Move DeviceOpener class to a separate file.

It is used by several of the filesystems, so it seems a good idea to
move it to the shared/ directory.

UFS2, BFS, XFS, EXT2 and EXFAT are adjusted.

Change-Id: I493e37a1e7d3ae24251469f82befd985a3c1dbdd
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2489
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

bfs: erase ext2 superblock when initializing

Having valid superblocks from multiple filesystems on the same disk is
confusing, let's try to avoid that.

Change-Id: I1a58843d45ea52193a77faaf8dcc3ca6a049406e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1802
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

file_systems: Pass size argument to ioctl in a lot more places.

bfs: Fixed missing block allocator uninit in case of error

* If Volume::Mount() failed opening the root node, the Volume would be
destroyed regardless of the fact that the block allocator was
initializing the bitmap asynchronously.
* For a proper shutdown, the block allocator needs to be uninitialized
first.
* This should fix #15015.

Change-Id: Ice520a12c5c58c785f391009327becfb1f284bce
Reviewed-on: https://review.haiku-os.org/c/1501
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

bfs: split checkfs code into FileSystemVisitor and CheckVisitor

Another FileSystemVisitor implementation will be used for resizing

Change-Id: I2d5f47dcbefb4c76834487b194a99c6f5ae7de50
Reviewed-on: https://review.haiku-os.org/c/923
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

bfs: Print diagnostic message when disk size is too small

Change-Id: Ie7bff78b1b0c783bc74f1fe774ec31f8437257df
Reviewed-on: https://review.haiku-os.org/c/922
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

bfs: Never publish the index root node.

* This caused the volume to be un-unmountable when you created an index
on a non-indexed volume.

bfs: minor refactoring of hrev48308

- also additional error checks added, as suggested
by Axel Dörfler

bfs: only erase first sector when initializing

f9ac1e93fb1ba12163bff4128efb54d8e548e4a8 didn't take
into account that the superblock gets written back
from places other than Initialize(), resulting in
unbootable volumes.

Now the first sector will only be erased if the volume
is being initialized.

bfs: erase first sector when initialising new partition

* When writing the superblock, because it's at sector 1,
sector 0 doesn't get erased. As a result, if an
existing file system was present, identifying details
in sector 0 could cause the partition identifying code
to detect an old file system instead.

Fixes #11136.

Fix typos: super block -> superblock (#8974)

Signed-off-by: Przemysław Buczkowski <przemub@yahoo.pl>
Signed-off-by: Matt Madia <mattmadia@gmail.com>

Added Volume::IsValidInodeBlock().

* The method checks whether a block may be occupied by an inode, ie. is neither
part of the bitmap nor of the log, and would also fit on the disk.
* Also made disk_super_block::IsValid() const.

Revert the part of r43033 that tries to write the "be:volume_id" on mount. The
use of an attribute may cause an attribute directory access, causing a get_vnode
call that leads to KDL due to the mount not yet having completed as seen in
#8090. Moving the volume_ops initialization in bfs_mount earlier might make this
work, but it is a hack at most, as we can't really know what state the VFS is in
during a mount.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43229 a95241bf-73f2-0310-859d-f6bbb57e9c96

Pass an existing or created transaction to CreateVolumeID(). Hopefully it's correct this time. Axel?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43056 a95241bf-73f2-0310-859d-f6bbb57e9c96

Abide by the Coding Style Police.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43039 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add creation of a be:volume_id attribute on the root node as BeOS did, based on a patch by phcoder. Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43033 a95241bf-73f2-0310-859d-f6bbb57e9c96

added std::nothrow for some new calls, and initialize fCheckCookie


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42593 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied patch by Janito that solves a TODO and utilizes the actual device
block size to align the file map.
* This closes ticket #5707, thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36144 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Changed the query code again to send B_ENTRY_REMOVED/B_ENTRY_CREATED
notifications if an inode in a query result was moved/renamed - this time all
the information is correct, though.
* While I did not introduce B_ENTRY_MOVED for queries yet, this should make
adding it very simple (left as an excercise for the reader ;-))


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34317 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Always drop into the debugger if KDEBUG is used when BFS detects a corruption
that causes it switch to read-only mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31766 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The block allocator will no longer try to fix a missing allocation on a
read-only volume. This fixes bug #3432.
* Journal::ReplayLog() will now return an error on a read-only device, rendering
read-only dirty volumes unmountable.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31255 a95241bf-73f2-0310-859d-f6bbb57e9c96

* BFS allocated always full allocation groups in the bitmap, even if the last
group was a partial one. This caused bug #3963 (Be's BFS didn't do that).
* Added new BlockAllocator::CheckBlocks() that does not depend on allocation
group limits - this fixes the problematic check in
BlockAllocator::_Initialize() to see if the super block, the block bitmap,
and the log area are all allocated - this only worked if they all fit into
the first allocation group (which happens only with partitions with more
than 1 billion blocks, ie. 2 TB would already be problematic with a 2K block
size).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31248 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Cleanup of how the time is converted between bfs_inode and the outside world:
there is now a couple of conversion functions, and I changed the type from
bigtime_t to int64, as it's not what a bigtime_t would usually contain, but
some shift magic in order to make duplicate index entries less likely.
* We now correctly fill in the timespec in struct stat as good as possible; the
12 of the 16 possible bits are used for the nano second value. The lower 8
bits are used to avoid the duplicate index entries. Only if the nano second
time is 0, the lower 12 bits are used to achieve that.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31057 a95241bf-73f2-0310-859d-f6bbb57e9c96

