#define PAGE_SIZE 4096
#define PAGE_CACHE_SIZE 4096
#define BITS_PER_BYTE 8
+#define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS Magic Number */
/* for mkfs */
#define F2FS_MIN_VOLUME_SIZE 104857600
-
-#define F2FS_O_DIRECTORY 0x00004000
-#define F2FS_O_EONLY 0x00000040
-#define F2FS_O_WRONLY 0x00000080
-#define F2FS_O_RDONLY 0x00000100
-
#define F2FS_NUMBER_OF_CHECKPOINT_PACK 2
-
#define DEFAULT_SECTOR_SIZE 512
#define DEFAULT_SECTORS_PER_BLOCK 8
#define DEFAULT_BLOCKS_PER_SEGMENT 512
#define F2FS_CP_BLOCK_SIZE (DEFAULT_SECTOR_SIZE * \
DEFAULT_SECTORS_PER_BLOCK)
-/*
- * For further optimization on multi-head logs, on-disk layout supports maximum
- * 16 logs by default. The number, 16, is expected to cover all the cases
- * enoughly. The implementaion currently uses no more than 6 logs.
- * Half the logs are used for nodes, and the other half are used for data.
- */
-#define MAX_ACTIVE_LOGS 16
-#define MAX_ACTIVE_NODE_LOGS 8
-#define MAX_ACTIVE_DATA_LOGS 8
-
struct f2fs_global_parameters {
- u_int32_t sector_size;
- u_int32_t reserved_segments;
- u_int32_t overprovision;
- u_int32_t cur_seg[6];
- u_int32_t segs_per_sec;
- u_int32_t secs_per_zone;
- u_int32_t start_sector;
- u_int64_t total_sectors;
- u_int32_t sectors_per_blk;
- u_int32_t blks_per_seg;
- u_int8_t vol_label[16];
- int heap;
- int32_t fd;
- char *device_name;
- char *extension_list;
+ u_int32_t sector_size;
+ u_int32_t reserved_segments;
+ u_int32_t overprovision;
+ u_int32_t cur_seg[6];
+ u_int32_t segs_per_sec;
+ u_int32_t secs_per_zone;
+ u_int32_t start_sector;
+ u_int64_t total_sectors;
+ u_int32_t sectors_per_blk;
+ u_int32_t blks_per_seg;
+ u_int8_t vol_label[16];
+ int heap;
+ int32_t fd;
+ char *device_name;
+ char *extension_list;
} __attribute__((packed));
#ifdef CONFIG_64BIT
#define BITS_PER_LONG 32
#endif
-#define BIT_MASK(nr) (1 << (nr % BITS_PER_LONG))
-#define BIT_WORD(nr) (nr / BITS_PER_LONG)
+#define BIT_MASK(nr) (1 << (nr % BITS_PER_LONG))
+#define BIT_WORD(nr) (nr / BITS_PER_LONG)
/*
- * For superblock
+ * Copied from fs/f2fs/f2fs.h
*/
-#define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS Magic Number */
-#define F2FS_SUPER_OFFSET 1024 /* byte-size offset */
-#define F2FS_BLKSIZE 4096
-#define F2FS_MAX_EXTENSION 64
+#define NR_CURSEG_DATA_TYPE (3)
+#define NR_CURSEG_NODE_TYPE (3)
+#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
+
+enum {
+ CURSEG_HOT_DATA = 0, /* directory entry blocks */
+ CURSEG_WARM_DATA, /* data blocks */
+ CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
+ CURSEG_HOT_NODE, /* direct node blocks of directory files */
+ CURSEG_WARM_NODE, /* direct node blocks of normal files */
+ CURSEG_COLD_NODE, /* indirect node blocks */
+ NO_CHECK_TYPE
+};
+
+/*
+ * Copied from fs/f2fs/segment.h
+ */
+#define GET_SUM_TYPE(footer) ((footer)->entry_type)
+#define SET_SUM_TYPE(footer, type) ((footer)->entry_type = type)
+
+/*
+ * Copied from include/linux/f2fs_sb.h
+ */
+#define F2FS_SUPER_OFFSET 1024 /* byte-size offset */
+#define F2FS_LOG_SECTOR_SIZE 9 /* 9 bits for 512 byte */
+#define F2FS_LOG_SECTORS_PER_BLOCK 3 /* 4KB: F2FS_BLKSIZE */
+#define F2FS_BLKSIZE 4096 /* support only 4KB block */
+#define F2FS_MAX_EXTENSION 64 /* # of extension entries */
+
+#define NULL_ADDR 0x0U
+#define NEW_ADDR -1U
+
+#define F2FS_ROOT_INO(sbi) (sbi->root_ino_num)
+#define F2FS_NODE_INO(sbi) (sbi->node_ino_num)
+#define F2FS_META_INO(sbi) (sbi->meta_ino_num)
+
+/* This flag is used by node and meta inodes, and by recovery */
+#define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO)
+/*
+ * For further optimization on multi-head logs, on-disk layout supports maximum
+ * 16 logs by default. The number, 16, is expected to cover all the cases
+ * enoughly. The implementaion currently uses no more than 6 logs.
+ * Half the logs are used for nodes, and the other half are used for data.
