.\" Copyright 1996 Daniel Quinlan (Daniel.Quinlan@linux.org)
.\"
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-.\" This is free documentation; you can redistribute it and/or
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+.\" SPDX-License-Identifier: GPL-2.0-or-later
.\"
.\" 2007-12-14 mtk Added Reiserfs, XFS, JFS.
.\"
-.TH FILESYSTEMS 5 2017-09-15 "Linux" "Linux Programmer's Manual"
+.TH filesystems 5 (date) "Linux man-pages (unreleased)"
.nh
.SH NAME
filesystems \- Linux filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660,
JFS, minix, msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv, umsdos, vfat,
-XFS, xiafs,
+XFS, xiafs
.SH DESCRIPTION
When, as is customary, the
.B proc
see
.BR proc (5)
for more details.
+There is also a legacy
+.BR sysfs (2)
+system call (whose availability is controlled by the
+.\" commit: 6af9f7bf3c399e0ab1eee048e13572c6d4e15fe9
+.B CONFIG_SYSFS_SYSCALL
+kernel build configuration option since Linux 3.15)
+that enables enumeration of the currently available filesystem types
+regardless of
+.I /proc
+availability and/or sanity.
+.PP
If you need a currently unsupported filesystem, insert the corresponding
-module or recompile the kernel.
+kernel module or recompile the kernel.
.PP
In order to use a filesystem, you have to
.I mount
it; see
+.BR mount (2)
+and
.BR mount (8).
.PP
-Below a short description of the available or historically available
+The following list provides a
+short description of the available or historically available
filesystems in the Linux kernel.
-See kernel documentation for a comprehensive
+See the kernel documentation for a comprehensive
description of all options and limitations.
-.TP 10
+.TP
+.B erofs
+is the Enhanced Read-Only File System, stable since Linux 5.4.
+.\" commit 47e4937a4a7ca4184fd282791dfee76c6799966a moves it out of staging
+See
+.BR erofs (5).
+.TP
.B ext
is an elaborate extension of the
.B minix
It has been completely superseded by the second version
of the extended filesystem
.RB ( ext2 )
-and has been removed from the kernel (in 2.1.21).
+and has been removed from the kernel (in Linux 2.1.21).
.TP
.B ext2
-is the high performance disk filesystem used by Linux for fixed disks
+is a disk filesystem that was used by Linux for fixed disks
as well as removable media.
The second extended filesystem was designed as an extension of the
extended filesystem
.TP
.B JFS
is a journaling filesystem, developed by IBM,
-that was integrated into Linux in kernel 2.4.24.
+that was integrated into Linux 2.4.24.
.TP
.B minix
is the filesystem used in the Minix operating system, the first to run
optional period and 3 character extension.
.TP
.B ncpfs
-is a network filesystem that supports the NCP protocol, used by
-Novell NetWare.
+is a network filesystem that supports the NCP protocol,
+used by Novell NetWare.
+It was removed from the kernel in Linux 4.17.
.IP
To use
.BR ncpfs ,
you need special programs, which can be found at
-.UR ftp://linux01.gwdg.de\:/pub\:/ncpfs
+.UR ftp://ftp.gwdg.de\:/pub\:/linux\:/misc\:/ncpfs
.UE .
.TP
.B nfs
is the network filesystem used to access disks located on remote computers.
.TP
.B ntfs
-replaces Microsoft Window's FAT filesystems (VFAT, FAT32).
-It has reliability, performance, and space-utilization enhancements
-plus features like ACLs, journaling, encryption, and so on.
+is the filesystem native to Microsoft Windows NT,
+supporting features like ACLs, journaling, encryption, and so on.
.TP
.B proc
is a pseudo filesystem which is used as an interface to kernel data
.TP
.B Reiserfs
is a journaling filesystem, designed by Hans Reiser,
-that was integrated into Linux in kernel 2.4.1.
+that was integrated into Linux 2.4.1.
.TP
.B smb
is a network filesystem that supports the SMB protocol, used by
-Windows for Workgroups, Windows NT, and Lan Manager.
+Windows.
See
.UR https://www.samba.org\:/samba\:/smbfs/
.UE .
.TP
.B sysv
-is an implementation of the SystemV/Coherent filesystem for Linux.
-It implements all of Xenix FS, SystemV/386 FS, and Coherent FS.
+is an implementation of the System V/Coherent filesystem for Linux.
+It implements all of Xenix FS, System V/386 FS, and Coherent FS.
.TP
.B umsdos
is an extended DOS filesystem used by Linux.
.TP
.B XFS
is a journaling filesystem, developed by SGI,
-that was integrated into Linux in kernel 2.4.20.
+that was integrated into Linux 2.4.20.
.TP
.B xiafs
was designed and implemented to be a stable, safe filesystem by
The
.B xiafs
filesystem is no longer actively developed or maintained.
-It was removed from the kernel in 2.1.21.
+It was removed from the kernel in Linux 2.1.21.
.SH SEE ALSO
.BR fuse (4),
.BR btrfs (5),
.BR ext4 (5),
.BR nfs (5),
.BR proc (5),
+.BR sysfs (5),
.BR tmpfs (5),
+.BR xfs (5),
.BR fsck (8),
.BR mkfs (8),
.BR mount (8)
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