JP5056567B2 - Information processing device - Google Patents

Description

  The present invention provides information processing for recognizing both a non-USB storage device connected via an interface different from a USB (Universal Serial Bus) standard and a USB storage device connected to a USB port as a SCSI device. Relates to the device.

  Conventionally, in an information processing apparatus provided with a storage device, a program is generally read from a storage device such as a built-in hard disk device when the information processing apparatus is activated.

In addition, a technique for reading a program from an external storage device when the information processing apparatus is activated has been proposed (see, for example, Patent Document 1). In the technique described in Patent Document 1, a USB storage device is externally attached, a program is read from the USB storage device, and the information processing apparatus is activated.
JP 2006-331380 A

By the way, in the USB standard, a specification for performing data transmission with a USB storage device is a specification that follows the SCSI (Small Computer System Interface) standard internally. For this reason, some OS (Operating System) included in the information processing apparatus recognizes the USB storage device as described above as a SCSI device and assigns a drive name corresponding to the SCSI device.

  In addition to the USB storage device, some storage devices are recognized as SCSI devices. As a typical example, for example, standards such as serial ATA (Advanced Technology Attachment) and IEEE (Institute of Electrical and Electronic Engineers) 1394 are internally based on the SCSI standard. Therefore, a storage device connected via an interface compliant with these standards is recognized as a SCSI device, and a drive name corresponding to the SCSI device is assigned.

  Furthermore, since a storage device that conforms to a SCSI standard such as SCSI-2 or SCSI-3 is naturally recognized as a SCSI device, a drive name corresponding to the SCSI device is assigned.

  That is, depending on the OS provided in the information processing apparatus, drive names corresponding to SCSI devices are assigned to various storage devices. Of these storage devices recognized as SCSI devices, storage devices connected via the “interface of a standard different from the USB standard” as described above are referred to as “non-USB storage devices” in this specification. ".

  However, if an information processing apparatus that assigns drive names corresponding to SCSI devices to various storage devices as described above adopts a configuration in which a program is read from a non-USB storage device at startup, the following problems may occur. There is.

  That is, the program to be read from the non-USB storage device at the time of startup and the file system in which the program is stored are normally specified by a path name including a drive name assigned to the non-USB storage device.

  Here, if the information processing apparatus adopts a configuration including only a single non-USB storage device, the drive names corresponding to the SCSI devices assigned to the non-USB storage device are always the same. Therefore, in this case, the intended file system and program can be accessed using the path name including the drive name.

  However, if a USB storage device is connected to the USB port provided in the information processing apparatus as described above, a drive name corresponding to the SCSI device is also assigned to this USB storage device.

  Therefore, even if a program or file system is specified with a path name including the drive name as described above, the drive name may be assigned to the USB storage device.

  For example, when a non-USB storage device fails, the USB storage device is recognized without being recognized. In this case, the drive name that should have been assigned to the non-USB storage device may be assigned to the USB storage device.

  In this case, if a program or file system having the same path name as the designated path name also exists on the USB storage device, the program is read from the USB storage device.

  Therefore, when a non-USB storage device fails, an unexpected program is read from an unexpected USB storage device, which may cause the information processing apparatus to execute unnecessary processing. Further, for example, if the program prepared on the USB storage device is an unauthorized program prepared maliciously, such an unauthorized program may be executed.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a non-USB storage device and an information processing apparatus that recognizes a USB storage device connected to a USB port as a SCSI device, and is not In the case of adopting a configuration in which a program is read from a USB storage device, the program is prevented from being erroneously read from an unexpected USB storage device.

Hereinafter, the configuration employed in the present invention will be described.
The information processing apparatus according to claim 1 includes a non-USB storage device connected via an interface having a standard different from a USB (Universal Serial Bus) standard, and a USB port to which the USB storage device can be connected, An information processing apparatus for recognizing a non-USB storage device and a USB storage device connected to the USB port as a SCSI (Small Computer System Interface) device, the USB storage connected to the non-USB storage device or the USB port A data transmission interface generating means for generating a logical data transmission interface for performing data transmission with the detected device in accordance with a SCSI standard upon detection of the device, and the data transmission interface generating means In And a drive name assigning means for assigning a unique drive name to a device accessible via the data transmission interface each time the generated data transmission interface is detected by the drive name assigning means. A device type determination unit that determines whether the allocated drive name is a device name determined in advance and determines whether the determination target is the non-USB storage device, and the device type determination unit When it is determined that the determination target is the non-USB storage device, a first mount unit that mounts a first file system on the non-USB storage device at a predetermined mount point; and First file system A mount result determining means for determining whether or not the mounting of the first file system is successful by the mount result determining means and determining whether or not the mounting of the first file system is successful. A process execution unit that reads a program and executes processing based on the program, and the device type determination unit determines that the target device is not the non-USB storage device, or the mount result determination unit Second mounting means for mounting a second file system on the USB storage device connected to the USB port at the predetermined mount point when it is determined that mounting of the first file system has failed; The process execution means includes the When the second file system is mounted at the predetermined mount point by the second mounting means, a program is read from a file group under the mount point, and processing based on the program is executed.

  In this information processing apparatus, as described above, the non-USB storage device is a storage device that is recognized as a SCSI device by the information processing apparatus and connected to the information processing apparatus via an interface of a standard different from the USB standard. That's it. Examples of the “standard different from the USB standard” include standards such as serial ATA, IEEE 1394, and SCSI.

  On the other hand, in this information processing apparatus, a USB storage device is recognized as a USB mass storage class device from the control unit side of the information processing apparatus when connected to a USB port.

  In the information processing apparatus configured as described above, when the information processing apparatus is activated, first, when the data transmission interface generation unit detects a USB storage device connected to a non-USB storage device or a USB port, the detected device A logical data transmission interface is generated for performing data transmission between the two in accordance with the SCSI standard. As a result, the information processing apparatus recognizes both the non-USB storage device and the USB storage device as SCSI devices, and thereafter can perform data transmission by a method compliant with the SCSI standard.

  The logical data transmission interface generated here includes a SCSI interface virtually generated only by software on the information processing apparatus, hardware installed in the information processing apparatus, and software on the information processing apparatus. Any one that realizes a function as a SCSI interface in cooperation with each other may be used.

  When the data transmission interface is generated by the data transmission interface generation unit, the drive name allocation unit detects a device accessible via the data transmission interface every time the data transmission interface is detected. Assign a unique drive name.

  For example, when the OS of the information processing apparatus is Linux (registered trademark), the information processing apparatus performs “sda”, “sdb” with respect to the non-USB storage device and the USB storage device when the apparatus is activated. “,“ Sdc ”,... Are assigned drive names. These drive name assignment processes are executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this corresponds to drive name assignment means in the present invention.

  However, the drive name assigning means assigns a drive name as a SCSI device without distinguishing between a non-USB storage device and a USB storage device. For this reason, when a USB storage device is not connected, a predetermined drive name is assigned to the non-USB storage device. However, if a USB storage device is connected, the non-USB storage device is assigned in advance. The drive name is not always assigned.

  In particular, when the information processing apparatus cannot recognize the non-USB storage device, such as when the non-USB storage device has failed, there is a possibility that a predetermined drive name is assigned to the USB storage device.

