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Commit 590a95e4 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
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staging: exfat: remove staging version of exfat filesystem 

Now that there is a "real" solution for exfat in the vfs tree queued up
to be merged in 5.7-rc1 the "old" exfat code in staging can be removed.

Many thanks to Valdis for doing the work to get this into the tree in
the first place, it was greatly appreciated.
Acked-by: default avatarValdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Pali Rohár <pali@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Sungjong Seo <sj1557.seo@samsung.com>
Cc: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200310105421.GA2810679@kroah.comSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9a5e71a6
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MAINTAINERS
View file @ 590a95e4
......@@ -6301,12 +6301,6 @@ F: include/trace/events/mdio.h
F: include/uapi/linux/mdio.h
F: include/uapi/linux/mii.h
EXFAT FILE SYSTEM
M: Valdis Kletnieks <valdis.kletnieks@vt.edu>
L: linux-fsdevel@vger.kernel.org
S: Maintained
F: drivers/staging/exfat/
EXT2 FILE SYSTEM
M: Jan Kara <jack@suse.com>
L: linux-ext4@vger.kernel.org
......
drivers/staging/Kconfig
View file @ 590a95e4
......@@ -116,8 +116,6 @@ source "drivers/staging/fieldbus/Kconfig"
source "drivers/staging/kpc2000/Kconfig"
source "drivers/staging/exfat/Kconfig"
source "drivers/staging/qlge/Kconfig"
source "drivers/staging/hp/Kconfig"
......
drivers/staging/Makefile
View file @ 590a95e4
......@@ -48,7 +48,6 @@ obj-$(CONFIG_STAGING_GASKET_FRAMEWORK) += gasket/
obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/
obj-$(CONFIG_FIELDBUS_DEV) += fieldbus/
obj-$(CONFIG_KPC2000) += kpc2000/
obj-$(CONFIG_STAGING_EXFAT_FS) += exfat/
obj-$(CONFIG_QLGE) += qlge/
obj-$(CONFIG_NET_VENDOR_HP) += hp/
obj-$(CONFIG_WFX) += wfx/
drivers/staging/exfat/Kconfig deleted 100644 → 0
View file @ 9a5e71a6
# SPDX-License-Identifier: GPL-2.0
config STAGING_EXFAT_FS
tristate "exFAT fs support"
depends on BLOCK
select NLS
help
This adds support for the exFAT file system.
config STAGING_EXFAT_DISCARD
bool "enable discard support"
depends on STAGING_EXFAT_FS
default y
config STAGING_EXFAT_DELAYED_SYNC
bool "enable delayed sync"
depends on STAGING_EXFAT_FS
default n
config STAGING_EXFAT_KERNEL_DEBUG
bool "enable kernel debug features via ioctl"
depends on STAGING_EXFAT_FS
default n
config STAGING_EXFAT_DEBUG_MSG
bool "print debug messages"
depends on STAGING_EXFAT_FS
default n
config STAGING_EXFAT_DEFAULT_CODEPAGE
int "Default codepage for exFAT"
default 437
depends on STAGING_EXFAT_FS
help
This option should be set to the codepage of your exFAT filesystems.
config STAGING_EXFAT_DEFAULT_IOCHARSET
string "Default iocharset for exFAT"
default "utf8"
depends on STAGING_EXFAT_FS
help
Set this to the default input/output character set you'd like exFAT to use.
drivers/staging/exfat/Makefile deleted 100644 → 0
View file @ 9a5e71a6
# SPDX-License-Identifier: GPL-2.0-or-later
obj-$(CONFIG_STAGING_EXFAT_FS) += exfat.o
exfat-y := exfat_core.o \
exfat_super.o \
exfat_blkdev.o \
exfat_cache.o \
exfat_nls.o \
exfat_upcase.o
drivers/staging/exfat/TODO deleted 100644 → 0
View file @ 9a5e71a6
A laundry list of things that need looking at, most of which will
require more work than the average checkpatch cleanup...
Note that some of these entries may not be bugs - they're things
that need to be looked at, and *possibly* fixed.
Clean up the ffsCamelCase function names.
Fix (thing)->flags to not use magic numbers - multiple offenders
Sort out all the s32/u32/u8 nonsense - most of these should be plain int.
exfat_core.c - ffsReadFile - the goto err_out seem to leak a brelse().
same for ffsWriteFile.
All the calls to fs_sync() need to be looked at, particularly in the
context of EXFAT_DELAYED_SYNC. Currently, if that's defined, we only
flush to disk when sync() gets called. We should be doing at least
metadata flushes at appropriate times.
ffsTruncateFile - if (old_size <= new_size) {
That doesn't look right. How did it ever work? Are they relying on lazy
block allocation when actual writes happen? If nothing else, it never
does the 'fid->size = new_size' and do the inode update....
ffsSetAttr() is just dangling in the breeze, not wired up at all...
Convert global mutexes to a per-superblock mutex.
Right now, we load exactly one UTF-8 table. Check to see
if that plays nice with different codepage and iocharset values
for simultanous mounts of different devices
exfat_rmdir() checks for -EBUSY but ffsRemoveDir() doesn't return it.
In fact, there's a complete lack of -EBUSY testing anywhere.
There's probably a few missing checks for -EEXIST
check return codes of sync_dirty_buffer()
Why is remove_file doing a num_entries++??
Double check a lot of can't-happen parameter checks (for null pointers for
things that have only one call site and can't pass a null, etc).
All the DEBUG stuff can probably be tossed, including the ioctl(). Either
that, or convert to a proper fault-injection system.
exfat_remount does exactly one thing. Fix to actually deal with remount
options, particularly handling R/O correctly. For that matter, allow
R/O mounts in the first place.
Figure out why the VFAT code used multi_sector_(read|write) but the
exfat code doesn't use it. The difference matters on SSDs with wear leveling.
exfat_fat_sync(), exfat_buf_sync(), and sync_alloc_bitmap()
aren't called anyplace....
Create helper function for exfat_set_entry_time() and exfat_set_entry_type()
because it's sort of ugly to be calling the same functionn directly and
other code calling through the fs_func struc ponters...
clean up the remaining vol_type checks, which are of two types:
some are ?: operators with magic numbers, and the rest are places
where we're doing stuff with '.' and '..'.
Patches to:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Valdis Kletnieks <valdis.kletnieks@vt.edu>
drivers/staging/exfat/exfat.h deleted 100644 → 0
View file @ 9a5e71a6
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#ifndef _EXFAT_H
#define _EXFAT_H
#include <linux/types.h>
#include <linux/buffer_head.h>
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
/* For Debugging Purpose */
/* IOCTL code 'f' used by
* - file systems typically #0~0x1F
* - embedded terminal devices #128~
* - exts for debugging purpose #99
* number 100 and 101 is available now but has possible conflicts
*/
#define EXFAT_IOC_GET_DEBUGFLAGS _IOR('f', 100, long)
#define EXFAT_IOC_SET_DEBUGFLAGS _IOW('f', 101, long)
#define EXFAT_DEBUGFLAGS_INVALID_UMOUNT 0x01
#define EXFAT_DEBUGFLAGS_ERROR_RW 0x02
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
#ifdef CONFIG_STAGING_EXFAT_DEBUG_MSG
#define DEBUG 1
#else
#undef DEBUG
#endif
#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
#define DENTRY_SIZE 32 /* dir entry size */
#define DENTRY_SIZE_BITS 5
/* PBR entries */
#define PBR_SIGNATURE 0xAA55
#define EXT_SIGNATURE 0xAA550000
#define VOL_LABEL "NO NAME " /* size should be 11 */
#define OEM_NAME "MSWIN4.1" /* size should be 8 */
#define STR_FAT12 "FAT12 " /* size should be 8 */
#define STR_FAT16 "FAT16 " /* size should be 8 */
#define STR_FAT32 "FAT32 " /* size should be 8 */
#define STR_EXFAT "EXFAT " /* size should be 8 */
#define VOL_CLEAN 0x0000
#define VOL_DIRTY 0x0002
/* max number of clusters */
#define FAT12_THRESHOLD 4087 /* 2^12 - 1 + 2 (clu 0 & 1) */
#define FAT16_THRESHOLD 65527 /* 2^16 - 1 + 2 */
#define FAT32_THRESHOLD 268435457 /* 2^28 - 1 + 2 */
#define EXFAT_THRESHOLD 268435457 /* 2^28 - 1 + 2 */
/* file types */
#define TYPE_UNUSED 0x0000
#define TYPE_DELETED 0x0001
#define TYPE_INVALID 0x0002
#define TYPE_CRITICAL_PRI 0x0100
#define TYPE_BITMAP 0x0101
#define TYPE_UPCASE 0x0102
#define TYPE_VOLUME 0x0103
#define TYPE_DIR 0x0104
#define TYPE_FILE 0x011F
#define TYPE_CRITICAL_SEC 0x0200
#define TYPE_STREAM 0x0201
#define TYPE_EXTEND 0x0202
#define TYPE_ACL 0x0203
#define TYPE_BENIGN_PRI 0x0400
#define TYPE_GUID 0x0401
#define TYPE_PADDING 0x0402
#define TYPE_ACLTAB 0x0403
#define TYPE_BENIGN_SEC 0x0800
#define TYPE_ALL 0x0FFF
/* time modes */
#define TM_CREATE 0
#define TM_MODIFY 1
#define TM_ACCESS 2
/* checksum types */
#define CS_DIR_ENTRY 0
#define CS_PBR_SECTOR 1
#define CS_DEFAULT 2
#define CLUSTER_16(x) ((u16)(x))
#define CLUSTER_32(x) ((u32)(x))
#define START_SECTOR(x) \
((((sector_t)((x) - 2)) << p_fs->sectors_per_clu_bits) + \
p_fs->data_start_sector)
#define IS_LAST_SECTOR_IN_CLUSTER(sec) \
((((sec) - p_fs->data_start_sector + 1) & \
((1 << p_fs->sectors_per_clu_bits) - 1)) == 0)
#define GET_CLUSTER_FROM_SECTOR(sec) \
((u32)((((sec) - p_fs->data_start_sector) >> \
p_fs->sectors_per_clu_bits) + 2))
#define GET16(p_src) \
(((u16)(p_src)[0]) | (((u16)(p_src)[1]) << 8))
#define GET32(p_src) \
(((u32)(p_src)[0]) | (((u32)(p_src)[1]) << 8) | \
(((u32)(p_src)[2]) << 16) | (((u32)(p_src)[3]) << 24))
#define GET64(p_src) \
(((u64)(p_src)[0]) | (((u64)(p_src)[1]) << 8) | \
(((u64)(p_src)[2]) << 16) | (((u64)(p_src)[3]) << 24) | \
(((u64)(p_src)[4]) << 32) | (((u64)(p_src)[5]) << 40) | \
(((u64)(p_src)[6]) << 48) | (((u64)(p_src)[7]) << 56))
#define SET16(p_dst, src) \
do { \
(p_dst)[0] = (u8)(src); \
(p_dst)[1] = (u8)(((u16)(src)) >> 8); \
} while (0)
#define SET32(p_dst, src) \
do { \
(p_dst)[0] = (u8)(src); \
(p_dst)[1] = (u8)(((u32)(src)) >> 8); \
(p_dst)[2] = (u8)(((u32)(src)) >> 16); \
(p_dst)[3] = (u8)(((u32)(src)) >> 24); \
} while (0)
#define SET64(p_dst, src) \
do { \
(p_dst)[0] = (u8)(src); \
(p_dst)[1] = (u8)(((u64)(src)) >> 8); \
(p_dst)[2] = (u8)(((u64)(src)) >> 16); \
(p_dst)[3] = (u8)(((u64)(src)) >> 24); \
(p_dst)[4] = (u8)(((u64)(src)) >> 32); \
(p_dst)[5] = (u8)(((u64)(src)) >> 40); \
(p_dst)[6] = (u8)(((u64)(src)) >> 48); \
(p_dst)[7] = (u8)(((u64)(src)) >> 56); \
} while (0)
#ifdef __LITTLE_ENDIAN
#define GET16_A(p_src) (*((u16 *)(p_src)))
#define GET32_A(p_src) (*((u32 *)(p_src)))
#define GET64_A(p_src) (*((u64 *)(p_src)))
#define SET16_A(p_dst, src) (*((u16 *)(p_dst)) = (u16)(src))
#define SET32_A(p_dst, src) (*((u32 *)(p_dst)) = (u32)(src))
#define SET64_A(p_dst, src) (*((u64 *)(p_dst)) = (u64)(src))
#else /* BIG_ENDIAN */
#define GET16_A(p_src) GET16(p_src)
#define GET32_A(p_src) GET32(p_src)
#define GET64_A(p_src) GET64(p_src)
#define SET16_A(p_dst, src) SET16(p_dst, src)
#define SET32_A(p_dst, src) SET32(p_dst, src)
#define SET64_A(p_dst, src) SET64(p_dst, src)
#endif
/* cache size (in number of sectors) */
/* (should be an exponential value of 2) */
#define FAT_CACHE_SIZE 128
#define FAT_CACHE_HASH_SIZE 64
#define BUF_CACHE_SIZE 256
#define BUF_CACHE_HASH_SIZE 64
/* Upcase table macro */
#define HIGH_INDEX_BIT (8)
#define HIGH_INDEX_MASK (0xFF00)
#define LOW_INDEX_BIT (16 - HIGH_INDEX_BIT)
#define UTBL_ROW_COUNT BIT(LOW_INDEX_BIT)
#define UTBL_COL_COUNT BIT(HIGH_INDEX_BIT)
static inline u16 get_col_index(u16 i)
{
return i >> LOW_INDEX_BIT;
}
static inline u16 get_row_index(u16 i)
{
return i & ~HIGH_INDEX_MASK;
}
#define EXFAT_SUPER_MAGIC (0x2011BAB0L)
#define EXFAT_ROOT_INO 1
/* FAT types */
#define FAT12 0x01 /* FAT12 */
#define FAT16 0x0E /* Win95 FAT16 (LBA) */
#define FAT32 0x0C /* Win95 FAT32 (LBA) */
#define EXFAT 0x07 /* exFAT */
/* file name lengths */
#define MAX_CHARSET_SIZE 3 /* max size of multi-byte character */
#define MAX_PATH_DEPTH 15 /* max depth of path name */
#define MAX_NAME_LENGTH 256 /* max len of filename including NULL */
#define MAX_PATH_LENGTH 260 /* max len of pathname including NULL */
/* file attributes */
#define ATTR_NORMAL 0x0000
#define ATTR_READONLY 0x0001
#define ATTR_HIDDEN 0x0002
#define ATTR_SYSTEM 0x0004
#define ATTR_VOLUME 0x0008
#define ATTR_SUBDIR 0x0010
#define ATTR_ARCHIVE 0x0020
#define ATTR_EXTEND 0x000F
#define ATTR_RWMASK 0x007E
#define NUM_UPCASE 2918
#ifdef __LITTLE_ENDIAN
#define UNI_CUR_DIR_NAME ".\0"
#define UNI_PAR_DIR_NAME ".\0.\0"
#else
#define UNI_CUR_DIR_NAME "\0."
#define UNI_PAR_DIR_NAME "\0.\0."
#endif
struct date_time_t {
u16 year;
u16 month;
u16 day;
u16 hour;
u16 minute;
u16 second;
u16 millisecond;
};
struct vol_info_t {
u32 FatType;
u32 ClusterSize;
u32 NumClusters;
u32 FreeClusters;
u32 UsedClusters;
};
/* directory structure */
struct chain_t {
u32 dir;
s32 size;
u8 flags;
};
struct file_id_t {
struct chain_t dir;
s32 entry;
u32 type;
u32 attr;
u32 start_clu;
u64 size;
u8 flags;
s64 rwoffset;
s32 hint_last_off;
u32 hint_last_clu;
};
struct dir_entry_t {
char name[MAX_NAME_LENGTH * MAX_CHARSET_SIZE];
u32 attr;
u64 Size;
u32 num_subdirs;
struct date_time_t create_timestamp;
struct date_time_t modify_timestamp;
struct date_time_t access_timestamp;
};
struct timestamp_t {
u16 sec; /* 0 ~ 59 */
u16 min; /* 0 ~ 59 */
u16 hour; /* 0 ~ 23 */
u16 day; /* 1 ~ 31 */
u16 mon; /* 1 ~ 12 */
u16 year; /* 0 ~ 127 (since 1980) */
};
/* MS_DOS FAT partition boot record (512 bytes) */
struct pbr_sector_t {
u8 jmp_boot[3];
u8 oem_name[8];
u8 bpb[109];
u8 boot_code[390];
u8 signature[2];
};
/* MS-DOS FAT12/16 BIOS parameter block (51 bytes) */
struct bpb16_t {
u8 sector_size[2];
u8 sectors_per_clu;
u8 num_reserved[2];
u8 num_fats;
u8 num_root_entries[2];
u8 num_sectors[2];
u8 media_type;
u8 num_fat_sectors[2];
u8 sectors_in_track[2];
u8 num_heads[2];
u8 num_hid_sectors[4];
u8 num_huge_sectors[4];
u8 phy_drv_no;
u8 reserved;
u8 ext_signature;
u8 vol_serial[4];
u8 vol_label[11];
u8 vol_type[8];
};
/* MS-DOS FAT32 BIOS parameter block (79 bytes) */
struct bpb32_t {
u8 sector_size[2];
u8 sectors_per_clu;
u8 num_reserved[2];
u8 num_fats;
u8 num_root_entries[2];
u8 num_sectors[2];
u8 media_type;
u8 num_fat_sectors[2];
u8 sectors_in_track[2];
u8 num_heads[2];
u8 num_hid_sectors[4];
u8 num_huge_sectors[4];
u8 num_fat32_sectors[4];
u8 ext_flags[2];
u8 fs_version[2];
u8 root_cluster[4];
u8 fsinfo_sector[2];
u8 backup_sector[2];
u8 reserved[12];
u8 phy_drv_no;
u8 ext_reserved;
u8 ext_signature;
u8 vol_serial[4];
u8 vol_label[11];
u8 vol_type[8];
};
/* MS-DOS EXFAT BIOS parameter block (109 bytes) */
struct bpbex_t {
u8 reserved1[53];
u8 vol_offset[8];
u8 vol_length[8];
u8 fat_offset[4];
u8 fat_length[4];
u8 clu_offset[4];
u8 clu_count[4];
u8 root_cluster[4];
u8 vol_serial[4];
u8 fs_version[2];
u8 vol_flags[2];
u8 sector_size_bits;
u8 sectors_per_clu_bits;
u8 num_fats;
u8 phy_drv_no;
u8 perc_in_use;
u8 reserved2[7];
};
/* MS-DOS FAT file system information sector (512 bytes) */
struct fsi_sector_t {
u8 signature1[4];
u8 reserved1[480];
u8 signature2[4];
u8 free_cluster[4];
u8 next_cluster[4];
u8 reserved2[14];
u8 signature3[2];
};
/* MS-DOS FAT directory entry (32 bytes) */
struct dentry_t {
u8 dummy[32];
};
/* MS-DOS EXFAT file directory entry (32 bytes) */
struct file_dentry_t {
u8 type;
u8 num_ext;
u8 checksum[2];
u8 attr[2];
u8 reserved1[2];
u8 create_time[2];
u8 create_date[2];
u8 modify_time[2];
u8 modify_date[2];
u8 access_time[2];
u8 access_date[2];
u8 create_time_ms;
u8 modify_time_ms;
u8 access_time_ms;
u8 reserved2[9];
};
/* MS-DOS EXFAT stream extension directory entry (32 bytes) */
struct strm_dentry_t {
u8 type;
u8 flags;
u8 reserved1;
u8 name_len;
u8 name_hash[2];
u8 reserved2[2];
u8 valid_size[8];
u8 reserved3[4];
u8 start_clu[4];
u8 size[8];
};
/* MS-DOS EXFAT file name directory entry (32 bytes) */
struct name_dentry_t {
u8 type;
u8 flags;
u8 unicode_0_14[30];
};
/* MS-DOS EXFAT allocation bitmap directory entry (32 bytes) */
struct bmap_dentry_t {
u8 type;
u8 flags;
u8 reserved[18];
u8 start_clu[4];
u8 size[8];
};
/* MS-DOS EXFAT up-case table directory entry (32 bytes) */
struct case_dentry_t {
u8 type;
u8 reserved1[3];
u8 checksum[4];
u8 reserved2[12];
u8 start_clu[4];
u8 size[8];
};
/* MS-DOS EXFAT volume label directory entry (32 bytes) */
struct volm_dentry_t {
u8 type;
u8 label_len;
u8 unicode_0_10[22];
u8 reserved[8];
};
/* unused entry hint information */
struct uentry_t {
u32 dir;
s32 entry;
struct chain_t clu;
};
/* unicode name structure */
struct uni_name_t {
u16 name[MAX_NAME_LENGTH];
u16 name_hash;
u8 name_len;
};
struct buf_cache_t {
struct buf_cache_t *next;
struct buf_cache_t *prev;
struct buf_cache_t *hash_next;
struct buf_cache_t *hash_prev;
s32 drv;
sector_t sec;
bool locked;
struct buffer_head *buf_bh;
};
struct fs_info_t {
u32 drv; /* drive ID */
u32 vol_id; /* volume serial number */
u64 num_sectors; /* num of sectors in volume */
u32 num_clusters; /* num of clusters in volume */
u32 cluster_size; /* cluster size in bytes */
u32 cluster_size_bits;
u32 sectors_per_clu; /* cluster size in sectors */
u32 sectors_per_clu_bits;
u32 PBR_sector; /* PBR sector */
u32 FAT1_start_sector; /* FAT1 start sector */
u32 FAT2_start_sector; /* FAT2 start sector */
u32 root_start_sector; /* root dir start sector */
u32 data_start_sector; /* data area start sector */
u32 num_FAT_sectors; /* num of FAT sectors */
u32 root_dir; /* root dir cluster */
u32 dentries_in_root; /* num of dentries in root dir */
u32 dentries_per_clu; /* num of dentries per cluster */
u32 vol_flag; /* volume dirty flag */
struct buffer_head *pbr_bh; /* PBR sector */
u32 map_clu; /* allocation bitmap start cluster */
u32 map_sectors; /* num of allocation bitmap sectors */
struct buffer_head **vol_amap; /* allocation bitmap */
u16 **vol_utbl; /* upcase table */
u32 clu_srch_ptr; /* cluster search pointer */
u32 used_clusters; /* number of used clusters */
struct uentry_t hint_uentry; /* unused entry hint information */
u32 dev_ejected; /* block device operation error flag */
struct mutex v_mutex;
/* FAT cache */
struct buf_cache_t FAT_cache_array[FAT_CACHE_SIZE];
struct buf_cache_t FAT_cache_lru_list;
struct buf_cache_t FAT_cache_hash_list[FAT_CACHE_HASH_SIZE];
/* buf cache */
struct buf_cache_t buf_cache_array[BUF_CACHE_SIZE];
struct buf_cache_t buf_cache_lru_list;
struct buf_cache_t buf_cache_hash_list[BUF_CACHE_HASH_SIZE];
};
#define ES_2_ENTRIES 2
#define ES_3_ENTRIES 3
#define ES_ALL_ENTRIES 0
struct entry_set_cache_t {
/* sector number that contains file_entry */
sector_t sector;
/* byte offset in the sector */
s32 offset;
/*
* flag in stream entry.
* 01 for cluster chain,
* 03 for contig. clusteres.
