Commit 34873900 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Jonathan Corbet

docs: filesystems: convert adfs.txt to ReST

- Add a SPDX header;
- Add a document title;
- Adjust section titles;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/15ee92f03ec917e5d26bd7b863565dec88c843f6.1581955849.git.mchehab+huawei@kernel.orgSigned-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 07d241fd
.. SPDX-License-Identifier: GPL-2.0
===============================
Acorn Disc Filing System - ADFS
===============================
Filesystems supported by ADFS
-----------------------------
......@@ -25,6 +31,7 @@ directory updates, specifically updating the access mode and timestamp.
Mount options for ADFS
----------------------
============ ======================================================
uid=nnn All files in the partition will be owned by
user id nnn. Default 0 (root).
gid=nnn All files in the partition will be in group
......@@ -36,22 +43,23 @@ Mount options for ADFS
ftsuffix=n When ftsuffix=0, no file type suffix will be applied.
When ftsuffix=1, a hexadecimal suffix corresponding to
the RISC OS file type will be added. Default 0.
============ ======================================================
Mapping of ADFS permissions to Linux permissions
------------------------------------------------
ADFS permissions consist of the following:
Owner read
Owner write
Other read
Other write
- Owner read
- Owner write
- Other read
- Other write
(In older versions, an 'execute' permission did exist, but this
does not hold the same meaning as the Linux 'execute' permission
and is now obsolete).
does not hold the same meaning as the Linux 'execute' permission
and is now obsolete).
The mapping is performed as follows:
The mapping is performed as follows::
Owner read -> -r--r--r--
Owner write -> --w--w---w
......@@ -66,17 +74,18 @@ Mapping of ADFS permissions to Linux permissions
Possible other mode permissions -> ----rwxrwx
Hence, with the default masks, if a file is owner read/write, and
not a UnixExec filetype, then the permissions will be:
not a UnixExec filetype, then the permissions will be::
-rw-------
However, if the masks were ownmask=0770,othmask=0007, then this would
be modified to:
be modified to::
-rw-rw----
There is no restriction on what you can do with these masks. You may
wish that either read bits give read access to the file for all, but
keep the default write protection (ownmask=0755,othmask=0577):
keep the default write protection (ownmask=0755,othmask=0577)::
-rw-r--r--
......
......@@ -47,6 +47,7 @@ Documentation for filesystem implementations.
:maxdepth: 2
9p
adfs
autofs
fuse
overlayfs
......
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