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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright (c) 1989 AT&T 27 * All Rights Reserved 28 * 29 */ 30 31 #ifndef _DLFCN_H 32 #define _DLFCN_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */ 35 36 #include <sys/feature_tests.h> 37 #include <sys/types.h> 38 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 39 #include <sys/auxv.h> 40 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 /* 47 * Information structures for various dlinfo() requests. 48 */ 49 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 50 #ifdef __STDC__ 51 typedef struct dl_info { 52 const char *dli_fname; /* file containing address range */ 53 void *dli_fbase; /* base address of file image */ 54 const char *dli_sname; /* symbol name */ 55 void *dli_saddr; /* symbol address */ 56 } Dl_info; 57 #else 58 typedef struct dl_info { 59 char *dli_fname; 60 void *dli_fbase; 61 char *dli_sname; 62 void *dli_saddr; 63 } Dl_info; 64 #endif /* __STDC__ */ 65 66 typedef struct dl_serpath { 67 char *dls_name; /* library search path name */ 68 uint_t dls_flags; /* path information */ 69 } Dl_serpath; 70 71 typedef struct dl_serinfo { 72 size_t dls_size; /* total buffer size */ 73 uint_t dls_cnt; /* number of path entries */ 74 Dl_serpath dls_serpath[1]; /* there may be more than one */ 75 } Dl_serinfo; 76 77 typedef struct { 78 uint_t dlui_version; /* version # */ 79 uint_t dlui_flags; /* flags */ 80 char *dlui_objname; /* path to object */ 81 void *dlui_unwindstart; /* star of unwind hdr */ 82 void *dlui_unwindend; /* end of unwind hdr */ 83 void *dlui_segstart; /* start of segment described */ 84 /* by unwind block */ 85 void *dlui_segend; /* end of segment described */ 86 /* by unwind block */ 87 } Dl_amd64_unwindinfo; 88 89 typedef struct dl_argsinfo { 90 long dla_argc; /* process argument count */ 91 char **dla_argv; /* process arguments */ 92 char **dla_envp; /* process environment variables */ 93 auxv_t *dla_auxv; /* process auxv vectors */ 94 } Dl_argsinfo; 95 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 96 97 98 typedef ulong_t Lmid_t; 99 100 /* 101 * Declarations used for dynamic linking support routines. 102 */ 103 #ifdef __STDC__ 104 extern void *dlopen(const char *, int); 105 extern void *dlsym(void *_RESTRICT_KYWD, const char *_RESTRICT_KYWD); 106 extern int dlclose(void *); 107 extern char *dlerror(void); 108 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 109 extern void *dlmopen(Lmid_t, const char *, int); 110 extern int dladdr(void *, Dl_info *); 111 extern int dladdr1(void *, Dl_info *, void **, int); 112 extern int dldump(const char *, const char *, int); 113 extern int dlinfo(void *, int, void *); 114 extern Dl_amd64_unwindinfo *dlamd64getunwind(void *, Dl_amd64_unwindinfo *); 115 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 116 #else 117 extern void *dlopen(); 118 extern void *dlsym(); 119 extern int dlclose(); 120 extern char *dlerror(); 121 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 122 extern void *dlmopen(); 123 extern int dladdr(); 124 extern int dladdr1(); 125 extern int dldump(); 126 extern int dlinfo(); 127 extern Dl_amd64_unwindinfo *dlamd64getunwind(); 128 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 129 #endif /* __STDC__ */ 130 131 #pragma unknown_control_flow(dlopen, dlsym, dlclose, dlerror) 132 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 133 #pragma unknown_control_flow(dlmopen, dladdr, dladdr1, dldump, dlinfo) 134 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 135 136 /* 137 * Valid values for handle argument to dlsym(3x). 