fd_copy(3)             C Library Functions             fd_copy(3)



NAME
     fd_copy - duplicate a descriptor

SYNTAX
     #include <fd.h>

     int fd_copy(to,from);

     int to;
     int from;

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 returns 0 on success, -1 on error.  fd_copy does not
     guarantee  that to will remain open, if it was open, in case
     of error.

SEE ALSO
     dup(2), fd_move(3)