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WO2016061978A1 - Dispositif et procédé de montage de stockage mobile - Google Patents

Dispositif et procédé de montage de stockage mobile Download PDF

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Publication number
WO2016061978A1
WO2016061978A1 PCT/CN2015/074118 CN2015074118W WO2016061978A1 WO 2016061978 A1 WO2016061978 A1 WO 2016061978A1 CN 2015074118 W CN2015074118 W CN 2015074118W WO 2016061978 A1 WO2016061978 A1 WO 2016061978A1
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Prior art keywords
storage
storage device
space
storage space
file system
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PCT/CN2015/074118
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English (en)
Chinese (zh)
Inventor
陈伟
张凯
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ZTE Corp
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ZTE Corp
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor

Definitions

  • the present application relates to a mobile storage technology, and more particularly to a method and apparatus for implementing mobile storage mounting in a Linux system.
  • Linux systems have been widely used in the industry. Since the kernel version 2.6 supports real-time, the military also considers the use of Linux systems to replace the expensive real-time operating system VxWorks system (Wind River System, USA) ) launched a real-time operating system). However, the support of Linux for mobile storage, such as USB flash drives and mobile hard drives, is still not as perfect as that of Windows systems, requiring users to mount them.
  • the general method for identifying and mounting U disk and mobile hard disk under Linux system is realized by script or C program.
  • the general process is as follows: First, obtain USB hot plug event; then, according to USB hot plug event Determining whether the mobile storage is a storage device; then, if it is determined that the mobile storage is a storage device, and is an insertion event, and then obtaining the partition information of the storage device, querying the storage device partition file system type, and mounting according to the file system of the storage device partition The storage device is partitioned to the specified directory to enable the storage device to be mounted. If the event is unplugged, the storage device is unmounted.
  • a mobile terminal such as a mobile phone terminal
  • a mobile phone terminal is a portable communication device, which generally has a large storage space.
  • the remaining storage space is generally used as virtual storage.
  • the mobile phone also supports SD card expansion.
  • the virtual storage and the SD card on the mobile terminal are equivalent to one U disk.
  • the access mode of the mobile terminal is different.
  • the "U disk” mode is required under Windows
  • the "mass storage” mode is required under Linux; only the appropriate mode is selected, and the computer operates.
  • the system can detect the storage space of the device, obtain the storage device partition information, query the storage device partition file system type, and implement the mount. However, there are four or five selection modes, and users can only achieve the mounting of the mobile phone on the Linux system through multiple attempts.
  • the general procedure requires the user to complete the selection of the "mass storage” mode before determining whether the mobile storage is a storage device and whether it is an insertion event. If the selection of the "mass storage” mode is not completed, although the Linux system can recognize the storage device of the mobile terminal, the storage device partition cannot be identified because the drive loading process of the storage device of the mobile terminal is not completed.
  • the Linux system After the user completes the "mass storage” mode of the mobile phone, the Linux system still needs to query the storage device partition file system type for a period of time, and performs related records such as the storage device and the storage device partition file system type in the Linux system kernel. Update, it is even more difficult to query the file system type.
  • the hot plug event of the SD card is special.
  • the Linux system does not automatically give the storage device partition hot plug event, which means that only the SD card is given as the mobile storage hot plug event, which requires additional processing (for example: again Mounting or calling the underlying interface forcibly detecting) can trigger the system to give an event related to the storage device partition name.
  • the embodiment of the invention provides a method and a device for implementing mobile storage mounting, which can solve the problem that the general process performs mobile storage mounting under the Linux environment, and achieve good mounting of the mobile storage.
  • a method for implementing mobile storage mounting comprising:
  • the hot plug device When it is determined that the hot plug device is a storage device according to the universal serial bus USB hot plug event and is an insertion event, periodically check whether the storage device has a multimedia space within a predetermined duration;
  • the storage device is mounted according to the type of the file system that is queried.
