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e2fsprogs/misc/badblocks.c
Theodore Ts'o 10f9b11b76 badblocks: add error checking for command-line arguments for -b and -c 
Also remove a dead assignment (the value of try is overwritten after
the continue statement).

Addresses-Coverity-Bug: 1297515
Addresses-Coverity-Bug: 1464573
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2021-02-12 11:53:23 -05:00

1371 lines
33 KiB
C
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/*
* badblocks.c - Bad blocks checker
*
* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* Copyright 1995, 1996, 1997, 1998, 1999 by Theodore Ts'o
* Copyright 1999 by David Beattie
*
* This file is based on the minix file system programs fsck and mkfs
* written and copyrighted by Linus Torvalds <Linus.Torvalds@cs.helsinki.fi>
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
/*
* History:
* 93/05/26 - Creation from e2fsck
* 94/02/27 - Made a separate bad blocks checker
* 99/06/30...99/07/26 - Added non-destructive write-testing,
* configurable blocks-at-once parameter,
* loading of badblocks list to avoid testing
* blocks known to be bad, multiple passes to
* make sure that no new blocks are added to the
* list. (Work done by David Beattie)
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE /* for O_DIRECT */
#endif
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <setjmp.h>
#include <time.h>
#include <limits.h>
#ifdef HAVE_MBSTOWCS
#include <wchar.h>
#endif
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include "et/com_err.h"
#include "ext2fs/ext2_io.h"
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "support/nls-enable.h"
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
#endif
/* Maximum number of bad blocks we support */
#define MAX_BAD_BLOCKS (INT_MAX/2)
static const char * program_name = "badblocks";
static const char * done_string = N_("done \n");
static int v_flag; /* verbose */
static int w_flag; /* do r/w test: 0=no, 1=yes,
* 2=non-destructive */
static int s_flag; /* show progress of test */
static int force; /* force check of mounted device */
static int t_flag; /* number of test patterns */
static int t_max; /* allocated test patterns */
static unsigned int *t_patts; /* test patterns */
static int use_buffered_io;
static int exclusive_ok;
static unsigned int max_bb = MAX_BAD_BLOCKS; /* Abort test if more than this
* number of bad blocks has been
* encountered */
static unsigned int d_flag; /* delay factor between reads */
static struct timeval time_start;
#define T_INC 32
static unsigned int sys_page_size = 4096;
static void usage(void)
{
fprintf(stderr, _(
"Usage: %s [-b block_size] [-i input_file] [-o output_file] [-svwnfBX]\n"
" [-c blocks_at_once] [-d delay_factor_between_reads] [-e max_bad_blocks]\n"
" [-p num_passes] [-t test_pattern [-t test_pattern [...]]]\n"
" device [last_block [first_block]]\n"),
program_name);
exit (1);
}
static void exclusive_usage(void)
{
fprintf(stderr,
_("%s: The -n and -w options are mutually exclusive.\n\n"),
program_name);
exit(1);
}
static blk_t currently_testing = 0;
static blk_t num_blocks = 0;
static blk_t num_read_errors = 0;
static blk_t num_write_errors = 0;
static blk_t num_corruption_errors = 0;
static ext2_badblocks_list bb_list = NULL;
static FILE *out;
static blk_t next_bad = 0;
static ext2_badblocks_iterate bb_iter = NULL;
enum error_types { READ_ERROR, WRITE_ERROR, CORRUPTION_ERROR };
static void *allocate_buffer(size_t size)
{
void *ret = 0;
#ifdef HAVE_POSIX_MEMALIGN
if (posix_memalign(&ret, sys_page_size, size) != 0)
ret = 0;
#else
#ifdef HAVE_MEMALIGN
ret = memalign(sys_page_size, size);
#else
#ifdef HAVE_VALLOC
ret = valloc(size);
#endif /* HAVE_VALLOC */
#endif /* HAVE_MEMALIGN */
#endif /* HAVE_POSIX_MEMALIGN */
if (!ret)
ret = malloc(size);
return ret;
}
/*
* This routine reports a new bad block. If the bad block has already
* been seen before, then it returns 0; otherwise it returns 1.
