| | 1 | /* ltdl.h -- generic dlopen functions |
| | 2 | |
| | 3 | Copyright (C) 1998-2000, 2004, 2005, |
| | 4 | 2007, 2008 Free Software Foundation, Inc. |
| | 5 | Written by Thomas Tanner, 1998 |
| | 6 | |
| | 7 | NOTE: The canonical source of this file is maintained with the |
| | 8 | GNU Libtool package. Report bugs to bug-libtool@gnu.org. |
| | 9 | |
| | 10 | GNU Libltdl is free software; you can redistribute it and/or |
| | 11 | modify it under the terms of the GNU Lesser General Public |
| | 12 | License as published by the Free Software Foundation; either |
| | 13 | version 2 of the License, or (at your option) any later version. |
| | 14 | |
| | 15 | As a special exception to the GNU Lesser General Public License, |
| | 16 | if you distribute this file as part of a program or library that |
| | 17 | is built using GNU Libtool, you may include this file under the |
| | 18 | same distribution terms that you use for the rest of that program. |
| | 19 | |
| | 20 | GNU Libltdl is distributed in the hope that it will be useful, |
| | 21 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 23 | GNU Lesser General Public License for more details. |
| | 24 | |
| | 25 | You should have received a copy of the GNU Lesser General Public |
| | 26 | License along with GNU Libltdl; see the file COPYING.LIB. If not, a |
| | 27 | copy can be downloaded from http://www.gnu.org/licenses/lgpl.html, |
| | 28 | or obtained by writing to the Free Software Foundation, Inc., |
| | 29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| | 30 | */ |
| | 31 | |
| | 32 | /* Only include this header file once. */ |
| | 33 | #if !defined(LTDL_H) |
| | 34 | #define LTDL_H 1 |
| | 35 | |
| | 36 | #include <libltdl/lt_system.h> |
| | 37 | #include <libltdl/lt_error.h> |
| | 38 | #include <libltdl/lt_dlloader.h> |
| | 39 | |
| | 40 | LT_BEGIN_C_DECLS |
| | 41 | |
| | 42 | |
| | 43 | /* LT_STRLEN can be used safely on NULL pointers. */ |
| | 44 | #define LT_STRLEN(s) (((s) && (s)[0]) ? strlen (s) : 0) |
| | 45 | |
| | 46 | \f |
| | 47 | /* --- DYNAMIC MODULE LOADING API --- */ |
| | 48 | |
| | 49 | |
| | 50 | typedef struct lt__handle *lt_dlhandle; /* A loaded module. */ |
| | 51 | |
| | 52 | /* Initialisation and finalisation functions for libltdl. */ |
| | 53 | LT_SCOPE int lt_dlinit (void); |
| | 54 | LT_SCOPE int lt_dlexit (void); |
| | 55 | |
| | 56 | /* Module search path manipulation. */ |
| | 57 | LT_SCOPE int lt_dladdsearchdir (const char *search_dir); |
| | 58 | LT_SCOPE int lt_dlinsertsearchdir (const char *before, |
| | 59 | const char *search_dir); |
| | 60 | LT_SCOPE int lt_dlsetsearchpath (const char *search_path); |
| | 61 | LT_SCOPE const char *lt_dlgetsearchpath (void); |
| | 62 | LT_SCOPE int lt_dlforeachfile ( |
| | 63 | const char *search_path, |
| | 64 | int (*func) (const char *filename, void *data), |
| | 65 | void *data); |
| | 66 | |
| | 67 | /* User module loading advisors. */ |
| | 68 | LT_SCOPE int lt_dladvise_init (lt_dladvise *advise); |
| | 69 | LT_SCOPE int lt_dladvise_destroy (lt_dladvise *advise); |
| | 70 | LT_SCOPE int lt_dladvise_ext (lt_dladvise *advise); |
| | 71 | LT_SCOPE int lt_dladvise_resident (lt_dladvise *advise); |
| | 72 | LT_SCOPE int lt_dladvise_local (lt_dladvise *advise); |
| | 73 | LT_SCOPE int lt_dladvise_global (lt_dladvise *advise); |
| | 74 | LT_SCOPE int lt_dladvise_preload (lt_dladvise *advise); |
| | 75 | |
| | 76 | /* Portable libltdl versions of the system dlopen() API. */ |
| | 77 | LT_SCOPE lt_dlhandle lt_dlopen (const char *filename); |
| | 78 | LT_SCOPE lt_dlhandle lt_dlopenext (const char *filename); |
