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Begin journal init reader

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This commit is contained in:
Vitaliy Filippov
2019-11-04 01:42:53 +03:00
parent 9babacb00a
commit e1c92d2227
7 changed files with 256 additions and 16 deletions
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blockstore_journal.h
+10 -8
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@@ -12,22 +12,23 @@
#define JE_STABLE 0x04
#define JE_DELETE 0x05
// crc32c comes first to ease calculation and is equal to crc32()
struct __attribute__((__packed__)) journal_entry_start
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t reserved1;
uint64_t offset;
uint32_t crc32_replaced;
uint64_t journal_start;
};
struct __attribute__((__packed__)) journal_entry_small_write
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t crc32_prev;
object_id oid;
uint64_t version;
@@ -38,10 +39,10 @@ struct __attribute__((__packed__)) journal_entry_small_write
struct __attribute__((__packed__)) journal_entry_big_write
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t crc32_prev;
object_id oid;
uint64_t version;
@@ -50,10 +51,10 @@ struct __attribute__((__packed__)) journal_entry_big_write
struct __attribute__((__packed__)) journal_entry_stable
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t crc32_prev;
object_id oid;
uint64_t version;
@@ -61,10 +62,10 @@ struct __attribute__((__packed__)) journal_entry_stable
struct __attribute__((__packed__)) journal_entry_del
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t crc32_prev;
object_id oid;
uint64_t version;
@@ -76,10 +77,11 @@ struct __attribute__((__packed__)) journal_entry
{
struct __attribute__((__packed__))
{
uint32_t crc32;
uint16_t magic;
uint16_t type;
uint32_t size;
uint32_t crc32;
uint32_t crc32_prev;
};
journal_entry_start start;
journal_entry_small_write small_write;