partinfo.c revision 134ea28aaf76a3497361c99e115ff666b0c000b8 
1/*
2 * partinfo.c
3 *
4 * Originally written by Alain Knaff, <alknaff@innet.lu>.
5 *
6 * Cleaned up by Theodore Ts'o, <tytso@mit.edu>.
7 *
8 */
9
10#include <sys/types.h>
11#include <fcntl.h>
12#include <stdio.h>
13#include <linux/fs.h>
14#include <linux/hdreg.h>
15#include <unistd.h>
16#include <stdlib.h>
17
18void print_error(char *operation, int error, char *device)
19{
20	fprintf(stderr, "%s failed for %s: %s\n", operation, device,
21		strerror(error));
22}
23
24int main(int argc, char **argv)
25{
26	struct hd_geometry loc;
27	int fd, size, i;
28
29	if (argc == 1) {
30		fprintf(stderr, "Usage: %s <dev1> <dev2> <dev3>\n\n"
31			"This program prints out the partition information "
32			"for a set of devices\n"
33			"A common way to use this progrma is:\n\n\t"
34			"%s /dev/hda?\n\n", argv[0], argv[0]);
35		exit(1);
36	}
37
38	for (i=1; i < argc; i++) {
39		fd = open(argv[i], O_RDONLY);
40
41		if (fd < 0) {
42			print_error("open", errno, argv[1]);
43			continue;
44		}
45
46		if (ioctl(fd, HDIO_GETGEO, &loc) < 0) {
47			print_error("HDIO_GETGEO ioctl", errno, argv[1]);
48			close(fd);
49			continue;
50		}
51
52
53		if (ioctl(fd, BLKGETSIZE, &size) < 0) {
54			print_error("BLKGETSIZE ioctl", errno, argv[1]);
55			close(fd);
56			continue;
57		}
58
59		printf("%s: h=%3d s=%3d c=%4d   start=%8d size=%8d end=%8d\n",
60		       argv[i],
61		       loc.heads, (int)loc.sectors, loc.cylinders,
62		       (int)loc.start, size, (int) loc.start + size -1);
63		close(fd);
64	}
65	exit(0);
66}
67