Have BFS create the BEOS:APP_SIG index by default also. Otherwise launching applications by signature off any partition other than one created via the build system will fail by default (since that one currently adds the index manually in build_haiku_image).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29724 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Inodes are no longer trimmed from the checking thread. This should fix bug
#3190.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28845 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced Chain with the new SinglyLinkedList.
* Renamed openModeToAccess() to open_mode_to_access().
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26718 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26714 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed no longer needed IOCTL_FILE_UNCACHED_IO definition.
* Some cleanup, no functional change.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26706 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Unmounting a volume didn't wait for the block allocator's initializer thread.
* This fixed bug #2541.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26679 a95241bf-73f2-0310-859d-f6bbb57e9c96

Also destroy the query lock in the Volume destructor.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26477 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed the home-brewn locking classes in BFS besides the read/write lock
(for now).
* Inode::fSmallDataLock is now a recursive_lock, Journal::fLock is now
a recursive_lock, too, Journal::fEntriesLock is now a mutex, as is
BPlusTree::fIteratorLock.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26298 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed a now unnecessary stat() on the device to be mounted.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26153 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Made super block log handling endian-safe.
* Made all debugging functions endian-safe.
* Added tracing for log entries.
* Added new KDL command "bfs_journal" to dump all pending log entries.
* When BFS_DEBUGGER_COMMANDS is defined, the LogEntry class will also track
the transaction ID it belonged to.
* The "bfs" KDL command now sets some useful debugger variables.
* The "bfs_allocator" KDL command now accepts the group index as 3rd argument.
* Renamed Journal::_TransactionListener() to _TransactionIdle(), as that's
all it is for.
* Removed TODO comment in Volume::WriteSuperBlock(), as it's actually not true.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24852 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reorganized the FS interface a little:
- Moved most file_system_module_info hooks into separate structures.
Those that operate on mounted volumes to fs_volume_ops, those
operating on a vnode to fs_vnode_ops.
- Got rid of the fs_volume, fs_cookie, fs_vnode typedefs. We use void*
again.
- Instead of a void* volume and node cookie hooks are passed a
fs_volume and fs_vnode structure pointer, which contain the cookie
and an ops pointer (fs_volume a few more things).
- The VFS {new,publish,get,...}_vnode() functions take a fs_volume*
instead of the volume ID. So does vfs_get_fs_node_from_path().
- Added type and flags arguments to publish_vnode() and the
get_vnode() hook and removed the type argument from lookup() hook.
Added vnode::type using formerly unused bits to store the node type.
Simplified a few things in the VFS due to the now always available
node type.
- Added fs_volume_ops::{create,delete}_sub_vnode() and
fs_vnode_ops::get_super_vnode() hooks. They are used to support file
system layers, e.g. allowing to extend an FS not supporting BeOS
attribute with attribute support. Needs some more work in the VFS.
- Added fs_vnode_ops::create_special_node() hook for creating special
nodes (e.g. FIFOs).
* Adjusted the built-in file systems and BFS according to the interface
changes. Removed all other FSs from the image for the time being.
We'll see whether further API changes are necessary before porting
them.
* Adjusted the bfs_shell accordingly.
* Implemented create_special_node() in rootfs to support special nodes.
* Added support for FIFOs:
- Added syscall _kern_create_fifo() (used by mkfifo()), which creates
a special node (type S_IFIFO) in the respective file system.
- When a special node is published the VFS creates a respective sub
node. Currently only FIFOs are supported.
- Added a little support for FIFO subnodes by using functionality from
the pipefs.
- Added mkfifo to the image. It can create FIFOs in the rootfs, but
the FIFOs aren't really usable ATM, since they still work like
pipes, i.e. readers and writers need to have them open at the same
time.
* Some smaller changes in the VFS:
- Made the *_CALL macros nicer to use (vargs).
- Refactored FS entry lookup into new function lookup_dir_entry().
- create_vnode() no longer just calls the FS create() hook. First it
looks up the entry and uses open_vnode(), if it already exists. This
is necessary for two reasons: 1) The FS might not support create()
while still allowing to open() entries. 2) When the FS has other
layers on to of it (or the respective node) it might not be
responsible for opening the node.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24816 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Resolved a TODO: determine the log size depending on the size of the volume.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24797 a95241bf-73f2-0310-859d-f6bbb57e9c96

* As briefly discussed in ticket #2024, I've changed BFS to allow to mount
volumes with a broken log. It will only allow the volume read-only then,
though (unlike Be's BFS), as your disk could be corrupt.
* Added InitCheck() method to the RecursiveLock class, and now only check
this one in Journal::InitCheck() instead of also replaying the log there;
this is now done directly in Volume::Mount().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24795 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The DeviceOpener class was leaking its block cache; RemoveCache()
would never do anything as fBlockCache was never set.
* DeviceOpener::InitCache() did not always correctly propagate the
read-only flag.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24572 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved error reporting when mounting a volume failed, especially when
the log couldn't be replayed.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24400 a95241bf-73f2-0310-859d-f6bbb57e9c96

The log replay code now checks if a super block is valid before the current
one gets overwritten; if the log contains invalid data, it will no longer
render the whole disk unreadable. This should have helped to prevent bug #1911
(but of course the problem that there is invalid data in the log in the first
place remains).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24381 a95241bf-73f2-0310-859d-f6bbb57e9c96

Corrected patch to fix warnings when compiled with GCC 4, thanks Vasilis!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24279 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Ever since I added O_NOCACHE to the flags BFS is using to open its
device, the read-only detection did not work anymore; I've now added
handy methods to correctly check for this. This fixes bug #1829.
* Volume::Initialize() now also checks if the device could really be
opened read/write.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24212 a95241bf-73f2-0310-859d-f6bbb57e9c96

