diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/applications/mnt.c b/bsp/bluetrum/ab32vg1-ab-prougen/applications/mnt.c
index 50681e7bc607af82f88676538cd20bc5742205de..317dd4c862478d8cd5e5dd4b029c7c43c1ce385f 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/applications/mnt.c
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/applications/mnt.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_gpio.h"
 
 // #define DRV_DEBUG
diff --git a/bsp/efm32/application.c b/bsp/efm32/application.c
index 332dcc6ba8d8e971ab65f5e7fb4139006af3addc..5f2ad9866c7ea563c28ea5603b0d659cbc1fe94d 100644
--- a/bsp/efm32/application.c
+++ b/bsp/efm32/application.c
@@ -65,10 +65,18 @@
 #include <rtgui/widgets/box.h>
 #include <rtgui/image.h>
 
-#if defined(RTGUI_USING_DFS_FILERW)
+ #if defined(RTGUI_USING_DFS_FILERW)
  #include <dfs_posix.h>
  #define PATH_SEPARATOR     '/'
  #endif
+#if defined(RTGUI_USING_DFS_FILERW)
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#define PATH_SEPARATOR     '/'
+#endif
 #endif
 
 /* Private typedef -----------------------------------------------------------*/
diff --git a/bsp/ft2004/drivers/drv_sdcard.c b/bsp/ft2004/drivers/drv_sdcard.c
index a6494089f6232d5f4429523c5d90cc47807432db..753a70b606b0cc1023840383be52199d057f7520 100644
--- a/bsp/ft2004/drivers/drv_sdcard.c
+++ b/bsp/ft2004/drivers/drv_sdcard.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_sdctrl.h"
 
 #define DBG_TAG "app.card"
diff --git a/bsp/lpc54114-lite/applications/mnt.c b/bsp/lpc54114-lite/applications/mnt.c
index 49852b20259681e9594e84473a79826e8ee8c8a5..f67c5c21ea264fc11b694529adb1da1b9885bb02 100644
--- a/bsp/lpc54114-lite/applications/mnt.c
+++ b/bsp/lpc54114-lite/applications/mnt.c
@@ -11,7 +11,10 @@
 
 #if defined(RT_USING_DFS)
 #include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #define BSP_FLASH_MOUNT_PATH  "/mnt/flash"
diff --git a/bsp/mini4020/applications/application.c b/bsp/mini4020/applications/application.c
index f5a77d8c60747b7bd7f694d1ec5caf57f26e77f9..722443ac7ca9bd831854c8a9c806576494239fed 100644
--- a/bsp/mini4020/applications/application.c
+++ b/bsp/mini4020/applications/application.c
@@ -22,7 +22,11 @@
 #include <dfs.h>
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #ifdef RT_USING_RTGUI
diff --git a/bsp/nrf5x/nrf52832/applications/mnt.c b/bsp/nrf5x/nrf52832/applications/mnt.c
index c7e4d1023504ac57e0cd53fa5554878be246ae0c..d4af1d2b6c361862e2a5fb20868ba8c61461dac4 100644
--- a/bsp/nrf5x/nrf52832/applications/mnt.c
+++ b/bsp/nrf5x/nrf52832/applications/mnt.c
@@ -35,7 +35,11 @@
 #endif
 
 #include "fal.h"
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define LOG_TAG "drv.fs"
 #define DBG_LVL DBG_LOG
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_sdh.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_sdh.c
index 708f653d36abf5ade3b7db297d697f391f577a69..38086cb2d5b8fb1a72e3af8b41a6806fbc7d2ab2 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_sdh.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_sdh.c
@@ -20,8 +20,12 @@
 #include <string.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 /* Private define ---------------------------------------------------------------*/
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_sdh.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_sdh.c
index 7c92743bd33f59472282e0d9e9c31da49c9e2992..7c5aa68697e506072c569c3536ba6d811e58b326 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_sdh.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_sdh.c
@@ -20,8 +20,12 @@
 #include <string.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 /* Private define ---------------------------------------------------------------*/
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_sdh.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_sdh.c
index 499311c752f42b22011a8462f137f857f04a1398..955fe6a64582c570f9c42cb9af4c7daecb819470 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_sdh.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_sdh.c
@@ -20,8 +20,12 @@
 #include <drv_sys.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 /* Private define ---------------------------------------------------------------*/
diff --git a/bsp/nuvoton/libraries/nu_packages/AudioCodec/audio_test.c b/bsp/nuvoton/libraries/nu_packages/AudioCodec/audio_test.c
index d978fa4ded1ff881775dd016588d7150d27af4fc..6a805b3ba707ff506c8936c5dd39c23fe683e795 100644
--- a/bsp/nuvoton/libraries/nu_packages/AudioCodec/audio_test.c
+++ b/bsp/nuvoton/libraries/nu_packages/AudioCodec/audio_test.c
@@ -16,7 +16,11 @@
 
