[libc] implement extension standard C functions (#6044)

* implement extension standard C functions

7 files changed, 0 insertions, 831 deletions

diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
deleted file mode 100644
index 4f9287304e..0000000000
--- a/components/libc/compilers/common/sys/ioctl.h
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     First Version
- */
-
-#ifndef __SYS_IOCTL_H__
-#define __SYS_IOCTL_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct winsize
-{
-    unsigned short ws_row;
-    unsigned short ws_col;
-    unsigned short ws_xpixel;
-    unsigned short ws_ypixel;
-};
-
-/*
- * Direction bits, which any architecture can choose to override
- * before including this file.
- */
-
-#ifndef _IOC_NONE
-#define _IOC_NONE  0U
-#endif
-
-#ifndef _IOC_WRITE
-#define _IOC_WRITE 1U
-#endif
-
-#ifndef _IOC_READ
-#define _IOC_READ  2U
-#endif
-
-#ifndef _IOC
-#define _IOC(a,b,c,d) (((a)<<30) | ((b)<<8) | (c) | ((d)<<16))
-#endif
-
-#ifndef _IO
-#define _IO(a,b)    _IOC(_IOC_NONE, (a), (b), 0)
-#endif
-
-#ifndef _IOW
-#define _IOW(a,b,c) _IOC(_IOC_WRITE, (a), (b), sizeof(c))
-#endif
-
-#ifndef _IOR
-#define _IOR(a,b,c) _IOC(_IOC_READ, (a), (b), sizeof(c))
-#endif
-
-#ifndef _IOWR
-#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE, (a), (b), sizeof(c))
-#endif
-
-#ifndef FIONREAD
-#define FIONREAD    _IOR('f', 127, int) /* get # bytes to read */
-#endif
-
-#ifndef FIONBIO
-#define FIONBIO     _IOW('f', 126, int) /* set/clear non-blocking i/o */
-#endif
-
-#ifndef FIOASYNC
-#define FIOASYNC    _IOW('f', 125, int) /* set/clear async i/o */
-#endif
-
-#ifndef FIONWRITE
-#define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding in send queue */
-#endif
-
-/* Socket I/O Controls */
-#ifndef SIOCSHIWAT
-#define SIOCSHIWAT  _IOW('s',  0, int)  /* set high watermark */
-#define SIOCGHIWAT  _IOR('s',  1, int)  /* get high watermark */
-#define SIOCSLOWAT  _IOW('s',  2, int)  /* set low watermark */
-#define SIOCGLOWAT  _IOR('s',  3, int)  /* get low watermark */
-#define SIOCATMARK  _IOR('s',  7, int)  /* at oob mark? */
-#endif
-
-#define TCGETS      0x5401
-#define TCSETS      0x5402
-#define TCSETSW     0x5403
-#define TCSETSF     0x5404
-#define TCGETA      0x5405
-#define TCSETA      0x5406
-#define TCSETAW     0x5407
-#define TCSETAF     0x5408
-#define TCSBRK      0x5409
-#define TCXONC      0x540A
-#define TCFLSH      0x540B
-#define TIOCEXCL    0x540C
-#define TIOCNXCL    0x540D
-#define TIOCSCTTY   0x540E
-#define TIOCGPGRP   0x540F
-#define TIOCSPGRP   0x5410
-#define TIOCOUTQ    0x5411
-#define TIOCSTI     0x5412
-#define TIOCGWINSZ  0x5413
-#define TIOCSWINSZ  0x5414
-#define TIOCMGET    0x5415
-#define TIOCMBIS    0x5416
-#define TIOCMBIC    0x5417
-#define TIOCMSET    0x5418
-#define TIOCGSOFTCAR    0x5419
-#define TIOCSSOFTCAR    0x541A
-#define TIOCINQ     FIONREAD
-#define TIOCLINUX   0x541C
-#define TIOCCONS    0x541D
-#define TIOCGSERIAL 0x541E
-#define TIOCSSERIAL 0x541F
-#define TIOCPKT     0x5420
-#define TIOCNOTTY   0x5422
-#define TIOCSETD    0x5423
-#define TIOCGETD    0x5424
-#define TCSBRKP     0x5425
-#define TIOCSBRK    0x5427
-#define TIOCCBRK    0x5428
-#define TIOCGSID    0x5429
-#define TIOCGRS485  0x542E
-#define TIOCSRS485  0x542F
-#define TIOCGPTN    0x80045430
-#define TIOCSPTLCK  0x40045431
-#define TIOCGDEV    0x80045432
-#define TCGETX      0x5432
-#define TCSETX      0x5433
-#define TCSETXF     0x5434
-#define TCSETXW     0x5435
-#define TIOCSIG     0x40045436
-#define TIOCVHANGUP 0x5437
-#define TIOCGPKT    0x80045438
-#define TIOCGPTLCK  0x80045439
-#define TIOCGEXCL   0x80045440
-
-#define FIONCLEX    0x5450