*/
static int bb_output (blk_t bad, enum error_types error_type)
{
errcode_t errcode;
if (ext2fs_badblocks_list_test(bb_list, bad))
return 0;
fprintf(out, "%lu\n", (unsigned long) bad);
fflush(out);
errcode = ext2fs_badblocks_list_add (bb_list, bad);
if (errcode) {
com_err (program_name, errcode, "adding to in-memory bad block list");
exit (1);
}
/* kludge:
increment the iteration through the bb_list if
an element was just added before the current iteration
position. This should not cause next_bad to change. */
if (bb_iter && bad < next_bad)
ext2fs_badblocks_list_iterate (bb_iter, &next_bad);
if (error_type == READ_ERROR) {
num_read_errors++;
} else if (error_type == WRITE_ERROR) {
num_write_errors++;
} else if (error_type == CORRUPTION_ERROR) {
num_corruption_errors++;
}
return 1;
}
static char *time_diff_format(struct timeval *tv1,
struct timeval *tv2, char *buf)
{
time_t diff = (tv1->tv_sec - tv2->tv_sec);
int hr,min,sec;
sec = diff % 60;
diff /= 60;
min = diff % 60;
hr = diff / 60;
if (hr)
sprintf(buf, "%d:%02d:%02d", hr, min, sec);
else
sprintf(buf, "%d:%02d", min, sec);
return buf;
}
static float calc_percent(unsigned long current, unsigned long total) {
float percent = 0.0;
if (total <= 0)
return percent;
if (current >= total) {
percent = 100.0;
} else {
percent=(100.0*(float)current/(float)total);
}
return percent;
}
static void print_status(void)
{
struct timeval time_end;
char diff_buf[32], line_buf[128];
#ifdef HAVE_MBSTOWCS
wchar_t wline_buf[128];
#endif
int len;
gettimeofday(&time_end, 0);
len = snprintf(line_buf, sizeof(line_buf),
_("%6.2f%% done, %s elapsed. "
"(%d/%d/%d errors)"),
calc_percent((unsigned long) currently_testing,
(unsigned long) num_blocks),
time_diff_format(&time_end, &time_start, diff_buf),
num_read_errors,
num_write_errors,
num_corruption_errors);
#ifdef HAVE_MBSTOWCS
mbstowcs(wline_buf, line_buf, sizeof(line_buf));
len = wcswidth(wline_buf, sizeof(line_buf));
if (len < 0)
len = strlen(line_buf); /* Should never happen... */
#endif
fputs(line_buf, stderr);
memset(line_buf, '\b', len);
line_buf[len] = 0;
fputs(line_buf, stderr);
fflush (stderr);
}
static void alarm_intr(int alnum EXT2FS_ATTR((unused)))
{
signal (SIGALRM, alarm_intr);
alarm(1);
if (!num_blocks)
return;
print_status();
}
static void *terminate_addr = NULL;
static void terminate_intr(int signo EXT2FS_ATTR((unused)))
{
fflush(out);
fprintf(stderr, "\n\nInterrupted at block %llu\n",
(unsigned long long) currently_testing);
fflush(stderr);
if (terminate_addr)
longjmp(terminate_addr,1);
exit(1);
}
static void capture_terminate(jmp_buf term_addr)
{
terminate_addr = term_addr;
signal (SIGHUP, terminate_intr);
signal (SIGINT, terminate_intr);
signal (SIGPIPE, terminate_intr);
signal (SIGTERM, terminate_intr);
signal (SIGUSR1, terminate_intr);
signal (SIGUSR2, terminate_intr);
}
static void uncapture_terminate(void)
{
terminate_addr = NULL;
signal (SIGHUP, SIG_DFL);
signal (SIGINT, SIG_DFL);
signal (SIGPIPE, SIG_DFL);
signal (SIGTERM, SIG_DFL);
signal (SIGUSR1, SIG_DFL);
signal (SIGUSR2, SIG_DFL);
}
/* Linux requires that O_DIRECT I/Os be 512-byte sector aligned */
#define O_DIRECT_SIZE 512
static void set_o_direct(int dev, unsigned char *buffer, size_t size,
ext2_loff_t offset)
{
#ifdef O_DIRECT
static int current_O_DIRECT; /* Current status of O_DIRECT flag */
int new_flag = O_DIRECT;
int flag;
if ((use_buffered_io != 0) ||
(((unsigned long) buffer & (sys_page_size - 1)) != 0) ||
((size & (sys_page_size - 1)) != 0) ||
((offset & (O_DIRECT_SIZE - 1)) != 0))
new_flag = 0;
if (new_flag != current_O_DIRECT) {
/* printf("%s O_DIRECT\n", new_flag ? "Setting" : "Clearing"); */
flag = fcntl(dev, F_GETFL);
if (flag > 0) {
flag = (flag & ~O_DIRECT) | new_flag;
if (fcntl(dev, F_SETFL, flag) < 0)
perror("set_o_direct");
}
current_O_DIRECT = new_flag;
}
#endif
}
static void pattern_fill(unsigned char *buffer, unsigned int pattern,
size_t n)
{
unsigned int i, nb;
unsigned char bpattern[sizeof(pattern)], *ptr;
if (pattern == (unsigned int) ~0) {
for (ptr = buffer; ptr < buffer + n; ptr++) {
(*ptr) = random() % (1 << (8 * sizeof(char)));
}
if (s_flag | v_flag)
fputs(_("Testing with random pattern: "), stderr);
} else {
bpattern[0] = 0;
for (i = 0; i < sizeof(bpattern); i++) {
if (pattern == 0)
break;
bpattern[i] = pattern & 0xFF;
pattern = pattern >> 8;
}
nb = i ? (i-1) : 0;
for (ptr = buffer, i = nb; ptr < buffer + n; ptr++) {
*ptr = bpattern[i];
if (i == 0)
i = nb;
else
i--;
}
if (s_flag | v_flag) {
fputs(_("Testing with pattern 0x"), stderr);
for (i = 0; i <= nb; i++)
fprintf(stderr, "%02x", buffer[i]);
fputs(": ", stderr);
}
}
}
/*
* Perform a read of a sequence of blocks; return the number of blocks
* successfully sequentially read.
