X-Git-Url: https://git.distorted.org.uk/~mdw/fwd/blobdiff_plain/5d9fd22aa85423521ff7c4c004f6e6299d99aad0..47a7631fc173b345182df04f67523d3b2fe4ba83:/endpt.h

diff --git a/endpt.h b/endpt.h
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-/* -*-c-*-
- *
- * Generic endpoint abstraction
- *
- * (c) 1999 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of the `fw' port forwarder.
- *
- * `fw' is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * `fw' is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with `fw'; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifndef ENDPT_H
-#define ENDPT_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#ifndef REFFD_H
-#  include "reffd.h"
-#endif
-
-/*----- Data structures ---------------------------------------------------*/
-
-/* --- Basic endpoint structure --- */
-
-typedef struct endpt {
-  struct endpt_ops *ops;		/* Pointer to operations table */
-  struct endpt *other;			/* Pointer to sibling endpoint */
-  unsigned f;				/* Various flags */
-  struct tango *t;			/* Private data structure */
-  reffd *in, *out;			/* File descriptors */
-} endpt;
-
-/* --- Endpoint flags --- */
-
-#define EPF_PENDING 1u			/* Endpoint creation in progress */
-#define EPF_FILE 2u			/* Endpoint smells like a file */
-
-/* --- Endpoint operations table --- */
-
-typedef struct endpt_ops {
-
-  /* --- @attach@ --- *
-   *
-   * Arguments:	@endpt *e@ = pointer to endpoint to be attached
-   *		@reffd *in, *out@ = input and output file descriptors
-   *
-   * Returns:	---
-   *
-   * Use:	Instructs a non-file endpoint to attach itself to a pair of
-   *		files.
-   */
-
-  void (*attach)(endpt */*e*/, reffd */*in*/, reffd */*out*/);
-
-  /* --- @file@ --- *
-   *
-   * Arguments:	@endpt *e@ = pointer to endpoint in question
-   *		@endpt *f@ = pointer to a file endpoint
-   *
-   * Returns:	---
-   *
-   * Use:	Informs a non-file endpoint of a file endpoint which will
-   *		want to be closed when it's finished with.  At that time, the
-   *		endpoint should arrange to have both itself and its partner
-   *		closed.  If no file is registered, the endpoint manager will
-   *		close both endpoints itself.
-   */
-
-  void (*file)(endpt */*e*/, endpt */*f*/);
-
-  /* --- @wclose@ --- *
-   *
-   * Arguments:	@endpt *e@ = endpoint to be partially closed
-   *
-   * Returns:	---
-   *
-   * Use:	Announces that the endpoint will not be written to any more.
-   */
-
-  void (*wclose)(endpt */*e*/);
-
-  /* --- @close@ --- *
-   *
-   * Arguments:	@endpt *e@ = endpoint to be closed
-   *
-   * Returns:	---
-   *
-   * Use:	Completely closes an endpoint.  The endpoint's data may be
-   *		freed, although some endpoints may wish to delay freeing for
-   *		some reason.
-   */
-
-  void (*close)(endpt */*e*/);
-
-} endpt_ops;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @endpt_kill@ --- *
- *
- * Arguments:	@endpt *a@ = an endpoint
- *
- * Returns:	---
- *
- * Use:		Kills an endpoint.  If the endpoint is joined to another, the
- *		other endpoint is also killed, as is the connection between
- *		them (and that's the tricky bit).
- */
-
-extern void endpt_kill(endpt */*a*/);
-
-/* --- @endpt_killall@ --- *
- *
- * Arguments:	---
- *
- * Returns:	---
- *
- * Use:		Destroys all current endpoint connections.  Used when
- *		shutting down.
- */
-
-extern void endpt_killall(void);
-
-/* --- @endpt_join@ --- *
- *
- * Arguments:	@endpt *a@ = pointer to first endpoint
- *		@endpt *b@ = pointer to second endpoint
- *
- * Returns:	---
- *
- * Use:		Joins two endpoints together.
- */
-
-extern void endpt_join(endpt */*a*/, endpt */*b*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif