CN113485736B - System increment updating method and device - Google Patents
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Abstract
The invention discloses a system increment updating method and a device, wherein the method comprises the following steps: firstly, acquiring an increment packet; and combining the increment package with the unchanged file to form a new partition mounting point, and replacing the mounting point of the original partition with the new partition mounting point to enable the system to run on the new partition mounting point so as to finish increment updating of the system. Wherein the incremental package is generated according to file paths and file fingerprints of partition files with different system versions. The embodiment of the invention can improve the incremental updating efficiency of the system and realize the non-invasive system updating.
Description
Technical Field
The present invention relates to the field of data updating technologies, and in particular, to a system incremental updating method and apparatus.
Background
With the increasing of application services provided by consumer electronic products such as smart phones and wearable devices, the application range of data update services such as system update, application software upgrade, security hole repair and the like is wider and wider. Wherein, the change of the code or the data is the main reason that the new version and the old version of the software are different, and the difference information between the new version and the old version of the software is often far smaller than the size of the software. Thus, it is very efficient to update using data delta.
In the prior art, the system performs incremental update by the following steps: binary comparison is carried out on the new firmware image and the original version image through a tool to obtain a binary difference part, and the difference part is combined and burnt into an operating system partition according to a certain algorithm to complete the incremental upgrading process. However, in the incremental package manufacturing process, the time consumption is long due to binary comparison difference, so that the efficiency of incremental update of the system is low; and the operating system is replaced by a new version after the upgrade is finished, and if an abnormality occurs, the operating system cannot fall back to the original version.
Disclosure of Invention
The embodiment of the invention provides a system increment updating method and device, which improve the system increment updating efficiency and realize non-invasive system updating.
A first aspect of an embodiment of the present application provides a system incremental update method, including:
acquiring an increment packet; wherein the incremental package is generated according to file properties of the partition files of the plurality of system versions, the file properties including: file path and file fingerprint;
Combining the increment package and the unchanged file to form a new partition mounting point;
and replacing the mounting point of the original partition with the mounting point of the new partition so that the system operates on the mounting point of the new partition to finish incremental updating of the system.
In a possible implementation manner of the first aspect, the incremental package is generated according to file properties of partition files with different system versions, specifically:
Comparing the file paths of the plurality of partition files after obtaining the file paths, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, comparing the file fingerprints of the plurality of partition files after obtaining the file fingerprints, and recording the file fingerprints as a second changed file when the file fingerprints have differences in different system versions;
recording and outputting file paths of the first change file and the second change file to a file change list;
and calling the corresponding files in the file change list in the new version partition and generating the increment packet.
In a possible implementation manner of the first aspect, forming a new partition mounting point includes:
Generating a final image file, and taking the final image file as a new partition mounting point;
or generating a virtual directory, and taking the virtual directory as a new partition mounting point.
In a possible implementation manner of the first aspect, a final image file is generated, and the final image file is taken as a new partition mounting point, specifically:
Acquiring an initial image file, and mounting the initial image file to a first directory; wherein the initial image file is available from an incremental package;
copying the unchanged file to a first directory;
And canceling the mounting of the first catalog to generate a final image file, and taking the final image file as a new partition mounting point.
In a possible implementation manner of the first aspect, a virtual directory is generated, and the virtual directory is taken as a new partition mounting point, specifically:
Mapping the files in the incremental package to a second directory;
combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is a virtual directory;
Setting the priority of the second directory higher than that of the original partition;
And taking the third directory as a new partition mounting point.
A second aspect of an embodiment of the present application provides a system incremental update apparatus, including: an acquisition module and an update module;
the acquisition module is used for acquiring the increment packet; wherein the incremental package is generated according to file properties of the partition files of the plurality of system versions, the file properties including: file path and file fingerprint;
The updating module is used for combining the increment package and the unchanged file to form a new partition mounting point, and then replacing the mounting point of the original partition with the new partition mounting point so that the system operates on the new partition mounting point to complete increment updating of the system.