  • the method further includes: when the storage device does not query the multimedia space,
  • a new thread is created to periodically query whether the storage device has a multimedia space.
  • the file system type of the query storage space is continuously executed.
  • the file system type of the query storage space includes:
  • the storage space is a storage device partition, querying a file system type of the storage space according to the storage device partition name;
  • the file system type of the storage space is queried according to the storage space name.
  • the mounting of the storage device according to the queried file system type includes:
  • the mounting of the storage device according to the type of the file system that is queried includes:
  • the storage space is mounted to the specified directory according to the type of the file system that is queried.
  • the method further includes prompting the user to perform a formatting process when the file system type of the storage space is not queried;
  • the formatting process includes: when the storage space is a storage device partition, formatting the storage device partition according to an external instruction, and continuing to mount the storage device partition to the specified directory; or, when the storage space is not a storage device partition, The storage space is formatted according to an external instruction, and the storage space is continuously mounted to the specified directory.
  • the method further includes: when determining that the hot plug device is a storage device according to the USB hot plug event and is an uninstall event, uninstalling the mobile storage;
  • the mount is ended.
  • the method further includes: after the mounting of the storage device is completed, loading information of the serial recording storage device into a preset file or shared memory, and updating.
  • the USB hot plug event is: a corresponding event generated by a Linux system kernel, including device path information, a device name, a storage device partition name, and subsystem information.
  • the determining, by the USB hot plug event, that the hot plug device is a storage device includes: device path information, subsystem information, storage device partition name, and storage device partition name of the hot plug device according to a USB hot plug event The device name is matched with the identification parameter of the storage device.
  • the storage space is: a hardware storage body that can store files
  • the hardware storage port of the storable file is: a space that can be formatted or formatted.
  • the mounting information of the serial record storage device to the preset file or the shared memory includes:
  • a mutex Using a mutex, a read-write lock, or a semaphore to implement multi-threading, and/or multi-process serial recording of the storage device's mount information into a pre-configured file or shared memory.
  • the mounting is: mounting the storage device according to a system command or a corresponding API;
  • the uninstallation is: unloading of the storage device according to a system command or a corresponding API.
  • An apparatus for implementing a mobile storage mount comprising: a first query unit, a second query unit, and a mount unit; wherein
  • the first query unit is configured to: periodically determine whether the storage device has a multimedia space within a predetermined duration, if the hot plug device determined according to the universal serial bus USB hot plug event is a storage device and is an insertion event;
  • the second query unit is configured to: when determining that there is a multimedia space and a storage space exists in the multimedia space, query a file system type of the storage space;
  • the mount unit is set to: mount the storage device according to the type of the file system that is queried.
  • the device further includes: a third query unit, configured to: when the first query unit does not query the storage device to have a multimedia space, create a new thread, and periodically query whether the storage device has a multimedia space.
  • a third query unit configured to: when there is a multimedia space and a storage space exists in the multimedia space, the second query unit and the mount unit are called to perform a mount operation.
  • the second query unit is configured to determine whether the storage device partition is determined according to the storage space name of the storage device when the multimedia space exists and the storage space exists in the multimedia space.
  • the storage space is a storage device partition, querying a file system type of the storage space according to the storage device partition name;
  • the file system type of the storage space is queried according to the storage space name.
  • the mounting unit is configured to:
  • the storage device partition is mounted to the specified directory according to the file system type that is queried;
  • the storage space is mounted to the specified directory according to the file system type that is queried.
  • the device further includes a prompt formatting unit, configured to prompt the user to perform a formatting process when the file system type of the storage space is not queried;
  • the formatting process includes: when the storage space is a storage device partition, formatting the storage device partition according to an external instruction, and continuing to mount the storage device partition to the specified directory; or
  • the storage space is formatted according to an external instruction, and the storage space is continuously mounted to the specified directory.
  • the device further includes a non-mounting processing unit, configured to: when the hot plug device is determined to be a storage device according to a USB hot plug event and is an uninstall event, uninstalling the storage device;
  • the mount is ended.
