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msc.c
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msc.c
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/**
* msc.c - USB Mass Storage Class Verification Tool
*
* Copyright (C) 2009-2016 Felipe Balbi <felipe.balbi@linux.intel.com>
*
* This file is part of the USB Verification Tools Project
*
* USB Tools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public Liicense as published by
* the Free Software Foundation, either version 3 of the license, or
* (at your option) any later version.
*
* USB Tools is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with USB Tools. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <malloc.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <sys/uio.h>
#include <openssl/sha.h>
#define __maybe_unused __attribute__((unused))
#define false 0
#define true !false
static unsigned debug;
/* for measuring throughput */
static struct timespec start;
static struct timespec end;
#define DBG(fmt, args...) \
if (debug) \
printf(fmt, ## args)
#define ERR(fmt, args...) fprintf(stderr, fmt, ## args)
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
struct usb_msc_test {
uint64_t transferred; /* amount of data transferred so far */
uint64_t psize; /* partition size */
uint64_t pempty; /* what needs to be filled up still */
float read_tput; /* read throughput */
float write_tput; /* write throughput */
int fd; /* /dev/sd?? */
int count; /* iteration count */
unsigned sect_size; /* sector size */
unsigned pattern; /* pattern to use */
unsigned size; /* buffer size */
off_t offset; /* current offset */
unsigned char *txbuf; /* send buffer */
unsigned char *rxbuf; /* receive buffer*/
char *output; /* writing to... */
};
enum usb_msc_test_case {
MSC_TEST_SIMPLE = 0, /* simple */
MSC_TEST_1SECT, /* 1 sector at a time */
MSC_TEST_8SECT, /* 8 sectors at a time */
MSC_TEST_32SECT, /* 32 sectors at a time */
MSC_TEST_64SECT, /* 64 sectors at a time */
MSC_TEST_SG_2SECT, /* SG 2 sectors at a time */
MSC_TEST_SG_8SECT, /* SG 8 sectors at a time */
MSC_TEST_SG_32SECT, /* SG 32 sectors at a time */
MSC_TEST_SG_64SECT, /* SG 64 sectors at a time */
MSC_TEST_SG_128SECT, /* SG 128 sectors at a time */
MSC_TEST_READ_PAST_LAST, /* read extends over the last sector */
MSC_TEST_LSEEK_PAST_LAST, /* lseek over the end of the block device */
MSC_TEST_WRITE_PAST_LAST, /* write start over the last sector */
MSC_TEST_SG_RANDOM_READ, /* write, read random SG 2 - 8 sectors */
MSC_TEST_SG_RANDOM_WRITE, /* write random SG 2 - 8 sectors, read */
MSC_TEST_SG_RANDOM_BOTH, /* write and read random SG 2 - 8 sectors */
MSC_RESERVED0,
MSC_RESERCED1,
MSC_TEST_PATTERNS, /* write known patterns and read it back */
};
/* Patterns taken from linux/arch/x86/mm/memtest.c */
static uint8_t msc_patterns[] = {
0x00, 0x11, 0x22, 0x33,
0x44, 0x55, 0x66, 0x77,
0x88, 0x99, 0xaa, 0xbb,
0xcc, 0xdd, 0xee, 0xff,
};
/* ------------------------------------------------------------------------- */
/* units which will be used for pretty printing the amount of data
* transferred
*/
static char units[] = {
' ',
'k',
'M',
'G',
'T',
'P',
'E',
'Z',
'Y',
};
/**
* init_buffer - initializes our TX buffer with known data
* @buf: Buffer to initialize
*/
static void init_buffer(struct usb_msc_test *msc)
{
memset(msc->txbuf, 0x55, msc->size);
}
/**
* alloc_buffer - allocates a @size buffer
* @size: Size of buffer
*/
static unsigned char *alloc_buffer(unsigned size)
{
void *tmp;
int ret;
if (size == 0) {
DBG("%s: cannot allocate a zero sized buffer\n", __func__);
return NULL;
}
ret = posix_memalign(&tmp, getpagesize(), size);
if (ret)
return NULL;
return tmp;
}
/**
* alloc_and_init_buffer - Allocates and initializes both buffers
* @msc: Mass Storage Test Context
*/
static int alloc_and_init_buffer(struct usb_msc_test *msc)
{
int ret = -ENOMEM;
msc->txbuf = alloc_buffer(msc->size);
if (!msc->txbuf) {
DBG("%s: unable to allocate txbuf\n", __func__);
goto err0;
}
init_buffer(msc);
msc->rxbuf = alloc_buffer(msc->size);
if (!msc->rxbuf) {
DBG("%s: unable to allocate rxbuf\n", __func__);
goto err1;
}
return 0;
err1:
free(msc->txbuf);
err0:
return ret;
}
static float throughput(struct timespec *start, struct timespec *end, size_t size)
{
int64_t diff;
diff = (end->tv_sec - start->tv_sec) * 1000000000;
diff += end->tv_nsec - start->tv_nsec;
return (float) size / ((diff / 1000000000.0) * 1024 * 1024);
}
/**
* report_progess - reports the progress of @test
* @msc: Mass Storage Test Context
* @test: test case number
*
* each test case implementation is required to call this function
* in order for the user to get progress report.
