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|
/*
* Copyright (c) 2005-2006 Douglas Gilbert.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <getopt.h>
#include <limits.h>
#include "sg_lib.h"
#include "sg_cmds.h"
/* A utility program for the Linux OS SCSI subsystem.
*
* This utility invokes the REASSIGN BLOCKS SCSI command to reassign
* an existing (possibly damaged) lba on a direct access device (e.g.
* a disk) to a new physical location. The previous contents is
* recoverable then it is written to the remapped lba otherwise
* vendor specific data is written.
*/
static char * version_str = "1.06 20060623";
#define ME "sg_reassign: "
#define DEF_DEFECT_LIST_FORMAT 4 /* bytes from index */
#define MAX_NUM_ADDR 1024
static struct option long_options[] = {
{"address", 1, 0, 'a'},
{"dummy", 0, 0, 'd'},
{"eight", 1, 0, 'e'},
{"grown", 0, 0, 'g'},
{"help", 0, 0, 'h'},
{"longlist", 1, 0, 'l'},
{"verbose", 0, 0, 'v'},
{"version", 0, 0, 'V'},
{0, 0, 0, 0},
};
static void usage()
{
fprintf(stderr, "Usage: "
"sg_reassign --address=<n>[,<n>...] [--dummy] [--eight=0|1] "
"[--grown]\n"
" [--help] [--longlist=0|1] [--verbose] "
"[--version]\n"
" <scsi_device>\n"
" where:\n"
" --address=<n>[,<n>...]\n"
" -a <n>[,<n>...] comma separated logical block "
"addresses\n"
" (at least one required)\n"
" --address=- | -a - read stdin for logical block "
"addresses\n"
" --dummy | -d prepare but do not execute "
"REASSIGN BLOCKS\n"
" command\n"
" --eight=0|1\n"
" -e 0|1 force eight byte (64 bit) lbas "
"when 1,\n"
" four byte (32 bit) lbas when 0 "
"(def)\n"
" --grown | -g fetch grown defect list length, "
"don't reassign\n"
" --help | -h print out usage message\n"
" --longlist=0|1\n"
" -l 0|1 use 4 byte list length when "
"'--longlist=1',\n"
" safe to ignore and use 2 byte "
"list length\n"
" --verbose | -v increase verbosity\n"
" --version | -V print version string and exit\n\n"
"Perform a REASSIGN BLOCKS SCSI command\n"
);
}
/* Trying to decode multipliers as sg_get_llnum() [in sg_libs does] would
* only confuse things here, so use this local trimmed version */
long long get_llnum(const char * buf)
{
int res, len;
long long num;
unsigned long long unum;
const char * commap;
if ((NULL == buf) || ('\0' == buf[0]))
return -1LL;
len = strlen(buf);
commap = strchr(buf + 1, ',');
if (('0' == buf[0]) && (('x' == buf[1]) || ('X' == buf[1]))) {
res = sscanf(buf + 2, "%llx", &unum);
num = unum;
} else if (commap && ('H' == toupper(*(commap - 1)))) {
res = sscanf(buf, "%llx", &unum);
num = unum;
} else if ((NULL == commap) && ('H' == toupper(buf[len - 1]))) {
res = sscanf(buf, "%llx", &unum);
num = unum;
} else
res = sscanf(buf, "%lld", &num);
if (1 == res)
return num;
else
return -1LL;
}
/* Read numbers (up to 64 bits in size) from command line (comma separated */
/* list) or from stdin (one per line, comma separated list or */
/* space separated list). Assumed decimal unless prefixed by '0x', '0X' */
/* or contains trailing 'h' or 'H' (which indicate hex). */
/* Returns 0 if ok, or 1 if error. */
static int build_lba_arr(const char * inp, unsigned long long * lba_arr,
int * lba_arr_len, int max_arr_len)
{
int in_len, k, j, m;
const char * lcp;
long long ll;
char * cp;
if ((NULL == inp) || (NULL == lba_arr) ||
(NULL == lba_arr_len))
return 1;
lcp = inp;
in_len = strlen(inp);
if (0 == in_len)
*lba_arr_len = 0;
if ('-' == inp[0]) { /* read from stdin */
char line[512];
int off = 0;
for (j = 0; j < 512; ++j) {
if (NULL == fgets(line, sizeof(line), stdin))
break;
in_len = strlen(line);
if (in_len > 0) {
if ('\n' == line[in_len - 1]) {
--in_len;
line[in_len] = '\0';
}
}
if (0 == in_len)
continue;
lcp = line;