-#define FIOCLEX     0x5451
-
-#define TIOCSERCONFIG   0x5453
-#define TIOCSERGWILD    0x5454
-#define TIOCSERSWILD    0x5455
-#define TIOCGLCKTRMIOS  0x5456
-#define TIOCSLCKTRMIOS  0x5457
-#define TIOCSERGSTRUCT  0x5458
-#define TIOCSERGETLSR   0x5459
-#define TIOCSERGETMULTI 0x545A
-#define TIOCSERSETMULTI 0x545B
-
-#define TIOCMIWAIT  0x545C
-#define TIOCGICOUNT 0x545D
-#define FIOQSIZE    0x5460
-
-#define TIOCPKT_DATA         0
-#define TIOCPKT_FLUSHREAD    1
-#define TIOCPKT_FLUSHWRITE   2
-#define TIOCPKT_STOP         4
-#define TIOCPKT_START        8
-#define TIOCPKT_NOSTOP      16
-#define TIOCPKT_DOSTOP      32
-#define TIOCPKT_IOCTL       64
-
-#define TIOCSER_TEMT    0x01
-
-#define TIOCM_LE        0x001
-#define TIOCM_DTR       0x002
-#define TIOCM_RTS       0x004
-#define TIOCM_ST        0x008
-#define TIOCM_SR        0x010
-#define TIOCM_CTS       0x020
-#define TIOCM_CAR       0x040
-#define TIOCM_RNG       0x080
-#define TIOCM_DSR       0x100
-#define TIOCM_CD        TIOCM_CAR
-#define TIOCM_RI        TIOCM_RNG
-#define TIOCM_OUT1      0x2000
-#define TIOCM_OUT2      0x4000
-#define TIOCM_LOOP      0x8000
-
-#define N_TTY           0
-#define N_SLIP          1
-#define N_MOUSE         2
-#define N_PPP           3
-#define N_STRIP         4
-#define N_AX25          5
-#define N_X25           6
-#define N_6PACK         7
-#define N_MASC          8
-#define N_R3964         9
-#define N_PROFIBUS_FDL  10
-#define N_IRDA          11
-#define N_SMSBLOCK      12
-#define N_HDLC          13
-#define N_SYNC_PPP      14
-#define N_HCI           15
-
-#define FIOSETOWN       0x8901
-#define SIOCSPGRP       0x8902
-#define FIOGETOWN       0x8903
-#define SIOCGPGRP       0x8904
-#define SIOCGSTAMP      0x8906
-#define SIOCGSTAMPNS    0x8907
-
-#define SIOCADDRT       0x890B
-#define SIOCDELRT       0x890C
-#define SIOCRTMSG       0x890D
-
-#define SIOCGIFNAME     0x8910
-#define SIOCSIFLINK     0x8911
-#define SIOCGIFCONF     0x8912
-#define SIOCGIFFLAGS    0x8913
-#define SIOCSIFFLAGS    0x8914
-#define SIOCGIFADDR     0x8915
-#define SIOCSIFADDR     0x8916
-#define SIOCGIFDSTADDR  0x8917
-#define SIOCSIFDSTADDR  0x8918
-#define SIOCGIFBRDADDR  0x8919
-#define SIOCSIFBRDADDR  0x891a
-#define SIOCGIFNETMASK  0x891b
-#define SIOCSIFNETMASK  0x891c
-#define SIOCGIFMETRIC   0x891d
-#define SIOCSIFMETRIC   0x891e
-#define SIOCGIFMEM      0x891f
-#define SIOCSIFMEM      0x8920
-#define SIOCGIFMTU      0x8921
-#define SIOCSIFMTU      0x8922
-#define SIOCSIFNAME     0x8923
-#define SIOCSIFHWADDR   0x8924
-#define SIOCGIFENCAP    0x8925
-#define SIOCSIFENCAP    0x8926
-#define SIOCGIFHWADDR   0x8927
-#define SIOCGIFSLAVE    0x8929
-#define SIOCSIFSLAVE    0x8930
-#define SIOCADDMULTI    0x8931
-#define SIOCDELMULTI    0x8932
-#define SIOCGIFINDEX    0x8933
-#define SIOGIFINDEX     SIOCGIFINDEX
-#define SIOCSIFPFLAGS   0x8934
-#define SIOCGIFPFLAGS   0x8935
-#define SIOCDIFADDR     0x8936
-#define SIOCSIFHWBROADCAST 0x8937
-#define SIOCGIFCOUNT    0x8938
-
-#define SIOCGIFBR       0x8940
-#define SIOCSIFBR       0x8941
-
-#define SIOCGIFTXQLEN   0x8942
-#define SIOCSIFTXQLEN   0x8943
-
-#define SIOCDARP        0x8953
-#define SIOCGARP        0x8954
-#define SIOCSARP        0x8955
-
-#define SIOCDRARP       0x8960
-#define SIOCGRARP       0x8961
-#define SIOCSRARP       0x8962
-
-#define SIOCGIFMAP      0x8970
-#define SIOCSIFMAP      0x8971
-
-#define SIOCADDDLCI     0x8980
-#define SIOCDELDLCI     0x8981
-
-#define SIOCDEVPRIVATE      0x89F0
-#define SIOCPROTOPRIVATE    0x89E0
-
-int ioctl(int fildes, int cmd, ...);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/sys/select.h b/components/libc/compilers/common/sys/select.h