*/
s32 alloc_flag;
u32 num_entries;
/* __buf should be the last member */
void *__buf;
};
#define EXFAT_ERRORS_CONT 1 /* ignore error and continue */
#define EXFAT_ERRORS_PANIC 2 /* panic on error */
#define EXFAT_ERRORS_RO 3 /* remount r/o on error */
/* ioctl command */
#define EXFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32)
struct exfat_mount_options {
kuid_t fs_uid;
kgid_t fs_gid;
unsigned short fs_fmask;
unsigned short fs_dmask;
/* permission for setting the [am]time */
unsigned short allow_utime;
/* codepage for shortname conversions */
unsigned short codepage;
/* charset for filename input/display */
char *iocharset;
unsigned char casesensitive;
/* on error: continue, panic, remount-ro */
unsigned char errors;
#ifdef CONFIG_STAGING_EXFAT_DISCARD
/* flag on if -o dicard specified and device support discard() */
unsigned char discard;
#endif /* CONFIG_STAGING_EXFAT_DISCARD */
};
#define EXFAT_HASH_BITS 8
#define EXFAT_HASH_SIZE BIT(EXFAT_HASH_BITS)
/*
* EXFAT file system in-core superblock data
*/
struct bd_info_t {
s32 sector_size; /* in bytes */
s32 sector_size_bits;
s32 sector_size_mask;
/* total number of sectors in this block device */
s32 num_sectors;
/* opened or not */
bool opened;
};
struct exfat_sb_info {
struct fs_info_t fs_info;
struct bd_info_t bd_info;
struct exfat_mount_options options;
int s_dirt;
struct mutex s_lock;
struct nls_table *nls_disk; /* Codepage used on disk */
struct nls_table *nls_io; /* Charset used for input and display */
struct inode *fat_inode;
spinlock_t inode_hash_lock;
struct hlist_head inode_hashtable[EXFAT_HASH_SIZE];
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
long debug_flags;
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
};
/*
* EXFAT file system inode data in memory
*/
struct exfat_inode_info {
struct file_id_t fid;
char *target;
/* NOTE: mmu_private is 64bits, so must hold ->i_mutex to access */
loff_t mmu_private; /* physically allocated size */
loff_t i_pos; /* on-disk position of directory entry or 0 */
struct hlist_node i_hash_fat; /* hash by i_location */
struct rw_semaphore truncate_lock;
struct inode vfs_inode;
struct rw_semaphore i_alloc_sem; /* protect bmap against truncate */
};
#define EXFAT_SB(sb) ((struct exfat_sb_info *)((sb)->s_fs_info))
static inline struct exfat_inode_info *EXFAT_I(struct inode *inode)
{
return container_of(inode, struct exfat_inode_info, vfs_inode);
}
/* NLS management function */
u16 nls_upper(struct super_block *sb, u16 a);
int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b);
void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
struct uni_name_t *p_uniname);
void nls_cstring_to_uniname(struct super_block *sb,
struct uni_name_t *p_uniname, u8 *p_cstring,
bool *p_lossy);
/* buffer cache management */
void exfat_buf_init(struct super_block *sb);
void exfat_buf_shutdown(struct super_block *sb);
int exfat_fat_read(struct super_block *sb, u32 loc, u32 *content);
s32 exfat_fat_write(struct super_block *sb, u32 loc, u32 content);
u8 *exfat_fat_getblk(struct super_block *sb, sector_t sec);
void exfat_fat_modify(struct super_block *sb, sector_t sec);
void exfat_fat_release_all(struct super_block *sb);
u8 *exfat_buf_getblk(struct super_block *sb, sector_t sec);
void exfat_buf_modify(struct super_block *sb, sector_t sec);
void exfat_buf_lock(struct super_block *sb, sector_t sec);
void exfat_buf_unlock(struct super_block *sb, sector_t sec);
void exfat_buf_release(struct super_block *sb, sector_t sec);
void exfat_buf_release_all(struct super_block *sb);
/* fs management functions */
void fs_set_vol_flags(struct super_block *sb, u32 new_flag);
void fs_error(struct super_block *sb);
/* cluster management functions */
s32 count_num_clusters(struct super_block *sb, struct chain_t *dir);
void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len);
/* allocation bitmap management functions */
s32 load_alloc_bitmap(struct super_block *sb);
void free_alloc_bitmap(struct super_block *sb);
/* upcase table management functions */
s32 load_upcase_table(struct super_block *sb);
void free_upcase_table(struct super_block *sb);
/* dir entry management functions */
struct timestamp_t *tm_current(struct timestamp_t *tm);
struct dentry_t *get_entry_in_dir(struct super_block *sb, struct chain_t *p_dir,
s32 entry, sector_t *sector);
struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u32 type,
struct dentry_t **file_ep);
void release_entry_set(struct entry_set_cache_t *es);
s32 count_dir_entries(struct super_block *sb, struct chain_t *p_dir);
void update_dir_checksum(struct super_block *sb, struct chain_t *p_dir,
s32 entry);
void update_dir_checksum_with_entry_set(struct super_block *sb,
struct entry_set_cache_t *es);
bool is_dir_empty(struct super_block *sb, struct chain_t *p_dir);
/* name conversion functions */
s32 get_num_entries(struct super_block *sb, struct chain_t *p_dir,
struct uni_name_t *p_uniname, s32 *entries);
u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type);
/* name resolution functions */
s32 resolve_path(struct inode *inode, char *path, struct chain_t *p_dir,
struct uni_name_t *p_uniname);
/* file operation functions */
s32 exfat_mount(struct super_block *sb, struct pbr_sector_t *p_pbr);
s32 create_dir(struct inode *inode, struct chain_t *p_dir,
struct uni_name_t *p_uniname, struct file_id_t *fid);
s32 create_file(struct inode *inode, struct chain_t *p_dir,
struct uni_name_t *p_uniname, struct file_id_t *fid);
void remove_file(struct inode *inode, struct chain_t *p_dir, s32 entry);
s32 exfat_rename_file(struct inode *inode, struct chain_t *p_dir, s32 old_entry,
struct uni_name_t *p_uniname, struct file_id_t *fid);
s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
struct chain_t *p_newdir, struct uni_name_t *p_uniname,
struct file_id_t *fid);
/* sector read/write functions */
int sector_read(struct super_block *sb, sector_t sec,
struct buffer_head **bh, bool read);
int sector_write(struct super_block *sb, sector_t sec,
struct buffer_head *bh, bool sync);
int multi_sector_read(struct super_block *sb, sector_t sec,
struct buffer_head **bh, s32 num_secs, bool read);
int multi_sector_write(struct super_block *sb, sector_t sec,
struct buffer_head *bh, s32 num_secs, bool sync);
void exfat_bdev_open(struct super_block *sb);
void exfat_bdev_close(struct super_block *sb);
int exfat_bdev_read(struct super_block *sb, sector_t secno,
struct buffer_head **bh, u32 num_secs, bool read);
int exfat_bdev_write(struct super_block *sb, sector_t secno,
struct buffer_head *bh, u32 num_secs, bool sync);
int exfat_bdev_sync(struct super_block *sb);
/* cluster operation functions */
s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc,
struct chain_t *p_chain);
void exfat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
s32 do_relse);
s32 exfat_count_used_clusters(struct super_block *sb);
/* dir operation functions */
s32 exfat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
struct uni_name_t *p_uniname, s32 num_entries,
u32 type);
void exfat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
s32 entry, s32 order, s32 num_entries);
void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u16 *uniname);
s32 exfat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
s32 entry, struct dentry_t *p_entry);
s32 exfat_calc_num_entries(struct uni_name_t *p_uniname);
/* dir entry getter/setter */
u32 exfat_get_entry_type(struct dentry_t *p_entry);
u32 exfat_get_entry_attr(struct dentry_t *p_entry);
void exfat_set_entry_attr(struct dentry_t *p_entry, u32 attr);
u8 exfat_get_entry_flag(struct dentry_t *p_entry);
void exfat_set_entry_flag(struct dentry_t *p_entry, u8 flags);
u32 exfat_get_entry_clu0(struct dentry_t *p_entry);
void exfat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu);
u64 exfat_get_entry_size(struct dentry_t *p_entry);
void exfat_set_entry_size(struct dentry_t *p_entry, u64 size);
void exfat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
u8 mode);
void exfat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
u8 mode);
extern const u8 uni_upcase[];
#endif /* _EXFAT_H */
drivers/staging/exfat/exfat_blkdev.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include "exfat.h"
void exfat_bdev_open(struct super_block *sb)
{
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
if (p_bd->opened)
return;
p_bd->sector_size = bdev_logical_block_size(sb->s_bdev);
p_bd->sector_size_bits = ilog2(p_bd->sector_size);
p_bd->sector_size_mask = p_bd->sector_size - 1;
p_bd->num_sectors = i_size_read(sb->s_bdev->bd_inode) >>
p_bd->sector_size_bits;
p_bd->opened = true;
}
void exfat_bdev_close(struct super_block *sb)
{
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
p_bd->opened = false;
}
int exfat_bdev_read(struct super_block *sb, sector_t secno,
struct buffer_head **bh, u32 num_secs,
bool read)
{
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
struct exfat_sb_info *sbi = EXFAT_SB(sb);
long flags = sbi->debug_flags;
if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
return -EIO;
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
if (!p_bd->opened)
return -ENODEV;
if (*bh)
__brelse(*bh);
if (read)
*bh = __bread(sb->s_bdev, secno,
num_secs << p_bd->sector_size_bits);
else
*bh = __getblk(sb->s_bdev, secno,
num_secs << p_bd->sector_size_bits);
if (*bh)
return 0;
WARN(!p_fs->dev_ejected,
"[EXFAT] No bh, device seems wrong or to be ejected.\n");
return -EIO;
}
int exfat_bdev_write(struct super_block *sb, sector_t secno,
struct buffer_head *bh,
u32 num_secs, bool sync)
{
s32 count;
struct buffer_head *bh2;
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
struct exfat_sb_info *sbi = EXFAT_SB(sb);
long flags = sbi->debug_flags;
if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
return -EIO;
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
if (!p_bd->opened)
return -ENODEV;
if (secno == bh->b_blocknr) {
lock_buffer(bh);
set_buffer_uptodate(bh);
mark_buffer_dirty(bh);
unlock_buffer(bh);
if (sync && (sync_dirty_buffer(bh) != 0))
return -EIO;
} else {
count = num_secs << p_bd->sector_size_bits;
bh2 = __getblk(sb->s_bdev, secno, count);
if (!bh2)
goto no_bh;
lock_buffer(bh2);
memcpy(bh2->b_data, bh->b_data, count);
set_buffer_uptodate(bh2);
mark_buffer_dirty(bh2);
unlock_buffer(bh2);
if (sync && (sync_dirty_buffer(bh2) != 0)) {
__brelse(bh2);
goto no_bh;
}
__brelse(bh2);
}
return 0;
no_bh:
WARN(!p_fs->dev_ejected,
"[EXFAT] No bh, device seems wrong or to be ejected.\n");
return -EIO;
}
int exfat_bdev_sync(struct super_block *sb)
{
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
struct exfat_sb_info *sbi = EXFAT_SB(sb);
long flags = sbi->debug_flags;
if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
return -EIO;
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
if (!p_bd->opened)
return -ENODEV;
return sync_blockdev(sb->s_bdev);
}
drivers/staging/exfat/exfat_cache.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include "exfat.h"
/* Local variables */
static DEFINE_MUTEX(f_mutex);
static DEFINE_MUTEX(b_mutex);
static struct buf_cache_t *FAT_cache_find(struct super_block *sb, sector_t sec)
{
s32 off;
struct buf_cache_t *bp, *hp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
off = (sec +
(sec >> p_fs->sectors_per_clu_bits)) & (FAT_CACHE_HASH_SIZE - 1);
hp = &p_fs->FAT_cache_hash_list[off];
for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) {
if ((bp->drv == p_fs->drv) && (bp->sec == sec)) {
WARN(!bp->buf_bh,
"[EXFAT] FAT_cache has no bh. It will make system panic.\n");
touch_buffer(bp->buf_bh);
return bp;
}
}
return NULL;
}
static void push_to_mru(struct buf_cache_t *bp, struct buf_cache_t *list)
{
bp->next = list->next;
bp->prev = list;
list->next->prev = bp;
list->next = bp;
}
static void push_to_lru(struct buf_cache_t *bp, struct buf_cache_t *list)
{
bp->prev = list->prev;
bp->next = list;
list->prev->next = bp;
list->prev = bp;
}
static void move_to_mru(struct buf_cache_t *bp, struct buf_cache_t *list)
{
bp->prev->next = bp->next;
bp->next->prev = bp->prev;
push_to_mru(bp, list);
}
static void move_to_lru(struct buf_cache_t *bp, struct buf_cache_t *list)
{
bp->prev->next = bp->next;
bp->next->prev = bp->prev;
push_to_lru(bp, list);
}
static struct buf_cache_t *FAT_cache_get(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bp = p_fs->FAT_cache_lru_list.prev;
move_to_mru(bp, &p_fs->FAT_cache_lru_list);
return bp;
}
static void FAT_cache_insert_hash(struct super_block *sb,
struct buf_cache_t *bp)
{
s32 off;
struct buf_cache_t *hp;
struct fs_info_t *p_fs;
p_fs = &(EXFAT_SB(sb)->fs_info);
off = (bp->sec +
(bp->sec >> p_fs->sectors_per_clu_bits)) &
(FAT_CACHE_HASH_SIZE - 1);
hp = &p_fs->FAT_cache_hash_list[off];
bp->hash_next = hp->hash_next;
bp->hash_prev = hp;
hp->hash_next->hash_prev = bp;
hp->hash_next = bp;
}
static void FAT_cache_remove_hash(struct buf_cache_t *bp)
{
(bp->hash_prev)->hash_next = bp->hash_next;
(bp->hash_next)->hash_prev = bp->hash_prev;
}
static void buf_cache_insert_hash(struct super_block *sb,
struct buf_cache_t *bp)
{
s32 off;
struct buf_cache_t *hp;
struct fs_info_t *p_fs;
p_fs = &(EXFAT_SB(sb)->fs_info);
off = (bp->sec +
(bp->sec >> p_fs->sectors_per_clu_bits)) &
(BUF_CACHE_HASH_SIZE - 1);
hp = &p_fs->buf_cache_hash_list[off];
bp->hash_next = hp->hash_next;
bp->hash_prev = hp;
hp->hash_next->hash_prev = bp;
hp->hash_next = bp;
}
static void buf_cache_remove_hash(struct buf_cache_t *bp)
{
(bp->hash_prev)->hash_next = bp->hash_next;
(bp->hash_next)->hash_prev = bp->hash_prev;
}
void exfat_buf_init(struct super_block *sb)
{
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
int i;
/* LRU list */
p_fs->FAT_cache_lru_list.next = &p_fs->FAT_cache_lru_list;
p_fs->FAT_cache_lru_list.prev = &p_fs->FAT_cache_lru_list;
for (i = 0; i < FAT_CACHE_SIZE; i++) {
p_fs->FAT_cache_array[i].drv = -1;
p_fs->FAT_cache_array[i].sec = ~0;
p_fs->FAT_cache_array[i].locked = false;
p_fs->FAT_cache_array[i].buf_bh = NULL;
p_fs->FAT_cache_array[i].prev = NULL;
p_fs->FAT_cache_array[i].next = NULL;
push_to_mru(&p_fs->FAT_cache_array[i],
&p_fs->FAT_cache_lru_list);
}
p_fs->buf_cache_lru_list.next = &p_fs->buf_cache_lru_list;
p_fs->buf_cache_lru_list.prev = &p_fs->buf_cache_lru_list;
for (i = 0; i < BUF_CACHE_SIZE; i++) {
p_fs->buf_cache_array[i].drv = -1;
p_fs->buf_cache_array[i].sec = ~0;
p_fs->buf_cache_array[i].locked = false;
p_fs->buf_cache_array[i].buf_bh = NULL;
p_fs->buf_cache_array[i].prev = NULL;
p_fs->buf_cache_array[i].next = NULL;
push_to_mru(&p_fs->buf_cache_array[i],
&p_fs->buf_cache_lru_list);
}
/* HASH list */
for (i = 0; i < FAT_CACHE_HASH_SIZE; i++) {
p_fs->FAT_cache_hash_list[i].drv = -1;
p_fs->FAT_cache_hash_list[i].sec = ~0;
p_fs->FAT_cache_hash_list[i].hash_next =
&p_fs->FAT_cache_hash_list[i];
p_fs->FAT_cache_hash_list[i].hash_prev =
&p_fs->FAT_cache_hash_list[i];
}
for (i = 0; i < FAT_CACHE_SIZE; i++)
FAT_cache_insert_hash(sb, &p_fs->FAT_cache_array[i]);
for (i = 0; i < BUF_CACHE_HASH_SIZE; i++) {
p_fs->buf_cache_hash_list[i].drv = -1;
p_fs->buf_cache_hash_list[i].sec = ~0;
p_fs->buf_cache_hash_list[i].hash_next =
&p_fs->buf_cache_hash_list[i];
p_fs->buf_cache_hash_list[i].hash_prev =
&p_fs->buf_cache_hash_list[i];
}
for (i = 0; i < BUF_CACHE_SIZE; i++)
buf_cache_insert_hash(sb, &p_fs->buf_cache_array[i]);
}
void exfat_buf_shutdown(struct super_block *sb)
{
}
static int __exfat_fat_read(struct super_block *sb, u32 loc, u32 *content)
{
s32 off;
u32 _content;
sector_t sec;
u8 *fat_sector, *fat_entry;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
sec = p_fs->FAT1_start_sector +
(loc >> (p_bd->sector_size_bits - 2));
off = (loc << 2) & p_bd->sector_size_mask;
fat_sector = exfat_fat_getblk(sb, sec);
if (!fat_sector)
return -1;
fat_entry = &fat_sector[off];
_content = GET32_A(fat_entry);
if (_content >= CLUSTER_32(0xFFFFFFF8)) {
*content = CLUSTER_32(~0);
return 0;
}
*content = CLUSTER_32(_content);
return 0;
}
/* in : sb, loc
* out: content
* returns 0 on success
* -1 on error
*/
int exfat_fat_read(struct super_block *sb, u32 loc, u32 *content)
{
s32 ret;
mutex_lock(&f_mutex);
ret = __exfat_fat_read(sb, loc, content);
mutex_unlock(&f_mutex);
return ret;
}
static s32 __exfat_fat_write(struct super_block *sb, u32 loc, u32 content)
{
s32 off;
sector_t sec;
u8 *fat_sector, *fat_entry;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
sec = p_fs->FAT1_start_sector + (loc >>
(p_bd->sector_size_bits - 2));
off = (loc << 2) & p_bd->sector_size_mask;
fat_sector = exfat_fat_getblk(sb, sec);
if (!fat_sector)
return -1;
fat_entry = &fat_sector[off];
SET32_A(fat_entry, content);
exfat_fat_modify(sb, sec);
return 0;
}
int exfat_fat_write(struct super_block *sb, u32 loc, u32 content)
{
s32 ret;
mutex_lock(&f_mutex);
ret = __exfat_fat_write(sb, loc, content);
mutex_unlock(&f_mutex);
return ret;
}
u8 *exfat_fat_getblk(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bp = FAT_cache_find(sb, sec);
if (bp) {
move_to_mru(bp, &p_fs->FAT_cache_lru_list);
return bp->buf_bh->b_data;
}
bp = FAT_cache_get(sb, sec);
FAT_cache_remove_hash(bp);
bp->drv = p_fs->drv;
bp->sec = sec;
bp->locked = false;
FAT_cache_insert_hash(sb, bp);
if (sector_read(sb, sec, &bp->buf_bh, 1) != 0) {
FAT_cache_remove_hash(bp);
bp->drv = -1;
bp->sec = ~0;
bp->locked = false;
bp->buf_bh = NULL;
move_to_lru(bp, &p_fs->FAT_cache_lru_list);
return NULL;
}
return bp->buf_bh->b_data;
}
void exfat_fat_modify(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
bp = FAT_cache_find(sb, sec);
if (bp)
sector_write(sb, sec, bp->buf_bh, 0);
}
void exfat_fat_release_all(struct super_block *sb)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
mutex_lock(&f_mutex);
bp = p_fs->FAT_cache_lru_list.next;
while (bp != &p_fs->FAT_cache_lru_list) {
if (bp->drv == p_fs->drv) {
bp->drv = -1;
bp->sec = ~0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);
bp->buf_bh = NULL;
}
}
bp = bp->next;
}
mutex_unlock(&f_mutex);
}
static struct buf_cache_t *buf_cache_find(struct super_block *sb, sector_t sec)
{
s32 off;
struct buf_cache_t *bp, *hp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
off = (sec + (sec >> p_fs->sectors_per_clu_bits)) &
(BUF_CACHE_HASH_SIZE - 1);
hp = &p_fs->buf_cache_hash_list[off];
for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) {
if ((bp->drv == p_fs->drv) && (bp->sec == sec)) {
touch_buffer(bp->buf_bh);
return bp;
}
}
return NULL;
}
static struct buf_cache_t *buf_cache_get(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bp = p_fs->buf_cache_lru_list.prev;
while (bp->locked)
bp = bp->prev;
move_to_mru(bp, &p_fs->buf_cache_lru_list);
return bp;
}
static u8 *__exfat_buf_getblk(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bp = buf_cache_find(sb, sec);
if (bp) {
move_to_mru(bp, &p_fs->buf_cache_lru_list);
return bp->buf_bh->b_data;
}
bp = buf_cache_get(sb, sec);
buf_cache_remove_hash(bp);
bp->drv = p_fs->drv;
bp->sec = sec;
bp->locked = false;
buf_cache_insert_hash(sb, bp);
if (sector_read(sb, sec, &bp->buf_bh, 1) != 0) {
buf_cache_remove_hash(bp);
bp->drv = -1;
bp->sec = ~0;
bp->locked = false;
bp->buf_bh = NULL;
move_to_lru(bp, &p_fs->buf_cache_lru_list);
return NULL;
}
return bp->buf_bh->b_data;
}
u8 *exfat_buf_getblk(struct super_block *sb, sector_t sec)
{
u8 *buf;
mutex_lock(&b_mutex);
buf = __exfat_buf_getblk(sb, sec);
mutex_unlock(&b_mutex);
return buf;
}
void exfat_buf_modify(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
mutex_lock(&b_mutex);
bp = buf_cache_find(sb, sec);
if (likely(bp))
sector_write(sb, sec, bp->buf_bh, 0);
WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
(unsigned long long)sec);
mutex_unlock(&b_mutex);
}
void exfat_buf_lock(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
mutex_lock(&b_mutex);
bp = buf_cache_find(sb, sec);
if (likely(bp))
bp->locked = true;
WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
(unsigned long long)sec);
mutex_unlock(&b_mutex);
}
void exfat_buf_unlock(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
mutex_lock(&b_mutex);
bp = buf_cache_find(sb, sec);
if (likely(bp))
bp->locked = false;
WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
(unsigned long long)sec);
mutex_unlock(&b_mutex);
}
void exfat_buf_release(struct super_block *sb, sector_t sec)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
mutex_lock(&b_mutex);
bp = buf_cache_find(sb, sec);
if (likely(bp)) {
bp->drv = -1;
bp->sec = ~0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);
bp->buf_bh = NULL;
}
move_to_lru(bp, &p_fs->buf_cache_lru_list);
}
mutex_unlock(&b_mutex);
}
void exfat_buf_release_all(struct super_block *sb)
{
struct buf_cache_t *bp;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
mutex_lock(&b_mutex);
bp = p_fs->buf_cache_lru_list.next;
while (bp != &p_fs->buf_cache_lru_list) {
if (bp->drv == p_fs->drv) {
bp->drv = -1;
bp->sec = ~0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);
bp->buf_bh = NULL;
}
}
bp = bp->next;
}
mutex_unlock(&b_mutex);
}
drivers/staging/exfat/exfat_core.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include "exfat.h"
static void __set_sb_dirty(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
sbi->s_dirt = 1;
}
static u8 name_buf[MAX_PATH_LENGTH * MAX_CHARSET_SIZE];
static u8 free_bit[] = {
0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 0 ~ 19 */
0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, /* 20 ~ 39 */
0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 40 ~ 59 */
0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 60 ~ 79 */
0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, /* 80 ~ 99 */
0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, /* 100 ~ 119 */
0, 1, 0, 2, 0, 1, 0, 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 120 ~ 139 */
0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, /* 140 ~ 159 */
0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 160 ~ 179 */
0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, /* 180 ~ 199 */
0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 200 ~ 219 */
0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 220 ~ 239 */
0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 /* 240 ~ 254 */
};
static u8 used_bit[] = {
0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, /* 0 ~ 19 */
2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, /* 20 ~ 39 */
2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, /* 40 ~ 59 */
4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, /* 60 ~ 79 */
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, /* 80 ~ 99 */
3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, /* 100 ~ 119 */
4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, /* 120 ~ 139 */
3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, /* 140 ~ 159 */
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, /* 160 ~ 179 */
4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, /* 180 ~ 199 */
3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, /* 200 ~ 219 */
5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, /* 220 ~ 239 */
4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 /* 240 ~ 255 */
};
#define BITMAP_LOC(v) ((v) >> 3)
#define BITMAP_SHIFT(v) ((v) & 0x07)
static inline s32 exfat_bitmap_test(u8 *bitmap, int i)
{
u8 data;
data = bitmap[BITMAP_LOC(i)];
if ((data >> BITMAP_SHIFT(i)) & 0x01)
return 1;
return 0;
}
static inline void exfat_bitmap_set(u8 *bitmap, int i)
{
bitmap[BITMAP_LOC(i)] |= (0x01 << BITMAP_SHIFT(i));
}
static inline void exfat_bitmap_clear(u8 *bitmap, int i)
{
bitmap[BITMAP_LOC(i)] &= ~(0x01 << BITMAP_SHIFT(i));
}
/*
* File System Management Functions
*/
void fs_set_vol_flags(struct super_block *sb, u32 new_flag)
{
struct pbr_sector_t *p_pbr;
struct bpbex_t *p_bpb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_fs->vol_flag == new_flag)
return;
p_fs->vol_flag = new_flag;
if (!p_fs->pbr_bh) {
if (sector_read(sb, p_fs->PBR_sector,
&p_fs->pbr_bh, 1) != 0)
return;
}
p_pbr = (struct pbr_sector_t *)p_fs->pbr_bh->b_data;
p_bpb = (struct bpbex_t *)p_pbr->bpb;
SET16(p_bpb->vol_flags, (u16)new_flag);
/* XXX duyoung
* what can we do here? (cuz fs_set_vol_flags() is void)
*/
if ((new_flag == VOL_DIRTY) && (!buffer_dirty(p_fs->pbr_bh)))
sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 1);
else
sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 0);
}
void fs_error(struct super_block *sb)
{
struct exfat_mount_options *opts = &EXFAT_SB(sb)->options;
if (opts->errors == EXFAT_ERRORS_PANIC) {
panic("[EXFAT] Filesystem panic from previous error\n");
} else if ((opts->errors == EXFAT_ERRORS_RO) && !sb_rdonly(sb)) {
sb->s_flags |= SB_RDONLY;
pr_err("[EXFAT] Filesystem has been set read-only\n");
}
}
/*
* Cluster Management Functions
*/
static s32 clear_cluster(struct super_block *sb, u32 clu)
{
sector_t s, n;
s32 ret = 0;
struct buffer_head *tmp_bh = NULL;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
if (clu == CLUSTER_32(0)) { /* FAT16 root_dir */
s = p_fs->root_start_sector;
n = p_fs->data_start_sector;
} else {
s = START_SECTOR(clu);
n = s + p_fs->sectors_per_clu;
}
for (; s < n; s++) {
ret = sector_read(sb, s, &tmp_bh, 0);
if (ret != 0)
return ret;
memset((char *)tmp_bh->b_data, 0x0, p_bd->sector_size);
ret = sector_write(sb, s, tmp_bh, 0);
if (ret != 0)
break;
}
brelse(tmp_bh);
return ret;
}
static s32 set_alloc_bitmap(struct super_block *sb, u32 clu)
{
int i, b;
sector_t sector;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
i = clu >> (p_bd->sector_size_bits + 3);
b = clu & ((p_bd->sector_size << 3) - 1);
sector = START_SECTOR(p_fs->map_clu) + i;
exfat_bitmap_set((u8 *)p_fs->vol_amap[i]->b_data, b);
return sector_write(sb, sector, p_fs->vol_amap[i], 0);
}
static s32 clr_alloc_bitmap(struct super_block *sb, u32 clu)
{
int i, b;
sector_t sector;
#ifdef CONFIG_STAGING_EXFAT_DISCARD
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_mount_options *opts = &sbi->options;
int ret;
#endif /* CONFIG_STAGING_EXFAT_DISCARD */
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
i = clu >> (p_bd->sector_size_bits + 3);
b = clu & ((p_bd->sector_size << 3) - 1);
sector = START_SECTOR(p_fs->map_clu) + i;
exfat_bitmap_clear((u8 *)p_fs->vol_amap[i]->b_data, b);
#ifdef CONFIG_STAGING_EXFAT_DISCARD
if (opts->discard) {
ret = sb_issue_discard(sb, START_SECTOR(clu),
(1 << p_fs->sectors_per_clu_bits),
GFP_NOFS, 0);
if (ret == -EOPNOTSUPP) {
pr_warn("discard not supported by device, disabling");
opts->discard = 0;
} else {
return ret;
}
}
#endif /* CONFIG_STAGING_EXFAT_DISCARD */
return sector_write(sb, sector, p_fs->vol_amap[i], 0);
}
static u32 test_alloc_bitmap(struct super_block *sb, u32 clu)
{
int i, map_i, map_b;
u32 clu_base, clu_free;
u8 k, clu_mask;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
clu_base = (clu & ~(0x7)) + 2;
clu_mask = (1 << (clu - clu_base + 2)) - 1;
map_i = clu >> (p_bd->sector_size_bits + 3);
map_b = (clu >> 3) & p_bd->sector_size_mask;
for (i = 2; i < p_fs->num_clusters; i += 8) {
k = *(((u8 *)p_fs->vol_amap[map_i]->b_data) + map_b);
if (clu_mask > 0) {
k |= clu_mask;
clu_mask = 0;
}
if (k < 0xFF) {
clu_free = clu_base + free_bit[k];
if (clu_free < p_fs->num_clusters)
return clu_free;
}
clu_base += 8;
if (((++map_b) >= p_bd->sector_size) ||
(clu_base >= p_fs->num_clusters)) {
if ((++map_i) >= p_fs->map_sectors) {
clu_base = 2;
map_i = 0;
}
map_b = 0;
}
}
return CLUSTER_32(~0);
}
s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc,
struct chain_t *p_chain)
{
s32 num_clusters = 0;
u32 hint_clu, new_clu, last_clu = CLUSTER_32(~0);
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
hint_clu = p_chain->dir;
if (hint_clu == CLUSTER_32(~0)) {
hint_clu = test_alloc_bitmap(sb, p_fs->clu_srch_ptr - 2);
if (hint_clu == CLUSTER_32(~0))
return 0;
} else if (hint_clu >= p_fs->num_clusters) {
hint_clu = 2;
p_chain->flags = 0x01;
}
__set_sb_dirty(sb);
p_chain->dir = CLUSTER_32(~0);
while ((new_clu = test_alloc_bitmap(sb, hint_clu - 2)) != CLUSTER_32(~0)) {
if (new_clu != hint_clu) {
if (p_chain->flags == 0x03) {
exfat_chain_cont_cluster(sb, p_chain->dir,
num_clusters);
p_chain->flags = 0x01;
}
}
if (set_alloc_bitmap(sb, new_clu - 2) != 0)
return -EIO;
num_clusters++;
if (p_chain->flags == 0x01) {
if (exfat_fat_write(sb, new_clu, CLUSTER_32(~0)) < 0)
return -EIO;
}
if (p_chain->dir == CLUSTER_32(~0)) {
p_chain->dir = new_clu;
} else {
if (p_chain->flags == 0x01) {
if (exfat_fat_write(sb, last_clu, new_clu) < 0)
return -EIO;
}
}
last_clu = new_clu;
if ((--num_alloc) == 0) {
p_fs->clu_srch_ptr = hint_clu;
if (p_fs->used_clusters != UINT_MAX)
p_fs->used_clusters += num_clusters;
p_chain->size += num_clusters;
return num_clusters;
}
hint_clu = new_clu + 1;
if (hint_clu >= p_fs->num_clusters) {
hint_clu = 2;
if (p_chain->flags == 0x03) {
exfat_chain_cont_cluster(sb, p_chain->dir,
num_clusters);
p_chain->flags = 0x01;
}
}
}
p_fs->clu_srch_ptr = hint_clu;
if (p_fs->used_clusters != UINT_MAX)
p_fs->used_clusters += num_clusters;
p_chain->size += num_clusters;
return num_clusters;
}
void exfat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
s32 do_relse)
{
s32 num_clusters = 0;
u32 clu;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
int i;
sector_t sector;
if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0)))
return;
if (p_chain->size <= 0) {
pr_err("[EXFAT] free_cluster : skip free-req clu:%u, because of zero-size truncation\n",
p_chain->dir);
return;
}
__set_sb_dirty(sb);
clu = p_chain->dir;
if (p_chain->flags == 0x03) {
do {
if (do_relse) {
sector = START_SECTOR(clu);
for (i = 0; i < p_fs->sectors_per_clu; i++)
exfat_buf_release(sb, sector + i);
}
if (clr_alloc_bitmap(sb, clu - 2) != 0)
break;
clu++;
num_clusters++;
} while (num_clusters < p_chain->size);
} else {
do {
if (p_fs->dev_ejected)
break;
if (do_relse) {
sector = START_SECTOR(clu);
for (i = 0; i < p_fs->sectors_per_clu; i++)
exfat_buf_release(sb, sector + i);
}
if (clr_alloc_bitmap(sb, clu - 2) != 0)
break;
if (exfat_fat_read(sb, clu, &clu) == -1)
break;
num_clusters++;
} while ((clu != CLUSTER_32(0)) && (clu != CLUSTER_32(~0)));
}
if (p_fs->used_clusters != UINT_MAX)
p_fs->used_clusters -= num_clusters;
}
static u32 find_last_cluster(struct super_block *sb, struct chain_t *p_chain)
{
u32 clu, next;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
clu = p_chain->dir;
if (p_chain->flags == 0x03) {
clu += p_chain->size - 1;
} else {
while ((exfat_fat_read(sb, clu, &next) == 0) &&
(next != CLUSTER_32(~0))) {
if (p_fs->dev_ejected)
break;
clu = next;
}
}
return clu;
}
s32 count_num_clusters(struct super_block *sb, struct chain_t *p_chain)
{
int i, count = 0;
u32 clu;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0)))
return 0;
clu = p_chain->dir;
if (p_chain->flags == 0x03) {
count = p_chain->size;
} else {
for (i = 2; i < p_fs->num_clusters; i++) {
count++;
if (exfat_fat_read(sb, clu, &clu) != 0)
return 0;
if (clu == CLUSTER_32(~0))
break;
}
}
return count;
}
s32 exfat_count_used_clusters(struct super_block *sb)
{
int i, map_i, map_b, count = 0;
u8 k;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
map_i = 0;
map_b = 0;
for (i = 2; i < p_fs->num_clusters; i += 8) {
k = *(((u8 *)p_fs->vol_amap[map_i]->b_data) + map_b);
count += used_bit[k];
if ((++map_b) >= p_bd->sector_size) {
map_i++;
map_b = 0;
}
}
return count;
}
void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len)
{
if (len == 0)
return;
while (len > 1) {
if (exfat_fat_write(sb, chain, chain + 1) < 0)
break;
chain++;
len--;
}
exfat_fat_write(sb, chain, CLUSTER_32(~0));
}
/*
* Allocation Bitmap Management Functions
*/
s32 load_alloc_bitmap(struct super_block *sb)
{
int i, j, ret;
u32 map_size;
u32 type;
sector_t sector;
struct chain_t clu;
struct bmap_dentry_t *ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
clu.dir = p_fs->root_dir;
