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- #if defined(SYSV)
- #ifndef _FLOCK_EMULATE_INCLUDED
- #define _FLOCK_EMULATE_INCLUDED
-
- #include <fcntl.h>
-
- #if defined(F_SETLK) && defined(F_SETLKW)
- # define FCNTL_FLOCK
- #else
- # define LOCKF_FLOCK
- #endif /* F_SETLK && F_SETLKW */
-
- /* These definitions are in <sys/file.h> on BSD 4.3 */
-
- /*
- * Flock call.
- */
- #define LOCK_SH 1 /* shared lock */
- #define LOCK_EX 2 /* exclusive lock */
- #define LOCK_NB 4 /* don't block when locking */
- #define LOCK_UN 8 /* unlock */
-
- extern int flock();
-
- #endif /* _FLOCK_EMULATE_INCLUDED */
- #endif /* SYSV */
-