* BFS now always writes back the whole block when it writes the super block.
* Therefore, I've added an I/O control that let's it update the boot block
part of this block, so that makebootable can use it on a mounted volume
(this will probably be moved into a disk system API later).
* Added user_memcpy() to the fs_shell.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23082 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added mapping of dup() in the FS shell.
* Adjusted the FS initialize() hook to have FD and partition_id
parameters like the other hooks instead of the partition path.
* Adjusted initialization in BFS accordingly.
* Implemented the FS initialization method in KFileSystem.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21788 a95241bf-73f2-0310-859d-f6bbb57e9c96

Got rid of vnode_id and mount_id, replaced with ino_t and dev_t.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21485 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Inode::Create() now has a "_created" parameter that will be set to true in case a
node has been created - this is now used in bfs_create() to suppress the new entry
notification in case the file already existed.
* Implemented parameter parsing in bfs_initialize() - does not work in the new bfs_shell
though, as it currently misses driver_settings functionality.
* Attribute::Create() and Attribute::Open() will now honour O_TRUNC correctly.
* Note: Inode::WriteAttribute() still follows R5 semantics for small_data attributes
in this regard and must be fixed (I've opened ticket #1242 for this).
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21204 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed unused code when USER is defined - the fs_shell no longer does this, but
provides a kernel emulation layer.
* Renamed all private BPlusTree methods to have the '_' prefix.
* Removed useless set_sem_owner() from Lock.h - all semaphores created in the kernel
always belong to the system team automatically.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21054 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed a bug introduced with big-endian fixes in r17557; the super block's blocks_per_ag
field was always 1, and therefore, the last allocation group could grow too large.
Thanks to Samuel Rodriguez Perez for reporting the error (bfs_shell was crashing on
larger images).
* Minor cleanup in BlockAllocator::_Initialize().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21053 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added very basic volume initialization support.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20899 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Prepared the BFS sources to be used with the new FS shell:
- Moved all inclusions of system headers into a new
system_dependencies.h header, which conditionally either includes
these or the FS shell headers.
- Fixed compiler warnings related to printf-like functions (int32 is
int, not long on non-BeOS platforms).
* Build a new bfs_shell. Compiles and links, but does nothing ATM.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20860 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made sources UserlandFS friendly. Can't be used with the fs_shell ATM,
anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20462 a95241bf-73f2-0310-859d-f6bbb57e9c96

DeviceOpener::Open() now returns the actual error instead of -1, as suggested
by Korli.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18727 a95241bf-73f2-0310-859d-f6bbb57e9c96

* You can now create the block cache in read-only mode (using an additional
parameter during construction).
* Doing so will now result in a kernel panic whenever your file system tries to
write to a block.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18719 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more PPC fixes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17714 a95241bf-73f2-0310-859d-f6bbb57e9c96

Adopted the PPC big endian fixes for disk_super_block::Initialize() and made them
a bit nicer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17557 a95241bf-73f2-0310-859d-f6bbb57e9c96

* When mounting an image, BFS no longer tries to set the file into uncached mode - this
will waste some memory (as the data will be cached twice), but unlike BeOS, it cannot
deadlock the cache, so it's safe to be used. In other words, mounting images is now
working as expected.
* a BFS FATAL() condition no longer results in a KDL; this seemed to confuse anybody :)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17336 a95241bf-73f2-0310-859d-f6bbb57e9c96

fix comment


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16526 a95241bf-73f2-0310-859d-f6bbb57e9c96

update code in #ifdef USER, should be needed when we want to use Volume::Initialize()


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16379 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the "reopen when read-only" logic into the DeviceOpener class.
Since CD-ROMs let open themselves read/write, it now also checks the device
geometry, and will make sure the device is opened read-only if the geometry
structure says so - this should reduce the number of write errors you get
during boot :-)
Volume::fFlags is now always correctly maintained.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14414 a95241bf-73f2-0310-859d-f6bbb57e9c96

We now have a consistent scheme what the file system should do with its root
node: like in BeOS, it *must* own the root node (ie. via publish_vnode()),
unlike in BeOS, it must also drop that reference on unmount (symmetrical
behaviour definitely makes more sense to me than the Be way).
Since all existing file systems for Haiku behaved differently, I brought them
in line (only pipefs already adhered to that new standard for some reason,
rootfs did only released the node, devfs did nothing - despite it's probably
not really useful to be able to unmount them).
fs_mount() will now panic if a file system does not do this correctly (useful
for file system developing).
Unmounting is now theoretically working again: when trying to unmount a BFS
volume, the kernel crashes in the block cache destruction... (but that's work
for tomorrow).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14017 a95241bf-73f2-0310-859d-f6bbb57e9c96

Needs to use publish_vnode() now (since the vnode can be accessed immediately).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11721 a95241bf-73f2-0310-859d-f6bbb57e9c96

Big update while moving over completely to the Haiku kernel:
- Ported over BFS to the new cache API
- Inode no longer inherits from CachedBlock, and therefore, no longer
keeps the whole inode block in memory. It now has a copy of the bfs_inode
structure in memory instead. This has a number of advantages but also some
disadvantages, so it might be reverted later, even if it's unlikely.
- Added a NodeGetter class that can be used whenever the real block needs
to be accessed (ie. for attributes)
- Changed *transaction to &transaction where possible
- Removed support for KEEP_WRONG_DIRENT_RECLEN
- Removed support for uncached file access since that's no longer needed
- Fixed some endian issues in bfs_write_stat()
- Removed the install BFS rules, since they don't make any sense anymore
(unless you are running Haiku ;-))

