usr/src/cmd/rcm_daemon/common/ttymux_rcm_impl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2001 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #ifndef _TTYMUX_RCM_IMPL_H
  28 #define _TTYMUX_RCM_IMPL_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #ifndef lint
  37 #define _(x)    gettext(x)
  38 #else
  39 #define _(x)    x
  40 #endif
  41
  42 #define UNKNOWN         1          /* flags */
  43 #define PRESENT         2          /* flags */
  44 #define REGISTERED      4          /* flags */
  45 #define CONNECTED       8          /* flags */
  46 #define DISCONNECTED    0x10       /* flags */
  47
  48 /* RCM operations */
  49 #define TTYMUX_OFFLINE  1
  50 #define TTYMUX_ONLINE   2
  51 #define TTYMUX_REMOVE   3
  52 #define TTYMUX_SUSPEND  4
  53 #define TTYMUX_RESUME   5
  54
  55 /*
  56  * Representation of a resource.
  57  * All resources are placed in a cache structured as a doubly linked list
  58  * (ie the next and prev fields).
  59  * The dependencies list identifies which resources this resource is
  60  * depending upon.
  61  */
  62 typedef struct rsrc {
  63         char            *id;
  64         dev_t           dev;
  65         int             flags;
  66         struct rsrc     *next;
  67         struct rsrc     *prev;
  68         struct link     *dependencies;
  69 } rsrc_t;
  70
  71 /*
  72  * Representation of a pair of resources participating in a
  73  * dependency relationship
  74  * The dependency is cast in terms of a resource that is using
  75  * another resource in order to provide a service.
  76  * This structure is used to represent a ttymux minor node that
  77  * has another serial device multiplexed under it. In this
  78  * case user resource would correspond to the ttymux minor node and the
  79  * the used resource would correspond to the multiplexed serial device.
  80  * The linkid field refers to the STREAM's link identifier.
  81  */
  82 typedef struct link {
  83         rsrc_t          *user;  /* the using resource */
  84         rsrc_t          *used;  /* the used resource */
  85         int             linkid; /* STREAM's link identifier */
  86         uint_t          state;
  87         int             flags;
  88         int             (*connect)(struct link *);
  89         int             (*disconnect)(struct link *);
  90         struct link     *next;
  91 } link_t;
  92
  93 #define MUXCTLLINK      "/devices/multiplexer@0,0:ctl"
  94 #define MUXCONLINK      "/devices/multiplexer@0,0:con"
  95
  96 #ifdef  __cplusplus
  97 }
  98 #endif
  99
 100 #endif /* _TTYMUX_RCM_IMPL_H */