Add PCICAP_{ID,NEXTPTR} to avoid using magic number
[dragonfly.git] / include / dlfcn.h
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1/*
2 * Copyright (c) 1994
3 * The Regents of the University of California. 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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD: src/include/dlfcn.h,v 1.10.2.3 2003/02/20 20:42:45 kan Exp $
5baeefc7 34 * $DragonFly: src/include/dlfcn.h,v 1.5 2004/02/26 13:58:25 joerg Exp $
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35 */
36
37#ifndef _DLFCN_H_
38#define _DLFCN_H_
39
40#include <sys/cdefs.h>
e2565a42 41#include <machine/stdint.h> /* size_t */
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42
43/*
44 * Modes and flags for dlopen().
45 */
46#define RTLD_LAZY 1 /* Bind function calls lazily */
47#define RTLD_NOW 2 /* Bind function calls immediately */
48#define RTLD_MODEMASK 0x3
49#define RTLD_GLOBAL 0x100 /* Make symbols globally available */
50#define RTLD_LOCAL 0 /* Opposite of RTLD_GLOBAL, and the default */
51#define RTLD_TRACE 0x200 /* Trace loaded objects and exit */
52
53/*
54 * Request arguments for dlinfo().
55 */
56#define RTLD_DI_LINKMAP 2
57#define RTLD_DI_SERINFO 4
58#define RTLD_DI_SERINFOSIZE 5
59#define RTLD_DI_ORIGIN 6
60
61/*
62 * Special handle arguments for dlsym()/dlinfo().
63 */
64#define RTLD_NEXT ((void *) -1) /* Search subsequent objects */
65#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm */
66#define RTLD_SELF ((void *) -3) /* Search the caller itself. */
67
68/*
69 * Structure filled in by dladdr().
70 */
71typedef struct dl_info {
72 const char *dli_fname; /* Pathname of shared object */
73 void *dli_fbase; /* Base address of shared object */
74 const char *dli_sname; /* Name of nearest symbol */
75 void *dli_saddr; /* Address of nearest symbol */
76} Dl_info;
77
78/*
79 * Avoid sys/types.h namespace pollution.
80 */
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81
82/*
83 * Structures, returned by the RTLD_DI_SERINFO dlinfo() request.
84 */
85typedef struct dl_serpath {
86 char * dls_name; /* single search path entry */
87 unsigned int dls_flags; /* path information */
88} Dl_serpath;
89
90typedef struct dl_serinfo {
e2565a42 91 __size_t dls_size; /* total buffer size */
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92 unsigned int dls_cnt; /* number of path entries */
93 Dl_serpath dls_serpath[1]; /* there may be more than one */
94} Dl_serinfo;
95
96__BEGIN_DECLS
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97int dladdr(const void *, Dl_info *);
98int dlclose(void *);
99const char *dlerror(void);
100int dlinfo(void *, int, void *);
101void dllockinit(void *, void *(*)(void *), void (*)(void *),
102 void (*)(void *), void (*)(void *),
103 void (*)(void *), void (*)(void *));
104void *dlopen(const char *, int);
105void *dlsym(void *, const char *);
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106__END_DECLS
107
108#endif /* !_DLFCN_H_ */