deleted file mode 100644
index 1232edd6e8..0000000000
--- a/components/libc/compilers/common/sys/select.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * 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
- * 2021-12-25     Meco Man     Handle newlib 2.2.0 or lower version
- */
-
-#ifndef __SYS_SELECT_H__
-#define __SYS_SELECT_H__
-
-#include <rtthread.h>
-#include <sys/types.h>
-#include <sys/time.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#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 */
-
-typedef long    fd_mask;
-
-#ifndef _SYS_TYPES_FD_SET /* Newlib 2.2.0 or lower version */
-#define   NBBY    8       /* number of bits in a byte */
-#define   NFDBITS (sizeof (fd_mask) * NBBY)   /* bits per mask */
-#ifndef   howmany
-#define   howmany(x,y)    (((x)+((y)-1))/(y))
-#endif /* howmany */
-
-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)      rt_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);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __SYS_SELECT_H__ */
diff --git a/components/libc/compilers/common/sys/signal.h b/components/libc/compilers/common/sys/signal.h
deleted file mode 100644
index 041dd765b7..0000000000
--- a/components/libc/compilers/common/sys/signal.h
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017-09-12     Bernard      The first version
- * 2021-07-21     Meco Man     move to libc/common
- */
-
-#ifndef __SYS_SIGNAL_H__
-#define __SYS_SIGNAL_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdint.h>
-#include <sys/types.h>
-
-
-/* sigev_notify values
-   NOTE: P1003.1c/D10, p. 34 adds SIGEV_THREAD.  */
-
-#define SIGEV_NONE   1  /* No asynchronous notification shall be delivered */
-                        /*   when the event of interest occurs. */
-#define SIGEV_SIGNAL 2  /* A queued signal, with an application defined */
-                        /*  value, shall be delivered when the event of */
-                        /*  interest occurs. */
-#define SIGEV_THREAD 3  /* A notification function shall be called to */
-                        /*   perform notification. */
-
-/*  Signal Generation and Delivery, P1003.1b-1993, p. 63
-    NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
-          sigev_notify_attributes to the sigevent structure.  */
-union sigval
-{
-    int    sival_int;    /* Integer signal value */
-    void  *sival_ptr;    /* Pointer signal value */
-};
-
-struct sigevent
-{
-    int          sigev_notify;               /* Notification type */
-    int          sigev_signo;                /* Signal number */
-    union sigval sigev_value;                /* Signal value */
-    void         (*sigev_notify_function)( union sigval );
-                                             /* Notification function */
-    void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
-};
-
-struct siginfo
-{
-    uint16_t si_signo;
-    uint16_t si_code;
-
-    union sigval si_value;
-};
-typedef struct siginfo siginfo_t;
-
-#define SI_USER     0x01    /* Signal sent by kill(). */
-#define SI_QUEUE    0x02    /* Signal sent by sigqueue(). */
-#define SI_TIMER    0x03    /* Signal generated by expiration of a timer set by timer_settime(). */
-#define SI_ASYNCIO  0x04    /* Signal generated by completion of an asynchronous I/O request. */
-#define SI_MESGQ    0x05    /* Signal generated by arrival of a message on an empty message queue. */
-
-typedef void (*_sig_func_ptr)(int);
-typedef unsigned long sigset_t;
-
-struct sigaction
-{
-    _sig_func_ptr sa_handler;
-    sigset_t sa_mask;
-    int sa_flags;
-};
-
-/*
- * Structure used in sigaltstack call.