*/
static int do_read (int dev, unsigned char * buffer, int try, int block_size,
blk_t current_block)
{
long got;
struct timeval tv1, tv2;
#define NANOSEC (1000000000L)
#define MILISEC (1000L)
#if 0
printf("do_read: block %d, try %d\n", current_block, try);
#endif
set_o_direct(dev, buffer, try * block_size,
((ext2_loff_t) current_block) * block_size);
if (v_flag > 1)
print_status();
/* Seek to the correct loc. */
if (ext2fs_llseek (dev, (ext2_loff_t) current_block * block_size,
SEEK_SET) != (ext2_loff_t) current_block * block_size)
com_err (program_name, errno, "%s", _("during seek"));
/* Try the read */
if (d_flag)
gettimeofday(&tv1, NULL);
got = read (dev, buffer, try * block_size);
if (d_flag)
gettimeofday(&tv2, NULL);
if (got < 0)
got = 0;
if (got & 511)
fprintf(stderr, _("Weird value (%ld) in do_read\n"), got);
got /= block_size;
if (d_flag && got == try) {
#ifdef HAVE_NANOSLEEP
struct timespec ts;
ts.tv_sec = tv2.tv_sec - tv1.tv_sec;
ts.tv_nsec = (tv2.tv_usec - tv1.tv_usec) * MILISEC;
if (ts.tv_nsec < 0) {
ts.tv_nsec += NANOSEC;
ts.tv_sec -= 1;
}
/* increase/decrease the sleep time based on d_flag value */
ts.tv_sec = ts.tv_sec * d_flag / 100;
ts.tv_nsec = ts.tv_nsec * d_flag / 100;
if (ts.tv_nsec > NANOSEC) {
ts.tv_sec += ts.tv_nsec / NANOSEC;
ts.tv_nsec %= NANOSEC;
}
if (ts.tv_sec || ts.tv_nsec)
nanosleep(&ts, NULL);
#else
#ifdef HAVE_USLEEP
struct timeval tv;
tv.tv_sec = tv2.tv_sec - tv1.tv_sec;
tv.tv_usec = tv2.tv_usec - tv1.tv_usec;
tv.tv_sec = tv.tv_sec * d_flag / 100;
tv.tv_usec = tv.tv_usec * d_flag / 100;
if (tv.tv_usec > 1000000) {
tv.tv_sec += tv.tv_usec / 1000000;
tv.tv_usec %= 1000000;
}
if (tv.tv_sec)
sleep(tv.tv_sec);
if (tv.tv_usec)
usleep(tv.tv_usec);
#endif
#endif
}
return got;
}
/*
* Perform a write of a sequence of blocks; return the number of blocks
* successfully sequentially written.
