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/*
* Test printstrn/umoven.
*
* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2017-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "scno.h"
#include "test_ucopy.h"
static const char *errstr;
static void add_key(const char *addr, const unsigned int len)
{
errstr = sprintrc(syscall(__NR_add_key, 0, 0, addr, len, -1));
}
static void
test_printstrn_at(char *const p, const unsigned int test_max)
{
for (unsigned int i = 0; i <= test_max; ++i) {
add_key(p + (test_max - i), i);
printf("add_key(NULL, NULL, \"%.*s\", %u"
", KEY_SPEC_THREAD_KEYRING) = %s\n",
(int) i, p + (test_max - i), i, errstr);
}
}
static void
test_efault(const unsigned int test_max)
{
char *p = tail_alloc(test_max);
memset(p, '/', test_max);
for (unsigned int i = 0; i <= test_max; ++i) {
for (unsigned int j = 1; j <= sizeof(long); ++j) {
add_key(p + (test_max - i), i + j);
printf("add_key(NULL, NULL, %p, %u"
", KEY_SPEC_THREAD_KEYRING) = %s\n",
p + (test_max - i), i + j, errstr);
}
}
}
static void
test_print_memory(char *const p, const unsigned int test_max)
{
add_key(p, test_max);
printf("add_key(NULL, NULL, ");
print_quoted_memory(p, test_max);
printf(", %u, KEY_SPEC_THREAD_KEYRING) = %s\n", test_max, errstr);
}
void
test_printstrn(const unsigned int test_max)
{
/*
* abcdefgh|
* abcdefg|h
* abcdef|gh
* abcde|fgh
* abcd|efgh
* abc|defgh
* ab|cdefgh
* a|bcdefgh
* |abcdefgh
*/
const unsigned int page_size = get_page_size();
char *p = tail_alloc(test_max + page_size);
fill_memory_ex(p, test_max + page_size, 'a', 'z' - 'a' + 1);
for (unsigned int i = 1; i <= sizeof(long); ++i)
test_printstrn_at(p + i, test_max);
for (unsigned int i = 0; i < sizeof(long); ++i)
test_printstrn_at(p + page_size - i, test_max);
test_efault(test_max);
fill_memory_ex(p, test_max + page_size, 0x00, 0xFF);
/* Test corner cases when octal quoting goes before digit */
for (unsigned int i = 0; i < 11; ++i)
p[2 + 3 * i] = '0' + i - 1;
test_print_memory(p, test_max);
}
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