1/*
2  FUSE fioclient: FUSE ioctl example client
3  Copyright (C) 2008       SUSE Linux Products GmbH
4  Copyright (C) 2008       Tejun Heo <teheo@suse.de>
5
6  This program tests the ioctl.c example file systsem.
7
8  This program can be distributed under the terms of the GNU GPLv2.
9  See the file COPYING.
10*/
11
12/** @file
13 *
14 * This program tests the ioctl.c example file systsem.
15 *
16 * Compile with:
17 *
18 *     gcc -Wall ioctl_client.c -o ioctl_client
19 *
20 * ## Source code ##
21 * \include ioctl_client.c
22 */
23
24#include <sys/types.h>
25#include <fcntl.h>
26#include <sys/stat.h>
27#include <sys/ioctl.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <ctype.h>
31#include <errno.h>
32#include <unistd.h>
33#include "ioctl.h"
34
35const char *usage =
36"Usage: fioclient FIOC_FILE [size]\n"
37"\n"
38"Get size if <size> is omitted, set size otherwise\n"
39"\n";
40
41int main(int argc, char **argv)
42{
43	size_t size;
44	int fd;
45	int ret = 0;
46
47	if (argc < 2) {
48		fprintf(stderr, "%s", usage);
49		return 1;
50	}
51
52	fd = open(argv[1], O_RDWR);
53	if (fd < 0) {
54		perror("open");
55		return 1;
56	}
57
58	if (argc == 2) {
59		if (ioctl(fd, FIOC_GET_SIZE, &size)) {
60			perror("ioctl");
61			ret = 1;
62			goto out;
63		}
64		printf("%zu\n", size);
65	} else {
66		size = strtoul(argv[2], NULL, 0);
67		if (ioctl(fd, FIOC_SET_SIZE, &size)) {
68			perror("ioctl");
69			ret = 1;
70			goto out;
71		}
72	}
73out:
74	close(fd);
75	return ret;
76}
77