*/
static int do_write(int dev, unsigned char * buffer, int try, int block_size,
unsigned long current_block)
{
long got;
#if 0
printf("do_write: block %lu, try %d\n", current_block, try);
#endif
set_o_direct(dev, buffer, try * block_size,
((ext2_loff_t) current_block) * block_size);
if (v_flag > 1)
print_status();
/* Seek to the correct loc. */
if (ext2fs_llseek (dev, (ext2_loff_t) current_block * block_size,
SEEK_SET) != (ext2_loff_t) current_block * block_size)
com_err (program_name, errno, "%s", _("during seek"));
/* Try the write */
got = write (dev, buffer, try * block_size);
if (got < 0)
got = 0;
if (got & 511)
fprintf(stderr, "Weird value (%ld) in do_write\n", got);
got /= block_size;
return got;
}
static int host_dev;
static void flush_bufs(void)
{
errcode_t retval;
#ifdef O_DIRECT
if (!use_buffered_io)
return;
#endif
retval = ext2fs_sync_device(host_dev, 1);
if (retval)
com_err(program_name, retval, "%s",
_("during ext2fs_sync_device"));
}
static unsigned int test_ro (int dev, blk_t last_block,
int block_size, blk_t first_block,
unsigned int blocks_at_once)
{
unsigned char * blkbuf;
int try;
int got;
unsigned int bb_count = 0;
errcode_t errcode;
blk_t recover_block = ~0;
/* set up abend handler */
capture_terminate(NULL);
errcode = ext2fs_badblocks_list_iterate_begin(bb_list,&bb_iter);
if (errcode) {
com_err(program_name, errcode, "%s",
_("while beginning bad block list iteration"));
exit (1);
}
do {
ext2fs_badblocks_list_iterate (bb_iter, &next_bad);
} while (next_bad && next_bad < first_block);
if (t_flag) {
blkbuf = allocate_buffer((blocks_at_once + 1) * block_size);
} else {
blkbuf = allocate_buffer(blocks_at_once * block_size);
}
if (!blkbuf)
{
com_err(program_name, ENOMEM, "%s",
_("while allocating buffers"));
exit (1);
}
if (v_flag) {
fprintf(stderr, _("Checking blocks %lu to %lu\n"),
(unsigned long)first_block,
(unsigned long)last_block - 1);
}
if (t_flag) {
fputs(_("Checking for bad blocks in read-only mode\n"), stderr);
pattern_fill(blkbuf + blocks_at_once * block_size,
t_patts[0], block_size);
}
flush_bufs();
try = blocks_at_once;
currently_testing = first_block;
num_blocks = last_block - 1;
if (!t_flag && (s_flag || v_flag))
fputs(_("Checking for bad blocks (read-only test): "), stderr);
if (s_flag && v_flag <= 1)
alarm_intr(SIGALRM);
while (currently_testing < last_block)
{
if (bb_count >= max_bb) {
if (s_flag || v_flag) {
fputs(_("Too many bad blocks, aborting test\n"), stderr);
}
break;
}
if (next_bad) {
if (currently_testing == next_bad) {
/* fprintf (out, "%lu\n", nextbad); */
ext2fs_badblocks_list_iterate (bb_iter, &next_bad);
currently_testing++;
continue;
}
else if (currently_testing + try > next_bad)
try = next_bad - currently_testing;
}
if (currently_testing + try > last_block)
try = last_block - currently_testing;
got = do_read (dev, blkbuf, try, block_size, currently_testing);
if (t_flag) {
/* test the comparison between all the
blocks successfully read */
int i;
for (i = 0; i < got; ++i)
if (memcmp (blkbuf+i*block_size,
blkbuf+blocks_at_once*block_size,
block_size))
bb_count += bb_output(currently_testing + i, CORRUPTION_ERROR);
}
if (got == 0 && try == 1)
bb_count += bb_output(currently_testing++, READ_ERROR);
currently_testing += got;
if (got != try) {
try = 1;
if (recover_block == ~0U)
recover_block = currently_testing - got +
blocks_at_once;
continue;
} else if (currently_testing == recover_block) {
try = blocks_at_once;
recover_block = ~0;
}
}
num_blocks = 0;
alarm(0);
if (s_flag || v_flag)
fputs(_(done_string), stderr);
fflush (stderr);
free (blkbuf);
ext2fs_badblocks_list_iterate_end(bb_iter);
uncapture_terminate();
return bb_count;
}
static unsigned int test_rw (int dev, blk_t last_block,
int block_size, blk_t first_block,
unsigned int blocks_at_once)
{
unsigned char *buffer, *read_buffer;
const unsigned int patterns[] = {0xaa, 0x55, 0xff, 0x00};
const unsigned int *pattern;
int i, try, got, nr_pattern, pat_idx;
unsigned int bb_count = 0;
blk_t recover_block = ~0;
/* set up abend handler */
capture_terminate(NULL);
buffer = allocate_buffer(2 * blocks_at_once * block_size);
read_buffer = buffer + blocks_at_once * block_size;
if (!buffer) {
com_err(program_name, ENOMEM, "%s",
_("while allocating buffers"));
exit (1);
}
flush_bufs();
if (v_flag) {
fputs(_("Checking for bad blocks in read-write mode\n"),
stderr);
fprintf(stderr, _("From block %lu to %lu\n"),
(unsigned long) first_block,
(unsigned long) last_block - 1);
}
if (t_flag) {
pattern = t_patts;
nr_pattern = t_flag;
} else {
pattern = patterns;
nr_pattern = sizeof(patterns) / sizeof(patterns[0]);
}
for (pat_idx = 0; pat_idx < nr_pattern; pat_idx++) {
pattern_fill(buffer, pattern[pat_idx],
blocks_at_once * block_size);
num_blocks = last_block - 1;
currently_testing = first_block;
if (s_flag && v_flag <= 1)
alarm_intr(SIGALRM);
try = blocks_at_once;
while (currently_testing < last_block) {
if (bb_count >= max_bb) {
if (s_flag || v_flag) {
fputs(_("Too many bad blocks, aborting test\n"), stderr);
}
break;
}
if (currently_testing + try > last_block)
try = last_block - currently_testing;
got = do_write(dev, buffer, try, block_size,
currently_testing);
if (v_flag > 1)
print_status();
if (got == 0 && try == 1)
bb_count += bb_output(currently_testing++, WRITE_ERROR);
currently_testing += got;
if (got != try) {
try = 1;
if (recover_block == ~0U)
recover_block = currently_testing -
got + blocks_at_once;
continue;
} else if (currently_testing == recover_block) {
try = blocks_at_once;
recover_block = ~0;
}
}
num_blocks = 0;
alarm (0);
if (s_flag | v_flag)
fputs(_(done_string), stderr);
flush_bufs();
if (s_flag | v_flag)
fputs(_("Reading and comparing: "), stderr);
num_blocks = last_block;
currently_testing = first_block;
if (s_flag && v_flag <= 1)
alarm_intr(SIGALRM);
try = blocks_at_once;
while (currently_testing < last_block) {
if (bb_count >= max_bb) {
if (s_flag || v_flag) {
fputs(_("Too many bad blocks, aborting test\n"), stderr);
}
break;
}
if (currently_testing + try > last_block)
try = last_block - currently_testing;
got = do_read (dev, read_buffer, try, block_size,
currently_testing);
if (got == 0 && try == 1)
bb_count += bb_output(currently_testing++, READ_ERROR);
currently_testing += got;
if (got != try) {
try = 1;
if (recover_block == ~0U)
recover_block = currently_testing -
got + blocks_at_once;
continue;
} else if (currently_testing == recover_block) {
try = blocks_at_once;
recover_block = ~0U;
}
for (i=0; i < got; i++) {
if (memcmp(read_buffer + i * block_size,
buffer + i * block_size,
block_size))
bb_count += bb_output(currently_testing+i, CORRUPTION_ERROR);
}
if (v_flag > 1)
print_status();
}
num_blocks = 0;
alarm (0);
if (s_flag | v_flag)
fputs(_(done_string), stderr);
flush_bufs();
}
uncapture_terminate();
free(buffer);
return bb_count;
}
struct saved_blk_record {
blk_t block;
int num;
};
static unsigned int test_nd (int dev, blk_t last_block,
int block_size, blk_t first_block,
unsigned int blocks_at_once)
{
unsigned char *blkbuf, *save_ptr, *test_ptr, *read_ptr;
unsigned char *test_base, *save_base, *read_base;
int try, i;
const unsigned int patterns[] = { ~0 };
const unsigned int *pattern;
int nr_pattern, pat_idx;
int got, used2, written;
blk_t save_currently_testing;
struct saved_blk_record *test_record;
/* This is static to prevent being clobbered by the longjmp */
static int num_saved;
jmp_buf terminate_env;
errcode_t errcode;
unsigned long buf_used;
static unsigned int bb_count;
unsigned int granularity = blocks_at_once;
blk_t recover_block = ~0U;
bb_count = 0;
errcode = ext2fs_badblocks_list_iterate_begin(bb_list,&bb_iter);
if (errcode) {
com_err(program_name, errcode, "%s",
_("while beginning bad block list iteration"));
exit (1);
}
do {
ext2fs_badblocks_list_iterate (bb_iter, &next_bad);
} while (next_bad && next_bad < first_block);
blkbuf = allocate_buffer(3 * blocks_at_once * block_size);
test_record = malloc(blocks_at_once * sizeof(struct saved_blk_record));
if (!blkbuf || !test_record) {
com_err(program_name, ENOMEM, "%s",
_("while allocating buffers"));
exit (1);
}
save_base = blkbuf;
test_base = blkbuf + (blocks_at_once * block_size);
read_base = blkbuf + (2 * blocks_at_once * block_size);
num_saved = 0;
flush_bufs();
if (v_flag) {
fputs(_("Checking for bad blocks in non-destructive read-write mode\n"), stderr);
fprintf (stderr, _("From block %lu to %lu\n"),
(unsigned long) first_block,
(unsigned long) last_block - 1);
}
if (s_flag || v_flag > 1) {
fputs(_("Checking for bad blocks (non-destructive read-write test)\n"), stderr);
}
if (setjmp(terminate_env)) {
/*
* Abnormal termination by a signal is handled here.
