There are new functions: tst_module_exists(), tst_module_load() and tst_module_unload(). These functions help to load and unload kernel modules in the tests.
Signed-off-by: Alexey Kodanev <[email protected]> --- include/tst_module.h | 72 +++++++++++++++++++++++++++++++++ lib/tst_module.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 179 insertions(+), 0 deletions(-) create mode 100644 include/tst_module.h create mode 100644 lib/tst_module.c diff --git a/include/tst_module.h b/include/tst_module.h new file mode 100644 index 0000000..0eb7dd5 --- /dev/null +++ b/include/tst_module.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Author: + * Alexey Kodanev <[email protected]> + * + * These functions help to load and unload kernel modules in the tests. + * + * tst_module_load and tst_module_unload functions already include + * tst_module_exists function, which is checking the following possible + * module's locations: + * + * 1. Current working directory + * + * 2. LTP installation path (using env LTPROOT, which is usally /opt/ltp) + * + * 3. If tmp directory created, it'll look at the test start working directory + * + */ + +#ifndef TST_MODULE +#define TST_MODULE + +/* + * Check module existence. + * + * @res_path: if this pointer isn't NULL, found module's path will be written + * to it. + * + * In case of failure, test'll call cleanup_fn and exit with TCONF return value. + */ +void tst_module_exist(void (*cleanup_fn)(void), const char *mod_name, + char *res_path, size_t max_path); + +/* + * Load a module using insmod program. + * + * @mod_opt: pointer to a character string containing additional module's + * params. This character string can contain a format that follows the same + * specifications as format in printf. If this pointer is NULL, it will be + * ignored. + * + * This function may expect additional arguments to replace a format specifier + * in the mod_opt string. + * + * In case of insmod failure, test will call cleanup_fn and exit with TBROK + * return value. + */ +void tst_module_load(void (*cleanup_fn)(void), + const char *mod_name, char *mod_opt, ...); + +/* + * Unload a module using rmmod program. In case of failure, test will call + * cleanup_fn and exit with TBROK return value. + */ +void tst_module_unload(void (*cleanup_fn)(void), const char *mod_name); + +#endif /* TST_MODULE */ diff --git a/lib/tst_module.c b/lib/tst_module.c new file mode 100644 index 0000000..0c6062f --- /dev/null +++ b/lib/tst_module.c @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Author: Alexey Kodanev <[email protected]> + * + */ + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> + +#include "test.h" +#include "usctest.h" +#include "tst_module.h" + +/* declared in tst_tmpdir.c */ +const char *tst_get_startwd(void); + +void tst_module_exists(void (*cleanup_fn)(void), + const char *mod_name, char *res_path, size_t max_path) +{ + /* check current working directory */ + if (access(mod_name, F_OK) == 0) { + if (res_path != NULL) + snprintf(res_path, max_path, "%s", mod_name); + return; + } + + int err = -1; + char buf[PATH_MAX]; + /* check LTP installation path */ + const char *ltproot = getenv("LTPROOT"); + if (ltproot != NULL) { + snprintf(buf, PATH_MAX, "%s/testcases/bin/%s", + ltproot, mod_name); + err = access(buf, F_OK); + } + /* check start working directory */ + if (err == -1 && tst_tmpdir_created()) { + snprintf(buf, PATH_MAX, "%s/%s", tst_get_startwd(), + mod_name); + err = access(buf, F_OK); + } + + if (err == 0) { + if (res_path != NULL) + snprintf(res_path, max_path, "%s", buf); + } else { + tst_brkm(TCONF, cleanup_fn, "Failed to find module '%s'", + mod_name); + } +} + +void tst_module_load(void (*cleanup_fn)(void), + const char *mod_name, char *mod_opt, ...) +{ + char mod_path[PATH_MAX]; + + tst_module_exists(cleanup_fn, mod_name, mod_path, PATH_MAX); + + char params[PATH_MAX]; + params[0] = '\0'; + + if (mod_opt != NULL) { + va_list ap; + va_start(ap, mod_opt); + vsnprintf(params, PATH_MAX, mod_opt, ap); + va_end(ap); + } + + char cmd[strlen(mod_path) + strlen(params) + 9]; + snprintf(cmd, sizeof(cmd), "insmod %s %s", mod_path, params); + + if (system(cmd) != 0) { + tst_brkm(TBROK, cleanup_fn, "Failed to load module '%s'", + mod_name); + } +} + +void tst_module_unload(void (*cleanup_fn)(void), const char *mod_name) +{ + char mod_path[PATH_MAX]; + + tst_module_exists(cleanup_fn, mod_name, mod_path, PATH_MAX); + + char cmd[strlen(mod_path) + 7]; + snprintf(cmd, sizeof(cmd), "rmmod %s", mod_path); + if (system(cmd) != 0) { + tst_brkm(TBROK, cleanup_fn, "Failed to unload module '%s'", + mod_name); + } +} -- 1.7.1 ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
