dlfcn.h revision 69c5d108a5cb44167a04d42ffdad6a39648ed235 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#ifndef __DLFCN_H__
29#define __DLFCN_H__
30
31#include <sys/cdefs.h>
32
33__BEGIN_DECLS
34
35typedef struct {
36    const char *dli_fname;  /* Pathname of shared object that
37                               contains address */
38    void       *dli_fbase;  /* Address at which shared object
39                               is loaded */
40    const char *dli_sname;  /* Name of nearest symbol with address
41                               lower than addr */
42    void       *dli_saddr;  /* Exact address of symbol named
43                               in dli_sname */
44} Dl_info;
45
46extern void*        dlopen(const char*  filename, int flag);
47extern int          dlclose(void*  handle);
48extern const char*  dlerror(void);
49extern void*        dlsym(void*  handle, const char*  symbol);
50extern int          dladdr(const void* addr, Dl_info *info);
51
52enum {
53#if defined(__LP64__)
54  RTLD_NOW  = 2,
55#else
56  RTLD_NOW  = 0,
57#endif
58  RTLD_LAZY = 1,
59
60  RTLD_LOCAL  = 0,
61#if defined(__LP64__)
62  RTLD_GLOBAL = 0x00100,
63#else
64  RTLD_GLOBAL = 2,
65#endif
66  RTLD_NOLOAD = 4,
67};
68
69#if defined (__LP64__)
70#define RTLD_DEFAULT  ((void*) 0)
71#define RTLD_NEXT     ((void*) -1L)
72#else
73#define RTLD_DEFAULT  ((void*) 0xffffffff)
74#define RTLD_NEXT     ((void*) 0xfffffffe)
75#endif
76
77__END_DECLS
78
79#endif /* __DLFCN_H */
80
81
82