  Therefore, in the above information processing apparatus, the device type determination unit determines whether the determination target is a non-USB storage device with a device whose drive name assigned by the drive name allocation unit is a predetermined drive name as a determination target. Determine. Such a device type determination process is also executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this corresponds to a device type determination unit in the present invention.

  The first mount unit mounts the first file system on the non-USB storage device at a predetermined mount point when the device type determination unit determines that the determination target is a non-USB storage device.

  For example, when the OS of the information processing apparatus is Linux (registered trademark), the file system name on the non-USB storage device to which the drive name “sda” is assigned is “sda1”, “Sda2”, “sda3”,...

  Therefore, in the information processing apparatus, when the file system that exists on the non-USB storage device is prepared as designed, the first file system (for example, “sda1”) is used by using the drive name (for example, “sda”). Can be specified). If the first file system can be specified, the first file system (for example, “sda1”) can be mounted on a predetermined mount point (for example, “/ main”). Such a mounting process is also executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this is a configuration corresponding to the first mounting means in the present invention.

  Subsequently, the information processing apparatus executes processing for determining whether or not the first file system has been successfully mounted. This mount result determination process is also executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this corresponds to the mount result determination means in the present invention.

  As a result of this determination, if it is determined that the mounting is successful, the control unit of the information processing apparatus is in a state where it can access the file group on the first file system under the mount point.

  Therefore, when the first file system is mounted on the mount point by the first mount unit, the control unit of the information processing apparatus reads a program from the file group under the mount point and executes processing based on the program. This processing is also executed by a control unit centering on the CPU or the like provided in the information processing apparatus, and this corresponds to the processing execution means in the present invention.

  According to the information processing apparatus that operates as described above, when the device with the predetermined drive name is a non-USB storage device, the first mounting means is the first device on the non-USB storage device. One file system is mounted, and various processes are started from the first file system.

  On the other hand, if a predetermined drive name is assigned to the USB storage device, the first mounting means does not mount the file system on the USB storage device.

  Therefore, even if a predetermined drive name is assigned to an unexpected USB storage device, there is no problem that a program is erroneously read from such an unexpected USB storage device.

  By the way, in the information processing apparatus described above, if a predetermined drive name is not assigned to the non-USB storage device, there may be some problem in the information processing apparatus. In that case, it is possible to cancel the activation of the information processing apparatus as it is, but if such a countermeasure is taken, the program cannot be read from the file group under the mount point, and the information processing apparatus Processing based on the program cannot be executed.

  In this regard, the information processing apparatus of the present invention performs activation from a USB storage device (hereinafter referred to as emergency activation) when activation from a non-USB storage device (hereinafter referred to as normal activation) fails. Therefore, it is possible to improve the reliability of the information processing apparatus.

  That is, the information processing apparatus according to the present invention fails to mount the first file system when the device type determination unit determines that the target device is not the non-USB storage device, or the mount result determination unit A second mount unit that mounts the second file system on the USB storage device connected to the USB port at the predetermined mount point when it is determined that the processing execution unit includes the process execution unit, When the second file system is mounted at the predetermined mount point by the second mounting means, a program is read from a file group under the mount point, and processing based on the program is executed.

  In this information processing apparatus, even if the device with the predetermined drive name is not a non-USB storage device or when the first file system has failed to be mounted, the second mounting means Mount the second file system on the storage device. Such a mounting process is also executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this corresponds to the second mounting means in the present invention.

  According to the information processing apparatus configured as described above, various processes can be normally started from the first file system. On the other hand, when the first file system mount fails due to some cause (for example, failure). The alternative process for emergency can be activated from the second file system.

  Now, as described above, in the case where various processes can be started from the second file system on the USB storage device at the time of emergency startup, if there are a plurality of USB storage devices, the order in which the plurality of USB storage devices are recognized. Is also left to the OS of the information processing apparatus. Therefore, the drive name may be changed depending on the recognition order. In particular, in the case of a USB storage device that can be easily inserted and removed, there is a high possibility that the information is added to or deleted from the information processing apparatus, and the drive name is likely to change accordingly.

  Therefore, even if you decide the drive name assigned to the USB storage device and specify the file system and file that you want to access in the emergency start with the path name using it, the drive name will fluctuate, The file system or file may become inaccessible.

  Therefore, in order to deal with such a problem, the following configuration may be employed. That is, the information processing apparatus of the present invention includes a plurality of the USB ports, and at least one of the plurality of USB ports is an administrator USB port that can be used only by an administrator, and the remaining USB ports. The port is a general USB port that can be used by non-administrators, and a drive that acquires the drive name assigned by the drive name assigning unit to the USB storage device connected to the administrator USB port Name acquisition means, and the second mount means uses the drive name acquired by the drive name acquisition means and uses the drive name acquired on the USB storage device connected to the administrator USB port. The file system is specified, and the specified second file system is set to the predetermined file system. Is mounted on a mount point, it is preferable to adopt a configuration that.

  In this information processing apparatus, the drive name acquisition means acquires the drive name assigned by the drive name assignment means to the USB storage device connected to the administrator USB port. The reason why such drive name acquisition means is adopted is that it is uncertain what drive name the drive name assignment means assigns to the USB storage device connected to the administrator USB port.

  This will also be described with a specific example. For example, when the OS of the information processing apparatus is Linux (registered trademark), the USB storage device has “sda”, “sdb”, “ Drive names such as “sdc”,... are assigned.

  In the information processing apparatus, a USB storage device is connected to the administrator USB port, and a second file system is prepared on the USB storage device. Therefore, only when there is no other USB storage device, for example, the drive name of the USB storage device connected to the administrator USB port is determined as “sda”. Therefore, for example, when the first file system is the target, the second file system should be “sda1”, and the second file system can be specified.

  However, when a USB storage device is also connected to the general USB port, which of the above drive names such as “sda”, “sdb”, “sdc”,... Is connected to the administrator USB port. Whether the assigned USB storage device is assigned is undefined. Of course, it is undefined which is assigned to the USB storage device connected to the general USB port.

  Therefore, in the information processing apparatus of the present invention, when the device type determination unit determines that the target device is not a non-USB storage device, the mount result determination unit determines that the mounting of the first file system has failed. In this case, first, a process for acquiring the drive name assigned by the drive name assigning means to the USB storage device connected to the administrator USB port is executed. This process is also executed by a control unit centered on a CPU or the like provided in the information processing apparatus, and this corresponds to a drive name acquisition unit in the present invention.

  If the drive name “sda” of the USB storage device connected to the administrator USB port can be acquired by such a drive name acquisition unit, for example, when the first file system is the target, the second file system is “sda1”. Can be identified. If the drive name “sdb” can be acquired, for example, if the first file system is the target, the second file system can be specified as “sdb1”.

  Therefore, the information processing apparatus can execute a process of mounting the second file system (for example, “sda1”) specified as described above on a predetermined mount point (for example, “/ main”).

  Then, when the second file system is mounted on the mount point by the second mount unit, the control unit of the information processing apparatus reads a program from the file group under the mount point and executes processing based on the program. This process is equivalent to the process when the first file system is mounted, and corresponds to the process execution means referred to in the present invention as described above.