Note, logged streams are not supported anymore right now. Also, the
transaction code is pretty simple and slow - it will be improved later
on. Attribute code is pretty much untested in the new environment.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10053 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented the Disk Device Manager Scanning API. It's currently exported
as a separate module, but might be merged with the standard FS API.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9504 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed several bugs during the mount process:
- DeviceOpener::GetSize() didn't work correctly for devices - the size returned
was the block count. Also, it didn't expand the computation to 64 bits
- the check if the disk size was large enough make use of BlockShift() which
access the fBlockShift variable which wasn't initialized at that point
- if new_vnode() failed, a wrong error code was returned
- it will now write a different error message if the root node creation
failed before new_vnode() was called.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7841 a95241bf-73f2-0310-859d-f6bbb57e9c96

We're now using fs_interface.h instead of fsproto.h - doesn't change much here :)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7823 a95241bf-73f2-0310-859d-f6bbb57e9c96

It's now <util/kernel_cpp.h> rather than <kernel_cpp.h>.
Forgot to commit that...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7442 a95241bf-73f2-0310-859d-f6bbb57e9c96

The BeOS cache will no longer be turned off in case of a mounted image when
NO_FILE_UNCACHED_IO is defined at compile time.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7353 a95241bf-73f2-0310-859d-f6bbb57e9c96

Don't throw away any blocks at the end of the disk (we also support truncated
allocation groups).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6535 a95241bf-73f2-0310-859d-f6bbb57e9c96

blocks_per_ag has to be doubled in each iteration (was messing up the
initialization of bigger volumes).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6533 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now calls the new fs_shell only call kill_device_vnodes() in Volume::Initialize()
to be able to remove the cache correctly (without issuing any warnings).
The Volume::Initialize() method is now only defined in USER mode (of course, this
will change in OpenBeOS).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6481 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed working with volume without indices - in case of a corrupt indices node
the Inode will now be deleted, and it will only be tried to be instantiated
if the indices block_run is not zeroed out.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6406 a95241bf-73f2-0310-859d-f6bbb57e9c96

The standard indices are now created when a volume is initialized.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6398 a95241bf-73f2-0310-859d-f6bbb57e9c96

Standard log size is 2048 blocks, not 4096...
Added a ToDo comment so that I don't forget to add the standard indices :)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6381 a95241bf-73f2-0310-859d-f6bbb57e9c96

Wrote a simple algorithm to create appropriate allocation group values
for newly initialized disks. Should work for all sizes :-)
Documented a bit what good values actually mean.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6339 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed the Volume::Mount() call; BlockAllocator::Initialize() was never
called since last change (could mount volumes, but cannot write to them
anymore without errors).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6328 a95241bf-73f2-0310-859d-f6bbb57e9c96

Inode::Create() now prints out a reason if new_vnode() failed.
If the parent is NULL, Inode::Create() will now set node::parent to
the node itself, like BFS is doing it (for root and indices nodes only).
Added a temporary hack in Volume::Initialize() to get the inodes freed.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6320 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed debug output, set mode of newly created root node to 0755 instead of 0777.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6319 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the functionality of Volume::IsSuperBlockValid() into the new
disk_super_block::IsValid() method.
There is now a disk_super_block::Initialize() method that sets up
a super block for creating a new file system on it - it's currently
hard coded to produce correct results for 10 MB images, though;
the allocation group stuff has to be done a bit more flexible :)

Added a DeviceOpener class that simplifies Volume::Mount() a bit and
fixes some problems of it (forgot to call close() once or twice).
Implemented the new Volume::Initialize() method that completely
covers the mkbfs functionality.

Fixed the broken Volume::ToBlockRun() method - AFAICT it has only
be used by Volume::CreateIndicesRoot() and in dump_bplustree_node
so far (should not have been critical, as the former was probably
never called yet [only if you had tried to create an index on a
BFS volume that didn't have indices yet]).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6313 a95241bf-73f2-0310-859d-f6bbb57e9c96

Switched to kernel_cpp.h/cpp.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6291 a95241bf-73f2-0310-859d-f6bbb57e9c96

Bunches of changes to make mwcc like the code. I also coded an _atomic_set() and _atomic_test_and_set() for PowerPC. Of course, there's already one in the kernel tree, but mine's better. :P Now builds (and works, after a fashion) on R5 PowerPC.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5280 a95241bf-73f2-0310-859d-f6bbb57e9c96

The file system is now almost endian-aware.
Used lazy unreadable conversion: ==, !=, == 0, != 0 are endian-safe
and don't need byte swapping.
If the platform endian differs from the one selected at compile time,
it will mount all volumes read-only for now.
Uncomment BFS_BIG_ENDIAN_ONLY in the Jamfile to build the big endian
version under x86.
No matter on what platform, the compilation defaults to build BFS as
little endian file system (see bfs_endian.h for details).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4715 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed queries a bit more (maybe even completely...). In several situations,
the old attribute value wasn't evaluated at all.
Also, Index::Update() got a type code of zero, instead of the real value
in situations where this didn't make any sense.
Minor cleanup in kernel_interface.cpp.
New method Volume::CheckForLiveQuery() that checks if there is a live query
depending on the specified attribute - not yet implemented, but already used;
always returns "true" right now, which doesn't cause any harm but reducing
the speed lightly.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3394 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed wrong storage classifier (was LL instead of UL).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2841 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now includes fs_volume.h rather than unistd.h for B_MOUNT_READ_ONLY.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2830 a95241bf-73f2-0310-859d-f6bbb57e9c96

