![]() Set the bitmask of the directory permissions that are not present. This is mainly useful for big files which are kept open for a long time and written to without changing their size, such as databases or file system images mounted as loop. The argument is a number of seconds, with a default value of 60. Only update the file modification time and the file change time of a file when it is closed or when the indicated delay since the previous update has elapsed. Makes ntfs-3g (or lowntfs-3g) to print a lot of debug output from libntfs-3g and FUSE. The option and the flag have no effect on existing files. In such a directory, new files are created compressed and new subdirectories are themselves marked for compression. ![]() A directory is marked for compression by setting the bit 11 (value 0x00000800) in its Windows attribute. This option enables creating new transparently compressed files in directories marked for compression. This option prevents fuse from splitting write buffers into 4K chunks, enabling big write buffers to be transferred from the application in a single step (up to some system limit, generally 128K bytes). Unlike noatime this option doesn't break applications that need to know if a file has been read since the last time it was modified. The access time is only updated if the previous access time was earlier than the current modify or change time. It updates inode access times relative to modify or change time. The relatime option is very similar to noatime. The noatime option disables inode access time updates, which can speed up file operations and prevent sleeping (notebook) disks spinning up too often thus saving energy and disk lifetime. The **atime** option updates inode access time for each access. ![]() This option is only allowed to root, but this restriction can be overridden by the **user_allow_other** option in the /etc/nf file. This option overrides the security measure restricting file access to the user mounting the filesystem. It is set by default when a user mapping file is present and the **permissions** mount option is not set. This option is only available on specific builds. aclĮnable setting Posix ACLs on created files and use them for access control. OPTIONSīelow is a summary of the options that ntfs-3g accepts. You can list all the named data streams a file has by getting the extended attribute. Named data streams act like normal files, so you can read from them, write to them and even delete them (using rm). By default, ntfs-3g will only read the unnamed data stream.īy using the option streams_interface=windows, with the ntfs-3g driver (not possible with lowntfs-3g), you will be able to read any named data streams, simply by specifying the stream name after a colon. The size of a file is the size of its unnamed data stream. Every file has exactly one unnamed data stream and can have many named data streams. The option windows_names may be used to apply Windows restrictions to new file names. This is perfectly legal on Windows, though some application may get confused. This means that filenames are case sensitive and all characters are allowed except '/' and '\0'. ![]() While the ntfs-3g driver handles all of them, it always creates new files in the POSIX namespace for maximum portability and interoperability reasons. NTFS supports several filename namespaces: DOS, Win32 and POSIX. If ntfs-3g is set setuid-root then non-root users will be also able to mount volumes. Moreover, by defining a Windows-to-Linux user mapping, the ownerships and permissions are even applied to Windows users and conversely. Uid and/or the gid options together with the umask, or fmask and dmask options.ĭoing so, all Windows users have full access to the files created by ntfs-3g.īut, by setting the permissions option, you can benefit from the full ownership and permissions features as defined by POSIX. You can also assign permissions to a single user by using the Access Handling and Securityīy default, files and directories are owned by the effective user and group of the mounting process, and everybody has full read, write, execution and directory browsing permissions. If either Windows is hibernated or its fast restart is enabled, partitions on internal disks are forced to be mounted in read-only mode. ![]()
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