Merge remote-tracking branch 'remotes/rtt_github/master'

25 files changed, 422 insertions, 185 deletions

diff --git a/components/libc/compilers/armlibc/libc.c b/components/libc/compilers/armlibc/libc.c
index 971ddb8d49..889c687309 100644
--- a/components/libc/compilers/armlibc/libc.c
+++ b/components/libc/compilers/armlibc/libc.c
@@ -7,11 +7,8 @@
  * Date           Author       Notes
  * 2017/10/15     bernard      the first version
  */
-#include <stdio.h>
-#include <stdlib.h>
-
+#include <fcntl.h>
 #include <rtthread.h>
-
 #include "libc.h"
 
 #ifdef RT_USING_PTHREADS
diff --git a/components/libc/compilers/armlibc/mem_std.c b/components/libc/compilers/armlibc/mem_std.c
index c350aa68fa..fbfd17eee1 100644
--- a/components/libc/compilers/armlibc/mem_std.c
+++ b/components/libc/compilers/armlibc/mem_std.c
@@ -7,7 +7,8 @@
  * 2014-08-03     bernard      Add file header.
  */
 
-#include "rtthread.h"
+#include <rtthread.h>
+#include <stddef.h>
 
 #ifdef RT_USING_HEAP
 
diff --git a/components/libc/compilers/common/fcntl.h b/components/libc/compilers/common/fcntl.h
new file mode 100644
index 0000000000..b98f540627
--- /dev/null
+++ b/components/libc/compilers/common/fcntl.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-09-02     Meco Man     First version
+ */
+#ifndef __FCNTL_H__
+#define __FCNTL_H__
+
+#include <sys/types.h>
+
+#if defined(_WIN32)
+#define O_ACCMODE   (_O_RDONLY | _O_WRONLY | _O_RDWR)
+#endif
+
+#define O_RDONLY         00
+#define O_WRONLY         01
+#define O_RDWR           02
+
+#define O_CREAT        0100
+#define O_EXCL         0200
+#define O_NOCTTY       0400
+#define O_TRUNC       01000
+#define O_APPEND      02000
+#define O_NONBLOCK    04000
+#define O_DSYNC      010000
+#define O_SYNC     04010000
+#define O_RSYNC    04010000
+#define O_BINARY    0100000
+#define O_DIRECTORY 0200000
+#define O_NOFOLLOW  0400000
+#define O_CLOEXEC  02000000
+#define O_ASYNC      020000
+#define O_DIRECT     040000
+#define O_LARGEFILE 0100000
+#define O_NOATIME  01000000
+#define O_PATH    010000000
+#define O_TMPFILE 020200000
+#define O_NDELAY O_NONBLOCK
+#define O_SEARCH  O_PATH
+#define O_EXEC    O_PATH
+
+#define O_ACCMODE (03|O_SEARCH)
+
+#define F_DUPFD  0
+#define F_GETFD  1
+#define F_SETFD  2
+#define F_GETFL  3
+#define F_SETFL  4
+
+#define F_SETOWN 8
+#define F_GETOWN 9
+#define F_SETSIG 10
+#define F_GETSIG 11
+
+#define F_GETLK 12
+#define F_SETLK 13
+#define F_SETLKW 14
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
+
+#define F_GETOWNER_UIDS 17
+
+int open(const char *file, int flags, ...);
+int fcntl(int fildes, int cmd, ...);
+int creat(const char *, mode_t);
+
+#endif
diff --git a/components/libc/compilers/common/none-gcc/SConscript b/components/libc/compilers/common/nogcc/SConscript
index c766c8f82d..c766c8f82d 100644
--- a/components/libc/compilers/common/none-gcc/SConscript
+++ b/components/libc/compilers/common/nogcc/SConscript
diff --git a/components/libc/compilers/common/none-gcc/readme.md b/components/libc/compilers/common/nogcc/readme.md
index b10940d003..b10940d003 100644
--- a/components/libc/compilers/common/none-gcc/readme.md
+++ b/components/libc/compilers/common/nogcc/readme.md
diff --git a/components/libc/compilers/common/none-gcc/sys/errno.h b/components/libc/compilers/common/nogcc/sys/errno.h
index ff1abca387..ff1abca387 100644
--- a/components/libc/compilers/common/none-gcc/sys/errno.h
+++ b/components/libc/compilers/common/nogcc/sys/errno.h
diff --git a/components/libc/compilers/common/sys/select.h b/components/libc/compilers/common/nogcc/sys/select.h
index db42b6ebcc..575ad3a1b5 100644
--- a/components/libc/compilers/common/sys/select.h
+++ b/components/libc/compilers/common/nogcc/sys/select.h
@@ -13,6 +13,7 @@
 
