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Diff for /libaitio/inc/aitio.h between versions 1.2 and 1.38

version 1.2, 2010/03/09 09:26:27 version 1.38, 2013/11/22 15:09:17
Line 1 Line 1
 /*************************************************************************  /*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
*  by Michael Pounov <misho@openbsd-bg.org>*  by Michael Pounov <misho@elwix.org>
 *  *
 * $Author$  * $Author$
 * $Id$  * $Id$
 *  *
*************************************************************************/**************************************************************************
 The ELWIX and AITNET software is distributed under the following
 terms:
 
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
 Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
         by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 3. All advertising materials mentioning features or use of this software
    must display the following acknowledgement:
 This product includes software developed by Michael Pounov <misho@elwix.org>
 ELWIX - Embedded LightWeight unIX and its contributors.
 4. Neither the name of AITNET nor the names of its contributors
    may be used to endorse or promote products derived from this software
    without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGE.
 */
 #ifndef __AITIO_H  #ifndef __AITIO_H
 #define __AITIO_H  #define __AITIO_H
   
   
typedef struct _tagURLItem {#define COMPAT_43TTY
        int     vallen; 
        char    *value; 
} url_Item_t; 
   
struct tagIOURL {#include <assert.h>
        unsigned char   url_line[BUFSIZ];#include <syslog.h>
 #include <openssl/evp.h>
 #include <openssl/aes.h>
 #include <sys/tty.h>
 #include <sys/ioctl_compat.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <sys/uio.h>
 #include <net/if_dl.h>
 #include <net/bpf.h>
 #include <netinet/in.h>
 #include <elwix.h>
 #include <aitsched.h>
   
         url_Item_t      url_tech;  
         url_Item_t      url_user;  
         url_Item_t      url_pass;  
         url_Item_t      url_host;  
         url_Item_t      url_port;  
         url_Item_t      url_path;  
         url_Item_t      url_args;  
   
        char            *url_reserved;#ifndef STRSIZ
 #define STRSIZ                  256
 #endif
 
 #define IO_SOCK_ROLE_CLIENT     0
 #define IO_SOCK_ROLE_SERVER     1
 
 #define IO_ETHER_FILTER_PROMISC 0
 #define IO_ETHER_FILTER_NOTREAD -1
 #define IO_ETHER_FILTER_READ    1
 #define IO_ETHER_FILTER_WRITE   2
 
 
 typedef struct tagCliSock sock_cli_t;
 typedef void *(*sock_cb_t)(sock_cli_t*);
 struct tagCliSock {
         void                            *cli_parent;
         int                             cli_fd;
         int                             cli_pty;
         sockaddr_t                      cli_addr;
         char                            cli_name[64];
         char                            cli_cmdline[PATH_MAX];
         pid_t                           cli_pid;
 
         sched_task_func_t               cli_func;
 
         ait_val_t                       cli_buf[2];
 
         TAILQ_ENTRY(tagCliSock)         cli_node;
 };  };
   
   typedef struct {
           int                             sock_role;
           int                             sock_backq;
           int                             sock_type;
           int                             sock_proto;
           int                             sock_fd;
           struct timespec                 sock_timeout;
           sockaddr_t                      sock_addr;
           sockaddr_t                      sock_peer;
   
           ait_val_t                       sock_buf;
   
           volatile intptr_t               sock_kill;
           sched_root_task_t               *sock_root;
   
           pthread_mutex_t                 sock_mtx;
           TAILQ_HEAD(, tagCliSock)        sock_cli;
   } sock_t;
   
   
 // io_GetErrno() Get error code of last operation  // io_GetErrno() Get error code of last operation
inline int io_GetErrno();int io_GetErrno();
 // io_GetError() Get error text of last operation  // io_GetError() Get error text of last operation
inline const char *io_GetError();const char *io_GetError();
   
   
 /*  /*
 * ioPromptRead() Read data from input h[0] with prompt to output h[1] * ioInitSocket() - Init socket and allocate resources
  *
  * @role = Socket role
  * @type = Socket type
  * @proto = Socket protocol
  * @addr = Bind to address
  * @port = Bind to port
  * @buflen = Socket buffer, optional if =0 == BUFSIZ
  * return: NULL error or !=NULL created socket
  */
 sock_t *ioInitSocket(int role, int type, int proto, 
                 const char *addr, unsigned short port, size_t buflen);
 /*
  * ioCloseSocket() - Close socket and free resources
  *
  * @s = Socket
  * return: none
  */
 void ioCloseSocket(sock_t ** __restrict s);
 #define ioKillSocket(x)         (assert((x)), (x)->sock_kill = 1)
 /*
  * ioCloseClient() - Close client socket
  *
  * @c = Client socket
  * return: 0 ok or !=0 error
  */
 int ioCloseClient(sock_cli_t * __restrict c);
 /*
  * ioUpSocket() - Setup socket for use
  *
  * @s = Socket
  * @arg = Server role = listen backlog queue and Client role = peer address
  * @timeout = Socket timeout in ms (default -1 infinit)
  * return: -1 error or 0 ok
  */
 int ioUpSocket(sock_t * __restrict s, void *arg, int timeout);
 /*
  * ioUpdTimerSocket() - Update timeout of socket
  *
  * @c = Client socket
  * return:  none
  */
 void ioUpdTimerSocket(sock_cli_t * __restrict c);
 /*
  * ioLoopSocket() - Start socket scheduler
  *
  * @s = Socket
  * @rcb = Read callback
  * return: -1 error or return result from scheduler
  */
 int ioLoopSocket(sock_t * __restrict s, sched_task_func_t rcb);
 /*
  * ioBridgeProg2Socket() - Start socket scheduler and bridge program to socket
  *
  * @s = Socket
  * @prgname = Program name
  * return: 0 ok or !=0 error
  */
 int ioBridgeProg2Socket(sock_t * __restrict s, const char *prgname);
 
 /*
  * ioPromptRead() - Read data from input h[0] with prompt to output h[1]
  *
  * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout   * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
  * @csPrompt = Prompt before input, may be NULL   * @csPrompt = Prompt before input, may be NULL
  * @psData = Readed data   * @psData = Readed data
  * @dataLen = Length of data   * @dataLen = Length of data
  * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars   * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
 */  */
int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);int ioPromptRead(int *h, const char *csPrompt, 
                 char * __restrict psData, int dataLen);
 /*  /*
 * ioPromptPassword() Read password from input h[0] with prompt to output h[1] * ioPromptPassword() - Read password from input h[0] with prompt to output h[1]
  *
  * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout   * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
  * @csPrompt = Prompt before input, may be NULL   * @csPrompt = Prompt before input, may be NULL
  * @psPass = Readed password   * @psPass = Readed password
Line 53  int ioPromptRead(int *h, const char *csPrompt, char *  Line 204  int ioPromptRead(int *h, const char *csPrompt, char * 
  * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation   * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
  * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars   * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
 */  */
int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);int ioPromptPassword(int *h, const char *csPrompt, 
                 char * __restrict psPass, int passLen, int confirm);
   
   
 /*  /*
 * ioRegexVerify() Function for verify data match in regex expression * ioMkDir() - Function for racursive directory creation and validation
 * @csRegex = Regulare expression pattern *
 * @csData = Data for check and verify * @csDir = Full directory path
 * @startPos = Return start positions * @mode = Mode for directory creation if missing dir
 * @endPos = Return end positions * return: -1 error, 0 directory path exist, >0 created missing dirs
 * return: NULL not match or error; !=NULL begin of matched data 
 */  */
const char *ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos);int ioMkDir(const char *csDir, int mode);
 
 /*  /*
 * ioRegexGet() Function for get data match in regex expression * ioWatchDirLoop() - Function for watching changes in directory and fire callback
 * @csRegex = Regulare expression pattern *
 * @csData = Data from get * @csDir = Full directory path
 * @psString = Returned string if match * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create
 * @strLen = Length of string * return: -1 error, !=-1 ok, number of total signaled events
 * return: 0 not match; >0 count of returned chars 
 */  */
int ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen);int ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp));
 
 
 #ifdef AIO_OPS
 /*  /*
 * ioRegexReplace() Function for replace data match in regex expression with newdata * io_aiobulk() - AIO bulk R/W function
 * @csRegex = Regulare expression pattern *
 * @csData = Source data * @mode = Bulk wait mode
 * @csNew = Data for replace * @acbs = List of aiocb structures
 * return: NULL not match or error; !=NULL allocated new string, must be free after use! * @nacb = Number of aiocb in list
*/ * @sig = Event for completed operations, may be =NULL
char *ioRegexReplace(const char *csRegex, const char *csData, const char *csNew); * return: -1 error or 0 ok
  */
 int io_aiobulk(int mode, struct aiocb ** __restrict acbs, int nacb, 
                 struct sigevent *sig);
 #endif
 /*
  * io_rreadv() - Raw VFS bulk read function
  *
  * @fd = File handle
  * @bufs = Read buffers
  * @nbufs = Number of read buffers
  * @offset = Read from position, if -1 read nbytes from current position
  * @update = Update file handle position !0
  * return: -1 error or !=-1 readed bytes
  */
 int io_rreadv(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset, 
                 int update);
 /*
  * io_rwritev() - Raw VFS bulk write function
  *
  * @fd = File handle
  * @bufs = Write buffers
  * @nbufs = Number of write buffers
  * @offset = Write to position, if -1 write nbytes to current position
  * @update = Update file handle position !0
  * return: -1 error or !=-1 written bytes
  */
 int io_rwritev(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset, 
                 int update);
 /*
  * io_rread() - Raw VFS read function
  *
  * @fd = File handle
  * @buf = Read buffer
  * @nbytes = Read buffer size
  * @offset = Read from position, if -1 read nbytes from current position
  * @update = Update file handle position !0
  * return: -1 error or !=-1 readed bytes
  */
 int io_rread(int fd, void * __restrict buf, size_t nbytes, off_t offset, 
                 int update);
 /*
  * io_rwrite() - Raw VFS write function
  *
  * @fd = File handle
  * @buf = Write buffer
  * @nbytes = Write bytes from buffer
  * @offset = Write at position, if -1 write nbytes from current position
  * @update = Update file handle position !0
  * return: -1 error or !=-1 written bytes
  */
 int io_rwrite(int fd, void * __restrict buf, size_t nbytes, off_t offset, 
                 int update);
   
   /* Disk I/O helper macros */
   #define io_read(f, b, n) io_rread(f, b, n, -1, 1)
   #define io_write(f, b, n) io_rwrite(f, b, n, -1, 1)
   
   
   /* Crypto framework */
   
 /*  /*
 * io_Path2File() Parse and make path/filename pair * ioCipher() - Cipher wrapper for all supported crypto algorythms
 * @csArgs = Input argument line *
 * @psPath = Output Path, if ==NULL path not returned * @pInput = input buffer
 * @pathLen = Size of path array * @inLen = input buffer len
 * @psFile = Output File * @ppOutput = output allocated buffe, must be e_free after use
 * @fileLen = Size of file array * @Cipher = cipher engine, like EVP_bf_cbc() or etc...
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items * @pKey = key
  * @pIV = IV, salt (8 bytes)
  * @nMode = Mode 0 - decrypting or 1 - encrypting
  * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
 */  */
inline int io_Path2File(const char * __restrict csArgs, char * __restrict psPath, int pathLen, int ioCipher(unsigned char *pInput, int inLen, unsigned char **ppOutput, const EVP_CIPHER *Cipher, 
                char * __restrict psFile, int fileLen);                unsigned char *pKey, unsigned char *pIV, int nMode);
 
 /*  /*
 * io_MakeAV() Parse and make attribute/value pair * io_Blowfish() - Blowfish cipher algorythm, work with ASCII hex strings
 * @csArgs = Input argument line *
 * @csDelim = Delimiter for separate * @pInput = input buffer
 * @psAttr = Output Attribute * @inLen = input buffer len
 * @attrLen = Size of attribute array * @ppOutput = output allocated buffe, must be e_free after use
 * @psValue = Output Value, if ==NULL this element not present value or not wanted for return * @pKey = key
 * @valLen = Size of value array * @pIV = IV, salt (8 bytes)
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items * @nMode = Mode 0 - decrypting or 1 - encrypting
  * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
 */  */
inline int io_MakeAV(const char * __restrict csArgs, const char *csDelim, int io_Blowfish(unsigned char *pInput, int inLen, unsigned char **ppOutput, 
                char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen);                unsigned char *pKey, unsigned char *pIV, int nMode);
 /*  /*
 * io_SizeArray() Parse and calculate size of array * io_ctr_AES() - Encrypt/Decrypt stream cipher CTR_AES
 * @csArgs = Input arguments line *
 * @csDelim = Delimiter(s) for separate * @pInput = Input buffer with ASCII
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of items * @inLen = Input buffer data length
*/ * @ppOutput = Output buffer with cipher data, must be e_free after use
inline int io_SizeArray(const char *csArgs, const char *csDelim); * @pKey = Key
  * @IV = IVector/Nonce/Counter, Warning: IV must be variable, because we write there!!!
  * return: -1 error or >-1 how many cipher blocks proceeded
  */
 int io_ctr_AES(unsigned char *pInput, int inLen, unsigned char **ppOutput, 
                 unsigned char *pKey, unsigned char IV[AES_BLOCK_SIZE]);
 