 #include "wavrecorder.h"
 #include "wavplayer.h"
-#include "dfs_posix.h"
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 /*
   The routine just for test automatically.
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_sdh.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_sdh.c
index 6990ce215cb18cad9e35e0e5b0499b2a65b3ef45..4b81a01f5258ce3d887a1d87b802966f1fca04f6 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_sdh.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_sdh.c
@@ -21,8 +21,12 @@
 #include <drv_sys.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 /* Private define ---------------------------------------------------------------*/
diff --git a/bsp/nuvoton/nk-980iot/applications/mnt.c b/bsp/nuvoton/nk-980iot/applications/mnt.c
index 4ff5b1f252eeb80a2fa5e412c7bd155ad9320dbf..803e4b751ba8a1bcef423c57fdbd5f17007f47f8 100644
--- a/bsp/nuvoton/nk-980iot/applications/mnt.c
+++ b/bsp/nuvoton/nk-980iot/applications/mnt.c
@@ -22,8 +22,12 @@
 #include <rtdbg.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/nuvoton/nk-n9h30/applications/mnt.c b/bsp/nuvoton/nk-n9h30/applications/mnt.c
index 03e748124224671e1464498032420ea434594ce5..f4e7cf5bf3044d980e370bb5554f183cf60a0f36 100644
--- a/bsp/nuvoton/nk-n9h30/applications/mnt.c
+++ b/bsp/nuvoton/nk-n9h30/applications/mnt.c
@@ -22,8 +22,12 @@
 #include <rtdbg.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/nuvoton/nk-rtu980/applications/mnt.c b/bsp/nuvoton/nk-rtu980/applications/mnt.c
index ecfc390243d9d437de0bed18a3b89e95cb4feb4e..f99fcb0134c91478ab27872aa915df2cae408a2e 100644
--- a/bsp/nuvoton/nk-rtu980/applications/mnt.c
+++ b/bsp/nuvoton/nk-rtu980/applications/mnt.c
@@ -22,8 +22,12 @@
 #include <rtdbg.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/nuvoton/numaker-iot-m487/applications/mnt.c b/bsp/nuvoton/numaker-iot-m487/applications/mnt.c
index d7e657d852303579aa94fdc4679b2701db54b649..c0cec189789b21dd84a20543eea4c2c16ae2a013 100644
--- a/bsp/nuvoton/numaker-iot-m487/applications/mnt.c
+++ b/bsp/nuvoton/numaker-iot-m487/applications/mnt.c
@@ -13,8 +13,12 @@
 #include <rtthread.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/nuvoton/numaker-m032ki/applications/mnt.c b/bsp/nuvoton/numaker-m032ki/applications/mnt.c
index 914fa657f6be104ba82932c252c37604275f1a2b..00f0f91499c9ccc8fa7bafef0b1f212371aacd4b 100644
--- a/bsp/nuvoton/numaker-m032ki/applications/mnt.c
+++ b/bsp/nuvoton/numaker-m032ki/applications/mnt.c
@@ -13,8 +13,12 @@
 #include <rtthread.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/nuvoton/numaker-pfm-m487/applications/mnt.c b/bsp/nuvoton/numaker-pfm-m487/applications/mnt.c
index 6e7a9ff5de673c1626031715cd2bc34763d6382c..844ab9960d67e1336032def073b8bd20a6dbcc17 100644
--- a/bsp/nuvoton/numaker-pfm-m487/applications/mnt.c
+++ b/bsp/nuvoton/numaker-pfm-m487/applications/mnt.c
@@ -13,8 +13,12 @@
 #include <rtthread.h>
 
 #if defined(RT_USING_DFS)
-    #include <dfs_fs.h>
-    #include <dfs_posix.h>
+#include <dfs_fs.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #if defined(PKG_USING_FAL)
diff --git a/bsp/simulator/drivers/module_win32.c b/bsp/simulator/drivers/module_win32.c
index 81a98eca87e7334299c7cda64341551e42daba72..0f07576964943e57425279092fb83167231e34e2 100644
--- a/bsp/simulator/drivers/module_win32.c
+++ b/bsp/simulator/drivers/module_win32.c
@@ -193,7 +193,11 @@ RTM_EXPORT(rt_module_find);
 
