| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * 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. |
| * |
| * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| /* |
| * AUTHOR: Madhu T L <madhu.tarikere@wipro.com> |
| * |
| * DESCRIPTION |
| * Verify that, delete_module(2) returns -1 and sets errno to EWOULDBLOCK, |
| * if tried to remove a module while other modules depend on this module. |
| * |
| */ |
| |
| #include <errno.h> |
| #include "test.h" |
| #include "old_module.h" |
| #include "safe_macros.h" |
| #include "lapi/syscalls.h" |
| |
| #define DUMMY_MOD "dummy_del_mod" |
| #define DUMMY_MOD_KO "dummy_del_mod.ko" |
| #define DUMMY_MOD_DEP "dummy_del_mod_dep" |
| #define DUMMY_MOD_DEP_KO "dummy_del_mod_dep.ko" |
| |
| static int dummy_mod_loaded; |
| static int dummy_mod_dep_loaded; |
| |
| char *TCID = "delete_module03"; |
| |
| int TST_TOTAL = 1; |
| |
| static void setup(); |
| static void cleanup(void); |
| |
| int main(int argc, char **argv) |
| { |
| int lc; |
| |
| tst_parse_opts(argc, argv, NULL, NULL); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| TEST(ltp_syscall(__NR_delete_module, DUMMY_MOD, 0)); |
| |
| if (TEST_RETURN < 0) { |
| switch (errno) { |
| case EWOULDBLOCK: |
| tst_resm(TPASS | TTERRNO, |
| "delete_module() failed as expected"); |
| break; |
| default: |
| tst_resm(TFAIL | TTERRNO, "delete_module() " |
| "failed unexpectedly; expected: " |
| "%d - %s", EWOULDBLOCK, |
| strerror(EWOULDBLOCK)); |
| break; |
| } |
| } else { |
| tst_resm(TFAIL, "delete_module()" |
| "succeeded unexpectedly"); |
| dummy_mod_loaded = 0; |
| /* |
| * insmod DUMMY_MOD_KO again in case running |
| * with -i option |
| */ |
| tst_module_load(cleanup, DUMMY_MOD_KO, NULL); |
| dummy_mod_loaded = 1; |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| |
| } |
| |
| static void setup(void) |
| { |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(); |
| |
| /* Load first kernel module */ |
| tst_module_load(cleanup, DUMMY_MOD_KO, NULL); |
| dummy_mod_loaded = 1; |
| |
| /* Load dependant kernel module */ |
| tst_module_load(cleanup, DUMMY_MOD_DEP_KO, NULL); |
| dummy_mod_dep_loaded = 1; |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| /* Unload dependent kernel module */ |
| if (dummy_mod_dep_loaded == 1) |
| tst_module_unload(NULL, DUMMY_MOD_DEP_KO); |
| |
| /* Unload first kernel module */ |
| if (dummy_mod_loaded == 1) |
| tst_module_unload(NULL, DUMMY_MOD_KO); |
| } |