/* $NetBSD: sharedlib.c,v 1.1.1.2 2009/02/18 11:17:18 haad Exp $ */ /* * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU Lesser General Public License v.2.1. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "lib.h" #include "config.h" #include "lvm-string.h" #include "sharedlib.h" #include "toolcontext.h" #include #include #include void get_shared_library_path(struct cmd_context *cmd, const char *libname, char *path, size_t path_len) { struct stat info; const char *lib_dir; /* If libname doesn't begin with '/' then use lib_dir/libname, * if present */ if (libname[0] == '/' || !(lib_dir = find_config_tree_str(cmd, "global/library_dir", 0)) || (dm_snprintf(path, path_len, "%s/%s", lib_dir, libname) == -1) || stat(path, &info) == -1) strncpy(path, libname, path_len); } void *load_shared_library(struct cmd_context *cmd, const char *libname, const char *desc, int silent) { char path[PATH_MAX]; void *library; if (is_static()) { log_error("Not loading shared %s library %s in static mode.", desc, libname); return NULL; } get_shared_library_path(cmd, libname, path, sizeof(path)); log_very_verbose("Opening shared %s library %s", desc, path); if (!(library = dlopen(path, RTLD_LAZY | RTLD_GLOBAL))) { if (silent && ignorelockingfailure()) log_verbose("Unable to open external %s library %s: %s", desc, path, dlerror()); else log_error("Unable to open external %s library %s: %s", desc, path, dlerror()); } return library; }