#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/magic.h>
#include <linux/bug.h>

Data Structures
struct	nilfs_inode

struct	nilfs_super_root

struct	nilfs_super_block

struct	nilfs_dir_entry

struct	nilfs_finfo

struct	nilfs_binfo_v

struct	nilfs_binfo_dat

union	nilfs_binfo

struct	nilfs_segment_summary

struct	nilfs_btree_node

struct	nilfs_palloc_group_desc

struct	nilfs_dat_entry

struct	nilfs_snapshot_list

struct	nilfs_checkpoint

struct	nilfs_cpinfo

struct	nilfs_cpfile_header

struct	nilfs_segment_usage

struct	nilfs_sufile_header

struct	nilfs_suinfo

struct	nilfs_cpmode

struct	nilfs_argv

struct	nilfs_period

struct	nilfs_cpstat

struct	nilfs_sustat

struct	nilfs_vinfo

struct	nilfs_vdesc

struct	nilfs_bdesc

Macros
#define	NILFS_INODE_BMAP_SIZE 7

#define	i_device_code i_bmap[0]

#define	NILFS_SR_MDT_OFFSET(inode_size, i)

#define	NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0)

#define	NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1)

#define	NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2)

#define	NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3)

#define	NILFS_DFL_MAX_MNT_COUNT 50 /* 50 mounts */

#define	NILFS_VALID_FS 0x0001 /* Unmounted cleanly */

#define	NILFS_ERROR_FS 0x0002 /* Errors detected */

#define	NILFS_RESIZE_FS 0x0004 /* Resize required */

#define	NILFS_MOUNT_ERROR_MODE 0x0070 /* Error mode mask */

#define	NILFS_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */

#define	NILFS_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */

#define	NILFS_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */

#define	NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */

#define	NILFS_MOUNT_STRICT_ORDER

#define	NILFS_MOUNT_NORECOVERY

#define	NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */

#define	NILFS_OS_LINUX 0

#define	NILFS_CURRENT_REV 2 /* current major revision */

#define	NILFS_MINOR_REV 0 /* minor revision */

#define	NILFS_MIN_SUPP_REV 2 /* minimum supported revision */

#define	NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL

#define	NILFS_FEATURE_COMPAT_SUPP 0ULL

#define	NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT

#define	NILFS_FEATURE_INCOMPAT_SUPP 0ULL

#define	NILFS_SB_BYTES ((long)&((struct nilfs_super_block *)0)->s_reserved)

#define	NILFS_ROOT_INO 2 /* Root file inode */

#define	NILFS_DAT_INO 3 /* DAT file */

#define	NILFS_CPFILE_INO 4 /* checkpoint file */

#define	NILFS_SUFILE_INO 5 /* segment usage file */

#define	NILFS_IFILE_INO 6 /* ifile */

#define	NILFS_ATIME_INO 7 /* Atime file (reserved) */

#define	NILFS_XATTR_INO 8 /* Xattribute file (reserved) */

#define	NILFS_SKETCH_INO 10 /* Sketch file */

#define	NILFS_USER_INO 11 /* Fisrt user's file inode number */

#define	NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */

#define	NILFS_SEG_MIN_BLOCKS

#define	NILFS_PSEG_MIN_BLOCKS

#define	NILFS_MIN_NRSVSEGS

#define	NILFS_ROOT_METADATA_FILE(ino) ((ino) >= NILFS_DAT_INO && (ino) <= NILFS_SUFILE_INO)

#define	NILFS_SB2_OFFSET_BYTES(devsize) ((((devsize) >> 12) - 1) << 12)

#define	NILFS_LINK_MAX 32000

#define	NILFS_NAME_LEN 255

#define	NILFS_MIN_BLOCK_SIZE 1024

#define	NILFS_MAX_BLOCK_SIZE 65536

#define	NILFS_DIR_PAD 8

#define	NILFS_DIR_ROUND (NILFS_DIR_PAD - 1)

#define	NILFS_DIR_REC_LEN(name_len)

#define	NILFS_MAX_REC_LEN ((1<<16)-1)

#define	NILFS_SEGSUM_MAGIC 0x1eaffa11 /* segment summary magic number */

#define	NILFS_SS_LOGBGN 0x0001 /* begins a logical segment */

#define	NILFS_SS_LOGEND 0x0002 /* ends a logical segment */

#define	NILFS_SS_SR 0x0004 /* has super root */

#define	NILFS_SS_SYNDT 0x0008 /* includes data only updates */

#define	NILFS_SS_GC 0x0010 /* segment written for cleaner operation */

#define	NILFS_BTREE_NODE_ROOT 0x01

#define	NILFS_BTREE_LEVEL_DATA 0

#define	NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1)

