1 /* $Id: rsisamc.c,v 1.17 2004-08-06 12:55:03 adam Exp $
2 Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
32 static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
33 static RSFD r_open (RSET ct, int flag);
34 static void r_close (RSFD rfd);
35 static void r_delete (RSET ct);
36 static void r_rewind (RSFD rfd);
37 static int r_read (RSFD rfd, void *buf, int *term_index);
38 static int r_write (RSFD rfd, const void *buf);
40 static const struct rset_control control =
54 const struct rset_control *rset_kind_isamc = &control;
58 struct rset_pp_info *next;
59 struct rset_isamc_info *info;
64 struct rset_isamc_info {
68 int (*cmp)(const void *p1, const void *p2);
69 struct rset_pp_info *ispt_list;
72 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
74 rset_isamc_parms *pt = (rset_isamc_parms *) parms;
75 struct rset_isamc_info *info;
77 ct->flags |= RSET_FLAG_VOLATILE;
78 info = (struct rset_isamc_info *) xmalloc (sizeof(*info));
81 info->key_size = pt->key_size;
83 info->ispt_list = NULL;
84 ct->no_rset_terms = 1;
85 ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms));
86 ct->rset_terms[0] = pt->rset_term;
90 RSFD r_open (RSET ct, int flag)
92 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
93 struct rset_pp_info *ptinfo;
95 logf (LOG_DEBUG, "risamc_open");
96 if (flag & RSETF_WRITE)
98 logf (LOG_FATAL, "ISAMC set type is read-only");
101 ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
102 ptinfo->next = info->ispt_list;
103 info->ispt_list = ptinfo;
104 ptinfo->pt = isc_pp_open (info->is, info->pos);
106 if (ct->rset_terms[0]->nn < 0)
107 ct->rset_terms[0]->nn = isc_pp_num (ptinfo->pt);
108 ct->rset_terms[0]->count = 0;
109 ptinfo->countp = &ct->rset_terms[0]->count;
110 ptinfo->buf = xmalloc (info->key_size);
114 static void r_close (RSFD rfd)
116 struct rset_isamc_info *info = ((struct rset_pp_info*) rfd)->info;
117 struct rset_pp_info **ptinfop;
119 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
122 xfree ((*ptinfop)->buf);
123 isc_pp_close ((*ptinfop)->pt);
124 *ptinfop = (*ptinfop)->next;
128 logf (LOG_FATAL, "r_close but no rfd match!");
132 static void r_delete (RSET ct)
134 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
136 logf (LOG_DEBUG, "rsisamc_delete");
137 assert (info->ispt_list == NULL);
138 rset_term_destroy (ct->rset_terms[0]);
139 xfree (ct->rset_terms);
143 static void r_rewind (RSFD rfd)
145 logf (LOG_DEBUG, "rsisamc_rewind");
149 static int r_read (RSFD rfd, void *buf, int *term_index)
151 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
154 r = isc_pp_read(pinfo->pt, buf);
157 if (*pinfo->countp == 0 || (*pinfo->info->cmp)(buf, pinfo->buf) > 1)
159 memcpy (pinfo->buf, buf, pinfo->info->key_size);
166 static int r_write (RSFD rfd, const void *buf)
168 logf (LOG_FATAL, "ISAMC set type is read-only");