Merge pull request !34 from Harylee/mmu

Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: If70b4f03cc5d763ffaaa413ea5f131b32fbcf4e0

Merge pull request !31 from Far/master

1. f_open接口在一些错误分支中未释放当前文件的锁，这会导致再次打开该文件时失败（EBUSY）;
2. f_mkfs未正确初始化返回值FRESULT fr的值，导致不可预知的返回值;
3. f_fdisk循环条件错误，导致死循环;

Close #I4EZEC
Signed-off-by: NFar <yesiyuan2@huawei.com>

Merge pull request !28 from Caoruihong/oat_binary

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ib0a453b5d6be226a99c903b3d20b4f2b0839d69d

Merge pull request !24 from Far/r014a

1. f_mkfs接口增强，现在除了簇大小，同时支持fat表数量，数据区对齐大小，根目录大小的设置。
2. 抽象部分内部接口find_volume/create_partition，提高代码复用度。
3. 修复一些bug。
Signed-off-by: NFar <yesiyuan2@huawei.com>

Merge pull request !25 from LeonChan/pg

Signed-off-by: NLeon Chan <chenwei26@huawei.com>

Merge pull request !22 from Caoruihong/oat3

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ifa8351b0919b53f012618a4ac80e3c704b409382

Merge pull request !20 from Caoruihong/oat2

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I69b6a05729c2f7cb4e44f001bec48522aa09c12c

Merge pull request !19 from 野生毛霉君/master

close: #I43S7Z
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !18 from Far/fatfs

FATFS内部接口中，仅对FAT32的FAT表结束符0x0FFFFFFF做了判断，而忽略了FAT12和FAT16的结束标志。
这会导致子在FAT12/FAT16中，部分功能异常。

Close #I409R6
Signed-off-by: NFar <yesiyuan2@huawei.com>

Merge pull request !17 from Far/master

Liteos_a FATFS需要提供格式化时设置卷标的功能，该功能在当前系统中缺失。
为了适配VFS层重构的逻辑，重新封装部分函数。

Close #I3Y5G8
Signed-off-by: NFar <yesiyuan2@huawei.com>

Merge pull request !15 from 野生毛霉君/master

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !14 from JING/link

利用fatfs目录项中的保留字段，作为符号链接的标识符。

close #I3V8D1
Signed-off-by: Nchenjing <chenjing139@huawei.com>
Change-Id: I69fc4c668ed8377364dddd9bd28ebeef100d9b14

Merge pull request !13 from Far/master

Merge pull request !12 from Far/fatfs

Close #I3N2LW

FAT12/FAT16 partition has no FSINFO sector storing the free cluster number,
so scanning the FAT is necessary to get the free clusters nums.

Close #I3Q0VS

Merge pull request !10 from JING/master

Print log message when an exFat filesystem is recognized.

Close #I3O8IF

Merge pull request !8 from Caoruihong/dropxmode

Merge pull request !9 from Caoruihong/readme

Change-Id: I9a6232ca0fd51a590073bcb9dae3c34b72db9619

Change-Id: Iae871ce706bef622350954601de615c7b79046a5

Merge pull request !7 from JING/master

Bug: #I3NEVN
Test:

Merge pull request !6 from JING/master