 
 /*  /*
 * io_MakeArray() Parse and make array of arguments values * ioAllocPTY() - Allocate new PTY and TTY
 * @psArgs = Input arguments line *
 * @csDelim = Delimiter(s) for separate * @ptyfd = master fd, pty
 * @args = Output array of arguments ... (must be free() after procced function!) * @ttyfd = slave fd, tty
 * @nargs = Requested count of arguments * @name = tty device name if not null
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items * @namesiz = name length, must be above 63 bytes.
*/ * @term = termios for terminal
inline int io_MakeArray(char * __restrict psArgs, const char *csDelim,  * @winz = winsize for terminal
                char *** __restrict args, int nargs); * return: -1 error or 0 ok
  */
 int ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict name, int namesiz, 
                 struct termios * __restrict term, struct winsize * __restrict winz);
 /*
  * ioFreePTY() - Release PTY and TTY device
  *
  * @ptyfd = master fd, pty (==-1 skip closing pty)
  * @ttyname = tty filename
  * return: none
  */
 void ioFreePTY(int ptyfd, const char *ttyname);
 /*
  * ioChgWinPTY() - Change window size of PTY
  *
  * @ptyfd = master fd, pty
  * @row = row
  * @col = col
  * @xpxl = x pixels
  * @ypxl = y pixels
  * return: -1 error or 0 ok
  */
 int ioChgWinPTY(int ptyfd, unsigned short row, unsigned short col, 
                 unsigned short xpxl, unsigned short ypxl);
 /*
  * ioSetOwnerTTY() - Set owner to TTY
  *
  * @ttyname = tty filename
  * @UID = uid
  * @GID = gid
  * return: -1 error or 0 ok
  */
 int ioSetOwnerTTY(const char *ttyname, uid_t UID, gid_t GID);
 /*
  * ioSetSidTTY() - Makes the process's controlling TTY and sets it to sane modes.
  *
  * @ttyfd = slave fd, tty
  * @ttyname = tty filename
  * return: -1 error or 0 ok
  */
 int ioSetSidTTY(int *ttyfd, const char *ttyname);
 /*
  * ioSetRAWMode() - Enter into RAW mode
  *
  * @fd = tty fd
  * @otio = saved old termios for later restore if !=NULL
  * return: -1 error or 0 ok
  */
 int ioSetRAWMode(int fd, struct termios *otio);
 /*
  * ioRestoreMode() - Restore termios to tty fd
  *
  * @fd = tty fd
  * @tio = termios structure for restore
  * return: -1 error or 0 ok
  */
 int ioRestoreMode(int fd, struct termios tio);
 /*
  * ioForkPTY() - Fork new process with session leader and new TTY
  *
  * @ptyfd = master fd, pty
  * @name = tty device name if not null
  * @namesiz = name length, must be above 63 bytes.
  * @term = termios for terminal
  * @winz = winsize for terminal
  * @otio = old termios structure for restore
  * return: -1 error, 0 child process or >0 parent: pid of child
  */
 pid_t ioForkPTY(int *ptyfd, char * __restrict name, int namesiz, struct termios * __restrict term, 
                 struct winsize * __restrict winz, struct termios * __restrict otio);
   
 /*  /*
 * ioURLGet() Parse and get data from input URL * ioCreatePIDFile() - Create PID file
 * @csURL = Input URL line *
 * @url = Output parsed URL * @csName = PID filename
 * return: 0 error format not find tech:// and return URL like path;  * @ifExists = !=0 if filename exists return error
                -1 error:: can`t read; >0 ok, up bits for known elements * return: -1 error or 0 ok
*/ */
int ioURLGet(const char *csURL, struct tagIOURL *url);int ioCreatePIDFile(const char *csName, int ifExists);
 
 /*  /*
 * ioURLGetValue() Get value from parsed URL * ioSendFile() - AITNET sendfile() userland implementation, not dependant from OS
 * @url = Input parsed URL *
 * @csAttr = Attribute for search * @s = socket
 * @psValue = Return value of attribute, if ==NULL only check for existence of attribute * @csFile = file for send
 * @valLen = Size of psValue array * @sendLen = bytes to send, if 0 send all data
 * return: 0 error attribute not find; -1 error:: can`t read; >0 ok, find at position * @offset = start file offset
*/ * @sndbuf = SO_SNDBUF value, if 0 use default
int ioURLGetValue(struct tagIOURL *url, const char *csAttr, char * __restrict psValue, int valLen); * return: 0 error, >0 ok, sended bytes
  */
 size_t ioSendFile(int s, const char *csFile, size_t sendLen, off_t offset, int sndbuf);
 /*  /*
 * ioURLGetFile() Get file from parsed URL * ioRecvFile() - Receive file from socket, fastest (zero-copy) way
 * @url = Input parsed URL *
 * @psValue = Return filename, if not specified file in url path, replace with / * @s = socket
 * @valLen = Size of psValue array * @csFile = file for receive
 * return: -1 error:: can`t read; 0 ok * @recvLen = receive bytes
*/ * @over = overwrite file if exists with mode like 0644
int ioURLGetFile(struct tagIOURL *url, char * __restrict psValue, int valLen); * @rcvbuf = SO_RCVBUF value, if 0 use default
  * return: 0 error, >0 ok, received bytes
  */
 size_t ioRecvFile(int s, const char *csFile, size_t recvLen, int over, int rcvbuf);
 