clu.flags = 0x01;
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
for (i = 0; i < p_fs->dentries_per_clu; i++) {
ep = (struct bmap_dentry_t *)get_entry_in_dir(sb, &clu,
i, NULL);
if (!ep)
return -ENOENT;
type = exfat_get_entry_type((struct dentry_t *)ep);
if (type == TYPE_UNUSED)
break;
if (type != TYPE_BITMAP)
continue;
if (ep->flags == 0x0) {
p_fs->map_clu = GET32_A(ep->start_clu);
map_size = (u32)GET64_A(ep->size);
p_fs->map_sectors = ((map_size - 1) >> p_bd->sector_size_bits) + 1;
p_fs->vol_amap = kmalloc_array(p_fs->map_sectors,
sizeof(struct buffer_head *),
GFP_KERNEL);
if (!p_fs->vol_amap)
return -ENOMEM;
sector = START_SECTOR(p_fs->map_clu);
for (j = 0; j < p_fs->map_sectors; j++) {
p_fs->vol_amap[j] = NULL;
ret = sector_read(sb, sector + j, &p_fs->vol_amap[j], 1);
if (ret != 0) {
/* release all buffers and free vol_amap */
i = 0;
while (i < j)
brelse(p_fs->vol_amap[i++]);
kfree(p_fs->vol_amap);
p_fs->vol_amap = NULL;
return ret;
}
}
p_fs->pbr_bh = NULL;
return 0;
}
}
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
return -EIO;
}
return -EFSCORRUPTED;
}
void free_alloc_bitmap(struct super_block *sb)
{
int i;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
brelse(p_fs->pbr_bh);
for (i = 0; i < p_fs->map_sectors; i++)
__brelse(p_fs->vol_amap[i]);
kfree(p_fs->vol_amap);
p_fs->vol_amap = NULL;
}
/*
* Upcase table Management Functions
*/
static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
u32 num_sectors, u32 utbl_checksum)
{
int i, ret = -EINVAL;
u32 j;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
struct buffer_head *tmp_bh = NULL;
sector_t end_sector = num_sectors + sector;
bool skip = false;
u32 index = 0;
u16 uni = 0;
u16 **upcase_table;
u32 checksum = 0;
upcase_table = kmalloc_array(UTBL_COL_COUNT, sizeof(u16 *), GFP_KERNEL);
p_fs->vol_utbl = upcase_table;
if (!upcase_table)
return -ENOMEM;
memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
while (sector < end_sector) {
ret = sector_read(sb, sector, &tmp_bh, 1);
if (ret != 0) {
pr_debug("sector read (0x%llX)fail\n",
(unsigned long long)sector);
goto error;
}
sector++;
for (i = 0; i < p_bd->sector_size && index <= 0xFFFF; i += 2) {
uni = GET16(((u8 *)tmp_bh->b_data) + i);
checksum = ((checksum & 1) ? 0x80000000 : 0) +
(checksum >> 1) + *(((u8 *)tmp_bh->b_data) +
i);
checksum = ((checksum & 1) ? 0x80000000 : 0) +
(checksum >> 1) + *(((u8 *)tmp_bh->b_data) +
(i + 1));
if (skip) {
pr_debug("skip from 0x%X ", index);
index += uni;
pr_debug("to 0x%X (amount of 0x%X)\n",
index, uni);
skip = false;
} else if (uni == index) {
index++;
} else if (uni == 0xFFFF) {
skip = true;
} else { /* uni != index , uni != 0xFFFF */
u16 col_index = get_col_index(index);
if (!upcase_table[col_index]) {
pr_debug("alloc = 0x%X\n", col_index);
upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
sizeof(u16), GFP_KERNEL);
if (!upcase_table[col_index]) {
ret = -ENOMEM;
goto error;
}
for (j = 0; j < UTBL_ROW_COUNT; j++)
upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j;
}
upcase_table[col_index][get_row_index(index)] = uni;
index++;
}
}
}
if (index >= 0xFFFF && utbl_checksum == checksum) {
if (tmp_bh)
brelse(tmp_bh);
return 0;
}
ret = -EINVAL;
error:
if (tmp_bh)
brelse(tmp_bh);
free_upcase_table(sb);
return ret;
}
static s32 __load_default_upcase_table(struct super_block *sb)
{
int i, ret = -EINVAL;
u32 j;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bool skip = false;
u32 index = 0;
u16 uni = 0;
u16 **upcase_table;
upcase_table = kmalloc_array(UTBL_COL_COUNT, sizeof(u16 *), GFP_KERNEL);
p_fs->vol_utbl = upcase_table;
if (!upcase_table)
return -ENOMEM;
memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
for (i = 0; index <= 0xFFFF && i < NUM_UPCASE * 2; i += 2) {
uni = GET16(uni_upcase + i);
if (skip) {
pr_debug("skip from 0x%X ", index);
index += uni;
pr_debug("to 0x%X (amount of 0x%X)\n", index, uni);
skip = false;
} else if (uni == index) {
index++;
} else if (uni == 0xFFFF) {
skip = true;
} else { /* uni != index , uni != 0xFFFF */
u16 col_index = get_col_index(index);
if (!upcase_table[col_index]) {
pr_debug("alloc = 0x%X\n", col_index);
upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
sizeof(u16),
GFP_KERNEL);
if (!upcase_table[col_index]) {
ret = -ENOMEM;
goto error;
}
for (j = 0; j < UTBL_ROW_COUNT; j++)
upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j;
}
upcase_table[col_index][get_row_index(index)] = uni;
index++;
}
}
if (index >= 0xFFFF)
return 0;
error:
/* FATAL error: default upcase table has error */
free_upcase_table(sb);
return ret;
}
s32 load_upcase_table(struct super_block *sb)
{
int i;
u32 tbl_clu, tbl_size;
sector_t sector;
u32 type, num_sectors;
struct chain_t clu;
struct case_dentry_t *ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
clu.dir = p_fs->root_dir;
clu.flags = 0x01;
if (p_fs->dev_ejected)
return -EIO;
while (clu.dir != CLUSTER_32(~0)) {
for (i = 0; i < p_fs->dentries_per_clu; i++) {
ep = (struct case_dentry_t *)get_entry_in_dir(sb, &clu,
i, NULL);
if (!ep)
return -ENOENT;
type = exfat_get_entry_type((struct dentry_t *)ep);
if (type == TYPE_UNUSED)
break;
if (type != TYPE_UPCASE)
continue;
tbl_clu = GET32_A(ep->start_clu);
tbl_size = (u32)GET64_A(ep->size);
sector = START_SECTOR(tbl_clu);
num_sectors = ((tbl_size - 1) >> p_bd->sector_size_bits) + 1;
if (__load_upcase_table(sb, sector, num_sectors,
GET32_A(ep->checksum)) != 0)
break;
return 0;
}
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
return -EIO;
}
/* load default upcase table */
return __load_default_upcase_table(sb);
}
void free_upcase_table(struct super_block *sb)
{
u32 i;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
u16 **upcase_table;
upcase_table = p_fs->vol_utbl;
for (i = 0; i < UTBL_COL_COUNT; i++)
kfree(upcase_table[i]);
kfree(p_fs->vol_utbl);
p_fs->vol_utbl = NULL;
}
/*
* Directory Entry Management Functions
*/
u32 exfat_get_entry_type(struct dentry_t *p_entry)
{
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
if (ep->type == 0x0) {
return TYPE_UNUSED;
} else if (ep->type < 0x80) {
return TYPE_DELETED;
} else if (ep->type == 0x80) {
return TYPE_INVALID;
} else if (ep->type < 0xA0) {
if (ep->type == 0x81) {
return TYPE_BITMAP;
} else if (ep->type == 0x82) {
return TYPE_UPCASE;
} else if (ep->type == 0x83) {
return TYPE_VOLUME;
} else if (ep->type == 0x85) {
if (GET16_A(ep->attr) & ATTR_SUBDIR)
return TYPE_DIR;
else
return TYPE_FILE;
}
return TYPE_CRITICAL_PRI;
} else if (ep->type < 0xC0) {
if (ep->type == 0xA0)
return TYPE_GUID;
else if (ep->type == 0xA1)
return TYPE_PADDING;
else if (ep->type == 0xA2)
return TYPE_ACLTAB;
return TYPE_BENIGN_PRI;
} else if (ep->type < 0xE0) {
if (ep->type == 0xC0)
return TYPE_STREAM;
else if (ep->type == 0xC1)
return TYPE_EXTEND;
else if (ep->type == 0xC2)
return TYPE_ACL;
return TYPE_CRITICAL_SEC;
}
return TYPE_BENIGN_SEC;
}
static void exfat_set_entry_type(struct dentry_t *p_entry, u32 type)
{
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
if (type == TYPE_UNUSED) {
ep->type = 0x0;
} else if (type == TYPE_DELETED) {
ep->type &= ~0x80;
} else if (type == TYPE_STREAM) {
ep->type = 0xC0;
} else if (type == TYPE_EXTEND) {
ep->type = 0xC1;
} else if (type == TYPE_BITMAP) {
ep->type = 0x81;
} else if (type == TYPE_UPCASE) {
ep->type = 0x82;
} else if (type == TYPE_VOLUME) {
ep->type = 0x83;
} else if (type == TYPE_DIR) {
ep->type = 0x85;
SET16_A(ep->attr, ATTR_SUBDIR);
} else if (type == TYPE_FILE) {
ep->type = 0x85;
SET16_A(ep->attr, ATTR_ARCHIVE);
}
}
u32 exfat_get_entry_attr(struct dentry_t *p_entry)
{
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
return (u32)GET16_A(ep->attr);
}
void exfat_set_entry_attr(struct dentry_t *p_entry, u32 attr)
{
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
SET16_A(ep->attr, (u16)attr);
}
u8 exfat_get_entry_flag(struct dentry_t *p_entry)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
return ep->flags;
}
void exfat_set_entry_flag(struct dentry_t *p_entry, u8 flags)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
ep->flags = flags;
}
u32 exfat_get_entry_clu0(struct dentry_t *p_entry)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
return GET32_A(ep->start_clu);
}
void exfat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
SET32_A(ep->start_clu, start_clu);
}
u64 exfat_get_entry_size(struct dentry_t *p_entry)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
return GET64_A(ep->valid_size);
}
void exfat_set_entry_size(struct dentry_t *p_entry, u64 size)
{
struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
SET64_A(ep->valid_size, size);
SET64_A(ep->size, size);
}
void exfat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
u8 mode)
{
u16 t = 0x00, d = 0x21;
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
switch (mode) {
case TM_CREATE:
t = GET16_A(ep->create_time);
d = GET16_A(ep->create_date);
break;
case TM_MODIFY:
t = GET16_A(ep->modify_time);
d = GET16_A(ep->modify_date);
break;
case TM_ACCESS:
t = GET16_A(ep->access_time);
d = GET16_A(ep->access_date);
break;
}
tp->sec = (t & 0x001F) << 1;
tp->min = (t >> 5) & 0x003F;
tp->hour = (t >> 11);
tp->day = (d & 0x001F);
tp->mon = (d >> 5) & 0x000F;
tp->year = (d >> 9);
}
void exfat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
u8 mode)
{
u16 t, d;
struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
t = (tp->hour << 11) | (tp->min << 5) | (tp->sec >> 1);
d = (tp->year << 9) | (tp->mon << 5) | tp->day;
switch (mode) {
case TM_CREATE:
SET16_A(ep->create_time, t);
SET16_A(ep->create_date, d);
break;
case TM_MODIFY:
SET16_A(ep->modify_time, t);
SET16_A(ep->modify_date, d);
break;
case TM_ACCESS:
SET16_A(ep->access_time, t);
SET16_A(ep->access_date, d);
break;
}
}
static void init_file_entry(struct file_dentry_t *ep, u32 type)
{
struct timestamp_t tm, *tp;
exfat_set_entry_type((struct dentry_t *)ep, type);
tp = tm_current(&tm);
exfat_set_entry_time((struct dentry_t *)ep, tp, TM_CREATE);
exfat_set_entry_time((struct dentry_t *)ep, tp, TM_MODIFY);
exfat_set_entry_time((struct dentry_t *)ep, tp, TM_ACCESS);
ep->create_time_ms = 0;
ep->modify_time_ms = 0;
ep->access_time_ms = 0;
}
static void init_strm_entry(struct strm_dentry_t *ep, u8 flags, u32 start_clu, u64 size)
{
exfat_set_entry_type((struct dentry_t *)ep, TYPE_STREAM);
ep->flags = flags;
SET32_A(ep->start_clu, start_clu);
SET64_A(ep->valid_size, size);
SET64_A(ep->size, size);
}
static void init_name_entry(struct name_dentry_t *ep, u16 *uniname)
{
int i;
exfat_set_entry_type((struct dentry_t *)ep, TYPE_EXTEND);
ep->flags = 0x0;
for (i = 0; i < 30; i++, i++) {
SET16_A(ep->unicode_0_14 + i, *uniname);
if (*uniname == 0x0)
break;
uniname++;
}
}
static s32 exfat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir,
s32 entry, u32 type, u32 start_clu, u64 size)
{
sector_t sector;
u8 flags;
struct file_dentry_t *file_ep;
struct strm_dentry_t *strm_ep;
flags = (type == TYPE_FILE) ? 0x01 : 0x03;
/* we cannot use get_entry_set_in_dir here because file ep is not initialized yet */
file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
&sector);
if (!file_ep)
return -ENOENT;
strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry + 1,
&sector);
if (!strm_ep)
return -ENOENT;
init_file_entry(file_ep, type);
exfat_buf_modify(sb, sector);
init_strm_entry(strm_ep, flags, start_clu, size);
exfat_buf_modify(sb, sector);
return 0;
}
static s32 exfat_init_ext_entry(struct super_block *sb, struct chain_t *p_dir,
s32 entry, s32 num_entries,
struct uni_name_t *p_uniname)
{
int i;
sector_t sector;
u16 *uniname = p_uniname->name;
struct file_dentry_t *file_ep;
struct strm_dentry_t *strm_ep;
struct name_dentry_t *name_ep;
file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
&sector);
if (!file_ep)
return -ENOENT;
file_ep->num_ext = (u8)(num_entries - 1);
exfat_buf_modify(sb, sector);
strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry + 1,
&sector);
if (!strm_ep)
return -ENOENT;
strm_ep->name_len = p_uniname->name_len;
SET16_A(strm_ep->name_hash, p_uniname->name_hash);
exfat_buf_modify(sb, sector);
for (i = 2; i < num_entries; i++) {
name_ep = (struct name_dentry_t *)get_entry_in_dir(sb, p_dir,
entry + i,
&sector);
if (!name_ep)
return -ENOENT;
init_name_entry(name_ep, uniname);
exfat_buf_modify(sb, sector);
uniname += 15;
}
update_dir_checksum(sb, p_dir, entry);
return 0;
}
void exfat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
s32 entry, s32 order, s32 num_entries)
{
int i;
sector_t sector;
struct dentry_t *ep;
for (i = order; i < num_entries; i++) {
ep = get_entry_in_dir(sb, p_dir, entry + i, &sector);
if (!ep)
return;
exfat_set_entry_type(ep, TYPE_DELETED);
exfat_buf_modify(sb, sector);
}
}
void update_dir_checksum(struct super_block *sb, struct chain_t *p_dir,
s32 entry)
{
int i, num_entries;
sector_t sector;
u16 chksum;
struct file_dentry_t *file_ep;
struct dentry_t *ep;
file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
&sector);
if (!file_ep)
return;
exfat_buf_lock(sb, sector);
num_entries = (s32)file_ep->num_ext + 1;
chksum = calc_checksum_2byte((void *)file_ep, DENTRY_SIZE, 0,
CS_DIR_ENTRY);
for (i = 1; i < num_entries; i++) {
ep = get_entry_in_dir(sb, p_dir, entry + i, NULL);
if (!ep) {
exfat_buf_unlock(sb, sector);
return;
}
chksum = calc_checksum_2byte((void *)ep, DENTRY_SIZE, chksum,
CS_DEFAULT);
}
SET16_A(file_ep->checksum, chksum);
exfat_buf_modify(sb, sector);
exfat_buf_unlock(sb, sector);
}
static s32 __write_partial_entries_in_entry_set(struct super_block *sb,
struct entry_set_cache_t *es,
sector_t sec, s32 off, u32 count)
{
s32 num_entries, buf_off = (off - es->offset);
u32 remaining_byte_in_sector, copy_entries;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
u32 clu;
u8 *buf, *esbuf = (u8 *)&es->__buf;
pr_debug("%s entered es %p sec %llu off %d count %d\n",
__func__, es, (unsigned long long)sec, off, count);
num_entries = count;
while (num_entries) {
/* white per sector base */
remaining_byte_in_sector = (1 << p_bd->sector_size_bits) - off;
copy_entries = min_t(s32,
remaining_byte_in_sector >> DENTRY_SIZE_BITS,
num_entries);
buf = exfat_buf_getblk(sb, sec);
if (!buf)
goto err_out;
pr_debug("es->buf %p buf_off %u\n", esbuf, buf_off);
pr_debug("copying %d entries from %p to sector %llu\n",
copy_entries, (esbuf + buf_off),
(unsigned long long)sec);
memcpy(buf + off, esbuf + buf_off,
copy_entries << DENTRY_SIZE_BITS);
exfat_buf_modify(sb, sec);
num_entries -= copy_entries;
if (num_entries) {
/* get next sector */
if (IS_LAST_SECTOR_IN_CLUSTER(sec)) {
clu = GET_CLUSTER_FROM_SECTOR(sec);
if (es->alloc_flag == 0x03) {
clu++;
} else {
if (exfat_fat_read(sb, clu, &clu) == -1)
goto err_out;
}
sec = START_SECTOR(clu);
} else {
sec++;
}
off = 0;
buf_off += copy_entries << DENTRY_SIZE_BITS;
}
}
pr_debug("%s exited successfully\n", __func__);
return 0;
err_out:
pr_debug("%s failed\n", __func__);
return -EINVAL;
}
/* write back all entries in entry set */
static s32 write_whole_entry_set(struct super_block *sb, struct entry_set_cache_t *es)
{
return __write_partial_entries_in_entry_set(sb, es, es->sector,
es->offset,
es->num_entries);
}
void update_dir_checksum_with_entry_set(struct super_block *sb,
struct entry_set_cache_t *es)
{
struct dentry_t *ep;
u16 chksum = 0;
s32 chksum_type = CS_DIR_ENTRY, i;
ep = (struct dentry_t *)&es->__buf;
for (i = 0; i < es->num_entries; i++) {
pr_debug("%s ep %p\n", __func__, ep);
chksum = calc_checksum_2byte((void *)ep, DENTRY_SIZE, chksum,
chksum_type);
ep++;
chksum_type = CS_DEFAULT;
}
ep = (struct dentry_t *)&es->__buf;
SET16_A(((struct file_dentry_t *)ep)->checksum, chksum);
write_whole_entry_set(sb, es);
}
static s32 _walk_fat_chain(struct super_block *sb, struct chain_t *p_dir,
s32 byte_offset, u32 *clu)
{
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
s32 clu_offset;
u32 cur_clu;
clu_offset = byte_offset >> p_fs->cluster_size_bits;
cur_clu = p_dir->dir;
if (p_dir->flags == 0x03) {
cur_clu += clu_offset;
} else {
while (clu_offset > 0) {
if (exfat_fat_read(sb, cur_clu, &cur_clu) == -1)
return -EIO;
clu_offset--;
}
}
if (clu)
*clu = cur_clu;
return 0;
}
static s32 find_location(struct super_block *sb, struct chain_t *p_dir, s32 entry,
sector_t *sector, s32 *offset)
{
s32 off, ret;
u32 clu = 0;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
off = entry << DENTRY_SIZE_BITS;
if (p_dir->dir == CLUSTER_32(0)) { /* FAT16 root_dir */
*offset = off & p_bd->sector_size_mask;
*sector = off >> p_bd->sector_size_bits;
*sector += p_fs->root_start_sector;
} else {
ret = _walk_fat_chain(sb, p_dir, off, &clu);
if (ret != 0)
return ret;
/* byte offset in cluster */
off &= p_fs->cluster_size - 1;
/* byte offset in sector */
*offset = off & p_bd->sector_size_mask;
/* sector offset in cluster */
*sector = off >> p_bd->sector_size_bits;
*sector += START_SECTOR(clu);
}
return 0;
}
struct dentry_t *get_entry_in_dir(struct super_block *sb, struct chain_t *p_dir,
s32 entry, sector_t *sector)
{
s32 off;
sector_t sec;
u8 *buf;
if (find_location(sb, p_dir, entry, &sec, &off) != 0)
return NULL;
buf = exfat_buf_getblk(sb, sec);
if (!buf)
return NULL;
if (sector)
*sector = sec;
return (struct dentry_t *)(buf + off);
}
/* returns a set of dentries for a file or dir.
* Note that this is a copy (dump) of dentries so that user should call write_entry_set()
* to apply changes made in this entry set to the real device.
* in:
* sb+p_dir+entry: indicates a file/dir
* type: specifies how many dentries should be included.
* out:
* file_ep: will point the first dentry(= file dentry) on success
* return:
* pointer of entry set on success,
* NULL on failure.
*/
#define ES_MODE_STARTED 0
#define ES_MODE_GET_FILE_ENTRY 1
#define ES_MODE_GET_STRM_ENTRY 2
#define ES_MODE_GET_NAME_ENTRY 3
#define ES_MODE_GET_CRITICAL_SEC_ENTRY 4
struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u32 type,
struct dentry_t **file_ep)
{
s32 off, ret, byte_offset;
u32 clu = 0;
sector_t sec;
u32 entry_type;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
struct entry_set_cache_t *es = NULL;
struct dentry_t *ep, *pos;
u8 *buf;
u8 num_entries;
s32 mode = ES_MODE_STARTED;
size_t bufsize;
pr_debug("%s entered p_dir dir %u flags %x size %d\n",
__func__, p_dir->dir, p_dir->flags, p_dir->size);
byte_offset = entry << DENTRY_SIZE_BITS;
ret = _walk_fat_chain(sb, p_dir, byte_offset, &clu);
if (ret != 0)
return NULL;
/* byte offset in cluster */
byte_offset &= p_fs->cluster_size - 1;
/* byte offset in sector */
off = byte_offset & p_bd->sector_size_mask;
/* sector offset in cluster */
sec = byte_offset >> p_bd->sector_size_bits;
sec += START_SECTOR(clu);
buf = exfat_buf_getblk(sb, sec);
if (!buf)
goto err_out;
ep = (struct dentry_t *)(buf + off);
entry_type = exfat_get_entry_type(ep);
if ((entry_type != TYPE_FILE) && (entry_type != TYPE_DIR))
goto err_out;
if (type == ES_ALL_ENTRIES)
num_entries = ((struct file_dentry_t *)ep)->num_ext + 1;
else
num_entries = type;
bufsize = offsetof(struct entry_set_cache_t, __buf) + (num_entries) *
sizeof(struct dentry_t);
pr_debug("%s: trying to kmalloc %zx bytes for %d entries\n", __func__,
bufsize, num_entries);
es = kmalloc(bufsize, GFP_KERNEL);
if (!es)
goto err_out;
es->num_entries = num_entries;
es->sector = sec;
es->offset = off;
es->alloc_flag = p_dir->flags;
pos = (struct dentry_t *)&es->__buf;
while (num_entries) {
/*
* instead of copying whole sector, we will check every entry.
* this will provide minimum stablity and consistency.
*/
entry_type = exfat_get_entry_type(ep);
if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED))
goto err_out;
switch (mode) {
case ES_MODE_STARTED:
if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR))
mode = ES_MODE_GET_FILE_ENTRY;
else
goto err_out;
break;
case ES_MODE_GET_FILE_ENTRY:
if (entry_type == TYPE_STREAM)
mode = ES_MODE_GET_STRM_ENTRY;
else
goto err_out;
break;
case ES_MODE_GET_STRM_ENTRY:
if (entry_type == TYPE_EXTEND)
mode = ES_MODE_GET_NAME_ENTRY;
else
goto err_out;
break;
case ES_MODE_GET_NAME_ENTRY:
if (entry_type == TYPE_EXTEND)
break;
else if (entry_type == TYPE_STREAM)
goto err_out;
else if (entry_type & TYPE_CRITICAL_SEC)
mode = ES_MODE_GET_CRITICAL_SEC_ENTRY;
else
goto err_out;
break;
case ES_MODE_GET_CRITICAL_SEC_ENTRY:
if ((entry_type == TYPE_EXTEND) ||
(entry_type == TYPE_STREAM))
goto err_out;
else if ((entry_type & TYPE_CRITICAL_SEC) !=
TYPE_CRITICAL_SEC)
goto err_out;
break;
}
memcpy(pos, ep, sizeof(struct dentry_t));
if (--num_entries == 0)
break;
if (((off + DENTRY_SIZE) & p_bd->sector_size_mask) <
(off & p_bd->sector_size_mask)) {
/* get the next sector */
if (IS_LAST_SECTOR_IN_CLUSTER(sec)) {
if (es->alloc_flag == 0x03) {
clu++;
} else {
if (exfat_fat_read(sb, clu, &clu) == -1)
goto err_out;
}
sec = START_SECTOR(clu);
} else {
sec++;
}
buf = exfat_buf_getblk(sb, sec);
if (!buf)
goto err_out;
off = 0;
ep = (struct dentry_t *)(buf);
} else {
ep++;
off += DENTRY_SIZE;
}
pos++;
}
if (file_ep)
*file_ep = (struct dentry_t *)&es->__buf;
pr_debug("%s exiting es %p sec %llu offset %d flags %d, num_entries %u buf ptr %p\n",
__func__, es, (unsigned long long)es->sector, es->offset,
es->alloc_flag, es->num_entries, &es->__buf);
return es;
err_out:
pr_debug("%s exited NULL (es %p)\n", __func__, es);
kfree(es);
return NULL;
}
void release_entry_set(struct entry_set_cache_t *es)
{
pr_debug("%s es=%p\n", __func__, es);
kfree(es);
}
/* search EMPTY CONTINUOUS "num_entries" entries */
static s32 search_deleted_or_unused_entry(struct super_block *sb,
struct chain_t *p_dir,
s32 num_entries)
{
int i, dentry, num_empty = 0;
s32 dentries_per_clu;
u32 type;
struct chain_t clu;
struct dentry_t *ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
dentries_per_clu = p_fs->dentries_in_root;
else
dentries_per_clu = p_fs->dentries_per_clu;
if (p_fs->hint_uentry.dir == p_dir->dir) {
if (p_fs->hint_uentry.entry == -1)
return -1;
clu.dir = p_fs->hint_uentry.clu.dir;
clu.size = p_fs->hint_uentry.clu.size;
clu.flags = p_fs->hint_uentry.clu.flags;
dentry = p_fs->hint_uentry.entry;
} else {
p_fs->hint_uentry.entry = -1;
clu.dir = p_dir->dir;
clu.size = p_dir->size;
clu.flags = p_dir->flags;
dentry = 0;
}
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
i = dentry % dentries_per_clu;
else
i = dentry & (dentries_per_clu - 1);
for (; i < dentries_per_clu; i++, dentry++) {
ep = get_entry_in_dir(sb, &clu, i, NULL);
if (!ep)
return -1;
type = exfat_get_entry_type(ep);
if (type == TYPE_UNUSED) {
num_empty++;
if (p_fs->hint_uentry.entry == -1) {
p_fs->hint_uentry.dir = p_dir->dir;
p_fs->hint_uentry.entry = dentry;
p_fs->hint_uentry.clu.dir = clu.dir;
p_fs->hint_uentry.clu.size = clu.size;
p_fs->hint_uentry.clu.flags = clu.flags;
}
} else if (type == TYPE_DELETED) {
num_empty++;
} else {
num_empty = 0;
}
if (num_empty >= num_entries) {
p_fs->hint_uentry.dir = CLUSTER_32(~0);
p_fs->hint_uentry.entry = -1;
return dentry - (num_entries - 1);
}
}
if (p_dir->dir == CLUSTER_32(0))
break; /* FAT16 root_dir */
if (clu.flags == 0x03) {
if ((--clu.size) > 0)
clu.dir++;
else
clu.dir = CLUSTER_32(~0);
} else {
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
return -1;
}
}
return -1;
}
static s32 find_empty_entry(struct inode *inode, struct chain_t *p_dir, s32 num_entries)
{
s32 ret, dentry;
u32 last_clu;
sector_t sector;
u64 size = 0;
struct chain_t clu;
struct dentry_t *ep = NULL;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
return search_deleted_or_unused_entry(sb, p_dir, num_entries);
while ((dentry = search_deleted_or_unused_entry(sb, p_dir, num_entries)) < 0) {
if (p_fs->dev_ejected)
break;
if (p_dir->dir != p_fs->root_dir)
size = i_size_read(inode);
last_clu = find_last_cluster(sb, p_dir);
clu.dir = last_clu + 1;
clu.size = 0;
clu.flags = p_dir->flags;
/* (1) allocate a cluster */
ret = exfat_alloc_cluster(sb, 1, &clu);
if (ret < 1)
return -EIO;
if (clear_cluster(sb, clu.dir) != 0)
return -EIO;
/* (2) append to the FAT chain */
if (clu.flags != p_dir->flags) {
exfat_chain_cont_cluster(sb, p_dir->dir, p_dir->size);
p_dir->flags = 0x01;
p_fs->hint_uentry.clu.flags = 0x01;
}
if (clu.flags == 0x01)
if (exfat_fat_write(sb, last_clu, clu.dir) < 0)
return -EIO;
if (p_fs->hint_uentry.entry == -1) {
p_fs->hint_uentry.dir = p_dir->dir;
p_fs->hint_uentry.entry = p_dir->size << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS);
p_fs->hint_uentry.clu.dir = clu.dir;
p_fs->hint_uentry.clu.size = 0;
p_fs->hint_uentry.clu.flags = clu.flags;
}
p_fs->hint_uentry.clu.size++;
p_dir->size++;
/* (3) update the directory entry */
if (p_dir->dir != p_fs->root_dir) {
size += p_fs->cluster_size;
ep = get_entry_in_dir(sb, &fid->dir,
fid->entry + 1, &sector);
if (!ep)
return -ENOENT;
exfat_set_entry_size(ep, size);
exfat_set_entry_flag(ep, p_dir->flags);
exfat_buf_modify(sb, sector);
update_dir_checksum(sb, &fid->dir,
fid->entry);
}
i_size_write(inode, i_size_read(inode) + p_fs->cluster_size);
EXFAT_I(inode)->mmu_private += p_fs->cluster_size;
EXFAT_I(inode)->fid.size += p_fs->cluster_size;
EXFAT_I(inode)->fid.flags = p_dir->flags;
inode->i_blocks += 1 << (p_fs->cluster_size_bits - 9);
}
return dentry;
}
static s32 extract_uni_name_from_name_entry(struct name_dentry_t *ep, u16 *uniname,
s32 order)
{
int i, len = 0;
for (i = 0; i < 30; i += 2) {
*uniname = GET16_A(ep->unicode_0_14 + i);
if (*uniname == 0x0)
return len;
uniname++;
len++;
}
*uniname = 0x0;
return len;
}
/* return values of exfat_find_dir_entry()
* >= 0 : return dir entiry position with the name in dir
* -1 : (root dir, ".") it is the root dir itself
* -2 : entry with the name does not exist
*/
s32 exfat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
struct uni_name_t *p_uniname, s32 num_entries,
u32 type)
{
int i = 0, dentry = 0, num_ext_entries = 0, len, step;
s32 order = 0;
bool is_feasible_entry = false;
s32 dentries_per_clu, num_empty = 0;
u32 entry_type;
u16 entry_uniname[16], *uniname = NULL, unichar;
struct chain_t clu;
struct dentry_t *ep;
struct file_dentry_t *file_ep;
struct strm_dentry_t *strm_ep;
struct name_dentry_t *name_ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_dir->dir == p_fs->root_dir) {
if ((!nls_uniname_cmp(sb, p_uniname->name,
(u16 *)UNI_CUR_DIR_NAME)) ||
(!nls_uniname_cmp(sb, p_uniname->name,
(u16 *)UNI_PAR_DIR_NAME)))
return -1; // special case, root directory itself
}
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
dentries_per_clu = p_fs->dentries_in_root;
else
dentries_per_clu = p_fs->dentries_per_clu;
clu.dir = p_dir->dir;
clu.size = p_dir->size;
clu.flags = p_dir->flags;
p_fs->hint_uentry.dir = p_dir->dir;
p_fs->hint_uentry.entry = -1;
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
while (i < dentries_per_clu) {
ep = get_entry_in_dir(sb, &clu, i, NULL);
if (!ep)
return -2;
entry_type = exfat_get_entry_type(ep);
step = 1;
if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED)) {
is_feasible_entry = false;
if (p_fs->hint_uentry.entry == -1) {
num_empty++;
if (num_empty == 1) {
p_fs->hint_uentry.clu.dir = clu.dir;
p_fs->hint_uentry.clu.size = clu.size;
p_fs->hint_uentry.clu.flags = clu.flags;
}
if ((num_empty >= num_entries) || (entry_type == TYPE_UNUSED))
p_fs->hint_uentry.entry = dentry - (num_empty - 1);
}
if (entry_type == TYPE_UNUSED)
return -2;
} else {
num_empty = 0;
if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) {
file_ep = (struct file_dentry_t *)ep;
if ((type == TYPE_ALL) || (type == entry_type)) {
num_ext_entries = file_ep->num_ext;
is_feasible_entry = true;
} else {
is_feasible_entry = false;
step = file_ep->num_ext + 1;
}
} else if (entry_type == TYPE_STREAM) {
if (is_feasible_entry) {
strm_ep = (struct strm_dentry_t *)ep;
if (p_uniname->name_hash == GET16_A(strm_ep->name_hash) &&
p_uniname->name_len == strm_ep->name_len) {
order = 1;
} else {
is_feasible_entry = false;
step = num_ext_entries;
}
}
} else if (entry_type == TYPE_EXTEND) {
if (is_feasible_entry) {
name_ep = (struct name_dentry_t *)ep;
if ((++order) == 2)
uniname = p_uniname->name;
else
uniname += 15;
len = extract_uni_name_from_name_entry(name_ep,
entry_uniname, order);
unichar = *(uniname + len);
*(uniname + len) = 0x0;
if (nls_uniname_cmp(sb, uniname, entry_uniname)) {
is_feasible_entry = false;
step = num_ext_entries - order + 1;
} else if (order == num_ext_entries) {
p_fs->hint_uentry.dir = CLUSTER_32(~0);
p_fs->hint_uentry.entry = -1;
return dentry - (num_ext_entries);
}
*(uniname + len) = unichar;
}
} else {
is_feasible_entry = false;
}
}
i += step;
dentry += step;
}
i -= dentries_per_clu;
if (p_dir->dir == CLUSTER_32(0))
break; /* FAT16 root_dir */
if (clu.flags == 0x03) {
if ((--clu.size) > 0)
clu.dir++;
else
clu.dir = CLUSTER_32(~0);
} else {
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
return -2;
}
}
return -2;
}
s32 exfat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
s32 entry, struct dentry_t *p_entry)
{
int i, count = 0;
u32 type;
struct file_dentry_t *file_ep = (struct file_dentry_t *)p_entry;
struct dentry_t *ext_ep;
for (i = 0, entry++; i < file_ep->num_ext; i++, entry++) {
ext_ep = get_entry_in_dir(sb, p_dir, entry, NULL);
if (!ext_ep)
return -1;
type = exfat_get_entry_type(ext_ep);
if ((type == TYPE_EXTEND) || (type == TYPE_STREAM))
count++;
else
return count;
}
return count;
}
s32 count_dir_entries(struct super_block *sb, struct chain_t *p_dir)
{
int i, count = 0;
s32 dentries_per_clu;
u32 entry_type;
struct chain_t clu;
struct dentry_t *ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
dentries_per_clu = p_fs->dentries_in_root;
else
dentries_per_clu = p_fs->dentries_per_clu;
clu.dir = p_dir->dir;
clu.size = p_dir->size;
clu.flags = p_dir->flags;
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
for (i = 0; i < dentries_per_clu; i++) {
ep = get_entry_in_dir(sb, &clu, i, NULL);
if (!ep)
return -ENOENT;
entry_type = exfat_get_entry_type(ep);
if (entry_type == TYPE_UNUSED)
return count;
if (entry_type == TYPE_DIR)
count++;
}
if (p_dir->dir == CLUSTER_32(0))
break; /* FAT16 root_dir */
if (clu.flags == 0x03) {
if ((--clu.size) > 0)
clu.dir++;
else
clu.dir = CLUSTER_32(~0);
} else {
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
return -EIO;
}
}
return count;
}
bool is_dir_empty(struct super_block *sb, struct chain_t *p_dir)
{
int i;
s32 dentries_per_clu;
u32 type;
struct chain_t clu;
struct dentry_t *ep;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
dentries_per_clu = p_fs->dentries_in_root;
else
dentries_per_clu = p_fs->dentries_per_clu;
clu.dir = p_dir->dir;
clu.size = p_dir->size;
clu.flags = p_dir->flags;
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
for (i = 0; i < dentries_per_clu; i++) {
ep = get_entry_in_dir(sb, &clu, i, NULL);
if (!ep)
break;
type = exfat_get_entry_type(ep);
if (type == TYPE_UNUSED)
return true;
if ((type == TYPE_FILE) || (type == TYPE_DIR))
return false;
}
if (p_dir->dir == CLUSTER_32(0))
break; /* FAT16 root_dir */
if (clu.flags == 0x03) {
if ((--clu.size) > 0)
clu.dir++;
else
clu.dir = CLUSTER_32(~0);
}
if (exfat_fat_read(sb, clu.dir, &clu.dir) != 0)
break;
}
return true;
}
/*
* Name Conversion Functions
*/
/* input : dir, uni_name
* output : num_of_entry
*/
s32 get_num_entries(struct super_block *sb, struct chain_t *p_dir,
struct uni_name_t *p_uniname, s32 *entries)
{
s32 num_entries;
num_entries = exfat_calc_num_entries(p_uniname);
if (num_entries == 0)
return -EINVAL;
*entries = num_entries;
return 0;
}
void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u16 *uniname)
{
int i;
struct dentry_t *ep;
struct entry_set_cache_t *es;
es = get_entry_set_in_dir(sb, p_dir, entry, ES_ALL_ENTRIES, &ep);
if (!es || es->num_entries < 3) {
if (es)
release_entry_set(es);
return;
}
ep += 2;
/*
* First entry : file entry
* Second entry : stream-extension entry
* Third entry : first file-name entry
* So, the index of first file-name dentry should start from 2.
