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Diffstat (limited to 'tests/all-symbols-test.c')
| -rw-r--r-- | tests/all-symbols-test.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/tests/all-symbols-test.c b/tests/all-symbols-test.c new file mode 100644 index 0000000..10c7fe2 --- /dev/null +++ b/tests/all-symbols-test.c @@ -0,0 +1,177 @@ +/* + * Test utility checking symbol versions in libcryptsetup. + * + * Copyright (C) 2021-2023 Red Hat, Inc. All rights reserved. + * + * This file is free software; you can redistribute it and/or + * modify it 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. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <dlfcn.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define UNUSED(expr) do { (void)(expr); } while (0) + +static int _debug; +static const char *libfile = "libcryptsetup.so.12"; + +#define LOG_MAX_LEN 256 + +#define LOG_DEBUG 1 +#define LOG_NORMAL 2 +#define LOG_ERROR 3 + +__attribute__((format(printf, 2, 3))) +static void test_logf(int level, const char *format, ...) +{ + va_list argp; + char target[LOG_MAX_LEN + 2]; + int len; + + va_start(argp, format); + + len = vsnprintf(&target[0], LOG_MAX_LEN, format, argp); + if (len > 0 && len < LOG_MAX_LEN) { + switch (level) { + case LOG_DEBUG: + if (!_debug) + break; + /* fall through */ + case LOG_NORMAL: + fprintf(stdout, "%s", target); + break; + case LOG_ERROR: + fflush(stdout); + strcat(target, "\n"); + fprintf(stderr, "%s", target); + } + } + + va_end(argp); +} + +#define log_dbg(x...) test_logf(LOG_DEBUG, x) +#define log_std(x...) test_logf(LOG_NORMAL, x) +#define log_err(x...) test_logf(LOG_ERROR, x) + +static int check_dlvsym(void *h, const char *symbol, const char *version) +{ +#ifdef HAVE_DLVSYM + void *sym; + char *err; + + log_dbg("Checking %s@%s...", symbol, version); + sym = dlvsym(h, symbol, version); + UNUSED(sym); + err = dlerror(); + + if (err) { + log_err("%s.", err); + return 1; + } + + log_dbg("OK\n"); +#endif + return 0; +} + +static int check_dlsym(void *h, const char *symbol) +{ + void *sym; + char *err; + + log_dbg("Checking %s...", symbol); + sym = dlsym(h, symbol); + UNUSED(sym); + err = dlerror(); + + if (err) { + log_err("%s", err); + return 1; + } + + log_dbg("OK\n"); + return 0; +} + +static int check_all_symbols(void *h) +{ + unsigned scount = 0; + +#define CHECK_SYMBOL(SYM, VER) \ +do { \ + if (check_dlvsym(h, #SYM, #VER)) \ + return 1; \ + if (check_dlsym(h, #SYM)) \ + return 1; \ + scount++; \ +} while (0); + +#include "test-symbols-list.h" +#undef CHECK_SYMBOL + + if (!scount) { + log_err("test-symbols-list.h file is probably empty."); + return 1; + } + + log_std("Performed %u symbol checks in total.\n", scount); + + return 0; +} + +static void usage(const char *app) +{ + log_std("usage:\n\t%s [-v|--verbose|--debug] [optional path to library so file]\n", app); + + exit(EXIT_FAILURE); +} + +int main(int argc, char **argv) +{ + int i, r; + void *h; + + for (i = 1; i < argc; i++) { + if (*argv[i] != '-') + libfile = argv[i]; + else if (!strcmp("-v", argv[i]) || !strcmp("--verbose", argv[i]) || + !strcmp("--debug", argv[i])) + _debug = 1; + else if (!strcmp("-h", argv[i]) || !strcmp("--help", argv[i])) + usage(argv[0]); + } + + log_std("Checking dlopen(%s)...", libfile); + + h = dlopen(libfile, RTLD_NOW); + if (!h) { + log_err("dlopen(): %s.", dlerror()); + return EXIT_FAILURE; + } + dlerror(); + log_std("OK\n"); + + r = check_all_symbols(h); + + if (dlclose(h)) { + log_err("Failed to dlclose %s: %s.", libfile, dlerror()); + return EXIT_FAILURE; + } + + return r ? EXIT_FAILURE : EXIT_SUCCESS; +} |