  According to the information processing apparatus as described above, when there are a plurality of USB storage devices, their drive names are undefined, but the USB storage connected to the administrator USB port by the drive name acquisition means You can get the drive name assigned to the device. In addition, the second mount unit can appropriately identify the second file system on the USB storage device connected to the administrator USB port by using the drive name acquired by the drive name acquisition unit. .

  Therefore, the second mount unit can mount an appropriate second file system at a predetermined mount point, and erroneously mounts the file system on the USB storage device connected to other than the administrator USB port. There is nothing.

  Therefore, after the appropriate second file system is mounted, the process execution means can read the program from the file group under the mount point and execute the process based on the program. Therefore, it is possible to prevent troubles such as a necessary file not being read or an inappropriate file being read.

Next, the information processing apparatus of the present invention, the detects a USB storage device connected to the USB port, the data transmission interface information relating to the USB storage device information publishing interface for accessing information about And a drive name assigning means for assigning to the USB storage device to be accessed when accessing the USB storage device via the data transmission interface. By transmitting the drive name to the data transmission interface, the drive name is stored in a storage area included in the data transmission interface, and the drive name acquisition unit is configured to store the information disclosure interface. A configuration in which information stored in a storage area included in the data transmission interface is read via the interface, and information indicating a correspondence relationship between the administrator USB port and the drive name is acquired from the read information. May be adopted.

  According to the information processing apparatus configured as described above, when accessing the USB storage device via the data transmission interface, the drive name assigned to the USB storage device is stored in the storage area of the data transmission interface. Is done.

  Therefore, when the drive name acquisition unit acquires information via the information disclosure interface, it is possible to acquire drive name information in addition to the information related to the data transmission interface and the USB storage device. Thereby, it is possible to easily grasp the correspondence between the administrator USB port and the drive name.

  More specifically, for example, when the OS of the information processing apparatus is Linux (registered trademark), when a USB storage device is detected, a virtual data transmission interface used when accessing the USB storage device (SCSI host adapter) is generated.

  Also, an information disclosure interface (a pseudo file under the / proc file system) for accessing information related to the data transmission interface and the USB storage device is generated. The process of generating these is executed for each USB storage device.

  The drive name assigning unit described above executes a process of assigning a drive name to a USB storage device accessible via the data transmission interface every time a virtual data transmission interface is detected.

  However, in the case of general Linux (registered trademark), when accessing a USB storage device via the data transmission interface, the drive name assigned to the USB storage device to be accessed is transmitted to the data transmission interface. It will never be done. Therefore, the drive name is not stored in the storage area provided in the data transmission interface.

  Therefore, in the case of a general Linux (registered trademark), a data transmission interface corresponding to the drive name can be specified, but a drive name corresponding to the data transmission interface cannot be specified based on the data transmission interface. It is a specification. In the case of general Linux (registered trademark), the drive name (for example, “sda”) of the USB storage device corresponding to the data transmission interface corresponding to the USB port for administrator in the present invention is set. It means that the specification cannot be specified.

  In this regard, in the case of the information processing apparatus as described above, as described above, when accessing the USB storage device via the data transmission interface, the drive name assigned to the USB storage device to be accessed is the data The data is stored in a storage area included in the transmission interface.

  Therefore, the drive name stored in the storage area is read from the storage area provided in the data transmission interface corresponding to the administrator USB port, and the desired drive name or file system name is determined based on the drive name. It can be identified.

  Incidentally, in the case of a general SCSI interface, a plurality of storage devices may be connected to a single SCSI interface. Therefore, even if the drive name is stored in the storage area of the SCSI interface as described above, the one-to-one relationship between the data transmission interface and the storage device cannot be specified.

  However, the virtual data transmission interface generated when the USB storage device is connected has a one-to-one relationship between the data transmission interface and the USB storage device. Therefore, if the drive name is stored in the storage area of the data transmission interface as described above, it can be specified that the drive name is assigned to the “USB storage device having a one-to-one relationship”.

  Next, in the information processing apparatus of the present invention, the drive name assigning unit is defined in the SCSI standard in order to obtain information on the capacity of the USB storage device after assigning the drive name to the USB storage device. Adopts a configuration in which a read capacity command, which is one type of SCSI command issued, is issued, and the drive name is transmitted to the data transmission interface during processing corresponding to the read capacity command. May be.

  In this information processing apparatus, acquisition of information regarding the capacity of a USB storage device is an essential process after device recognition. In the case of a USB storage device that is internally compliant with the SCSI standard, a read capacity command must be obtained. Is issued.

  Therefore, if the drive name is transmitted to the data transmission interface in the process executed when the read capacity command is issued, for example, a dedicated command for transmitting the drive name to the data transmission interface is provided. There is no need to take measures such as establishing a new one. In addition, with respect to the existing processing that has issued the read capacity command, a new function is added only by issuing the read capacity command without any modification.

  Furthermore, in the information processing apparatus according to the present invention, the drive name acquisition unit sequentially reads out information for all the USB storage devices that can acquire information via the information disclosure interface, It is determined whether the information related to the USB port included in the information is information corresponding to the predetermined administrator USB port, and if the information is information corresponding to the administrator USB port, You may employ | adopt the structure of acquiring the said drive name contained.

  According to the information processing apparatus configured as described above, even when there are a plurality of USB storage devices, it is possible to select the drive name corresponding to the administrator USB port while reading the information as processing targets in order. it can.

  In addition, in the information processing apparatus of the present invention, the administrator USB port is housed inside the housing of the information processing apparatus, and a USB device can be inserted and removed when a panel included in the housing is opened. The general USB port is exposed to the outside of the housing, and the USB device can be inserted and removed without opening the panel. .

  According to the information processing apparatus configured as described above, the administrator USB port is in a place where the USB device cannot be inserted or removed unless the panel is opened. It is possible to prevent the USB device from being attached to the computer.

The information processing apparatus of the present invention further includes a non-USB storage device connected via an interface having a standard different from the USB (Universal Serial Bus) standard, and a USB port to which the USB storage device can be connected. An information processing apparatus for recognizing a USB storage device and a USB storage device connected to the USB port as a SCSI (Small Computer System Interface) device, the USB storage device connected to the non-USB storage device or the USB port The data transmission interface generating means for generating a logical data transmission interface for performing data transmission with the detected device in accordance with the SCSI standard, and the data transmission interface generating means. Each for detecting said data transmission interface generated I, the drive letter assignment means against accessible devices, assigns a unique drive letter via the data transmission interface,
A device type determination unit that determines whether or not the determination target is the non-USB storage device with a device whose drive name assigned by the drive name allocation unit is a predetermined drive name as a determination target; A first mount unit that mounts a first file system on the non-USB storage device at a predetermined mount point when the device type determination unit determines that the determination target is the non-USB storage device; A mount result determining means for determining whether or not the first mount means has successfully mounted the first file system; and when the mount result determining means determines that the first file system has been successfully mounted, The file under the mount point Reading the program from Le group, a process execution means for executing processing based on the program, upon detecting the USB storage device connected to the USB port, and information relating to the information about the data transmission interface USB storage device An information disclosure interface generating means for generating an information disclosure interface for accessing the device, and the drive name assigning means, when accessing the USB storage device via the data transmission interface, By transferring the drive name assigned to the USB storage device to the data transmission interface, the drive name is stored in a storage area of the data transmission interface. The device type determination unit reads information stored in a storage area included in the data transmission interface via the information disclosure interface, and determines the correspondence between the USB port and the drive name from the read information. Information is obtained, and when the information about the determination target does not exist in the acquired information, it is determined that the determination target is the non-USB storage device.