 #include <rtconfig.h>
 #include <sys/types.h>
+#include <sys/time.h>
 
 #ifndef  FD_SETSIZE
 #define  FD_SETSIZE  32
@@ -46,4 +47,6 @@ typedef struct _types_fd_set {
 #define FD_ZERO(p)      memset((void*)(p), 0, sizeof(*(p)))
 #endif /* _SYS_TYPES_FD_SET */
 
+int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
+
 #endif /* __SYS_SELECT_H__ */
diff --git a/components/libc/compilers/common/nogcc/sys/stat.h b/components/libc/compilers/common/nogcc/sys/stat.h
new file mode 100644
index 0000000000..107c15decf
--- /dev/null
+++ b/components/libc/compilers/common/nogcc/sys/stat.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-09-02     Meco Man     First version
+ */
+
+#ifndef __SYS_STAT_H__
+#define __SYS_STAT_H__
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#define S_IFMT               00170000
+#define S_IFSOCK             0140000
+#define S_IFLNK              0120000
+#define S_IFREG              0100000
+#define S_IFBLK              0060000
+#define S_IFDIR              0040000
+#define S_IFCHR              0020000
+#define S_IFIFO              0010000
+#define S_ISUID              0004000
+#define S_ISGID              0002000
+#define S_ISVTX              0001000
+
+#define S_ISLNK(m)           (((m) & S_IFMT) == S_IFLNK)
+#define S_ISREG(m)           (((m) & S_IFMT) == S_IFREG)
+#define S_ISDIR(m)           (((m) & S_IFMT) == S_IFDIR)
+#define S_ISCHR(m)           (((m) & S_IFMT) == S_IFCHR)
+#define S_ISBLK(m)           (((m) & S_IFMT) == S_IFBLK)
+#define S_ISFIFO(m)          (((m) & S_IFMT) == S_IFIFO)
+#define S_ISSOCK(m)          (((m) & S_IFMT) == S_IFSOCK)
+
+#define S_IRWXU              00700
+#define S_IRUSR              00400
+#define S_IWUSR              00200
+#define S_IXUSR              00100
+
+#define S_IRWXG              00070
+#define S_IRGRP              00040
+#define S_IWGRP              00020
+#define S_IXGRP              00010
+
+#define S_IRWXO              00007
+#define S_IROTH              00004
+#define S_IWOTH              00002
+#define S_IXOTH              00001
+
+struct stat
+{
+    struct rt_device *st_dev;
+    uint16_t  st_ino;
+    uint16_t  st_mode;
+    uint16_t  st_nlink;
+    uint16_t  st_uid;
+    uint16_t  st_gid;
+    struct rt_device *st_rdev;
+    uint32_t  st_size;
+    time_t    st_atime;
+    long      st_spare1;
+    time_t    st_mtime;
+    long      st_spare2;
+    time_t    st_ctime;
+    long      st_spare3;
+    uint32_t  st_blksize;
+    uint32_t  st_blocks;
+    long      st_spare4[2];
+};
+
+int    chmod(const char *, mode_t);
+int    fchmod(int, mode_t);
+int    fstat(int, struct stat *);
+int    lstat(const char *, struct stat *);
+int    mkdir(const char *, mode_t);
+int    mkfifo(const char *, mode_t);
+int    mknod(const char *, mode_t, dev_t);
+int    stat(const char *, struct stat *);
+mode_t umask(mode_t);
+
+#endif
diff --git a/components/libc/compilers/common/none-gcc/sys/types.h b/components/libc/compilers/common/nogcc/sys/types.h
index f7f563035c..f7f563035c 100644
--- a/components/libc/compilers/common/none-gcc/sys/types.h
+++ b/components/libc/compilers/common/nogcc/sys/types.h
diff --git a/components/libc/compilers/common/nogcc/sys/unistd.h b/components/libc/compilers/common/nogcc/sys/unistd.h
new file mode 100644
index 0000000000..6195c4c2aa
--- /dev/null
+++ b/components/libc/compilers/common/nogcc/sys/unistd.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-12-16     Meco Man     add usleep
+ * 2021-09-11     Meco Man     move functions from dfs_posix.h to unistd.h
+ */
+#ifndef __SYS_UNISTD_H__