*/
static void report_progress(struct usb_msc_test *msc, enum usb_msc_test_case test, int show_tput)
{
float transferred = 0;
int i;
char unit = ' ';
transferred = (float) msc->transferred;
for (i = 0; i < ARRAY_SIZE(units); i++) {
if (transferred >= 1024.0) {
transferred /= 1024.0;
continue;
}
unit = units[i];
break;
}
if (!debug) {
if (show_tput) {
msc->read_tput /= msc->count;
msc->write_tput /= msc->count;
printf("\rtest %2d: sent %10.02f %cB read %10.02f MB/s write %10.02f MB/s ... ",
test, transferred, unit, msc->read_tput, msc->write_tput);
} else {
printf("\rtest %2d: sent %10.02f %cB read MB/s write MB/s ... ",
test, transferred, unit);
}
fflush(stdout);
}
}
/* ------------------------------------------------------------------------- */
/**
* do_write - Write txbuf to fd
* @msc: Mass Storage Test Context
* @bytes: Amount of bytes to write
*/
static int do_write(struct usb_msc_test *msc, unsigned bytes)
{
int done = 0;
int ret = -EINVAL;
unsigned char *buf = msc->txbuf;
clock_gettime(CLOCK_MONOTONIC_RAW, &start);
while (done < bytes) {
unsigned size = bytes - done;
if (size > msc->pempty) {
DBG("%s: size too big\n", __func__);
size = msc->pempty;
}
ret = write(msc->fd, buf + done, size);
if (ret < 0) {
DBG("%s: write failed\n", __func__);
goto err;
}
done += ret;
msc->pempty -= ret;
if (msc->pempty == 0) {
off_t pos;
DBG("%s: restarting\n", __func__);
msc->pempty = msc->psize;
done = 0;
pos = lseek(msc->fd, 0, SEEK_SET);
if (pos < 0) {
DBG("%s: couldn't seek the start\n", __func__);
ret = (int) pos;
goto err;
}
}
}
clock_gettime(CLOCK_MONOTONIC_RAW, &end);
msc->write_tput += throughput(&start, &end, ret);
msc->offset = ret;
return 0;
err:
return ret;
}
/**
* do_read - Read from fd to rxbuf
* @msc: Mass Storage Test Context
* @bytes: Amount of data to read
*/
static int do_read(struct usb_msc_test *msc, unsigned bytes)
{
int done = 0;
int ret;
unsigned char *buf = msc->rxbuf;
clock_gettime(CLOCK_MONOTONIC_RAW, &start);
while (done < bytes) {
ret = read(msc->fd, buf + done, bytes - done);
if (ret < 0) {
DBG("%s: read failed\n", __func__);
perror("do_read");
goto err;
}
if (ret == 0) {
DBG("%s: read returned 0 bytes\n", __func__);
goto err;
}
done += ret;
msc->transferred += ret;
}
clock_gettime(CLOCK_MONOTONIC_RAW, &end);
msc->read_tput += throughput(&start, &end, bytes);
return 0;
err:
return ret;
}
static void __maybe_unused hexdump(char *buf, unsigned size)
{
int i;
for (i = 0; i < size; i++) {
if (i && ((i % 16) == 0))
printf("\n");
printf("%02x ", buf[i]);
}
printf("\n");
}
/**
* do_verify - Verify consistency of data
* @msc: Mass Storage Test Context
* @bytes: Amount of data to verify
*/
static int do_verify(struct usb_msc_test *msc, unsigned bytes)
{
unsigned char tx_hash[SHA_DIGEST_LENGTH];
unsigned char rx_hash[SHA_DIGEST_LENGTH];
unsigned char *ret;
ret = SHA1(msc->txbuf, bytes, tx_hash);
if (!ret)
return -EINVAL;
ret = SHA1(msc->rxbuf, bytes, rx_hash);
if (!ret)
return -EINVAL;
return strncmp((char *) tx_hash, (char *) rx_hash, SHA_DIGEST_LENGTH);
}
/**
* do_writev - SG Write txbuf to fd
* @msc: Mass Storage Test Context
* @iov: iovec structure pointer
* @count: how many transfers
*/
static int do_writev(struct usb_msc_test *msc, const struct iovec *iov,
unsigned count)
{
off_t pos;
int ret;
clock_gettime(CLOCK_MONOTONIC_RAW, &start);
ret = writev(msc->fd, iov, count);
if (ret < 0) {