In a possible implementation manner of the second aspect, the incremental package is generated according to file properties of partition files with different system versions, specifically:
Comparing the file paths of the plurality of partition files after obtaining the file paths, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, comparing the file fingerprints of the plurality of partition files after obtaining the file fingerprints, and recording the file fingerprints as a second changed file when the file fingerprints have differences in different system versions;
recording and outputting file paths of the first change file and the second change file to a file change list;
and calling the corresponding files in the file change list in the new version partition and generating the increment packet.
In a possible implementation manner of the second aspect, forming a new partition mounting point includes:
Generating a final image file, and taking the final image file as a new partition mounting point;
or generating a virtual directory, and taking the virtual directory as a new partition mounting point.
In a possible implementation manner of the second aspect, a final image file is generated, and the final image file is taken as a new partition mounting point, specifically:
Acquiring an initial image file, and mounting the initial image file to a first directory; wherein the initial image file is available from an incremental package;
copying the unchanged file to a first directory;
And canceling the mounting of the first catalog to generate a final image file, and taking the final image file as a new partition mounting point.
In a possible implementation manner of the second aspect, a virtual directory is generated, and the virtual directory is taken as a new partition mounting point, specifically:
Mapping the files in the incremental package to a second directory;
combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is a virtual directory;
Setting the priority of the second directory higher than that of the original partition;
And taking the third directory as a new partition mounting point.
Compared with the prior art, the system increment updating method and device provided by the embodiment of the invention have the beneficial effects that: the increment updating method of the embodiment of the invention firstly obtains an increment packet; and combining the increment package with the unchanged file to form a new partition mounting point, and replacing the mounting point of the original partition with the new partition mounting point to enable the system to run on the new partition mounting point so as to finish increment updating of the system. Wherein the delta package is generated according to file properties of a plurality of partition files with different system versions, the file properties comprising: file path and file fingerprint. According to the method, the incremental package is manufactured through the comparison file path and the file fingerprint, and as the comparison file path only needs to compare the character strings and the comparison file fingerprint, an md5 algorithm can be adopted, and the comparison method is simple and quick; in the prior art, incremental packages are formed by comparing binary systems, and at present, bsdiff tools are generally adopted for binary system comparison, and the algorithms adopted by the tools are high in complexity, large in memory consumption and low in efficiency. Therefore, the invention improves the manufacturing efficiency by comparing the file path with the file fingerprint to manufacture the increment package, thereby further improving the system updating efficiency. In addition, since the delta package is formed according to any one of the original version, the history version and the new version, one delta package can be applied to a plurality of different versions of the system, unlike the prior art, which can only be applied to a specific original version, but cannot be applied to other versions. Finally, the method includes the steps of. Since incremental updating is achieved by forming new partition mounting points, non-invasive upgrading can be achieved, and the situation that an operating system can be replaced by a new version after upgrading is completed and cannot fall back to an original version if abnormality occurs is avoided.
Drawings
FIG. 1 is a flow chart of a system incremental update method according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a system incremental updating device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a flow chart of a system incremental update method according to an embodiment of the present invention includes:
S101: and obtaining an increment package.
In this embodiment, the incremental package is generated according to file properties of partition files with different system versions, where the file properties include: file path and file fingerprint.
In one embodiment, the system version includes: original version, history version and new version.
In a specific embodiment, the incremental package is generated according to file properties of partition files with different system versions, specifically:
comparing the file paths of the plurality of partition files after obtaining the file paths, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, recording as a second change file when the file fingerprints have differences in different system versions.
Recording and outputting the file paths of the first change file and the second change file to a file change list;
And calling the corresponding files in the file change list in the new version partition and generating the increment packet.
In one embodiment, the manner in which file fingerprints are obtained is not limited to using md5, but includes other ways and means of distinguishing between different files.
