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
|
/* $OpenBSD: dlfcn_stubs.c,v 1.10 2005/11/28 16:54:18 deraadt Exp $ */
/*
* Copyright (c) 1998 Per Fogelstrom, Opsycon AB
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <stddef.h>
/*
* All functions here are just stubs that will be overridden
* by the real functions in ld.so when dynamic loading is
* performed at exec. The symbols here are provided as a link
* helper so we can link a program using the dl functions
* without getting any unresolved references.
*/
void *dlopen(const char *libname, int how) __attribute__((weak));
int dlclose(void *handle) __attribute__((weak));
void *dlsym(void *handle, const char *name) __attribute__((weak));
int dlctl(void *handle, int command, void *data) __attribute__((weak));
const char * dlerror(void) __attribute__((weak));
int dladdr(const void *addr, void *info) __attribute__((weak));
struct dl_phdr_info;
int dl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *), void *date) __attribute__((weak));
#include <stdio.h>
/*ARGSUSED*/
void *
dlopen(const char *libname, int how)
{
printf("Wrong dl symbols!\n");
return NULL;
}
/*ARGSUSED*/
int
dlclose(void *handle)
{
printf("Wrong dl symbols!\n");
return 0;
}
/*ARGSUSED*/
void *
dlsym(void *handle, const char *name)
{
printf("Wrong dl symbols!\n");
return NULL;
}
/*ARGSUSED*/
int
dlctl(void *handle, int command, void *data)
{
return -1;
}
/*ARGSUSED*/
const char *
dlerror(void)
{
return "Wrong dl symbols!\n";
}
/*ARGSUSED*/
int
dl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *),
void *data)
{
return -1;
}
/*ARGSUSED*/
int
dladdr(const void *addr, void *info)
{
printf("Wrong dl symbols!\n");
return -1;
}
|