+#define __SYS_UNISTD_H__
+
+#include <stddef.h>
+#include "types.h" /* <sys/types.h> */
+
+#define STDIN_FILENO    0       /* standard input file descriptor */
+#define STDOUT_FILENO   1       /* standard output file descriptor */
+#define STDERR_FILENO   2       /* standard error file descriptor */
+
+ssize_t read(int fd, void *buf, size_t len);
+ssize_t write(int fd, const void *buf, size_t len);
+off_t lseek(int fd, off_t offset, int whence);
+int fsync(int fildes);
+int unlink(const char *pathname);
+int close(int d);
+int ftruncate(int fd, off_t length);
+int rmdir(const char *path);
+int chdir(const char *path);
+char *getcwd(char *buf, size_t size);
+int access(const char *path, int amode);
+int pipe(int fildes[2]);
+int isatty(int fd);
+char *ttyname(int desc);
+unsigned int sleep(unsigned int seconds);
+int usleep(useconds_t usec);
+pid_t gettid(void);
+pid_t getpid(void);
+pid_t getppid(void);
+uid_t getuid(void);
+uid_t geteuid(void);
+gid_t getgid(void);
+gid_t getegid(void);
+
+#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/none-gcc/unistd.h b/components/libc/compilers/common/nogcc/unistd.h
index cd77a12e3b..cd77a12e3b 100644
--- a/components/libc/compilers/common/none-gcc/unistd.h
+++ b/components/libc/compilers/common/nogcc/unistd.h
diff --git a/components/libc/compilers/common/none-gcc/sys/stat.h b/components/libc/compilers/common/none-gcc/sys/stat.h
deleted file mode 100644
index c8f65df435..0000000000
--- a/components/libc/compilers/common/none-gcc/sys/stat.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-
- #ifndef __SYS_STAT_H__
- #define __SYS_STAT_H__
-
- #endif
diff --git a/components/libc/compilers/common/none-gcc/sys/unistd.h b/components/libc/compilers/common/none-gcc/sys/unistd.h
deleted file mode 100644
index ea2d674b0f..0000000000
--- a/components/libc/compilers/common/none-gcc/sys/unistd.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef __SYS_UNISTD_H__
-#define __SYS_UNISTD_H__
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-
-#ifndef O_RDONLY
-#define O_RDONLY    0       /* +1 == FREAD */
-#endif
-#ifndef O_WRONLY
-#define O_WRONLY    1       /* +1 == FWRITE */
-#endif
-#ifndef O_RDWR
-#define O_RDWR      2       /* +1 == FREAD|FWRITE */
-#endif
-#ifndef O_APPEND
-#define O_APPEND    _FAPPEND
-#endif
-#ifndef O_CREAT
-#define O_CREAT     _FCREAT
-#endif
-#ifndef O_TRUNC
-#define O_TRUNC     _FTRUNC
-#endif
-#ifndef O_EXCL
-#define O_EXCL      _FEXCL
-#endif
-#ifndef O_SYNC
-#define O_SYNC      _FSYNC
-#endif
-
-#endif
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-pid_t gettid(void);
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/partial/SConscript b/components/libc/compilers/common/partial/SConscript
new file mode 100644
index 0000000000..4c815c49b8
--- /dev/null
+++ b/components/libc/compilers/common/partial/SConscript
@@ -0,0 +1,15 @@
+# RT-Thread building script for bridge
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/components/libc/compilers/common/partial/ls/SConscript b/components/libc/compilers/common/partial/ls/SConscript
new file mode 100644
index 0000000000..2665bee078
--- /dev/null
+++ b/components/libc/compilers/common/partial/ls/SConscript
@@ -0,0 +1,23 @@
+from shutil import copy
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+
+if rtconfig.PLATFORM == 'gcc' and GetDepend('SOC_LS'):
+    try:
+        # There is no 'sys/select.h' in these bsp's gcc toolchain; thus, we need to copy this file from 'nogcc/sys/select.h'
+        copy("../../nogcc/sys/select.h", "./sys/select.h")
+    except:
+        pass
+
+    if GetDepend('RT_USING_LIBC'):
+        src += Glob('*.c')
+
+    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/components/libc/compilers/common/partial/ls/readme.md b/components/libc/compilers/common/partial/ls/readme.md
new file mode 100644
index 0000000000..fa68e1e84a
--- /dev/null
+++ b/components/libc/compilers/common/partial/ls/readme.md
@@ -0,0 +1,9 @@
+This folder will be included when compiling the BSPs as follow:
+
+- ls1bdev
+- ls1cdev
+- ls2kdev
+
+These files will be generated by scons automatically , and **DO NOT** change them:
+
+- sys/select.h
\ No newline at end of file
diff --git a/components/libc/compilers/common/partial/ls/sys/select.h b/components/libc/compilers/common/partial/ls/sys/select.h
new file mode 100644
index 0000000000..575ad3a1b5
--- /dev/null
+++ b/components/libc/compilers/common/partial/ls/sys/select.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-07-21     Meco Man     The first version
+ */
+
+#ifndef __SYS_SELECT_H__
+#define __SYS_SELECT_H__
+
+#include <rtconfig.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#ifndef  FD_SETSIZE
+#define  FD_SETSIZE  32
+#endif
+
+#ifdef SAL_USING_POSIX
+#ifdef FD_SETSIZE
+#undef FD_SETSIZE
+#endif
+#define FD_SETSIZE      DFS_FD_MAX
+#endif /* SAL_USING_POSIX */
+
+#define   NBBY    8       /* number of bits in a byte */
+
+typedef long    fd_mask;
+
+#define   NFDBITS (sizeof (fd_mask) * NBBY)   /* bits per mask */
+#ifndef   howmany
+#define   howmany(x,y)    (((x)+((y)-1))/(y))
+#endif
+
+#ifndef _SYS_TYPES_FD_SET /* MIPS */
+typedef struct _types_fd_set {
+    fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
+} _types_fd_set;
+#define fd_set _types_fd_set
+
+#define FD_SET(n, p)    ((p)->fds_bits[(n)/NFDBITS] |= (1L << ((n) % NFDBITS)))
+#define FD_CLR(n, p)    ((p)->fds_bits[(n)/NFDBITS] &= ~(1L << ((n) % NFDBITS)))
+#define FD_ISSET(n, p)  ((p)->fds_bits[(n)/NFDBITS] & (1L << ((n) % NFDBITS)))
+#define FD_ZERO(p)      memset((void*)(p), 0, sizeof(*(p)))
+#endif /* _SYS_TYPES_FD_SET */
+
+int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
+
+#endif /* __SYS_SELECT_H__ */
diff --git a/components/libc/compilers/common/poll.h b/components/libc/compilers/common/poll.h
new file mode 100644
index 0000000000..aea73d6eaf
--- /dev/null
+++ b/components/libc/compilers/common/poll.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-09-11     Meco Man     First version
+ */
+#ifndef __POLL_H__
+#define __POLL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(POLLIN) && !defined(POLLOUT)
+#define POLLIN          (0x01)
+#define POLLRDNORM      (0x01)
+#define POLLRDBAND      (0x01)
+#define POLLPRI         (0x01)
+
+#define POLLOUT         (0x02)
+#define POLLWRNORM      (0x02)
+#define POLLWRBAND      (0x02)
+
+#define POLLERR         (0x04)
+#define POLLHUP         (0x08)
+#define POLLNVAL        (0x10)
+
+typedef unsigned int nfds_t;
+
+struct pollfd
+{
+    int fd;
+    short events;
+    short revents;
+};
+#endif /* !defined(POLLIN) && !defined(POLLOUT) */
+
+#define POLLMASK_DEFAULT (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
+
+int poll(struct pollfd *fds, nfds_t nfds, int timeout);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __POLL_H__ */
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
index 51f51f2ea4..b926a71875 100644
--- a/components/libc/compilers/common/sys/ioctl.h
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -235,4 +235,6 @@ struct winsize {
 #define SIOCDEVPRIVATE      0x89F0
 #define SIOCPROTOPRIVATE    0x89E0
 
