feature: 支持newlib与musl切换

系统支持newlib，并且可以与musl-C自由切换

1. 新增newlib支持，适配newlib的预留钩子，针对系统能力适配newlib头文件（补充宏定义，结构体定义，posix能力开关），
  采用标准C与自研posix接口声明与结构体定义混合作为C库
2. 梳理kal的依赖关系，kal作为内核对外提供的标准接口，下属包含cmsis、libc、posix。
  cmsis为内核对cmsis接口的支持，libc为内核对三方C库的适配及使用，posix为内核自研提供的posix标准接口。
  若采用musl-C，则kal中选取libc/musl,posix共同作为C库对外支持；
  若采用newlib-C，则kal中选取libc/newlib,部分posix共同作为C库对外支持。
3. fs整理，components/fs下提供基于posix标准的接口改为内部对外接口，供musl以及newlib切换 适配使用

close: #I4ENQ1

Signed-off-by: arvinzzz <zhaotianyu9@huawei.com>
Change-Id: I72eda5ac5499f72c67e800e22b0f39eb288f2b94

components/fs/BUILD.gn

@@ -29,24 +29,11 @@
 
 import("//kernel/liteos_m/liteos.gni")
 
-module_switch = defined(LOSCFG_FS_VFS)
-module_name = "fs_operations"
-kernel_module(module_name) {
-  sources = [ "fs.c" ]
-}
-
-group("fs") {
-  deps = [ ":$module_name" ]
-  deps += [
-    "fatfs",
+module_name = get_path_info(rebase_path("."), "name")
+module_group(module_name) {
+  modules = [
+    "vfs",
     "littlefs",
-  ]
-}
-
-config("public") {
-  include_dirs = [ "." ]
-  configs = [
-    "fatfs:public",
-    "littlefs:public",
+    "fatfs",
   ]
 }

components/fs/Kconfig

@@ -0,0 +1,42 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+rsource "vfs/Kconfig"
+rsource "littlefs/Kconfig"
+rsource "fatfs/Kconfig"
+
+config SUPPORT_FATFS
+    bool
+    default n
+    depends on FS_FAT
+
+config SUPPORT_LITTLEFS
+    bool
+    default n
+    depends on FS_LITTLEFS

components/fs/fatfs/Kconfig

@@ -1,9 +1,38 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 config FS_FAT
     bool "Enable FAT"
     default n
     depends on FS_VFS
     select SUPPORT_FATFS
-    select COMPAT_CMSIS
+    select KAL_CMSIS
     help
       Answer Y to enable LiteOS support fat filesystem.
 

components/fs/littlefs/Kconfig

@@ -0,0 +1,44 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+config FS_LITTLEFS
+    bool "Enable Little FS"
+    default n
+    depends on FS_VFS
+    help
+      Answer Y to enable LiteOS support Little FS filesystem.
+
+if FS_LITTLEFS
+config LFS_MAX_MOUNT_SIZE
+    int "Maximum number of mount points"
+    default 3
+    help
+        This is a global maximum number of mount points.
+
+endif # FS_LITTLEFS

components/fs/littlefs/lfs_api.h

@@ -45,8 +45,6 @@
 
 #define INVALID_FD (-1)
 
-typedef unsigned mode_t;
-
 #ifndef VFS_ERROR
 #define VFS_ERROR (-1)
 #endif

components/fs/vfs/BUILD.gn

@@ -0,0 +1,40 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import("//kernel/liteos_m/liteos.gni")
+
+module_switch = defined(LOSCFG_FS_VFS)
+module_name = get_path_info(rebase_path("."), "name")
+kernel_module(module_name) {
+  sources = [ "los_fs.c" ]
+}
+
+config("public") {
+  include_dirs = [ "." ]
+}

components/fs/vfs/Kconfig

@@ -0,0 +1,34 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+config FS_VFS
+    bool "Enable FS VFS"
+    default y
+    help
+      Answer Y to enable LiteOS support VFS.

components/fs/vfs/los_fs.c

@@ -28,8 +28,10 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "fs_operations.h"
+
+#include "los_fs.h"
 #include "los_config.h"
+#include "fs_operations.h"
 #if (LOSCFG_SUPPORT_FATFS == 1)
 #include "fatfs.h"
 #endif
@@ -188,9 +190,9 @@ static struct FsMap *MountFindfs(const char *fileSystemtype)
     return NULL;
 }
 
-int mount(const char *source, const char *target,
-          const char *filesystemtype, unsigned long mountflags,
-          const void *data)
+int LOS_FsMount(const char *source, const char *target,
+                const char *filesystemtype, unsigned long mountflags,
+                const void *data)
 {
     static int initFlag = 0;
 
