CN113220645A - Linux-compatible Android file display method and device - Google Patents
Linux-compatible Android file display method and device Download PDFInfo
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- CN113220645A CN113220645A CN202110597407.7A CN202110597407A CN113220645A CN 113220645 A CN113220645 A CN 113220645A CN 202110597407 A CN202110597407 A CN 202110597407A CN 113220645 A CN113220645 A CN 113220645A
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- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
- G06F16/162—Delete operations
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- G06F16/10—File systems; File servers
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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Abstract
The invention discloses a Linux-compatible Android file display method and device, wherein an internal storage directory of an Android system is mounted under a file directory of a Linux system; creating or deleting files in a file directory of an application of an Android system; and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file. After the user stores or deletes the file in the Android application, the stored file can be quickly found or a deleted file can be found on the desktop of the Linux system according to the Android application name and the file type.
Description
Technical Field
The invention relates to the field of computer operating systems, in particular to a Linux-compatible Android file display method and device.
Background
When a user uses an Android application in a Linux-compatible Android environment, there are usually requirements for storing files (pictures, videos, audios, texts, office documents, compressed packages, and the like), such as: the application nail of the Android system receives a word document sent by a friend, and stores the document, wherein the document can be stored in a certain subdirectory under an internal storage directory of the Android, and the specific directory is determined by the Android application. The problems existing in the prior art are as follows: due to the isolation effect of the docker container, Linux cannot access the internal storage directory of Android, and a user cannot know which subdirectory of the stored file is under the internal storage directory of Android.
Disclosure of Invention
In order to solve the problem that a user can quickly find a file stored in an Android application on a Linux desktop, the invention provides a Linux-compatible Android file display method and device.
On one hand, the invention provides a Linux-compatible Android file display method, which is applied to a Linux-compatible Android system environment and comprises the following steps:
mounting a first directory of an internal storage directory of an Android system to a second directory of a file directory of a Linux system;
creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
Further, the file monitoring process at the Linux side monitors file creation or deletion event messages in a second directory of a file directory of the Linux system, and specifically includes: and adding the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process of the Linux side, and reading and analyzing the file creating or deleting event message under the monitored file path by the file monitoring process of the Linux side.
Further, the determining, according to the file creating or deleting event message, a name of an Android application to which the created or deleted file belongs includes: and judging the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
Further, the determining the type of the created or deleted file specifically includes: the type of the created or deleted file is judged according to the suffix name of the created or deleted file.
Further, the creating or deleting a hard link of a file specifically includes: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
On the other hand, the invention provides a Linux-compatible Android file display device, which is applied in a Linux-compatible Android system environment, and comprises:
the mounting unit is used for mounting the first directory of the internal storage directory of the Android system to the second directory of the file directory of the Linux system;
an Android source file unit, configured to: creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
a Linux file monitoring unit, configured to: the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
a hard link processing unit to: and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
Further, the Linux file monitoring unit includes: and the file path monitoring subunit adds the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process at the Linux side, and the file monitoring process at the Linux side reads and analyzes the file creating or deleting event message under the monitored file path.
Further, the Linux file monitoring unit includes: and the Android application name judging subunit judges the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
Further, the Linux file monitoring unit includes: and a file type judgment subunit which judges the type of the created or deleted file according to the suffix name of the created or deleted file.
Further, the hard link processing unit includes: a hard link new or delete subunit for: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
Compared with the prior art, the invention has the following advantages:
the method can thoroughly solve the problem that a user can quickly find the file stored in the Android application on the Linux desktop. And in a Linux-compatible Android environment, files stored in the Android application are displayed on a Linux desktop in a classified manner. And generating or deleting corresponding hard links under the corresponding directories on the Linux desktop according to the monitoring result and the file type by monitoring the directories corresponding to certain Android application. After the user stores or deletes the file in the Android application, the stored file can be quickly found or a deleted file can be found on the desktop of the Linux system according to the Android application name and the file type.
Drawings
Fig. 1 is a schematic diagram illustrating a Linux-compatible Android file display method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a Linux-compatible Android file display apparatus according to an embodiment of the present invention;
fig. 3A is a schematic view illustrating a Linux-compatible Android file classification display according to an embodiment of the present invention;
fig. 3B is another schematic diagram illustrating a Linux-compatible Android file classification display according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic diagram illustrating a Linux-compatible Android file display method according to an embodiment of the present invention; the method is applied to the environment of Linux compatible with the Android system, and comprises the following steps:
step S1: mounting a first directory of an internal storage directory of an Android system to a second directory of a file directory of a Linux system;
in particular, Linux cannot access Android internal storage directories due to the isolation of the Docker container. The Linux user cannot access the internal storage directory (/ data/media/0) under the Android system.
