2431275ac4
with NetBSD and the Single Unix Specification v2. This updates some structures with other, almost equivalent types and effort is under way to get the whole more consistent. Also removes a double definition of INET6 and some other clean-ups. Reviewed by: green, bde, phk Some part obtained from: NetBSD, SUSv2 specification
148 lines
4.5 KiB
Groff
148 lines
4.5 KiB
Groff
.\" Copyright (c) 1983, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)bind.2 8.1 (Berkeley) 6/4/93
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.\" $FreeBSD$
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.\"
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.Dd June 4, 1993
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.Dt BIND 2
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.Os BSD 4.2
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.Sh NAME
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.Nm bind
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.Nd assign a local protocol address to a socket.
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.Sh SYNOPSIS
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.Fd #include <sys/types.h>
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.Fd #include <sys/socket.h>
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.Ft int
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.Fn bind "int s" "const struct sockaddr *addr" "socklen_t addrlen"
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.Sh DESCRIPTION
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.Fn Bind
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assigns the local protocol address to a socket.
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When a socket is created
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with
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.Xr socket 2
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it exists in an address family space but has no protocol address assigned.
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.Fn Bind
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requests that
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.Fa addr
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be assigned to the socket.
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.Sh NOTES
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Binding an address in the UNIX domain creates a socket in the file
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system that must be deleted by the caller when it is no longer
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needed (using
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.Xr unlink 2 ) .
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.Pp
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The rules used in address binding vary between communication domains.
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Consult the manual entries in section 4 for detailed information.
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.Sh IMPLEMENTATION NOTES
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.Pp
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In the non-threaded library
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.Fn bind
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is implemented as the
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.Va bind
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syscall.
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.Pp
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In the threaded library, the
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.Va bind
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syscall is assembled to
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.Fn _thread_sys_bind
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and
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.Fn bind
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is implemented as a function which locks
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.Va s
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for read and write, then calls
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.Fn _thread_sys_bind .
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Before returning,
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.Fn bind
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unlocks
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.Va s .
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.Sh RETURN VALUES
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If the bind is successful, a 0 value is returned.
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A return value of -1 indicates an error, which is
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further specified in the global
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.Va errno .
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.Sh ERRORS
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The
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.Fn bind
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call will fail if:
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.Bl -tag -width EADDRNOTAVA
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.It Bq Er EAGAIN
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Kernel resources to complete the request are
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temporarily unavilable.
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.It Bq Er EBADF
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.Fa S
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is not a valid descriptor.
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.It Bq Er ENOTSOCK
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.Fa S
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is not a socket.
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.It Bq Er EADDRNOTAVAIL
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The specified address is not available from the local machine.
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.It Bq Er EADDRINUSE
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The specified address is already in use.
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.It Bq Er EACCES
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The requested address is protected, and the current user
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has inadequate permission to access it.
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.It Bq Er EFAULT
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The
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.Fa addr
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parameter is not in a valid part of the user
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address space.
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.El
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.Pp
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The following errors are specific to binding addresses in the UNIX domain.
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.Bl -tag -width EADDRNOTAVA
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.It Bq Er ENOTDIR
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A component of the path prefix is not a directory.
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.It Bq Er ENAMETOOLONG
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A component of a pathname exceeded 255 characters,
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or an entire path name exceeded 1023 characters.
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.It Bq Er ENOENT
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A prefix component of the path name does not exist.
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.It Bq Er ELOOP
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Too many symbolic links were encountered in translating the pathname.
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.It Bq Er EIO
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An I/O error occurred while making the directory entry or allocating the inode.
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.It Bq Er EROFS
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The name would reside on a read-only file system.
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.It Bq Er EISDIR
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An empty pathname was specified.
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.El
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.Sh SEE ALSO
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.Xr connect 2 ,
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.Xr getsockname 2 ,
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.Xr listen 2 ,
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.Xr socket 2
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.Sh HISTORY
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The
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.Fn bind
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function call appeared in
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.Bx 4.2 .
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