/***********************************************************
* Copyright (C), 2021, LuxShare co.,
*
* File name : lux_system_api
*
* Description :
* 	system or C API
*
* History:
*
* <Date> 		<Author> 	<version> 	<Modification>
* 2021/03/23		chin 			0.01 		First draft
***********************************************************/
#include "lux_system_api.h"
#include <stdarg.h>
#include <dlfcn.h>
#include <time.h>
#include <sys/mman.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <sys/reboot.h>
#include <netdb.h>


/***********************************************************
* Name:
*	LuxMsync
*
* Summary:
*	flushes  changes  made to the in-core copy of a file that was mapped into memory using mmap(2) back to the filesystem.
*
* Return Value:
*   On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.
*
* Parameter Input:
* void *addr    
* size_t length 
* int flags      
*
* Parameter Output:
*	None
*
* Author:
*	Tivon.Xia@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxMsync(void *addr, size_t length, int flags)
{
    return msync(addr, length,flags);
}

/***********************************************************
* Name:
*	LuxMmap
*
* Summary:
*	creates a new mapping in the virtual address space of the calling process.
*
* Return Value:
*	On success, mmap() returns a pointer to the mapped area.  
*   On error, the value MAP_FAILED (that is, (void *) -1) is returned, and errno is set to indicate the cause of the error.
*
* Parameter Input:
* void *addr    ----starting address for the new mapping
* size_t length ----the length of the mapping (>0)
* int prot      ----desired memory protection of the mapping (and must not conflict with the open mode of the file)
* int flags     ----determines whether updates to the mapping are visible to other processes mapping the same region, and whether 
*                   updates are carried through to the underlying file.
* int fd        ----
* off_t offset  ----offset must be a multiple of the page size as returned by sysconf(_SC_PAGE_SIZE).
*
* Parameter Output:
*	None
*
* Author:
*	Tivon.Xia@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxMmap(void *addr, size_t length, int prot, int flags,int fd, off_t offset)
{
    return mmap(addr,length,prot,flags,fd,offset);
}
/***********************************************************
* Name:
*	LuxMunmap
*
* Summary:
*	deletes the mappings for the specified address range, and causes further references to addresses within the range to generate invalid memory references.
*
* Return Value:
*	On success, munmap() returns 0.  On failure, it returns -1, and errno is set to indicate the cause of the error (probably to EINVAL).
*
* Parameter Input:
*	void *addr      
*	size_t length   
*
* Parameter Output:
*	None
*
* Author:
*	Tivon.Xia@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxMunmap(void *addr, size_t length)
{
    return munmap(addr,length);
}

/***********************************************************
* Name:
*	LuxMemset
*
* Summary:
*	fill memory with a constant byte
*
* Return Value:
*	The memset() function returns a pointer to the memory area pStr.
*
* Parameter Input:
*	void* pDestStr -- buffer to initial
*	size_t szSize -- buffer size
*	int iValue -- initial value
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxMemset(void* pStr, int iValue, size_t szCount)
{
    if(NULL == pStr)
    {
        return NULL;
    }
    else
    {
        return memset(pStr,iValue,szCount);
    }
}



/***********************************************************
* Name:
*	LuxMemset_s
*
* Summary:
*	LuxMemset_s(safe memset)
*
* Return Value:
*	EFuncRetCode(FUNC_FAILED or FUNC_OK)
*
* Parameter Input:
*	void* pDestStr -- buffer to initial
*	size_t szSize -- buffer size
*	int iValue -- initial value
*	size_t szCount -- the size which you want to initial
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
EFuncRetCode LuxMemsetSafe(void* pDestStr, size_t szSize, int iValue, size_t szCount)
{
    if((NULL == pDestStr)||(szCount>szSize))
    {
        return FUNC_FAILED;
    }

    void* pNewStr = pDestStr;
    while (szSize --)
    {
        *(char*) pNewStr = (char) iValue;
        pNewStr = (char*) pNewStr + 1;
    }
    return FUNC_OK;
}


/***********************************************************
* Name:
*	LuxMemcpy
*
* Summary:
*	copy memory area
*
* Return Value:
*	The memcpy() function returns a pointer to pDst
*
* Parameter Input:
*	void* pDst -- dest buffer
*	const void *pSrc -- source buffer
*	szCount -- size need to copy
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

void* LuxMemcpy(void* pDst, const void* pSrc, size_t szCount)
{
    if(NULL == pDst || NULL == pSrc)
    {
        return NULL;
    }
    else
    {
        return memcpy(pDst,pSrc,szCount);
    }
}
/***********************************************************
* Name:
*	LuxMemcpy_s
*
* Summary:
*	LuxMemcpy_s(safe memcpy)
*
* Return Value:
*	EFuncRetCode(FUNC_FAILED or FUNC_OK)
*
* Parameter Input:
*	void* pDst -- dest buffer
*	size_t szSize -- dest buffer size
*	const void* pSrc -- source buffer
*	size_t szCount -- the size which you want to copy
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

EFuncRetCode LuxMemcpySafe(void* pDst, size_t szSize, const void* pSrc, size_t szCount)
{
    char* psrc;
    char* pdst;

    if((NULL == pDst || NULL == pSrc)||(szCount > szSize))
    {
        return FUNC_FAILED;
    }

    if((pSrc < pDst) && (char*)pSrc + szCount > (char*)pDst) /* from back to front*/
    {
        psrc = (char*)pSrc + szCount - 1;
        pdst = (char*)pDst + szCount - 1;
        while(szCount--)
        {
            *pdst-- = *psrc--;
        }
    }
    else
    {
        psrc = (char*)pSrc;
        pdst = (char*)pDst;
        while(szCount--)
        {
            *pdst++ = *psrc++;
        }
    }

    return FUNC_OK;
}


/***********************************************************
* Name:
*	LuxMemcmp
*
* Summary:
*	compare memory areas
*
* Return Value:
*	The memcmp() function returns an integer less than, equal to, or greater than zero if the first n bytes of pBuf1 is found,
*	respectively, to be less than, to match, or be greater than the first szCount bytes of pBuf2.
*
* Parameter Input:
*	void* pStr1 -- buf1 need to compare
*	void* pStr2 -- buf2 need to compare
*	size_t szCount -- the size which you want to compare
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxMemcmp(const void* pBuf1,const void* pBuf2,size_t szCount)
{
    if((NULL == pBuf1)||(NULL == pBuf2))
        return -1;
    else
        return memcmp(pBuf1,pBuf2,szCount);
}

