| .. SPDX-License-Identifier: GPL-2.0 |
| |
| ===== |
| NTFS3 |
| ===== |
| |
| Summary and Features |
| ==================== |
| |
| NTFS3 is fully functional NTFS Read-Write driver. The driver works with NTFS |
| versions up to 3.1. File system type to use on mount is *ntfs3*. |
| |
| - This driver implements NTFS read/write support for normal, sparse and |
| compressed files. |
| - Supports native journal replaying. |
| - Supports NFS export of mounted NTFS volumes. |
| - Supports extended attributes. Predefined extended attributes: |
| |
| - *system.ntfs_security* gets/sets security |
| |
| Descriptor: SECURITY_DESCRIPTOR_RELATIVE |
| |
| - *system.ntfs_attrib* gets/sets ntfs file/dir attributes. |
| |
| Note: Applied to empty files, this allows to switch type between |
| sparse(0x200), compressed(0x800) and normal. |
| |
| - *system.ntfs_attrib_be* gets/sets ntfs file/dir attributes. |
| |
| Same value as system.ntfs_attrib but always represent as big-endian |
| (endianness of system.ntfs_attrib is the same as of the CPU). |
| |
| Mount Options |
| ============= |
| |
| The list below describes mount options supported by NTFS3 driver in addition to |
| generic ones. You can use every mount option with **no** option. If it is in |
| this table marked with no it means default is without **no**. |
| |
| .. flat-table:: |
| :widths: 1 5 |
| :fill-cells: |
| |
| * - iocharset=name |
| - This option informs the driver how to interpret path strings and |
| translate them to Unicode and back. If this option is not set, the |
| default codepage will be used (CONFIG_NLS_DEFAULT). |
| |
| Example: iocharset=utf8 |
| |
| * - uid= |
| - :rspan:`1` |
| * - gid= |
| |
| * - umask= |
| - Controls the default permissions for files/directories created after |
| the NTFS volume is mounted. |
| |
| * - dmask= |
| - :rspan:`1` Instead of specifying umask which applies both to files and |
| directories, fmask applies only to files and dmask only to directories. |
| * - fmask= |
| |
| * - noacsrules |
| - "No access rules" mount option sets access rights for files/folders to |
| 777 and owner/group to root. This mount option absorbs all other |
| permissions. |
| |
| - Permissions change for files/folders will be reported as successful, |
| but they will remain 777. |
| |
| - Owner/group change will be reported as successful, butthey will stay |
| as root. |
| |
| * - nohidden |
| - Files with the Windows-specific HIDDEN (FILE_ATTRIBUTE_HIDDEN) attribute |
| will not be shown under Linux. |
| |
| * - sys_immutable |
| - Files with the Windows-specific SYSTEM (FILE_ATTRIBUTE_SYSTEM) attribute |
| will be marked as system immutable files. |
| |
| * - hide_dot_files |
| - Updates the Windows-specific HIDDEN (FILE_ATTRIBUTE_HIDDEN) attribute |
| when creating and moving or renaming files. Files whose names start |
| with a dot will have the HIDDEN attribute set and files whose names |
| do not start with a dot will have it unset. |
| |
| * - windows_names |
| - Prevents the creation of files and directories with a name not allowed |
| by Windows, either because it contains some not allowed character (which |
| are the characters " * / : < > ? \\ | and those whose code is less than |
| 0x20), because the name (with or without extension) is a reserved file |
| name (CON, AUX, NUL, PRN, LPT1-9, COM1-9) or because the last character |
| is a space or a dot. Existing such files can still be read and renamed. |
| |
| * - discard |
| - Enable support of the TRIM command for improved performance on delete |
| operations, which is recommended for use with the solid-state drives |
| (SSD). |
| |
| * - force |
| - Forces the driver to mount partitions even if volume is marked dirty. |
| Not recommended for use. |
| |
| * - sparse |
| - Create new files as sparse. |
| |
| * - showmeta |
| - Use this parameter to show all meta-files (System Files) on a mounted |
| NTFS partition. By default, all meta-files are hidden. |
| |
| * - prealloc |
| - Preallocate space for files excessively when file size is increasing on |
| writes. Decreases fragmentation in case of parallel write operations to |
| different files. |
| |
| * - acl |
| - Support POSIX ACLs (Access Control Lists). Effective if supported by |
| Kernel. Not to be confused with NTFS ACLs. The option specified as acl |
| enables support for POSIX ACLs. |
| |
| Todo list |
| ========= |
| - Full journaling support over JBD. Currently journal replaying is supported |
| which is not necessarily as effectice as JBD would be. |
| |
| References |
| ========== |
| - Commercial version of the NTFS driver for Linux. |
| https://www.paragon-software.com/home/ntfs-linux-professional/ |
| |
| - Direct e-mail address for feedback and requests on the NTFS3 implementation. |
| almaz.alexandrovich@paragon-software.com |