*/
signal (SIGALRM, SIG_IGN);
fputs(_("\nInterrupt caught, cleaning up\n"), stderr);
save_ptr = save_base;
for (i=0; i < num_saved; i++) {
do_write(dev, save_ptr, test_record[i].num,
block_size, test_record[i].block);
save_ptr += test_record[i].num * block_size;
}
fflush (out);
exit(1);
}
/* set up abend handler */
capture_terminate(terminate_env);
if (t_flag) {
pattern = t_patts;
nr_pattern = t_flag;
} else {
pattern = patterns;
nr_pattern = sizeof(patterns) / sizeof(patterns[0]);
}
for (pat_idx = 0; pat_idx < nr_pattern; pat_idx++) {
pattern_fill(test_base, pattern[pat_idx],
blocks_at_once * block_size);
buf_used = 0;
bb_count = 0;
save_ptr = save_base;
test_ptr = test_base;
currently_testing = first_block;
num_blocks = last_block - 1;
if (s_flag && v_flag <= 1)
alarm_intr(SIGALRM);
while (currently_testing < last_block) {
if (bb_count >= max_bb) {
if (s_flag || v_flag) {
fputs(_("Too many bad blocks, aborting test\n"), stderr);
}
break;
}
got = try = granularity - buf_used;
if (next_bad) {
if (currently_testing == next_bad) {
/* fprintf (out, "%lu\n", nextbad); */
ext2fs_badblocks_list_iterate (bb_iter, &next_bad);
currently_testing++;
goto check_for_more;
}
else if (currently_testing + try > next_bad)
try = next_bad - currently_testing;
}
if (currently_testing + try > last_block)
try = last_block - currently_testing;
got = do_read (dev, save_ptr, try, block_size,
currently_testing);
if (got == 0) {
if (recover_block == ~0U)
recover_block = currently_testing +
blocks_at_once;
if (granularity != 1) {
granularity = 1;
continue;
}
/* First block must have been bad. */
bb_count += bb_output(currently_testing++, READ_ERROR);
goto check_for_more;
}
/*
* Note the fact that we've saved this much data
* *before* we overwrite it with test data
*/
test_record[num_saved].block = currently_testing;
test_record[num_saved].num = got;
num_saved++;
/* Write the test data */
written = do_write (dev, test_ptr, got, block_size,
currently_testing);
if (written != got)
com_err (program_name, errno,
_("during test data write, block %lu"),
(unsigned long) currently_testing +
written);
buf_used += got;
save_ptr += got * block_size;
test_ptr += got * block_size;
currently_testing += got;
if (got != try) {
if (recover_block == ~0U)
recover_block = currently_testing -
got + blocks_at_once;
continue;
}
check_for_more:
/*
* If there's room for more blocks to be tested this
* around, and we're not done yet testing the disk, go
* back and get some more blocks.
*/
if ((buf_used != granularity) &&
(currently_testing < last_block))
continue;
if (currently_testing >= recover_block) {
granularity = blocks_at_once;
recover_block = ~0;
}
flush_bufs();
save_currently_testing = currently_testing;
/*
* for each contiguous block that we read into the
* buffer (and wrote test data into afterwards), read
* it back (looping if necessary, to get past newly
* discovered unreadable blocks, of which there should
* be none, but with a hard drive which is unreliable,
* it has happened), and compare with the test data
* that was written; output to the bad block list if
* it doesn't match.
*/
used2 = 0;
save_ptr = save_base;
test_ptr = test_base;
read_ptr = read_base;
try = 0;
while (1) {
if (try == 0) {
if (used2 >= num_saved)
break;
currently_testing = test_record[used2].block;
try = test_record[used2].num;
used2++;
}
got = do_read (dev, read_ptr, try,
block_size, currently_testing);
/* test the comparison between all the
blocks successfully read */
for (i = 0; i < got; ++i)
if (memcmp (test_ptr+i*block_size,
read_ptr+i*block_size, block_size))
bb_count += bb_output(currently_testing + i, CORRUPTION_ERROR);
if (got < try) {
bb_count += bb_output(currently_testing + got, READ_ERROR);
got++;
}
/* write back original data */
do_write (dev, save_ptr, got,
block_size, currently_testing);
save_ptr += got * block_size;
currently_testing += got;
test_ptr += got * block_size;
read_ptr += got * block_size;
try -= got;
}
/* empty the buffer so it can be reused */
num_saved = 0;
buf_used = 0;
save_ptr = save_base;
test_ptr = test_base;
currently_testing = save_currently_testing;
}
num_blocks = 0;
alarm(0);
if (s_flag || v_flag > 1)
fputs(_(done_string), stderr);
flush_bufs();
}
uncapture_terminate();
fflush(stderr);
free(blkbuf);
free(test_record);
ext2fs_badblocks_list_iterate_end(bb_iter);
return bb_count;
}
static void check_mount(char *device_name)
{
errcode_t retval;
int mount_flags;
retval = ext2fs_check_if_mounted(device_name, &mount_flags);
if (retval) {
com_err("ext2fs_check_if_mount", retval,
_("while determining whether %s is mounted."),
device_name);
return;
}
if (mount_flags & EXT2_MF_MOUNTED) {
fprintf(stderr, _("%s is mounted; "), device_name);
if (force) {
fputs(_("badblocks forced anyway. "
"Hope /etc/mtab is incorrect.\n"), stderr);
return;
}
abort_badblocks:
fputs(_("it's not safe to run badblocks!\n"), stderr);
exit(1);
}
if ((mount_flags & EXT2_MF_BUSY) && !exclusive_ok) {
fprintf(stderr, _("%s is apparently in use by the system; "),
device_name);
if (force)
fputs(_("badblocks forced anyway.\n"), stderr);
else
goto abort_badblocks;
}
}
/*
* This function will convert a string to an unsigned long, printing
* an error message if it fails, and returning success or failure in err.