- */
-typedef struct sigaltstack
-{
-  void     *ss_sp;    /* Stack base or pointer.  */
-  int       ss_flags; /* Flags.  */
-  size_t    ss_size;  /* Stack size.  */
-} stack_t;
-
-#define SIG_SETMASK 0   /* set mask with sigprocmask() */
-#define SIG_BLOCK   1   /* set of signals to block */
-#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */
-
-#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
-#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
-#define sigemptyset(what)   (*(what) = 0, 0)
-#define sigfillset(what)    (*(what) = ~(0), 0)
-#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)
-
-int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
-int sigpending (sigset_t *set);
-int sigsuspend (const sigset_t *set);
-
-#include "time.h"
-int sigtimedwait(const sigset_t *set, siginfo_t *info, const struct timespec *timeout);
-int sigwait(const sigset_t *set, int *sig);
-int sigwaitinfo(const sigset_t *set, siginfo_t *info);
-int raise(int sig);
-int sigqueue(pid_t pid, int signo, const union sigval value);
-int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
-
-#ifdef __ARMCC_VERSION
-#define SIGHUP       1
-/* #define SIGINT       2 */
-#define SIGQUIT      3
-/* #define SIGILL       4 */
-#define SIGTRAP      5
-/* #define SIGABRT      6 */
-#define SIGEMT       7
-/* #define SIGFPE       8 */
-#define SIGKILL      9
-#define SIGBUS      10
-/* #define SIGSEGV     11 */
-#define SIGSYS      12
-#define SIGPIPE     13
-#define SIGALRM     14
-/* #define SIGTERM     15 */
-#define SIGURG      16
-#define SIGSTOP     17
-#define SIGTSTP     18
-#define SIGCONT     19
-#define SIGCHLD     20
-#define SIGTTIN     21
-#define SIGTTOU     22
-#define SIGPOLL     23
-#define SIGWINCH    24
-#define SIGXCPU     24  /* exceeded CPU time limit */
-#define SIGXFSZ     25  /* exceeded file size limit */
-#define SIGVTALRM   26  /* virtual time alarm */
-/* #define SIGUSR1     25 */
-/* #define SIGUSR2     26 */
-#define SIGRTMIN    27
-#define SIGRTMAX    31
-#define NSIG        32
-
-#include <signal.h>
-
-#elif defined(__IAR_SYSTEMS_ICC__)
-#define SIGHUP       1
-#define SIGINT       2
-#define SIGQUIT      3
-#define SIGILL       4
-#define SIGTRAP      5
-/* #define SIGABRT      6 */
-#define SIGEMT       7
-#define SIGFPE       8
-#define SIGKILL      9
-#define SIGBUS      10
-#define SIGSEGV     11
-#define SIGSYS      12
-#define SIGPIPE     13
-#define SIGALRM     14
-#define SIGTERM     15
-#define SIGURG      16
-#define SIGSTOP     17
-#define SIGTSTP     18
-#define SIGCONT     19
-#define SIGCHLD     20
-#define SIGTTIN     21
-#define SIGTTOU     22
-#define SIGPOLL     23
-#define SIGWINCH    24
-#define SIGXCPU     24  /* exceeded CPU time limit */
-#define SIGXFSZ     25  /* exceeded file size limit */
-#define SIGVTALRM   26  /* virtual time alarm */
-#define SIGUSR1     25
-#define SIGUSR2     26
-#define SIGRTMIN    27
-#define SIGRTMAX    31
-#define NSIG        32
-
-#include <signal.h>
-
-#elif defined(__GNUC__)
-#define SIGHUP  1   /* hangup */
-#define SIGINT  2   /* interrupt */
-#define SIGQUIT 3   /* quit */
-#define SIGILL  4   /* illegal instruction (not reset when caught) */
-#define SIGTRAP 5   /* trace trap (not reset when caught) */
-#define SIGIOT  6   /* IOT instruction */
-#define SIGABRT 6   /* used by abort, replace SIGIOT in the future */
-#define SIGEMT  7   /* EMT instruction */
-#define SIGFPE  8   /* floating point exception */
-#define SIGKILL 9   /* kill (cannot be caught or ignored) */
-#define SIGBUS  10  /* bus error */
-#define SIGSEGV 11  /* segmentation violation */
-#define SIGSYS  12  /* bad argument to system call */
-#define SIGPIPE 13  /* write on a pipe with no one to read it */
-#define SIGALRM 14  /* alarm clock */
