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Progressed integration of journaling metadata pairs

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- Integrated journaling into lfs_dir_t_ struct and operations,
  duplicating functions where necessary
- Added internal lfs_tag_t and lfs_stag_t
- Consolidated lfs_region and lfs_entry structures
This commit is contained in:
Christopher Haster
2018-05-21 00:56:20 -05:00
parent 8070abec34
commit 87f3e01a17
2 changed files with 719 additions and 270 deletions
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954
lfs.c
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35
lfs.h
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@@ -107,14 +107,14 @@ enum lfs_type {
LFS_STRUCT_MOVED = 0x80,
// file type
LFS_TYPE_REG_ = 0x020,
LFS_TYPE_DIR_ = 0x030,
LFS_TYPE_REG_ = 0x040,
LFS_TYPE_DIR_ = 0x050,
LFS_TYPE_NAME_ = 0x010,
LFS_TYPE_MOVE_ = 0x060,
LFS_TYPE_DROP_ = 0x070,
LFS_TYPE_MOVE_ = 0x080,
LFS_TYPE_DROP_ = 0x090,
LFS_TYPE_SUPERBLOCK_ = 0x0c0,
LFS_TYPE_SUPERBLOCK_ = 0x0c8,
LFS_TYPE_TAIL_ = 0x0d0,
LFS_TYPE_CRC_ = 0x0e0,
@@ -294,9 +294,13 @@ typedef struct lfs_entry {
} d;
} lfs_entry_t;
typedef uint32_t lfs_tag_t;
typedef int32_t lfs_stag_t;
typedef struct lfs_entry_ {
uint32_t tag;
union {
void *buffer;
lfs_block_t pair[2];
struct {
lfs_block_t head;
@@ -357,14 +361,20 @@ typedef struct lfs_dir {
} lfs_dir_t;
typedef struct lfs_dir_ {
struct lfs_dir_ *next;
lfs_block_t pair[2];
lfs_block_t tail[2];
lfs_block_t tail[2];
uint32_t rev;
lfs_off_t off;
uint32_t etag;
uint16_t count;
bool erased;
bool split;
uint16_t id;
lfs_block_t head[2];
lfs_off_t pos;
} lfs_dir_t_;
typedef struct lfs_superblock {
@@ -381,6 +391,19 @@ typedef struct lfs_superblock {
} d;
} lfs_superblock_t;
typedef struct lfs_superblock_ {
lfs_block_t root[2];
char magic[8];
uint32_t version;
lfs_size_t block_size;
lfs_size_t block_count;
lfs_size_t inline_size;
lfs_size_t attrs_size;
lfs_size_t name_size;
} lfs_superblock_t_;
typedef struct lfs_free {
lfs_block_t off;
lfs_block_t size;