  In the information processing apparatus configured as described above, when accessing the USB storage device via the data transmission interface, the drive name assigned to the USB storage device is stored in the storage area of the data transmission interface. The

  Therefore, when the device type determination means acquires information via the information disclosure interface, it can also acquire information on the drive name in addition to information on the data transmission interface and the USB storage device. You can see the correspondence with names.

Therefore, when there is no information about the determination target in the acquired information, it is possible to determine that the determination target is a non-USB storage device.
In the information processing apparatus according to the present invention, the drive name assigning unit is defined by a SCSI standard in order to obtain information on the capacity of the USB storage device after assigning the drive name to the USB storage device. A read capacity command, which is a kind of SCSI command, is issued, and the drive name is transmitted to the data transmission interface in the processing corresponding to the read capacity command. May be.

  In this information processing apparatus, acquisition of information regarding the capacity of a USB storage device is an essential process after device recognition. In the case of a USB storage device that is internally compliant with the SCSI standard, a read capacity command must be obtained. Is issued.

  Therefore, if the drive name is transmitted to the data transmission interface in the process executed when the read capacity command is issued, for example, a dedicated command for transmitting the drive name to the data transmission interface is provided. There is no need to take measures such as establishing a new one. In addition, with respect to the existing processing that has issued the read capacity command, a new function is added only by issuing the read capacity command without any modification.

Next, an embodiment of the present invention will be described with an example.
[Internal structure of information processing device]
FIG. 1 is a block diagram showing an internal structure of an information processing apparatus 1 exemplified as an embodiment of the present invention.

  The information processing device 1 described below is a device dedicated to a specific function that is configured so that a specific function included in the information processing device 1 is operated by automatically executing a predetermined program group after the power is turned on. is there. More specifically, in the case of the present embodiment, the information processing apparatus 1 is configured as a karaoke commander, and various functions are operated as a karaoke commander by automatically executing a predetermined program group after the power is turned on. Is configured to do. In this respect, the program to be executed is different from a general-purpose device such as a personal computer in which a program to be executed can be arbitrarily changed according to a user's operation.

  The information processing apparatus 1 includes a CPU 11, a ROM 13, a RAM 15, a hard disk device 17, a USB interface 20, and the like. The USB interface 20 includes one internal USB port 21 and two external USB ports 22 and 23, and a USB storage device 25 is connected to the internal USB port 21. That is, the information processing apparatus 1 includes the hard disk device 17 and the USB storage device 25, and these two types of storage devices.

  Among these, the hard disk device 17 is connected through a built-in interface of the serial ATA method, and when the information processing apparatus 1 is started, a program stored in the hard disk device 17 is usually read. Further, as will be described in detail later, when the program cannot be read from the hard disk device 17, the program stored in the USB storage device 25 is read as an alternative. That is, the hard disk device 17 is used during normal startup, and the USB storage device 25 is used in an emergency where normal startup is not possible.

  Further, the information processing apparatus 1 includes a housing 31, and the CPU 11, ROM 13, RAM 15, hard disk device 17, and the like are housed inside the housing 31. Of the USB interface 20, the internal USB port 21 is housed inside the housing 31, while the external USB ports 22 and 23 are exposed to the outside of the housing 31.

  The housing 31 is provided with an opening 33, and the opening 33 is closed by a panel 35. The panel 35 is fixed to the housing 31 by a fixing tool 37, and the fixing tool 37 has a structure that can be removed only when a dedicated jig (not shown) is used.

  Only the administrator who has the dedicated jig can remove the fixture 37 and open the panel 35, and only the administrator can directly touch the device built in the housing 31. Therefore, only the administrator can perform insertion / removal of the USB storage device 25 connected to the internal USB port 21. On the other hand, the external USB ports 22 and 23 are exposed to the outside of the housing 31 as described above, and various USB devices can be arbitrarily inserted and removed even by general users other than the administrator.

  That is, the internal USB port 21 is an administrator USB port that can be used only by an administrator, and the external USB ports 22 and 23 are general USB ports that can be used by non-administrators. .

  Furthermore, in order to control these hardware, the information processing apparatus 1 is equipped with an OS. In this embodiment, Linux (registered trademark) is installed as the OS. However, since only functions provided in general Linux (registered trademark) do not have sufficient functions necessary for carrying out the present invention, some unique functions are added. The specific contents of this additional function will be described in detail later, but descriptions of other functions that are not different from general Linux (registered trademark) will be omitted.

[Processes executed when the information processing device starts]
Next, processing executed when the information processing apparatus 1 is activated will be described.
FIG. 2 is a flowchart of processing executed when the information processing apparatus 1 is turned on.

  When the information processing apparatus 1 is turned on, the information processing apparatus 1 first loads the OS kernel into the memory of the CPU 11 (S105). The OS kernel is stored in the ROM 13, and in S105, the CPU 11 secures a part of the RAM 15 as a RAM disk and loads the kernel onto the RAM disk. As a result, the RAM disk becomes a root volume, the OS is started, and at least some of the functions of the OS start to operate.

  Subsequently, the information processing apparatus 1 starts SCSI drive connection monitoring (S115). In the present embodiment, in S115, the SCSI drive connection monitoring process is started. Thereafter, the process stays resident until the information processing apparatus 1 is turned off. Connect / disconnect is monitored.

The details of the SCSI drive connection monitoring process are as shown in FIG.
That is, when “intra-OS SCSI drive connection monitoring” shown in FIG. 3 is started, the information processing apparatus 1 first initializes the “SCSI-I / F connection table (hereinafter referred to as SITB)” (S205). ). The SITB is a table for registering a SCSI interface (hereinafter referred to as SCSI-I / F) that is currently connected in the information processing apparatus 1. In S205, for example, when there is a SCSI-I / F mounted as hardware, processing for registering SCSI-I / F information corresponding to the data transmission interface in the SITB is executed.

  If there is a drive connected to the I / F registered in S205, the drive is registered in the system (S210). By this S210, drive names such as “sda”, “sdb”,... Are assigned to the registered drives.

  Subsequently, the information processing apparatus 1 determines whether or not a certain time (for example, 6 seconds) has elapsed (S215). If it has not elapsed (S215: No), the process returns to S215, and the time elapses. wait. When a certain time has elapsed (S215: Yes), the currently connected SCSI-I / F is confirmed (S220).

  Thereafter, the information processing apparatus 1 determines whether or not there is a newly connected SCSI-I / F (S225). If there is no newly connected SCSI-I / F (S225: none), the currently disconnected SCSI-I The presence / absence of I / F is determined (S230). If there is no SCSI-I / F disconnected this time (S230: No), the process returns to S215. As a result, S215 to S230 are repeatedly executed approximately every 6 seconds.

  Then, when such a repetitive process of S215 to S230 is executed, if there is a newly connected SCSI-I / F (S225: present), the information processing apparatus 1 determines that the new SCSI-I / F Is registered in the above-mentioned SITB, and the drive connected to the I / F is registered in the system (S235).

