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 /* 123 * Valid values for handle argument to dlsym(3C). 124 */ 125 #define RTLD_NEXT (void *)-1 /* look in `next' dependency */ 126 #define RTLD_DEFAULT (void *)-2 /* look up symbol from scope */ 127 /* of current object */ 128 #define RTLD_SELF (void *)-3 /* look in `ourself' */ 129 #define RTLD_PROBE (void *)-4 /* look up symbol from scope */ 130 /* of current object, */ 131 /* using currently */ 132 /* loaded objects only. */ 133 /* 134 * Valid values for mode argument to dlopen. 135 */ 136 #define RTLD_LAZY 0x00001 /* deferred function binding */ 137 #define RTLD_NOW 0x00002 /* immediate function binding */ 138 #define RTLD_NOLOAD 0x00004 /* don't load object */ 139 140 #define RTLD_GLOBAL 0x00100 /* export symbols to others */ 141 #define RTLD_LOCAL 0x00000 /* symbols are only available */ 142 /* to group members */ 143 #define RTLD_PARENT 0x00200 /* add parent (caller) to */ 144 /* a group dependencies */ 145 #define RTLD_GROUP 0x00400 /* resolve symbols within */ 146 /* members of the group */ 147 #define RTLD_WORLD 0x00800 /* resolve symbols within */ 148 /* global objects */ 149 #define RTLD_NODELETE 0x01000 /* do not remove members */ 150 #define RTLD_FIRST 0x02000 /* only first object is */ 151 /* available for dlsym */ 152 #define RTLD_CONFGEN 0x10000 /* crle(1) config generation */ 153 /* internal use only */ 154 155 /* 156 * Valid values for flag argument to dldump. 157 */ 158 #define RTLD_REL_RELATIVE 0x00001 /* apply relative relocs */ 159 #define RTLD_REL_EXEC 0x00002 /* apply symbolic relocs that */ 160 /* bind to main */ 161 #define RTLD_REL_DEPENDS 0x00004 /* apply symbolic relocs that */ 162 /* bind to dependencies */ 163 #define RTLD_REL_PRELOAD 0x00008 /* apply symbolic relocs that */ 164 /* bind to preload objs */ 165 #define RTLD_REL_SELF 0x00010 /* apply symbolic relocs that */ 166 /* bind to ourself */ 167 #define RTLD_REL_WEAK 0x00020 /* apply symbolic weak relocs */ 168 /* even if unresolved */ 169 #define RTLD_REL_ALL 0x00fff /* apply all relocs */ 170 171 #define RTLD_MEMORY 0x01000 /* use memory sections */ 172 #define RTLD_STRIP 0x02000 /* retain allocable sections */ 173 /* only */ 174 #define RTLD_NOHEAP 0x04000 /* do no save any heap */ 175 #define RTLD_CONFSET 0x10000 /* crle(1) config generation */ 176 /* internal use only */ 177 178 /* 179 * Valid values for dladdr1() flags. 180 */ 181 #define RTLD_DL_SYMENT 1 /* return symbol table entry */ 182 #define RTLD_DL_LINKMAP 2 /* return public link-map */ 183 #define RTLD_DL_MASK 0xffff 184 185 186 /* 187 * Arguments for dlinfo() 188 */ 189 #define RTLD_DI_LMID 1 /* obtain link-map id */ 190 #define RTLD_DI_LINKMAP 2 /* obtain link-map */ 191 #define RTLD_DI_CONFIGADDR 3 /* obtain config addr */ 192 #define RTLD_DI_SERINFO 4 /* obtain search path info or */ 193 #define RTLD_DI_SERINFOSIZE 5 /* associated info size */ 194 #define RTLD_DI_ORIGIN 6 /* obtain objects origin */ 195 #define RTLD_DI_PROFILENAME 7 /* obtain profile object name */ 196 /* internal use only */ 197 #define RTLD_DI_PROFILEOUT 8 /* obtain profile output name */ 198 /* internal use only */ 199 #define RTLD_DI_GETSIGNAL 9 /* get termination signal */ 200 #define RTLD_DI_SETSIGNAL 10 /* set termination signal */ 201 #define RTLD_DI_ARGSINFO 11 /* get process arguments */ 202 /* environment and auxv */ 203 #define RTLD_DI_MMAPS 12 /* obtain objects mappings or */ 204 #define RTLD_DI_MMAPCNT 13 /* mapping count */ 205 #define RTLD_DI_DEFERRED 14 /* assign new dependency to a */ 206 /* deferred dependency */ 207 #define RTLD_DI_DEFERRED_SYM 15 /* assign new dependency to a */ 208 /* deferred dependency */ 209 /* using a symbol name */ 210 #define RTLD_DI_MAX 15 211 212 #if !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) 213 /* 214 * Version information for Dl_amd64_unwindinfo.dlui_version 215 */ 216 #define DLUI_VERS_1 1 217 #define DLUI_VERS_CURRENT DLUI_VERS_1 218 219 /* 220 * Valid flags for Dl_amd64_unwindinfo.dlfi_flags 221 */ 222 #define DLUI_FLG_NOUNWIND 0x0001 /* object has no Unwind info */ 223 #define DLUI_FLG_NOOBJ 0x0002 /* no object was found */ 224 /* matching the pc provided */ 225 #endif /* !defined(_XOPEN_SOURCE) || defined(__EXTENSIONS__) */ 226 227 #ifdef __cplusplus 228 } 229 #endif 230 231 #endif /* _DLFCN_H */ 232