1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include "../include/types.h"
#include "../version.h"
void print_help(char* argv_0)
{
printf("Usage: %s -H <host> -p <port> -d <device>\n", argv_0);
printf("Start the DNBD3 client.\n");
printf("-H or --host \t\t Host running dnbd3-server.\n");
printf("-p or --port \t\t Port used by server.\n");
printf("-d or --device \t\t DNBD3 device name.\n");
printf("-h or --help \t\t Show this help text and quit.\n");
printf("-v or --version \t Show version and quit.\n");
exit(EXIT_SUCCESS);
}
void print_version()
{
printf("Version: %s\n", VERSION_STRING);
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
char *host = NULL;
char *port = NULL;
char *dev = NULL;
int opt = 0;
int longIndex = 0;
static const char *optString = "H:p:d:hv?";
static const struct option longOpts[] =
{
{ "host", required_argument, NULL, 'H' },
{ "port", required_argument, NULL, 'p' },
{ "device", required_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' }, };
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
while (opt != -1)
{
switch (opt)
{
case 'H':
host = optarg;
break;
case 'p':
port = optarg;
break;
case 'd':
dev = optarg;
break;
case 'h':
print_help(argv[0]);
break;
case 'v':
print_version();
break;
case '?':
print_help(argv[0]);
}
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
}
if (!host || !port || !dev)
{
printf("FATAL: Not enough information specified\n");
exit(EXIT_FAILURE);
}
int fd;
fd = open(dev, O_RDONLY);
if (ioctl(fd, IOCTL_SET_HOST, host) < 0)
printf("ERROR: ioctl not successful\n");
if (ioctl(fd, IOCTL_SET_PORT, port) < 0)
printf("ERROR: ioctl not successful\n");
if (ioctl(fd, IOCTL_CONNECT) < 0)
printf("ERROR: ioctl not successful\n");
close(fd);
exit(EXIT_SUCCESS);
}
|