*/
for (i = 2; i < es->num_entries; i++, ep++) {
if (exfat_get_entry_type(ep) == TYPE_EXTEND)
extract_uni_name_from_name_entry((struct name_dentry_t *)
ep, uniname, i);
else
goto out;
uniname += 15;
}
out:
release_entry_set(es);
}
s32 exfat_calc_num_entries(struct uni_name_t *p_uniname)
{
s32 len;
len = p_uniname->name_len;
if (len == 0)
return 0;
/* 1 file entry + 1 stream entry + name entries */
return (len - 1) / 15 + 3;
}
u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type)
{
int i;
u8 *c = (u8 *)data;
switch (type) {
case CS_DIR_ENTRY:
for (i = 0; i < len; i++, c++) {
if ((i == 2) || (i == 3))
continue;
chksum = (((chksum & 1) << 15) |
((chksum & 0xFFFE) >> 1)) + (u16)*c;
}
break;
default
:
for (i = 0; i < len; i++, c++)
chksum = (((chksum & 1) << 15) |
((chksum & 0xFFFE) >> 1)) + (u16)*c;
}
return chksum;
}
/*
* Name Resolution Functions
*/
/* return values of resolve_path()
* > 0 : return the length of the path
* < 0 : return error
*/
s32 resolve_path(struct inode *inode, char *path, struct chain_t *p_dir,
struct uni_name_t *p_uniname)
{
bool lossy = false;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
if (strscpy(name_buf, path, sizeof(name_buf)) < 0)
return -EINVAL;
nls_cstring_to_uniname(sb, p_uniname, name_buf, &lossy);
if (lossy)
return -EINVAL;
fid->size = i_size_read(inode);
p_dir->dir = fid->start_clu;
p_dir->size = (s32)(fid->size >> p_fs->cluster_size_bits);
p_dir->flags = fid->flags;
return 0;
}
s32 exfat_mount(struct super_block *sb, struct pbr_sector_t *p_pbr)
{
struct bpbex_t *p_bpb = (struct bpbex_t *)p_pbr->bpb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
if (p_bpb->num_fats == 0)
return -EFSCORRUPTED;
p_fs->sectors_per_clu = 1 << p_bpb->sectors_per_clu_bits;
p_fs->sectors_per_clu_bits = p_bpb->sectors_per_clu_bits;
p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits +
p_bd->sector_size_bits;
p_fs->cluster_size = 1 << p_fs->cluster_size_bits;
p_fs->num_FAT_sectors = GET32(p_bpb->fat_length);
p_fs->FAT1_start_sector = p_fs->PBR_sector + GET32(p_bpb->fat_offset);
if (p_bpb->num_fats == 1)
p_fs->FAT2_start_sector = p_fs->FAT1_start_sector;
else
p_fs->FAT2_start_sector = p_fs->FAT1_start_sector +
p_fs->num_FAT_sectors;
p_fs->root_start_sector = p_fs->PBR_sector + GET32(p_bpb->clu_offset);
p_fs->data_start_sector = p_fs->root_start_sector;
p_fs->num_sectors = GET64(p_bpb->vol_length);
p_fs->num_clusters = GET32(p_bpb->clu_count) + 2;
/* because the cluster index starts with 2 */
p_fs->vol_id = GET32(p_bpb->vol_serial);
p_fs->root_dir = GET32(p_bpb->root_cluster);
p_fs->dentries_in_root = 0;
p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits -
DENTRY_SIZE_BITS);
p_fs->vol_flag = (u32)GET16(p_bpb->vol_flags);
p_fs->clu_srch_ptr = 2;
p_fs->used_clusters = UINT_MAX;
return 0;
}
s32 create_dir(struct inode *inode, struct chain_t *p_dir,
struct uni_name_t *p_uniname, struct file_id_t *fid)
{
s32 ret, dentry, num_entries;
u64 size;
struct chain_t clu;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
ret = get_num_entries(sb, p_dir, p_uniname, &num_entries);
if (ret)
return ret;
/* find_empty_entry must be called before alloc_cluster */
dentry = find_empty_entry(inode, p_dir, num_entries);
if (dentry < 0)
return -ENOSPC;
clu.dir = CLUSTER_32(~0);
clu.size = 0;
clu.flags = 0x03;
/* (1) allocate a cluster */
ret = exfat_alloc_cluster(sb, 1, &clu);
if (ret < 0)
return ret;
else if (ret == 0)
return -ENOSPC;
ret = clear_cluster(sb, clu.dir);
if (ret != 0)
return ret;
size = p_fs->cluster_size;
/* (2) update the directory entry */
/* make sub-dir entry in parent directory */
ret = exfat_init_dir_entry(sb, p_dir, dentry, TYPE_DIR, clu.dir,
size);
if (ret != 0)
return ret;
ret = exfat_init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname);
if (ret != 0)
return ret;
fid->dir.dir = p_dir->dir;
fid->dir.size = p_dir->size;
fid->dir.flags = p_dir->flags;
fid->entry = dentry;
fid->attr = ATTR_SUBDIR;
fid->flags = 0x03;
fid->size = size;
fid->start_clu = clu.dir;
fid->type = TYPE_DIR;
fid->rwoffset = 0;
fid->hint_last_off = -1;
return 0;
}
s32 create_file(struct inode *inode, struct chain_t *p_dir,
struct uni_name_t *p_uniname, struct file_id_t *fid)
{
s32 ret, dentry, num_entries;
struct super_block *sb = inode->i_sb;
ret = get_num_entries(sb, p_dir, p_uniname, &num_entries);
if (ret)
return ret;
/* find_empty_entry must be called before alloc_cluster() */
dentry = find_empty_entry(inode, p_dir, num_entries);
if (dentry < 0)
return -ENOSPC;
/* (1) update the directory entry */
/* fill the directory entry information of the created file.
* the first cluster is not determined yet. (0)
*/
ret = exfat_init_dir_entry(sb, p_dir, dentry, TYPE_FILE,
CLUSTER_32(0), 0);
if (ret != 0)
return ret;
ret = exfat_init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname);
if (ret != 0)
return ret;
fid->dir.dir = p_dir->dir;
fid->dir.size = p_dir->size;
fid->dir.flags = p_dir->flags;
fid->entry = dentry;
fid->attr = ATTR_ARCHIVE;
fid->flags = 0x03;
fid->size = 0;
fid->start_clu = CLUSTER_32(~0);
fid->type = TYPE_FILE;
fid->rwoffset = 0;
fid->hint_last_off = -1;
return 0;
}
void remove_file(struct inode *inode, struct chain_t *p_dir, s32 entry)
{
s32 num_entries;
sector_t sector;
struct dentry_t *ep;
struct super_block *sb = inode->i_sb;
ep = get_entry_in_dir(sb, p_dir, entry, &sector);
if (!ep)
return;
exfat_buf_lock(sb, sector);
/* exfat_buf_lock() before call count_ext_entries() */
num_entries = exfat_count_ext_entries(sb, p_dir, entry, ep);
if (num_entries < 0) {
exfat_buf_unlock(sb, sector);
return;
}
num_entries++;
exfat_buf_unlock(sb, sector);
/* (1) update the directory entry */
exfat_delete_dir_entry(sb, p_dir, entry, 0, num_entries);
}
s32 exfat_rename_file(struct inode *inode, struct chain_t *p_dir, s32 oldentry,
struct uni_name_t *p_uniname, struct file_id_t *fid)
{
s32 ret, newentry = -1, num_old_entries, num_new_entries;
sector_t sector_old, sector_new;
struct dentry_t *epold, *epnew;
struct super_block *sb = inode->i_sb;
epold = get_entry_in_dir(sb, p_dir, oldentry, &sector_old);
if (!epold)
return -ENOENT;
exfat_buf_lock(sb, sector_old);
/* exfat_buf_lock() before call count_ext_entries() */
num_old_entries = exfat_count_ext_entries(sb, p_dir, oldentry,
epold);
if (num_old_entries < 0) {
exfat_buf_unlock(sb, sector_old);
return -ENOENT;
}
num_old_entries++;
ret = get_num_entries(sb, p_dir, p_uniname, &num_new_entries);
if (ret) {
exfat_buf_unlock(sb, sector_old);
return ret;
}
if (num_old_entries < num_new_entries) {
newentry = find_empty_entry(inode, p_dir, num_new_entries);
if (newentry < 0) {
exfat_buf_unlock(sb, sector_old);
return -ENOSPC;
}
epnew = get_entry_in_dir(sb, p_dir, newentry, &sector_new);
if (!epnew) {
exfat_buf_unlock(sb, sector_old);
return -ENOENT;
}
*epnew = *epold;
if (fid->type == TYPE_FILE) {
fid->attr |= ATTR_ARCHIVE;
exfat_set_entry_attr(epnew, fid->attr);
}
exfat_buf_modify(sb, sector_new);
exfat_buf_unlock(sb, sector_old);
epold = get_entry_in_dir(sb, p_dir, oldentry + 1,
&sector_old);
exfat_buf_lock(sb, sector_old);
epnew = get_entry_in_dir(sb, p_dir, newentry + 1,
&sector_new);
if (!epold || !epnew) {
exfat_buf_unlock(sb, sector_old);
return -ENOENT;
}
*epnew = *epold;
exfat_buf_modify(sb, sector_new);
exfat_buf_unlock(sb, sector_old);
ret = exfat_init_ext_entry(sb, p_dir, newentry,
num_new_entries, p_uniname);
if (ret != 0)
return ret;
exfat_delete_dir_entry(sb, p_dir, oldentry, 0,
num_old_entries);
fid->entry = newentry;
} else {
if (fid->type == TYPE_FILE) {
fid->attr |= ATTR_ARCHIVE;
exfat_set_entry_attr(epold, fid->attr);
}
exfat_buf_modify(sb, sector_old);
exfat_buf_unlock(sb, sector_old);
ret = exfat_init_ext_entry(sb, p_dir, oldentry,
num_new_entries, p_uniname);
if (ret != 0)
return ret;
exfat_delete_dir_entry(sb, p_dir, oldentry, num_new_entries,
num_old_entries);
}
return 0;
}
s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
struct chain_t *p_newdir, struct uni_name_t *p_uniname,
struct file_id_t *fid)
{
s32 ret, newentry, num_new_entries, num_old_entries;
sector_t sector_mov, sector_new;
struct dentry_t *epmov, *epnew;
struct super_block *sb = inode->i_sb;
epmov = get_entry_in_dir(sb, p_olddir, oldentry, &sector_mov);
if (!epmov)
return -ENOENT;
/* check if the source and target directory is the same */
if (exfat_get_entry_type(epmov) == TYPE_DIR &&
exfat_get_entry_clu0(epmov) == p_newdir->dir)
return -EINVAL;
exfat_buf_lock(sb, sector_mov);
/* exfat_buf_lock() before call count_ext_entries() */
num_old_entries = exfat_count_ext_entries(sb, p_olddir, oldentry,
epmov);
if (num_old_entries < 0) {
exfat_buf_unlock(sb, sector_mov);
return -ENOENT;
}
num_old_entries++;
ret = get_num_entries(sb, p_newdir, p_uniname, &num_new_entries);
if (ret) {
exfat_buf_unlock(sb, sector_mov);
return ret;
}
newentry = find_empty_entry(inode, p_newdir, num_new_entries);
if (newentry < 0) {
exfat_buf_unlock(sb, sector_mov);
return -ENOSPC;
}
epnew = get_entry_in_dir(sb, p_newdir, newentry, &sector_new);
if (!epnew) {
exfat_buf_unlock(sb, sector_mov);
return -ENOENT;
}
*epnew = *epmov;
if (fid->type == TYPE_FILE) {
fid->attr |= ATTR_ARCHIVE;
exfat_set_entry_attr(epnew, fid->attr);
}
exfat_buf_modify(sb, sector_new);
exfat_buf_unlock(sb, sector_mov);
epmov = get_entry_in_dir(sb, p_olddir, oldentry + 1,
&sector_mov);
exfat_buf_lock(sb, sector_mov);
epnew = get_entry_in_dir(sb, p_newdir, newentry + 1,
&sector_new);
if (!epmov || !epnew) {
exfat_buf_unlock(sb, sector_mov);
return -ENOENT;
}
*epnew = *epmov;
exfat_buf_modify(sb, sector_new);
exfat_buf_unlock(sb, sector_mov);
ret = exfat_init_ext_entry(sb, p_newdir, newentry, num_new_entries,
p_uniname);
if (ret != 0)
return ret;
exfat_delete_dir_entry(sb, p_olddir, oldentry, 0, num_old_entries);
fid->dir.dir = p_newdir->dir;
fid->dir.size = p_newdir->size;
fid->dir.flags = p_newdir->flags;
fid->entry = newentry;
return 0;
}
/*
* Sector Read/Write Functions
*/
int sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh,
bool read)
{
s32 ret = -EIO;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if ((sec >= (p_fs->PBR_sector + p_fs->num_sectors)) &&
(p_fs->num_sectors > 0)) {
pr_err("[EXFAT] %s: out of range error! (sec = %llu)\n",
__func__, (unsigned long long)sec);
fs_error(sb);
return ret;
}
if (!p_fs->dev_ejected) {
ret = exfat_bdev_read(sb, sec, bh, 1, read);
if (ret != 0)
p_fs->dev_ejected = 1;
}
return ret;
}
int sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh,
bool sync)
{
s32 ret = -EIO;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (sec >= (p_fs->PBR_sector + p_fs->num_sectors) &&
(p_fs->num_sectors > 0)) {
pr_err("[EXFAT] %s: out of range error! (sec = %llu)\n",
__func__, (unsigned long long)sec);
fs_error(sb);
return ret;
}
if (!bh) {
pr_err("[EXFAT] %s: bh is NULL!\n", __func__);
fs_error(sb);
return ret;
}
if (!p_fs->dev_ejected) {
ret = exfat_bdev_write(sb, sec, bh, 1, sync);
if (ret != 0)
p_fs->dev_ejected = 1;
}
return ret;
}
int multi_sector_read(struct super_block *sb, sector_t sec,
struct buffer_head **bh, s32 num_secs, bool read)
{
s32 ret = -EIO;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors)) &&
(p_fs->num_sectors > 0)) {
pr_err("[EXFAT] %s: out of range error! (sec = %llu, num_secs = %d)\n",
__func__, (unsigned long long)sec, num_secs);
fs_error(sb);
return ret;
}
if (!p_fs->dev_ejected) {
ret = exfat_bdev_read(sb, sec, bh, num_secs, read);
if (ret != 0)
p_fs->dev_ejected = 1;
}
return ret;
}
int multi_sector_write(struct super_block *sb, sector_t sec,
struct buffer_head *bh, s32 num_secs, bool sync)
{
s32 ret = -EIO;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if ((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors) &&
(p_fs->num_sectors > 0)) {
pr_err("[EXFAT] %s: out of range error! (sec = %llu, num_secs = %d)\n",
__func__, (unsigned long long)sec, num_secs);
fs_error(sb);
return ret;
}
if (!bh) {
pr_err("[EXFAT] %s: bh is NULL!\n", __func__);
fs_error(sb);
return ret;
}
if (!p_fs->dev_ejected) {
ret = exfat_bdev_write(sb, sec, bh, num_secs, sync);
if (ret != 0)
p_fs->dev_ejected = 1;
}
return ret;
}
drivers/staging/exfat/exfat_nls.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/string.h>
#include <linux/nls.h>
#include "exfat.h"
static u16 bad_uni_chars[] = {
/* " * / : < > ? \ | */
0x0022, 0x002A, 0x002F, 0x003A,
0x003C, 0x003E, 0x003F, 0x005C, 0x007C,
0
};
static int convert_ch_to_uni(struct nls_table *nls, u16 *uni, u8 *ch,
bool *lossy)
{
int len;
*uni = 0x0;
if (ch[0] < 0x80) {
*uni = (u16)ch[0];
return 1;
}
len = nls->char2uni(ch, NLS_MAX_CHARSET_SIZE, uni);
if (len < 0) {
/* conversion failed */
pr_info("%s: fail to use nls\n", __func__);
if (lossy)
*lossy = true;
*uni = (u16)'_';
if (!strcmp(nls->charset, "utf8"))
return 1;
else
return 2;
}
return len;
}
static int convert_uni_to_ch(struct nls_table *nls, u8 *ch, u16 uni,
bool *lossy)
{
int len;
ch[0] = 0x0;
if (uni < 0x0080) {
ch[0] = (u8)uni;
return 1;
}
len = nls->uni2char(uni, ch, NLS_MAX_CHARSET_SIZE);
if (len < 0) {
/* conversion failed */
pr_info("%s: fail to use nls\n", __func__);
if (lossy)
*lossy = true;
ch[0] = '_';
return 1;
}
return len;
}
u16 nls_upper(struct super_block *sb, u16 a)
{
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (EXFAT_SB(sb)->options.casesensitive)
return a;
if (p_fs->vol_utbl && p_fs->vol_utbl[get_col_index(a)])
return p_fs->vol_utbl[get_col_index(a)][get_row_index(a)];
else
return a;
}
static u16 *nls_wstrchr(u16 *str, u16 wchar)
{
while (*str) {
if (*(str++) == wchar)
return str;
}
return NULL;
}
int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b)
{
int i;
for (i = 0; i < MAX_NAME_LENGTH; i++, a++, b++) {
if (nls_upper(sb, *a) != nls_upper(sb, *b))
return 1;
if (*a == 0x0)
return 0;
}
return 0;
}
void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
struct uni_name_t *p_uniname)
{
int i, j, len;
u8 buf[MAX_CHARSET_SIZE];
u16 *uniname = p_uniname->name;
struct nls_table *nls = EXFAT_SB(sb)->nls_io;
if (!nls) {
len = utf16s_to_utf8s(uniname, MAX_NAME_LENGTH,
UTF16_HOST_ENDIAN, p_cstring,
MAX_NAME_LENGTH);
p_cstring[len] = 0;
return;
}
i = 0;
while (i < (MAX_NAME_LENGTH - 1)) {
if (*uniname == (u16)'\0')
break;
len = convert_uni_to_ch(nls, buf, *uniname, NULL);
if (len > 1) {
for (j = 0; j < len; j++)
*p_cstring++ = (char)*(buf + j);
} else { /* len == 1 */
*p_cstring++ = (char)*buf;
}
uniname++;
i++;
}
*p_cstring = '\0';
}
void nls_cstring_to_uniname(struct super_block *sb,
struct uni_name_t *p_uniname, u8 *p_cstring,
bool *p_lossy)
{
int i, j;
bool lossy = false;
u8 *end_of_name;
u8 upname[MAX_NAME_LENGTH * 2];
u16 *uniname = p_uniname->name;
struct nls_table *nls = EXFAT_SB(sb)->nls_io;
/* strip all trailing spaces */
end_of_name = p_cstring + strlen(p_cstring);
while (*(--end_of_name) == ' ') {
if (end_of_name < p_cstring)
break;
}
*(++end_of_name) = '\0';
if (strcmp(p_cstring, ".") && strcmp(p_cstring, "..")) {
/* strip all trailing periods */
while (*(--end_of_name) == '.') {
if (end_of_name < p_cstring)
break;
}
*(++end_of_name) = '\0';
}
if (*p_cstring == '\0')
lossy = true;
if (!nls) {
i = utf8s_to_utf16s(p_cstring, MAX_NAME_LENGTH,
UTF16_HOST_ENDIAN, uniname,
MAX_NAME_LENGTH);
for (j = 0; j < i; j++)
SET16_A(upname + j * 2, nls_upper(sb, uniname[j]));
uniname[i] = '\0';
} else {
i = 0;
j = 0;
while (j < (MAX_NAME_LENGTH - 1)) {
if (*(p_cstring + i) == '\0')
break;
i += convert_ch_to_uni(nls, uniname,
(u8 *)(p_cstring + i), &lossy);
if ((*uniname < 0x0020) ||
nls_wstrchr(bad_uni_chars, *uniname))
lossy = true;
SET16_A(upname + j * 2, nls_upper(sb, *uniname));
uniname++;
j++;
}
if (*(p_cstring + i) != '\0')
lossy = true;
*uniname = (u16)'\0';
}
p_uniname->name_len = j;
p_uniname->name_hash = calc_checksum_2byte(upname, j << 1, 0,
CS_DEFAULT);
if (p_lossy)
*p_lossy = lossy;
}
drivers/staging/exfat/exfat_super.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/seq_file.h>
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/buffer_head.h>
#include <linux/exportfs.h>
#include <linux/mount.h>
#include <linux/vfs.h>
#include <linux/aio.h>
#include <linux/iversion.h>
#include <linux/parser.h>
#include <linux/uio.h>
#include <linux/writeback.h>
#include <linux/log2.h>
#include <linux/hash.h>
#include <linux/backing-dev.h>
#include <linux/sched.h>
#include <linux/fs_struct.h>
#include <linux/namei.h>
#include <linux/random.h>
#include <linux/string.h>
#include <linux/nls.h>
#include <linux/mutex.h>
#include <linux/swap.h>
#define EXFAT_VERSION "1.3.0"
#include "exfat.h"
static struct kmem_cache *exfat_inode_cachep;
static int exfat_default_codepage = CONFIG_STAGING_EXFAT_DEFAULT_CODEPAGE;
static char exfat_default_iocharset[] = CONFIG_STAGING_EXFAT_DEFAULT_IOCHARSET;
#define INC_IVERSION(x) (inode_inc_iversion(x))
#define GET_IVERSION(x) (inode_peek_iversion_raw(x))
#define SET_IVERSION(x, y) (inode_set_iversion(x, y))
static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos);
static int exfat_sync_inode(struct inode *inode);
static struct inode *exfat_build_inode(struct super_block *sb,
struct file_id_t *fid, loff_t i_pos);
static int exfat_write_inode(struct inode *inode,
struct writeback_control *wbc);
static void exfat_write_super(struct super_block *sb);
#define UNIX_SECS_1980 315532800L
#define UNIX_SECS_2108 4354819200L
/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
static void exfat_time_fat2unix(struct timespec64 *ts, struct date_time_t *tp)
{
ts->tv_sec = mktime64(tp->year + 1980, tp->month + 1, tp->day,
tp->hour, tp->minute, tp->second);
ts->tv_nsec = tp->millisecond * NSEC_PER_MSEC;
}
/* Convert linear UNIX date to a FAT time/date pair. */
static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
{
time64_t second = ts->tv_sec;
struct tm tm;
time64_to_tm(second, 0, &tm);
if (second < UNIX_SECS_1980) {
tp->millisecond = 0;
tp->second = 0;
tp->minute = 0;
tp->hour = 0;
tp->day = 1;
tp->month = 1;
tp->year = 0;
return;
}
if (second >= UNIX_SECS_2108) {
tp->millisecond = 999;
tp->second = 59;
tp->minute = 59;
tp->hour = 23;
tp->day = 31;
tp->month = 12;
tp->year = 127;
return;
}
tp->millisecond = ts->tv_nsec / NSEC_PER_MSEC;
tp->second = tm.tm_sec;
tp->minute = tm.tm_min;
tp->hour = tm.tm_hour;
tp->day = tm.tm_mday;
tp->month = tm.tm_mon + 1;
tp->year = tm.tm_year + 1900 - 1980;
}
struct timestamp_t *tm_current(struct timestamp_t *tp)
{
time64_t second = ktime_get_real_seconds();
struct tm tm;
time64_to_tm(second, 0, &tm);
if (second < UNIX_SECS_1980) {
tp->sec = 0;
tp->min = 0;
tp->hour = 0;
tp->day = 1;
tp->mon = 1;
tp->year = 0;
return tp;
}
if (second >= UNIX_SECS_2108) {
tp->sec = 59;
tp->min = 59;
tp->hour = 23;
tp->day = 31;
tp->mon = 12;
tp->year = 127;
return tp;
}
tp->sec = tm.tm_sec;
tp->min = tm.tm_min;
tp->hour = tm.tm_hour;
tp->day = tm.tm_mday;
tp->mon = tm.tm_mon + 1;
tp->year = tm.tm_year + 1900 - 1980;
return tp;
}
static void __lock_super(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
mutex_lock(&sbi->s_lock);
}
static void __unlock_super(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
mutex_unlock(&sbi->s_lock);
}
static int __is_sb_dirty(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
return sbi->s_dirt;
}
static void __set_sb_clean(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
sbi->s_dirt = 0;
}
static int __exfat_revalidate(struct dentry *dentry)
{
return 0;
}
static int exfat_revalidate(struct dentry *dentry, unsigned int flags)
{
if (flags & LOOKUP_RCU)
return -ECHILD;
if (dentry->d_inode)
return 1;
return __exfat_revalidate(dentry);
}
static int exfat_revalidate_ci(struct dentry *dentry, unsigned int flags)
{
if (flags & LOOKUP_RCU)
return -ECHILD;
if (dentry->d_inode)
return 1;
if (!flags)
return 0;
if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
return 0;
return __exfat_revalidate(dentry);
}
static unsigned int __exfat_striptail_len(unsigned int len, const char *name)
{
while (len && name[len - 1] == '.')
len--;
return len;
}
static unsigned int exfat_striptail_len(const struct qstr *qstr)
{
return __exfat_striptail_len(qstr->len, qstr->name);
}
static int exfat_d_hash(const struct dentry *dentry, struct qstr *qstr)
{
qstr->hash = full_name_hash(dentry, qstr->name,
exfat_striptail_len(qstr));
return 0;
}
static int exfat_d_hashi(const struct dentry *dentry, struct qstr *qstr)
{
struct super_block *sb = dentry->d_sb;
const unsigned char *name;
unsigned int len;
unsigned long hash;
name = qstr->name;
len = exfat_striptail_len(qstr);
hash = init_name_hash(dentry);
while (len--)
hash = partial_name_hash(nls_upper(sb, *name++), hash);
qstr->hash = end_name_hash(hash);
return 0;
}
static int exfat_cmpi(const struct dentry *dentry, unsigned int len,
const char *str, const struct qstr *name)
{
struct nls_table *t = EXFAT_SB(dentry->d_sb)->nls_io;
unsigned int alen, blen;
alen = exfat_striptail_len(name);
blen = __exfat_striptail_len(len, str);
if (alen == blen) {
if (!t) {
if (strncasecmp(name->name, str, alen) == 0)
return 0;
} else {
if (nls_strnicmp(t, name->name, str, alen) == 0)
return 0;
}
}
return 1;
}
static int exfat_cmp(const struct dentry *dentry, unsigned int len,
const char *str, const struct qstr *name)
{
unsigned int alen, blen;
alen = exfat_striptail_len(name);
blen = __exfat_striptail_len(len, str);
if (alen == blen) {
if (strncmp(name->name, str, alen) == 0)
return 0;
}
return 1;
}
static const struct dentry_operations exfat_ci_dentry_ops = {
.d_revalidate = exfat_revalidate_ci,
.d_hash = exfat_d_hashi,
.d_compare = exfat_cmpi,
};
static const struct dentry_operations exfat_dentry_ops = {
.d_revalidate = exfat_revalidate,
.d_hash = exfat_d_hash,
.d_compare = exfat_cmp,
};
static DEFINE_MUTEX(z_mutex);
static inline void fs_sync(struct super_block *sb, bool do_sync)
{
if (do_sync)
exfat_bdev_sync(sb);
}
/*
* If ->i_mode can't hold S_IWUGO (i.e. ATTR_RO), we use ->i_attrs to
* save ATTR_RO instead of ->i_mode.
