SYNTAX

       #include "fd.h"

       int fd_copy(int to,int from);
       int fd_move(int to,int from);
       int fd_coe(int fd);

DESCRIPTION

       fd_copy copies descriptor from to descriptor to.  If to was already
       open, fd_copy closes it.  fd_copy always leaves from intact; if to and
       from are the same number, fd_copy does nothing.  fd_copy does not
       guarantee that to will remain open, if it was open, in case of error.

       fd_move moves descriptor from to descriptor to.  If to was already
       open, fd_move closes it.  If the move is successful, fd_move closes
       from.  Exception: if to and from are the same number, fd_move does
       nothing.

       fd_coe closes fd.

RETURN CODES

       fd_copy, fd_move, and fd_coe return 0 on success, and -1 on error.

SEE ALSO

       dup(2), fcntl(2)



                                       3                            qlibs:(fd)