* Rewrite most hook functions, modeling many after FreeBSD hooks and
making use of support functions ported from FreeBSD. As it stands
now, most of the FreeBSD driver files are present with minimal
changes, with a pseudo-BSD compatability layer added to make them
work in Haiku. Performance is not what it could be if the BSD code
was rewritten to interface directly with the Haiku kernel, but under
the current approach the driver might be easier to maintain in terms
of porting future FreeBSD bugfixes.
* Add support for FAT in userlandfs. Aside from being useful for
debugging, the userlandfs module provides better filename support
for characters that are not in code page 850, because it can link
libiconv.
* Update the fat_test.sh script to use dosfstools to format the tested
device, instead of the internal dosfs_initialize hook. The script
is written to test specific cluster sizes, but the initialize hook
still does not support user-specified cluster sizes.
* Coding guidelines: lightly-modified BSD files and lightly-modified
original Haiku driver files have not been revised to adhere to the
Haiku style guidelines. For BSD files, this is meant to make it
easier to compare with the FreeBSD repository when merging future
FreeBSD patches. For existing driver files, this is to highlight the
functional changes made in this change request (I can submit a
separate patch later to clean up style in these files). Also, some
#include lines are not alphbetized (they are instead ordered like
they would be in FreeBSD, because one header relies on another).
Change-Id: I92521d4b700d7aa52fe6c664cf8f83a4d9395809
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7660
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
The table of content of the top level will include everything that's up
to 2 levels down. Currently this results in a lot of pages and no clear
organization.
Extra index pages allow for more intermediate levels, resulting in less
things being listed in the main page. This way the organization is a bit
clearer, even if this is still not great due to many missing pages and
sections in the documentation currently.
Change-Id: I5bbdd96b3c2ff3334b9ad1b86fd9e7fb00fd63a6
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6008
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
An effort was started some time ago to consolidate all internal
documentation in the git tree. However, this was just an accumulation of
files in various formats without any strucutre or way to browse it,
which results in no one even knowing that we have docs here.
This converts most of the files to restructuredtext and uses Sphinx to
generate an HTML browsable user manual (with a table of content and a
first attempt to put things in a global hierarchy).
There are almost no changes to the documentation content in this commit
(some obviously obsolete things were removed). The plan is to get the
toolchain up and running to make these docs easily available, and only
then see about improving the content. We can migrate some things off the
wiki and website, and rework the table of contents to have some more
hierarchy levels because currently it's a bit messy.
Change-Id: I924ac9dc6e753887ab56f18a09bdb0a1e1793bfd
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4370
Reviewed-by: Niels Sascha Reedijk <niels.reedijk@gmail.com>
Now file system can be mounted sucessfully.
Adding documentation for using the code.
Change-Id: I2bd1b72e06ffc3b5f6306aaa69c59becf4cb882b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2696
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
After this patch, "UnitTester BSymLink" passes.
BSymLink::ReadLink() in BeOS would always return the length of the
link unless an error occurred. Before this patch, Haiku instead seemed
to emulate posix readlink() behavior, returning the number of bytes
copied into the output buffer.
BeOS also did not guarantee that the string written into the output
buffer is NULL terminated if the output buffer cannot contain the
entire link contents, but the Haiku implementation does since it is is
a basic safety issue.
This patch fixes this and updates the Haiku API docs to describe the
behavior explicitly.
Fixing this required changing behavior in bfs_read_link, which
required changes in many more places.
docs/user/storage/SymLink.dox:
src/kits/storage/SymLink.cpp:
* Don't return B_BUFFER_OVERFLOW if the provided buffer is not large
enough to hold the link contents.
* Update documentation to clearly describe behavior.
src/add-ons/kernel/file_systems/bfs/kernel_interface.cpp:
* Change bfs_read_link() to always return the link length. This is
called by common_read_link in the VFS, which is called by
_kern_read_link().
src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp:
src/add-ons/kernel/file_systems/exfat/kernel_interface.cpp:
src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp:
src/add-ons/kernel/file_systems/iso9660/kernel_interface.cpp:
src/add-ons/kernel/file_systems/netfs/client/netfs.cpp:
src/add-ons/kernel/file_systems/nfs/nfs_add_on.c:
src/add-ons/kernel/file_systems/ramfs/kernel_interface.cpp:
src/add-ons/kernel/file_systems/reiserfs/Iterators.cpp:
src/add-ons/kernel/file_systems/reiserfs/Iterators.h:
src/add-ons/kernel/file_systems/reiserfs/Volume.cpp:
src/add-ons/kernel/file_systems/reiserfs/Volume.h:
* Update the implementation of read_link for these filesystems. Some
of them were incorrect, and some had just copied the posix behavior of
bfs from before this patch.
* Use user_memcpy in ext2_read_link()
* Use user_memcpy in nfs fs_read_link()
* Use user_memcpy in reiserfs StreamReader::_ReadIndirectItem and
StreamReader::_ReadDirectItem
* Remove unused method Volume::ReadObject in reiserfs.
src/add-ons/kernel/file_systems/packagefs/nodes/UnpackingLeafNode.cpp:
src/add-ons/kernel/file_systems/packagefs/package_links/PackageLinkSymlink.cpp:
* Update UnpackingLeafNode::ReadSymlink and
PackageSymLink::ReadSymLink() to set the bufferSize out parameter to
the symlink length. Both of these are called by
packagefs_read_symlink.
* Use user_memcpy
src/add-ons/kernel/file_systems/netfs/client/netfs.cpp:
* netfs seems mostly unimplemented. Added a FIXME note for future
implementers so that they know to implement the correct behavior.
src/system/libroot/posix/unistd/link.c:
* readlinkat() was just wrapping _kern_read_link() because before this
patch it had expected posix behavior. But now it does not, so we
need to return the number of bytes written to the output
buffer.
src/build/libroot/fs.cpp:
* Update _kern_read_link() in the compatibility code to emulate the
Haiku behavior on the host system. This is done by using an
intermediate buffer that is guaranteed to fit the link contents and
returning its length. The intermediate buffer is copied into the
output buffer until there is no more room.
src/tests/kits/storage/SymLinkTest.cpp:
* This patch also resolves some test failures similar to those
resolved in ee8cf35f0 which fixed tests for BNode. The tests were
failing because Haiku's error checking is just better.
BeOS allowed constructing a BSymLink with BSymLink(BDirectory*,
const char*) with the entry name of "". The same is true of the
equivilant SetTo() method. The BSymLink object will appear valid
until you attempt to use it by, for example, calling the ReadLink
method, which will return B_BAD_VALUE.
Haiku does a more appropriate thing and returns B_ENTRY_NOT_FOUND,
for this constructor and the equivilant SetTo(BDirectory*, const
char*) method. This patch fixes these test assertions to match Haiku
behavior.
docs/develop/file_systems/overview.txt:
* Add notes for future filesystem driver implementers to call this
mistake when implementing fs_vnode_ops::read_symlink.
docs/user/drivers/fs_interface.dox:
* Fix documentation for fs_vnode_ops::read_symlink
Change-Id: I8bcb8b2a0c9333059c84ace15844c32d4efeed9d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2502
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>
We have quite a few GSoC projects around this, it would make sense to
have some documentation for people attempting them.
Add some generic overview of filesystems and how to test them.