*
* If it's directory and !sbi->options.rodir, ATTR_RO isn't read-only
* bit, it's just used as flag for app.
*/
static inline int exfat_mode_can_hold_ro(struct inode *inode)
{
struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
if (S_ISDIR(inode->i_mode))
return 0;
if ((~sbi->options.fs_fmask) & 0222)
return 1;
return 0;
}
/* Convert attribute bits and a mask to the UNIX mode. */
static inline mode_t exfat_make_mode(struct exfat_sb_info *sbi, u32 attr,
mode_t mode)
{
if ((attr & ATTR_READONLY) && !(attr & ATTR_SUBDIR))
mode &= ~0222;
if (attr & ATTR_SUBDIR)
return (mode & ~sbi->options.fs_dmask) | S_IFDIR;
else
return (mode & ~sbi->options.fs_fmask) | S_IFREG;
}
/* Return the FAT attribute byte for this inode */
static inline u32 exfat_make_attr(struct inode *inode)
{
if (exfat_mode_can_hold_ro(inode) && !(inode->i_mode & 0222))
return (EXFAT_I(inode)->fid.attr) | ATTR_READONLY;
else
return EXFAT_I(inode)->fid.attr;
}
static inline void exfat_save_attr(struct inode *inode, u32 attr)
{
if (exfat_mode_can_hold_ro(inode))
EXFAT_I(inode)->fid.attr = attr & ATTR_RWMASK;
else
EXFAT_I(inode)->fid.attr = attr & (ATTR_RWMASK | ATTR_READONLY);
}
static int ffsMountVol(struct super_block *sb)
{
int i, ret;
struct pbr_sector_t *p_pbr;
struct buffer_head *tmp_bh = NULL;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
pr_info("[EXFAT] trying to mount...\n");
mutex_lock(&z_mutex);
exfat_buf_init(sb);
mutex_init(&p_fs->v_mutex);
p_fs->dev_ejected = 0;
/* open the block device */
exfat_bdev_open(sb);
if (p_bd->sector_size < sb->s_blocksize) {
pr_info("EXFAT: mount failed - sector size %d less than blocksize %ld\n",
p_bd->sector_size, sb->s_blocksize);
ret = -EINVAL;
goto out;
}
if (p_bd->sector_size > sb->s_blocksize)
sb_set_blocksize(sb, p_bd->sector_size);
/* read Sector 0 */
if (sector_read(sb, 0, &tmp_bh, 1) != 0) {
ret = -EIO;
goto out;
}
p_fs->PBR_sector = 0;
p_pbr = (struct pbr_sector_t *)tmp_bh->b_data;
/* check the validity of PBR */
if (GET16_A(p_pbr->signature) != PBR_SIGNATURE) {
brelse(tmp_bh);
exfat_bdev_close(sb);
ret = -EFSCORRUPTED;
goto out;
}
/* fill fs_struct */
for (i = 0; i < 53; i++)
if (p_pbr->bpb[i])
break;
if (i < 53) {
/* Not sure how we'd get here, but complain if it does */
ret = -EINVAL;
pr_info("EXFAT: Attempted to mount VFAT filesystem\n");
goto out;
} else {
ret = exfat_mount(sb, p_pbr);
}
brelse(tmp_bh);
if (ret) {
exfat_bdev_close(sb);
goto out;
}
ret = load_alloc_bitmap(sb);
if (ret) {
exfat_bdev_close(sb);
goto out;
}
ret = load_upcase_table(sb);
if (ret) {
free_alloc_bitmap(sb);
exfat_bdev_close(sb);
goto out;
}
if (p_fs->dev_ejected) {
free_upcase_table(sb);
free_alloc_bitmap(sb);
exfat_bdev_close(sb);
ret = -EIO;
goto out;
}
pr_info("[EXFAT] mounted successfully\n");
out:
mutex_unlock(&z_mutex);
return ret;
}
static int ffsUmountVol(struct super_block *sb)
{
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
int err = 0;
pr_info("[EXFAT] trying to unmount...\n");
mutex_lock(&z_mutex);
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
free_upcase_table(sb);
free_alloc_bitmap(sb);
exfat_fat_release_all(sb);
exfat_buf_release_all(sb);
/* close the block device */
exfat_bdev_close(sb);
if (p_fs->dev_ejected) {
pr_info("[EXFAT] unmounted with media errors. Device is already ejected.\n");
err = -EIO;
}
exfat_buf_shutdown(sb);
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
mutex_unlock(&z_mutex);
pr_info("[EXFAT] unmounted successfully\n");
return err;
}
static int ffsGetVolInfo(struct super_block *sb, struct vol_info_t *info)
{
int err = 0;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of pointer parameters */
if (!info)
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
if (p_fs->used_clusters == UINT_MAX)
p_fs->used_clusters = exfat_count_used_clusters(sb);
info->FatType = EXFAT;
info->ClusterSize = p_fs->cluster_size;
info->NumClusters = p_fs->num_clusters - 2; /* clu 0 & 1 */
info->UsedClusters = p_fs->used_clusters;
info->FreeClusters = info->NumClusters - info->UsedClusters;
if (p_fs->dev_ejected)
err = -EIO;
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return err;
}
static int ffsSyncVol(struct super_block *sb, bool do_sync)
{
int err = 0;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
/* synchronize the file system */
fs_sync(sb, do_sync);
fs_set_vol_flags(sb, VOL_CLEAN);
if (p_fs->dev_ejected)
err = -EIO;
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return err;
}
/*----------------------------------------------------------------------*/
/* File Operation Functions */
/*----------------------------------------------------------------------*/
static int ffsLookupFile(struct inode *inode, char *path, struct file_id_t *fid)
{
int ret, dentry, num_entries;
struct chain_t dir;
struct uni_name_t uni_name;
struct dentry_t *ep, *ep2;
struct entry_set_cache_t *es = NULL;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
pr_debug("%s entered\n", __func__);
/* check the validity of pointer parameters */
if (!fid || !path || (*path == '\0'))
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
/* check the validity of directory name in the given pathname */
ret = resolve_path(inode, path, &dir, &uni_name);
if (ret)
goto out;
ret = get_num_entries(sb, &dir, &uni_name, &num_entries);
if (ret)
goto out;
/* search the file name for directories */
dentry = exfat_find_dir_entry(sb, &dir, &uni_name, num_entries,
TYPE_ALL);
if (dentry < -1) {
ret = -ENOENT;
goto out;
}
fid->dir.dir = dir.dir;
fid->dir.size = dir.size;
fid->dir.flags = dir.flags;
fid->entry = dentry;
if (dentry == -1) {
fid->type = TYPE_DIR;
fid->rwoffset = 0;
fid->hint_last_off = -1;
fid->attr = ATTR_SUBDIR;
fid->flags = 0x01;
fid->size = 0;
fid->start_clu = p_fs->root_dir;
} else {
es = get_entry_set_in_dir(sb, &dir, dentry,
ES_2_ENTRIES, &ep);
if (!es) {
ret = -ENOENT;
goto out;
}
ep2 = ep + 1;
fid->type = exfat_get_entry_type(ep);
fid->rwoffset = 0;
fid->hint_last_off = -1;
fid->attr = exfat_get_entry_attr(ep);
fid->size = exfat_get_entry_size(ep2);
if ((fid->type == TYPE_FILE) && (fid->size == 0)) {
fid->flags = 0x03;
fid->start_clu = CLUSTER_32(~0);
} else {
fid->flags = exfat_get_entry_flag(ep2);
fid->start_clu = exfat_get_entry_clu0(ep2);
}
release_entry_set(es);
}
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsCreateFile(struct inode *inode, char *path, struct file_id_t *fid)
{
struct chain_t dir;
struct uni_name_t uni_name;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
int ret = 0;
/* check the validity of pointer parameters */
if (!fid || !path || (*path == '\0'))
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
/* check the validity of directory name in the given pathname */
ret = resolve_path(inode, path, &dir, &uni_name);
if (ret)
goto out;
fs_set_vol_flags(sb, VOL_DIRTY);
/* create a new file */
ret = create_file(inode, &dir, &uni_name, fid);
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsTruncateFile(struct inode *inode, u64 old_size, u64 new_size)
{
s32 num_clusters;
u32 last_clu = CLUSTER_32(0);
int ret = 0;
struct chain_t clu;
struct timestamp_t tm;
struct dentry_t *ep, *ep2;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
struct entry_set_cache_t *es = NULL;
pr_debug("%s entered (inode %p size %llu)\n", __func__, inode,
new_size);
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
/* check if the given file ID is opened */
if (fid->type != TYPE_FILE) {
ret = -EPERM;
goto out;
}
if (fid->size != old_size) {
pr_err("[EXFAT] truncate : can't skip it because of size-mismatch(old:%lld->fid:%lld).\n",
old_size, fid->size);
}
if (old_size <= new_size) {
ret = 0;
goto out;
}
fs_set_vol_flags(sb, VOL_DIRTY);
clu.dir = fid->start_clu;
clu.size = (s32)((old_size - 1) >> p_fs->cluster_size_bits) + 1;
clu.flags = fid->flags;
if (new_size > 0) {
num_clusters = (s32)((new_size - 1) >>
p_fs->cluster_size_bits) + 1;
if (clu.flags == 0x03) {
clu.dir += num_clusters;
} else {
while (num_clusters > 0) {
last_clu = clu.dir;
if (exfat_fat_read(sb, clu.dir, &clu.dir) == -1) {
ret = -EIO;
goto out;
}
num_clusters--;
}
}
clu.size -= num_clusters;
}
fid->size = new_size;
fid->attr |= ATTR_ARCHIVE;
if (new_size == 0) {
fid->flags = 0x03;
fid->start_clu = CLUSTER_32(~0);
}
/* (1) update the directory entry */
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_ALL_ENTRIES, &ep);
if (!es) {
ret = -ENOENT;
goto out;
}
ep2 = ep + 1;
exfat_set_entry_time(ep, tm_current(&tm), TM_MODIFY);
exfat_set_entry_attr(ep, fid->attr);
exfat_set_entry_size(ep2, new_size);
if (new_size == 0) {
exfat_set_entry_flag(ep2, 0x01);
exfat_set_entry_clu0(ep2, CLUSTER_32(0));
}
update_dir_checksum_with_entry_set(sb, es);
release_entry_set(es);
/* (2) cut off from the FAT chain */
if (last_clu != CLUSTER_32(0)) {
if (fid->flags == 0x01)
exfat_fat_write(sb, last_clu, CLUSTER_32(~0));
}
/* (3) free the clusters */
exfat_free_cluster(sb, &clu, 0);
/* hint information */
fid->hint_last_off = -1;
if (fid->rwoffset > fid->size)
fid->rwoffset = fid->size;
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out:
pr_debug("%s exited (%d)\n", __func__, ret);
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static void update_parent_info(struct file_id_t *fid,
struct inode *parent_inode)
{
struct fs_info_t *p_fs = &(EXFAT_SB(parent_inode->i_sb)->fs_info);
struct file_id_t *parent_fid = &(EXFAT_I(parent_inode)->fid);
if (unlikely((parent_fid->flags != fid->dir.flags) ||
(parent_fid->size !=
(fid->dir.size << p_fs->cluster_size_bits)) ||
(parent_fid->start_clu != fid->dir.dir))) {
fid->dir.dir = parent_fid->start_clu;
fid->dir.flags = parent_fid->flags;
fid->dir.size = ((parent_fid->size + (p_fs->cluster_size - 1))
>> p_fs->cluster_size_bits);
}
}
static int ffsMoveFile(struct inode *old_parent_inode, struct file_id_t *fid,
struct inode *new_parent_inode, struct dentry *new_dentry)
{
s32 ret;
s32 dentry;
struct chain_t olddir, newdir;
struct chain_t *p_dir = NULL;
struct uni_name_t uni_name;
struct dentry_t *ep;
struct super_block *sb = old_parent_inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
u8 *new_path = (u8 *)new_dentry->d_name.name;
struct inode *new_inode = new_dentry->d_inode;
int num_entries;
struct file_id_t *new_fid = NULL;
s32 new_entry = 0;
/* check the validity of the given file id */
if (!fid)
return -EINVAL;
/* check the validity of pointer parameters */
if (!new_path || (*new_path == '\0'))
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
update_parent_info(fid, old_parent_inode);
olddir.dir = fid->dir.dir;
olddir.size = fid->dir.size;
olddir.flags = fid->dir.flags;
dentry = fid->entry;
ep = get_entry_in_dir(sb, &olddir, dentry, NULL);
if (!ep) {
ret = -ENOENT;
goto out2;
}
if (exfat_get_entry_attr(ep) & ATTR_READONLY) {
ret = -EPERM;
goto out2;
}
/* check whether new dir is existing directory and empty */
if (new_inode) {
u32 entry_type;
ret = -ENOENT;
new_fid = &EXFAT_I(new_inode)->fid;
update_parent_info(new_fid, new_parent_inode);
p_dir = &new_fid->dir;
new_entry = new_fid->entry;
ep = get_entry_in_dir(sb, p_dir, new_entry, NULL);
if (!ep)
goto out;
entry_type = exfat_get_entry_type(ep);
if (entry_type == TYPE_DIR) {
struct chain_t new_clu;
new_clu.dir = new_fid->start_clu;
new_clu.size = (s32)((new_fid->size - 1) >>
p_fs->cluster_size_bits) + 1;
new_clu.flags = new_fid->flags;
if (!is_dir_empty(sb, &new_clu)) {
ret = -EEXIST;
goto out;
}
}
}
/* check the validity of directory name in the given new pathname */
ret = resolve_path(new_parent_inode, new_path, &newdir, &uni_name);
if (ret)
goto out2;
fs_set_vol_flags(sb, VOL_DIRTY);
if (olddir.dir == newdir.dir)
ret = exfat_rename_file(new_parent_inode, &olddir, dentry,
&uni_name, fid);
else
ret = move_file(new_parent_inode, &olddir, dentry, &newdir,
&uni_name, fid);
if ((ret == 0) && new_inode) {
/* delete entries of new_dir */
ep = get_entry_in_dir(sb, p_dir, new_entry, NULL);
if (!ep)
goto out;
num_entries = exfat_count_ext_entries(sb, p_dir,
new_entry, ep);
if (num_entries < 0)
goto out;
exfat_delete_dir_entry(sb, p_dir, new_entry, 0,
num_entries + 1);
}
out:
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out2:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsRemoveFile(struct inode *inode, struct file_id_t *fid)
{
s32 dentry;
int ret = 0;
struct chain_t dir, clu_to_free;
struct dentry_t *ep;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of the given file id */
if (!fid)
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
dir.dir = fid->dir.dir;
dir.size = fid->dir.size;
dir.flags = fid->dir.flags;
dentry = fid->entry;
ep = get_entry_in_dir(sb, &dir, dentry, NULL);
if (!ep) {
ret = -ENOENT;
goto out;
}
if (exfat_get_entry_attr(ep) & ATTR_READONLY) {
ret = -EPERM;
goto out;
}
fs_set_vol_flags(sb, VOL_DIRTY);
/* (1) update the directory entry */
remove_file(inode, &dir, dentry);
clu_to_free.dir = fid->start_clu;
clu_to_free.size = (s32)((fid->size - 1) >> p_fs->cluster_size_bits) + 1;
clu_to_free.flags = fid->flags;
/* (2) free the clusters */
exfat_free_cluster(sb, &clu_to_free, 0);
fid->size = 0;
fid->start_clu = CLUSTER_32(~0);
fid->flags = 0x03;
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
{
s32 count;
int ret = 0;
struct chain_t dir;
struct uni_name_t uni_name;
struct timestamp_t tm;
struct dentry_t *ep, *ep2;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
struct entry_set_cache_t *es = NULL;
u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0;
pr_debug("%s entered\n", __func__);
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
if (is_dir) {
if ((fid->dir.dir == p_fs->root_dir) &&
(fid->entry == -1)) {
info->attr = ATTR_SUBDIR;
memset((char *)&info->create_timestamp, 0,
sizeof(struct date_time_t));
memset((char *)&info->modify_timestamp, 0,
sizeof(struct date_time_t));
memset((char *)&info->access_timestamp, 0,
sizeof(struct date_time_t));
strcpy(info->name, ".");
dir.dir = p_fs->root_dir;
dir.flags = 0x01;
if (p_fs->root_dir == CLUSTER_32(0)) {
/* FAT16 root_dir */
info->Size = p_fs->dentries_in_root <<
DENTRY_SIZE_BITS;
} else {
info->Size = count_num_clusters(sb, &dir) <<
p_fs->cluster_size_bits;
}
count = count_dir_entries(sb, &dir);
if (count < 0) {
ret = count; /* propagate error upward */
goto out;
}
info->num_subdirs = count;
if (p_fs->dev_ejected)
ret = -EIO;
goto out;
}
}
/* get the directory entry of given file or directory */
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_2_ENTRIES, &ep);
if (!es) {
ret = -ENOENT;
goto out;
}
ep2 = ep + 1;
/* set FILE_INFO structure using the acquired struct dentry_t */
info->attr = exfat_get_entry_attr(ep);
exfat_get_entry_time(ep, &tm, TM_CREATE);
info->create_timestamp.year = tm.year;
info->create_timestamp.month = tm.mon;
info->create_timestamp.day = tm.day;
info->create_timestamp.hour = tm.hour;
info->create_timestamp.minute = tm.min;
info->create_timestamp.second = tm.sec;
info->create_timestamp.millisecond = 0;
exfat_get_entry_time(ep, &tm, TM_MODIFY);
info->modify_timestamp.year = tm.year;
info->modify_timestamp.month = tm.mon;
info->modify_timestamp.day = tm.day;
info->modify_timestamp.hour = tm.hour;
info->modify_timestamp.minute = tm.min;
info->modify_timestamp.second = tm.sec;
info->modify_timestamp.millisecond = 0;
memset((char *)&info->access_timestamp, 0, sizeof(struct date_time_t));
*uni_name.name = 0x0;
/* XXX this is very bad for exfat cuz name is already included in es.
* API should be revised
*/
exfat_get_uni_name_from_ext_entry(sb, &fid->dir, fid->entry,
uni_name.name);
nls_uniname_to_cstring(sb, info->name, &uni_name);
info->num_subdirs = 2;
info->Size = exfat_get_entry_size(ep2);
release_entry_set(es);
if (is_dir) {
dir.dir = fid->start_clu;
dir.flags = 0x01;
if (info->Size == 0)
info->Size = (u64)count_num_clusters(sb, &dir) <<
p_fs->cluster_size_bits;
count = count_dir_entries(sb, &dir);
if (count < 0) {
ret = count; /* propagate error upward */
goto out;
}
info->num_subdirs += count;
}
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
pr_debug("%s exited successfully\n", __func__);
return ret;
}
static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
{
int ret = 0;
struct timestamp_t tm;
struct dentry_t *ep, *ep2;
struct entry_set_cache_t *es = NULL;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0;
pr_debug("%s entered (inode %p info %p\n", __func__, inode, info);
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
if (is_dir) {
if ((fid->dir.dir == p_fs->root_dir) &&
(fid->entry == -1)) {
if (p_fs->dev_ejected)
ret = -EIO;
ret = 0;
goto out;
}
}
fs_set_vol_flags(sb, VOL_DIRTY);
/* get the directory entry of given file or directory */
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_ALL_ENTRIES, &ep);
if (!es) {
ret = -ENOENT;
goto out;
}
ep2 = ep + 1;
exfat_set_entry_attr(ep, info->attr);
/* set FILE_INFO structure using the acquired struct dentry_t */
tm.sec = info->create_timestamp.second;
tm.min = info->create_timestamp.minute;
tm.hour = info->create_timestamp.hour;
tm.day = info->create_timestamp.day;
tm.mon = info->create_timestamp.month;
tm.year = info->create_timestamp.year;
exfat_set_entry_time(ep, &tm, TM_CREATE);
tm.sec = info->modify_timestamp.second;
tm.min = info->modify_timestamp.minute;
tm.hour = info->modify_timestamp.hour;
tm.day = info->modify_timestamp.day;
tm.mon = info->modify_timestamp.month;
tm.year = info->modify_timestamp.year;
exfat_set_entry_time(ep, &tm, TM_MODIFY);
exfat_set_entry_size(ep2, info->Size);
update_dir_checksum_with_entry_set(sb, es);
release_entry_set(es);
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
pr_debug("%s exited (%d)\n", __func__, ret);
return ret;
}
static int ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu)
{
s32 num_clusters, num_alloced;
bool modified = false;
u32 last_clu;
int ret = 0;
struct chain_t new_clu;
struct dentry_t *ep;
struct entry_set_cache_t *es = NULL;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
/* check the validity of pointer parameters */
if (!clu)
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
fid->rwoffset = (s64)(clu_offset) << p_fs->cluster_size_bits;
if (EXFAT_I(inode)->mmu_private == 0)
num_clusters = 0;
else
num_clusters = (s32)((EXFAT_I(inode)->mmu_private - 1) >>
p_fs->cluster_size_bits) + 1;
*clu = last_clu = fid->start_clu;
if (fid->flags == 0x03) {
if ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) {
last_clu += clu_offset - 1;
if (clu_offset == num_clusters)
*clu = CLUSTER_32(~0);
else
*clu += clu_offset;
}
} else {
/* hint information */
if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
(clu_offset >= fid->hint_last_off)) {
clu_offset -= fid->hint_last_off;
*clu = fid->hint_last_clu;
}
while ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) {
last_clu = *clu;
if (exfat_fat_read(sb, *clu, clu) == -1) {
ret = -EIO;
goto out;
}
clu_offset--;
}
}
if (*clu == CLUSTER_32(~0)) {
fs_set_vol_flags(sb, VOL_DIRTY);
new_clu.dir = (last_clu == CLUSTER_32(~0)) ? CLUSTER_32(~0) :
last_clu + 1;
new_clu.size = 0;
new_clu.flags = fid->flags;
/* (1) allocate a cluster */
num_alloced = exfat_alloc_cluster(sb, 1, &new_clu);
if (num_alloced < 0) {
ret = -EIO;
goto out;
} else if (num_alloced == 0) {
ret = -ENOSPC;
goto out;
}
/* (2) append to the FAT chain */
if (last_clu == CLUSTER_32(~0)) {
if (new_clu.flags == 0x01)
fid->flags = 0x01;
fid->start_clu = new_clu.dir;
modified = true;
} else {
if (new_clu.flags != fid->flags) {
exfat_chain_cont_cluster(sb, fid->start_clu,
num_clusters);
fid->flags = 0x01;
modified = true;
}
if (new_clu.flags == 0x01)
exfat_fat_write(sb, last_clu, new_clu.dir);
}
num_clusters += num_alloced;
*clu = new_clu.dir;
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_ALL_ENTRIES, &ep);
if (!es) {
ret = -ENOENT;
goto out;
}
/* get stream entry */
ep++;
/* (3) update directory entry */
if (modified) {
exfat_set_entry_flag(ep, fid->flags);
exfat_set_entry_clu0(ep, fid->start_clu);
}
update_dir_checksum_with_entry_set(sb, es);
release_entry_set(es);
/* add number of new blocks to inode */
inode->i_blocks += num_alloced << (p_fs->cluster_size_bits - 9);
}
/* hint information */
fid->hint_last_off = (s32)(fid->rwoffset >> p_fs->cluster_size_bits);
fid->hint_last_clu = *clu;
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
/*----------------------------------------------------------------------*/
/* Directory Operation Functions */
/*----------------------------------------------------------------------*/
static int ffsCreateDir(struct inode *inode, char *path, struct file_id_t *fid)
{
int ret = 0;
struct chain_t dir;
struct uni_name_t uni_name;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
pr_debug("%s entered\n", __func__);
/* check the validity of pointer parameters */
if (!fid || !path || (*path == '\0'))
return -EINVAL;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
/* check the validity of directory name in the given old pathname */
ret = resolve_path(inode, path, &dir, &uni_name);
if (ret)
goto out;
fs_set_vol_flags(sb, VOL_DIRTY);
ret = create_dir(inode, &dir, &uni_name, fid);
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
{
int i, dentry, clu_offset;
int ret = 0;
s32 dentries_per_clu, dentries_per_clu_bits = 0;
u32 type;
sector_t sector;
struct chain_t dir, clu;
struct uni_name_t uni_name;
struct timestamp_t tm;
struct dentry_t *ep;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
/* check the validity of pointer parameters */
if (!dir_entry)
return -EINVAL;
/* check if the given file ID is opened */
if (fid->type != TYPE_DIR)
return -ENOTDIR;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
if (fid->entry == -1) {
dir.dir = p_fs->root_dir;
dir.flags = 0x01;
} else {
dir.dir = fid->start_clu;
dir.size = (s32)(fid->size >> p_fs->cluster_size_bits);
dir.flags = fid->flags;
}
dentry = (s32)fid->rwoffset;
if (dir.dir == CLUSTER_32(0)) {
/* FAT16 root_dir */
dentries_per_clu = p_fs->dentries_in_root;
if (dentry == dentries_per_clu) {
clu.dir = CLUSTER_32(~0);
} else {
clu.dir = dir.dir;
clu.size = dir.size;
clu.flags = dir.flags;
}
} else {
dentries_per_clu = p_fs->dentries_per_clu;
dentries_per_clu_bits = ilog2(dentries_per_clu);
clu_offset = dentry >> dentries_per_clu_bits;
clu.dir = dir.dir;
clu.size = dir.size;
clu.flags = dir.flags;
if (clu.flags == 0x03) {
clu.dir += clu_offset;
clu.size -= clu_offset;
} else {
/* hint_information */
if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
(clu_offset >= fid->hint_last_off)) {
clu_offset -= fid->hint_last_off;
clu.dir = fid->hint_last_clu;
}
while (clu_offset > 0) {
/* clu.dir = exfat_fat_read(sb, clu.dir); */
if (exfat_fat_read(sb, clu.dir, &clu.dir) == -1) {
ret = -EIO;
goto out;
}
clu_offset--;
}
}
}
while (clu.dir != CLUSTER_32(~0)) {
if (p_fs->dev_ejected)
break;
if (dir.dir == CLUSTER_32(0)) /* FAT16 root_dir */
i = dentry % dentries_per_clu;
else
i = dentry & (dentries_per_clu - 1);
for ( ; i < dentries_per_clu; i++, dentry++) {
ep = get_entry_in_dir(sb, &clu, i, &sector);
if (!ep) {
ret = -ENOENT;
goto out;
}
type = exfat_get_entry_type(ep);
if (type == TYPE_UNUSED)
break;
if ((type != TYPE_FILE) && (type != TYPE_DIR))
continue;
exfat_buf_lock(sb, sector);
dir_entry->attr = exfat_get_entry_attr(ep);
exfat_get_entry_time(ep, &tm, TM_CREATE);
dir_entry->create_timestamp.year = tm.year;
dir_entry->create_timestamp.month = tm.mon;
dir_entry->create_timestamp.day = tm.day;
dir_entry->create_timestamp.hour = tm.hour;
dir_entry->create_timestamp.minute = tm.min;
dir_entry->create_timestamp.second = tm.sec;
dir_entry->create_timestamp.millisecond = 0;
exfat_get_entry_time(ep, &tm, TM_MODIFY);
dir_entry->modify_timestamp.year = tm.year;
dir_entry->modify_timestamp.month = tm.mon;
dir_entry->modify_timestamp.day = tm.day;
dir_entry->modify_timestamp.hour = tm.hour;
dir_entry->modify_timestamp.minute = tm.min;
dir_entry->modify_timestamp.second = tm.sec;
dir_entry->modify_timestamp.millisecond = 0;
memset((char *)&dir_entry->access_timestamp, 0,
sizeof(struct date_time_t));
*uni_name.name = 0x0;
exfat_get_uni_name_from_ext_entry(sb, &dir, dentry,
uni_name.name);
nls_uniname_to_cstring(sb, dir_entry->name, &uni_name);
exfat_buf_unlock(sb, sector);
ep = get_entry_in_dir(sb, &clu, i + 1, NULL);
if (!ep) {
ret = -ENOENT;
goto out;
}
dir_entry->Size = exfat_get_entry_size(ep);
/* hint information */
if (dir.dir == CLUSTER_32(0)) { /* FAT16 root_dir */
} else {
fid->hint_last_off = dentry >>
dentries_per_clu_bits;
fid->hint_last_clu = clu.dir;
}
fid->rwoffset = (s64)(++dentry);
if (p_fs->dev_ejected)
ret = -EIO;
goto out;
}
if (dir.dir == CLUSTER_32(0))
break; /* FAT16 root_dir */
if (clu.flags == 0x03) {
if ((--clu.size) > 0)
clu.dir++;
else
clu.dir = CLUSTER_32(~0);
} else {
/* clu.dir = exfat_fat_read(sb, clu.dir); */
if (exfat_fat_read(sb, clu.dir, &clu.dir) == -1) {
ret = -EIO;
goto out;
}
}
}
*dir_entry->name = '\0';
fid->rwoffset = (s64)(++dentry);
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
static int ffsRemoveDir(struct inode *inode, struct file_id_t *fid)
{
s32 dentry;
int ret = 0;
struct chain_t dir, clu_to_free;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of the given file id */
if (!fid)
return -EINVAL;
dir.dir = fid->dir.dir;
dir.size = fid->dir.size;
dir.flags = fid->dir.flags;
dentry = fid->entry;
/* acquire the lock for file system critical section */
mutex_lock(&p_fs->v_mutex);
clu_to_free.dir = fid->start_clu;
clu_to_free.size = (s32)((fid->size - 1) >> p_fs->cluster_size_bits) + 1;
clu_to_free.flags = fid->flags;
if (!is_dir_empty(sb, &clu_to_free)) {
ret = -ENOTEMPTY;
goto out;
}
fs_set_vol_flags(sb, VOL_DIRTY);
/* (1) update the directory entry */
remove_file(inode, &dir, dentry);
/* (2) free the clusters */
exfat_free_cluster(sb, &clu_to_free, 1);
fid->size = 0;
fid->start_clu = CLUSTER_32(~0);
fid->flags = 0x03;
#ifndef CONFIG_STAGING_EXFAT_DELAYED_SYNC
fs_sync(sb, true);
fs_set_vol_flags(sb, VOL_CLEAN);
#endif
if (p_fs->dev_ejected)
ret = -EIO;
out:
/* release the lock for file system critical section */
mutex_unlock(&p_fs->v_mutex);
return ret;
}
/*======================================================================*/
/* Directory Entry Operations */
/*======================================================================*/
static int exfat_readdir(struct file *filp, struct dir_context *ctx)
{
struct inode *inode = file_inode(filp);
struct super_block *sb = inode->i_sb;
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
struct dir_entry_t de;
struct inode *tmp;
unsigned long inum;
loff_t cpos, i_pos;
int err = 0;
__lock_super(sb);
cpos = ctx->pos;
/* Fake . and .. for any directory. */
while (cpos < 2) {
if (inode->i_ino == EXFAT_ROOT_INO)
inum = EXFAT_ROOT_INO;
else if (cpos == 0)
inum = inode->i_ino;
else /* (cpos == 1) */
inum = parent_ino(filp->f_path.dentry);
if (!dir_emit_dots(filp, ctx))
goto out;
cpos++;
ctx->pos++;
}
if (cpos == 2)
cpos = 0;
if (cpos & (DENTRY_SIZE - 1)) {
err = -ENOENT;
goto out;
}
get_new:
EXFAT_I(inode)->fid.size = i_size_read(inode);
EXFAT_I(inode)->fid.rwoffset = cpos >> DENTRY_SIZE_BITS;
err = ffsReadDir(inode, &de);
if (err) {
/* at least we tried to read a sector
* move cpos to next sector position (should be aligned)
*/
if (err == -EIO) {
cpos += 1 << p_bd->sector_size_bits;
cpos &= ~((1 << p_bd->sector_size_bits) - 1);
}
goto end_of_dir;
}
cpos = EXFAT_I(inode)->fid.rwoffset << DENTRY_SIZE_BITS;
if (!de.name[0])
goto end_of_dir;
i_pos = ((loff_t)EXFAT_I(inode)->fid.start_clu << 32) |
((EXFAT_I(inode)->fid.rwoffset - 1) & 0xffffffff);
tmp = exfat_iget(sb, i_pos);
if (tmp) {
inum = tmp->i_ino;
iput(tmp);
} else {
inum = iunique(sb, EXFAT_ROOT_INO);
}
if (!dir_emit(ctx, de.name, strlen(de.name), inum,
(de.attr & ATTR_SUBDIR) ? DT_DIR : DT_REG))
goto out;
ctx->pos = cpos;
goto get_new;
end_of_dir:
ctx->pos = cpos;
out:
__unlock_super(sb);
return err;
}
static int exfat_ioctl_volume_id(struct inode *dir)
{
struct super_block *sb = dir->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct fs_info_t *p_fs = &sbi->fs_info;
return p_fs->vol_id;
}
static long exfat_generic_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
struct inode *inode = filp->f_path.dentry->d_inode;
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
unsigned int flags;
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
switch (cmd) {
case EXFAT_IOCTL_GET_VOLUME_ID:
return exfat_ioctl_volume_id(inode);
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
case EXFAT_IOC_GET_DEBUGFLAGS: {
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
flags = sbi->debug_flags;
return put_user(flags, (int __user *)arg);
}
case EXFAT_IOC_SET_DEBUGFLAGS: {
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (get_user(flags, (int __user *)arg))
return -EFAULT;
__lock_super(sb);
sbi->debug_flags = flags;
__unlock_super(sb);
return 0;
}
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
default:
return -ENOTTY; /* Inappropriate ioctl for device */
}
}
static const struct file_operations exfat_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.iterate = exfat_readdir,
.unlocked_ioctl = exfat_generic_ioctl,
.fsync = generic_file_fsync,
};
static int exfat_create(struct inode *dir, struct dentry *dentry, umode_t mode,
bool excl)
{
struct super_block *sb = dir->i_sb;
struct timespec64 curtime;
struct inode *inode;
struct file_id_t fid;
loff_t i_pos;
int err;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
err = ffsCreateFile(dir, (u8 *)dentry->d_name.name, &fid);
if (err)
goto out;
INC_IVERSION(dir);
curtime = current_time(dir);
dir->i_ctime = curtime;
dir->i_mtime = curtime;
dir->i_atime = curtime;
if (IS_DIRSYNC(dir))
(void)exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
i_pos = ((loff_t)fid.dir.dir << 32) | (fid.entry & 0xffffffff);
inode = exfat_build_inode(sb, &fid, i_pos);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto out;
}
INC_IVERSION(inode);
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_atime = curtime;
inode->i_ctime = curtime;
/*
* timestamp is already written, so mark_inode_dirty() is unnecessary.