/***********************************************************
* Name:
*	LuxMemchr
*
* Summary:
*	Scans  the initial n bytes of the memory area pointed to by s for the first instance of iCharacter
*
* Return Value:
*	The memchr() functions return a pointer to the matching byte or NULL if the character does not occur in the given memory area
*
* Parameter Input:
*	void* pStr
*	int iCharacter
*	size_t szCount
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxMemchr(const void* pStr, int iCharacter, size_t szCount)
{
    if(NULL == pStr)
        return NULL;
    else
        return memchr(pStr, iCharacter, szCount);
}
/***********************************************************
* Name:
*	LuxStrchr
*
* Summary:
*	returns a pointer to the first occurrence of the character iCharacter in the string pStr
*
* Return Value:
*	The strchr() functions return a pointer to the matched character or NULL if the character is not found.
*
* Parameter Input:
*	void* pcStr
*	int iCharacter
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrchr(const char* pcStr, int iCharacter)
{
    if(NULL == pcStr)
        return NULL;
    else
        return strchr(pcStr, iCharacter);

}
/***********************************************************
* Name:
*	LuxStrtok
*
* Summary:
*	The  strtok() function breaks a string into a sequence of zero or more nonempty tokens.
*
* Return Value:
*	The strtok() functions return a pointer to the next token, or NULL if there are no more tokens.
*
* Parameter Input:
*	void* pcStr
*	int iCharacter
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

char* LuxStrtok(char* pcStr, const char* pcDelim)
{

    return strtok(pcStr, pcDelim);

}

/***********************************************************
* Name:
*	LuxStrcpy
*
* Summary:
*	copy a string
*
* Return Value:
*	The strcpy() functions return a pointer to the destination string pcDestStr
*
* Parameter Input:
*	void* pcDestStr
*	void* pcScrStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrcpy(char* pcDestStr, const char* pcScrStr)
{
    if((NULL == pcDestStr)||(NULL == pcScrStr))
        return NULL;
    else
        return strcpy(pcDestStr,pcScrStr);
}

/***********************************************************
* Name:
*	LuxStrncpy
*
* Summary:
*	copy a string-except that at most szCount bytes of src are copied
*
* Return Value:
*	The strcpy() functions return a pointer to the destination string pcDestStr
*
* Parameter Input:
*	void* pcDestStr
*	void* pcScrStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrncpy(char* pcDestStr, const char* pcScrStr, size_t szCount)
{
    if((NULL == pcDestStr)||(NULL == pcScrStr))
        return NULL;

    if(szCount<=0)
        return NULL;

    return strncpy(pcDestStr,pcScrStr,szCount);
}

/***********************************************************
* Name:
*	LuxStrcmp
*
* Summary:
*	compare two strings
*
* Return Value:
*	The  strcmp()  function  compares  the  two  strings pcStr1 and pcStr2.  It returns an integer less than, equal to, or greater than zero if pcStr1 is found,
*	respectively, to be less than, to match, or be greater than pcStr2.
*
* Parameter Input:
*	char* pcStr1
*	char* pcStr2
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxStrcmp(const char* pcStr1, const char* pcStr2)
{
        if((NULL == pcStr1)||(NULL == pcStr2))
            return -1;
        else
            return strcmp(pcStr1,pcStr2);
}

/***********************************************************
* Name:
*	LuxStrncmp
*
* Summary:
*	compare two strings
*
* Return Value:
*	The strncmp() function is similar to strcmp(), except it compares only the first (at most) szCount bytes of pcStr1 and pcStr2
*
* Parameter Input:
*	const char* pcStr1
*	const char* pcStr2
*	size_t szCount--the count need to compare
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxStrncmp(const char* pcStr1, const char* pcStr2, size_t szCount)
{
    if((NULL == pcStr1)||(NULL == pcStr2))
        return -1;

    if(szCount<=0)
        return -1;

    return strncmp(pcStr1,pcStr2,szCount);
}


/***********************************************************
* Name:
*	LuxStrlen
*
* Summary:
*	calculate the length of a string
*
* Return Value:
*	The strlen() function returns the number of characters in the string pointed to by pcStr.
*
* Parameter Input:
*	char* pcStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
size_t LuxStrlen(const char* pcStr)
{
    if(NULL == pcStr)
        return 0;

    return strlen(pcStr);
}

/***********************************************************
* Name:
*	LuxStrnlen
*
* Summary:
*	determine the length of a fixed-size string
*
* Return Value:
*	The strnlen() function returns strlen(pcStr), if that is less than szLen, or szLen if there is no null terminating ('\0') among the first szLen characters pointed to by pcStr
*
* Parameter Input:
*	char* pcStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
size_t LuxStrnlen(const char* pcStr, size_t szLen)
{
    if(NULL == pcStr)
        return 0;

    return strnlen(pcStr,szLen);
}

/***********************************************************
* Name:
*	LuxStrcat
*
* Summary:
*	concatenate two strings
*
* Return Value:
*	The strcat() functions return a pointer to the resulting string pcDestStr.
*
* Parameter Input:
*	char *pcDestStr
*	const char *pcSrcStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrcat(char* pcDestStr, const char* pcSrcStr)
{
    if((NULL == pcDestStr)||(NULL == pcSrcStr))
        return NULL;

    return strcat(pcDestStr,pcSrcStr);
}

/***********************************************************
* Name:
*	LuxStrncat
*
* Summary:
*	concatenate two strings
*
* Return Value:
*	The strcat() functions return a pointer to the resulting string pcDest.
*
* Parameter Input:
*	char* pcDest, const char* pcSrc, size_t szCount
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrncat(char* pcDest, const char* pcSrc, size_t szCount)
{
    if((NULL == pcDest)||(NULL == pcSrc))
    {
        return NULL;
    }
    return strncat(pcDest,pcSrc,szCount);
}

/***********************************************************
* Name:
*	LuxStrstr
*
* Summary:
*	locate a substring
*
* Return Value:
*	These functions return a pointer to the beginning of the located substring, or NULL if the substring is not found
*
* Parameter Input:
*	char* pcDestStr, const char* pcSrcStr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxStrstr(char* pcDestStr, const char* pcSrcStr)
{
    if((NULL == pcDestStr)||(NULL == pcSrcStr))
    {
        return NULL;
    }
    return strstr(pcDestStr,pcSrcStr);
}