When the Android system is started, the Android internal storage directory (/ data/media/0, mounted source directory) is mounted to a certain directory of the Linux system (var/lib/jstack/data/internal storage of the Linux system), namely a mounted target directory. After the Android is mounted, the Linux program can access the internal storage directory of the Android. When the user saves the file to the Android internal storage directory (/ data/media/0/), the "/var/lib/jstack/data/internal storage" of the Linux system can also view the saved file.
The files under the mounted source directory and the mounted target directory are synchronous, one file is created under the source directory, and the same file is created by the target directory synchronously; a file is deleted under the source directory and a file under the target directory is also deleted.
For example: the user saves a picture on the Android application QQ, and the picture is saved under the subdirectory (/ data/media/0/QQ subdirectory) of the Android internal storage directory application.
Step S2: creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
specifically, when a user uses an Android application to save or delete a file, the file is generated or deleted under a directory corresponding to the Android application of an Android internal storage directory (/ data/media/0 /).
Step S3: the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
specifically, the file monitoring process of Linux can monitor that files are generated and deleted under a "/var/lib/jstack/data/internal storage" directory.
After the Android system is started, a file monitoring process is started on a Linux side and used for monitoring generation and deletion of files under the internal storage of a directory/var/lib/jstack/data of the Linux system.
The specific implementation manner of the file monitoring process is as follows:
initialize and create inotify instance:
int fd=inotify_init();
adding the file path to the monitoring list of inotify, and returning a monitoring descriptor wd, namely starting to monitor the file path:
int wd=inotify_add_watch(fd,path,mask);
removing the file path from the inotify monitoring list, that is, no longer monitoring the file path:
int ret=inotify_rm_watch(fd,wd);
continuously reading data in the inotify in the monitoring process, and analyzing whether events of file generation, modification and deletion exist in a file path in the inotify list according to the data:
size_t len=read(fd,buf,BUF_LEN);
the data type of the read data buf is struct information _ event.
The inotify _ event structure is defined as follows:
struct inotify_event{
int wd;/*Watch descriptor*/
uint32_t mask;/*Mask of events*/
uint32_t cookie;
uint32_t len;/*Size of“name”field*/
char name[];/*Optional null-terminated name*/
};
in the inotify _ event structure, a wd variable is a monitoring descriptor wd returned when monitoring a file path is increased, and a file path where the inotify event occurs, that is, a file path where a file is generated or deleted, can be analyzed through wd. The mask variable represents the attributes that have file changes, including: generated, modified, deleted, etc. The name [ ] variable represents the name of the changed file.
Step S4: and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
Specifically, according to the corresponding Android application name and the file type, a corresponding hard link is created under a corresponding directory on a Linux system desktop. For example: if the QQ application is monitored to store a picture file named test. If the QQ application deletes a video file named as test.mp4, a video hard link file named as test.mp4 is deleted under a mobile application data/QQ/video directory of a Linux system desktop.
Further, the file monitoring process at the Linux side monitors file creation or deletion event messages in a second directory of a file directory of the Linux system, and specifically includes: and adding the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process of the Linux side, and reading and analyzing the file creating or deleting event message under the monitored file path by the file monitoring process of the Linux side.
Further, the determining, according to the file creating or deleting event message, a name of an Android application to which the created or deleted file belongs includes: and judging the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
The method for obtaining the currently active Android application name by the Linux side comprises the following steps:
when the Android application is started, the component app service responsible for interacting with the Linux at the Android side sends an application starting message containing an application name to the component app-manager responsible for communicating with the Android side at the Linux side through a socket (nested word, a communication mode). After receiving the message, the Linux side responsible for the component app-manager communicating with the Android side starts an Android application display window display-window program to display a page of the Android application, and sets the Android application name to an m _ package _ name variable of the Android application display window display-window.
When a user operates a certain Android application display window display-window, the window is set as a live window, and the application name of the currently active Android application display window display-window can be obtained by reading the m _ package _ name variable of the Android application display window display-window.
In addition, when a user stores a file in a certain Android application window and the file is not completely downloaded, the user is quickly switched to another Android application window. At this time, if it is determined that the Android application stores or deletes the file only by the currently active Android application name, a false determination may be caused. Therefore, the directory where the modified file is located needs to be combined, so that which Android application stores or deletes the file can be accurately judged. For example: take the WeChat application as an example. Images, videos of the friend circle and images and videos of the chat are stored in the Pictures/WeiXin folder after being pressed for a long time. The document files of pdf, xls, etc. of chat are stored in the Download/WeiXin folder after being pressed.
Further, the determining the type of the created or deleted file specifically includes: the type of the created or deleted file is judged according to the suffix name of the created or deleted file.
