1, for users with privilege, display all users' fd info with the template "Pid  Fd  SysFd Path"
2, for normal user, display its own fd info with the template "Pid Fd Path"

close #I3WB5U
Signed-off-by: Nchenwei <chenwei26@huawei.com>

Merge pull request !350 from 野生毛霉君/master

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WWBD
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !315 from kenneth/LOS_BitmapFfz

Merge pull request !314 from kenneth/BR_Tree

Merge pull request !334 from guweijie/master

Merge pull request !349 from 野生毛霉君/master

函数LOS_BitmapFfz有2个参数，注释中只描述了一个参数，丢失了对参数numBits的描述，影响导出API文档。补充函数注释的@param部分。

close #I3U3SF
Signed-off-by: kenneth <459864689@qq.com>

close: I3WTLZ
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !348 from SimonLi/revert-merge-342-master

Merge pull request !342 from 野生毛霉君/master

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WESD
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !340 from JING/mount

close #I3W2M9
Signed-off-by: Nchenjing <chenjing139@huawei.com>
Change-Id: If8ba7047e2914a3104182bf017f437c2ae962625

Merge pull request !331 from Far/master

Merge pull request !322 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>

1.modifications:
testsuites/unittest/time/timer/smoke/timer_test_tzset_001.cpp
testsuites/unittest/time/timer/smoke/timer_test_tzset_002.cpp
testsuites/unittest/time/timer/time_timer_test.cpp

2.influence:
none
Signed-off-by: Nteamol <28105285@qq.com>

Merge pull request !328 from guweijie/master

update typos in rb tree comment

close #I3U73B
Signed-off-by: kenneth <459864689@qq.com>

1.修改:
compat/posix/src/time.c文件中clock_gettime接口ESRCH返回值为EINVAL.
2.影响:
无.

fix #I3OUHI
Signed-off-by: Nteamol <28105285@qq.com>

Merge pull request !327 from Caoruihong/master

在init_cluster函数中，若未打开LOSCFG_FS_FAT_VIRTUAL_PARTITION会导致循环初始化
簇时，未调用sync_window函数，进而导致创建的文件夹未能正确置零。

Close #I3W1IW
Signed-off-by: NFar <yesiyuan2@huawei.com>

Merge pull request !316 from kenneth/LOS_DL_LIST_IS_END

Merge pull request !317 from kenneth/los_vm_map

Merge pull request !321 from kenneth/destroy

global data should be accessed in protection

fix: #I3PW5Y
Change-Id: I9dfa09992eb8e78935ed367240628300fc033193
Signed-off-by: NCaoruihong <crh.cao@huawei.com>

Merge pull request !310 from JING/link

Merge pull request !318 from MGY917/citu_clean

Merge pull request !318 from MGY917/citu_clean

rename function OsCreateUserVmSpace to fix typo

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3QD42Signed-off-by: kenneth <459864689@qq.com>

fix typo destroy

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3RR17Signed-off-by: Kenneth <459864689@qq.com>

Close #I3VOAO

Change-Id: I42103e0e7061e50f8d63df98ea9f5cecd49fe6f4
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>

update  LOS_DL_LIST_IS_END comment

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3TWU6Signed-off-by: kenneth <459864689@qq.com>

1 将fatfs_creat与fatfs_mkdir抽象成fatfs_creat_obj，通过参数type控制创建的对象类型；
2 新增fatfs_symlink与fatfs_readlink接口，其中：
   1) fatfs_symlink通过fatfs_creat_obj创建出符号链接文件，并为其申请新簇，将target内容写入簇的第一个sector；
   2) fatfs_readlink读出符号链接文件对应簇中第一个sector的内容

close #I3V8D1
Signed-off-by: Nchenjing <chenjing139@huawei.com>
Change-Id: I38dfaa28af156399817530923534d5b73b4c64af

Merge pull request !312 from Caoruihong/porting2

do not copy or link file from //third_party to this repository,
just use the files needed from its origin.

Change-Id: I43f60d8aa7dc91925b8ace973933de366d6cb589
Signed-off-by: NCaoruihong <crh.cao@huawei.com>

Merge pull request !311 from zhushengle/exit

　用户态线程在用户态处于while(1), 在中断处理时使该线程处于READY状态，
此时进程退出时该线程无法被正常回收，导致进程无法合理退出。

Close #I3V8R5

Change-Id: I7f83f5f7fe41c03eb602bf78cfd33fff1b0acdb7
Signed-off-by: Nzhushengle <zhushengle@huawei.com>