 #ifdef RT_USING_DFS
 #include <windows.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 extern char * dfs_win32_dirdup(char * path);
 static char* _module_name(const char *path)
 {
diff --git a/bsp/stm32/stm32f103-atk-warshipv3/board/ports/sdcard_port.c b/bsp/stm32/stm32f103-atk-warshipv3/board/ports/sdcard_port.c
index d56fb039d45fdddeb4897e044c71803e29da3bda..df2614c08098bd9655a06ebfd1849ed715a30207 100644
--- a/bsp/stm32/stm32f103-atk-warshipv3/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f103-atk-warshipv3/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f103-dofly-M3S/board/ports/drv_sdcard.c b/bsp/stm32/stm32f103-dofly-M3S/board/ports/drv_sdcard.c
index 13d235b69465bc89bd8a4b9d0b40207f17f33991..d717da27dd9ccc75f9ec4f0e3444a5291cde5c3a 100644
--- a/bsp/stm32/stm32f103-dofly-M3S/board/ports/drv_sdcard.c
+++ b/bsp/stm32/stm32f103-dofly-M3S/board/ports/drv_sdcard.c
@@ -14,7 +14,11 @@
 #if defined BSP_USING_SDIO_SDCARD || defined BSP_USING_SPI_SDCARD
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_gpio.h"
 
 #define DBG_TAG "app.card"
diff --git a/bsp/stm32/stm32f103-fire-arbitrary/board/ports/sdcard_port.c b/bsp/stm32/stm32f103-fire-arbitrary/board/ports/sdcard_port.c
index 55baa2c263741d7c87d224113af43053078f10c1..c0575f01b252ce4d24b36bb0aa9f0c5638e4c74e 100644
--- a/bsp/stm32/stm32f103-fire-arbitrary/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f103-fire-arbitrary/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f407-armfly-v5/board/ports/sdcard_port.c b/bsp/stm32/stm32f407-armfly-v5/board/ports/sdcard_port.c
index f5427ef26564da44a2958558f34161f6ba62d761..2b6e48ba3f268f5cc35ea3adb58f6ad32d2b75d3 100644
--- a/bsp/stm32/stm32f407-armfly-v5/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f407-armfly-v5/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c b/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
index 6635c43128ea762b963a143b37580cee46f245a8..cafb45b1074faad03115706164c70c57b43814fc 100644
--- a/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
+++ b/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
@@ -15,7 +15,11 @@
 #ifdef BSP_USING_FS
 #include <dfs_romfs.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #if DFS_FILESYSTEMS_MAX < 4
 #error "Please define DFS_FILESYSTEMS_MAX more than 4"
diff --git a/bsp/stm32/stm32f427-robomaster-a/board/ports/sdcard_port.c b/bsp/stm32/stm32f427-robomaster-a/board/ports/sdcard_port.c
index 6a79c83523588f0ffacfd7acb81e0cd6743db952..376089ef9e5677764c8ac24d3b1a9e5917cf0f1d 100644
--- a/bsp/stm32/stm32f427-robomaster-a/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f427-robomaster-a/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f429-armfly-v6/board/ports/sdcard_port.c b/bsp/stm32/stm32f429-armfly-v6/board/ports/sdcard_port.c
index 6a79c83523588f0ffacfd7acb81e0cd6743db952..376089ef9e5677764c8ac24d3b1a9e5917cf0f1d 100644
--- a/bsp/stm32/stm32f429-armfly-v6/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f429-armfly-v6/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f429-atk-apollo/board/ports/sdcard_port.c b/bsp/stm32/stm32f429-atk-apollo/board/ports/sdcard_port.c
index fe2595fa4b5969d68d4feffe9d57aca17016dfc5..058a948a8a58d33bb9fd903cbe2aaca41e890241 100644
--- a/bsp/stm32/stm32f429-atk-apollo/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f429-atk-apollo/board/ports/sdcard_port.c
@@ -15,7 +15,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f429-fire-challenger/board/ports/sdcard_port.c b/bsp/stm32/stm32f429-fire-challenger/board/ports/sdcard_port.c
index 01111ab4d384f7e4ade6c43a9b9f04fea7ec2c22..93702aed137e3e76e5bf22b8c0e7c220eb64e347 100644
--- a/bsp/stm32/stm32f429-fire-challenger/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f429-fire-challenger/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_gpio.h"
 
 #define DBG_TAG "app.card"
diff --git a/bsp/stm32/stm32f469-st-disco/board/ports/drv_sdcard.c b/bsp/stm32/stm32f469-st-disco/board/ports/drv_sdcard.c
index 9fd2d11fd4d346bd2de2ed1d1263e33832559ae1..986a562cdd9c35093a9de27ada02b792faaabddf 100644
--- a/bsp/stm32/stm32f469-st-disco/board/ports/drv_sdcard.c
+++ b/bsp/stm32/stm32f469-st-disco/board/ports/drv_sdcard.c
@@ -15,7 +15,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_gpio.h"
 #include "drv_sdio.h"
 