  By this S235, drive names such as “sda”, “sdb”,... Are assigned to the registered drives. Further, since information on the capacity of the drive is also required at the time of registering the drive, a read capacity command, which is one type of SCSI command defined by the SCSI standard, is issued in order to acquire the information.

  At this time, in the information processing apparatus 1, the drive name for which the read capacity command is issued is stored in a storage area prepared for each SCSI-I / F. Such a process is a special process that is not performed in general Linux (registered trademark), and is a process unique to the information processing apparatus 1.

  Incidentally, when a plurality of SCSI drives are connected to one SCSI-I / F, the above-described read capacity command is sequentially issued to the plurality of SCSI drives. For this reason, the drive name for which the read capacity command is issued also changes in order, so that the drive for which the last read capacity command is issued is stored in the storage area prepared for each SCSI-I / F. The name will be stored.

  However, if one SCSI drive is connected to one SCSI-I / F, the above-described read capacity command is issued only to one SCSI drive. Therefore, the drive name for which the read capacity command is issued does not change, and the drive name connected to the SCSI-I / F is stored in the storage area prepared for each SCSI-I / F. It will be.

  When S235 is completed, the information processing apparatus 1 determines whether or not the processing of all the SCSI-I / Fs connected this time has been completed (S240), and if not completed (S240: No, the next I / F F)), returning to S235, S235 is repeated for the remaining SCSI-I / F. When all SCSI-I / F processes connected this time are completed (S240: Yes), the process proceeds to S230.

  In addition, when the SCSI-I / F that is disconnected this time is present while the repetition processing of S215 to S230 is performed (S230: Yes), the information processing apparatus 1 transmits the disconnected SCSI-I / F from SITB. The drive connected to the I / F is deleted from the system (S245). By this S245, the drive name corresponding to the deleted drive disappears from the system.

  Then, the information processing apparatus 1 determines whether or not the processing of all the SCSI-I / Fs that have been disconnected this time has ended (S250), and if it has not ended (S250: No to the next I / F), S245 By returning to step S245, S245 is repeated for the remaining SCSI-I / F. When the processing of all the SCSI-I / Fs disconnected this time is completed (S240: Yes), the process returns to S215.

  Now, the process as described above is a process started by S115, but here, returning to FIG. 2 again, the description from the point of time when S115 is completed will be continued. When S115 is completed, in the information processing apparatus 1, if the hard disk device 17 connected by the serial ATA method is functioning normally (S117: Yes), the hard disk device 17 is recognized as a SCSI drive (S118). At this stage of S118, a drive name is assigned to the hard disk device 17, and in the present embodiment, the drive name of the hard disk device 17 is “sda”. If the hard disk device 17 is not functioning normally (S117: No), the hard disk device 17 remains unrecognized as a SCSI drive.

  In the information processing apparatus 1, USB connection monitoring is started (S120). In the case of this embodiment, in this S120, the USB connection monitoring process is started, and after that, the process stays resident until the information processing apparatus 1 is turned off. Connect / disconnect is monitored.

The details of the USB connection monitoring process are as shown in FIG.
That is, when “in-OS USB connection monitoring” shown in FIG. 3 is started, the information processing apparatus 1 first initializes a “USB device connection table (hereinafter referred to as UDTB)” (S305). The UDTB is a table for registering the currently connected USB device in the information processing apparatus 1. In S305, the USB device is handled as being in a state where nothing is connected.

  Subsequently, the information processing apparatus 1 determines whether or not a certain time (for example, 100 milliseconds) has elapsed (S315). If it has not elapsed (S315: No), the process returns to S315, and the time has elapsed. Wait for. When a certain time has elapsed (S315: Yes), the currently connected USB device is confirmed (S320).

  Thereafter, the information processing apparatus 1 determines whether or not there is a newly connected USB device (S325), and if there is no newly connected USB device (S325: no), determines whether or not there is a USB device that has been disconnected this time. (S330). If there is no USB device disconnected this time (S330: No), the process returns to S315. As a result, S315 to S330 are repeatedly executed approximately every 6 seconds.

  Then, when such a repetitive process of S315 to S330 is executed, if there is a newly connected USB device (S325: present), the information processing apparatus 1 registers the new USB device in the UDTB described above. The device driver is registered in the system (S335). This S335 is a process as shown in detail in FIG.

  That is, as shown in FIG. 5, the information processing apparatus 1 first determines the type of the USB device (S405). If it is determined that the device is a USB storage class device (S405: USB storage class), a virtual SCSI-I / F (virtual SCSI host adapter) corresponding to an interface for data transmission to the USB storage device is used in the system. It is registered and a symbol of “SCSIm” is given from the system (S410). Note that “m” in the “SCSIm” is a serial number from “0”, and is a number that is reused after disconnection.

  Further, the information processing apparatus 1 receives the information disclosure unit in “/ proc / scsi / usb-storage” as a system registration and is given the symbol “/ proc / scsi / usb-storage / n” from the system (S415). Note that “n” in the above “/ proc / scsi / usb-storage / n” is a serial number from “0”, which is a number that is not reused after cutting.

  On the other hand, if it is determined in S405 that the device is a device other than the USB storage class (S405: other than the USB storage class), the information processing apparatus 1 performs a registration process for each USB device (S420). The process of S420 can be divided into several processes depending on the type of the USB device, but the details of this process are not the main part of the present invention, and thus further explanation is omitted.

  When the processing of S405 to S420 as described above (see FIG. 5) is finished, S335 shown in FIG. 4 is finished. In this case, the information processing apparatus 1 performs processing for all the USB devices connected this time. It is determined whether or not the processing has been completed (S340).

Here, if the processing of all the USB devices connected this time has not been completed (S340: No, to the next I / F), the process returns to S335, and S335 is repeated for the remaining USB devices. When the processing of all USB devices connected this time is completed (S340: Yes), the process proceeds to S330.

  Further, when the USB device disconnected this time is present (S330: Yes) while the repetitive processing of S315 to S330 is performed, the information processing apparatus 1 deletes the disconnected USB device from the UDTB, and the I / O The drive connected to F is deleted from the system (S345). This S345 is a process as shown in detail in FIG.

  That is, as shown in FIG. 6, the information processing apparatus 1 first determines the type of the USB device (S505). If it is determined that the device is a USB storage class device (S505: USB storage class), the information disclosing means of “/ proc / scsi / usb-storage / n” is deleted from the system (S510). As already explained, this number “n” is never reused.

  Also, the virtual SCSI-I / F (virtual SCSI host adapter) of “SCSIm” is deleted from the system (S515). As already described, the number “m” may be reused as necessary.

  On the other hand, if it is determined in S505 that the device is a device other than the USB storage class (S505: other than the USB storage class), the information processing apparatus 1 performs a deletion process for each USB device (S520). The process of S520 is divided into several processes depending on the type of the USB device, but the details of this process are not the main part of the present invention, and thus further explanation is omitted.

  When the processes of S505 to S520 as described above (see FIG. 6) are finished, S345 shown in FIG. 4 is finished. In this case, the information processing apparatus 1 performs the process for all the USB devices that have been disconnected this time. It is determined whether or not the processing has been completed (S350). Here, if the processing of all the USB devices disconnected this time has not been completed (S350: No, to the next I / F), the process returns to S345, and S345 is repeated for the remaining USB devices. When the processing of all the USB devices disconnected this time is completed (S340: Yes), the process returns to S315.

