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/**********************************************************************
Copyright(c) 2011-2015 Intel Corporation All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**********************************************************************/
#include<stdio.h>
#include<stdint.h>
#include<string.h>
#include<stdlib.h>
#include "raid.h"
#include "types.h"
#define TEST_SOURCES 16
#define TEST_LEN 1024
#define TEST_MEM ((TEST_SOURCES + 2)*(TEST_LEN))
#ifndef TEST_SEED
# define TEST_SEED 0x1234
#endif
int ref_multi_pq(int vects, int len, void **array)
{
int i, j;
unsigned char p, q, s;
unsigned char **src = (unsigned char **)array;
for (i = 0; i < len; i++) {
q = p = src[vects - 3][i];
for (j = vects - 4; j >= 0; j--) {
p ^= s = src[j][i];
q = s ^ ((q << 1) ^ ((q & 0x80) ? 0x1d : 0)); // mult by GF{2}
}
src[vects - 2][i] = p; // second to last pointer is p
src[vects - 1][i] = q; // last pointer is q
}
return 0;
}
// Generates pseudo-random data
void rand_buffer(unsigned char *buf, long buffer_size)
{
long i;
for (i = 0; i < buffer_size; i++)
buf[i] = rand();
}
int main(int argc, char *argv[])
{
int i, j, k, ret, fail = 0;
void *buffs[TEST_SOURCES + 2];
char c;
char *tmp_buf[TEST_SOURCES + 2];
int serr, lerr;
printf("Test pq_check_test %d sources X %d bytes\n", TEST_SOURCES, TEST_LEN);
srand(TEST_SEED);
// Allocate the arrays
for (i = 0; i < TEST_SOURCES + 2; i++) {
void *buf;
if (posix_memalign(&buf, 16, TEST_LEN)) {
printf("alloc error: Fail");
return 1;
}
buffs[i] = buf;
}
// Test of all zeros
for (i = 0; i < TEST_SOURCES + 2; i++)
memset(buffs[i], 0, TEST_LEN);
ref_multi_pq(TEST_SOURCES + 2, TEST_LEN, buffs);
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret != 0) {
fail++;
printf("\nfail zero test %d\n", ret);
}
((char *)(buffs[0]))[TEST_LEN - 2] = 0x7; // corrupt buffer
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret == 0) {
fail++;
printf("\nfail corrupt buffer test %d\n", ret);
}
((char *)(buffs[0]))[TEST_LEN - 2] = 0; // un-corrupt buffer
// Test corrupted buffer any location on all sources
for (j = 0; j < TEST_SOURCES + 2; j++) {
for (i = TEST_LEN - 1; i >= 0; i--) {
((char *)buffs[j])[i] = 0x5; // corrupt buffer
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret == 0) {
fail++;
printf("\nfail corrupt zero buffer test j=%d, i=%d\n", j, i);
return 1;
}
((char *)buffs[j])[i] = 0; // un-corrupt buffer
}
putchar('.');
}
// Test rand1
for (i = 0; i < TEST_SOURCES + 2; i++)
rand_buffer(buffs[i], TEST_LEN);
ref_multi_pq(TEST_SOURCES + 2, TEST_LEN, buffs);
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret != 0) {
fail++;
printf("fail first rand test %d\n", ret);
}
c = ((char *)(buffs[0]))[TEST_LEN - 2];
((char *)(buffs[0]))[TEST_LEN - 2] = c ^ 0x1;
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret == 0) {
fail++;
printf("\nFail corrupt buffer test, passed when should have failed\n");
}
((char *)(buffs[0]))[TEST_LEN - 2] = c; // un-corrupt buffer
// Test corrupted buffer any location on all sources w/ random data
for (j = 0; j < TEST_SOURCES + 2; j++) {
for (i = TEST_LEN - 1; i >= 0; i--) {
// Check it still passes
