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-rw-r--r--misc/badblocks.c1379
1 files changed, 1379 insertions, 0 deletions
diff --git a/misc/badblocks.c b/misc/badblocks.c
new file mode 100644
index 0000000..2b5ff6d
--- /dev/null
+++ b/misc/badblocks.c
@@ -0,0 +1,1379 @@
+/*
+ * 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, (size_t) 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, (size_t) 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(((size_t) blocks_at_once + 1) * block_size);
+ } else {
+ blkbuf = allocate_buffer((size_t) 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((size_t) 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((size_t) 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) {
+ com_err (program_name, 0, _("invalid %s - %s"), descr, str);
+ exit (1);
+ } else if ((ret > UINT_MAX) ||
+ (ret == ULONG_MAX && errno == ERANGE)) {
+ com_err (program_name, 0, _("%s too large - %lu"), descr, ret);
+ 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;
+ unsigned 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;
+ else
+ usage();
+ 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: %u\n"),
+ block_size);
+ exit(1);
+ }
+ if (blocks_at_once == 0) {
+ com_err(program_name, 0, _("Invalid number of blocks: %d\n"),
+ blocks_at_once);
+ exit(1);
+ } else if (((size_t) block_size * blocks_at_once) > SIZE_MAX / 3) {
+ /* maximum usage is in test_nd() */
+ com_err(program_name, 0, _("For block size %d, number of blocks too large: %d\n"),
+ block_size, 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,
+ (int) 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, (int) 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 14:01:51 +0000