Switched from Inode::IsDirectory() to Inode::IsContainer() where necessary.
Now makes use of the changed Inode::Create() logic.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2031 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed Volume::IsValidBlockRun() to Volume::ValidateBlockRun() because it
returns a status_t, not a boolean value.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1988 a95241bf-73f2-0310-859d-f6bbb57e9c96

Volume::Ummount() now use the NO_WRITES mode for remove_cached_device_blocks()
if the volume is read-only.
Some style changes.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1600 a95241bf-73f2-0310-859d-f6bbb57e9c96

Initial revision


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@639 a95241bf-73f2-0310-859d-f6bbb57e9c96

bfs: minor refactoring of hrev48308

- also additional error checks added, as suggested
by Axel Dörfler

bfs: only erase first sector when initializing

f9ac1e93fb1ba12163bff4128efb54d8e548e4a8 didn't take
into account that the superblock gets written back
from places other than Initialize(), resulting in
unbootable volumes.

Now the first sector will only be erased if the volume
is being initialized.

bfs: erase first sector when initialising new partition

* When writing the superblock, because it's at sector 1,
sector 0 doesn't get erased. As a result, if an
existing file system was present, identifying details
in sector 0 could cause the partition identifying code
to detect an old file system instead.

Fixes #11136.

Fix typos: super block -> superblock (#8974)

Signed-off-by: Przemysław Buczkowski <przemub@yahoo.pl>
Signed-off-by: Matt Madia <mattmadia@gmail.com>

Added Volume::IsValidInodeBlock().

* The method checks whether a block may be occupied by an inode, ie. is neither
part of the bitmap nor of the log, and would also fit on the disk.
* Also made disk_super_block::IsValid() const.

Revert the part of r43033 that tries to write the "be:volume_id" on mount. The
use of an attribute may cause an attribute directory access, causing a get_vnode
call that leads to KDL due to the mount not yet having completed as seen in
#8090. Moving the volume_ops initialization in bfs_mount earlier might make this
work, but it is a hack at most, as we can't really know what state the VFS is in
during a mount.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43229 a95241bf-73f2-0310-859d-f6bbb57e9c96

Pass an existing or created transaction to CreateVolumeID(). Hopefully it's correct this time. Axel?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43056 a95241bf-73f2-0310-859d-f6bbb57e9c96

Abide by the Coding Style Police.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43039 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add creation of a be:volume_id attribute on the root node as BeOS did, based on a patch by phcoder. Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43033 a95241bf-73f2-0310-859d-f6bbb57e9c96

added std::nothrow for some new calls, and initialize fCheckCookie


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42593 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied patch by Janito that solves a TODO and utilizes the actual device
block size to align the file map.
* This closes ticket #5707, thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36144 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Changed the query code again to send B_ENTRY_REMOVED/B_ENTRY_CREATED
notifications if an inode in a query result was moved/renamed - this time all
the information is correct, though.
* While I did not introduce B_ENTRY_MOVED for queries yet, this should make
adding it very simple (left as an excercise for the reader ;-))


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34317 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Always drop into the debugger if KDEBUG is used when BFS detects a corruption
that causes it switch to read-only mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31766 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The block allocator will no longer try to fix a missing allocation on a
read-only volume. This fixes bug #3432.
* Journal::ReplayLog() will now return an error on a read-only device, rendering
read-only dirty volumes unmountable.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31255 a95241bf-73f2-0310-859d-f6bbb57e9c96

* BFS allocated always full allocation groups in the bitmap, even if the last
group was a partial one. This caused bug #3963 (Be's BFS didn't do that).
* Added new BlockAllocator::CheckBlocks() that does not depend on allocation
group limits - this fixes the problematic check in
BlockAllocator::_Initialize() to see if the super block, the block bitmap,
and the log area are all allocated - this only worked if they all fit into
the first allocation group (which happens only with partitions with more
than 1 billion blocks, ie. 2 TB would already be problematic with a 2K block
size).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31248 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Cleanup of how the time is converted between bfs_inode and the outside world:
there is now a couple of conversion functions, and I changed the type from
bigtime_t to int64, as it's not what a bigtime_t would usually contain, but
some shift magic in order to make duplicate index entries less likely.
* We now correctly fill in the timespec in struct stat as good as possible; the
12 of the 16 possible bits are used for the nano second value. The lower 8
bits are used to avoid the duplicate index entries. Only if the nano second
time is 0, the lower 12 bits are used to achieve that.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31057 a95241bf-73f2-0310-859d-f6bbb57e9c96

Have BFS create the BEOS:APP_SIG index by default also. Otherwise launching applications by signature off any partition other than one created via the build system will fail by default (since that one currently adds the index manually in build_haiku_image).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29724 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Inodes are no longer trimmed from the checking thread. This should fix bug
#3190.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28845 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced Chain with the new SinglyLinkedList.
* Renamed openModeToAccess() to open_mode_to_access().
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26718 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26714 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed no longer needed IOCTL_FILE_UNCACHED_IO definition.
* Some cleanup, no functional change.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26706 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Unmounting a volume didn't wait for the block allocator's initializer thread.
* This fixed bug #2541.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26679 a95241bf-73f2-0310-859d-f6bbb57e9c96

Also destroy the query lock in the Volume destructor.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26477 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed the home-brewn locking classes in BFS besides the read/write lock
(for now).
* Inode::fSmallDataLock is now a recursive_lock, Journal::fLock is now
a recursive_lock, too, Journal::fEntriesLock is now a mutex, as is
BPlusTree::fIteratorLock.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26298 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed a now unnecessary stat() on the device to be mounted.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26153 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Made super block log handling endian-safe.
* Made all debugging functions endian-safe.
* Added tracing for log entries.
* Added new KDL command "bfs_journal" to dump all pending log entries.
* When BFS_DEBUGGER_COMMANDS is defined, the LogEntry class will also track
the transaction ID it belonged to.
* The "bfs" KDL command now sets some useful debugger variables.
* The "bfs_allocator" KDL command now accepts the group index as 3rd argument.
* Renamed Journal::_TransactionListener() to _TransactionIdle(), as that's
all it is for.
* Removed TODO comment in Volume::WriteSuperBlock(), as it's actually not true.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24852 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reorganized the FS interface a little:
- Moved most file_system_module_info hooks into separate structures.
Those that operate on mounted volumes to fs_volume_ops, those
operating on a vnode to fs_vnode_ops.
- Got rid of the fs_volume, fs_cookie, fs_vnode typedefs. We use void*
again.
- Instead of a void* volume and node cookie hooks are passed a
fs_volume and fs_vnode structure pointer, which contain the cookie
and an ops pointer (fs_volume a few more things).
- The VFS {new,publish,get,...}_vnode() functions take a fs_volume*
instead of the volume ID. So does vfs_get_fs_node_from_path().
- Added type and flags arguments to publish_vnode() and the
get_vnode() hook and removed the type argument from lookup() hook.
Added vnode::type using formerly unused bits to store the node type.
Simplified a few things in the VFS due to the now always available
node type.
- Added fs_volume_ops::{create,delete}_sub_vnode() and
fs_vnode_ops::get_super_vnode() hooks. They are used to support file
system layers, e.g. allowing to extend an FS not supporting BeOS
attribute with attribute support. Needs some more work in the VFS.
- Added fs_vnode_ops::create_special_node() hook for creating special
nodes (e.g. FIFOs).
* Adjusted the built-in file systems and BFS according to the interface
changes. Removed all other FSs from the image for the time being.
We'll see whether further API changes are necessary before porting
them.
* Adjusted the bfs_shell accordingly.
* Implemented create_special_node() in rootfs to support special nodes.
* Added support for FIFOs:
- Added syscall _kern_create_fifo() (used by mkfifo()), which creates
a special node (type S_IFIFO) in the respective file system.
- When a special node is published the VFS creates a respective sub
node. Currently only FIFOs are supported.
- Added a little support for FIFO subnodes by using functionality from
the pipefs.
- Added mkfifo to the image. It can create FIFOs in the rootfs, but
the FIFOs aren't really usable ATM, since they still work like
pipes, i.e. readers and writers need to have them open at the same
time.
* Some smaller changes in the VFS:
- Made the *_CALL macros nicer to use (vargs).
- Refactored FS entry lookup into new function lookup_dir_entry().
- create_vnode() no longer just calls the FS create() hook. First it
looks up the entry and uses open_vnode(), if it already exists. This
is necessary for two reasons: 1) The FS might not support create()
while still allowing to open() entries. 2) When the FS has other
layers on to of it (or the respective node) it might not be
responsible for opening the node.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24816 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Resolved a TODO: determine the log size depending on the size of the volume.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24797 a95241bf-73f2-0310-859d-f6bbb57e9c96

* As briefly discussed in ticket #2024, I've changed BFS to allow to mount
volumes with a broken log. It will only allow the volume read-only then,
though (unlike Be's BFS), as your disk could be corrupt.
* Added InitCheck() method to the RecursiveLock class, and now only check
this one in Journal::InitCheck() instead of also replaying the log there;
this is now done directly in Volume::Mount().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24795 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The DeviceOpener class was leaking its block cache; RemoveCache()
would never do anything as fBlockCache was never set.
* DeviceOpener::InitCache() did not always correctly propagate the
read-only flag.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24572 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved error reporting when mounting a volume failed, especially when
the log couldn't be replayed.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24400 a95241bf-73f2-0310-859d-f6bbb57e9c96

The log replay code now checks if a super block is valid before the current
one gets overwritten; if the log contains invalid data, it will no longer
render the whole disk unreadable. This should have helped to prevent bug #1911
(but of course the problem that there is invalid data in the log in the first
place remains).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24381 a95241bf-73f2-0310-859d-f6bbb57e9c96

Corrected patch to fix warnings when compiled with GCC 4, thanks Vasilis!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24279 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Ever since I added O_NOCACHE to the flags BFS is using to open its
device, the read-only detection did not work anymore; I've now added
handy methods to correctly check for this. This fixes bug #1829.
* Volume::Initialize() now also checks if the device could really be
opened read/write.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24212 a95241bf-73f2-0310-859d-f6bbb57e9c96

* BFS now always writes back the whole block when it writes the super block.
* Therefore, I've added an I/O control that let's it update the boot block
part of this block, so that makebootable can use it on a mounted volume
(this will probably be moved into a disk system API later).
* Added user_memcpy() to the fs_shell.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23082 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added mapping of dup() in the FS shell.
* Adjusted the FS initialize() hook to have FD and partition_id
parameters like the other hooks instead of the partition path.
* Adjusted initialization in BFS accordingly.
* Implemented the FS initialization method in KFileSystem.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21788 a95241bf-73f2-0310-859d-f6bbb57e9c96