  Now, the process as described above is a process started by S120. Here, it returns to FIG. 2 again, and the description from the time when S120 is finished is continued. When S120 ends, the information processing apparatus 1 recognizes all connected USB devices when the power is turned on (S125). This recognition is performed because the USB connection monitoring process is started in S120.

  If there is a USB storage device among the recognized USB devices, the drive existing therein is recognized as a SCSI drive (S130). Such recognition is performed because the SCSI drive connection monitoring process is started in S115.

  Subsequently, in the information processing apparatus 1, the initialization of the kernel is terminated, and the first script is executed (S135). Then, mount processing of the volume used in the main is executed (S140).

  This S140 is a process as shown in detail in FIG. That is, when the processing shown in FIG. 7 is started, the information processing apparatus 1 first determines the USB port from the SCSI drive name “sda” (S601). This S601 is a process as shown in detail in FIG.

When the processing shown in FIG. 9 is started, the information processing apparatus 1 first searches for a file under “/ proc / scsi / usb-storage” (S805).
Then, it is determined whether or not the file exists (S810). If there is a file (S810: Yes), the found file is read (S815). Here, the file “/ proc / scsi / usb-storage / n” to be read is an information disclosure interface that provides information on the USB storage device and the USB port.

  In step S815, by reading the file, information on the USB port, information on the USB storage device, and the like can be acquired. In addition, such USB port information and USB storage device information are information that can be obtained by general Linux (registered trademark), but in this information processing apparatus 1, general Linux (registered trademark) Acquire information that cannot be acquired. Specifically, in S815, the drive name assigned to the USB storage device can be acquired.

  This drive name is the drive name itself stored in the storage area prepared for each SCSI-I / F by the processing of S235. In the case of general Linux (registered trademark), when the SCSI-I / F is used, the drive name is not notified to the SCSI-I / F, so the SCSI drive connected to the SCSI-I / F is not used. However, there is no way for the SCSI-I / F side to know what drive name is assigned.

  However, in this information processing apparatus 1, as described above, every time a read capacity command is issued, the drive name to which the command is issued is transmitted to the SCSI-I / F side, and the drive name is the SCSI name. -It remains in the storage area on the I / F side.

  Therefore, by looking at the information remaining in this storage area, the SCSI-I / F side can know what drive name is assigned to the SCSI drive connected to the SCSI-I / F. it can.

  When a plurality of SCSI drives are connected to the SCSI-I / F, only the name assigned to one of the SCSI drives is left in the storage area on the SCSI-I / F side. However, in the case of a USB storage device, one virtual SCSI-I / F is generated for one USB storage device. Therefore, since only one drive name is always left in the storage area corresponding to the SCSI-I / F, the drive name assigned to the USB storage device can be specified without any problem.

  That is, by looking at the information acquired in step S815, it is possible to specify which USB port the information corresponds to, as in general Linux (registered trademark). In addition, unlike general Linux (registered trademark), it is possible to specify what drive name the information corresponds to.

  Therefore, after completing S815, the information processing apparatus 1 first determines the SCSI drive name (S820), and checks whether the information corresponds to the SCSI drive name “sda”. If the information does not correspond to the SCSI drive name “sda” (S820: SCSI drive name is different), the process returns to S810. Incidentally, the process returns to S810 in this way when a SCSI drive other than the SCSI drive name “sda” (for example, SCSI drive name “sdb”) is recognized.

  On the other hand, if it is information corresponding to the SCSI drive name “sda” in S820 (S820: SCSI drive name searched for), the connected USB port is acquired (S825). That is, information indicating the connected USB port is extracted from the information read in S815. In this case, there is a USB storage device to which the SCSI drive name “sda” is assigned, the connected USB port is specified, and the process shown in FIG. 9 is ended.

  On the other hand, if there is no file to be read before the information corresponding to the SCSI drive name “sda” is found in S810 (S810: No), the processing shown in FIG. This corresponds to a process in the case where there is no USB storage device to which the SCSI drive name “sda” is assigned.

  When the processes of S805 to S825 as described above are completed, the process of S601 shown in FIG. 7 is completed. In this case, the information processing apparatus 1 is assigned the SCSI drive name “sda”. It is determined whether the USB storage device has been successfully indexed (S603).

  Here, when the indexing fails (S603: failure), it means that there is no USB storage device to which the SCSI drive name “sda” is assigned, so the SCSI drive name “sda” is not non-existent. It can be expected that it is assigned to the USB storage device.

  Therefore, in this case, the file system “/ dev / sda1” is mounted on the predetermined mount point “/ main” (S605). Here, the fact that the file system name becomes “sda1” when the drive name becomes “sda” is a matter determined in advance from the configuration of the information processing apparatus 1.

  When S605 is completed, it is determined whether or not the mounting is successful (S610). If the mounting is successful (S610: success), the script “/main/prog/startup.sh” in the mounted volume is executed (S615).

  On the other hand, if mounting fails in S610 (S610: failure), the script “/main/prog/startup.sh” cannot be executed as it is, and the information processing apparatus 1 cannot be started normally. In S603, if the indexing is successful (S603: success), it means that there is a USB storage device to which the SCSI drive name “sda” is assigned. Therefore, there is a high possibility that the non-USB storage device to which the SCSI drive name “sda” should be assigned is not normally recognized for some reason (for example, failure).

  Therefore, in this case, the SCSI drive name is determined from the backup operation USB port (S620). This S620 is a process as shown in detail in FIG. That is, when the processing shown in FIG. 8 is started, the information processing apparatus 1 first searches for a file under “/ proc / scsi / usb-storage” (S705).

  Then, it is determined whether there is a file (S710). If there is a file (S710: Yes), the found file is read (S715). Here, the file “/ proc / scsi / usb-storage / n” to be read is an information disclosure interface used in S815 already described. Therefore, by looking at the information acquired in S715, it is possible to specify which USB port the information corresponds to, as in general Linux (registered trademark). In addition, unlike general Linux (registered trademark), it is possible to specify what drive name the information corresponds to.

  Therefore, after completing S715, the information processing apparatus 1 first determines the connection port (S720), and checks whether the information corresponds to the internal USB port 21 or not. If the information does not correspond to the internal USB port 21 (S720: USB port is different), the process returns to S710. Incidentally, the process returns to S710 in this way when the USB storage device is connected to either of the external USB ports 22 and 23.

  On the other hand, if it is information corresponding to the internal USB port 21 in S720 (S720: USB port searched for), the name of the drive that executed the read capacity last is acquired (S725). That is, the drive name is extracted from the information read in S715.

  This drive name is a drive name such as “sda”, “sdb”,..., But there is no guarantee what the letters “a”, “b”,. Specifically, when the USB storage device 25 is connected to the internal USB port 21 and the USB storage device is also connected to the external USB ports 22 and 23, the drive name “sda” is included in the previously recognized device. Is granted. Further, the drive name “sdb” is given to the device recognized thereafter. However, since it is undefined which device is recognized first, for example, it is undefined whether the device to which the drive name “sda” is assigned is the USB storage device 25.

