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(3C). 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 */ 237