diff --git a/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c b/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
index 66e8dfefab1046a006f3850dc9c67094db017d90..bcb8a33308a3211738e9f45e1d88839ce1a39baf 100644
--- a/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f767-atk-apollo/board/ports/sdcard_port.c b/bsp/stm32/stm32f767-atk-apollo/board/ports/sdcard_port.c
index bc7e8b676ee9e85851cb7633a4bcdc294311bc89..9180edcc7e00c7619f0a9a1681b66f874c7ca41b 100644
--- a/bsp/stm32/stm32f767-atk-apollo/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f767-atk-apollo/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32f767-fire-challenger-v1/board/ports/sdcard_port.c b/bsp/stm32/stm32f767-fire-challenger-v1/board/ports/sdcard_port.c
index f1a7b8c27f05ad1cb862f0a88855f63bbef3b063..edbb295da561b582fb83e150fc2f66c79d7fc97d 100644
--- a/bsp/stm32/stm32f767-fire-challenger-v1/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f767-fire-challenger-v1/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_gpio.h"
 
 #define DBG_TAG "app.card"
diff --git a/bsp/stm32/stm32h743-atk-apollo/board/ports/drv_ov2640.c b/bsp/stm32/stm32h743-atk-apollo/board/ports/drv_ov2640.c
index 95e5784654b715e2ac9bfb26fdc9f0ac95879ac5..83058e352c641f601fa3c9783da218ed1c326a46 100644
--- a/bsp/stm32/stm32h743-atk-apollo/board/ports/drv_ov2640.c
+++ b/bsp/stm32/stm32h743-atk-apollo/board/ports/drv_ov2640.c
@@ -12,7 +12,11 @@
 
 #if defined(BSP_USING_OV2640)
 
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <drv_ov2640.h>
 #include <drv_dcmi.h>
 #include "pcf8574.h"
diff --git a/bsp/stm32/stm32l475-atk-pandora/board/ports/drv_sdcard.c b/bsp/stm32/stm32l475-atk-pandora/board/ports/drv_sdcard.c
index 2bed0ef4153024a9fc8e6467f7a2c880d2ea4f70..ba253aacfa97c9c36f573ad63ccdf5b35ccf4bd2 100644
--- a/bsp/stm32/stm32l475-atk-pandora/board/ports/drv_sdcard.c
+++ b/bsp/stm32/stm32l475-atk-pandora/board/ports/drv_sdcard.c
@@ -15,7 +15,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_spi.h"
 #include "spi_msd.h"
 
diff --git a/bsp/stm32/stm32l496-ali-developer/board/ports/sdcard_port.c b/bsp/stm32/stm32l496-ali-developer/board/ports/sdcard_port.c
index 6abc52c3ba73dec9cc27d5a8c1db2efaefde063c..3016f583d3402780cfb887503218acd929229da7 100644
--- a/bsp/stm32/stm32l496-ali-developer/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32l496-ali-developer/board/ports/sdcard_port.c
@@ -14,7 +14,11 @@
 
 #include <dfs_elm.h>
 #include <dfs_fs.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DBG_TAG "app.card"
 #define DBG_LVL DBG_INFO
diff --git a/bsp/stm32/stm32mp157a-st-discovery/board/ports/audio/audio_play.c b/bsp/stm32/stm32mp157a-st-discovery/board/ports/audio/audio_play.c
index 2e045b016bce64302f4413a0a80993c317a776de..1f463d99bfc47f2d96418c2bb6bdbb002ded13bd 100644
--- a/bsp/stm32/stm32mp157a-st-discovery/board/ports/audio/audio_play.c
+++ b/bsp/stm32/stm32mp157a-st-discovery/board/ports/audio/audio_play.c
@@ -10,7 +10,11 @@
 
 #include <rtthread.h>
 #include <rtdevice.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #if defined(BSP_USING_AUDIO) && defined(BSP_USING_SDMMC)
 #define BUFSZ   1024
diff --git a/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_ov5640.c b/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_ov5640.c
index 69af85e27be2cf6bbd26482484ebe440a4f9e4d6..303a78fc1dcae5f5277a6e994d0bff2aeb8542db 100644
--- a/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_ov5640.c
+++ b/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_ov5640.c
@@ -13,7 +13,11 @@
 #if defined(BSP_USING_DCMI)
 
 #include "drv_mfx.h"
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "drv_ov5640.h"
 
 //#define DRV_DEBUG
diff --git a/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_sound.c b/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_sound.c
index b9e76a0703385ffee64b7e022906c6de59146839..93acea9c1dcf42e89b038e86d9c2f0ca66ecf538 100644
--- a/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_sound.c
+++ b/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_sound.c
@@ -13,7 +13,11 @@
 