+int ioctl(int fildes, int cmd, ...);
+
 #endif
diff --git a/components/libc/compilers/common/sys/statfs.h b/components/libc/compilers/common/sys/statfs.h
index 0996af9a18..0c6dc44df3 100644
--- a/components/libc/compilers/common/sys/statfs.h
+++ b/components/libc/compilers/common/sys/statfs.h
@@ -6,16 +6,19 @@
  * Change Logs:
  * Date           Author       Notes
  */
-#ifndef __RTT_STATFS_H__
-#define __RTT_STATFS_H__
+#ifndef __SYS_STATFS_H__
+#define __SYS_STATFS_H__
 
-#include <rtthread.h>
+#include <stddef.h>
 
 struct statfs
 {
-    rt_size_t f_bsize;   /* block size */
-    rt_size_t f_blocks;  /* total data blocks in file system */
-    rt_size_t f_bfree;   /* free blocks in file system */
+    size_t f_bsize;   /* block size */
+    size_t f_blocks;  /* total data blocks in file system */
+    size_t f_bfree;   /* free blocks in file system */
 };
 
+int statfs(const char *path, struct statfs *buf);
+int fstatfs(int fd, struct statfs *buf);
+
 #endif
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 95605d47c7..ecf6e85ac6 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -8,8 +8,8 @@
  * 2020-09-07     Meco Man     combine gcc armcc iccarm
  * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
  */
-#ifndef _SYS_TIME_H_
-#define _SYS_TIME_H_
+#ifndef __SYS_TIME_H__
+#define __SYS_TIME_H__
 
 #include <rtconfig.h>
 #include <rtdef.h>
@@ -74,7 +74,7 @@ struct timespec {
 };
 #endif
 
-/* posix clock and timer */
+/* POSIX clock and timer */
 #define MILLISECOND_PER_SECOND  1000UL
 #define MICROSECOND_PER_SECOND  1000000UL
 #define NANOSECOND_PER_SECOND   1000000000UL
diff --git a/components/libc/compilers/common/none-gcc/fcntl.h b/components/libc/compilers/common/sys/vfs.h
index f247b926e9..00739ab1c6 100644
--- a/components/libc/compilers/common/none-gcc/fcntl.h
+++ b/components/libc/compilers/common/sys/vfs.h
@@ -5,14 +5,11 @@
  *
  * Change Logs:
  * Date           Author       Notes
+ * 2021-09-11     Meco Man     First version
  */
-#ifndef FCNTL_H__
-#define FCNTL_H__
+#ifndef __SYS_VFS_H__
+#define __SYS_VFS_H__
 
-#include <rtconfig.h>
-
-#ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
+#include "statfs.h" /* <sys/statfs.h> */
 
 #endif
diff --git a/components/libc/compilers/dlib/libc.c b/components/libc/compilers/dlib/libc.c
index d0dca7c5f6..f540ac955f 100644
--- a/components/libc/compilers/dlib/libc.c
+++ b/components/libc/compilers/dlib/libc.c
@@ -7,11 +7,8 @@
  * Date           Author       Notes
  * 2017/10/15     bernard      the first version
  */
-#include <stdio.h>
-#include <stdlib.h>
-
+#include <fcntl.h>
 #include <rtthread.h>
-
 #include "libc.h"
 
 #ifdef RT_USING_PTHREADS
diff --git a/components/libc/compilers/newlib/stdio.c b/components/libc/compilers/newlib/stdio.c
index ce5bdb75cb..baccafad87 100644
--- a/components/libc/compilers/newlib/stdio.c
+++ b/components/libc/compilers/newlib/stdio.c
@@ -9,7 +9,7 @@
  */
 #include <stdio.h>
 #include <stdlib.h>
-
+#include <fcntl.h>
 #include <rtthread.h>
 #include "libc.h"
 
diff --git a/components/libc/libdl/dlelf.h b/components/libc/libdl/dlelf.h
index 540fe2c8aa..339e172bb4 100644
--- a/components/libc/libdl/dlelf.h
+++ b/components/libc/libdl/dlelf.h
@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
- * Date           Author      Notes
- * 2018/08/29     Bernard     first version
- * 2021/04/23     chunyexixiaoyu    distinguish 32-bit and 64-bit
+ * Date           Author          Notes
+ * 2018/08/29     Bernard         first version
+ * 2021/04/23     chunyexixiaoyu  distinguish 32-bit and 64-bit
  */
 
