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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 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 #ifdef __STDC__ 49 typedef struct dl_info { 50 const char *dli_fname; /* file containing address range */ 51 void *dli_fbase; /* base address of file image */ 52 const char *dli_sname; /* symbol name */ 53 void *dli_saddr; /* symbol address */ 54 } Dl_info; 55 #else 56 typedef struct dl_info { 57 char *dli_fname; 58 void *dli_fbase; 59 char *dli_sname; 60 void *dli_saddr; 61 } Dl_info; 62 #endif /* __STDC__ */ 63 typedef Dl_info Dl_info_t; 64 65 typedef struct dl_serpath { 66 char *dls_name; /* library search path name */ 67 uint_t dls_flags; /* path information */ 68 } Dl_serpath; 69 typedef Dl_serpath Dl_serpath_t; 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 typedef Dl_serinfo Dl_serinfo_t; 77 78 typedef struct dl_argsinfo { 79 long dla_argc; /* process argument count */ 80 char **dla_argv; /* process arguments */ 81 char **dla_envp; /* process environment variables */ 82 auxv_t *dla_auxv; /* process auxv vectors */ 83 } Dl_argsinfo; 84 typedef Dl_argsinfo Dl_argsinfo_t; 85 86 typedef struct { 87 mmapobj_result_t *dlm_maps; /* mapping information */ 88 uint_t dlm_acnt; /* number of dlm_maps mappings */ 89 uint_t dlm_rcnt; /* number of returned mappings */ 90 } Dl_mapinfo_t; 91 92 typedef struct { 93 uint_t dlui_version; /* version # */ 94 uint_t dlui_flags; /* flags */ 95 char *dlui_objname; /* path to object */ 96 void *dlui_unwindstart; /* star of unwind hdr */ 97 void *dlui_unwindend; /* end of unwind hdr */ 98 void *dlui_segstart; /* start of segment described */ 99 /* by unwind block */ 100 void *dlui_segend; /* end of segment described */ 101 /* by unwind block */ 102 } Dl_amd64_unwindinfo; 103 typedef Dl_amd64_unwindinfo Dl_amd64_unwindinfo_t; 104 105 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 106 107 108 typedef ulong_t Lmid_t; 109 110 /* 111 * Declarations used for dynamic linking support routines. 112 */ 113 #ifdef __STDC__ 114 extern void *dlopen(const char *, int); 115 extern void *dlsym(void *_RESTRICT_KYWD, const char *_RESTRICT_KYWD); 116 extern int dlclose(void *); 117 extern char *dlerror(void); 118 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 119 extern void *dlmopen(Lmid_t, const char *, int); 120 extern int dladdr(void *, Dl_info *); 121 extern int dladdr1(void *, Dl_info *, void **, int); 122 extern int dldump(const char *, const char *, int); 123 extern int dlinfo(void *, int, void *); 124 extern Dl_amd64_unwindinfo *dlamd64getunwind(void *, Dl_amd64_unwindinfo *); 125 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 126 #else 127 extern void *dlopen(); 128 extern void *dlsym(); 129 extern int dlclose(); 130 extern char *dlerror(); 131 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 132 extern void *dlmopen(); 133 extern int dladdr(); 134 extern int dladdr1(); 135 extern int dldump(); 136 extern int dlinfo(); 137 extern Dl_amd64_unwindinfo *dlamd64getunwind(); 138 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 139 #endif /* __STDC__ */ 140 141 #pragma unknown_control_flow(dlopen, dlsym, dlclose, dlerror) 142 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 143 #pragma unknown_control_flow(dlmopen, dladdr, dladdr1, dldump, dlinfo) 144 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 145 146 /* 147 * Valid values for handle argument to dlsym(3x). 148 */ 149 #define RTLD_NEXT (void *)-1 /* look in `next' dependency */ 150 #define RTLD_DEFAULT (void *)-2 /* look up symbol from scope */ 151 /* of current object */ 152 #define RTLD_SELF (void *)-3 /* look in `ourself' */ 153 #define RTLD_PROBE (void *)-4 /* look up symbol from scope */ 154 /* of current object, */ 155 /* using currently */ 156 /* loaded objects only. */ 157 /* 158 * Valid values for mode argument to dlopen. 