 #ifdef BSP_USING_AUDIO
 #include "drv_wm8994.h"
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define DRV_DEBUG
 #define LOG_TAG             "drv.sound"
diff --git a/bsp/swm320-lq100/applications/main.c b/bsp/swm320-lq100/applications/main.c
index 5685bf67457bd75502bb105dce3fbabb013b70cf..ecc86347c2bc2b1034e87c9ce78741b386787e31 100644
--- a/bsp/swm320-lq100/applications/main.c
+++ b/bsp/swm320-lq100/applications/main.c
@@ -260,7 +260,11 @@ MSH_CMD_EXPORT(wdt_sample, wdt sample);
 
 #include "drv_spi.h"
 #include "spi_flash_sfud.h"
-#include "dfs_posix.h"
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static int rt_hw_spi_flash_init(void)
 {
@@ -380,7 +384,11 @@ MSH_CMD_EXPORT(spi_w25q_sample, spi w25q sample);
 //#define SDCARD_NAME "sd0"
 
 //#include "drv_spi.h"
-//#include "dfs_posix.h"
+// #include <dfs_file.h>
+// #include <unistd.h>
+// #include <stdio.h>
+// #include <sys/stat.h>
+// #include <sys/statfs.h>
 //#include "spi_msd.h"
 
 //static int rt_hw_spi1_tfcard(void)
@@ -437,7 +445,11 @@ MSH_CMD_EXPORT(spi_w25q_sample, spi w25q sample);
 #ifdef RT_USING_SDIO
 #define SDCARD_NAME "sd0"
 
-#include "dfs_posix.h"
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static void sdio_elmfat_sample(void)
 {
diff --git a/bsp/swm320/applications/main.c b/bsp/swm320/applications/main.c
index 0ebd6663f6b155b06c02b34d4d6a63ad091e6d9b..f34a42172737e4df204e267893b9ce037ccca3c8 100644
--- a/bsp/swm320/applications/main.c
+++ b/bsp/swm320/applications/main.c
@@ -260,7 +260,11 @@ MSH_CMD_EXPORT(wdt_sample, wdt sample);
 
 #include "drv_spi.h"
 #include "spi_flash_sfud.h"
-#include "dfs_posix.h"
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static int rt_hw_spi_flash_init(void)
 {
@@ -380,7 +384,11 @@ MSH_CMD_EXPORT(spi_w25q_sample, spi w25q sample);
 //#define SDCARD_NAME "sd0"
 
 //#include "drv_spi.h"
-//#include "dfs_posix.h"
+// #include <dfs_file.h>
+// #include <unistd.h>
+// #include <stdio.h>
+// #include <sys/stat.h>
+// #include <sys/statfs.h>
 //#include "spi_msd.h"
 
 //static int rt_hw_spi1_tfcard(void)
@@ -437,7 +445,11 @@ MSH_CMD_EXPORT(spi_w25q_sample, spi w25q sample);
 #ifdef RT_USING_SDIO
 #define SDCARD_NAME "sd0"
 
-#include "dfs_posix.h"
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static void sdio_elmfat_sample(void)
 {
diff --git a/components/drivers/serial/serial.c b/components/drivers/serial/serial.c
index da330b5e9c21ed977669763241b185d6f5979f6e..7182e23c370d9e619e22624b27d3a1ee1949aa99 100644
--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@@ -37,7 +37,10 @@
 #include <rtdbg.h>
 
 #ifdef RT_USING_POSIX_STDIO
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <poll.h>
 #include <sys/ioctl.h>
 
diff --git a/components/drivers/serial/serial_v2.c b/components/drivers/serial/serial_v2.c
index 16d376eeb907a1c14b2b7ac2108e1c272b081899..738afcb0818ca4e96d69ce37249623acb49988ba 100644
--- a/components/drivers/serial/serial_v2.c
+++ b/components/drivers/serial/serial_v2.c
@@ -17,7 +17,9 @@
 #include <rtdbg.h>
 
 #ifdef RT_USING_POSIX_STDIO
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <poll.h>
 #include <sys/ioctl.h>
 
diff --git a/components/drivers/src/pipe.c b/components/drivers/src/pipe.c
index 7e1f569b62b9f97c10102ef3a1d1d946d430b245..2bc0a100830b66d77eff57db4abc8488bad4c396 100644
--- a/components/drivers/src/pipe.c
+++ b/components/drivers/src/pipe.c
@@ -14,8 +14,9 @@
 #include <sys/errno.h>
 
 #if defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_POSIX_PIPE)
-#include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <poll.h>
 #include <sys/ioctl.h>
 
diff --git a/components/finsh/msh.c b/components/finsh/msh.c
index acb5445ad15eabd7cb6c5d6b41145b14f785bde7..abf82e992cef3f08e7fa4c9ab9bceb8dfb6ff53d 100644
--- a/components/finsh/msh.c
+++ b/components/finsh/msh.c
@@ -21,7 +21,10 @@
 #include "msh.h"
 #include "shell.h"
 #ifdef DFS_USING_POSIX
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif /* DFS_USING_POSIX */
 #ifdef RT_USING_MODULE
 #include <dlmodule.h>
diff --git a/components/finsh/msh_file.c b/components/finsh/msh_file.c
index 8022b176fc5287a8b40c04cff5fd7c0140cc5287..28f8d4803f5aa688483a6a96d73f4764d2f40c9a 100644
--- a/components/finsh/msh_file.c
+++ b/components/finsh/msh_file.c
@@ -15,7 +15,10 @@
 