 #ifndef DL_ELF_H__
@@ -20,20 +20,15 @@ typedef rt_int32_t              Elf32_Sword;   /* Signed large integer */
 typedef rt_uint32_t             Elf32_Word;    /* Unsigned large integer */
 typedef rt_uint16_t             Elf32_Half;    /* Unsigned medium integer */
 
-typedef rt_uint64_t	            Elf64_Addr;
-typedef rt_uint16_t	            Elf64_Half;
-typedef rt_int16_t	            Elf64_SHalf;
-typedef rt_uint64_t	            Elf64_Off;
-typedef rt_int32_t	            Elf64_Sword;
-typedef rt_uint32_t	            Elf64_Word;
-typedef rt_uint64_t	            Elf64_Xword;
-typedef rt_int64_t	            Elf64_Sxword;
-typedef uint16_t                Elf64_Section;
-
-
-
-
-
+typedef rt_uint64_t             Elf64_Addr;
+typedef rt_uint16_t             Elf64_Half;
+typedef rt_int16_t              Elf64_SHalf;
+typedef rt_uint64_t             Elf64_Off;
+typedef rt_int32_t              Elf64_Sword;
+typedef rt_uint32_t             Elf64_Word;
+typedef rt_uint64_t             Elf64_Xword;
+typedef rt_int64_t              Elf64_Sxword;
+typedef rt_uint16_t             Elf64_Section;
 
 /* e_ident[] magic number */
 #define ELFMAG0                 0x7f           /* e_ident[EI_MAG0] */
@@ -91,24 +86,24 @@ typedef struct elfhdr
                                                   header string table" entry offset */
 } Elf32_Ehdr;
 
-
-typedef struct elf64_hdr {
-  unsigned char     e_ident[EI_NIDENT];        /* ELF Identification */ 
-  Elf64_Half        e_type;                    /* object file type */
-  Elf64_Half        e_machine;                 /* machine */
-  Elf64_Word        e_version;                 /* object file version */
-  Elf64_Addr        e_entry;                   /* virtual entry point */ 
-  Elf64_Off         e_phoff;                   /* program header table offset */ 
-  Elf64_Off         e_shoff;                   /* section header table offset */ 
-  Elf64_Word        e_flags;                   /* processor-specific flags */
-  Elf64_Half        e_ehsize;                  /* ELF header size */
-  Elf64_Half        e_phentsize;               /* program header entry size */
-  Elf64_Half        e_phnum;                   /* number of program header entries */
-  Elf64_Half        e_shentsize;               /* section header entry size */
-  Elf64_Half        e_shnum;                   /* number of section header entries */
-  Elf64_Half        e_shstrndx;                /* section header table's "section
+typedef struct elf64_hdr
+{
+    unsigned char     e_ident[EI_NIDENT];        /* ELF Identification */
+    Elf64_Half        e_type;                    /* object file type */
+    Elf64_Half        e_machine;                 /* machine */
+    Elf64_Word        e_version;                 /* object file version */
+    Elf64_Addr        e_entry;                   /* virtual entry point */
+    Elf64_Off         e_phoff;                   /* program header table offset */
+    Elf64_Off         e_shoff;                   /* section header table offset */
+    Elf64_Word        e_flags;                   /* processor-specific flags */
+    Elf64_Half        e_ehsize;                  /* ELF header size */
+    Elf64_Half        e_phentsize;               /* program header entry size */
+    Elf64_Half        e_phnum;                   /* number of program header entries */
+    Elf64_Half        e_shentsize;               /* section header entry size */
+    Elf64_Half        e_shnum;                   /* number of section header entries */
+    Elf64_Half        e_shstrndx;                /* section header table's "section
                                                 header string table" entry offset */
-} Elf64_Ehdr;                                   
+} Elf64_Ehdr;
 
