1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
23 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
24 *
25 * Copyright (c) 1989 AT&T
26 * All Rights Reserved
27 *
28 */
29
30 #ifndef _DLFCN_H
31 #define _DLFCN_H
32
33 #include <sys/feature_tests.h>
34 #include <sys/types.h>
35 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__)
36 #include <sys/auxv.h>
37 #include <sys/mman.h>
38 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */
39
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43
44 /*
45 * Information structures for various dlinfo() requests.
46 */
47 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__)
48 typedef struct dl_info {
49 const char *dli_fname; /* file containing address range */
50 void *dli_fbase; /* base address of file image */
51 const char *dli_sname; /* symbol name */
52 void *dli_saddr; /* symbol address */
53 } Dl_info;
54 typedef Dl_info Dl_info_t;
55
56 typedef struct dl_serpath {
57 char *dls_name; /* library search path name */
58 uint_t dls_flags; /* path information */
59 } Dl_serpath;
60 typedef Dl_serpath Dl_serpath_t;
61
62 typedef struct dl_serinfo {
63 size_t dls_size; /* total buffer size */
64 uint_t dls_cnt; /* number of path entries */
65 Dl_serpath dls_serpath[1]; /* there may be more than one */
66 } Dl_serinfo;
67 typedef Dl_serinfo Dl_serinfo_t;
68
69 typedef struct dl_argsinfo {
70 long dla_argc; /* process argument count */
71 char **dla_argv; /* process arguments */
72 char **dla_envp; /* process environment variables */
73 auxv_t *dla_auxv; /* process auxv vectors */
74 } Dl_argsinfo;
75 typedef Dl_argsinfo Dl_argsinfo_t;
76
77 typedef struct {
78 mmapobj_result_t *dlm_maps; /* mapping information */
79 uint_t dlm_acnt; /* number of dlm_maps mappings */
80 uint_t dlm_rcnt; /* number of returned mappings */
81 } Dl_mapinfo_t;
82
83 typedef struct {
84 uint_t dlui_version; /* version # */
85 uint_t dlui_flags; /* flags */
86 char *dlui_objname; /* path to object */
87 void *dlui_unwindstart; /* star of unwind hdr */
88 void *dlui_unwindend; /* end of unwind hdr */
89 void *dlui_segstart; /* start of segment described */
90 /* by unwind block */
91 void *dlui_segend; /* end of segment described */
92 /* by unwind block */
93 } Dl_amd64_unwindinfo;
94 typedef Dl_amd64_unwindinfo Dl_amd64_unwindinfo_t;
95
96 typedef struct {
97 const char *dld_refname; /* reference name */
98 const char *dld_depname; /* new dependency name */
99 } Dl_definfo_t;
100
101 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */
102
103
104 typedef ulong_t Lmid_t;
105
106 /*
107 * Declarations used for dynamic linking support routines.
108 */
109 extern void *dlopen(const char *, int);
110 extern void *dlsym(void *_RESTRICT_KYWD, const char *_RESTRICT_KYWD);
111 extern int dlclose(void *);
112 extern char *dlerror(void);
113 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__)
114 extern void *dlmopen(Lmid_t, const char *, int);
115 extern int dladdr(void *, Dl_info *);
116 extern int dladdr1(void *, Dl_info *, void **, int);
117 extern int dldump(const char *, const char *, int);
118 extern int dlinfo(void *, int, void *);
119 extern Dl_amd64_unwindinfo *dlamd64getunwind(void *, Dl_amd64_unwindinfo *);
120 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */
121
122 #pragma unknown_control_flow(dlopen, dlsym, dlclose, dlerror)
123 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__)
124 #pragma unknown_control_flow(dlmopen, dladdr, dladdr1, dldump, dlinfo)
125 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */
126
127 /*
128 * Valid values for handle argument to dlsym(3x).
129 */
130 #define RTLD_NEXT (void *)-1 /* look in `next' dependency */
131 #define RTLD_DEFAULT (void *)-2 /* look up symbol from scope */
132 /* of current object */
133 #define RTLD_SELF (void *)-3 /* look in `ourself' */
134 #define RTLD_PROBE (void *)-4 /* look up symbol from scope */
135 /* of current object, */
136 /* using currently */
137 /* loaded objects only. */
138 /*
139 * Valid values for mode argument to dlopen.
