dyld-43.tar.gz
[apple/dyld.git] / include / dlfcn.h
1 /*
2 * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24 /*
25 Based on the dlcompat work done by:
26 Jorge Acereda <jacereda@users.sourceforge.net> &
27 Peter O'Gorman <ogorman@users.sourceforge.net>
28 */
29
30 #ifndef _DLFCN_H_
31 #define _DLFCN_H_
32
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36
37 #include <sys/cdefs.h>
38
39 #ifndef _POSIX_C_SOURCE
40 /*
41 * Structure filled in by dladdr().
42 */
43 typedef struct dl_info {
44 const char *dli_fname; /* Pathname of shared object */
45 void *dli_fbase; /* Base address of shared object */
46 const char *dli_sname; /* Name of nearest symbol */
47 void *dli_saddr; /* Address of nearest symbol */
48 } Dl_info;
49
50 extern int dladdr(const void *, Dl_info *);
51 #endif /* not POSIX */
52
53 extern int dlclose(void * __handle);
54 extern char * dlerror(void);
55 extern void * dlopen(const char * __path, int __mode);
56 extern void * dlsym(void * __handle, const char * __symbol);
57
58 #define RTLD_LAZY 0x1
59 #define RTLD_NOW 0x2
60 #define RTLD_LOCAL 0x4
61 #define RTLD_GLOBAL 0x8
62
63 #ifndef _POSIX_C_SOURCE
64 #define RTLD_NOLOAD 0x10
65 #define RTLD_NODELETE 0x80
66
67 /*
68 * Special handle arguments for dlsym().
69 */
70 #define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
71 #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
72 #endif /* not POSIX */
73
74 #ifdef __cplusplus
75 }
76 #endif
77
78 #endif /* _DLFCN_H_ */