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mkfs: Initial commit for patch v2 series

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This is same as f2fs-tools-1.1.0.tar.gz, and for patch v2 in kernel.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@gmail.com>
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Jaegeuk Kim 2012-10-26 21:56:34 +09:00 committed by Jaegeuk Kim
commit 036d45e551
14 changed files with 2564 additions and 0 deletions
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This package has been developed by Praesto Team at Samsung Electronics Co., Ltd.

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The tools for F2FS are covered by GNU Public License version 2.
Copyright (c) 2012 Samsung Electronics Co., Ltd.
http://www.samsung.com/
This program is free software; you can redistribute it and/or modify
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f2fs-tools-1.0.0 Tue Aug 14, 2012 KST
* The first release of f2fs-tools.

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Unfortunately, this technique does not work for `CONFIG_SHELL' due to
an Autoconf bug. Until the bug is fixed you can use this workaround:
CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
`configure' Invocation
======================
`configure' recognizes the following options to control how it
operates.
`--help'
`-h'
Print a summary of all of the options to `configure', and exit.
`--help=short'
`--help=recursive'
Print a summary of the options unique to this package's
`configure', and exit. The `short' variant lists options used
only in the top level, while the `recursive' variant lists options
also present in any nested packages.
`--version'
`-V'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE,
traditionally `config.cache'. FILE defaults to `/dev/null' to
disable caching.
`--config-cache'
`-C'
Alias for `--cache-file=config.cache'.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--prefix=DIR'
Use DIR as the installation prefix. *note Installation Names::
for more details, including other options available for fine-tuning
the installation locations.
`--no-create'
`-n'
Run the configure checks, but stop before creating any output
files.
`configure' also accepts some other, not widely useful, options. Run
`configure --help' for more details.

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## Makefile.am
ACLOCAL_AMFLAGS = -I m4
SUBDIRS = man mkfs

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F2FS format utilility
---------------------
To use f2fs filesystem, you should format the storage partition
with this utilility. Otherwise, you cannot mount f2fs.
Initial compilation
-------------------
Before compilation initially, autoconf/automake tools should be run.
# autoreconf --install
How to compile
--------------
# ./configure
# make
How to run by default
---------------------
$ ./mkfs.f2fs -l [LABEL] $DEV
For more mkfs options, see man page.

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.68])
AC_INIT([F2FS tools], [1.0.0], [TBD])
AM_INIT_AUTOMAKE
AC_CONFIG_SRCDIR([mkfs/f2fs_format.c])
AC_CONFIG_HEADERS([config.h])
# Checks for programs.
AC_PROG_CC
# Checks for libraries.
# Checks for header files.
AC_CHECK_HEADERS([fcntl.h mntent.h stdlib.h string.h sys/ioctl.h sys/mount.h unistd.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_TYPE_INT32_T
AC_TYPE_INT8_T
AC_TYPE_SIZE_T
# Checks for library functions.
AC_FUNC_GETMNTENT
AC_CHECK_FUNCS([getmntent memset])
AC_CONFIG_FILES([Makefile
man/Makefile
mkfs/Makefile])
AC_OUTPUT

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*.m4

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## Makefile.am
dist_man_MANS = mkfs.f2fs.8

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.\" Copyright (C) 2007-2012 Nippon Telegraph and Telephone Corporation.
.\" Written by Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
.\"
.TH MKFS.F2FS 8 "August 2012" "f2fs-tools version 1.0"
.SH NAME
mkfs.f2fs \- create an F2FS file system
.SH SYNOPSIS
.B mkfs.f2fs
[
.B \-a
.I heap-based-allocation
]
[
.B \-l
.I volume-label
]
[
.B \-o
.I overprovision-ratio-percentage
]
[
.B \-s
.I log-based-#-of-segments-per-section
]
[
.B \-z
.I #-of-sections-per-zone
]
.I device
.SH DESCRIPTION
.B mkfs.f2fs
is used to create a f2fs file system (usually in a disk partition).
\fIdevice\fP is the special file corresponding to the device (e.g.
\fI/dev/sdXX\fP).
.PP
The exit code returned by
.B mkfs.f2fs
is 0 on success and 1 on failure.
.SH OPTIONS
.TP
.BI \-a " heap-based-allocation"
Specify 1 or 0 to enable/disable heap based block allocation policy.
If the value is equal to 1, each of active log areas are initially
assigned separately according to the whole volume size.
The default value is 1.
.TP
.BI \-l " volume-label"
Specify the volume label to the partition mounted as F2FS.
.TP
.BI \-o " overprovision-ratio-percentage"
Specify the percentage over the volume size for overprovision area. This area
is hidden to users, and utilized by F2FS cleaner. The default percentage is 5%.
.TP
.BI \-s " log-based-#-of-segments-per-section"
Specify the log-based number of segments per section. A section consists of
multiple consecutive segments, and is the unit of garbage collection.
The default number is 0, which means one segment is assigned to a section.
.TP
.BI \-z " #-of-sections-per-zone"
Specify the number of sections per zone. A zone consists of multiple sections.
F2FS allocates segments for active logs with separated zones as much as possible.
The default number is 1, which means a zone consists of one section.
.SH AUTHOR
This version of
.B mkfs.f2fs
has been written by Jaegeuk Kim <jaegeuk.kim@samsung.com>.
.SH AVAILABILITY
.B mkfs.f2fs
is available from http://sourceforge.net/projects/f2fs-tools/.
.SH SEE ALSO
.BR mkfs (8).

