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BIND(2)			    BSD	System Calls Manual		       BIND(2)

NAME
     bind -- assign a local protocol address to	a socket.

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

     int
     bind(int s, const struct sockaddr *addr, socklen_t	addrlen);

DESCRIPTION
     Bind() assigns the	local protocol address to a socket.  When a socket is
     created with socket(2) it exists in an address family space but has no
     protocol address assigned.	 Bind()	requests that addr be assigned to the
     socket.

NOTES
     Binding an	address	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
     unlink(2)).

     The rules used in address binding vary between communication domains.
     Consult the manual	entries	in section 4 for detailed information.

IMPLEMENTATION NOTES
     In	the non-threaded library bind()	is implemented as the bind syscall.

     In	the threaded library, the bind syscall is assembled to
     _thread_sys_bind()	and bind() is implemented as a function	which locks s
     for read and write, then calls _thread_sys_bind().	 Before	returning,
     bind() unlocks s.

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 errno.

ERRORS
     The bind()	call will fail if:

     [EAGAIN]	  Kernel resources to complete the request are temporarily un-
		  avilable.

     [EBADF]	  S is not a valid descriptor.

     [ENOTSOCK]	  S is not a socket.

     [EADDRNOTAVAIL]
		  The specified	address	is not available from the local	ma-
		  chine.

     [EADDRINUSE]
		  The specified	address	is already in use.

     [EACCES]	  The requested	address	is protected, and the current user has
		  inadequate permission	to access it.

     [EFAULT]	  The addr parameter is	not in a valid part of the user	ad-
		  dress	space.

     The following errors are specific to binding addresses in the UNIX	do-
     main.

     [ENOTDIR]	  A component of the path prefix is not	a directory.

     [ENAMETOOLONG]
		  A component of a pathname exceeded 255 characters, or	an en-
		  tire path name exceeded 1023 characters.

     [ENOENT]	  A prefix component of	the path name does not exist.

     [ELOOP]	  Too many symbolic links were encountered in translating the
		  pathname.

     [EIO]	  An I/O error occurred	while making the directory entry or
		  allocating the inode.

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

     [EISDIR]	  An empty pathname was	specified.

SEE ALSO
     connect(2), getsockname(2), listen(2), socket(2)

HISTORY
     The bind()	function call appeared in 4.2BSD.

4.2 Berkeley Distribution	 June 4, 1993	     4.2 Berkeley Distribution

NAME | SYNOPSIS | DESCRIPTION | NOTES | IMPLEMENTATION NOTES | RETURN VALUES | ERRORS | SEE ALSO | HISTORY

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