  • the device further includes a record update unit, configured to: after completing the mounting of the storage device, the serial record storage device mounting information is in a preset file or a shared memory, and is performed. Update.
  • the record update unit is configured to: serially record the mount information of the storage device to a preset file or a shared memory by using a single thread manner; or
  • a mutex Using a mutex, a read-write lock, or a semaphore to implement multi-threading, and/or multi-process serial recording of the storage device's mount information into a pre-configured file or shared memory.
  • the first query unit is configured to: match the device path information, the subsystem information, and the device name of the hot plug device according to the USB hot plug event with the identifier parameter of the storage device to obtain the
  • the hot plug device is a storage device, and is determined to be an insertion event according to the USB hot plug event, and periodically queries the storage device for the multimedia space within a predetermined time period.
  • the embodiment of the invention further provides a computer readable storage medium storing program instructions, which can be implemented when the program instructions are executed.
  • the mobile storage is connected to the Linux system, and the storage device is periodically queried for the multimedia space in the preset time period, so that the query of the multimedia space is prolonged, thereby avoiding the inconvenience that some mobile storage cannot be timely in the general process.
  • the problem of mounting the multimedia storage space is not possible.
  • the general-purpose process can only implement the mounting of the storage device partition, and the file system type of the storage space is used for mounting, thereby realizing the good mounting of the mobile storage under the Linux system. .
  • the problem that the mobile storage does not select the "large capacity mode" in time according to the general flow is solved. Recording the mount information by means of serial recording simplifies the process of querying the mount information by the upper layer of the Linux application.
  • FIG. 1 is a flowchart of a method for implementing mobile storage mounting according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of an apparatus for implementing terminal application switching according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for implementing a mobile storage mount according to an embodiment of the present invention. As shown in FIG. 1 , the method includes:
  • Step 100 When determining that the hot plug device is a storage device according to the USB hot plug event and is an insertion event, periodically query whether the storage device has a multimedia space within a predetermined duration;
  • the method of the embodiment of the present invention can also obtain the USB hot plug event before the USB hot plug event determination is performed.
  • the preset duration and the preset period are values obtained by those skilled in the art according to experience; for example, the preset duration is 5 to 10 s, and the preset duration is too long, which may affect the mounting of the next device; the preset period is 50 100ms, mainly considering efficiency.
  • the USB hot plug event is generated by the Linux system kernel and includes a series of corresponding events such as device path information, device name, storage device partition name, and subsystem.
  • the corresponding event refers to a message capable of describing the hardware and processes recognized by the Linux system.
  • Determining the hot plug device as a storage device according to the USB hot plug event includes: matching device path information, subsystem information, storage device partition name, and device name of the hot plug device according to the USB hot plug event with the identifier parameter of the storage device obtain.
  • the USB hot plug event is to provide the upper layer application registered to the kernel to obtain the kernel information.
  • the U disk is taken as an example.
  • the inserted name may be /dev/sdc
  • the storage device partition name may be /dev/sdc1.
  • the name is sdX or sdXy, where X is a letter and y is a number, such as sdc or sdc1", then it matches the identification parameter of the storage device, and is determined to be a storage device.
  • the method of the embodiment of the present invention further includes: creating a new thread, periodically querying whether the storage device has a multimedia space, and continuing to execute the query storage space when there is a multimedia space and a storage space exists in the multimedia space.
  • the steps of the file system type are: creating a new thread, periodically querying whether the storage device has a multimedia space, and continuing to execute the query storage space when there is a multimedia space and a storage space exists in the multimedia space.
  • the hot plug device When the hot plug device is a mobile device and does not select the "mass storage” mode at the appropriate time, it is processed by creating a new thread, performing periodic queries, periodically querying and processing the SD card through a new thread or The mounting of the virtual storage, this part can not be mounted through the general process, the user can select the "mass storage” mode at any time.
  • Step 101 When there is a multimedia space and a storage space exists in the multimedia space, query a file system type of the storage space.
