class JournalHeaderView

class JournalHeaderView

Defined at line 19 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

Public Methods

uint64_t TargetBlock (uint32_t index)

Returns the block number where |index| block in the payload will be written to.

Defined at line 34 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

void SetTargetBlock (uint32_t index, uint64_t target)

Sets |index| block in the payload to be written to |target| block.

Defined at line 40 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

const uint64_t * TargetBlockPtr (uint32_t index)

Returns pointer to memory where target block for |index| is stored.

TODO(https://fxbug.dev/42118623).

Defined at line 47 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

void JournalHeaderView (std::span<uint8_t> block)

Creates header view created from the block. This may or may not be a valid header. Useful when

inspecting a disk. Asserts on finding |block| to be at smaller than kJournalBlockSize bytes.

Defined at line 49 of file ../../src/storage/lib/vfs/cpp/journal/header_view.cc

bool EscapedBlock (uint32_t index)

Returns true if target block at |index| is escaped.

Defined at line 53 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

fpromise::result<JournalHeaderView, zx_status_t> Create (std::span<uint8_t> block, uint64_t sequence_number)

Returns HeaderView on finding a valid journal entry header in |block|.

Defined at line 69 of file ../../src/storage/lib/vfs/cpp/journal/header_view.cc

void JournalHeaderView (std::span<uint8_t> block, uint64_t payload_blocks, uint64_t sequence_number)

Initializes |block| with valid header and sets payload blocks and sequence number. Asserts on

finding |block| to be at smaller than kJournalBlockSize bytes.

Defined at line 54 of file ../../src/storage/lib/vfs/cpp/journal/header_view.cc

void SetEscapedBlock (uint32_t index, bool flag)

Sets escape flag for target block at |index|.

Defined at line 58 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

uint64_t PayloadBlocks ()

Defined at line 66 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

const uint64_t * PayloadBlocksPtr ()

TODO(https://fxbug.dev/42118623).

Defined at line 69 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

JournalObjectType ObjectType ()

Defined at line 70 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h

uint64_t SequenceNumber ()

Defined at line 72 of file ../../src/storage/lib/vfs/cpp/journal/header_view.h