140 */
141 #define RTLD_LAZY 0x00001 /* deferred function binding */
142 #define RTLD_NOW 0x00002 /* immediate function binding */
143 #define RTLD_NOLOAD 0x00004 /* don't load object */
144
145 #define RTLD_GLOBAL 0x00100 /* export symbols to others */
146 #define RTLD_LOCAL 0x00000 /* symbols are only available */
147 /* to group members */
148 #define RTLD_PARENT 0x00200 /* add parent (caller) to */
149 /* a group dependencies */
150 #define RTLD_GROUP 0x00400 /* resolve symbols within */
151 /* members of the group */
152 #define RTLD_WORLD 0x00800 /* resolve symbols within */
153 /* global objects */
154 #define RTLD_NODELETE 0x01000 /* do not remove members */
155 #define RTLD_FIRST 0x02000 /* only first object is */
156 /* available for dlsym */
157 #define RTLD_CONFGEN 0x10000 /* crle(1) config generation */
158 /* internal use only */
159
160 /*
161 * Valid values for flag argument to dldump.
162 */
163 #define RTLD_REL_RELATIVE 0x00001 /* apply relative relocs */
164 #define RTLD_REL_EXEC 0x00002 /* apply symbolic relocs that */
165 /* bind to main */
166 #define RTLD_REL_DEPENDS 0x00004 /* apply symbolic relocs that */
167 /* bind to dependencies */
168 #define RTLD_REL_PRELOAD 0x00008 /* apply symbolic relocs that */
169 /* bind to preload objs */
170 #define RTLD_REL_SELF 0x00010 /* apply symbolic relocs that */
171 /* bind to ourself */
172 #define RTLD_REL_WEAK 0x00020 /* apply symbolic weak relocs */
173 /* even if unresolved */
174 #define RTLD_REL_ALL 0x00fff /* apply all relocs */
175
176 #define RTLD_MEMORY 0x01000 /* use memory sections */
177 #define RTLD_STRIP 0x02000 /* retain allocable sections */
178 /* only */
179 #define RTLD_NOHEAP 0x04000 /* do no save any heap */
180 #define RTLD_CONFSET 0x10000 /* crle(1) config generation */
181 /* internal use only */
182
183 /*
184 * Valid values for dladdr1() flags.
185 */
186 #define RTLD_DL_SYMENT 1 /* return symbol table entry */
187 #define RTLD_DL_LINKMAP 2 /* return public link-map */
188 #define RTLD_DL_MASK 0xffff
189
190
191 /*
192 * Arguments for dlinfo()
193 */
194 #define RTLD_DI_LMID 1 /* obtain link-map id */
195 #define RTLD_DI_LINKMAP 2 /* obtain link-map */
196 #define RTLD_DI_CONFIGADDR 3 /* obtain config addr */
197 #define RTLD_DI_SERINFO 4 /* obtain search path info or */
198 #define RTLD_DI_SERINFOSIZE 5 /* associated info size */
199 #define RTLD_DI_ORIGIN 6 /* obtain objects origin */
200 #define RTLD_DI_PROFILENAME 7 /* obtain profile object name */
201 /* internal use only */
202 #define RTLD_DI_PROFILEOUT 8 /* obtain profile output name */
203 /* internal use only */
204 #define RTLD_DI_GETSIGNAL 9 /* get termination signal */
205 #define RTLD_DI_SETSIGNAL 10 /* set termination signal */
206 #define RTLD_DI_ARGSINFO 11 /* get process arguments */
207 /* environment and auxv */
208 #define RTLD_DI_MMAPS 12 /* obtain objects mappings or */
209 #define RTLD_DI_MMAPCNT 13 /* mapping count */
210 #define RTLD_DI_DEFERRED 14 /* assign new dependency to a */
211 /* deferred dependency */
212 #define RTLD_DI_DEFERRED_SYM 15 /* assign new dependency to a */
213 /* deferred dependency */
214 /* using a symbol name */
215 #define RTLD_DI_MAX 15
216
217 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__)
218 /*
219 * Version information for Dl_amd64_unwindinfo.dlui_version
220 */
221 #define DLUI_VERS_1 1
222 #define DLUI_VERS_CURRENT DLUI_VERS_1
223
224 /*
225 * Valid flags for Dl_amd64_unwindinfo.dlfi_flags
226 */
227 #define DLUI_FLG_NOUNWIND 0x0001 /* object has no Unwind info */
228 #define DLUI_FLG_NOOBJ 0x0002 /* no object was found */
229 /* matching the pc provided */
230 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */
231
232 #ifdef __cplusplus
233 }
234 #endif
235
236 #endif /* _DLFCN_H */