In a specific embodiment, the system includes, but is not limited to, linux, android, windows, and may also be in the form of an embedded single-chip microcomputer, which belongs to the scope of the patent as long as the system includes a file system.
S102: and combining the increment package and the unchanged file to form a new partition mounting point.
In this embodiment, the unchanged file is a file in which the file path and the file fingerprint have no difference in different system versions.
In a specific embodiment, the forming the new partition mounting point includes:
generating a final image file, and taking the final image file as the new partition mounting point;
or generating a virtual directory, and taking the virtual directory as the new partition mounting point.
In a specific embodiment, the generating a final image file, taking the final image file as the new partition mounting point, specifically includes:
s1021: and acquiring an initial image file, and mounting the initial image file to a first directory.
Wherein the initial image file is available from the delta package.
S1022: copying the unchanged file to the first directory.
If the file with the same file path as the unchanged file exists in the increment packet, the file is not copied.
S1023: and canceling the mounting of the first catalog to generate a final image file, and taking the final image file as the mounting point of the new partition.
In a specific embodiment, the generating a virtual directory, taking the virtual directory as the new partition mounting point, specifically includes:
Mapping the files in the increment package to a second directory;
Combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is the virtual directory;
Setting the priority of the second directory to be higher than that of the original partition;
and taking the third directory as the new partition mounting point.
In a specific embodiment, the operating system may be a linux overlayfs mechanism.
S103: and replacing the mounting point of the original partition with the mounting point of the new partition so that the system operates on the mounting point of the new partition to finish incremental updating of the system.
In a preferred embodiment, the incremental package generation method specifically includes:
the system version includes: original version: v1.0; historical version: v1.1, V1.2; new version: v1.3. The plurality of partition files having different system versions includes: original partition file, history partition file one, history partition file two, new partition file.
And comparing the file paths of the original partition file, the historical partition file I, the historical partition file II and the new partition file after obtaining the file paths, and recording the file paths as a first changed file if the file paths have differences in different system versions. Such as: in the original version V1.0, the file path of the original partition file is/root/A; in the history versions V1.1 and V1.2, file paths of the history partition file I and the history partition file II are still/root/A; in the new version V1.3, if the file path of the new partition file becomes/root/B, the new partition file is recorded as a first changed file.
If the file path does not have a difference in different system versions, for example: the file paths of the original partition file, the historical partition file I, the historical partition file II and the new partition file are all/root/A, file fingerprints of a plurality of partition files are obtained and then compared, and when the file fingerprints have differences in different system versions, the file fingerprints are recorded as second changed files. Such as: in the original version V1.0, the file fingerprint of the original partition file is 1234; in the historical versions V1.1 and V1.2, the file fingerprints of the first historical partition file and the second historical partition file are still 1234; in the new version V1.3, if the file fingerprint of the new partition file becomes 4321, the new partition file is recorded as a second change file.
And recording and outputting the file paths of the first change file and the second change file to a file change list, for example, recording and outputting the file paths/root/A of the new partition files with changed file fingerprints to the file change list.
And finally, calling the corresponding files in the file change list in the new version partition and generating the increment package. And the corresponding files are files corresponding to a plurality of file paths recorded in the file change list.
In a preferred embodiment, the specific method for forming the new partition mounting point is as follows:
The system version includes: original version: v1.0; new version: v1.1. Two partition files are arranged in the original version V1.0, namely a first original partition file and a second original partition file, file paths are respectively/root/A and/root/B, and file fingerprints are 1234. Correspondingly, two partition files, namely a first new partition file and a second new partition file, are arranged in the new version V1.1, and file paths are still respectively/root/A and/root/B; the file fingerprint of the first new partition file becomes 4321 while the file fingerprint of the second new partition is still 1234. According to the method, the file path is unchanged, and the file fingerprint of the first original partition file in the original version 1.0 is different from the file fingerprint of the first new partition file in the new version V1.1, so that the first new partition file is recorded as a difference file, the file path is recorded, and the file corresponding to the root/A is manufactured into an increment packet. Similarly, the second new partition file is not a difference file, and is recorded as a constant file because the file path and the file fingerprint are not different.
