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
|
/*
* FUSE: Filesystem in Userspace
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE
*/
/*
* Creates files on the underlying file system in response to a FUSE_MKNOD
* operation
*/
static int mknod_wrapper(int dirfd, const char *path, const char *link,
int mode, dev_t rdev)
{
int res;
if (S_ISREG(mode)) {
res = openat(dirfd, path, O_CREAT | O_EXCL | O_WRONLY, mode);
if (res >= 0)
res = close(res);
} else if (S_ISDIR(mode)) {
res = mkdirat(dirfd, path, mode);
} else if (S_ISLNK(mode) && link != NULL) {
res = symlinkat(link, dirfd, path);
} else if (S_ISFIFO(mode)) {
res = mkfifoat(dirfd, path, mode);
#ifdef __FreeBSD__
} else if (S_ISSOCK(mode)) {
struct sockaddr_un su;
int fd;
if (strlen(path) >= sizeof(su.sun_path)) {
errno = ENAMETOOLONG;
return -1;
}
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd >= 0) {
/*
* We must bind the socket to the underlying file
* system to create the socket file, even though
* we'll never listen on this socket.
*/
su.sun_family = AF_UNIX;
strncpy(su.sun_path, path, sizeof(su.sun_path));
res = bindat(dirfd, fd, (struct sockaddr*)&su,
sizeof(su));
if (res == 0)
close(fd);
} else {
res = -1;
}
#endif
} else {
res = mknodat(dirfd, path, mode, rdev);
}
return res;
}
|