 /*
  * ioRealFileName() - Get real file name
  *
  * @fname = filename
  * return: =NULL error or !=NULL real filename, should be free with e_free()
  */
 char *ioRealFileName(const char *fname);
 
 /* Buffered file access over memory block */
 
 /*
  * io_fmemopen() - File buffered stream operations over memory block
  *
  * @base = Base address of memory block, if =NULL Infinit length(auto-grow)
  * @basesize = Size of memory block
  * return: NULL error or !=NULL Opened file resource
  */
 FILE *io_fmemopen(void ** __restrict base, off_t basesize);
 /*
  * io_fmapopen() - File buffered stream operations over MMAP block
  *
  * @csFile = Filename for MMAP, if =NULL private MMAP block
  * @mode = File open mode
  * @perm = If file not exists will be created with this access permissions
  * @prot = MMAP protection
  * @flags = MMAP mode flags
  * @offset = Map from file offset, if csFile==NULL then this is size of MMAP private block
  * return: NULL error or !=NULL Opened file resource
  */
 FILE *io_fmapopen(const char *csFile, int mode, int perm, int prot, int flags, off_t offset);
 /*
  * io_fd2buf() - Convert open file handle to buffered file I/O
  *
  * @fd = File handle
  * @mode = Permissions for new buffered file I/O
  * return: NULL error or open buffered file
  */
 FILE *io_fd2buf(int fd, const char *mode);
 /*
  * io_dumbFile() - Create empry or dumb file with fixed size
  *
  * @csFile = Filename for create
  * @mode = File access permissions
  * @size = File size
  * return: -1 error or open file handle
  */
 int io_dumbFile(const char *csFile, int mode, off_t size);
 
 
 /*
  * io_get1stiface() - Get first interface of host
  *
  * @szIface = interface string buffer
  * @iflen = size of interface buffer
  * return: -1 error or 0 ok
  */
 int io_get1stiface(char *szIface, int iflen);
 /*
  * io_etherOpen() - Open BPF interface to device
  *
  * @csIface = interface name
  * @flags = open flags
  * @whdr = with complete headers
  * @wdlt = with data link type
  * @buflen = buffer length
  * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
  * return: -1 error or >-1 bpf handle
  */
 int io_etherOpen(const char *csIface, int flags, int whdr, int wdlt, 
                 unsigned int *buflen, void **zcbuf);
 /*
  * io_etherClose() - Close BPF interface
  *
  * @eth = bpf handle
  * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
  * return: none
  */
 void io_etherClose(int eth, void **zcbuf);
 
 /*
  * io_etherFilter() - BPF filter routine
  *
  * @eth = bpf handle
  * @io = filter direction 
  *  (IO_ETHER_FILTER_PROMISC|IO_ETHER_FILTER_NOTREAD|IO_ETHER_FILTER_READ|IO_ETHER_FILTER_WRITE)
  * @insn = BPF filter instruction array
  * @insnlen = Length of BPF filter instruction array
  * return: -1 error or 0 ok
  */
 int io_etherFilter(int eth, int io, struct bpf_insn * __restrict insn, size_t insnlen);
 
 /*
  * io_etherSend() - Send packet to bpf
  *
  * @eth = bpf handle
  * @buf = buffer
  * @buflen = buffer length
  * return: -1 error or !=-1 written bytes
  */
 ssize_t io_etherSend(int eth, const void *buf, size_t buflen);
 /*
  * io_etherRecv() - Receive packet from bpf
  *
  * @eth = bpf handle
  * @buf = buffer
  * @buflen = buffer length
  * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
  * return: -1 error or !=-1 readed bytes
  */
 ssize_t io_etherRecv(int eth, void * __restrict buf, 
                 size_t buflen, void * __restrict zcbuf);
   
   
 #endif  #endif
Removed from v.1.2  
changed lines
  Added in v.1.38

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