+ */
+#define MAX_ACTIVE_LOGS 16
+#define MAX_ACTIVE_NODE_LOGS 8
+#define MAX_ACTIVE_DATA_LOGS 8
+
+/*
+ * For superblock
+ */
struct f2fs_super_block {
__le32 magic; /* Magic Number */
__le16 major_ver; /* Major Version */
} __attribute__((packed));
/*
+ * For orphan inode management
+ */
+#define F2FS_ORPHANS_PER_BLOCK 1020
+
+struct f2fs_orphan_block {
+ __le32 ino[F2FS_ORPHANS_PER_BLOCK]; /* inode numbers */
+ __le32 reserved; /* reserved */
+ __le16 blk_addr; /* block index in current CP */
+ __le16 blk_count; /* Number of orphan inode blocks in CP */
+ __le32 entry_count; /* Total number of orphan nodes in current CP */
+ __le32 check_sum; /* CRC32 for orphan inode block */
+} __attribute__((packed));
+
+/*
* For NODE structure
*/
struct f2fs_extent {
} __attribute__((packed));
struct direct_node {
- __le32 addr[ADDRS_PER_BLOCK]; /* aray of data block address */
+ __le32 addr[ADDRS_PER_BLOCK]; /* array of data block address */
} __attribute__((packed));
struct indirect_node {
- __le32 nid[NIDS_PER_BLOCK]; /* aray of data block address */
+ __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */
} __attribute__((packed));
+enum {
+ COLD_BIT_SHIFT = 0,
+ FSYNC_BIT_SHIFT,
+ DENT_BIT_SHIFT,
+ OFFSET_BIT_SHIFT
+};
+
struct node_footer {
__le32 nid; /* node id */
__le32 ino; /* inode nunmber */
/*
* For NAT entries
*/
-#define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry))
+#define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry))
struct f2fs_nat_entry {
__u8 version; /* latest version of cached nat entry */
* there-in blocks should occupy 64 bytes, 512 bits.
* Not allow to change this.
*/
-#define SIT_VBLOCK_MAP_SIZE 64
+#define SIT_VBLOCK_MAP_SIZE 64
#define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry))
-enum {
- CURSEG_HOT_DATA = 0, /* directory entry blocks */
- CURSEG_WARM_DATA, /* data blocks */
- CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
- CURSEG_HOT_NODE, /* direct node blocks of directory files */
- CURSEG_WARM_NODE, /* direct node blocks of normal files */
- CURSEG_COLD_NODE, /* indirect node blocks */
-};
-
/*
* Note that f2fs_sit_entry->vblocks has the following bit-field information.
* [15:10] : allocation type such as CURSEG_XXXX_TYPE
* [9:0] : valid block count
*/
-#define CURSEG_NULL ((-1 << 10) >> 10) /* use 6bit - 0x3f */
+#define SIT_VBLOCKS_SHIFT 10
+#define SIT_VBLOCKS_MASK ((1 << SIT_VBLOCKS_SHIFT) - 1)
+#define GET_SIT_VBLOCKS(raw_sit) \
+ (le16_to_cpu((raw_sit)->vblocks) & SIT_VBLOCKS_MASK)
+#define GET_SIT_TYPE(raw_sit) \
+ ((le16_to_cpu((raw_sit)->vblocks) & ~SIT_VBLOCKS_MASK) \
+ >> SIT_VBLOCKS_SHIFT)
struct f2fs_sit_entry {
__le16 vblocks; /* reference above */
struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK];
} __attribute__((packed));
-/**
+/*
* For segment summary
*
* One summary block contains exactly 512 summary entries, which represents
* exactly 2MB segment by default. Not allow to change the basic units.
*
- * NOTE : For initializing fields, you must use set_summary
+ * NOTE: For initializing fields, you must use set_summary
*
* - If data page, nid represents dnode's nid
* - If node page, nid represents the node page's nid.
* ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node)
*/
#define ENTRIES_IN_SUM 512
-#define SUMMARY_SIZE (sizeof(struct f2fs_summary))
-#define SUM_FOOTER_SIZE (sizeof(struct summary_footer))
+#define SUMMARY_SIZE (7) /* sizeof(struct summary) */
+#define SUM_FOOTER_SIZE (5) /* sizeof(struct summary_footer) */
#define SUM_ENTRY_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM)
/* a summary entry for a 4KB-sized block in a segment */
/* summary block type, node or data, is stored to the summary_footer */
#define SUM_TYPE_NODE (1)
#define SUM_TYPE_DATA (0)
-#define GET_SUM_TYPE(footer) (footer->entry_type)
-#define SET_SUM_TYPE(footer, type) (footer->entry_type = type)
struct summary_footer {
unsigned char entry_type; /* SUM_TYPE_XXX */
__u32 check_sum; /* summary checksum */
} __attribute__((packed));
-#define SUM_JOURNAL_SIZE (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE -\
+#define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\
SUM_ENTRY_SIZE)
#define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\
sizeof(struct nat_journal_entry))
/*
* For directory operations
*/
+#define F2FS_DOT_HASH 0
+#define F2FS_DDOT_HASH F2FS_DOT_HASH
+#define F2FS_MAX_HASH (~((0x3ULL) << 62))
+#define F2FS_HASH_COL_BIT ((0x1ULL) << 63)
+
+typedef __le32 f2fs_hash_t;
+
/* One directory entry slot covers 8bytes-long file name */
#define F2FS_NAME_LEN 8
+#define F2FS_NAME_LEN_BITS 3
+
+#define GET_DENTRY_SLOTS(x) ((x + F2FS_NAME_LEN - 1) >> F2FS_NAME_LEN_BITS)
/* the number of dentry in a block */
#define NR_DENTRY_IN_BLOCK 214
#define SIZE_OF_DIR_ENTRY 11 /* by byte */
#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \
- BITS_PER_BYTE)
+ BITS_PER_BYTE)
#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
F2FS_NAME_LEN) * \
NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
projects / platform / upstream / f2fs-tools.git / commitdiff