diff options
| author | Viacheslav Dubeyko <slava@dubeyko.com> | 2026-04-03 16:05:55 -0700 |
|---|---|---|
| committer | Viacheslav Dubeyko <slava@dubeyko.com> | 2026-04-08 14:23:29 -0700 |
| commit | 732af3aa6337fd56025c0548a9e54d6231052144 (patch) | |
| tree | 3fe7d66379f4b18188acf5870b022aea82a5b8af /include/linux | |
| parent | 63584d76765bb3e212f70c4c3951ea785fabef1b (diff) | |
hfsplus: rework logic of map nodes creation in xattr b-tree
In hfsplus_init_header_node() when node_count > 63488
(header bitmap capacity), the code calculates map_nodes,
subtracts them from free_nodes, and marks their positions
used in the bitmap. However, it doesn't write the actual
map node structure (type, record offsets, bitmap) for
those physical positions, only node 0 is written.
This patch reworks hfsplus_create_attributes_file()
logic by introducing a specialized method of
hfsplus_init_map_node() and writing the allocated
map b-tree's nodes by means of
hfsplus_write_attributes_file_node() method.
cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
cc: Yangtao Li <frank.li@vivo.com>
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
Link: https://lore.kernel.org/r/20260403230556.614171-5-slava@dubeyko.com
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/hfs_common.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hfs_common.h b/include/linux/hfs_common.h index 9e71b9a03b60..07dfc39630ab 100644 --- a/include/linux/hfs_common.h +++ b/include/linux/hfs_common.h @@ -518,6 +518,8 @@ struct hfs_btree_header_rec { #define HFSPLUS_BTREE_HDR_MAP_REC_INDEX 2 /* Map (bitmap) record in Header node */ #define HFSPLUS_BTREE_MAP_NODE_REC_INDEX 0 /* Map record in Map Node */ #define HFSPLUS_BTREE_HDR_USER_BYTES 128 +#define HFSPLUS_BTREE_MAP_NODE_RECS_COUNT 2 +#define HFSPLUS_BTREE_MAP_NODE_RESERVED_BYTES 2 /* btree key type */ #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ |