Same fix a previous commit, unaligned access on strict alignment hosts
could produce wrong results (reported on send/receive and arm5). As
libbtrfs has own copy of the code fix it here too, replacing leXX_to_cpu
with get_unaligned_leXX where appropriate. This means any access to raw
buffers that get cast to a structure.
Issue: #770
Signed-off-by: David Sterba <dsterba@suse.com>
Bit shifts should be done on unsigned type as a matter of good practice
to avoid any problems with bit overflowing to the sign bit.
Signed-off-by: David Sterba <dsterba@suse.com>
This reverts commit 83ab92512e.
The commit removed some old code that seemed to be unused but this
actually broke snapper. Revert the changes completely to the v6.3 ABI
level.
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1212217
Issue: #672
Signed-off-by: David Sterba <dsterba@suse.com>
Since kernel 3.12, any btrfs mounted by a kernel would have an UUID
tree created, to record all the UUID of its subvolumes.
Without UUID tree, libbtrfs send functionality has to go through all the
subvolumes seen so far, and record those subvolumes' UUID internally so
that libbtrfs send can locate a desired subvolume.
Since commit 194b90aa2c ("btrfs-progs: libbtrfs: remove declarations
without exports in send-utils") we're deprecating this old interface
already, meaning deprecated users won't be able to build its own
subvolume list already.
And we received no error report on this so far. So let's finish the
cleanup by removing the support for fs without an UUID tree.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
These are the printk helpers from the kernel. There were a few
modifications, the hi-lights are
- We do not have fs_info::fs_state, so that needed to be removed.
- We do not have discard.h sync'ed yet, so that dependency was dropped.
- Anything related to struct super_block was commented out.
- The transaction abort had to be modified to fit with the current
btrfs-progs code.
- Added a btrfs_no_printk() helper to common/messages.* so that the
print statements still worked.
- The 32bit limit checkers are not needed so are behind __KERNEL__
Additionally there were kerncompat.h changes that needed to be made to
handle the dependencies properly. Those are easier to spot.
Any function that needed to be modified has a MODIFIED tag in the
comment section with a list of things that were changed.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
While syncing messages.[ch] I had to back out the ASSERT() code in
kerncompat.h, which means we now rely on the kernel code for ASSERT().
In order to maintain some semblance of separation introduce UASSERT()
and use that in all the purely userspace code.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We're keeping a libbtrfs compatible kerncompat.h around to make it
easier to modify the rest of btrfs-progs. Unfortunately we also use
some of kernel-lib in libbtrfs, and those also include kerncompat.h.
Those getting included first means we'll pull include/kerncompat.h
instead of libbtrfs/kerncompat.h, which will mess things up.
Fix this by making sure we include our local copy of kerncompat.h first
before we include any other header in btrfs-progs.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The crc32c.c is going to be updated with CPU feature detection from
common/ which is not suitable for libbtrfs, so make own copy of the
file.
Signed-off-by: David Sterba <dsterba@suse.com>
Add a copy from v6.0.2 of kerncompat.h for libbtrfs to avoid accidental
build breakage as it's a public header and until now also shared with
the rest of btrfs-progs code.
Signed-off-by: David Sterba <dsterba@suse.com>
The file ioctl.h has been copied to libbtrfs in 5fc1d0cd64
("btrfs-progs: copy ioctl.h into libbtrfs") but that was after changes
to the btrfs_qgroup_limit in 03451430de ("btrfs-progs: rename qgroup
items to match the kernel naming scheme"). This caused build breakage
but hasn't been fixed in v6.1.1.
Revert the contents of libbtrfs/ioctl.h to be completely just v6.0.2
though the other changes may not be needed, it's the version we know
works.
Issue: #566
Signed-off-by: David Sterba <dsterba@suse.com>
We're going to sync btrfs.h into btrfs-progs from the kernel, however
libbtrfs still needs ioctl.h. To deal with this copy ioctl.h into
libbtrfs, and update that code to use the local copy and update the
libbtrfs headers list to use this copy.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We return __u16 in the kernel, as this is actually the size of
btrfs_qgroup_level. Adjust the existing helpers and update all the
callers to deal with the new size appropriately. This will make syncing
the kernel code cleaner.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Kernel function name is btrfs_qgroup_subvolid so rename it in progs. The
libbtrfs can't API be changed without versioning so at least add the new
helper.
Signed-off-by: David Sterba <dsterba@suse.com>
The radix-tree is not used in userspace code. In kernel it's for
tracking unpersisted and in-memory structures and has been replaced by
the xarray.
Signed-off-by: David Sterba <dsterba@suse.com>
The header extent-cache.h is internal and provides only structures defined
in ctree.h, we don't need anything else besides the structures.
Signed-off-by: David Sterba <dsterba@suse.com>
The header extent_io.h is internal and provides only structures defined
in ctree.h, we don't need anything else besides the structures and
declarations used for inline functions in other headers.
Signed-off-by: David Sterba <dsterba@suse.com>
Let libbtrfs use own copy of the exported header files to avoid
potential breakage when syncing with kernel headers and also to remove
declarations that are not used by userspace. The send.h is frozen to
support protocol v1.
Signed-off-by: David Sterba <dsterba@suse.com>
Copy the lookup helper and switch the API functions using it. We can
drop dependency on kernel-shared/uuid-tree.c after that.
Signed-off-by: David Sterba <dsterba@suse.com>
There are two functions for resolving subvolume id path, but one is less
convenient and pulls a lot of dependencies. This is
btrfs_list_path_for_root, where the idea is to have the whole tree of
subvolumes and query it as needed.
For simple path resolution we already have btrfs_subvolid_resolve and
it's also in the public API, so we can use it and drop the other one.
This in turn allows to drop btrfs-list.o from build dependencies.
Signed-off-by: David Sterba <dsterba@suse.com>
The two files send-stream and send-utils contain the implementations of
the exported API, which was just for send stream. This was the original
idea. That libbtrfs contains another 40 files was a result of
unclean/missing library design and had to be done that way to resolve
the symbols due to dependencies.
That the same files have been used for both internal and public library
has prevented refactoring and cleanups and was always a risk of breaking
something.
Make separate copy for libbtrfs utils and allow any cleanups and
reduction of number of build objects. The API hasn't changed since the
beginning so there's low risk of missing some fixes from the internal
code.
Signed-off-by: David Sterba <dsterba@suse.com>