 /* Section Header */
 typedef struct
@@ -128,19 +123,18 @@ typedef struct
 
 typedef struct
 {
-  Elf64_Word        sh_name;                   /* Section name (string tbl index) */
-  Elf64_Word        sh_type;                   /* Section type */
-  Elf64_Xword       sh_flags;                  /* Section flags */
-  Elf64_Addr        sh_addr;                   /* Section virtual addr at execution */
-  Elf64_Off         sh_offset;                 /* Section file offset */
-  Elf64_Xword       sh_size;                   /* Section size in bytes */
-  Elf64_Word        sh_link;                   /* Link to another section */
-  Elf64_Word        sh_info;                   /* Additional section information */
-  Elf64_Xword       sh_addralign;              /* Section alignment */
-  Elf64_Xword       sh_entsize;                /* Entry size if section holds table */
+    Elf64_Word        sh_name;                   /* Section name (string tbl index) */
+    Elf64_Word        sh_type;                   /* Section type */
+    Elf64_Xword       sh_flags;                  /* Section flags */
+    Elf64_Addr        sh_addr;                   /* Section virtual addr at execution */
+    Elf64_Off         sh_offset;                 /* Section file offset */
+    Elf64_Xword       sh_size;                   /* Section size in bytes */
+    Elf64_Word        sh_link;                   /* Link to another section */
+    Elf64_Word        sh_info;                   /* Additional section information */
+    Elf64_Xword       sh_addralign;              /* Section alignment */
+    Elf64_Xword       sh_entsize;                /* Entry size if section holds table */
 } Elf64_Shdr;
 
-
 /* Section names */
 #define ELF_BSS                 ".bss"         /* uninitialized data */
 #define ELF_DATA                ".data"        /* initialized data */
@@ -176,19 +170,16 @@ typedef struct elf32_sym
     Elf32_Half    st_shndx;                    /* section header index */
 } Elf32_Sym;
 
-
 typedef struct
 {
-  Elf64_Word        st_name;                   /* Symbol name (string tbl index) */
-  unsigned char     st_info;                   /* Symbol type and binding */
-  unsigned char     st_other;                  /* Symbol visibility */
-  Elf64_Section     st_shndx;                  /* Section index */
-  Elf64_Addr        st_value;                  /* Symbol value */
-  Elf64_Xword       st_size;                   /* Symbol size */
+    Elf64_Word        st_name;                   /* Symbol name (string tbl index) */
+    unsigned char     st_info;                   /* Symbol type and binding */
+    unsigned char     st_other;                  /* Symbol visibility */
+    Elf64_Section     st_shndx;                  /* Section index */
+    Elf64_Addr        st_value;                  /* Symbol value */
+    Elf64_Xword       st_size;                   /* Symbol size */
 } Elf64_Sym;
 
-
-
 #define STB_LOCAL               0              /* BIND */
 #define STB_GLOBAL              1
 #define STB_WEAK                2
@@ -249,8 +240,6 @@ typedef struct
 #define ELF32_R_TYPE(i)         ((unsigned char) (i))
 #define ELF32_R_INFO(s,t)       (((s) << 8) + (unsigned char)(t))
 
-
-
 #define ELF64_R_SYM(i)                        ((i) >> 32)
 #define ELF64_R_TYPE(i)                        ((i) & 0xffffffff)
 #define ELF64_R_INFO(sym,type)                ((((Elf64_Xword) (sym)) << 32) + (type))
@@ -301,7 +290,6 @@ typedef struct
     Elf32_Word p_align;                        /* memory alignment */
 } Elf32_Phdr;
 
-
 typedef struct
 {
     Elf64_Word   p_type;                       /* Segment type */
@@ -314,10 +302,6 @@ typedef struct
     Elf64_Xword  p_align;                      /* Segment alignment */
 } Elf64_Phdr;
 
-
-
-
-
 /* p_type */
 #define PT_NULL                 0
 #define PT_LOAD                 1
@@ -389,10 +373,9 @@ typedef Elf64_Sym       Elf_Sym;
 typedef Elf64_Rela      Elf_Rel;
 typedef Elf64_Addr      Elf_Addr;
 #endif
-int dlmodule_relocate(struct rt_dlmodule *module, Elf_Rel *rel, Elf_Addr sym_val);
-rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_ptr);
-rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module_ptr);
-
 
+int dlmodule_relocate(struct rt_dlmodule *module, Elf_Rel *rel, Elf_Addr sym_val);
+rt_err_t dlmodule_load_shared_object(struct rt_dlmodule *module, void *module_ptr);
+rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule *module, void *module_ptr);
 
 #endif