NAME
       bind - bind a name to a socket



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

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



DESCRIPTION
       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.)



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 unlink(2)).

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



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



ERRORS
       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.

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

       EINVAL  The  addr_len  was 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  your  accessible address
               space.

       ENAMETOOLONG
               my_addr is too long.

       ENOENT  The file does not exist.

       ENOMEM  Insufficient kernel memory was available.

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

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

       ELOOP   my_addr contains a circular reference (i.e., via a
               symbolic link)



HISTORY
       The bind function call appeared in BSD 4.2.



SEE ALSO
       accept(2),   connect(2),  listen(2),  socket(2),  getsock-
       name(2)