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## Makefile.am
AM_CFLAGS = -Wall
bin_PROGRAMS = mkfs.f2fs
mkfs_f2fs_SOURCES = f2fs_format.c f2fs_format.h

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/**
* f2fs_format.h
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __F2FS_FORMAT_H__
#define __F2FS_FORMAT_H__
#include <linux/types.h>
#include <endian.h>
#include <byteswap.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define le16_to_cpu(x) ((__u16)(x))
#define le32_to_cpu(x) ((__u32)(x))
#define le64_to_cpu(x) ((__u64)(x))
#define cpu_to_le16(x) ((__u16)(x))
#define cpu_to_le32(x) ((__u32)(x))
#define cpu_to_le64(x) ((__u64)(x))
#elif __BYTE_ORDER == __BIG_ENDIAN
#define le16_to_cpu(x) bswap_16(x)
#define le32_to_cpu(x) bswap_32(x)
#define le64_to_cpu(x) bswap_64(x)
#define cpu_to_le16(x) bswap_16(x)
#define cpu_to_le32(x) bswap_32(x)
#define cpu_to_le64(x) bswap_64(x)
#endif
/* these are defined in kernel */
#define PAGE_SIZE 4096
#define PAGE_CACHE_SIZE 4096
#define BITS_PER_BYTE 8
/* for mkfs */
#define F2FS_MIN_VOLUME_SIZE 104857600
#define F2FS_MAJOR_VERSION 1
#define F2FS_MINOR_VERSION 0
#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 DEFAULT_SEGMENTS_PER_SECTION 1
#define F2FS_CP_BLOCK_SIZE (DEFAULT_SECTOR_SIZE * \
DEFAULT_SECTORS_PER_BLOCK)
#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;
} __attribute__((packed));
#ifdef CONFIG_64BIT
#define BITS_PER_LONG 64
#else
#define BITS_PER_LONG 32
#endif
#define BIT_MASK(nr) (1 << (nr % BITS_PER_LONG))
#define BIT_WORD(nr) (nr / BITS_PER_LONG)
/*
* For superblock
*/
#define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS Magic Number */
#define F2FS_SUPER_OFFSET 0 /* start sector # for sb */
#define F2FS_BLKSIZE 4096
#define F2FS_MAX_EXTENSION 64
struct f2fs_super_block {
__le32 magic; /* Magic Number */
__le16 major_ver; /* Major Version */
__le16 minor_ver; /* Minor Version */
__le32 log_sectorsize; /* log2 (Sector size in bytes) */
__le32 log_sectors_per_block; /* log2 (Number of sectors per block */
__le32 log_blocksize; /* log2 (Block size in bytes) */
__le32 log_blocks_per_seg; /* log2 (Number of blocks per segment) */
__le32 segs_per_sec; /* log2 (Number of segments per section) */
__le32 secs_per_zone; /* Number of sections per zone) */
__le32 checksum_offset; /* Checksum position in this super block */
__le64 block_count; /* Total number of blocks */
__le32 section_count; /* Total number of sections */
__le32 segment_count; /* Total number of segments */
__le32 segment_count_ckpt; /* Total number of segments
in Checkpoint area */
__le32 segment_count_sit; /* Total number of segments
in Segment information table */
__le32 segment_count_nat; /* Total number of segments
in Node address table */
/*Total number of segments in Segment summary area */
__le32 segment_count_ssa;
/* Total number of segments in Main area */
__le32 segment_count_main;
__le32 failure_safe_block_distance;
__le32 segment0_blkaddr; /* Start block address of Segment 0 */
__le32 start_segment_checkpoint; /* Start block address of ckpt */
__le32 sit_blkaddr; /* Start block address of SIT */
__le32 nat_blkaddr; /* Start block address of NAT */
__le32 ssa_blkaddr; /* Start block address of SSA */
__le32 main_blkaddr; /* Start block address of Main area */
__le32 root_ino; /* Root directory inode number */
__le32 node_ino; /* node inode number */
__le32 meta_ino; /* meta inode number */
__le32 volume_serial_number; /* VSN is optional field */
__le16 volume_name[512]; /* Volume Name */
__le32 extension_count;
__u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */
} __attribute__((packed));
/*