#define	NILFS_BTREE_LEVEL_MAX 14

#define	NILFS_CHECKPOINT_FNS(flag, name)

#define	NILFS_CPINFO_FNS(flag, name)

#define	NILFS_CPFILE_FIRST_CHECKPOINT_OFFSET

#define	NILFS_SEGMENT_USAGE_FNS(flag, name)

#define	NILFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET

#define	NILFS_SUINFO_FNS(flag, name)

#define	NILFS_IOCTL_IDENT 'n'

#define	NILFS_IOCTL_CHANGE_CPMODE _IOW(NILFS_IOCTL_IDENT, 0x80, struct nilfs_cpmode)

#define	NILFS_IOCTL_DELETE_CHECKPOINT _IOW(NILFS_IOCTL_IDENT, 0x81, __u64)

#define	NILFS_IOCTL_GET_CPINFO _IOR(NILFS_IOCTL_IDENT, 0x82, struct nilfs_argv)

#define	NILFS_IOCTL_GET_CPSTAT _IOR(NILFS_IOCTL_IDENT, 0x83, struct nilfs_cpstat)

#define	NILFS_IOCTL_GET_SUINFO _IOR(NILFS_IOCTL_IDENT, 0x84, struct nilfs_argv)

#define	NILFS_IOCTL_GET_SUSTAT _IOR(NILFS_IOCTL_IDENT, 0x85, struct nilfs_sustat)

#define	NILFS_IOCTL_GET_VINFO _IOWR(NILFS_IOCTL_IDENT, 0x86, struct nilfs_argv)

#define	NILFS_IOCTL_GET_BDESCS _IOWR(NILFS_IOCTL_IDENT, 0x87, struct nilfs_argv)

#define	NILFS_IOCTL_CLEAN_SEGMENTS _IOW(NILFS_IOCTL_IDENT, 0x88, struct nilfs_argv[5])

#define	NILFS_IOCTL_SYNC _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64)

#define	NILFS_IOCTL_RESIZE _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64)

#define	NILFS_IOCTL_SET_ALLOC_RANGE _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2])

Enumerations
enum	{ NILFS_FT_UNKNOWN, NILFS_FT_REG_FILE, NILFS_FT_DIR, NILFS_FT_CHRDEV, NILFS_FT_BLKDEV, NILFS_FT_FIFO, NILFS_FT_SOCK, NILFS_FT_SYMLINK, NILFS_FT_MAX }

enum	{ NILFS_CHECKPOINT_SNAPSHOT, NILFS_CHECKPOINT_INVALID, NILFS_CHECKPOINT_SKETCH, NILFS_CHECKPOINT_MINOR }

enum	{ NILFS_SEGMENT_USAGE_ACTIVE, NILFS_SEGMENT_USAGE_DIRTY, NILFS_SEGMENT_USAGE_ERROR }

enum	{ NILFS_CHECKPOINT, NILFS_SNAPSHOT }

Macro Definition Documentation

#define i_device_code i_bmap[0]

Definition at line 79 of file nilfs2_fs.h.

#define NILFS_ATIME_INO 7 /* Atime file (reserved) */

Definition at line 239 of file nilfs2_fs.h.

#define NILFS_BTREE_LEVEL_DATA 0

Definition at line 454 of file nilfs2_fs.h.

#define NILFS_BTREE_LEVEL_MAX 14

Definition at line 456 of file nilfs2_fs.h.

#define NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1)

Definition at line 455 of file nilfs2_fs.h.

#define NILFS_BTREE_NODE_ROOT 0x01

Definition at line 451 of file nilfs2_fs.h.

#define NILFS_CHECKPOINT_FNS	(	flag,
		name
	)

Value:

static inline void                          \
nilfs_checkpoint_set_##name(struct nilfs_checkpoint *cp)        \
{                                   \
    cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) |      \
                   (1UL << NILFS_CHECKPOINT_##flag));   \
}                                   \
static inline void                          \
nilfs_checkpoint_clear_##name(struct nilfs_checkpoint *cp)      \
{                                   \
    cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) &      \
                   ~(1UL << NILFS_CHECKPOINT_##flag));  \
}                                   \
static inline int                           \
nilfs_checkpoint_##name(const struct nilfs_checkpoint *cp)      \
{                                   \
    return !!(le32_to_cpu(cp->cp_flags) &               \
          (1UL << NILFS_CHECKPOINT_##flag));            \
}

Definition at line 526 of file nilfs2_fs.h.

#define NILFS_CPFILE_FIRST_CHECKPOINT_OFFSET

Value:

((sizeof(struct nilfs_cpfile_header) +              \
      sizeof(struct nilfs_checkpoint) - 1) /            \
            sizeof(struct nilfs_checkpoint))

Definition at line 596 of file nilfs2_fs.h.

#define NILFS_CPFILE_INO 4 /* checkpoint file */

Definition at line 236 of file nilfs2_fs.h.

#define NILFS_CPINFO_FNS	(	flag,
		name
	)

Value:

static inline int                           \
nilfs_cpinfo_##name(const struct nilfs_cpinfo *cpinfo)          \
{                                   \
    return !!(cpinfo->ci_flags & (1UL << NILFS_CHECKPOINT_##flag)); \
}

Definition at line 572 of file nilfs2_fs.h.

#define NILFS_CURRENT_REV 2 /* current major revision */

Definition at line 209 of file nilfs2_fs.h.

#define NILFS_DAT_INO 3 /* DAT file */

Definition at line 235 of file nilfs2_fs.h.

#define NILFS_DFL_MAX_MNT_COUNT 50 /* 50 mounts */

Definition at line 116 of file nilfs2_fs.h.

#define NILFS_DIR_PAD 8

Definition at line 317 of file nilfs2_fs.h.

#define NILFS_DIR_REC_LEN ( name_len )

Value:

(((name_len) + 12 + NILFS_DIR_ROUND) & \

~NILFS_DIR_ROUND)

Definition at line 319 of file nilfs2_fs.h.

#define NILFS_DIR_ROUND (NILFS_DIR_PAD - 1)

Definition at line 318 of file nilfs2_fs.h.

#define NILFS_ERROR_FS 0x0002 /* Errors detected */

Definition at line 122 of file nilfs2_fs.h.

#define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL

Definition at line 219 of file nilfs2_fs.h.

#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT

Definition at line 222 of file nilfs2_fs.h.

#define NILFS_FEATURE_COMPAT_SUPP 0ULL

Definition at line 221 of file nilfs2_fs.h.

#define NILFS_FEATURE_INCOMPAT_SUPP 0ULL

Definition at line 223 of file nilfs2_fs.h.

#define NILFS_IFILE_INO 6 /* ifile */

Definition at line 238 of file nilfs2_fs.h.

#define NILFS_INODE_BMAP_SIZE 7

Definition at line 47 of file nilfs2_fs.h.

#define NILFS_IOCTL_CHANGE_CPMODE _IOW(NILFS_IOCTL_IDENT, 0x80, struct nilfs_cpmode)

Definition at line 837 of file nilfs2_fs.h.

#define NILFS_IOCTL_CLEAN_SEGMENTS _IOW(NILFS_IOCTL_IDENT, 0x88, struct nilfs_argv[5])

Definition at line 853 of file nilfs2_fs.h.

#define NILFS_IOCTL_DELETE_CHECKPOINT _IOW(NILFS_IOCTL_IDENT, 0x81, __u64)

Definition at line 839 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_BDESCS _IOWR(NILFS_IOCTL_IDENT, 0x87, struct nilfs_argv)

Definition at line 851 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_CPINFO _IOR(NILFS_IOCTL_IDENT, 0x82, struct nilfs_argv)

Definition at line 841 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_CPSTAT _IOR(NILFS_IOCTL_IDENT, 0x83, struct nilfs_cpstat)

Definition at line 843 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_SUINFO _IOR(NILFS_IOCTL_IDENT, 0x84, struct nilfs_argv)

Definition at line 845 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_SUSTAT _IOR(NILFS_IOCTL_IDENT, 0x85, struct nilfs_sustat)

Definition at line 847 of file nilfs2_fs.h.

#define NILFS_IOCTL_GET_VINFO _IOWR(NILFS_IOCTL_IDENT, 0x86, struct nilfs_argv)

Definition at line 849 of file nilfs2_fs.h.

#define NILFS_IOCTL_IDENT 'n'

Definition at line 835 of file nilfs2_fs.h.

#define NILFS_IOCTL_RESIZE _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64)

Definition at line 857 of file nilfs2_fs.h.

#define NILFS_IOCTL_SET_ALLOC_RANGE _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2])

Definition at line 859 of file nilfs2_fs.h.

#define NILFS_IOCTL_SYNC _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64)

Definition at line 855 of file nilfs2_fs.h.

#define NILFS_LINK_MAX 32000

Definition at line 266 of file nilfs2_fs.h.

#define NILFS_MAX_BLOCK_SIZE 65536

Definition at line 279 of file nilfs2_fs.h.

#define NILFS_MAX_REC_LEN ((1<<16)-1)

Definition at line 321 of file nilfs2_fs.h.

#define NILFS_MIN_BLOCK_SIZE 1024

Definition at line 278 of file nilfs2_fs.h.

#define NILFS_MIN_NRSVSEGS

Value:

8 /* Minimum number of reserved

segments */

Definition at line 248 of file nilfs2_fs.h.

#define NILFS_MIN_SUPP_REV 2 /* minimum supported revision */

Definition at line 211 of file nilfs2_fs.h.

#define NILFS_MINOR_REV 0 /* minor revision */

Definition at line 210 of file nilfs2_fs.h.

#define NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */

Definition at line 132 of file nilfs2_fs.h.

#define NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */

Definition at line 135 of file nilfs2_fs.h.

#define NILFS_MOUNT_ERROR_MODE 0x0070 /* Error mode mask */

Definition at line 128 of file nilfs2_fs.h.

#define NILFS_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */

Definition at line 129 of file nilfs2_fs.h.

#define NILFS_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */

Definition at line 131 of file nilfs2_fs.h.

#define NILFS_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */

Definition at line 130 of file nilfs2_fs.h.

#define NILFS_MOUNT_NORECOVERY

Value:

0x4000 /* Disable write access during

mount-time recovery */

Definition at line 134 of file nilfs2_fs.h.

#define NILFS_MOUNT_STRICT_ORDER

Value:

0x2000 /* Apply strict in-order

semantics also for data */

Definition at line 133 of file nilfs2_fs.h.

#define NILFS_NAME_LEN 255

Definition at line 273 of file nilfs2_fs.h.

#define NILFS_OS_LINUX 0

Definition at line 203 of file nilfs2_fs.h.

#define NILFS_PSEG_MIN_BLOCKS

Value:

2 /* Minimum number of blocks in

a partial segment */

Definition at line 247 of file nilfs2_fs.h.

#define NILFS_RESIZE_FS 0x0004 /* Resize required */

Definition at line 123 of file nilfs2_fs.h.

#define NILFS_ROOT_INO 2 /* Root file inode */

Definition at line 234 of file nilfs2_fs.h.

#define NILFS_ROOT_METADATA_FILE ( ino ) ((ino) >= NILFS_DAT_INO && (ino) <= NILFS_SUFILE_INO)

Definition at line 255 of file nilfs2_fs.h.

#define NILFS_SB2_OFFSET_BYTES ( devsize ) ((((devsize) >> 12) - 1) << 12)

Definition at line 261 of file nilfs2_fs.h.

#define NILFS_SB_BYTES ((long)&((struct nilfs_super_block *)0)->s_reserved)

Definition at line 228 of file nilfs2_fs.h.

#define NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */

Definition at line 244 of file nilfs2_fs.h.

#define NILFS_SEG_MIN_BLOCKS

Value:

16 /* Minimum number of blocks in

a full segment */

Definition at line 246 of file nilfs2_fs.h.

#define NILFS_SEGMENT_USAGE_FNS	(	flag,
		name
	)

Value:

static inline void                          \
nilfs_segment_usage_set_##name(struct nilfs_segment_usage *su)      \
{                                   \
    su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) |      \
                   (1UL << NILFS_SEGMENT_USAGE_##flag));\
}                                   \
static inline void                          \
nilfs_segment_usage_clear_##name(struct nilfs_segment_usage *su)    \
{                                   \
    su->su_flags =                          \
        cpu_to_le32(le32_to_cpu(su->su_flags) &         \
                ~(1UL << NILFS_SEGMENT_USAGE_##flag));      \
}                                   \
static inline int                           \
nilfs_segment_usage_##name(const struct nilfs_segment_usage *su)    \
{                                   \
    return !!(le32_to_cpu(su->su_flags) &               \
          (1UL << NILFS_SEGMENT_USAGE_##flag));         \
}

Definition at line 622 of file nilfs2_fs.h.