 #include <finsh.h>
 #include "msh.h"
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static int msh_readline(int fd, char *line_buf, int size)
 {
diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index 5398db5370b5b513e459b50fe0888d8dfcf97650..a326ba19785e86c287a24267ee7d2309e7af842b 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -28,7 +28,9 @@
 #include "msh.h"
 
 #ifdef DFS_USING_POSIX
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif /* DFS_USING_POSIX */
 
 /* finsh thread */
diff --git a/components/dfs/include/dfs_posix.h b/components/legacy/dfs/dfs_posix.h
similarity index 100%
rename from components/dfs/include/dfs_posix.h
rename to components/legacy/dfs/dfs_posix.h
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
index d93c79115aeaf020e23322cd0fe3e27860580702..49c294eb8dc6205b743d1c98f548ae0ab3bcd828 100644
--- a/components/libc/compilers/common/sys/ioctl.h
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -12,7 +12,9 @@
 #define __SYS_IOCTL_H__
 
 #include <rtconfig.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #ifdef _WIN32
 #include <winsock.h>
diff --git a/components/libc/libdl/dlmodule.c b/components/libc/libdl/dlmodule.c
index 044c05a9942dc1b21523c1b19773bd56ecc5a8ca..32d6b6b7e7120fa54fa5f0373fbd348d983e727f 100644
--- a/components/libc/libdl/dlmodule.c
+++ b/components/libc/libdl/dlmodule.c
@@ -15,7 +15,9 @@
 #include "dlelf.h"
 
 #if defined(RT_USING_POSIX)
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #define DBG_TAG    "DLMD"
diff --git a/components/libc/posix/io/aio/aio.c b/components/libc/posix/io/aio/aio.c
index 08ef4c634adf897a19efe0b0b4a2350c9e74772c..bf188728f0ca013ba310a1eb43f8c157bbc8f781 100644
--- a/components/libc/posix/io/aio/aio.c
+++ b/components/libc/posix/io/aio/aio.c
@@ -10,7 +10,10 @@
 
 #include <stdint.h>
 #include <rthw.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <dfs_file.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "aio.h"
 
 struct rt_workqueue* aio_queue = NULL;
diff --git a/components/libc/posix/io/mman/mman.c b/components/libc/posix/io/mman/mman.c
index 827f2cbb148bfcfe94f237b77f746099181c82d0..d484b3ed7b5db1735940c3fa2f314dec12157a60 100644
--- a/components/libc/posix/io/mman/mman.c
+++ b/components/libc/posix/io/mman/mman.c
@@ -12,7 +12,9 @@
 #include <stdio.h>
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #include "sys/mman.h"
 
diff --git a/components/libc/posix/io/termios/termios.c b/components/libc/posix/io/termios/termios.c
index 44e0e8085388956c19c2768ec4848e943ad2311e..14d85e9f0c997e68ee040015968da223fa260ccd 100644
--- a/components/libc/posix/io/termios/termios.c
+++ b/components/libc/posix/io/termios/termios.c
@@ -10,7 +10,9 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/errno.h>
 #include "termios.h"
 
diff --git a/components/lwp/lwp.c b/components/lwp/lwp.c
index 9789595ee71f6c2161041e4b85a36d69fa9a78c7..4b91538b68bf4c01a92996cd0b5d0e36a40a4636 100644
--- a/components/lwp/lwp.c
+++ b/components/lwp/lwp.c
@@ -11,7 +11,10 @@
 
 #include <rtthread.h>
 #include <rthw.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #ifndef RT_USING_DFS
     #error  "lwp need file system(RT_USING_DFS)"
diff --git a/components/lwp/lwp_syscall.h b/components/lwp/lwp_syscall.h
index 02599f4317352286a5de6c80d577dde1dad4496c..749406c1caecc35e396c39f29bb18d069d8655a6 100644
--- a/components/lwp/lwp_syscall.h
+++ b/components/lwp/lwp_syscall.h
@@ -13,7 +13,10 @@
 
 #include <stdint.h>
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
diff --git a/components/net/lwip-2.0.2/src/apps/tftp/tftp_port.c b/components/net/lwip-2.0.2/src/apps/tftp/tftp_port.c
index 59e64c7a3b545e830c9205843693cbf765fba407..38221ac580b35b72c2c1f0cd122f3cdc6ba3df69 100644
--- a/components/net/lwip-2.0.2/src/apps/tftp/tftp_port.c
+++ b/components/net/lwip-2.0.2/src/apps/tftp/tftp_port.c
@@ -10,7 +10,9 @@
 