*/
dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
d_instantiate(dentry, inode);
out:
__unlock_super(sb);
pr_debug("%s exited\n", __func__);
return err;
}
static int exfat_find(struct inode *dir, struct qstr *qname,
struct file_id_t *fid)
{
int err;
if (qname->len == 0)
return -ENOENT;
err = ffsLookupFile(dir, (u8 *)qname->name, fid);
if (err)
return -ENOENT;
return 0;
}
static int exfat_d_anon_disconn(struct dentry *dentry)
{
return IS_ROOT(dentry) && (dentry->d_flags & DCACHE_DISCONNECTED);
}
static struct dentry *exfat_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;
struct dentry *alias;
int err;
struct file_id_t fid;
loff_t i_pos;
mode_t i_mode;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
err = exfat_find(dir, &dentry->d_name, &fid);
if (err) {
if (err == -ENOENT) {
inode = NULL;
goto out;
}
goto error;
}
i_pos = ((loff_t)fid.dir.dir << 32) | (fid.entry & 0xffffffff);
inode = exfat_build_inode(sb, &fid, i_pos);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto error;
}
i_mode = inode->i_mode;
alias = d_find_alias(inode);
if (alias && !exfat_d_anon_disconn(alias)) {
BUG_ON(d_unhashed(alias));
if (!S_ISDIR(i_mode))
d_move(alias, dentry);
iput(inode);
__unlock_super(sb);
pr_debug("%s exited 1\n", __func__);
return alias;
}
dput(alias);
out:
__unlock_super(sb);
dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
dentry = d_splice_alias(inode, dentry);
if (dentry)
dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
pr_debug("%s exited 2\n", __func__);
return dentry;
error:
__unlock_super(sb);
pr_debug("%s exited 3\n", __func__);
return ERR_PTR(err);
}
static inline unsigned long exfat_hash(loff_t i_pos)
{
return hash_32(i_pos, EXFAT_HASH_BITS);
}
static void exfat_attach(struct inode *inode, loff_t i_pos)
{
struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
spin_lock(&sbi->inode_hash_lock);
EXFAT_I(inode)->i_pos = i_pos;
hlist_add_head(&EXFAT_I(inode)->i_hash_fat, head);
spin_unlock(&sbi->inode_hash_lock);
}
static void exfat_detach(struct inode *inode)
{
struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
spin_lock(&sbi->inode_hash_lock);
hlist_del_init(&EXFAT_I(inode)->i_hash_fat);
EXFAT_I(inode)->i_pos = 0;
spin_unlock(&sbi->inode_hash_lock);
}
static int exfat_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
struct super_block *sb = dir->i_sb;
struct timespec64 curtime;
int err;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
EXFAT_I(inode)->fid.size = i_size_read(inode);
err = ffsRemoveFile(dir, &(EXFAT_I(inode)->fid));
if (err)
goto out;
INC_IVERSION(dir);
curtime = current_time(dir);
dir->i_mtime = curtime;
dir->i_atime = curtime;
if (IS_DIRSYNC(dir))
(void)exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
clear_nlink(inode);
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_atime = curtime;
exfat_detach(inode);
remove_inode_hash(inode);
out:
__unlock_super(sb);
pr_debug("%s exited\n", __func__);
return err;
}
static int exfat_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct super_block *sb = dir->i_sb;
struct timespec64 curtime;
struct inode *inode;
struct file_id_t fid;
loff_t i_pos;
int err;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
err = ffsCreateDir(dir, (u8 *)dentry->d_name.name, &fid);
if (err)
goto out;
INC_IVERSION(dir);
curtime = current_time(dir);
dir->i_ctime = curtime;
dir->i_mtime = curtime;
dir->i_atime = curtime;
if (IS_DIRSYNC(dir))
(void)exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
inc_nlink(dir);
i_pos = ((loff_t)fid.dir.dir << 32) | (fid.entry & 0xffffffff);
inode = exfat_build_inode(sb, &fid, i_pos);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto out;
}
INC_IVERSION(inode);
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_atime = curtime;
inode->i_ctime = curtime;
/* timestamp is already written, so mark_inode_dirty() is unneeded. */
dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
d_instantiate(dentry, inode);
out:
__unlock_super(sb);
pr_debug("%s exited\n", __func__);
return err;
}
static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
struct super_block *sb = dir->i_sb;
struct timespec64 curtime;
int err;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
EXFAT_I(inode)->fid.size = i_size_read(inode);
err = ffsRemoveDir(dir, &(EXFAT_I(inode)->fid));
if (err)
goto out;
INC_IVERSION(dir);
curtime = current_time(dir);
dir->i_mtime = curtime;
dir->i_atime = curtime;
if (IS_DIRSYNC(dir))
(void)exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
drop_nlink(dir);
clear_nlink(inode);
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_atime = curtime;
exfat_detach(inode);
remove_inode_hash(inode);
out:
__unlock_super(sb);
pr_debug("%s exited\n", __func__);
return err;
}
static int exfat_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
struct inode *old_inode, *new_inode;
struct super_block *sb = old_dir->i_sb;
struct timespec64 curtime;
loff_t i_pos;
int err;
if (flags)
return -EINVAL;
__lock_super(sb);
pr_debug("%s entered\n", __func__);
old_inode = old_dentry->d_inode;
new_inode = new_dentry->d_inode;
EXFAT_I(old_inode)->fid.size = i_size_read(old_inode);
err = ffsMoveFile(old_dir, &(EXFAT_I(old_inode)->fid), new_dir,
new_dentry);
if (err)
goto out;
INC_IVERSION(new_dir);
curtime = current_time(new_dir);
new_dir->i_ctime = curtime;
new_dir->i_mtime = curtime;
new_dir->i_atime = curtime;
if (IS_DIRSYNC(new_dir))
(void)exfat_sync_inode(new_dir);
else
mark_inode_dirty(new_dir);
i_pos = ((loff_t)EXFAT_I(old_inode)->fid.dir.dir << 32) |
(EXFAT_I(old_inode)->fid.entry & 0xffffffff);
exfat_detach(old_inode);
exfat_attach(old_inode, i_pos);
if (IS_DIRSYNC(new_dir))
(void)exfat_sync_inode(old_inode);
else
mark_inode_dirty(old_inode);
if ((S_ISDIR(old_inode->i_mode)) && (old_dir != new_dir)) {
drop_nlink(old_dir);
if (!new_inode)
inc_nlink(new_dir);
}
INC_IVERSION(old_dir);
curtime = current_time(old_dir);
old_dir->i_ctime = curtime;
old_dir->i_mtime = curtime;
if (IS_DIRSYNC(old_dir))
(void)exfat_sync_inode(old_dir);
else
mark_inode_dirty(old_dir);
if (new_inode) {
exfat_detach(new_inode);
drop_nlink(new_inode);
if (S_ISDIR(new_inode->i_mode))
drop_nlink(new_inode);
new_inode->i_ctime = current_time(new_inode);
}
out:
__unlock_super(sb);
pr_debug("%s exited\n", __func__);
return err;
}
static int exfat_cont_expand(struct inode *inode, loff_t size)
{
struct address_space *mapping = inode->i_mapping;
loff_t start = i_size_read(inode), count = size - i_size_read(inode);
struct timespec64 curtime;
int err, err2;
err = generic_cont_expand_simple(inode, size);
if (err != 0)
return err;
curtime = current_time(inode);
inode->i_ctime = curtime;
inode->i_mtime = curtime;
mark_inode_dirty(inode);
if (IS_SYNC(inode)) {
err = filemap_fdatawrite_range(mapping, start,
start + count - 1);
err2 = sync_mapping_buffers(mapping);
err = (err) ? (err) : (err2);
err2 = write_inode_now(inode, 1);
err = (err) ? (err) : (err2);
if (!err)
err = filemap_fdatawait_range(mapping, start,
start + count - 1);
}
return err;
}
static int exfat_allow_set_time(struct exfat_sb_info *sbi, struct inode *inode)
{
mode_t allow_utime = sbi->options.allow_utime;
if (!uid_eq(current_fsuid(), inode->i_uid)) {
if (in_group_p(inode->i_gid))
allow_utime >>= 3;
if (allow_utime & MAY_WRITE)
return 1;
}
/* use a default check */
return 0;
}
static int exfat_sanitize_mode(const struct exfat_sb_info *sbi,
struct inode *inode, umode_t *mode_ptr)
{
mode_t i_mode, mask, perm;
i_mode = inode->i_mode;
if (S_ISREG(i_mode) || S_ISLNK(i_mode))
mask = sbi->options.fs_fmask;
else
mask = sbi->options.fs_dmask;
perm = *mode_ptr & ~(S_IFMT | mask);
/* Of the r and x bits, all (subject to umask) must be present.*/
if ((perm & 0555) != (i_mode & 0555))
return -EPERM;
if (exfat_mode_can_hold_ro(inode)) {
/*
* Of the w bits, either all (subject to umask) or none must be
* present.
*/
if ((perm & 0222) && ((perm & 0222) != (0222 & ~mask)))
return -EPERM;
} else {
/*
* If exfat_mode_can_hold_ro(inode) is false, can't change w
* bits.
*/
if ((perm & 0222) != (0222 & ~mask))
return -EPERM;
}
*mode_ptr &= S_IFMT | perm;
return 0;
}
static void exfat_truncate(struct inode *inode, loff_t old_size)
{
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct fs_info_t *p_fs = &sbi->fs_info;
struct timespec64 curtime;
int err;
__lock_super(sb);
/*
* This protects against truncating a file bigger than it was then
* trying to write into the hole.
*/
if (EXFAT_I(inode)->mmu_private > i_size_read(inode))
EXFAT_I(inode)->mmu_private = i_size_read(inode);
if (EXFAT_I(inode)->fid.start_clu == 0)
goto out;
err = ffsTruncateFile(inode, old_size, i_size_read(inode));
if (err)
goto out;
curtime = current_time(inode);
inode->i_ctime = curtime;
inode->i_mtime = curtime;
if (IS_DIRSYNC(inode))
(void)exfat_sync_inode(inode);
else
mark_inode_dirty(inode);
inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1)) &
~((loff_t)p_fs->cluster_size - 1)) >> 9;
out:
__unlock_super(sb);
}
static int exfat_setattr(struct dentry *dentry, struct iattr *attr)
{
struct exfat_sb_info *sbi = EXFAT_SB(dentry->d_sb);
struct inode *inode = dentry->d_inode;
unsigned int ia_valid;
int error;
loff_t old_size;
pr_debug("%s entered\n", __func__);
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size > i_size_read(inode)) {
error = exfat_cont_expand(inode, attr->ia_size);
if (error || attr->ia_valid == ATTR_SIZE)
return error;
attr->ia_valid &= ~ATTR_SIZE;
}
ia_valid = attr->ia_valid;
if ((ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) &&
exfat_allow_set_time(sbi, inode)) {
attr->ia_valid &= ~(ATTR_MTIME_SET |
ATTR_ATIME_SET |
ATTR_TIMES_SET);
}
error = setattr_prepare(dentry, attr);
attr->ia_valid = ia_valid;
if (error)
return error;
if (((attr->ia_valid & ATTR_UID) &&
(!uid_eq(attr->ia_uid, sbi->options.fs_uid))) ||
((attr->ia_valid & ATTR_GID) &&
(!gid_eq(attr->ia_gid, sbi->options.fs_gid))) ||
((attr->ia_valid & ATTR_MODE) &&
(attr->ia_mode & ~(S_IFREG | S_IFLNK | S_IFDIR | 0777)))) {
return -EPERM;
}
/*
* We don't return -EPERM here. Yes, strange, but this is too
* old behavior.
*/
if (attr->ia_valid & ATTR_MODE) {
if (exfat_sanitize_mode(sbi, inode, &attr->ia_mode) < 0)
attr->ia_valid &= ~ATTR_MODE;
}
EXFAT_I(inode)->fid.size = i_size_read(inode);
if (attr->ia_valid & ATTR_SIZE) {
old_size = i_size_read(inode);
down_write(&EXFAT_I(inode)->truncate_lock);
truncate_setsize(inode, attr->ia_size);
exfat_truncate(inode, old_size);
up_write(&EXFAT_I(inode)->truncate_lock);
}
setattr_copy(inode, attr);
mark_inode_dirty(inode);
pr_debug("%s exited\n", __func__);
return error;
}
static int exfat_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int flags)
{
struct inode *inode = path->dentry->d_inode;
pr_debug("%s entered\n", __func__);
generic_fillattr(inode, stat);
stat->blksize = EXFAT_SB(inode->i_sb)->fs_info.cluster_size;
pr_debug("%s exited\n", __func__);
return 0;
}
static const struct inode_operations exfat_dir_inode_operations = {
.create = exfat_create,
.lookup = exfat_lookup,
.unlink = exfat_unlink,
.mkdir = exfat_mkdir,
.rmdir = exfat_rmdir,
.rename = exfat_rename,
.setattr = exfat_setattr,
.getattr = exfat_getattr,
};
/*======================================================================*/
/* File Operations */
/*======================================================================*/
static int exfat_file_release(struct inode *inode, struct file *filp)
{
struct super_block *sb = inode->i_sb;
EXFAT_I(inode)->fid.size = i_size_read(inode);
ffsSyncVol(sb, false);
return 0;
}
static const struct file_operations exfat_file_operations = {
.llseek = generic_file_llseek,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.release = exfat_file_release,
.unlocked_ioctl = exfat_generic_ioctl,
.fsync = generic_file_fsync,
.splice_read = generic_file_splice_read,
};
static const struct inode_operations exfat_file_inode_operations = {
.setattr = exfat_setattr,
.getattr = exfat_getattr,
};
/*======================================================================*/
/* Address Space Operations */
/*======================================================================*/
static int exfat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
unsigned long *mapped_blocks, int *create)
{
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct fs_info_t *p_fs = &sbi->fs_info;
const unsigned long blocksize = sb->s_blocksize;
const unsigned char blocksize_bits = sb->s_blocksize_bits;
sector_t last_block;
int err, clu_offset, sec_offset;
unsigned int cluster;
*phys = 0;
*mapped_blocks = 0;
last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits;
if (sector >= last_block) {
if (*create == 0)
return 0;
} else {
*create = 0;
}
/* cluster offset */
clu_offset = sector >> p_fs->sectors_per_clu_bits;
/* sector offset in cluster */
sec_offset = sector & (p_fs->sectors_per_clu - 1);
EXFAT_I(inode)->fid.size = i_size_read(inode);
err = ffsMapCluster(inode, clu_offset, &cluster);
if (!err && (cluster != CLUSTER_32(~0))) {
*phys = START_SECTOR(cluster) + sec_offset;
*mapped_blocks = p_fs->sectors_per_clu - sec_offset;
}
return 0;
}
static int exfat_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
struct super_block *sb = inode->i_sb;
unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
int err;
unsigned long mapped_blocks;
sector_t phys;
__lock_super(sb);
err = exfat_bmap(inode, iblock, &phys, &mapped_blocks, &create);
if (err) {
__unlock_super(sb);
return err;
}
if (phys) {
max_blocks = min(mapped_blocks, max_blocks);
if (create) {
EXFAT_I(inode)->mmu_private += max_blocks <<
sb->s_blocksize_bits;
set_buffer_new(bh_result);
}
map_bh(bh_result, sb, phys);
}
bh_result->b_size = max_blocks << sb->s_blocksize_bits;
__unlock_super(sb);
return 0;
}
static int exfat_readpage(struct file *file, struct page *page)
{
return mpage_readpage(page, exfat_get_block);
}
static int exfat_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned int nr_pages)
{
return mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
}
static int exfat_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page, exfat_get_block, wbc);
}
static int exfat_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
return mpage_writepages(mapping, wbc, exfat_get_block);
}
static void exfat_write_failed(struct address_space *mapping, loff_t to)
{
struct inode *inode = mapping->host;
if (to > i_size_read(inode)) {
truncate_pagecache(inode, i_size_read(inode));
EXFAT_I(inode)->fid.size = i_size_read(inode);
exfat_truncate(inode, i_size_read(inode));
}
}
static int exfat_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned int len, unsigned int flags,
struct page **pagep, void **fsdata)
{
int ret;
*pagep = NULL;
ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
exfat_get_block,
&EXFAT_I(mapping->host)->mmu_private);
if (ret < 0)
exfat_write_failed(mapping, pos + len);
return ret;
}
static int exfat_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned int len, unsigned int copied,
struct page *pagep, void *fsdata)
{
struct inode *inode = mapping->host;
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
struct timespec64 curtime;
int err;
err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
if (err < len)
exfat_write_failed(mapping, pos + len);
if (!(err < 0) && !(fid->attr & ATTR_ARCHIVE)) {
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_ctime = curtime;
fid->attr |= ATTR_ARCHIVE;
mark_inode_dirty(inode);
}
return err;
}
static ssize_t exfat_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct address_space *mapping = iocb->ki_filp->f_mapping;
ssize_t ret;
int rw;
rw = iov_iter_rw(iter);
if (rw == WRITE) {
if (EXFAT_I(inode)->mmu_private < iov_iter_count(iter))
return 0;
}
ret = blockdev_direct_IO(iocb, inode, iter, exfat_get_block);
if ((ret < 0) && (rw & WRITE))
exfat_write_failed(mapping, iov_iter_count(iter));
return ret;
}
static sector_t _exfat_bmap(struct address_space *mapping, sector_t block)
{
sector_t blocknr;
/* exfat_get_cluster() assumes the requested blocknr isn't truncated. */
down_read(&EXFAT_I(mapping->host)->truncate_lock);
blocknr = generic_block_bmap(mapping, block, exfat_get_block);
up_read(&EXFAT_I(mapping->host)->truncate_lock);
return blocknr;
}
static const struct address_space_operations exfat_aops = {
.readpage = exfat_readpage,
.readpages = exfat_readpages,
.writepage = exfat_writepage,
.writepages = exfat_writepages,
.write_begin = exfat_write_begin,
.write_end = exfat_write_end,
.direct_IO = exfat_direct_IO,
.bmap = _exfat_bmap
};
/*======================================================================*/
/* Super Operations */
/*======================================================================*/
static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_inode_info *info;
struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
struct inode *inode = NULL;
spin_lock(&sbi->inode_hash_lock);
hlist_for_each_entry(info, head, i_hash_fat) {
BUG_ON(info->vfs_inode.i_sb != sb);
if (i_pos != info->i_pos)
continue;
inode = igrab(&info->vfs_inode);
if (inode)
break;
}
spin_unlock(&sbi->inode_hash_lock);
return inode;
}
/* doesn't deal with root inode */
static int exfat_fill_inode(struct inode *inode, struct file_id_t *fid)
{
struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
struct fs_info_t *p_fs = &sbi->fs_info;
struct dir_entry_t info;
memcpy(&(EXFAT_I(inode)->fid), fid, sizeof(struct file_id_t));
ffsReadStat(inode, &info);
EXFAT_I(inode)->i_pos = 0;
EXFAT_I(inode)->target = NULL;
inode->i_uid = sbi->options.fs_uid;
inode->i_gid = sbi->options.fs_gid;
INC_IVERSION(inode);
inode->i_generation = prandom_u32();
if (info.attr & ATTR_SUBDIR) { /* directory */
inode->i_generation &= ~1;
inode->i_mode = exfat_make_mode(sbi, info.attr, 0777);
inode->i_op = &exfat_dir_inode_operations;
inode->i_fop = &exfat_dir_operations;
i_size_write(inode, info.Size);
EXFAT_I(inode)->mmu_private = i_size_read(inode);
set_nlink(inode, info.num_subdirs);
} else { /* regular file */
inode->i_generation |= 1;
inode->i_mode = exfat_make_mode(sbi, info.attr, 0777);
inode->i_op = &exfat_file_inode_operations;
inode->i_fop = &exfat_file_operations;
inode->i_mapping->a_ops = &exfat_aops;
inode->i_mapping->nrpages = 0;
i_size_write(inode, info.Size);
EXFAT_I(inode)->mmu_private = i_size_read(inode);
}
exfat_save_attr(inode, info.attr);
inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1))
& ~((loff_t)p_fs->cluster_size - 1)) >> 9;
exfat_time_fat2unix(&inode->i_mtime, &info.modify_timestamp);
exfat_time_fat2unix(&inode->i_ctime, &info.create_timestamp);
exfat_time_fat2unix(&inode->i_atime, &info.access_timestamp);
return 0;
}
static struct inode *exfat_build_inode(struct super_block *sb,
struct file_id_t *fid, loff_t i_pos)
{
struct inode *inode;
int err;
inode = exfat_iget(sb, i_pos);
if (inode)
goto out;
inode = new_inode(sb);
if (!inode) {
inode = ERR_PTR(-ENOMEM);
goto out;
}
inode->i_ino = iunique(sb, EXFAT_ROOT_INO);
SET_IVERSION(inode, 1);
err = exfat_fill_inode(inode, fid);
if (err) {
iput(inode);
inode = ERR_PTR(err);
goto out;
}
exfat_attach(inode, i_pos);
insert_inode_hash(inode);
out:
return inode;
}
static int exfat_sync_inode(struct inode *inode)
{
return exfat_write_inode(inode, NULL);
}
static struct inode *exfat_alloc_inode(struct super_block *sb)
{
struct exfat_inode_info *ei;
ei = kmem_cache_alloc(exfat_inode_cachep, GFP_NOFS);
if (!ei)
return NULL;
init_rwsem(&ei->truncate_lock);
return &ei->vfs_inode;
}
static void exfat_destroy_inode(struct inode *inode)
{
kfree(EXFAT_I(inode)->target);
EXFAT_I(inode)->target = NULL;
kmem_cache_free(exfat_inode_cachep, EXFAT_I(inode));
}
static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct dir_entry_t info;
if (inode->i_ino == EXFAT_ROOT_INO)
return 0;
info.attr = exfat_make_attr(inode);
info.Size = i_size_read(inode);
exfat_time_unix2fat(&inode->i_mtime, &info.modify_timestamp);
exfat_time_unix2fat(&inode->i_ctime, &info.create_timestamp);
exfat_time_unix2fat(&inode->i_atime, &info.access_timestamp);
ffsWriteStat(inode, &info);
return 0;
}
static void exfat_evict_inode(struct inode *inode)
{
truncate_inode_pages(&inode->i_data, 0);
if (!inode->i_nlink)
i_size_write(inode, 0);
invalidate_inode_buffers(inode);
clear_inode(inode);
exfat_detach(inode);
remove_inode_hash(inode);
}
static void exfat_free_super(struct exfat_sb_info *sbi)
{
if (sbi->nls_disk)
unload_nls(sbi->nls_disk);
if (sbi->nls_io)
unload_nls(sbi->nls_io);
if (sbi->options.iocharset != exfat_default_iocharset)
kfree(sbi->options.iocharset);
/* mutex_init is in exfat_fill_super function. only for 3.7+ */
mutex_destroy(&sbi->s_lock);
kvfree(sbi);
}
static void exfat_put_super(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
if (__is_sb_dirty(sb))
exfat_write_super(sb);
ffsUmountVol(sb);
sb->s_fs_info = NULL;
exfat_free_super(sbi);
}
static void exfat_write_super(struct super_block *sb)
{
__lock_super(sb);
__set_sb_clean(sb);
if (!sb_rdonly(sb))
ffsSyncVol(sb, true);
__unlock_super(sb);
}
static int exfat_sync_fs(struct super_block *sb, int wait)
{
int err = 0;
if (__is_sb_dirty(sb)) {
__lock_super(sb);
__set_sb_clean(sb);
err = ffsSyncVol(sb, true);
__unlock_super(sb);
}
return err;
}
static int exfat_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
struct vol_info_t info;
if (p_fs->used_clusters == UINT_MAX) {
if (ffsGetVolInfo(sb, &info) == -EIO)
return -EIO;
} else {
info.FatType = EXFAT;
info.ClusterSize = p_fs->cluster_size;
info.NumClusters = p_fs->num_clusters - 2;
info.UsedClusters = p_fs->used_clusters;
info.FreeClusters = info.NumClusters - info.UsedClusters;
if (p_fs->dev_ejected)
pr_info("[EXFAT] statfs on device that is ejected\n");
}
buf->f_type = sb->s_magic;
buf->f_bsize = info.ClusterSize;
buf->f_blocks = info.NumClusters;
buf->f_bfree = info.FreeClusters;
buf->f_bavail = info.FreeClusters;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 260;
return 0;
}
static int exfat_remount(struct super_block *sb, int *flags, char *data)
{
*flags |= SB_NODIRATIME;
return 0;
}
static int exfat_show_options(struct seq_file *m, struct dentry *root)
{
struct exfat_sb_info *sbi = EXFAT_SB(root->d_sb);
struct exfat_mount_options *opts = &sbi->options;
if (__kuid_val(opts->fs_uid))
seq_printf(m, ",uid=%u", __kuid_val(opts->fs_uid));
if (__kgid_val(opts->fs_gid))
seq_printf(m, ",gid=%u", __kgid_val(opts->fs_gid));
seq_printf(m, ",fmask=%04o", opts->fs_fmask);
seq_printf(m, ",dmask=%04o", opts->fs_dmask);
if (opts->allow_utime)
seq_printf(m, ",allow_utime=%04o", opts->allow_utime);
if (sbi->nls_disk)
seq_printf(m, ",codepage=%s", sbi->nls_disk->charset);
if (sbi->nls_io)
seq_printf(m, ",iocharset=%s", sbi->nls_io->charset);
seq_printf(m, ",namecase=%u", opts->casesensitive);
if (opts->errors == EXFAT_ERRORS_CONT)
seq_puts(m, ",errors=continue");
else if (opts->errors == EXFAT_ERRORS_PANIC)
seq_puts(m, ",errors=panic");
else
seq_puts(m, ",errors=remount-ro");
#ifdef CONFIG_STAGING_EXFAT_DISCARD
if (opts->discard)
seq_puts(m, ",discard");
#endif
return 0;
}
static const struct super_operations exfat_sops = {
.alloc_inode = exfat_alloc_inode,
.destroy_inode = exfat_destroy_inode,
.write_inode = exfat_write_inode,
.evict_inode = exfat_evict_inode,
.put_super = exfat_put_super,
.sync_fs = exfat_sync_fs,
.statfs = exfat_statfs,
.remount_fs = exfat_remount,
.show_options = exfat_show_options,
};
/*======================================================================*/
/* Export Operations */
/*======================================================================*/
static struct inode *exfat_nfs_get_inode(struct super_block *sb, u64 ino,
u32 generation)
{
struct inode *inode = NULL;
if (ino < EXFAT_ROOT_INO)
return inode;
inode = ilookup(sb, ino);
if (inode && generation && (inode->i_generation != generation)) {
iput(inode);
inode = NULL;
}
return inode;
}
static struct dentry *exfat_fh_to_dentry(struct super_block *sb,
struct fid *fid, int fh_len,
int fh_type)
{
return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
exfat_nfs_get_inode);
}
static struct dentry *exfat_fh_to_parent(struct super_block *sb,
struct fid *fid, int fh_len,
int fh_type)
{
return generic_fh_to_parent(sb, fid, fh_len, fh_type,
exfat_nfs_get_inode);
}
static const struct export_operations exfat_export_ops = {
.fh_to_dentry = exfat_fh_to_dentry,
.fh_to_parent = exfat_fh_to_parent,
};
/*======================================================================*/
/* Super Block Read Operations */
/*======================================================================*/
enum {
Opt_uid,
Opt_gid,
Opt_umask,
Opt_dmask,
Opt_fmask,
Opt_allow_utime,
Opt_codepage,
Opt_charset,
Opt_namecase,
Opt_debug,
Opt_err_cont,
Opt_err_panic,
Opt_err_ro,
Opt_utf8_hack,
Opt_err,
#ifdef CONFIG_STAGING_EXFAT_DISCARD
Opt_discard,
#endif /* EXFAT_CONFIG_DISCARD */
};
static const match_table_t exfat_tokens = {
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_umask, "umask=%o"},
{Opt_dmask, "dmask=%o"},
{Opt_fmask, "fmask=%o"},
{Opt_allow_utime, "allow_utime=%o"},
{Opt_codepage, "codepage=%u"},
{Opt_charset, "iocharset=%s"},
{Opt_namecase, "namecase=%u"},
{Opt_debug, "debug"},
{Opt_err_cont, "errors=continue"},
{Opt_err_panic, "errors=panic"},
{Opt_err_ro, "errors=remount-ro"},
{Opt_utf8_hack, "utf8"},
#ifdef CONFIG_STAGING_EXFAT_DISCARD
{Opt_discard, "discard"},
#endif /* CONFIG_STAGING_EXFAT_DISCARD */
{Opt_err, NULL}
};
static int parse_options(char *options, int silent, int *debug,
struct exfat_mount_options *opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
char *iocharset;
opts->fs_uid = current_uid();
opts->fs_gid = current_gid();
opts->fs_fmask = current->fs->umask;
opts->fs_dmask = current->fs->umask;
opts->allow_utime = U16_MAX;
opts->codepage = exfat_default_codepage;
opts->iocharset = exfat_default_iocharset;
opts->casesensitive = 0;
opts->errors = EXFAT_ERRORS_RO;
#ifdef CONFIG_STAGING_EXFAT_DISCARD
opts->discard = 0;
#endif
*debug = 0;
if (!options)
goto out;
while ((p = strsep(&options, ","))) {
int token;
if (!*p)
continue;
token = match_token(p, exfat_tokens, args);
switch (token) {
case Opt_uid:
if (match_int(&args[0], &option))
return 0;
opts->fs_uid = KUIDT_INIT(option);
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
opts->fs_gid = KGIDT_INIT(option);
break;
case Opt_umask:
case Opt_dmask:
case Opt_fmask:
if (match_octal(&args[0], &option))
return 0;
if (token != Opt_dmask)
opts->fs_fmask = option;
if (token != Opt_fmask)
opts->fs_dmask = option;
break;
case Opt_allow_utime:
if (match_octal(&args[0], &option))
return 0;
opts->allow_utime = option & 0022;
break;
case Opt_codepage:
if (match_int(&args[0], &option))
return 0;
opts->codepage = option;
break;
case Opt_charset:
if (opts->iocharset != exfat_default_iocharset)
kfree(opts->iocharset);
iocharset = match_strdup(&args[0]);
if (!iocharset)
return -ENOMEM;
opts->iocharset = iocharset;
break;
case Opt_namecase:
if (match_int(&args[0], &option))
return 0;
opts->casesensitive = option;
break;
case Opt_err_cont:
opts->errors = EXFAT_ERRORS_CONT;
break;
case Opt_err_panic:
opts->errors = EXFAT_ERRORS_PANIC;
break;
case Opt_err_ro:
opts->errors = EXFAT_ERRORS_RO;
break;
case Opt_debug:
*debug = 1;
break;
#ifdef CONFIG_STAGING_EXFAT_DISCARD
case Opt_discard:
opts->discard = 1;
break;
#endif /* CONFIG_STAGING_EXFAT_DISCARD */
case Opt_utf8_hack:
break;
default:
if (!silent)
pr_err("[EXFAT] Unrecognized mount option %s or missing value\n",
p);
return -EINVAL;
}
}
out:
if (opts->allow_utime == U16_MAX)
opts->allow_utime = ~opts->fs_dmask & 0022;
return 0;
}
static void exfat_hash_init(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
int i;
spin_lock_init(&sbi->inode_hash_lock);
for (i = 0; i < EXFAT_HASH_SIZE; i++)
INIT_HLIST_HEAD(&sbi->inode_hashtable[i]);
}
static int exfat_read_root(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct fs_info_t *p_fs = &sbi->fs_info;
struct timespec64 curtime;
struct dir_entry_t info;
EXFAT_I(inode)->fid.dir.dir = p_fs->root_dir;
EXFAT_I(inode)->fid.dir.flags = 0x01;
EXFAT_I(inode)->fid.entry = -1;
EXFAT_I(inode)->fid.start_clu = p_fs->root_dir;
EXFAT_I(inode)->fid.flags = 0x01;
EXFAT_I(inode)->fid.type = TYPE_DIR;
EXFAT_I(inode)->fid.rwoffset = 0;
EXFAT_I(inode)->fid.hint_last_off = -1;
EXFAT_I(inode)->target = NULL;
ffsReadStat(inode, &info);
inode->i_uid = sbi->options.fs_uid;
inode->i_gid = sbi->options.fs_gid;
INC_IVERSION(inode);
inode->i_generation = 0;
inode->i_mode = exfat_make_mode(sbi, ATTR_SUBDIR, 0777);
inode->i_op = &exfat_dir_inode_operations;
inode->i_fop = &exfat_dir_operations;
i_size_write(inode, info.Size);
inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1))
& ~((loff_t)p_fs->cluster_size - 1)) >> 9;
EXFAT_I(inode)->i_pos = ((loff_t)p_fs->root_dir << 32) | 0xffffffff;
EXFAT_I(inode)->mmu_private = i_size_read(inode);
exfat_save_attr(inode, ATTR_SUBDIR);
curtime = current_time(inode);
inode->i_mtime = curtime;
inode->i_atime = curtime;
inode->i_ctime = curtime;
set_nlink(inode, info.num_subdirs + 2);
return 0;
}
static void setup_dops(struct super_block *sb)
{
if (EXFAT_SB(sb)->options.casesensitive == 0)
sb->s_d_op = &exfat_ci_dentry_ops;
else
sb->s_d_op = &exfat_dentry_ops;
}
static int exfat_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *root_inode = NULL;
struct exfat_sb_info *sbi;
int debug, ret;
long error;
/*
* GFP_KERNEL is ok here, because while we do hold the
* supeblock lock, memory pressure can't call back into
* the filesystem, since we're only just about to mount
* it and have no inodes etc active!
