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 | 70 +++++++++++++++++++++++++++++++++ lib/tst_module.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 175 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..7ff2c7e --- /dev/null +++ b/include/tst_module.h @@ -0,0 +1,70 @@ +/* + * 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 function already includes 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 usually /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. + * + * @mod_name: module's file name. + * @mod_path: if it is not NULL, then tst_module_exists places the found + * module's path into the location pointed to by *mod_path. It must be freed + * with free() when it is no longer needed. + * + * 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 **mod_path); + +/* + * Load a module using insmod program. + * @mod_name: module's file name. + * @argv: an array of pointers to null-terminated strings that represent the + * additional parameters to the module. The array of pointers must be + * terminated by a NULL pointer. If argv points to NULL, it will be ignored. + * + * 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 *const argv[]); + +/* + * @mod_name: can be module name or module's file name. + * 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..373edb6 --- /dev/null +++ b/lib/tst_module.c @@ -0,0 +1,105 @@ +/* + * 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]> + * + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include "test.h" +#include "ltp_priv.h" +#include "tst_module.h" + +void tst_module_exists(void (cleanup_fn)(void), + const char *mod_name, char **mod_path) +{ + /* check current working directory */ + if (access(mod_name, F_OK) == 0) { + if (mod_path != NULL) + *mod_path = strdup(mod_name); + return; + } + char *buf = NULL; + int err = -1; + /* check LTP installation path */ + const char *ltproot = getenv("LTPROOT"); + if (ltproot != NULL) { + if (asprintf(&buf, "%s/testcases/bin/%s", + ltproot, mod_name) == -1) { + tst_brkm(TBROK | TERRNO, cleanup_fn, + "asprintf failed at %s:%d", + __FILE__, __LINE__); + } + err = access(buf, F_OK); + } + /* check start working directory */ + if (err == -1 && tst_tmpdir_created()) { + free(buf); + if (asprintf(&buf, "%s/%s", tst_get_startwd(), + mod_name) == -1) { + tst_brkm(TBROK | TERRNO, cleanup_fn, + "asprintf failed at %s:%d", + __FILE__, __LINE__); + } + err = access(buf, F_OK); + } + + if (err != 0) { + free(buf); + tst_brkm(TCONF, cleanup_fn, "Failed to find module '%s'", + mod_name); + } + + if (mod_path != NULL) + *mod_path = buf; + else + free(buf); +} + +void tst_module_load(void (cleanup_fn)(void), + const char *mod_name, char *const argv[]) +{ + char *mod_path = NULL; + tst_module_exists(cleanup_fn, mod_name, &mod_path); + + static int offset = 2; /* command name & module path */ + int size = 0; + while (argv && argv[size]) + ++size; + size += offset; + char *mod_argv[size + 1]; /* + NULL in the end */ + mod_argv[size] = NULL; + mod_argv[0] = "insmod"; + mod_argv[1] = mod_path; + + int i; + for (i = offset; i < size; ++i) + mod_argv[i] = argv[i - offset]; + + tst_run_cmd(cleanup_fn, mod_argv); + free(mod_path); +} + +void tst_module_unload(void (cleanup_fn)(void), const char *mod_name) +{ + char *const argv[] = { "rmmod", mod_name, NULL }; + tst_run_cmd(cleanup_fn, argv); +} -- 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