-#define SIGTERM 15  /* software termination signal from kill */
-#define SIGURG  16  /* urgent condition on IO channel */
-#define SIGSTOP 17  /* sendable stop signal not from tty */
-#define SIGTSTP 18  /* stop signal from tty */
-#define SIGCONT 19  /* continue a stopped process */
-#define SIGCHLD 20  /* to parent on child stop or exit */
-#define SIGCLD  20  /* System V name for SIGCHLD */
-#define SIGTTIN 21  /* to readers pgrp upon background tty read */
-#define SIGTTOU 22  /* like TTIN for output if (tp->t_local&LTOSTOP) */
-#define SIGIO   23  /* input/output possible signal */
-#define SIGPOLL SIGIO   /* System V name for SIGIO */
-#define SIGXCPU 24  /* exceeded CPU time limit */
-#define SIGXFSZ 25  /* exceeded file size limit */
-#define SIGVTALRM 26    /* virtual time alarm */
-#define SIGPROF 27  /* profiling time alarm */
-#define SIGWINCH 28 /* window changed */
-#define SIGLOST 29  /* resource lost (eg, record-lock lost) */
-#define SIGUSR1 30  /* user defined signal 1 */
-#define SIGUSR2 31  /* user defined signal 2 */
-#define NSIG    32      /* signal 0 implied */
-
-#ifndef _SIGNAL_H_
-/* Some applications take advantage of the fact that <sys/signal.h>
- * and <signal.h> are equivalent in glibc.  Allow for that here.  */
-#include <signal.h>
-#endif
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
diff --git a/components/libc/compilers/common/sys/statfs.h b/components/libc/compilers/common/sys/statfs.h
deleted file mode 100644
index 6f92bf1cf3..0000000000
--- a/components/libc/compilers/common/sys/statfs.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-
-#ifndef __SYS_STATFS_H__
-#define __SYS_STATFS_H__
-
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct statfs
-{
-    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);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
deleted file mode 100644
index 8a4dbb68f3..0000000000
--- a/components/libc/compilers/common/sys/time.h
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Copyright (c) 2006-2022, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 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__
-
-#include <rtconfig.h>
-#include <sys/types.h>
-#include <stdint.h>
-#include <time.h>
-#ifdef _WIN32
-typedef __time64_t time_t;
-#endif /* _WIN32 */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* timezone */
-#define DST_NONE    0   /* not on dst */
-#define DST_USA     1   /* USA style dst */
-#define DST_AUST    2   /* Australian style dst */
-#define DST_WET     3   /* Western European dst */
-#define DST_MET     4   /* Middle European dst */
-#define DST_EET     5   /* Eastern European dst */
-#define DST_CAN     6   /* Canada */
-#define DST_GB      7   /* Great Britain and Eire */
-#define DST_RUM     8   /* Rumania */
-#define DST_TUR     9   /* Turkey */
-#define DST_AUSTALT 10  /* Australian style with shift in 1986 */
-
-struct timezone
-{
-    int tz_minuteswest;   /* minutes west of Greenwich */
-    int tz_dsttime;       /* type of dst correction */
-};
-
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
-struct timeval
-{
-    time_t      tv_sec;     /* seconds */
-    suseconds_t tv_usec;    /* and microseconds */
-};
-#endif /* _TIMEVAL_DEFINED */
-
-#if defined(__ARMCC_VERSION) || defined(_WIN32) || (defined(__ICCARM__) && (__VER__ < 8010001))
-struct timespec
-{
-    time_t  tv_sec;     /* seconds */
-    long    tv_nsec;    /* and nanoseconds */
-};
-#endif /* defined(__ARMCC_VERSION) || defined(_WIN32) || (defined(__ICCARM__) && (__VER__ < 8010001)) */
-
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/)
-/*
- * Structure defined by POSIX.1b to be like a itimerval, but with
- * timespecs. Used in the timer_*() system calls.