/***********************************************************
* Name:
*	LuxPrintf
*
* Summary:
*	formatted output conversion
*
* Return Value:
*	Upon successful return, these functions return the number of characters printed
*	If an output error is encountered, a negative value is returned
*
* Parameter Input:
*	const char* pcfmt,...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxPrintf(const char* pcfmt,...)
{
    int iRet = 0;
    va_list args;
    va_start(args,pcfmt);
    iRet = vprintf(pcfmt, args);
    va_end(args);
    return iRet;
}
/***********************************************************
* Name:
*	LuxFprintf
*
* Summary:
*	formatted output to a file pointor
*
* Return Value:
*	Upon successful return, these functions return the number of characters printed
*	If an output error is encountered, a negative value is returned
*
* Parameter Input:
*	FILE* fp, char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxFprintf(FILE* fp, char* pcfmt, ...)
{
    if(NULL == fp)
    {
        return -1;
    }
    else
    {
        int iRet = 0;
         va_list args;
         va_start(args,pcfmt);
         iRet = vfprintf(fp, pcfmt, args);
         va_end(args);
         return iRet;
    }
}
/***********************************************************
* Name:
*	LuxDprintf
*
* Summary:
*	formatted output to a file descriptor
*
* Return Value:
*	Upon successful return, these functions return the number of characters printed
*	If an output error is encountered, a negative value is returned
*
* Parameter Input:
*	int fd, const char *pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxDprintf(int fd, const char *pcfmt, ...)
{
    if(fd < 0)
    {
        return -1;
    }
    else
    {
        int iRet = 0;
        va_list args;
        va_start(args,pcfmt);
        iRet = vdprintf(fd, pcfmt, args);
        va_end(args);
        return iRet;
    }
}
/***********************************************************
* Name:
*	LuxSprintf
*
* Summary:
*	formatted output to a buffer
*
* Return Value:
*	Upon successful return, these functions return the number of characters printed
*	If an output error is encountered, a negative value is returned
*
* Parameter Input:
*	char* pcBuf, const char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxSprintf(char* pcBuf, const char* pcfmt, ...)
{
    va_list args;
    int iRet;
    va_start(args, pcfmt);
    iRet = vsprintf(pcBuf, pcfmt, args);
    va_end(args);
    return iRet;
}
/***********************************************************
* Name:
*	LuxSprintf
*
* Summary:
*	formatted output to a buffer at most szSize bytes (including the terminating null byte ('\0'))
*
* Return Value:
*	Upon successful return, these functions return the number of characters printed
*	If an output error is encountered, a negative value is returned
*
* Parameter Input:
*	char* pcBuf, size_t szSize, const char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxSnprintf(char* pcBuf, size_t szSize, const char* pcfmt, ...)
{
    va_list args;
    int iRet;
    va_start(args, pcfmt);
    iRet = vsnprintf(pcBuf, szSize, pcfmt, args);
    va_end(args);
    return iRet;
}

/***********************************************************
* Name:
*	LuxSscanf
*
* Summary:
*	reads its input from the character string  pointed  to by pcBuf
*
* Return Value:
*	On success, return the number of input items successfully matched and assigned
*	The value EOF is returned if the end of input is reached before either the first successful conversion or a matching failure occurs
*
* Parameter Input:
*	const char* pcBuf, const char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxSscanf(const char* pcBuf, const char* pcfmt, ...)
{
     va_list ap;
     int iRet;

     va_start(ap, pcfmt);
     iRet = vsscanf(pcBuf, pcfmt, ap);
     va_end(ap);
     return iRet;
}
/***********************************************************
* Name:
*	LuxScanf
*
* Summary:
*	reads input from the standard input stream stdin
*
* Return Value:
*	On success, return the number of input items successfully matched and assigned
*	The value EOF is returned if the end of input is reached before either the first successful conversion or a matching failure occurs
*
* Parameter Input:
*	const char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxScanf(const char* pcfmt, ...)
{
     va_list ap;
     int iRet;

     va_start(ap, pcfmt);
     iRet = vscanf(pcfmt, ap);
     va_end(ap);
     return iRet;
}
/***********************************************************
* Name:
*	LuxFscanf
*
* Summary:
*	reads input from the stream pointer stream
*
* Return Value:
*	On success, return the number of input items successfully matched and assigned
*	The value EOF is returned if the end of input is reached before either the first successful conversion or a matching failure occurs
*
* Parameter Input:
*	FILE* pstream, const char* pcfmt, ...
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxFscanf(FILE* pstream, const char* pcfmt, ...)
{
    if(NULL == pstream)
    {
        return -1;
    }
    else
    {
        va_list ap;
        int iRet;

        va_start(ap, pcfmt);
        iRet = vfscanf(pstream, pcfmt, ap);
        va_end(ap);
        return iRet;
    }
}

/***********************************************************
* Name:
*	LuxOpenAndCreat
*
* Summary:
*	creat or open a file or a device
*
* Return Value:
*	Upon successful return a FILE descriptor.
*	Otherwise, NULL is returned and errno is set to indicate the error.
*
* Parameter Input:
*	char* pcPathname -- file name to open
*	char* iFlags -- file flags to open, support below flags:
*		O_RDONLY	    Open file for reading.
*		O_WRONLY	    Open file for writing.
*		O_RDWR	   		Open file for reading and writing.
*	if need to create a file,below flags also need to use:
*		O_APPEND	    Append a file.
*		O_CREAT	   		Create a new file if file not exist.  .
*	mode_t mode -- file mode to open, support below mode:
*		S_IRUSR/S_IWUSR/S_IXUSR
*		S_IRGRP/S_IWGRP/S_IXGRP
*		S_IROTH/S_IWOTH/S_IXOTH
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxOpenAndCreat(const char* pcPathname,int iFlags,mode_t mode)
{
    return open(pcPathname,iFlags,mode);
}