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret != 0) { // should pass
fail++;
printf
("\nFail rand test with un-corrupted buffer j=%d, i=%d\n",
j, i);
return 1;
}
c = ((char *)buffs[j])[i];
((char *)buffs[j])[i] = c ^ 1; // corrupt buffer
ret = pq_check(TEST_SOURCES + 2, TEST_LEN, buffs);
if (ret == 0) { // Check it now fails
fail++;
printf("\nfail corrupt buffer test j=%d, i=%d\n", j, i);
return 1;
}
((char *)buffs[j])[i] = c; // un-corrupt buffer
}
putchar('.');
}
// Test various number of sources, full length
for (j = 4; j <= TEST_SOURCES + 2; j++) {
// New random data
for (i = 0; i < j; i++)
rand_buffer(buffs[i], TEST_LEN);
// Generate p,q parity for this number of sources
ref_multi_pq(j, TEST_LEN, buffs);
// Set errors up in each source and len position
for (i = 0; i < j; i++) {
for (k = 0; k < TEST_LEN; k++) {
// See if it still passes
ret = pq_check(j, TEST_LEN, buffs);
if (ret != 0) { // Should pass
printf("\nfail rand fixed len test %d sources\n", j);
fail++;
return 1;
}
c = ((char *)buffs[i])[k];
((char *)buffs[i])[k] = c ^ 1; // corrupt buffer
ret = pq_check(j, TEST_LEN, buffs);
if (ret == 0) { // Should fail
printf
("\nfail rand fixed len test corrupted buffer %d sources\n",
j);
fail++;
return 1;
}
((char *)buffs[i])[k] = c; // un-corrupt buffer
}
}
putchar('.');
}
fflush(0);
// Test various number of sources and len
k = 16;
while (k <= TEST_LEN) {
char *tmp;
for (j = 4; j <= TEST_SOURCES + 2; j++) {
for (i = 0; i < j; i++)
rand_buffer(buffs[i], k);
// Generate p,q parity for this number of sources
ref_multi_pq(j, k, buffs);
// Inject errors at various source and len positions
for (lerr = 0; lerr < k; lerr++) {
for (serr = 0; serr < j; serr++) {
// See if it still passes
ret = pq_check(j, k, buffs);
if (ret != 0) { // Should pass
printf
("\nfail rand var src, len test %d sources, len=%d\n",
j, k);
fail++;
return 1;
}
tmp = (char *)buffs[serr];
c = tmp[lerr];
((char *)buffs[serr])[lerr] = c ^ 1; // corrupt buffer
ret = pq_check(j, k, buffs);
if (ret == 0) { // Should fail
printf
("\nfail rand var src, len test corrupted buffer "
"%d sources, len=%d, ret=%d\n", j, k,
ret);
fail++;
return 1;
}
((char *)buffs[serr])[lerr] = c; // un-corrupt buffer
}
}
putchar('.');
fflush(0);
}
k += 16;
}
// Test at the end of buffer
for (i = 0; i < TEST_LEN; i += 16) {
for (j = 0; j < TEST_SOURCES + 2; j++) {
rand_buffer(buffs[j], TEST_LEN - i);
tmp_buf[j] = (char *)buffs[j] + i;
}
pq_gen_base(TEST_SOURCES + 2, TEST_LEN - i, (void *)tmp_buf);
// Test good data
ret = pq_check(TEST_SOURCES + 2, TEST_LEN - i, (void *)tmp_buf);
if (ret != 0) {
printf("fail end test - offset: %d, len: %d\n", i, TEST_LEN - i);
fail++;
return 1;
}
// Test bad data
for (serr = 0; serr < TEST_SOURCES + 2; serr++) {
for (lerr = 0; lerr < (TEST_LEN - i); lerr++) {
c = tmp_buf[serr][lerr];
tmp_buf[serr][lerr] = c ^ 1;
ret =
pq_check(TEST_SOURCES + 2, TEST_LEN - i, (void *)tmp_buf);
if (ret == 0) {
printf("fail end test corrupted buffer - "
"offset: %d, len: %d, ret: %d\n", i,
TEST_LEN - i, ret);
fail++;
return 1;
}
tmp_buf[serr][lerr] = c;
}
}
putchar('.');
fflush(0);
}
if (fail == 0)
printf("Pass\n");
return fail;
}
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