1/*	$NetBSD: dldb.c,v 1.1.1.2 2008/05/18 14:29:41 aymeric Exp $ */
2
3#include "config.h"
4
5#include <dlfcn.h>
6
7#include "common.h"
8#include "pathnames.h"
9
10static void relocate __P(());
11
12#define RELOC(func,returntype,args,proto,types) \
13    static returntype reloc_##func __P(proto); \
14    returntype (*nvi_##func) __P(proto) = reloc_##func; \
15    static returntype reloc_##func args \
16	    types \
17    { \
18	    relocate(); \
19	    return nvi_##func args; \
20    }
21
22RELOC(db_create,int,(a,b,c),(DB **, DB_ENV *, u_int32_t),
23    DB**a;DB_ENV*b;u_int32_t c;)
24RELOC(db_env_create,int,(a,b),(DB_ENV **, u_int32_t),DB_ENV ** a;u_int32_t b;);
25RELOC(db_strerror,char *,(a),(int),int a;)
26
27#define LOADSYM(func) \
28    if ((nvi_##func = dlsym(handle, #func)) == NULL) \
29	    goto error;
30
31static void
32relocate()
33{
34	void *handle = dlopen(_PATH_DB3, RTLD_LAZY);
35
36	if (!handle)
37	    goto error;
38
39	LOADSYM(db_create)
40	LOADSYM(db_env_create)
41	LOADSYM(db_strerror)
42
43	return;
44error:
45	fprintf(stderr, "Relocation error: %s\n", dlerror());
46	abort();
47}
48