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+.\" Copyright (c) 1983, 1993
+.\"	The Regents of the University of California.  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 the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University 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 THE REGENTS 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.
+.\"
+.\"     @(#)bind.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BIND 2
+.Os BSD 4.2
+.Sh NAME
+.Nm bind
+.Nd bind a name to a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn bind "int s" "struct sockaddr *name" "int namelen"
+.Sh DESCRIPTION
+.Fn Bind
+assigns a name to an unnamed socket.
+When a socket is created 
+with
+.Xr socket 2
+it exists in a name space (address family)
+but has no name assigned.
+.Fn Bind
+requests that
+.Fa name
+be assigned to the socket.
+.Sh NOTES
+Binding a name in the UNIX domain creates a socket in the file
+system that must be deleted by the caller when it is no longer
+needed (using
+.Xr unlink 2 ) .
+.Pp
+The rules used in name binding vary between communication domains.
+Consult the manual entries in section 4 for detailed information.
+.Sh RETURN VALUES
+If the bind is successful, a 0 value is returned.
+A return value of -1 indicates an error, which is
+further specified in the global
+.Va errno .
+.Sh ERRORS
+The
+.Fn bind
+call will fail if:
+.Bl -tag -width EADDRNOTAVA
+.It Bq Er EBADF
+.Fa S
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+.Fa S
+is not a socket.
+.It Bq Er EADDRNOTAVAIL
+The specified address is not available from the local machine.
+.It Bq Er EADDRINUSE
+The specified address is already in use.
+.It Bq Er EINVAL
+The socket is already bound to an address.
+.It Bq Er EACCES
+The requested address is protected, and the current user
+has inadequate permission to access it.
+.It Bq Er EFAULT
+The
+.Fa name
+parameter is not in a valid part of the user
+address space.
+.El
+.Pp
+The following errors are specific to binding names in the UNIX domain.
+.Bl -tag -width EADDRNOTAVA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A prefix component of the path name does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EROFS
+The name would reside on a read-only file system.
+.It Bq Er EISDIR
+An empty pathname was specified.
+.El
+.Sh SEE ALSO
+.Xr connect 2 ,
+.Xr listen 2 ,
+.Xr socket 2 ,
+.Xr getsockname 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .