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btrfs-tree: add root refs and extent flags fields

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Lazily filling in accessor methods for btrfs objects as needed by bees.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell 2024-11-20 10:15:53 -05:00
parent a64603568b
commit f25b4c81ba
2 changed files with 16 additions and 0 deletions
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2
include/crucible/btrfs-tree.h
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@ -64,11 +64,13 @@ namespace crucible {
/// @{ Extent items (EXTENT_ITEM) /// @{ Extent items (EXTENT_ITEM)
uint64_t extent_begin() const; uint64_t extent_begin() const;
uint64_t extent_end() const; uint64_t extent_end() const;
uint64_t extent_flags() const;
uint64_t extent_generation() const; uint64_t extent_generation() const;
/// @} /// @}
/// @{ Root items /// @{ Root items
uint64_t root_flags() const; uint64_t root_flags() const;
uint64_t root_refs() const;
/// @} /// @}
/// @{ Root backref items. /// @{ Root backref items.

14
lib/btrfs-tree.cc
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@ -22,6 +22,13 @@ namespace crucible {
return m_objectid + m_offset; return m_objectid + m_offset;
} }
uint64_t
BtrfsTreeItem::extent_flags() const
{
THROW_CHECK1(invalid_argument, btrfs_search_type_ntoa(m_type), m_type == BTRFS_EXTENT_ITEM_KEY);
return btrfs_get_member(&btrfs_extent_item::flags, m_data);
}
uint64_t uint64_t
BtrfsTreeItem::extent_generation() const BtrfsTreeItem::extent_generation() const
{ {
@ -61,6 +68,13 @@ namespace crucible {
return btrfs_get_member(&btrfs_root_item::flags, m_data); return btrfs_get_member(&btrfs_root_item::flags, m_data);
} }
uint64_t
BtrfsTreeItem::root_refs() const
{
THROW_CHECK1(invalid_argument, btrfs_search_type_ntoa(m_type), m_type == BTRFS_ROOT_ITEM_KEY);
return btrfs_get_member(&btrfs_root_item::refs, m_data);
}
ostream & ostream &
operator<<(ostream &os, const BtrfsTreeItem &bti) operator<<(ostream &os, const BtrfsTreeItem &bti)
{ {