/*

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#     # ##    # #        #   #          #       #     # #     #
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#     # #  #  # #          #            #####   #     # ######
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# #   # #     # # #   #           # #    #       ##   #     #     #  #
#  #  # #     # #  #  #  #####     #     #####   # #  #     #      ##
#   # # #     # #   # #           # #    #       #  # #     #      ##
#    ## #     # #    ##          #   #   #       #   ##     #     #  #
#     # ####### #     #         #     #  ######  #    #     #    #    #


          ####    #   #   ####    #####  ######  #    #   ####
         #         # #   #          #    #       ##  ##  #
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              #     #         #     #    #       #    #       #
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          ####      #     ####      #    ######  #    #   ####

   This as an attempt to emulate the 'locking' subroutine for non-Xenix
   systems. This has not been tested; however, it should work. One of
   the main differences is that Xenix can lock a file for writing;
   however, it can still be read ( LK_RLCK and LK_NBRLCK ). The only
   likely difference would be delays during a message read while
   another user is writing into the same message base.
   
   *************** ONLY FOR NON-XENIX SYSTEMS ********************
   This file should be added to the /usr/include/sys directory as locking.h
   *************** ONLY FOR NON-XENIX SYSTEMS ********************

   Please report back to me how this emulation performs.
   Sanford Zelkovitz XBBS 714-821-9671
   ...........!ihnp4!hermix!ucla-an!alphacm!{root|sandy}
   ...........!ucbvax!ucivax!mickey!alphacm!{root|sandy}
*/
#include "/usr/include/unistd.h"
#define LK_UNLCK F_ULOCK
#define LK_LOCK F_LOCK
#define LK_NBLCK F_TLOCK
#define LK_RLCK F_LOCK
#define LK_NBRLCK F_TLOCK
#define locking lockf