Got rid of vnode_id and mount_id, replaced with ino_t and dev_t.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21485 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Inode::Create() now has a "_created" parameter that will be set to true in case a
node has been created - this is now used in bfs_create() to suppress the new entry
notification in case the file already existed.
* Implemented parameter parsing in bfs_initialize() - does not work in the new bfs_shell
though, as it currently misses driver_settings functionality.
* Attribute::Create() and Attribute::Open() will now honour O_TRUNC correctly.
* Note: Inode::WriteAttribute() still follows R5 semantics for small_data attributes
in this regard and must be fixed (I've opened ticket #1242 for this).
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21204 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed unused code when USER is defined - the fs_shell no longer does this, but
provides a kernel emulation layer.
* Renamed all private BPlusTree methods to have the '_' prefix.
* Removed useless set_sem_owner() from Lock.h - all semaphores created in the kernel
always belong to the system team automatically.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21054 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed a bug introduced with big-endian fixes in r17557; the super block's blocks_per_ag
field was always 1, and therefore, the last allocation group could grow too large.
Thanks to Samuel Rodriguez Perez for reporting the error (bfs_shell was crashing on
larger images).
* Minor cleanup in BlockAllocator::_Initialize().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21053 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added very basic volume initialization support.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20899 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Prepared the BFS sources to be used with the new FS shell:
- Moved all inclusions of system headers into a new
system_dependencies.h header, which conditionally either includes
these or the FS shell headers.
- Fixed compiler warnings related to printf-like functions (int32 is
int, not long on non-BeOS platforms).
* Build a new bfs_shell. Compiles and links, but does nothing ATM.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20860 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made sources UserlandFS friendly. Can't be used with the fs_shell ATM,
anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20462 a95241bf-73f2-0310-859d-f6bbb57e9c96

DeviceOpener::Open() now returns the actual error instead of -1, as suggested
by Korli.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18727 a95241bf-73f2-0310-859d-f6bbb57e9c96

* You can now create the block cache in read-only mode (using an additional
parameter during construction).
* Doing so will now result in a kernel panic whenever your file system tries to
write to a block.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18719 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more PPC fixes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17714 a95241bf-73f2-0310-859d-f6bbb57e9c96

Adopted the PPC big endian fixes for disk_super_block::Initialize() and made them
a bit nicer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17557 a95241bf-73f2-0310-859d-f6bbb57e9c96

* When mounting an image, BFS no longer tries to set the file into uncached mode - this
will waste some memory (as the data will be cached twice), but unlike BeOS, it cannot
deadlock the cache, so it's safe to be used. In other words, mounting images is now
working as expected.
* a BFS FATAL() condition no longer results in a KDL; this seemed to confuse anybody :)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17336 a95241bf-73f2-0310-859d-f6bbb57e9c96

fix comment


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16526 a95241bf-73f2-0310-859d-f6bbb57e9c96

update code in #ifdef USER, should be needed when we want to use Volume::Initialize()


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16379 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the "reopen when read-only" logic into the DeviceOpener class.
Since CD-ROMs let open themselves read/write, it now also checks the device
geometry, and will make sure the device is opened read-only if the geometry
structure says so - this should reduce the number of write errors you get
during boot :-)
Volume::fFlags is now always correctly maintained.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14414 a95241bf-73f2-0310-859d-f6bbb57e9c96

We now have a consistent scheme what the file system should do with its root
node: like in BeOS, it *must* own the root node (ie. via publish_vnode()),
unlike in BeOS, it must also drop that reference on unmount (symmetrical
behaviour definitely makes more sense to me than the Be way).
Since all existing file systems for Haiku behaved differently, I brought them
in line (only pipefs already adhered to that new standard for some reason,
rootfs did only released the node, devfs did nothing - despite it's probably
not really useful to be able to unmount them).
fs_mount() will now panic if a file system does not do this correctly (useful
for file system developing).
Unmounting is now theoretically working again: when trying to unmount a BFS
volume, the kernel crashes in the block cache destruction... (but that's work
for tomorrow).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14017 a95241bf-73f2-0310-859d-f6bbb57e9c96

Needs to use publish_vnode() now (since the vnode can be accessed immediately).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11721 a95241bf-73f2-0310-859d-f6bbb57e9c96

Big update while moving over completely to the Haiku kernel:
- Ported over BFS to the new cache API
- Inode no longer inherits from CachedBlock, and therefore, no longer
keeps the whole inode block in memory. It now has a copy of the bfs_inode
structure in memory instead. This has a number of advantages but also some
disadvantages, so it might be reverted later, even if it's unlikely.
- Added a NodeGetter class that can be used whenever the real block needs
to be accessed (ie. for attributes)
- Changed *transaction to &transaction where possible
- Removed support for KEEP_WRONG_DIRENT_RECLEN
- Removed support for uncached file access since that's no longer needed
- Fixed some endian issues in bfs_write_stat()
- Removed the install BFS rules, since they don't make any sense anymore
(unless you are running Haiku ;-))

Note, logged streams are not supported anymore right now. Also, the
transaction code is pretty simple and slow - it will be improved later
on. Attribute code is pretty much untested in the new environment.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10053 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented the Disk Device Manager Scanning API. It's currently exported
as a separate module, but might be merged with the standard FS API.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9504 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed several bugs during the mount process:
- DeviceOpener::GetSize() didn't work correctly for devices - the size returned
was the block count. Also, it didn't expand the computation to 64 bits
- the check if the disk size was large enough make use of BlockShift() which
access the fBlockShift variable which wasn't initialized at that point
- if new_vnode() failed, a wrong error code was returned
- it will now write a different error message if the root node creation
failed before new_vnode() was called.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7841 a95241bf-73f2-0310-859d-f6bbb57e9c96

