1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
/*
* SCCS: @(#)sdtalk.c 1.12 (98/09/01)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1992 X/Open Company Limited
* (C) Copyright 1994 UniSoft Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/************************************************************************
SCCS: @(#)sdtalk.c 1.12 98/09/01 TETware release 3.3
NAME: sdtalk.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: April 1992
DESCRIPTION:
syncd communication functions
MODIFICATIONS:
Denis McConalogue, UniSoft Limited, September 1993
added sd_discon() and tet_sdislogon() functions
Andrew Dingwall, UniSoft Ltd., November 1993
enhancements for FIFO transport interface
removed disconnect stuff
Andrew Dingwall, UniSoft Ltd., October 1994
added support for tet_msync()
Geoff Clare, UniSoft Ltd., Sept 1996
Make calls to tet_ti_talk(), etc. signal safe.
Andrew Dingwall, UniSoft Ltd., July 1998
Added support for shared API libraries.
************************************************************************/
#include <stdio.h>
#include <sys/types.h>
#include <signal.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "error.h"
#include "valmsg.h"
#include "servlib.h"
#include "dtetlib.h"
#include "sigsafe.h"
#ifndef NOTRACE
#include "ltoa.h"
#endif
#if TESTING
#include "avmsg.h"
#endif
TET_IMPORT int tet_sderrno; /* tet_sdtalk reply code */
/* static function declarations */
static int sd_ptcheck PROTOLIST((void));
/*
** tet_sdlogon() - log on to syncd
**
** return 0 if successful or -1 on error
*/
TET_IMPORT int tet_sdlogon()
{
register int rc;
TET_SIGSAFE_DEF
if (!tet_sdptab) {
error(0, "don't know how to connect to syncd", (char *) 0);
return(-1);
}
TET_SIGSAFE_START;
rc = tet_ti_logon(tet_sdptab);
TET_SIGSAFE_END;
return(rc);
}
/*
** tet_sdlogoff() - log off from the syncd
**
** if stayopen is non-zero, the connection to syncd is left open;
** otherwise it is closed
**
** return 0 if successful or -1 on error
*/
int tet_sdlogoff(stayopen)
int stayopen;
{
register int rc;
TET_SIGSAFE_DEF
if (!tet_sdptab || (tet_sdptab->pt_flags & PF_LOGGEDON) == 0)
return(0);
TET_SIGSAFE_START;
rc = tet_ti_logoff(tet_sdptab, stayopen);
TET_SIGSAFE_END;
return(rc);
}
/* this function not used anywhere */
#if 0
/*
** tet_sdislogon() - check that there is an syncd ptab and that we are
** logged on
**
** return 1 if logged on, 0 otherwise
*/
int tet_sdislogon()
{
if (!tet_sdptab)
return(0);
if ((tet_sdptab->pt_flags & PF_LOGGEDON) == 0)
return(0);
return(1);
}
#endif
/*
** tet_sdmsgbuf() - return pointer to syncd message data buffer at least
** len bytes long, growing it if necessary
**
** return (char *) 0 on error
*/
char *tet_sdmsgbuf(len)
int len;
{
return(sd_ptcheck() < 0 ? (char *) 0 : tet_ti_msgbuf(tet_sdptab, len));
}
/*
** tet_sdtalk() - talk to syncd, return a pointer to the reply message
** data with the reply code in tet_sderrno
**
** return (char *) 0 on error
*/
char *tet_sdtalk(req, delay)
register int req;
int delay;
{
register int mtype, len, rc;
TET_SIGSAFE_DEF
TRACE3(tet_Tsyncd, 1, "sdtalk: request = %s, delay = %s",
tet_ptreqcode(req), tet_i2a(delay));
if (sd_ptcheck() < 0) {
tet_sderrno = ER_LOGON;
return((char *) 0);
}
/* determine the size of the message data */
switch (req) {
case OP_SNSYS:
case OP_SNRM:
mtype = MT_VALMSG;
len = valmsgsz(((struct valmsg *) tet_sdptab->ptm_data)->vm_nvalue);
break;
case OP_ASYNC:
case OP_USYNC:
mtype = MT_SYNMSG;
len = synmsgsz(((struct valmsg *) tet_sdptab->ptm_data)->vm_nvalue, VM_MSDLEN((struct valmsg *) tet_sdptab->ptm_data));
break;
case OP_SNGET:
case OP_NULL:
mtype = MT_NODATA;
len = 0;
break;
#if TESTING
case OP_PRINT:
mtype = MT_AVMSG;
len = avmsgsz(((struct avmsg *) tet_sdptab->ptm_data)->av_argc);
break;
#endif
default:
error(0, "unknown SYNCD request:", tet_ptreqcode(req));
tet_sderrno = ER_REQ;
return((char *) 0);
}
/* send the message and receive a reply */
tet_sdptab->ptm_req = req;
tet_sdptab->ptm_mtype = mtype;
tet_sdptab->ptm_len = len;
TET_SIGSAFE_START;
rc = tet_ti_talk(tet_sdptab, delay);
TET_SIGSAFE_END;
if (rc < 0) {
tet_sderrno = ER_ERR;
return((char *) 0);
}
/* return the reply code and message data */
TRACE2(tet_Tsyncd, 1, "sdtalk: reply code = %s",
tet_ptrepcode(tet_sdptab->ptm_rc));
tet_sderrno = tet_sdptab->ptm_rc;
return(tet_sdptab->ptm_data);
}
/*
** sd_ptcheck() - check that there is a syncd ptab and that we are
** logged on
**
** return 0 if successful or -1 on error
*/
static int sd_ptcheck()
{
if (!tet_sdptab) {
error(0, "syncd ptab not initialised", (char *) 0);
return(-1);
}
if ((tet_sdptab->pt_flags & PF_LOGGEDON) == 0) {
error(0, "not logged on to syncd", (char *) 0);
return(-1);
}
return(0);
}
|
