1/*
2 * Test printstrn/umoven.
3 *
4 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "tests.h"
31
32#include <stdio.h>
33#include <string.h>
34#include <unistd.h>
35#include <asm/unistd.h>
36
37#include "scno.h"
38#include "test_ucopy.h"
39
40static const char *errstr;
41
42static void add_key(const char *addr, const unsigned int len)
43{
44	errstr = sprintrc(syscall(__NR_add_key, 0, 0, addr, len, -1));
45}
46
47static void
48test_printstrn_at(char *const p, const unsigned int test_max)
49{
50	unsigned int i;
51
52	for (i = 0; i <= test_max; ++i) {
53		add_key(p + (test_max - i), i);
54		printf("add_key(NULL, NULL, \"%.*s\", %u"
55		       ", KEY_SPEC_THREAD_KEYRING) = %s\n",
56		       (int) i, p + (test_max - i), i, errstr);
57	}
58}
59
60static void
61test_efault(const unsigned int test_max)
62{
63	char *p = tail_alloc(test_max);
64	memset(p, '/', test_max);
65	unsigned int i;
66
67	for (i = 0; i <= test_max; ++i) {
68		unsigned int j;
69		for (j = 1; j <= sizeof(long); ++j) {
70			add_key(p + (test_max - i), i + j);
71			printf("add_key(NULL, NULL, %p, %u"
72			       ", KEY_SPEC_THREAD_KEYRING) = %s\n",
73			       p + (test_max - i), i + j, errstr);
74		}
75	}
76}
77
78void
79test_printstrn(const unsigned int test_max)
80{
81	/*
82	 * abcdefgh|
83	 * abcdefg|h
84	 * abcdef|gh
85	 * abcde|fgh
86	 * abcd|efgh
87	 * abc|defgh
88	 * ab|cdefgh
89	 * a|bcdefgh
90	 * |abcdefgh
91	 */
92	const unsigned int page_size = get_page_size();
93	char *p = tail_alloc(test_max + page_size);
94	fill_memory_ex(p, test_max + page_size, 'a', 'z' - 'a' + 1);
95
96	unsigned int i;
97	for (i = 1; i <= sizeof(long); ++i)
98		test_printstrn_at(p + i, test_max);
99	for (i = 0; i < sizeof(long); ++i)
100		test_printstrn_at(p + page_size - i, test_max);
101	test_efault(test_max);
102}
103