BIND(2)                              BSD                               BIND(2)



NAME
     bind - bind a name to a socket

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

     bind(s, name, namelen)
     int s;
     struct sockaddr *name;
     int namelen;

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

ERRORS
     The bind call will fail if any of the following are true:

     [EBADF]          s is not a valid descriptor.

     [ENOTSOCK]       s is not a socket.

     [EADDRNOTAVAIL]  The specified address is not available from the local
                      machine.

     [EADDRINUSE]     The specified address is already in use.

     [EINVAL]         The socket is already bound to an address.

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

     [EFAULT]         The name parameter is not in a valid part of the user
                      address space.

     The following errors are specific to binding names in the UNIX domain.

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

     [ENAMETOOLONG]   A component of a pathname exceeded 255 characters, or an
                      entire pathname exceeded 1023 characters.

     [ENOENT]         A prefix component of the pathname 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]         A null pathname was specified.

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

DIAGNOSTICS
     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.

NOTES
     Some implementations return the error [EINVAL] if name contains a
     character with the high-order bit set.

     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
     unlink(2)).

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