| /* |
| * 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 <alexey.kodanev@oracle.com> |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "test.h" |
| #include "tst_module.h" |
| #include "safe_macros.h" |
| #include "safe_stdio.h" |
| |
| #include "ltp_acpi.h" |
| |
| char *TCID = "ltp_acpi"; |
| int TST_TOTAL = ACPI_TC_NUM; |
| |
| static const char dev_result[] = "/sys/devices/" ACPI_TEST_NAME "/result"; |
| static const char dev_path[] = "/sys/devices/" ACPI_TEST_NAME "/path"; |
| static const char dev_str[] = "/sys/devices/" ACPI_TEST_NAME "/str"; |
| static const char dev_tcase[] = "/sys/devices/" ACPI_TEST_NAME "/tcase"; |
| static const char module_name[] = "ltp_acpi_cmds.ko"; |
| static int module_loaded; |
| |
| static void cleanup(void) |
| { |
| if (module_loaded) |
| tst_module_unload(NULL, module_name); |
| } |
| |
| static int read_sysfs_file(const char *name, char *buf, int size) |
| { |
| FILE *f = SAFE_FOPEN(cleanup, name, "r"); |
| char *res = fgets(buf, size, f); |
| SAFE_FCLOSE(cleanup, f); |
| return (res) ? 0 : 1; |
| } |
| |
| static int tc_acpi_str(void) |
| { |
| int res, ret = 0; |
| char descr[4096], sysfs_path[4096]; |
| |
| int not_kver_3_7 = tst_kvercmp(3, 7, 0) < 0; |
| |
| while (1) { |
| |
| SAFE_FILE_PRINTF(cleanup, dev_tcase, "%d", ACPI_TRAVERSE); |
| SAFE_FILE_SCANF(cleanup, dev_result, "%d", &res); |
| if (res) |
| return TFAIL; |
| /* |
| * if device has _STR object, we should get |
| * a valid string from 'str' sysfs file and then can |
| * find it in sysfs. |
| */ |
| if (read_sysfs_file(dev_str, descr, 4096)) { |
| /* None of left devices has _STR */ |
| break; |
| } |
| tst_resm(TINFO, "read description %s", descr); |
| |
| /* device's sysfs path */ |
| strcpy(sysfs_path, "/sys"); |
| if (read_sysfs_file(dev_path, sysfs_path + 4, 4092)) { |
| /* |
| * Device doesn't have sysfs entry |
| * continue, because others might have it |
| */ |
| continue; |
| } |
| |
| /* |
| * Find device description in sysfs. |
| * |
| * New sysfs interface to export device description |
| * implemented since Linux 3.7 |
| */ |
| if (not_kver_3_7) { |
| tst_resm(TINFO, "sysfs _STR check required Linux 3.7+"); |
| ret = TCONF; |
| /* continue, we can still traverse ACPI devices */ |
| continue; |
| } |
| |
| strcat(sysfs_path, "/description"); |
| if (access(sysfs_path, R_OK)) { |
| tst_resm(TINFO, "can't find description file '%s'", |
| sysfs_path); |
| return TFAIL; |
| } |
| tst_resm(TINFO, "found description file '%s'", sysfs_path); |
| |
| char sysfs_descr[4096]; |
| if (read_sysfs_file(sysfs_path, sysfs_descr, 4096)) |
| return TFAIL; |
| |
| /* |
| * Compare sysfs file and description from test driver |
| */ |
| int res = strncmp(descr, sysfs_descr, strlen(descr)); |
| |
| ret |= res ? TFAIL : TPASS; |
| } |
| |
| return ret; |
| } |
| |
| static void test_run(void) |
| { |
| int i, res; |
| |
| for (i = 0; i < TST_TOTAL; ++i) { |
| |
| if (i == ACPI_TRAVERSE) { |
| res = tc_acpi_str(); |
| } else { |
| SAFE_FILE_PRINTF(cleanup, dev_tcase, "%d", i); |
| SAFE_FILE_SCANF(cleanup, dev_result, "%d", &res); |
| res = res ? TFAIL : TPASS; |
| } |
| |
| tst_resm(res, "Test-case '%d'", i); |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| const char *msg; |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| tst_require_root(NULL); |
| |
| if (tst_kvercmp(2, 6, 0) < 0) { |
| tst_brkm(TCONF, NULL, |
| "Test must be run with kernel 2.6 or newer"); |
| } |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| tst_module_load(NULL, module_name, NULL); |
| module_loaded = 1; |
| |
| test_run(); |
| |
| cleanup(); |
| |
| tst_exit(); |
| } |