* For checkpoint
*/
struct f2fs_checkpoint {
__le64 checkpoint_ver; /* Checkpoint block version number */
__le64 user_block_count; /* # of user blocks */
__le64 valid_block_count; /* # of valid blocks in Main area */
__le32 rsvd_segment_count; /* # of reserved segments for gc */
__le32 overprov_segment_count; /* # of overprovision segments */
__le32 free_segment_count; /* # of free segments in Main area */
/* information of current node segments */
__le32 cur_node_segno[MAX_ACTIVE_NODE_LOGS];
__le16 cur_node_blkoff[MAX_ACTIVE_NODE_LOGS];
__le16 nat_upd_blkoff[MAX_ACTIVE_NODE_LOGS];
/* information of current data segments */
__le32 cur_data_segno[MAX_ACTIVE_DATA_LOGS];
__le16 cur_data_blkoff[MAX_ACTIVE_DATA_LOGS];
__le32 ckpt_flags; /* Flags : umount and journal_present */
__le32 cp_pack_total_block_count;
__le32 cp_pack_start_sum; /* start block number of data summary */
__le32 valid_node_count; /* Total number of valid nodes */
__le32 valid_inode_count; /* Total number of valid inodes */
__le32 next_free_nid; /* Next free node number */
__le32 sit_ver_bitmap_bytesize; /* Default value 64 */
__le32 nat_ver_bitmap_bytesize; /* Default value 256 */
__le32 checksum_offset; /* Checksum position
in this checkpoint block */
__le64 elapsed_time; /* elapsed time while partition
is mounted */
/* allocation type of current segment */
unsigned char alloc_type[MAX_ACTIVE_LOGS];
/* SIt and NAT version bitmap */
unsigned char sit_nat_version_bitmap[1];
} __attribute__((packed));
/*
* For NODE structure
*/
struct f2fs_extent {
__le32 fofs;
__le32 blk_addr;
__le32 len;
} __attribute__((packed));
#define F2FS_MAX_NAME_LEN 256
#define ADDRS_PER_INODE 927 /* Address Pointers in an Inode */
#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
struct f2fs_inode {
__le16 i_mode; /* File mode */
__u8 i_advise; /* File hints */
__u8 i_reserved; /* Reserved */
__le32 i_uid; /* User ID */
__le32 i_gid; /* Group ID */
__le32 i_links; /* Links count */
__le64 i_size; /* File size in bytes */
__le64 i_blocks; /* File size in bytes */
__le64 i_ctime; /* inode Change time */
__le64 i_mtime; /* Modification time */
__le32 i_ctime_nsec;
__le32 i_mtime_nsec;
__le32 current_depth;
__le32 i_xattr_nid;
__le32 i_flags; /* file attributes */
__le32 i_pino; /* parent inode number */
__le32 i_namelen; /* file name length */
__u8 i_name[F2FS_MAX_NAME_LEN]; /* file name for SPOR */
struct f2fs_extent i_ext; /* caching a largest extent */
__le32 i_addr[ADDRS_PER_INODE]; /* Pointers to data blocks */
__le32 i_nid[5]; /* direct(2), indirect(2),
double_indirect(1) node id */
} __attribute__((packed));
struct direct_node {
__le32 addr[ADDRS_PER_BLOCK]; /* aray of data block address */
} __attribute__((packed));
struct indirect_node {
__le32 nid[NIDS_PER_BLOCK]; /* aray of data block address */
} __attribute__((packed));
struct node_footer {
__le32 nid; /* node id */
__le32 ino; /* iNode no */
__le32 flag; /* include cold/fsync/dentry marks and offset */
__le64 cp_ver; /* checkpoint version */
__le32 next_blkaddr; /* next node page block address */
} __attribute__((packed));
struct f2fs_node {
union {
struct f2fs_inode i;
struct direct_node dn;
struct indirect_node in;
};
struct node_footer footer;
} __attribute__((packed));
/*
* For NAT entries
*/
#define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry))
struct f2fs_nat_entry {
__u8 version;
__le32 ino;
__le32 block_addr;
} __attribute__((packed));
struct f2fs_nat_block {
struct f2fs_nat_entry entries[NAT_ENTRY_PER_BLOCK];
} __attribute__((packed));
/*
* For SIT entries
*/
#define CURSEG_NULL ((-1 << 10) >> 10) /* use 6bit - 0x3f */
enum {
