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bind(2)								       bind(2)

       bind() - bind an address to a socket

   AF_CCITT only
   AF_UNIX only
   UNIX 03 only (X/Open Sockets)
   Obsolescent UNIX 95 only (X/Open Sockets)
       The system call assigns an address to an unbound socket.	 When a socket
       is created with it exists in an address space (address family) but  has
       no address assigned.  causes the socket whose descriptor is s to become
       bound to the address specified in the socket address structure  pointed
       to by addr.

       addrlen must specify the size of the address structure.	Since the size
       of the socket address structure varies between socket address families,
       the  correct  socket address structure should be used with each address
       family (for example, for AF_INET and AF_VME_LINK, for AF_INET6, and for
       AF_UNIX).   Typically,  the  function is used to pass this value in the
       call (for example,

       The rules used in address binding vary between  communication  domains.
       For  example, when binding an AF_UNIX socket to a path name (such as an
       open file having that name is created in the  file  system.   When  the
       bound  socket is closed, that file still exists unless it is removed or
       unlinked.  When binding	an  AF_INET  socket  or	 an  AF_INET6  socket,
       sin_port	 can be a port number or it can be zero.  If sin_port is zero,
       the system assigns an unused port number automatically.

       The system call is used only by servers and not clients.

   X/Open Sockets Compilation Environment
       See xopen_networking(7).

       returns the following values:

	      Successful completion.
		     is set to indicate the error.

       If fails, is set to one of the following values.

       The requested address is protected, and the current user
			   has inadequate  permission  to  access  it.	 (This
			   error can be returned by AF_INET or AF_INET6 only.)

       The specified address is already in use.

       The specified address is invalid or not available from the local
			   machine,  or	 for  AF_CCITT sockets which use "wild
			   card" addressing, the specified address space over‐
			   lays the address space of an existing bind.

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

       s		   is not a valid file descriptor.

       No		   addr parameter was specified.

       addr		   is not a valid pointer.

       The socket is already bound to an address,
			   the	socket	has  been  shut down, addrlen is a bad
			   value, or an attempt was made to an AF_UNIX	socket
			   to an NFS-mounted (remote) name.

			   AF_CCITT:  The  protocol-ID	length	is negative or
			   greater than 8, the X.121 address  string  contains
			   an  illegal	character, or the X.121 address string
			   is greater than 15 digits long.

			   AF_VME_LINK: An explicit bind can be made only to a
			   well-known port.

       The		   x25ifname  field  name  specifies an interface that
			   was shut down, or never initialized, or whose Level
			   2  protocol indicates that the link is not working:
			   Wires might be broken, the interface hoods  on  the
			   modem  are broken, the modem failed, the phone con‐
			   nection failed  (this  error	 can  be  returned  by
			   AF_CCITT  only), noise interfered with the line for
			   a long period of time.

       The X.25 Level 2 protocol is down.
			   The X.25 link is not working: Wires might  be  bro‐
			   ken,	 or  connections  are  loose  on the interface
			   hoods at the modem,	the  modem  failed,  or	 noise
			   interfered  with  the  line	for  an extremely long
			   period of time.

       No buffer space is available.
			   The cannot complete.

       No memory is available.
			   The cannot complete.

       The		   x25ifname field name specifies a nonexistent inter‐
			   face.   (This  error	 can  be  returned by AF_CCITT

       s		   is a valid file descriptor, but it is not a socket.

       The socket referenced by
			   s does not support address binding.

       The connection is already bound.

       Currently, the and types are the same size.  This  is  compatible  with
       the  UNIX 95 and UNIX 03 profiles.  However, in a future release, might
       be a different size, but that should not adversely  affect  application
       behavior	 in  this  case.   Applications may use now.  But applications
       that need to be portable to the	UNIX  95  profile  should  follow  the
       X/Open specification (see xopen_networking(7)).

       Linking	binary	objects	 compiled  to specification and binary objects
       compiled to specification to the same executable may  result  in	 unex‐
       pected  behavior,  including application abnormal termination and unex‐
       pected socket errors.  See xopen_networking(7) for details and remedy.

       Currently, the default behavior is the however, it might be changed  to
       in  a  future release.  At that time, any behavior that is incompatible
       with might be obsoleted.	 Applications that conform to the X/Open spec‐
       ification now will avoid migration problems (see xopen_networking(7)).

       was developed by HP and the University of California, Berkeley.

       connect(2),   getsockname(2),   listen(2),   socket(2),	privileges(5),
       thread_safety(5),  inet(7F),  IPv6(7P),	sctp(7),   TCP(7P),   UDP(7P),
       UNIX(7P), xopen_networking(7).


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