And finally, merging the second new partition file (with the file path of/root/B) with the first new partition file (with the file path of/root/A) in the increment package into a new mounting point.
For further explanation of the system incremental update apparatus, please refer to fig. 2, fig. 2 is a schematic diagram of a system incremental update apparatus according to an embodiment of the present invention, which includes: an acquisition module 201 and an update module 202.
The acquisition module 201 is configured to acquire an incremental package; wherein the delta package is generated according to file properties of a plurality of partition files with different system versions, the file properties comprising: file path and file fingerprint.
In this embodiment, the incremental package is generated according to file properties of partition files with different system versions, specifically:
Comparing the file paths of the plurality of partition files after obtaining the file paths, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, comparing the file fingerprints of the plurality of partition files after obtaining the file fingerprints, and recording the file fingerprints as second changed files when the file fingerprints have differences in different system versions;
recording and outputting the file paths of the first change file and the second change file to a file change list;
And calling the corresponding files in the file change list in the new version partition and generating the increment packet.
The update module 202 is configured to combine the incremental package and the unchanged file to form a new partition mounting point, and then replace the new partition mounting point with the mounting point of the original partition, so that the system operates on the new partition mounting point, and incremental update of the system is completed.
In this embodiment, the forming the new partition mounting point includes:
generating a final image file, and taking the final image file as the new partition mounting point;
or generating a virtual directory, and taking the virtual directory as the new partition mounting point.
In a specific embodiment, the generating a final image file, taking the final image file as the new partition mounting point, specifically includes:
acquiring an initial image file, and mounting the initial image file to a first directory; wherein the initial image file is available from the delta package.
Copying the unchanged file to the first directory;
and canceling the mounting of the first catalog to generate a final image file, and taking the final image file as the mounting point of the new partition.
In a specific embodiment, the generating a virtual directory, taking the virtual directory as the new partition mounting point, specifically includes:
Mapping the files in the increment package to a second directory;
Combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is the virtual directory;
Setting the priority of the second directory to be higher than that of the original partition;
and taking the third directory as the new partition mounting point.
In the embodiment of the invention, the incremental package is acquired through the acquisition module 201, the incremental package and the unchanged file are combined through the updating module 202 to form the new partition mounting point, and the new partition mounting point is used for replacing the mounting point of the original partition, so that the system operates on the new partition mounting point, and the incremental updating of the system is completed. Wherein the delta package is generated according to file properties of a plurality of partition files with different system versions, the file properties comprising: file path and file fingerprint.
In the embodiment of the invention, the incremental package is manufactured by comparing the file path with the file fingerprint, and the comparison method is simple and quick as only the comparison character string and the comparison file fingerprint are needed to be compared in the comparison file path, and the md5 algorithm can be adopted; in the prior art, incremental packages are formed by comparing binary systems, and at present, bsdiff tools are generally adopted for binary system comparison, and the algorithms adopted by the tools are high in complexity, large in memory consumption and low in efficiency. Therefore, the invention improves the manufacturing efficiency by comparing the file path with the file fingerprint to manufacture the increment package, thereby further improving the system updating efficiency. In addition, since the delta package is formed according to any one of the original version, the history version and the new version, one delta package can be applied to a plurality of different versions of the system, unlike the prior art, which can only be applied to a specific original version, but cannot be applied to other versions. Finally, the method includes the steps of. Since incremental updating is achieved by forming new partition mounting points, non-invasive upgrading can be achieved, and the situation that an operating system can be replaced by a new version after upgrading is completed and cannot fall back to an original version if abnormality occurs is avoided.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. A system incremental update method, comprising:
Acquiring an increment packet; wherein the delta package is generated according to file properties of a plurality of partition files with different system versions, the file properties comprising: file path and file fingerprint; the incremental package is generated according to file properties of partition files with different system versions, and specifically comprises the following steps: comparing the file paths of the partition files after obtaining the file paths of the partition files, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, comparing the file fingerprints of the partition files after obtaining the file fingerprints, and recording the file fingerprints as a second change file when the file fingerprints have differences in different system versions; recording and outputting the file paths of the first change file and the second change file to a file change list; calling the corresponding files in the file change list in the new version partition and generating the increment packet;
combining the increment package and the unchanged file to form a new partition mounting point; the unchanged file is a file with file paths and file fingerprints which are not different in different system versions;
And replacing the mounting point of the original partition with the mounting point of the new partition so as to enable the system to run on the mounting point of the new partition and complete the incremental updating of the system.