- */
-struct itimerspec
-{
-    struct timespec  it_interval;
-    struct timespec  it_value;
-};
-#endif /* !(defined(__GNUC__) && !defined(__ARMCC_VERSION)) */
-
-int stime(const time_t *t);
-time_t timegm(struct tm * const t);
-int gettimeofday(struct timeval *tv, struct timezone *tz);
-int settimeofday(const struct timeval *tv, const struct timezone *tz);
-#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
-struct tm *gmtime_r(const time_t *timep, struct tm *r);
-struct tm* localtime_r(const time_t* t, struct tm* r);
-char* asctime_r(const struct tm *t, char *buf);
-char *ctime_r(const time_t * tim_p, char * result);
-#elif defined(_WIN32)
-struct tm* gmtime_r(const time_t* timep, struct tm* r);
-struct tm* gmtime(const time_t* t);
-struct tm* localtime_r(const time_t* t, struct tm* r);
-struct tm* localtime(const time_t* t);
-time_t mktime(struct tm* const t);
-char* asctime_r(const struct tm* t, char* buf);
-char* ctime_r(const time_t* tim_p, char* result);
-char* ctime(const time_t* tim_p);
-time_t time(time_t* t);
-#endif
-
-#ifdef RT_USING_POSIX_DELAY
-int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
-#endif /* RT_USING_POSIX_DELAY */
-
-#if defined(RT_USING_POSIX_CLOCK) || defined (RT_USING_POSIX_TIMER)
-/* POSIX clock and timer */
-#define MILLISECOND_PER_SECOND  1000UL
-#define MICROSECOND_PER_SECOND  1000000UL
-#define NANOSECOND_PER_SECOND   1000000000UL
-
-#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
-
-#ifndef CLOCK_REALTIME
-#define CLOCK_REALTIME      1
-#endif
-
-#define CLOCK_CPUTIME_ID    2
-
-#ifndef CLOCK_PROCESS_CPUTIME_ID
-#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
-#endif
-#ifndef CLOCK_THREAD_CPUTIME_ID
-#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
-#endif
-
-#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC     4
-#endif
-#endif /* defined(RT_USING_POSIX_CLOCK) || defined (RT_USING_POSIX_TIMER) */
-
-#ifdef RT_USING_POSIX_CLOCK
-int clock_getres  (clockid_t clockid, struct timespec *res);
-int clock_gettime (clockid_t clockid, struct timespec *tp);
-int clock_settime (clockid_t clockid, const struct timespec *tp);
-int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp, struct timespec *rmtp);
-int rt_timespec_to_tick(const struct timespec *time);
-#endif /* RT_USING_POSIX_CLOCK */
-
-#ifdef RT_USING_POSIX_TIMER
-#include "signal.h"
-int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid);
-int timer_delete(timer_t timerid);
-int timer_getoverrun(timer_t timerid);
-int timer_gettime(timer_t timerid, struct itimerspec *its);
-int timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
-                  struct itimerspec *ovalue);
-#endif /* RT_USING_POSIX_TIMER */
-
-/* timezone */
-void tz_set(int8_t tz);
-int8_t tz_get(void);
-int8_t tz_is_dst(void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common/sys/unistd.h b/components/libc/compilers/common/sys/unistd.h
deleted file mode 100644
index fcf6e342e7..0000000000
--- a/components/libc/compilers/common/sys/unistd.h
+++ /dev/null
@@ -1,57 +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
- * 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 <sys/types.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-unsigned alarm(unsigned __secs);
-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 pause(void);
-int fsync(int fildes);
-long sysconf(int __name);
-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);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/sys/vfs.h b/components/libc/compilers/common/sys/vfs.h
deleted file mode 100644
index a9330df002..0000000000
--- a/components/libc/compilers/common/sys/vfs.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * 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 __SYS_VFS_H__
-#define __SYS_VFS_H__
-
-#include "statfs.h" /* <sys/statfs.h> */
-
-#endif