*/
static unsigned int parse_uint(const char *str, const char *descr)
{
char *tmp;
unsigned long ret;
errno = 0;
ret = strtoul(str, &tmp, 0);
if (*tmp || errno || (ret > UINT_MAX) ||
(ret == ULONG_MAX && errno == ERANGE)) {
com_err (program_name, 0, _("invalid %s - %s"), descr, str);
exit (1);
}
return ret;
}
int main (int argc, char ** argv)
{
int c;
char * device_name;
char * host_device_name = NULL;
char * input_file = NULL;
char * output_file = NULL;
FILE * in = NULL;
int block_size = 1024;
unsigned int blocks_at_once = 64;
blk64_t last_block, first_block;
int num_passes = 0;
int passes_clean = 0;
int dev;
errcode_t errcode;
unsigned int pattern;
unsigned int (*test_func)(int, blk_t,
int, blk_t,
unsigned int);
int open_flag;
long sysval;
unsigned long long inblk;
setbuf(stdout, NULL);
setbuf(stderr, NULL);
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
set_com_err_gettext(gettext);
#endif
srandom((unsigned int)time(NULL)); /* simple randomness is enough */
test_func = test_ro;
/* Determine the system page size if possible */
#ifdef HAVE_SYSCONF
#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
#define _SC_PAGESIZE _SC_PAGE_SIZE
#endif
#ifdef _SC_PAGESIZE
sysval = sysconf(_SC_PAGESIZE);
if (sysval > 0)
sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
#endif /* HAVE_SYSCONF */
if (argc && *argv)
program_name = *argv;
while ((c = getopt (argc, argv, "b:d:e:fi:o:svwnc:p:h:t:BX")) != EOF) {
switch (c) {
case 'b':
block_size = parse_uint(optarg, "block size");
break;
case 'f':
force++;
break;
case 'i':
input_file = optarg;
break;
case 'o':
output_file = optarg;
break;
case 's':
s_flag = 1;
break;
case 'v':
v_flag++;
break;
case 'w':
if (w_flag)
exclusive_usage();
test_func = test_rw;
w_flag = 1;
break;
case 'n':
if (w_flag)
exclusive_usage();
test_func = test_nd;
w_flag = 2;
break;
case 'c':
blocks_at_once = parse_uint(optarg, "blocks at once");
break;
case 'e':
max_bb = parse_uint(optarg, "max bad block count");
if (max_bb > MAX_BAD_BLOCKS) {
com_err (program_name, 0,
_("Too big max bad blocks count %u - "
"maximum is %u"), max_bb,
MAX_BAD_BLOCKS);
exit (1);
}
/* 0 really means unlimited but we cannot do that much... */
if (max_bb == 0)
max_bb = MAX_BAD_BLOCKS;
break;
case 'd':
d_flag = parse_uint(optarg, "read delay factor");
break;
case 'p':
num_passes = parse_uint(optarg,
"number of clean passes");
break;
case 'h':
host_device_name = optarg;
break;
case 't':
if (t_flag + 1 > t_max) {
unsigned int *t_patts_new;
t_patts_new = realloc(t_patts, sizeof(int) *
(t_max + T_INC));
if (!t_patts_new) {
com_err(program_name, ENOMEM,
_("can't allocate memory for "
"test_pattern - %s"),
optarg);
exit(1);
}
t_patts = t_patts_new;
t_max += T_INC;
}
if (!strcmp(optarg, "r") || !strcmp(optarg,"random")) {
t_patts[t_flag++] = ~0;
} else {
pattern = parse_uint(optarg, "test pattern");
if (pattern == (unsigned int) ~0)
pattern = 0xffff;
t_patts[t_flag++] = pattern;
}
break;
case 'B':
use_buffered_io = 1;
break;
case 'X':
exclusive_ok++;
break;
default:
usage();
}
}
if (!w_flag) {
if (t_flag > 1) {
com_err(program_name, 0, "%s",
_("Maximum of one test_pattern may be "
"specified in read-only mode"));
exit(1);
}
if (t_patts && (t_patts[0] == (unsigned int) ~0)) {
com_err(program_name, 0, "%s",
_("Random test_pattern is not allowed "
"in read-only mode"));
exit(1);
}
}
if ((block_size <= 0) || (block_size > (1 << 24)) ||
(block_size & (block_size - 1))) {