@@ -213,7 +215,7 @@ int mount(const char *source, const char *target,
     return g_fs->fsMops->Mount(source, target, filesystemtype, mountflags, data);
 }
 
-int umount(const char *target)
+int LOS_FsUmount(const char *target)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -226,7 +228,7 @@ int umount(const char *target)
     return g_fs->fsMops->Umount(target);
 }
 
-int umount2(const char *target, int flag)
+int LOS_FsUmount2(const char *target, int flag)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -239,7 +241,7 @@ int umount2(const char *target, int flag)
     return g_fs->fsMops->Umount2(target, flag);
 }
 
-int open(const char *path, int oflag, ...)
+int LOS_Open(const char *path, int oflag, ...)
 {
 #ifdef LOSCFG_RANDOM_DEV
     unsigned flags = O_RDONLY | O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_LARGEFILE | O_TRUNC | O_EXCL | O_DIRECTORY;
@@ -294,7 +296,7 @@ int open(const char *path, int oflag, ...)
     return g_fs->fsFops->Open(path, oflag);
 }
 
-int close(int fd)
+int LOS_Close(int fd)
 {
 #ifdef LOSCFG_RANDOM_DEV
     if (fd == RANDOM_DEV_FD) {
@@ -317,7 +319,7 @@ int close(int fd)
     return g_fs->fsFops->Close(fd);
 }
 
-ssize_t read(int fd, void *buf, size_t nbyte)
+ssize_t LOS_Read(int fd, void *buf, size_t nbyte)
 {
 #ifdef LOSCFG_RANDOM_DEV
     if (fd == RANDOM_DEV_FD) {
@@ -355,7 +357,7 @@ ssize_t read(int fd, void *buf, size_t nbyte)
     return g_fs->fsFops->Read(fd, buf, nbyte);
 }
 
-ssize_t write(int fd, const void *buf, size_t nbyte)
+ssize_t LOS_Write(int fd, const void *buf, size_t nbyte)
 {
 #ifdef LOSCFG_RANDOM_DEV
     if (fd == RANDOM_DEV_FD) {
@@ -379,7 +381,7 @@ ssize_t write(int fd, const void *buf, size_t nbyte)
     return g_fs->fsFops->Write(fd, buf, nbyte);
 }
 
-off_t lseek(int fd, off_t offset, int whence)
+off_t LOS_Lseek(int fd, off_t offset, int whence)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -392,7 +394,7 @@ off_t lseek(int fd, off_t offset, int whence)
     return g_fs->fsFops->Seek(fd, offset, whence);
 }
 
-int unlink(const char *path)
+int LOS_Unlink(const char *path)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -405,7 +407,7 @@ int unlink(const char *path)
     return g_fs->fsFops->Unlink(path);
 }
 
-int fstat(int fd, struct stat *buf)
+int LOS_Fstat(int fd, struct stat *buf)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -418,7 +420,7 @@ int fstat(int fd, struct stat *buf)
     return g_fs->fsFops->Fstat(fd, buf);
 }
 
-int stat(const char *path, struct stat *buf)
+int LOS_Stat(const char *path, struct stat *buf)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -431,7 +433,7 @@ int stat(const char *path, struct stat *buf)
     return g_fs->fsFops->Getattr(path, buf);
 }
 
-int fsync(int fd)
+int LOS_Fsync(int fd)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -444,7 +446,7 @@ int fsync(int fd)
     return g_fs->fsFops->Fsync(fd);
 }
 
-int mkdir(const char *path, mode_t mode)
+int LOS_Mkdir(const char *path, mode_t mode)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -457,7 +459,7 @@ int mkdir(const char *path, mode_t mode)
     return g_fs->fsFops->Mkdir(path, mode);
 }
 
-DIR *opendir(const char *dirName)
+DIR *LOS_Opendir(const char *dirName)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -470,7 +472,7 @@ DIR *opendir(const char *dirName)
     return g_fs->fsFops->Opendir(dirName);
 }
 
-struct dirent *readdir(DIR *dir)
+struct dirent *LOS_Readdir(DIR *dir)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -483,7 +485,7 @@ struct dirent *readdir(DIR *dir)
     return g_fs->fsFops->Readdir(dir);
 }
 
-int closedir(DIR *dir)
+int LOS_Closedir(DIR *dir)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -496,7 +498,7 @@ int closedir(DIR *dir)
     return g_fs->fsFops->Closedir(dir);
 }
 