DBG("%s: writev failed\n", __func__);
goto err;
}
clock_gettime(CLOCK_MONOTONIC_RAW, &end);
msc->write_tput += throughput(&start, &end, ret);
msc->pempty -= ret;
if (msc->pempty == 0) {
DBG("%s: restarting\n", __func__);
msc->pempty = msc->psize;
pos = lseek(msc->fd, 0, SEEK_SET);
if (pos < 0) {
DBG("%s: couldn't seek the start\n", __func__);
ret = (int) pos;
goto err;
}
}
pos = lseek(msc->fd, 0, SEEK_CUR);
if (pos < 0) {
ret = (int) pos;
DBG("%s: couldn't seek current offset\n", __func__);
goto err;
}
msc->offset = ret;
return 0;
err:
return ret;
}
/**
* do_read - SG Read from fd to rxbuf
* @msc: Mass Storage Test Context
* @iov: iovec structure pointer
* @count: how many transfers
*/
static int do_readv(struct usb_msc_test *msc, const struct iovec *iov,
unsigned bytes)
{
int ret;
clock_gettime(CLOCK_MONOTONIC_RAW, &start);
ret = readv(msc->fd, iov, bytes);
if (ret < 0) {
DBG("%s: readv failed\n", __func__);
goto err;
}
clock_gettime(CLOCK_MONOTONIC_RAW, &end);
msc->read_tput += throughput(&start, &end, ret);
msc->transferred += ret;
return 0;
err:
return ret;
}
/* ------------------------------------------------------------------------- */
/*
* do_test_patterns - write known pattern and read it back
* @msc: Mass Storage Test Context
*/
static int do_test_patterns(struct usb_msc_test *msc)
{
int ret = 0;
int i;
for (i = 0; i < msc->count; i++) {
uint8_t pattern = msc_patterns[msc->pattern];
off_t pos;
memset(msc->txbuf, pattern, msc->size);
memset(msc->rxbuf, 0x00, msc->size);
ret = do_write(msc, msc->size);
if (ret < 0)
break;
pos = lseek(msc->fd, msc->offset - msc->size, SEEK_SET);
if (pos < 0) {
ret = (int) pos;
break;
}
msc->offset = ret;
ret = do_read(msc, msc->size);
if (ret < 0)
break;
ret = do_verify(msc, msc->size);
if (ret < 0)
break;
report_progress(msc, MSC_TEST_PATTERNS, false);
}
report_progress(msc, MSC_TEST_PATTERNS, true);
return ret;
}
/**
* do_test_sg_random_both - write and read several of random size
* @msc: Mass Storage Test Context
*/
static int do_test_sg_random_both(struct usb_msc_test *msc)
{
unsigned char *txbuf = msc->txbuf;
unsigned char *rxbuf = msc->rxbuf;
unsigned sect_size = msc->sect_size;
unsigned len = msc->size;
off_t pos;
int ret = 0;
int i;
const struct iovec tiov[] = {
{
.iov_base = txbuf,
.iov_len = 8 * sect_size,
},
{
.iov_base = txbuf + 8 * sect_size,
.iov_len = 1 * sect_size,
},
{
.iov_base = txbuf + 9 * sect_size,
.iov_len = 3 * sect_size,
},
{
.iov_base = txbuf + 12 * sect_size,
.iov_len = 32 * sect_size,
},
{
.iov_base = txbuf + 44 * sect_size,
.iov_len = 20 * sect_size,
},
{
.iov_base = txbuf + 64 * sect_size,
.iov_len = 14 * sect_size,
},
{
.iov_base = txbuf + 78 * sect_size,
.iov_len = 16 * sect_size,
},
{
.iov_base = txbuf + 94 * sect_size,
.iov_len = 34 * sect_size,
},
};
const struct iovec riov[] = {
{
.iov_base = rxbuf,
.iov_len = 8 * sect_size,
},
{
.iov_base = rxbuf + 8 * sect_size,
.iov_len = 1 * sect_size,
},
{
.iov_base = rxbuf + 9 * sect_size,
.iov_len = 3 * sect_size,
},
{
.iov_base = rxbuf + 12 * sect_size,
.iov_len = 32 * sect_size,
},
{
.iov_base = rxbuf + 44 * sect_size,
.iov_len = 20 * sect_size,
},
{
.iov_base = rxbuf + 64 * sect_size,
.iov_len = 14 * sect_size,
},
{
.iov_base = rxbuf + 78 * sect_size,
.iov_len = 16 * sect_size,
},
{
.iov_base = rxbuf + 94 * sect_size,
.iov_len = 34 * sect_size,
},
};
pos = lseek(msc->fd, 0, SEEK_CUR);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