/***********************************************************
* Name:
*	LuxOpen
*
* Summary:
*	open a file or a device
*
* Return Value:
*	Upon successful return a FILE descriptor.
*	Otherwise, NULL is returned and errno is set to indicate the error.
*
* Parameter Input:
*	char* pcPathname -- file name to open
*	char* iFlags -- file flags to open, support below flags:
*		O_RDONLY	    Open file for reading.
*		O_WRONLY	    Open file for writing.
*		O_RDWR	   		Open file for reading and writing.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxOpen(const char* pcPathname,int iFlags)
{
    return open(pcPathname,iFlags);
}
/***********************************************************
* Name:
*	LuxClose
*
* Summary:
*	close a file or a device
*
* Return Value:
*	returns zero on success.
*	On error, -1 is returned, and errno is set appropriately.
*
* Parameter Input:
*	int fd -- a  file  descriptor
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxClose(int fd)
{
    if(fd < 0)
    {
        return -1;
    }
    return close(fd);
}
/***********************************************************
* Name:
*	LuxRead
*
* Summary:
*	read from a file descriptor
*
* Return Value:
*	On  success, the number of bytes read is returned (zero indicates end of file).
*	On error, -1 is returned, and errno is set appropriately.
*
* Parameter Input:
*	int fd -- a  file  descriptor
*	void* pBuf -- read the file into the buf
*	size_t szCount -- the count need to read from the file
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
ssize_t LuxRead(int fd, void* pBuf, size_t szCount)
{
    if(fd < 0)
    {
        return -1;
    }
    return read(fd, pBuf, szCount);
}
/***********************************************************
* Name:
*	LuxWrite
*
* Summary:
*	write buf to a file descriptor
*
* Return Value:
*	On  success, the number of bytes write is returned (zero indicates end of file).
*	On error, -1 is returned, and errno is set appropriately.
*
* Parameter Input:
*	int fd -- a  file  descriptor
*	void* pBuf -- write the buf into the file
*	size_t szCount -- the count need to write to the file
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
ssize_t LuxWrite(int fd, void* pBuf, size_t szCount)
{
    if(fd < 0)
    {
        return -1;
    }
    return write(fd, pBuf, szCount);
}
/***********************************************************
* Name:
*	LuxLseek
*
* Summary:
*	reposition read/write file offset
*
* Return Value:
*	Upon  successful completion, returns the resulting offset location as measured in bytes from the beginning of the file..
*	On error, the value (off_t) -1 is returned and errno is set to indicate the error.
*
* Parameter Input:
*	int fd -- a  file  descriptor
*   off_t offset -- offset to move
*	iWhence -- position to move, support below settings:
*	    SEEK_SET -- The file offset is set to offset bytes.
*       SEEK_CUR -- The file offset is set to its current location plus offset bytes.
*       SEEK_END -- The file offset is set to the size of the file plus offset bytes.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

off_t LuxLseek(int fd, off_t offset, int iWhence)
{
    if(fd < 0)
    {
        return -1;
    }
    return lseek(fd, offset, iWhence);
}
/***********************************************************
* Name:
*	LuxFopen
*
* Summary:
*	stream open functions
*
* Return Value:
*	Upon successful return a FILE pointer.
*	Otherwise, NULL is returned and errno is set to indicate the error.
*
* Parameter Input:
*	char* pcPathname -- file name to open
*	char* pcMode -- file mode to open, support below mode
*		r	   Open text file for reading.
*		r+	   Open for reading and writing.
*		w	   Truncate file to zero length or create text file for writing.
*		w+	   Open for reading and writing.
*		a	   Open for appending (writing at end of file).
*		a+	   Open  for  reading and appending (writing at end of file).
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
FILE* LuxFopen(const char* pcPathname, const char* pcMode)
{
    return fopen(pcPathname,pcMode);
}
/***********************************************************
* Name:
*	LuxFclose
*
* Summary:
*	close a stream
*
* Return Value:
*	Upon  successful completion, 0 is returned.
*	Otherwise, EOF is returned and errno is set to indicate the error.
*
* Parameter Input:
*	FILE* pstream -- pstream to close
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxFclose(FILE* pstream)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return fclose(pstream);
}
/***********************************************************
* Name:
*	LuxFread
*
* Summary:
*	LuxFread -- read a stream and store to buffer
*
* Return Value:
*	On  success,  return the number of items read.  This number equals the number of bytes transferred only when size is 1.
*	If an error occurs, or the end of the file is reached, the return value is a short item count (or zero).
*
* Parameter Input:
*	const void* ptr -- storing data at the location given by ptr
*	size_t szSize -- each size bytes long
*	size_t szNmemb -- reads nmemb items of data
*	FILE* pstream  -- file pstream to read
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

size_t LuxFread(void* ptr, size_t szSize, size_t szNmemb, FILE* pstream)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return fread(ptr, szSize, szNmemb, pstream);

}
/***********************************************************
* Name:
*	LuxFwrite
*
* Summary:
*	LuxFwrite -- write buffer data to a stream
*
* Return Value:
*	On  success,  return the number of items written.  This number equals the number of bytes transferred only when size is 1.
*	If an error occurs, or the end of the file is reached, the return value is a short item count (or zero).
*
* Parameter Input:
*	const void* ptr -- obtaining data from the location given by ptr
*	size_t szSize -- each size bytes long
*	size_t szNmemb -- writes nmemb items of data
*	FILE* pstream  -- file stream to write
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
size_t LuxFwrite(const void* ptr, size_t szSize, size_t szNmemb, FILE* pstream)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return  fwrite(ptr, szSize, szNmemb, pstream);

}
/***********************************************************
* Name:
*	LuxFseek
*
* Summary:
*	reposition a stream
*
* Return Value:
*	Upon successful completion, return 0.
*	Otherwise, -1 is returned  and	errno  is set to indicate the error.
*
* Parameter Input:
*	FILE* pstream -- pstream
*   long offset -- offset to move
*	iWhence -- position to move, support below settings:
*	    SEEK_SET -- The file offset is set to offset bytes.
*       SEEK_CUR -- The file offset is set to its current location plus offset bytes.
*       SEEK_END -- The file offset is set to the size of the file plus offset bytes.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxFseek(FILE *pstream, long offset, int iWhence)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return fseek(pstream,offset,iWhence);
}

/***********************************************************
* Name:
*	LuxFtell
*
* Summary:
*	LuxFtell -- obtains the current value  of  the  file  position indicator for the stream pointed to by stream.
*
* Return Value:
*	Upon successful completion,ftell() returns the current offset.
*	Otherwise,  -1  is  returned and errno is set to indicate the error.
*
* Parameter Input:
*	FILE* pstream  -- file pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
long LuxFtell(FILE* pstream)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return  ftell(pstream);

}

/***********************************************************
* Name:
*	LuxFeof
*
* Summary:
*	LuxFeof -- The  function feof() tests the end-of-file indicator for the stream pointed to by stream, returning nonzero if it is set.
*
* Return Value:
*	return nonzero if it is not end of file.
*	return zero if it end of file.
*
* Parameter Input:
*	FILE* stream  -- file pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxFeof(FILE* pstream)
{
    return feof(pstream);
}