#define NILFS_SEGSUM_MAGIC 0x1eaffa11 /* segment summary magic number */

Definition at line 425 of file nilfs2_fs.h.

#define NILFS_SKETCH_INO 10 /* Sketch file */

Definition at line 241 of file nilfs2_fs.h.

#define NILFS_SR_BYTES ( inode_size ) NILFS_SR_MDT_OFFSET(inode_size, 3)

Definition at line 111 of file nilfs2_fs.h.

#define NILFS_SR_CPFILE_OFFSET ( inode_size ) NILFS_SR_MDT_OFFSET(inode_size, 1)

Definition at line 109 of file nilfs2_fs.h.

#define NILFS_SR_DAT_OFFSET ( inode_size ) NILFS_SR_MDT_OFFSET(inode_size, 0)

Definition at line 108 of file nilfs2_fs.h.

#define NILFS_SR_MDT_OFFSET	(	inode_size,
		i
	)

Value:

((unsigned long)&((struct nilfs_super_root *)0)->sr_dat + \

(inode_size) * (i))

Definition at line 105 of file nilfs2_fs.h.

#define NILFS_SR_SUFILE_OFFSET ( inode_size ) NILFS_SR_MDT_OFFSET(inode_size, 2)

Definition at line 110 of file nilfs2_fs.h.

#define NILFS_SS_GC 0x0010 /* segment written for cleaner operation */

Definition at line 434 of file nilfs2_fs.h.

#define NILFS_SS_LOGBGN 0x0001 /* begins a logical segment */

Definition at line 430 of file nilfs2_fs.h.

#define NILFS_SS_LOGEND 0x0002 /* ends a logical segment */

Definition at line 431 of file nilfs2_fs.h.

#define NILFS_SS_SR 0x0004 /* has super root */

Definition at line 432 of file nilfs2_fs.h.

#define NILFS_SS_SYNDT 0x0008 /* includes data only updates */

Definition at line 433 of file nilfs2_fs.h.

#define NILFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET

Value:

((sizeof(struct nilfs_sufile_header) +              \
      sizeof(struct nilfs_segment_usage) - 1) /         \
             sizeof(struct nilfs_segment_usage))

Definition at line 674 of file nilfs2_fs.h.

#define NILFS_SUFILE_INO 5 /* segment usage file */

Definition at line 237 of file nilfs2_fs.h.

#define NILFS_SUINFO_FNS	(	flag,
		name
	)

Value:

static inline int                           \
nilfs_suinfo_##name(const struct nilfs_suinfo *si)          \
{                                   \
    return si->sui_flags & (1UL << NILFS_SEGMENT_USAGE_##flag); \
}

Definition at line 691 of file nilfs2_fs.h.

#define NILFS_USER_INO 11 /* Fisrt user's file inode number */

Definition at line 242 of file nilfs2_fs.h.

#define NILFS_VALID_FS 0x0001 /* Unmounted cleanly */

Definition at line 121 of file nilfs2_fs.h.

#define NILFS_XATTR_INO 8 /* Xattribute file (reserved) */

Definition at line 240 of file nilfs2_fs.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

NILFS_FT_UNKNOWN
NILFS_FT_REG_FILE
NILFS_FT_DIR
NILFS_FT_CHRDEV
NILFS_FT_BLKDEV
NILFS_FT_FIFO
NILFS_FT_SOCK
NILFS_FT_SYMLINK
NILFS_FT_MAX

Definition at line 300 of file nilfs2_fs.h.

anonymous enum

Enumerator:

NILFS_CHECKPOINT_SNAPSHOT
NILFS_CHECKPOINT_INVALID
NILFS_CHECKPOINT_SKETCH
NILFS_CHECKPOINT_MINOR

Definition at line 519 of file nilfs2_fs.h.

anonymous enum

Enumerator:

NILFS_SEGMENT_USAGE_ACTIVE
NILFS_SEGMENT_USAGE_DIRTY
NILFS_SEGMENT_USAGE_ERROR

Definition at line 614 of file nilfs2_fs.h.

anonymous enum

Enumerator:

NILFS_CHECKPOINT
NILFS_SNAPSHOT

Definition at line 708 of file nilfs2_fs.h.

Data Structures

Macros

Enumerations

Macro Definition Documentation

Enumeration Type Documentation