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
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*
*/
#ifdef VXWORKS
#include <vxWorks.h>
#endif
#include <stdarg.h>
#include "reg.h"
/* this is the general "get" function. Values are copied into a buffer
* provided by the caller, and the return value indicates success or
* failure. This function can get all types except directorys. The user
* must specify the type of data he is expecting, or 0 if he doesn't
* care. On success, the data type is returned. If the requested data
* type does not match the data found, EI_TYPE is returned.
*/
int ei_reg_getval(ei_reg *reg, const char *key, int flags, ...)
{
ei_hash *tab;
ei_reg_obj *obj=NULL;
va_list ap;
int rval;
int objtype;
if (!key || !reg) return -1; /* return EI_BADARG; */
tab = reg->tab;
if (!(obj=ei_hash_lookup(tab,key))) return -1; /* return EI_NOTFOUND; */
if (obj->attr & EI_DELET) return -1; /* return EI_NOTFOUND; */
/* if type was specified then it must match object */
objtype = ei_reg_typeof(obj);
if (flags && (flags != objtype)) return -1; /* return EI_TYPE; */
va_start(ap,flags);
switch ((rval = objtype)) {
case EI_INT: {
long *ip;
if (!(ip = va_arg(ap,long*))) rval = -1; /* EI_BADARG; */
else *ip = obj->val.i;
break;
}
case EI_FLT: {
double *fp;
if (!(fp = va_arg(ap,double*))) rval = -1; /* EI_BADARG; */
else *fp = obj->val.f;
break;
}
case EI_STR: {
char **sp;
if (!(sp = va_arg(ap,char**))) rval = -1; /* EI_BADARG; */
else *sp = obj->val.s;
break;
}
case EI_BIN: {
void **pp;
int *size;
if (!(pp = va_arg(ap,void**))) rval = -1; /* EI_BADARG; */
else *pp = obj->val.p;
if ((size=va_arg(ap,int*))) *size=obj->size;
break;
}
default:
/* can't (should never) happen */
rval = -1;
/* rval = EI_UNKNOWN; */
}
/* clean up & return */
va_end(ap);
return rval;
}
|