/***********************************************************
* Name:
*	LuxFflush
*
* Summary:
*	LuxFflush -- forces a write of all user-space buffered data for the given output or update stream via the stream's underlying write function.
*
* Return Value:
*	Upon successful completion 0 is returned.
*	Otherwise, EOF is returned and errno is set to indicate the error.   .
*
* Parameter Input:
*	FILE* pstream  -- file pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxFflush(FILE* pstream)
{
    return fflush(pstream);
}


/***********************************************************
* Name:
*	LuxRewind
*
* Summary:
*	LuxRewind -- sets the file position indicator for the stream pointed to by stream to the beginning of the file.
*
* Return Value:
*	None
*
* Parameter Input:
*	FILE* pstream  -- file pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void LuxRewind(FILE* pstream)
{
    rewind(pstream);
}
/***********************************************************
* Name:
*	LuxRemove
*
* Summary:
*	LuxRemove -- deletes a name from the filesystem.
*
* Return Value:
*	On success, zero is returned.
*	On error, -1 is returned, and errno is set appropriately
*
* Parameter Input:
*	char* pcFilename  -- file name
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxRemove(const char* pcFilename)
{
    if(NULL == pcFilename)
    {
        return -1;
    }
    return remove(pcFilename);
}
/***********************************************************
* Name:
*	LuxRename
*
* Summary:
*	LuxRename -- rename the specified files by replacing the first occurrence of expression in their name by replacement.
*
* Return Value:
*	On success, zero is returned.
*	On error, -1 is returned, and errno is set appropriately
*
* Parameter Input:
*	const char* pcOldFilename, const char* pcNewFilename
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxRename(const char* pcOldFilename, const char* pcNewFilename)
{
    return rename(pcOldFilename, pcNewFilename);
}

/***********************************************************
* Name:
*	LuxSystem
*
* Summary:
*	LuxSystem
*
* Return Value:
*	on  success, returns FUNC_OK;
*	on fail, returns FUNC_FAILED.
*
* Parameter Input:
*	char* pcCmdStr -- cmd string need to be executed
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
EFuncRetCode LuxSystem(char* pcCmdStr)
{
    int iStatus = system(pcCmdStr);

    if (-1 == iStatus)
    {
        printf("system error!");
        return FUNC_FAILED;
    }
    else
    {
        /*printf("exit status value = [0x%x]\n", iStatus);*/

        if (WIFEXITED(iStatus))
        {
            if (0 == WEXITSTATUS(iStatus))
            {
                /*printf("run shell script successfully.\n");*/
                return FUNC_OK;
            }
            else
            {
                printf("run shell script fail, script exit code: %d\n", WEXITSTATUS(iStatus));
                return FUNC_FAILED;
            }
        }
        else
        {
            printf("exit status = [%d]\n", WEXITSTATUS(iStatus));
            return FUNC_FAILED;
        }
    }
}
/***********************************************************
* Name:
*	LuxPopen
*
* Summary:
*	pipe stream to or from a process
*
* Return Value:
*	on  success, returns a pointer to an open stream that can be used to read or write to the pipe;
*	if the fork(2) or pipe(2) calls fail, or if the function cannot allocate memory, NULL is returned.
*
* Parameter Input:
*	char* pcCmdStr -- cmd string need to be executed
*	char* pcType -- "w" or "r"
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
FILE* LuxPopen(const char* pcCmdStr, const char* pcType)
{
    if(NULL == pcCmdStr)
    {
        return NULL;
    }
    return popen(pcCmdStr, pcType);

}
/***********************************************************
* Name:
*	LuxPclose
*
* Summary:
*	LuxPclose
*
* Return Value:
*	on success, returns the exit status of the command;
*	if wait4(2) returns an error, or some other error is detected, -1 is returned
*
* Parameter Input:
*	FILE* pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxPclose(FILE* pstream)
{
    if(NULL == pstream)
    {
        return -1;
    }
    return pclose(pstream);

}

/***********************************************************
* Name:
*	LuxDlopen
*
* Summary:
*	open a shared object
*
* Return Value:
*	On success,  dlopen() return a non-NULL handle for the loaded library.
*	On error (file could not be found, was not readable, had the wrong format, or caused errors during load‐ing), these functions return NULL.
*
* Parameter Input:
*	char* pcFilename -- file name to open
*	int iFlags -- One of the following two values must be included in flags:
*		RTLD_LAZY -- Perform	lazy  binding.	 Resolve  symbols only as the code that references them is executed.
*		RTLD_NOW -- If  this  value	is specified, or the environment variable LD_BIND_NOW is set to a nonempty string, all undefined symbols in the shared object are resolved before dlopen() returns.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxDlopen(const char* pcFilename, int iFlags)
{
    void* pDlhandle = NULL;
    pDlhandle = dlopen(pcFilename, iFlags);
    if(NULL == pDlhandle)
    {
        return NULL;
    }
    return pDlhandle;
}

/***********************************************************
* Name:
*	LuxDlclose
*
* Summary:
*	close a shared object
*
* Return Value:
*	On success, dlclose() returns 0;
*	on error, it returns a nonzero value.
*
* Parameter Input:
*	void* pDlhandle
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxDlclose(void* pDlhandle)
{
    if(NULL == pDlhandle)
    {
        return -1;
    }
    return dlclose(pDlhandle);
}
/***********************************************************
* Name:
*	LuxDlsym
*
* Summary:
*	obtain address of a symbol in a shared object or executable
*
* Return Value:
*	On success, these functions return the address associated with pcSymbol;
*	On failure, return NULL.
*
* Parameter Input:
*	FILE* pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxDlsym(void* pDlhandle, const char* pcSymbol)
{

    if(NULL == pDlhandle)
    {
        return NULL;
    }
    return dlsym(pDlhandle, pcSymbol);
}

/***********************************************************
* Name:
*	LuxDlerror
*
* Summary:
*	obtain error diagnostic for functions in the dlopen API
*
* Return Value:
*	The  dlerror()  function  returns  a human-readable, null-terminated string describing the most recent error that occurred
*	from a call to one of the functions in the dlopen API since the last call to dlerror().
*	dlerror() returns NULL if no errors have occurred since initialization or since it was last called.
*
* Parameter Input:
*	FILE* pstream
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxDlerror(void)
{
    return dlerror();
}

/***********************************************************
* Name:
*	LuxTime
*
* Summary:
*	returns the time as the number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC)..
*
* Return Value:
*	On success, the value of time in seconds since the Epoch is returned.
*	On error, ((time_t) -1) is returned, and errno is set appropriately..
*
* Parameter Input:
*	time_t* timep
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
time_t LuxTime(time_t* timep)
{
    return time(timep);
}


/***********************************************************
* Name:
*	LuxCtime
*
* Summary:
*	It converts the calendar time t into a null-terminated string.
*
* Return Value:
*	On success, LuxCtime() return a pointer to a string.
*	On failed, return NULL.
*
* Parameter Input:
*	time_t* timep
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxCtime(const time_t* timep)
{
    return ctime(timep);
}
/***********************************************************
* Name:
*	LuxAsctime
*
* Summary:
*	The  LuxAsctime()  function  converts the broken-down time value tm into a null-terminated string with the same format as ctime().
*
* Return Value:
*	On success, LuxAsctime() return a pointer to a string.
*	On failed, return NULL.
* Parameter Input:
*	struct tm* tm
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxAsctime(const struct tm* tm)
{

    return asctime(tm);

}
/***********************************************************
* Name:
*	LuxGmtime
*
* Summary:
*	The gmtime() function converts the calendar time timep to broken-down time representation, expressed in Coordinated Universal Time (UTC)
* Return Value:
*	On success, gmtime() return a pointer to a struct tm.
*
* Parameter Input:
*	time_t* timep
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

struct tm* LuxGmtime(const time_t* timep)
{

    return gmtime(timep);

}

/***********************************************************
* Name:
*	LuxLocaltime
*
* Summary:
*	The localtime() function converts the calendar time timep to broken-down time representation, expressed relative to the user's specified timezone.
* Return Value:
*	On success, localtime() return a pointer to a struct tm.
*
* Parameter Input:
*	time_t* timep
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

struct tm* LuxLocaltime(const time_t* timep)
{

    return localtime(timep);

}

/***********************************************************
* Name:
*	LuxMktime
*
* Summary:
*	The  mktime()  function converts a broken-down time structure, expressed as local time, to calendar time representation.
* Return Value:
*	On success, mktime() returns the calendar time (seconds since the Epoch), expressed as a value of type time_t.
*	On fail, return (time_t) -1
* Parameter Input:
*	time_t* timep
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
time_t LuxMktime(struct tm* tm)
{
    return mktime(tm);
}

/***********************************************************
* Name:
*	LuxMalloc
*
* Summary:
*	The malloc() function allocates size bytes and returns a pointer to the allocated memory.
*
* Return Value:
*	The  malloc() functions return a pointer to the allocated memory, which is suitably aligned for any  built-in  type.
*	On  error, the function return NULL
* Parameter Input:
*	size_t size
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void* LuxMalloc(size_t size)
{
    return malloc(size);
}
/***********************************************************
* Name:
*	LuxCalloc
*
* Summary:
*	The  calloc()  function allocates memory for an array of nmemb elements
*       of size bytes each and returns a pointer to the allocated memory..
*
* Return Value:
*	The  calloc() functions return a pointer to the allocated memory, which is suitably aligned for any  built-in  type.
*	On  error, the function return NULL
* Parameter Input:
*	size_t size
*	size_t nmemb
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

void* LuxCalloc(size_t nmemb, size_t size)
{
    return calloc(nmemb, size);
}
/***********************************************************
* Name:
*	LuxRealloc
*
* Summary:
*	The  realloc() function changes the size of the memory block pointed to
*       by ptr to size bytes.
*
* Return Value:
*	The  realloc() function changes the size of the memory block pointed to
*       by ptr to size bytes.
*	On  error, the function return NULL
* Parameter Input:
*	void* ptr
*	size_t size
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

void* LuxRealloc(void* ptr, size_t size)
{

    return realloc(ptr, size);
}
/***********************************************************
* Name:
*	LuxFree
*
* Summary:
*	The free() function frees the memory space pointed  to  by  ptr,  which
*       must  have  been  returned by a previous call to malloc(), calloc(), or
*       realloc()..
* Return Value:
*	None
*
* Parameter Input:
*	void* ptr
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void LuxFree(void* ptr)
{
    free(ptr);
}
/***********************************************************
* Name:
*	LuxRand
*
* Summary:
*	The rand outputs num pseudo-random bytes after seeding the random number generator once
*
* Return Value:
*	The rand() functions return a value between 0 and RAND_MAX (inclusive)
*
* Parameter Input:
*	None
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxRand(void)
{
    return rand();
}
/***********************************************************
* Name:
*	LuxSrand
*
* Summary:
*	pseudo-random number generator
*
* Return Value:
*	None
*
* Parameter Input:
*	unsigned int iSeed
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/

void LuxSrand(unsigned int iSeed)
{
    srand(iSeed);
}

/***********************************************************
* Name:
*	LuxAccess
*
* Summary:
*	LuxAccess checks whether the calling process can access the file pathname. If pathname is a symbolic link, it is dereferenced
*
* Return Value:
*	On success , zero is returned. On error , -1 is returned.
*
* Parameter Input:
*	pcPathName:
*            Input pathName
*   mode:
*        F_OK
*        R_OK
*        W_OK
*        X_OK
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxAccess(const char* pcPathName,int mode)
{
    if(NULL == pcPathName)
    {
        return -1;
    }
    return access(pcPathName,mode);
}
/***********************************************************
* Name:
*	LuxReaddir
*
* Summary:
*	 The  LuxReaddir()  function returns a pointer to a dirent structure repre�
*       senting the next directory entry in the directory stream pointed to  by
*       dirp.   It  returns NULL on reaching the end of the directory stream or
*       if an error occurred.
*
*
* Return Value:
*	On  success,  readdir() returns a pointer to a dirent structure.  (This
*       structure may be statically allocated; do not attempt to free(3) it.)
*       If the end of the directory stream is reached,  NULL  is  returned  and
*       errno  is  not changed.  If an error occurs, NULL is returned and errno
*       is set appropriately.  To distinguish end of stream and from an  error,
*       set  errno to zero before calling readdir() and then check the value of
*       errno if NULL is returned.
*
*
* Parameter Input:
*	pcPathName:
*            Input DIR
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
struct dirent*  LuxReaddir(DIR* psDir)
{
    if(NULL == psDir)
    {
        return NULL;
    }
    return readdir(psDir);
}
/***********************************************************
* Name:
*	LuxMkdir
*
* Summary:
*	 mkdir() attempts to create a directory named pcPathName
*
* Return Value:
*	mkdir() and mkdirat() return zero on success, or -1 if an error occurred
* Parameter Input:
*	pcPathName:
*            Input char* pcPathName:DirName
*            mode_t mode:permission
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/

