Package oshi.software.os.windows

Class WindowsFileSystem

  • All Implemented Interfaces:
    FileSystem
    @ThreadSafe
public class WindowsFileSystem
extends AbstractFileSystem
    The Windows File System contains OSFileStores which are a storage pool, device, partition, volume, concrete file system or other implementation specific means of file storage. In Windows, these are represented by a drive letter, e.g., "A:\" and "C:\"

    • Field Detail

      • SEM_FAILCRITICALERRORS

        private static final int SEM_FAILCRITICALERRORS
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      • FILE_CASE_SENSITIVE_SEARCH

        private static final int FILE_CASE_SENSITIVE_SEARCH
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      • FILE_CASE_PRESERVED_NAMES

        private static final int FILE_CASE_PRESERVED_NAMES
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      • FILE_SEQUENTIAL_WRITE_ONCE

        private static final int FILE_SEQUENTIAL_WRITE_ONCE
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      • FILE_SUPPORTS_ENCRYPTION

        private static final int FILE_SUPPORTS_ENCRYPTION
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      • FILE_SUPPORTS_OBJECT_IDS

        private static final int FILE_SUPPORTS_OBJECT_IDS
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      • FILE_SUPPORTS_REPARSE_POINTS

        private static final int FILE_SUPPORTS_REPARSE_POINTS
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      • FILE_SUPPORTS_SPARSE_FILES

        private static final int FILE_SUPPORTS_SPARSE_FILES
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      • FILE_SUPPORTS_TRANSACTIONS

        private static final int FILE_SUPPORTS_TRANSACTIONS
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      • FILE_SUPPORTS_USN_JOURNAL

        private static final int FILE_SUPPORTS_USN_JOURNAL
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      • FILE_VOLUME_IS_COMPRESSED

        private static final int FILE_VOLUME_IS_COMPRESSED
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      • OPTIONS_MAP

        private static final java.util.Map<java.lang.Integer,​java.lang.String> OPTIONS_MAP

      • MAX_WINDOWS_HANDLES

        static final long MAX_WINDOWS_HANDLES

    • Constructor Detail

      • WindowsFileSystem

        public WindowsFileSystem()

        Constructor for WindowsFileSystem.

    • Method Detail

      • getFileStores

        public java.util.List<OSFileStore> getFileStores​(boolean localOnly)
        Description copied from interface: FileSystem
        Get file stores on this machine Instantiates a list of OSFileStore objects, representing a storage pool, device, partition, volume, concrete file system or other implementation specific means of file storage.
        Parameters:
        localOnly - If true, filters the list to only local file stores.
        Returns:
        A list of OSFileStore objects or an empty array if none are present.

      • getLocalVolumes

        static java.util.ArrayList<OSFileStore> getLocalVolumes​(java.lang.String volumeToMatch)
        Package private method for getting all mounted local drives.
        Parameters:
        volumeToMatch - an optional string to filter match, null otherwise
        Returns:
        A list of OSFileStore objects representing all local mounted volumes

      • getWmiVolumes

        static java.util.List<OSFileStore> getWmiVolumes​(java.lang.String nameToMatch,
                                                 boolean localOnly)
        Package private method for getting logical drives listed in WMI.
        Parameters:
        nameToMatch - an optional string to filter match, null otherwise
        localOnly - Whether to only search local drives
        Returns:
        A list of OSFileStore objects representing all network mounted volumes

      • getDriveType

        private static java.lang.String getDriveType​(java.lang.String drive)
        Private method for getting mounted drive type.
        Parameters:
        drive - Mounted drive
        Returns:
        A drive type description

      • getOpenFileDescriptors

        public long getOpenFileDescriptors()
        Description copied from interface: FileSystem
        The current number of open file descriptors. A file descriptor is an abstract handle used to access I/O resources such as files and network connections. On UNIX-based systems there is a system-wide limit on the number of open file descriptors. On Windows systems, this method returns the total number of handles held by Processes. While Windows handles are conceptually similar to file descriptors, they may also refer to a number of non-I/O related objects.
        Returns:
        The number of open file descriptors if available, 0 otherwise.

      • getMaxFileDescriptors

        public long getMaxFileDescriptors()
        Description copied from interface: FileSystem
        The maximum number of open file descriptors. A file descriptor is an abstract handle used to access I/O resources such as files and network connections. On UNIX-based systems there is a system-wide limit on the number of open file descriptors. On Windows systems, this method returns the theoretical max number of handles (2^24-2^15 on 32-bit, 2^24-2^16 on 64-bit). There may be a lower per-process limit. While Windows handles are conceptually similar to file descriptors, they may also refer to a number of non-I/O related objects.
        Returns:
        The maximum number of file descriptors if available, 0 otherwise.

      • getMaxFileDescriptorsPerProcess

        public long getMaxFileDescriptorsPerProcess()
        Description copied from interface: FileSystem
        The maximum number of open file descriptors per process. This returns the upper limit which applies to each process. The actual limit of a process may be lower if configured.
        Returns:
        The maximum number of file descriptors of each process if available, 0 otherwise.