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/*
* Copyright (c) 2004-2010 Douglas Gilbert.
* All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the BSD_LICENSE file.
*/
#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"
/* A utility program for the Linux OS SCSI subsystem.
*
*
* This program issues the SCSI command SYNCHRONIZE CACHE(10) to the given
* device. This command is defined for SCSI "direct access" devices
* (e.g. disks).
*/
static char * version_str = "1.08 20100312";
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=COUNT] [--group=GROUP] [--help] [--immed]\n"
" [--lba=LBA] [--sync-nv] [--verbose] [--version] "
"DEVICE\n"
" where:\n"
" --count=COUNT|-c COUNT number of blocks to sync (def: 0 "
"which implies\n"
" rest of device)\n"
" --group=GROUP|-g GROUP 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=LBA|-l LBA 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 SCSI SYNCHRONIZE CACHE(10) command\n"
);
}
int main(int argc, char * argv[])
{
int sg_fd, res, c;
int64_t count = 0;
int group = 0;
int64_t lba = 0;
int immed = 0;
int sync_nv = 0;
int verbose = 0;
const char * device_name = NULL;
int ret = 0;
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, "version: %s\n", version_str);
return 0;
default:
fprintf(stderr, "unrecognised option code 0x%x ??\n", c);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (optind < argc) {
if (NULL == device_name) {
device_name = argv[optind];
++optind;
}
if (optind < argc) {
for (; optind < argc; ++optind)
fprintf(stderr, "Unexpected extra argument: %s\n",
argv[optind]);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (NULL == device_name) {
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, "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_ABORTED_COMMAND == res)
fprintf(stderr, "Synchronize cache, aborted command\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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