  • the storage space is: a hardware storage port that can store files.
  • the hardware bank where files can be stored is: a space that can be formatted or formatted.
  • the storage device partition is a kind of storage space; for example, a new U disk that is not partitioned and directly formatted, under Linux with a device name (such as sdc, it has no storage device partition sdcx, x is a number) ) exists as storage space; a partition of a USB flash drive is also a storage space (such as sdc1).
  • the file system type of the storage space includes: determining whether the storage device partition is based on the storage space name of the storage space.
  • the file system type of the storage space is queried according to the storage device partition name
  • the file system type of the storage space is queried according to the storage space name of the storage space.
  • the multimedia space is mainly used to indicate whether the storage device can be used for storage. For example, if the mobile phone does not select the "mass storage" mode, the system considers that there is no multimedia space, and once the selection is completed, the system considers that there is multimedia space.
  • the multimedia space and the storage space exist in the hot plug device determined in step 100 and step 101 are obtained by directly querying the corresponding storage device by calling the underlying driver interface of the Linux system or related system commands, and the query result is four. Possible: device does not exist; device There is no multimedia space; the device has multimedia space, but no storage space; the device has multimedia space and storage space. After querying for storage space, update the Linux system kernel related records. For the U disk and the mobile hard disk, the query has the multimedia space and the storage space, and the query is only performed once, and can be executed without back and forth detection.
  • the feature of periodically querying the storage device for the presence of the multimedia space within a predetermined period of time is that it takes a long time to find the multimedia space and the storage space.
  • the device is an SD card
  • the feature of periodically querying whether the storage device has a multimedia space within a predetermined duration is represented by: finding the multimedia space, and triggering the system to give the storage device partition name. This process is not handled by the general process, that is, it solves the problem that the general process processes the hot plug event of the SD card.
  • the feature is as follows: the multimedia space and the storage space can be found. There is no storage device partition. The subsequent query file system and the mounting process can only be performed by the storage space name.
  • Step 102 Perform mounting of the storage device according to the type of the file system that is queried.
  • the mounting of the storage device according to the type of the file system that is queried includes:
  • the mounting of the storage device according to the type of the file system that is queried includes:
  • the storage device partition or the storage space is mounted to the specified directory according to the file system type by querying the file system type.
  • the storage space is processed and can be compatible with the general process, which is a good solution to the storage space and cannot be mounted.
  • the method of the present invention further includes: prompting the user to perform a formatting process
  • Formatting When the storage space is a storage device partition, format the storage device partition according to external instructions, and continue to mount the storage device partition to the specified directory; or,
  • the storage space is formatted according to an external instruction, and the storage space is continuously mounted to the specified directory.
  • the method of the embodiment of the present invention further includes: unloading the storage device, when determining that the hot plug device is a storage device according to the USB hot plug event and is an uninstall event;
  • the method of the embodiment of the present invention further includes: ending the mount.
  • the embodiment of the present invention allows the mobile storage to access the Linux through the USB through the processing of the unloading and non-storage devices. Even if the "mass storage" mode is not selected or the selection is incorrect, and the device is directly pulled out, the processing can be handled well.
  • the method of the embodiment of the present invention further includes: serially recording the mounting information of the storage device into a preset file or shared memory, and updating.
  • the mounting information of the serial recording storage device to the preset file or the shared memory specifically includes: serially recording the mounting information of the storage device to a preset file or shared memory by using a single thread manner ;or,
  • a mutex Using a mutex, a read-write lock, or a semaphore to implement multi-threading, and/or multi-process serial recording of the storage device's mount information into a pre-configured file or shared memory.
  • the U disk and the mobile hard disk will perform multimedia space recognition before querying the storage space, but this process is fast and generally cannot be seen.
  • the storage device partition query is performed only when there is a multimedia space. Therefore, when the mobile phone virtual storage and the SD card are accessed, the "large-capacity storage" is not selected at the appropriate time, and the Linux system cannot recognize the multimedia space, if only the If the multimedia space is not queried in a multimedia space query, the subsequent mounting process cannot be performed normally.
