Imported Upstream version 3.1.0
[debian/amanda] / ndmp-src / ndma_data_fh.c
1 /*
2  * Copyright (c) 1998,1999,2000
3  *      Traakan, Inc., Los Altos, CA
4  *      All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice unmodified, this list of conditions, and the following
11  *    disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28
29 /*
30  * Project:  NDMJOB
31  * Ident:    $Id: $
32  *
33  * Description:
34  *
35  */
36
37
38 #include "ndmagents.h"
39
40 #ifndef NDMOS_OPTION_NO_DATA_AGENT
41
42
43 /*
44  * Initialization and Cleanup
45  ****************************************************************
46  */
47
48 /* Initialize -- Set data structure to know value, ignore current value */
49 int
50 ndmda_fh_initialize (struct ndm_session *sess)
51 {
52         struct ndm_data_agent * da = &sess->data_acb;
53         struct ndmfhheap *      fhh = &da->fhh;
54
55         ndmfhh_initialize (fhh);
56
57         return 0;
58 }
59
60 /* Commission -- Get agent ready. Entire session has been initialize()d */
61 int
62 ndmda_fh_commission (struct ndm_session *sess)
63 {
64         struct ndm_data_agent * da = &sess->data_acb;
65         struct ndmfhheap *      fhh = &da->fhh;
66
67         ndmfhh_commission (fhh, &da->fhh_buf, sizeof da->fhh_buf);
68
69         return 0;
70 }
71
72 /* Decommission -- Discard agent */
73 int
74 ndmda_fh_decommission (struct ndm_session *sess)
75 {
76         return 0;
77 }
78
79 /* Belay -- Cancel partially issued activation/start */
80 int
81 ndmda_fh_belay (struct ndm_session *sess)
82 {
83         return 0;
84 }
85
86
87
88
89 /*
90  * Semantic actions -- called from ndmda_XXX() butype formatters
91  ****************************************************************
92  */
93
94 void
95 ndmda_fh_add_file (struct ndm_session *sess,
96   ndmp9_file_stat *filestat, char *name)
97 {
98         struct ndm_data_agent * da = &sess->data_acb;
99         int                     nlen = strlen (name) + 1;
100         ndmp9_file *            file9;
101         int                     rc;
102
103         rc = ndmda_fh_prepare (sess, NDMP9VER, NDMP9_FH_ADD_FILE,
104                         sizeof (ndmp9_file), 1, nlen);
105
106         if (rc != NDMFHH_RET_OK)
107                 return;
108
109         file9 = ndmfhh_add_entry (&da->fhh);
110         file9->fstat = *filestat;
111         file9->unix_path = ndmfhh_save_item (&da->fhh, name, nlen);
112 }
113
114 void
115 ndmda_fh_add_dir (struct ndm_session *sess,
116   unsigned long long dir_fileno, char *name, unsigned long long fileno)
117 {
118         struct ndm_data_agent * da = &sess->data_acb;
119         int                     nlen = strlen (name) + 1;
120         ndmp9_dir *             dir9;
121         int                     rc;
122
123         rc = ndmda_fh_prepare (sess, NDMP9VER, NDMP9_FH_ADD_DIR,
124                         sizeof (ndmp9_dir), 1, nlen);
125
126         if (rc != NDMFHH_RET_OK)
127                 return;
128
129         dir9 = ndmfhh_add_entry (&da->fhh);
130         dir9->unix_name = ndmfhh_save_item (&da->fhh, name, nlen);
131         dir9->parent = dir_fileno;
132         dir9->node = fileno;
133 }
134
135 void
136 ndmda_fh_add_node (struct ndm_session *sess, ndmp9_file_stat *filestat)
137 {
138         struct ndm_data_agent * da = &sess->data_acb;
139         ndmp9_node *            node9;
140         int                     rc;
141
142         rc = ndmda_fh_prepare (sess, NDMP9VER, NDMP9_FH_ADD_NODE,
143                         sizeof (ndmp9_node), 1, 0);
144
145         if (rc != NDMFHH_RET_OK)
146                 return;
147
148         node9 = ndmfhh_add_entry (&da->fhh);
149         node9->fstat = *filestat;
150 }
151
152
153
154
155 /*
156  * Helpers -- prepare/flush
157  ****************************************************************
158  */
159
160 int
161 ndmda_fh_prepare (struct ndm_session *sess,
162   int vers, int msg, int entry_size,
163   unsigned n_item, unsigned total_size_of_items)
164 {
165         struct ndm_data_agent * da = &sess->data_acb;
166         struct ndmfhheap *      fhh = &da->fhh;
167         int                     fhtype = (vers<<16) + msg;
168         int                     rc;
169
170         rc = ndmfhh_prepare (fhh, fhtype, entry_size,
171                                 n_item, total_size_of_items);
172
173         if (rc == NDMFHH_RET_OK)
174                 return NDMFHH_RET_OK;
175
176         ndmda_fh_flush (sess);
177
178         rc = ndmfhh_prepare (fhh, fhtype, entry_size,
179                                 n_item, total_size_of_items);
180
181         return rc;
182 }
183
184 void
185 ndmda_fh_flush (struct ndm_session *sess)
186 {
187         struct ndm_data_agent * da = &sess->data_acb;
188         struct ndmfhheap *      fhh = &da->fhh;
189         int                     rc;
190         int                     fhtype;
191         void *                  table;
192         unsigned                n_entry;
193
194         rc = ndmfhh_get_table (fhh, &fhtype, &table, &n_entry);
195         if (rc == NDMFHH_RET_OK && n_entry > 0) {
196                 struct ndmp_xa_buf      xa;
197                 struct ndmfhh_generic_table *request;
198
199                 request = (void *) &xa.request.body;
200                 NDMOS_MACRO_ZEROFILL (&xa);
201
202                 xa.request.protocol_version = fhtype >> 16;
203                 xa.request.header.message = fhtype & 0xFFFF;
204
205                 request->table_len = n_entry;
206                 request->table_val = table;
207
208                 ndma_send_to_control (sess, &xa, sess->plumb.data);
209         }
210
211         ndmfhh_reset (fhh);
212 }
213
214 #endif /* !NDMOS_OPTION_NO_DATA_AGENT */