block_cache: Change signature of *_etc() functions

* This allows file systems to retrieve the actual error code on a
failure, and report it to the user.
* All affected file systems have been adjusted to the API change.
This is a binary incompatible change.

Change-Id: Id73392aaf9c6cb7d643ff9adcb8bf80f3037874c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2913
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

bfs: Fixed leaking cookie regression.

* Introduced with the last commit.

bfs: Attribute creation now honors O_EXCL.

* This fixes ticket #8532.

bfs: Always check if NodeGetter succeeded.

* There were quite a few cases that just assumed that the disk access
would succeed.
* This also fixes bug #12962.

* small_data attribute now get their st_mtim from st_ctim, as that should be
closer to the reality.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33833 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved the status_change time check to actually filter out invalid times,
before, st_ctim was never updated; since you cannot change st_ctim via an API,
'0' cannot ever be set, either.
* Inode::WriteAttribute(), and Attribute::Write() now return whether they
created an attribute or not, and thus B_ATTR_CREATED is now correctly set.
* Moved status_change update from bfs_write_attr() into Inode::WriteAttribute()
where it can be handled more efficiently.
* Likewise, Inode::RemoveAttribute() now updates the status_change time as well,
I simply forgot this before.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33832 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Coding style cleanups, no functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26728 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

* Changed the inode write locking to be held as long as the transaction is
running - this fixes several cases where someone could see outdated data
when a transaction had to be reverted (the time between unlocking the inode
and actually reverting the blocks). For that, Inodes can now be put into a
singly linked list.
* Added a TODO in Inode::WriteAt() which explains why it cannot use the above
method: seems that our VFS/VM locking model isn't really that good.
* Fixed a possible deadlock in Attribute::_Truncate() where the inode write
lock was held before starting the transaction.
* Added an InodeReadLocker convenience class, that should be used instead
of ReadLocker - Inode::Lock() only still exists because of the needs of
bfs_io().
* Moved the bfs_io() callback hooks out of the exported module API region,
and removed their bfs_ prefix.
* Added a Volume::IsInitializing() method that should be used rather than
checking if Volume::ID() is >= 0.
* Removed the MultiInodeLocker again, as it's pretty much superfluous now.
* Moved openModeToAccess() to the Utility.h header.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26715 a95241bf-73f2-0310-859d-f6bbb57e9c96

* bfs_fsync() no longer grabs the Inode's read lock - instead, Inode::Sync()
will take care of the locking.
* Use new(std::nothrow) over new, and malloc (only in kernel_interface.cpp);
the kernel_cpp.h header isn't really necessary anymore, so there is no reason
BFS should continue to use it.
* Removed superfluous NULL checks.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26574 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced BFS's ReadWriteLock implementation with the kernel's rw_lock.
* The BlockAllocator now uses the new mutex_transfer_lock() function instead
of clobbering the mutex directly.
* Removed Lock.h - it's no longer needed.
* Minor white space cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26317 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

Disabled the attribute name checks for "name", "size", and
"last_modified" for the time being. BeOS allows creating and reading
attributes with those names.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22180 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

* 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

Enabled full attribute support under the Haiku kernel.
It's not as clean as it could, but it works for now.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10377 a95241bf-73f2-0310-859d-f6bbb57e9c96

* small_data attribute now get their st_mtim from st_ctim, as that should be
closer to the reality.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33833 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Improved the status_change time check to actually filter out invalid times,
before, st_ctim was never updated; since you cannot change st_ctim via an API,
'0' cannot ever be set, either.
* Inode::WriteAttribute(), and Attribute::Write() now return whether they
created an attribute or not, and thus B_ATTR_CREATED is now correctly set.
* Moved status_change update from bfs_write_attr() into Inode::WriteAttribute()
where it can be handled more efficiently.
* Likewise, Inode::RemoveAttribute() now updates the status_change time as well,
I simply forgot this before.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33832 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Coding style cleanups, no functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26728 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

* Changed the inode write locking to be held as long as the transaction is
running - this fixes several cases where someone could see outdated data
when a transaction had to be reverted (the time between unlocking the inode
and actually reverting the blocks). For that, Inodes can now be put into a
singly linked list.
* Added a TODO in Inode::WriteAt() which explains why it cannot use the above
method: seems that our VFS/VM locking model isn't really that good.
* Fixed a possible deadlock in Attribute::_Truncate() where the inode write
lock was held before starting the transaction.
* Added an InodeReadLocker convenience class, that should be used instead
of ReadLocker - Inode::Lock() only still exists because of the needs of
bfs_io().
* Moved the bfs_io() callback hooks out of the exported module API region,
and removed their bfs_ prefix.
* Added a Volume::IsInitializing() method that should be used rather than
checking if Volume::ID() is >= 0.
* Removed the MultiInodeLocker again, as it's pretty much superfluous now.
* Moved openModeToAccess() to the Utility.h header.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26715 a95241bf-73f2-0310-859d-f6bbb57e9c96

* bfs_fsync() no longer grabs the Inode's read lock - instead, Inode::Sync()
will take care of the locking.
* Use new(std::nothrow) over new, and malloc (only in kernel_interface.cpp);
the kernel_cpp.h header isn't really necessary anymore, so there is no reason
BFS should continue to use it.
* Removed superfluous NULL checks.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26574 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced BFS's ReadWriteLock implementation with the kernel's rw_lock.
* The BlockAllocator now uses the new mutex_transfer_lock() function instead
of clobbering the mutex directly.
* Removed Lock.h - it's no longer needed.
* Minor white space cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26317 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

Disabled the attribute name checks for "name", "size", and
"last_modified" for the time being. BeOS allows creating and reading
attributes with those names.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22180 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

* 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

Enabled full attribute support under the Haiku kernel.
It's not as clean as it could, but it works for now.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10377 a95241bf-73f2-0310-859d-f6bbb57e9c96