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/*
* Copyright (c) 2004-2006 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 <getopt.h>
#include "sg_lib.h"
#include "sg_cmds_basic.h"
#include "sg_cmds_extra.h"
/* A utility program for the Linux OS SCSI subsystem.
*
* This program issues the SCSI VERIFY command to the given SCSI block device.
*/
static char * version_str = "1.08 20061012";
#define ME "sg_verify: "
static struct option long_options[] = {
{"bpc", 1, 0, 'b'},
{"count", 1, 0, 'c'},
{"dpo", 0, 0, 'd'},
{"help", 0, 0, 'h'},
{"lba", 1, 0, 'l'},
{"verbose", 0, 0, 'v'},
{"version", 0, 0, 'V'},
{0, 0, 0, 0},
};
static void usage()
{
fprintf(stderr, "Usage: "
"sg_verify [--bpc=<n>] [--count=<n>] [--dpo] [--help] [--lba=<n>]\n"
" [--verbose] [--version] <scsi_device>\n"
" where:\n"
" --bpc=<n>|-b <n> max blocks per verify command "
"(def 128)\n"
" --count=<n>|-c <n> count of blocks to verify (def 1)\n"
" --dpo|-d disable page out (cache retention "
"priority)\n"
" --help|-h print out usage message\n"
" --lba=<n>|-l <n> logical block address to start "
"verify (def 0)\n"
" --verbose|-v increase verbosity\n"
" --version|-V print version string and exit\n\n"
"Performs a VERIFY(10) SCSI command\n"
);
}
int main(int argc, char * argv[])
{
int sg_fd, res, c, num;
long long ll;
int dpo = 0;
int bytechk = 0;
long long count = 1;
long long orig_count;
int bpc = 128;
unsigned long long lba = 0;
unsigned long long orig_lba;
int verbose = 0;
char device_name[256];
int ret = 0;
unsigned long info = 0;
memset(device_name, 0, sizeof device_name);
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "b:c:dhl:vV", long_options,
&option_index);
if (c == -1)
break;
switch (c) {
case 'b':
bpc = sg_get_num(optarg);
if (bpc < 1) {
fprintf(stderr, "bad argument to '--bpc'\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'c':
count = sg_get_llnum(optarg);
if (count < 0) {
fprintf(stderr, "bad argument to '--count'\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'd':
dpo = 1;
break;
case 'h':
case '?':
usage();
return 0;
case 'l':
ll = sg_get_llnum(optarg);
if (-1 == ll) {
fprintf(stderr, "bad argument to '--lba'\n");
return SG_LIB_SYNTAX_ERROR;
}
lba = (unsigned long long)ll;
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 (bpc > 0xffff) {
fprintf(stderr, "'bpc' cannot exceed 65535\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
if (lba > 0xffffffffLLU) {
fprintf(stderr, "'lba' cannot exceed 32 bits\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
orig_count = count;
orig_lba = lba;
if (0 == device_name[0]) {
fprintf(stderr, "missing device name!\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
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;
}
for (; count > 0; count -= bpc, lba +=bpc) {
num = (count > bpc) ? bpc : count;
res = sg_ll_verify10(sg_fd, dpo, bytechk, (unsigned long)lba, num,
NULL, 0, &info, 1, verbose);
if (0 != res) {
ret = res;
switch (res) {
case SG_LIB_CAT_NOT_READY:
fprintf(stderr, "Verify(10) failed, device not ready\n");
break;
case SG_LIB_CAT_UNIT_ATTENTION:
fprintf(stderr, "Verify(10), unit attention\n");
break;
case SG_LIB_CAT_ABORTED_COMMAND:
fprintf(stderr, "Verify(10), aborted command\n");
break;
case SG_LIB_CAT_INVALID_OP:
fprintf(stderr, "Verify(10) command not supported\n");
break;
case SG_LIB_CAT_ILLEGAL_REQ:
fprintf(stderr, "bad field in Verify(10) cdb, near "
"lba=0x%llx\n", lba);
break;
case SG_LIB_CAT_MEDIUM_HARD:
fprintf(stderr, "medium or hardware error near "
"lba=0x%llx\n", lba);
break;
case SG_LIB_CAT_MEDIUM_HARD_WITH_INFO:
fprintf(stderr, "medium or hardware error, reported "
"lba=0x%lx\n", info);
break;
default:
fprintf(stderr, "Verify(10) failed near lba=%llu [0x%llx]\n",
lba, lba);
break;
}
break;
}
}
if (verbose && (0 == ret) && (orig_count > 1))
fprintf(stderr, "Verified %lld [0x%llx] blocks from lba %llu "
"[0x%llx]\n without error\n", orig_count,
(unsigned long long)orig_count, orig_lba, orig_lba);
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;
}
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