int LuxMkdir(const char* pcPathName,mode_t mode)
{
    if(NULL == pcPathName)
    {
        return -1;
    }
    return mkdir(pcPathName,mode);
}
/***********************************************************
* Name:
*	LuxClosedir
*
* Summary:
*	 The  LuxClosedir()  function  closes  the  directory stream associated with dirp.
*    A successful call to closedir() also closes the underlying file descriptor associated with dirp.
*    The directory stream descriptor dirp is not available after this call
*
* Return Value:
*	The closedir() function returns 0 on success.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input DIR* psDir:DirName
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/

int	LuxClosedir(DIR* psDir)
{
    if(NULL == psDir)
    {
        return -1;
    }
    return closedir(psDir);
}
/***********************************************************
* Name:
*	LuxChdir
*
* Summary:
*	 LuxChdir() changes the current working directory of the calling process to the directory specified in path.
*
* Return Value:
*	On success, zero is returned.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input const char* pcPathName :DirName
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int	LuxChdir(const char* pcPathName)
{
    if(NULL == pcPathName)
    {
        return -1;
    }
    return chdir(pcPathName);
}
/***********************************************************
* Name:
*	LuxRmdir
*
* Summary:
*	  LuxRmdir() deletes a directory, which must be empty.
*
* Return Value:
*	 On success, zero is returned.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input const char* pcPathName :DirName
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int	LuxRmdir(const char* pcPathname)
{
    if(NULL == pcPathname)
    {
        return -1;
    }
    return rmdir(pcPathname);
}
/***********************************************************
* Name:
*	LuxChmod
*
* Summary:
*	   chmod() changes the mode of the file specified whose pathname is given in pathname, which is dereferenced if it is a symbolic link.
*
* Return Value:
*	 On success, zero is returned.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input const char* pcFilename :file name
*            Input mode_t mode :mode
*
* Parameter Output:
*	None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int	LuxChmod(const char* pcFilename,mode_t mode)
{
    if(NULL == pcFilename)
    {
        return -1;
    }
    return chmod(pcFilename,mode);
}
/***********************************************************
* Name:
*	LuxClockgettime
*
* Summary:
*	    The  function  clock_getres()  finds  the resolution (precision) of the specified clock clk_id, and, if res is non-NULL, stores it in the struct timespec pointed to by res.  The resolution of
*       clocks depends on the implementation and cannot be configured by a particular process.  If the time value pointed to by the argument tp of clock_settime() is not a multiple of res, then it is
*       truncated to a multiple of res.
*
* Return Value:
*	 On success, zero is returned.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input __clockid_t ClockId :The  ClockId argument is the identifier of the particular clock on which to act.
*            Output struct timespec* psTimeSpec :stores it in the struct timespec pointed to by psTimeSpec
*
* Parameter Output:
*	         Output struct timespec* psTimeSpec :stores it in the struct timespec pointed to by psTimeSpec
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int  LuxClockgettime (__clockid_t ClockId, struct timespec* psTimeSpec)
{
    if(NULL == psTimeSpec)
    {
        return -1;
    }
    return clock_gettime(ClockId,psTimeSpec);
}

/***********************************************************
* Name:
*	LuxClocksettime
*
* Summary:
*	    The  function  LuxClocksettime()  finds  the resolution (precision) of the specified clock clk_id, and, if res is non-NULL, stores it in the struct timespec pointed to by res.  The resolution of
*       clocks depends on the implementation and cannot be configured by a particular process.  If the time value pointed to by the argument tp of clock_settime() is not a multiple of res, then it is
*       truncated to a multiple of res.
*
*
* Return Value:
*	 On success, zero is returned.  On error, -1 is returned.
* Parameter Input:
*	pcPathName:
*            Input __clockid_t ClockId :The  ClockId argument is the identifier of the particular clock on which to act.
*            Input struct timespec* psTimeSpec :If the time value pointed to by the argument tp of clock_settime() is not a multiple of res, then it is
*       truncated to a multiple of psTimeSpec.
*
* Parameter Output:
*	     None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int  LuxClocksettime (__clockid_t ClockId, struct timespec* psTimeSpec)
{
    if(NULL == psTimeSpec)
    {
        return -1;
    }
    return clock_settime(ClockId,psTimeSpec);
}
/***********************************************************
* Name:
*	LuxOpendir
*
* Summary:
*	    fgetc() reads the next character from stream and returns it as an unsigned char cast to an int, or EOF on end of file or error.
*
* Return Value:
* 		returns it as an unsigned char cast to an int, or EOF on end of file or error.
* Parameter Input:
*	Input FILE *pstream : in file
*
* Parameter Output:
*	     None
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int  LuxFgetc(FILE *pstream)
{
    return fgetc(pstream);
}
/***********************************************************
* Name:
*	LuxFputc
*
* Summary:
*	     LuxFputc() writes the character c, cast to an unsigned char, to stream.

*
*
* Return Value:
*	 return the character written as an unsigned char cast to an int or EOF on error.
* Parameter Input:
*	pcPathName:
*            Input int chara :character to file stream.
*            Input FILE *pstream : in file
*
* Parameter Output:
*	     None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int  LuxFputc(int chara, FILE *pstream)
{
    return fputc(chara,pstream);
}