  • the invention connects the mobile storage to the Linux system and periodically queries whether the storage device has a multimedia space within a preset time period, so that the query of the multimedia space is prolonged, thereby avoiding the inability to timely identify the multimedia in the general process and part of the mobile storage.
  • the storage space cannot be mounted.
  • the more general process can only implement the storage device partition.
  • the load is implemented by the file system type of the storage space, and the good storage of the mobile storage under the Linux system is realized.
  • the problem that the mobile storage does not select the "large capacity mode" in time according to the general flow is solved by setting a new thread for querying the multimedia space. Recording the mount information by means of serial recording simplifies the process of querying the mount information by the upper layer of the Linux application.
  • the mounting is: mounting of the mobile storage according to the system command or the corresponding API; and the uninstalling is: uninstalling the mobile storage according to the system command or the corresponding API.
  • FIG. 2 is a structural block diagram of an apparatus for implementing mobile storage mounting according to the present invention. As shown in FIG. 2, the method includes:
  • the first query unit is configured to periodically query the storage device for the presence of the multimedia space within a predetermined duration, if the hot plug device determined according to the USB hot plug event is the storage device and is an insertion event.
  • the first query unit matches the device path information, the subsystem information, and the device name of the hot plug device according to the USB hot plug event with the identifier of the storage device to obtain the hot plug device as a storage device, and according to the The insertion event of the USB hot plug event determines whether the storage device has a multimedia space periodically within a predetermined time period.
  • a second query unit configured to query a file system type of the storage space when it is determined that there is a multimedia space and a storage space exists in the multimedia space;
  • the second query unit is configured to determine whether there is a multimedia space and the storage space exists in the multimedia space, and determine whether it is a storage device partition according to the device name of the storage space.
  • the file system type of the storage space is queried according to the storage device partition name
  • the file system type of the storage space is queried according to the storage space name of the storage space.
  • the mount unit is set to mount the storage device according to the type of the file system that is queried.
  • the device of the embodiment of the present invention further includes a third query unit, configured to: when the first query unit does not query the storage device to have a multimedia space, create a new thread, periodically query whether the storage device has a multimedia space, and when present When there is a multimedia space and a storage space exists in the multimedia space, the second query unit and the mount unit are called to perform a mount operation.
  • a third query unit configured to: when the first query unit does not query the storage device to have a multimedia space, create a new thread, periodically query whether the storage device has a multimedia space, and when present When there is a multimedia space and a storage space exists in the multimedia space, the second query unit and the mount unit are called to perform a mount operation.
  • the content of the second query unit and the mount unit can be directly implemented on the new thread.
  • the mount unit is set to,
  • the storage device partition is mounted to the specified directory according to the file system type that is queried;
  • the storage space is mounted to the specified directory according to the type of the file system that is queried.
  • the device of the embodiment of the present invention further includes a prompt formatting unit configured to prompt the user to perform formatting processing when the file system type of the storage space is not queried;
  • Formatting When the storage space is a storage device partition, format the storage device partition according to external instructions, and continue to mount the storage device partition to the specified directory; or,
  • the storage space is not a storage device partition, format the storage space according to external instructions and continue to mount the storage space to the specified directory.
  • the device of the embodiment of the present invention further includes a non-mounting processing unit, configured to: when determining that the hot plug device is a storage device according to the USB hot plug event and is an uninstall event, uninstalling the storage device;
  • the mount is ended.
  • the record update unit is set to update the mount information of the serial record storage device to a preset file or shared memory after the storage device is mounted.
  • the record update unit is configured to serially record the mount information of the storage device to a preset file or shared memory through a single-threaded manner;
  • a mutex Using a mutex, a read-write lock, or a semaphore to implement multi-threading, and/or multi-process serial recording of the storage device's mount information into a pre-configured file or shared memory.