m = strspn(lcp, " \t");
if (m == in_len)
continue;
lcp += m;
in_len -= m;
if ('#' == *lcp)
continue;
k = strspn(lcp, "0123456789aAbBcCdDeEfFhHxX ,\t");
if ((k < in_len) && ('#' != lcp[k])) {
fprintf(stderr, "build_lba_arr: syntax error at "
"line %d, pos %d\n", j + 1, m + k + 1);
return 1;
}
for (k = 0; k < 1024; ++k) {
ll = get_llnum(lcp);
if (-1 != ll) {
if ((off + k) >= max_arr_len) {
fprintf(stderr, "build_lba_arr: array length "
"exceeded\n");
return 1;
}
lba_arr[off + k] = (unsigned long long)ll;
lcp = strpbrk(lcp, " ,\t");
if (NULL == lcp)
break;
lcp += strspn(lcp, " ,\t");
if ('\0' == *lcp)
break;
} else {
if ('#' == *lcp) {
--k;
break;
}
fprintf(stderr, "build_lba_arr: error in "
"line %d, at pos %d\n", j + 1,
(int)(lcp - line + 1));
return 1;
}
}
off += (k + 1);
}
*lba_arr_len = off;
} else { /* hex string on command line */
k = strspn(inp, "0123456789aAbBcCdDeEfFhHxX,");
if (in_len != k) {
fprintf(stderr, "build_lba_arr: error at pos %d\n", k + 1);
return 1;
}
for (k = 0; k < max_arr_len; ++k) {
ll = get_llnum(lcp);
if (-1 != ll) {
lba_arr[k] = (unsigned long long)ll;
cp = strchr(lcp, ',');
if (NULL == cp)
break;
lcp = cp + 1;
} else {
fprintf(stderr, "build_lba_arr: error at pos %d\n",
(int)(lcp - inp + 1));
return 1;
}
}
*lba_arr_len = k + 1;
if (k == max_arr_len) {
fprintf(stderr, "build_lba_arr: array length exceeded\n");
return 1;
}
}
return 0;
}
int main(int argc, char * argv[])
{
int sg_fd, res, c, num, k, j;
int dummy = 0;
int got_addr = 0;
int eight = -1;
int addr_arr_len = 0;
int grown = 0;
int longlist = 0;
int verbose = 0;
char device_name[256];
unsigned long long addr_arr[MAX_NUM_ADDR];
unsigned char param_arr[4 + (MAX_NUM_ADDR * 8)];
int param_len = 4;
int ret = 0;
memset(device_name, 0, sizeof device_name);
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "a:de:ghl:vV", long_options,
&option_index);
if (c == -1)
break;
switch (c) {
case 'a':
memset(addr_arr, 0, sizeof(addr_arr));
if (0 != build_lba_arr(optarg, addr_arr, &addr_arr_len,
MAX_NUM_ADDR)) {
fprintf(stderr, "bad argument to '--address'\n");
return SG_LIB_SYNTAX_ERROR;
}
got_addr = 1;
break;
case 'd':
dummy = 1;
break;
case 'e':
num = sscanf(optarg, "%d", &res);
if ((1 == num) && ((0 == res) || (1 == res)))
eight = res;
else {
fprintf(stderr, "value for '--eight=' must be 0 or 1\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'g':
grown = 1;
break;
case 'h':
case '?':
usage();
return 0;
case 'l':
num = sscanf(optarg, "%d", &res);
if ((1 == num) && ((0 == res) || (1 == res)))
longlist = res;
else {
fprintf(stderr, "value for '--longlist=' must be 0 or 1\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'v':
++verbose;
break;
case 'V':
fprintf(stderr, ME "version: %s\n", version_str);
return 0;
default:
fprintf(stderr, "unrecognised switch code 0x%x ??\n", c);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (optind < argc) {
if ('\0' == device_name[0]) {
strncpy(device_name, argv[optind], sizeof(device_name) - 1);
device_name[sizeof(device_name) - 1] = '\0';
++optind;
}
if (optind < argc) {
for (; optind < argc; ++optind)
fprintf(stderr, "Unexpected extra argument: %s\n",
argv[optind]);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (0 == device_name[0]) {
fprintf(stderr, "missing device name!\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
if (grown) {
if (got_addr) {
fprintf(stderr, "can't have both '--grown' and '--address='\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
} else if ((0 == got_addr) || (addr_arr_len < 1)) {
fprintf(stderr, "need at least one address (see '--address=')\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
if (got_addr) {