Further, the creating or deleting a hard link of a file specifically includes: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
Fig. 2 is a schematic diagram of a Linux-compatible Android file display apparatus according to an embodiment of the present invention; the device is applied to the environment of Linux compatible with an Android system, and comprises:
the mounting unit is used for mounting the first directory of the internal storage directory of the Android system to the second directory of the file directory of the Linux system;
creating or deleting an Android file unit, which is used for: creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
a Linux file monitoring unit, configured to: the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
a hard link processing unit to: and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
Further, the Linux file monitoring unit includes: and the file path monitoring subunit adds the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process at the Linux side, and the file monitoring process at the Linux side reads and analyzes the file creating or deleting event message under the monitored file path.
Further, the Linux file monitoring unit includes: and the Android application name judging subunit judges the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
Further, the Linux file monitoring unit includes: and a file type judgment subunit which judges the type of the created or deleted file according to the suffix name of the created or deleted file.
Further, the hard link processing unit includes: a hard link new or delete subunit for: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
Fig. 3A is a schematic view illustrating a Linux-compatible Android file classification display according to an embodiment of the present invention; on the desktop of the Linux system, folders are named according to the names of Android applications, and each application corresponds to one folder, such as a nail, a QQ and a WeChat.
Fig. 3B is another schematic diagram illustrating a Linux-compatible Android file classification display according to an embodiment of the present invention; on a desktop of a Linux system, all folders such as videos, pictures, documents, music and the like are corresponded according to file types under the condition of nailing the applied folders. For example: a user stores a picture file named test.jpeg in the nailing application of the Android system, and then a picture hard link file named test.jpeg is generated under a mobile application data/nailing/picture directory of the desktop of the Linux system.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A Linux-compatible Android file display method is applied to an environment compatible with an Android system, and comprises the following steps:
mounting a first directory of an internal storage directory of an Android system to a second directory of a file directory of a Linux system;
creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
2. The Linux-compatible Android file display method of claim 1, wherein the Linux-side file monitoring process monitors file creation or deletion event messages in a second directory of a file directory of the Linux system, and specifically comprises: and adding the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process of the Linux side, and reading and analyzing the file creating or deleting event message under the monitored file path by the file monitoring process of the Linux side.
3. The Linux-compatible Android file display method of claim 1, wherein the determining, according to the file creation or deletion event message, a name of an Android application to which the created or deleted file belongs is specifically: and judging the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
4. The Linux-compatible Android file display method of claim 1, wherein the determining of the type of the created or deleted file specifically comprises: the type of the created or deleted file is judged according to the suffix name of the created or deleted file.
5. The Linux-compatible Android file display method of claim 1, wherein the creating or deleting hard links of files specifically comprises: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
6. A Linux-compatible Android file display device is applied to an Linux-compatible Android system environment, and comprises:
the mounting unit is used for mounting the first directory of the internal storage directory of the Android system to the second directory of the file directory of the Linux system;
creating or deleting an Android file unit, which is used for: creating or deleting files in a file directory of an application of an Android system; the file directory of the application is a subdirectory of the first directory;
a Linux file monitoring unit, configured to: the file monitoring process at the Linux side monitors file creating or deleting event messages under a second directory of a file directory of the Linux system, judges the name of an Android application to which a created or deleted file belongs according to the file creating or deleting event messages, and judges the type of the created or deleted file;
a hard link processing unit to: and the Linux creates or deletes the hard link of the file according to the acquired name of the Android application to which the created or deleted file belongs and the file type of the created or deleted file.
7. The Linux-compatible Android file display device of claim 6, wherein the Linux file monitoring unit comprises: and the file path monitoring subunit adds the file path of the second directory of the file directory of the Linux system into a monitoring list of the file monitoring process at the Linux side, and the file monitoring process at the Linux side reads and analyzes the file creating or deleting event message under the monitored file path.
8. The Linux-compatible Android file display device of claim 6, wherein the Linux file monitoring unit comprises: and the Android application name judging subunit judges the name of the Android application to which the created or deleted file belongs according to the currently active Android application name and the directory where the created or deleted file is located.
9. The Linux-compatible Android file display device of claim 6, wherein the Linux file monitoring unit comprises: and a file type judgment subunit which judges the type of the created or deleted file according to the suffix name of the created or deleted file.
10. The Linux-compatible Android file display device of claim 6, wherein the hard link processing unit comprises: a hard link new or delete subunit for: if the folder of the Android application to which the created or deleted file belongs exists on the desktop of the Linux system, establishing or deleting a hard link of the file under the folder of the corresponding file type of the Android application to which the file belongs; if the folder of the Android application to which the created or deleted file belongs does not exist on the desktop of the Linux system, the folder of the Android application is newly created, and then the hard link of the file is created or deleted under the folder of the corresponding file type of the newly created Android application.
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