138 */ 139 #define RTLD_NEXT (void *)-1 /* look in `next' dependency */ 140 #define RTLD_DEFAULT (void *)-2 /* look up symbol from scope */ 141 /* of current object */ 142 #define RTLD_SELF (void *)-3 /* look in `ourself' */ 143 #define RTLD_PROBE (void *)-4 /* look up symbol from scope */ 144 /* of current object, */ 145 /* using currently */ 146 /* loaded objects only. */ 147 /* 148 * Valid values for mode argument to dlopen. 149 */ 150 #define RTLD_LAZY 0x00001 /* deferred function binding */ 151 #define RTLD_NOW 0x00002 /* immediate function binding */ 152 #define RTLD_NOLOAD 0x00004 /* don't load object */ 153 154 #define RTLD_GLOBAL 0x00100 /* export symbols to others */ 155 #define RTLD_LOCAL 0x00000 /* symbols are only available */ 156 /* to group members */ 157 #define RTLD_PARENT 0x00200 /* add parent (caller) to */ 158 /* a group dependencies */ 159 #define RTLD_GROUP 0x00400 /* resolve symbols within */ 160 /* members of the group */ 161 #define RTLD_WORLD 0x00800 /* resolve symbols within */ 162 /* global objects */ 163 #define RTLD_NODELETE 0x01000 /* do not remove members */ 164 #define RTLD_FIRST 0x02000 /* only first object is */ 165 /* available for dlsym */ 166 #define RTLD_CONFGEN 0x10000 /* crle(1) config generation */ 167 /* internal use only */ 168 169 /* 170 * Valid values for flag argument to dldump. 171 */ 172 #define RTLD_REL_RELATIVE 0x00001 /* apply relative relocs */ 173 #define RTLD_REL_EXEC 0x00002 /* apply symbolic relocs that */ 174 /* bind to main */ 175 #define RTLD_REL_DEPENDS 0x00004 /* apply symbolic relocs that */ 176 /* bind to dependencies */ 177 #define RTLD_REL_PRELOAD 0x00008 /* apply symbolic relocs that */ 178 /* bind to preload objs */ 179 #define RTLD_REL_SELF 0x00010 /* apply symbolic relocs that */ 180 /* bind to ourself */ 181 #define RTLD_REL_WEAK 0x00020 /* apply symbolic weak relocs */ 182 /* even if unresolved */ 183 #define RTLD_REL_ALL 0x00fff /* apply all relocs */ 184 185 #define RTLD_MEMORY 0x01000 /* use memory sections */ 186 #define RTLD_STRIP 0x02000 /* retain allocable sections */ 187 /* only */ 188 #define RTLD_NOHEAP 0x04000 /* do no save any heap */ 189 #define RTLD_CONFSET 0x10000 /* crle(1) config generation */ 190 /* internal use only */ 191 192 /* 193 * Valid values for dladdr1() flags. 194 */ 195 #define RTLD_DL_SYMENT 1 /* return symbol table entry */ 196 #define RTLD_DL_LINKMAP 2 /* return public link-map */ 197 #define RTLD_DL_MASK 0xffff 198 199 200 /* 201 * Arguments for dlinfo() 202 */ 203 #define RTLD_DI_LMID 1 /* obtain link-map id */ 204 #define RTLD_DI_LINKMAP 2 /* obtain link-map */ 205 #define RTLD_DI_CONFIGADDR 3 /* obtain config addr */ 206 #define RTLD_DI_SERINFO 4 /* obtain search path info or */ 207 #define RTLD_DI_SERINFOSIZE 5 /* associated info size */ 208 #define RTLD_DI_ORIGIN 6 /* obtain objects origin */ 209 #define RTLD_DI_PROFILENAME 7 /* obtain profile object name */ 210 /* internal use only */ 211 #define RTLD_DI_PROFILEOUT 8 /* obtain profile output name */ 212 /* internal use only */ 213 #define RTLD_DI_GETSIGNAL 9 /* get termination signal */ 214 #define RTLD_DI_SETSIGNAL 10 /* set termination signal */ 215 #define RTLD_DI_ARGSINFO 11 /* get process arguments */ 216 /* environment and auxv */ 217 #define RTLD_DI_MAX 11 218 219 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 220 /* 221 * Version information for Dl_amd64_unwindinfo.dlui_version 222 */ 223 #define DLUI_VERS_1 1 224 #define DLUI_VERS_CURRENT DLUI_VERS_1 225 226 /* 227 * Valid flags for Dl_amd64_unwindinfo.dlfi_flags 228 */ 229 #define DLUI_FLG_NOUNWIND 0x0001 /* object has no Unwind info */ 230 #define DLUI_FLG_NOOBJ 0x0002 /* no object was found */ 231 /* matching the pc provided */ 232 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 233 234 #ifdef __cplusplus 235 } 236 #endif 237 238 #endif /* _DLFCN_H */ 239