159 */ 160 #define RTLD_LAZY 0x00001 /* deferred function binding */ 161 #define RTLD_NOW 0x00002 /* immediate function binding */ 162 #define RTLD_NOLOAD 0x00004 /* don't load object */ 163 164 #define RTLD_GLOBAL 0x00100 /* export symbols to others */ 165 #define RTLD_LOCAL 0x00000 /* symbols are only available */ 166 /* to group members */ 167 #define RTLD_PARENT 0x00200 /* add parent (caller) to */ 168 /* a group dependencies */ 169 #define RTLD_GROUP 0x00400 /* resolve symbols within */ 170 /* members of the group */ 171 #define RTLD_WORLD 0x00800 /* resolve symbols within */ 172 /* global objects */ 173 #define RTLD_NODELETE 0x01000 /* do not remove members */ 174 #define RTLD_FIRST 0x02000 /* only first object is */ 175 /* available for dlsym */ 176 #define RTLD_CONFGEN 0x10000 /* crle(1) config generation */ 177 /* internal use only */ 178 179 /* 180 * Valid values for flag argument to dldump. 181 */ 182 #define RTLD_REL_RELATIVE 0x00001 /* apply relative relocs */ 183 #define RTLD_REL_EXEC 0x00002 /* apply symbolic relocs that */ 184 /* bind to main */ 185 #define RTLD_REL_DEPENDS 0x00004 /* apply symbolic relocs that */ 186 /* bind to dependencies */ 187 #define RTLD_REL_PRELOAD 0x00008 /* apply symbolic relocs that */ 188 /* bind to preload objs */ 189 #define RTLD_REL_SELF 0x00010 /* apply symbolic relocs that */ 190 /* bind to ourself */ 191 #define RTLD_REL_WEAK 0x00020 /* apply symbolic weak relocs */ 192 /* even if unresolved */ 193 #define RTLD_REL_ALL 0x00fff /* apply all relocs */ 194 195 #define RTLD_MEMORY 0x01000 /* use memory sections */ 196 #define RTLD_STRIP 0x02000 /* retain allocable sections */ 197 /* only */ 198 #define RTLD_NOHEAP 0x04000 /* do no save any heap */ 199 #define RTLD_CONFSET 0x10000 /* crle(1) config generation */ 200 /* internal use only */ 201 202 /* 203 * Valid values for dladdr1() flags. 204 */ 205 #define RTLD_DL_SYMENT 1 /* return symbol table entry */ 206 #define RTLD_DL_LINKMAP 2 /* return public link-map */ 207 #define RTLD_DL_MASK 0xffff 208 209 210 /* 211 * Arguments for dlinfo() 212 */ 213 #define RTLD_DI_LMID 1 /* obtain link-map id */ 214 #define RTLD_DI_LINKMAP 2 /* obtain link-map */ 215 #define RTLD_DI_CONFIGADDR 3 /* obtain config addr */ 216 #define RTLD_DI_SERINFO 4 /* obtain search path info or */ 217 #define RTLD_DI_SERINFOSIZE 5 /* associated info size */ 218 #define RTLD_DI_ORIGIN 6 /* obtain objects origin */ 219 #define RTLD_DI_PROFILENAME 7 /* obtain profile object name */ 220 /* internal use only */ 221 #define RTLD_DI_PROFILEOUT 8 /* obtain profile output name */ 222 /* internal use only */ 223 #define RTLD_DI_GETSIGNAL 9 /* get termination signal */ 224 #define RTLD_DI_SETSIGNAL 10 /* set termination signal */ 225 #define RTLD_DI_ARGSINFO 11 /* get process arguments */ 226 /* environment and auxv */ 227 #define RTLD_DI_MMAPS 12 /* obtain objects mappings or */ 228 #define RTLD_DI_MMAPCNT 13 /* mapping count */ 229 #define RTLD_DI_MAX 13 230 231 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 232 /* 233 * Version information for Dl_amd64_unwindinfo.dlui_version 234 */ 235 #define DLUI_VERS_1 1 236 #define DLUI_VERS_CURRENT DLUI_VERS_1 237 238 /* 239 * Valid flags for Dl_amd64_unwindinfo.dlfi_flags 240 */ 241 #define DLUI_FLG_NOUNWIND 0x0001 /* object has no Unwind info */ 242 #define DLUI_FLG_NOOBJ 0x0002 /* no object was found */ 243 /* matching the pc provided */ 244 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 245 246 #ifdef __cplusplus 247 } 248 #endif 249 250 #endif /* _DLFCN_H */ 251