class JournalSuperblock

class JournalSuperblock

Defined at line 20 of file ../../src/storage/lib/vfs/cpp/journal/superblock.h

Contains and manages state representing the on-device journal info block.

Public Methods

void JournalSuperblock ()

Defined at line 23 of file ../../src/storage/lib/vfs/cpp/journal/superblock.cc

void JournalSuperblock (std::unique_ptr<storage::BlockBuffer> buffer)

Defined at line 25 of file ../../src/storage/lib/vfs/cpp/journal/superblock.cc

zx_status_t Validate ()

Confirms that the magic and checksums within the info block are correct.

Returns |ZX_ERR_IO| if these fields do not match the expected value.

Defined at line 30 of file ../../src/storage/lib/vfs/cpp/journal/superblock.cc

uint64_t start ()

Returns the start of the first journal entry.

Defined at line 35 of file ../../src/storage/lib/vfs/cpp/journal/superblock.h

uint64_t sequence_number ()

Defined at line 36 of file ../../src/storage/lib/vfs/cpp/journal/superblock.h

const storage::BlockBuffer & buffer ()

Defined at line 37 of file ../../src/storage/lib/vfs/cpp/journal/superblock.h

void Update (uint64_t start, uint64_t sequence_number)

Updates all client-visible fields of the info block. Additionally updates the checksum and

sequence_number in-memory.

Defined at line 46 of file ../../src/storage/lib/vfs/cpp/journal/superblock.cc