*/
sbi = kvzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
mutex_init(&sbi->s_lock);
sb->s_fs_info = sbi;
sb->s_flags |= SB_NODIRATIME;
sb->s_magic = EXFAT_SUPER_MAGIC;
sb->s_op = &exfat_sops;
sb->s_export_op = &exfat_export_ops;
error = parse_options(data, silent, &debug, &sbi->options);
if (error)
goto out_fail;
setup_dops(sb);
error = -EIO;
sb_min_blocksize(sb, 512);
sb->s_maxbytes = 0x7fffffffffffffffLL; /* maximum file size */
ret = ffsMountVol(sb);
if (ret) {
if (!silent)
pr_err("[EXFAT] ffsMountVol failed\n");
goto out_fail;
}
/* set up enough so that it can read an inode */
exfat_hash_init(sb);
/*
* The low byte of FAT's first entry must have same value with
* media-field. But in real world, too many devices is
* writing wrong value. So, removed that validity check.
*
* if (FAT_FIRST_ENT(sb, media) != first)
*/
sbi->nls_io = load_nls(sbi->options.iocharset);
error = -ENOMEM;
root_inode = new_inode(sb);
if (!root_inode)
goto out_fail2;
root_inode->i_ino = EXFAT_ROOT_INO;
SET_IVERSION(root_inode, 1);
error = exfat_read_root(root_inode);
if (error < 0)
goto out_fail2;
error = -ENOMEM;
exfat_attach(root_inode, EXFAT_I(root_inode)->i_pos);
insert_inode_hash(root_inode);
sb->s_root = d_make_root(root_inode);
if (!sb->s_root) {
pr_err("[EXFAT] Getting the root inode failed\n");
goto out_fail2;
}
return 0;
out_fail2:
ffsUmountVol(sb);
out_fail:
if (root_inode)
iput(root_inode);
sb->s_fs_info = NULL;
exfat_free_super(sbi);
return error;
}
static struct dentry *exfat_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name,
void *data)
{
return mount_bdev(fs_type, flags, dev_name, data, exfat_fill_super);
}
static void init_once(void *foo)
{
struct exfat_inode_info *ei = (struct exfat_inode_info *)foo;
INIT_HLIST_NODE(&ei->i_hash_fat);
inode_init_once(&ei->vfs_inode);
}
static int __init exfat_init_inodecache(void)
{
exfat_inode_cachep = kmem_cache_create("exfat_inode_cache",
sizeof(struct exfat_inode_info),
0,
(SLAB_RECLAIM_ACCOUNT |
SLAB_MEM_SPREAD),
init_once);
if (!exfat_inode_cachep)
return -ENOMEM;
return 0;
}
static void __exit exfat_destroy_inodecache(void)
{
/*
* Make sure all delayed rcu free inodes are flushed before we
* destroy cache.
*/
rcu_barrier();
kmem_cache_destroy(exfat_inode_cachep);
}
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
static void exfat_debug_kill_sb(struct super_block *sb)
{
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct block_device *bdev = sb->s_bdev;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
long flags;
if (sbi) {
flags = sbi->debug_flags;
if (flags & EXFAT_DEBUGFLAGS_INVALID_UMOUNT) {
/*
* invalidate_bdev drops all device cache include
* dirty. We use this to simulate device removal.
*/
mutex_lock(&p_fs->v_mutex);
exfat_fat_release_all(sb);
exfat_buf_release_all(sb);
mutex_unlock(&p_fs->v_mutex);
invalidate_bdev(bdev);
}
}
kill_block_super(sb);
}
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
static struct file_system_type exfat_fs_type = {
.owner = THIS_MODULE,
.name = "exfat",
.mount = exfat_fs_mount,
#ifdef CONFIG_STAGING_EXFAT_KERNEL_DEBUG
.kill_sb = exfat_debug_kill_sb,
#else
.kill_sb = kill_block_super,
#endif /* CONFIG_STAGING_EXFAT_KERNEL_DEBUG */
.fs_flags = FS_REQUIRES_DEV,
};
static int __init init_exfat(void)
{
int err;
BUILD_BUG_ON(sizeof(struct dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct file_dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct strm_dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct name_dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct bmap_dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct case_dentry_t) != DENTRY_SIZE);
BUILD_BUG_ON(sizeof(struct volm_dentry_t) != DENTRY_SIZE);
pr_info("exFAT: Version %s\n", EXFAT_VERSION);
err = exfat_init_inodecache();
if (err)
return err;
err = register_filesystem(&exfat_fs_type);
if (err)
return err;
return 0;
}
static void __exit exit_exfat(void)
{
exfat_destroy_inodecache();
unregister_filesystem(&exfat_fs_type);
}
module_init(init_exfat);
module_exit(exit_exfat);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("exFAT Filesystem Driver");
MODULE_ALIAS_FS("exfat");
drivers/staging/exfat/exfat_upcase.c deleted 100644 → 0
View file @ 9a5e71a6
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*/
#include <linux/types.h>
#include "exfat.h"
const u8 uni_upcase[NUM_UPCASE << 1] = {
0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00,
0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00,
0x08, 0x00, 0x09, 0x00, 0x0A, 0x00, 0x0B, 0x00,
0x0C, 0x00, 0x0D, 0x00, 0x0E, 0x00, 0x0F, 0x00,
0x10, 0x00, 0x11, 0x00, 0x12, 0x00, 0x13, 0x00,
0x14, 0x00, 0x15, 0x00, 0x16, 0x00, 0x17, 0x00,
0x18, 0x00, 0x19, 0x00, 0x1A, 0x00, 0x1B, 0x00,
0x1C, 0x00, 0x1D, 0x00, 0x1E, 0x00, 0x1F, 0x00,
0x20, 0x00, 0x21, 0x00, 0x22, 0x00, 0x23, 0x00,
0x24, 0x00, 0x25, 0x00, 0x26, 0x00, 0x27, 0x00,
0x28, 0x00, 0x29, 0x00, 0x2A, 0x00, 0x2B, 0x00,
0x2C, 0x00, 0x2D, 0x00, 0x2E, 0x00, 0x2F, 0x00,
0x30, 0x00, 0x31, 0x00, 0x32, 0x00, 0x33, 0x00,
0x34, 0x00, 0x35, 0x00, 0x36, 0x00, 0x37, 0x00,
0x38, 0x00, 0x39, 0x00, 0x3A, 0x00, 0x3B, 0x00,
0x3C, 0x00, 0x3D, 0x00, 0x3E, 0x00, 0x3F, 0x00,
0x40, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00,
0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00,
0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00,
0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00,
0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00,
0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00,
0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x5B, 0x00,
0x5C, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x5F, 0x00,
0x60, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00,
0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00,
0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00,
0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00,
0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00,
0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00,
0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x7B, 0x00,
0x7C, 0x00, 0x7D, 0x00, 0x7E, 0x00, 0x7F, 0x00,
0x80, 0x00, 0x81, 0x00, 0x82, 0x00, 0x83, 0x00,
0x84, 0x00, 0x85, 0x00, 0x86, 0x00, 0x87, 0x00,
0x88, 0x00, 0x89, 0x00, 0x8A, 0x00, 0x8B, 0x00,
0x8C, 0x00, 0x8D, 0x00, 0x8E, 0x00, 0x8F, 0x00,
0x90, 0x00, 0x91, 0x00, 0x92, 0x00, 0x93, 0x00,
0x94, 0x00, 0x95, 0x00, 0x96, 0x00, 0x97, 0x00,
0x98, 0x00, 0x99, 0x00, 0x9A, 0x00, 0x9B, 0x00,
0x9C, 0x00, 0x9D, 0x00, 0x9E, 0x00, 0x9F, 0x00,
0xA0, 0x00, 0xA1, 0x00, 0xA2, 0x00, 0xA3, 0x00,
0xA4, 0x00, 0xA5, 0x00, 0xA6, 0x00, 0xA7, 0x00,
0xA8, 0x00, 0xA9, 0x00, 0xAA, 0x00, 0xAB, 0x00,
0xAC, 0x00, 0xAD, 0x00, 0xAE, 0x00, 0xAF, 0x00,
0xB0, 0x00, 0xB1, 0x00, 0xB2, 0x00, 0xB3, 0x00,
0xB4, 0x00, 0xB5, 0x00, 0xB6, 0x00, 0xB7, 0x00,
0xB8, 0x00, 0xB9, 0x00, 0xBA, 0x00, 0xBB, 0x00,
0xBC, 0x00, 0xBD, 0x00, 0xBE, 0x00, 0xBF, 0x00,
0xC0, 0x00, 0xC1, 0x00, 0xC2, 0x00, 0xC3, 0x00,
0xC4, 0x00, 0xC5, 0x00, 0xC6, 0x00, 0xC7, 0x00,
0xC8, 0x00, 0xC9, 0x00, 0xCA, 0x00, 0xCB, 0x00,
0xCC, 0x00, 0xCD, 0x00, 0xCE, 0x00, 0xCF, 0x00,
0xD0, 0x00, 0xD1, 0x00, 0xD2, 0x00, 0xD3, 0x00,
0xD4, 0x00, 0xD5, 0x00, 0xD6, 0x00, 0xD7, 0x00,
0xD8, 0x00, 0xD9, 0x00, 0xDA, 0x00, 0xDB, 0x00,
0xDC, 0x00, 0xDD, 0x00, 0xDE, 0x00, 0xDF, 0x00,
0xC0, 0x00, 0xC1, 0x00, 0xC2, 0x00, 0xC3, 0x00,
0xC4, 0x00, 0xC5, 0x00, 0xC6, 0x00, 0xC7, 0x00,
0xC8, 0x00, 0xC9, 0x00, 0xCA, 0x00, 0xCB, 0x00,
0xCC, 0x00, 0xCD, 0x00, 0xCE, 0x00, 0xCF, 0x00,
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0x84, 0x04, 0x85, 0x04, 0x86, 0x04, 0x87, 0x04,
0x88, 0x04, 0x89, 0x04, 0x8A, 0x04, 0x8A, 0x04,
0x8C, 0x04, 0x8C, 0x04, 0x8E, 0x04, 0x8E, 0x04,
0x90, 0x04, 0x90, 0x04, 0x92, 0x04, 0x92, 0x04,
0x94, 0x04, 0x94, 0x04, 0x96, 0x04, 0x96, 0x04,
0x98, 0x04, 0x98, 0x04, 0x9A, 0x04, 0x9A, 0x04,
0x9C, 0x04, 0x9C, 0x04, 0x9E, 0x04, 0x9E, 0x04,
0xA0, 0x04, 0xA0, 0x04, 0xA2, 0x04, 0xA2, 0x04,
0xA4, 0x04, 0xA4, 0x04, 0xA6, 0x04, 0xA6, 0x04,
0xA8, 0x04, 0xA8, 0x04, 0xAA, 0x04, 0xAA, 0x04,
0xAC, 0x04, 0xAC, 0x04, 0xAE, 0x04, 0xAE, 0x04,
0xB0, 0x04, 0xB0, 0x04, 0xB2, 0x04, 0xB2, 0x04,
0xB4, 0x04, 0xB4, 0x04, 0xB6, 0x04, 0xB6, 0x04,
0xB8, 0x04, 0xB8, 0x04, 0xBA, 0x04, 0xBA, 0x04,
0xBC, 0x04, 0xBC, 0x04, 0xBE, 0x04, 0xBE, 0x04,
0xC0, 0x04, 0xC1, 0x04, 0xC1, 0x04, 0xC3, 0x04,
0xC3, 0x04, 0xC5, 0x04, 0xC5, 0x04, 0xC7, 0x04,
0xC7, 0x04, 0xC9, 0x04, 0xC9, 0x04, 0xCB, 0x04,
0xCB, 0x04, 0xCD, 0x04, 0xCD, 0x04, 0xC0, 0x04,
0xD0, 0x04, 0xD0, 0x04, 0xD2, 0x04, 0xD2, 0x04,
0xD4, 0x04, 0xD4, 0x04, 0xD6, 0x04, 0xD6, 0x04,
0xD8, 0x04, 0xD8, 0x04, 0xDA, 0x04, 0xDA, 0x04,
0xDC, 0x04, 0xDC, 0x04, 0xDE, 0x04, 0xDE, 0x04,
0xE0, 0x04, 0xE0, 0x04, 0xE2, 0x04, 0xE2, 0x04,
0xE4, 0x04, 0xE4, 0x04, 0xE6, 0x04, 0xE6, 0x04,
0xE8, 0x04, 0xE8, 0x04, 0xEA, 0x04, 0xEA, 0x04,
0xEC, 0x04, 0xEC, 0x04, 0xEE, 0x04, 0xEE, 0x04,
0xF0, 0x04, 0xF0, 0x04, 0xF2, 0x04, 0xF2, 0x04,
0xF4, 0x04, 0xF4, 0x04, 0xF6, 0x04, 0xF6, 0x04,
0xF8, 0x04, 0xF8, 0x04, 0xFA, 0x04, 0xFA, 0x04,
0xFC, 0x04, 0xFC, 0x04, 0xFE, 0x04, 0xFE, 0x04,
0x00, 0x05, 0x00, 0x05, 0x02, 0x05, 0x02, 0x05,
0x04, 0x05, 0x04, 0x05, 0x06, 0x05, 0x06, 0x05,
0x08, 0x05, 0x08, 0x05, 0x0A, 0x05, 0x0A, 0x05,
0x0C, 0x05, 0x0C, 0x05, 0x0E, 0x05, 0x0E, 0x05,
0x10, 0x05, 0x10, 0x05, 0x12, 0x05, 0x12, 0x05,
0x14, 0x05, 0x15, 0x05, 0x16, 0x05, 0x17, 0x05,
0x18, 0x05, 0x19, 0x05, 0x1A, 0x05, 0x1B, 0x05,
0x1C, 0x05, 0x1D, 0x05, 0x1E, 0x05, 0x1F, 0x05,
0x20, 0x05, 0x21, 0x05, 0x22, 0x05, 0x23, 0x05,
0x24, 0x05, 0x25, 0x05, 0x26, 0x05, 0x27, 0x05,
0x28, 0x05, 0x29, 0x05, 0x2A, 0x05, 0x2B, 0x05,
0x2C, 0x05, 0x2D, 0x05, 0x2E, 0x05, 0x2F, 0x05,
0x30, 0x05, 0x31, 0x05, 0x32, 0x05, 0x33, 0x05,
0x34, 0x05, 0x35, 0x05, 0x36, 0x05, 0x37, 0x05,
0x38, 0x05, 0x39, 0x05, 0x3A, 0x05, 0x3B, 0x05,
0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05,
0x40, 0x05, 0x41, 0x05, 0x42, 0x05, 0x43, 0x05,
0x44, 0x05, 0x45, 0x05, 0x46, 0x05, 0x47, 0x05,
0x48, 0x05, 0x49, 0x05, 0x4A, 0x05, 0x4B, 0x05,
0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05,
0x50, 0x05, 0x51, 0x05, 0x52, 0x05, 0x53, 0x05,
0x54, 0x05, 0x55, 0x05, 0x56, 0x05, 0x57, 0x05,
0x58, 0x05, 0x59, 0x05, 0x5A, 0x05, 0x5B, 0x05,
0x5C, 0x05, 0x5D, 0x05, 0x5E, 0x05, 0x5F, 0x05,
0x60, 0x05, 0x31, 0x05, 0x32, 0x05, 0x33, 0x05,
0x34, 0x05, 0x35, 0x05, 0x36, 0x05, 0x37, 0x05,
0x38, 0x05, 0x39, 0x05, 0x3A, 0x05, 0x3B, 0x05,
0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05,
0x40, 0x05, 0x41, 0x05, 0x42, 0x05, 0x43, 0x05,
0x44, 0x05, 0x45, 0x05, 0x46, 0x05, 0x47, 0x05,
0x48, 0x05, 0x49, 0x05, 0x4A, 0x05, 0x4B, 0x05,
0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05,
0x50, 0x05, 0x51, 0x05, 0x52, 0x05, 0x53, 0x05,
0x54, 0x05, 0x55, 0x05, 0x56, 0x05, 0xFF, 0xFF,
0xF6, 0x17, 0x63, 0x2C, 0x7E, 0x1D, 0x7F, 0x1D,
0x80, 0x1D, 0x81, 0x1D, 0x82, 0x1D, 0x83, 0x1D,
0x84, 0x1D, 0x85, 0x1D, 0x86, 0x1D, 0x87, 0x1D,
0x88, 0x1D, 0x89, 0x1D, 0x8A, 0x1D, 0x8B, 0x1D,
0x8C, 0x1D, 0x8D, 0x1D, 0x8E, 0x1D, 0x8F, 0x1D,
0x90, 0x1D, 0x91, 0x1D, 0x92, 0x1D, 0x93, 0x1D,
0x94, 0x1D, 0x95, 0x1D, 0x96, 0x1D, 0x97, 0x1D,
0x98, 0x1D, 0x99, 0x1D, 0x9A, 0x1D, 0x9B, 0x1D,
0x9C, 0x1D, 0x9D, 0x1D, 0x9E, 0x1D, 0x9F, 0x1D,
0xA0, 0x1D, 0xA1, 0x1D, 0xA2, 0x1D, 0xA3, 0x1D,
0xA4, 0x1D, 0xA5, 0x1D, 0xA6, 0x1D, 0xA7, 0x1D,
0xA8, 0x1D, 0xA9, 0x1D, 0xAA, 0x1D, 0xAB, 0x1D,
0xAC, 0x1D, 0xAD, 0x1D, 0xAE, 0x1D, 0xAF, 0x1D,
0xB0, 0x1D, 0xB1, 0x1D, 0xB2, 0x1D, 0xB3, 0x1D,
0xB4, 0x1D, 0xB5, 0x1D, 0xB6, 0x1D, 0xB7, 0x1D,
0xB8, 0x1D, 0xB9, 0x1D, 0xBA, 0x1D, 0xBB, 0x1D,
0xBC, 0x1D, 0xBD, 0x1D, 0xBE, 0x1D, 0xBF, 0x1D,
0xC0, 0x1D, 0xC1, 0x1D, 0xC2, 0x1D, 0xC3, 0x1D,
0xC4, 0x1D, 0xC5, 0x1D, 0xC6, 0x1D, 0xC7, 0x1D,
0xC8, 0x1D, 0xC9, 0x1D, 0xCA, 0x1D, 0xCB, 0x1D,
0xCC, 0x1D, 0xCD, 0x1D, 0xCE, 0x1D, 0xCF, 0x1D,
0xD0, 0x1D, 0xD1, 0x1D, 0xD2, 0x1D, 0xD3, 0x1D,
0xD4, 0x1D, 0xD5, 0x1D, 0xD6, 0x1D, 0xD7, 0x1D,
0xD8, 0x1D, 0xD9, 0x1D, 0xDA, 0x1D, 0xDB, 0x1D,
0xDC, 0x1D, 0xDD, 0x1D, 0xDE, 0x1D, 0xDF, 0x1D,
0xE0, 0x1D, 0xE1, 0x1D, 0xE2, 0x1D, 0xE3, 0x1D,
0xE4, 0x1D, 0xE5, 0x1D, 0xE6, 0x1D, 0xE7, 0x1D,
0xE8, 0x1D, 0xE9, 0x1D, 0xEA, 0x1D, 0xEB, 0x1D,
0xEC, 0x1D, 0xED, 0x1D, 0xEE, 0x1D, 0xEF, 0x1D,
0xF0, 0x1D, 0xF1, 0x1D, 0xF2, 0x1D, 0xF3, 0x1D,
0xF4, 0x1D, 0xF5, 0x1D, 0xF6, 0x1D, 0xF7, 0x1D,
0xF8, 0x1D, 0xF9, 0x1D, 0xFA, 0x1D, 0xFB, 0x1D,
0xFC, 0x1D, 0xFD, 0x1D, 0xFE, 0x1D, 0xFF, 0x1D,
0x00, 0x1E, 0x00, 0x1E, 0x02, 0x1E, 0x02, 0x1E,
0x04, 0x1E, 0x04, 0x1E, 0x06, 0x1E, 0x06, 0x1E,
0x08, 0x1E, 0x08, 0x1E, 0x0A, 0x1E, 0x0A, 0x1E,
0x0C, 0x1E, 0x0C, 0x1E, 0x0E, 0x1E, 0x0E, 0x1E,
0x10, 0x1E, 0x10, 0x1E, 0x12, 0x1E, 0x12, 0x1E,
0x14, 0x1E, 0x14, 0x1E, 0x16, 0x1E, 0x16, 0x1E,
0x18, 0x1E, 0x18, 0x1E, 0x1A, 0x1E, 0x1A, 0x1E,
0x1C, 0x1E, 0x1C, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E,
0x20, 0x1E, 0x20, 0x1E, 0x22, 0x1E, 0x22, 0x1E,
0x24, 0x1E, 0x24, 0x1E, 0x26, 0x1E, 0x26, 0x1E,
0x28, 0x1E, 0x28, 0x1E, 0x2A, 0x1E, 0x2A, 0x1E,
0x2C, 0x1E, 0x2C, 0x1E, 0x2E, 0x1E, 0x2E, 0x1E,
0x30, 0x1E, 0x30, 0x1E, 0x32, 0x1E, 0x32, 0x1E,
0x34, 0x1E, 0x34, 0x1E, 0x36, 0x1E, 0x36, 0x1E,
0x38, 0x1E, 0x38, 0x1E, 0x3A, 0x1E, 0x3A, 0x1E,
0x3C, 0x1E, 0x3C, 0x1E, 0x3E, 0x1E, 0x3E, 0x1E,
0x40, 0x1E, 0x40, 0x1E, 0x42, 0x1E, 0x42, 0x1E,
0x44, 0x1E, 0x44, 0x1E, 0x46, 0x1E, 0x46, 0x1E,
0x48, 0x1E, 0x48, 0x1E, 0x4A, 0x1E, 0x4A, 0x1E,
0x4C, 0x1E, 0x4C, 0x1E, 0x4E, 0x1E, 0x4E, 0x1E,
0x50, 0x1E, 0x50, 0x1E, 0x52, 0x1E, 0x52, 0x1E,
0x54, 0x1E, 0x54, 0x1E, 0x56, 0x1E, 0x56, 0x1E,
0x58, 0x1E, 0x58, 0x1E, 0x5A, 0x1E, 0x5A, 0x1E,
0x5C, 0x1E, 0x5C, 0x1E, 0x5E, 0x1E, 0x5E, 0x1E,
0x60, 0x1E, 0x60, 0x1E, 0x62, 0x1E, 0x62, 0x1E,
0x64, 0x1E, 0x64, 0x1E, 0x66, 0x1E, 0x66, 0x1E,
0x68, 0x1E, 0x68, 0x1E, 0x6A, 0x1E, 0x6A, 0x1E,
0x6C, 0x1E, 0x6C, 0x1E, 0x6E, 0x1E, 0x6E, 0x1E,
0x70, 0x1E, 0x70, 0x1E, 0x72, 0x1E, 0x72, 0x1E,
0x74, 0x1E, 0x74, 0x1E, 0x76, 0x1E, 0x76, 0x1E,
0x78, 0x1E, 0x78, 0x1E, 0x7A, 0x1E, 0x7A, 0x1E,
0x7C, 0x1E, 0x7C, 0x1E, 0x7E, 0x1E, 0x7E, 0x1E,
0x80, 0x1E, 0x80, 0x1E, 0x82, 0x1E, 0x82, 0x1E,
0x84, 0x1E, 0x84, 0x1E, 0x86, 0x1E, 0x86, 0x1E,
0x88, 0x1E, 0x88, 0x1E, 0x8A, 0x1E, 0x8A, 0x1E,
0x8C, 0x1E, 0x8C, 0x1E, 0x8E, 0x1E, 0x8E, 0x1E,
0x90, 0x1E, 0x90, 0x1E, 0x92, 0x1E, 0x92, 0x1E,
0x94, 0x1E, 0x94, 0x1E, 0x96, 0x1E, 0x97, 0x1E,
0x98, 0x1E, 0x99, 0x1E, 0x9A, 0x1E, 0x9B, 0x1E,
0x9C, 0x1E, 0x9D, 0x1E, 0x9E, 0x1E, 0x9F, 0x1E,
0xA0, 0x1E, 0xA0, 0x1E, 0xA2, 0x1E, 0xA2, 0x1E,
0xA4, 0x1E, 0xA4, 0x1E, 0xA6, 0x1E, 0xA6, 0x1E,
0xA8, 0x1E, 0xA8, 0x1E, 0xAA, 0x1E, 0xAA, 0x1E,
0xAC, 0x1E, 0xAC, 0x1E, 0xAE, 0x1E, 0xAE, 0x1E,
0xB0, 0x1E, 0xB0, 0x1E, 0xB2, 0x1E, 0xB2, 0x1E,
0xB4, 0x1E, 0xB4, 0x1E, 0xB6, 0x1E, 0xB6, 0x1E,
0xB8, 0x1E, 0xB8, 0x1E, 0xBA, 0x1E, 0xBA, 0x1E,
0xBC, 0x1E, 0xBC, 0x1E, 0xBE, 0x1E, 0xBE, 0x1E,
0xC0, 0x1E, 0xC0, 0x1E, 0xC2, 0x1E, 0xC2, 0x1E,