  In this regard, if the information corresponding to the internal USB port 21 is searched for in S710 to S720, and the drive name is extracted in S725, the drive name assigned to the USB storage device 25 connected to the internal USB port 21 is surely determined. You can get it.

  If there is no file to be read before the intended USB port is found in S710 (S710: No), the processing shown in FIG. 8 is terminated. This corresponds to processing when the USB storage device 25 is not connected to the internal USB port 21.

  When the process described above is completed, the process of S620 illustrated in FIG. 7 is completed. In this case, the information processing apparatus 1 sets the file system “/ dev / sdx1” to a predetermined value. Mount on the mount point “/ main” (S625). Here, “sdx” is the drive name acquired in S725. That is, a partition (file system) on the SCSI drive is specified using the drive name of the SCSI drive determined in the processing up to S725, and the partition is mounted at “/ main”.

  When S625 is completed, it is determined whether or not the mounting is successful (S630). If the mounting is successful (S630: success), the process proceeds to S615 already described, and the script “/ “main / prog / startup.sh” is executed (S615). If the mounting has failed (S630: failure), the processing shown in FIG. 7 ends.

  When the processing as described above is completed, S140 shown in FIG. 2 is completed. Subsequently, in the information processing apparatus 1, the startup program in the main volume used is activated (S145). That is, whether “sda1” on the hard disk device 17 that is a non-USB storage device or “sdx1” on the USB storage device 25 is mounted on “/ main” depends on the situation, but in any case, The startup program in one of the volumes starts.

  In the information processing apparatus 1, the system operates as a dedicated device (S150), and thereafter, the operation as the dedicated device is continued until a shutdown instruction is received from the user (S155: No). On the other hand, if there is a shutdown instruction from the user (S155: Yes), a shutdown process is executed (S160), and the power is turned off.

[effect]
According to the information processing apparatus 1 described above, when the device having the predetermined drive name “sda” is the hard disk device 17 that is a non-USB storage device, the drive name “sda” is obtained through S601 to S603. After confirming that the resulting device is not a USB storage device, the means for executing S605 (first mount means) changes the file system (first file system) of “/ dev / sda1” to “/ main”. After mounting at (predetermined mount point) and mounting, the means (process execution means) for executing S615 and S145 reads the program from the file group under the mount point and executes the process based on the program.

  On the other hand, if the predetermined drive name “sda” is assigned to the USB storage device, simply change the file system (first file system) of “/ dev / sda1” to “/ main” (predetermined mount point). Do not mount on).

  Therefore, even if a predetermined drive name is assigned to an unexpected USB storage device, there is no problem that a program is erroneously read from such an unexpected USB storage device.

  Further, when the predetermined drive name “sda” is given to the USB storage device, or when the mounting of the file system “/ dev / sda1” fails, the means for executing S625 (second) Mount means) mounts the file system (second file system) of “/ dev / sdx1” to “/ main” (predetermined mount point), and if it can be mounted, means for executing S615 and S145 (process execution means) ) Reads a program from a group of files under the mount point, and executes processing based on the program.

  Therefore, when the drive name of the hard disk device 17 which is a non-USB storage device becomes “sda”, various processes are started from the file system (first file system) of “/ dev / sda1”, but for some reason ( When the drive name of the USB storage device becomes “sda” due to, for example, a failure, or when mounting of “/ dev / sda1” fails, the file system (second file system) of “/ dev / sdx1” The alternative process for emergency can be started from.

  Also, when two or more USB storage devices are connected to a plurality of USB ports, what drive name is assigned to the plurality of USB storage devices by the means (drive name assigning means) that executes S235? Is undefined. Therefore, the drive name assigned to the USB storage device 25 connected to the internal USB port 21 (manager USB port) is also undefined.

  However, the means for executing S620 (drive name acquisition means) acquires the drive name assigned to the USB storage device 25 connected to the internal USB port 21. Therefore, the means for executing S625 (second mount means) can appropriately specify the file system on the USB storage device 25 using the drive name acquired in S620.

  Therefore, in S625, an appropriate file system can be mounted at “/ main”, and the file system on the USB storage device connected to one of the external USB ports 22 and 23 cannot be mounted by mistake. Absent.

  Therefore, after the appropriate file system is mounted, in S615 and S145, the program can be read from the file group under the mount point, and appropriate processing based on the program can be executed.

  Furthermore, in the information processing apparatus 1, when accessing the USB storage device via the SCSI interface in S235, the drive name assigned to the USB storage device is stored in a storage area provided in the SCSI interface.

  Therefore, in S625, when information is acquired via the information disclosure means (information disclosure interface) of “/ proc / scsi / usb-storage / n”, in addition to information regarding the SCSI interface and the USB storage device, information on the drive name Can also get. Therefore, unlike general Linux (registered trademark), the drive name information corresponding to the USB port can be obtained very easily.

  In addition, the process of saving such drive name information in the storage area of the SCSI interface is executed in the process corresponding to the read capacity command, so that a higher-level program that issues the read capacity command must be handled. You can introduce a mechanism to leave the drive name in the storage area without adding it. Therefore, it is not necessary to newly provide a dedicated command for transmitting the drive name to the SCSI interface, and no major program modification is required.

  In addition, since the information processing apparatus 1 repeats S710 to S720, even if there are a plurality of USB storage devices, the drive corresponding to the administrator USB port while reading the information as processing targets in order. You can choose a name.

  In addition, since the internal USB port 21 is in a place where the USB storage device 25 cannot be inserted and removed without opening the panel 35, a user other than the administrator accidentally attaches the USB device to the internal USB port 21. It can be prevented in advance.

  That is, although the program can be started from the internal USB port 21, it is not in a state where it can be easily used by anyone other than the administrator, and the external USB ports 22 and 23 can be easily used by non-administrators. It is a mechanism that can not do.

  Therefore, despite the implementation of a mechanism that can be activated from the USB storage device 25 in an emergency, it is possible to prevent activation from the external USB ports 22 and 23, and the system may not start normally, or an unexpected program Can be prevented from being executed.

  In the information processing apparatus 1, when the means for executing S601 (device type determination means) acquires information via the information disclosure interface, in addition to the information related to the data transmission interface and the USB storage device, the drive name Can be obtained, and the correspondence between the USB storage device and the drive name can be understood.

  Therefore, unlike general Linux (registered trademark), when there is no information about the determination target in the acquired information, it is possible to determine that the determination target is a non-USB storage device.

[Modifications, etc.]
As mentioned above, although embodiment of this invention was described, this invention is not limited to said specific one Embodiment, In addition, it can implement with a various form.

  For example, in the above-described embodiment, the information processing apparatus 1 having a function as a karaoke commander has been exemplified. However, what kind of function is set as an automatically activated function is arbitrary. That is, in addition to the karaoke commander, the configuration of the present invention can be employed in a dedicated information processing apparatus for various specific uses.

  In the above embodiment, the serial ATA hard disk device is illustrated as a specific example of the non-USB storage device. However, the “non-USB storage device” in the present invention is “recognized as a SCSI device by the information processing device”. A storage device that is not a USB storage device ”.