| | 79 | LT_SCOPE lt_dlhandle lt_dlopenadvise (const char *filename, |
| | 80 | lt_dladvise advise); |
| | 81 | LT_SCOPE void * lt_dlsym (lt_dlhandle handle, const char *name); |
| | 82 | LT_SCOPE const char *lt_dlerror (void); |
| | 83 | LT_SCOPE int lt_dlclose (lt_dlhandle handle); |
| | 84 | |
| | 85 | |
| | 86 | |
| | 87 | /* --- PRELOADED MODULE SUPPORT --- */ |
| | 88 | |
| | 89 | |
| | 90 | /* A preopened symbol. Arrays of this type comprise the exported |
| | 91 | symbols for a dlpreopened module. */ |
| | 92 | typedef struct { |
| | 93 | const char *name; |
| | 94 | void *address; |
| | 95 | } lt_dlsymlist; |
| | 96 | |
| | 97 | typedef int lt_dlpreload_callback_func (lt_dlhandle handle); |
| | 98 | |
| | 99 | LT_SCOPE int lt_dlpreload (const lt_dlsymlist *preloaded); |
| | 100 | LT_SCOPE int lt_dlpreload_default (const lt_dlsymlist *preloaded); |
| | 101 | LT_SCOPE int lt_dlpreload_open (const char *originator, |
| | 102 | lt_dlpreload_callback_func *func); |
| | 103 | |
| | 104 | #define lt_preloaded_symbols lt__PROGRAM__LTX_preloaded_symbols |
| | 105 | #define LTDL_SET_PRELOADED_SYMBOLS() LT_STMT_START{ \ |
| | 106 | extern const lt_dlsymlist lt_preloaded_symbols[]; \ |
| | 107 | lt_dlpreload_default(lt_preloaded_symbols); \ |
| | 108 | }LT_STMT_END |
| | 109 | |
| | 110 | |
| | 111 | |
| | 112 | \f |
| | 113 | /* --- MODULE INFORMATION --- */ |
| | 114 | |
| | 115 | |
| | 116 | /* Associating user data with loaded modules. */ |
| | 117 | typedef void * lt_dlinterface_id; |
| | 118 | typedef int lt_dlhandle_interface (lt_dlhandle handle, const char *id_string); |
| | 119 | |
| | 120 | LT_SCOPE lt_dlinterface_id lt_dlinterface_register (const char *id_string, |
| | 121 | lt_dlhandle_interface *iface); |
| | 122 | LT_SCOPE void lt_dlinterface_free (lt_dlinterface_id key); |
| | 123 | LT_SCOPE void * lt_dlcaller_set_data (lt_dlinterface_id key, |
| | 124 | lt_dlhandle handle, void *data); |
| | 125 | LT_SCOPE void * lt_dlcaller_get_data (lt_dlinterface_id key, |
| | 126 | lt_dlhandle handle); |
| | 127 | |
| | 128 | |
| | 129 | /* Read only information pertaining to a loaded module. */ |
| | 130 | typedef struct { |
| | 131 | char * filename; /* file name */ |
| | 132 | char * name; /* module name */ |
| | 133 | int ref_count; /* number of times lt_dlopened minus |
| | 134 | number of times lt_dlclosed. */ |
| | 135 | unsigned int is_resident:1; /* module can't be unloaded. */ |
| | 136 | unsigned int is_symglobal:1; /* module symbols can satisfy |
| | 137 | subsequently loaded modules. */ |
| | 138 | unsigned int is_symlocal:1; /* module symbols are only available |
| | 139 | locally. */ |
| | 140 | } lt_dlinfo; |
| | 141 | |
| | 142 | LT_SCOPE const lt_dlinfo *lt_dlgetinfo (lt_dlhandle handle); |
| | 143 | |
| | 144 | LT_SCOPE lt_dlhandle lt_dlhandle_iterate (lt_dlinterface_id iface, |
| | 145 | lt_dlhandle place); |
| | 146 | LT_SCOPE lt_dlhandle lt_dlhandle_fetch (lt_dlinterface_id iface, |
| | 147 | const char *module_name); |
| | 148 | LT_SCOPE int lt_dlhandle_map (lt_dlinterface_id iface, |
| | 149 | int (*func) (lt_dlhandle handle, void *data), |
| | 150 | void *data); |
| | 151 | |
| | 152 | |
| | 153 | |
| | 154 | /* Deprecated module residency management API. */ |
| | 155 | LT_SCOPE int lt_dlmakeresident (lt_dlhandle handle); |
| | 156 | LT_SCOPE int lt_dlisresident (lt_dlhandle handle); |
| | 157 | |
| | 158 | #define lt_ptr void * |
| | 159 | |
| | 160 | LT_END_C_DECLS |
| | 161 | |
| | 162 | #endif /*!defined(LTDL_H)*/ |
HCoop / hcoop / debian / courier-authlib.git / blame_incremental