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docs/develop: some minor fixes to file_systems/overview.rst.

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Change-Id: Ia710f87db372829fd1ccb84999cc1426091e1395
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10248
Reviewed-by: Adrien Destugues <[email protected]>
Haiku-Format: Haiku-format Bot <[email protected]>
Tested-by: Commit checker robot <[email protected]>
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Oscar Lesta
2026-01-24 15:11:39 +00:00
committed by waddlesplash
parent 17c18c1b0d
commit 22a91d557c
1 changed files with 9 additions and 7 deletions
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docs/develop/file_systems/overview.rst
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@@ -12,8 +12,8 @@ See docs/user/drivers/fs_interface.dox for more detailed documentation
of this interface. of this interface.
It's important to note that while there may be some similarities in It's important to note that while there may be some similarities in
the interface with that of other operations systems, one should not the interface with that of other operating systems, one should not
make any assumptions about the desired behavior based soley on the make any assumptions about the desired behavior based solely on the
function prototypes defined in fs_interface.h. function prototypes defined in fs_interface.h.
The following is a list of notes calling out some potential mistakes. The following is a list of notes calling out some potential mistakes.
@@ -46,9 +46,9 @@ For the early development steps, it is much easier to run the filesystem code
in a more controlled environment. This can be achieved through the use of in a more controlled environment. This can be achieved through the use of
a "filesystem shell": a simple application that runs the filesystem code, and a "filesystem shell": a simple application that runs the filesystem code, and
allows performing specific operations through a command line interface. It can be allows performing specific operations through a command line interface. It can be
executed on any platform (Haiku or another supported one such as Linux). executed on Haiku, or on other supported platforms, such as Linux.
Example of fs_shell implementations are available under src/tests/add-ons/kernel/file_systems/ Examples of fs_shell implementations are available under src/tests/add-ons/kernel/file_systems/
for the bfs and btrfs filesystems. for the bfs and btrfs filesystems.
For example, to build the fs_shell for btrfs, use For example, to build the fs_shell for btrfs, use
@@ -74,13 +74,15 @@ userlandfs
.......... ..........
As a second step, it's possible to use the filesystem as part of a running As a second step, it's possible to use the filesystem as part of a running
system, while still running it in userland. This allows use of Debugger, system, while still running it in userland. This allows the use of Debugger,
memory protection, and in general any kind of userland debugging or tracing memory protection, and in general any kind of userland debugging or tracing
tool. When the filesystem crashes, it does not bring down the whole system. tool. Moreover, the system and kernel can survive an userland
filesystem crash, reducing the risk of corrupting data or losing
work.
Userlandfs can run the filesystem code using the same interface as the kernel, Userlandfs can run the filesystem code using the same interface as the kernel,
therefore, once everything is working with userlandfs, running the filesystem therefore, once everything is working with userlandfs, running the filesystem
as kernel code is usually quite easy (and provides a performance boost) as kernel code is usually quite easy (and provides a performance boost).
See more here: :ref:`Userland FS Page` See more here: :ref:`Userland FS Page`