com_err(program_name, 0, _("Invalid block size: %d\n"),
block_size);
exit(1);
}
if ((blocks_at_once <= 0) ||
(((unsigned long long) block_size * blocks_at_once) > 0xFFFFFFFF)) {
com_err(program_name, 0, _("Invalid blocks_at_once: %d\n"),
blocks_at_once);
exit(1);
}
if (optind > argc - 1)
usage();
device_name = argv[optind++];
if (optind > argc - 1) {
errcode = ext2fs_get_device_size2(device_name,
block_size,
&last_block);
if (errcode == EXT2_ET_UNIMPLEMENTED) {
com_err(program_name, 0, "%s",
_("Couldn't determine device size; you "
"must specify\nthe size manually\n"));
exit(1);
}
if (errcode) {
com_err(program_name, errcode, "%s",
_("while trying to determine device size"));
exit(1);
}
} else {
errno = 0;
last_block = parse_uint(argv[optind], _("last block"));
last_block++;
optind++;
}
if (optind <= argc-1) {
errno = 0;
first_block = parse_uint(argv[optind], _("first block"));
} else first_block = 0;
if (first_block >= last_block) {
com_err (program_name, 0, _("invalid starting block (%llu): must be less than %llu"),
(unsigned long long) first_block,
(unsigned long long) last_block);
exit (1);
}
/* ext2 badblocks file can't handle large values */
if (last_block >> 32) {
com_err(program_name, EOVERFLOW,
_("invalid end block (%llu): must be 32-bit value"),
(unsigned long long) last_block);
exit(1);
}
if (w_flag)
check_mount(device_name);
gettimeofday(&time_start, 0);
open_flag = O_LARGEFILE | (w_flag ? O_RDWR : O_RDONLY);
dev = open (device_name, open_flag);
if (dev == -1) {
com_err (program_name, errno, _("while trying to open %s"),
device_name);
exit (1);
}
if (host_device_name) {
host_dev = open (host_device_name, open_flag);
if (host_dev == -1) {
com_err (program_name, errno,
_("while trying to open %s"),
host_device_name);
exit (1);
}
} else
host_dev = dev;
if (input_file) {
if (strcmp (input_file, "-") == 0)
in = stdin;
else {
in = fopen (input_file, "r");
if (in == NULL)
{
com_err (program_name, errno,
_("while trying to open %s"),
input_file);
exit (1);
}
}
}
if (output_file && strcmp (output_file, "-") != 0)
{
out = fopen (output_file, "w");
if (out == NULL)
{
com_err (program_name, errno,
_("while trying to open %s"),
output_file);
exit (1);
}
}
else
out = stdout;
errcode = ext2fs_badblocks_list_create(&bb_list,0);
if (errcode) {
com_err(program_name, errcode, "%s",
_("while creating in-memory bad blocks list"));
exit (1);
}
if (in) {
for(;;) {
switch (fscanf(in, "%llu\n", &inblk)) {
case 0:
com_err(program_name, 0, "%s",
_("input file - bad format"));
exit (1);
case EOF:
break;
default:
if (inblk >> 32) {
com_err(program_name,
EOVERFLOW, "%s",
_("while adding to in-memory "
"bad block list"));
exit(1);
}
next_bad = inblk;
errcode = ext2fs_badblocks_list_add(bb_list,next_bad);
if (errcode) {
com_err(program_name, errcode,
"%s",
_("while adding to in-memory "
"bad block list"));
exit (1);
}
continue;
}
break;
}
if (in != stdin)
fclose (in);
}
do {
unsigned int bb_count;
bb_count = test_func(dev, last_block, block_size,
first_block, blocks_at_once);
if (bb_count)
passes_clean = 0;
else
++passes_clean;
if (v_flag)
fprintf(stderr,
_("Pass completed, %u bad blocks found. (%d/%d/%d errors)\n"),
bb_count, num_read_errors, num_write_errors, num_corruption_errors);
} while (passes_clean < num_passes);
close (dev);
if (out != stdout)
fclose (out);
free(t_patts);
return 0;
}
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