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lib/misc/sharedlib.c
47 строк
1 KB
Zdenek Kabelac
sharedlib: guard against NULL libname in get_shared_library_path
11 май 2026, 11:18
11 май 2026, 11:18
62b2279
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/* * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "lib/misc/lib.h" #include "sharedlib.h" #include "lib/config/config.h" #include "lib/commands/toolcontext.h" #include <limits.h> #include <sys/stat.h> #include <dlfcn.h> void get_shared_library_path(struct cmd_context *cmd, const char *libname, char *path, size_t path_len) { struct stat info; if (!path_len) return; if (!libname || !*libname) { path[0] = '\0'; return; } /* If libname doesn't begin with '/' then use lib_dir/libname, * if present */ if (libname[0] == '/' || (!cmd->lib_dir && !(cmd->lib_dir = find_config_tree_str(cmd, global_library_dir_CFG, NULL))) || (dm_snprintf(path, path_len, "%s/%s", cmd->lib_dir, libname) == -1) || stat(path, &info) == -1) { dm_strncpy(path, libname, path_len); } }