CURSEG_HOT_DATA, /* directory entry pages */
CURSEG_WARM_DATA, /* updated or appended user data pages */
CURSEG_COLD_DATA, /* multimedia or GCed data pages */
CURSEG_HOT_NODE, /* node pages to save index of directory entry pages */
CURSEG_WARM_NODE, /* node pages to save index of user data pages */
CURSEG_COLD_NODE, /* node page to save indirect node index */
};
#define SIT_VBLOCK_MAP_SIZE 64
#define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry))
struct f2fs_sit_entry {
__le16 vblocks;
__u8 valid_map[SIT_VBLOCK_MAP_SIZE];
__le64 mtime;
} __attribute__((packed));
struct f2fs_sit_block {
struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK];
} __attribute__((packed));
struct f2fs_summary {
__le32 nid; /* parent node id */
union {
__u8 reserved[3];
struct {
__u8 version; /* node version number */
__le16 bidx; /* block index in parent node */
} __attribute__((packed));
};
} __attribute__((packed));
struct summary_footer {
unsigned char entry_type;
__u32 check_sum;
} __attribute__((packed));
#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)
#define SUMMARY_SIZE (sizeof(struct f2fs_summary))
#define SUM_FOOTER_SIZE (sizeof(struct summary_footer))
#define ENTRIES_IN_SUM 512
#define SUM_ENTRY_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM)
#define SUM_JOURNAL_SIZE (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE -\
SUM_ENTRY_SIZE)
struct nat_journal_entry {
__le32 nid;
struct f2fs_nat_entry ne;
} __attribute__((packed));
struct sit_journal_entry {
__le32 segno;
struct f2fs_sit_entry se;
} __attribute__((packed));
#define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\
sizeof(struct nat_journal_entry))
#define NAT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\
sizeof(struct nat_journal_entry))
#define SIT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\
sizeof(struct sit_journal_entry))
#define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\
sizeof(struct sit_journal_entry))
enum {
NAT_JOURNAL = 0,
SIT_JOURNAL
};
struct nat_journal {
struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES];
__u8 reserved[NAT_JOURNAL_RESERVED];
} __attribute__((packed));
struct sit_journal {
struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES];
__u8 reserved[SIT_JOURNAL_RESERVED];
} __attribute__((packed));
struct f2fs_summary_block {
struct f2fs_summary entries[ENTRIES_IN_SUM];
union {
__le16 n_nats;
__le16 n_sits;
};
union {
struct nat_journal nat_j;
struct sit_journal sit_j;
};
struct summary_footer footer;
} __attribute__((packed));
/*
* For directory operations
*/
#define F2FS_NAME_LEN 8 /* 256 Unicode */
#define NR_DENTRY_IN_BLOCK 214 /* the number of dentry in a block */
#define MAX_DIR_HASH_DEPTH 63 /* MAX level for dir lookup */
#define SIZE_OF_DIR_ENTRY 11 /* by byte */
#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \
BITS_PER_BYTE)
#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
F2FS_NAME_LEN) * \
NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
struct f2fs_dir_entry {
__le32 hash_code; /* hash code of file name */
__le32 ino; /* node number of inode */
__le16 name_len; /* the size of file name
* length in unicode characters */
__u8 file_type;
} __attribute__((packed));
struct f2fs_dentry_block {
__u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP];
__u8 reserved[SIZE_OF_RESERVED];
struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK];
__u8 filename[NR_DENTRY_IN_BLOCK][F2FS_NAME_LEN];
} __attribute__((packed));
enum {
F2FS_FT_UNKNOWN,
F2FS_FT_REG_FILE,
F2FS_FT_DIR,
F2FS_FT_CHRDEV,
F2FS_FT_BLKDEV,
F2FS_FT_FIFO,
F2FS_FT_SOCK,
F2FS_FT_SYMLINK,
F2FS_FT_MAX
};
#endif //__F2FS_FORMAT_H__