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108 lines
3.6 KiB
108 lines
3.6 KiB
4 months ago
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/*
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* Check decoding of init_module syscall.
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*
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* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
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* Copyright (c) 2016-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <asm/unistd.h>
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#if defined(__NR_init_module)
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# include <stdio.h>
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# include <unistd.h>
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# include "init_delete_module.h"
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int
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main(void)
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{
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static const kernel_ulong_t bogus_addr =
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(kernel_ulong_t) 0xfffffeedfffffaceULL;
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static const kernel_ulong_t bogus_len =
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(kernel_ulong_t) 0xfffffca7ffffc0deULL;
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long rc;
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char *bogus_param1 = tail_alloc(PARAM1_LEN);
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char *bogus_param2 = tail_alloc(PARAM2_LEN);
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const char *errstr;
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fill_memory_ex(bogus_param1, PARAM1_LEN, PARAM1_BASE, PARAM1_LEN);
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fill_memory_ex(bogus_param2, PARAM2_LEN, PARAM2_BASE, PARAM2_LEN);
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rc = syscall(__NR_init_module, NULL, F8ILL_KULONG_MASK, NULL);
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printf("init_module(NULL, %llu, NULL) = %s\n",
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(unsigned long long) F8ILL_KULONG_MASK, sprintrc(rc));
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rc = syscall(__NR_init_module, bogus_addr, 0, bogus_param1);
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errstr = sprintrc(rc);
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printf("init_module(%#llx, 0, \"", (unsigned long long) bogus_addr);
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print_str(PARAM1_BASE, MAX_STRLEN, false);
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printf("\"...) = %s\n", errstr);
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bogus_param1[PARAM1_LEN - 1] = '\0';
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rc = syscall(__NR_init_module, bogus_addr, 0, bogus_param1);
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errstr = sprintrc(rc);
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printf("init_module(%#llx, 0, \"", (unsigned long long) bogus_addr);
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print_str(PARAM1_BASE, MAX_STRLEN, false);
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printf("\") = %s\n", errstr);
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rc = syscall(__NR_init_module, bogus_addr, bogus_len,
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bogus_param2 + PARAM2_LEN);
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printf("init_module(%#llx, %llu, %p) = %s\n",
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(unsigned long long) bogus_addr, (unsigned long long) bogus_len,
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bogus_param2 + PARAM2_LEN, sprintrc(rc));
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rc = syscall(__NR_init_module, NULL, bogus_len, bogus_param2);
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printf("init_module(NULL, %llu, %p) = %s\n",
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(unsigned long long) bogus_len, bogus_param2, sprintrc(rc));
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bogus_param2[PARAM2_LEN - 1] = '\0';
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rc = syscall(__NR_init_module, NULL, bogus_len, bogus_param2);
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errstr = sprintrc(rc);
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printf("init_module(NULL, %llu, \"", (unsigned long long) bogus_len);
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print_str(PARAM2_BASE, PARAM2_LEN - 1, true);
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printf("\") = %s\n", errstr);
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_init_module");
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#endif
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