79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
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* Copyright (c) 2018 Xiao Yang <yangx.jy@cn.fujitsu.com>
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*/
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/*
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* AUTHOR: Madhu T L <madhu.tarikere@wipro.com>
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*
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* DESCRIPTION
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* Verify that, delete_module(2) returns -1 and sets errno to EWOULDBLOCK,
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* if tried to remove a module while other modules depend on this module.
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*/
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#include <errno.h>
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#include "tst_test.h"
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#include "tst_module.h"
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#include "lapi/syscalls.h"
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#define DUMMY_MOD "dummy_del_mod"
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#define DUMMY_MOD_KO "dummy_del_mod.ko"
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#define DUMMY_MOD_DEP_KO "dummy_del_mod_dep.ko"
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static int dummy_mod_loaded;
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static int dummy_mod_dep_loaded;
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static void do_delete_module(void)
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{
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TEST(tst_syscall(__NR_delete_module, DUMMY_MOD, 0));
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if (TST_RET < 0) {
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if (TST_ERR == EWOULDBLOCK) {
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tst_res(TPASS | TTERRNO,
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"delete_module() failed as expected");
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} else {
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tst_res(TFAIL | TTERRNO, "delete_module() failed "
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"unexpectedly; expected: %s",
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tst_strerrno(EWOULDBLOCK));
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}
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} else {
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tst_res(TFAIL, "delete_module() succeeded unexpectedly");
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dummy_mod_loaded = 0;
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/*
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* insmod DUMMY_MOD_KO again in case running
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* with -i option
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*/
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tst_module_load(DUMMY_MOD_KO, NULL);
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dummy_mod_loaded = 1;
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}
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}
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static void setup(void)
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{
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/* Load first kernel module */
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tst_module_load(DUMMY_MOD_KO, NULL);
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dummy_mod_loaded = 1;
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/* Load dependant kernel module */
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tst_module_load(DUMMY_MOD_DEP_KO, NULL);
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dummy_mod_dep_loaded = 1;
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}
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static void cleanup(void)
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{
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/* Unload dependent kernel module */
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if (dummy_mod_dep_loaded == 1)
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tst_module_unload(DUMMY_MOD_DEP_KO);
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/* Unload first kernel module */
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if (dummy_mod_loaded == 1)
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tst_module_unload(DUMMY_MOD_KO);
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}
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static struct tst_test test = {
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.needs_root = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test_all = do_delete_module,
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};
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