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|
/*
* ata_id - reads product/serial number from ATA drives
*
* Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/types.h>
#include <linux/hdreg.h>
#include "../../udev/udev.h"
static void log_fn(struct udev *udev, int priority,
const char *file, int line, const char *fn,
const char *format, va_list args)
{
vsyslog(priority, format, args);
}
static void set_str(char *to, const char *from, size_t count)
{
size_t i, j, len;
/* strip trailing whitespace */
len = strnlen(from, count);
while (len && isspace(from[len-1]))
len--;
/* strip leading whitespace */
i = 0;
while (isspace(from[i]) && (i < len))
i++;
j = 0;
while (i < len) {
/* substitute multiple whitespace */
if (isspace(from[i])) {
while (isspace(from[i]))
i++;
to[j++] = '_';
}
/* skip chars */
if (from[i] == '/') {
i++;
continue;
}
to[j++] = from[i++];
}
to[j] = '\0';
}
int main(int argc, char *argv[])
{
struct udev *udev;
struct hd_driveid id;
char model[41];
char serial[21];
char revision[9];
const char *node = NULL;
int export = 0;
int fd;
int rc = 0;
static const struct option options[] = {
{ "export", 0, NULL, 'x' },
{ "help", 0, NULL, 'h' },
{}
};
udev = udev_new();
if (udev == NULL)
goto exit;
logging_init("ata_id");
udev_set_log_fn(udev, log_fn);
while (1) {
int option;
option = getopt_long(argc, argv, "xh", options, NULL);
if (option == -1)
break;
switch (option) {
case 'x':
export = 1;
break;
case 'h':
printf("Usage: ata_id [--export] [--help] <device>\n"
" --export print values as environemt keys\n"
" --help print this help text\n\n");
default:
rc = 1;
goto exit;
}
}
node = argv[optind];
if (node == NULL) {
err(udev, "no node specified\n");
rc = 1;
goto exit;
}
fd = open(node, O_RDONLY|O_NONBLOCK);
if (fd < 0) {
err(udev, "unable to open '%s'\n", node);
rc = 1;
goto exit;
}
if (ioctl(fd, HDIO_GET_IDENTITY, &id)) {
if (errno == ENOTTY) {
info(udev, "HDIO_GET_IDENTITY unsupported for '%s'\n", node);
rc = 2;
} else {
err(udev, "HDIO_GET_IDENTITY failed for '%s'\n", node);
rc = 3;
}
goto close;
}
set_str(model, (char *) id.model, 40);
set_str(serial, (char *) id.serial_no, 20);
set_str(revision, (char *) id.fw_rev, 8);
if (export) {
if ((id.config >> 8) & 0x80) {
/* This is an ATAPI device */
switch ((id.config >> 8) & 0x1f) {
case 0:
printf("ID_TYPE=cd\n");
break;
case 1:
printf("ID_TYPE=tape\n");
break;
case 5:
printf("ID_TYPE=cd\n");
break;
case 7:
printf("ID_TYPE=optical\n");
break;
default:
printf("ID_TYPE=generic\n");
break;
}
} else {
printf("ID_TYPE=disk\n");
}
printf("ID_MODEL=%s\n", model);
printf("ID_SERIAL=%s\n", serial);
printf("ID_REVISION=%s\n", revision);
printf("ID_BUS=ata\n");
} else {
if (serial[0] != '\0')
printf("%s_%s\n", model, serial);
else
printf("%s\n", model);
}
close:
close(fd);
exit:
udev_unref(udev);
logging_close();
return rc;
}
|
