| /* |
| * BRLTTY - A background process providing access to the console screen (when in |
| * text mode) for a blind person using a refreshable braille display. |
| * |
| * Copyright (C) 1995-2023 by The BRLTTY Developers. |
| * |
| * BRLTTY comes with ABSOLUTELY NO WARRANTY. |
| * |
| * This is free software, placed under the terms of the |
| * GNU Lesser General Public License, as published by the Free Software |
| * Foundation; either version 2.1 of the License, or (at your option) any |
| * later version. Please see the file LICENSE-LGPL for details. |
| * |
| * Web Page: http://brltty.app/ |
| * |
| * This software is maintained by Dave Mielke <dave@mielke.cc>. |
| */ |
| |
| #include "prologue.h" |
| |
| #include <string.h> |
| |
| #ifdef HAVE_SHL_LOAD |
| #include <dl.h> |
| #endif /* HAVE_SHL_LOAD */ |
| |
| #include "log.h" |
| #include "dynld.h" |
| |
| void * |
| loadSharedObject (const char *path) { |
| #ifdef HAVE_SHL_LOAD |
| shl_t object = shl_load(path, BIND_IMMEDIATE|BIND_VERBOSE|DYNAMIC_PATH, 0L); |
| if (object) return object; |
| logMessage(LOG_ERR, "Shared library '%s' not loaded: %s", |
| path, strerror(errno)); |
| #endif /* HAVE_SHL_LOAD */ |
| return NULL; |
| } |
| |
| void |
| unloadSharedObject (void *object) { |
| #ifdef HAVE_SHL_LOAD |
| if (shl_unload(object) == -1) |
| logMessage(LOG_ERR, "Shared library unload error: %s", |
| strerror(errno)); |
| #endif /* HAVE_SHL_LOAD */ |
| } |
| |
| int |
| findSharedSymbol (void *object, const char *symbol, const void **address) { |
| #ifdef HAVE_SHL_LOAD |
| shl_t handle = object; |
| if (shl_findsym(&handle, symbol, TYPE_UNDEFINED, address) != -1) return 1; |
| logMessage(LOG_ERR, "Shared symbol '%s' not found: %s", |
| symbol, strerror(errno)); |
| #endif /* HAVE_SHL_LOAD */ |
| return 0; |
| } |
| |
| const char * |
| getSharedSymbolName (void *address, ptrdiff_t *offset) { |
| return NULL; |
| } |