  • Hot plug event via USB (generated by the Linux kernel), including device path information, The device name, the event of the storage device partition name information), the USB device is determined by whether the device path information includes “usb", and secondly, whether the subsystem information is "block” to determine the storage device, and finally, whether the device name is included "sd” to determine whether the system sees the device or partition as a SCSI device.
  • Read and write storage devices such as USB flash drives, mobile hard drives, mobile phone SD cards, and virtual storage are recognized by the system as SCSI devices, such as sdc, sdc1.
  • the embodiment of the present invention processes only the insertion event and the unloading event (or the extraction event).
  • For the insertion event of the storage device periodically query the storage device for the multimedia space within a predetermined duration
  • the multimedia space and storage space can be found for the first time; for the SD card or virtual storage of the mobile phone device, it depends on the timing of the user selecting the "mass storage” mode. If the user selects the "mass storage” mode before the general process determines that the mobile storage is completed before the storage device, it needs multiple searches to find the multimedia space, and generally does not need to establish a new thread to query the multimedia space.
  • the system will find that it only has multimedia space and no storage space, but it will trigger the system to generate new USB hot plug information, which gives the partition information of the SD card, so the old hot swap Information can be discarded, and new hot-plug information will be processed like a USB stick or a mobile hard drive.
  • the system will find multimedia space and storage space, which can directly query the file system. If the user chooses the "mass storage" mode when the timing is not appropriate, you need to create a new thread to query the multimedia space.
  • the storage device partition is determined according to the device name of the storage space.
  • the file system type of the storage space is queried according to the storage device partition name.
  • the file system type of the storage space is queried according to the storage space name of the storage space.
  • mount commands are used to achieve no garbled characters after the mount, and the partition is readable and writable.
  • the information is serially recorded by using a separate thread; or the multi-threaded, and/or multi-process serial record information is realized by using a read-write lock, a mutex lock, etc., and the information can be recorded to a file or a shared memory.
  • a file system U disk, mobile hard disk, mobile phone card and virtual storage can be automatically mounted. If there is no file system, the user is prompted to format on the system interface. If the user selects the file system for formatting, the formatted storage space will be triggered. If the formatting is successful, the mounting will continue according to the selected file system type.
  • serially recorded information is deleted when the uninstall is performed.
  • the hot plug event as the pull-out event, find the relevant storage device partition or storage space, directly call the uninstall command to uninstall the storage device partition or storage space. And according to the content of the event, such as the device name, storage device partition name, delete the corresponding mount information recorded before"
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the mobile storage is connected to the Linux system, and the storage device is periodically queried for the multimedia space in the preset time period, so that the query of the multimedia space is prolonged, thereby avoiding the inconvenience that some mobile storage cannot be timely in the general process. Identifying multimedia storage space and not being able to mount.

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Abstract

La présente invention concerne un dispositif et un procédé de montage de stockage mobile. Le procédé comprend les étapes consistant à : s'il est déterminé, en fonction d'un événement de connexion à chaud sur port USB, que le dispositif de connexion à chaud est un dispositif de stockage et que l'événement est un événement d'insertion, demander périodiquement pendant une période de temps prédéterminée s'il existe un espace multimédia sur le dispositif de stockage; s'il existe un tel espace et si un espace de stockage est disponible sur l'espace multimédia, demander le type du système de fichiers de l'espace de stockage; et monter le dispositif de stockage en fonction du type du système de fichiers déterminé par l'intermédiaire de la demande.
PCT/CN2015/074118 2014-10-23 2015-03-12 Dispositif et procédé de montage de stockage mobile Ceased WO2016061978A1 (fr)

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CN201410571607.5A CN105589657A (zh) 2014-10-23 2014-10-23 一种实现移动存储挂载的方法及装置
CN201410571607.5 2014-10-23

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CN113157647A (zh) * 2021-03-29 2021-07-23 普联技术有限公司 一种访问挂载文件的方法及装置

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