NAME

       bind - bind a name to a socket

SYNOPSIS

       #include <sys/socket.h>

       int bind(int socket, const struct sockaddr *address,
              socklen_t address_len);

DESCRIPTION

       The  bind()  function  shall  assign  a local socket address address to a socket identified by descriptor
       socket that has no local socket  address  assigned.  Sockets  created  with  the  socket()  function  are
       initially unnamed; they are identified only by their address family.

       The bind() function takes the following arguments:

       socket Specifies the file descriptor of the socket to be bound.

       address
              Points  to  a  sockaddr structure containing the address to be bound to the socket. The length and
              format of the address depend on the address family of the socket.

       address_len
              Specifies the length of the sockaddr structure pointed to by the address argument.

       The socket specified by socket may require the process to have appropriate privileges to use  the  bind()
       function.

RETURN VALUE

       Upon  successful  completion,  bind()  shall  return  0; otherwise, -1 shall be returned and errno set to
       indicate the error.

ERRORS

       The bind() function shall fail if:

       EADDRINUSE
              The specified address is already in use.

       EADDRNOTAVAIL
              The specified address is not available from the local machine.

       EAFNOSUPPORT
              The specified address is not a valid address for the address family of the specified socket.

       EBADF  The socket argument is not a valid file descriptor.

       EINVAL The socket is already bound to an address, and the protocol does not  support  binding  to  a  new
              address; or the socket has been shut down.

       ENOTSOCK
              The socket argument does not refer to a socket.

       EOPNOTSUPP
              The socket type of the specified socket does not support binding to an address.

       If the address family of the socket is AF_UNIX, then bind() shall fail if:

       EACCES A component of the path prefix denies search permission, or the requested name requires writing in
              a directory with a mode that denies write permission.

       EDESTADDRREQ or EISDIR
              The address argument is a null pointer.

       EIO    An I/O error occurred.

       ELOOP  A loop exists in symbolic links encountered during resolution of the pathname in address.

       ENAMETOOLONG
              A  component  of  a  pathname  exceeded  {NAME_MAX}  characters,  or  an  entire pathname exceeded
              {PATH_MAX} characters.

       ENOENT A component of the pathname does not name an existing file or the pathname is an empty string.

       ENOTDIR
              A component of the path prefix of the pathname in address is not a directory.

       EROFS  The name would reside on a read-only file system.

       The bind() function may fail if:

       EACCES The specified address is protected and the current user does not have permission to bind to it.

       EINVAL The address_len argument is not a valid length for the address family.

       EISCONN
              The socket is already connected.

       ELOOP  More than {SYMLOOP_MAX} symbolic links were encountered  during  resolution  of  the  pathname  in
              address.

       ENAMETOOLONG
              Pathname  resolution  of  a  symbolic  link  produced  an intermediate result whose length exceeds
              {PATH_MAX}.

       ENOBUFS
              Insufficient resources were available to complete the call.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       An application program can retrieve the assigned socket name with the getsockname() function.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       connect() , getsockname() , listen() , socket() , the Base Definitions  volume  of  IEEE Std 1003.1-2001,
       <sys/socket.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc and The Open Group. In the event of any discrepancy between this version and the  original  IEEE  and
       The  Open  Group  Standard,  the  original  IEEE and The Open Group Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                                   2003                                               BIND(P)