for (k = 0; k < addr_arr_len; ++k) {
if (addr_arr[k] >= ULONG_MAX) {
if (eight < 0) {
eight = 1;
break;
} else if (0 == eight) {
fprintf(stderr, "address number %d exceeds 32 bits so "
"'--eight=0' invalid\n", k + 1);
return SG_LIB_SYNTAX_ERROR;
}
}
}
if (eight < 0)
eight = 0;
k = 4;
for (j = 0; j < addr_arr_len; ++j) {
if (eight) {
param_arr[k++] = (addr_arr[j] >> 56) & 0xff;
param_arr[k++] = (addr_arr[j] >> 48) & 0xff;
param_arr[k++] = (addr_arr[j] >> 40) & 0xff;
param_arr[k++] = (addr_arr[j] >> 32) & 0xff;
}
param_arr[k++] = (addr_arr[j] >> 24) & 0xff;
param_arr[k++] = (addr_arr[j] >> 16) & 0xff;
param_arr[k++] = (addr_arr[j] >> 8) & 0xff;
param_arr[k++] = addr_arr[j] & 0xff;
}
param_len = k;
k -= 4;
if (longlist) {
param_arr[0] = (k >> 24) & 0xff;
param_arr[1] = (k >> 16) & 0xff;
}
param_arr[2] = (k >> 8) & 0xff;
param_arr[3] = k & 0xff;
}
sg_fd = sg_cmds_open_device(device_name, 0 /* rw */, verbose);
if (sg_fd < 0) {
fprintf(stderr, ME "open error: %s: %s\n", device_name,
safe_strerror(-sg_fd));
return SG_LIB_FILE_ERROR;
}
if (got_addr) {
if (dummy) {
fprintf(stderr, ">>> dummy: REASSIGN BLOCKS not executed\n");
if (verbose) {
fprintf(stderr, " Would have reassigned these blocks:\n");
for (j = 0; j < addr_arr_len; ++j)
printf(" 0x%llx\n", addr_arr[j]);
}
return 0;
}
res = sg_ll_reassign_blocks(sg_fd, eight, longlist, param_arr,
param_len, 1, verbose);
ret = res;
if (SG_LIB_CAT_NOT_READY == res) {
fprintf(stderr, "REASSIGN BLOCKS failed, device not ready\n");
goto err_out;
} else if (SG_LIB_CAT_UNIT_ATTENTION == res) {
fprintf(stderr, "REASSIGN BLOCKS, unit attention\n");
goto err_out;
} else if (SG_LIB_CAT_INVALID_OP == res) {
fprintf(stderr, "REASSIGN BLOCKS not supported\n");
goto err_out;
} else if (SG_LIB_CAT_ILLEGAL_REQ == res) {
fprintf(stderr, "bad field in REASSIGN BLOCKS cdb\n");
goto err_out;
} else if (0 != res) {
fprintf(stderr, "REASSIGN BLOCKS failed\n");
goto err_out;
}
} else /* if (grown) */ {
int dl_format = DEF_DEFECT_LIST_FORMAT;
int div = 0;
int dl_len;
param_len = 4;
memset(param_arr, 0, param_len);
res = sg_ll_read_defect10(sg_fd, 0 /* req_plist */,
1 /* req_glist */, dl_format,
param_arr, param_len, 0, verbose);
ret = res;
if (SG_LIB_CAT_NOT_READY == res) {
fprintf(stderr, "READ DEFECT DATA (10) failed, device not "
"ready\n");
goto err_out;
} else if (SG_LIB_CAT_INVALID_OP == res) {
fprintf(stderr, "READ DEFECT DATA (10) not supported\n");
goto err_out;
} else if (SG_LIB_CAT_ILLEGAL_REQ == res) {
fprintf(stderr, "bad field in READ DEFECT DATA (10) cdb\n");
goto err_out;
} else if (0 != res) {
fprintf(stderr, "READ DEFECT DATA (10) failed\n");
goto err_out;
}
if (0x8 != (param_arr[1] & 0x18)) {
fprintf(stderr, "asked for grown defect list but didn't get it\n");
goto err_out;
}
if (verbose)
fprintf(stderr, "asked for defect list format %d, got %d\n",
dl_format, (param_arr[1] & 0x7));
dl_format = (param_arr[1] & 0x7);
switch (dl_format) {
case 0: /* short block */
div = 4;
break;
case 3: /* long block */
case 4: /* bytes from index */
case 5: /* physical sector */
div = 8;
break;
default:
fprintf(stderr, "defect list format %d unknown\n", dl_format);
break;
}
dl_len = (param_arr[2] << 8) + param_arr[3];
if (0 == dl_len)
printf(">> Elements in grown defect list: 0\n");
else {
if (0 == div)
printf(">> Grown defect list length=%d bytes [unknown "
"number of elements]\n", dl_len);
else
printf(">> Elements in grown defect list: %d\n",
dl_len / div);
}
}
err_out:
res = sg_cmds_close_device(sg_fd);
if (res < 0) {
fprintf(stderr, "close error: %s\n", safe_strerror(-res));
if (0 == ret)
return SG_LIB_FILE_ERROR;
}
return (ret >= 0) ? ret : SG_LIB_CAT_OTHER;
}
|