ret = (int) pos;
goto err;
}
msc->offset = ret;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
ret = do_writev(msc, tiov, 8);
if (ret < 0)
goto err;
pos = lseek(msc->fd, msc->offset - len, SEEK_SET);
if (pos < 0) {
ret = (int) pos;
DBG("%s: lseek failed\n", __func__);
goto err;
}
ret = do_readv(msc, riov, 8);
if (ret < 0)
goto err;
ret = do_verify(msc, len);
if (ret < 0)
goto err;
report_progress(msc, MSC_TEST_SG_RANDOM_BOTH, false);
}
report_progress(msc, MSC_TEST_SG_RANDOM_BOTH, true);
err:
return ret;
}
/**
* do_test_sg_random_write - write several of random size, read 1 64k
* @msc: Mass Storage Test Context
*/
static int do_test_sg_random_write(struct usb_msc_test *msc)
{
unsigned char *txbuf = msc->txbuf;
unsigned char *rxbuf = msc->rxbuf;
unsigned sect_size = msc->sect_size;
unsigned len = msc->size;
off_t pos;
int ret = 0;
int i;
const struct iovec tiov[] = {
{
.iov_base = txbuf,
.iov_len = 8 * sect_size,
},
{
.iov_base = txbuf + 8 * sect_size,
.iov_len = 1 * sect_size,
},
{
.iov_base = txbuf + 9 * sect_size,
.iov_len = 3 * sect_size,
},
{
.iov_base = txbuf + 12 * sect_size,
.iov_len = 32 * sect_size,
},
{
.iov_base = txbuf + 44 * sect_size,
.iov_len = 20 * sect_size,
},
{
.iov_base = txbuf + 64 * sect_size,
.iov_len = 14 * sect_size,
},
{
.iov_base = txbuf + 78 * sect_size,
.iov_len = 16 * sect_size,
},
{
.iov_base = txbuf + 94 * sect_size,
.iov_len = 34 * sect_size,
},
};
const struct iovec riov[] = {
{
.iov_base = rxbuf,
.iov_len = len,
},
};
pos = lseek(msc->fd, 0, SEEK_CUR);
if (pos < 0) {
ret = (int) pos;
DBG("%s: lseek failed\n", __func__);
goto err;
}
msc->offset = ret;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
ret = do_writev(msc, tiov, 8);
if (ret < 0)
goto err;
pos = lseek(msc->fd, msc->offset - len, SEEK_SET);
if (pos < 0) {
ret = (int) pos;
DBG("%s: lseek failed\n", __func__);
goto err;
}
ret = do_readv(msc, riov, 1);
if (ret < 0)
goto err;
ret = do_verify(msc, len);
if (ret < 0)
goto err;
report_progress(msc, MSC_TEST_SG_RANDOM_WRITE, false);
}
report_progress(msc, MSC_TEST_SG_RANDOM_WRITE, true);
err:
return ret;
}
/**
* do_test_sg_random_read - write 1 64k sg and read in several of random size
* @msc: Mass Storage Test Context
*/
static int do_test_sg_random_read(struct usb_msc_test *msc)
{
unsigned char *txbuf = msc->txbuf;
unsigned char *rxbuf = msc->rxbuf;
unsigned sect_size = msc->sect_size;
unsigned len = msc->size;
off_t pos;
int ret = 0;
int i;
const struct iovec tiov[] = {
{
.iov_base = txbuf,
.iov_len = len,
},
};
const struct iovec riov[] = {
{
.iov_base = rxbuf,
.iov_len = 8 * sect_size,
},
{
.iov_base = rxbuf + 8 * sect_size,
.iov_len = 1 * sect_size,
},
{
.iov_base = rxbuf + 9 * sect_size,
.iov_len = 3 * sect_size,
},
{
.iov_base = rxbuf + 12 * sect_size,
.iov_len = 32 * sect_size,
},
{
.iov_base = rxbuf + 44 * sect_size,
.iov_len = 20 * sect_size,
},
{
.iov_base = rxbuf + 64 * sect_size,
.iov_len = 14 * sect_size,
},
{
.iov_base = rxbuf + 78 * sect_size,
.iov_len = 16 * sect_size,
},
{
.iov_base = rxbuf + 94 * sect_size,
.iov_len = 34 * sect_size,
},
};
pos = lseek(msc->fd, 0, SEEK_CUR);
if (pos < 0) {
ret = (int) pos;
DBG("%s: lseek failed\n", __func__);
goto err;
}
msc->offset = ret;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
ret = do_writev(msc, tiov, 1);
if (ret < 0)
goto err;