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <lwip/apps/tftp_server.h>
 
 static struct tftp_context ctx;
diff --git a/components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c b/components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c
index 59e64c7a3b545e830c9205843693cbf765fba407..38221ac580b35b72c2c1f0cd122f3cdc6ba3df69 100644
--- a/components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c
+++ b/components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c
@@ -10,7 +10,9 @@
 
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <lwip/apps/tftp_server.h>
 
 static struct tftp_context ctx;
diff --git a/components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c b/components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c
index 59e64c7a3b545e830c9205843693cbf765fba407..38221ac580b35b72c2c1f0cd122f3cdc6ba3df69 100644
--- a/components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c
+++ b/components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c
@@ -10,7 +10,9 @@
 
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <lwip/apps/tftp_server.h>
 
 static struct tftp_context ctx;
diff --git a/components/net/sal_socket/impl/proto_mbedtls.c b/components/net/sal_socket/impl/proto_mbedtls.c
index 79fbdcc5d4ee0ee5c72b918f7005a138e9d292b8..338792c948c7bfa05a869cdcb5b7e54e59b51408 100644
--- a/components/net/sal_socket/impl/proto_mbedtls.c
+++ b/components/net/sal_socket/impl/proto_mbedtls.c
@@ -11,7 +11,9 @@
 #include <rtthread.h>
 
 #ifdef RT_USING_DFS
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #endif
 
 #ifdef SAL_USING_TLS
diff --git a/components/utilities/rt-link/src/rtlink_dev.c b/components/utilities/rt-link/src/rtlink_dev.c
index e91736251d43be74e0ed1cf7f384f2c1425be342..702aed32dacbc6c7acb539753e033e30d3fb9ff6 100644
--- a/components/utilities/rt-link/src/rtlink_dev.c
+++ b/components/utilities/rt-link/src/rtlink_dev.c
@@ -20,7 +20,9 @@
 #define RTLINK_SERV(dev)  (((struct rt_link_device*)dev)->service)
 
 #ifdef RT_USING_POSIX_DEVIO
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <poll.h>
 
 int rtlink_fops_open(struct dfs_fd *fd)
diff --git a/components/utilities/ymodem/ry_sy.c b/components/utilities/ymodem/ry_sy.c
index 3f3b022d7ec6cc6bf4e84d9eb0f5835f903b237a..b77bd7abc2451d053ad8cdde7d544cb7d846a3e8 100644
--- a/components/utilities/ymodem/ry_sy.c
+++ b/components/utilities/ymodem/ry_sy.c
@@ -11,7 +11,10 @@
 
 #include <rtthread.h>
 #include <ymodem.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/components/utilities/zmodem/rz.c b/components/utilities/zmodem/rz.c
index 224d8f95a865c525d817d066ade6b03fcf346308..f4fa4bde6c4ab3953f7c2dab8f8238b07f8f2803 100644
--- a/components/utilities/zmodem/rz.c
+++ b/components/utilities/zmodem/rz.c
@@ -13,8 +13,9 @@
 #include <shell.h>
 #include <rtdef.h>
 #include <dfs.h>
-#include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <stdio.h>
 #include "zdef.h"
 
diff --git a/components/utilities/zmodem/sz.c b/components/utilities/zmodem/sz.c
index e6096756b1a4dc37a93fad9190336c71c9d7397b..bda5d939d41dc9ac1cde10b23b20c2882c7c9f0f 100644
--- a/components/utilities/zmodem/sz.c
+++ b/components/utilities/zmodem/sz.c
@@ -12,8 +12,9 @@
 #include <shell.h>
 #include <rtdef.h>
 #include <dfs.h>
-#include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "zdef.h"
 
 
diff --git a/components/utilities/zmodem/zcore.c b/components/utilities/zmodem/zcore.c
index 75d9647348bb105b8dcc8e665704767013fbf51b..b4e23b585ac7067693d4256d4ce6ae2441d72daf 100644
--- a/components/utilities/zmodem/zcore.c
+++ b/components/utilities/zmodem/zcore.c
@@ -11,8 +11,9 @@
 #include <shell.h>
 #include <rtdef.h>
 #include <dfs.h>
-#include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <stdio.h>
 #include "zdef.h"
 
