99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
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*/
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/*\
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* [Description]
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*
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* Basic init_module() failure tests.
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*
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* [Algorithm]
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*
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* Tests various failure scenarios for init_module().
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*/
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#include <linux/capability.h>
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#include <errno.h>
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#include "lapi/init_module.h"
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#include "tst_module.h"
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#include "tst_capability.h"
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#define MODULE_NAME "init_module.ko"
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static unsigned long size, zero_size;
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static void *buf, *faulty_buf, *null_buf;
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static struct tst_cap cap_req = TST_CAP(TST_CAP_REQ, CAP_SYS_MODULE);
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static struct tst_cap cap_drop = TST_CAP(TST_CAP_DROP, CAP_SYS_MODULE);
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static struct tcase {
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const char *name;
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void **buf;
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unsigned long *size;
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const char *param;
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int cap;
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int exp_errno;
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} tcases[] = {
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{"NULL-buffer", &null_buf, &size, "", 0, EFAULT},
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{"faulty-buffer", &faulty_buf, &size, "", 0, EFAULT},
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{"null-param", &buf, &size, NULL, 0, EFAULT},
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{"zero-size", &buf, &zero_size, "", 0, ENOEXEC},
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{"invalid_param", &buf, &size, "status=invalid", 0, EINVAL},
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{"no-perm", &buf, &size, "", 1, EPERM},
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{"module-exists", &buf, &size, "", 0, EEXIST},
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};
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static void setup(void)
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{
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struct stat sb;
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int fd;
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tst_module_exists(MODULE_NAME, NULL);
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fd = SAFE_OPEN(MODULE_NAME, O_RDONLY|O_CLOEXEC);
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SAFE_FSTAT(fd, &sb);
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size = sb.st_size;
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buf = SAFE_MMAP(0, size, PROT_READ|PROT_EXEC, MAP_PRIVATE, fd, 0);
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SAFE_CLOSE(fd);
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faulty_buf = tst_get_bad_addr(NULL);
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}
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static void run(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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if (tc->cap)
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tst_cap_action(&cap_drop);
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/* Insert module twice */
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if (tc->exp_errno == EEXIST)
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tst_module_load(MODULE_NAME, NULL);
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TST_EXP_FAIL(init_module(*tc->buf, *tc->size, tc->param), tc->exp_errno,
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"TestName: %s", tc->name);
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if (tc->exp_errno == EEXIST)
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tst_module_unload(MODULE_NAME);
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if (!TST_PASS && !TST_RET)
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tst_module_unload(MODULE_NAME);
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if (tc->cap)
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tst_cap_action(&cap_req);
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}
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static void cleanup(void)
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{
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munmap(buf, size);
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}
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static struct tst_test test = {
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.test = run,
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.tcnt = ARRAY_SIZE(tcases),
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.setup = setup,
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.cleanup = cleanup,
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.needs_root = 1,
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};
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