pos = lseek(msc->fd, msc->offset - len, SEEK_SET);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
goto err;
}
ret = do_readv(msc, riov, 8);
if (ret < 0)
goto err;
ret = do_verify(msc, len);
if (ret < 0)
goto err;
report_progress(msc, MSC_TEST_SG_RANDOM_READ, false);
}
report_progress(msc, MSC_TEST_SG_RANDOM_READ, true);
err:
return ret;
}
/**
* do_test_write_past_last - attempt to write past last sector
* @msc: Mass Storage Test Context
*/
static int do_test_write_past_last(struct usb_msc_test *msc)
{
off_t pos;
int ret = 0;
int i;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
/* seek to one sector less then needed */
pos = lseek(msc->fd, msc->psize - msc->size + msc->sect_size,
SEEK_SET);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
ret = (int) pos;
goto err;
}
ret = do_write(msc, msc->size);
if (ret >= 0) {
ret = -EINVAL;
goto err;
} else {
ret = 0;
}
report_progress(msc, MSC_TEST_WRITE_PAST_LAST, false);
}
report_progress(msc, MSC_TEST_WRITE_PAST_LAST, true);
err:
return ret;
}
/**
* do_test_lseek_past_last - attempt to read starting past the last sector
* @msc: Mass Storage Test Context
*/
static int do_test_lseek_past_last(struct usb_msc_test *msc)
{
off_t pos;
int ret = 0;
int i;
for (i = 0; i < msc->count; i++) {
pos = lseek(msc->fd, msc->psize + msc->sect_size,
SEEK_SET);
if (pos >= 0) {
DBG("%s: lseek passed\n", __func__);
ret = -EINVAL;
goto err;
}
report_progress(msc, MSC_TEST_LSEEK_PAST_LAST, false);
}
report_progress(msc, MSC_TEST_LSEEK_PAST_LAST, true);
err:
return ret;
}
/**
* do_test_read_past_last - attempt to read past last sector
* @msc: Mass Storage Test Context
*/
static int do_test_read_past_last(struct usb_msc_test *msc)
{
off_t pos;
int ret = 0;
int i;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
/* seek to one sector less then needed */
pos = lseek(msc->fd, msc->psize - msc->size + msc->sect_size,
SEEK_SET);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
ret = (int) pos;
goto err;
}
ret = do_read(msc, msc->size);
if (ret > 0) {
ret = -EINVAL;
goto err;
}
report_progress(msc, MSC_TEST_READ_PAST_LAST, false);
}
report_progress(msc, MSC_TEST_READ_PAST_LAST, true);
err:
return ret;
}
/**
* do_test_sg_128sect - SG write/read/verify 8 sectors at a time
* @msc: Mass Storage Test Context
*/
static int do_test_sg_128sect(struct usb_msc_test *msc)
{
unsigned char *txbuf = msc->txbuf;
unsigned char *rxbuf = msc->rxbuf;
unsigned len = 128 * msc->sect_size;
off_t pos;
int ret = 0;
int i;
const struct iovec tiov[] = {
{
.iov_base = txbuf,
.iov_len = len,
},
};
const struct iovec riov[] = {
{
.iov_base = rxbuf,
.iov_len = len,
},
};
pos = lseek(msc->fd, 0, SEEK_CUR);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
ret = (int) pos;
goto err;
}
msc->offset = ret;
for (i = 0; i < msc->count; i++) {
memset(msc->rxbuf, 0x00, msc->size);
ret = do_writev(msc, tiov, 1);
if (ret < 0)
goto err;
pos = lseek(msc->fd, msc->offset - len, SEEK_SET);
if (pos < 0) {
DBG("%s: lseek failed\n", __func__);
ret = (int) pos;
goto err;
}
ret = do_readv(msc, riov, 1);
if (ret < 0)
goto err;
ret = do_verify(msc, len);
if (ret < 0)
goto err;
report_progress(msc, MSC_TEST_SG_128SECT, false);
}
report_progress(msc, MSC_TEST_SG_128SECT, true);
err:
return ret;
}
/**
* do_test_sg_64sect - SG write/read/verify 8 sectors at a time
* @msc: Mass Storage Test Context
*/
static int do_test_sg_64sect(struct usb_msc_test *msc)