-int rmdir(const char *path)
+int LOS_Rmdir(const char *path)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -509,7 +511,7 @@ int rmdir(const char *path)
     return g_fs->fsFops->Rmdir(path);
 }
 
-int rename(const char *oldName, const char *newName)
+int LOS_Rename(const char *oldName, const char *newName)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -522,7 +524,7 @@ int rename(const char *oldName, const char *newName)
     return g_fs->fsFops->Rename(oldName, newName);
 }
 
-int statfs(const char *path, struct statfs *buf)
+int LOS_Statfs(const char *path, struct statfs *buf)
 {
     if (g_fs == NULL) {
         errno = ENODEV;
@@ -535,7 +537,7 @@ int statfs(const char *path, struct statfs *buf)
     return g_fs->fsMops->Statfs(path, buf);
 }
 
-int ftruncate(int fd, off_t length)
+int LOS_Ftruncate(int fd, off_t length)
 {
     if (g_fs == NULL) {
         errno = ENODEV;

components/fs/vfs/los_fs.h

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @defgroup los_vfs fs
+ * @ingroup kernel
+ */
+
+#ifndef _LOS_VFS_H_
+#define _LOS_VFS_H_
+
+#include "los_config.h"
+#include "dirent.h"
+#include "sys/mount.h"
+#include "sys/statfs.h"
+#include "sys/stat.h"
+#include "unistd.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+int LOS_Open(const char *path, int oflag, ...);
+
+int LOS_Close(int fd);
+
+ssize_t LOS_Read(int fd, void *buf, size_t nbyte);
+
+ssize_t LOS_Write(int fd, const void *buf, size_t nbyte);
+
+off_t LOS_Lseek(int fd, off_t offset, int whence);
+
+int LOS_Unlink(const char *path);
+
+int LOS_Fstat(int fd, struct stat *buf);
+
+int LOS_Stat(const char *path, struct stat *buf);
+
+int LOS_Fsync(int fd);
+
+int LOS_Mkdir(const char *path, mode_t mode);
+
+DIR *LOS_Opendir(const char *dirName);
+
+struct dirent *LOS_Readdir(DIR *dir);
+
+int LOS_Closedir(DIR *dir);
+
+int LOS_Rmdir(const char *path);
+
+int LOS_Rename(const char *oldName, const char *newName);
+
+int LOS_Statfs(const char *path, struct statfs *buf);
+
+int LOS_Ftruncate(int fd, off_t length);
+
+int LOS_FsUmount2(const char *target, int flag);
+
+int LOS_FsUmount(const char *target);
+
+int LOS_FsMount(const char *source, const char *target,
+          const char *filesystemtype, unsigned long mountflags,
+          const void *data);
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _LOS_FS_H_ */

components/fs/vfs/vfs_config.h

@@ -82,12 +82,6 @@
 #define CONFIG_NUNGET_CHARS         0
 #define MIN_START_FD 3 // 0,1,2 are used for stdin,stdout,stderr respectively
 
-#define FD_SET_TOTAL_SIZE               (FD_SETSIZE + CONFIG_NEXPANED_DESCRIPTORS)
-#define FD_SETSIZE                      (CONFIG_NFILE_DESCRIPTORS + CONFIG_NSOCKET_DESCRIPTORS)
-#define CONFIG_NEXPANED_DESCRIPTORS     (CONFIG_NTIME_DESCRIPTORS + CONFIG_NQUEUE_DESCRIPTORS)
-#define TIMER_FD_OFFSET                 FD_SETSIZE
-#define MQUEUE_FD_OFFSET                (FD_SETSIZE + CONFIG_NTIME_DESCRIPTORS)
-
 /* net configure */
 
 #ifdef LOSCFG_NET_LWIP_SACK             // enable socket and net function
@@ -129,6 +123,12 @@
 
 #define CONFIG_NQUEUE_DESCRIPTORS    256
 
+#define FD_SETSIZE                      (CONFIG_NFILE_DESCRIPTORS + CONFIG_NSOCKET_DESCRIPTORS)
+#define CONFIG_NEXPANED_DESCRIPTORS     (CONFIG_NTIME_DESCRIPTORS + CONFIG_NQUEUE_DESCRIPTORS)
+#define FD_SET_TOTAL_SIZE               (FD_SETSIZE + CONFIG_NEXPANED_DESCRIPTORS)
+#define TIMER_FD_OFFSET                 FD_SETSIZE
+#define MQUEUE_FD_OFFSET                (FD_SETSIZE + CONFIG_NTIME_DESCRIPTORS)
+
 /* directory configure */
 
 #define VFS_USING_WORKDIR               // enable current working directory