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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
AVFS: A Virtual File System Library
Copyright (C) 1998-2001 Miklos Szeredi (mszeredi@inf.bme.hu)
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
*/
#include "fuse.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <mntent.h>
static void loop(int devfd)
{
int res;
struct fuse_param param;
while(1) {
res = read(devfd, ¶m, sizeof(param));
if(res == -1) {
perror("read");
exit(1);
}
printf("unique: %i, opcode: %i\n", param.unique, param.u.i.opcode);
param.u.o.result = 0;
res = write(devfd, ¶m, sizeof(param));
if(res == -1) {
perror("write");
exit(1);
}
}
}
static int mount_fuse(const char *dev, const char *dir, int devfd)
{
int res;
const char *type;
FILE *fd;
struct mntent ent;
struct fuse_mount_data data;
data.version = FUSE_MOUNT_VERSION;
data.fd = devfd;
type = "fuse";
res = mount(dev, dir, type, MS_MGC_VAL | MS_NOSUID | MS_NODEV, &data);
if(res == -1) {
fprintf(stderr, "mount failed: %s\n", strerror(errno));
return -1;
}
fd = setmntent("/etc/mtab", "a");
if(fd == NULL) {
fprintf(stderr, "setmntent(\"/etc/mtab\") failed: %s\n",
strerror(errno));
return -1;
}
ent.mnt_fsname = (char *) dev;
ent.mnt_dir = (char *) dir;
ent.mnt_type = (char *) type;
ent.mnt_opts = "rw,nosuid,nodev";
ent.mnt_freq = 0;
ent.mnt_passno = 0;
res = addmntent(fd, & ent);
if(res != 0)
fprintf(stderr, "addmntent() failed: %s\n", strerror(errno));
endmntent(fd);
return 0;
}
int main(int argc, char *argv[])
{
const char *dev;
const char *dir;
int devfd;
if(argc < 3) {
fprintf(stderr, "usage: %s dev dir\n", argv[0]);
exit(1);
}
dev = argv[1];
dir = argv[2];
devfd = open(dev, O_RDWR);
if(devfd == -1) {
fprintf(stderr, "failed to open %s: %s\n", dev, strerror(errno));
exit(1);
}
mount_fuse(dev, dir, devfd);
loop(devfd);
return 0;
}
|