diff --git a/components/utilities/zmodem/zdevice.c b/components/utilities/zmodem/zdevice.c
index 3a144e79de2b5138e1030bdbcc6d2bab425d09d0..980a15f4f8c90daef68f7609e82f819b47cb5c84 100644
--- a/components/utilities/zmodem/zdevice.c
+++ b/components/utilities/zmodem/zdevice.c
@@ -11,8 +11,9 @@
 #include <shell.h>
 #include <rtdef.h>
 #include <dfs.h>
-#include <dfs_file.h>
-#include <dfs_posix.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include "zdef.h"
 
 
diff --git a/examples/file/listdir.c b/examples/file/listdir.c
index 9649347734c1d13a659e176ddf475dd565880847..d858a00bff3f7bdb4a7f144032da7ee0aaa7170e 100644
--- a/examples/file/listdir.c
+++ b/examples/file/listdir.c
@@ -9,7 +9,11 @@
  * 2020-04-12     Jianjia Ma   add msh cmd
  */
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 void list_dir(const char* path)
 {
diff --git a/examples/file/readspeed.c b/examples/file/readspeed.c
index 5f4cad3190014b79f532def700f7a6dedad5e178..dfa68ceb32b85963491961f5b3057ab3f4bddabb 100644
--- a/examples/file/readspeed.c
+++ b/examples/file/readspeed.c
@@ -10,7 +10,11 @@
  */
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 void readspeed(const char* filename, int block_size)
 {
diff --git a/examples/file/readwrite.c b/examples/file/readwrite.c
index d1dd5bc03820e0a5876149ccc1eff186f63bf779..5d0defeaa9ac0cd53553bd102fe2f4fde94d7685 100644
--- a/examples/file/readwrite.c
+++ b/examples/file/readwrite.c
@@ -10,7 +10,11 @@
  */
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 #define TEST_DATA_LEN     120
 
diff --git a/examples/file/seekdir.c b/examples/file/seekdir.c
index efadd3a1c89d3cff857ea446c28b35f03ba476f2..5198a8056b16c37b93a5c5aad15a805b3e320dfc 100644
--- a/examples/file/seekdir.c
+++ b/examples/file/seekdir.c
@@ -8,7 +8,11 @@
  * 2011-06-02     Bernard      first version
  * 2020-04-12     Jianjia Ma   add msh cmd
  */
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 void seekdir_test(void)
 {
diff --git a/examples/file/writespeed.c b/examples/file/writespeed.c
index f76027d28bd32349db52604a52243f9ae7164d45..87a4c329bd163961a77f093aab5195e07bf500a6 100644
--- a/examples/file/writespeed.c
+++ b/examples/file/writespeed.c
@@ -9,7 +9,11 @@
  * 2020-04-12     Jianjia Ma   add msh cmd
  */
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 void writespeed(const char* filename, int total_length, int block_size)
 {
diff --git a/examples/network/chargen.c b/examples/network/chargen.c
index 3b4feaca9ee9dc0d31b5981e1539992ff06dd408..69a6b13a5da01f488776156b535d06fd4422bb33 100644
--- a/examples/network/chargen.c
+++ b/examples/network/chargen.c
@@ -12,7 +12,11 @@
 
 #ifdef SAL_USING_POSIX
 #include <sys/select.h> // only dfs_net
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #else
 #define read        lwip_read
 #define write       lwip_write
diff --git a/examples/rt-link/rtlink_dev_example.c b/examples/rt-link/rtlink_dev_example.c
index 51b6432d9f3b7369267421f94082e5103f25adbb..027292769d754cb1c8c9568cd5655f91c2102e11 100644
--- a/examples/rt-link/rtlink_dev_example.c
+++ b/examples/rt-link/rtlink_dev_example.c
@@ -46,7 +46,11 @@ static rt_err_t rtlink_dev_tx_done(rt_device_t dev, void *buffer)
 }
 
 #ifdef RT_USING_POSIX_DEVIO
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <poll.h>
 #include <sys/select.h>
 
diff --git a/examples/test/fs_test.c b/examples/test/fs_test.c
index a86bbd6ac23fc8cf78a7d91b1e97be1d27623ffa..7fd70284cf898300e885a81159f556c751680aed 100644
--- a/examples/test/fs_test.c
+++ b/examples/test/fs_test.c
@@ -11,7 +11,11 @@
  */
 
 #include <rtthread.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 
 static rt_uint32_t stop_flag = 0;
 static rt_thread_t fsrw1_thread = RT_NULL;
diff --git a/examples/ymodem/tofile.c b/examples/ymodem/tofile.c
index 35dca2f2c1c3092dac7ed2f80c24e5738415046e..8fb2d0c06bceb245ba0005e31da721052ded12c2 100644
--- a/examples/ymodem/tofile.c
+++ b/examples/ymodem/tofile.c
@@ -9,7 +9,11 @@
 
 #include <rtthread.h>
 #include <ymodem.h>
-#include <dfs_posix.h>
+#include <dfs_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
 #include <stdlib.h>
 
 #include <board.h>