We're now using fs_interface.h instead of fsproto.h - doesn't change much here :)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7823 a95241bf-73f2-0310-859d-f6bbb57e9c96

It's now <util/kernel_cpp.h> rather than <kernel_cpp.h>.
Forgot to commit that...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7442 a95241bf-73f2-0310-859d-f6bbb57e9c96

The BeOS cache will no longer be turned off in case of a mounted image when
NO_FILE_UNCACHED_IO is defined at compile time.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7353 a95241bf-73f2-0310-859d-f6bbb57e9c96

Don't throw away any blocks at the end of the disk (we also support truncated
allocation groups).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6535 a95241bf-73f2-0310-859d-f6bbb57e9c96

blocks_per_ag has to be doubled in each iteration (was messing up the
initialization of bigger volumes).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6533 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now calls the new fs_shell only call kill_device_vnodes() in Volume::Initialize()
to be able to remove the cache correctly (without issuing any warnings).
The Volume::Initialize() method is now only defined in USER mode (of course, this
will change in OpenBeOS).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6481 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed working with volume without indices - in case of a corrupt indices node
the Inode will now be deleted, and it will only be tried to be instantiated
if the indices block_run is not zeroed out.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6406 a95241bf-73f2-0310-859d-f6bbb57e9c96

The standard indices are now created when a volume is initialized.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6398 a95241bf-73f2-0310-859d-f6bbb57e9c96

Standard log size is 2048 blocks, not 4096...
Added a ToDo comment so that I don't forget to add the standard indices :)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6381 a95241bf-73f2-0310-859d-f6bbb57e9c96

Wrote a simple algorithm to create appropriate allocation group values
for newly initialized disks. Should work for all sizes :-)
Documented a bit what good values actually mean.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6339 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed the Volume::Mount() call; BlockAllocator::Initialize() was never
called since last change (could mount volumes, but cannot write to them
anymore without errors).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6328 a95241bf-73f2-0310-859d-f6bbb57e9c96

Inode::Create() now prints out a reason if new_vnode() failed.
If the parent is NULL, Inode::Create() will now set node::parent to
the node itself, like BFS is doing it (for root and indices nodes only).
Added a temporary hack in Volume::Initialize() to get the inodes freed.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6320 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed debug output, set mode of newly created root node to 0755 instead of 0777.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6319 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the functionality of Volume::IsSuperBlockValid() into the new
disk_super_block::IsValid() method.
There is now a disk_super_block::Initialize() method that sets up
a super block for creating a new file system on it - it's currently
hard coded to produce correct results for 10 MB images, though;
the allocation group stuff has to be done a bit more flexible :)

Added a DeviceOpener class that simplifies Volume::Mount() a bit and
fixes some problems of it (forgot to call close() once or twice).
Implemented the new Volume::Initialize() method that completely
covers the mkbfs functionality.

Fixed the broken Volume::ToBlockRun() method - AFAICT it has only
be used by Volume::CreateIndicesRoot() and in dump_bplustree_node
so far (should not have been critical, as the former was probably
never called yet [only if you had tried to create an index on a
BFS volume that didn't have indices yet]).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6313 a95241bf-73f2-0310-859d-f6bbb57e9c96

Switched to kernel_cpp.h/cpp.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6291 a95241bf-73f2-0310-859d-f6bbb57e9c96

Bunches of changes to make mwcc like the code. I also coded an _atomic_set() and _atomic_test_and_set() for PowerPC. Of course, there's already one in the kernel tree, but mine's better. :P Now builds (and works, after a fashion) on R5 PowerPC.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5280 a95241bf-73f2-0310-859d-f6bbb57e9c96

The file system is now almost endian-aware.
Used lazy unreadable conversion: ==, !=, == 0, != 0 are endian-safe
and don't need byte swapping.
If the platform endian differs from the one selected at compile time,
it will mount all volumes read-only for now.
Uncomment BFS_BIG_ENDIAN_ONLY in the Jamfile to build the big endian
version under x86.
No matter on what platform, the compilation defaults to build BFS as
little endian file system (see bfs_endian.h for details).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4715 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed queries a bit more (maybe even completely...). In several situations,
the old attribute value wasn't evaluated at all.
Also, Index::Update() got a type code of zero, instead of the real value
in situations where this didn't make any sense.
Minor cleanup in kernel_interface.cpp.
New method Volume::CheckForLiveQuery() that checks if there is a live query
depending on the specified attribute - not yet implemented, but already used;
always returns "true" right now, which doesn't cause any harm but reducing
the speed lightly.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3394 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixed wrong storage classifier (was LL instead of UL).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2841 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now includes fs_volume.h rather than unistd.h for B_MOUNT_READ_ONLY.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2830 a95241bf-73f2-0310-859d-f6bbb57e9c96

Switched from Inode::IsDirectory() to Inode::IsContainer() where necessary.
Now makes use of the changed Inode::Create() logic.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2031 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed Volume::IsValidBlockRun() to Volume::ValidateBlockRun() because it
returns a status_t, not a boolean value.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1988 a95241bf-73f2-0310-859d-f6bbb57e9c96

Volume::Ummount() now use the NO_WRITES mode for remove_cached_device_blocks()
if the volume is read-only.
Some style changes.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1600 a95241bf-73f2-0310-859d-f6bbb57e9c96

Initial revision


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@639 a95241bf-73f2-0310-859d-f6bbb57e9c96