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-rw-r--r--secure/usr.bin/telnet/ring.h105
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diff --git a/secure/usr.bin/telnet/ring.h b/secure/usr.bin/telnet/ring.h
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--- a/secure/usr.bin/telnet/ring.h
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-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ring.h 8.1 (Berkeley) 6/6/93
- */
-
-#if defined(P)
-# undef P
-#endif
-
-#if defined(__STDC__) || defined(LINT_ARGS)
-# define P(x) x
-#else
-# define P(x) ()
-#endif
-
-/*
- * This defines a structure for a ring buffer.
- *
- * The circular buffer has two parts:
- *(((
- * full: [consume, supply)
- * empty: [supply, consume)
- *]]]
- *
- */
-typedef struct {
- unsigned char *consume, /* where data comes out of */
- *supply, /* where data comes in to */
- *bottom, /* lowest address in buffer */
- *top, /* highest address+1 in buffer */
- *mark; /* marker (user defined) */
-#ifdef ENCRYPTION
- unsigned char *clearto; /* Data to this point is clear text */
- unsigned char *encryyptedto; /* Data is encrypted to here */
-#endif /* ENCRYPTION */
- int size; /* size in bytes of buffer */
- u_long consumetime, /* help us keep straight full, empty, etc. */
- supplytime;
-} Ring;
-
-/* Here are some functions and macros to deal with the ring buffer */
-
-/* Initialization routine */
-extern int
- ring_init P((Ring *ring, unsigned char *buffer, int count));
-
-/* Data movement routines */
-extern void
- ring_supply_data P((Ring *ring, unsigned char *buffer, int count));
-#ifdef notdef
-extern void
- ring_consume_data P((Ring *ring, unsigned char *buffer, int count));
-#endif
-
-/* Buffer state transition routines */
-extern void
- ring_supplied P((Ring *ring, int count)),
- ring_consumed P((Ring *ring, int count));
-
-/* Buffer state query routines */
-extern int
- ring_empty_count P((Ring *ring)),
- ring_empty_consecutive P((Ring *ring)),
- ring_full_count P((Ring *ring)),
- ring_full_consecutive P((Ring *ring));
-
-#ifdef ENCRYPTION
-extern void
- ring_encrypt P((Ring *ring, void (*func)())),
- ring_clearto P((Ring *ring));
-#endif /* ENCRYPTION */
-
-extern void
- ring_clear_mark(),
- ring_mark();
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