/***********************************************************
* Name:
*	LuxFerror
*
* Summary:
*	    ferror() tests the error indicator for the stream pointed to by stream.
*
* Return Value:
*	 returning nonzero if it is set.  The error indicator can be reset only by the clearerr() function.
* Parameter Input:
*	pcPathName:
*            Input FILE *pstream : in file
*
* Parameter Output:
*	     None
*
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int  LuxFerror(FILE *pstream)
{
    if(NULL == pstream)
    {
        return 0;
    }
    return ferror(pstream);
}
/***********************************************************
* Name:
*	LuxOpendir
*
* Summary:
*	    The  opendir() function opens a directory stream corresponding to the directory name.
*
* Return Value:
*	  and returns a pointer to the directory stream.  The stream is positioned at the first entry in the direc‐tory.
* Parameter Input:
*	pcPathName:
*            Input const char *pcdirname : in file
*
* Parameter Output:
*	     None
* Author:
*	alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
DIR* LuxOpendir(const char *pcdirname)
{
    if(NULL == pcdirname)
    {
        return NULL;
    }
    return opendir(pcdirname);
}
/***********************************************************
* Name:
*	LuxInetNtop
*
* Summary:
*	convert IPv4 and IPv6 addresses from binary to text form
*
* Return Value:
*	On success, inet_ntop() returns a non-null pointer  to  dst.   
*   NULL  is returned if there was an error, with errno set to indicate the error.
*
* Parameter Input:
*        AF_INET
*              src points to a struct in_addr (in network byte order) which  is
*              converted  to an IPv4 network address in the dotted-decimal for©\
*              mat,  "ddd.ddd.ddd.ddd".   The  buffer  dst  must  be  at  least
*              INET_ADDRSTRLEN bytes long.
*       AF_INET6
*              src points to a struct in6_addr (in network byte order) which is
*              converted to a representation of this address in the most appro©\
*              priate IPv6 network address format for this address.  The buffer
*              dst must be at least INET6_ADDRSTRLEN bytes long.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
const char* LuxInetNtop(int af, const void* pSrc, char* pcDst, size_t size)
{
    return inet_ntop(af,pSrc,pcDst,size);
}
/***********************************************************
* Name:
*	LuxInetPton
*
* Summary:
*	convert IPv4 and IPv6 addresses from text to binary form
*
* Return Value:
*	inet_pton()  returns 1 on success (network address was successfully converted).  
*   0 is returned if src does not contain a character string representing a valid network address in the specified
*    address family.  
*    If af does not contain a valid address family, -1 is returned and errno is set to EAFNOSUPPORT.
*
* Parameter Input:
*        AF_INET
*              src points to a struct in_addr (in network byte order) which  is
*              converted  to an IPv4 network address in the dotted-decimal for©\
*              mat,  "ddd.ddd.ddd.ddd".   The  buffer  dst  must  be  at  least
*              INET_ADDRSTRLEN bytes long.
*       AF_INET6
*              src points to a struct in6_addr (in network byte order) which is
*              converted to a representation of this address in the most appro©\
*              priate IPv6 network address format for this address.  The buffer
*              dst must be at least INET6_ADDRSTRLEN bytes long.
*
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxInetPton(int af, const char *pcSrc, void *pDst)
{
    return inet_pton(af,pcSrc,pDst);
}
/***********************************************************
* Name:
*	LuxInetNtoa
*
* Summary:
*	The inet_ntoa() function converts the Internet host address in, given in network byte order, to a string in IPv4 dotted-decimal notation.  
*
* Return Value:
*   The IPV4 address string
* Parameter Input:
*   struct in_addr in
* Parameter Output:
*	None
*
* Author:
*	chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
char* LuxInetNtoa(struct in_addr in)
{
    return inet_ntoa(in);
}

/***********************************************************
* Name:
*   LuxSocket
*
* Summary:
*   LuxSocket
*
* Return Value:
*   None
*
* Parameter Input:
*   int domain
*   int type
*   int protocol
*
* Parameter Output:
*   None
*
* Author:
*   yulin.yl@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxSocket(int domain, int type, int protocol)
{
    return socket(domain, type, protocol);
}

/***********************************************************
* Name:
*   LuxIoctl
*
* Summary:
*   manipulates the underlying device parameters of special files
*
* Return Value:
*   Usually, on success zero is returned.  A few ioctl() requests  use  the return  value  as an output parameter and return a nonnegative value on success.  On error, -1 is returned, and errno is set appropriately.
*
* Parameter Input:
*   int fd, unsigned long request, ...
*
* Parameter Output:
*   None
*
* Author:
*   Wenyu.Li@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxIoctl(int fd, unsigned long request, ...)
{
    int iRet = 0; 
    va_list args;
    unsigned long arg;   
    va_start(args,request); 
    arg = va_arg(args,unsigned long);
    iRet = ioctl(fd,request, arg);
    va_end(args);
    return iRet;
}

/***********************************************************
* Name:
*   LuxReboot
*
* Summary:
*   LuxReboot
*
* Return Value:
*   None
*
* Parameter Input:
*   int iFlag
*
* Parameter Output:
*   None
*
* Author:
*   tina.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void LuxReboot(int iFlag)
{
    reboot(iFlag);
}
/***********************************************************
* Name:
*   LuxGetaddrinfo
*
* Summary:
*   LuxGetaddrinfo
*
* Return Value:
*   None
*
* Parameter Input:
*   int iFlag
*
* Parameter Output:
*   None
*
* Author:
*   chin.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxGetaddrinfo( const char *hostname, const char *service, const struct addrinfo *hints, struct addrinfo **result )
{
    return getaddrinfo(hostname,service,hints,result);
}
/***********************************************************
* Name:
*   LuxAtoi
*
* Summary:
*   LuxAtoi
*
* Return Value:
*   int
*
* Parameter Input:
*   const char* paddr
*
* Parameter Output:
*   None
*
* Author:
*   alex-hl.huang@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxAtoi(const char* paddr)
{
    return atoi(paddr);
}

/***********************************************************
* Name:
*   LuxRegcomp
*
* Summary:
*   LuxRegcomp
*
* Return Value:
*   int
*
* Parameter Input:
*   regex_t *compiled
*   const char *pattern
*   int cflags
*
* Parameter Output:
*   None
*
* Author:
*   tina.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxRegcomp(regex_t *compiled, const char *pattern, int cflags)
{
    return regcomp(compiled, pattern,cflags);
}

/***********************************************************
* Name:
*   LuxRegexec
*
* Summary:
*   LuxRegexec
*
* Return Value:
*   int
*
* Parameter Input:
*   regex_t *compiled
*   char *string
*   size_t nmatch
*   regmatch_t matchptr[]
*   int eflags
*
* Parameter Output:
*   None
*
* Author:
*   tina.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
int LuxRegexec(regex_t *compiled, char *string, size_t nmatch, regmatch_t matchptr[], int eflags)
{
    return regexec(compiled, string,nmatch,matchptr,eflags);
}

/***********************************************************
* Name:
*   LuxRegfree
*
* Summary:
*   LuxRegfree
*
* Return Value:
*   int
*
* Parameter Input:
*   regex_t *compiled
*
* Parameter Output:
*   None
*
* Author:
*   tina.chen@luxshare-ict.com: Initial Version
*
***********************************************************/
void LuxRegfree(regex_t *compiled)
{
    return regfree(compiled);
}