0xC4, 0x1E, 0xC4, 0x1E, 0xC6, 0x1E, 0xC6, 0x1E,
0xC8, 0x1E, 0xC8, 0x1E, 0xCA, 0x1E, 0xCA, 0x1E,
0xCC, 0x1E, 0xCC, 0x1E, 0xCE, 0x1E, 0xCE, 0x1E,
0xD0, 0x1E, 0xD0, 0x1E, 0xD2, 0x1E, 0xD2, 0x1E,
0xD4, 0x1E, 0xD4, 0x1E, 0xD6, 0x1E, 0xD6, 0x1E,
0xD8, 0x1E, 0xD8, 0x1E, 0xDA, 0x1E, 0xDA, 0x1E,
0xDC, 0x1E, 0xDC, 0x1E, 0xDE, 0x1E, 0xDE, 0x1E,
0xE0, 0x1E, 0xE0, 0x1E, 0xE2, 0x1E, 0xE2, 0x1E,
0xE4, 0x1E, 0xE4, 0x1E, 0xE6, 0x1E, 0xE6, 0x1E,
0xE8, 0x1E, 0xE8, 0x1E, 0xEA, 0x1E, 0xEA, 0x1E,
0xEC, 0x1E, 0xEC, 0x1E, 0xEE, 0x1E, 0xEE, 0x1E,
0xF0, 0x1E, 0xF0, 0x1E, 0xF2, 0x1E, 0xF2, 0x1E,
0xF4, 0x1E, 0xF4, 0x1E, 0xF6, 0x1E, 0xF6, 0x1E,
0xF8, 0x1E, 0xF8, 0x1E, 0xFA, 0x1E, 0xFB, 0x1E,
0xFC, 0x1E, 0xFD, 0x1E, 0xFE, 0x1E, 0xFF, 0x1E,
0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F,
0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F,
0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F,
0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F,
0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F,
0x1C, 0x1F, 0x1D, 0x1F, 0x16, 0x1F, 0x17, 0x1F,
0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F,
0x1C, 0x1F, 0x1D, 0x1F, 0x1E, 0x1F, 0x1F, 0x1F,
0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F,
0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F,
0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F,
0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F,
0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F,
0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F,
0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F,
0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F,
0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F,
0x4C, 0x1F, 0x4D, 0x1F, 0x46, 0x1F, 0x47, 0x1F,
0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F,
0x4C, 0x1F, 0x4D, 0x1F, 0x4E, 0x1F, 0x4F, 0x1F,
0x50, 0x1F, 0x59, 0x1F, 0x52, 0x1F, 0x5B, 0x1F,
0x54, 0x1F, 0x5D, 0x1F, 0x56, 0x1F, 0x5F, 0x1F,
0x58, 0x1F, 0x59, 0x1F, 0x5A, 0x1F, 0x5B, 0x1F,
0x5C, 0x1F, 0x5D, 0x1F, 0x5E, 0x1F, 0x5F, 0x1F,
0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F,
0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F,
0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F,
0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F,
0xBA, 0x1F, 0xBB, 0x1F, 0xC8, 0x1F, 0xC9, 0x1F,
0xCA, 0x1F, 0xCB, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F,
0xF8, 0x1F, 0xF9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F,
0xFA, 0x1F, 0xFB, 0x1F, 0x7E, 0x1F, 0x7F, 0x1F,
0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F,
0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F,
0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F,
0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F,
0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F,
0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F,
0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F,
0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F,
0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F,
0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F,
0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F,
0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F,
0xB8, 0x1F, 0xB9, 0x1F, 0xB2, 0x1F, 0xBC, 0x1F,
0xB4, 0x1F, 0xB5, 0x1F, 0xB6, 0x1F, 0xB7, 0x1F,
0xB8, 0x1F, 0xB9, 0x1F, 0xBA, 0x1F, 0xBB, 0x1F,
0xBC, 0x1F, 0xBD, 0x1F, 0xBE, 0x1F, 0xBF, 0x1F,
0xC0, 0x1F, 0xC1, 0x1F, 0xC2, 0x1F, 0xC3, 0x1F,
0xC4, 0x1F, 0xC5, 0x1F, 0xC6, 0x1F, 0xC7, 0x1F,
0xC8, 0x1F, 0xC9, 0x1F, 0xCA, 0x1F, 0xCB, 0x1F,
0xC3, 0x1F, 0xCD, 0x1F, 0xCE, 0x1F, 0xCF, 0x1F,
0xD8, 0x1F, 0xD9, 0x1F, 0xD2, 0x1F, 0xD3, 0x1F,
0xD4, 0x1F, 0xD5, 0x1F, 0xD6, 0x1F, 0xD7, 0x1F,
0xD8, 0x1F, 0xD9, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F,
0xDC, 0x1F, 0xDD, 0x1F, 0xDE, 0x1F, 0xDF, 0x1F,
0xE8, 0x1F, 0xE9, 0x1F, 0xE2, 0x1F, 0xE3, 0x1F,
0xE4, 0x1F, 0xEC, 0x1F, 0xE6, 0x1F, 0xE7, 0x1F,
0xE8, 0x1F, 0xE9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F,
0xEC, 0x1F, 0xED, 0x1F, 0xEE, 0x1F, 0xEF, 0x1F,
0xF0, 0x1F, 0xF1, 0x1F, 0xF2, 0x1F, 0xF3, 0x1F,
0xF4, 0x1F, 0xF5, 0x1F, 0xF6, 0x1F, 0xF7, 0x1F,
0xF8, 0x1F, 0xF9, 0x1F, 0xFA, 0x1F, 0xFB, 0x1F,
0xF3, 0x1F, 0xFD, 0x1F, 0xFE, 0x1F, 0xFF, 0x1F,
0x00, 0x20, 0x01, 0x20, 0x02, 0x20, 0x03, 0x20,
0x04, 0x20, 0x05, 0x20, 0x06, 0x20, 0x07, 0x20,
0x08, 0x20, 0x09, 0x20, 0x0A, 0x20, 0x0B, 0x20,
0x0C, 0x20, 0x0D, 0x20, 0x0E, 0x20, 0x0F, 0x20,
0x10, 0x20, 0x11, 0x20, 0x12, 0x20, 0x13, 0x20,
0x14, 0x20, 0x15, 0x20, 0x16, 0x20, 0x17, 0x20,
0x18, 0x20, 0x19, 0x20, 0x1A, 0x20, 0x1B, 0x20,
0x1C, 0x20, 0x1D, 0x20, 0x1E, 0x20, 0x1F, 0x20,
0x20, 0x20, 0x21, 0x20, 0x22, 0x20, 0x23, 0x20,
0x24, 0x20, 0x25, 0x20, 0x26, 0x20, 0x27, 0x20,
0x28, 0x20, 0x29, 0x20, 0x2A, 0x20, 0x2B, 0x20,
0x2C, 0x20, 0x2D, 0x20, 0x2E, 0x20, 0x2F, 0x20,
0x30, 0x20, 0x31, 0x20, 0x32, 0x20, 0x33, 0x20,
0x34, 0x20, 0x35, 0x20, 0x36, 0x20, 0x37, 0x20,
0x38, 0x20, 0x39, 0x20, 0x3A, 0x20, 0x3B, 0x20,
0x3C, 0x20, 0x3D, 0x20, 0x3E, 0x20, 0x3F, 0x20,
0x40, 0x20, 0x41, 0x20, 0x42, 0x20, 0x43, 0x20,
0x44, 0x20, 0x45, 0x20, 0x46, 0x20, 0x47, 0x20,
0x48, 0x20, 0x49, 0x20, 0x4A, 0x20, 0x4B, 0x20,
0x4C, 0x20, 0x4D, 0x20, 0x4E, 0x20, 0x4F, 0x20,
0x50, 0x20, 0x51, 0x20, 0x52, 0x20, 0x53, 0x20,
0x54, 0x20, 0x55, 0x20, 0x56, 0x20, 0x57, 0x20,
0x58, 0x20, 0x59, 0x20, 0x5A, 0x20, 0x5B, 0x20,
0x5C, 0x20, 0x5D, 0x20, 0x5E, 0x20, 0x5F, 0x20,
0x60, 0x20, 0x61, 0x20, 0x62, 0x20, 0x63, 0x20,
0x64, 0x20, 0x65, 0x20, 0x66, 0x20, 0x67, 0x20,
0x68, 0x20, 0x69, 0x20, 0x6A, 0x20, 0x6B, 0x20,
0x6C, 0x20, 0x6D, 0x20, 0x6E, 0x20, 0x6F, 0x20,
0x70, 0x20, 0x71, 0x20, 0x72, 0x20, 0x73, 0x20,
0x74, 0x20, 0x75, 0x20, 0x76, 0x20, 0x77, 0x20,
0x78, 0x20, 0x79, 0x20, 0x7A, 0x20, 0x7B, 0x20,
0x7C, 0x20, 0x7D, 0x20, 0x7E, 0x20, 0x7F, 0x20,
0x80, 0x20, 0x81, 0x20, 0x82, 0x20, 0x83, 0x20,
0x84, 0x20, 0x85, 0x20, 0x86, 0x20, 0x87, 0x20,
0x88, 0x20, 0x89, 0x20, 0x8A, 0x20, 0x8B, 0x20,
0x8C, 0x20, 0x8D, 0x20, 0x8E, 0x20, 0x8F, 0x20,
0x90, 0x20, 0x91, 0x20, 0x92, 0x20, 0x93, 0x20,
0x94, 0x20, 0x95, 0x20, 0x96, 0x20, 0x97, 0x20,
0x98, 0x20, 0x99, 0x20, 0x9A, 0x20, 0x9B, 0x20,
0x9C, 0x20, 0x9D, 0x20, 0x9E, 0x20, 0x9F, 0x20,
0xA0, 0x20, 0xA1, 0x20, 0xA2, 0x20, 0xA3, 0x20,
0xA4, 0x20, 0xA5, 0x20, 0xA6, 0x20, 0xA7, 0x20,
0xA8, 0x20, 0xA9, 0x20, 0xAA, 0x20, 0xAB, 0x20,
0xAC, 0x20, 0xAD, 0x20, 0xAE, 0x20, 0xAF, 0x20,
0xB0, 0x20, 0xB1, 0x20, 0xB2, 0x20, 0xB3, 0x20,
0xB4, 0x20, 0xB5, 0x20, 0xB6, 0x20, 0xB7, 0x20,
0xB8, 0x20, 0xB9, 0x20, 0xBA, 0x20, 0xBB, 0x20,
0xBC, 0x20, 0xBD, 0x20, 0xBE, 0x20, 0xBF, 0x20,
0xC0, 0x20, 0xC1, 0x20, 0xC2, 0x20, 0xC3, 0x20,
0xC4, 0x20, 0xC5, 0x20, 0xC6, 0x20, 0xC7, 0x20,
0xC8, 0x20, 0xC9, 0x20, 0xCA, 0x20, 0xCB, 0x20,
0xCC, 0x20, 0xCD, 0x20, 0xCE, 0x20, 0xCF, 0x20,
0xD0, 0x20, 0xD1, 0x20, 0xD2, 0x20, 0xD3, 0x20,
0xD4, 0x20, 0xD5, 0x20, 0xD6, 0x20, 0xD7, 0x20,
0xD8, 0x20, 0xD9, 0x20, 0xDA, 0x20, 0xDB, 0x20,
0xDC, 0x20, 0xDD, 0x20, 0xDE, 0x20, 0xDF, 0x20,
0xE0, 0x20, 0xE1, 0x20, 0xE2, 0x20, 0xE3, 0x20,
0xE4, 0x20, 0xE5, 0x20, 0xE6, 0x20, 0xE7, 0x20,
0xE8, 0x20, 0xE9, 0x20, 0xEA, 0x20, 0xEB, 0x20,
0xEC, 0x20, 0xED, 0x20, 0xEE, 0x20, 0xEF, 0x20,
0xF0, 0x20, 0xF1, 0x20, 0xF2, 0x20, 0xF3, 0x20,
0xF4, 0x20, 0xF5, 0x20, 0xF6, 0x20, 0xF7, 0x20,
0xF8, 0x20, 0xF9, 0x20, 0xFA, 0x20, 0xFB, 0x20,
0xFC, 0x20, 0xFD, 0x20, 0xFE, 0x20, 0xFF, 0x20,
0x00, 0x21, 0x01, 0x21, 0x02, 0x21, 0x03, 0x21,
0x04, 0x21, 0x05, 0x21, 0x06, 0x21, 0x07, 0x21,
0x08, 0x21, 0x09, 0x21, 0x0A, 0x21, 0x0B, 0x21,
0x0C, 0x21, 0x0D, 0x21, 0x0E, 0x21, 0x0F, 0x21,
0x10, 0x21, 0x11, 0x21, 0x12, 0x21, 0x13, 0x21,
0x14, 0x21, 0x15, 0x21, 0x16, 0x21, 0x17, 0x21,
0x18, 0x21, 0x19, 0x21, 0x1A, 0x21, 0x1B, 0x21,
0x1C, 0x21, 0x1D, 0x21, 0x1E, 0x21, 0x1F, 0x21,
0x20, 0x21, 0x21, 0x21, 0x22, 0x21, 0x23, 0x21,
0x24, 0x21, 0x25, 0x21, 0x26, 0x21, 0x27, 0x21,
0x28, 0x21, 0x29, 0x21, 0x2A, 0x21, 0x2B, 0x21,
0x2C, 0x21, 0x2D, 0x21, 0x2E, 0x21, 0x2F, 0x21,
0x30, 0x21, 0x31, 0x21, 0x32, 0x21, 0x33, 0x21,
0x34, 0x21, 0x35, 0x21, 0x36, 0x21, 0x37, 0x21,
0x38, 0x21, 0x39, 0x21, 0x3A, 0x21, 0x3B, 0x21,
0x3C, 0x21, 0x3D, 0x21, 0x3E, 0x21, 0x3F, 0x21,
0x40, 0x21, 0x41, 0x21, 0x42, 0x21, 0x43, 0x21,
0x44, 0x21, 0x45, 0x21, 0x46, 0x21, 0x47, 0x21,
0x48, 0x21, 0x49, 0x21, 0x4A, 0x21, 0x4B, 0x21,
0x4C, 0x21, 0x4D, 0x21, 0x32, 0x21, 0x4F, 0x21,
0x50, 0x21, 0x51, 0x21, 0x52, 0x21, 0x53, 0x21,
0x54, 0x21, 0x55, 0x21, 0x56, 0x21, 0x57, 0x21,
0x58, 0x21, 0x59, 0x21, 0x5A, 0x21, 0x5B, 0x21,
0x5C, 0x21, 0x5D, 0x21, 0x5E, 0x21, 0x5F, 0x21,
0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21,
0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21,
0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21,
0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21,
0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21,
0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21,
0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21,
0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21,
0x80, 0x21, 0x81, 0x21, 0x82, 0x21, 0x83, 0x21,
0x83, 0x21, 0xFF, 0xFF, 0x4B, 0x03, 0xB6, 0x24,
0xB7, 0x24, 0xB8, 0x24, 0xB9, 0x24, 0xBA, 0x24,
0xBB, 0x24, 0xBC, 0x24, 0xBD, 0x24, 0xBE, 0x24,
0xBF, 0x24, 0xC0, 0x24, 0xC1, 0x24, 0xC2, 0x24,
0xC3, 0x24, 0xC4, 0x24, 0xC5, 0x24, 0xC6, 0x24,
0xC7, 0x24, 0xC8, 0x24, 0xC9, 0x24, 0xCA, 0x24,
0xCB, 0x24, 0xCC, 0x24, 0xCD, 0x24, 0xCE, 0x24,
0xCF, 0x24, 0xFF, 0xFF, 0x46, 0x07, 0x00, 0x2C,
0x01, 0x2C, 0x02, 0x2C, 0x03, 0x2C, 0x04, 0x2C,
0x05, 0x2C, 0x06, 0x2C, 0x07, 0x2C, 0x08, 0x2C,
0x09, 0x2C, 0x0A, 0x2C, 0x0B, 0x2C, 0x0C, 0x2C,
0x0D, 0x2C, 0x0E, 0x2C, 0x0F, 0x2C, 0x10, 0x2C,
0x11, 0x2C, 0x12, 0x2C, 0x13, 0x2C, 0x14, 0x2C,
0x15, 0x2C, 0x16, 0x2C, 0x17, 0x2C, 0x18, 0x2C,
0x19, 0x2C, 0x1A, 0x2C, 0x1B, 0x2C, 0x1C, 0x2C,
0x1D, 0x2C, 0x1E, 0x2C, 0x1F, 0x2C, 0x20, 0x2C,
0x21, 0x2C, 0x22, 0x2C, 0x23, 0x2C, 0x24, 0x2C,
0x25, 0x2C, 0x26, 0x2C, 0x27, 0x2C, 0x28, 0x2C,
0x29, 0x2C, 0x2A, 0x2C, 0x2B, 0x2C, 0x2C, 0x2C,
0x2D, 0x2C, 0x2E, 0x2C, 0x5F, 0x2C, 0x60, 0x2C,
0x60, 0x2C, 0x62, 0x2C, 0x63, 0x2C, 0x64, 0x2C,
0x65, 0x2C, 0x66, 0x2C, 0x67, 0x2C, 0x67, 0x2C,
0x69, 0x2C, 0x69, 0x2C, 0x6B, 0x2C, 0x6B, 0x2C,
0x6D, 0x2C, 0x6E, 0x2C, 0x6F, 0x2C, 0x70, 0x2C,
0x71, 0x2C, 0x72, 0x2C, 0x73, 0x2C, 0x74, 0x2C,
0x75, 0x2C, 0x75, 0x2C, 0x77, 0x2C, 0x78, 0x2C,
0x79, 0x2C, 0x7A, 0x2C, 0x7B, 0x2C, 0x7C, 0x2C,
0x7D, 0x2C, 0x7E, 0x2C, 0x7F, 0x2C, 0x80, 0x2C,
0x80, 0x2C, 0x82, 0x2C, 0x82, 0x2C, 0x84, 0x2C,
0x84, 0x2C, 0x86, 0x2C, 0x86, 0x2C, 0x88, 0x2C,
0x88, 0x2C, 0x8A, 0x2C, 0x8A, 0x2C, 0x8C, 0x2C,
0x8C, 0x2C, 0x8E, 0x2C, 0x8E, 0x2C, 0x90, 0x2C,
0x90, 0x2C, 0x92, 0x2C, 0x92, 0x2C, 0x94, 0x2C,
0x94, 0x2C, 0x96, 0x2C, 0x96, 0x2C, 0x98, 0x2C,
0x98, 0x2C, 0x9A, 0x2C, 0x9A, 0x2C, 0x9C, 0x2C,
0x9C, 0x2C, 0x9E, 0x2C, 0x9E, 0x2C, 0xA0, 0x2C,
0xA0, 0x2C, 0xA2, 0x2C, 0xA2, 0x2C, 0xA4, 0x2C,
0xA4, 0x2C, 0xA6, 0x2C, 0xA6, 0x2C, 0xA8, 0x2C,
0xA8, 0x2C, 0xAA, 0x2C, 0xAA, 0x2C, 0xAC, 0x2C,
0xAC, 0x2C, 0xAE, 0x2C, 0xAE, 0x2C, 0xB0, 0x2C,
0xB0, 0x2C, 0xB2, 0x2C, 0xB2, 0x2C, 0xB4, 0x2C,
0xB4, 0x2C, 0xB6, 0x2C, 0xB6, 0x2C, 0xB8, 0x2C,
0xB8, 0x2C, 0xBA, 0x2C, 0xBA, 0x2C, 0xBC, 0x2C,
0xBC, 0x2C, 0xBE, 0x2C, 0xBE, 0x2C, 0xC0, 0x2C,
0xC0, 0x2C, 0xC2, 0x2C, 0xC2, 0x2C, 0xC4, 0x2C,
0xC4, 0x2C, 0xC6, 0x2C, 0xC6, 0x2C, 0xC8, 0x2C,
0xC8, 0x2C, 0xCA, 0x2C, 0xCA, 0x2C, 0xCC, 0x2C,
0xCC, 0x2C, 0xCE, 0x2C, 0xCE, 0x2C, 0xD0, 0x2C,
0xD0, 0x2C, 0xD2, 0x2C, 0xD2, 0x2C, 0xD4, 0x2C,
0xD4, 0x2C, 0xD6, 0x2C, 0xD6, 0x2C, 0xD8, 0x2C,
0xD8, 0x2C, 0xDA, 0x2C, 0xDA, 0x2C, 0xDC, 0x2C,
0xDC, 0x2C, 0xDE, 0x2C, 0xDE, 0x2C, 0xE0, 0x2C,
0xE0, 0x2C, 0xE2, 0x2C, 0xE2, 0x2C, 0xE4, 0x2C,
0xE5, 0x2C, 0xE6, 0x2C, 0xE7, 0x2C, 0xE8, 0x2C,
0xE9, 0x2C, 0xEA, 0x2C, 0xEB, 0x2C, 0xEC, 0x2C,
0xED, 0x2C, 0xEE, 0x2C, 0xEF, 0x2C, 0xF0, 0x2C,
0xF1, 0x2C, 0xF2, 0x2C, 0xF3, 0x2C, 0xF4, 0x2C,
0xF5, 0x2C, 0xF6, 0x2C, 0xF7, 0x2C, 0xF8, 0x2C,
0xF9, 0x2C, 0xFA, 0x2C, 0xFB, 0x2C, 0xFC, 0x2C,
0xFD, 0x2C, 0xFE, 0x2C, 0xFF, 0x2C, 0xA0, 0x10,
0xA1, 0x10, 0xA2, 0x10, 0xA3, 0x10, 0xA4, 0x10,
0xA5, 0x10, 0xA6, 0x10, 0xA7, 0x10, 0xA8, 0x10,
0xA9, 0x10, 0xAA, 0x10, 0xAB, 0x10, 0xAC, 0x10,
0xAD, 0x10, 0xAE, 0x10, 0xAF, 0x10, 0xB0, 0x10,
0xB1, 0x10, 0xB2, 0x10, 0xB3, 0x10, 0xB4, 0x10,
0xB5, 0x10, 0xB6, 0x10, 0xB7, 0x10, 0xB8, 0x10,
0xB9, 0x10, 0xBA, 0x10, 0xBB, 0x10, 0xBC, 0x10,
0xBD, 0x10, 0xBE, 0x10, 0xBF, 0x10, 0xC0, 0x10,
0xC1, 0x10, 0xC2, 0x10, 0xC3, 0x10, 0xC4, 0x10,
0xC5, 0x10, 0xFF, 0xFF, 0x1B, 0xD2, 0x21, 0xFF,
0x22, 0xFF, 0x23, 0xFF, 0x24, 0xFF, 0x25, 0xFF,
0x26, 0xFF, 0x27, 0xFF, 0x28, 0xFF, 0x29, 0xFF,
0x2A, 0xFF, 0x2B, 0xFF, 0x2C, 0xFF, 0x2D, 0xFF,
0x2E, 0xFF, 0x2F, 0xFF, 0x30, 0xFF, 0x31, 0xFF,
0x32, 0xFF, 0x33, 0xFF, 0x34, 0xFF, 0x35, 0xFF,
0x36, 0xFF, 0x37, 0xFF, 0x38, 0xFF, 0x39, 0xFF,
0x3A, 0xFF, 0x5B, 0xFF, 0x5C, 0xFF, 0x5D, 0xFF,
0x5E, 0xFF, 0x5F, 0xFF, 0x60, 0xFF, 0x61, 0xFF,
0x62, 0xFF, 0x63, 0xFF, 0x64, 0xFF, 0x65, 0xFF,
0x66, 0xFF, 0x67, 0xFF, 0x68, 0xFF, 0x69, 0xFF,
0x6A, 0xFF, 0x6B, 0xFF, 0x6C, 0xFF, 0x6D, 0xFF,
0x6E, 0xFF, 0x6F, 0xFF, 0x70, 0xFF, 0x71, 0xFF,
0x72, 0xFF, 0x73, 0xFF, 0x74, 0xFF, 0x75, 0xFF,
0x76, 0xFF, 0x77, 0xFF, 0x78, 0xFF, 0x79, 0xFF,
0x7A, 0xFF, 0x7B, 0xFF, 0x7C, 0xFF, 0x7D, 0xFF,
0x7E, 0xFF, 0x7F, 0xFF, 0x80, 0xFF, 0x81, 0xFF,
0x82, 0xFF, 0x83, 0xFF, 0x84, 0xFF, 0x85, 0xFF,
0x86, 0xFF, 0x87, 0xFF, 0x88, 0xFF, 0x89, 0xFF,
0x8A, 0xFF, 0x8B, 0xFF, 0x8C, 0xFF, 0x8D, 0xFF,
0x8E, 0xFF, 0x8F, 0xFF, 0x90, 0xFF, 0x91, 0xFF,
0x92, 0xFF, 0x93, 0xFF, 0x94, 0xFF, 0x95, 0xFF,
0x96, 0xFF, 0x97, 0xFF, 0x98, 0xFF, 0x99, 0xFF,
0x9A, 0xFF, 0x9B, 0xFF, 0x9C, 0xFF, 0x9D, 0xFF,
0x9E, 0xFF, 0x9F, 0xFF, 0xA0, 0xFF, 0xA1, 0xFF,
0xA2, 0xFF, 0xA3, 0xFF, 0xA4, 0xFF, 0xA5, 0xFF,
0xA6, 0xFF, 0xA7, 0xFF, 0xA8, 0xFF, 0xA9, 0xFF,
0xAA, 0xFF, 0xAB, 0xFF, 0xAC, 0xFF, 0xAD, 0xFF,
0xAE, 0xFF, 0xAF, 0xFF, 0xB0, 0xFF, 0xB1, 0xFF,
0xB2, 0xFF, 0xB3, 0xFF, 0xB4, 0xFF, 0xB5, 0xFF,
0xB6, 0xFF, 0xB7, 0xFF, 0xB8, 0xFF, 0xB9, 0xFF,
0xBA, 0xFF, 0xBB, 0xFF, 0xBC, 0xFF, 0xBD, 0xFF,
0xBE, 0xFF, 0xBF, 0xFF, 0xC0, 0xFF, 0xC1, 0xFF,
0xC2, 0xFF, 0xC3, 0xFF, 0xC4, 0xFF, 0xC5, 0xFF,
0xC6, 0xFF, 0xC7, 0xFF, 0xC8, 0xFF, 0xC9, 0xFF,
0xCA, 0xFF, 0xCB, 0xFF, 0xCC, 0xFF, 0xCD, 0xFF,
0xCE, 0xFF, 0xCF, 0xFF, 0xD0, 0xFF, 0xD1, 0xFF,
0xD2, 0xFF, 0xD3, 0xFF, 0xD4, 0xFF, 0xD5, 0xFF,
0xD6, 0xFF, 0xD7, 0xFF, 0xD8, 0xFF, 0xD9, 0xFF,
0xDA, 0xFF, 0xDB, 0xFF, 0xDC, 0xFF, 0xDD, 0xFF,
0xDE, 0xFF, 0xDF, 0xFF, 0xE0, 0xFF, 0xE1, 0xFF,
0xE2, 0xFF, 0xE3, 0xFF, 0xE4, 0xFF, 0xE5, 0xFF,
0xE6, 0xFF, 0xE7, 0xFF, 0xE8, 0xFF, 0xE9, 0xFF,
0xEA, 0xFF, 0xEB, 0xFF, 0xEC, 0xFF, 0xED, 0xFF,
0xEE, 0xFF, 0xEF, 0xFF, 0xF0, 0xFF, 0xF1, 0xFF,
0xF2, 0xFF, 0xF3, 0xFF, 0xF4, 0xFF, 0xF5, 0xFF,
0xF6, 0xFF, 0xF7, 0xFF, 0xF8, 0xFF, 0xF9, 0xFF,
0xFA, 0xFF, 0xFB, 0xFF, 0xFC, 0xFF, 0xFD, 0xFF,
0xFE, 0xFF, 0xFF, 0xFF
};
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