoring files;
Stored in running delete file operation, alternate file operation and increasing the script file of file operation newly in backup bag, stored in script file as system reducing control information file.
4. method as claimed in claim 3, is characterized in that, described when backing up file corresponding to the file identification in the delete list comprised stored in described system upgrade file in bag, comprises the steps:
Stored in the authority credentials needing the newly-increased file increased in backup bag; The described newly-increased file increased that needs is the file that file identification in the delete list that comprises of described system upgrade file is corresponding.
5. a back-up device for increment upgrading, it is characterized in that, described device comprises:
Backup bag creating unit, for when opening increment AKU, create backup bag, the information of described increment AKU comprises multiple system upgrade file and system upgrade control information file, and described backup bag is for the system restoring files needed for saved system reduction and system reducing control information file;
Software upgrading unit, for upgrading to system software according to the information of described increment AKU;
Software backup unit, for while upgrading, back up the systematical difference file before upgrading according to the described information of increment AKU and the original information of system software, generation system is original and system reducing control information file also, and is kept in described backup bag;
Increment AKU closing unit, for closing described increment AKU after upgrading terminates;
Backup bag closing unit, for closing described backup bag after Backup end.
6. device as claimed in claim 5, it is characterized in that, described software upgrading unit comprises:
Platform information correction verification module, for verifying the platform information of described increment AKU;
Patch merges module, for when the platform information of described increment AKU mates with the platform of the current operation of system software, described system upgrade control information file is adopted to increase newly to described system software by the newly-increased file comprised in described system upgrade file, the patch file comprised by described system upgrade file replaces patch file corresponding with the patch file that described upgrade file comprises in described system software, and the file identification in the delete list to comprise according to described system upgrade file, delete the file that file identification in the delete list that described system upgrade file comprises is corresponding.
7. device as claimed in claim 6, it is characterized in that, described software backup unit comprises:
System restoring files determination module, for recording the unique identification of the newly-increased file comprised in described system upgrade file in the delete list of backup bag; In backup bag stored in described system software in the patch file corresponding with the patch file that described upgrade file comprises; The file that file identification in the delete list comprised stored in described system upgrade file in backup bag is corresponding; Wherein, above-mentioned record newly-increased file uniquely identified delete list, stored in patch file and stored in file all belong to system restoring files;
System reducing control information file determination module, stored in running delete file operation, alternate file operation and increasing the script file of file operation newly in backup bag, stored in script file as system reducing control information file.
8. device as claimed in claim 7, it is characterized in that, described device comprises:
Authority credentials record cell, for backing up in bag stored in the authority credentials needing the newly-increased file increased; The described newly-increased file increased that needs is the file that file identification in the delete list that comprises of described system upgrade file is corresponding.
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