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BIND(2) 			    Linux Programmer's Manual				  BIND(2)

       bind - bind a name to a socket

       #include <sys/types.h>
       #include <sys/socket.h>

       int bind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);

       bind  gives  the  socket sockfd the local address my_addr.  my_addr is addrlen bytes long.
       Traditionally, this is called "assigning a name to a socket."  When a  socket  is  created
       with socket(2), it exists in a name space (address family) but has no name assigned.

       It  is normally necessary to assign a local address using bind before a SOCK_STREAM socket
       may receive connections (see accept(2)).

       The rules used in name binding vary between address families.  Consult the manual  entries
       in Section 7 for detailed information. For AF_INET see ip(7), for AF_UNIX see unix(7), for
       AF_APPLETALK see ddp(7), for AF_PACKET see  packet(7),  for  AF_X25  see  x25(7)  and  for
       AF_NETLINK see netlink(7).

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

       EBADF  sockfd is not a valid descriptor.

       EINVAL The  socket  is  already	bound  to an address.  This may change in the future: see
	      linux/unix/sock.c for details.

       EACCES The address is protected, and the user is not the super-user.

	      Argument is a descriptor for a file, not a socket.

       The following errors are specific to UNIX domain (AF_UNIX) sockets:

       EINVAL The addrlen is wrong, or the socket was not in the AF_UNIX family.

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

       EFAULT my_addr points outside the user's accessible address space.

	      my_addr is too long.

       ENOENT The file does not exist.

       ENOMEM Insufficient kernel memory was available.

	      A component of the path prefix is not a directory.

       EACCES Search permission is denied on a component of the path prefix.

       ELOOP  Too many symbolic links were encountered in resolving my_addr.

       The transparent proxy options are not described.

       SVr4, 4.4BSD (the bind function first appeared in BSD  4.2).   SVr4  documents  additional
       EADDRNOTAVAIL, EADDRINUSE, and ENOSR general error conditions, and additional EIO and EIS-
       DIR Unix-domain error conditions.

       The third argument of bind is in reality an int (and this is what BSD 4.*  and  libc4  and
       libc5 have).  Some POSIX confusion resulted in the present socklen_t. See also accept(2).

       accept(2), connect(2), listen(2), socket(2), getsockname(2), ip(7), socket(7)

Linux 2.2				    1998-10-03					  BIND(2)
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