2. The system incremental update method of claim 1 wherein the forming new partition mount points comprises:
generating a final image file, and taking the final image file as the new partition mounting point;
or generating a virtual directory, and taking the virtual directory as the new partition mounting point.
3. The system incremental updating method according to claim 2, wherein the generating a final image file, taking the final image file as the new partition mounting point, specifically includes:
Acquiring an initial image file, and mounting the initial image file to a first directory; wherein the initial image file is obtained by the increment package;
copying the unchanged file to the first directory;
and canceling the mounting of the first catalog to generate a final image file, and taking the final image file as the mounting point of the new partition.
4. The system incremental updating method according to claim 2, wherein the generating a virtual directory, taking the virtual directory as the new partition mounting point, specifically includes:
Mapping the files in the increment package to a second directory;
Combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is the virtual directory;
Setting the priority of the second directory to be higher than that of the original partition;
and taking the third directory as the new partition mounting point.
5. A system incremental update apparatus, comprising: an acquisition module and an update module;
The acquisition module is used for acquiring the increment packet; wherein the delta package is generated according to file properties of a plurality of partition files with different system versions, the file properties comprising: file path and file fingerprint; the incremental package is generated according to file properties of partition files with different system versions, and specifically comprises the following steps: comparing the file paths of the partition files after obtaining the file paths of the partition files, judging whether the file paths have differences in different system versions, and if so, recording the file paths as a first changed file; if not, comparing the file fingerprints of the partition files after obtaining the file fingerprints, and recording the file fingerprints as a second change file when the file fingerprints have differences in different system versions; recording and outputting the file paths of the first change file and the second change file to a file change list; calling the corresponding files in the file change list in the new version partition and generating the increment packet;
The updating module is used for combining the increment package and the unchanged file to form a new partition mounting point, and then replacing the mounting point of the original partition with the new partition mounting point so that the system operates on the new partition mounting point to complete increment updating of the system; the unchanged file is a file with no difference in file paths and file fingerprints in different system versions.
6. The system incremental update apparatus of claim 5 wherein said forming new partition mounting points comprises:
generating a final image file, and taking the final image file as the new partition mounting point;
or generating a virtual directory, and taking the virtual directory as the new partition mounting point.
7. The system incremental updating device according to claim 6, wherein the generating a final image file, taking the final image file as the new partition mounting point, specifically includes:
Acquiring an initial image file, and mounting the initial image file to a first directory; wherein the initial image file is obtained by the increment package;
copying the unchanged file to the first directory;
and canceling the mounting of the first catalog to generate a final image file, and taking the final image file as the mounting point of the new partition.
8. The system incremental updating device according to claim 7, wherein the generating a virtual directory, taking the virtual directory as the new partition mounting point, specifically is:
Mapping the files in the increment package to a second directory;
Combining the original partition with the second directory through the characteristic of an operating system to generate a third directory; wherein the third directory is the virtual directory;
Setting the priority of the second directory to be higher than that of the original partition;
and taking the third directory as the new partition mounting point.
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