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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.h"
/* A utility program for the Linux OS SCSI subsystem.
*
*
* This program issues the SCSI command SYNCHRONIZE CACHE to the given SCSI
* device. This command is defined for SCSI "direct access" devices
* (e.g. disks)
*/
static char * version_str = "1.05 20060623";
#define ME "sg_sync: "
static struct option long_options[] = {
{"count", 1, 0, 'c'},
{"group", 1, 0, 'g'},
{"help", 0, 0, 'h'},
{"immed", 0, 0, 'i'},
{"lba", 1, 0, 'l'},
{"sync-nv", 0, 0, 's'},
{"verbose", 0, 0, 'v'},
{"version", 0, 0, 'V'},
{0, 0, 0, 0},
};
static void usage()
{
fprintf(stderr, "Usage: "
"sg_sync [--count=<n>] [--group=<n>] [--help] [--immed]"
" [--lba=<n>]\n"
" [--sync-nv] [--verbose] [--version]"
" <scsi_device>\n"
" where: --count=<n>|-c <n> number of blocks to sync (def: 0 "
"which implies\n"
" rest of device)\n"
" --group=<n>|-g <n> set group number (def: 0)\n"
" --help|-h print out usage message\n"
" --immed|-i command returns immediately when set "
"else wait\n"
" for 'sync' to complete\n"
" --lba=<n>|-l <n> logical block address to start sync "
"operation\n"
" from (def: 0)\n"
" --sync-nv|-s synchronize to non-volatile storage "
"(if distinct\n"
" from medium)\n"
" --verbose|-v increase verbosity\n"
" --version|-V print version string and exit\n\n"
"Performs a SYNCHRONIZE CACHE SCSI command\n"
);
}
int main(int argc, char * argv[])
{
int sg_fd, res, c;
long long count = 0;
int group = 0;
long long lba = 0;
int immed = 0;
int sync_nv = 0;
int verbose = 0;
char device_name[256];
int ret = 0;
memset(device_name, 0, sizeof device_name);
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "c:g:hil:svV", long_options,
&option_index);
if (c == -1)
break;
switch (c) {
case 'c':
count = sg_get_llnum(optarg);
if (count < 0) {
fprintf(stderr, "bad argument to '--count'\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'g':
group = sg_get_num(optarg);
if ((group < 0) || (group > 31)) {
fprintf(stderr, "bad argument to '--group'\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 'h':
case '?':
usage();
return 0;
case 'i':
immed = 1;
break;
case 'l':
lba = sg_get_llnum(optarg);
if (lba < 0) {
fprintf(stderr, "bad argument to '--lba'\n");
return SG_LIB_SYNTAX_ERROR;
}
break;
case 's':
sync_nv = 1;
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;
}
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;
}
res = sg_ll_sync_cache_10(sg_fd, sync_nv, immed, group,
(unsigned int)lba, (unsigned int)count,
1, verbose);
ret = res;
if (0 == res)
;
else if (SG_LIB_CAT_NOT_READY == res)
fprintf(stderr, "Synchronize cache failed, device not ready\n");
else if (SG_LIB_CAT_UNIT_ATTENTION == res)
fprintf(stderr, "Synchronize cache, unit attention\n");
else if (SG_LIB_CAT_INVALID_OP == res)
fprintf(stderr, "Synchronize cache command not supported\n");
else if (SG_LIB_CAT_ILLEGAL_REQ == res)
fprintf(stderr, "bad field in Synchronize cache command\n");
else
fprintf(stderr, "Synchronize cache failed\n");
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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