  Furthermore, in the above-described embodiment, an example is shown in which booting from a non-USB storage device is normally performed, and booting from a USB storage device is performed in an emergency, but accidental booting from an unexpected USB storage device is prevented. If it is only necessary to do so, it is optional whether or not to adopt a configuration for starting from the USB storage device in an emergency.

  More specifically, for example, if it is determined that activation from a non-USB storage device cannot be performed, the activation may be interrupted to prevent accidental activation from an USB storage device. Good.

  In the case of the above embodiment, both the administrator USB port and the general USB port are provided. After determining whether the USB port is for the administrator, the USB storage device is activated. However, for example, when there is only an administrator USB port hidden in the housing, the determination as to whether or not it is an administrator USB port may be omitted.

The block diagram which shows the internal structure of information processing apparatus. The flowchart of the process performed with the power supply ON of information processing apparatus. The flowchart of the SCSI drive connection monitoring in OS. The flowchart of USB device connection monitoring in OS. The flowchart which shows the detail of S335. The flowchart which shows the detail of S345. The flowchart which shows the detail of S140. The flowchart which shows the detail of S620. The flowchart which shows the detail of S601.

  DESCRIPTION OF SYMBOLS 1 ... Information processing apparatus, 11 ... CPU, 13 ... ROM, 15 ... RAM, 17 ... Hard disk device, 20 ... USB interface, 21 ... Internal USB port, 22, 23 ... External USB port, 25 ... USB storage device, 31 ... Housing, 33 ... Opening, 35 ... Panel, 37 ... Fixing tool.

Claims (8)

A non-USB storage device connected via an interface of a standard different from the USB (Universal Serial Bus) standard, and a USB port to which the USB storage device can be connected, and connected to the non-USB storage device and the USB port An information processing apparatus that recognizes a USB storage device as a SCSI (Small Computer System Interface) device,
When a non-USB storage device or a USB storage device connected to the USB port is detected, a logical data transmission interface for performing data transmission with the detected device in accordance with a SCSI standard is generated. A data transmission interface generating means;
Drive name assigning means for assigning a unique drive name to a device accessible via the data transmission interface each time the data transmission interface generated by the data transmission interface generating means is detected;
A device type determination unit that determines whether or not the determination target is the non-USB storage device with a device whose drive name assigned by the drive name allocation unit is a predetermined drive name as a determination target;
A first mount unit that mounts a first file system on the non-USB storage device at a predetermined mount point when the device type determination unit determines that the determination target is the non-USB storage device;
Mount result determination means for determining whether or not the first mount means has successfully mounted the first file system;
A process execution unit that reads a program from a file group under the mount point and executes a process based on the program when it is determined by the mount result determination unit that the first file system has been successfully mounted;
When the device type determination unit determines that the target device is not the non-USB storage device, or when the mount result determination unit determines that the mounting of the first file system has failed, the USB device Second mounting means for mounting a second file system on the USB storage device connected to the port at the predetermined mount point;
When the second file system is mounted on the predetermined mount point by the second mount unit, the process execution unit reads a program from a file group under the mount point and executes a process based on the program. An information processing apparatus characterized by that. A plurality of USB ports are provided, and among the plurality of USB ports, at least one USB port is an administrator USB port that can be used only by an administrator, and the remaining USB ports can be used by non-administrators in general USB port,
Moreover,
Drive name acquisition means for acquiring the drive name assigned by the drive name assignment means to the USB storage device connected to the administrator USB port;
The second mount unit specifies the second file system on the USB storage device connected to the administrator USB port using the drive name acquired by the drive name acquisition unit. The information processing apparatus according to claim 1, wherein the specified second file system is mounted on the predetermined mount point. Wherein upon detecting a connected USB storage device to a USB port, an information information public interface generation means for generating a public interface to access the information on the information about the data transmission interface USB storage device,
When accessing the USB storage device via the data transmission interface, the drive name assigning means assigns the drive name assigned to the USB storage device to be accessed to the data transmission interface. By transmitting, the drive name is stored in a storage area provided in the data transmission interface,
The drive name acquisition unit reads information stored in a storage area included in the data transmission interface via the information disclosure interface, and the administrator USB port and the drive name are read from the read information. The information processing apparatus according to claim 2, wherein information indicating a correspondence relationship is acquired. The drive name assigning means, after assigning the drive name to the USB storage device, acquires information relating to the capacity of the USB storage device, so that the read capacity that is one type of SCSI command defined by the SCSI standard is used. The information processing apparatus according to claim 3, wherein a city command is issued, and the drive name is transmitted to the data transmission interface in a process corresponding to the read capacity command. The drive name acquisition unit sequentially reads information about all the USB storage devices that can acquire information via the information disclosure interface, and information on the USB port included in the read information is determined in advance. Determining whether the information corresponds to the administrator USB port, and if the information corresponds to the administrator USB port, obtain the drive name included in the read information. The information processing apparatus according to claim 4, wherein the information processing apparatus is characterized. The administrator USB port is housed inside the housing of the information processing apparatus, and the USB device can be inserted and removed when a panel provided in the housing is opened.
6. The general USB port is exposed to the outside of the housing, and a USB device can be inserted and removed without opening the panel. An information processing apparatus according to claim 1. A non-USB storage device connected via an interface of a standard different from the USB (Universal Serial Bus) standard, and a USB port to which the USB storage device can be connected, and connected to the non-USB storage device and the USB port An information processing apparatus that recognizes a USB storage device as a SCSI (Small Computer System Interface) device,
When a non-USB storage device or a USB storage device connected to the USB port is detected, a logical data transmission interface for performing data transmission with the detected device in accordance with a SCSI standard is generated. A data transmission interface generating means;
Drive name assigning means for assigning a unique drive name to a device accessible via the data transmission interface each time the data transmission interface generated by the data transmission interface generating means is detected;
A device type determination unit that determines whether or not the determination target is the non-USB storage device with a device whose drive name assigned by the drive name allocation unit is a predetermined drive name as a determination target;
A first mount unit that mounts a first file system on the non-USB storage device at a predetermined mount point when the device type determination unit determines that the determination target is the non-USB storage device;
Mount result determination means for determining whether or not the first mount means has successfully mounted the first file system;
A process execution unit that reads a program from a file group under the mount point and executes a process based on the program when it is determined by the mount result determination unit that the first file system has been successfully mounted;
Wherein upon detecting a connected USB storage device into the USB port, and an information data public interface generation means for generating a public interface to access the information on the information about the data transmission interface USB storage device ,
When accessing the USB storage device via the data transmission interface, the drive name assigning means assigns the drive name assigned to the USB storage device to be accessed to the data transmission interface. By transmitting, the drive name is stored in a storage area provided in the data transmission interface,
The device type determination unit reads information stored in a storage area included in the data transmission interface via the information disclosure interface, and determines the correspondence between the USB port and the drive name from the read information. The information processing apparatus is characterized in that, when information about the determination target does not exist in the acquired information, the determination target is determined to be the non-USB storage device. The drive name assigning means, after assigning the drive name to the USB storage device, acquires information relating to the capacity of the USB storage device, so that the read capacity that is one type of SCSI command defined by the SCSI standard is used. The information processing apparatus according to claim 7, wherein a city command is issued, and the drive name is transmitted to the data transmission interface in a process corresponding to the read capacity command.

Images