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Documentation: update adfs filesystem documentation

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Add an introduction to adfs to its documentation detailing which formats
are supported by the module.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Russell King 2019-12-09 11:11:43 +00:00 committed by Al Viro
parent 25e5d4df3b
commit 76ed99d199
1 changed files with 24 additions and 0 deletions
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24
Documentation/filesystems/adfs.txt
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@ -1,3 +1,27 @@
Filesystems supported by ADFS
-----------------------------
The ADFS module supports the following Filecore formats which have:
- new maps
- new directories or big directories
In terms of the named formats, this means we support:
- E and E+, with or without boot block
- F and F+
We fully support reading files from these filesystems, and writing to
existing files within their existing allocation. Essentially, we do
not support changing any of the filesystem metadata.
This is intended to support loopback mounted Linux native filesystems
on a RISC OS Filecore filesystem, but will allow the data within files
to be changed.
If write support (ADFS_FS_RW) is configured, we allow rudimentary
directory updates, specifically updating the access mode and timestamp.
Mount options for ADFS
----------------------