The variable res should be initialized to 0 in these functions,
because if the searched key is not found, the variable is used
uninitialized.
Reported-by: Coverity (CID: 167335)
Reported-by: Coverity (CID: 167336)
Reported-by: Coverity (CID: 167337)
Signed-off-by: Marek Behun <marek.behun@nic.cz>
This adds the proper implementation for the BTRFS filesystem.
The implementation currently supports only read-only mode and
the filesystem can be only on a single device.
Checksums of data chunks is unimplemented.
Compression is implemented (ZLIB + LZO).
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/btrfs.h
create mode 100644 fs/btrfs/chunk-map.c
create mode 100644 fs/btrfs/compression.c
create mode 100644 fs/btrfs/ctree.c
create mode 100644 fs/btrfs/dev.c
create mode 100644 fs/btrfs/dir-item.c
create mode 100644 fs/btrfs/extent-io.c
create mode 100644 fs/btrfs/hash.c
create mode 100644 fs/btrfs/inode.c
create mode 100644 fs/btrfs/root.c
create mode 100644 fs/btrfs/subvolume.c
create mode 100644 fs/btrfs/super.c
BTRFS on disk structures are stored in Little Endian. Add functions
to convert this structures to cpu and to disk format.
On Little Endian hosts, these functions do nothing.
On Big Endian the CALL_MACRO_FROM_EACH from variadic-macro.h is used
to define all the members for each structure on which cpu_to_le* or
le*_to_cpu is to be called.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/conv-funcs.h
Add btrfs_tree.h and ctree.h from Linux which contains constants
and structures for the BTRFS filesystem.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/btrfs_tree.h
create mode 100644 fs/btrfs/ctree.h
